Patent Description:
The present disclosure relates to a refining device.

A sheet manufacturing apparatus including a crushing section that crushes a waste paper sheet, a defibration section that defibrates crushed pieces obtained by the crushing section, an accumulation section for accumulating defibrated materials obtained by the defibration section on a flat surface, a heating/pressurization section that heats and pressurizes accumulated web, a cutting section that cuts a sheet obtained by the heating/pressurization section into a predetermined shape, and a sheet collection section that collects the obtained sheet is known.

As the defibration section, for example, a turbo type fine crusher as described in <CIT> can be used. The turbo type fine crusher of <CIT> includes a casing having a raw material inlet portion and a crushed product outlet portion; a liner provided on an inner surface of the casing; and a rotor rotating in the casing. When the raw material passes between the rotating rotor and the liner, the raw material is crushed and the crushed material is discharged from the crushed product outlet portion.

However, in the turbo type fine crusher described in <CIT>, the gap between the rotor and the liner is relatively narrow, and depending on the size of the raw material, the raw material does not enter between the rotor and the liner, and there is a concern that the raw material will remain in front of the rotor. When this remaining of raw material occurs, the raw material cannot be satisfactorily pulverized.

A similar defibrating device is disclosed in <CIT>. This refining device further discloses a two stage refining comprising two differently sized gaps between the blades and the liner and a partition wall between the two stages.

According to an aspect of the present disclosure, there is provided a refining device including: a casing having a charging port and a discharge port of a raw material; a rotor having a rotation shaft, a first rotor portion positioned on the charging port side, a second rotor portion positioned on the discharge port side, and a partition wall that separates the first rotor portion and the second rotor portion, and disposed on an inside of the casing; and a liner disposed on an inner surface of the casing along an outer periphery of the rotor, in which the first rotor portion has a plurality of first blades radially installed around the rotation shaft through a gap portion which is open on the charging port side and blocked by the partition wall, the second rotor portion has a plurality of second blades radially installed around the rotation shaft, and in a state where the rotor is rotating, the raw material charged from the charging port is refined when sequentially passing between the gap portion and the adjacent first blades and when sequentially passing between the first blade and the liner and between the second blade and the liner, and is discharged from the discharge port.

Hereinafter, the refining device of the present disclosure will be described in detail based on a preferred embodiment illustrated in the accompanying drawings.

<FIG> is a configuration diagram illustrating an outline of a sheet manufacturing apparatus including a refining device according to a first embodiment of the present disclosure. <FIG> is a longitudinal sectional view of the refining device illustrated in <FIG>. <FIG> is a sectional view taken along the line III-III in <FIG>. <FIG> is a sectional view taken along the line IV-IV in <FIG>.

In the following, the upper side of <FIG> may be referred to as "up" or "upper", and the lower side may be referred to as "down" or "lower". Further, the left side of <FIG> and <FIG> may be referred to as "left" and the right side may be referred to as "right". In addition, <FIG> is a schematic configuration diagram, and the positional relationship, orientation, size, and the like of each section of a sheet manufacturing apparatus <NUM> are not limited to those illustrated. Further, in <FIG>, the direction in which a crushed piece M2, a defibrated material M3, a first sorted material M4-<NUM>, a second sorted material M4-<NUM>, a first web M5, a subdivided product M6, a mixture M7, a second web M8, and a recycled paper sheet S are transported, that is, the direction indicated by the arrow, is also referred to as a transport direction. Further, the tip end side of the arrow in <FIG> is also referred to as "downstream" in the transport direction, and the base end side of the arrow in <FIG> is also referred to as "upstream" in the transport direction.

The sheet manufacturing apparatus <NUM> illustrated in <FIG> is a sheet manufacturing apparatus <NUM> that generates a sheet-like recycled paper sheet S from a raw material M1 which is a waste paper sheet such as a used copy paper sheet.

As illustrated in <FIG>, the sheet manufacturing apparatus <NUM> includes a raw material supply section <NUM>, a crushing section <NUM>, a refining device <NUM> of the present disclosure, a sorting section <NUM>, a first web forming section <NUM>, a subdivision section <NUM>, a mixing section <NUM>, a dispersion section <NUM>, a second web forming section <NUM>, a molding section <NUM>, a cutting section <NUM>, a stock section <NUM>, and a collection section <NUM>.

In addition, the sheet manufacturing apparatus <NUM> includes a humidification section <NUM>, a humidification section <NUM>, a humidification section <NUM>, a humidification section <NUM>, a humidification section <NUM>, and a humidification section <NUM>. In addition, the sheet manufacturing apparatus <NUM> includes a blower <NUM>, a blower <NUM>, and a blower <NUM>.

Further, in the sheet manufacturing apparatus <NUM>, a raw material supply step, a crushing step, a defibrating step, a sorting step, a first web forming step, a dividing step, a mixing step, a loosening step, a second web forming step, a sheet forming step, and a cutting step are executed in this order.

Hereinafter, the configurations of each section will be described.

The raw material supply section <NUM> is a part that performs the raw material supply step of supplying the raw material M1 to the crushing section <NUM>. The raw material M1 is a sheet-like material made of a fiber-containing material containing cellulose fibers. In addition, the cellulose fiber may be a fibrous material containing cellulose as a compound (cellulose in a narrow sense) as a main component, and may contain hemicellulose and lignin in addition to cellulose (cellulose in a narrow sense). In addition, the raw material M1 may have any form such as a woven fabric or a non-woven fabric. Further, the raw material M1 may be, for example, recycled paper recycled and manufactured by defibrating a waste paper sheet, or Yupo synthetic paper (registered trademark), or may not be recycled paper.

The crushing section <NUM> is a part that performs the crushing step of crushing the raw material M1 supplied from the raw material supply section <NUM> in the air such as in the atmosphere. The crushing section <NUM> has a pair of crushing blades <NUM> and a chute <NUM>.

By rotating the pair of crushing blades <NUM> in opposite directions, the raw material M1 can be crushed therebetween, that is, cut into the crushed pieces M2. The shape and size of the crushed piece M2 are preferably suitable for the defibration treatment in the refining device <NUM>. Examples of the shape of the crushed piece M2 include a small piece having a square planar shape and a rectangular shape, particularly a strip-shaped small piece. Further, the size of the crushed piece M2 is preferably, for example, a small piece having an average length of one side of <NUM> or less, and more preferably <NUM> or more and <NUM> or less. The shape of the small piece may be other than a square shape or a rectangular shape. In addition, the thickness is preferably <NUM> or more and <NUM> or less.

The chute <NUM> is disposed below the pair of crushing blades <NUM> and has a funnel shape, for example. As a result, the chute <NUM> can receive the crushed piece M2 that was crushed by the crushing blade <NUM> and fell.

Further, above the chute <NUM>, a humidification section <NUM> is disposed adjacent to the pair of crushing blades <NUM>. The humidification section <NUM> humidifies the crushed piece M2 in the chute <NUM>. The humidification section <NUM> has a filter (not illustrated) containing moisture, and is configured as a vaporization type (or warm air vaporization type) humidifier that supplies humidified air with increased humidity to the crushed piece M2 by allowing air to pass through the filter. By supplying the humidified air to the crushed piece M2, it is possible to suppress adhesion of the crushed piece M2 to the chute <NUM> or the like due to static electricity.

The chute <NUM> is coupled to the upstream of the refining device <NUM> through a pipe <NUM>. That is, the downstream end portion of the pipe <NUM> is coupled to the charging port <NUM> of the refining device <NUM>. The crushed pieces M2 collected on the chute <NUM> pass through the pipe <NUM> and are transported to the refining device <NUM>.

As illustrated in <FIG>, the refining device <NUM> is a part that performs a defibrating step of defibrating the crushed piece M2 in the air, that is, by a dry method. The defibrated material M3 can be generated from the crushed pieces M2 by the defibration treatment in the refining device <NUM>. Here, "defibrating" refers to unraveling the crushed piece M2 formed by binding a plurality of fibers into each fiber. Then, the unraveled material becomes the defibrated material M3. The shape of the defibrated material M3 is a linear shape or a band shape. In addition, the defibrated materials M3 may exist in a state of being intertwined and agglomerated, that is, in a state of forming a so-called "lump".

Further, the refining device <NUM> can generate a flow of air from the crushing section <NUM> to the sorting section <NUM>, that is, an air flow, by rotating the rotor <NUM>, which will be described later. As a result, the crushed piece M2 can be introduced from the pipe <NUM> to the upstream of the refining device <NUM>, and after the defibration treatment, the defibrated material M3 can be delivered to the sorting section <NUM> through the pipe <NUM>.

A pipe <NUM> is coupled to the downstream of the refining device <NUM>. The blower <NUM> configured as, for example, a turbo type fan is installed in the middle of the pipe <NUM>. The blower <NUM> is an air flow generation device that generates an air flow toward the sorting section <NUM>. As a result, the introduction of the crushed piece M2 into the refining device <NUM> and the delivery of the defibrated material M3 to the sorting section <NUM> are promoted. As will be described later, due to the structure of the refining device <NUM>, the passage and defibration treatment of the crushed piece M2, which is a raw material, are facilitated. However, the operation of the blower <NUM> installed on the downstream of the refining device <NUM> promotes the passage of the crushed pieces M2 through the refining device <NUM> and defibration treatment. Further, the blower <NUM> may be installed on the upstream of the refining device <NUM>.

The sorting section <NUM> is a part that performs a sorting step of sorting the defibrated material M3 according to the size of the fiber length. In the sorting section <NUM>, the defibrated material M3 is sorted into a first sorted material M4-<NUM> and a second sorted material M4-<NUM> having a fiber length larger than that of the first sorted material M4-<NUM>. The first sorted material M4-<NUM> has a size suitable for the subsequent manufacturing of the recycled paper sheet S, and the average fiber length thereof is as described above. On the other hand, the second sorted material M4-<NUM> includes, for example, those with insufficient defibration, those in which the defibrated fibers are excessively aggregated, and the like.

The sorting section <NUM> has a drum section <NUM> and a housing section <NUM> that stores the drum section <NUM>.

The drum section <NUM> is formed of a cylindrical net body, and is a sieve that rotates around a central axis thereof. The defibrated material M3 flows into the drum section <NUM>. Then, as the drum section <NUM> rotates, the defibrated material M3 smaller than the mesh opening of the net is sorted as the first sorted material M4-<NUM>, and the defibrated material M3 having a size equal to or larger than the mesh opening of the net is sorted as the second sorted material M4-<NUM>.

The first sorted material M4-<NUM> falls from the drum section <NUM>.

On the other hand, the second sorted material M4-<NUM> is delivered to a pipe <NUM> coupled to the drum section <NUM>. The end portion of the pipe <NUM> on the opposite side to the drum section <NUM>, that is, on the downstream is coupled to the middle of the pipe <NUM>. The second sorted material M4-<NUM> that passed through the pipe <NUM> joins the crushed piece M2 in the pipe <NUM> and flows into the refining device <NUM> together with the crushed piece M2. As a result, the second sorted material M4-<NUM> is returned to the refining device <NUM>, and is defibrated together with the crushed piece M2.

In addition, the first sorted material M4-<NUM> that fell from the drum section <NUM> falls while being dispersed in the air, and is oriented toward the first web forming section <NUM> positioned below the drum section <NUM>. The first web forming section <NUM> is a part that performs the first web forming step of forming the first web M5 from the first sorted material M4-<NUM>. The first web forming section <NUM> includes a mesh belt <NUM>, three tension rollers <NUM>, and a suction section <NUM>.

The mesh belt <NUM> is an endless belt on which the first sorted material M4-<NUM> is accumulated. The mesh belt <NUM> is hung around three tension rollers <NUM>. Then, the first sorted material M4-<NUM> on the mesh belt <NUM> is transported to the downstream by the rotational drive of the tension roller <NUM>.

The first sorted material M4-<NUM> has a size equal to or larger than the mesh opening of the mesh belt <NUM>. As a result, the passage of the first sorted material M4-<NUM> through the mesh belt <NUM> is restricted, and accordingly, the first sorted material M4-<NUM> can be accumulated on the mesh belt <NUM>. In addition, since the first sorted material M4-<NUM> is transported to the downstream together with the mesh belt <NUM> while being accumulated on the mesh belt <NUM>, the first sorted material M4-<NUM> is formed as a layered first web M5.

In addition, for example, there is a concern that dust or dirt will be mixed in the first sorted material M4-<NUM>. Dust or dirt may be generated by, for example, crushing or defibrating. Then, such dust or dirt will be collected by the collection section <NUM> which will be described later.

The suction section <NUM> is a suction mechanism that suctions air from below the mesh belt <NUM>. As a result, dust or dirt that passed through the mesh belt <NUM> can be suctioned together with the air.

Further, the suction section <NUM> is coupled to the collection section <NUM> through a pipe <NUM>. The dust or dirt suctioned by the suction section <NUM> is collected by the collection section <NUM>.

A pipe <NUM> is further coupled to the collection section <NUM>. In addition, the blower <NUM> is installed in the middle of the pipe <NUM>. By operating the blower <NUM>, a suction force can be generated in the suction section <NUM>. Accordingly, the formation of the first web M5 is promoted on the mesh belt <NUM>. Dust or dirt is removed from the first web M5. Further, the dust or dirt pass through the pipe <NUM> and reach the collection section <NUM> by the operation of the blower <NUM>.

The housing section <NUM> is coupled to the humidification section <NUM>. The humidification section <NUM> is configured as a vaporization type humidifier. As a result, humidified air is supplied into the housing section <NUM>. The first sorted material M4-<NUM> can be humidified by the humidified air, and thus it is also possible to suppress adhesion of the first sorted material M4-<NUM> to the inner wall of the housing section <NUM> due to electrostatic force.

The humidification section <NUM> is disposed on the downstream of the sorting section <NUM>. The humidification section <NUM> is configured as an ultrasonic humidifier that sprays water. As a result, moisture can be supplied to the first web M5, and thus the water content of the first web M5 is adjusted. By this adjustment, the adsorption of the first web M5 to the mesh belt <NUM> due to the electrostatic force can be suppressed. As a result, the first web M5 is easily peeled off from the mesh belt <NUM> at the position where the mesh belt <NUM> is folded back by the tension roller <NUM>.

The subdivision section <NUM> is disposed on the downstream of the humidification section <NUM>. The subdivision section <NUM> is a part that performs the dividing step of dividing the first web M5 peeled off from the mesh belt <NUM>. The subdivision section <NUM> has a propeller <NUM> rotatably supported and a housing section <NUM> that stores the propeller <NUM>. Then, the first web M5 can be divided by the rotating propeller <NUM>. The divided first web M5 becomes a subdivided product M6. Further, the subdivided product M6 descends in the housing section <NUM>.

The housing section <NUM> is coupled to the humidification section <NUM>. The humidification section <NUM> is configured as a vaporization type humidifier. As a result, humidified air is supplied into the housing section <NUM>. The humidified air can also suppress adhesion of the subdivided product M6 to the inner wall of the propeller <NUM> or the housing section <NUM> due to electrostatic force.

The mixing section <NUM> is disposed on the downstream of the subdivision section <NUM>. The mixing section <NUM> is a part that performs a mixing step of mixing the subdivided product M6 and the additive. The mixing section <NUM> includes an additive supply section <NUM>, a pipe <NUM>, and a blower <NUM>.

The pipe <NUM> is a flow path which couples the housing section <NUM> of the subdivision section <NUM> and a housing <NUM> of the dispersion section <NUM>, and through which the mixture M7 of the subdivided product M6 and the additive passes.

An additive supply section <NUM> is coupled to the middle of the pipe <NUM>. The additive supply section <NUM> has a housing section <NUM> in which the additive is contained, and a screw feeder <NUM> provided in the housing section <NUM>. By the rotation of the screw feeder <NUM>, the additive in the housing section <NUM> is pushed out from the housing section <NUM> and supplied into the pipe <NUM>. The additive supplied into the pipe <NUM> is mixed with the subdivided product M6 to form the mixture M7.

Here, examples of the additive supplied from the additive supply section <NUM> include a binder for binding fibers to each other, a colorant for coloring the fibers, an aggregation inhibitor for suppressing aggregation of the fibers, a flame retardant for making fibers and the like hard to burn, a paper strength enhancer for enhancing the paper strength of the recycled paper sheet S, and a defibrated material, and one or more of these can be used in combination. Hereinafter, as an example, a case where the additive is a binder P1 will be described. When the additive contains a binding material that binds the fibers to each other, the strength of the recycled paper sheet S can be increased.

Examples of the binder P1 include: natural product-derived ingredients such as starch, dextrin, glycogen, amylose, hyaluronic acid, arrowroot, konjac, potato starch, etherified starch, esterified starch, natural gum glue, fiber-derived glue, seaweed, and animal protein; polyvinyl alcohol; polyacrylic acid; and polyacrylamide, and one or two or more selected from these can be used in combination. However, a natural product-derived ingredient is preferable, and starch is more preferable. Further, for example, thermoplastic resins such as various polyolefins, acrylic resins, polyvinyl chloride, polyester, and polyamide; and various thermoplastic elastomers can also be used.

In addition, as the one supplied from the additive supply section <NUM>, in addition to the binder P1, for example, a colorant for coloring the fibers, an aggregation inhibitor for suppressing aggregation of the fibers or aggregation of the binder P1, a flame retardant for making fibers and the like hard to burn, a paper strength enhancer for enhancing the paper strength of the recycled paper sheet S, and the like may be included. Alternatively, the binder P1 may be impregnated in advance and composited, and the mixture may be supplied from the additive supply section <NUM>.

Further, in the middle of the pipe <NUM>, the blower <NUM> is installed on the downstream of the additive supply section <NUM>. The action of the rotation section such as a blade of the blower <NUM> promotes mixing of the subdivided product M6 and the binder P1. In addition, the blower <NUM> can generate an air flow toward the dispersion section <NUM>. The subdivided product M6 and the binder P1 can be stirred in the pipe <NUM> by this air flow. As a result, the mixture M7 is transported to the dispersion section <NUM> in a state where the subdivided product M6 and the binder P1 are uniformly dispersed. Further, the subdivided product M6 in the mixture M7 is loosened in the process of passing through the pipe <NUM> to become a finer fibrous form.

In addition, the blower <NUM> is electrically coupled to a control device <NUM>, and the operation thereof is controlled. Further, by adjusting the air blowing volume of the blower <NUM>, the amount of air sent into a drum <NUM> can be adjusted.

Although not illustrated, the end portion of the pipe <NUM> on the drum <NUM> side is branched, and the branched end portions are coupled to an introduction port (not illustrated) formed on the end surface of the drum <NUM>, respectively.

The dispersion section <NUM> illustrated in <FIG> is a part of the mixture M7 that performs a releasing step of loosening and releasing fibers that are intertwined with each other. The dispersion section <NUM> includes a drum <NUM> that introduces and releases the mixture M7 that is a defibrated material, and a housing <NUM> that stores the drum <NUM>.

The drum <NUM> is formed of a cylindrical net body, and is a sieve that rotates around a central axis thereof. As the drum <NUM> rotates, fibers or the like smaller than the mesh opening of the net of the mixture M7 can pass through the drum <NUM>. At that time, the mixture M7 is loosened and released together with the air. That is, the drum <NUM> functions as a release section that releases a material containing fibers.

The drum <NUM> is coupled to a driving source (not illustrated), and rotates by a rotational force output from the driving source. The driving source is electrically coupled to the control device <NUM>, and the operation thereof is controlled.

Further, the housing <NUM> is coupled to the humidification section <NUM>. The humidification section <NUM> is configured as a vaporization type humidifier. As a result, humidified air is supplied into the housing <NUM>. The inside of the housing <NUM> can be humidified by the humidified air, and thus it is also possible to suppress adhesion of the mixture M7 to the inner wall of the housing <NUM> due to electrostatic force.

In addition, the mixture M7 released by the drum <NUM> falls while being dispersed in the air, and is oriented toward the second web forming section <NUM> positioned below the drum <NUM>. The second web forming section <NUM> is a part that performs the accumulating step of accumulating the mixture M7 to form the second web M8 which is the accumulated material. The second web forming section <NUM> includes a mesh belt <NUM>, a tension roller <NUM>, and a suction section <NUM>.

The mesh belt <NUM> is a mesh member, and in the illustrated configuration, the mesh belt <NUM> is configured as an endless belt. Further, the mixture M7 dispersed and released by the dispersion section <NUM> is accumulated on the mesh belt <NUM>. The mesh belt <NUM> is hung around four tension rollers <NUM>. Then, the mixture M7 on the mesh belt <NUM> is transported to the downstream by the rotational drive of the tension roller <NUM>.

In the illustrated configuration, the mesh belt <NUM> is used as an example of the mesh member, but the present disclosure is not limited to this, and for example, a flat plate shape may be used.

In addition, most of the mixture M7 on the mesh belt <NUM> has a size equal to or larger than the mesh opening of the mesh belt <NUM>. As a result, the passage of the mixture M7 through the mesh belt <NUM> is restricted, and accordingly, the mixture M7 can be accumulated on the mesh belt <NUM>. In addition, since the mixture M7 is transported to the downstream together with the mesh belt <NUM> while being accumulated on the mesh belt <NUM>, the mixture M7 is formed as a layered second web M8.

The suction section <NUM> is a suction mechanism that suctions air from below the mesh belt <NUM>. Thereby, the mixture M7 can be suctioned onto the mesh belt <NUM>, and thus the accumulation of the mixture M7 on the mesh belt <NUM> is promoted.

A pipe <NUM> is coupled to the suction section <NUM>. In addition, the blower <NUM> is installed in the middle of the pipe <NUM>. By operating the blower <NUM>, a suction force can be generated in the suction section <NUM>.

The humidification section <NUM> is disposed on the downstream of the dispersion section <NUM>. The humidification section <NUM> is configured as an ultrasonic humidifier, which is the same as the humidification section <NUM>. As a result, moisture can be supplied to the second web M8, and thus the water content of the second web M8 is adjusted. By this adjustment, the adsorption of the second web M8 to the mesh belt <NUM> due to the electrostatic force can be suppressed. As a result, the second web M8 is easily peeled off from the mesh belt <NUM> at the position where the mesh belt <NUM> is folded back by the tension roller <NUM>.

The total water content added to the humidification section <NUM> to the humidification section <NUM> is preferably, for example, <NUM> parts by mass or more and <NUM> parts by mass or less with respect to <NUM> parts by mass of the material before humidification.

The molding section <NUM> is disposed on the downstream of the second web forming section <NUM>. The molding section <NUM> is a part that performs a sheet forming step of forming the recycled paper sheet S from the second web M8. The molding section <NUM> has a pressurization section <NUM> and a heating section <NUM>.

The pressurization section <NUM> has a pair of calendar rollers <NUM>, and can pressurize the second web M8 between the calendar rollers <NUM> without heating. Thereby, the density of the second web M8 is increased. The degree of heating in the case of heating is preferably a degree that the binder P1 is not melted, for example. Then, the second web M8 is transported toward the heating section <NUM>. One of the pair of calendar rollers <NUM> is a main roller driven by the operation of a motor (not illustrated), and the other is a driven roller.

The heating section <NUM> has a pair of heating rollers <NUM>, and can pressurize the second web M8 while heating the second web M8 between the heating rollers <NUM>. By this heating and pressurization, the binder P1 is melted in the second web M8, and the fibers are bound to each other through the melted binder P1. As a result, the recycled paper sheet S is formed. Then, the recycled paper sheet S is transported toward the cutting section <NUM>. One of the pair of heating rollers <NUM> is a main roller driven by the operation of a motor (not illustrated), and the other is a driven roller.

The cutting section <NUM> is disposed on the downstream of the molding section <NUM>. The cutting section <NUM> is a part that performs a cutting step of cutting the recycled paper sheet S. The cutting section <NUM> has a first cutter <NUM> and a second cutter <NUM>.

The first cutter <NUM> cuts the recycled paper sheet S in a direction intersecting the transport direction of the recycled paper sheet S, particularly in a direction orthogonal to the transport direction.

The second cutter <NUM> cuts the recycled paper sheet S in a direction parallel to the transport direction of the recycled paper sheet S on the downstream of the first cutter <NUM>. In this cutting, unnecessary parts of both end portions of the recycled paper sheet S in the width direction are removed to adjust the width of the recycled paper sheet S.

By cutting the first cutter <NUM> and the second cutter <NUM> in this manner, the recycled paper sheet S having a desired shape and size can be obtained. Then, the recycled paper sheet S is transported further downstream and accumulated in the stock section <NUM>.

Each section of the sheet manufacturing apparatus <NUM> is electrically coupled to the control device <NUM>. The operation of each of these sections is controlled by the control device <NUM>.

As illustrated in <FIG>, the control device <NUM> includes a control section <NUM>, a storage section <NUM>, and a communication section <NUM>.

The control section <NUM> has at least one processor and executes various programs stored in the storage section <NUM>. As the processor, for example, a central processing unit (CPU) can be used. In addition, the control section <NUM> has various functions such as a function of controlling the drive of each part of the device related to sheet manufacturing, such as a function of controlling the drive of the blower <NUM>, and a drive control of a motor M, which will be described later, in the sheet manufacturing apparatus <NUM>.

By controlling the energization of the blower <NUM> and the motor M by the control section <NUM>, the blower <NUM> and the motor M are driven and rotated at a predetermined timing and a predetermined rotation speed, respectively. It is preferable that the blower <NUM> and the motor M be driven to substantially overlap in time. As a result, smooth passage of the raw material into the refining device <NUM> and good defibration treatment are promoted.

For example, a program related to sheet manufacturing is stored in the storage section <NUM>. Regarding the refining of the raw material by the refining device <NUM>, a program related to the operation sequence including conditions such as the operation timing and the rotation speed of the blower <NUM> and the motor M is stored.

The communication section <NUM> is configured as, for example, an I/O interface and communicates with each section of the sheet manufacturing apparatus <NUM>. Further, the communication section <NUM> has a function of communicating with a computer or a server (not illustrated) through a network, for example.

The control device <NUM> may be built in the sheet manufacturing apparatus <NUM> or may be provided in an external device such as an external computer. Further, for example, the control section <NUM> and the storage section <NUM> may be integrated into one unit or may be configured as one unit, the control section <NUM> is built in the sheet manufacturing apparatus <NUM> and the storage section <NUM> is provided in an external device such as an external computer, or the storage section <NUM> may be built in the sheet manufacturing apparatus <NUM> and the control section <NUM> may be provided in an external device such as an external computer.

Next, the configuration of the refining device <NUM> will be described.

As illustrated in <FIG>, the refining device <NUM> refines the supplied raw material and discharges the refined material. In the present embodiment, the refining device <NUM> is a defibrating device that defibrates the supplied crushed piece M2 and generates the defibrated material M3.

In the refining device <NUM> incorporated in the sheet manufacturing apparatus <NUM> illustrated in <FIG>, the second sorted material M4-<NUM> is also mixed with the crushed piece M2 as a raw material to be introduced, but the amount of the second sorted material M4-<NUM> in the raw material is smaller than that of the crushed piece M2, and thus, hereinafter, the raw material to be introduced will be described below as the crushed piece M2.

The refining device <NUM> includes a casing <NUM>, a liner <NUM> disposed on the inner surface of the casing <NUM>, the rotor <NUM> rotatably installed inside the casing <NUM>, and the motor M for rotationally driving the rotor <NUM>. The crushed piece M2 is defibrated when passing between the liner <NUM> and the outer peripheral portion of the rotating rotor <NUM>, and becomes the defibrated material M3.

The casing <NUM> has the charging port <NUM> for charging the crushed piece M2 into the casing <NUM>, and a discharge port <NUM> for discharging the generated defibrated material M3 to the outside of the casing <NUM>. The casing <NUM> is a cylindrical member having an internal space S0 for storing the liner <NUM> and the rotor <NUM>.

The charging port <NUM> is provided on the side near the left end portion of the casing <NUM>. Further, the charging port <NUM> is provided to protrude outward in the radial direction of the casing <NUM> in a tubular shape. The charging port <NUM> is coupled to a downstream end portion of the pipe <NUM> illustrated in <FIG>, and the crushed piece M2 generated by the crushing section <NUM> is charged into the casing <NUM> from the charging port <NUM> through the pipe <NUM>.

The discharge port <NUM> is provided on the side near the right end portion of the casing <NUM>. Further, the discharge port <NUM> is provided to protrude outward in the radial direction of the casing <NUM> in a tubular shape. The discharge port <NUM> is coupled to an upstream end portion of the pipe <NUM> illustrated in <FIG>, and the generated defibrated material M3 is discharged to the outside of the casing <NUM> and transported to the sorting section <NUM> through the pipe <NUM>.

The charging port <NUM> and the discharge port <NUM> have the same positions in the peripheral direction of the casing <NUM>. However, the present disclosure is not limited to this configuration, and the formation positions thereof may be shifted by a predetermined angle or may be on the opposite side.

Further, the casing <NUM> has a partition plate <NUM> and a partition plate <NUM> provided in the internal space S0. The partition plate <NUM> is provided on the extension of the charging port <NUM>, and is installed such that the thickness direction thereof is along a rotation shaft <NUM>. The partition plate <NUM> is provided on the extension of the discharge port <NUM>, and is installed such that the thickness direction thereof is along the rotation shaft <NUM>. The partition plate <NUM> and the partition plate <NUM> are disposed substantially in parallel with each other. The end portions of the partition plate <NUM> and the partition plate <NUM> on the rotation shaft <NUM> side are separated from the rotation shaft <NUM>.

By providing the partition plate <NUM>, the crushed piece M2 charged from the charging port <NUM> can be guided to the near part of the rotation shaft <NUM>. Therefore, the effect of the present disclosure, which will be described later, can be obtained more reliably. Further, since the partition plate <NUM> is provided, the generated defibrated material M3 can be effectively guided to the discharge port <NUM>. Therefore, the defibrated material M3 can be discharged more smoothly.

The liner <NUM> is a tubular member disposed on the entire periphery of the inner surface of a cylindrical part of the casing <NUM>. The central axis of the liner <NUM> is coaxial with the rotation shaft. As illustrated in <FIG> and <FIG>, the outer peripheral surface of the liner <NUM> is fixed to the inner peripheral surface of the casing <NUM>. As illustrated in <FIG>, the length of the liner <NUM> in the shaft direction thereof is the length to the extent including the first blade <NUM> and the second blade <NUM>, which will be described later. The liner <NUM> is made of a hard material such as metal.

Further, teeth <NUM> are formed on the inner periphery of the liner <NUM>.

The teeth <NUM> are provided along the peripheral direction of the liner <NUM>, and have a plurality of protrusion portions <NUM> protruding inward. Further, the protrusion portion <NUM> extends along the shaft direction of the casing <NUM>. Each protrusion portion <NUM> has the same protrusion height and has a top portion <NUM>.

When the crushed piece M2 passes between the teeth <NUM> and the outer peripheral portion of the rotating rotor <NUM>, the crushed piece M2 collides with the teeth <NUM> and is defibrated to generate the defibrated material M3.

The rotor <NUM> has the rotation shaft <NUM>, a first rotor portion <NUM>, a second rotor portion <NUM> positioned on the right side of the first rotor portion <NUM>, and a partition wall <NUM> positioned between the first rotor portion <NUM> and the second rotor portion <NUM>.

The rotation shaft <NUM> has a long shape and is installed to penetrate the casing <NUM> in a direction extending in the left-right direction. The rotation shaft <NUM> is rotatably supported by the casing <NUM> through a shaft bearing (not illustrated), and a right end portion is coupled to an output shaft of the motor M. The motor M is driven by energizing the motor M, and the rotation shaft <NUM> rotates in a predetermined direction. In addition, a speed reducer (not illustrated) may be installed between the output shaft of the motor M and the rotation shaft <NUM>.

In the middle of the rotation shaft <NUM> in the longitudinal direction, the partition wall <NUM> and the side plate <NUM> are separated from each other and fixed. The partition wall <NUM> and the side plate <NUM> have a disk shape, and each of these is provided with a through-hole (not illustrated) for inserting and fixing the rotation shaft <NUM> at the central portion.

As illustrated in <FIG>, the first rotor portion <NUM> has the plurality of first blades <NUM> radially disposed around the rotation shaft <NUM>, and the side plate <NUM> positioned on the left side of each first blade <NUM>. The number of first blades <NUM> is eight in the present embodiment. Each of the first blades <NUM> has a plate shape, and each main surface is disposed in a direction along the radial direction of the casing <NUM> and the rotor <NUM>. In each first blade <NUM>, a right end surface <NUM> is fixed to a left surface <NUM> of the partition wall <NUM>. In addition, each first blade <NUM> has a left end surface <NUM> fixed to a right surface <NUM> of the side plate <NUM>.

The second rotor portion <NUM> has the plurality of second blades <NUM> radially disposed around the rotation shaft <NUM>, and the side plate <NUM> positioned on the right side of each second blade <NUM>. The number of second blades <NUM> is eight in the present embodiment. Each of the second blades <NUM> has a plate shape, and each main surface is disposed in a direction along the radial direction of the casing <NUM> and the rotor <NUM>. In each second blade <NUM>, a right end surface <NUM> is fixed to a left surface <NUM> of the side plate <NUM>. In addition, the left end surface <NUM> of each second blade <NUM> is fixed to the right surface <NUM> of the partition wall <NUM>. The partition wall <NUM>, the side plate <NUM>, and the side plate <NUM> are disposed at equal intervals along the shaft direction of the rotation shaft <NUM> and substantially in parallel with each other.

As described above, each of the first blades <NUM> is fixed to the rotation shaft <NUM> through the partition wall <NUM>, and each of the second blades <NUM> is fixed to the rotation shaft <NUM> through the partition wall <NUM> and the side plate <NUM>. As a result, when the rotation shaft <NUM> rotates, each first blade <NUM> and each second blade <NUM> rotate around the rotation shaft <NUM> together with the partition wall <NUM>, the side plate <NUM>, and the side plate <NUM>. The crushed piece M2 is defibrated when passing between the liner <NUM> and each rotating first blade <NUM>, and further finely defibrated when passing between the liner <NUM> and each rotating second blade <NUM>.

The partition wall <NUM> is positioned between the first blade <NUM> and the second blade <NUM>, and is fixed to both the first blade <NUM> and the second blade <NUM>. The outer peripheral portion of the partition wall <NUM> is separated from the liner <NUM> by a predetermined distance. The first blade <NUM> and the second blade <NUM> can stably rotate together with the partition wall <NUM> in a state where the positional relationship is fixed with each other.

As described above, the rotor <NUM> has the first rotor portion <NUM> and the second rotor portion <NUM>, and defibration is performed in two stages by these. As a result, the defibration of the crushed piece M2 can be smoothly and efficiently performed, and the degree of defibration can be further increased, as compared with the case where the defibration is performed in one stage.

The rotation speed of the rotor <NUM> at the time of defibration is not particularly limited, but is preferably <NUM>,<NUM> rpm or more and <NUM>,<NUM> rpm or less, and more preferably <NUM>,<NUM> rpm or more and <NUM>,<NUM> rpm or less.

In the present embodiment, each first blade <NUM> has the same shape and size, and each second blade <NUM> has the same shape and size. However, the present disclosure is not limited to this configuration, and at least one of the first blades <NUM> may have a different shape or a different size from the others, and at least one of the second blades <NUM> may have a different shape or a different size from the others.

Further, the first blade <NUM> and the second blade <NUM> are disposed in the same pattern when viewed from the shaft direction of the rotation shaft <NUM>. In the present embodiment, the first blade <NUM> and the second blade <NUM> have the same shape, the same size, the same number of blades, and the same disposition pattern. However, the present disclosure is not limited to this configuration, and for example, the first blades <NUM> and the second blades <NUM> may have different sizes, that is, dimensions, may have different installation number, and may have different disposition pitches in the peripheral direction. For example, a case where the length of the first blade <NUM> in the rotation shaft <NUM> direction is shorter or longer than the length of the second blade <NUM> in the rotation shaft <NUM> direction can be mentioned. In addition, a case where the length of the first blade <NUM> in the rotor radial direction is shorter or longer than the length of the second blade <NUM> in the rotor radial direction can be mentioned. Further, although the number of the first blades <NUM> and the second blades <NUM> installed is the same, when viewed from the shaft direction of the rotation shaft <NUM>, the pitches in the peripheral direction of the first blade <NUM> and the second blades <NUM> may disposed to be shifted by a half pitch.

The first blade <NUM> and the second blade <NUM> are made of a hard material such as metal. The first blade <NUM> and the second blade <NUM> are preferably made of the same material, but the present disclosure is not limited thereto.

The first blade <NUM> and the second blade <NUM> are disposed in the same pattern when viewed from the shaft direction of the rotation shaft <NUM>. That is, each first blade <NUM> and each second blade <NUM> overlaps each other when viewed from the shaft direction of the rotation shaft <NUM>. With such a configuration, the first blade <NUM> and the second blade <NUM> are compatible with each other, and the structure can be further simplified.

However, the present disclosure is not limited to this configuration, and only a part of one of the first blade <NUM> and the second blade <NUM> may overlap each other, or both of the disposition positions may be shifted in the peripheral direction or in the radial direction of the rotor <NUM>.

As illustrated in <FIG> and <FIG>, the first rotor portion <NUM> has a gap portion S1 on the outer peripheral portion of the rotation shaft <NUM>, that is, between the rotation shaft <NUM> and each of the first blades <NUM>. In other words, the first blade <NUM> is radially installed around the rotation shaft <NUM> through the gap portion S1.

The right side of the gap portion S1 is blocked by the partition wall <NUM>, the outer peripheral side of the gap portion S1 is opened to the liner <NUM> side through the space between adjacent first blades <NUM>, and the right side of the gap portion S1 is opened to the internal space S0 on the charging port <NUM> side through an introduction port <NUM>.

An introduction port <NUM> formed of a through-hole is formed at the central portion of the side plate <NUM> near the rotation shaft <NUM>. The crushed piece M2, which was charged from the charging port <NUM> and entered the internal space S0, can be introduced into the gap portion S1 through the introduction port <NUM>.

The introduction port <NUM> near the rotation shaft <NUM> is an opening portion of the gap portion S1 with respect to the internal space S0, and is formed at the central portion of the side plate <NUM> to which the first blade <NUM> is fixed. As illustrated in <FIG>, the introduction port <NUM> has a circular shape centered on the rotation shaft <NUM>. As a result, when the side plate <NUM> rotates with the rotation of the rotor <NUM>, the air flow from the introduction port <NUM> to the gap portion S1 is stably formed, and the flow of the crushed piece M2 can be smoothly formed.

In addition, the shape of the introduction port <NUM> is not limited to a circular shape, and may be, for example, a regular polygonal shape. Further, when the area of the side plate <NUM> when viewed from the shaft direction of the rotation shaft <NUM> is A0 and the opening area of the introduction port <NUM> is A1, the ratio of A1/A0 is not particularly limited, but <NUM> ≤ A1/A0 ≤ <NUM> is preferable, and <NUM> ≤ A1/A0 ≤ <NUM> is more preferable. By setting the ratio of A1/A0 to the above range, the flow of the crushed piece M2 passing through the gap portion S1 can be set to an appropriate flow speed, and a smoother flow can be formed.

The crushed piece M2, which is charged from the charging port <NUM> and entered the internal space S0, follows the route R indicated by the solid line in <FIG>. The details will be described below. When the rotor <NUM> rotates in a predetermined direction, the air inside the gap portion S1 passes between the adjacent first blades <NUM> and flows in the outer peripheral direction, that is, in the direction away from the rotation shaft <NUM> due to the centrifugal force. As a result, a negative pressure is generated in the gap portion S1, but since the right side of the gap portion S1 is blocked by the partition wall <NUM>, air flows into the gap portion S1 from the introduction port <NUM>. Along with this air flow, the crushed pieces M2 are introduced into the gap portion S1 from the introduction port <NUM>. The crushed piece M2 introduced from the introduction port <NUM> transfers to the gap portion S1 formed between each first blade <NUM> and the rotation shaft <NUM>.

The gap portion S1 is opened to the charging port <NUM> side and is blocked by the partition wall <NUM>. The presence of the partition wall <NUM> inhibits the crushed piece M2 in the gap portion S1 from directly transferring to a gap portion S2 between the second blade <NUM> and the rotation shaft <NUM>. Therefore, the crushed piece M2 in the gap portion S1 passes between the adjacent first blades <NUM> outward by the air flow formed by the centrifugal force of the rotating first blade <NUM>. Then, the first stage of defibrating is performed between the liner <NUM> and the outer peripheral portion of the first blade <NUM>. Next, the crushed piece M2 transfers between the liner <NUM> and the outer peripheral portion of the second blade <NUM>, and further, the second stage of defibration is performed to obtain the defibrated material M3. The obtained defibrated material M3 passes between the side plate <NUM> and the partition plate <NUM>, and is discharged from the discharge port <NUM> through the internal space S0 on the right side of the second rotor portion <NUM>.

The internal space S0 on the right side of the second rotor portion <NUM> and the inside of the discharge port <NUM> are set to a negative pressure by the operation of the blower <NUM> described above, and the defibrated material M3 is smoothly discharged from the discharge port <NUM>.

Here, in the related art, the crushed piece M2 follows a route R' indicated by the broken line in <FIG>. That is, in the related art, there is no opening corresponding to the introduction port <NUM>, and the raw material is supplied from the space that corresponds to the space S3 between the partition plate <NUM> and the partition wall <NUM>, between the member that corresponds to the first blade <NUM> and the member that corresponds to the liner <NUM>. However, the gap between the liner <NUM> and the outer periphery of the first blade <NUM> is set to be relatively narrow. Therefore, there is a problem that the raw material remains in the space that corresponds to a space S3, causes local clogging, and does not smoothly transfer between the liner <NUM> and the outer periphery of the first blade <NUM>.

On the other hand, in the refining device <NUM>, the crushed piece M2 charged from the charging port <NUM> follows the route R described above, is transferred and defibrated, and is discharged from the discharge port <NUM>. As a result, it is possible to prevent the raw material from remaining in the apparatus as in the related art, and it is possible to realize a smooth and good refining treatment, that is, defibration treatment.

In addition, even in the refining device <NUM> of the present embodiment, there is a case where not all of the crushed pieces M2 charged from the charging port <NUM> follow the route R, and some of the crushed pieces M2 follow the route R' and transfers between the liner <NUM> and the outer peripheral portion of the first blade <NUM>, and this case is also included in the present disclosure. In this case, since the amount of the crushed pieces M2 following the route R' is small, the crushed piece M2 does not remain in the space S3 and cause clogging, and there is no case where smooth transfer of the crushed piece M2 between the liner <NUM> and the outer periphery of the first blade <NUM> fails.

In the refining device <NUM>, when the total amount of the crushed pieces M2 charged from the charging port <NUM> is set to V0 [kg/min], and the amount of the crushed pieces M2 following the route R, that is, the amount of the crushed pieces M2 introduced from the introduction port <NUM> and transferred to the space between the liner <NUM> and the outer periphery of the first blade <NUM> through the gap portion S1 is set to V1 [kg/min], the ratio of V1/V0 is not particularly limited, but <NUM> ≤ V1/V0 ≤ <NUM> is preferable, <NUM> ≤ V1/V0 ≤ <NUM> is more preferable, and <NUM> ≤ V1/V0 ≤ <NUM> is even more preferable. Further, the upper limit value of V1/V0 may be the number less than <NUM>, for example, the number in the range of approximately <NUM> to <NUM>, as a value unavoidable in the design of the device. By setting the ratio of V1/V0 to the above range, smoother and better refining treatment can be performed.

As described above, the refining device <NUM> includes: the casing <NUM> having the charging port <NUM> and the discharge port <NUM> of the crushed piece M2 as a raw material; the rotor <NUM> having the rotation shaft <NUM>, the first rotor portion <NUM> positioned on the charging port <NUM> side, the second rotor portion <NUM> positioned on the discharge port <NUM> side, and the partition wall <NUM> that separates the first rotor portion <NUM> and the second rotor portion <NUM>, and disposed on the inside of the casing <NUM>; and the liner <NUM> disposed on the inner surface of the casing <NUM> along the outer periphery of the rotor <NUM>. Further, the first rotor portion <NUM> has a plurality of first blades <NUM> that are open to the charging port <NUM> side and are radially installed around the rotation shaft <NUM> through the gap portion S1 blocked by the partition wall <NUM>, and the second rotor portion <NUM> has a plurality of second blades <NUM> radially installed around the rotation shaft <NUM>. Then, in a state where the rotor <NUM> is rotating, the crushed piece M2 charged from the charging port <NUM> is refined when sequentially passing between the gap portion S1 and the adjacent first blades <NUM>, and when sequentially passing between the first blade <NUM> and the liner <NUM> and between the second blade <NUM> and the liner <NUM>, and is discharged from the discharge port <NUM>. As a result, it is possible to prevent the raw material in the device from remaining, which occurred in the related art, and it is possible to perform smooth and good refining treatment.

Further, the refining device <NUM> has the side plate <NUM> that rotates together with the first rotor portion <NUM>, has the introduction port <NUM> for introducing the crushed piece M2, which is a raw material, into the gap portion S1 near the rotation shaft <NUM>, and is fixed to the first blade <NUM>. Thereby, the air flow from the introduction port <NUM> toward the gap portion S1 can be easily generated by the rotation of the first blade <NUM>. Therefore, smoother and better refining treatment can be performed.

Further, the partition wall <NUM> has an outer peripheral portion separated from the liner <NUM>, and is fixed to the first blade <NUM> and the second blade <NUM>. Accordingly, the first blade <NUM> and the second blade <NUM> can stably rotate together with the partition wall <NUM> in a state where the positional relationship is fixed with each other.

In the present embodiment, a configuration for performing refining using a strip-shaped crushed piece M2 as a raw material was described, but the present disclosure is not limited to this, and the shape of the raw material may be, for example, a scale-like, cotton-like, pellet-like, granular, or powdery shape. Moreover, although the case where the raw material contains fibers, that is, paper was described, the present disclosure is not limited to this, and the raw material may not contain fibers. The type of the raw material in the present disclosure is not particularly limited, and may be, for example, food such as grains, seeds, chemicals, fodder, fertilizer, industrial raw materials, industrial products, and the like. Accordingly, the raw material is finely refined, and when the raw material contains fibers, the present disclosure is applied as a defibrating unit that performs defibration into fine fibers, and when the raw material is a non-fibrous raw material, the present disclosure is applied as a crushing unit that performs fine crushing.

<FIG> is a longitudinal sectional view of a refining device according to a second embodiment.

Hereinafter, a second embodiment of the refining device of the present disclosure will be described with reference to <FIG>, but differences from the first embodiment will be described below, and the description of common points will be omitted.

As illustrated in <FIG>, the refining device <NUM> has a tubular guide member <NUM> that guides the crushed piece M2 charged from the charging port <NUM> to the introduction port <NUM>.

The guide member <NUM> is provided on the left side of the side plate <NUM>, that is, on the charging port <NUM> side. The left end portion of the guide member <NUM> is fixed to the partition plate <NUM> and the wall portion of the casing <NUM>. The right end portion of the guide member <NUM> is positioned at the edge portion of the introduction port <NUM> of the side plate <NUM> through a small gap. The rotation shaft <NUM> mutually communicates with the inside of the guide member <NUM>.

As indicated by the route R, the crushed piece M2 charged from the charging port <NUM> passes through the guide member <NUM> and is introduced into the gap portion S1 from the introduction port <NUM>. In the configuration of the present embodiment, the amount of the crushed piece M2 toward the space S3 can be extremely reduced by installing the guide member <NUM>. That is, the ratio of V1/V0 described above can be further increased. As a result, the flow of the crushed piece M2 indicated by the route R can be reliably formed, and the above-described effect of the present disclosure can be exhibited more remarkably.

As described above, the refining device <NUM> has a tubular guide member <NUM> that guides the crushed piece M2 charged from the charging port <NUM> to the introduction port <NUM>. As a result, the crushed piece M2 can be more reliably guided from the introduction port <NUM> to the gap portion S1, and smoother and better refining treatment can be performed.

Although not illustrated, the side plate <NUM> may be rotatably bonded to the right end portion of the guide member <NUM> through shaft bearings such as various bearings. Further, an elastic member such as a squeegee that fills the gap may be installed between the side plate <NUM> and the guide member <NUM>.

<FIG> is a lateral sectional view of a refining device according to a third embodiment.

Hereinafter, a third embodiment of the refining device of the present disclosure will be described with reference to <FIG>, but differences from the first embodiment will be described below, and the description of common points will be omitted.

As illustrated in <FIG>, the refining device <NUM> has a support member <NUM> for fixing the side plate <NUM> to the rotation shaft <NUM>. The support member <NUM> has a rod shape, one end portion of which is fixed to the outer peripheral portion of the rotation shaft <NUM>, and the other end portion of which is fixed to the edge portion of the introduction port <NUM> of the side plate <NUM>. In the present embodiment, three support members <NUM> are provided, and the support members <NUM> are radially disposed at equal angular intervals. However, the number, disposition, and the like of the support members <NUM> are not particularly limited, and support members having shapes different from those illustrated in the drawings may be used.

According to the present embodiment as described above, since the side plate <NUM> is supported by the support member <NUM>, the mechanical strength of the rotor <NUM> can be increased, and the rotation of the first rotor portion <NUM> and the first blade <NUM> belonging thereto is stabilized.

Therefore, the rotor <NUM> can be rotated at a relatively high speed, a stronger air flow can be generated, and the efficiency of the defibration treatment can be improved. In addition, since the rotation of the rotor <NUM> can be made more stable, smoother and better refining treatment can be performed.

The same applies to the above-described A1/A0 ratio and V1/V0 ratio also in the third embodiment.

In this manner, the side plate <NUM> is fixed to the rotation shaft <NUM> through the support member <NUM>. As a result, the rotation of the rotor <NUM> can be made more stable, the efficiency of the refining treatment can be improved by increasing the speed of the rotation of the rotor, and the smoother and better refining treatment can be realized.

Although the refining device of the present disclosure was described above with respect to each of the illustrated embodiments, the present disclosure is not limited thereto, and any section constituting the refining device can be replaced with any one having a configuration that can exhibit the same function. In addition, any component may be added to the refining device. Further, the refining device of the present disclosure may be a combination of the features of each embodiment.

Claim 1:
A refining device comprising:
a casing (<NUM>) having a charging port (<NUM>) and a discharge port (<NUM>) of a raw material;
a rotor (<NUM>) having a rotation shaft (<NUM>), a first rotor portion (<NUM>) positioned on the charging port side, a second rotor portion (<NUM>) positioned on the discharge port side, and a partition wall (<NUM>) that separates the first rotor portion and the second rotor portion, and disposed on an inside of the casing; and
a liner (<NUM>) disposed on an inner surface of the casing along an outer periphery of the rotor, wherein
the first rotor portion has a plurality of first blades (<NUM>) radially installed around the rotation shaft through a gap portion (S1) which is open on the charging port side and blocked by the partition wall,
the second rotor portion has a plurality of second blades (<NUM>) radially installed around the rotation shaft, and
in a state where the rotor is rotating, the raw material charged from the charging port is refined when sequentially passing between the gap portion and the adjacent first blades and when sequentially passing between the first blade and the liner and between the second blade and the liner, and is discharged from the discharge port.