Patent Description:
In a production process of a felt product, hydrophobic modification and drying are required. However, existing apparatuses have a poor effect and low efficiency on the modification and drying of the felt product, affect the quality of the felt product, have a low automation degree, highly depend on workers, and volatilize substances harmful to workers' health in the working process.

<CIT> discloses an apparatus for continuous, essentially waterless dyeing textile or plastic materials that eliminates all polluting effluents. Therefore, the apparatus is divided into four sections. A dyeing section, a cooling and padding section, a washing section and a drying section. The non-dyed material is stored on a coil and continuously carried through the four sections. The continuous material is carried through the dyeing- and the cooling section by a tenter conveyor and through the washing and drying section by conveyor rolls, wherein the tenter conveyor allows the material to shrink in longitudinal and transverse direction. The rolls are arranged in a pair and act like squeeze rollers. After passing the drying section, the dyed and dried material is stored on a coil. To eliminate polluting effluents, filter circuits for liquids and air are arranged to each section.

The apparatus of <CIT> is designed as a short-run dyeing machine. It also comprises a dyeing-, spraying-, washing- and drying section which are arranged next to each other in only one chamber. The four sections were separated by bulkheads which doesn't reach to the upper regions of the chamber.

The technical problem to be solved by the present invention is to overcome the defects in the prior art and provide a felt product modifying and drying apparatus being capable of well modifying and drying a felt product, having a high working efficiency and improving the product quality.

In order to solve the above technical problem, the present invention adopts the following technical solution: a felt product modifying and drying apparatus includes:.

Further, in order to prevent a modifying solution and gas in the modifying tunnel machine, the water washing spraying device and the drying tunnel machine from being outwards leaked, the felt product modifying and drying apparatus further includes:.

A specific structure of the modifying tunnel machine is further provided. The modifying tunnel machine includes:.

Specific structures of the modifying solution circulation and heating system and the modifying solution supplementing and acid solution collecting system are further provided. The modifying solution circulation and heating system includes a circulation heat exchanger, a solution inlet and a solution outlet of the circulation heat exchanger respectively communicate with the modifying box through circulation heat exchange pipes, a first pump unit is connected onto the circulation heat exchange pipe connected with the solution inlet of the circulation heat exchanger so as to enable the modifying solution in the modifying box to enter the circulation heat exchanger under the effect of the first pump unit and to return to the modifying box after being heated by the circulation heat exchanger, and the modifying solution circulation and heating system further includes a modifying solution filtering device connected between the modifying box and the first pump unit and configured to filter the modifying solution.

The modifying solution supplementing and acid solution collecting system includes an acid solution collecting tank, a modifying solution supplementing tank, a waste solution filtering device, a solution supplementing heat exchanger and at least one acid solution settling tank, the acid solution settling tank communicates with the bottom of the modifying box through a second pump unit so as to enable a waste solution settled at the bottom of the modifying box to enter the acid solution settling tank through the second pump unit, the waste solution filtering device is connected between the modifying box and the second pump unit so as to filter the waste solution discharged from the modifying box through the waste solution filtering device, the acid solution collecting tank communicates with the bottom of the acid solution settling tank through a third pump unit so as to collect the acid solution settled at the bottom of the acid solution settling tank through the acid solution collecting tank, a solution inlet of the modifying solution supplementing tank communicates with the top of the acid solution settling tank through a fourth pump unit so as to recover the modifying solution floating at an upper end portion of the acid solution settling tank, the solution inlet of the modifying solution supplementing tank further communicates with the external modifying solution supplementing system, a solution outlet of the modifying solution supplementing tank communicates with a solution inlet of the solution supplementing heat exchanger through a fifth pump unit, a solution outlet of the solution supplementing heat exchanger communicates with a head end of the modifying box, the solution outlet of the modifying solution supplementing tank further communicates with a tail end of the modifying box through a solution supplementing pipe, and top ends of the acid solution settling tank and the acid solution collecting tank respectively communicate with the solution supplementing pipe.

A specific structure of the water washing spraying device is further provided. The water washing spraying device includes:.

The spraying device includes a water supply pipe and a plurality of sprayers respectively communicating with the water supply pipe, the plurality of sprayers are divided into two groups, one group of sprayers are located above the felt product and are configured to spray water to an upper surface of the felt product, and the other group of sprayers are located under the felt product and are configured to spray water to a lower surface of the felt product.

A specific structure of the drying tunnel machine is further provided. The drying tunnel machine includes:.

Specific structures of the main circulation system and the branched circulation system are provided. The main circulation system includes at least one main circulation assembly, the main circulation assembly includes a main circulation fan and a heater, the main circulation fan is connected between the drying box and an air inlet of the heater so as to extract the air by the main circulation fan from the drying box to the heater, and an air outlet of the heater communicates with the hot air spraying device so as to heat the air extracted into the heater by the heater and transmit the air to the hot air spraying device.

The branched circulation system includes a condensate recovering system and at least one branched circulation assembly, the branched circulation assembly includes a branched circulation fan and a condenser, the branched circulation fan is connected between the drying box and an air inlet of the condenser so as to extract the air by the branched circulation fan from the drying box to the condenser, the condenser is configured to condense out condensates from the air extracted into the condenser, the condensate recovering system communicates with a condensate outlet of the condenser so as to collect the condensates, an air outlet of the condenser also communicates with the main circulation fan so as to extract cold air generating condensates into the heater to be heated through the main circulation fan.

Specific structures of the first water sealing device and the second water sealing device are further provided. Each of the first water sealing device and the second water sealing device includes a water tank, the water tank is provided with a V-shaped passage, a feeding opening communicating with one end portion of the V-shaped passage, and a discharging opening communicating with the other end portion of the V-shaped passage, the felt product enters the V-shaped passage from the feeding opening and passes out from the discharging opening, and water for isolating and sealing the feeding opening and the discharging opening is contained in the V-shaped passage.

The discharging opening of the first water sealing device is connected with the felt product inlet of the modifying tunnel machine in a sealed manner.

The feeding opening of the second water sealing device is connected with the felt product outlet of the drying tunnel machine in a sealed manner.

A plurality of support rollers configured to support the felt product are rotatably supported in the V-shaped passage along an extending direction of the V-shaped passage.

Two press rollers configured to crimp the felt product are rotatably supported at a bending position inside the V-shaped passage, one press roller is located at the left side of the lowermost support roller, and the other press roller is located at the right side of the lowermost support roller.

Further, in order to prevent dust from polluting a workshop environment, the felt product modifying and drying apparatus further includes a dust collecting device disposed on the rolling device and configured to collect dust generated in a process of rolling the felt product.

The present invention further provides a working method for a felt product modifying and drying apparatus according to claim <NUM>.

By adopting the above technical solution, after the felt product roll is unrolled by the unrolling device, the transmission device sequentially transmits the unrolled felt product to the modifying tunnel machine, the water washing spraying device, the drying tunnel machine and the rolling device, in the felt product transmission process, the modifying tunnel machine modifies the felt product unrolled by the unrolling device, the water washing spraying device washes the felt product modified by the modifying tunnel machine with water, the drying tunnel machine dries the felt product washed by the water washing spraying device with water, and the rolling device rolls the felt product dried by the drying tunnel machine. According to the present invention, the felt product modifying and drying apparatus can complete modification and drying of the felt product very well, and achieves high product quality, high working efficiency, high automation degree and labor cost reduction. The modifying tunnel machine, the water washing spraying device and the drying tunnel machine of the present invention are connected in a sealed manner, additionally, the first water sealing device is disposed at a head section of the modifying tunnel machine, and the second water sealing device is disposed at the tail end of the drying tunnel machine, so that gas and the modifying solution in the modifying tunnel machine, the water washing spraying device and the drying tunnel machine can be well prevented from being outwards leaked. The present invention can further recover and utilize the modifying solution discharged along with the acid solution, so that the cost is reduced.

In order that the present invention may be more easily and clearly understood, a further detailed illustration on the present invention is provided hereafter according to specific embodiments in conjunction with drawings.

As shown in <FIG>, a felt product modifying and drying apparatus includes:.

As shown in <FIG> and <FIG>, in order to prevent a modifying solution and gas in the modifying tunnel machine <NUM>, the water washing spraying device <NUM> and the drying tunnel machine <NUM> from being outwards leaked, the felt product modifying and drying apparatus further includes:.

The felt product <NUM> unrolled by the unrolling device <NUM> passes through the first water sealing device <NUM> and then enters the modifying tunnel machine <NUM>.

The felt product <NUM> going out from the drying tunnel machine <NUM> passes through the second water sealing device <NUM> and is then rolled by the rolling device <NUM>.

A felt product outlet of the modifying tunnel machine <NUM> and a felt product inlet of the water washing spraying device <NUM> are connected in a sealed manner, and a felt product outlet of the water washing spraying device <NUM> and a felt product inlet of the drying tunnel machine <NUM> are connected in a sealed manner.

As shown in <FIG> and <FIG>, the modifying tunnel machine <NUM> includes:.

As shown in <FIG> and <FIG>, the modifying solution circulation and heating system includes a circulation heat exchanger <NUM>. A solution inlet and a solution outlet of the circulation heat exchanger <NUM> respectively communicate with the modifying box <NUM> through circulation heat exchange pipes. A first pump unit is connected onto the circulation heat exchange pipe connected with the solution inlet of the circulation heat exchanger <NUM> so as to enable the modifying solution in the modifying box <NUM> to enter the circulation heat exchanger <NUM> under the effect of the first pump unit and to return to the modifying box <NUM> after being heated by the circulation heat exchanger <NUM>. The modifying solution circulation and heating system further includes a modifying solution filtering device <NUM> connected between the modifying box <NUM> and the first pump unit and configured to filter the modifying solution.

The modifying solution supplementing and acid solution collecting system includes an acid solution collecting tank <NUM>, a modifying solution supplementing tank <NUM>, a waste solution filtering device <NUM>, a solution supplementing heat exchanger <NUM> and at least one acid solution settling tank <NUM>. The acid solution settling tank <NUM> communicates with the bottom of the modifying box <NUM> through a second pump unit so as to enable a waste solution settled at the bottom of the modifying box <NUM> to enter the acid solution settling tank <NUM> through the second pump unit. The waste solution filtering device <NUM> is connected between the modifying box <NUM> and the second pump unit so as to filter the waste solution discharged from the modifying box <NUM> through the waste solution filtering device <NUM>. The acid solution collecting tank <NUM> communicates with the bottom of the acid solution settling tank <NUM> through a third pump unit so as to collect the acid solution settled at the bottom of the acid solution settling tank <NUM> through the acid solution collecting tank <NUM>. A solution inlet of the modifying solution supplementing tank <NUM> communicates with the top of the acid solution settling tank <NUM> through a fourth pump unit so as to recover the modifying solution floating at an upper end portion of the acid solution settling tank <NUM>. The solution inlet of the modifying solution supplementing tank <NUM> further communicates with the external modifying solution supplementing system. A solution outlet of the modifying solution supplementing tank <NUM> communicates with a solution inlet of the solution supplementing heat exchanger <NUM> through a fifth pump unit. A solution outlet of the solution supplementing heat exchanger <NUM> communicates with a head end of the modifying box <NUM>. The solution outlet of the modifying solution supplementing tank <NUM> further communicates with a tail end of the modifying box <NUM> through a solution supplementing pipe. Top ends of the acid solution settling tank <NUM> and the acid solution collecting tank <NUM> respectively communicate with the solution supplementing pipe. Specifically, the waste solution mainly includes the acid solution. However, there is the modifying solution mixed into the acid solution in the acid solution discharging process. In the present embodiment, the circulation heat exchanger <NUM> and the solution supplementing heat exchanger <NUM> are both graphite block hole type heat exchangers using steam as a heat medium and providing the heat medium in a unified way by using a steam supply system. The acid solution obtained through displacement in the modifying box <NUM> has high density, and is deposited at the bottom of the modifying box <NUM>. In the modifying box <NUM>, a lower layer is the acid solution, and the upper layer is the modifying solution. The circulation heat exchange pipe connected with the solution inlet of the circulation heat exchanger extends into the modifying solution layer of the modifying box <NUM>, and the circulation heat exchange pipe connected with the solution outlet of the circulation heat exchanger extends into or out of the modifying solution layer of the modifying box <NUM>. A solution supplementing pipe extends into a middle position of the modifying box <NUM> in a height direction.

The unrolled felt product <NUM> enters the modifying box <NUM>, and moves in the modifying box <NUM> under the effect of the transmission device. A portion of the felt product <NUM> located in the modifying box <NUM> is immersed into the modifying solution, and the displacement speed of the modifying solution and the acid solution in the felt product <NUM> is accelerated by the ultrasonic device <NUM>. In this process, the first pump unit of the modifying solution circulation and heating system pumps the modifying solution from the modifying box <NUM> to the circulation heat exchanger <NUM>, the modifying solution indirectly heated by the circulation heat exchanger <NUM> returns to the modifying box <NUM>, and waste solution settled at the bottom of the modifying box <NUM> is discharged into the settling tank <NUM> under the effect of the second pump unit. The displacement speed is further accelerated, and the displacement effect is ensured. The acid solution and the modifying solution discharged along with the acid solution are separated in the acid solution settling tank <NUM>. Then, the acid solution is collected through the acid solution collecting tank <NUM>. The modifying solution separated out from the acid solution settling tank <NUM> directly returns to the modifying box <NUM> or enters the modifying solution supplementing tank <NUM>, the modifying solution is recovered and utilized, the modifying solution is saved, and the modification cost is reduced. There is loss of the modifying solution in the modifying box <NUM>, the present invention supplements the modifying solution to the modifying box <NUM> through the modifying solution supplementing tank <NUM>, and the automation degree is high.

As shown in <FIG> and <FIG>, the water washing spraying device <NUM> includes:.

The spraying device includes a water supply pipe and a plurality of sprayers <NUM> respectively communicating with the water supply pipe. The plurality of sprayers <NUM> are divided into two groups, one group of sprayers <NUM> are located above the felt product <NUM> and are configured to spray water to an upper surface of the felt product <NUM>, and the other group of sprayers <NUM> are located under the felt product <NUM> and are configured to spray water to a lower surface of the felt product <NUM>. In the present embodiment, in order to increase a spraying area and prolong retain time of water on the felt product <NUM>, the felt product <NUM> located on the transmission device in the water washing spraying device <NUM> is in a V shape. The automatic water supplementing device includes a water supplementing box, an electromagnetic valve, a low-liquid-level switch and a high-liquid-level switch. The low-liquid-level switch is electrically connected with the electromagnetic valve, is located at a low-liquid-level position of the water collecting device <NUM>, and is configured to trigger the electromagnetic valve to be opened when a liquid level in the water collecting device <NUM> descends to a low liquid level. The high-liquid-level switch is electrically connected with the electromagnetic valve, is located at a high-liquid-level position of the water collecting device <NUM>, and is configured to trigger the electromagnetic valve to be closed when the liquid level in the water collecting device <NUM> ascends to a high liquid level. The electromagnetic valve is connected between the water supplementing box and the water collecting device <NUM>, and is configured to control a break-and-make state between the water supplementing box and the water collecting device <NUM>.

The spraying device sprays water to the felt product <NUM> to further flush away dirt on the surface of the felt product <NUM>. Spraying water falls back into the spraying box <NUM>. The spraying water collected in the spraying box <NUM> is filtered by the spraying water filtering device <NUM> and then enters the water collecting device <NUM>. The water in the water collecting device <NUM> enters the spraying device under the effect of the circulation pump, and is then sprayed out through the sprayers <NUM>. The present invention can cyclically utilize the spraying water, avoids the water waste, and reduces the spraying cost. The present invention further supplements water to the spraying device through the automatic water supplementing device. Under the condition of spraying water loss existence, the water collecting device <NUM> is stilled enabled to continuously supply water for the spraying device. The sprayers <NUM> of the present invention are divided into an upper group and a lower group. The upper surface and the lower surface of the felt product <NUM> are sprayed at the same time, and a water washing effect is ensured. Additionally, a section portion of the felt product <NUM> located at the spraying device is bent into a V shape, a spraying area is increased, the remaining time of the spraying water on the felt product <NUM> is prolonged, and the flushing effect is further ensured.

As shown in <FIG> and <FIG>, the drying tunnel machine <NUM> includes:.

As shown in <FIG> and <FIG>, the main circulation system includes at least one main circulation assembly. The main circulation assembly includes a main circulation fan <NUM> and a heater <NUM>. The main circulation fan <NUM> is connected between the drying box <NUM> and an air inlet of the heater <NUM> so as to extract the air by the main circulation fan <NUM> from the drying box <NUM> to the heater <NUM>. An air outlet of the heater <NUM> communicates with the hot air spraying device so as to heat the air extracted into the heater <NUM> by the heater <NUM> and transmit the air to the hot air spraying device.

The branched circulation system includes a condensate recovering system <NUM> and at least one branched circulation assembly. The branched circulation assembly includes a branched circulation fan <NUM> and a condenser <NUM>. The branched circulation fan <NUM> is connected between the drying box <NUM> and an air inlet of the condenser <NUM> so as to extract the air by the branched circulation fan <NUM> from the drying box <NUM> to the condenser <NUM>. The condenser <NUM> is configured to condense out condensates from the air extracted into the condenser. The condensate recovering system <NUM> communicates with a condensate outlet of the condenser <NUM> so as to collect the condensates. An air outlet of the condenser <NUM> also communicates with the main circulation fan <NUM> so as to extract cold air generating condensates through the main circulation fan <NUM> into the heater <NUM> to be heated. In the present embodiment, a box wall of the drying box <NUM> sequentially includes an inner liner, a heat insulation layer and an outer wall from inside to outside. In order to perform dust removal on the gas in the drying box <NUM> and to avoid dust mixed in the condensates, the branched circulation fan <NUM> communicates with the drying box <NUM> through a cloth bag type dust collector <NUM>.

The felt product <NUM> enters the drying box <NUM> after being washed by the water washing spraying device <NUM> with water. The felt product <NUM> is transmitted along the drying box <NUM> under the effect of the transmission device. In the moving process of the felt product <NUM> along the drying box <NUM>, a plurality of hot air spraying pipes spray and blow hot air to the upper surface and the lower surface of the felt product <NUM> at the same time. Meanwhile, the main circulation system extracts the air from the drying box <NUM> to be heated, and provides the heated hot air for the hot air spraying device. The branched circulation system extracts the air from the drying box <NUM> to be condensed so as to condense out condensates from the air. The acid solution and the modifying solution are mixed in the condensates. The condensate recovering system <NUM> of the branched circulation system separates and respectively recovers the acid solution and the modifying solution in the condensates. The air cooled through the condenser <NUM> returns to the drying box <NUM> again after being heated by the main circulation system. The felt product modifying and drying apparatus of the present invention can dry the felt product <NUM> very well, can repeatedly utilize gas in the drying box <NUM>, and can well recover the acid solution and the modifying solution. The present invention is reasonable in structure design and high in automation degree, reduces the manual participation degree, and avoids the harm to human bodies in a drying process of the felt product <NUM>.

As shown in <FIG> and <FIG>, each of the first water sealing device <NUM> and the second water sealing device <NUM> includes a water tank. The water tank is provided with a V-shaped passage <NUM>, a feeding opening <NUM> communicating with one end portion of the V-shaped passage <NUM>, and a discharging opening <NUM> communicating with the other end portion of the V-shaped passage <NUM>. The felt product <NUM> enters the V-shaped passage <NUM> from the feeding opening <NUM> and passes out from the discharging opening <NUM>. Water for isolating and sealing the feeding opening <NUM> and the discharging opening <NUM> is contained in the V-shaped passage <NUM>.

The discharging opening <NUM> of the first water sealing device <NUM> is connected with the felt product inlet of the modifying tunnel machine <NUM> in a sealed manner.

The feeding opening <NUM> of the second water sealing device <NUM> is connected with the felt product outlet of the drying tunnel machine <NUM> in a sealed manner.

A plurality of support rollers <NUM> configured to support the felt product <NUM> are rotatably supported in the V-shaped passage <NUM> along an extending direction of the V-shaped passage <NUM>.

Two press rollers <NUM> configured to crimp the felt product <NUM> are rotatably supported at a bending position inside the V-shaped passage <NUM>. One press roller <NUM> is located at the left side of the lowermost support roller <NUM>, and the other press roller <NUM> is located at the right side of the lowermost support roller <NUM>. In the present embodiment, fixing shafts in one-to-one correspondence to the support rollers <NUM> and the press rollers <NUM> are disposed in the V-shaped passage <NUM>. The support rollers <NUM> and the press rollers <NUM> are rotatablely sleeved on the corresponding fixing shafts. In order to conveniently add water into the V-shaped passage <NUM>, at least one water adding opening communicating with the V-shaped passage <NUM> is formed in an upper wall of the water tank. A cover <NUM> is disposed on the water adding opening. The cover <NUM> is connected to the corresponding water adding opening through screw threads, or one end of the cover <NUM> is hinged onto the water tank. In order to avoid a condition that the V-shaped passage <NUM> is filled with too much water so that the water flows out from the feeding opening <NUM> and the discharging opening <NUM>, an overflow opening <NUM> communicating with the V-shaped passage <NUM> is formed in a position of the water tank near the feeding opening <NUM> or the discharging opening <NUM>. The located height of the overflow opening <NUM> is lower than the located height of the feeding opening <NUM> and the discharging opening <NUM>. In order to conveniently install pressure difference sensors and further conveniently measure pressure differences between the feeding opening <NUM> and the discharging opening <NUM>, pressure difference installing holes <NUM> for installing the pressure difference sensors are respectively disposed in positions of the water tank near the feeding opening <NUM> and the discharging opening <NUM>, and the located height of the pressure difference installing holes <NUM> is higher than the located height of the overflow opening <NUM>. In order to achieve automatic water addition when the water in the V-shaped passage <NUM> is consumed to the low liquid level, the water sealing device for the felt product modifying and drying apparatus further includes an automatic water supplementing device connected with the V-shaped passage <NUM> and configured to automatically supplement water for the V-shaped passage <NUM>.

The V-shaped passage <NUM> is filled with water, a sealing effect is further achieved through the blockage by the water, and further, the leakage of the modifying solution and gas can be well avoided. The present invention is simple in structure, easy in implementation and low in cost. Support rollers <NUM> and press rollers <NUM> are disposed in the water tank. Therefore, the felt product <NUM> located in the V-shaped passage <NUM> can be tensioned, the felt product <NUM> can be well attached onto the support rollers <NUM>, and resistance when the felt product <NUM> passes through the V-shaped passage <NUM> can be reduced. There is water loss in the V-shaped passage <NUM>, the present invention further supplements water through the automatic water supplementing device, the sealing effect failure caused by too low liquid level is effectively avoided, artificial attendant and monitoring are also avoided, and convenience and labor saving are achieved.

In the present embodiment, as shown in <FIG>, the felt product <NUM> has a serious dust falling phenomenon, so that obvious dust will be generated in a collection process by the rolling device <NUM>. In order to prevent dust from polluting a workshop environment, the felt product modifying and drying apparatus further includes a dust collecting device <NUM> disposed on the rolling device <NUM> and configured to collect dust generated in a process of rolling the felt product <NUM>. In the present embodiment, the dust collecting device <NUM> mainly includes a cloth bag type dust collector <NUM>.

A working method for the felt product modifying and drying apparatus according to Embodiment <NUM> includes the following steps:.

A working principle of the present invention is as follows:
After the felt product roll is unrolled by the unrolling device <NUM>, the transmission device sequentially transmits the unrolled felt product <NUM> to the modifying tunnel machine <NUM>, the water washing spraying device <NUM>, the drying tunnel machine <NUM> and the rolling device <NUM>. In the transmission process of the felt product <NUM>, the modifying tunnel machine <NUM> modifies the felt product <NUM> unrolled by the unrolling device <NUM>. The water washing spraying device <NUM> washes the felt product <NUM> modified by the modifying tunnel machine <NUM> with water. The drying tunnel machine <NUM> dries the felt product <NUM> washed by the water washing spraying device <NUM> with water. The rolling device <NUM> rolls the felt product <NUM> dried by the drying tunnel machine <NUM>. The felt product modifying and drying apparatus of the present invention can complete modification and drying of the felt product <NUM> very well, and achieves high product quality, high working efficiency, high automation degree and labor cost reduction. The modifying tunnel machine <NUM>, the water washing spraying device <NUM> and the drying tunnel machine <NUM> of the present invention are connected in a sealed manner. Additionally, the first water sealing device <NUM> is disposed at a head section of the modifying tunnel machine <NUM>, and the second water sealing device <NUM> is disposed at the tail end of the drying tunnel machine <NUM>, so that gas and the modifying solution in the modifying tunnel machine <NUM>, the water washing spraying device <NUM> and the drying tunnel machine <NUM> can be well prevented from being outwards leaked. The present invention can further recover and utilize the modifying solution discharged along with the acid solution, so that the cost is reduced.

The specific embodiments described above further describe the solved technical problems, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention.

In the descriptions of the present invention, it should be understood that the terms indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, are only for convenience of describing the present invention and simplifying the descriptions, are not intended to indicate or imply that the referenced apparatus or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present invention.

In the present invention, unless otherwise clearly specified and defined, terms "install", "interconnect", "connect", "fix", etc. should be understood in a broad sense, for example, it may be connected in a fixed, detachable or integrated manner; it may be mechanically or electrically connected; it may be directly connected or indirectly connected via an intermediate media; and it may be communication inside two elements or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention may be understood according to specific circumstances.

In the descriptions of the present invention, it should be noted that terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, or the conventionally placed orientation or the positional relationship in a use process of a product of the present invention, are only for convenience of describing the present invention and simplifying the descriptions, are not intended to indicate or imply that the referenced apparatus or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present invention. Additionally, terms "first", "second", "third", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

Additionally, terms "horizontal", "vertical", "overhanging", etc. do not mean that the element is required to be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

Claim 1:
A felt product modifying and drying apparatus, comprising:
an unrolling device (<NUM>), configured to support a felt product roll and unroll the felt product roll;
a modifying tunnel machine (<NUM>), configured to modify a felt product (<NUM>) unrolled by the unrolling device (<NUM>);
a water washing spraying device (<NUM>), configured to wash the felt product (<NUM>) modified by the modifying tunnel machine (<NUM>) with water;
a drying tunnel machine (<NUM>), configured to dry the felt product (<NUM>) washed by the water washing spraying device (<NUM>) with water;
a rolling device (<NUM>), configured to roll the felt product (<NUM>) dried by the drying tunnel machine (<NUM>); and
a transmission device, penetrating through the modifying tunnel machine (<NUM>), the water washing spraying device (<NUM>) and the drying tunnel machine (<NUM>) and configured to transmit the felt product (<NUM>) unrolled by the unrolling device (<NUM>) to sequentially pass through the modifying tunnel machine (<NUM>), the water washing spraying device (<NUM>) and the drying tunnel machine (<NUM>),
wherein the modifying tunnel machine (<NUM>) comprises:
a modifying box (<NUM>), wherein a modifying solution is contained in the modifying box (<NUM>), and at least one section of the felt product (<NUM>) on the transmission device located in the modifying box (<NUM>) is immersed in the modifying solution;
at least one ultrasonic device (<NUM>), configured to accelerate a displacement speed of the modifying solution and an acid solution in the felt product (<NUM>) and disposed in the modifying box (<NUM>);
a modifying solution circulation and heating system, connected with the modifying box (<NUM>) and configured to extract the modifying solution from the modifying box (<NUM>), heat the extracted modifying solution and return the heated modifying solution to the modifying box (<NUM>); and
a modifying solution supplementing and acid solution collecting system, connected with the modifying box (<NUM>) and configured to supplement the modifying solution into the modifying box (<NUM>) and collect the acid solution obtained through displacement.