Fiber pre-dispersing device for fiber reinforced concrete

A fiber pre-dispersing device for fiber reinforced concrete, comprising: a dispersing chamber, a feed inlet is installed on the upper side of a dispersing chamber, a hopper is installed in the feed inlet, a first dispersing device is installed in the dispersing chamber, a discharge outlet is installed at the bottom of the dispersing chamber, and connected with a second dispersing device, grooves are arranged at both sides of dispersing chamber, supporting legs are installed in the grooves. According to the invention, the device has a first dispersing device and a second dispersing device, and the dispersing blocks in the first dispersing device cooperates with the dispersing gears of the roller to preliminarily disperse and stir the fiber raw materials, a second dispersing device; dispersing the preliminary dispersed fiber raw materials, in order to control the fineness of pre-dispersed fiber raw materials, oil cylinders arranged on both sides can push their respective grinding cylinders to adjust the dispersion, thus improving both fiber dispersion effect and using the effect in concrete works.

TECHNICAL FIELD

This invention relates to the technical field of fiber dispersion, particularly related to fiber pre-dispersing device for fiber reinforced concrete.

BACKGROUND

Concrete is widely used in the field of civil engineering because of its high strength, stiffness, impact resistance, earthquake resistance and durability, as well as science and technology advances, the quality requirements of concrete are getting higher and higher. Engineering practice has proved that concrete has some defects such as low flexural and tensile strength, high brittleness and poor to ness, which severely limits its application in engineering.

Therefore, the common practice in engineering is to take corresponding measures to improve some structural properties of concrete itself

For this purpose, people often nix reinforced fiber materials in the preparation of concrete materials to improve the brittleness and durability of concrete, arid this method has been gradually popularized and applied in practice. When the fiber reinforced concrete gets bent, the concrete matrix transmits the tensile stress to the interface, and the interface in turn transmits the force to the fibers randomly distributed in the concrete, then the fibers in the concrete realize the main bearing capacity, and the fibers can bear the larger tensile stress, hindering the crack propagation. A lot of studies have concluded that adding fiber can improve the flexural strength and toughness of concrete. However, if the fiber is not pre-dispersed before use, it could affect the dispersion effect in fracturing fluid, resulting in poor performance. Nowadays, the fibers are pre-dispersed manually, often leading to poor dispersion effect. Therefore, if the fiber dispersion effect cannot be improved, the use effect of fibers in concrete construction would be greatly reduced.

SUMMARY

In order to solve the problem described above, this invention provides a fiber pre-dispersing device for fiber reinforced concrete described as follows.

A fiber pre-dispersing device for fiber reinforced concrete, includes: a dispersing chamber, a feed inlet is installed on the upper side of the dispersing chamber, a hopper is installed in the feed inlet, a first dispersing device is installed in the dispersing chamber, a discharge outlet is installed at the bottom of the dispersing chamber, and connected with a second dispersing device, grooves are arranged on both sides of the dispersing chamber, supporting legs are installed in the grooves.

The first dispersing device includes a main shaft, both sides of the main shaft are connected with bearings, and the bearings are installed in the dispersing chamber, one side of the main shaft is connected with a first motor, a first motor is installed at one side of the dispersing chamber, the main shaft is connected with four dispersing rods, and the four dispersing rods are uniformly arranged on the main shaft with an included angle of 45 degrees, the other side of the dispersing rod is connected with a dispersing block, two sides of the main shaft are connected with a plurality of connecting frames, the connecting frames are uniformly arranged on the main shaft in a cross shape, and connecting rods connect the connecting frames on both sides, the connecting rods are sleeved with a roller, and the surface of the roller is connected with. a plurality of dispersing gears.

The second dispersing device includes a discharging box, oil cylinders are installed at both sides of the discharging box, the power output end of the oil cylinders is connected with a T-shaped push plate, and two sides of the T-shaped push plate are connected with slide plates, the discharging box is provided with a chute at the slide plate, the slide plate is slidably installed in the chute, bearing blocks are installed in the slide plates on both sides, and rotating rods are connected between the bearing blocks on both sides, both sides of the discharging box are provided with adjusting grooves, the rotating rod is slidably installed in the adjusting grooves, and a second motor is installed on both sides of the sliding plates, and the power output end of a second motor is connected with the rotating rod, the rotating rods on both sides are connected with a grinding cylinder, the surface of the grinding cylinder is connected with a plurality of grinding gears, and the grinding gears on both sides are arranged crosswise.

Further, the bottom of the supporting leg is provided with anti-slip shading in a wavy structure, which can provide better support to the device.

Further, a check valve is installed on the top of the discharge box, which can control the flow of discharge.

Further, the outer sides of a first motor and a second motor are sleeved with protective sleeves, which can offer protection to a first motor and a second motor.

Further, stiffeners are welded at the joint of the T-shaped push plate and the slide plates on both sides. This structural design strengthens the connection effect between the T-shaped push plate and the slide plates on both sides.

Further, the upper and lower sides of the chute are provided with guide grooves, guide rods are installed in the guide grooves, the guide rods are connected with guide blocks in a sliding way, and the guide blocks are fixedly installed on the slide plates. This structural design makes the slide plates more stable during moving.

Further, folding baffles are connected between the slide plates on both sides. This structural design is convenient for shielding the adjusting groove.

Further, the dispersing gears are arranged in a conical structure. This structural design improves the predispersion effect.

A fiber dispersion-improving method based on the fiber pre-dispersing device for fiber reinforced concrete includes the following steps:

S1, putting fiber raw materials to be dispersed into a hopper, wherein the materials enter the dispersing chamber through the hopper;

S2, starting a first dispersing device, wherein dispersing blocks and dispersing gears matched with rollers preliminarily disperse and stir the fiber raw materials described in S1 in the dispersing device; the degree of dispersing fiber raw materials can be adjusted by controlling the rotation speed of a first motor;

S3, opening the check valve to make the pre-dispersed fiber materials fall into a second dispersing device after the fibers are pre-dispersed in S2, wherein a first dispersing device keeps rotating, which can effectively prevent the entrance from being blocked; and

S4, starting a second dispersing device to disperse the pre-dispersed fiber raw materials again, wherein oil cylinders on both sides can push the respective grinding cylinders for adjustment, in order to control the fineness of fiber raw material dispersion, achieving an improved dispersion; effect.

The beneficial effects of this invention are described as follows:

According to the invention, a first dispersing device and a second dispersing device are arranged in the device,-the dispersing blocks, and dispersing gears matched with rollers preliminarily disperse and stir the fiber raw materials in the dispersing device, starting a second dispersing device to disperse the pre-dispersed fiber raw materials again, oil cylinders on both sides can push the respective grinding cylinders for adjustment, in order to control the fineness of fiber raw material dispersion, thus achieving an improved dispersion effect.

Description of reference numerals in the drawings:

DETAILED DESCRIPTION OF EMBODIMENTS

In order to enable those skilled in the art to better understand the present invention, the technical scheme of the present invention will be further explained below with reference to the figures and embodiments.

As shown inFIGS.1-5, a feed inlet is installed on the upper side of the dispersing chamber1, a hopper2is installed in the feed inlet, a first dispersing device3is installed in the dispersing chamber1, a discharge outlet is installed at the bottom of the dispersing chamber1, and connected with a second dispersing device4, and grooves are arranged on both sides of the dispersing chamber1, supporting legs5are installed in the grooves.

The first dispersing device3includes a main shaft6, both sides of the main shaft6are connected with bearings7, and the bearings7are installed in the dispersing chamber1, one side of the main shaft6is connected with a first motor8, the first motor8is installed at one side of the dispersing chamber1, the main shaft6is connected with four dispersing rods9, and the four dispersing rods9are uniformly arranged on the main shaft6with an included angle of 45 degrees, the other side of the dispersing rod9is connected with a dispersing block10, two sides of the main shaft6are connected with a plurality of connecting frames11, the connecting frames11are uniformly arranged on the main shaft6in a cross shape, and connecting rods12connect the connecting frames11on both sides, the connecting rod12is sleeved with a roller13, and the surface of the roller13is connected with a plurality of dispersing gears14.

The second dispersing device4includes a discharging box15, oil cylinders16are installed at both sides of the discharging box15, the power output end of the oil cylinder16is connected with a T-shaped push plate17, and two sides of the T-shaped push plate17are connected with slide plates18, the discharging box15is provided with a chute at the slide plate18, the slide plate18is slidably installed in the chute, bearing blocks19are installed in the slide plates18on both sides, and rotating rods20connect the bearing blocks19on both sides, two sides of the discharging box15are provided with adjusting grooves21, the rotating rod20is slidably installed in the adjusting grooves21, and a second motor22is installed on each of the both side of the sliding plates18, and the power output end of a second motor22is connected with the rotating rod20, the rotating rods20on both sides are connected with a grinding cylinder23, the surface of the grinding cylinder23is connected with a plurality of grinding gears24, and the grinding gears24on both sides are arranged crosswise.

Preferably, e bottom of the supporting leg5is provided with anti-slip shading in a wavy structure. This structural design makes the support more stable, In practice, other structural shapes of the supporting legs5can also be considered according to specific conditions.

Preferably, the top of the discharge box15is provided with a check valve25. Such a structural design can control the flow of discharge. In practice, other structural shapes of the check valve25can also be considered according to the specific situation.

Preferably, the outer ides of a first motor8and a second motor22are sleeved with protective sleeves. In practice, other protective structure shapes of a first motor8and a second motor22can also be considered according to specific conditions.

Preferably, stiffeners26are welded at the joint of the T-shaped push plate17and the slide plates18on both sides. This structural design enhances the connection effect between the T-shaped push plate17and the slide plates18on both sides. In practice, other connecting structure shapes of the T-shaped push plate17and the slide plates18on both sides can also be considered according to specific conditions.

Preferably, the upper and lower sides of the chute are provided with guide grooves, guide rods27are installed in the guide grooves, the guide rods27are connected with guide blocks28in a sliding way, and the guide blocks28are fixedly installed on the slide plates18. This structural design makes the sliding plate18more stable when moving. In practice, other guiding and sliding structure shapes of the dispersing box1and the slide plate18can also be considered according to specific conditions.

Preferably, folding baffles29are connected between the slide plates18on both sides. This structural design is convenient to shield the adjusting groove21. In practice, other structural shapes of the folding baffle29can also be considered according to specific conditions.

Preferably, a plurality of dispersing gears14are distributed on the surface of the roller13at equal intervals. In practice, other arrangement and installation structure shapes of the dispersing gears14can also be considered according to specific conditions.

Preferably, a plurality of dispersing gears14are distributed on the surface of the roller13at equal intervals. This structural design makes the dispersion effect better. In practice, other arrangement and installation structure shapes of the dispersing gears14can also be considered according to specific conditions.

Preferably, the dispersing gears14are arranged in a conical structure. In practice, other structural shapes of the dispersing gears14can also be considered according to specific conditions.

A fiber dispersion-improving method based on the fiber pre-dispersing device for fiber reinforced concrete includes the following steps:

S1, putting fiber raw materials to be dispersed into a hopper2, wherein the materials enter the dispersing chamber I through the hopper2;

S2, starting a first dispersing device3, wherein dispersing blocks10and dispersing gears14matched with rollers13preliminarily disperse and stir the fiber raw materials described in Si in the dispersing device3; the degree of dispersing fiber raw materials can be adjusted by controlling the rotation speed of a first motor8;

S3, opening the check valve25to make the pre-dispersed fiber materials fall into a second dispersing device4after the fibers are pre-dispersed in S2, meanwhile, wherein a first dispersing device3keeps rotating, which can effectively prevent the entrance from being blocked; and

S4, starting a second dispersing device4to disperse the pre--dispersed fiber raw materials again, wherein oil cylinders16on both sides can push the respective grinding cylinders23for adjustment, in order to control the fineness of fiber raw material dispersion, achieving an unproved dispersion effect.

In this embodiment, the fiber raw materials to be dispersed are put into hopper2and a first motor8is started, so that a first motor8drives the main shaft6to rotate, and the main shaft6drives the dispersing rod9and the connecting frame11to rotate, and the dispersing rod9drives the dispersing block10to disperse the fiber raw materials, while the connecting frame11drives the connecting rod12and drives the roller13, the roller13drives the dispersing gear14to disperse the fiber raw materials, and the effect of pre-dispersing the fiber raw materials is realized. After pre-dispersing by a first dispersing device3, the fiber raw materials enter a second dispersing device4, next, starting a second motor22on both sides, a second motor22on both sides drives the rotating rod20, which drives the grinding cylinder23, which drives the grinding gear24to disperse the dropped fiber raw materials, controlling the oil cylinders16on both sides to push the T-shaped push plate17, and the T-shaped push plate17moves outwards and drives the slide plates18on both sides, so that the slide plates18drive the rotating rod20to slide along the adjusting groove21, and the adjustment of the distance between the two grinding cylinders23is realized, thus controlling the dispersion effect of fiber raw materials, and dispersing fiber raw materials according to different requirements.

The above examples only illustrate the principle and efficacy of the present invention and are not intended to limit the present invention. Anyone skilled in the art can modify or adjust the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.