A roll crusher

Abstract

The application discloses a roller crusher and belongs to the technical field of crushers. The roller crusher comprises a rack, roller cylinders, a driving mechanism and a poking block, and the length direction of the poking block is parallel to the axial direction of the roller cylinders. A poking mechanism is connected to the rack, and the poking mechanism is used for driving the poking block to move towards the direction of being retracted into a containing cavity when the poking block rotates to a fixed position. In the application, the roller cylinders generate downward pressure on the materials falling between the two roller cylinders during rotation by the poking block, so that the materials can be grabbed by the roller cylinders. In addition, the poking mechanism starts to drive the poking block to move towards the direction of being retracted into the containing cavity when the poking block rotates to the fixed position, so that the poking blocks on the two roller cylinders can be retracted into the containing cavity when they are close to each other, thereby avoiding interference. In this way, the gap between the two roller cylinders can be reduced as much as possible, so as to adapt to the crushing of materials with smaller volumes.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of crushers, and particularly relates to a roller crusher. BACKGROUND

[0002] The working principle of the roller crusher is to crush materials by two rollers rotating in opposite directions. The materials fall into the gap between the two rollers through the feeding port on the upper part of the device, are gradually crushed by friction, and the finished materials leak out from the lower part.

[0003] The existing roller crusher mainly extrudes and crushes materials by two rollers. When crushing materials, the materials are extruded between the two rollers by relying on their own gravity and the friction between the materials and the roller surface. However, since the friction coefficient of the roller surface is usually small, part of the materials may not be smoothly brought into the gap between the two rollers, so that part of the materials remain above the gap between the two rollers and cannot be extruded and crushed by the two rollers, thereby reducing the crushing efficiency of the materials. Although some rollers have textures or teeth on the surface to grab the materials so that the materials can be pressed into the gap between the two rollers, the textures and teeth have a certain size, which requires the gap between the two rollers to be greater than the minimum distance between the textures and teeth on the two rollers to prevent interference between the textures and teeth on the two rollers. Therefore, the size of the materials that can be crushed by the rollers must be within a certain range, which makes it impossible to crush materials with a small size. SUMMARY

[0004] The present application aims to overcome the above-mentioned shortcomings of the prior art and provide a roller crusher.

[0005] The technical solution adopted to solve the above-mentioned technical problems is as follows: a roller crusher, comprising a frame of the roller crusher, two rollers rotatably connected to the frame by a driving roller, the two rollers being driven by a driving mechanism to rotate in opposite directions synchronously, and further comprising:

[0006] a stirring block fitted into a plurality of accommodating cavities formed in the periphery of the roller, the stirring block freely sliding in the accommodating cavities along the radial direction of the roller, the length direction of the stirring block being parallel to the axial direction of the roller;

[0007] a stirring mechanism connected to the frame, the stirring mechanism being configured to drive the stirring block to move towards the accommodating cavities when the stirring block rotates to a fixed position.

[0008] Through the technical scheme, the roller can generate downward pressure on the material falling between the two rollers during rotation by the poking block, so that the material can be grabbed by the roller. In addition, the poking mechanism will start to drive the poking block to move towards the inside of the accommodation cavity when the poking block rotates to the fixed position, so that the poking blocks on the two rollers can be retracted into the accommodation cavity when they approach each other, thereby avoiding interference. In this way, the gap between the two rollers can be minimized to adapt to smaller materials for crushing.

[0009] Further, the driving mechanism comprises a speed reducer box mounted on the rack, the output end of the speed reducer box is drivingly connected with one of the driving rollers, gears are fixedly sleeved on the two driving rollers respectively, the two gears are externally meshed, a motor is mounted on the input end of the speed reducer box, and the output shaft of the motor is drivingly connected with the input end of the speed reducer box.

[0010] Through the technical scheme, the output shaft of the motor rotates, thereby driving the output end of the speed reducer box to rotate, so that the driving roller can be driven to rotate. Through the meshing of the two gears, the two rollers can be synchronously and reversely rotated.

[0011] Further, the poking mechanism comprises four fixed flange seats connected to the rack, the four fixed flange seats correspond to the axial two ends of the two rollers respectively, sliding pins are fixedly connected to the two ends of the poking block in the length direction respectively, a waist-shaped hole is formed in the end face of the roller for the sliding pins to pass freely, a special-shaped sliding groove is formed in the side end face of the fixed flange seat facing the roller, the special-shaped sliding groove comprises large-arc-shaped grooves and small-arc-shaped grooves connected in sequence, the inner wall of the small-arc-shaped groove extends towards the radial inner side of the fixed flange seat, and the end of the sliding pin penetrating out of the waist-shaped hole is inserted into the special-shaped sliding groove and freely slides in the special-shaped sliding groove.

[0012] Through the technical scheme, when the sliding pin slides in the large-arc-shaped groove of the special-shaped sliding groove, the sliding pin will drive the poking block to move towards the radial outer side of the roller, so that the poking block penetrates out of the roller. When the poking blocks on the two rollers approach each other, the sliding pin will slide from the large-arc-shaped groove into the small-arc-shaped groove, thereby driving the poking block to move towards the inside of the accommodation cavity until the outer wall of the poking block abuts against the inner wall of the accommodation cavity, thereby avoiding the interference phenomenon of the poking blocks on the two rollers when they approach each other.

[0013] Further, a plurality of sawtooth portions are formed in the side outer wall of the poking block.

[0014] Through the technical scheme, when the material pushing block slides towards the inside of the accommodating cavity, the sawtooth part will be in contact with the material surface and generate a force on the material surface, so that the material can be turned over to avoid multiple materials from being accumulated together, and the sawtooth part also has a downward extrusion force on the material surface, so that the sawtooth part can generate a cutting force on the plastic material, so that the plastic material surface is cut to form a groove, so that when the plastic material is extruded by the two rollers, the plastic material can be quickly broken at the groove.

[0015] Further, one side of the material pushing block towards the outer side of the periphery of the roller is arc-shaped, so that after the material pushing block is retracted into the accommodating cavity, the arc surface of the material pushing block matches the periphery of the roller.

[0016] Through the technical scheme, when the material pushing block is retracted into the accommodating cavity, the arc surface of the material pushing block is flush with the periphery of the roller, that is, the arc surface of the material pushing block and the periphery of the roller are located on the same circle, so that when the two rollers extrude and crush the material, the area of the material in contact with the roller is larger than the area of the material in contact with the arc surface of the material pushing block, so that the extrusion force transmitted from the material to the material pushing block is smaller, that is, the material is mainly extruded and crushed by the roller.

[0017] Further, a screening part is arranged on the rack, the screening part is arranged below the roller, and the two sides of the screening part are arc-shaped, the two rollers are respectively located in the two arc-shaped parts of the screening part, and a plurality of screen holes are arranged on the surface of the screening part.

[0018] Through the technical scheme, the screen holes on the screening part can screen out the crushed materials meeting the requirements, so as to facilitate subsequent processing.

[0019] Further, a plurality of vibrators are arranged on the outer wall of the screening part.

[0020] Through the technical scheme, the vibrators generate a vibration force on the screening part, and under the action of the vibration force, the crushed materials can quickly pass through the screen holes.

[0021] Further, a material pushing cavity is surrounded by the outer wall of the side of the material pushing block penetrating out of the roller and the inner wall of the arc-shaped part of the screening part, a partition plate is fixedly connected to each end of the screening part, and a through groove for allowing the roller to freely pass through is arranged on the outer wall of the partition plate.

[0022] Through the technical scheme, the material pushing block and the inner wall of the screening part surround the material pushing cavity, so that the materials which are still relatively large in size after being crushed by the roller can enter the material pushing cavity, and along with the rotation of the roller, the material pushing block can drive the materials which are relatively large in size in the material pushing cavity to the upper side of the periphery of the roller, so that the materials can be re-extruded and crushed by the two rollers until the materials can pass through the screen holes.

[0023] Further, the rack is fixed with a feeding bin, the inner wall of the two sides of the feeding bin is fixed with an inclined plate, the opposite ends of the two inclined plates are fixed with downward extending baffles, the outer wall of the baffle is integrally formed with an arc plate, an installation cavity is surrounded between the two arc plates, the opposite ends of the two inclined plates surround an inlet, the inlet is communicated with the installation cavity, a quantitative material roller is horizontally rotatably connected to the outer wall of the feeding bin through a rotating shaft, the quantitative material roller is coaxially clamped in the installation cavity, a quantitative storage groove in the form of a notch is formed in the periphery of the quantitative material roller, a sliding cavity is formed in the quantitative material roller, two sector blocks are clamped in the sliding cavity, the sector blocks are freely slidable in the sliding cavity around the circumference of the quantitative material roller, the sliding cavity is communicated with the quantitative storage groove, and the screening part is provided with an adjusting assembly for driving the relative movement of the two sector blocks, and the adjusting assembly is used to adjust the internal volume of the quantitative storage groove.

[0024] Through the above technical scheme, the material in the feeding bin can fall into the quantitative storage groove through the reciprocating rotation of the rotating shaft, then the mouth of the quantitative storage groove is rotated downward with the rotation of the rotating shaft, and then the material can fall between the two rollers under the action of gravity, realizing quantitative feeding of the material and avoiding the phenomenon of uneven crushing caused by the accumulation of the material between the two rollers. In addition, by setting the two sector blocks to synchronously slide reversely in the sliding cavity, the internal volume of the quantitative storage groove can be adjusted, so that when there is more unbroken material in the stirring cavity, the internal volume of the quantitative storage groove is reduced, so that the amount of material conveyed from the feeding bin to between the two rollers can be reduced, preventing the accumulation of material between the two rollers after mixing with unbroken material, and then causing the phenomenon of uneven crushing.

[0025] Further, the adjusting assembly comprises a plurality of sensors mounted on the outer wall of the screening part, the two ends of the quantitative material roller are jointly provided with electromagnets, the sliding cavity is divided into two cavities by the electromagnets, and a spring is mounted in each of the two cavities.

[0026] Through the above technical scheme, when the unbroken material in the stirring cavity is collected by the sensors, the electromagnets are controlled to be powered off by the external control cabinet when multiple sensors simultaneously generate signals, so that the two sector blocks move towards the outside of the mouth of the sliding cavity, and then the internal volume of the quantitative storage groove is reduced.

[0027] The beneficial effects of the present application are as follows:

[0028] (1) In the application, the roller produces downward pressure on the material falling between the two rollers during rotation, so that the material can be grabbed by the roller, and the poking mechanism starts to drive the poking block to move towards the inside of the containing cavity when the poking block rotates to the fixed position, so that the poking blocks on the two rollers can retract into the containing cavity when they approach each other, thereby avoiding interference, so that the gap between the two rollers can be minimized to accommodate smaller volumes of material for crushing;

[0029] (2) In the application, the sawtooth portion contacts the material surface and exerts a force on the material surface when the poking block slides towards the inside of the containing cavity, so that the material can be turned over to prevent multiple materials from piling up, and the sawtooth portion also has a downward extrusion force on the material surface, so that the sawtooth portion can generate a cutting force on the plastic material, causing the plastic material surface to be cut into grooves, so that the plastic material can quickly crack at the grooves when it is extruded by the two rollers;

[0030] (3) In the application, the rotation of the shaft allows the material in the feeding bin to fall into the quantitative storage tank, and then the rotation of the shaft allows the mouth of the quantitative storage tank to rotate downward, so that the material can fall between the two rollers under the action of gravity, achieving quantitative feeding of the material and avoiding uneven crushing of the material due to accumulation between the two rollers. In addition, by setting two fan-shaped blocks to slide synchronously and reversely in the sliding cavity, the internal volume of the quantitative storage tank can be adjusted, so that when there is more unbroken material in the poking cavity, the internal volume of the quantitative storage tank is reduced, so that the amount of material transported from the feeding bin to the two rollers can be reduced, preventing the accumulation of material between the two rollers after mixing with unbroken material, thereby causing uneven crushing. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of a roller crusher in the application;

[0032] Figure 2 is Figure 1 a schematic diagram of the structure from another perspective in the application;

[0033] Figure 3 is Figure 1 a schematic diagram of the position relationship after omitting the frame, motor and reduction box in the application;

[0034] Figure 4 is Figure 3 a schematic diagram of the structure from another perspective in the application;

[0035] Figure 5 is Figure 4A schematic diagram showing the positional relationship of the middle section after it has been cut open;

[0036] Figure 6 This is a schematic diagram showing the positional relationship of the roller, the feeding block, and the fixed flange seat after assembly in this invention;

[0037] Figure 7 yes Figure 6 Schematic diagram of the explosive decomposition of the medium structure;

[0038] Figure 8 This is a schematic diagram showing the positional relationship between the quantitative feed roller and the arc block after assembly in this invention;

[0039] Figure 9 yes Figure 8 A schematic diagram showing the positional relationship of the middle section after it has been cut open;

[0040] Figure 10 yes Figure 8 Schematic diagram of the explosive decomposition of the medium structure;

[0041] Figure 11 This is a schematic diagram showing the positional relationship between the screening section and the partition after assembly in this invention.

[0042] Reference numerals: 1. Motor; 2. Gearbox; 3. Frame; 4. Feed bin; 5. Screening section; 6. Screen hole; 7. Drive roller; 8. Gear; 9. Inclined plate; 10. Feed inlet; 11. Partition plate; 12. Vibrator; 13. Fixed flange seat; 14. Sensor; 15. Baffle; 16. Feeding chamber; 17. Sliding chamber; 18. Roller; 19. Arc plate; 20. Feeding block; 21. Serrated section; 22. Waist-shaped hole; 23. Receiving cavity; 24. Small arc groove; 25. Large arc groove; 26. Sliding pin; 27. Rotating shaft; 28. Fan-shaped block; 29. ​​Quantitative storage tank; 30. Electromagnet; 31. Quantitative roller; 32. Spring. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] like Figures 1-11 As shown, this embodiment provides a roller crusher, including a frame 3 of the roller crusher. Two rollers 18 are rotatably connected to the frame 3 by a drive roller 7. A reduction gearbox 2 is installed on the frame 3. The output end of the reduction gearbox 2 is driven and connected to one of the drive rollers 7. Gears 8 are fixedly sleeved on each of the two drive rollers 7. The two gears 8 are externally meshed. A motor 1 is installed at the input end of the reduction gearbox 2. The output shaft of the motor 1 is driven and connected to the input end of the reduction gearbox 2.

[0045] The periphery of the roller 18 is provided with a plurality of accommodating cavities 23 in the axial direction, the length direction of the accommodating cavities 23 is parallel to the axial direction of the roller 18, and each of the accommodating cavities 23 is clamped with a poking block 20, the poking block 20 is freely slid in the radial direction of the roller 18 in the accommodating cavity 23, the length direction of the poking block 20 is parallel to the axial direction of the roller 18, the outer wall of the frame 3 is connected with four fixed flange seats 13 through screws, the four fixed flange seats 13 correspond to the axial two ends of the two rollers 18 respectively, the two ends of the length direction of the poking block 20 are fixedly connected with sliding pins 26, the end face of the roller 18 is provided with a waist-shaped hole 22 for the sliding pins 26 to freely pass through, the side end face of the fixed flange seat 13 facing the roller 18 is provided with a special-shaped sliding groove, the special-shaped sliding groove includes large-arc-shaped grooves 25 and small-arc-shaped grooves 24 connected in sequence, the inner wall of the small-arc-shaped groove 24 extends to the radial inner side of the fixed flange seat 13, the end of the sliding pin 26 penetrating out of the waist-shaped hole 22 is inserted into the special-shaped sliding groove and freely slides in the special-shaped sliding groove, in addition, the outer wall of one side of the poking block 20 is provided with a plurality of sawtooth parts 21, the length direction of the sawtooth part 21 is consistent with the length direction of the poking block 20, the side of the poking block 20 facing the outer side of the periphery of the roller 18 is arc-shaped, so that the arc surface of the poking block 20 matches the periphery of the roller 18 after the poking block 20 is retracted into the accommodating cavity 23, that is, the transition is smooth, in addition, the material and heat treatment method of the poking block 20 in the embodiment are consistent with the material and heat treatment method of the roller 18, so as to ensure that the surface of the poking block 20 has sufficient hardness;

[0046] The frame 3 is provided with a screening part 5, the outer walls on both sides of the screening part 5 are connected to the frame 3 through screws, or can also be connected through welding, the screening part 5 is located below the roller 18 and the two sides of the screening part 5 are arc-shaped, the two rollers 18 are located in the two arc-shaped parts of the screening part 5 respectively, a plurality of screen holes 6 are formed in the surface of the screening part 5, at least one vibrator 12 is installed on the outer wall of the screening part 5, the vibrator 12 is electrically connected to an external control cabinet through a cable, the poking cavity 16 is surrounded between the outer wall of one side of the roller 18 and the inner wall of the arc-shaped part of the screening part 5, the two ends of the screening part 5 are fixedly connected with baffles 11, the baffles 11 are used to block the two sides of the roller 18, so as to close the two sides of the poking cavity 16 corresponding to the axial direction of the roller 18, and the outer wall of the baffle 11 is provided with a through slot for the roller 18 to freely pass through;

[0047] The rack 3 is welded with a feeding bin 4, the feeding bin 4 is in the form of a narrow top-down, the two side walls of the feeding bin 4 are fixedly connected with inclined plates 9, the opposite ends of the two inclined plates 9 are fixedly connected with downwardly extending baffles 15, the outer wall of the baffle 15 is integrally formed with an arc-shaped plate 19, the two arc-shaped plates 19 form an installation cavity, the opposite ends of the two inclined plates 9 form a feeding port 10, the feeding port 10 is in communication with the installation cavity, a rotating shaft 27 is horizontally installed on the outer wall of the feeding bin 4, one end of the rotating shaft 27 is connected with an external small motor, the small motor is electrically connected with a control cabinet through a cable, when the output shaft of the small motor rotates, the rotating shaft 27 will be synchronously driven to rotate, in addition, a quantitative material roller 31 is fixedly sleeved on the part of the rotating shaft 27 penetrating into the feeding bin 4, so that the quantitative material roller 31 is horizontally rotatably connected to the feeding bin 4, the quantitative material roller 31 is coaxially clamped in the installation cavity, the quantitative material roller 31 is provided with a quantitative storage groove 29 in the form of a notch on the periphery, the quantitative material roller 31 is provided with an annular sliding cavity 17, two sector blocks 28 are clamped in the sliding cavity 17, the sector blocks 28 are freely slidable around the periphery of the quantitative material roller 31 in the sliding cavity 17, the sliding cavity 17 is in communication with the quantitative storage groove 29, a plurality of sensors 14 are installed on the outer wall of the screening part 5, the sensors 14 are used to detect whether there is material in the material stirring cavity 16, and the power-on and power-off of the sensors 14 is matched with the rotation rate of the roller 18, that is, each time the sensor 14 is powered on, it can correspond to the material stirring cavity 16, thereby avoiding the interference of the stirring block 20 on the sensor 14 signal, the two ends of the quantitative material roller 31 are provided with electromagnets 30, the sliding cavity 17 is separated into two cavities by the electromagnets 30, and each cavity is provided with a spring 32, the two ends of each spring 32 in the elastic direction are fixedly connected to the surface of the sector block 28 and the electromagnet 30 respectively, the sector block 28 is made of a magnetically conductive material (such as any one of iron, cobalt and nickel), so that when the electromagnet 30 is powered on, the magnetism generated by the electromagnet 30 will generate a magnetic attraction force on the sector block 28, thereby driving the sector block 28 to slide in the sliding cavity 17 towards the electromagnet 30, and at this time the spring 32 is compressed by the sector block 28 to accumulate elastic potential energy, and when the electromagnet 30 is powered off, the magnetism of the electromagnet 30 disappears, the elastic potential energy accumulated by the spring 32 is released, thereby driving the sector block 28 to move towards the outside of the mouth of the sliding cavity 17 (or the direction of the quantitative storage groove 29), thereby reducing the internal volume of the quantitative storage groove 29.

[0048] The working principle of the embodiment is as follows:

[0049] The material is put into the feeding bin 4, the motor 1 is started, the motor 1 drives the reduction box 2 to act, so that the reduction box 2 drives the driving roller 7 to rotate, and through the rotation of the two gears 8, the two roller cylinders 18 are synchronously and reversely rotated, after the material enters the feeding bin 4, under the action of gravity, it enters the quantitative material roller 31 in the quantitative storage groove 29 from the inlet 10, the control cabinet controls the small motor to start, the output shaft of the small motor rotates and drives the rotating shaft 27 to rotate, so that the quantitative material roller 31 can rotate, so that the mouth of the quantitative storage groove 29 can rotate downward, and then the small motor is controlled by the control cabinet to rotate reversely, until the mouth of the quantitative storage groove 29 rotates to the upward state again, in this process, the electromagnet 30 is in the energized state, and then the magnetic attraction force is generated on the two sector blocks 28, so that the sector blocks 28 overcome the elastic force of the springs 32, and then slide to the inside of the sliding cavity 17, until the surface of the sector blocks 28 is flush with the inner wall of the quantitative storage groove 29, and at this time the spring 32 is in the state of compression and accumulation of elastic potential;

[0050] The material on the roller cylinder 18 will generate pressure on the material, so that the material can be bitten by the two roller cylinders 18, and then crushed, as the material is gradually extruded by the roller cylinder 18, the sliding pin 26 on the material pushing block 20 extruding the material will slide from the large arc-shaped groove 25 of the fixed flange seat 13 to the small arc-shaped groove 24, so that the material pushing block 20 moves to the direction of retracting into the containing cavity 23, until the one end of the material pushing block 20 in the width direction abuts against the inner wall of the containing cavity 23, and at this time the arc surface of the material pushing block 20 is flush with the circumference of the roller cylinder 18 and presents smooth transition;

[0051] After the material is extruded and crushed by the two roller cylinders 18, it will fall on the surface of the screening part 5, the material meeting the requirements will fall from the screen hole 6 of the screening part 5, and will be collected by the worker, while the material with larger volume will enter the material pushing cavity 16 and be driven by the material pushing block 20 to slide on the inner wall of the arc-shaped part of the screening part 5, until it falls between the two roller cylinders 18 again and is crushed again by the roller cylinder 18;

[0052] When the amount of unbroken material in the stirring cavity 16 is large, the plurality of sensors 14 will generate sensing signals and feed back to the external control cabinet, the control cabinet controls the power supply of the electromagnet 30 to be disconnected, at this time the magnetism of the electromagnet 30 disappears, the elastic potential energy accumulated by the spring 32 will be released, and then drive the sector block 28 to move towards the outside of the mouth of the sliding cavity 17 (or the direction of the quantitative storage tank 29), thereby reducing the internal volume of the quantitative storage tank 29 (note that the quantitative storage tank 29 is not closed by the sector block 28), so that the amount of material entering the quantitative storage tank 29 is reduced during the next feeding, thereby reducing the amount of material falling between the two rollers 18, when the external control cabinet disconnects the power supply of the sensor 14, the power supply of the electromagnet 30 will be turned on again, so that the electromagnet 30 generates magnetism, and the sector block 28 moves towards the inside of the sliding cavity 17, thereby restoring the internal volume of the quantitative storage tank 29, that is, the power supply of the sensor 14 is controlled by the control cabinet to be turned on and off, as long as the sensor 14 generates a signal each time the power supply is turned on, the power supply of the electromagnet 30 will be disconnected by the control cabinet, so as to ensure that the total amount of material entering the two rollers 18 (the sum of the material falling between the rollers 18 from the quantitative storage tank 29 and the unbroken material) will not differ too much during each feeding, in addition, as known by those skilled in the art, the proportion of unbroken material during each crushing process will not be too large.

[0053] The above is only a preferred embodiment of the present application, and is not intended to limit the protection scope of the present application.

Claims

1. A roll crusher comprising a frame (3) of the roll crusher, on which two roll cylinders (18) are rotatably connected by mounting a drive roll (7), the two roll cylinders (18) being driven by a drive mechanism for their synchronous counter-rotation, characterized in that, Also include: The stirring block (20) is engaged in the plurality of accommodating cavities (23) opened in the periphery of the roller (18), the stirring block (20) is freely slid in the accommodating cavity (23) along the radial direction of the roller (18), the length direction of the stirring block (20) is parallel to the axial direction of the roller (18); The stirring mechanism connected to the rack (3) is used to drive the stirring block (20) to move towards the direction of retracting into the accommodating cavity (23) when the stirring block (20) rotates to the fixed position; The stirring mechanism includes four fixed flange seats (13) connected to the rack (3), the two axial ends of the two rollers (18) correspondingly, the two ends of the length direction of the stirring block (20) are respectively fixedly connected with the sliding pin (26), the end surface of the roller (18) is provided with a waist-shaped hole (22) for the sliding pin (26) to freely pass through, the side end surface of the fixed flange seat (13) towards the roller (18) is provided with a special-shaped sliding groove, the special-shaped sliding groove includes large arc-shaped grooves (25) and small arc-shaped grooves (24) connected in sequence, the inner wall of the small arc-shaped groove (24) extends towards the radial inner side of the fixed flange seat (13), one end of the sliding pin (26) inserted into the special-shaped sliding groove and freely slides in the special-shaped sliding groove; The rack (3) is provided with a screening part (5), the screening part (5) is arranged below the roller (18) and the two sides of the screening part (5) are arc-shaped, and the two rollers (18) are respectively located in the two arc-shaped parts of the screening part (5); The rack (3) is fixedly connected with a feeding bin (4), the outer wall of the feeding bin (4) is horizontally rotatably connected with a quantitative material roller (31) through a rotating shaft (27), the periphery of the quantitative material roller (31) is provided with a quantitative storage groove (29) in the form of a notch, the quantitative material roller (31) is provided with an annular sliding cavity (17) inside, the sliding cavity (17) is engaged with two sector blocks (28), the sector blocks (28) freely slide around the circumferential direction of the quantitative material roller (31) in the sliding cavity (17), the sliding cavity (17) is communicated with the quantitative storage groove (29), and the screening part (5) is provided with an adjusting assembly for driving the two sector blocks (28) to move relatively, and the adjusting assembly is used to adjust the internal volume of the quantitative storage groove (29).

2. The roll crusher according to claim 1, characterized in that, The driving mechanism includes a speed reducer (2) mounted on the rack (3), the output end of the speed reducer (2) is drivingly connected with one of the driving rollers (7), the two driving rollers (7) are respectively fixedly sleeved with gears (8), the two gears (8) are externally meshed, and the input end of the speed reducer (2) is mounted with a motor (1), and the output shaft of the motor (1) is drivingly connected with the input end of the speed reducer (2).

3. The roll crusher according to claim 1, characterized in that, A plurality of sawtooth parts (21) are arranged on one side of the outer wall of the stirring block (20).

4. The roll crusher according to claim 1, characterized by The one side of the poking block (20) outward the periphery of the roller (18) is arc, so that the arc of the poking block (20) matches the periphery of the roller (18) after the poking block (20) is retracted into the accommodating cavity (23).

5. The roll crusher according to claim 1, characterized in that, The screening part (5) is provided with a plurality of screen holes (6) on the surface.

6. The roll crusher according to claim 5, characterized in that, A plurality of vibrators (12) are installed on the outer wall of the screening part (5).

7. The roll crusher according to claim 5, characterized in that, The poking cavity (16) is surrounded by the outer wall of the side of the roller (18) and the inner wall of the arc-shaped part of the screening part (5), and the screening part (5) is fixedly connected with a baffle (11) at both ends.

8. The roll crusher according to claim 7, characterized in that The inner wall of both sides of the feeding bin (4) is fixedly connected with an inclined plate (9), the opposite ends of the two inclined plates (9) are fixedly connected with a downwardly extending baffle (15), the outer wall of the baffle (15) is integrally formed with an arc-shaped plate (19), the two arc-shaped plates (19) surround an installation cavity, the opposite ends of the two inclined plates (9) surround a feeding port (10), the feeding port (10) is in communication with the installation cavity, and the quantitative material roller (31) is coaxially clamped in the installation cavity.

9. The roll crusher according to claim 8, characterized in that, The adjusting assembly comprises a plurality of sensors (14) installed on the outer wall of the screening part (5), the two end portions of the quantitative material roller (31) are commonly provided with an electromagnet (30), the sliding cavity (17) is separated into two cavities by the electromagnet (30), and a spring (32) is installed in each cavity; and the two ends of each spring (32) in the elastic direction are fixedly connected to the surface of the electromagnet (30) and the sector-shaped block (28), respectively.

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