Roller crusher

Abstract

The invention discloses a roller crusher, which belongs to the technical field of crushers and comprises a frame, a roller, a driving mechanism and a shifting block, and the length direction of the shifting block is parallel to the axial direction of the roller; the shifting mechanism is connected to the rack and used for driving the shifting block to move in the direction of retracting into the containing cavity when the shifting block rotates to the fixed position. In the rotating process of the rollers, downward pressure is generated by the material shifting block on materials falling between the two rollers, so that the materials can be grabbed by the rollers, in addition, when the material shifting block rotates to a fixed position, the shifting mechanism starts to drive the material shifting block to move in the direction of retracting into the inner side of the containing cavity, and therefore the materials can be grabbed by the rollers. The two rollers are arranged in the containing cavity, so that the material shifting blocks on the two rollers can retract into the containing cavity when approaching each other, interference is avoided, and the gap between the two rollers can be reduced as much as possible so as to adapt to crushing of materials with small sizes.

Description

Technical Field

[0001] The invention belongs to the technical field of crushers, and in particular relates to a roller crusher. Background Art

[0002] The working principle of the roller crusher is to use two rollers rotating in opposite directions to crush the material. The material falls between the two rollers through the feeding port on the upper part of the equipment, and is brought into the gap between the two rollers by friction, and is gradually crushed, and the finished material leaks out from the bottom.

[0003] The existing roller crusher mainly uses two rollers to squeeze and crush the materials. When crushing the materials, the materials are squeezed between the two rollers by relying on their own gravity and the friction between the materials and the roller surfaces. However, since the friction coefficient of the roller surface is usually small, some materials may not be smoothly brought between the two rollers by the rollers, so that some materials remain above the two rollers and cannot be squeezed and crushed by the two rollers, resulting in low material crushing efficiency. Although some roller surfaces are currently provided with textures or tooth blocks to grab the materials so that the materials can be pressed between the two rollers, in this structure, the textures and tooth blocks have a certain size, which means that the gap between the two rollers must be greater than the minimum spacing between the textures and tooth blocks on the two rollers, so as to prevent the textures and tooth blocks on the two rollers from interfering with each other. Therefore, the volume of the materials that can be crushed by the rollers needs to be within a certain range, which makes it impossible to crush smaller materials. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a roller crusher.

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

[0006] A material shifting block engaged in a plurality of accommodating cavities provided on the periphery of the roller, wherein the material shifting block freely slides in the accommodating cavity along the radial direction of the roller, and the length direction of the material shifting block is parallel to the axial direction of the roller;

[0007] A toggle mechanism connected to the frame is used to drive the material-digging block to move in a direction of being retracted into the accommodating cavity when the material-digging block rotates to a fixed position.

[0008] Through the above technical solution, during the rotation of the rollers, the material dropping block will generate downward pressure on the material falling between the two rollers, so that the material can be grabbed by the rollers. In addition, when the material dropping block rotates to a fixed position, the shifting mechanism starts to drive the material dropping block to move in the direction of retracting into the inner side of the accommodating cavity, so that the material dropping blocks on the two rollers can be retracted into the accommodating cavity when they approach each other, thereby avoiding interference. In this way, the gap between the two rollers can be minimized to adapt to the crushing of smaller volumes of materials.

[0009] Furthermore, the driving mechanism includes a reduction gear box mounted on the frame, the output end of the reduction gear box is drivingly connected to one of the driving rollers, each of the two driving rollers is fixedly sleeved with a gear, the two gears are externally meshed, and the input end of the reduction gear box is mounted with a motor, and the output shaft of the motor is drivingly connected to the input end of the reduction gear box.

[0010] Through the above technical solution, the output shaft of the motor rotates, which in turn drives the output end of the reduction box to rotate, so that the drive roller can be driven to rotate, and then through the engagement of the two gears, the two rollers can rotate synchronously in opposite directions.

[0011] Furthermore, the toggle mechanism includes four fixed flange seats connected to the frame, the four fixed flange seats respectively corresponding to the axial ends of the two rollers, and sliding pins are fixed to the two ends of the length direction of the material shifting block, and a waist-shaped hole is provided on the end face of the roller for the sliding pin to pass freely, and a special-shaped slide groove is provided on the end face of the fixed flange seat facing the roller, and the special-shaped slide groove includes a large arc groove and a small arc groove connected in sequence end to end, and the inner wall of the small arc groove extends toward the radial inner side of the fixed flange seat, and one end of the sliding pin passing through the waist-shaped hole is inserted into the special-shaped slide groove and can slide freely in the special-shaped slide groove.

[0012] Through the above technical scheme, when the sliding pin slides in the large arc groove of the special-shaped slide groove, the sliding pin will drive the material stripping block to move toward the radial outer side of the roller, so that the material stripping block passes through the roller, and when the material stripping blocks on the two rollers approach each other, the sliding pin will slide from the large arc groove to the small arc groove, and then drive the material stripping block to move toward the inner side of the accommodating cavity until the outer wall of the material stripping block abuts against the inner wall of the accommodating cavity, thereby avoiding the phenomenon that the material stripping blocks on the two rollers interfere with each other when they approach each other.

[0013] Furthermore, a plurality of serrations are provided on an outer wall of one side of the material shifting block.

[0014] Through the above technical solution, when the material-shifting block slides toward the inner side of the accommodating cavity, the serrated portion will contact the surface of the material and exert force on the surface of the material, so that the material can be turned over to avoid multiple materials from piling up together. In addition, the serrated portion also has a downward squeezing force on the surface of the material, so that the serrated portion can produce a cutting force on the plastic material, so that grooves are cut on the surface of the plastic material, so that when the plastic material is squeezed by the two rollers, the plastic material can be quickly cracked from the groove.

[0015] Furthermore, a surface of the material shifting block facing the outer side of the periphery of the roller is in an arc surface, so that after the material shifting block is retracted into the accommodating cavity, the arc surface of the material shifting block matches the periphery of the roller.

[0016] Through the above technical solution, when the material-shifting block is retracted into the accommodating chamber, the arc surface of the material-shifting block and the periphery of the roller are in a flush and smooth transition state, that is, the arc surface of the material-shifting 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 contact area between the material and the roller is larger than the contact area between the material and the arc surface of the material-shifting block, so that the extrusion force transmitted from the material to the material-shifting block is smaller, that is, the material is mainly extruded and crushed by the rollers.

[0017] Furthermore, a screening part is provided on the frame, the screening part is arranged below the roller and has arc-shaped two sides, the two rollers are respectively located in two arc-shaped parts of the screening part, and a plurality of sieve holes are opened on the surface of the screening part.

[0018] Through the above technical solution, the sieve holes on the screening part can screen out the materials that meet the requirements after crushing for subsequent processing.

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

[0020] Through the above technical solution, the vibrator generates a vibration force on the screening part, and under the action of the vibration force, the crushed material can quickly pass through the sieve holes.

[0021] Furthermore, the material-shifting block passes through an outer wall of one side of the roller and forms a material-shifting cavity with the inner wall of the arc-shaped portion of the screening part. Partitions are fixedly connected at both ends of the screening part, and a through groove is formed on the outer wall of the partition for the roller to pass freely.

[0022] Through the above technical solution, the material-dividing block and the inner wall of the screening part form a material-dividing cavity, so that the material with a larger volume after being crushed by the roller can enter the material-dividing cavity, and as the roller rotates, the material-dividing block can drive the larger material in the material-dividing cavity to the upper side of the periphery of the roller, so that the material can be squeezed and crushed again by the two rollers until it can pass through the sieve hole.

[0023] Furthermore, a feeding bin is fixedly connected to the frame, and an inclined plate is fixedly connected to the inner walls on both sides of the feeding bin, and baffles extending downward are fixedly connected to the opposite ends of the two inclined plates, and an arc plate is fixedly connected to the outer wall of the baffle in an integral manner, and an installation cavity is surrounded by the two arc plates, and the opposite ends of the two inclined plates form a feeding port, and the feeding port is connected to the installation cavity, and a quantitative material roller is horizontally rotatably connected to the outer wall of the feeding bin through a rotating shaft, and the quantitative material roller is coaxially engaged in the installation cavity, and a quantitative material storage groove in the form of a notch is provided on the periphery of the quantitative material roller, and an annular sliding cavity is provided in the quantitative material roller, and two fan-shaped blocks are engaged in the sliding cavity, and the fan-shaped blocks can slide freely around the circumference of the quantitative material roller in the sliding cavity, and the sliding cavity is connected to the quantitative material storage groove, and an adjusting component for driving the two fan-shaped blocks to move relative to each other is provided on the screening part, and the adjusting component is used to adjust the internal volume of the quantitative material storage groove.

[0024] Through the above technical scheme, the rotating shaft reciprocates to make the material in the feeding bin fall into the quantitative storage trough, and then as the rotating shaft rotates, the mouth of the quantitative storage trough rotates downward, so that the material can fall between the two rollers under the action of gravity, thereby realizing quantitative feeding of the material and avoiding the accumulation of material between the two rollers and uneven crushing. In addition, by arranging two fan-shaped blocks to slide synchronously in opposite directions in the sliding cavity, the internal volume of the quantitative storage trough can be adjusted. In this way, when there are more uncompletely crushed materials in the material transfer cavity, the internal volume of the quantitative storage trough is reduced, so that the amount of material transported from the feeding bin to between the two rollers can be reduced, thereby preventing more material from accumulating between the two rollers after mixing with the uncompletely crushed materials, thereby causing uneven crushing.

[0025] Furthermore, the adjustment component includes a plurality of sensors installed on the outer wall of the screening part, an electromagnet is commonly provided at both ends of the quantitative material roller, a spring is installed in each of the two cavities separated by the electromagnet in the sliding cavity, and both ends of each spring in the direction of elastic force are respectively fixed to the fan-shaped block and the surface of the electromagnet.

[0026] Through the above technical solution, the incompletely crushed materials in the material dispensing cavity are collected by sensors. When multiple sensors generate signals at the same time, the external control cabinet will control the electromagnet to cut off the power, so that the two fan-shaped blocks move toward the outside of the mouth of the sliding cavity, thereby reducing the internal volume of the quantitative storage trough.

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

[0028] (1) In the present invention, when the rollers rotate, the material blocks will exert downward pressure on the materials that fall between the two rollers, so that the materials can be grabbed by the rollers. In addition, when the material blocks rotate to a fixed position, the shifting mechanism starts to drive the material blocks to move in the direction of being retracted into the inner side of the accommodating cavity, so that when the material blocks on the two rollers approach each other, they can be retracted into the accommodating cavity, thereby avoiding interference. In this way, the gap between the two rollers can be minimized to adapt to the crushing of materials with smaller volumes;

[0029] (2) In the present invention, when the material-moving block slides toward the inner side of the accommodating cavity, the serrated portion will contact the surface of the material and exert force on the surface of the material, so that the material can be turned over to avoid multiple materials from piling up together. In addition, the serrated portion also exerts a downward squeezing force on the surface of the material, so that the serrated portion can generate a cutting force on the plastic material, so that grooves are cut on the surface of the plastic material, so that when the plastic material is squeezed by the two rollers, the plastic material can be quickly split at the grooves;

[0030] (3) In the present invention, the rotating shaft reciprocates to allow the material in the feeding bin to fall into the quantitative storage trough, and then as the rotating shaft rotates, the mouth of the quantitative storage trough rotates downward, so that the material can fall between the two rollers under the action of gravity, thereby achieving quantitative feeding of the material and avoiding the accumulation of material between the two rollers to cause uneven crushing. In addition, by arranging two fan-shaped blocks to slide synchronously in opposite directions in the sliding cavity, the internal volume of the quantitative storage trough can be adjusted. In this way, when there is a large amount of incompletely crushed material in the material transfer cavity, the internal volume of the quantitative storage trough is reduced, so that the amount of material transported from the feeding bin to between the two rollers can be reduced, thereby preventing the accumulation of a large amount of material between the two rollers after mixing with the incompletely crushed material, thereby causing uneven crushing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 2 yes Figure 1 A schematic diagram of the structure from another perspective;

[0033] Figure 3 yes Figure 1 The schematic diagram of the positional relationship of the frame, motor and reduction box is omitted;

[0034] Figure 4 yes Figure 3 A schematic diagram of the structure from another perspective;

[0035] Figure 5 yes Figure 4Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0036] Figure 6 It is a schematic diagram of the positional relationship of the roller, the material shifting block and the fixed flange seat after assembly in the present invention;

[0037] Figure 7 yes Figure 6 Schematic diagram of the explosion decomposition of the structure in the middle;

[0038] Figure 8 It is a schematic diagram of the positional relationship between the quantitative material roller and the arc block after assembly in the present invention;

[0039] Fig. 9 yes Figure 8 Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0040] Fig.10 yes Figure 8 Schematic diagram of the explosion decomposition of the structure in the middle;

[0041] Fig.11 It is a schematic diagram of the positional relationship between the screening part and the partition after assembly in the present invention.

[0042] Figure numerals: 1. Motor; 2. Reducer; 3. Frame; 4. Feed bin; 5. Screening part; 6. Screen hole; 7. Driving roller; 8. Gear; 9. Inclined plate; 10. Feed inlet; 11. Partition; 12. Vibrator; 13. Fixed flange seat; 14. Sensor; 15. Baffle; 16. Material shifting chamber; 17. Sliding chamber; 18. Roller; 19. Arc plate; 20. Material shifting block; 21. Serrated part; 22. Waist-shaped hole; 23. Accommodating chamber; 24. Small arc groove; 25. Large arc groove; 26. Sliding pin; 27. Rotating shaft; 28. Fan-shaped block; 29. ​​Quantitative storage trough; 30. Electromagnet; 31. Quantitative material roller; 32. Spring. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] like Figure 1-Figure 11 As shown, this embodiment provides a roller crusher, including a frame 3 of the roller crusher, on which two rollers 18 are rotatably connected by installing a driving roller 7, a reduction box 2 is installed on the frame 3, the output end of the reduction box 2 is drivingly connected to one of the driving rollers 7, and the two driving rollers 7 are respectively fixedly sleeved with a gear 8, and the two gears 8 are externally meshed, and a motor 1 is installed at the input end of the reduction box 2, and the output shaft of the motor 1 is drivingly connected to the input end of the reduction box 2;

[0045] The periphery of the roller 18 is provided with a plurality of accommodating cavities 23 arranged in an array along its axial direction, and the length direction of the accommodating cavities 23 is parallel to the axial direction of the roller 18. In addition, a material shifting block 20 is engaged in each accommodating cavity 23, and the material shifting block 20 slides freely in the radial direction of the roller 18 in the accommodating cavity 23, and the length direction of the material shifting 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 by screws, and the four fixed flange seats 13 correspond to the axial ends of the two rollers 18 respectively, and the two ends of the length direction of the material shifting block 20 are fixedly connected with sliding pins 26, and the end surface of the roller 18 is provided with a waist-shaped hole 22 for the sliding pin 26 to pass freely, and the end surface of the fixed flange seat 13 facing the roller 18 is provided with a special-shaped slide groove, and the special-shaped slide groove includes a plurality of fixed flange seats 13 connected in sequence from head to tail. The large arc groove 25 and the small arc groove 24 are formed, and the inner wall of the small arc groove 24 extends toward the radial inner side of the fixed flange seat 13. One end of the sliding pin 26 passes through the waist-shaped hole 22 and is inserted into the special-shaped slide groove, and slides freely in the special-shaped slide groove. In addition, a plurality of serrations 21 are provided on the outer wall of one side of the material-pickup block 20. The length direction of the serrations 21 is consistent with the length direction of the material-pickup block 20. The side of the material-pickup block 20 facing the outer side of the periphery of the roller 18 is an arc surface, so that after the material-pickup block 20 is retracted into the accommodating chamber 23, the arc surface of the material-pickup block 20 matches the periphery of the roller 18, that is, it is a smooth transition. In addition, the material and heat treatment method of the material-pickup block 20 in this embodiment are consistent with the material and heat treatment method of the roller 18, thereby ensuring that the surface of the material-pickup block 20 has sufficient hardness;

[0046] A screening part 5 is provided on the frame 3, and the outer walls of both sides of the screening part 5 are connected to the frame 3 by screws, or by welding. The screening part 5 is arranged below the roller 18 and the two sides of the screening part 5 are arc-shaped. The two rollers 18 are respectively located in the two arc-shaped parts of the screening part 5. A plurality of sieve holes 6 are provided on 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 the external control cabinet through a cable. The material-diverting block 20 passes through the outer wall of one side of the roller 18 and the inner wall of the arc-shaped part of the screening part 5 to form a material-diverting cavity 16. The two ends of the screening part 5 are fixedly connected with a partition 11, which is used to block the two sides of the roller 18, so that the material-diverting cavity 16 is closed on both sides corresponding to the axial direction of the roller 18. The outer wall of the partition 11 is provided with a through groove for the roller 18 to pass freely.

[0047] A feeding bin 4 is welded on the frame 3. The feeding bin 4 is in a beam shape from top to bottom. Inclined plates 9 are fixedly connected to the inner walls on both sides of the feeding bin 4. The opposite ends of the two inclined plates 9 are fixedly connected to baffles 15 extending downward. The outer wall of the baffle 15 is integrally formed with an arc plate 19. An installation cavity is surrounded by the two arc plates 19. The opposite ends of the two inclined plates 9 form a feed port 10. The feed port 10 is connected to 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 to an external small motor. The small motor is electrically connected to the control cabinet through a cable. When the output shaft of the small motor rotates, The rotating shaft 27 is synchronously driven to rotate. In addition, a quantitative material roller 31 is fixedly sleeved on the part where the rotating shaft 27 penetrates 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 engaged in the installation cavity. A quantitative material storage groove 29 in the form of a notch is provided on the periphery of the quantitative material roller 31. An annular sliding cavity 17 is provided in the quantitative material roller 31. Two fan-shaped blocks 28 are engaged in the sliding cavity 17. The fan-shaped blocks 28 slide freely around the circumference of the quantitative material roller 31 in the sliding cavity 17. The sliding cavity 17 is connected to the quantitative material storage groove 29. The outer wall of the screening part 5 is installed with multiple A sensor 14 is provided, and the sensor 14 is used to detect whether there is material in the material-dispensing cavity 16, and the power on and off of the sensor 14 matches the rotation rate of the roller 18, that is, each time the sensor 14 is powered on, it can just correspond to the material-dispensing cavity 16, thereby avoiding the interference of the material-dispensing block 20 on the sensor 14 signal. The two ends of the quantitative material roller 31 are jointly penetrated by an electromagnet 30, and the two cavities separated by the electromagnet 30 in the sliding cavity 17 are respectively installed with a spring 32, and the two ends of each spring 32 in the elastic direction are respectively fixed to the surface of the sector block 28 and the electromagnet 30, and the sector block 28 is made of a magnetic conductive material (such as iron, cobalt, and nickel). 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 direction close to the electromagnet 30 in the sliding cavity 17, 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, and the elastic potential energy accumulated in the spring 32 will be released, thereby driving the sector block 28 to move toward the outside of the mouth of the sliding cavity 17 (or in the direction of the quantitative storage tank 29), thereby reducing the internal volume of the quantitative storage tank 29.

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

[0049] Put the material into the feeding bin 4, start the motor 1, the motor 1 drives the reduction box 2 to operate, so that the reduction box 2 drives the driving roller 7 to rotate, and through the rotation of the two gears 8, the two rollers 18 rotate synchronously in the opposite direction. After the material enters the feeding bin 4, it enters the quantitative storage tank 29 of the quantitative material roller 31 through the feeding port 10 under the action of gravity. 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 tank 29 can face downward The material in the quantitative storage tank 29 is rotated, and then the material in the quantitative storage tank 29 is dropped between the two rollers 18. Then the small motor is controlled by the control cabinet to rotate in the opposite direction until the mouth of the quantitative storage tank 29 is rotated to the upward state again. During this process, the electromagnet 30 is in the energized state, and then the two sector blocks 28 are magnetically attracted, so that the sector blocks 28 overcome the elastic force of the spring 32, and then slide toward the inner side of the sliding cavity 17 until the surface of the sector block 28 is flush with the inner wall of the quantitative storage tank 29, and at this time, the spring 32 is compressed and accumulates elastic potential energy.

[0050] The material-digging block 20 on the roller 18 will exert pressure on the material, so that the material can be bitten by the two rollers 18 and then crushed. As the material is gradually squeezed by the rollers 18, the sliding pin 26 on the material-digging block 20 that squeezes the material will slide from the large arc groove 25 of the fixed flange seat 13 to the small arc groove 24, so that the material-digging block 20 moves in the direction of being retracted into the accommodating cavity 23 until one end of the material-digging block 20 in the width direction abuts against the inner wall of the accommodating cavity 23, and at this time, the arc surface of the material-digging block 20 is flush with the periphery of the roller 18 and presents a smooth transition;

[0051] After being squeezed and crushed by the two rollers 18, the materials will fall onto the surface of the screening part 5. The materials that meet the requirements will fall from the sieve holes 6 of the screening part 5 and be collected by workers, while the materials with larger volumes will enter the material-dispensing cavity 16 and be driven by the material-dispensing block 20 to slide on the inner wall of the arc-shaped part of the screening part 5 until they fall between the two rollers 18 again and are crushed again by the rollers 18.

[0052] When there are a lot of incompletely crushed materials in the material-dispensing cavity 16, a plurality of sensors 14 will generate induction signals and feed them back to the external control cabinet. The control cabinet controls the electromagnet 30 to disconnect the power supply. At this time, the magnetism of the electromagnet 30 disappears, and the elastic potential energy accumulated in the spring 32 will be released, thereby driving the sector block 28 to move toward 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 during the next feeding is reduced, 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 is synchronously turned on again, so that the electromagnet 30 generates magnetism and the fan-shaped block 28 moves in the direction of retracting into the inner side 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 on and off by the control cabinet. Each time the power supply of the sensor 14 is turned on, as long as a signal is generated, the power supply of the electromagnet 30 will be disconnected by the control cabinet. In this way, it is ensured that the total amount of material entering between the two rollers 18 (the sum of the material falling into the rollers 18 from the quantitative storage tank 29 and the material that is not completely crushed) will not be too different each time the material is fed. In addition, generally speaking, those skilled in the art know that the proportion of incompletely crushed material will not be too large during each crushing process.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A roller crusher, comprising a frame (3) of the roller crusher, wherein the frame (3) is rotatably connected to two rollers (18) by installing a driving roller (7), and the two rollers (18) are driven by a driving mechanism to rotate synchronously in opposite directions, characterized in that: Also includes: A material shifting block (20) is engaged in a plurality of accommodating cavities (23) provided on the periphery of the roller (18), wherein the material shifting block (20) freely slides in the accommodating cavity (23) along the radial direction of the roller (18), and the length direction of the material shifting block (20) is parallel to the axial direction of the roller (18); A toggle mechanism connected to the frame (3) is used to drive the material shifting block (20) to move in a direction of being retracted into the accommodating cavity (23) when the material shifting block (20) is rotated to a fixed position.

2. The roller crusher according to claim 1, characterized in that The driving mechanism comprises a reduction box (2) mounted on the frame (3); the output end of the reduction box (2) is drivingly connected to one of the driving rollers (7); a gear (8) is fixedly sleeved on each of the two driving rollers (7); the two gears (8) are externally meshed; a motor (1) is mounted on the input end of the reduction box (2); and the output shaft of the motor (1) is drivingly connected to the input end of the reduction box (2).

3. The roller crusher according to claim 1, characterized in that: The shifting mechanism comprises four fixed flange seats (13) connected to the frame (3), the four fixed flange seats (13) respectively corresponding to the axial ends of the two rollers (18), the two ends of the length direction of the shifting block (20) are fixedly connected with sliding pins (26), the end surface of the roller (18) is provided with a waist-shaped hole (22) for the sliding pin (26) to pass freely, and the end surface of the fixed flange seat (13) facing the roller (18) is provided with a special-shaped slide groove, the special-shaped slide groove comprises a large arc groove (25) and a small arc groove (24) connected in sequence end to end, the inner wall of the small arc groove (24) extends toward the radial inner side of the fixed flange seat (13), and one end of the sliding pin (26) passing through the waist-shaped hole (22) is inserted into the special-shaped slide groove and slides freely in the special-shaped slide groove.

4. The roller crusher according to claim 1, characterized in that A plurality of sawtooth portions (21) are formed on an outer wall of one side of the material shifting block (20).

5. The roller crusher according to claim 1, characterized in that: The side of the material shifting block (20) facing the outer side of the periphery of the roller (18) is in the form of an arc surface, so that after the material shifting block (20) is retracted into the accommodating cavity (23), the arc surface of the material shifting block (20) matches the periphery of the roller (18).

6. The roller crusher according to claim 1, characterized in that The frame (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, the two rollers (18) are respectively located in the two arc-shaped parts of the screening part (5), and the surface of the screening part (5) is provided with a plurality of sieve holes (6).

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

8. The roller crusher according to claim 6, characterized in that The material-shifting block (20) passes through the outer wall of one side of the roller (18) and the inner wall of the arc-shaped portion of the screening part (5) to form a material-shifting cavity (16). The screening part (5) is fixedly connected to a partition plate (11) at each end. The outer wall of the partition plate (11) is provided with a through groove for the roller (18) to pass freely.

9. The roller crusher according to claim 8, characterized in that A feeding bin (4) is fixedly connected to the frame (3), and an inclined plate (9) is fixedly connected to the inner walls on both sides of the feeding bin (4). The opposite ends of the two inclined plates (9) are fixedly connected to baffles (15) extending downward. The outer wall of the baffle (15) is integrally formed with an arc plate (19). An installation cavity is formed between the two arc plates (19). The opposite ends of the two inclined plates (9) form a feed inlet (10). The feed inlet (10) is connected to the installation cavity. A quantitative material roller (31) is horizontally rotatably connected to the outer wall of the feeding bin (4) via a rotating shaft (27). The quantitative material roller (31) is coaxially engaged with the In the installation cavity, a quantitative material storage groove (29) in the form of a notch is provided on the periphery of the quantitative material roller (31), an annular sliding cavity (17) is provided in the quantitative material roller (31), two fan-shaped blocks (28) are engaged in the sliding cavity (17), and the fan-shaped blocks (28) slide freely around the circumference of the quantitative material roller (31) in the sliding cavity (17), and the sliding cavity (17) is connected with the quantitative material storage groove (29), and the screening part (5) is provided with an adjustment component for driving the two fan-shaped blocks (28) to move relative to each other, and the adjustment component is used to adjust the internal volume of the quantitative material storage groove (29).

10. The roller crusher according to claim 9, characterized in that The adjustment component comprises a plurality of sensors (14) mounted on the outer wall of the screening portion (5); an electromagnet (30) is commonly provided at the two ends of the quantitative material roller (31); a spring (32) is respectively installed in two cavities separated by the electromagnet (30) in the sliding cavity (17); and the two ends of each spring (32) in the direction of elastic force are respectively fixed to the surface of the sector block (28) and the surface of the electromagnet (30).

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