A high reduction ratio double toothed roll crusher

Abstract

The application relates to a high-crushing-ratio double-toothed roller crusher, belonging to the technical field of crushers, which comprises a shell, the shell comprises a feeding opening, two rotating rollers are rotatably arranged in the shell, a driving mechanism for driving the rotating rollers to rotate is further arranged, the feeding opening is located above the rotating rollers, a buffering mechanism is arranged in the shell, the buffering mechanism comprises two buffering rods located above the rotating rollers, the buffering rods are arranged in the shell in parallel to the length direction of the rotating rollers, sliding rods are arranged on the buffering rods, the sliding rods are slidingly arranged on the buffering rods, fixed plates are fixed to the side walls of the sliding rods, buffering springs are arranged between the fixed plates and buffering plates, one end of the buffering spring is abuttingly fixed to the fixed plate, the other end of the buffering spring is abuttingly fixed to the buffering plate, and guide plates are fixed to the sides of the sliding rods close to the feeding opening. The application has the effect of prolonging the service life of the crusher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crushers, in particular to a high-crushing-ratio double-toothed-roller crusher. BACKGROUND

[0002] In the field of mine exploitation, it is often necessary to use a crusher for crushing work. The crushing principle of the crusher is to use two parallel rollers to rotate relative to each other. After the material enters the gap between the two toothed rollers, it is subjected to extrusion and shearing by the two toothed rollers to be crushed.

[0003] At present, the related double-toothed-roller crusher, such as the Chinese patent with the authorization announcement number CN216538675U, discloses a high-crushing-ratio double-toothed-roller crusher, which comprises a device main body. The inside of the device main body is provided with a vibration plate, and the vibration plate is movably connected with the device main body. The bottom of the vibration plate is provided with a motor, and the outside of the motor is provided with a transmission rod. The vibration plate is connected with the motor through the transmission rod. The bottom of the device main body is provided with a bottom plate, and the bottom plate is fixedly connected with the device main body. The bottom of the bottom plate is provided with a chute, and the inside of the chute is provided with a sliding rail. The top of the device main body is provided with a discharge port, and the discharge port is fixedly connected with the device main body. The bottom of the discharge port is provided with a crushing box. The inside of the crushing box is provided with two rotating rollers.

[0004] In the related technology, since the large block of material to be processed and crushed is relatively heavy, when a large amount of large block of material falls from the discharge port, it has a relatively large impact force, which can easily cause wear of the middle part of the toothed roller or cause the toothed roller to bend, thereby reducing the service life of the crusher. SUMMARY

[0005] In order to reduce the damage of the toothed roller of the crusher caused by the impact of the large block of material, the present application provides a high-crushing-ratio double-toothed-roller crusher.

[0006] The high-crushing-ratio double-toothed-roller crusher provided by the present application adopts the following technical scheme:

[0007] A high-crushing-ratio double-toothed-roller crusher comprises a shell, the shell comprises a discharge port, two rotating rollers are rotatably installed in the shell, a driving mechanism for driving the rotating rollers to rotate is further included, the discharge port is located above the rotating rollers, a buffer mechanism installed in the shell is further included, the buffer mechanism comprises two buffer rods located above the rotating rollers, the buffer rods are both arranged in the shell in parallel to the length direction of the rotating rollers, a sliding rod is arranged on each of the buffer rods, the sliding rod is slidably installed on the buffer rod, a fixed plate is fixed to the side wall of the sliding rod, a buffer spring is fixed between the fixed plate and the buffer plate, one end of the buffer spring is abuttingly fixed to the fixed plate, and the other end of the buffer spring is abuttingly fixed to the buffer plate, and a guide plate is fixed to the side of the sliding rod close to the discharge port.

[0008] By adopting the above technical solution, during the crushing operation, large pieces of material move from top to bottom for crushing. Two buffer rods are located above the rotating roller. When large pieces of material enter the housing from the discharge port, they need to pass through the two buffer rods first. Under the action of the buffer rods and buffer springs, the downward movement of the large pieces of material is buffered to a certain extent. The guide plate further increases the contact area with the material, thereby reducing the wear and bending of the rotating roller caused by the gravity acceleration of the large pieces of material hitting the rotating roller.

[0009] Optionally, the guide plate has a slope that gradually slopes downward from the side closer to the sliding rod to the side farther away from the sliding rod.

[0010] By adopting the above technical solution, the inclined surface of the guide plate guides the material, reducing the situation where the material gathers in the middle of the roller for crushing.

[0011] Optionally, the inner wall of the housing is provided with a sliding groove for the buffer rod to slide in the horizontal direction. Both ends of the buffer rod are slidably connected to the sliding groove. The buffer mechanism also includes a transmission component that allows the two buffer rods to slide horizontally within the sliding groove.

[0012] By adopting the above technical solution, if the material volume is too large to pass through the gap between the two buffer rods, the transmission component can move the two buffer rods in a direction away from each other, so that the large pieces of material can move smoothly downwards and be crushed by the rotating roller, reducing the impact force of the large pieces of material on the rotating roller and ensuring that the large pieces of material can be crushed smoothly.

[0013] Optionally, the transmission assembly includes a first rack fixed to the end of the sliding rod away from the guide plate. The first rack passes through the buffer rod and is slidably connected to the buffer rod. A cavity is provided inside the buffer rod, and a first gear is rotatably installed in the cavity. The first gear meshes with the first rack. A rotating shaft is coaxially fixed at the axis of the first gear. The rotating shaft extends towards the sliding groove, and a second gear is coaxially fixed at the end of the rotating shaft away from the first gear. A second rack is also fixed inside the sliding groove. The second rack is arranged along the length of the sliding groove, and the second gear meshes with the second rack.

[0014] By adopting the above technical solution, when the sliding rod is impacted by the material and slides downward, the first gear meshing with the first rack rotates, causing the second gear to rotate simultaneously. The second gear moves along the length of the second rack, causing the two buffer rods to move away from each other, ensuring the smooth passage of large pieces of material. Furthermore, the transmission component absorbs some of the gravitational acceleration when large pieces of material fall, reducing the impact force on the rotating roller and helping to extend the service life of the rotating roller.

[0015] Optionally, a slider is fixed to one end of the buffer rod near the slide groove, and the slider is slidably connected to the slide groove.

[0016] By adopting the above technical solution, the sliding connection between the slider and the groove allows the two ends of the buffer rod to slide more stably along the length of the groove.

[0017] Optionally, a return spring is also fixed inside the slide groove. The length direction of the return spring is parallel to the length direction of the slide groove. One end of the return spring is fixedly connected to the slider, and the other end is fixedly connected to the inner wall of the slide groove.

[0018] By adopting the above technical solution, the return spring can smoothly reset the two buffer rods and maintain a fixed interval after they move away from each other, thus buffering the falling materials.

[0019] Optionally, a cleaning mechanism installed inside the housing is also included. The cleaning mechanism includes a connecting rod fixed inside the housing. The connecting rod is arranged along the length of the rotating roller. A plurality of cleaning rods are fixed at intervals on the side of the connecting rod near the rotating roller. Roller teeth are fixed at intervals on the circumferential surface of the rotating roller. Each cleaning rod is located between adjacent roller teeth.

[0020] By adopting the above technical solution, when the roller is crushing, small particles of material may be embedded between the roller teeth, reducing the crushing effect of the roller. The cleaning mechanism cleans the gaps between the roller teeth to ensure the crushing effect of the roller.

[0021] Optionally, the cleaning mechanism may further include an adjustment component for adjusting the position of the cleaning rod within the housing.

[0022] By adopting the above technical solution, the adjustment component can adjust the distance between the cleaning rod and the rotating roller, thereby improving the cleaning work.

[0023] Optionally, the adjustment assembly includes an adjustment rod fixedly installed on the side of the connecting rod away from the cleaning rod, an adjustment port is provided through the side wall of the housing, the adjustment rod extends through the adjustment port, an installation plate is fixed to the outer side wall of the housing, and a bolt is threadedly connected to the installation plate, the bolt abutting and fixing with the adjustment rod.

[0024] By adopting the above technical solution, the length of the adjusting rod extending into the housing is adjusted and then secured with bolts, achieving a rapid adjustment effect.

[0025] Optionally, the drive mechanism includes a motor and a coupling located outside the housing. The output end of the motor is fixedly connected to the coupling, and the end of the coupling away from the motor is fixedly connected to a rotating roller.

[0026] By adopting the above technical solution, the drive mechanism drives two rotating rollers to rotate relative to each other, thereby realizing the crushing of large pieces of material.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. During the crushing process, large pieces of material move downwards for crushing. Two buffer rods are located above the rotating roller. When large pieces of material enter the housing from the discharge port, they need to pass through the two buffer rods first. Under the action of the buffer rods and buffer springs, the downward movement of the large pieces of material is buffered. The guide plate further increases the contact area with the material, thereby reducing the wear and bending of the rotating roller caused by the gravitational acceleration of the large pieces of material hitting the rotating roller.

[0029] 2. If the material is too large to pass through the gap between the two buffer bars, the transmission assembly can move the two buffer bars away from each other, so that the large pieces of material can move smoothly downward and be crushed by the roller, reducing the impact force of the large pieces of material on the roller and ensuring that the large pieces of material can be crushed smoothly.

[0030] 3. When the roller is crushing, small particles of material may become embedded between the roller teeth, reducing the crushing effect of the roller. The cleaning mechanism cleans the gaps between the roller teeth to ensure the crushing effect of the roller. Attached Figure Description

[0031] Figure 1 This is a structural diagram of the housing, drive mechanism, and buffer mechanism.

[0032] Figure 2 This is a cross-sectional view of the shell.

[0033] Figure 3 It is the buffer mechanism in Figure 2 A magnified view of a portion of point A in the middle.

[0034] Figure 4 This is a cross-sectional view of the transmission assembly.

[0035] Figure 5 It is the cleaning agency in Figure 2 A magnified view of a section at point B in the middle.

[0036] Explanation of reference numerals in the attached drawings: 1. Base; 2. Housing; 21. Feed port; 22. Discharge port; 23. Rotary roller; 231. Roller tooth; 24. Slide groove; 25. Adjustment port; 3. Drive mechanism; 31. Coupling; 32. Motor; 4. Buffer mechanism; 41. Buffer rod; 411. Perforation; 412. Slider; 413. Cavity; 42. Sliding rod; 421. Fixing plate; 422. Buffer spring; 43. Guide plate; 44. Transmission assembly; 441. First rack; 442. First gear; 443. Rotating shaft; 444. Second gear; 445. Second rack; 45. Return spring; 5. Cleaning mechanism; 51. Connecting rod; 52. Cleaning rod; 53. Adjustment assembly; 531. Adjustment rod; 532. Mounting plate; 533. Bolt. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0038] This application discloses a high crushing ratio double toothed roll crusher.

[0039] Reference Figure 1 A high crushing ratio double-toothed roller crusher includes a base 1 fixed to the ground, a shell 2 fixed on the base 1, a discharge port 21 on the upper surface of the shell 2, and a discharge port 22 on the lower surface of the shell 2. Two rotating rollers 23 for crushing materials are rotatably installed inside the shell 2. The two rotating rollers 23 are parallel to each other, and a number of roller teeth 231 are fixedly fixed on the circumference of each rotating roller 23. The crusher also includes a drive mechanism 3 for driving the rotating rollers 23 to rotate. The drive mechanism 3 includes a coupling 31 fixed to the base 1 and a motor 32. One end of each rotating roller 23 is fixedly connected to the coupling 31, and the end of the coupling 31 away from the rotating roller 23 is fixedly connected to the output end of the motor 32. The motor 32 drives the rotating rollers 23 to rotate inside the shell 2, so that the material entering the shell 2 is crushed and discharged from the discharge port 22. A buffer mechanism 4 is also installed inside the housing 2. The buffer mechanism 4 is located above the two rotating rollers 23. It can buffer the impact force caused by large pieces of material entering the housing 2 on the rotating rollers 23, thereby reducing the wear and bending of the rotating rollers 23 due to impact.

[0040] Reference Figure 2 and Figure 3 The buffer mechanism 4 includes two buffer rods 41 installed inside the housing 2. The two buffer rods 41 are arranged opposite to the rotating roller 23, and the buffer rods 41 are parallel to the axis of the rotating roller 23. Two sliding rods 42 are vertically arranged on the upper side of each buffer rod 41. The two sliding rods 42 are parallel to each other. Two through holes 411 are opened through each buffer rod 41. The lower section of the sliding rod 42 vertically passes through the through holes 411, and the sliding rod 42 is slidably connected to the buffer rod 41 through the through holes 411.

[0041] Each sliding rod 42 has a horizontally fixed plate 421 fixed to its side wall. A vertically fixed buffer spring 422 is fixed between the fixed plate 421 and the buffer plate. One end of the buffer spring 422 is fixed to the fixed plate 421, and the other end of the buffer spring 422 is fixed to the buffer plate.

[0042] Guide plates 43 are fixed to the upper end of the sliding rod 42. The guide plates 43 are folded plates with an upward convexity in the middle. The guide plates have a slope that gradually slopes downward from the side close to the sliding rod 42 to the side away from the sliding rod 42. The guide plates 43 further increase the contact area with the material. When a large piece of material falls on the guide plates 43, the sliding rod 42 and the first rack 441 slide downward. The buffer spring 422 is compressed and plays a buffering role, thereby reducing the direct impact of the material on the rotating roller 23 and preventing wear or bending of the rotating roller 23, thus ensuring the crushing effect of the crusher.

[0043] The two opposite inner sidewalls of the housing 2 are provided with horizontally arranged sliding grooves 24. The position of the sliding grooves 24 is higher than that of the rotating roller 23, and both ends of the buffer rod 41 extend into the sliding grooves 24. The buffer rod 41 can slide horizontally along the length of the sliding groove 24. A slider 412 is fixed to one end of the buffer rod 41 near the sliding groove 24. The slider 412 is slidably connected to the sliding groove 24, which further enhances the stability of the buffer rod 41 when sliding in the sliding groove 24.

[0044] Reference Figure 4 The buffer mechanism 4 also includes a transmission assembly 44, which enables the buffer rods 41 to slide in a direction that moves closer to or further away from each other, thereby ensuring that large pieces of material can pass through between the buffer rods 41 and continue to move downwards to be crushed. The transmission assembly 44 includes a first rack 441 fixed to the lower end of the sliding rod 42, and the first rack 441 can vertically pass through the buffer rod 41 through the through hole 411. A cavity 413 is also provided in the buffer rod 41, and a first gear 442 is rotatably installed in the cavity 413. The axis of the first gear 442 is parallel to the length direction of the buffer rod 41, and the first gear 442 meshes with the first rack 441. A rotating shaft 443 is fixed at the axis of the first gear 442. The rotating shaft 443 is parallel to the length direction of the buffer rod 41 and extends towards the slide groove 24. The other end of the rotating shaft 443 extends out of the buffer rod 41 and is coaxially fixed with a second gear 444. Under the action of the rotating shaft 443, the second gear 444 and the first gear 442 can rotate simultaneously. A second rack 445 is fixed in the slide groove 24. The second rack 445 is parallel to the length direction of the slide groove 24, and the second gear 444 meshes with the second rack 445.

[0045] When the force of the falling material impacts the sliding rod 42, the sliding rod 42 drives the first rack 441 to slide downward. When the first rack 441 moves downward under the downward force, the first gear 442 meshing with it rotates, and at the same time the second gear 444 rotates, causing the second gear 444 to slide laterally along the length of the second rack 445. This allows the two buffer rods 41 to slide in a direction away from each other, so that large pieces of material can pass between the two buffer rods 41. When large pieces of material fall onto the rotating roller 23, the impact force of the falling material is reduced, thereby ensuring the service life of the rotating roller 23.

[0046] Reference Figure 3 and Figure 4 When the gap between the two buffer rods 41 needs to be restored to the initial state, a return spring 45 is fixed between the slider 412 and the slide 24. The length direction of the return spring 45 is parallel to the length direction of the slide 24. The return spring 45 is located on the side of the two adjacent sliders 412 that are far apart from each other. One end of the return spring 45 is fixedly connected to the slider 412, and the other end is fixed to the inner wall of the slide 24. The return spring 45 keeps the buffer rod 41 in a position directly above the rotating roller 23, and plays a buffering role when the material entering the housing 2 falls.

[0047] Reference Figure 5 The crusher also includes a cleaning mechanism 5. During the crushing process, small pieces of material after crushing may get stuck between two adjacent roller teeth 231. The cleaning mechanism 5 can clean the roller 23. The cleaning mechanism 5 includes two connecting rods 51 installed in the housing 2. The connecting rods 51 are parallel to the length direction of the roller 23 and are located on the side of the two rollers 23 that are far apart from each other. On the side of the connecting rods 51 near the roller 23, a plurality of cleaning rods 52 are fixed at intervals. The plurality of cleaning rods 52 are parallel to each other and each cleaning rod 52 is located between adjacent roller teeth 231. During the rotation of the roller teeth 231, the cleaning rods 52 can clean the small pieces of material embedded between the roller teeth 231.

[0048] To facilitate the adjustment of the cleaning rod 52's position and improve its cleaning performance, the cleaning mechanism 5 also includes an adjustment component 53. The adjustment component 53 includes an adjustment rod 531, which is vertically fixed to the connecting rod 51 on the side away from the cleaning rod 52. The adjustment rod 531 is horizontally positioned, and an adjustment port 25 is provided through the side wall of the housing 2. The adjustment rod 531 extends horizontally out of the adjustment port 25. A horizontally positioned mounting plate 532 is also fixed to the outer side wall of the housing 2, located above the adjustment port 25. A bolt 533 is threaded onto the mounting plate 532, and the bolt 533 is vertically positioned with its lower end abutting against the adjustment rod 531. When the bolt 533 moves away from the adjustment rod 531, the adjustment rod 531 can slide horizontally, thereby adjusting the cleaning rod 52. When adjusted to the designated position, the bolt 533 tightens against the adjustment rod 531 to secure it.

[0049] The implementation principle of a high crushing ratio double toothed roll crusher in this application embodiment is as follows:

[0050] When the crusher is working, the material to be crushed enters the housing 2 from the discharge port 21. The rotating roller 23 rotates relative to the material under the action of the drive mechanism 3, so that the material is crushed and moves downward and is discharged from the discharge port 22. The buffer mechanism 4 buffers the material entering the housing 2, reducing the direct impact of falling material on the rotating roller 23. Especially when large pieces of material enter the housing 2, the sliding rod 42 moves downward under the impact force of the material, and the first rack 441 moves downward to absorb the impact force. At the same time, the transmission component 44 drives the two buffer rods 41 to move away from each other, so that large pieces of material can pass through the gap between the two buffer rods 41, ensuring the crushing effect of large pieces of material and preventing damage to the rotating roller 23. The cleaning mechanism 5 cleans the small pieces of material embedded between the roller teeth 231, further improving the crushing effect.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high reduction ratio double toothed roll crusher comprising a housing (2) having a feed opening (21) and two rotatable rolls (23) mounted for rotation within the housing (2), a drive mechanism (3) for driving the rolls (23) in rotation, the feed opening (21) being located above the rolls (23), characterised in that: Further include the buffer mechanism (4) installed in the shell (2), the buffer mechanism (4) includes two buffer rods (41) above the rotating roller (23), the buffer rod (41) is arranged in the shell (2) parallel to the length direction of the rotating roller (23), the buffer rod (41) is provided with a sliding rod (42), the sliding rod (42) is slidably installed on the buffer rod (41), the side wall of the sliding rod (42) is fixed with a fixed plate (421), the fixed plate (421) is fixed with a buffer spring (422) between the buffer plate, one end of the buffer spring (422) is fixed with the fixed plate (421), the other end is fixed with the buffer plate, the sliding rod (42) is fixed with a guide plate (43) on the side close to the discharge port (21). The inner wall of the shell (2) is provided with a sliding groove (24) for the sliding of the buffer rod (41) in the horizontal direction, both ends of the buffer rod (41) are slidably connected with the sliding groove (24), the buffer mechanism (4) further includes a transmission assembly (44) for sliding the two buffer rods (41) in the sliding groove (24). The transmission assembly (44) includes a first rack (441) fixed on the end of the sliding rod (42) away from the guide plate (43), the first rack (441) penetrates the buffer rod (41) and is slidably connected with the buffer rod (41), the buffer rod (41) is provided with a cavity (413), the first gear (442) is rotatably installed in the cavity (413), the first gear (442) is engaged with the first rack (441), the shaft center of the first gear (442) is coaxially fixed with a rotating shaft (443), the rotating shaft (443) extends towards the sliding groove (24), and the end of the rotating shaft (443) away from the first gear (442) is coaxially fixed with a second gear (444), the second rack (445) is further fixed in the sliding groove (24), the second rack (445) is arranged along the length direction of the sliding groove (24), and the second gear (444) is engaged with the second rack (445). The end of the buffer rod (41) close to the sliding groove (24) is fixed with a sliding block (412), and the sliding block (412) is slidably connected with the sliding groove (24). The sliding groove (24) is further provided with a return spring (45), the length direction of the return spring (45) is parallel to the length direction of the sliding groove (24), one end of the return spring (45) is fixedly connected with the sliding block (412), and the other end is fixedly connected with the inner wall of the sliding groove (24); the return spring (45) keeps the buffer rod (41) in the position above the rotating roller (23).

2. A high reduction ratio double toothed roll crusher as claimed in claim 1, wherein: The guide plate (43) has a slope gradually inclined downward from the side close to the sliding rod (42) to the side away from the sliding rod (42).

3. A high reduction ratio double toothed roll crusher as claimed in claim 1, wherein: Further comprising a cleaning mechanism (5) installed in the shell (2), the cleaning mechanism (5) comprises a connecting rod (51) fixed in the shell (2), the connecting rod (51) is arranged along the length direction of the rotating roller (23), a plurality of cleaning rods (52) are fixed at intervals on the side of the connecting rod (51) close to the rotating roller (23), and roller teeth (231) are fixed at intervals on the circumferential surface of the rotating roller (23), and each cleaning rod (52) is located between adjacent roller teeth (231).

4. A high reduction ratio double toothed roll crusher as claimed in claim 3, wherein: The cleaning mechanism (5) further comprises an adjusting assembly (53) for adjusting the position of the cleaning rod (52) in the shell (2).

5. A high reduction ratio double toothed roll crusher as claimed in claim 4, wherein: The adjusting assembly (53) comprises an adjusting rod (531) fixedly installed on the side of the connecting rod (51) away from the cleaning rod (52), the side wall of the shell (2) is provided with an adjusting opening (25), the adjusting rod (531) penetrates through and extends out of the adjusting opening (25), the outer side wall of the shell (2) is fixedly provided with a mounting plate (532), the mounting plate (532) is threadedly connected with a bolt (533), and the bolt (533) is fixedly connected with the adjusting rod (531).

6. A high reduction ratio double toothed roll crusher as claimed in claim 1, wherein: The driving mechanism (3) comprises a motor (32) and a shaft coupling (31) located outside the shell (2), the output end of the motor (32) is fixedly connected with the shaft coupling (31), and one end of the shaft coupling (31) away from the motor (32) is fixedly connected with one rotating roller (23).

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