A pulverizing device for raw materials of a three-way catalyst

Abstract

This invention relates to the field of pulverization technology and discloses a pulverization device for three-way catalyst raw materials, including a pulverization box and a pulverization assembly. The pulverization box has a feed inlet, and the pulverization assembly is disposed inside the pulverization box. A cylinder is connected to the bottom of the pulverization box, and a discharge outlet is located at the bottom of the cylinder. A sieve plate is connected inside the cylinder, and the sieve plate has a group of holes. A circular hole is located in the middle of the sieve plate. A rotating shaft is rotatably connected inside the cylinder, passing through the circular hole. The diameter of the rotating shaft is smaller than the diameter of the circular hole. Several fixing plates are circumferentially arranged on the rotating shaft, and a base plate is located at the bottom of the fixing plates. A circular shaft is rotatably connected to the base plate, and a grinding roller is coaxially connected to the circular shaft, located above the sieve plate. The invention also includes a drive assembly for driving the rotating shaft to rotate and a power assembly for driving the circular shaft to rotate. This invention mainly solves the problem of cumbersome operation in existing pulverization devices that process raw materials and convert them all into pulverized materials of the required size.

Description

Technical Field

[0001] This invention relates to the field of pulverization technology, specifically to a pulverization device for raw materials of a three-way catalyst. Background Technology

[0002] Three-way catalysts are supported precious metal catalytic materials. They use three precious metals as active components, combined with active alumina and rare earth oxides as coating additives, and are coated on the surface of a honeycomb carrier. They can simultaneously carry out oxidation and reduction reactions on three types of pollutants in automobile exhaust, achieving harmless transformation, hence the name "three-way" catalyst. The production and preparation of three-way catalysts involves the crushing of raw materials, which requires the use of a crusher. However, traditional crushers can only crush the raw materials once, and the crushed materials are of varying sizes. It is necessary to manually select the crushed materials of the required size, which is cumbersome and inefficient.

[0003] To overcome the problems of traditional crushers, a common solution is to install a filter screen near the discharge port of the crusher. The filter screen sieves the crushed material, directly obtaining the desired size. For example, Chinese patent CN224308583U discloses a grain crushing device with sieving function, including a frame, a crushing box fixedly connected to the frame, support legs fixedly connected to the bottom of the frame, and a sieving mechanism below the frame. The sieving mechanism includes a sieving plate and a slot. A fixed frame is inserted into the slot, and a filter screen is fixedly connected inside the fixed frame. A baffle is hinged to the sieving plate by a pin, a limit block is fixedly connected to the sieving plate, a connecting plate is fixedly connected to the baffle, a first spring is fixedly connected to the connecting plate, and a fixed seat is fixedly connected to the sieving plate. The upper end of the first spring is fixedly connected to the bottom of the fixed seat, and a vibration motor is fixedly connected to the sieving plate. This crushing device can sieve the crushed material through the filter screen, directly obtaining the desired size, without manual operation, thus increasing work efficiency.

[0004] The above-mentioned crushing device has the following problems during actual use: the crushed material can be screened through the filter screen to directly obtain the crushed material of the required size. However, in order to improve the utilization rate of the crushed material, it is necessary to manually collect the crushed material that does not meet the size requirements and then transfer it to the crushing box for further crushing until all the crushed material meets the size requirements. Therefore, it is cumbersome to crush the raw material and convert it into crushed material of the required size. Summary of the Invention

[0005] The present invention aims to provide a pulverizing device for three-way catalyst raw materials, so as to solve the problem that the operation of existing pulverizing devices is cumbersome in pulverizing raw materials and converting them into pulverized materials of the required size.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pulverizing device for three-way catalyst raw materials, comprising a pulverizing box and a pulverizing assembly, wherein the pulverizing box is provided with a feed inlet, the pulverizing assembly is disposed inside the pulverizing box, a cylinder is connected to the bottom of the pulverizing box, and a discharge outlet is provided at the bottom of the cylinder; a screening plate is connected inside the cylinder, the screening plate is provided with a group of holes, a circular hole is provided in the middle of the screening plate, a rotating shaft is rotatably connected inside the cylinder, the rotating shaft passes through the circular hole, and the diameter of the rotating shaft is smaller than the diameter of the circular hole; a plurality of fixing plates are provided circumferentially on the rotating shaft, a base plate is provided at the bottom of the fixing plates, a circular shaft is rotatably connected to the base plate, a grinding roller is coaxially connected to the circular shaft, and the grinding roller is located above the screening plate; it also includes a drive assembly for driving the rotating shaft to rotate and a power assembly for driving the circular shaft to rotate.

[0007] Furthermore, the power assembly includes a gear ring fixed to the inner wall of the cylinder and a power gear coaxially connected to the round shaft, with the power gear meshing with the gear ring.

[0008] Furthermore, the screening plate is in frictional contact with the inner wall of the cylinder; the hole group includes several holes arranged circumferentially on the screening plate, and the holes include several screening holes opened on the screening plate in the radial direction along the rotating shaft; the inner wall of the cylinder is provided with several vertical grooves circumferentially, and vertical blocks are slidably connected in the vertical grooves, and the vertical blocks are fixedly connected to the screening plate; it also includes a linkage component for driving the screening plate to reciprocate vertically.

[0009] Furthermore, the linkage component includes a first annular groove formed on the screening plate and a cam body coaxially connected to the circular shaft. The first annular groove is provided with an annular block, and the annular block is provided with a second annular groove. Several sliders are slidably connected in the second annular groove. Friction blocks are provided on both sides of the annular block on the sliders, and the friction blocks abut against the annular block. The cam body is provided with a third annular groove, and the end of the slider away from the second annular groove is slidably connected to the third annular groove.

[0010] Furthermore, it also includes several movable blocks located between the fixed plate and the grinding roller, and the movable blocks are provided with a brush layer that abuts against the top of the screening plate; it also includes an adjustment component for driving the movable blocks to move in the radial direction of the rotating shaft.

[0011] Furthermore, the adjustment assembly includes a cylindrical cam coaxially connected to the circular shaft and an adjustment block. The cylindrical cam is provided with a curved groove. The adjustment block is slidably connected to the bottom block. One end of the adjustment block is slidably connected to the curved groove, and the other end of the adjustment block is fixedly connected to the movable block.

[0012] Furthermore, the inner wall of the cylinder is provided with several radial grooves in the circumferential direction, and radial blocks are slidably connected in the radial grooves. The radial blocks move in the radial direction along the rotating shaft. The radial blocks are located below the screening plate, and several top blocks are provided on the radial blocks. Inclined elastic blocks are provided on the top blocks, and the screening holes are located on the movement trajectory of the elastic blocks. The elastic blocks are located between two adjacent screening holes in the radial direction along the rotating shaft. It also includes a power component that drives multiple radial blocks to move as the screening plate moves vertically.

[0013] Furthermore, the power assembly includes a plurality of first wedges circumferentially fixed to the bottom of the screening plate, a second wedge fixed to the vertical block, a third wedge fixed to one end of the radial block, and a fourth wedge fixed to the other end of the radial block. The first wedges abut against the third wedges, and the fourth wedge is located on the movement trajectory of the second wedges.

[0014] Furthermore, the inner wall of the cylinder is provided with several wall blocks in the circumferential direction, and the wall blocks abut against the radial blocks.

[0015] Furthermore, the inner wall of the cylinder is provided with several support arms in the circumferential direction, and the support arms are fixedly connected to the wall block.

[0016] The principle and advantages of this scheme are:

[0017] 1. Raw materials enter the crushing chamber through the feed inlet and are crushed by the crushing components to obtain crushed material. The crushed material enters the cylinder and falls onto the screening plate. The crushed material is screened by the screening holes on the screening plate so that the crushed material of qualified size passes through the screening holes and is discharged from the discharge port, so that the crushed material of qualified size can be obtained directly at the discharge port.

[0018] 2. The crushed material falls onto the screening plate. Material that meets the size requirements passes through the screening holes, while material that does not meet the size requirements remains on the screening plate. The rotating shaft drives the crushing roller and the round shaft to rotate, causing the power gear to mesh with the gear and drive the round shaft to rotate. The round shaft then drives the grinding roller to rotate, using the grinding roller to further crush the material on the screening plate, converting it into material that meets the size requirements for passing through the screening holes. Compared to existing technologies, this method eliminates the need for manual collection and transfer of material that does not meet the size requirements, and it can directly and automatically crush material that does not meet the size requirements, making it highly practical.

[0019] 3. During the rotation of the shaft, the brush layer also rotates synchronously, which can drive the crushed material on the surface of the screening plate to change position; in addition, during the rotation of the shaft, the grinding roller also rotates synchronously, and the grinding roller can also rotate on its own, so as to grind the crushed material in different positions, that is, to more comprehensively grind all the crushed material and improve the utilization rate of the crushed material.

[0020] 4. During the rotation of the grinding roller, the circular arc cam set coaxially with the grinding roller rotates. The cylindrical cam drives the movable block to move in the radial direction of the rotating shaft through the curved groove and the adjusting block. The movable block drives the brush layer to move synchronously. The brush layer can drive the crushed material on the surface of the screening plate to change position, so as to more comprehensively crush all the crushed material and improve the utilization rate of the crushed material.

[0021] 5. During the rotation of the grinding roller, the cam body, which is coaxially set with the grinding roller, rotates. The cam body drives the screening plate to move vertically back and forth through the third ring groove, the slider, the two friction blocks on the slider, and the ring block, thereby realizing the vibration of the screening plate. On the one hand, it can change the position of the crushed material on the surface of the screening plate, promoting more comprehensive crushing treatment. On the other hand, the vibration can prevent the screening holes from clogging, ensuring continuous and effective screening of the crushed material and improving the utilization rate of the crushed material.

[0022] 6. The screening plate can reciprocate vertically. When the screening plate moves downward, it drives the first wedge to move downward, causing the first wedge to separate from the third wedge. At the same time, the second wedge presses down on the fourth wedge, causing the radial block to move closer to the rotating shaft. The elastic block moves synchronously, allowing the inclined elastic block to extend into the screening hole. When the screening plate moves upward, the second wedge moves away from the fourth wedge, while the first wedge presses up on the third wedge, causing the radial block to move away from the rotating shaft. The elastic block moves synchronously, cooperating with the upward-moving screening plate, causing the free end of the elastic block to move out of the screening hole. Therefore, the movement of the elastic block in and out of the screening hole achieves cleaning, avoids clogging of the screening hole, ensures continuous and effective screening of the crushed material, and improves the utilization rate of the crushed material.

[0023] 7. As the radial block approaches the rotating shaft, it drives the elastic block to move synchronously, allowing the free end of the elastic block to extend into the screening hole for cleaning. Furthermore, as the radial block approaches the rotating shaft, due to the inclined setting of the elastic block, the free end of the elastic block initially abuts against the inner wall of the screening hole. As the radial block continues to approach the rotating shaft, the free end of the elastic block is obstructed by the inner wall of the screening hole and bends upward. Combined with the downward-moving screening plate, this allows the elastic block to penetrate the screening hole to a greater depth, thus enabling better cleaning of the screening hole and a better cleaning effect.

[0024] 8. The wall blocks and support arms can support the radial blocks, thereby ensuring the stability of the radial block's movement. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an embodiment of a pulverizing device for three-way catalyst raw materials according to the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 for Figure 1 A top-down view of the internal structure of the pulverizing chamber;

[0028] Figure 4 for Figure 1 Schematic diagram of the internal structure of the middle cylinder;

[0029] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0030] Figure 6 for Figure 4 Schematic diagram of a partial internal structure of the middle cylinder;

[0031] Figure 7 for Figure 6 Enlarged view at point C;

[0032] Figure 8 for Figure 5 A partial structural diagram of the cam body and slider;

[0033] Figure 9 for Figure 8 The main view. Detailed Implementation

[0034] The following detailed description illustrates the specific implementation methods:

[0035] The reference numerals in the accompanying drawings include: crushing box 10, feed inlet 11, crushing gear 12, crushing roller 13, cylinder 20, sieve plate 21, vertical groove 22, vertical block 23, sieve hole 24, round hole 25, rotating shaft 30, second motor 31, fixed plate 32, bottom plate 33, grinding roller 34, gear ring 35, power gear 36, round shaft 37, first annular groove 40, cam body 41, annular block 42, second annular groove 43, slider 44, friction block 45, third annular groove 46, fourth annular groove 461, side block 462, movable block 50, brush layer 51, cylindrical cam 52, adjusting block 53, radial groove 60, radial block 61, top block 62, elastic block 63, first wedge 70, second wedge 71, third wedge 72, fourth wedge 73, wall block 80, and support arm 81.

[0036] Example

[0037] The basics are as follows: Figure 1 As shown: A pulverizing device for three-way catalyst raw materials includes a pulverizing chamber 10 and a pulverizing assembly. The top of the pulverizing chamber 10 has a feed inlet 11; as shown in the attached diagram. Figure 3As shown, the crushing assembly is located inside the crushing chamber 10. The crushing assembly includes a first motor and two crushing shafts rotatably connected to the crushing chamber 10. The first motor is fixedly connected to the inner wall of the crushing chamber 10. The output shaft of the first motor is coaxially connected to a single crushing shaft. Crushing gears 12 and crushing rollers 13 are coaxially connected to the crushing shafts. The crushing gears 12 on the two crushing shafts mesh, and the two crushing rollers 13 rotate in opposite directions. The two crushing rollers 13 are located directly below the feed inlet 11.

[0038] As attached Figure 1 As shown, the bottom of the crushing box 10 is connected to a cylinder 20, and the bottom of the cylinder 20 has a discharge port; the connection between the crushing box 10 and the cylinder 20 is located directly below the two crushing rollers 13, allowing the crushed material to pass through the connection and enter the cylinder 20; as shown in the attached figure. Figure 4 As shown, a screening plate 21 is connected inside the cylinder 20. The screening plate 21 is cylindrical. Specifically, the screening plate 21 is in frictional contact with the inner wall of the cylinder 20. Four vertical grooves 22 are opened circumferentially on the inner wall of the cylinder 20. Vertical blocks 23 are slidably connected in the vertical grooves 22 and are fixedly connected to the screening plate 21.

[0039] As attached Figure 4 As shown, the sieve plate 21 is provided with a hole group, which includes four holes arranged circumferentially on the sieve plate 21. Each hole includes six sieve holes 24 opened on the sieve plate 21 in the radial direction of the rotating shaft 30. A circular hole 25 is opened in the middle of the sieve plate 21. A rotating shaft 30 is rotatably connected to the center position inside the cylinder 20. The rotating shaft 30 passes through the circular hole 25, and the diameter of the rotating shaft 30 is smaller than the diameter of the circular hole 25. It also includes a drive assembly for driving the rotating shaft 30 to rotate. The drive assembly is a second motor 31. The second motor 31 is fixedly connected to the cylinder 20, and the output shaft of the second motor 31 is coaxially connected to the rotating shaft 30.

[0040] As attached Figure 4 As shown, the rotating shaft 30 is circumferentially fixed with three fixed plates 32, and the bottom sides of the fixed plates 32 are fixed with base plates 33. A round shaft 37 is rotatably connected to the base plate 33, and a grinding roller 34 is coaxially connected to the round shaft 37. The grinding roller 34 is located above the screening plate 21. It also includes a power assembly for driving the round shaft 37 to rotate. The power assembly includes a gear ring 35 fixed to the inner wall of the cylinder 20 and a power gear 36 coaxially connected to the round shaft 37. The power gear 36 meshes with the gear ring 35.

[0041] As attached Figure 4 and attached Figure 5As shown, the screening plate 21 can reciprocate vertically within the cylinder 20. It also includes a linkage assembly for driving the screening plate 21 to reciprocate vertically. The linkage assembly includes a first annular groove 40 formed on the screening plate 21 and a cam body 41 coaxially connected to the circular shaft 37. The diameter of the first annular groove 40 is larger than the diameter of the circular hole 25. An annular block 42 is fixedly connected to the first annular groove 40. A second annular groove 43 is formed on the annular block 42. Three sliders 44 are slidably connected to the second annular groove 43. Each slider 44 is fixedly connected to both sides of the annular block 42. There is a friction block 45 that abuts against the annular block 42, and the two are in frictional contact. That is, the upper friction block 45 on the slider 44 abuts against the top of the annular block, and the lower friction block 45 on the slider 44 abuts against the bottom of the annular block. The width of the friction block 45 is greater than the width of the second annular groove 43, and both friction blocks 45 on the slider 44 can move within the first annular groove 40. A third annular groove 46 is opened on the cam body 41, and the end of the slider 44 away from the second annular groove 43 is slidably connected to the third annular groove 46. Specifically, as shown in the attached figure. Figure 8 and attached Figure 9 As shown, a fourth annular groove 461 is opened on both sides of the third annular groove 46. A side block 462 is slidably connected in the fourth annular groove 461. The side block 462 is fixedly connected to the slider 44, and the slider 44 can move relative to the third annular groove 46.

[0042] As attached Figure 4 As shown, it also includes three movable blocks 50. The movable blocks 50 are located between the fixed plate 32 and the grinding roller 34 in the vertical direction. A bristle layer 51 that abuts against the top of the screening plate 21 is fixedly connected to the movable block 50. The bristle layer 51 includes a number of bristles. One end of the bristles is fixedly connected to the movable plate, and the other end of the movable plate abuts against the screening plate 21. It also includes an adjustment assembly for driving the movable block 50 to move in the radial direction of the rotating shaft 30. The adjustment assembly includes a cylindrical cam 52 and an adjustment block 53 that are coaxially connected to the round shaft 37. The cylindrical cam 52 has a curved groove. The adjustment block 53 is slidably connected to the bottom block. The adjustment block 53 moves in the axial direction of the rotating shaft 30. One end of the adjustment block 53 is slidably connected to the curved groove, and the other end of the adjustment block 53 is fixedly connected to the movable block 50.

[0043] As attached Figure 2 Appendix Figure 6 and attached Figure 7As shown, four radial grooves 60 are circumferentially opened on the inner wall of the cylinder 20. Radial blocks 61 are slidably connected in the radial grooves 60, and the radial blocks 61 move in the radial direction along the rotating shaft 30. The radial blocks 61 are located below the screening plate 21. Six top blocks 62 are fixedly connected to the radial blocks 61, and inclined elastic blocks 63 are fixedly connected to the top blocks 62. The elastic blocks 63 are inclined downward from the center of the cylinder 20 towards the inner wall of the cylinder 20. The height of the end of the elastic block 63 near the center of the cylinder 20 is greater than the height of the end of the elastic block 63 near the inner wall of the cylinder 20. That is, the distance between the upper end of the elastic block 63 and the center of the cylinder 20 is less than the distance between the lower end of the elastic block 63 and the center of the cylinder 20. The elastic block 63 is a spring. The screen plate 21 has a screen hole 24 located on the movement trajectory of the elastic block 63. The free end of the elastic block 63 can enter and exit the screen hole 24. The elastic block 63 is located between two adjacent screen holes 24 along the radial direction of the rotating shaft 30. The screen plate 21 also includes a power assembly that drives multiple radial blocks 61 to move as it moves vertically. The power assembly includes four first wedges 70 fixed to the bottom of the screen plate 21, a second wedge 71 fixed to the vertical block 23, a third wedge 72 fixed to one end of the radial block 61, and a fourth wedge 73 fixed to the other end of the radial block 61. The first wedge 70 and the third wedge 72 abut against each other, and the fourth wedge 73 is located on the movement trajectory of the second wedge 71.

[0044] The specific implementation process is as follows:

[0045] In use, the first motor is started, and the output shaft of the first motor drives a single crushing shaft to rotate. The two crushing gears mesh, causing the two crushing shafts to rotate synchronously, which in turn drives the two crushing rollers 13 to rotate synchronously, and the two crushing rollers 13 rotate in opposite directions. The raw material is introduced into the crushing box 10 through the feed inlet 11, so that the raw material falls between the two crushing rollers 13. The crushing rollers 13 crush the raw material to obtain crushed material. The crushed material enters the cylinder 20 from the connection between the crushing box 10 and the cylinder 20, so that the crushed material falls onto the screening plate 21. The crushed material is screened through the screening holes 24, so that the crushed material with qualified size passes through the screening holes 24 and is discharged from the discharge port, while the crushed material with unqualified size remains on the surface of the screening plate 21. Therefore, for the crushed material with qualified size, no personnel are required to screen it and it can be directly discharged from the discharge port, so the method of obtaining crushed material with qualified size is simpler.

[0046] The second motor 31 is started, and the output shaft of the second motor 31 drives the rotating shaft 30 to rotate. The rotating shaft 30 drives the round shaft 37, grinding roller 34 and power gear 36 to rotate through the fixed plate 32 and the bottom plate 33. The power gear 36 meshes with the gear ring 35 and rotates. The power gear 36 drives the round shaft 37 and grinding roller 34 to rotate. The grinding roller 34 and the surface of the screen plate 21 are further crushed, so that the crushed material with qualified size can pass through the screen hole 24 and be discharged from the outlet. There is no need to manually collect and transfer the crushed material with unqualified size, which reduces the operation process, improves the work efficiency, and also improves the utilization rate of crushed material.

[0047] During the rotation of the rotating shaft 30, the rotating shaft 30 drives the brush layer 51 to rotate through the fixed plate 32, the bottom plate 33, the adjusting block 53, and the movable block 50. The brush layer 51 can drive the crushed material on the surface of the screening plate 21 to change position. In addition, during the rotation of the rotating shaft 30, the grinding roller 34 also rotates synchronously. At the same time, the grinding roller 34 can rotate on its own axis, so as to grind the crushed material at different positions, that is, to more comprehensively grind all the crushed material.

[0048] During the rotation of the circular shaft 37, the circular shaft 37 drives the cylindrical cam 52 to rotate. The cylindrical cam 52 drives the movable block 50 to move in the radial direction of the rotating shaft 30 through the curved groove and the adjusting block 53. The movable block 50 drives the brush layer 51 to move synchronously. The brush layer 51 can drive the crushed material on the surface of the screening plate 21 to change position, so that all crushed materials can be crushed more comprehensively.

[0049] During the rotation of the rotating shaft 30, the rotating shaft 30 drives the circular shaft 37 to rotate through the fixed plate 32 and the base plate 33. The circular shaft 37 drives the slider 44 to slide in the second ring groove 43 through the cam body 41, the third ring groove 46, the fourth ring groove 461, and the side block 462. At the same time, the two friction blocks 45 on the slider 44 rub against the upper and lower sides of the ring block 42 respectively. During the rotation of the circular shaft 37, the circular shaft 37 drives the cam body 41 to rotate. The cam body 41 drives the screening plate 21 to move vertically and reciprocally through the third ring groove 46, the fourth ring groove 461, the side block 462, the slider 44, the two friction blocks 45 on the slider 44, and the ring block 42. This achieves the vibration of the screening plate 21. On the one hand, it can change the position of the crushed material on the surface of the screening plate 21, promoting more comprehensive crushing treatment. On the other hand, the vibration can prevent the screening holes 24 from being blocked, ensuring that the crushed material can be continuously and effectively screened.

[0050] During the vertical reciprocating motion of the screening plate 21, the screening plate 21 drives the vertical block 23 to reciprocate vertically within the vertical groove 22. When the screening plate 21 moves downwards, it drives the first wedge 70 downwards, causing the first wedge 70 to separate from the third wedge 72. Simultaneously, the screening plate 21, through the vertical block 23, drives the second wedge 71 to press against the fourth wedge 73, causing the radial block 61 to move closer to the rotating shaft 30. The radial block 61, through the top block 62, drives the elastic block 63 to move synchronously, causing the inclined elastic block 63 to extend into the screening hole 24. Furthermore, initially, the free end of the elastic block 63, upon entering the screening hole 24, abuts against the inner wall of the screening hole 24. As the radial block 61 approaches the rotating shaft 30, the free end of the elastic block 63 is obstructed by the inner wall of the screening hole 24 and bends upwards. The screen plate 21 moves downwards, and the elastic block 63 cleans the screen holes 24 to prevent them from clogging. When the screen plate 21 moves upwards, the screen plate 21 drives the second wedge 71 away from the fourth wedge 73 via the vertical block 23. At the same time, the screen plate 21 drives the first wedge 70 upwards, so that the first wedge 70 squeezes the third wedge 72 and drives the radial block 61 away from the rotating shaft 30. The radial block 61 drives the elastic block 63 to move synchronously via the top block 62. With the upward movement of the screen plate 21, the free end of the elastic block 63 moves out of the screen hole 24 and returns to its original state. Finally, the elastic block 63 is positioned between two adjacent screen holes 24 in the radial direction of the rotating shaft 30 so that the crushed material passes through the screen hole 24 and falls to the bottom of the cylinder 20.

[0051] In this embodiment, as shown in the appendix Figure 6 As shown, four wall blocks 80 are circumferentially fixed to the inner wall of the cylinder 20, and the wall blocks 80 abut against the radial block 61; the wall blocks 80 can support the radial block 61, thereby ensuring the stability of the movement of the radial block 61.

[0052] In this embodiment, as shown in the appendix Figure 6 As shown, four support arms 81 are circumferentially fixed to the inner wall of the cylinder 20. The support arms 81 are inclined and fixed to the wall block 80. The support arms 81 can support the wall block 80, and thus support the radial block 61, thereby ensuring the stability of the movement of the radial block 61.

[0053] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pulverizing device for three-way catalyst raw materials, comprising a pulverizing chamber and a pulverizing assembly, wherein the pulverizing chamber is provided with a feed inlet, and the pulverizing assembly is disposed inside the pulverizing chamber, characterized in that: The bottom of the crushing box is connected to a cylinder, and the bottom of the cylinder has a discharge port. A screening plate is connected inside the cylinder, and the screening plate has a group of holes. A circular hole is provided in the middle of the screening plate. A rotating shaft is rotatably connected inside the cylinder, and the rotating shaft passes through the circular hole. The diameter of the rotating shaft is smaller than the diameter of the circular hole. Several fixing plates are provided around the rotating shaft, and a base plate is provided at the bottom of the fixing plates. A circular shaft is rotatably connected to the base plate, and a grinding roller is coaxially connected to the circular shaft. The grinding roller is located above the screening plate. The box also includes a drive assembly for driving the rotating shaft to rotate and a power assembly for driving the circular shaft to rotate.

2. The pulverizing equipment for three-way catalyst raw materials according to claim 1, characterized in that: The power assembly includes a gear ring fixed to the inner wall of the cylinder and a power gear coaxially connected to the round shaft, with the power gear meshing with the gear ring.

3. The pulverizing equipment for three-way catalyst raw materials according to claim 2, characterized in that: The screening plate is in frictional contact with the inner wall of the cylinder; the hole group includes several holes arranged circumferentially on the screening plate, and the holes include several screening holes opened on the screening plate in the radial direction along the rotating shaft; the inner wall of the cylinder is provided with several vertical grooves circumferentially, and vertical blocks are slidably connected in the vertical grooves, and the vertical blocks are fixedly connected to the screening plate; it also includes a linkage component for driving the screening plate to reciprocate vertically.

4. The pulverizing equipment for three-way catalyst raw materials according to claim 3, characterized in that: The linkage component includes a first annular groove formed on the screening plate and a cam body coaxially connected to the round shaft. An annular block is provided on the first annular groove, and a second annular groove is provided on the annular block. Several sliders are slidably connected in the second annular groove. Friction blocks are provided on both sides of the annular block on the sliders, and the friction blocks abut against the annular block. A third annular groove is provided on the cam body, and the end of the slider away from the second annular groove is slidably connected to the third annular groove.

5. The pulverizing equipment for three-way catalyst raw materials according to claim 4, characterized in that: It also includes several movable blocks, which are located between the fixed plate and the grinding roller. The movable blocks are provided with a brush layer that abuts against the top of the screening plate. It also includes an adjustment component for driving the movable blocks to move in the radial direction of the rotating shaft.

6. The pulverizing equipment for three-way catalyst raw materials according to claim 5, characterized in that: The adjustment assembly includes a cylindrical cam coaxially connected to the circular shaft and an adjustment block. The cylindrical cam is provided with a curved groove. The adjustment block is slidably connected to the bottom block. One end of the adjustment block is slidably connected to the curved groove, and the other end of the adjustment block is fixedly connected to the movable block.

7. The pulverizing equipment for three-way catalyst raw materials according to claim 6, characterized in that: The inner wall of the cylinder is provided with several radial grooves in the circumferential direction. Radial blocks are slidably connected in the radial grooves and move along the radial direction of the rotating shaft. The radial blocks are located below the screening plate and are provided with several top blocks. The top blocks are provided with inclined elastic blocks and the screening holes are located on the movement trajectory of the elastic blocks. The elastic blocks are located between two adjacent screening holes along the radial direction of the rotating shaft. The cylinder also includes a power component that drives multiple radial blocks to move as the screening plate moves vertically.

8. The pulverizing equipment for three-way catalyst raw materials according to claim 7, characterized in that: The power assembly includes a number of first wedges circumferentially fixed to the bottom of the screening plate, a second wedge fixed to the vertical block, a third wedge fixed to one end of the radial block, and a fourth wedge fixed to the other end of the radial block. The first wedges abut against the third wedges, and the fourth wedge is located on the movement trajectory of the second wedges.

9. The pulverizing equipment for three-way catalyst raw materials according to claim 8, characterized in that: The inner wall of the cylinder is provided with several wall blocks in the circumferential direction, and the wall blocks abut against the radial blocks.

10. The pulverizing equipment for three-way catalyst raw materials according to claim 9, characterized in that: The inner wall of the cylinder is provided with several support arms in the circumferential direction, and the support arms are fixedly connected to the wall block.

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