Grinding equipment for preparing molding powder with high heat resistance and wear resistance

Abstract

The invention discloses grinding equipment for preparing high-heat-resistant and wear-resistant molding powder, which is applied to the technical field of molding powder grinding for energy-saving motors and comprises a support, a stirring mechanism is arranged above the support, and a grinding mechanism is arranged below the support; the grinding mechanism comprises a cleaning assembly, a grinding assembly and a discharging assembly, the grinding assembly comprises a first mounting barrel, a second mounting barrel and a second motor which are fixed to the bottom of the support, the second mounting barrel is fixed to the upper portion of the first mounting barrel, and a grinding disc and a fixing shaft are arranged between the second mounting barrel and the first mounting barrel; wherein a plurality of filtering holes are evenly formed in the grinding disc, the fixing shaft is arranged along the center line of the grinding disc and fixedly connected with the grinding disc, a positioning shaft is fixed to the interior of a second mounting barrel, two sets of grinding rollers are connected to the positioning shaft through bearings, and a second motor is connected with the fixing shaft through a speed reducer. According to the grinding device, the grinding quality can be guaranteed while the working efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding molding powder for energy-saving motors, in particular to grinding equipment for preparing highly heat-resistant and wear-resistant plastic powder. Background Art

[0002] When the energy-saving motor is running efficiently, the high current density or insufficient heat dissipation may cause local temperature rise (such as close to 100-200℃). In order to increase the service life of the energy-saving motor, high heat-resistant plastic powder will be coated on the bearings and gearboxes, which can directly reduce the friction between metals and reduce the wear rate.

[0003] Therefore, the manufacturing process requirements for high heat-resistant and wear-resistant plastic powder are relatively high, especially the grinding and crushing steps. The existing grinding equipment cannot dry the raw materials simultaneously, which affects the grinding and discharging efficiency. Therefore, it is necessary to provide a grinding equipment for preparing high heat-resistant and wear-resistant plastic powder, which can dry during grinding, improve work efficiency and ensure grinding quality. Summary of the invention

[0004] The object of the present invention is to provide a grinding device for preparing highly heat-resistant and wear-resistant plastic powder to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A grinding device for preparing highly heat-resistant and wear-resistant plastic powder, comprising a bracket, a stirring mechanism is arranged above the bracket, and a grinding mechanism is arranged below the bracket; The grinding mechanism comprises a cleaning component, a grinding component and a discharging component, wherein: The grinding assembly includes a mounting barrel 1, a mounting barrel 2 and a second motor fixed at the bottom of the bracket, the mounting barrel 2 is fixed above the mounting barrel 1, and a grinding disc and a fixed shaft are arranged between the mounting barrel 2 and the mounting barrel 1, wherein: A plurality of filter holes are evenly opened inside the grinding disc, the fixed shaft is arranged along the center line of the grinding disc and is fixedly connected to the grinding disc, a positioning shaft is fixed inside the second mounting barrel, two groups of grinding rollers are connected to the bearings on the positioning shaft, and the second motor is connected to the fixed shaft through a reducer; The cleaning assembly includes a lifting rod, sliding rods are fixed on both sides of the lifting rod, the sliding rod is connected to the mounting barrel through a linear drive, a plurality of brushes are fixed on the top of the lifting rod, and an air cavity is opened inside the lifting rod.

[0006] The linear drive is started by the control system to make the brush on the lifting rod contact the filter holes on the grinding disc. Since the grinding disc rotates along the fixed axis, the contact area between the brush and the grinding disc can be increased. At the same time, the second pump body pumps the gas in the stirring shell into the air cavity to heat the lifting rod, and then transfers the heat to the brush, so that the temperature of the brush becomes high and the temperature is transferred to the granular raw materials attached to the filter holes to dry them. The dried granular raw materials will not adhere to the filter holes. The dried granular raw materials can be cleaned by the brush and dropped into the installation barrel to prevent the granular raw materials from adhering to the filter holes due to high humidity, thereby affecting the filtering effect. According to the above technical solution, the end of the brush close to the lifting rod is made of hard material, and the end of the brush away from the lifting rod is made of soft material.

[0007] According to the above technical solution, the discharging assembly includes a supporting plate 2 fixed on one side of a mounting barrel, an elastic plate is fixed on the surface of the supporting plate 2, a gap is arranged between the elastic plate and the supporting plate 2, two groups of elastic telescopic rods are fixed between the elastic plate and the supporting plate 2, two groups of pressure sensors are fixed on the bottom of the elastic plate, and the elastic plate and the supporting plate 2 are both arranged as inclined surfaces.

[0008] According to the above technical solution, the stirring mechanism includes a feeding component, a crushing component and a material control component, wherein: The feeding assembly includes a cover shell fixed on the top of the bracket, a feed hopper and a bearing plate 1, the bearing plate 1 and the feed hopper are fixed to one side of the cover shell, the cover shell and the bearing plate 1 penetrate each other, the feed hopper is arranged above the bearing plate 1, and the internal bearing of the cover shell is connected with a rotating blade; The pulverizing assembly includes a stirring shell fixed in the middle of the bracket and a motor belt drive group fixed on the bracket, a connecting channel is fixedly connected between the stirring shell and the cover shell, and a cover plate is arranged on the top of the stirring shell; The inner bearing of the stirring shell is connected with a stirring blade, and the stirring blade is connected with the rotating blade through a motor belt drive group.

[0009] According to the above technical solution, the material control assembly includes a connecting sleeve and a first motor, wherein the connecting sleeve is fixed to the bottom of the stirring housing and is located above the grinding mechanism; The first motor is fixed to one side of the connecting sleeve, the internal bearing of the connecting sleeve is connected with a baffle, and the first motor is fixedly connected to the connecting shaft of the baffle through a bevel gear set.

[0010] According to the above technical solution, the recovery mechanism includes a material recovery component and a gas recovery component, wherein: The material recovery component includes a recovery pipe, which is connected between the mounting barrel 1 and the stirring shell. The connection between the recovery pipe and the mounting barrel 1 is arranged above the grinding disc, and the recovery pipe is connected to the first pump body.

[0011] According to the above technical solution, the gas recovery component includes an air pipe, the air pipe is connected between the lifting rod and the stirring shell, the air pipe is communicated with the air cavity, and the second pump body is fixedly connected to the air pipe.

[0012] According to the above technical solution, the installation barrel is provided with a long slot near the lifting rod, and the lifting rod moves up and down no more than the length of the long slot; The air pipe and the outside of the mounting barrel are fixed with a rubber cloth.

[0013] According to the above technical solution, the cover plate is made of transparent glass, and a temperature sensor is fixed to the inner wall of the stirring shell.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a cleaning component and a gas recovery component, pumps the gas in the stirring shell into the air cavity through the second pump body, heats the lifting rod, and then transfers the heat to the brush, so that the temperature of the brush becomes high and thus transfers the temperature to the granular raw materials attached to the filter holes, drying them. The dried granular raw materials will not adhere to the filter holes, and the dried granular raw materials can be cleaned by the brush and dropped into the installation barrel, thereby preventing the granular raw materials from adhering to the filter holes due to high humidity, thereby affecting the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a front schematic diagram of the overall structure of the present invention; Figure 2 It is a side schematic diagram of the overall structure of the present invention; Figure 3 It is a top schematic diagram of the overall structure of the present invention; Figure 4 The present invention Figure 2 A magnified schematic diagram of region A; Figure 5 is a three-dimensional schematic diagram of the grinding mechanism of the present invention; Figure 6 is a side schematic diagram of the grinding mechanism of the present invention; Figure 7 is a front cross-sectional schematic diagram of the grinding mechanism of the present invention; Figure 8 The present invention Figure 6A local enlarged schematic diagram of area B; Fig. 9 The present invention Figure 7 A local enlarged schematic diagram of the C region; Fig.10 It is a schematic cross-sectional view of two side surfaces of the load-bearing plate of the present invention; Fig.11 is a two-dimensional cross-sectional schematic diagram of a cleaning assembly of the present invention; Fig.12 It is a pipeline schematic diagram of the present invention; Fig.13 The material control component of the present invention is schematically shown Figure 1 ; Fig.14 The material control component of the present invention is schematically shown Figure 2 ; In the figure: 1. bracket; 2. cover plate; 3. stirring shell; 4. motor belt drive group; 5. second motor; 6. cover shell; 7. hopper; 8. connecting channel; 9. blower; 10. stirring blade; 11. recovery pipe; 12. first pump body; 13. installation barrel 2; 14. installation barrel 1; 15. grinding disc; 16. filter hole; 17. positioning shaft; 18. grinding roller; 19. fixed shaft; 20. bearing plate 2; 21. elastic plate; 22. air pipe; 23. long groove; 24. rubber cloth; 25. sliding rod; 26. brush; 27. pressure sensor; 28. elastic telescopic rod; 29. ​​gap; 30. air cavity; 31. bearing plate 1; 32. connecting sleeve; 33. first motor; 34. baffle; 35. second pump body; 36. lifting rod; 37. temperature sensor. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-14 The present invention provides a technical solution: a grinding device for preparing high heat-resistant and wear-resistant plastic powder, including a bracket 1 and a control system. A stirring mechanism is arranged above the bracket 1, a grinding mechanism is arranged below the bracket 1, and a recovery mechanism is arranged between the stirring mechanism and the grinding mechanism. The raw material is initially crushed by the stirring mechanism and then falls into the grinding mechanism to be ground into particles.

[0018] The stirring mechanism includes a feeding component, a crushing component and a material controlling component. The feeding component includes a cover shell 6 fixed on the top of the bracket 1, a hopper 7 and a carrying plate 31. The carrying plate 31 and the hopper 7 are fixed on one side of the cover shell 6. The cover shell 6 and the carrying plate 31 penetrate each other. The hopper 7 is arranged above the carrying plate 31. The internal bearing of the cover shell 6 is connected with a rotating blade (not shown in the figure). The raw material is poured into the carrying plate 31 through the hopper 7. Since the bottom surface of the carrying plate 31 is set as an inclined surface, the raw material enters the interior of the cover shell 6 through the inclined surface, and the raw material is transported to the crushing component through the rotating blade.

[0019] The crushing assembly includes a stirring shell 3 fixed in the middle of the bracket 1 and a motor belt drive group 4 fixed on the bracket 1. A connecting channel 8 is fixedly connected between the stirring shell 3 and the cover shell 6. A cover plate 2 is arranged on the top of the stirring shell 3 to prevent the raw materials from flying out of the stirring shell 3. The cover plate 2 is made of transparent glass. A temperature sensor 37 is fixed on the inner wall of the stirring shell 3. The internal bearing of the stirring shell 3 is connected to a stirring blade 10, and the stirring blade 10 is connected to the rotating blade through a motor belt drive group 4. By starting the motor belt drive group 4, the stirring blade 10 and the rotating blade can be driven to work synchronously. When the stirring blade 10 is working, the raw materials in the stirring shell 3 can be stirred. The motor belt drive group 4 is a prior art and will not be described in detail here. A blower 9 is fixed to the outside of the stirring shell 3, and an electric heating module (not shown in the figure) is provided at the connection between the blower 9 and the stirring shell 3. The hot air is blown to the inside of the stirring shell 3 by the blower 9, so that the raw materials in the stirring shell 3 are better dispersed, and the crushing effect can be enhanced. At the same time, the high-temperature gas can dry the raw materials and remove moisture from the raw materials.

[0020] The material control component includes a connecting sleeve 32 and a first motor 33. The connecting sleeve 32 is fixed to the bottom of the stirring shell 3 and is located above the grinding mechanism. The first motor 33 is fixed to one side of the connecting sleeve 32. The internal bearing of the connecting sleeve 32 is connected to a baffle 34. The first motor 33 is fixedly connected to the connecting shaft of the baffle 34 through a bevel gear set. When the first motor 33 is started, the baffle 34 is driven to flip in the connecting sleeve 32 through the bevel gear set to adjust the size of the outlet of the connecting sleeve 32, so as to accurately control the delivery flow of the raw material through the outlet to the grinding mechanism.

[0021] The grinding mechanism includes a cleaning component, a grinding component and a discharging component. The cleaning component is arranged inside the grinding component. The grinding component includes a mounting barrel 14 fixed at the bottom of the bracket 1, a mounting barrel 2 13 and a second motor 5. The mounting barrel 2 13 is fixed above the mounting barrel 14. A grinding disc 15 and a fixed shaft 19 are arranged between the mounting barrel 2 13 and the mounting barrel 14. A plurality of filter holes 16 are evenly opened inside the grinding disc 15. The fixed shaft 19 is arranged along the center line of the grinding disc 15 and is Fixedly connected, a positioning shaft 17 is fixed inside the mounting barrel 13, and two groups of grinding rollers 18 are connected to the bearings on the positioning shaft 17. The second motor 5 is connected to the fixed shaft 19 through a reducer. When the second motor 5 is started, the fixed shaft 19 is driven to rotate along the axis by the reducer, thereby driving the grinding disc 15 to rotate. When the crushed raw materials fall onto the grinding disc 15, the grinding disc 15 and the two groups of grinding rollers 18 cooperate to grind the crushed raw materials into granules, and then fall into the mounting barrel 14.

[0022] The discharging assembly includes a supporting plate 20 fixed on one side of the mounting barrel 14, an elastic plate 21 is fixed on the surface of the supporting plate 20, a gap 29 is set between the elastic plate 21 and the supporting plate 20, two groups of elastic telescopic rods 28 are fixed between the elastic plate 21 and the supporting plate 20, two groups of pressure sensors 27 are fixed to the bottom of the elastic plate 21, the elastic plate 21 and the supporting plate 20 are both set as inclined surfaces, and the granular material is transported to the outside through the inclined surface of the supporting plate 20. When the granular material passes through the elastic plate 21, the elastic telescopic rod 28 is compressed due to gravity, so that the elastic plate 21 is pressed toward the supporting plate 20, and the pressure value is detected by the pressure sensor 27 contacting the bottom surface of the supporting plate 20 to analyze the amount of granular material passing through the supporting plate 20.

[0023] The cleaning assembly includes a lifting rod 36, on both sides of which sliding rods 25 are fixed. The sliding rods 25 are connected to the mounting barrel 14 through a linear drive. A plurality of brushes 26 are fixed to the top of the lifting rod 36. The two groups of sliding rods 25 are controlled by starting the linear drive to drive the lifting rod 36 to move up and down along the surface of the mounting barrel 14, so that the distance between the brush 26 and the grinding disc 15 can be controlled. An air cavity 30 is provided inside the lifting rod 36, and both the lifting rod 36 and the brush 26 are made of heat-conducting materials.

[0024] One end of the brush 26 close to the lifting rod 36 is made of hard material, and one end of the brush 26 away from the lifting rod 36 is made of soft material.

[0025] The recovery mechanism includes a material recovery component and a gas recovery component. The material recovery component includes a recovery pipe 11. The recovery pipe 11 is connected between the mounting barrel 14 and the stirring shell 3. The connection between the recovery pipe 11 and the mounting barrel 14 is arranged above the grinding disc 15. The recovery pipe 11 is connected to a first pump body 12. When the first pump body 12 is started, the raw materials remaining on the grinding disc 15 are pumped into the stirring shell 3 through the recovery pipe 11 for secondary crushing.

[0026] The gas recovery assembly includes an air pipe 22, which is connected between the lifting rod 36 and the stirring shell 3, and is communicated with the air cavity 30. A second pump body 35 is fixedly connected to the air pipe 22. Starting the second pump body 35 can pump the hot air in the stirring shell 3 into the air cavity 30 through the air pipe 22, so that the lifting rod 36 and the brush 26 are quickly heated.

[0027] It should be added that a long slot 23 is provided near the lifting rod 36 in the mounting barrel 14, and the distance that the lifting rod 36 moves up and down does not exceed the length of the long slot 23. The long slot 23 is provided to facilitate the air pipe 22 to move up and down with the lifting rod 36. A rubber cloth 24 is fixed to the outside of the air pipe 22 and the mounting barrel 14 to dynamically seal the long slot 23 to prevent granular materials from escaping from the long slot 23.

[0028] The first motor 33, the pressure sensor 27, the temperature sensor 37, the second pump body 35, the electric heating module and the linear drive and control system are electrically connected. Example

[0029] In this embodiment, the discharge amount of the granular raw material is determined to analyze whether the grinding disc 15 is blocked, thereby increasing the discharge amount of the granular raw material and ensuring the discharge efficiency of the grinding equipment; The first pump body 12 and the second pump body 35 may be air pumps.

[0030] Specifically, the raw material is poured into the cover shell 6 from the feed hopper 7, and the raw material is transmitted to the mixing shell 3 by rotating the rotating blades, the mixing blades 10 are controlled to start to crush the raw material, and the blower 9 and the electric heating module are started at the same time, so that the blower 9 blows hot air into the mixing shell 3, and the raw material can be dried and heated when crushing the raw material, and the moisture in the raw material is removed to improve the crushing quality; the crushed raw material falls into the mounting barrel 2 13 through the connecting sleeve 32, and the second motor 5 is started to control the grinding disc 15 to grind the raw material into granules, and the granular raw material falls into the mounting barrel 1 14 through the filter hole 16, and the granular raw material is then transported to the outside along with the elastic plate 21. When the granular raw material passes through the elastic plate 21, the elastic telescopic rod 28 is compressed by its own gravity, so that the elastic plate 21 contacts the direction close to the supporting plate 20, so the pressure sensor 27 contacts the bottom surface of the supporting plate 20, and the pressure signal generated during the contact is transmitted to the control system.

[0031] The staff sets the range of pressure values ​​under normal circumstances to a in the control system. When the pressure value is lower than a, it indicates that the output of the granular raw material is reduced, indicating that the filter hole 16 is blocked. The linear drive is started through the control system to make the brush 26 on the lifting rod 36 contact the filter hole 16 on the grinding disc 15. Since the grinding disc 15 rotates along the fixed axis 19, the contact area between the brush 26 and the grinding disc 15 can be increased. At the same time, the second pump body 35 pumps the gas in the stirring shell 3 into the air cavity 30 to heat the lifting rod 36, and then transfers the heat to the brush 26, so that the temperature of the brush 26 becomes high and thus transfers the temperature to the granular raw material attached to the filter hole 16 to dry it. The dried granular raw material will not adhere to the filter hole 16. The dried granular raw material can be cleaned by the brush 26 and dropped into the installation barrel 14 to avoid the granular raw material adhering to the filter hole 16 due to high humidity, thereby affecting the filtering effect. Therefore, this step can better remove the granular raw material blocking the filter hole 16.

[0032] After the filter hole 16 is unblocked, it is again identified that the granular raw material output from the carrier plate 20 is still below the range of a, indicating that the granular raw material blocking the filter hole 16 is difficult to remove. The control system controls the first motor 33 to drive the baffle 34 to flip in the connecting sleeve 32, and controls the opening of the connecting sleeve 32 to become smaller (such as Fig.13 As shown), the amount of raw material falling is reduced, and the time for the brush 26 to clean the filter hole 16 is increased to increase the time for the brush 26 to clean the blocked filter hole 16 until the wet granular raw material is dry, so as to better clean and drop the granular raw material.

[0033] It should be added that, when the opening of the connecting sleeve 32 becomes smaller, the first pump body 12 is started to recover the granular raw materials remaining on the grinding disc 15 into the mixing shell 3 through the recovery pipe 11 for secondary cleaning.

[0034] When the opening of the connecting sleeve 32 becomes smaller, the filter hole 16 is still blocked. At this time, the control system controls the first motor 33 to start, so that the baffle 34 becomes horizontal (such as Fig.14 As shown), the outlet of the connecting sleeve 32 is closed to prevent the raw material from falling. At this time, the drying time of the raw material in the mixing housing 3 is increased to further dry the raw material and ensure the dryness of the raw material entering the installation barrel 2 13; Example

[0035] In this embodiment, the grinding quality of the grinding equipment is further improved.

[0036] Specifically, the temperature in the stirring shell 3 is detected in real time by the temperature sensor 37, and the signal is transmitted to the control system. The drying temperature is set to C in the control system. When it is identified that the filter hole 16 on the grinding disc 15 is blocked and the temperature in the stirring shell 3 is lower than C, it means that the moisture in the raw material is not removed due to the low drying temperature. Therefore, the temperature of the electric heating module is adjusted by the control system so that the temperature value blown into the stirring shell 3 by the blower 9 reaches C, thereby increasing the drying temperature. It should be noted that when the heating temperature in the stirring housing 3 is increased, the baffle 34 is controlled to close the opening of the connecting sleeve 32 to prevent the raw material from falling onto the grinding disc 15 .

[0037] When the temperature inside the mixing shell 3 reaches C, the electric heating module is turned off, and the blower 9 is continued to be controlled to blow air, so that the hot air in the mixing shell 3 can be evenly distributed. Combined with the work of the mixing blades 10, the stirred raw materials are controlled to receive heat quickly and evenly to improve the drying quality. While improving the drying quality, it can also save drying time.

[0038] When the blower 9 is working, the air temperature in the mixing shell 3 is further judged. Within a certain period of time, the time is set to t. When the temperature in the mixing shell 3 is lower than c within the time t, it means that the high-temperature gas in the mixing shell 3 is lost quickly under the action of the blower 9, thereby affecting the drying efficiency. At this time, the electric heating module is restarted to blow the hot air back into the mixing shell 3. When the shell in the mixing shell 3 reaches c, the blower 9 and the electric heating module are synchronously suspended to increase the retention time of the raw materials in the mixing shell 3 to improve the drying quality; Furthermore, when the blower 9 stops working, the high-temperature gas in the stirring shell 3 still loses quickly, which means that the sealing of the stirring shell 3 is poor and needs to be repaired.

[0039] It should be added that when reaching c, the second pump body 35 is controlled to pump the high-temperature gas in the stirring shell 3 into the air cavity 30 so as to increase the strength of cleaning the grinding disc 15 .

[0040] When it is identified that the filter hole 16 on the grinding disc 15 is blocked and the temperature in the mixing shell 3 is higher than C, it means that the raw material is difficult to be ground into particles of a suitable size, which will block the filter hole 16. Therefore, the first pump body 12 is started to recycle the raw material remaining on the grinding disc 15 into the mixing shell 3 for re-grinding, so as to improve the grinding quality.

[0041] At the same time, the control system continues to control the linear drive to drive the lifting rod 36 to move towards the grinding disc 15 until the hard material of the brush 26 contacts the filter hole 16 and extends into the filter hole 16. The particles stuck in the filter hole 16 can be pushed out to prevent the filter hole 16 from being blocked and affecting the efficiency of the grinding equipment.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grinding device for preparing highly heat-resistant and wear-resistant plastic powder, comprising a support (1), characterized in that: A stirring mechanism is provided above the support (1), and a grinding mechanism is provided below the support (1); The grinding mechanism comprises a cleaning component, a grinding component and a discharging component, wherein: The grinding assembly comprises a mounting barrel 1 (14), a mounting barrel 2 (13) and a second motor (5) fixed to the bottom of the bracket (1); the mounting barrel 2 (13) is fixed above the mounting barrel 1 (14); a grinding disc (15) and a fixed shaft (19) are arranged between the mounting barrel 2 (13) and the mounting barrel 1 (14); wherein: The grinding disc (15) is evenly provided with a plurality of filter holes (16), the fixed shaft (19) is arranged along the center line of the grinding disc (15) and is fixedly connected to the grinding disc (15), a positioning shaft (17) is fixed inside the second mounting barrel (13), two groups of grinding rollers (18) are connected to the bearings on the positioning shaft (17), and the second motor (5) is connected to the fixed shaft (19) via a reducer; The cleaning assembly comprises a lifting rod (36), sliding rods (25) are fixed on both sides of the lifting rod (36), the sliding rod (25) is connected to the mounting barrel (14) through a linear drive, a plurality of brushes (26) are fixed on the top of the lifting rod (36), and an air cavity (30) is provided inside the lifting rod (36).

2. A grinding device for preparing high heat-resistant and wear-resistant plastic powder according to claim 1, characterized in that: The end of the brush (26) close to the lifting rod (36) is made of a hard material, and the end of the brush (26) away from the lifting rod (36) is made of a soft material.

3. A grinding device for preparing high heat-resistant and wear-resistant plastic powder according to claim 2, characterized in that: The discharging assembly comprises a second supporting plate (20) fixed to one side of the first mounting barrel (14); an elastic plate (21) is fixed to the surface of the second supporting plate (20); a gap (29) is provided between the elastic plate (21) and the second supporting plate (20); two groups of elastic telescopic rods (28) are fixed between the elastic plate (21) and the second supporting plate (20); two groups of pressure sensors (27) are fixed to the bottom of the elastic plate (21); and the elastic plate (21) and the second supporting plate (20) are both arranged as inclined surfaces.

4. A grinding device for preparing high heat-resistant and wear-resistant plastic powder according to claim 3, characterized in that: The stirring mechanism includes a feeding component, a crushing component and a material control component, wherein: The feeding assembly comprises a cover shell (6) fixed on the top of the bracket (1), a feed hopper (7) and a bearing plate (31); the bearing plate (31) and the feed hopper (7) are fixed on one side of the cover shell (6); the cover shell (6) and the bearing plate (31) penetrate each other; the feed hopper (7) is arranged above the bearing plate (31); and a rotating blade is connected to an internal bearing of the cover shell (6); The pulverizing assembly comprises a stirring shell (3) fixed in the middle of the support (1) and a motor belt drive group (4) fixed on the support (1); a connecting channel (8) is fixedly connected between the stirring shell (3) and the cover shell (6); and a cover plate (2) is provided on the top of the stirring shell (3); The internal bearing of the stirring shell (3) is connected to a stirring blade (10), and the stirring blade (10) is connected to the rotating blade via a motor belt drive group (4).

5. A grinding device for preparing high heat-resistant and wear-resistant plastic powder according to claim 4, characterized in that: The material control assembly comprises a connecting sleeve (32) and a first motor (33); the connecting sleeve (32) is fixed to the bottom of the stirring housing (3) and is located above the grinding mechanism; The first motor (33) is fixed to one side of the connecting sleeve (32); an internal bearing of the connecting sleeve (32) is connected to a baffle (34); and the first motor (33) is fixedly connected to a connecting shaft of the baffle (34) via a bevel gear set.

6. A grinding device for preparing high heat-resistant and wear-resistant plastic powder according to claim 5, characterized in that: The recovery mechanism includes a material recovery component and a gas recovery component, wherein: The material recovery component comprises a recovery pipe (11), the recovery pipe (11) being connected between the mounting barrel (14) and the stirring shell (3), the connection between the recovery pipe (11) and the mounting barrel (14) being arranged above the grinding disc (15), and the recovery pipe (11) being connected to a first pump body (12).

7. A grinding device for preparing high heat-resistant and wear-resistant plastic powder according to claim 6, characterized in that: The gas recovery assembly comprises an air pipe (22), the air pipe (22) being connected between the lifting rod (36) and the stirring shell (3), the air pipe (22) being communicated with the air cavity (30), and a second pump body (35) being fixedly connected to the air pipe (22).

8. The grinding equipment for preparing high heat-resistant and wear-resistant plastic powder according to claim 7, characterized in that: The installation barrel 1 (14) is provided with a long slot (23) near the lifting rod (36), and the lifting rod (36) moves up and down no more than the length of the long slot (23); The air pipe (22) and the outside of the mounting barrel (14) are fixed with a rubber cloth (24).

9. A grinding device for preparing high heat-resistant and wear-resistant plastic powder according to claim 8, characterized in that: The cover plate (2) is made of transparent glass, and a temperature sensor (37) is fixed to the inner wall of the stirring shell (3).

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