Self-suction type pulverizer

Abstract

This utility model relates to the field of crushing equipment technology, and in particular to a self-priming crusher. The crusher includes a frame, on which a crushing device is mounted. The crushing device includes a crushing shell, within which a crushing assembly is installed. A suction assembly is connected to the feed end of the crushing shell. The suction assembly includes a suction cylinder and an air inlet cylinder fitted around the lower end of the suction cylinder. Air inlets are located on both sides of the upper end of the suction cylinder. An airflow regulating sleeve is movably mounted on the suction cylinder. Multiple first airflow regulating holes are located at the upper end of the air inlet cylinder. An airflow regulating plate is located at the upper end of the air inlet cylinder and is movably mounted on the suction cylinder. Multiple second airflow regulating holes are located on the airflow regulating plate. A collecting shell is connected to the discharge end of the crushing shell, and a fan is connected to the discharge end of the collecting shell. A cyclone separator is connected to the discharge end of the fan. A drive assembly is also mounted on the frame. This utility model has advantages such as convenient adjustment of the feed rate, reduced material clogging, and good crushing performance.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, and in particular to a self-priming crusher. Background Technology

[0002] In industrial production and processing, pulverizers are common equipment, widely used in chemical, pharmaceutical, food and other industries. Their function is to pulverize various materials into the required particle size for subsequent processing or as finished products. However, existing pulverizing equipment has some shortcomings in structure and function. Most traditional pulverizers rely on manual or mechanical feeding. Manual feeding is not only inefficient but also labor-intensive, making it difficult to meet the needs of large-scale production. While mechanical feeding improves efficiency to some extent, it increases the complexity and cost of the equipment and is prone to uneven feeding, affecting the pulverizing effect. With technological advancements, self-priming pulverizers have also appeared on the market.

[0003] Chinese Patent Application No. 202121544239.7 discloses a self-priming pulverizer, including a crushing mechanism, a self-priming mechanism, a sealed connecting pipe, and a driving assembly. The crushing mechanism includes a crushing shell and a crushing assembly. The crushing shell has a crushing inlet on one side and a crushing outlet on the lower side. The crushing assembly is located in the crushing shell and is driven to rotate by a corresponding driving assembly. A screen is provided along the circumferential direction inside the crushing shell. The self-priming mechanism includes a self-priming shell and a self-priming impeller. The self-priming impeller is located in the self-priming shell and is driven to rotate by a corresponding driving assembly. The self-priming shell has a self-priming inlet on one side and a self-priming outlet on the upper side. The self-priming inlet is connected to the crushing outlet through a sealed connecting pipe. This crusher has separate crushing and self-priming mechanisms to ensure self-priming effectiveness. The number of crushing and self-priming mechanisms can be set according to actual conditions, making it more flexible in use. However, it is difficult to control the speed of material intake and the feed rate cannot be controlled. Insufficient feed will cause energy waste and reduce crushing efficiency, while excessive feed will cause material to clog the crushing mechanism, affecting the crushing effect and hindering the efficient production of raw materials. In addition, its self-priming inlet and crushing outlet need to be connected by a sealed connecting pipe, which is relatively complex and not very convenient to install. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of existing self-priming crushers, such as uncontrollable feed rate, poor crushing effect, complex structure, and difficult maintenance, and to provide a self-priming crusher with advantages such as easy adjustment of feed rate, less clogging of materials, and good crushing performance.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a self-priming pulverizer, including a frame, a pulverizing device mounted on the frame, the pulverizing device including a pulverizing shell, a pulverizing assembly disposed inside the pulverizing shell, a feeding end of the pulverizing shell connected to a suction assembly via a feeding pipe, the suction assembly including a suction cylinder and an air inlet cylinder sleeved at the lower end of the suction cylinder, air inlets on both sides of the upper end of the suction cylinder, an air volume regulating sleeve movably mounted on the suction cylinder for adjusting the size of the air inlets, and multiple first air inlets at the upper end of the air inlet cylinder. The machine has a volume adjustment hole, and an air volume adjustment plate is provided at the upper end of the air inlet duct. The air volume adjustment plate is movably sleeved on the suction cylinder. The air volume adjustment plate has multiple second air volume adjustment holes. The discharge end of the crushing shell is connected to a collection shell, and the discharge end of the collection shell is connected to a fan. An impeller is provided inside the fan. The discharge end of the fan is connected to a cyclone separator through a connecting pipe. An air outlet is provided at the upper end of the cyclone separator, and a discharge outlet is provided at the lower end of the cyclone separator. The frame is also provided with a drive assembly for driving the crushing component and the fan impeller to rotate.

[0006] Furthermore, the air volume regulating sleeve is movably mounted on the suction cylinder via a first regulating component. The first regulating component includes a first regulating nut and a first regulating bolt. The first regulating nut is located at an opening on one side of the air volume regulating sleeve, and the first regulating bolt is threaded onto the first regulating nut. The end of the first regulating bolt passes through the opening on the air volume regulating sleeve and abuts against the side wall of the suction cylinder.

[0007] Furthermore, the air volume regulating plate is rotatably sleeved on the suction cylinder via a second regulating component. The second regulating component includes a second regulating nut and a second regulating bolt. The second regulating nut is disposed on the air volume regulating plate, and the second regulating bolt is threadedly connected to the second regulating nut. The end of the second regulating bolt abuts against the side wall of the suction cylinder.

[0008] Furthermore, the upper end of the air inlet duct is provided with a plurality of first air volume adjustment holes spaced apart along the circumferential direction, and the plurality of first air volume adjustment holes are all circular hole-shaped structures.

[0009] Furthermore, the air volume regulating plate is provided with three second air volume regulating holes spaced apart along the circumferential direction, and the three second air volume regulating holes are all in the form of long strip arc-shaped structures.

[0010] Furthermore, the crushing assembly includes a movable toothed disc and a fixed toothed disc. The movable toothed disc is connected to one end of the drive shaft, and the other end of the drive shaft passes through the crushing housing and the first bearing seat and is connected to the drive assembly. A flow divider is provided on the side of the movable toothed disc near the feed end of the crushing housing. The movable toothed disc has first moving teeth and second moving teeth arranged alternately along the circumferential direction. The fixed toothed disc is respectively arranged on both sides inside the crushing housing. Multiple first toothed plates are arranged at intervals along the circumferential direction on the fixed toothed disc. The multiple first toothed plates are all located between the first moving teeth and the second moving teeth. The fixed toothed disc near the feed end also has multiple second toothed plates arranged at intervals along the circumferential direction. The second toothed plates and the first toothed plates are arranged alternately. The second toothed plates are located outside the second moving teeth.

[0011] Furthermore, the drive assembly includes a motor, a drive pulley, a first driven pulley, and a second driven pulley. The motor is mounted on the frame, and its output shaft is connected to the drive pulley. The first driven pulley is connected to the other end of the drive shaft. A first drive belt is wound between the first driven pulley and the drive pulley. The second driven pulley is connected to one end of the fan shaft. The other end of the fan shaft passes through a second bearing housing and the fan casing, connecting to the impeller. A second drive belt is wound between the second driven pulley and the first driven pulley. A tensioner is provided on the outer side of the second drive belt, and the tensioner is mounted on the frame via a mounting base.

[0012] Furthermore, an annular screen is provided inside the crushing housing, and the annular screen is arranged around the crushing assembly.

[0013] Furthermore, a protective net is provided on the frame, and the protective net is located on one side of the drive assembly.

[0014] Furthermore, a crushing shell cover is provided on one side of the crushing shell, and a feed inlet is provided in the middle of the crushing shell cover. The feed inlet is connected to the feed pipe. One side of the crushing shell cover is hinged to the crushing shell through a hinge. A locking pressure plate is provided on the other side of the crushing shell cover. A locking assembly that cooperates with the locking pressure plate is provided on the crushing shell. The locking assembly includes an ear plate, a pin, a locking bolt, and a locking handwheel. The ear plate is installed on the crushing shell. One end of the locking bolt is hinged to the ear plate through the pin, and the other end of the locking bolt is threaded to the locking handwheel.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The present invention provides a self-priming pulverizer. The air intake volume is adjusted by adjusting the area of ​​the air intake blocked by the air volume regulating sleeve in the suction component, thereby realizing the adjustment of the feed volume. At the same time, the air intake volume can be adjusted by adjusting the position of the air volume regulating plate and adjusting the overlapping area of ​​the first air volume regulating hole and the second air volume regulating hole, thereby realizing the adjustment of the feed volume. This makes the amount of material sucked into the pulverizer match the processing capacity of the pulverizer, effectively preventing the material blockage phenomenon after the suction component is inserted into the material, effectively ensuring the pulverization effect, and improving the production efficiency of the equipment.

[0017] (2) The present invention provides a self-priming crusher, in which the material collection shell and the fan are connected, eliminating the structural design of the sealing connection pipe, which makes the sealing performance of the material collection shell and the fan better. Furthermore, both the material collection shell and the fan can be set on the frame at the lower end of the crushing device, thereby making the overall structure of the equipment more compact and the appearance more exquisite.

[0018] (3) The present invention provides a self-priming crusher, wherein the first toothed plate has a gap between itself and the first moving tooth and the second moving tooth, and the second toothed plate has a gap between itself and the second moving tooth. Under the action of rotation, the material collides and rubs against each other in the gap, thereby effectively crushing and pulverizing the material and effectively improving the crushing efficiency of the material.

[0019] (4) This utility model is a self-priming crusher. It achieves self-priming feeding through the airflow guidance structure of the fan, which reduces manual intervention and improves production efficiency. The overall structure is simple, the layout of each component is reasonable, and it is easy to install, debug and maintain, which reduces the cost of using the equipment. The universal wheels at the bottom of the frame allow the equipment to move flexibly according to production needs, which improves the applicability of the equipment. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a self-priming pulverizer according to the present invention.

[0021] Figure 2 This is a structural diagram of a self-priming crusher material suction component according to the present invention.

[0022] Figure 3 This is a structural diagram of a self-priming pulverizer pulverizing device according to the present invention.

[0023] Figure 4 This is a structural diagram of a self-priming crusher drive assembly according to the present invention.

[0024] In the diagram: 1. Frame, 2. Casters, 3. Feed pipe, 4. Collector shell, 5. Fan, 6. Connecting pipe, 7. Cyclone separator, 8. Protective net, 9. Suction cylinder, 91. Air outlet, 10. Air inlet, 101. First airflow adjustment hole, 11. Airflow adjustment sleeve, 12. Airflow adjustment plate, 121. Second airflow adjustment hole, 13. First adjusting nut, 14. First adjusting bolt, 15. Second adjusting nut, 16. Second adjusting bolt, 17. Crushing shell, 18. Crushing shell cover, 181. Feed inlet, 19. Hinge, 20. Locking plate, 201. Opening 21. Ear plate, 22. Pin, 23. Locking bolt, 24. Locking handwheel, 25. Movable gear plate, 26. Fixed gear plate, 27. Drive shaft, 28. Diverter baffle, 29. First moving gear, 30. Second moving gear, 31. First gear plate, 32. Second gear plate, 33. First bearing housing, 34. Annular screen, 35. Motor, 36. Drive pulley, 37. First driven pulley, 38. Second driven pulley, 39. First drive belt, 40. Fan shaft, 41. Second bearing housing, 42. Second drive belt, 43. Tensioner, 44. Mounting base. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments.

[0026] like Figure 1-4 The self-priming pulverizer shown includes a frame 1. Universal wheels 2 are installed at the four corners of the bottom of the frame 1, allowing the equipment to move flexibly according to production needs, thus improving its applicability. A pulverizing device is installed on the frame 1, including a pulverizing shell containing pulverizing components. The feed end of the pulverizing shell is connected to a suction component via a feed pipe 3. The discharge end of the pulverizing shell is connected to a collecting shell 4, and the discharge end of the collecting shell 4 is connected to a fan 5. An impeller is installed inside the fan 5, and the discharge end of the fan 5 is connected to a cyclone separator 7 via a connecting pipe 6. An air outlet is located at the upper end of the cyclone separator 7, and a discharge outlet is located at the lower end of the cyclone separator 7. A drive assembly for driving the pulverizing components and the fan impeller is also installed on the frame 1. A protective net 8 is installed on the frame 1, located on one side of the drive assembly.

[0027] The material suction assembly includes a material suction cylinder 9 and an air inlet cylinder 10 fitted at the lower end of the material suction cylinder 9. Air inlets 91 are opened on both sides of the upper end of the material suction cylinder 9. An air volume regulating sleeve 11 for adjusting the size of the air inlets 91 is movably fitted on the material suction cylinder 9. Multiple first air volume regulating holes 101 are spaced apart along the circumferential direction at the upper end of the air inlet cylinder 10. The multiple first air volume regulating holes 101 are all circular holes. An air volume regulating plate 12 is provided at the upper end of the air inlet cylinder 10. The air volume regulating plate 12 is movably fitted on the material suction cylinder 9. Three second air volume regulating holes 121 are spaced apart along the circumferential direction on the air volume regulating plate 12. The three second air volume regulating holes 121 are all elongated arc-shaped structures.

[0028] Preferably, the air volume regulating sleeve 11 is movably mounted on the suction cylinder 9 via a first adjusting component. The first adjusting component includes a first adjusting nut 13 and a first adjusting bolt 14. The first adjusting nut 13 is located at an opening on one side of the air volume regulating sleeve 11. The first adjusting bolt 14 is threaded onto the first adjusting nut 13. The end of the first adjusting bolt 14 passes through the opening on the air volume regulating sleeve 11 and abuts against the side wall of the suction cylinder 9. The first adjusting bolt 14 is used to fix the position of the air volume regulating sleeve 11 on the suction cylinder 9, thereby adjusting the opening size of the air outlet 91.

[0029] Preferably, the air volume regulating plate 12 is rotatably sleeved on the suction cylinder 9 via a second regulating component. The second regulating component includes a second regulating nut 15 and a second regulating bolt 16. The second regulating nut 15 is disposed on the air volume regulating plate 9, and the second regulating bolt 16 is threadedly connected to the second regulating nut 15. The end of the second regulating bolt 16 abuts against the side wall of the suction cylinder 9. The second regulating bolt 16 is used to fix the position of the air volume regulating plate 12 above the air inlet cylinder 10, thereby adjusting the overlap area between the first air volume regulating hole 101 and the second air volume regulating hole 121.

[0030] The crushing housing includes a crushing body 17 and a crushing cover 18. A feed inlet 181 is located in the center of the crushing cover 18, and the feed inlet 181 is connected to the feed pipe 3. One side of the crushing cover 18 is hinged to the crushing body 17 via a hinge 19. A locking plate 20 is located on the other side of the crushing cover 18, and an opening 201 is located on one side of the locking plate 20. A locking assembly that cooperates with the locking plate 20 is provided on the crushing body 17. The locking assembly includes an ear plate 21, a pin 22, and a locking bolt 23. The locking handwheel 24 and the ear plate 21 are installed on the crushing shell 17. One end of the locking bolt 23 is hinged to the ear plate 21 through the pin 22, and the other end of the locking bolt 23 is threaded to the locking handwheel 24. When it is necessary to open the crushing shell cover 18, rotate the locking handwheel 24 to gradually move the locking handwheel 24 away from the locking pressure plate 20. Then, the locking bolt 23 can be moved out of the opening 201 of the locking pressure plate 20 by the locking handwheel 24. When it is necessary to close the crushing shell cover 18, the operation is reversed.

[0031] The crushing assembly includes a movable toothed disc 25 and a fixed toothed disc 26. The movable toothed disc 25 is connected to one end of a drive shaft 27, and the other end of the drive shaft 27 passes through the crushing shell 17 and the first bearing seat 33 and is connected to the drive assembly. A flow divider 28 is provided on the side of the movable toothed disc 25 near the feed end of the crushing shell. The flow divider 28 can make the sucked material evenly distributed in the crushing shell. The movable toothed disc 25 has first moving teeth 29 and second moving teeth 30 arranged alternately along the circumferential direction. The fixed toothed disc 26 is respectively provided on the crushing shell 17 and the crushing shell cover 18. Multiple first toothed pieces 31 are arranged at intervals along the circumferential direction on the fixed toothed disc 26. The multiple first toothed pieces 31 are all located between the first moving teeth 29 and the second moving teeth 30. The fixed toothed disc 26 provided on the crushing shell cover 18 also has multiple second toothed pieces 32 arranged at intervals along the circumferential direction. The second toothed pieces 32 and the first toothed pieces 31 are arranged alternately. The second toothed pieces 32 are located outside the second moving teeth 30.

[0032] Preferably, an annular screen 34 is also provided inside the crushing housing, and the annular screen 34 is arranged around the crushing component, so that screens with different apertures can be replaced according to crushing requirements.

[0033] The drive assembly includes a motor 35, a drive pulley 36, a first driven pulley 37, and a second driven pulley 38. The motor 35 is mounted on the frame 1, and the output shaft of the motor 35 is connected to the drive pulley 36. The first driven pulley 37 is connected to the other end of the drive shaft 27. A first drive belt 39 is wound between the first driven pulley 37 and the drive pulley 36. The second driven pulley 38 is connected to one end of the fan shaft 40. The other end of the fan shaft 40 passes through the second bearing seat 41 and the fan housing and connects to the impeller. A second drive belt 42 is wound between the second driven pulley 38 and the first driven pulley 37. A tensioner 43 is provided on the outside of the second drive belt 42, and the tensioner 43 is mounted on the frame 1 through a mounting base 44.

[0034] In operation, this self-priming pulverizer operates as follows: Motor 35 drives the pulverizing assembly and fan 5 via a belt. Material, under the negative pressure created by the fan 5, enters the pulverizing chamber through the suction assembly and feed pipe 3. Feed pipes 3 of varying lengths are selected based on actual conditions. The suction assembly adjusts the airflow by varying the area of ​​the air outlet 91 blocked by the airflow regulating sleeve 11, thus regulating the feed volume. Simultaneously, the airflow can be adjusted by changing the position of the airflow regulating plate 12 and the overlapping area of ​​the first airflow regulating hole 101 and the second airflow regulating hole 121, thereby regulating the feed volume. This ensures that the amount of material sucked into the pulverizer matches its processing capacity, preventing jamming caused by excessive material intake at once, effectively guaranteeing the pulverizing effect and improving equipment efficiency. During pulverization, the drive shaft 27 drives the movable toothed disc 25 to rotate, which in turn drives the first moving tooth 29 and the second moving tooth 30 to rotate. Since there are gaps between the first tooth 31 and the first moving tooth 29 and the second moving tooth 30 respectively, the second tooth 3... There is a gap between the impeller and the second moving tooth 30. Under the action of rotation, the material collides and rubs against each other in the gap, which can effectively crush and pulverize the material, thus effectively improving the crushing efficiency. When the impeller rotates at high speed inside the blower 5, it creates a negative pressure inside the blower 5. The crushed material is carried by the negative pressure airflow generated by the blower 5 and passes through the annular screen 34. It enters the collection shell 4 through the discharge port at the lower end of the crushing shell. Then, the material in the collection shell 4 enters the blower 5 under the action of pressure difference. Driven by the rotation of the impeller, the material is discharged into the cyclone separator 7 through the upper discharge port. The material achieves gas-solid separation in the cyclone separator 7. The material is discharged from the lower discharge port of the cyclone separator 7, and the gas is discharged from the upper air outlet of the cyclone separator 7. The collecting shell 4 and the blower 5 are directly connected, eliminating the need for a sealed connecting pipe structure design. This results in better sealing performance between the collecting shell 4 and the blower 5. Furthermore, both the collecting shell 4 and the blower 5 can be mounted on the frame 1 at the lower end of the crushing device, making the overall structure of the equipment more compact and the appearance more exquisite.

[0035] This utility model discloses a self-priming pulverizer, which achieves self-priming feeding through a fan airflow guidance structure, reducing manual intervention and improving production efficiency. The feeding component can adjust the feeding amount according to the processing capacity of the equipment, effectively preventing material blockage after the feeding component is inserted into the material, thus effectively ensuring the pulverizing effect and improving the production efficiency of the equipment. The overall structure is simple, the layout of each component is reasonable, and it is easy to install, debug and maintain, reducing the operating cost of the equipment. It has the advantages of convenient adjustment of feeding amount, less likelihood of material blockage, and good pulverizing performance.

[0036] The above description, in conjunction with preferred technical solutions, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of the utility model is limited to these descriptions. For those skilled in the art, simple deductions and substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the scope of protection of this utility model.

Claims

1. A self-priming pulverizer, characterized in that: The device includes a frame, on which a crushing device is mounted. The crushing device includes a crushing housing, within which a crushing assembly is housed. The feed end of the crushing housing is connected to a suction assembly via a feed pipe. The suction assembly includes a suction cylinder and an air inlet cylinder fitted around the lower end of the suction cylinder. Air inlets are located on both sides of the upper end of the suction cylinder. An airflow regulating sleeve for adjusting the size of the air inlets is movably fitted onto the suction cylinder. Multiple first airflow regulating holes are located at the upper end of the air inlet cylinder, and an airflow regulating device is provided at the upper end of the air inlet cylinder. An adjusting plate and an air volume adjusting plate are movably sleeved on the suction cylinder. The air volume adjusting plate has multiple second air volume adjusting holes. The discharge end of the crushing shell is connected to a collecting shell, and the discharge end of the collecting shell is connected to a fan. An impeller is installed inside the fan. The discharge end of the fan is connected to a cyclone separator through a connecting pipe. An air outlet is provided at the upper end of the cyclone separator, and a discharge outlet is provided at the lower end of the cyclone separator. The frame is also equipped with a drive assembly for driving the crushing components and the fan impeller to rotate.

2. The self-priming pulverizer according to claim 1, characterized in that: The air volume regulating sleeve is movably mounted on the suction cylinder via a first regulating component. The first regulating component includes a first regulating nut and a first regulating bolt. The first regulating nut is located at an opening on one side of the air volume regulating sleeve. The first regulating bolt is threaded onto the first regulating nut. The end of the first regulating bolt passes through the opening on the air volume regulating sleeve and abuts against the side wall of the suction cylinder.

3. A self-priming pulverizer according to claim 1, characterized in that: The air volume regulating plate is rotatably sleeved on the suction cylinder via a second regulating component. The second regulating component includes a second regulating nut and a second regulating bolt. The second regulating nut is disposed on the air volume regulating plate, and the second regulating bolt is threadedly connected to the second regulating nut. The end of the second regulating bolt abuts against the side wall of the suction cylinder.

4. A self-priming pulverizer according to claim 1, characterized in that: The upper end of the air inlet duct is provided with a plurality of first air volume adjustment holes spaced apart along the circumferential direction, and the plurality of first air volume adjustment holes are all circular holes.

5. A self-priming pulverizer according to claim 1, characterized in that: The air volume regulating plate is provided with three second air volume regulating holes spaced apart along the circumference, and the three second air volume regulating holes are all in the form of long strip arc structure.

6. A self-priming pulverizer according to claim 1, characterized in that: The crushing assembly includes a movable toothed disc and a fixed toothed disc. The movable toothed disc is connected to one end of a drive shaft, and the other end of the drive shaft passes through the crushing housing and the first bearing seat and is connected to the drive assembly. A flow divider is provided on the side of the movable toothed disc near the feed end of the crushing housing. The movable toothed disc has first moving teeth and second moving teeth arranged alternately along the circumferential direction. The fixed toothed disc is respectively arranged on both sides inside the crushing housing. Multiple first toothed plates are arranged at intervals along the circumferential direction on the fixed toothed disc. The multiple first toothed plates are all located between the first moving teeth and the second moving teeth. The fixed toothed disc near the feed end also has multiple second toothed plates arranged at intervals along the circumferential direction. The second toothed plates and the first toothed plates are arranged alternately. The second toothed plates are located outside the second moving teeth.

7. A self-priming pulverizer according to claim 1, characterized in that: The drive assembly includes a motor, a drive pulley, a first driven pulley, and a second driven pulley. The motor is mounted on a frame, and its output shaft is connected to the drive pulley. The first driven pulley is connected to the other end of a drive shaft. A first drive belt is wound between the first driven pulley and the drive pulley. The second driven pulley is connected to one end of a fan shaft. The other end of the fan shaft passes through a second bearing housing and a fan casing, connecting to an impeller. A second drive belt is wound between the second driven pulley and the first driven pulley. A tensioner is provided on the outer side of the second drive belt, and the tensioner is mounted on the frame via a mounting base.

8. A self-priming pulverizer according to claim 1, characterized in that: The crushing housing is equipped with an annular screen, which is located around the crushing assembly.

9. A self-priming pulverizer according to claim 1, characterized in that: A protective net is installed on the frame, and the protective net is located on one side of the drive assembly.

10. A self-priming pulverizer according to any one of claims 1 to 9, characterized in that: A crushing shell cover is provided on one side of the crushing shell housing. A feed inlet is provided in the middle of the crushing shell cover and is connected to a feed pipe. One side of the crushing shell cover is hinged to the crushing shell housing via a hinge. A locking plate is provided on the other side of the crushing shell cover. An opening is provided on one side of the locking plate. A locking assembly that cooperates with the locking plate is provided on the crushing shell housing. The locking assembly includes an ear plate, a pin, a locking bolt, and a locking handwheel. The ear plate is installed on the crushing shell housing. One end of the locking bolt is hinged to the ear plate via a pin, and the other end of the locking bolt is threaded to the locking handwheel.

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