Pesticide suspension agent production pulverizer

Abstract

This utility model relates to the technical field of pulverizing devices, and in particular to a pulverizing device for the production of pesticide suspensions, which can automatically collect and circulate unqualified particles for pulverizing, thereby improving pulverizing efficiency. It includes a pulverizing box, a feeding hopper, and a discharge pipe; it also includes a driving roller, a driven roller, a sieve plate, a partition plate, an auger tube, and spiral blades. The driving roller and driven roller are rotatably mounted in the middle of the pulverizing chamber of the pulverizing box. The sieve plate is inclinedly mounted in the lower part of the pulverizing chamber of the pulverizing box. The partition plate is mounted at the bottom of the pulverizing chamber of the pulverizing box, located below the lower end of the sieve plate. The partition plate divides the bottom of the pulverizing chamber of the pulverizing box into a collection chamber for collecting unqualified particles separated by the sieve plate. The auger tube is installed in the pulverizing chamber of the pulverizing box, with its input end extending into the collection chamber separated by the partition plate. The spiral blades are rotatably mounted in the auger tube, with its output end facing upwards and towards the middle of the driven roller and the driving roller.

Description

Technical Field

[0001] This utility model relates to the technical field of pulverizing devices, and in particular to a pulverizing device for the production of pesticide suspensions. Background Technology

[0002] In the production of pesticide suspensions, raw materials need to be pulverized using a pulverizing device. Chinese utility model patent CN222369213U discloses a pre-pulverizing device for pesticide suspension production. This pulverizing device includes a pulverizing box, a pulverizing mechanism, and a vibrating screening mechanism. The pulverizing box has a feed inlet and a discharge inlet. The pulverizing mechanism includes a pulverizing motor and two pulverizing rollers. The vibrating screening mechanism includes a screen frame assembly, a drive assembly, and a guide assembly. The screen frame assembly includes a frame body and a connecting seat. The bottom of the frame body has a perforated plate, and both sides of the frame body have inserts. A screw is hinged to the top of the side wall of the frame body. The connecting seat includes two baffles and multiple connecting rods. The inner sides of the two baffles have slots, and the tops of the two baffles have mounting holes. Rollers are located below the connecting seat. The drive assembly drives the screen frame assembly to move up and down, and the guide assembly guides the up and down movement of the screen frame assembly. This pulverizing device can pre-pulverize powdered active ingredients and also screen out incompletely pulverized, substandard particles.

[0003] However, after the above-mentioned crushing device crushes and sieves the raw materials, the raw materials that do not meet the particle size requirements are intercepted and retained in the screen frame assembly. The screen frame assembly needs to be disassembled and the unqualified particles need to be manually collected before they can be recycled and crushed again. It cannot automatically recycle and crush, which is not conducive to improving the crushing efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a pulverizing device for pesticide suspension production that can automatically collect and circulate unqualified particles, thereby improving pulverizing efficiency.

[0005] This utility model discloses a pulverizing device for producing pesticide suspensions, comprising a pulverizing box, a feeding hopper, and a discharge pipe. The pulverizing box contains a pulverizing chamber. The feeding hopper is mounted on the pulverizing box, with its output end extending into the top of the pulverizing chamber. The discharge pipe is located at the bottom of the pulverizing box and communicates with the bottom of the pulverizing chamber. The device also includes a driving roller, a driven roller, a sieve plate, a partition plate, an auger pipe, and spiral blades. The driving roller and the driven roller are rotatably mounted in the middle of the pulverizing chamber. A gap is set between the two rollers for crushing raw materials. The output end of the feeding hopper faces the middle and above the rollers. The screen plate is installed at an angle in the lower part of the crushing chamber of the crushing box, above the discharge pipe. A baffle is installed at the bottom of the crushing chamber of the crushing box, below the lower end of the screen plate. The baffle separates the bottom of the crushing chamber of the crushing box into a collection chamber, which is used to collect the unqualified particles screened by the screen plate. An auger is installed in the crushing chamber of the crushing box, and the input end of the auger extends into the collection chamber separated by the baffle. In the collection chamber, spiral blades are rotated within an auger tube, with the output end of the auger tube facing upwards and towards the middle of the driven roller and the driving roller. During operation, raw materials are fed into the upper part of the crushing chamber of the crushing box through the feeding hopper and fall onto the upper middle of the driving roller and the driven roller. The driving roller and the driven roller rotate relative to each other, causing the raw materials to be crushed through the gap between them. The crushed particles fall onto a screen plate, which separates the particles. Qualified particles fall to the bottom of the crushing chamber of the crushing box after being screened and are discharged through the discharge pipe. Incompletely crushed particles slide along the screen plate and fall into the collection chamber separated by a partition. The spiral blades rotate within the auger tube, lifting the unqualified particles in the collection chamber upwards along the auger tube. The unqualified particles flow back through the output end of the auger tube to the upper middle of the driving roller and the driven roller, where they are crushed again. This process automatically collects and recycles unqualified particles, improving crushing efficiency.

[0006] Preferably, it also includes a second driven roller, which is rotatably mounted on the upper part of the crushing chamber of the crushing box. The second driven roller is located above the active roller, and a second gap is provided between the second driven roller and the active roller. The second gap is smaller than the first gap between the active roller and the first driven roller. The second driven roller rotates relative to the active roller. Before the unqualified particles are fed back to the active roller and the first driven roller through the auger pipe, the active roller and the second driven roller first crush the unqualified particles through the second gap. Since the second gap is smaller than the first gap, the crushing effect on the unqualified particles is improved.

[0007] Preferably, it also includes a driven roller three, which is rotatably installed in the middle of the crushing chamber of the crushing box. The driven roller three is located below the middle of the driving roller and the driven roller one. A gap three is provided between the driven roller three and the driving roller, which is smaller than the gap two. The driven roller three rotates relative to the driving roller. After the unqualified particles are crushed again by the driving roller and the driven roller one, the unqualified particles are crushed for a fourth time by passing through the gap three between the driving roller and the driven roller three. Since the gap three is smaller than the gap two, the crushing effect of the unqualified particles is improved.

[0008] Preferably, the device further includes a drive mechanism, a drive gear, driven gear one, driven gear two, and driven gear three. The drive mechanism is mounted on the crushing box, and its output shaft is connected to the drive roller. The drive gear is concentrically mounted on the end of the drive roller, and the driven gear one is concentrically mounted on the end of driven roller one, meshing with the drive gear. Driven gear two is concentrically mounted on the end of driven roller two, meshing with the drive gear. Driven gear three is concentrically mounted on the end of driven roller three, meshing with the drive gear. The drive mechanism drives the drive roller to rotate, which in turn drives the drive gear to rotate. The drive gear meshes with driven gear one, causing the drive roller and driven roller one to rotate relative to each other. The drive gear meshes with driven gear two, causing the drive roller and driven roller two to rotate relative to each other. The drive gear meshes with driven gear three, causing the drive roller and driven roller three to rotate relative to each other. This allows the drive roller and driven roller one, drive roller and driven roller two, and drive roller and driven roller three to work together to repeatedly crush and grind the raw materials, resulting in good practicality.

[0009] Preferably, the assembly also includes a servo motor, a drive gear, a rotating shaft, a scraper, and a sector-shaped driven tooth. The servo motor is mounted on the crushing box, the drive gear is concentrically mounted on the output shaft of the servo motor, and the rotating shaft is rotatably mounted in the crushing chamber of the crushing box. A scraper is mounted on the rotating shaft, and the outer edge of the scraper scrapes against the lower surface of either the driven roller or the driving roller. The sector-shaped driven tooth is mounted on the rotating shaft and meshes with the drive gear. The servo motor drives the drive gear to rotate, which in turn drives the rotating shaft to rotate, causing the rotating shaft to swing the scraper. When the outer edge of the scraper scrapes against the lower surface of the driven roller, it scrapes off the raw material particles remaining on the surface of the driven roller. When the outer edge of the scraper scrapes against the lower surface of the driving roller, it scrapes off the raw material particles remaining on the surface of the driving roller, thus reducing residue and improving crushing efficiency.

[0010] Preferably, it also includes a drive disc, a connecting rod, a push rod, and a support rod. The drive disc is concentrically mounted at the lower end of the shaft of the spiral blades, and is located below the crushing chamber. One end of the connecting rod is rotatably connected to the edge of the drive disc via a shaft, and the other end of the connecting rod is rotatably connected to the outer end of the push rod. The push rod is slidably inserted into the bottom outer wall of the crushing chamber, and the inner end of the push rod extends into the lower part of the crushing chamber. The inner end of the push rod is rotatably connected to the lower end of the driven gear two, and the upper end of the driven gear two is rotatably connected to the sieve plate. The support rod is located below the sieve plate. When the rotating blades lift unqualified particles along the auger pipe, the spiral blades drive the drive disc to rotate. The drive disc drives one end of the connecting rod to rotate, causing the other end of the connecting rod to drive the push rod to move back and forth. When the push rod moves inward, it drives the lower end of the support rod to move inward, causing the support rod to tilt. When the push rod moves outward, it drives the lower end of the support rod to move outward, causing the support rod to rise vertically. This causes the support rod to push the lower end of the screen plate to swing up and down, making the screen plate jump and screen pesticide suspension particles, avoiding clogging of the screen holes and improving screening efficiency.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: During operation, the raw material is added to the upper part of the crushing chamber of the crushing box through the feeding hopper and falls to the middle of the upper part of the active roller and the driven roller. The active roller and the driven roller rotate relative to each other, so that the raw material is crushed through the gap between the active roller and the driven roller. The crushed particles fall onto the screen plate, and the screen plate screens the particles. The qualified particles fall to the bottom of the crushing chamber of the crushing box after being screened by the screen plate and are discharged through the discharge pipe. The unqualified particles that are not completely crushed slide along the screen plate and fall into the collection chamber separated by the partition. The spiral blades rotate in the auger tube, so that the spiral blades lift the unqualified particles in the collection chamber upward along the auger tube. The unqualified particles flow back to the middle of the upper part of the active roller and the driven roller through the output end of the auger tube, so that the unqualified particles are crushed again by the active roller and the driven roller. This realizes automatic collection and recycling of unqualified particles, improving crushing efficiency. Attached Figure Description

[0012] Figure 1 This is a front sectional view of the present invention;

[0013] Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the rear view structure of this utility model;

[0016] Figure 5 It is a structural diagram of the active roller, driven roller one, driven roller two, driven roller three, and drive mechanism, etc.

[0017] Figure 6 It is a structural diagram of components such as servo motor, drive gear, shaft, scraper, and sector driven gear;

[0018] Figure 7 It is a structural diagram of the sieve plate, auger pipe, spiral blades, drive disc, connecting rod, push rod and support rod.

[0019] The following components are labeled in the attached diagram: 1. Crushing box; 2. Feeding hopper; 3. Discharge pipe; 4. Driving roller; 5. Driven roller one; 6. Screen plate; 7. Partition plate; 8. Screwdriver pipe; 9. Spiral blade; 10. Driven roller two; 11. Driven roller three; 12. Drive mechanism; 13. Driving gear; 14. Driven gear one; 15. Driven gear two; 16. Driven gear three; 17. Steering motor; 18. Drive gear; 19. Rotating shaft; 20. Scraper; 21. Sector-shaped driven gear; 22. Drive disc; 23. Connecting rod; 24. Push rod; 25. Support rod. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, a pulverizing device for producing pesticide suspension includes a pulverizing box 1, a feeding hopper 2, and a discharge pipe 3. The pulverizing box 1 has a pulverizing chamber inside. The feeding hopper 2 is mounted on the pulverizing box 1, and its output end extends into the top of the pulverizing chamber. The discharge pipe 3 is located at the bottom of the pulverizing box 1 and communicates with the bottom of the pulverizing chamber. The device also includes a driving roller 4, a driven roller 5, a sieve plate 6, a partition plate 7, an auger pipe 8, and spiral blades 9. The driving roller 4 and the driven roller 5 are rotatably mounted in the middle of the pulverizing chamber of the pulverizing box 1, and a pulverizing element is disposed between the driving roller 4 and the driven roller 5. The material gap is one, the output end of the feeding hopper 2 faces the middle and above of the driving roller 4 and driven roller 5, the screen plate 6 is installed at an incline in the lower part of the crushing chamber of the crushing box 1, the screen plate 6 is located above the discharge pipe 3, the partition plate 7 is installed at the bottom of the crushing chamber of the crushing box 1, the partition plate 7 is located below the lower end of the screen plate 6, the partition plate 7 divides the bottom of the crushing chamber of the crushing box 1 into a collection chamber, the collection chamber is used to collect the unqualified particles screened by the screen plate 6, the auger pipe 8 is installed in the crushing chamber of the crushing box 1, the input end of the auger pipe 8 extends into the collection chamber separated by the partition plate 7, and the spiral blade 9 is rotatably installed on the auger pipe 8. In this structure, the output end of the auger tube 8 faces the upper center of the driven roller 5 and the driving roller 4; it also includes a servo motor 17, a drive gear 18, a rotating shaft 19, a scraper 20, and a sector-shaped driven tooth 21. The servo motor 17 is mounted on the crushing box 1, the drive gear 18 is concentrically mounted on the output shaft of the servo motor 17, the rotating shaft 19 is rotatably mounted in the crushing chamber of the crushing box 1, the scraper 20 is mounted on the rotating shaft 19, the outer edge of the scraper 20 scrapes and contacts the lower surface of the driven roller 5 or the driving roller 4, and the sector-shaped driven tooth 21 is mounted on the rotating shaft 19 and meshes with the drive gear 18; it also includes a drive disc. 22. Connecting rod 23, push rod 24 and support rod 25. Drive disk 22 is concentrically mounted on the lower end of the rotating shaft of spiral blade 9. Drive disk 22 is located below crushing box 1. One end of connecting rod 23 is rotatably connected to the edge of drive disk 22 through rotating shaft. The other end of connecting rod 23 is rotatably connected to the outer end of push rod 24. Push rod 24 is slidably inserted into the bottom outer wall of crushing box 1. The inner end of push rod 24 extends into the lower part of crushing chamber of crushing box 1. The inner end of push rod 24 is rotatably connected to the lower end of driven gear 15. The upper end of driven gear 15 is rotatably connected to screen plate 6. Support rod 25 is located below screen plate 6.

[0022] During operation, raw materials are fed into the upper part of the crushing chamber of the crushing box 1 through the feeding hopper 2, and fall onto the upper middle part of the drive roller 4 and driven roller 5. The drive roller 4 and driven roller 5 rotate relative to each other, causing the raw materials to be crushed through the gap between the drive roller 4 and driven roller 5. The crushed particles fall onto the screen plate 6, which screens the particles. Qualified particles fall to the bottom of the crushing chamber of the crushing box 1 after being screened by the screen plate 6 and are discharged through the discharge pipe 3. The unqualified particles that are not completely crushed slide along the screen plate 6 and fall into the collection chamber separated by the partition plate 7. The spiral blades 9 rotate in the auger pipe 8, causing the spiral blades 9 to lift the unqualified particles in the collection chamber upwards along the auger pipe 8. The particles flow back to the upper middle of the active roller 4 and the driven roller 5 through the output end of the auger tube 8, so that the unqualified particles are crushed again by the active roller 4 and the driven roller 5, thereby realizing the automatic collection and recycling of unqualified particles, improving crushing efficiency. The servo motor 17 drives the drive gear 18 to rotate, and the drive gear 18 drives the rotating shaft 19 to rotate, so that the rotating shaft 19 drives the scraper 20 to swing. When the outer edge of the scraper 20 scrapes and contacts the lower surface of the driven roller 5, it scrapes off the raw material particles remaining on the surface of the driven roller 5. When the outer edge of the scraper 20 scrapes and contacts the lower surface of the active roller 4, it scrapes off the raw material particles remaining on the surface of the active roller 4, reducing residue and improving crushing efficiency.

[0023] As the spiral blade 9 rotates and lifts unqualified particles along the auger pipe 8, the spiral blade 9 drives the drive disc 22 to rotate. The drive disc 22 drives one end of the connecting rod 23 to rotate, causing the other end of the connecting rod 23 to drive the push rod 24 to move back and forth. When the push rod 24 moves inward, it drives the lower end of the support rod 25 to move inward, causing the support rod 25 to tilt. When the push rod 24 moves outward, it drives the lower end of the support rod 25 to move outward, causing the support rod 25 to rise vertically. This causes the support rod 25 to push the lower end of the sieve plate 6 to swing up and down, causing the sieve plate 6 to jump and screen pesticide suspension particles, avoiding clogging of the sieve holes and improving screening efficiency. Example 2

[0024] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, based on Embodiment 1, it further includes a second driven roller 10, which is rotatably mounted on the upper part of the crushing chamber of the crushing box 1. The second driven roller 10 is located above the driving roller 4, and a second gap is provided between the second driven roller 10 and the driving roller 4. The second gap is smaller than the first gap between the driving roller 4 and the first driven roller 5. The second driven roller 10 rotates relative to the driving roller 4. It also includes a third driven roller 11, which is rotatably mounted in the middle of the crushing chamber of the crushing box 1. The third driven roller 11 is located below the middle of the driving roller 4 and the first driven roller 5. A third gap is provided between the third driven roller 11 and the driving roller 4. The third gap is smaller than the second gap. The third driven roller 11 rotates relative to the driving roller 4. The mechanism also includes a drive mechanism 12, a drive gear 13, a driven gear 14, a driven gear 15, and a driven gear 16. The drive mechanism 12 is mounted on the crushing box 1. The output shaft of the drive mechanism 12 is connected to the drive roller 4. The drive gear 13 is concentrically mounted on the end of the drive roller 4. The driven gear 14 is concentrically mounted on the end of the driven roller 5 and meshes with the drive gear 13. The driven gear 15 is concentrically mounted on the end of the driven roller 10 and meshes with the drive gear 13. The driven gear 16 is concentrically mounted on the end of the driven roller 11 and meshes with the drive gear 13.

[0025] The drive mechanism 12 drives the drive roller 4 to rotate, which in turn drives the drive gear 13 to rotate. The drive gear 13 meshes with the driven gear 14, causing the drive roller 4 and the driven roller 5 to rotate relative to each other. The drive gear 13 meshes with the driven gear 15, causing the drive roller 4 and the driven roller 10 to rotate relative to each other. The drive gear 13 meshes with the driven gear 16, causing the drive roller 4 and the driven roller 11 to rotate relative to each other. This allows the drive roller 4 and the driven roller 5, the drive roller 4 and the driven roller 10, and the drive roller 4 and the driven roller 11 to work together to process the raw material. After multiple crushing processes, before the unqualified particles are fed back to the drive roller 4 and driven roller 5 through the auger pipe 8, the drive roller 4 and driven roller 10 first crush the unqualified particles through gap 2. Since gap 2 is smaller than gap 1, the crushing effect on the unqualified particles is improved. After the unqualified particles are crushed again by the drive roller 4 and driven roller 15, they undergo a fourth crushing process through gap 3 between the drive roller 4 and driven roller 11. Since gap 3 is smaller than gap 2, the crushing effect on the unqualified particles is improved.

[0026] like Figures 1 to 7As shown, this utility model discloses a pulverizing device for producing pesticide suspensions. During operation, the raw material is first added to the upper part of the pulverizing chamber of the pulverizing box 1 through the feeding hopper 2, and falls onto the upper middle part of the driving roller 4 and the driven roller 5. The driving roller 4 and the driven roller 5 rotate relative to each other, causing the raw material to be crushed through the gap between them. The crushed particles then fall onto the screen plate 6, where the vibrating screen plate 6 sieves the particles. Qualified particles, after being sieved by the screen plate 6, fall to the bottom of the pulverizing chamber of the pulverizing box 1 and are discharged through the discharge pipe 3. Then, the unqualified particles that are not completely crushed slide down the screen plate 6 and fall into the collection chamber separated by the partition plate 7. The spiral blades 9 rotate in the auger tube 8, causing the spiral blades 9 to lift the unqualified particles in the collection chamber upward along the auger tube 8. The unqualified particles flow back to the upper part of the drive roller 4 through the output end of the auger tube 8. Finally, the unqualified particles are crushed and ground multiple times by the drive roller 4 and driven roller 2 10, drive roller 4 and driven roller 1 5, and drive roller 4 and driven roller 3 11, thereby realizing the automatic collection and recycling of unqualified particles.

[0027] The main functions achieved by this utility model are:

[0028] 1. It can automatically collect and recycle unqualified particles, improving crushing efficiency;

[0029] 2. It can crush substandard particles multiple times, improving the crushing effect;

[0030] 3. The pesticide suspension particles are screened by the vibrating sieve plate 6, which avoids clogging of the sieve holes and improves the screening efficiency.

[0031] The pulverizing device for pesticide suspension production of this utility model has common mechanical installation, connection, or setting methods. As long as it can achieve its beneficial effect, it can be implemented. The pulverizing box 1, feeding hopper 2, driving roller 4, driven roller 1 5, sieve plate 6, auger tube 8, spiral blade 9, driven roller 2 10, driven roller 3 11, drive mechanism 12, driving gear 13, driven gear 1 14, driven gear 2 15, driven gear 3 16, servo motor 17, drive gear 18, scraper 20, and sector-shaped driven gear 21 of this utility model are commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0032] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pulverizing device for producing pesticide suspension, comprising a pulverizing box (1), a feeding hopper (2), and a discharge pipe (3), wherein the pulverizing box (1) is provided with a pulverizing chamber inside, the feeding hopper (2) is installed on the pulverizing box (1), the output end of the feeding hopper (2) extends into the top of the pulverizing chamber of the pulverizing box (1), and the discharge pipe (3) is provided at the bottom of the pulverizing box (1), the discharge pipe (3) communicating with the bottom of the pulverizing chamber of the pulverizing box (1); characterized in that, It also includes a drive roller (4), a driven roller (5), a sieve plate (6), a partition plate (7), an auger pipe (8), and a spiral blade (9). The drive roller (4) and the driven roller (5) are rotatably installed in the middle of the crushing chamber of the crushing box (1). A gap for crushing raw materials is set between the drive roller (4) and the driven roller (5). The output end of the feeding hopper (2) faces the middle and above the drive roller (4) and the driven roller (5). The sieve plate (6) is installed at an angle in the lower part of the crushing chamber of the crushing box (1). The sieve plate (6) is located above the discharge pipe (3). The partition plate (7) Installed at the bottom of the crushing chamber of the crushing box (1), the partition (7) is located below the lower end of the sieve plate (6). The partition (7) divides the bottom of the crushing chamber of the crushing box (1) into a collection chamber, which is used to collect the unqualified particles screened by the sieve plate (6). The auger pipe (8) is installed in the crushing chamber of the crushing box (1). The input end of the auger pipe (8) extends into the collection chamber separated by the partition (7). The spiral blade (9) is rotatably installed in the auger pipe (8). The output end of the auger pipe (8) faces the middle and above the driven roller (5) and the driving roller (4).

2. The pulverizing device for producing pesticide suspensions as described in claim 1, characterized in that, It also includes a driven roller 2 (10), which is rotatably installed on the upper part of the crushing chamber of the crushing box (1). The driven roller 2 (10) is located above the driving roller (4). A gap 2 is provided between the driven roller 2 (10) and the driving roller (4). The gap 2 is smaller than the gap 1 between the driving roller (4) and the driven roller 1 (5). The driven roller 2 (10) rotates relative to the driving roller (4).

3. The pulverizing device for producing pesticide suspensions as described in claim 2, characterized in that, It also includes a driven roller three (11), which is rotatably installed in the middle of the crushing chamber of the crushing box (1). The driven roller three (11) is located below the middle of the driving roller (4) and the driven roller one (5). A gap three is provided between the driven roller three (11) and the driving roller (4), which is smaller than the gap two. The driven roller three (11) rotates relative to the driving roller (4).

4. The pulverizing device for producing pesticide suspensions as described in claim 3, characterized in that, It also includes a drive mechanism (12), a drive gear (13), a driven gear one (14), a driven gear two (15) and a driven gear three (16). The drive mechanism (12) is mounted on the crushing box (1). The output shaft of the drive mechanism (12) is connected to the drive roller (4) for transmission. The drive gear (13) is concentrically mounted on the end of the drive roller (4). The driven gear one (14) is concentrically mounted on the end of the driven roller one (5). The driven gear one (14) meshes with the drive gear (13). The driven gear two (15) is concentrically mounted on the end of the driven roller two (10). The driven gear two (15) meshes with the drive gear (13). The driven gear three (16) is concentrically mounted on the end of the driven roller three (11). The driven gear three (16) meshes with the drive gear (13).

5. The pulverizing device for producing pesticide suspensions as described in claim 1, characterized in that, It also includes a servo motor (17), a drive gear (18), a rotating shaft (19), a scraper (20), and a sector-shaped driven tooth (21). The servo motor (17) is mounted on the crushing box (1). The drive gear (18) is concentrically mounted on the output shaft of the servo motor (17). The rotating shaft (19) is rotatably mounted in the crushing chamber of the crushing box (1). The scraper (20) is mounted on the rotating shaft (19). The outer edge of the scraper (20) scrapes against the lower surface of the driven roller (5) or the driving roller (4). The sector-shaped driven tooth (21) is mounted on the rotating shaft (19) and meshes with the drive gear (18).

6. The pulverizing device for producing pesticide suspensions as described in claim 1, characterized in that, It also includes a drive disc (22), a connecting rod (23), a push rod (24), and a support rod (25). The drive disc (22) is concentrically mounted on the lower end of the rotating shaft of the spiral blade (9). The drive disc (22) is located below the crushing box (1). One end of the connecting rod (23) is rotatably connected to the edge of the drive disc (22) through a rotating shaft. The other end of the connecting rod (23) is rotatably connected to the outer end of the push rod (24). The push rod (24) is slidably inserted into the bottom outer wall of the crushing box (1). The inner end of the push rod (24) extends into the lower part of the crushing chamber of the crushing box (1). The inner end of the push rod (24) is rotatably connected to the lower end of the driven gear (15). The upper end of the driven gear (15) is rotatably connected to the sieve plate (6). The support rod (25) is located below the sieve plate (6).

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