A pesticide suspension agent grinding and filtering device and method

Abstract

This invention discloses a grinding and filtering device and method for pesticide suspensions, belonging to the field of grinding devices. The device includes a body with a grinding cylinder connected to it. A stirring shaft is rotatably connected inside the grinding cylinder. The grinding cylinder is placed horizontally, and a first semi-cylinder is slidably connected to its bottom wall. Multiple partitions are fixedly connected to the first semi-cylinder, and the partitions are in contact with the inner wall of the first semi-cylinder, forming a cavity for accommodating grinding media. A spiral cooling channel is formed inside the wall of the grinding cylinder. When the stirring shaft speed increases, the flow rate and volume of the cooling media in the spiral cooling channel increase, and the first semi-cylinder slides, causing the upper and side parts of the cavity to open, thereby further releasing grinding media into the grinding cylinder. This device can adjust the amount of grinding media according to the grinding progress of the pesticide suspension to improve the grinding effect.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, specifically to a grinding and filtering device and method for pesticide suspensions. Background Technology

[0002] Pesticide suspensions, as an important pesticide formulation, have advantages such as good dispersibility, high efficacy, and low environmental pollution, and are widely used in agricultural production. In the production process of pesticide suspensions, grinding and filtration are key steps, and their efficiency and quality directly affect the product's performance and production costs.

[0003] Traditional pesticide suspension grinding and filtration devices have many shortcomings in terms of grinding efficiency. In the initial stage of grinding, due to the large size and severe agglomeration of material particles, if the grinding equipment speed is too high, it will lead to excessive equipment load, increased energy consumption, and may also generate too much heat, affecting the stability and performance of the pesticide suspension. On the other hand, if the speed is too low, it will not be able to effectively break and disperse large particles, resulting in low grinding efficiency, excessive grinding time, and reduced production efficiency.

[0004] As the grinding process progresses, the material particles gradually become smaller, requiring more grinding media to participate in the grinding process to increase the grinding speed. However, in traditional equipment, the amount of grinding media is difficult to adjust dynamically during the grinding process, and the grinding media cannot be increased in a timely manner according to the actual grinding conditions of the material, making it difficult to further improve the grinding efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a grinding and filtering device and method for pesticide suspensions, which solves the problem that the amount of grinding media in existing devices is difficult to dynamically adjust during the grinding process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pesticide suspension grinding and filtering device, comprising a body, a grinding cylinder connected to the body, a stirring shaft rotatably connected inside the grinding cylinder, the grinding cylinder being placed horizontally, and a first semi-cylinder slidably connected to the bottom wall of the grinding cylinder, and a plurality of partitions fixedly connected thereto, the plurality of partitions being in contact with the inner wall of the first semi-cylinder, and a receiving cavity for accommodating grinding media being formed between the plurality of partitions;

[0007] The grinding cylinder has a spiral cooling channel inside its wall. When the stirring shaft speed increases, the flow rate and volume of the cooling medium in the spiral cooling channel increase, and the first semi-cylinder slides, causing the upper and side parts of the receiving cavity to open, thereby further releasing the grinding medium into the grinding cylinder.

[0008] Preferably, a first water pump is fixedly connected to the machine body, and a rotating shaft is fixedly connected to the stirring shaft, with the pump shaft of the first water pump being drivenly connected to the rotating shaft;

[0009] The first water pump is connected to an inlet pipe and an outlet pipe. The outlet pipe is linearly arrayed with multiple branch pipes, all of which are connected to the spiral cooling channel. When the rotational speed of the shaft increases, the multiple branch pipes are sequentially connected to the outlet pipe in a direction away from the first water pump, thereby increasing the flow rate and volume of the cooling medium in the spiral cooling channel.

[0010] Preferably, a slide block is fixedly connected to the grinding cylinder, and a rectangular rod is slidably connected inside the slide block. Valves are provided at the connection points of the multiple branch pipes and the water outlet pipe. Gears are fixedly connected to the valve stems of the valves, and teeth that mesh with the multiple gears are provided on the rectangular rod. When the rotational speed of the shaft increases, the multiple teeth mesh with the corresponding gears in sequence in the direction away from the first water pump.

[0011] Preferably, a circular plate is fixedly connected to the pump shaft, and multiple arc-shaped plates are hinged in a circular array on the circular plate. Each end of the multiple arc-shaped plates is fixedly connected to a sliding rod. Multiple arc-shaped grooves that cooperate with the multiple sliding rods are opened on the circular plate. Elastic pull ropes are connected to the multiple sliding rods and the circular plate near the circular position. When the rotational speed of the pump shaft increases, the multiple arc-shaped plates can overcome the tension of the elastic pull ropes and swing outward from the circular plate, so that the arc-shaped plates can push the rectangular rod to slide away from the first water pump.

[0012] Preferably, a pin is vertically slidably connected to the slide block, and a tension spring is fixedly connected between the pin cap of the pin and the slide block. The rectangular rod has multiple positioning grooves arranged in a linear array to cooperate with the pin.

[0013] Preferably, a drain pipe is connected to the spiral cooling channel, and a second water pump is connected to the drain pipe. When the rectangular rod slides away from the first water pump, the pumping speed of the second water pump increases.

[0014] Preferably, a sliding switch for controlling the pumping speed of the second water pump is fixedly connected to the slide block, and the slider of the sliding switch is connected to the rectangular rod.

[0015] Preferably, the rectangular rod is provided with a protrusion, the slider is provided with a groove that mates with the protrusion, and the groove and the protrusion are filled with elastic rubber.

[0016] Preferably, an active cylinder is fixedly connected to the slide block, a passive cylinder is fixedly connected to the grinding cylinder, an air pipe connects the active cylinder and the passive cylinder, and the output end of the passive cylinder is fixedly connected to the first semi-cylinder.

[0017] A method for grinding and filtering pesticide suspensions, applied to a pesticide suspension grinding and filtering device, includes the following steps:

[0018] Add the pesticide suspension to be ground into the grinding cylinder, rotate the stirring shaft, and grind the pesticide suspension inside the grinding cylinder in conjunction with the grinding media inside the grinding cylinder;

[0019] The rotation speed of the stirring shaft is gradually increased. As the rotation speed of the stirring shaft increases, the pumping speed of the first water pump connected to it increases, thereby increasing the flow rate and velocity of the cooling medium in the spiral cooling channel, so that the temperature of the pesticide suspension in the grinding cylinder can be controlled under the rapid stirring and grinding state.

[0020] As the pumping speed of the first water pump increases, multiple branch pipes are connected to the outlet pipe in a linear direction in sequence, allowing the cold medium to enter from different positions in the spiral cooling channel, thereby improving the heat exchange effect.

[0021] When multiple branch pipes are connected to the outlet pipe, the sliding of the first semi-cylinder causes the upper and side parts of the receiving cavity to open, thereby releasing the grinding media in the receiving cavity. As the stirring shaft speed increases, the amount of grinding media in the grinding cylinder also increases, further improving the grinding speed.

[0022] The pesticide suspension, after being ground and refined inside the grinding drum, is discharged from the grinding drum through filtration under the action of centrifugal force.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] This invention increases the grinding speed of pesticide suspension by gradually increasing the rotation speed of the shaft as grinding progresses. Simultaneously, the flow rate and volume of the cooling medium in the spiral cooling channel increase, and the first semi-cylinder slides, causing the upper and side parts of multiple receiving cavities to open in sequence. This allows the grinding medium in the receiving cavities to enter the grinding cylinder to participate in grinding, increasing the amount of grinding medium. Combined with the increase and increase in the cooling medium volume and speed in the spiral cooling channel, the grinding temperature is controlled while the grinding speed is increased. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the grinding cylinder of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the stirring shaft of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure at the partition of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the slide of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the slide bar in this invention;

[0031] Figure 7 This is a schematic diagram of the structure of the arc-shaped plate in this invention;

[0032] Figure 8 This is a schematic diagram of the structure of the sliding switch in this invention.

[0033] In the diagram: 100, machine body; 110, first motor; 120, feeding hopper; 130, feed pipe; 140, discharge pipe; 200, grinding cylinder; 210, rotating shaft; 211, stirring shaft; 220, passive cylinder; 230, first semi-cylinder; 240, partition plate; 250, receiving cavity; 260, second semi-cylinder; 270, centrifugal filter screen; 300, first water pump; 301, water inlet pipe; 310, water outlet pipe; 320, branch pipe; 330, valve. Door; 340, Gear; 350, Rectangular rod; 351, Positioning groove; 352, Pin; 353, Tension spring; 360, Pump shaft; 370, Circular plate; 371, Arc-shaped slide groove; 380, Arc-shaped plate; 381, Slide rod; 382, ​​Elastic pull rope; 390, Slide seat; 400, Second water pump; 410, Drain pipe; 420, Second motor; 430, Slide switch; 440, Sliding plate; 450, Protrusion; 460, Active cylinder; 470, Air pipe. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figures 1-8This embodiment provides a technical solution: a pesticide suspension grinding and filtering device, including a body 100, a grinding cylinder 200 connected to the body 100, a stirring shaft 211 rotatably connected inside the grinding cylinder 200, the grinding cylinder 200 being placed horizontally, and a first semi-cylinder 230 being slidably connected to the bottom wall of the grinding cylinder 200 and a plurality of partitions 240 being fixedly connected, the plurality of partitions 240 being in contact with the inner wall of the first semi-cylinder 230, and a receiving cavity 250 for containing grinding media being formed between the plurality of partitions 240; a spiral cooling channel is formed inside the wall of the grinding cylinder 200, when the rotation speed of the stirring shaft 211 increases, the flow rate and flow rate of the cooling medium in the spiral cooling channel increase, and the first semi-cylinder 230 slides, causing the upper part and the side of the receiving cavity 250 to open, thereby further releasing the grinding medium into the grinding cylinder 200.

[0036] A first motor 110 for driving the rotating shaft 210 to rotate is connected to the machine body 100. The feeding hopper 120 is connected to the machine body 100 and is connected to the grinding cylinder 200 through the feeding pipe 130. The pesticide suspension to be ground is put into the feeding hopper 120 so that the pesticide suspension enters the grinding cylinder 200.

[0037] The first motor 110 is started to drive the rotating shaft 210 to rotate, thereby rotating the stirring shaft 211 connected to the rotating shaft 210. This, in conjunction with the grinding media pre-placed in the grinding cylinder 200, grinds and breaks down the pesticide suspension in the grinding cylinder 200. The grinding media can be glass beads, zirconium oxide beads, etc.

[0038] The initial rotation speed of the shaft 210 is relatively slow, which provides suitable grinding for the pesticide suspension that is initially agglomerated in the grinding cylinder 200, ensuring that the pesticide suspension is ground without overheating. As grinding proceeds, the control system gradually increases the rotation speed of the shaft 210 to improve the grinding speed of the pesticide suspension. At the same time as the rotation speed of the shaft 210 increases, the flow rate and volume of the cooling medium in the spiral cooling channel also increase. Furthermore, the first semi-cylinder 230 slides, causing the upper and side parts of the multiple receiving cavities 250 to open sequentially. This allows the grinding medium in the receiving cavities 250 to enter the grinding cylinder 200 to participate in the grinding, increasing the amount of grinding medium. Combined with the increase and increase in the cooling medium in the spiral cooling channel, the grinding temperature is controlled while the grinding speed is improved.

[0039] The pesticide suspension inside the grinding cylinder 200 is subjected to centrifugal force by the rotational grinding action of the stirring shaft 211. After being finely ground, the pesticide suspension is filtered through the centrifugal filter 270 and then discharged through the discharge pipe 140 connected to the centrifugal filter 270 for collection.

[0040] Reference Figure 5A first water pump 300 is fixedly connected to the body 100, and a rotating shaft 210 is fixedly connected to the stirring shaft 211. The pump shaft 360 of the first water pump 300 is drivenly connected to the rotating shaft 210. The first water pump 300 is connected to an inlet pipe 301 and an outlet pipe 310. Multiple branch pipes 320 are linearly arrayed on the outlet pipe 310. The multiple branch pipes 320 are all connected to a spiral cooling channel. When the rotation speed of the rotating shaft 210 increases, the multiple branch pipes 320 are connected to the outlet pipe 310 in sequence in the direction away from the first water pump 300, thereby increasing the flow rate and flow of the cooling medium in the spiral cooling channel.

[0041] Both the first water pump 300 and the rotating shaft 210 are connected to bevel teeth. The two bevel teeth mesh with each other, so that when the rotational speed of the rotating shaft 210 increases, the rotational speed of the first water pump 300 can be driven to increase synchronously, thereby allowing the cooling level to follow the grinding speed. The first water pump 300 draws cooling medium through the inlet pipe 301 and sends the cooling medium into the spiral cooling channel through the outlet pipe 310 and branch pipes 320. When the pumping speed of the first water pump 300 increases, multiple branch pipes 320 are sequentially connected to the outlet pipe 310 in the direction away from the first water pump 300, while the branch pipes closest to the first water pump 300 are connected to the outlet pipe 310. The branch pipe 320 of 00 is always connected to the outlet pipe 310, and this branch pipe 320 is connected to the water inlet end of the spiral cooling channel. As the pumping speed of the first water pump 300 increases, due to the different connection positions of multiple branch pipes 320 and the spiral cooling channel, cold zone medium can be injected into multiple positions of the spiral cooling channel. This allows the pesticide suspension in the middle of the grinding cylinder 200 and near its tail end to exchange heat with the cold zone medium just injected into the spiral cooling channel, thus improving the cooling effect of the pesticide suspension during rapid grinding.

[0042] Reference Figure 5 A slide block 390 is fixedly connected to the grinding cylinder 200. A rectangular rod 350 is slidably connected inside the slide block 390. Valves 330 are provided at the connection points of multiple branch pipes 320 and water outlet pipes 310. Gears 340 are fixedly connected to the valve stem of the valve 330. Teeth that mesh with multiple gears 340 are provided on the rectangular rod 350. When the rotation speed of the rotating shaft 210 increases, multiple teeth mesh with the corresponding gears 340 in sequence in the direction away from the first water pump 300.

[0043] In the initial state, the teeth of the rectangular rod 350 near the first water pump 300 mesh with the corresponding gear 340. The distance between the teeth and the corresponding gear 340 in the direction away from the first water pump 300 increases sequentially. As the rectangular rod 350 slides, it can drive the multiple valves 330 in the direction away from the first water pump 300 to open sequentially. After the corresponding teeth drive the corresponding gear 340 to rotate so that the corresponding valve 330 is fully opened, the teeth disengage from the meshing state with the corresponding gear 340, thus avoiding interference with the sliding of the rectangular rod 350.

[0044] Reference Figures 5-7 A circular plate 370 is fixedly connected to the pump shaft 360. Multiple arc-shaped plates 380 are hinged in a ring array on the circular plate 370. Each end of the multiple arc-shaped plates 380 is fixedly connected to a sliding rod 381. Multiple arc-shaped grooves 371 are provided on the circular plate 370 to cooperate with the multiple sliding rods 381. Elastic ropes 382 are connected to the multiple sliding rods 381 and the circular plate 370 near the circular position. When the rotational speed of the pump shaft 360 increases, the multiple arc-shaped plates 380 can overcome the tension of the elastic ropes 382 and swing outward from the circular plate 370. Thus, the arc-shaped plates 380 can push the rectangular rod 350 to slide away from the first water pump 300.

[0045] When the pump shaft 360 rotates, it drives the circular plate 370 fixedly connected to it to rotate synchronously. As the rotation speed of the pump shaft 360 increases, the centrifugal force on the arc plate 380 hinged to the circular plate 370 increases synchronously. When the circular plate 370 rotates, the arc plate 380 tends to swing towards the edge of the circular plate 370. When the centrifugal force increases, the arc plate 380 can overcome the tension of the elastic rope 382 and gradually increase the swing angle. As the swing angle of the arc plate 380 increases, the distance that the arc plate 380 can push the rectangular rod 350 to slide also gradually increases. This allows the rectangular rod 350 to slide when the pump speed of the first water pump 300 increases, thereby allowing multiple branch pipes 320 to be connected to the outlet pipe 310 in sequence.

[0046] Alternatively, the method of the arc plate 380 driving the rectangular rod 350 to slide can be replaced by the method of the sensor detecting the rotation of the pump shaft 360. An electric telescopic rod is set on the slide block 390, so that the output end of the electric telescopic rod is fixedly connected to the rectangular rod 350. After the control system obtains the sensor's detection of an increase in the rotational speed of the pump shaft 360, it controls the electric telescopic rod to extend, thereby driving the rectangular rod 350 to slide away from the first water pump 300.

[0047] Reference Figure 8 A pin 352 is vertically slidably connected to the slide 390. A tension spring 353 is fixedly connected between the pin cap of the pin 352 and the slide 390. Multiple positioning grooves 351 that cooperate with the pin 352 are linearly arrayed on the rectangular rod 350.

[0048] To ensure that the position of the rectangular rod 350 is fixed after sliding, when the pump shaft 360 changes from a fixed low speed to a fixed high speed, the swing angle of the arc plate 380 is maintained at a relatively fixed value. To prevent the rectangular rod 350 from continuing to slide due to the slight swing of the arc plate 380, when the pump shaft 360 increases its speed to a fixed value, the large-angle swing of the arc plate 380 pushes the rectangular rod 350 to slide, causing the pin 352 to disengage from the current positioning groove 351. As the rectangular rod 350 slides, the pin 352 can be inserted into the next positioning groove 351. With the tension applied to the pin 352 by the tension spring 353, the positioning effect of the pin 352 on the rectangular rod 350 is guaranteed.

[0049] Reference Figure 5 and Figure 8 A drain pipe 410 is connected to the spiral cooling channel, and a second water pump 400 is connected to the drain pipe 410. When the rectangular rod 350 slides away from the first water pump 300, the pumping speed of the second water pump 400 increases.

[0050] As the pumping speed of the first water pump 300 increases, the flow rate and velocity of the cold medium in the spiral cooling channel also increase, thereby increasing the pressure inside the spiral cooling channel. To avoid excessive pressure, the second water pump 400 applies suction force to the spiral cooling channel through the drain pipe 410, allowing the cold medium inside the spiral cooling channel to be discharged quickly, thus preventing the spiral cooling channel from rupturing due to excessive internal pressure.

[0051] Reference Figure 8 A sliding switch 430 for controlling the pumping speed of the second water pump 400 is fixedly connected to the slide 390, and the slide plate 440 of the sliding switch 430 is connected to the rectangular rod 350.

[0052] The second water pump 400 is driven to rotate by the second motor 420. When the rectangular rod 350 slides, it can drive the slider 440 of the sliding switch 430 to slide, thereby increasing the speed of the second motor 420 by the sliding switch 430, and thus increasing the pumping speed of the second water pump 400.

[0053] Reference Figures 6-8 The rectangular rod 350 is provided with a protrusion 450, and the slide plate 440 is provided with a slot that mates with the protrusion 450, and the slot and the protrusion 450 are filled with elastic rubber.

[0054] The slide plate 440 has sliding resistance. The elastic rubber between the protrusion 450 and the slot on the slide plate 440 allows the protrusion 450 to compress and deform the elastic rubber when the rectangular rod 350 slides slightly, so that the protrusion 450 will not drive the slide plate 440 to slide, thus ensuring the stability of the speed of the second motor 420.

[0055] Reference Figures 3-5 An active cylinder 460 is fixedly connected to the slide block 390, and a passive cylinder 220 is fixedly connected to the grinding cylinder 200. An air pipe 470 connects the active cylinder 460 and the passive cylinder 220, and the output end of the passive cylinder 220 is fixedly connected to the first semi-cylinder 230.

[0056] When the rectangular rod 350 slides, it can push the rod of the active cylinder 460 to shorten. The end of the rod of the active cylinder 460 is connected to the piston plate. The space between the rod and the piston plate is connected to the passive cylinder 220 through the air pipe 470. Thus, when the active cylinder 460 shortens, it can drive the passive cylinder 220 to shorten synchronously. At this time, the passive cylinder 220 drives the first semi-cylinder 230 to slide to release the grinding media in the receiving cavity 250.

[0057] A second semi-cylinder 260 is fixedly connected inside the grinding cylinder 200. The first semi-cylinder 230 slides inside the second semi-cylinder 260. The part of the passive cylinder 220 inside the grinding cylinder 200 is located inside the second semi-cylinder 260. The second semi-cylinder 260, the first semi-cylinder 230, and the partition 240 are all made of materials with high hardness and wear resistance, so as to resist the impact of the grinding media. Furthermore, the first semi-cylinder 230 and the second semi-cylinder 260 have arc-shaped outer walls, which also reduces the wear and impact amplitude caused by the grinding media.

[0058] A return spring is connected between the cylinder rod and the cylinder body of the active cylinder 460 and / or the passive cylinder 220. When the speed of the pump shaft 360 decreases, the return spring drives the active cylinder 460 or the passive cylinder 220 to reset, thereby causing the rectangular rod 350 to reset. At this time, the speed of the stirring shaft 211 decreases, and the grinding medium can sink to the bottom wall of the horizontally placed grinding cylinder 200. Some of the grinding medium falls into the receiving cavity 250 between the partitions 240. When the passive cylinder 220 resets, it drives the first semi-cylinder 230 to slide and reset, so that the grinding medium in the receiving cavity 250 is collected again for the next grinding operation of the grinding cylinder 200.

[0059] The grinding cylinder 200 can be configured with detachable ends to facilitate the emptying of internal residue and maintenance of internal components.

[0060] A method for grinding and filtering pesticide suspensions, applied to a pesticide suspension grinding and filtering device, includes the following steps:

[0061] Add the pesticide suspension to be ground into the grinding cylinder 200, and rotate the stirring shaft 211 to grind the pesticide suspension inside the grinding cylinder 200 in conjunction with the grinding media inside the grinding cylinder 200.

[0062] The rotational speed of the stirring shaft 211 is changed from slow to fast. When the rotational speed of the stirring shaft 211 increases, the pumping speed of the first water pump 300 connected to it increases, thereby increasing the flow rate and velocity of the cooling medium in the spiral cooling channel, so that the temperature of the pesticide suspension in the grinding cylinder 200 under rapid stirring and grinding is controlled.

[0063] As the pumping speed of the first water pump 300 increases, multiple branch pipes 320 are connected to the outlet pipe 310 in a linear direction, allowing the cold medium to enter from different positions in the spiral cooling channel, thereby improving the heat exchange effect.

[0064] When multiple branch pipes 320 are connected to the outlet pipe 310, the first semi-cylinder 230 slides, causing the upper and side parts of the receiving cavity 250 to open, thereby releasing the grinding medium in the receiving cavity 250. As the rotation speed of the stirring shaft 211 increases, the amount of grinding medium in the grinding cylinder 200 is also increased, further improving the grinding speed.

[0065] The pesticide suspension, after being ground and refined inside the grinding cylinder 200, is discharged from the grinding cylinder 200 through filtration under the action of centrifugal force.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pesticide suspension grinding and filtering device, comprising a body (100), characterized in that: A grinding cylinder (200) is connected to the body (100). A stirring shaft (211) is rotatably connected inside the grinding cylinder (200). The grinding cylinder (200) is placed horizontally, and a first semi-cylinder (230) is slidably connected to the bottom wall of the grinding cylinder (200). Multiple partitions (240) are fixedly connected to the bottom wall of the grinding cylinder (200). The multiple partitions (240) are in contact with the inner wall of the first semi-cylinder (230), and a receiving cavity (250) for receiving grinding media is formed between the multiple partitions (240). The grinding cylinder (200) has a spiral cooling channel inside its wall. When the rotation speed of the stirring shaft (211) increases, the flow rate and flow of the cooling medium in the spiral cooling channel increase, and the first semi-cylinder (230) slides, causing the upper and side parts of the receiving cavity (250) to open, thereby further releasing the grinding medium into the grinding cylinder (200). A first water pump (300) is fixedly connected to the body (100), and a rotating shaft (210) is fixedly connected to the stirring shaft (211). The pump shaft (360) of the first water pump (300) is drivenly connected to the rotating shaft (210). The first water pump (300) is connected to an inlet pipe (301) and an outlet pipe (310). The outlet pipe (310) is linearly arrayed with multiple branch pipes (320). All of the branch pipes (320) are connected to the spiral cooling channel. When the rotation speed of the shaft (210) increases, the multiple branch pipes (320) are connected to the outlet pipe (310) in sequence in a direction away from the first water pump (300), thereby increasing the flow rate and flow of the cooling medium in the spiral cooling channel. A slide block (390) is fixedly connected to the grinding cylinder (200), and a rectangular rod (350) is slidably connected inside the slide block (390). Valves (330) are provided at the connection points of the multiple branch pipes (320) and the water outlet pipe (310). A gear (340) is fixedly connected to the valve stem of the valve (330). The rectangular rod (350) is provided with teeth that mesh with the multiple gears (340). When the rotation speed of the rotating shaft (210) increases, the multiple teeth mesh with the corresponding gears (340) in sequence in the direction away from the first water pump (300). An active cylinder (460) is fixedly connected to the slide (390), and a passive cylinder (220) is fixedly connected to the grinding cylinder (200). An air pipe (470) connects the active cylinder (460) and the passive cylinder (220). The output end of the passive cylinder (220) is fixedly connected to the first semi-cylinder (230). A return spring is connected between the cylinder rod and the cylinder body of the active cylinder (460) and / or the passive cylinder (220). When the rotational speed of the pump shaft (360) decreases, the grinding medium can sink to the bottom wall of the horizontally placed grinding cylinder (200), and some of the grinding medium falls into the receiving cavity (250) between the partitions (240). When the passive cylinder (220) resets, it drives the first semi-cylinder (230) to slide and reset, so that the grinding medium in the receiving cavity (250) is collected again. A circular plate (370) is fixedly connected to the pump shaft (360). Multiple arc-shaped plates (380) are hinged in a circular array on the circular plate (370). Each end of the multiple arc-shaped plates (380) is fixedly connected to a sliding rod (381). Multiple arc-shaped grooves (371) are provided on the circular plate (370) to cooperate with the multiple sliding rods (381). Elastic pull ropes (382) are connected to the multiple sliding rods (381) and the circular plate (370) near the circular position. When the rotation speed of the pump shaft (360) increases, the multiple arc-shaped plates (380) can overcome the tension of the elastic pull ropes (382) and swing outward from the circular plate (370). Thus, the arc-shaped plates (380) can push the rectangular rod (350) to slide away from the first water pump (300).

2. The pesticide suspension grinding and filtering device according to claim 1, characterized in that: A pin (352) is vertically slidably connected to the slide (390). A tension spring (353) is fixedly connected between the pin cap of the pin (352) and the slide (390). Multiple positioning grooves (351) that cooperate with the pin (352) are linearly arrayed on the rectangular rod (350).

3. The pesticide suspension grinding and filtering device according to claim 2, characterized in that: A drain pipe (410) is connected to the spiral cooling channel, and a second water pump (400) is connected to the drain pipe (410). When the rectangular rod (350) slides away from the first water pump (300), the pumping speed of the second water pump (400) increases.

4. The pesticide suspension grinding and filtering device according to claim 3, characterized in that: A sliding switch (430) for controlling the pumping speed of the second water pump (400) is fixedly connected to the slide (390), and the slide plate (440) of the sliding switch (430) is connected to the rectangular rod (350).

5. The pesticide suspension grinding and filtering device according to claim 4, characterized in that: The rectangular rod (350) is provided with a protrusion (450), and the slide (440) is provided with a groove that cooperates with the protrusion (450), and the groove and the protrusion (450) are filled with elastic rubber.

6. A method for grinding and filtering pesticide suspensions, applied to the pesticide suspension grinding and filtering device described in claim 5, characterized in that, Includes the following steps: Add the pesticide suspension to be ground into the grinding cylinder (200), and rotate the stirring shaft (211) to grind the pesticide suspension inside the grinding cylinder (200) in conjunction with the grinding media inside the grinding cylinder (200). The rotational speed of the stirring shaft (211) is changed from slow to fast. When the rotational speed of the stirring shaft (211) increases, the pumping speed of the first water pump (300) connected to it increases, thereby increasing the flow rate and velocity of the cooling medium in the spiral cooling channel, so that the temperature of the pesticide suspension in the grinding cylinder (200) under the rapid stirring and grinding state can be controlled. As the pumping speed of the first water pump (300) increases, multiple branch pipes (320) are connected to the outlet pipe (310) in a linear direction, so that the cold medium enters from different positions of the spiral cooling channel, thereby improving the heat exchange effect. When multiple branch pipes (320) are connected to the outlet pipe (310), the first semi-cylinder (230) slides to open the upper and side parts of the receiving cavity (250), thereby releasing the grinding medium in the receiving cavity (250). As the rotation speed of the stirring shaft (211) increases, the amount of grinding medium in the grinding cylinder (200) is also increased, further improving the grinding speed. The pesticide suspension, after being ground and refined in the grinding cylinder (200), is discharged from the grinding cylinder (200) through filtration under the action of centrifugal force.

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