Classification filtering device for missible oil type pesticide

Abstract

The invention provides a missible oil type pesticide graded filtering device which comprises a pair of settling tanks, the tops of the settling tanks are connected with liquid inlet pipes, a connecting channel is fixedly connected between the settling tanks, and partition plates capable of being movably inserted into the settling tanks are installed in the connecting channel. The bottom of the settling tank is provided with a discharging pipe, the bottoms of the pair of settling tanks are fixedly connected with a pair of collecting boxes, the discharging pipe extends into the corresponding collecting box, and the extending pipe opening is sleeved and rotationally connected with an internal filter screen cylinder. The device adopts a form of a pair of settling tanks and a pair of collecting boxes, so that the other settling tank and the other collecting box can perform a graded filtering process while one tank body performs settling, the efficiency is high, settled matters can be further centrifugally filtered and collected, and the yield is increased.

Description

Technical Field

[0001] The invention relates to the technical field of pesticide preparation, in particular to a grading and filtering device for emulsifiable concentrate pesticides. Background Art

[0002] Emulsifiable concentrate pesticides are transparent liquids made from water-insoluble original pesticides, organic solvents such as benzene and xylene, and emulsifiers. If they are sealed and stored at room temperature for two years, they will generally not become turbid, stratify, or precipitate. When added to water, they will quickly and evenly disperse into an opaque emulsion. The characteristics of emulsifiable concentrates are: high efficacy, easy application, and relatively stable properties.

[0003] After the emulsifiable concentrate pesticide is mixed and prepared in a mixing tank, it needs to be discharged into a sedimentation tank for static sedimentation to allow the incompletely emulsified raw material particles to settle to the bottom, and then the supernatant is pumped out and filtered to obtain the emulsifiable concentrate pesticide. However, after the supernatant is pumped out, the sediment at the bottom often still contains a large amount of emulsifiable concentrate pesticide. Direct discharge wastes resources. How to collect the emulsifiable concentrate pesticide in the sediment is a problem that needs to be solved. Summary of the invention

[0004] In view of the above problems, the present invention provides a grading filtration device for emulsifiable concentrate pesticides. The device is in the form of a pair of sedimentation tanks and a pair of collecting boxes. While one tank is performing sedimentation, the other sedimentation tank and the collecting box are performing a grading filtration process. The device has high efficiency and can further perform centrifugal filtration and collection on the sediment to increase yield.

[0005] To solve the above problems, the technical solution adopted by the present invention is:

[0006] A graded filtering device for emulsifiable concentrate pesticides comprises a pair of sedimentation tanks, the tops of the pair of sedimentation tanks are connected with a liquid inlet pipe, a connecting channel is fixedly connected between the pair of sedimentation tanks, a partition that can be movably inserted into the sedimentation tank is installed in the connecting channel, the partition separates one of the sedimentation tanks and releases the separation of the other sedimentation tank at the same time, a feed pipe is provided at the bottom of the sedimentation tank, a pair of collecting boxes are fixedly connected to the bottom of the pair of sedimentation tanks, the feed pipe extends into the corresponding collecting boxes, and an internal filter screen cylinder is rotatably connected to the extended pipe mouth, the outer periphery of the internal filter screen cylinder is fixedly connected to a middle filter screen cylinder, and the outer periphery of the middle filter screen cylinder is fixedly An external filter screen cylinder is connected, and the apertures of the internal filter screen cylinder, the middle filter screen cylinder and the external filter screen cylinder decrease in sequence. The bottoms of the internal filter screen cylinder, the middle filter screen cylinder and the external filter screen cylinder are all open. A liftable debris discharge pipe is installed through the bottom of the collecting box. The upper end of the debris discharge pipe is located in the collecting box and is rotatably connected to a concave sealing base. The concave sealing base is used to seal the bottom openings of the internal filter screen cylinder, the middle filter screen cylinder and the external filter screen cylinder. A debris discharge port corresponding to the debris discharge pipe is provided at the center of the concave sealing base. A driving shaft is rotatably connected in the debris discharge pipe, and a docking mechanism that can dock with the driving shaft and rotate synchronously is installed in the internal filter screen cylinder.

[0007] Preferably, the inner walls opposite to each other of the pair of sedimentation tanks are provided with sealing ports communicating with the connecting channel, the partition is adapted to fit the sealing ports, and a cylinder fixedly connected to the partition is installed on the connecting channel.

[0008] Preferably, a valve is installed in the feed pipe, and a docking ring is fixedly connected to the top of the internal filter screen cylinder. The docking ring is sleeved on the feed pipe and rotatably connected thereto.

[0009] Preferably, a circle of annular liquid hopper is fixed on the top of the middle filter mesh cylinder, and a plurality of liquid inlet holes connected to the middle filter mesh cylinder are circumferentially arranged at the bottom of the annular liquid hopper. A liquid pump is installed on the side wall of the sedimentation tank, and the liquid suction end of the liquid pump extends into the sedimentation tank and is adjacent to the top of the partition. The liquid outlet end of the liquid pump is connected to an annular tube fixed on the top of the collecting box, and a plurality of liquid outlet pipes extending into the annular liquid hopper are arranged at the bottom of the annular tube.

[0010] Preferably, the bottom of the collecting box is inclined, and an oil outlet pipe is provided at the bottom of the inclined surface.

[0011] Preferably, a pair of hydraulic cylinders are fixedly installed at the bottom of the collection box, and the telescopic ends of the hydraulic cylinders are fixedly connected to connecting plates, and the connecting plates are fixedly connected to the debris discharge pipe.

[0012] Preferably, a debris discharge pipe extends from the lower end of the driving shaft, a motor is fixedly mounted on the bottom of the debris discharge pipe, and an output end of the motor is connected to the driving shaft via a pair of gear transmissions.

[0013] Preferably, the docking mechanism includes a fixing frame fixedly connected to the internal filter screen cylinder, a conical sealing seat is fixedly connected to the bottom of the fixing frame, the conical sealing seat is used to seal the impurity discharge port, the drive shaft extends out of the impurity discharge port, a docking groove is provided at the bottom of the conical sealing seat for inserting the upper end of the drive shaft, a circular cavity is provided in the upper end of the drive shaft, spherical limit heads are elastically connected to both ends of the circular cavity through springs, a limit groove is provided on the inner wall of the docking groove for adapting to the spherical limit head, and a controller electrically connected to the spring is installed on the impurity discharge pipe.

[0014] Preferably, a plurality of annular sealing surfaces are provided on the inclined surface of the concave sealing base, and the plurality of annular sealing surfaces are respectively adapted to the bottom openings of the internal filter mesh cylinder, the middle filter mesh cylinder and the external filter mesh cylinder. A through opening is provided at the bottom of the collecting box for the drainage pipe to pass through, and a sealing ring is installed in the through opening.

[0015] Preferably, fixed tubes are fixed on both sides of the drive shaft located in the impurity discharge port, the fixed tubes are fixedly connected to the concave sealing base and extend into it, three recoil tubes are fixed on the extended section of the fixed tube, the upper ends of the three recoil tubes extend out of the concave sealing base, and respectively fit the outside of the internal filter mesh cylinder, the middle filter mesh cylinder and the external filter mesh cylinder, the drive shaft is hollow, the lower end of the drive shaft is connected to a pump water pipe through a rotating joint, and the side wall of the recoil tube is provided with multiple recoil holes.

[0016] The beneficial effects of the present invention are:

[0017] 1. By installing a pair of sedimentation tanks and a pair of collection boxes, one tank can be used for sedimentation while the other sedimentation tank and collection box are used for graded filtration, which is highly efficient.

[0018] 2. By installing partitions and cylinders, the partition separates one of the sedimentation tanks while releasing the separation of the other sedimentation tank. After the sedimentation tank completes sedimentation, the partition is inserted into the tank to separate the sediment from the supernatant, avoiding the impurities at the junction being drawn out due to the action of water flow during the process of sucking the supernatant. Open the valve to discharge the sediment through the discharge pipe.

[0019] 3. By installing the internal filter screen cylinder, the middle filter screen cylinder, the external filter screen cylinder, the liquid pump, the annular liquid bucket, the drive shaft and the docking mechanism, the sediment flows into the internal filter screen cylinder, the motor is started, and the drive shaft is driven to rotate through a pair of gears, and then the internal filter screen cylinder, the middle filter screen cylinder, the external filter screen cylinder and the concave sealing base are driven to rotate synchronously through the docking mechanism and the fixed pipe. The sediment is thrown to the circumferential surface of the internal filter screen cylinder under the action of centrifugal force, and the excess emulsifiable pesticide inside is thrown into the middle filter screen cylinder through the mesh. At the same time, Start the liquid pump to pump the supernatant into the annular tube, and then flow into the rotating annular liquid bucket through the liquid outlet pipe, and finally flow into the middle filter screen cylinder through the liquid inlet hole. Under the action of centrifugal force, the collected emulsifiable concentrate pesticides are further filtered, and after filtration, they enter the next-level external filter screen cylinder for final filtration, which can completely filter out impurities in the emulsifiable concentrate pesticides. The internal filter screen cylinder, the middle filter screen cylinder, and the external filter screen cylinder are annular filters, which greatly increase the filtration area and have high filtration efficiency. The sediment can be further collected by centrifugal filtration to increase production.

[0020] 4. By installing the concave sealing base, the impurity discharge pipe, the docking mechanism and the hydraulic cylinder, the impurities accumulated in the internal filter cylinder, the middle filter cylinder and the external filter cylinder can be cleaned regularly. Just start the hydraulic cylinder, drive the impurity discharge pipe to descend through the connecting plate, and the concave sealing base will descend synchronously. The docking mechanism is separated from the drive shaft to separate it from the bottom opening of the internal filter cylinder, the middle filter cylinder and the external filter cylinder. The impurities collected in the internal filter cylinder, the middle filter cylinder and the external filter cylinder slide into the impurity discharge port through the annular concave surface and are finally discharged through the impurity discharge pipe, which is convenient for cleaning.

[0021] 5. By installing the recoil pipe and the docking mechanism, when the concave sealing base is separated from the internal filter screen cylinder, the middle filter screen cylinder, and the external filter screen cylinder, the spring is energized through the controller to shrink the spherical limit head and pull it back into the circular cavity, so as to separate the drive shaft from the conical sealing seat, so that the drive shaft alone drives the concave sealing base to rotate, and drives the recoil pipe to rotate around the outer wall of the internal filter screen cylinder, the middle filter screen cylinder, and the external filter screen cylinder. The water pump pipe continuously pumps water into the drive shaft, enters into multiple recoil pipes through the fixed pipe, and finally sprays out through multiple recoil holes, spraying water from the outside into the mesh, which can effectively wash away the impurities blocked in the hole and maintain a high-efficiency filtration state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 A cross-sectional view of the inner filter screen cylinder, the middle filter screen cylinder, the outer filter screen cylinder and the concave sealing base proposed by the present invention;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at point A;

[0025] Figure 4 A top view of the inner filter screen cartridge, the middle filter screen cartridge and the outer filter screen cartridge proposed by the present invention;

[0026] Figure 5 A top view of the concave sealing base proposed by the present invention;

[0027] Figure 6 It is a schematic diagram of the recoil state of the present invention.

[0028] In the figure: 1 liquid inlet pipe, 2 sedimentation tank, 3 partition, 4 cylinder, 5 connecting channel, 6 liquid pump, 7 annular pipe, 8 liquid outlet pipe, 9 feeding pipe, 10 annular liquid hopper, 11 concave sealing base, 12 collecting box, 13 drainage pipe, 14 hydraulic cylinder, 15 connecting plate, 16 motor, 17 gear, 18 pump water pipe, 19 driving shaft, 20 docking ring, 21 internal filter screen cylinder, 22 middle filter screen cylinder, 23 external filter screen cylinder, 24 recoil pipe, 25 fixed pipe, 26 drainage port, 27 conical sealing seat, 28 fixed frame, 29 annular sealing surface, 30 docking groove, 31 spherical limit head, 32 limit groove, 33 round cavity, 34 spring. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Reference Figure 1-6A graded filtering device for emulsifiable concentrate pesticides comprises a pair of settling tanks 2, the tops of the pair of settling tanks 2 are connected with a liquid inlet pipe 1, the liquid mixed in the mixing tank is discharged into the settling tank 2 through the liquid inlet pipe 1, a connecting channel 5 is fixedly connected between the pair of settling tanks 2, a partition 3 which can be movably inserted into the settling tank 2 is installed in the connecting channel 5, the opposite inner walls of the pair of settling tanks 2 are provided with sealing ports connected with the connecting channel 5, the partition 3 is adapted to the sealing port, a cylinder 4 fixedly connected with the partition 3 is installed on the connecting channel 5, the cylinder 4 is started to drive the partition 3 to move, the partition 3 separates one of the settling tanks 2 while releasing the separation of the other settling tank 2, while one settling tank 2 is settling, the other settling tank 2 and the collecting box 12 are performing a graded filtering process, and the efficiency is high.

[0032] A discharge pipe 9 is provided at the bottom of the sedimentation tank 2, and a valve is installed in the discharge pipe 9. A docking ring 20 is fixedly connected to the top of the internal filter screen cylinder 21, and the docking ring 20 is sleeved on the discharge pipe 9 and rotatably connected thereto. A pair of collecting boxes 12 are fixedly connected to the bottom of a pair of sedimentation tanks 2. The discharge pipe 9 extends into the corresponding collecting box 12, and an internal filter screen cylinder 21 is sleeved and rotatably connected at the extended pipe mouth. A middle filter screen cylinder 22 is sleeved and fixedly connected to the outer periphery of the internal filter screen cylinder 21, and an outer filter screen cylinder 23 is sleeved and fixedly connected to the outer periphery of the middle filter screen cylinder 22. The apertures of the internal filter screen cylinder 21, the middle filter screen cylinder 22 and the outer filter screen cylinder 23 decrease successively. The bottom of the collecting box 12 is inclined, and an oil outlet pipe is provided at the bottom of the inclined surface. A discharge pipe 13 extends from the lower end of the drive shaft 19, and a motor 16 is fixedly installed at the bottom of the discharge pipe 13. The output end of the motor 16 is connected to the drive shaft 19. The shafts 19 are connected by a pair of gears 17, and the motor 16 is started to drive the drive shaft 19 to rotate through the pair of gears 17, and then the internal filter screen cylinder 21, the middle filter screen cylinder 22, the external filter screen cylinder 23 and the concave sealing base 11 are synchronously driven to rotate synchronously through the docking mechanism and the fixed tube 25. The sediment is thrown to the circumferential surface of the internal filter screen cylinder 21 under the action of centrifugal force, and the excess emulsifiable concentrate pesticide inside is thrown into the middle filter screen cylinder 22 through the mesh. Under the action of centrifugal force, the collected emulsifiable concentrate pesticide is further filtered, and after filtration, it enters the external filter screen cylinder 23 of the next level for final filtration, which can completely filter out impurities in the emulsifiable concentrate pesticide. The internal filter screen cylinder 21, the middle filter screen cylinder 22, and the external filter screen cylinder 23 are annular filters, which greatly increase the filtration area and have high filtration efficiency. The sediment can be further centrifugally filtered and collected to increase the yield.

[0033] Furthermore, a circle of annular liquid hopper 10 is fixed on the top of the middle filter mesh cylinder 22, and a plurality of liquid inlet holes connected to the middle filter mesh cylinder 22 are circumferentially arranged at the bottom of the annular liquid hopper 10. A liquid pump 6 is installed on the side wall of the sedimentation tank 2. The liquid suction end of the liquid pump 6 extends into the sedimentation tank 2 and is adjacent to the top of the partition 3. The liquid outlet end of the liquid pump 6 is connected to an annular tube 7 fixed on the top of the collecting box 12. A plurality of liquid outlet pipes 8 extending into the annular liquid hopper 10 are arranged at the bottom of the annular tube 7. The liquid pump 6 is started to pump the supernatant into the annular tube 7, and then flows into the rotating annular liquid hopper 10 through the liquid outlet pipe, and finally flows into the middle filter mesh cylinder 22 through the liquid inlet hole, so that it undergoes two-stage filtration.

[0034] The bottoms of the inner filter screen cylinder 21, the middle filter screen cylinder 22 and the outer filter screen cylinder 23 are all open, and a liftable impurity discharge pipe 13 is installed through the bottom of the collection box 12. The upper end of the impurity discharge pipe 13 is located in the collection box 12 and is rotatably connected to a concave sealing base 11. The concave sealing base 11 is used to seal the bottom openings of the inner filter screen cylinder 21, the middle filter screen cylinder 22 and the outer filter screen cylinder 23. The center of the concave sealing base 11 is provided with an impurity discharge port 26 corresponding to the impurity discharge pipe 13. A pair of hydraulic cylinders 14 are fixedly installed at the bottom of the collection box 12. The hydraulic cylinder 1 The telescopic end of 4 is fixedly connected with a connecting plate 15, and the connecting plate 15 is fixedly connected to the impurity discharge pipe 13. The hydraulic cylinder 14 is started to drive the impurity discharge pipe 13 to descend through the connecting plate 15, and the concave sealing base 11 is synchronously descended. The docking mechanism is separated from the driving shaft 19, so that it is separated from the bottom opening of the internal filter screen cylinder 21, the middle filter screen cylinder 22 and the external filter screen cylinder 23. The impurities collected in the internal filter screen cylinder 21, the middle filter screen cylinder 22 and the external filter screen cylinder 23 slide into the impurity discharge port 26 through the annular concave surface, and are finally discharged through the impurity discharge pipe 13, which is convenient for cleaning.

[0035] Furthermore, a plurality of annular sealing surfaces 29 are provided on the inclined surface of the concave sealing base 11, and the plurality of annular sealing surfaces 29 are respectively adapted to the bottom openings of the internal filter mesh cylinder 21, the middle filter mesh cylinder 22 and the external filter mesh cylinder 23. The annular sealing surfaces 29 can resist the bottom opening to achieve sealing. A through opening for the drainage pipe 13 to pass through is provided at the bottom of the collecting box 12, and a sealing ring is installed in the through opening. The drainage pipe 13 remains sealed during the lifting process.

[0036] A driving shaft 19 is rotatably connected in the impurity discharge pipe 13, and a docking mechanism that can dock and rotate synchronously with the driving shaft 19 is installed in the internal filter screen cylinder 21. The docking mechanism includes a fixing frame 28 fixedly connected in the internal filter screen cylinder 21, and a conical sealing seat 27 is fixedly connected to the bottom of the fixing frame 28. The conical sealing seat 27 is used to seal the impurity discharge port 26. The driving shaft 19 extends out of the impurity discharge port 26. The bottom of the conical sealing seat 27 is provided with a docking groove 30 for inserting the upper end of the driving shaft 19. A circular cavity 33 is provided in the upper end of the driving shaft 19. Both ends of the circular cavity 33 are elastically connected with a spherical limit head 31 through a spring 34. The inner wall of the docking groove 30 is provided with a limit groove adapted to the spherical limit head 31 32. A controller electrically connected to the spring 34 is installed on the impurity discharge pipe 13. When separating, the spring 34 is energized through the controller to shrink the spherical limit head 32 and pull it back into the circular cavity 33, so as to separate the drive shaft 19 from the conical sealing seat 27, so that the drive shaft 19 can drive the concave sealing base 11 to rotate alone; when docking, after the drive shaft 19 is inserted into the docking groove 30, the spring 34 is powered off and reset, and the spherical limit head 32 pops out and rotates with the drive shaft 19. The spherical limit head 32 is automatically inserted into the limit groove 32, and the drive shaft 19 can drive the internal filter screen cylinder 21, the middle filter screen cylinder 22, and the external filter screen cylinder 23 to rotate synchronously through the conical sealing seat 27 and the fixing frame 28.

[0037] In addition, fixed pipes 25 are fixed on both sides of the drive shaft 19 located in the impurity discharge port 26. The fixed pipes 25 are fixedly connected to the concave sealing base 11 and extend therein. Three recoil pipes 24 are fixed on the extended section of the fixed pipe 25. The upper ends of the three recoil pipes 24 extend out of the concave sealing base 11 and are respectively attached to the outer sides of the internal filter screen cylinder 21, the middle filter screen cylinder 22 and the external filter screen cylinder 23. The drive shaft 19 is hollow, and the lower end of the drive shaft 19 is connected to the pump water pipe 18 through a rotating joint. The recoil pipe 24 The side wall is provided with a plurality of recoil holes. The separation of the driving shaft 19 and the conical sealing seat 27 enables the driving shaft 19 to drive the concave sealing base 11 to rotate alone, and drives the recoil pipe 24 to rotate around the outer walls of the inner filter mesh cylinder 21, the middle filter mesh cylinder 22 and the outer filter mesh cylinder 23. The water pump pipe 18 continuously pumps water into the driving shaft 19, enters the plurality of recoil pipes 24 through the fixed pipe 25, and finally sprays out through the plurality of recoil holes. Spraying water from the outside into the mesh can effectively wash away the impurities blocked in the holes and maintain a high-efficiency filtration state.

[0038] While one settling tank 2 is undergoing settling, another settling tank 2 and a collecting box 12 are undergoing a graded filtration process. The cylinder 4 is started to drive the partition 3 to move. The partition 3 separates one of the settling tanks 2 while releasing the separation of the other settling tank 2. After the settling of the settling tank 2 is completed, the partition 3 is inserted into the tank to separate the sediment from the supernatant. The valve is opened to discharge the sediment through the discharge pipe 9.

[0039] The sediment flows into the internal filter screen cylinder 21, the motor 16 is started, and the drive shaft 19 is driven to rotate through a pair of gears 17, and then the internal filter screen cylinder 21, the middle filter screen cylinder 22, the external filter screen cylinder 23 and the concave sealing base 11 are synchronously driven to rotate synchronously through the docking mechanism and the fixed tube 25. The sediment is thrown to the circumferential surface of the internal filter screen cylinder 21 under the action of centrifugal force, and the excess emulsifiable pesticide inside is thrown into the middle filter screen cylinder 22 through the mesh. At the same time, the liquid pump 6 is started to pump the supernatant into the annular tube 7, and then the liquid is discharged through the outlet. The liquid flows into the rotating annular liquid hopper 10 through the liquid inlet hole and finally flows into the middle filter screen cylinder 22. Under the action of centrifugal force, the collected emulsifiable concentrate pesticides are further filtered and then enter the external filter screen cylinder 23 of the next stage for final filtration, which can completely filter out the impurities in the emulsifiable concentrate pesticides. The internal filter screen cylinder 21, the middle filter screen cylinder 22 and the external filter screen cylinder 23 are annular filters, which greatly increase the filtration area and have high filtration efficiency. The filtered emulsifiable concentrate pesticides are collected by the collection box 12 and finally discharged through the oil outlet pipe.

[0040] To regularly clean the impurities accumulated in the internal filter screen cylinder 21, the middle filter screen cylinder 22, and the external filter screen cylinder 23, it is only necessary to start the hydraulic cylinder 14, drive the impurity discharge pipe 13 to descend through the connecting plate 15, and the concave sealing base 11 will descend synchronously, and the docking mechanism will be separated from the driving shaft 19 to separate it from the bottom opening of the internal filter screen cylinder 21, the middle filter screen cylinder 22 and the external filter screen cylinder 23. The impurities collected in the internal filter screen cylinder 21, the middle filter screen cylinder 22 and the external filter screen cylinder 23 will slide into the impurity discharge port 26 through the annular concave surface, and finally be discharged through the impurity discharge pipe 13, which is convenient to clean.

[0041] When the concave sealing base 11 is separated from the internal filter screen cylinder 21, the middle filter screen cylinder 22, and the external filter screen cylinder 23, the spring 34 is energized by the controller to shrink the spherical limit head 32 and pull it back into the circular cavity 33, so that the drive shaft 19 and the conical sealing seat 27 can be separated, so that the drive shaft 19 alone drives the concave sealing base 11 to rotate, and drives the recoil pipe 24 to rotate around the outer wall of the internal filter screen cylinder 21, the middle filter screen cylinder 22 and the external filter screen cylinder 23, and the water pump pipe 18 continuously pumps water into the drive shaft 19, enters the multiple recoil pipes 24 through the fixed pipe 25, and finally sprays out through the multiple recoil holes, spraying water from the outside into the mesh, which can effectively wash away the impurities blocked in the hole and maintain a high-efficiency filtration state.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A grading and filtering device for emulsifiable concentrate pesticides, comprising a pair of settling tanks (2), characterized in that: The tops of the pair of sedimentation tanks (2) are connected with a liquid inlet pipe (1), a connecting channel (5) is fixedly connected between the pair of sedimentation tanks (2), a partition (3) which is movably inserted into the sedimentation tank (2) is installed in the connecting channel (5), the partition (3) separates one of the sedimentation tanks (2) and releases the separation of the other sedimentation tank (2), a feed pipe (9) is provided at the bottom of the sedimentation tank (2), a pair of collection boxes (12) are fixedly connected at the bottom of the pair of sedimentation tanks (2), the feed pipe (9) extends into the corresponding collection boxes (12), and an internal filter screen cylinder (21) is rotatably connected to the extended pipe mouth, the outer periphery of the internal filter screen cylinder (21) is fixedly connected to a middle filter screen cylinder (22), the outer periphery of the middle filter screen cylinder (22) is fixedly connected to an external filter screen cylinder (23), the internal filter screen cylinder (2 1), the apertures of the middle filter screen cylinder (22) and the outer filter screen cylinder (23) decrease in sequence, the bottoms of the inner filter screen cylinder (21), the middle filter screen cylinder (22) and the outer filter screen cylinder (23) are all open, a liftable impurity discharge pipe (13) is installed through the bottom of the collection box (12), the upper end of the impurity discharge pipe (13) is located in the collection box (12) and is rotatably connected to a concave sealing base (11), the concave sealing base (11) is used to seal the bottom openings of the inner filter screen cylinder (21), the middle filter screen cylinder (22) and the outer filter screen cylinder (23), a impurity discharge port (26) corresponding to the impurity discharge pipe (13) is provided at the center of the concave sealing base (11), a drive shaft (19) is rotatably connected to the impurity discharge pipe (13), and a docking mechanism that can dock with the drive shaft (19) and rotate synchronously is installed in the inner filter screen cylinder (21).

2. The grading and filtering device for an emulsifiable concentrate pesticide according to claim 1, characterized in that: The opposite inner walls of the pair of sedimentation tanks (2) are each provided with a sealing port communicating with the connecting channel (5), the partition (3) is adapted to fit the sealing port, and a cylinder (4) fixedly connected to the partition (3) is mounted on the connecting channel (5).

3. A grading and filtering device for emulsifiable concentrate pesticide according to claim 1, characterized in that: A valve is installed in the feed pipe (9), and a docking ring (20) is fixedly connected to the top of the internal filter screen cylinder (21). The docking ring (20) is sleeved on the feed pipe (9) and rotatably connected thereto.

4. The grading and filtering device for an emulsifiable concentrate pesticide according to claim 1, characterized in that: A ring-shaped liquid hopper (10) is fixed on the top of the middle filter screen cylinder (22), and a plurality of liquid inlet holes connected to the middle filter screen cylinder (22) are arranged around the bottom of the ring-shaped liquid hopper (10). A liquid pump (6) is installed on the side wall of the sedimentation tank (2), and the liquid suction end of the liquid pump (6) extends into the sedimentation tank (2) and is adjacent to the top of the partition (3). The liquid outlet end of the liquid pump (6) is connected to an annular tube (7) fixed on the top of the collection box (12), and a plurality of liquid outlet pipes (8) extending into the annular liquid hopper (10) are arranged at the bottom of the annular tube (7).

5. The grading and filtering device for an emulsifiable concentrate pesticide according to claim 1, characterized in that: The bottom of the collecting box (12) is arranged to be inclined, and an oil outlet pipe is arranged at the bottom of the inclined surface.

6. The grading and filtering device for emulsifiable concentrate pesticide according to claim 1, characterized in that: A pair of hydraulic cylinders (14) are fixedly mounted on the bottom of the collection box (12); the telescopic ends of the hydraulic cylinders (14) are fixedly connected to connecting plates (15); and the connecting plates (15) are fixedly connected to the debris discharge pipe (13).

7. The grading and filtering device for emulsifiable concentrate pesticide according to claim 1, characterized in that: A waste pipe (13) extends from the lower end of the driving shaft (19), a motor (16) is fixedly mounted on the bottom of the waste pipe (13), and an output end of the motor (16) is connected to the driving shaft (19) via a pair of gears (17).

8. The grading and filtering device for emulsifiable concentrate pesticide according to claim 1, characterized in that: The docking mechanism comprises a fixing frame (28) fixedly connected to the inner filter screen cylinder (21); a conical sealing seat (27) is fixedly connected to the bottom of the fixing frame (28); the conical sealing seat (27) is used to seal the impurity discharge port (26); the drive shaft (19) extends out of the impurity discharge port (26); a docking groove (30) is provided at the bottom of the conical sealing seat (27) for the upper end of the drive shaft (19) to be inserted; a circular cavity (33) is provided in the upper end of the drive shaft (19); both ends of the circular cavity (33) are elastically connected to spherical limit heads (31) via springs (34); a limit groove (32) adapted to the spherical limit head (31) is provided on the inner wall of the docking groove (30); and a controller electrically connected to the spring (34) is installed on the impurity discharge pipe (13).

9. The grading and filtering device for emulsifiable concentrate pesticide according to claim 1, characterized in that: The concave sealing base (11) is provided with a plurality of annular sealing surfaces (29) on the inclined surface, and the plurality of annular sealing surfaces (29) are respectively adapted to the bottom openings of the inner filter screen cylinder (21), the middle filter screen cylinder (22) and the outer filter screen cylinder (23). The bottom of the collecting box (12) is provided with a through opening for the impurity discharge pipe (13) to pass through, and a sealing ring is installed in the through opening.

10. The grading and filtering device for emulsifiable concentrate pesticide according to claim 1, characterized in that: Fixed pipes (25) are fixed on both sides of the drive shaft (19) located in the impurity discharge port (26). The fixed pipes (25) are fixedly connected to the concave sealing base (11) and extend into the concave sealing base. Three recoil pipes (24) are fixed on the extended section of the fixed pipe (25). The upper ends of the three recoil pipes (24) extend out of the concave sealing base (11) and are respectively attached to the outer sides of the internal filter screen cylinder (21), the middle filter screen cylinder (22) and the external filter screen cylinder (23). The drive shaft (19) is hollow. The lower end of the drive shaft (19) is connected to the pump water pipe (18) through a rotating joint. The side wall of the recoil pipe (24) is provided with a plurality of recoil holes.

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