Device for filtering impurities in solution in pesticide production

Abstract

The invention relates to the technical field of pesticide filtration, in particular to a device for filtering impurities in a solution in pesticide production, which comprises a filter cartridge and a filter screen cartridge on the inner side of the filter cartridge, a support shell is fixed at one end of the inner side of the filter cartridge, and a rotary drum rotatably inserted in the support shell is fixed at one end of the filter screen cartridge; a first motor for driving the rotary drum to rotate is arranged on the inner side of the supporting shell; and a back-flushing cleaning mechanism is arranged on the inner side of the filter screen cylinder. Through operation of the back-flushing cleaning mechanism, high-speed airflow can be intermittently jetted from the inner side of the filter screen cylinder, and the air jetted at a high speed can apply impact force to impurities blocked in the filter holes in the side wall of the filter screen cylinder, so that the impurities blocked in the filter holes of the filter screen cylinder can be cleaned, and the filter capacity of the filter holes to insecticides is recovered; the long-time stable filtering function of the device is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of pesticide filtering, in particular to a device for filtering impurities in a solution during pesticide production. Background Art

[0002] Insecticides are used in agricultural production to kill insects in crops, thereby increasing crop yields. In order to ensure the purity of the insecticide solution during production, it is necessary to filter out impurity particles or unreacted solid raw materials mixed in the insecticide solution.

[0003] After searching, a Chinese patent with publication number: CN115708972A discloses a filtering and impurity removal device for rice insecticide production and a filtering method thereof, including a power machine, a rotating shaft fixedly installed through one end of the power machine output shaft, the rotating shaft penetrates the filter container and extends into the inner cavity of the filter container, a blade is fixedly installed on the outer surface of the rotating shaft at a position inside the filter container, a liquid outlet is opened at a position near the top of the outer surface of the filter container, and a filtering device is fixedly installed on the inner wall of the filter container below the liquid outlet.

[0004] Based on the above search and combined with actual problems, it is found that the existing filtering devices all filter impurities in the pesticide solution through the filter holes in the filter. Although the existing technology can reduce the adhesion of impurities on the surface of the filter by changing the shape and installation angle of the filter, there will inevitably be some solid impurities in the solution that are similar in size to the filter holes. Such impurities can easily get stuck on the inside of the filter holes. When the filter holes are blocked by a large amount of impurities, the filtering effect and efficiency of the filter will be seriously affected. Summary of the invention

[0005] The object of the present invention is to provide a device for filtering impurities in a solution during pesticide production to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is: a device for filtering impurities in a solution during the production of pesticides, comprising a filter cartridge and a filter screen cartridge inside the filter cartridge, wherein a support shell is fixed to one end of the inner side of the filter cartridge, a rotating drum rotatably inserted in the supporting shell is fixed to one end of the filter screen cartridge, and a first motor driving the rotating drum to rotate is arranged on the inner side of the supporting shell; a recoil cleaning mechanism is arranged on the inner side of the filter screen cartridge; the recoil cleaning mechanism comprises a fixed air pipe which passes through and is fixed in the supporting shell and rotatably cooperates with the inner side of the rotating drum, and an air pump arranged on the outer side of the filter cartridge, the air outlet end of the air pump is connected to one end of the fixed air pipe through a connecting pipe, one end of the fixed air pipe is connected to a diverter shell, and two jet mechanisms capable of intermittent jetting are symmetrically arranged at both ends of the diverter shell; impurity collecting mechanisms are arranged on the outer side of the filter screen cartridge at positions corresponding to the two jet mechanisms; a trigger mechanism capable of detecting the inner pressure thereof is arranged on the outer side of the filter cartridge.

[0007] Preferably, the jet mechanism includes an external fixed tube fixed to one end of the diverter shell, an internal rotating tube is rotatably connected to the inner side of the external fixed tube, a plurality of jet tubes are inserted into the side of the external fixed tube close to the filter cylinder, a plurality of jet holes are provided on the outer side of the internal rotating tube at the position corresponding to each jet tube, and one end of the internal rotating tube is connected to the inner side of the diverter shell through a plurality of connecting ports, and a bracket for supporting the external fixed tube and the inner rotating tube is fixed to one end of the inner side of the filter cylinder.

[0008] Preferably, friction wheels are fixed to both ends of the inner rotating tube, and the outer sides of the two friction wheels are tightly pressed against the inner side of the filter cylinder.

[0009] Preferably, an inner end of the inner rotating tube is slidably connected with an impact piston, and an end of the impact piston away from the connecting port is elastically connected to the inner end of the inner rotating tube via a force storage spring.

[0010] Preferably, a driven gear is fixed to the outer side of the rotating drum, and a driving gear meshing with the driven gear is fixed to the driving end of the first motor.

[0011] Preferably, one end of the filter cartridge close to the supporting shell is connected to a liquid inlet pipe, and the other end of the filter cartridge is connected to a liquid outlet pipe.

[0012] Preferably, the impurity collecting mechanism includes a collecting shell fixed to one side of the supporting shell and located at the outer side of the filter cylinder, the collecting shell is provided with an opening on one side close to the filter cylinder, and the inner side of the collecting shell is rotatably connected with a first rotating column and a second rotating column, a plurality of circumferentially arranged extrusion ridges are fixed to the outer side of the first rotating column, a number of collecting grooves equal to the number of extrusion ridges are provided on the outer side of the second rotating column, and an inner cavity is provided inside the second rotating column, each of the collecting grooves is connected to the inner cavity through a plurality of collecting groove through holes at the bottom, a second motor is installed at one end of the outer side of the collecting shell, and a driving end of the second motor is fixedly connected to one end of the first rotating column.

[0013] Preferably, a synchronous gear is fixed to one end of each of the first rotating column and the second rotating column, and the two synchronous gears are meshed with each other via teeth.

[0014] Preferably, the trigger mechanism includes an induction shell, the lower side of the induction shell is connected to the inner side of the filter cartridge through a plug-in tube, and the upper end of the induction shell is connected to a trigger cylinder, the inner side of the induction shell is elastically connected to a sensing diaphragm, the inner side of the trigger cylinder is slidably connected to a trigger piston and a switch piston arranged up and down, a top block is fixed on the upper side of the trigger piston, a travel switch is installed on the lower side of the switch piston, a spring pressure plate is movably provided on the inner side of the trigger cylinder at a position above the switch piston, an adjusting spring is elastically connected between the spring pressure plate and the switch piston, and the travel switch is electrically connected to the first motor, the air pump, and the second motor through a control circuit.

[0015] Preferably, an adjusting screw is inserted into the top end of the trigger cylinder through threaded rotation, and the lower end of the adjusting screw is rotationally connected to the upper side of the spring pressure plate.

[0016] The present invention provides an impurity filtering device for solution in pesticide production by improvement, which has the following improvements and advantages compared with the prior art: First, the present invention can detect the pressure of the pesticide inside the filter cylinder in real time through the trigger mechanism. When the pressure reaches a certain value, the travel switch inside it will be triggered. The travel switch can control the operation of the first motor through the control circuit to drive the filter cylinder to rotate. When the filter cylinder rotates, the impurities adhering to the outside thereof can fall off under the action of centrifugal force, thereby performing a preliminary cleaning of the filter cylinder. At the same time, the travel switch also controls the operation of the recoil cleaning mechanism through the control circuit, and can intermittently eject high-speed airflow from the inside of the filter cylinder. The high-speed ejected air can exert an impact force on the impurities clogged in the filter holes on the side walls of the filter cylinder, thereby cleaning the impurities clogged in the filter holes of the filter cylinder, thereby restoring the filter holes' ability to filter pesticides and ensuring the long-term stable filtering function of the device.

[0017] Secondly, the present invention has an impurity collecting mechanism located outside the filter cylinder and close to the jet mechanism. When the impurities blocked in the filter holes of the filter cylinder are flushed out by the backwash cleaning mechanism, they can float to the inside of the impurity collecting mechanism. The impurity collecting mechanism can collect the impurities that float in on the inside of the collecting tank to prevent the impurities from being re-mixed into the pesticide, thereby preventing the impurities from re-clogging the filter holes of the filter cylinder and ensuring the filtering effect of the filter cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the filter cartridge of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle; Figure 4 It is a schematic diagram of the structure inside the filter cylinder of the present invention; Figure 5 It is a schematic diagram of the disassembled structure of the filter cylinder and the jet mechanism in the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the disassembled structure of the jet mechanism in the present invention; Figure 8 It is a first cross-sectional structural schematic diagram of the impurity collecting mechanism in the present invention; Fig. 9 It is a second cross-sectional structural schematic diagram of the impurity collecting mechanism in the present invention; Fig.10 It is a third cross-sectional structural schematic diagram of the impurity collecting mechanism in the present invention.

[0020] Reference numerals: 1. Filter cartridge; 2. Filter screen cartridge; 3. Support shell; 4. Rotating drum; 5. Driven gear; 6. First motor; 7. Driving gear; 8. Liquid inlet pipe; 9. Liquid outlet pipe; 101. Fixed air pipe; 102. Air pump; 103. Connecting pipe; 104. Diverter shell; 105. External fixed pipe; 106. Internal rotating pipe; 107. Jet hole; 108. Jet pipe; 109. Connecting port; 110. Friction wheel; 111. Bracket; 112. Impact piston; 113. Accumulation spring; 201. Induction shell; 2 02, plug-in tube; 203, induction diaphragm; 204, trigger cylinder; 205, trigger piston; 206, top block; 207, switch piston; 208, travel switch; 209, adjustment spring; 210, spring pressure plate; 211, adjustment screw; 301, collection shell; 302, opening; 303, first rotating column; 304, second rotating column; 305, inner cavity; 306, collection tank; 307, collection tank through hole; 308, extrusion ridge; 309, second motor; 310, synchronous gear. DETAILED DESCRIPTION

[0021] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention provides an improved device for filtering impurities in a solution during pesticide production. The technical solution of the present invention is: like Figures 1 to 10 As shown, an embodiment of the present invention provides an impurity filtering device for a solution in pesticide production, comprising a filter cartridge 1 and a filter screen cartridge 2 inside the filter cartridge 1, a support shell 3 being fixed to one end of the inner side of the filter cartridge 1, a rotating drum 4 rotatably inserted in the inner side of the supporting shell 3 being fixed to one end of the filter screen cartridge 2, a first motor 6 driving the rotating drum 4 to rotate being arranged on the inner side of the supporting shell 3, a liquid inlet pipe 8 being connected to one end of the filter cartridge 1 close to the supporting shell 3, and a liquid outlet pipe 9 being connected to the other end of the filter cartridge 1; a recoil cleaning mechanism being arranged on the inner side of the filter screen cartridge 2; the recoil cleaning mechanism comprising a through-hole A fixed air pipe 101 is fixed inside the support shell 3 and rotatably cooperates with the inner side of the rotating drum 4, and an air pump 102 is arranged on the outer side of the filter cartridge 1. The air outlet end of the air pump 102 is connected to one end of the fixed air pipe 101 through a connecting pipe 103. One end of the fixed air pipe 101 is connected to a diverter shell 104. Two jet mechanisms that can intermittently jet are symmetrically arranged at both ends of the diverter shell 104; impurity collection mechanisms are arranged on the outer side of the filter cartridge 2 at the positions corresponding to the two jet mechanisms; and a trigger mechanism that can detect the inner pressure of the filter cartridge 1 is arranged on the outer side.

[0023] Furthermore, the jet mechanism includes an outer fixed tube 105 fixed to one end of the flow splitter shell 104, an inner rotating tube 106 is rotatably connected to the inner side of the outer fixed tube 105, a plurality of jet tubes 108 are inserted on the side of the outer fixed tube 105 close to the filter cylinder 2, a plurality of jet holes 107 are opened on the outer side of the inner rotating tube 106 at the position corresponding to each jet tube 108, and one end of the inner rotating tube 106 is connected to the inner side of the flow splitter shell 104 through a plurality of connecting ports 109 opened, a bracket 111 for supporting the outer fixed tube 105 and the inner rotating tube 106 is fixed to one end of the inner side of the filter cylinder 1, an impact piston 112 is slidably connected to one end of the inner side of the inner rotating tube 106, and one end of the impact piston 112 away from the connecting port 109 is elastically connected to one end of the inner side of the inner rotating tube 106 through a force storage spring 113, and friction wheels 110 are fixed to both ends of the inner rotating tube 106, and the outer sides of the two friction wheels 110 are pressed against the inner side of the filter cylinder 2; When each jet hole 107 is aligned with the jet pipe 108 at the corresponding position, the high-pressure air inside the inner rotating tube 106 can be sprayed toward the inner wall of the filter cylinder 2 through the jet pipe 108. The high-speed sprayed air can exert an impact force on the impurities blocked in the filter holes on the side wall of the filter cylinder 2, thereby cleaning the impurities blocked in the filter holes of the filter cylinder 2. When the jet hole 107 is not aligned with the jet pipe 108, the air inside the inner rotating tube 106 cannot be discharged, and the air pump 102 continues to operate to pump in air. At this time, the air pressure inside the inner rotating tube 106 in the jet mechanism gradually increases, and the high-pressure air will push the impact piston 112 located at one end of the inner rotating tube 106, so that The impact piston 112 moves toward the end of the inner rotating tube 106 and compresses the force storage spring 113. The force storage spring 113 can store elastic potential energy when it is compressed. As the inner rotating tube 106 rotates, when the jet hole 107 on the outside of the inner rotating tube 106 is aligned with the jet pipe 108 again, the high-pressure air inside the inner rotating tube 106 can be ejected outward through the jet pipe 108. At the same time, the force storage spring 113 can quickly release the elastic potential energy to push the impact piston 112 to move quickly in the opposite direction. The impact piston 112 applies additional instantaneous thrust to the air inside the inner rotating tube 106, thereby instantly increasing the pressure of the air ejected outward, thereby increasing the impact force of the high-pressure air on the filter cylinder 2.

[0024] Furthermore, a driven gear 5 is fixed to the outer side of the rotating drum 4, and a driving gear 7 meshing with the driven gear 5 is fixed to the driving end of the first motor 6; The operation of the first motor 6 can drive the driving gear 7 to rotate, and the driving gear 7 drives the driven gear 5 to rotate, thereby driving the rotating drum 4 to rotate, and the rotating drum 4 can drive the filter drum 2 to rotate, so that the impurities on the outside of the filter drum 2 can be thrown off.

[0025] Furthermore, the impurity collecting mechanism includes a collecting shell 301 fixed to one side of the supporting shell 3 and located at the outer side of the filter cylinder 2, an opening 302 is provided on one side of the collecting shell 301 close to the filter cylinder 2, and a first rotating column 303 and a second rotating column 304 are rotatably connected to the inner side of the collecting shell 301, a plurality of circumferentially arranged extrusion ribs 308 are fixed to the outer side of the first rotating column 303, a number of collecting grooves 306 equal to the number of the extrusion ribs 308 are provided on the outer side of the second rotating column 304, and an inner cavity 305 is provided inside the second rotating column 304, each collecting groove 306 is connected to the inner cavity 305 through a plurality of collecting groove through holes 307 at the bottom, a second motor 309 is installed at one end of the outer side of the collecting shell 301, a driving end of the second motor 309 is fixedly connected to one end of the first rotating column 303, and a synchronous gear 310 is fixed to one end of the first rotating column 303 and the second rotating column 304, and the two synchronous gears 310 are meshed with each other through teeth; When the impurities blocked in the filter holes of the filter cylinder 2 are flushed out by the backflushing cleaning mechanism, they can just float to the inner side of the impurity collecting mechanism, and the impurity collecting mechanism can collect the impurities that float in on the inner side of the collecting tank 306 to prevent the impurities from being mixed into the pesticide again, thereby preventing the impurities from blocking the filter holes of the filter cylinder 2 again, thereby ensuring the filtering effect of the filter cylinder 2.

[0026] Further, the trigger mechanism includes a sensing shell 201 (such as Figure 3 As shown in the figure, the lower side of the induction shell 201 is communicated with the inner side of the filter cartridge 1 through the plug-in tube 202, and the upper end of the induction shell 201 is connected with a trigger cylinder 204, the inner side of the induction shell 201 is elastically connected with a sensing diaphragm 203, the inner side of the trigger cylinder 204 is slidably connected with a trigger piston 205 and a switch piston 207 arranged up and down, a top block 206 is fixed on the upper side of the trigger piston 205, a travel switch 208 is installed on the lower side of the switch piston 207, and a spring pressure plate 210 is movably provided on the inner side of the trigger cylinder 204 at a position above the switch piston 207, an adjustment spring 209 is elastically connected between the spring pressure plate 210 and the switch piston 207, and the travel switch 208 is electrically connected with the first motor 6, the air pump 102, and the second motor 309 through a control circuit; The pressure of the insecticide solution inside the filter cartridge 1 can be detected by the trigger mechanism. When the filter holes of the filter cartridge 2 are blocked, the pressure of the insecticide solution inside the filter cartridge 1 will increase, thereby opening the travel switch 208 in the trigger mechanism, thereby controlling the operation of the recoil cleaning mechanism and the impurity collection mechanism to clean and collect impurities in the filter holes of the filter cartridge 2.

[0027] Furthermore, an adjusting screw 211 is inserted into the top of the trigger cylinder 204 through threaded rotation, and the lower end of the adjusting screw 211 is rotatably connected to the upper side of the spring pressure plate 210; By rotating the adjusting screw 211, the adjusting screw 211 drives the spring pressure plate 210 to move up and down. When the spring pressure plate 210 moves upward, it drives the switch piston 207 to move upward through the adjusting spring 209, thereby increasing the distance between the travel switch 208 and the trigger piston 205. Therefore, the trigger piston 205 requires a larger insecticide pressure to contact the travel switch 208 and trigger it. Conversely, when the spring pressure plate 210 is driven to descend, the distance between the travel switch 208 and the trigger piston 205 can be reduced, thereby facilitating the adjustment of the trigger sensitivity during use; when the top block 206 triggers the travel switch 208, it will continue to push the travel switch 208 and the switch piston 207 upward. At this time, the switch piston 207 can compress the adjusting spring 209, thereby preventing the top block 206 from damaging the travel switch 208.

[0028] Working principle: When in use, the insecticide solution is introduced into the inner side of the filter cylinder 1 through the liquid inlet pipe 8, hereinafter referred to as the insecticide, and then the insecticide flows into the inner side of the filter cylinder 2 through the several filter holes on the side wall of the filter cylinder 2, and then discharged through the liquid outlet pipe 9, and the impurities in the insecticide are blocked on the outer side of the filter cylinder 2, thereby achieving the filtration of the insecticide; The trigger mechanism is connected to the inner side of the filter cartridge 1 through the plug-in tube 202. Since the insecticide is blocked by the filter cartridge 2, the pressure of the insecticide in the space between the inner side of the filter cartridge 1 and the outer side of the filter cartridge 2 will be relatively high. The insecticide will enter the space below the sensing diaphragm 203 inside the sensing shell 201 through the plug-in tube 202. The space above the sensing diaphragm 203 inside the sensing shell 201 and the space below the trigger piston 205 inside the trigger cylinder 204 are filled with air. When the sensing diaphragm 203 is subjected to the pressure of the insecticide inside the filter cartridge 1, it will bulge and deform upward, thereby pushing the air inside the sensing shell 201 to flow to the inside of the trigger cylinder 204, so that the air can push the trigger piston 205 to move upward. As the filtering time increases, the outside of the filter cylinder 2 will block more impurities, and some impurities will block the filter holes on the side wall of the filter cylinder 2. When the number of blocked filter holes increases, the pressure of the insecticide on the outside of the filter cylinder 2 will increase. The increased pressure will cause the sensing diaphragm 203 in the trigger mechanism to bulge higher, thereby causing the trigger piston 205 to move up a higher stroke. When the insecticide pressure on the outside of the filter cylinder 2 reaches a certain value, the top block 206 in the trigger mechanism will contact the travel switch 208, thereby triggering the circuit inside the travel switch 208. The travel switch 208 controls the first motor 6, the air pump 102 of the recoil cleaning mechanism, and the second motor 309 of the impurity collection mechanism to run simultaneously through the control circuit; The operation of the first motor 6 can drive the driving gear 7 to rotate, and the driving gear 7 drives the driven gear 5 to rotate through the teeth, so that the rotating drum 4 rotates accordingly, and the rotating drum 4 drives the filter drum 2 to rotate. When the filter drum 2 rotates, it can drive the impurities blocked on the outside to rotate. The filter drum 2 can rotate at a constant speed, so that the impurities on the outside can fall off under the action of centrifugal force, which plays a role of automatic cleaning; When the air pump 102 of the recoil cleaning mechanism is in operation, the external air can be drawn into the inner side of the fixed air pipe 101 through the connecting pipe 103, and then the air flows into the inner side of the diverter shell 104 through the fixed air pipe 101, and then flows into the inner side of the inner rotating tube 106 through the multiple connecting ports 109 of the jet mechanism. Since the filter drum 2 rotates at a constant speed, the filter drum 2 can drive the friction wheel 110 of the recoil cleaning mechanism to rotate through friction, and the friction wheel 110 drives the inner rotating tube 106 to rotate, and the inner rotating tube 106 drives the multiple jet holes 107 on the outer side thereof to rotate. When each When the jet holes 107 are aligned with the jet pipes 108 at the corresponding positions, the high-pressure air in the inner rotating tube 106 can be ejected toward the inner wall of the filter cylinder 2 through the jet pipes 108. The high-speed ejected air can exert an impact force on the impurities blocked in the filter holes on the side walls of the filter cylinder 2, thereby cleaning the impurities blocked in the filter holes of the filter cylinder 2, thereby restoring the filter holes' ability to filter insecticides and ensuring the long-term stable filtering function of the device. When the jet holes 107 are not aligned with the jet pipes 108, the air in the inner rotating tube 106 cannot be discharged, and the air pump 102 The air is pumped in continuously, and the air pressure inside the inner rotating tube 106 in the jet mechanism gradually increases. The high-pressure air pushes the impact piston 112 located at one end of the inner rotating tube 106, so that the impact piston 112 moves toward the end of the inner rotating tube 106 and compresses the force storage spring 113. The force storage spring 113 can store elastic potential energy when it is compressed. As the inner rotating tube 106 rotates, when the jet hole 107 on the outside of the inner rotating tube 106 is aligned with the jet pipe 108 again, the high-pressure air inside the inner rotating tube 106 can be ejected outward through the jet pipe 108, and the force storage spring 113 can be compressed. The spring 113 can quickly release elastic potential energy to push the impact piston 112 to move in the reverse direction quickly. The impact piston 112 applies an additional instantaneous thrust to the air inside the inner rotating tube 106, thereby instantly increasing the pressure of the air ejected outward, thereby increasing the impact force of the high-pressure air on the filter cylinder 2, so that impurities inside the filter holes of the filter cylinder 2 are more easily removed. As the inner rotating tube 106 continues to rotate, the above-mentioned action is continuously repeated at a high frequency, so that the jet pipe 108 can intermittently eject high-speed airflow to the inner wall of the filter cylinder 2 at a high frequency, further improving the recoil cleaning effect on the filter cylinder 2; The second motor 309 of the impurity collecting mechanism is running, which can drive the corresponding first rotating column 303 to rotate. The first rotating column 303 drives the synchronous gear 310 at one end to rotate. The synchronous gear 310 drives another synchronous gear 310 to rotate in the opposite direction through the teeth, thereby driving the second rotating column 304 to rotate in the opposite direction. Fig. 9As shown, the first rotating column 303 drives the extrusion ridge 308 on its outer side to rotate counterclockwise, and the second rotating column 304 drives the collection groove 306 inside thereof to rotate clockwise. Under the meshing action of the two synchronous gears 310, the first rotating column 303 and the second rotating column 304 can keep rotating at the same speed in opposite directions. When the extrusion ridge 308 is aligned with the collection groove 306 respectively, the extrusion ridge 308 can extend into the inner side of the collection groove 306. Since the opening 302 is close to the position of the jet mechanism, the jet mechanism can move the impurities flushed out of the filter holes of the filter cylinder 2 to the inside of the opening 302. Since the first rotating column 303 and the second rotating column 304 rotate in opposite directions, the impurities enter the inner side of the collection groove 306 along with the insecticide, and at the same time, the extrusion ridge 308 extends into the corresponding When the inner side of the collecting groove 306 is formed, the insecticide containing impurities in the collecting groove 306 can be squeezed, and the insecticide is under pressure and flows into the inner side of the inner cavity 305 through the collecting groove through hole 307, and finally discharged to the inner side of the filter cartridge 1 through a port of the inner cavity 305, while the impurities cannot pass through the collecting groove through hole 307, and will be blocked on the inner side of the collecting groove 306. Under the wrapping effect of the collecting shell 301, the impurities in the collecting groove 306 are difficult to disperse outward, and at the same time, the convex strip 308 is squeezed to apply pressure on the impurities, so that the impurities can be pressed tightly against the inner wall of the collecting groove 306, thereby realizing the collection and processing of the impurities falling off the filter holes of the filter cartridge 2, preventing the impurities from being mixed into the insecticide again, thereby preventing the impurities from blocking the filter holes of the filter cartridge 2 again, and ensuring the filtering effect of the filter cartridge 2.

[0029] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for filtering impurities in a solution during pesticide production, comprising a filter cartridge (1) and a filter screen cartridge (2) inside the filter cartridge, characterized in that: A support shell (3) is fixed to one end of the inner side of the filter cartridge (1); a rotating drum (4) rotatably inserted in the interior of the support shell (3) is fixed to one end of the filter screen cartridge (2); and a first motor (6) for driving the rotating drum (4) to rotate is arranged on the inner side of the support shell (3); A backwash cleaning mechanism is provided on the inner side of the filter cylinder (2); The recoil cleaning mechanism comprises a fixed air pipe (101) which penetrates and is fixed inside the support shell (3) and is rotatably matched with the inner side of the rotating drum (4), and an air pump (102) which is arranged outside the filter cartridge (1); an air outlet end of the air pump (102) is connected to one end of the fixed air pipe (101) via a connecting pipe (103); one end of the fixed air pipe (101) is connected to a flow splitter shell (104); two jetting mechanisms capable of intermittent jetting are symmetrically arranged at both ends of the flow splitter shell (104); Impurity collection mechanisms are provided on the outer side of the filter cylinder (2) at positions corresponding to the two jetting mechanisms; The outer side of the filter cartridge (1) is provided with a trigger mechanism capable of detecting the pressure inside the filter cartridge (1).

2. The impurity filtering device for solution in pesticide production according to claim 1, characterized in that: The jet mechanism comprises an outer fixed tube (105) fixed to one end of a flow splitting shell (104); an inner rotating tube (106) is rotatably connected to the inner side of the outer fixed tube (105); a plurality of jet tubes (108) are inserted on a side of the outer fixed tube (105) close to the filter screen cartridge (2); a plurality of jet holes (107) are provided on the outer side of the inner rotating tube (106) at positions corresponding to each jet tube (108); one end of the inner rotating tube (106) is connected to the inner side of the flow splitting shell (104) through a plurality of connecting ports (109); and a bracket (111) for supporting the outer fixed tube (105) and the inner rotating tube (106) is fixed to one end of the inner side of the filter cartridge (1).

3. The impurity filtering device for solution in pesticide production according to claim 2, characterized in that: Friction wheels (110) are fixed to both ends of the inner rotating tube (106), and the outer sides of the two friction wheels (110) are tightly pressed against the inner side of the filter cylinder (2).

4. The impurity filtering device for solution in pesticide production according to claim 2, characterized in that: An inner end of the inner rotating tube (106) is slidably connected to an impact piston (112), and an end of the impact piston (112) away from the connecting port (109) is elastically connected to the inner end of the inner rotating tube (106) via a force storage spring (113).

5. The impurity filtering device for solution in pesticide production according to claim 1, characterized in that: A driven gear (5) is fixed to the outer side of the rotating drum (4), and a driving gear (7) meshing with the driven gear (5) is fixed to the driving end of the first motor (6).

6. The impurity filtering device for solution in pesticide production according to claim 1, characterized in that: One end of the filter cartridge (1) close to the support shell (3) is connected to a liquid inlet pipe (8), and the other end of the filter cartridge (1) is connected to a liquid outlet pipe (9).

7. The impurity filtering device for solution in pesticide production according to claim 1, characterized in that: The impurity collecting mechanism comprises a collecting shell (301) fixed to one side of the supporting shell (3) and located at an outer position of the filter cylinder (2); an opening (302) is provided on a side of the collecting shell (301) close to the filter cylinder (2); and a first rotating column (303) and a second rotating column (304) are rotatably connected on the inner side of the collecting shell (301); a plurality of circumferentially arranged extrusion ribs (308) are fixed to the outer side of the first rotating column (303); a number of collecting slots (306) equal to the number of the extrusion ribs (308) are provided on the outer side of the second rotating column (304); and an inner cavity (305) is provided inside the second rotating column (304); each of the collecting slots (306) is connected to the inner cavity (305) through a plurality of collecting slot through holes (307) at the bottom; and a second motor (309) is installed on one end of the outer side of the collecting shell (301); and a driving end of the second motor (309) is fixedly connected to one end of the first rotating column (303).

8. The impurity filtering device for solution in pesticide production according to claim 7, characterized in that: A synchronous gear (310) is fixed to one end of each of the first rotating column (303) and the second rotating column (304), and the two synchronous gears (310) are meshed with each other via teeth.

9. The impurity filtering device for solution in pesticide production according to claim 7, characterized in that: The trigger mechanism comprises a sensing shell (201), the lower side of the sensing shell (201) being in communication with the inner side of the filter cartridge (1) via a plug-in tube (202), and the upper end of the sensing shell (201) being connected to a trigger cartridge (204), the inner side of the sensing shell (201) being elastically connected to a sensing diaphragm (203), the inner side of the trigger cartridge (204) being slidably connected to a trigger piston (205) and a switch piston (207) arranged up and down, and a top piston (207) being fixed to the upper side of the trigger piston (205). A travel switch (208) is installed on the lower side of the switch piston (207), and a spring pressure plate (210) is movably provided on the inner side of the trigger cylinder (204) at a position above the switch piston (207). An adjustment spring (209) is elastically connected between the spring pressure plate (210) and the switch piston (207), and the travel switch (208) is electrically connected to the first motor (6), the air pump (102), and the second motor (309) through a control circuit.

10. The impurity filtering device for solution in pesticide production according to claim 9, characterized in that: An adjusting screw (211) is inserted into the top end of the trigger cylinder (204) through threaded rotation, and the lower end of the adjusting screw (211) is rotatably connected to the upper side of the spring pressure plate (210).

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