A device for pretreating and purifying pesticide production wastewater and an operating method thereof

Abstract

The application belongs to the technical field of wastewater purification, and particularly relates to a pesticide production wastewater pretreatment and purification device and an operation method thereof. The pesticide production wastewater pretreatment and purification device comprises a reaction kettle, a water inlet valve is fixedly connected to the outer wall of the reaction kettle, and a water outlet valve is fixedly connected to the outer wall of the reaction kettle and located below the water inlet valve. The pesticide production wastewater pretreatment and purification device and the operation method thereof are provided. The cooperation of the anticlockwise rotating top plate and the top block enables the reciprocating left and right movement of the plurality of piston plates. Under the reciprocating movement of the piston plates, the flocculant can be quantitatively and uniformly put into the wastewater, the flocculation effect of the flocculant on the wastewater is improved, the flocculant is directly extruded into the interior of the wastewater, the flocculant is prevented from contacting the foam on the water surface, the flocculant is prevented from being suspended on the liquid surface by being wrapped in the foam, and the first rotating shaft is rotated to drive the second rotating shaft to rotate, so that the pressing plate and the stirring blade are anticlockwise rotated, the wastewater and the flocculant are stirred, and the mixing of the flocculant and the wastewater is accelerated.

Description

Technical Field

[0001] This invention belongs to the field of wastewater purification technology, specifically a pretreatment and purification device and operating method for pesticide production wastewater. Background Technology

[0002] High-efficiency cyhalothrin microcapsule suspension is an environmentally friendly, slow-release pyrethroid insecticide. It consists of micron-sized microcapsules loaded with the active ingredient using a polymer resin as the wall material, and a suspension system prepared with water as the continuous phase. This agent relies on contact and stomach poison action to block the nerve conduction of pests. The capsule shell can block light decomposition, slowly releasing the active ingredient, significantly extending its effective period compared to traditional emulsifiable concentrates. During batch production changes of multiple varieties of high-efficiency cyhalothrin microcapsule suspension, residual pesticide slurry easily adheres to the inner walls of reaction vessels, milling equipment, and material conveying pipelines. Manufacturers generally use water rinsing to remove the residue, resulting in a large amount of process cleaning wastewater. To achieve water resource recycling, the industry conventionally uses wastewater purification equipment for pretreatment of the cleaning wastewater. Mainstream pretreatment processes include unit operations such as screen interception and flocculation sedimentation.

[0003] However, wastewater surfaces tend to accumulate large amounts of foam. After adding flocculants, the foam carries the flocculants and suspends them on the surface, making it difficult for the flocculants to dissolve in the water and exert their flocculation effect. This significantly reduces the effective utilization rate of the flocculants and limits the efficiency of wastewater pretreatment and purification. Furthermore, the interface between the flocs and the supernatant is blurred after flocculation and sedimentation, hindering the accurate extraction and reuse of treated water. In addition, the sludge flocs obtained after sedimentation have a high water content, containing a large amount of water. If the sludge is discarded directly, it will result in unnecessary waste of production water resources.

[0004] Therefore, the present invention provides a pretreatment and purification device and operating method for pesticide production wastewater. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the problems of significantly reduced effective utilization rate of existing flocculants and limited wastewater pretreatment and purification efficiency due to the difficulty of dissolving them in water, this invention proposes a pesticide production wastewater pretreatment and purification device and its operation method.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The pesticide production wastewater pretreatment and purification device of the present invention includes a reaction vessel, an inlet valve fixedly connected to the outer wall of the reaction vessel, a drain valve fixedly connected to the outer wall of the reaction vessel and below the inlet valve, a collar fixedly connected to the top of the reaction vessel, a storage chamber opened inside the collar, a feed inlet opened at the top of the collar, the feed inlet communicating with the storage chamber, a plurality of U-shaped tubes fixedly installed in a ring array on the inner wall of the collar, the bottom of the U-shaped tubes extending into the interior of the reaction vessel, a feeding assembly provided on the outer wall of the U-shaped tubes, a motor fixedly connected to the top of the reaction vessel, the output end of the motor extending into the interior of the reaction vessel and fixedly connected to a first rotating shaft, a second rotating shaft slidably connected to the inner wall of the first rotating shaft, a pressure plate fixedly connected to the bottom of the second rotating shaft, the top of the pressure plate being set as a ring-shaped inclined surface, and a plurality of stirring blades fixedly installed in a ring array on the top of the pressure plate.

[0007] Preferably, the feeding assembly includes a sleeve, which is fixedly installed on the outer wall of the U-shaped tube. Two first one-way valves are symmetrically fixedly connected to the inner wall of the U-shaped tube with the sleeve as the center. Both first one-way valves open from top to bottom. A piston plate is slidably connected to the inner wall of the sleeve. A piston rod is fixedly connected to one side of the piston plate. One end of the piston rod passes through the sleeve and is fixedly connected to a top block. The outer wall of the top block is set as a symmetrical inclined surface. A first spring is sleeved on the outer wall of the piston rod. One end of the first spring is fixedly connected to the top block, and the other end of the first spring is fixedly connected to the sleeve. A limit ring is rotatably connected to the outer wall of the first rotating shaft. A limit unit is provided inside the limit ring. Several top plates are fixedly connected in a ring array on the outer wall of the limit ring. The top plates cooperate with the top blocks.

[0008] Preferably, the limiting unit includes two first mounting slots, which are symmetrically opened inside the limiting ring. Each of the two first mounting slots has a locking block slidably connected to its inner wall. One side of the locking block is set as an inclined surface, and the other side of the locking block is fixedly connected to a second spring. The end of the second spring is fixedly connected to the limiting ring. The outer wall of the first rotating shaft has two symmetrically opened slots. The locking block fits against the inner wall of the slot. The elastic force of the first spring is greater than that of the second spring.

[0009] Preferably, a waste bin is threaded to the bottom of the reactor, and an installation ring is fixedly connected to the inner wall of the reactor below the casing. Several hydraulic cylinders are fixedly installed in a circular array at the bottom of the installation ring. The output ends of the several hydraulic cylinders are fixedly connected to a support ring. Several sliding shafts are slidably connected in a circular array on the inner wall of the support ring. Limit blocks are fixedly connected to the top of each of the several sliding shafts. A rotating ring is fixedly connected to the bottom of the several sliding shafts. The second rotating shaft is rotatably connected to the rotating ring. A third spring is sleeved on the outer wall of the sliding shaft. The bottom of the third spring is fixedly connected to the rotating ring, and the top of the third spring is fixedly connected to the support ring. A water squeezing assembly is provided inside the pressure plate.

[0010] Preferably, the water squeezing assembly includes a water inlet chamber, which is located at the bottom of the pressure plate. A filter plate is fixedly connected to the inner wall of the water inlet chamber. Several water outlet pipes are fixedly installed in a circular array on the top of the pressure plate. The bottom of the water outlet pipes extends into the interior of the water inlet chamber. A second one-way valve is fixedly connected to the inner wall of the water outlet pipes. The second one-way valve opens from bottom to top.

[0011] Preferably, a number of air pumps are fixedly installed in a ring array on the outer wall of the reactor. The input end of the air pump is fixedly connected to an air extraction pipe, and the output end of the air pump is fixedly connected to an air outlet pipe. The end of the air outlet pipe penetrates the side wall of the reactor and extends into the interior of the U-shaped tube.

[0012] Preferably, the bottom of each of the U-shaped tubes is fixedly connected to a guide pipe, and the guide pipe is configured to be arc-shaped.

[0013] Preferably, a plurality of supports are fixedly installed in a ring array on the inner wall of the reactor and below the mounting ring, and a fixing ring is fixedly connected to the plurality of supports. The fixing ring is provided with four sets of vibration components in a ring array inside.

[0014] Preferably, the vibration assembly includes a plurality of second mounting slots, which are sequentially formed inside the fixing ring from top to bottom. The inner wall of the second mounting slot is slidably connected with a protrusion. One side of the protrusion is set as a symmetrical inclined surface, and the other side of the protrusion is fixedly connected with a fourth spring. The end of the fourth spring is fixedly connected to the fixing ring, and the elastic force of the fourth spring is greater than that of the third spring.

[0015] An operating method for a pesticide production wastewater pretreatment and purification device, applicable to the aforementioned pesticide production wastewater pretreatment and purification device, the steps of which are as follows: S1: The wastewater generated from the production of high-efficiency cyhalothrin microcapsule suspension is injected into the reactor through the inlet valve. The motor is started to control the first rotating shaft to rotate counterclockwise, and flocculant is quantitatively added into the wastewater. S2: Start the hydraulic cylinder to control the pressure plate to insert downward into the waste bucket, squeeze the flocculent in the waste bucket, and then control the pressure plate to move upward to the top of the waste bucket, open the drain valve to discharge the supernatant after flocculation; S3: Start the hydraulic cylinder to control the rotating ring to move upward through the fixed ring, then control the rotating ring to move downward. With the cooperation of the vibration component, shake off the flocculent material adhering to the bottom of the pressure plate, unscrew the waste bucket from the bottom of the reactor, and clean the flocculent material inside.

[0016] The beneficial effects of this invention are as follows: 1. The pesticide production wastewater pretreatment and purification device and operating method of the present invention, wherein the first rotating shaft is controlled by a motor to rotate counterclockwise, and in conjunction with the limiting unit, the limiting ring and the top plate can be driven to rotate counterclockwise. Through the counterclockwise rotation of the top plate and the top block, several piston plates move back and forth. Under the reciprocating motion of the piston plates, the flocculant can be quantitatively and evenly added to the wastewater, thereby improving the flocculation effect of the flocculant on the wastewater. Furthermore, by directly squeezing the flocculant into the interior of the wastewater, the flocculant is prevented from contacting the foam on the water surface, thus preventing the foam from carrying the flocculant and suspending it on the liquid surface. At the same time as the first rotating shaft rotates, it can drive the second rotating shaft to rotate, causing the pressure plate and the stirring blade to rotate counterclockwise, thereby stirring the wastewater and the flocculant and accelerating the mixing of the flocculant and the wastewater.

[0017] 2. The pesticide production wastewater pretreatment and purification device and operating method of the present invention, wherein the first rotating shaft is controlled by a motor to rotate clockwise, so that the wastewater forms a vortex. After the flocs in the wastewater are formed, the stirring of the wastewater is stopped. After the stirring blades stop rotating, the centrifugal force gradually disappears, and the flocs precipitated in the wastewater gradually move towards the center and settle into the waste bin for accumulation. The pressure plate is controlled by a hydraulic cylinder to move downward and insert into the waste bin, which can block the flocs in the waste bin and avoid blurring the boundary between the flocs and the supernatant. When the supernatant is discharged by the drain valve, the flocs are discharged together.

[0018] 3. The pesticide production wastewater pretreatment and purification device and operation method of the present invention can squeeze the flocs through the pressure plate and filter plate, squeeze out the water inside the flocs, and the squeezed water enters the water inlet chamber through the filter plate and is discharged upward along the water outlet pipe. The discharged water falls to the top of the pressure plate through the second one-way valve. At this time, the pressure plate is controlled to move upward by the hydraulic cylinder. When the top of the pressure plate is level with the bottom of the reaction vessel, the squeezed water in the water outlet pipe can be discharged from the drain valve.

[0019] 4. The pesticide production wastewater pretreatment and purification device and operation method of the present invention control several air pumps to simultaneously blow air into a U-shaped tube through several air outlet pipes. After being blocked by the first one-way valve, the gas entering the U-shaped tube is discharged downward. The gas is guided by the guide pipe, so that the gas tilts and blows the bottom of the reaction vessel, thereby facilitating the cleaning of flocs adhering to the bottom of the reaction vessel and helping the flocs move to the waste bin.

[0020] 5. The pesticide production wastewater pretreatment and purification device and operating method of the present invention, by controlling the rotating ring to pass upward through the fixed ring by the hydraulic cylinder, controls the support ring to move downward and the rotating ring to move downward. With the cooperation of several protrusions and the rotating ring, the pressure plate is continuously vibrated downward, which facilitates the shaking off of flocs adhering to the bottom of the pressure plate, avoiding secondary pollution caused by the blackening and odor of the floc residue. Moreover, the vertical downward vibration can shake the flocs into the waste bucket, which is convenient for cleaning the flocs. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a perspective view of the reaction vessel and collar of the present invention in use; Figure 2 This is a perspective view of the reaction vessel and waste bin used in conjunction with the present invention; Figure 3 This is an exploded view of the U-shaped tube and the retaining ring used in conjunction with the present invention; Figure 4 This is a cross-sectional view of the pressure plate of the present invention used in conjunction with the waste bin; Figure 5 This is a perspective view of the fixing ring and pressure plate of the present invention in use; Figure 6 This is an exploded view of the top plate and top block of the present invention in use. Figure 7 This is a perspective view of the air outlet pipe and guide pipe of the present invention used together; Figure 8 This is an exploded view of the support ring and rotating ring of the present invention in use; Figure 9 This is an exploded view of the pressure plate of the present invention used in conjunction with the waste bin; Figure 10 This is a top sectional view of the limiting ring and the locking block of the present invention in use; Figure 11 This is a cross-sectional view of the pressure plate and stirring blade of the present invention in use; Figure 12 This is the present invention. Figure 4 Enlarged view of point A in the middle; Figure 13 This is the present invention. Figure 4 Enlarged view of point B in the middle.

[0023] In the diagram: 1. Reactor; 2. Inlet valve; 3. Drain valve; 4. Collar; 5. Storage chamber; 6. Inlet; 7. U-tube; 8. Motor; 9. First shaft; 10. Second shaft; 11. Pressure plate; 12. Stirring blade; 13. Sleeve; 14. First check valve; 15. Piston plate; 16. Piston rod; 17. First spring; 18. Top block; 19. Limiting ring; 20. First mounting groove; 21. Second spring; 22. Locking block; 23. Locking groove; 24. Top plate; 25. Waste bin; 26. Hydraulic cylinder; 27. Support ring; 28. Sliding shaft; 29. ​​Limiting block; 30. Third spring; 31. Rotary ring; 32. Water inlet chamber; 33. Filter plate; 34. Water outlet pipe; 35. Second check valve; 36. Air pump; 37. Air extraction pipe; 38. Air outlet pipe; 39. Guide pipe; 40. Bracket; 41. Fixing ring; 42. Second mounting groove; 43. Fourth spring; 44. Protrusion; 45. Mounting ring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figures 1 to 13As shown, the present invention provides a technical solution: a pretreatment and purification device for pesticide production wastewater, comprising a reaction vessel 1, an inlet valve 2 fixedly connected to the outer wall of the reaction vessel 1, a drain valve 3 fixedly connected to the outer wall of the reaction vessel 1 and below the inlet valve 2, a collar 4 fixedly connected to the top of the reaction vessel 1, a storage chamber 5 opened inside the collar 4, a feed inlet 6 opened at the top of the collar 4, the feed inlet 6 communicating with the storage chamber 5, and a plurality of U-shaped tubes 7 fixedly installed in a ring array on the inner wall of the collar 4, the bottom of the U-shaped tubes 7 extending into the interior of the reaction vessel 1, and a feeding assembly provided on the outer wall of the U-shaped tubes 7. A motor 8 is fixedly connected to the top of the reactor 1. The output end of the motor 8 extends into the interior of the reactor 1 and is fixedly connected to a first rotating shaft 9. A second rotating shaft 10 is slidably connected to the inner wall of the first rotating shaft 9. A pressure plate 11 is fixedly connected to the bottom of the second rotating shaft 10. The top of the pressure plate 11 is set as an annular inclined surface. Several stirring blades 12 are fixedly installed in an annular array on the top of the pressure plate 11. The feeding assembly includes a sleeve 13, which is fixedly installed on the outer wall of the U-shaped tube 7. Two first one-way valves 14 are symmetrically fixedly connected to the inner wall of the U-shaped tube 7 with the sleeve 13 as the center. All four openings are from top to bottom. A piston plate 15 is slidably connected to the inner wall of the sleeve 13. A piston rod 16 is fixedly connected to one side of the piston plate 15. One end of the piston rod 16 passes through the sleeve 13 and is fixedly connected to a top block 18. The outer wall of the top block 18 is set as a symmetrical inclined surface. A first spring 17 is sleeved on the outer wall of the piston rod 16. One end of the first spring 17 is fixedly connected to the top block 18, and the other end of the first spring 17 is fixedly connected to the sleeve 13. A limit ring 19 is rotatably connected to the outer wall of the first rotating shaft 9. A limit unit is set inside the limit ring 19, and the outer wall of the limit ring 19 is fixed in a ring array. Several top plates 24 are connected, and the top plates 24 are used in conjunction with the top blocks 18; the limiting unit includes two first mounting grooves 20, which are symmetrically opened inside the limiting ring 19. The inner walls of the two first mounting grooves 20 are slidably connected with a locking block 22. One side of the locking block 22 is set as an inclined surface, and the other side of the locking block 22 is fixedly connected with a second spring 21. The end of the second spring 21 is fixedly connected to the limiting ring 19. Two locking grooves 23 are symmetrically opened on the outer wall of the first rotating shaft 9. The locking block 22 fits against the inner wall of the locking groove 23. The elastic force of the first spring 17 is greater than the elastic force of the second spring 21.

[0026] Through the above technical solution, the wastewater generated from the production of high-efficiency cyhalothrin microcapsule suspension is injected into the reactor 1 through the inlet valve 2, and flocculant is loaded into the storage chamber 5 through the feed inlet 6. The motor 8 is started, driving the first rotating shaft 9 to rotate counterclockwise, causing the slot 23 to rotate counterclockwise. As the slot 23 rotates counterclockwise, it presses against the straight surface of the outer wall of the block 22. Thus, the counterclockwise rotation of the slot 23 drives the block 22 to rotate counterclockwise, causing the limiting ring 19 to rotate counterclockwise, which in turn drives the top plate 24 to rotate counterclockwise. When the top plate 24 rotates to the top block 18, the top plate 24 presses against the inclined surface of the outer wall of the top block 18. Under the pressure, the top block 18 moves laterally, causing the piston rod 16 to move and pressing the first spring 17. Simultaneously, the piston rod 16 pushes the piston plate 15 into the housing 13. When the top plate 24 rotates to a position away from the top block 18, the first spring 17 causes the top block 18 to move back, causing the piston rod 16 and piston plate 15 to move back as well. This process repeats. As the first rotating shaft 9 rotates counterclockwise, several piston plates 15 reciprocate within the housing 13. When the piston plate 15 moves towards the first rotating shaft 9, the pulling action of the piston plate 15, in conjunction with the two first one-way valves 14, enables... The flocculant in the storage chamber 5 is drawn into the casing 13 along the U-shaped tube 7. When the piston plate 15 moves towards the U-shaped tube 7, the flocculant in the casing 13 is squeezed into the wastewater along the U-shaped tube 7 under the pressure of the piston plate 15. This facilitates the quantitative and uniform addition of flocculant to the wastewater, improving the flocculation effect of the flocculant on the wastewater. Furthermore, by directly squeezing the flocculant into the interior of the wastewater, contact between the flocculant and the foam on the water surface is avoided, preventing the foam from carrying the flocculant and suspending it on the liquid surface. While the first rotating shaft 9 rotates counterclockwise, it drives the second rotating shaft 10 to rotate counterclockwise, causing the pressure plate 11 and the stirring blade 12 to rotate counterclockwise. The wastewater and flocculant are stirred to accelerate the mixing of the flocculant and wastewater. After the flocculant is added, the first rotating shaft 9 is rotated clockwise by the motor 8, which drives the slot 23 to rotate clockwise. As the slot 23 rotates clockwise, it presses against the inclined surface of the outer wall of the slot 22, causing the slot 22 and the limiting ring 19 to rotate clockwise. When the top plate 24 of the outer wall of the limiting ring 19 rotates to the top block 18, it is blocked by the top block 18. As the first rotating shaft 9 continues to rotate, the slot 23 pushes the slot 22 to move and presses the second spring 21. Thus, when the motor 8 controls the first rotating shaft 9 to rotate clockwise, the flocculant is stopped from being added.

[0027] Specifically, a waste container 25 is threadedly connected to the bottom of the reactor 1. An installation ring 45 is fixedly connected to the inner wall of the reactor 1, below the casing 13. Several hydraulic cylinders 26 are fixedly mounted in a circular array at the bottom of the installation ring 45. A support ring 27 is fixedly connected to the output ends of the hydraulic cylinders 26. Several sliding shafts 28 are slidably connected in a circular array to the inner wall of the support ring 27. Limit blocks 29 are fixedly connected to the tops of the sliding shafts 28. A rotating ring 31 is fixedly connected to the bottoms of the sliding shafts 28. A second rotating shaft 10 is rotatably connected to the rotating ring 31. The outer surface of the sliding shaft 28... The wall sleeve is equipped with a third spring 30. The bottom of the third spring 30 is fixedly connected to the rotating ring 31, and the top of the third spring 30 is fixedly connected to the support ring 27. The pressure plate 11 is equipped with a water squeezing assembly. The water squeezing assembly includes a water inlet chamber 32, which is located at the bottom of the pressure plate 11. A filter plate 33 is fixedly connected to the inner wall of the water inlet chamber 32. Several water outlet pipes 34 are fixedly installed in a ring array on the top of the pressure plate 11. The bottom of the water outlet pipes 34 extends into the interior of the water inlet chamber 32. A second one-way valve 35 is fixedly connected to the inner wall of the water outlet pipes 34. The second one-way valve 35 opens from bottom to top.

[0028] Through the above technical solution, when the motor 8 controls the first rotating shaft 9 to rotate clockwise, driving the stirring blade 12 to rotate clockwise, the wastewater can form a vortex. After the flocculants in the wastewater are formed, the motor 8 is turned off, stopping the stirring of the wastewater. After the stirring blade 12 stops rotating, the centrifugal force gradually disappears, and the flocculants precipitated in the wastewater gradually move towards the center and settle into the waste bin 25 for accumulation. The hydraulic cylinder 26 controls the support ring 27 to move downward, driving the sliding shaft 28 and the rotating ring 31 to move downward, causing the second rotating shaft 10 to move downward, driving the pressure plate 11 to move downward and insert into the waste bin 25. The pressure plate 11 can seal the flocculants in the waste bin 25, preventing the flocculants from separating from the surface of the supernatant. The boundary is blurred. When the supernatant is discharged from the drain valve 3, the flocculent is also discharged. As the pressure plate 11 continues to move downward, the pressure plate 11 and the filter plate 33 can squeeze the flocculent, squeezing out the water inside the flocculent. The squeezed water passes through the filter plate 33 and enters the water inlet chamber 32, and is discharged upward along the water outlet pipe 34. The discharged water passes through the second one-way valve 35 and falls to the top of the pressure plate 11. At this time, the hydraulic cylinder 26 controls the pressure plate 11 to move upward. When the top of the pressure plate 11 is level with the bottom of the reactor 1, the water squeezed out in the water outlet pipe 34 can be discharged from the drain valve 3. The waste bucket 25 is removed from the bottom of the reactor 1 by a spiral, which facilitates the cleaning of the squeezed flocculent inside.

[0029] Specifically, several air pumps 36 are fixedly installed in a ring array on the outer wall of the reactor 1. The input end of the air pump 36 is fixedly connected to the air extraction pipe 37, and the output end of the air pump 36 is fixedly connected to the air outlet pipe 38. The end of the air outlet pipe 38 penetrates the side wall of the reactor 1 and connects to the inside of the U-shaped tube 7. The bottom of each of the several U-shaped tubes 7 is fixedly connected to the guide pipe 39, which is set to be arc-shaped.

[0030] With the above technical solution, if some flocculent material adheres to the bottom of the reactor 1 and does not settle in the waste bin 25, several air pumps 36 are started to blow air into the U-shaped tube 7 through several air outlet pipes 38 at the same time. After being blocked by the first one-way valve 14, the gas entering the U-shaped tube 7 is discharged downwards, and the gas is guided by the guide pipe 39 to tilt and sweep the bottom of the reactor 1. This makes it easier to clean the flocculent material adhering to the bottom of the reactor 1 and helps the flocculent material move to the waste bin 25.

[0031] Specifically, several supports 40 are fixedly installed in a ring array on the inner wall of the reactor 1 and below the mounting ring 45. The supports 40 are all fixedly connected to a fixing ring 41. The inside of the fixing ring 41 is arranged in a ring array with four sets of vibration components. The vibration components include several second mounting grooves 42, which are opened sequentially from top to bottom inside the fixing ring 41. The inner wall of the second mounting groove 42 is slidably connected to a protrusion 44. One side of the protrusion 44 is set as a symmetrical inclined surface, and the other side of the protrusion 44 is fixedly connected to a fourth spring 43. The end of the fourth spring 43 is fixedly connected to the fixing ring 41. The elastic force of the fourth spring 43 is greater than that of the third spring 30.

[0032] Through the above technical solution, after the supernatant water in the reactor 1 is discharged, the hydraulic cylinder 26 controls the support ring 27 to continue moving upward, driving the sliding shaft 28 and the rotating ring 31 to move upward, causing the second rotating shaft 10 and the pressure plate 11 to move upward. When the rotating ring 31 moves into the fixed ring 41, it presses against the inclined surface at the bottom of the protrusion 44. Under the pressure of the rotating ring 31, the protrusion 44 is pushed into the second mounting groove 42, pressing the fourth spring 43. After the rotating ring 31 passes upward through the protrusion 44, the protrusion 44 is reset under the action of the fourth spring 43. After the rotating ring 31 passes upward through the fixed ring 41, the hydraulic cylinder 26 controls the support ring 27 to move downward, driving the sliding shaft 28 and the rotating ring 31 to move downward, causing the second rotating shaft 10 and the pressure plate 11 to move downward. When the rotating ring 31 presses against the inclined surface at the top of the protrusion 44... When the ring 31 stops moving due to the obstruction of the protrusion 44, the support ring 27 continues to move downward, compressing the third spring 30. When the third spring 30 is compressed to its limit, the ring 31 pushes the protrusion 44 into the second mounting groove 42. After the ring 31 passes through the protrusion 44, under the action of the third spring 30, it drives the sliding shaft 28 and the ring 31 to move downward and vibrate, causing the second rotating shaft 10 and the pressure plate 11 to move downward and vibrate. This process is repeated. Through the several protrusions 44, the support ring 27 is controlled to move downward, which drives the pressure plate 11 to vibrate continuously downward. This facilitates the shaking off of flocculent material adhering to the bottom of the pressure plate 11, avoiding secondary pollution caused by the blackening and odor of the flocculent material residue. Moreover, the vertical downward vibration method can shake the flocculent material into the waste bin 25, making it convenient to clean the flocculent material.

[0033] An operating method for a pesticide production wastewater pretreatment and purification device, applicable to the aforementioned pesticide production wastewater pretreatment and purification device, the steps of which are as follows: S1: The wastewater generated from the production of high-efficiency cyhalothrin microcapsule suspension is injected into the reactor 1 through the inlet valve 2. The motor 8 is started to control the first rotating shaft 9 to rotate counterclockwise, and flocculant is quantitatively added into the wastewater. S2: Start the hydraulic cylinder 26 to control the pressure plate 11 to insert downward into the waste bucket 25, squeeze the flocculent in the waste bucket 25, and then control the pressure plate 11 to move upward to the top of the waste bucket 25, and open the drain valve 3 to discharge the supernatant after flocculation. S3: Start the hydraulic cylinder 26 to control the rotating ring 31 to pass upward through the fixed ring 41, and then control the rotating ring 31 to move downward. With the cooperation of the vibration component, shake off the flocculent material adhering to the bottom of the pressure plate 11, and unscrew the waste bucket 25 from the bottom of the reactor 1 to clean the flocculent material inside.

[0034] In use, wastewater from the production of high-efficiency cyhalothrin microcapsule suspension is injected into reactor 1 through inlet valve 2, and flocculant is added into storage chamber 5 through inlet 6. Motor 8 is started, driving the first rotating shaft 9 to rotate counterclockwise, causing the slot 23 to rotate counterclockwise. Simultaneously, the slot 23 presses against the straight surface of the outer wall of the block 22. This counterclockwise rotation of the slot 23 causes the block 22 to rotate counterclockwise, causing the limiting ring 19 to rotate counterclockwise, which in turn causes the top plate 24 to rotate counterclockwise. When the top plate 24 rotates to the top block 18, it presses against the inclined surface of the outer wall of the top block 18. Under the pressure of the top plate 24, the top block 18 moves laterally, causing the piston rod 16 to move and compressing the first spring 17. Simultaneously, the piston rod 16 pushes the piston plate... The piston rod 16 and piston plate 15 are pressed into the housing 13. When the top plate 24 rotates to a position away from the top block 18, the top block 18 moves back under the action of the first spring 17, driving the piston rod 16 and piston plate 15 to move back. This process repeats. As the first rotating shaft 9 rotates counterclockwise, several piston plates 15 move back and forth within the housing 13. When the piston plate 15 moves towards the first rotating shaft 9, under the pulling action of the piston plate 15, in conjunction with the two first one-way valves 14, the flocculant in the storage chamber 5 can be drawn into the housing 13 along the U-shaped tube 7. When the piston plate 15 moves towards the U-shaped tube 7, under the squeezing action of the piston plate 15, the flocculant in the housing 13 can be squeezed into the wastewater along the U-shaped tube 7. This facilitates the quantitative addition of flocculant to the wastewater and improves the efficiency of flocculant production. The flocculant has a flocculation effect on wastewater. By directly squeezing the flocculant into the interior of the wastewater, contact between the flocculant and the foam on the water surface is avoided, preventing the foam from carrying the flocculant and suspending it on the liquid surface. While the first rotating shaft 9 rotates counterclockwise, it drives the second rotating shaft 10 to rotate counterclockwise, causing the pressure plate 11 and stirring blade 12 to rotate counterclockwise, stirring the wastewater and flocculant and accelerating the mixing of the flocculant and wastewater. After the flocculant is added, the motor 8 controls the first rotating shaft 9 to rotate clockwise, driving the slot 23 to rotate clockwise. As the slot 23 rotates clockwise, it presses against the inclined surface of the outer wall of the locking block 22, causing the locking block 22 and the limiting ring 19 to rotate clockwise. When the top plate 24 of the outer wall of the limiting ring 19 rotates to the top block 18, it is blocked by the top block 18. As the first rotating shaft 9 continues to rotate... The rotation, under the pressure of the slot 23, pushes the card block 22 to move, pressing the second spring 21. Thus, when the motor 8 controls the first rotating shaft 9 to rotate clockwise, the flocculant feeding stops. When the motor 8 controls the first rotating shaft 9 to rotate clockwise, driving the stirring blade 12 to rotate clockwise, the wastewater can form a vortex. After the flocculent in the wastewater is formed, the motor 8 is turned off, stopping the stirring of the wastewater. After the stirring blade 12 stops rotating, the centrifugal force gradually disappears, and the flocculent precipitated in the wastewater gradually moves towards the center and settles into the waste bin 25 for accumulation. If some flocculent adheres to the bottom of the reactor 1 and does not settle in the waste bin 25, several air pumps 36 are started, causing several air outlet pipes 38 to simultaneously blow air into the U-shaped pipe 7. After being blocked by the first one-way valve 14,The gas entering the U-shaped tube 7 is discharged downwards, and guided by the guide pipe 39, the gas is tilted and blown to the bottom of the reactor 1. This facilitates the cleaning of flocculent material adhering to the bottom of the reactor 1 and helps the flocculent material move to the waste bin 25. The hydraulic cylinder 26 controls the support ring 27 to move downwards, which drives the sliding shaft 28 and the rotating ring 31 to move downwards, causing the second rotating shaft 10 to move downwards, which drives the pressure plate 11 to move downwards and insert into the waste bin 25. The pressure plate 11 can block the flocculent material in the waste bin 25, preventing the boundary between the flocculent material and the supernatant from becoming blurred. When the supernatant is discharged by the drain valve 3, the flocculent material is discharged along with it. As the pressure plate 11 continues to move downwards, the flocculent material is discharged through the pressure plate 11 and the filter plate. The filter plate 33 can compress the flocs, squeezing out the water inside the flocs. The squeezed water passes through the filter plate 33 and enters the inlet chamber 32, and is discharged upward along the outlet pipe 34. The discharged water falls through the second one-way valve 35 to the top of the pressure plate 11. At this time, the hydraulic cylinder 26 controls the pressure plate 11 to move upward. When the top of the pressure plate 11 is level with the bottom of the reactor 1, the water squeezed out in the outlet pipe 34 can be discharged from the drain valve 3. After the supernatant water in the reactor 1 is discharged, the hydraulic cylinder 26 controls the support ring 27 to continue to move upward, driving the sliding shaft 28 and the rotating ring 31 to move upward, so that the second rotating shaft 10 and the pressure plate 11 move upward. When the rotating ring 31 moves into the fixed ring 41, The rotating ring 31 presses against the inclined surface at the bottom of the protrusion 44, pushing the protrusion 44 into the second mounting groove 42 under the pressure of the rotating ring 31, thus compressing the fourth spring 43. After the rotating ring 31 passes upward through the protrusion 44, the protrusion 44 is reset under the action of the fourth spring 43. After the rotating ring 31 passes upward through the fixed ring 41, the hydraulic cylinder 26 controls the support ring 27 to move downward, driving the sliding shaft 28 and the rotating ring 31 to move downward, causing the second rotating shaft 10 and the pressure plate 11 to move downward. When the rotating ring 31 presses against the inclined surface at the top of the protrusion 44, the rotating ring 31 stops moving due to the obstruction of the protrusion 44. As the support ring 27 continues to move downward, it compresses the third spring 30. When the third spring 30 is compressed to its limit, the rotating ring 3... 1. Pushing the protrusion 44 into the second mounting groove 42, after the rotating ring 31 passes downward through the protrusion 44, under the action of the third spring 30, it drives the sliding shaft 28 and the rotating ring 31 to move downward and vibrate, causing the second rotating shaft 10 and the pressure plate 11 to move downward and vibrate. This process repeats, and through the several protrusions 44, while controlling the downward movement of the support ring 27, it drives the pressure plate 11 to vibrate continuously downward. This facilitates the shaking off of flocculent material adhering to the bottom of the pressure plate 11, preventing the flocculent material from remaining, turning black, and smelling bad, thus avoiding secondary pollution. Furthermore, the vertical downward vibration method can shake the flocculent material into the waste bin 25. The waste bin 25 can then be removed from the bottom of the reactor 1 by a spiral motion, facilitating the cleaning of the dried flocculent material inside.

[0035] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0036] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pretreatment and purification device for pesticide production wastewater, characterized in that, The reactor includes a reactor (1), with an inlet valve (2) fixedly connected to the outer wall of the reactor (1), and a drain valve (3) fixedly connected to the outer wall of the reactor (1) below the inlet valve (2). A collar (4) is fixedly connected to the top of the reactor (1), and a storage chamber (5) is opened inside the collar (4). A feed inlet (6) is opened at the top of the collar (4), and the feed inlet (6) communicates with the storage chamber (5). Several U-shaped tubes (7) are fixedly installed in a ring array on the inner wall of the collar (4), and the bottom of the U-shaped tubes (7) extends to... Inside the reactor (1), the outer wall of the U-shaped tube (7) is provided with a feeding assembly. The top of the reactor (1) is fixedly connected to a motor (8). The output end of the motor (8) extends into the reactor (1) and is fixedly connected to a first rotating shaft (9). The inner wall of the first rotating shaft (9) is slidably connected to a second rotating shaft (10). The bottom of the second rotating shaft (10) is fixedly connected to a pressure plate (11). The top of the pressure plate (11) is set as an annular inclined surface. Several stirring blades (12) are fixedly installed in an annular array on the top of the pressure plate (11).

2. The pesticide production wastewater pretreatment and purification device according to claim 1, characterized in that, The feeding assembly includes a housing (13), which is fixedly installed on the outer wall of a U-shaped tube (7). Two first one-way valves (14) are symmetrically fixedly connected to the inner wall of the U-shaped tube (7) with the housing (13) as the center. Both first one-way valves (14) open from top to bottom. A piston plate (15) is slidably connected to the inner wall of the housing (13). A piston rod (16) is fixedly connected to one side of the piston plate (15). One end of the piston rod (16) passes through the housing (13) and is fixedly connected to a top block (18). The outer wall of 18) is set as a symmetrical inclined surface. The outer wall of the piston rod (16) is fitted with a first spring (17). One end of the first spring (17) is fixedly connected to the top block (18), and the other end of the first spring (17) is fixedly connected to the sleeve box (13). The outer wall of the first rotating shaft (9) is rotatably connected to a limiting ring (19). The limiting ring (19) is provided with a limiting unit inside. The outer wall of the limiting ring (19) is fixedly connected with several top plates (24) in a ring array. The top plates (24) are used in conjunction with the top block (18).

3. The pesticide production wastewater pretreatment and purification device according to claim 2, characterized in that, The limiting unit includes two first mounting slots (20), which are symmetrically opened inside the limiting ring (19). The inner walls of the two first mounting slots (20) are slidably connected with a locking block (22). One side of the locking block (22) is set as an inclined surface, and the other side of the locking block (22) is fixedly connected with a second spring (21). The end of the second spring (21) is fixedly connected to the limiting ring (19). The outer wall of the first rotating shaft (9) is symmetrically opened with two locking grooves (23). The locking block (22) fits against the inner wall of the locking groove (23). The elastic force of the first spring (17) is greater than that of the second spring (21).

4. The pesticide production wastewater pretreatment and purification device according to claim 3, characterized in that, The bottom of the reactor (1) is threaded with a waste bucket (25). The inner wall of the reactor (1) and below the sleeve (13) is fixedly connected with an installation ring (45). The bottom of the installation ring (45) is fixedly installed with several hydraulic cylinders (26) in a ring array. The output ends of several hydraulic cylinders (26) are fixedly connected with a support ring (27). The inner wall of the support ring (27) is slidably connected with several sliding shafts (28) in a ring array. The top of several sliding shafts (28) is fixedly connected with a limit block (29). The bottom of several sliding shafts (28) is fixedly connected with a rotating ring (31). The second rotating shaft (10) is rotatably connected to the rotating ring (31). The outer wall of the sliding shaft (28) is fitted with a third spring (30). The bottom of the third spring (30) is fixedly connected to the rotating ring (31). The top of the third spring (30) is fixedly connected to the support ring (27). The pressure plate (11) is provided with a water squeezing assembly.

5. The pesticide production wastewater pretreatment and purification device according to claim 4, characterized in that, The water squeezing assembly includes a water inlet chamber (32), which is located at the bottom of the pressure plate (11). A filter plate (33) is fixedly connected to the inner wall of the water inlet chamber (32). Several water outlet pipes (34) are fixedly installed in a ring array on the top of the pressure plate (11). The bottom of the water outlet pipes (34) extends into the interior of the water inlet chamber (32). A second one-way valve (35) is fixedly connected to the inner wall of the water outlet pipes (34). The second one-way valve (35) opens from bottom to top.

6. The pesticide production wastewater pretreatment and purification device according to claim 5, characterized in that, The outer wall of the reactor (1) is fixedly equipped with several air pumps (36) in a ring array. The input end of the air pump (36) is fixedly connected to the air extraction pipe (37), and the output end of the air pump (36) is fixedly connected to the air outlet pipe (38). The end of the air outlet pipe (38) penetrates the side wall of the reactor (1) and connects to the inside of the U-shaped pipe (7).

7. The pesticide production wastewater pretreatment and purification device according to claim 6, characterized in that, The bottom of each of the U-shaped tubes (7) is fixedly connected to a guide pipe (39), and the guide pipe (39) is set to be arc-shaped.

8. The pesticide production wastewater pretreatment and purification device according to claim 7, characterized in that, The inner wall of the reactor (1) and below the mounting ring (45) is fixedly installed with several supports (40) in a ring array. The supports (40) are fixedly connected together by a fixing ring (41). The inside of the fixing ring (41) is arranged in a ring array with four sets of vibration components.

9. The pesticide production wastewater pretreatment and purification device according to claim 8, characterized in that, The vibration assembly includes several second mounting slots (42), which are sequentially opened from top to bottom inside the fixing ring (41). The inner wall of the second mounting slot (42) is slidably connected with a protrusion (44). One side of the protrusion (44) is set as a symmetrical inclined surface, and the other side of the protrusion (44) is fixedly connected with a fourth spring (43). The end of the fourth spring (43) is fixedly connected to the fixing ring (41), and the elastic force of the fourth spring (43) is greater than that of the third spring (30).

10. An operating method for a pesticide production wastewater pretreatment and purification device, the operating method being applicable to the pesticide production wastewater pretreatment and purification device described in claim 9, characterized in that: The steps for this operation are as follows: S1: The wastewater generated from the production of high-efficiency cyhalothrin microcapsule suspension is injected into the reactor (1) through the inlet valve (2), and the motor (8) is started to control the first rotating shaft (9) to rotate counterclockwise, and flocculant is quantitatively added to the inside of the wastewater; S2: Start the hydraulic cylinder (26) to control the pressure plate (11) to insert downward into the waste bucket (25) to squeeze the flocculated material in the waste bucket (25), and then control the pressure plate (11) to move upward to the top of the waste bucket (25) and open the drain valve (3) to discharge the supernatant after flocculation. S3: Start the hydraulic cylinder (26) to control the rotating ring (31) to pass upward through the fixed ring (41), and then control the rotating ring (31) to move downward. With the cooperation of the vibration component, the flocculent material stuck to the bottom of the pressure plate (11) will be shaken off, and the waste bucket (25) will be unscrewed from the bottom of the reactor (1) to clean the flocculent material inside.

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