Sewage sedimentation tank for plasticizer production

Abstract

The invention relates to the technical field of sewage sedimentation tanks for plasticizer production, and discloses a sewage sedimentation tank for plasticizer production, which comprises a shell, a drainage device arranged on the surface of the shell, support legs fixedly connected to the bottom of the shell, a medicament hopper fixedly connected to the top of the shell, and a first electromagnetic valve arranged on the top of the shell, a second electromagnetic valve is fixedly connected to the bottom of the chemical hopper, a supporting seat is fixedly connected to the bottom of the shell, a supporting plate is fixedly connected to the bottom of the shell, a water suction pump is fixedly connected to the inner wall of the supporting plate, and a water suction pipe is fixedly connected to the surface of the water suction pump. According to the chemical cleaning device, when chemicals in a chemical hopper enter a shell through a second electromagnetic valve, an output end of a motor is started at the moment, a cleaning brush is driven to rotate through a rotating rod, the effect of cleaning impurities attached to the interior of the shell is achieved, and the problem that normal work is affected due to long-time accumulation is avoided; and the medicament entering the shell can be fully fused with the wastewater.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage sedimentation tank equipment for plasticizer production, and specifically relates to a sewage sedimentation tank for plasticizer production. Background Art

[0002] Plasticizer is one of the most widely used plastic additives in industrial production. Its core function is to weaken the secondary bonds (such as van der Waals forces) between polymer molecular chains chemically or physically, thereby reducing the crystallinity of the material and improving the mobility of molecular chains. It can be divided into internal plasticizers and external plasticizers according to the action mode; and can be divided into phthalate esters and environmentally friendly alternatives according to the chemical structure.

[0003] When the existing sewage sedimentation tank for plasticizer production is separating pollutants from wastewater and sewage, it usually completes the separation work through long-term static settlement. It cannot directly separate the pollutant precipitation from water, which will waste a lot of time on the sedimentation work and reduce the working efficiency of the machine. Summary of the Invention

[0004] The purpose of the present invention is to provide a sewage sedimentation tank for plasticizer production to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a sewage sedimentation tank for plasticizer production, including a housing. A drainage device is arranged on the surface of the housing. Legs are fixedly connected to the bottom of the housing. A chemical agent hopper is fixedly connected to the top of the housing. A first solenoid valve is arranged on the top of the housing. A second solenoid valve is fixedly connected to the bottom of the chemical agent hopper. A support base is fixedly connected to the bottom of the housing. A support plate is fixedly connected to the bottom of the housing. A water pump is fixedly connected to the inner wall of the support plate. A drainage pipe is fixedly connected to the surface of the water pump. A water suction pipe is fixedly connected to the surface of the water pump. A mixing and stirring device is arranged on the top of the housing. An impurity recovery device is arranged on the bottom of the housing. A separation device is arranged on the bottom of the housing;

[0007] The mixing and stirring device includes a motor. The bottom of the motor is fixedly connected to the top of the housing. The output end of the motor is fixedly connected to a rotating rod. A cleaning brush is fixedly connected to the surface of the rotating rod. Stirring plates are fixedly connected to the surface of the rotating rod.

[0008] Furthermore, the chemical agent hopper is located above the second solenoid valve. The first solenoid valve is located below the mixing and stirring device. The legs are located below the housing. The end of the drainage pipe away from the water pump is fixedly connected to the surface of the housing.

[0009] Further, a plurality of cleaning brushes are provided. The surface of the cleaning brush is adapted to the inner wall of the housing, the top of the cleaning brush contacts the inner wall of the housing, the stirring plate is located below the cleaning brush, and the rotating rod penetrates through the cleaning brush and the stirring plate and extends to the outer end of the stirring plate.

[0010] Further, the separation device includes a bidirectional electric push rod. The surface of the bidirectional electric push rod is fixedly connected to the inner wall of the support base. The end of the bidirectional electric push rod is fixedly connected to a push rod. The end of the push rod away from the bidirectional electric push rod is fixedly connected to an annular plate. An inclined plate is hinged to the surface of the annular plate. The end of the inclined plate away from the annular plate is hinged to a push plate. The top of the push plate is fixedly connected to a hinge block. An articulated plate is hinged to the surface of the hinge block. A filter screen is fixedly connected to the inner wall of the housing. A telescopic rod is fixedly connected to the inner wall of the housing. The end of the telescopic rod away from the housing is fixedly connected to the surface of the push plate. The end of the articulated plate away from the hinge block is hinged to a pressing block. A soft rod is fixedly connected to the surface of the push plate. The end of the soft rod away from the push plate is fixedly connected to a support plate. A positioning support block is hinged to the surface of the support plate. A support rod is fixedly connected to the inner wall of the housing. A second spring is fixedly connected to the top of the support rod. The top of the second spring is fixedly connected to a partition plate. A thin rod is fixedly connected to the top of the support rod. The thin rod penetrates through the partition plate and the annular cleaning plate and extends to the outer end of the annular cleaning plate. The articulated plate is located above the pressing block. The second spring is located below the partition plate and above the support rod.

[0011] Further, the filter screen is located below the push plate, below the annular plate, the partition plate is located below the annular cleaning plate, below the pressing block, and the end of the spring away from the fixed block contacts the surface of the annular cleaning plate.

[0012] Further, the thin rod penetrates through the partition plate and the annular cleaning plate and extends to the outer end of the annular cleaning plate. The articulated plate is located above the pressing block. The second spring is located below the partition plate and above the support rod.

[0013] Further, the impurity recovery device includes a pull rod, the end of the pull rod is fixedly connected to the top of the push rod, the bottom of the outer shell is fixedly connected with an impurity recovery box, a filter plate is fixedly connected to the inner wall of the impurity recovery box, a door is opened on the surface of the impurity recovery box, a shovel impurity plate is fixedly connected to the end of the pull rod away from the push rod, a long plate is slidably connected to the inner wall of the impurity recovery box, a hinge column is fixedly connected to the surface of the long plate, a filter plate is fixedly connected to the inner wall of the impurity recovery box, a retractable pull rod is fixedly connected to the inner wall of the impurity recovery box, a long spring is fixedly connected to the inner wall of the impurity recovery box, an extrusion plate is fixedly connected to the end of the retractable pull rod, a long hinge rod is hinged to the top of the extrusion plate, and the end of the long hinge rod away from the extrusion plate is hinged to the hinge column.

[0014] Further, one end of the water suction pipe away from the water suction pump is fixedly connected to the surface of the impurity recovery box, the shovel impurity plate is located above the filter plate, the long plate is located above the filter plate, and one end of the long spring away from the impurity recovery box contacts the surface of the long plate.

[0015] The present invention has the following beneficial effects:

[0016] When the medicine in the medicine hopper enters the interior of the outer shell through the second solenoid valve, the motor is turned on at this time, and the output end drives the cleaning brush to rotate through the rotating rod, which will clean the impurities attached to the interior of the outer shell, avoiding the problem of affecting normal work due to long-term accumulation. The rotating rod drives the stirring plate to rotate, which will make the medicine entering the interior of the outer shell fully mix with the wastewater, making the impurities in the wastewater become flocculent faster, which is more conducive to the separation of wastewater and impurities.

[0017] When the wastewater mixed with the medicine enters the interior of the outer shell, the double-headed electric push rod is turned on at this time, and the output end will drive the ring plates to approach each other through the push rod, so that the wastewater can pass through the filter screen faster and be discharged, and the impurities are pushed inward. When the ring plates move away from each other, they will drive a small part of the impurities to approach the outer wall of the outer shell, which is convenient for manual cleaning, preventing the problem of filter screen blockage caused by incomplete removal of impurities, which affects the operation of the machine. When the ring plates approach each other, they will squeeze the push plates to approach each other through the inclined plate, so that the impurities in the central position further enter above the partition plate. At the same time, the telescopic rod will play a role in stabilizing the movement of the push plates. The push plates squeeze the hinge plates to squeeze the pressing blocks, achieving the effect of pressing the partition plate downward for cleaning impurities, and at the same time avoiding the problem of backflow of the cleaned impurities. When the push plates approach each other, they will drive the support plates and the positioning support blocks to move by extrusion. At this time, the positioning support blocks push the annular cleaning plate to move to clean the impurities above the partition plate. When the support plates move back, the annular cleaning plate will be reset by the extrusion of the spring, facilitating the next cleaning work. The support plates will play a role in limiting the positioning support blocks to prevent them from colliding with the filter screen when moving back.

[0018] When impurities enter the interior of the impurity recovery tank in the present invention, the bidirectional electric push rod is activated, and its output end drives the impurity shoveling plate to move through the pull rod, causing the impurity shoveling plate to push the impurities above the filter plate into the space above the filter plate. The long plate will squeeze the long hinge rod through the hinge column, driving the extrusion plate to move back and forth to extrude the impurities above the filter plate, achieving a more thorough separation effect between the wastewater and the impurities. The telescopic pull rod serves to stabilize the position of the extrusion plate, while the long spring serves to reset the long plate, preventing the impurities from floating back through the wastewater. When the water pump is turned on, it will extract the wastewater inside the impurity recovery tank through the water suction pipe and then discharge it into the interior of the housing through the drain pipe for discharge work.

[0019] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the water pump structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the mixing and stirring device structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the separation device structure of the present invention;

[0025] Figure 5 For the present invention Figure 4 It is an enlarged schematic diagram of part A in the present invention;

[0026] Figure 6 It is a schematic diagram of the second spring structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the impurity recovery device structure of the present invention;

[0028] Figure 8 It is another schematic diagram of the impurity recovery device structure of the present invention;

[0029] Figure 9 For the present invention Figure 8 It is an enlarged schematic diagram of part B in the present invention.

[0030] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0031] In the figure: 1. Outer shell; 2. Drainage device; 3. Leg; 4. Reagent hopper; 5. Mixing and stirring device; 6. First solenoid valve; 7. Second solenoid valve; 8. Support seat; 9. Support plate; 10. Water pump; 11. Drain pipe; 12. Water suction pipe; 13. Impurity recovery device; 14. Separation device; 20. Motor; 21. Rotating rod; 22. Cleaning brush; 23. Stirring plate; 30. Double-acting electric push rod; 31. Push rod; 32. Filter screen; 33. Telescopic rod; 34. Push plate; 35. Hinge block; 36. Ring plate; 37. Inclined plate; 38. Hinge plate; 39. Pressing block; 40. Soft rod; 41. Support plate block; 42. Partition plate; 43. Thin rod; 44. Annular cleaning plate; 45. Positioning support block; 46. Spring; 47. Fixed block; 48. Second spring; 49. Support rod; 50. Impurity recovery box; 51. Filter plate; 52. Door; 53. Pull rod; 54. Shovel impurity plate; 55. Long plate; 56. Hinge column; 57. Filtering plate; 58. Long spring; 59. Retractable pull rod; 60. Extrusion plate; 61. Long hinge rod. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-9As shown in the figure, the present invention is a sewage sedimentation tank for plasticizer production, including a housing 1. A drainage device 2 is arranged on the surface of the housing 1. Legs 3 are fixedly connected to the bottom of the housing 1. A medicine hopper 4 is fixedly connected to the top of the housing 1. When the medicine inside the medicine hopper 4 enters the inside of the housing 1 through the second solenoid valve 7, at this time, the motor 20 is turned on, and the output end drives the cleaning brush 22 to rotate through the rotating rod 21, which can clean the impurities attached to the inside of the housing 1, avoiding the problem that long-term accumulation affects normal work. A first solenoid valve 6 is arranged on the top of the housing 1. The bottom of the medicine hopper 4 is fixedly connected to the second solenoid valve 7. A support seat 8 is fixedly connected to the bottom of the housing 1. A support plate 9 is fixedly connected to the bottom of the housing 1. A water pump 10 is fixedly connected to the inner wall of the support plate 9. When the water pump 10 is turned on, it will extract the wastewater inside the impurity recovery tank 50 through the water extraction pipe 12 and then discharge it into the inside of the housing 1 through the drainage pipe 11 for discharge work. The surface of the water pump 10 is fixedly connected to the drainage pipe 11. The surface of the water pump 10 is fixedly connected to the water extraction pipe 12. A mixing and stirring device 5 is arranged on the top of the housing 1. An impurity recovery device 13 is arranged on the bottom of the housing 1. A separation device 14 is arranged on the bottom of the housing 1;

[0034] The mixing and stirring device 5 includes a motor 20. The bottom of the motor 20 is fixedly connected to the top of the housing 1. The output end of the motor 20 is fixedly connected to a rotating rod 21. The rotating rod 21 drives the stirring plate 23 to rotate, which can make the medicine entering the inside of the housing 1 fully blend with the wastewater, making the impurities in the wastewater become flocculent faster, which is more conducive to the separation of wastewater and impurities. The surface of the rotating rod 21 is fixedly connected to a cleaning brush 22. The surface of the rotating rod 21 is fixedly connected to the stirring plate 23.

[0035] The medicine hopper 4 is located above the second solenoid valve 7. The first solenoid valve 6 is located below the mixing and stirring device 5. The legs 3 are located below the housing 1. One end of the drainage pipe 11 away from the water pump 10 is fixedly connected to the surface of the housing 1.

[0036] The number of the cleaning brushes 22 is several. The surface of the cleaning brush 22 is adapted to the inner wall of the housing 1. The top of the cleaning brush 22 contacts the inner wall of the housing 1. The stirring plate 23 is located below the cleaning brush 22. The rotating rod 21 passes through the cleaning brush 22 and the stirring plate 23 and extends to the outer end of the stirring plate 23.

[0037] The separation device 14 includes a bidirectional electric push rod 30. When the output end of the bidirectional electric push rod 30 is opened, the push rod 31 will drive the ring plates 36 to move closer to each other, enabling the wastewater to pass through the filter screen 32 faster and be discharged, and pushing the impurities inward. The surface of the bidirectional electric push rod 30 is fixedly connected to the inner wall of the support seat 8. The end of the bidirectional electric push rod 30 is fixedly connected to a push rod 31. The end of the push rod 31 away from the bidirectional electric push rod 30 is fixedly connected to a ring plate 36. When the ring plates 36 move away from each other, they will drive a small part of the impurities closer to the outer wall of the housing 1, facilitating manual cleaning and preventing the filter screen 32 from being blocked by the inability to completely remove the impurities, thus affecting the operation of the machine. An inclined plate 37 is hinged to the surface of the ring plate 36. The inclined plate 37 squeezes the push plates 34 to move closer to each other, causing the impurities at the central position to further enter above the partition plate 42. At the same time, the telescopic rod 33 will have an effect of stabilizing the movement of the push plates 34. The end of the inclined plate 37 away from the ring plate 36 is hinged to a push plate 34. The push plate 34 squeezes the pressing block 39 by pressing the hinge plate 38, achieving the effect of pressing the partition plate 42 downward for cleaning the impurities, and at the same time avoiding the problem of the cleaned impurities flowing back. The top of the push plate 34 is fixedly connected to a hinge block 35. The surface of the hinge block 35 is hinged to a hinge plate 38. The inner wall of the housing 1 is fixedly connected to a filter screen 32. The inner wall of the housing 1 is fixedly connected to a telescopic rod 33. The end of the telescopic rod 33 away from the housing 1 is fixedly connected to the surface of the push plate 34. The end of the hinge plate 38 away from the hinge block 35 is hinged to a pressing block 39. A soft rod 40 is fixedly connected to the surface of the push plate 34. The end of the soft rod 40 away from the push plate 34 is fixedly connected to a support plate 41. The support plate 41 moves with the positioning support block 45. At this time, the positioning support block 45 pushes the annular cleaning plate 44 to move to clean the impurities above the partition plate 42. The surface of the support plate 41 is hinged to a positioning support block 45. The inner wall of the housing 1 is fixedly connected to a support rod 49. The top of the support rod 49 is fixedly connected to a second spring 48. The top of the second spring 48 is fixedly connected to a partition plate 42. The top of the support rod 49 is fixedly connected to a thin rod 43. The surface of the thin rod 43 is hinged to the partition plate 42. The surface of the thin rod 43 is rotatably connected to an annular cleaning plate 44. The annular cleaning plate 44 will be reset by the extrusion of the spring 46, facilitating the next cleaning operation. The support plate 41 will limit the positioning support block 45 to prevent it from colliding with the filter screen 32 when moving back. The top of the partition plate 42 is fixedly connected to a fixing block 47. The surface of the fixing block 47 is fixedly connected to a spring 46.

[0038] The filter screen 32 is located below the push plate 34, the filter screen 32 is located below the ring plate 36, the partition plate 42 is located below the annular cleaning plate 44, the partition plate 42 is located below the pressing block 39, and the end of the spring 46 away from the fixing block 47 contacts the surface of the annular cleaning plate 44.

[0039] The thin rod 43 penetrates through the partition plate 42 and the annular cleaning plate 44 and extends to the outer end of the annular cleaning plate 44. The hinge plate 38 is located above the pressing block 39. The second spring 48 is located below the partition plate 42. The second spring 48 is located above the support rod 49.

[0040] The impurity recovery device 13 includes a pull rod 53. The pull rod 53 drives the impurity shoveling plate 54 to move, so that the impurity shoveling plate 54 pushes the impurities above the filter plate 51 into the upper part of the filter plate 57. The long plate 55 squeezes the long hinge rod 61 through the hinge column 56 to drive the extrusion plate 60 to move back and forth, squeezing the impurities above the filter plate 57, achieving a more sufficient separation effect between the waste water and the impurities. The end of the pull rod 53 is fixedly connected to the top of the push rod 31. The bottom of the housing 1 is fixedly connected with an impurity recovery box 50. The inner wall of the impurity recovery box 50 is fixedly connected with a filter plate 51. A door 52 is opened on the surface of the impurity recovery box 50. The end of the pull rod 53 away from the push rod 31 is fixedly connected with an impurity shoveling plate 54. The inner wall of the impurity recovery box 50 is slidably connected with a long plate 55. The surface of the long plate 55 is fixedly connected with a hinge column 56. The inner wall of the impurity recovery box 50 is fixedly connected with a filter plate 57. The inner wall of the impurity recovery box 50 is fixedly connected with a retractable pull rod 59, and the retractable pull rod 59 plays a role in stabilizing the position of the extrusion plate 60. The inner wall of the impurity recovery box 50 is fixedly connected with a long spring 58, and the long spring 58 plays a role in resetting the long plate 55 to prevent the impurities from floating back through the waste water. The end of the retractable pull rod 59 is fixedly connected with an extrusion plate 60. The top of the extrusion plate 60 is hinged with a long hinge rod 61. The end of the long hinge rod 61 away from the extrusion plate 60 is hinged with the hinge column 56.

[0041] One end of the water suction pipe 12 away from the water suction pump 10 is fixedly connected to the surface of the impurity recovery box 50. The impurity shoveling plate 54 is located above the filter plate 51. The long plate 55 is located above the filter plate 57. One end of the long spring 58 away from the impurity recovery box 50 contacts the surface of the long plate 55.

[0042] During use, when the medicament in the medicament hopper 4 enters the interior of the housing 1 through the second solenoid valve 7, the motor 20 is turned on at this time, and the output end drives the cleaning brush 22 to rotate through the rotating rod 21, which can clean the impurities adhering to the interior of the housing 1, avoiding the problem that the normal operation is affected by long-term accumulation. The rotating rod 21 drives the stirring plate 23 to rotate, which can fully mix the medicament entering the interior of the housing 1 with the wastewater, making the impurities in the wastewater become flocculent faster, which is more conducive to the separation of wastewater and impurities. When the wastewater mixed with the medicament enters the interior of the housing 1, the two-way electric push rod 30 is turned on at this time, and the output end drives the ring plate 36 to move closer to each other through the push rod 31, enabling the wastewater to pass through the filter screen 32 and be discharged faster, and pushing the impurities inward. When the ring plates 36 move away from each other, it will drive a small part of the impurities to approach the outer wall of the housing 1, facilitating manual cleaning and preventing the problem that the filter screen 32 is blocked due to incomplete removal of impurities, thus affecting the operation of the machine. When the ring plates 36 move closer to each other, they will squeeze the push plates 34 to move closer to each other through the inclined plate 37, enabling the impurities in the central position to further enter above the partition plate 42. At the same time, the telescopic rod 33 will stabilize the movement of the push plate 34. The push plate 34 squeezes the pressing block 39 by squeezing the hinge plate 38, achieving the effect of pressing the partition plate 42 downward to facilitate the cleaning of impurities and avoiding the problem of backflow of the cleaned impurities. When the push plates 34 move closer to each other, they will drive the support plate 41 and the positioning support block 45 to move by squeezing. At this time, the positioning support block 45 pushes the annular cleaning plate 44 to move to clean the impurities above the partition plate 42. When the support plate 41 moves back, the annular cleaning plate 44 will be reset by the extrusion of the spring 46, facilitating the next cleaning work. The support plate 41 will limit the positioning support block 45 to prevent it from colliding with the filter screen 32 when moving back. When the impurities enter the impurity recovery box 50, the output end of the two-way electric push rod 30 drives the impurity shoveling plate 54 to move through the pull rod 53, enabling the impurity shoveling plate 54 to push the impurities above the filter plate 51 into the upper part of the filter plate 57. The long plate 55 will squeeze the long hinge rod 61 through the hinge column 56 to drive the extrusion plate 60 to move back and forth to extrude the impurities above the filter plate 57, achieving a more sufficient separation effect between wastewater and impurities. The retractable pull rod 59 plays a role in stabilizing the position of the extrusion plate 60, and the long spring 58 will play a role in resetting the long plate 55 to prevent the impurities from floating back through the wastewater. When the water pump 10 is turned on, it will pump out the wastewater in the impurity recovery box 50 through the water suction pipe 12 and discharge it into the interior of the housing 1 through the drain pipe 11 for discharge work.

[0043] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A sewage sedimentation tank for plasticizer production, comprising a housing (1), characterized in that: A drainage device (2) is provided on the surface of the outer shell (1). Legs (3) are fixedly connected to the bottom of the outer shell (1). A medicine hopper (4) is fixedly connected to the top of the outer shell (1). A first solenoid valve (6) is provided on the top of the outer shell (1). A second solenoid valve (7) is fixedly connected to the bottom of the medicine hopper (4). A support seat (8) is fixedly connected to the bottom of the outer shell (1). A support plate (9) is fixedly connected to the bottom of the outer shell (1). A water pump (10) is fixedly connected to the inner wall of the support plate (9). A drain pipe (11) is fixedly connected to the surface of the water pump (10). A water suction pipe (12) is fixedly connected to the surface of the water pump (10). A mixing and stirring device (5) is provided on the top of the outer shell (1). An impurity recovery device (13) is provided on the bottom of the outer shell (1). A separation device (14) is provided on the bottom of the outer shell (1); The mixing and stirring device (5) includes a motor (20). The bottom of the motor (20) is fixedly connected to the top of the outer shell (1). The output end of the motor (20) is fixedly connected to a rotating rod (21). A cleaning brush (22) is fixedly connected to the surface of the rotating rod (21). A stirring plate (23) is fixedly connected to the surface of the rotating rod (21).

2. The sewage sedimentation tank for plasticizer production according to claim 1, wherein: The medicine hopper (4) is located above the second solenoid valve (7). The first solenoid valve (6) is located below the mixing and stirring device (5). The legs (3) are located below the outer shell (1). One end of the drain pipe (11) far away from the water pump (10) is fixedly connected to the surface of the outer shell (1).

3. The sewage sedimentation tank for plasticizer production according to claim 2, characterized in that: The number of the cleaning brushes (22) is several. The surface of the cleaning brush (22) is adapted to the inner wall of the outer shell (1). The top of the cleaning brush (22) contacts the inner wall of the outer shell (1). The stirring plate (23) is located below the cleaning brush (22). The rotating rod (21) penetrates through the cleaning brush (22) and the stirring plate (23) and extends to the outer end of the stirring plate (23).

4. A sewage sedimentation tank for plasticizer production according to claim 3, characterized in that: The separation device (14) includes a bidirectional electric push rod (30). The surface of the bidirectional electric push rod (30) is fixedly connected to the inner wall of the support seat (8). The end of the bidirectional electric push rod (30) is fixedly connected to a push rod (31). The end of the push rod (31) far from the bidirectional electric push rod (30) is fixedly connected to an annular plate (36). The surface of the annular plate (36) is hinged to an inclined plate (37). The end of the inclined plate (37) far from the annular plate (36) is hinged to a push plate (34). The top of the push plate (34) is fixedly connected to a hinge block (35). The surface of the hinge block (35) is hinged to a hinge plate (38). The inner wall of the housing (1) is fixedly connected to a filter screen (32). The inner wall of the housing (1) is fixedly connected to a telescopic rod (33). The end of the telescopic rod (33) far from the housing (1) is fixedly connected to the surface of the push plate (34). The end of the hinge plate (38) far from the hinge block (35) is hinged to a pressing block (39). The surface of the push plate (34) is fixedly connected to a flexible rod (40). The end of the flexible rod (40) far from the push plate (34) is fixedly connected to a support plate (41). The surface of the support plate (41) is hinged to a positioning support block (45). The inner wall of the housing (1) is fixedly connected to a support rod (49). The top of the support rod (49) is fixedly connected to a second spring (48). The top of the second spring (48) is fixedly connected to a partition plate (42). The top of the support rod (49) is fixedly connected to a thin rod (43). The surface of the thin rod (43) is hinged to the partition plate (42). The surface of the thin rod (43) is rotatably connected to an annular cleaning plate (44). The top of the partition plate (42) is fixedly connected to a fixing block (47). The surface of the fixing block (47) is fixedly connected to a spring (46).

5. A sewage sedimentation tank for plasticizer production according to claim 4, characterized in that: The filter screen (32) is located below the push plate (34), the filter screen (32) is located below the annular plate (36), the partition plate (42) is located below the annular cleaning plate (44), the partition plate (42) is located below the pressing block (39), and the end of the spring (46) far from the fixing block (47) contacts the surface of the annular cleaning plate (44).

6. The sewage sedimentation tank for plasticizer production according to claim 5, characterized in that: The thin rod (43) penetrates through the partition plate (42) and the annular cleaning plate (44) and extends to the outer end of the annular cleaning plate (44). The hinge plate (38) is located above the pressing block (39). The second spring (48) is located below the partition plate (42), and the second spring (48) is located above the support rod (49).

7. A sewage sedimentation tank for plasticizer production according to claim 6, characterized in that: The impurity recovery device (13) includes a pull rod (53), the end of the pull rod (53) is fixedly connected to the top of the push rod (31), the bottom of the outer shell (1) is fixedly connected with an impurity recovery box (50), a filter plate (51) is fixedly connected to the inner wall of the impurity recovery box (50), a door (52) is opened on the surface of the impurity recovery box (50), a shovel impurity plate (54) is fixedly connected to the end of the pull rod (53) far from the push rod (31), a long plate (55) is slidably connected to the inner wall of the impurity recovery box (50), a hinge column (56) is fixedly connected to the surface of the long plate (55), a filter plate (57) is fixedly connected to the inner wall of the impurity recovery box (50), a retractable pull rod (59) is fixedly connected to the inner wall of the impurity recovery box (50), a long spring (58) is fixedly connected to the inner wall of the impurity recovery box (50), the end of the retractable pull rod (59) is fixedly connected with a pressing plate (60), a long hinge rod (61) is hinged to the top of the pressing plate (60), and the end of the long hinge rod (61) far from the pressing plate (60) is hinged to the hinge column (56).

8. A sewage sedimentation tank for plasticizer production according to claim 7, characterized in that: One end of the water suction pipe (12) far from the water suction pump (10) is fixedly connected to the surface of the impurity recovery box (50), the shovel impurity plate (54) is located above the filter plate (51), the long plate (55) is located above the filter plate (57), and one end of the long spring (58) far from the impurity recovery box (50) is in contact with the surface of the long plate (55).

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