Recycling equipment based on sewage treatment

Abstract

The invention discloses recycling equipment based on sewage treatment, and relates to the technical field of sewage treatment.The recycling equipment comprises a graded filtering box, a base and a water tank, and the base is fixedly arranged between the graded filtering box and the water tank; a first grading plate, a second grading plate, a third grading plate, a fourth grading plate and a fifth grading plate are sequentially mounted on the inner side of the grading filter box, and a reserved groove is formed in the bottom between every two adjacent grading plates; and drainage mechanisms are fixedly arranged at the ends, away from the reserved groove, of the first grading plate, the second grading plate, the third grading plate, the fourth grading plate and the fifth grading plate correspondingly, and a pollution discharge mechanism is fixedly arranged outside the bottom of the grading filter box. In the climbing process of sewage at each stage, metal particles stay in the climbing space at each stage, then the metal particles are collected through the reserved groove, and the metal particles are discharged through the sewage discharging mechanism after being collected, so that the situation that the metal particles cannot be recycled due to the fact that the metal particles exist in the sewage is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a reuse device based on sewage treatment. Background Art

[0002] With the acceleration of industrialization, the problem of metal particle pollution in sewage is becoming increasingly serious. These metal particles mainly come from wastewater discharge from industries such as mining, metallurgy, electronics and chemical industry.

[0003] In particular, sewage containing heavy metals not only poses a serious threat to the ecological environment, but also endangers human health. Heavy metals such as lead, cadmium, mercury and chromium cannot be biodegraded. They accumulate in water bodies and amplify through the food chain, ultimately affecting the reuse of water resources. Therefore, we propose a reuse device based on sewage treatment to solve the above technical problems. Summary of the invention

[0004] In view of this, the present invention aims to provide a wastewater treatment-based recycling device, which is used to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: comprising a graded filter box, a base and a water tank, wherein the base is fixedly arranged between the graded filter box and the water tank, a first grading plate, a second grading plate, a third grading plate, a fourth grading plate and a fifth grading plate are sequentially installed on the inner side of the graded filter box, and a reserved groove is opened at the bottom between two adjacent ones, a water-draining mechanism is fixedly arranged at one end of the first grading plate, the second grading plate, the third grading plate, the fourth grading plate and the fifth grading plate away from the reserved groove, and a sewage discharge mechanism is fixedly arranged on the outside of the bottom of the graded filter box;

[0006] A loading frame is fixedly installed on the base, a plurality of supporting blocks are symmetrically installed on the loading frame, a plurality of lifting pumps are fixedly installed in the middle of the loading frame, a conveying mechanism is arranged on both sides of the lifting pump, a connecting component is fixedly arranged between two conveying mechanisms, a mounting seat is fixedly installed on the top of the outer side of the water tank, and a backwashing mechanism is fixedly arranged on the top of the mounting seat.

[0007] As a preferred solution, the hydrophobic mechanism comprises inclined surfaces respectively provided on the first grading plate, the second grading plate, the third grading plate, the fourth grading plate and the fifth grading plate, water holes are evenly provided on the inclined surfaces, the height of the fifth grading plate is greater than the height of the fourth grading plate, the height of the fourth grading plate is greater than the height of the third grading plate, the height of the third grading plate is greater than the height of the second grading plate, and the height of the second grading plate is greater than the height of the first grading plate.

[0008] As a preferred embodiment, the sewage discharge mechanism includes a dredging groove opened at the bottom of the reserved groove, a dredging pipe is fixedly installed on the graded filter box and located on the outside of the dredging groove, a release pipe is fixedly installed at one end of the dredging pipe away from the dredging groove, and a first solenoid valve is fixedly provided on the release pipe.

[0009] As a preferred solution, a first sewage inlet pipe is provided on the grading filter box and close to the first grading plate, and the first sewage inlet pipe is connected to the interior of the grading filter box.

[0010] As a preferred solution, the transmission mechanism includes a receiving tube symmetrically installed on both sides of the lifting pump, a water pump controller is fixedly provided on the receiving tube, a first bend is fixedly connected to the side of the receiving tube away from the lifting pump, a second solenoid valve is fixedly installed on the first bend, an end of the first bend away from the receiving tube is fixedly connected to the second bend, a straight pipe is fixedly connected to the second bend, and the first bend is fixedly connected to the support block.

[0011] As a preferred solution, a second sewage inlet pipe is fixedly installed on one of the straight pipes, a first outlet pipe is fixedly installed on the other straight pipe, a sixth solenoid valve is fixedly installed on the second sewage inlet pipe, the second sewage inlet pipe is connected to the graded filter box, a metal particle detector and a fourth solenoid valve are fixedly installed on the first outlet pipe, a second outlet pipe and a collecting pipe are sequentially opened at one end of the first outlet pipe away from the metal particle detector, and a fifth solenoid valve is fixedly installed between the second outlet pipe and the collecting pipe.

[0012] As a preferred solution, the connecting mechanism includes a first flushing pipe fixedly arranged on the second sewage inlet pipe and the first outlet pipe, and a third solenoid valve is fixedly arranged on the first flushing pipe.

[0013] As a preferred solution, the backwash mechanism includes a water pump fixedly mounted on a mounting seat, and a second flushing pipe is fixedly connected to one end of the first flushing pipe close to the water tank, and the second flushing pipe is connected to the water pump.

[0014] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it mainly has the following advantages:

[0015] When the device is used, after the sewage is transported to the inside of the grading filter box, it comes to between the grading filter box and the first grading plate. As the sewage continues to increase, the sewage is transported to between the first grading plate and the second grading plate through the water holes on the first grading plate. When the sewage between the first grading plate and the second grading plate reaches a certain height, the sewage is transported to between the second grading plate and the third grading plate through the water holes on the second grading plate. When the sewage between the second grading plate and the third grading plate reaches a certain height, the sewage is transported to between the third grading plate and the fourth grading plate through the water holes on the third grading plate. After the sewage reaches a certain height, the sewage is transported from the water holes on the fourth grading plate to between the fourth grading plate and the fifth grading plate. When the sewage between the fourth grading plate and the fifth grading plate reaches a certain height, the sewage is transported from the water holes on the fifth grading plate to between the fifth grading plate and the grading filter box. Since the metal particles in the sewage have a certain gravity, the sewage will stay inside the climbing space of each level during the process of climbing each level, and then the metal particles will be collected through the reserved groove. After collection, the sewage will be discharged by the sewage discharge mechanism, thereby reducing the situation where the metal particles cannot be recycled due to their presence in the sewage.

[0016] When the metal particle content is high, it is easy to cause blockage and damage to the lift pump, thereby starting the backwashing mechanism to backwash the inside of the lift pump and the graded filter box, thereby ensuring the normal operation of the lift pump.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a top view of the structure of an embodiment of the present invention;

[0019] Figure 2 It is a bottom view structural schematic diagram of an embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the internal structure of the graded filter box according to an embodiment of the present invention;

[0021] Figure 4 It is a partial structural schematic diagram of an embodiment of the present invention;

[0022] Figure 5 It is an enlarged schematic diagram of the structure at location A of an embodiment of the present invention.

[0023] Description of the reference numerals: 1. grading filter box; 2. first sewage inlet pipe; 3. first grading plate; 4. second grading plate; 5. third grading plate; 6. fourth grading plate; 7. fifth grading plate; 8. inclined plane; 9. water hole; 10. reserved groove; 11. dredging groove; 12. dredging pipe; 13. release pipe; 14. first solenoid valve; 15. base; 16. loading rack; 17. lifting pump; 18. receiving pipe; 19. water pump controller; 20. first A curved pipe; 21. a support block; 22. a second solenoid valve; 23. a second curved pipe; 24. a straight pipe; 25. a second sewage inlet pipe; 26. a first outlet pipe; 27. a first flushing pipe; 28. a third solenoid valve; 29. ​​a metal particle detector; 30. a fourth solenoid valve; 31. a fifth solenoid valve; 32. a second outlet pipe; 33. a collecting pipe; 34. a water tank; 35. a mounting seat; 36. a water pump; 37. a second flushing pipe; 38. a sixth solenoid valve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] See also Figures 1 to 5 The embodiment of the present invention provides a reuse device based on sewage treatment, including a grading filter box 1, a base 15 and a water tank 34, wherein the base 15 is fixedly arranged between the grading filter box 1 and the water tank 34, and the inner side of the grading filter box 1 is sequentially installed with a first grading plate 3, a second grading plate 4, a third grading plate 5, a fourth grading plate 6 and a fifth grading plate 7, and a reserved groove 10 is opened at the bottom between two adjacent ones, and a water-draining mechanism is fixedly arranged at one end of the first grading plate 3, the second grading plate 4, the third grading plate 5, the fourth grading plate 6 and the fifth grading plate 7 away from the reserved groove 10, and a sewage discharge mechanism is fixedly arranged on the outside of the bottom of the grading filter box 1;

[0027] A loading frame 16 is fixedly mounted on the base 15, and a plurality of support blocks 21 are symmetrically mounted on the loading frame 16. A plurality of lifting pumps 17 are fixedly mounted in the middle of the loading frame 16, and a transmission mechanism is disposed on both sides of the lifting pump 17. A connecting component is fixedly mounted between the two transmission mechanisms. A mounting seat 35 is fixedly mounted on the top of the outer side of the water tank 34, and a backwashing mechanism is fixedly mounted on the top of the mounting seat 35.

[0028] In this embodiment, the grading filter box 1 is used to hold and transport industrial sewage, the base 15 is used to load multiple lifting pumps 17, and the water tank 34 is used to use water for the backwashing mechanism when blockage occurs in the device. After the sewage is transported to the inside of the grading filter box 1, it comes between the grading filter box 1 and the first grading plate 3. As the sewage continues to increase, the sewage is transported to between the first grading plate 3 and the second grading plate 4 through the water holes 9 on the first grading plate 3. When the sewage between the first grading plate 3 and the second grading plate 4 reaches a certain height, the sewage is transported to between the second grading plate 4 and the third grading plate 5 through the water holes 9 on the second grading plate 4. When the sewage between the second grading plate 4 and the third grading plate 5 reaches a certain height, the sewage is transported to between the second grading plate 4 and the third grading plate 5 through the water holes 9 on the third grading plate 5. The sewage is transported to between the third grading plate 5 and the fourth grading plate 6 through the water hole 9. When the sewage between the third grading plate 5 and the fourth grading plate 6 reaches a certain height, the sewage is transported to between the fourth grading plate 6 and the fifth grading plate 7 through the water hole 9 on the fourth grading plate 6. When the sewage between the fourth grading plate 6 and the fifth grading plate 7 reaches a certain height, the sewage is transported to between the fifth grading plate 7 and the grading filter box 1 through the water hole 9 on the fifth grading plate 7. Since the metal particles in the sewage have a certain gravity, the sewage will stay inside the climbing space of each level during the climbing process of each level, and then the metal particles are collected through the reserved groove 10. After collection, the sewage is discharged by the sewage discharge mechanism, thereby reducing the situation where the metal particles cannot be recycled due to their presence in the sewage;

[0029] The water tank 34 is used to store clean water for backwashing. When the device detects that there are a large number of metal particles in the sewage, the backwashing mechanism can backwash the inside of the graded filter box 1 and the lifting pump 17. The clean water is the water stored after being filtered by the graded filter box 1 in the device, and there is no need to inject additional water into the water tank 34.

[0030] See also Figures 1 to 5The water-draining mechanism includes inclined surfaces 8 respectively provided on the first grading plate 3, the second grading plate 4, the third grading plate 5, the fourth grading plate 6 and the fifth grading plate 7, water holes 9 are evenly provided on the inclined surfaces 8, the height of the fifth grading plate 7 is greater than the height of the fourth grading plate 6, the height of the fourth grading plate 6 is greater than the height of the third grading plate 5, the height of the third grading plate 5 is greater than the height of the second grading plate 4, and the height of the second grading plate 4 is greater than the height of the first grading plate 3;

[0031] In the present embodiment, the heights of the first grading plate 3, the second grading plate 4, the third grading plate 5, the fourth grading plate 6 and the fifth grading plate 7 are different, and they are arranged in this order from low to high, and the lifting height between two adjacent ones is 70-160 cm. Through the water holes 9, the sewage can pass through the first grading plate 3, the second grading plate 4, the third grading plate 5, the fourth grading plate 6 and the fifth grading plate 7 in sequence, so that the sewage can be attached to the side of the first grading plate 3, the second grading plate 4, the third grading plate 5, the fourth grading plate 6 and the fifth grading plate 7 that is about to enter the water to a greater extent, thereby reducing the splashing of sewage, which is beneficial to improving the effect of sewage treatment.

[0032] See also Figures 1 to 5 The sewage discharge mechanism includes a dredging groove 11 opened at the bottom of the reserved groove 10, a dredging pipe 12 is fixedly installed on the graded filter box 1 and located outside the dredging groove 11, and a release pipe 13 is fixedly installed at one end of the dredging pipe 12 away from the dredging groove 11, and a first solenoid valve 14 is fixedly arranged on the release pipe 13;

[0033] In this embodiment, the reserved groove 10 is used to collect metal particles in sewage, and the dredging groove 11 is used to discharge the metal particles in the reserved groove 10 to the dredging pipe 12, and then introduced into the release pipe 13 by the dredging pipe 12. By opening and closing the first solenoid valve 14 on the release pipe 13, the fixed particles in the reserved groove 10 and part of the sewage are discharged at a fixed point, thereby ensuring the reuse of sewage.

[0034] See also Figures 1 to 5 A first sewage inlet pipe 2 is provided on the grading filter box 1 and near the first grading plate 3 . The first sewage inlet pipe 2 is connected to the interior of the grading filter box 1 . The first sewage inlet pipe 2 is used to introduce industrial wastewater into the interior of the grading filter box 1 .

[0035] See also Figures 1 to 5The transmission mechanism includes a receiving pipe 18 symmetrically installed on both sides of the lifting pump 17, a water pump controller 19 is fixedly arranged on the receiving pipe 18, a first elbow 20 is fixedly connected to the side of the receiving pipe 18 away from the lifting pump 17, a second solenoid valve 22 is fixedly installed on the first elbow 20, a second elbow 23 is fixedly connected to the end of the first elbow 20 away from the receiving pipe 18, a straight pipe 24 is fixedly connected to the second elbow 23, and the first elbow 20 is fixedly connected to the support block 21;

[0036] In this embodiment, the lifting pump 17 is used to pump sewage, the receiving tube 18 is used to load the water pump controller 19, the water pump controller 19 is used to monitor and control the start and stop, operation time, flow regulation and other functions of the lifting pump 17, the first curved pipe 20 is used to transport sewage, the second solenoid valve 22 is used to control whether the sewage can enter the lifting pump 17, and the second curved pipe 23 and the straight pipe 24 are used to transport sewage.

[0037] See also Figures 1 to 5 , a second sewage inlet pipe 25 is fixedly installed on one of the straight pipes 24, a first outlet pipe 26 is fixedly installed on the other straight pipe 24, a sixth solenoid valve 38 is fixedly installed on the second sewage inlet pipe 25, the second sewage inlet pipe 25 is connected to the graded filter box 1, a metal particle detector 29 and a fourth solenoid valve 30 are fixedly installed on the first outlet pipe 26, a second outlet pipe 32 and a collecting pipe 33 are sequentially opened at one end of the first outlet pipe 26 away from the metal particle detector 29, and a fifth solenoid valve 31 is fixedly installed between the second outlet pipe 32 and the collecting pipe 33;

[0038] In this embodiment, the second sewage inlet pipe 25 is used to transport sewage to the inside of the lift pump 17, the first outlet pipe 26 is used to output the sewage inside the lift pump 17, the sixth solenoid valve 38 is opened and closed to control whether the sewage can enter the lift pump 17, the fourth solenoid valve 30 is used to control whether the sewage in the lift pump 17 can be output, the second outlet pipe 32 is used to transport the sewage in the lift pump 17 out, the collecting pipe 33 is used to transport a part of the sewage to the water tank 34, and use it as the backwash water of the device after static sedimentation, the fifth solenoid valve 31 is used to control the collection of the backwash water, when the fifth solenoid valve 31 is closed, the water cannot flow out of the second outlet pipe 32, and directly enters the inside of the water tank 34, the collecting pipe 33 is equipped with the same solenoid valve as the fifth solenoid valve 31, when the solenoid valve is closed, the sewage is continuously output from the second outlet pipe 32;

[0039] The metal particle detector 29 is used to detect the metal particle content of the sewage after passing through the lifting pump 17. When the metal particle content is high, it is easy to cause blockage and damage to the lifting pump 17, thereby starting the backwashing mechanism to backwash the lifting pump 17 and the interior of the graded filter box 1.

[0040] See also Figures 1 to 5 The connecting mechanism includes a first flushing pipe 27 fixedly arranged on the second sewage inlet pipe 25 and the first outlet pipe 26, a third solenoid valve 28 is fixedly arranged on the first flushing pipe 27, and a second flushing pipe 37 is fixedly connected to one end of the first flushing pipe 27 close to the water tank 34. The second flushing pipe 37 is connected to the water pump 36, and is used to load the water pump 36 through the mounting seat 35. The water pump 36 is used to pump the sewage inside the water tank 34. When the device needs backwashing, it is pumped through the water pump 36, and at the same time, it passes through the second flushing pipe 37 and the first flushing pipe 27, and flushes the graded filter box 1 and the water tank 34 at the same time, so as to reduce the storage of metal particles in the graded filter box 1 and the lifting pump 17.

[0041] When in use, after the sewage is transported to the inside of the grading filter box 1, it comes between the grading filter box 1 and the first grading plate 3. As the sewage continues to increase, the sewage is transported to between the first grading plate 3 and the second grading plate 4 through the water holes 9 on the first grading plate 3. When the sewage between the first grading plate 3 and the second grading plate 4 reaches a certain height, the sewage is transported to between the second grading plate 4 and the third grading plate 5 through the water holes 9 on the second grading plate 4. When the sewage between the second grading plate 4 and the third grading plate 5 reaches a certain height, the sewage is transported to between the third grading plate 5 and the fourth grading plate 6 through the water holes 9 on the third grading plate 5. When the sewage between the third grading plate 5 and the fourth grading plate 6 reaches a certain height, the sewage is transported from the water holes 9 on the fourth grading plate 6 to between the fourth grading plate 6 and the fifth grading plate 7. When the sewage between the fourth grading plate 6 and the fifth grading plate 7 reaches a certain height, the sewage is transported from the water holes 9 on the fifth grading plate 7 to between the fifth grading plate 7 and the grading filter box 1. Since the metal particles in the sewage have a certain gravity, the sewage will stay in the climbing space of each level during the climbing process of each level, and then the metal particles will be collected through the reserved groove 10, and then discharged by the sewage discharge mechanism.

[0042] The second sewage inlet pipe 25 is used to transport sewage to the inside of the lift pump 17, and the first outlet pipe 26 is used to output the sewage inside the lift pump 17. The second outlet pipe 32 is used to transport the sewage in the lift pump 17 out, and the collecting pipe 33 is used to transport part of the sewage to the water tank 34. After static sedimentation, it is used as the backwash water of the device. The fifth electromagnetic valve 31 is used to control the collection of the backwash water. When the fifth electromagnetic valve 31 is closed, the water cannot flow out of the second outlet pipe 32 and directly enters the inside of the water tank 34. The collecting pipe 33 is equipped with a solenoid valve similar to the fifth electromagnetic valve 31. When the electromagnetic valve is closed, the sewage is continuously output from the second outlet pipe 32.

[0043] The metal particle detector 29 is used to detect the metal particle content of the sewage after passing through the lifting pump 17. When the metal particle content is high, it is easy to cause blockage and damage to the lifting pump 17, so as to start the backwashing mechanism to backwash the lifting pump 17 and the interior of the graded filter box 1, thereby reducing the situation where the metal particles cannot be recycled due to their presence in the sewage.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wastewater treatment-based recycling device, characterized in that: The invention comprises a grading filter box (1), a base (15) and a water tank (34), wherein the base (15) is fixedly arranged between the grading filter box (1) and the water tank (34), wherein a first grading plate (3), a second grading plate (4), a third grading plate (5), a fourth grading plate (6) and a fifth grading plate (7) are sequentially installed on the inner side of the grading filter box (1), and a reserved groove (10) is provided at the bottom between two adjacent ones of the grading plates, and a water-draining mechanism is fixedly arranged at one end of the first grading plate (3), the second grading plate (4), the third grading plate (5), the fourth grading plate (6) and the fifth grading plate (7) away from the reserved groove (10), and a sewage discharge mechanism is fixedly arranged on the outside of the bottom of the grading filter box (1); A loading frame (16) is fixedly mounted on the base (15), a plurality of support blocks (21) are symmetrically mounted on the loading frame (16), a plurality of lifting pumps (17) are fixedly mounted in the middle of the loading frame (16), a transmission mechanism is disposed on both sides of the lifting pump (17), a connecting assembly is fixedly disposed between two of the transmission mechanisms, a mounting seat (35) is fixedly mounted on the top of the outer side of the water tank (34), and a backwashing mechanism is fixedly disposed on the top of the mounting seat (35).

2. A sewage treatment-based recycling device according to claim 1, characterized in that: The water-repellent mechanism comprises inclined surfaces (8) respectively provided on the first grading plate (3), the second grading plate (4), the third grading plate (5), the fourth grading plate (6) and the fifth grading plate (7); water holes (9) are evenly provided on the inclined surfaces (8); the height of the fifth grading plate (7) is greater than the height of the fourth grading plate (6); the height of the fourth grading plate (6) is greater than the height of the third grading plate (5); the height of the third grading plate (5) is greater than the height of the second grading plate (4); and the height of the second grading plate (4) is greater than the height of the first grading plate (3).

3. The sewage treatment-based recycling equipment according to claim 1, characterized in that: The sewage discharge mechanism comprises a dredging groove (11) provided at the bottom of the reserved groove (10); a dredging pipe (12) is fixedly installed on the graded filter box (1) and located outside the dredging groove (11); a release pipe (13) is fixedly installed at one end of the dredging pipe (12) away from the dredging groove (11); and a first solenoid valve (14) is fixedly arranged on the release pipe (13).

4. The sewage treatment-based recycling equipment according to claim 1, characterized in that: A first sewage inlet pipe (2) is provided on the grading filter box (1) and close to the first grading plate (3), and the first sewage inlet pipe (2) is connected to the interior of the grading filter box (1).

5. The sewage treatment-based recycling equipment according to claim 1, characterized in that: The transmission mechanism comprises a receiving pipe (18) symmetrically mounted on both sides of the lifting pump (17); a water pump controller (19) is fixedly arranged on the receiving pipe (18); a first curved pipe (20) is fixedly connected to the side of the receiving pipe (18) away from the lifting pump (17); a second solenoid valve (22) is fixedly mounted on the first curved pipe (20); a second curved pipe (23) is fixedly connected to the end of the first curved pipe (20) away from the receiving pipe (18); a straight pipe (24) is fixedly connected to the second curved pipe (23); and the first curved pipe (20) is fixedly connected to the support block (21).

6. The sewage treatment-based recycling equipment according to claim 5, characterized in that: A second sewage inlet pipe (25) is fixedly mounted on one of the straight pipes (24), a first outlet pipe (26) is fixedly mounted on the other straight pipe (24), a sixth solenoid valve (38) is fixedly mounted on the second sewage inlet pipe (25), the second sewage inlet pipe (25) is connected to the graded filter box (1), a metal particle detector (29) and a fourth solenoid valve (30) are fixedly mounted on the first outlet pipe (26), a second outlet pipe (32) and a collecting pipe (33) are sequentially provided at one end of the first outlet pipe (26) away from the metal particle detector (29), and a fifth solenoid valve (31) is fixedly mounted between the second outlet pipe (32) and the collecting pipe (33).

7. The sewage treatment-based recycling equipment according to claim 1, characterized in that: The connection mechanism comprises a first flushing pipe (27) fixedly arranged on the second sewage inlet pipe (25) and the first outlet pipe (26), and a third solenoid valve (28) is fixedly arranged on the first flushing pipe (27).

8. The sewage treatment-based recycling equipment according to claim 7, characterized in that: The backwashing mechanism comprises a water pump (36) fixedly mounted on a mounting seat (35); one end of the first flushing pipe (27) close to the water tank (34) is fixedly connected to a second flushing pipe (37); and the second flushing pipe (37) is connected to the water pump (36).

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