Sewage detection device

Abstract

The invention discloses a sewage detection device, which is arranged in cooperation with a pipe body, and comprises: a filter cartridge, which is hermetically and fixedly connected with the inner wall of the pipe body; the sewage detector comprises a detector body and a detection probe connected with the bottom of the detector body; the detector body is mounted outside the pipe body, and the detection probe penetrates through the pipe body in a sealing manner and extends into the filter cartridge from the open end of the filter cartridge; the cleaning mechanism comprises a power assembly and a cleaning assembly arranged on the filter cartridge in a sliding and sleeving manner, and a plurality of filter holes are formed in the peripheral wall of the filter cartridge; according to the invention, the filter cartridge is arranged, the detection probe is arranged in the filter cartridge, sewage firstly passes through the filter cartridge before flowing through the detection probe, and the filter cartridge intercepts impurities in the sewage, so that the risk that the detection probe is blocked by the impurities in the sewage can be reduced, and the detection effect is prevented from being influenced by the blockage of the detection probe.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage detection, and in particular relates to a sewage detection device. Background Art

[0002] With the rapid development of industrialization and urbanization, sewage discharge is becoming increasingly serious. Sewage not only threatens the human living environment, but also has a serious impact on the natural ecological balance. Toxic substances contained in sewage, such as heavy metals, organic pollutants, and ammonia nitrogen, can cause soil pollution, water pollution, and even affect human health. At present, the control of chemical plant sewage is generally to test the discharge and formulate discharge standards. Therefore, it is necessary to test the sewage at the sewage discharge end to determine whether the sewage discharged by the chemical plant meets the discharge standards.

[0003] A Chinese utility model patent with publication number CN214618459U discloses a sewage detector for detecting sewage discharge from a chemical plant, comprising a sewage pipe, a sewage detector body, and a fixing mechanism for fixing the sewage detector body to the sewage pipe; the fixing mechanism comprises an upper clamp and a lower clamp, one end of the upper clamp and the lower clamp are hinged, and the other end is connected by a positioning bolt, and the upper clamp is symmetrically provided with grooves for placing shock-absorbing components.

[0004] Although this sewage detection device can reduce the vibration transmitted from the sewage pipe to the sewage detector, because the detection probe of the sewage detector is always in the sewage pipe, it is easy to be blocked by impurities in the sewage and affect the detection effect. Summary of the invention

[0005] The object of the present invention is to provide a sewage detection device to solve at least one of the above technical problems.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A sewage detection device, arranged in conjunction with a pipe body, comprises:

[0008] A filter cartridge, which is fixed to the inner wall of the tube body, and the length direction of the filter cartridge is consistent with the radial direction of the tube body;

[0009] A sewage detector, the sewage detector comprising a detector body and a detection probe connected to the bottom of the detector body; the detector body is installed outside the tube body, the detection probe is sealed and penetrates the tube body and extends from the open end of the filter cartridge into the filter cartridge; the sewage detector is used for sewage detection, wherein the detection probe needs to be extended into the sewage and contact with the sewage to achieve the purpose of real-time sewage detection;

[0010] The cleaning mechanism includes a power component and a cleaning component slidably mounted on the filter cartridge. The peripheral wall of the filter cartridge is provided with a plurality of filter holes. The power component drives the cleaning component to move along the length direction of the filter cartridge to clean the filter holes on the filter cartridge wall.

[0011] The present invention provides a filter cartridge and places the detection probe inside the filter cartridge. The sewage will first pass through the filter cartridge before flowing through the detection probe. The filter cartridge intercepts impurities in the sewage, thereby reducing the risk of the detection probe being blocked by impurities in the sewage and avoiding the detection effect being affected by the detection probe being blocked.

[0012] The present invention also provides a cleaning mechanism for cleaning the filter cartridge to prevent impurities from clogging the filter holes of the filter cartridge and affecting the flow of sewage into the filter cartridge and contact with the detection probe, wherein the power component is used to drive the cleaning component to slide on the outer periphery of the filter cartridge to achieve cleaning of the filter cartridge.

[0013] Furthermore, the power assembly includes an impeller, a first transmission shaft, a first connecting rod and a second connecting rod. The first transmission shaft is coaxially rotatably installed in the tube body, and the impeller is coaxially installed on the first transmission shaft. The first transmission shaft is fixedly connected to one end of the first connecting rod to drive the first connecting rod to rotate. The free end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the end of the second connecting rod away from the first connecting rod is rotatably connected to the cleaning assembly; the first connecting rod rotates to drive the cleaning assembly to move along the length direction of the filter cartridge. By arranging an impeller, the device can use sewage to drive the impeller to rotate, and then drive the first transmission rod to rotate. The first transmission rod, the first connecting rod, the second connecting rod and the cleaning assembly together constitute a crank-connecting rod mechanism, which converts the rotation of the first transmission rod into a linear sliding of the cleaning assembly, so as to achieve the purpose of using sewage to drive the cleaning assembly to slide back and forth along the axis of the filter cartridge, so as to achieve the purpose of cleaning the filter holes on the peripheral wall of the filter cartridge.

[0014] Furthermore, the cleaning mechanism also includes a second transmission shaft, a third transmission shaft, a first gear, a second gear, a third gear and a fourth gear. The second transmission shaft and the third transmission shaft are both rotatably mounted in the tube body, and the axial directions of the second transmission shaft and the third transmission shaft are both parallel to the axial direction of the tube body. The first gear is coaxially fixed on the first transmission shaft, the second gear and the third gear are both coaxially fixed on the second transmission shaft, and the fourth gear is coaxially fixed on the third transmission shaft. The first gear is meshed with the second gear, and the third gear is meshed with the fourth gear. The diameter of the first gear is smaller than the diameter of the second gear, and the diameter of the third gear is smaller than the diameter of the fourth gear. The third transmission shaft is fixedly connected to the fixed end of the first connecting rod, and the second gear is driven to rotate by setting the first gear The second gear drives the third gear to rotate, and the third gear drives the fourth gear to rotate, thereby realizing that the third transmission shaft is driven to rotate by the first transmission shaft. Among them, because the diameter of the first gear is smaller than the diameter of the second gear, when the first gear drives the second gear to rotate, the speed of the second gear will be smaller than the speed of the first gear. The second gear and the third gear are coaxially fixedly connected, so the speed of the second gear is consistent with the third gear, and the diameter of the third gear is smaller than the diameter of the fourth gear. Therefore, the speed of the fourth gear will be smaller than the speed of the third gear. When the first transmission shaft drives the third transmission shaft to rotate, the speed is reduced twice, which can greatly reduce the speed transmitted from the first transmission shaft to the third transmission shaft. At the same time, it can correspondingly increase the torque transmitted from the first transmission shaft to the third transmission shaft, which is more conducive to the third transmission shaft driving the cleaning component to move; the second transmission shaft is provided for installing the second gear and the third gear.

[0015] Furthermore, the first transmission shaft and the third transmission shaft are coaxially arranged and rotationally connected, which can enhance the stability of the first transmission shaft and the third transmission shaft; preferably, the first transmission shaft and the third transmission shaft can be rotationally connected via a bearing.

[0016] Furthermore, the cleaning assembly includes a slip ring, a first mounting ring fixedly connected to the slip ring, and a first annular brush; the slip ring and the first mounting ring are both sleeved on the filter cartridge and slidably connected to the filter cartridge; the first annular brush is fixedly mounted on the inner circumferential wall of the first mounting ring and abuts against the outer circumferential wall of the filter cartridge; the end of the second connecting rod is rotatably connected to the slip ring; the slip ring slides along the axial direction of the filter cartridge, so that the first transmission rod, the first connecting rod, the second connecting rod and the cleaning assembly can form a crank-connecting rod mechanism; the first mounting ring is provided for the installation of the first annular brush, so that the first annular brush can be easily installed at the filter hole opened on the circumferential wall of the filter cartridge; the first annular brush is provided for cleaning the filter hole opened on the circumferential wall of the filter cartridge.

[0017] Furthermore, the filter cartridge comprises:

[0018] A fixing part, which is fixedly connected to the inner wall of the tube body and has a passage for the detection probe to pass through, and the fixing part is provided to facilitate the sliding connection between the slip ring and the filter cartridge;

[0019] The filter part is connected to the free end of the fixing part, a plurality of filter holes are formed by penetrating the filter part, the detection probe is located in the filter part, and the sliding range of the first annular brush covers the filter holes.

[0020] Furthermore, a first magnetic ring is coaxially mounted on the inner circumferential wall of the first mounting ring, a second mounting ring is slidably connected in the filter cartridge, a second magnetic ring coaxially mounted on the outer circumferential wall of the second mounting ring cooperates with the first magnetic ring, the first magnetic ring slides to drive the second magnetic ring to follow the first magnetic ring to slide, two second annular brushes are coaxially mounted on the outer circumferential wall of the second mounting ring, the first annular brush is located between the two second annular brushes; by cooperating with the first magnetic ring and the second magnetic ring, the first magnetic ring can drive the second magnetic ring to move, and the first magnetic ring is mounted on the first mounting ring, so that the second magnetic ring can be moved by The first mounting ring drives the second mounting ring to move, and the second mounting ring slides axially in the filter cartridge along the filter cartridge, and can drive the second annular brush to clean the filter holes opened on the peripheral wall of the filter cartridge from the inside of the filter cartridge, so that the cleaning effect is better. When cleaning the filter holes, the first annular brush may brush impurities into the filter holes, and the second annular brush can be provided to brush out the impurities brushed into the filter holes from the outside of the filter cartridge by the first annular brush. The first annular brush is between the two second annular brushes, and the impurities brushed into the filter holes by the first annular brush in the reciprocating motion can be brushed out of the filter holes by the second annular brush following closely.

[0021] Furthermore, the filter cartridge also includes a slag discharge part, which is connected to the free end of the filter part, and a slag discharge hole is provided on the end face of the slag discharge part. A one-way valve is slidably connected in the filter cartridge, and the one-way valve is coaxially arranged with the slag discharge part, and the one-way valve is located between the end face of the slag discharge part and the detection probe, and the one-way valve is fixedly connected to the second mounting ring; the one-way valve is between the filter hole and the slag discharge hole; although a second annular brush is provided, smaller impurities may still enter the filter cartridge, and by providing a slag discharge hole on the end face of the slag discharge part, cooperating with the one-way valve and the filter hole, the one-way valve can discharge the sewage in the filter cartridge from the slag discharge hole when making a reciprocating motion, thereby driving the impurities in the filter cartridge to be discharged outside the filter cartridge, and also accelerating the flow of sewage into the filter cartridge.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention provides a filter cartridge and places the detection probe inside the filter cartridge. The sewage will first pass through the filter cartridge before flowing through the detection probe. The filter cartridge intercepts impurities in the sewage, thereby reducing the risk of the detection probe being blocked by impurities in the sewage and preventing the detection probe from being blocked and affecting the detection effect.

[0024] (2) The present invention also provides a cleaning mechanism for cleaning the filter cartridge to prevent impurities from clogging the filter holes of the filter cartridge and affecting the flow of sewage into the filter cartridge and contact with the detection probe, wherein the power component is used to drive the cleaning component to slide on the outer periphery of the filter cartridge to achieve cleaning of the filter cartridge;

[0025] (3) The present invention can utilize sewage to drive the impeller to rotate by setting an impeller, thereby driving the first transmission rod to rotate. The first transmission rod, the first connecting rod, the second connecting rod and the cleaning assembly together constitute a crank-connecting rod mechanism, which converts the rotation of the first transmission rod into a linear sliding of the cleaning assembly, so as to utilize sewage to drive the cleaning assembly to slide back and forth along the axis of the filter cartridge, thereby achieving the purpose of cleaning the filter holes on the peripheral wall of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a sewage detection device in this embodiment;

[0027] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0028] In the figure: 1. tube body; 2. filter cartridge; 3. sewage detector; 31. detector body; 32. detection probe; 4. cleaning mechanism; 41. power assembly; 411. impeller; 412. first transmission shaft; 413. first connecting rod; 414. second connecting rod; 415. second transmission shaft; 416. third transmission shaft; 417. first gear; 418. second gear; 419. third gear; 4110. fourth gear; 42. cleaning assembly; 421. slip ring; 422. first mounting ring; 423. first annular brush; 424. first magnetic ring; 425. second mounting ring; 426. second magnetic ring; 427. second annular brush; 5. one-way valve. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1 and Figure 2As shown, this embodiment provides a sewage detection device, which is arranged in conjunction with a pipe body 1, and includes:

[0031] A filter cartridge 2 is fixedly mounted on the inner wall of the tube body 1, and the length direction of the filter cartridge 2 is consistent with the radial direction of the tube body 1;

[0032] A sewage detector 3, the sewage detector 3 comprises a detector body 31 and a detection probe 32 connected to the bottom of the detector body 31; the detector body 31 is installed outside the tube body 1, and the detection probe 32 is sealed and penetrates the tube body 1 and extends from the open end of the filter cartridge 2 into the filter cartridge 2; the sewage detector 3 is set for sewage detection, wherein the detection probe 32 needs to be extended into the sewage and contact with the sewage to achieve the purpose of real-time sewage detection;

[0033] The cleaning mechanism 4 includes a power component 41 and a cleaning component 42 slidably mounted on the filter cartridge 2. The peripheral wall of the filter cartridge 2 is provided with a plurality of filter holes. The power component 41 drives the cleaning component 42 to move along the length direction of the filter cartridge 2 to clean the filter holes on the filter cartridge 2 wall.

[0034] The present invention sets a filter cartridge 2 and places a detection probe 32 inside the filter cartridge 2. The sewage will first pass through the filter cartridge 2 before flowing through the detection probe 32. The filter cartridge 2 intercepts impurities in the sewage, thereby reducing the risk of the detection probe 32 being blocked by impurities in the sewage and avoiding the detection probe 32 being blocked and affecting the detection effect.

[0035] The present invention also provides a cleaning mechanism 4 for cleaning the filter cartridge 2 to prevent impurities from clogging the filter holes of the filter cartridge 2 and affecting the flow of sewage into the filter cartridge 2 and contact with the detection probe 32, wherein the power component 41 is used to drive the cleaning component 42 to slide on the outer periphery of the filter cartridge 2 to achieve cleaning of the filter cartridge 2.

[0036] Furthermore, the power assembly 41 includes an impeller 411, a first transmission shaft 412, a first connecting rod 413 and a second connecting rod 414. The first transmission shaft 412 is coaxially rotatably mounted in the tube body 1. The impeller 411 is coaxially mounted on the first transmission shaft 412. The first transmission shaft 412 is fixedly connected to one end of the first connecting rod 413 to drive the first connecting rod 413 to rotate. The free end of the first connecting rod 413 is rotatably connected to one end of the second connecting rod 414. The end of the second connecting rod 414 away from the first connecting rod 413 is connected to the cleaning assembly 1. The cleaning component 42 is rotatably connected; the first connecting rod 413 rotates to drive the cleaning component 42 to move along the length direction of the filter cartridge 2. By setting an impeller 411, the device can use sewage to drive the impeller 411 to rotate, and then drive the first transmission rod to rotate. The first transmission rod, the first connecting rod 413, the second connecting rod 414 and the cleaning component 42 together constitute a crank-connecting rod mechanism, which converts the rotation of the first transmission rod into a linear sliding of the cleaning component 42, so as to use sewage to drive the cleaning component 42 to slide back and forth along the axis of the filter cartridge 2, so as to achieve the purpose of cleaning the filter holes on the peripheral wall of the filter cartridge 2.

[0037] Furthermore, the cleaning mechanism 4 also includes a second transmission shaft 415, a third transmission shaft 416, a first gear 417, a second gear 418, a third gear 419 and a fourth gear 4110, the second transmission shaft 415 and the third transmission shaft 416 are both rotatably mounted in the tube body 1, and the axial direction of the second transmission shaft 415 and the axial direction of the third transmission shaft 416 are both parallel to the axial direction of the tube body 1, the first gear 417 is coaxially fixed on the first transmission shaft 412, and the second gear 418 and the third gear 419 are coaxially fixed. On the second transmission shaft 415, the fourth gear 4110 is coaxially fixed to the third transmission shaft 416, the first gear 417 is meshed with the second gear 418, the third gear 419 is meshed with the fourth gear 4110, the diameter of the first gear 417 is smaller than the diameter of the second gear 418, and the diameter of the third gear 419 is smaller than the diameter of the fourth gear 4110; the third transmission shaft 416 is fixedly connected to the fixed end of the first connecting rod 413, and the second gear 418 is driven to rotate by setting the first gear 417, The second gear 418 drives the third gear 419 to rotate, and the third gear 419 drives the fourth gear 4110 to rotate, thereby realizing that the third transmission shaft 416 is driven to rotate through the first transmission shaft 412. Among them, because the diameter of the first gear 417 is smaller than the diameter of the second gear 418, when the first gear 417 drives the second gear 418 to rotate, the speed of the second gear 418 will be lower than the speed of the first gear 417. The second gear 418 and the third gear 419 are coaxially fixedly connected, so the speeds of the second gear 418 and the third gear 419 are consistent, and the diameter of the third gear 419 is smaller than the diameter of the second gear 418. The diameter is smaller than the diameter of the fourth gear 4110, so the rotation speed of the fourth gear 4110 will be lower than the rotation speed of the third gear 419. When the first transmission shaft 412 drives the third transmission shaft 416 to rotate, the rotation speed is reduced twice, which can greatly reduce the rotation speed transmitted from the first transmission shaft 412 to the third transmission shaft 416. At the same time, the torque transmitted from the first transmission shaft 412 to the third transmission shaft 416 can be increased accordingly, which is more conducive to the third transmission shaft 416 to drive the cleaning component 42 to move; the second transmission shaft 415 is provided for installing the second gear 418 and the third gear 419.

[0038] Furthermore, the first transmission shaft 412 and the third transmission shaft 416 are coaxially arranged and rotationally connected, which can enhance the stability of the first transmission shaft 412 and the third transmission shaft 416; preferably, the first transmission shaft 412 and the third transmission shaft 416 can be rotationally connected via a bearing.

[0039] Furthermore, the cleaning assembly 42 includes a slip ring 421, a first mounting ring 422 fixedly connected to the slip ring 421, and a first annular brush 423. The slip ring 421 and the first mounting ring 422 are both sleeved on the filter cartridge 2 and slidably connected to the filter cartridge 2. The first annular brush 423 is fixedly mounted on the inner circumferential wall of the first mounting ring 422 and abuts against the outer circumferential wall of the filter cartridge 2. The sliding range of the first annular brush 423 is consistent with the filter hole opened on the circumferential wall of the filter cartridge 2. The positions correspond; the end of the second connecting rod 414 is rotatably connected to the slip ring 421; the slip ring 421 slides along the axial direction of the filter cartridge 2, so that the first transmission rod, the first connecting rod 413, the second connecting rod 414 and the cleaning assembly 42 can form a crank-connecting rod mechanism, and the first mounting ring 422 is provided for the installation of the first annular brush 423, so that the first annular brush 423 can be installed at the filter hole opened on the peripheral wall of the filter cartridge 2, and the first annular brush 423 is provided for cleaning the filter hole opened on the peripheral wall of the filter cartridge 2.

[0040] Furthermore, the filter cartridge 2 comprises:

[0041] The fixing part is fixedly connected to the inner wall of the tube body 1 and has a passage for the detection probe 32 to pass through. The fixing part is provided to facilitate the sliding connection between the slip ring 421 and the filter cartridge 2. The fixing part is also provided to prevent the formation of a dead water area in the area of ​​the filter cartridge 2 close to the inner wall of the tube body 1, thereby affecting the accuracy of sewage detection.

[0042] The filter portion is connected to the free end of the fixing portion, a plurality of filter holes are formed by penetrating the filter portion, the detection probe 32 is located in the filter portion, and the sliding range of the first annular brush 423 covers the filter holes.

[0043] Further, a first magnetic ring 424 is coaxially mounted on the inner peripheral wall of the first mounting ring 422, a second mounting ring 425 is slidably connected in the filter cartridge 2, a second magnetic ring 426 cooperating with the first magnetic ring 424 is coaxially mounted on the outer peripheral wall of the second mounting ring 425, the first magnetic ring 424 slides to drive the second magnetic ring 426 to slide following the first magnetic ring 424, two second annular brushes 427 are coaxially mounted on the outer peripheral wall of the second mounting ring 425, the first annular brush 423 is located between the two second annular brushes 427; by cooperating with the first magnetic ring 424 and the second magnetic ring 426, the first magnetic ring 424 can drive the second magnetic ring 426 to move, and the first magnetic ring 424 is mounted on the first mounting ring 42 2, therefore, the second mounting ring 425 can be driven to move by the first mounting ring 422, and the second mounting ring 425 can slide in the filter cartridge 2 along the axial direction, and can drive the second annular brush 427 to clean the filter holes opened on the peripheral wall of the filter cartridge 2 from the inside of the filter cartridge 2, so that the cleaning effect is better. When cleaning the filter holes, the first annular brush 423 may brush impurities into the filter holes, and the second annular brush 427 can be used to brush out the impurities brushed into the filter holes from the outside of the filter cartridge 2 by the first annular brush 423, and the first annular brush 423 is between the two second annular brushes 427. When the first annular brush 423 is in reciprocating motion, the impurities brushed into the filter holes can be brushed out of the filter holes by the second annular brush 427 following closely.

[0044] Furthermore, the filter cartridge 2 further comprises a slag discharge portion, which is connected to the free end of the filter portion, and a slag discharge hole (not shown in the figure) is provided on the end face of the slag discharge portion, and a one-way valve 5 is slidably connected in the filter cartridge 2, the one-way valve 5 is coaxially arranged with the slag discharge portion, and the one-way valve 5 is located between the end face of the slag discharge portion and the detection probe 32, and the one-way valve 5 is fixedly connected to the second mounting ring 425; the one-way valve 5 is between the filter hole and the slag discharge hole; although the second annular brush 427 is provided, smaller impurities may still enter the filter cartridge 2, and by providing a slag discharge hole on the end face of the slag discharge portion, cooperating with the one-way valve 5 and the filter hole, the one-way valve 5 makes a reciprocating motion, The sewage in the filter cartridge 2 can be discharged from the slag discharge hole, thereby driving the impurities in the filter cartridge 2 to be discharged outside the filter cartridge 2, and at the same time, it can also accelerate the sewage to flow into the filter cartridge 2; specifically, when the one-way valve 5 moves away from the detection probe 32, the one-way valve 5 is in a closed state, and when the one-way valve 5 moves close to the detection probe 32, the one-way valve 5 opens, so that impurities entering the filter cartridge 2 from the filter hole can fall into the slag discharge part. When the one-way valve 5 is close to the end face of the slag discharge part, the sewage can be discharged from the slag discharge hole to the slag discharge part, and the impurities in the slag discharge part can be discharged from the filter cartridge 2. In this process, the sewage outside the filter cartridge 2 can also be driven to enter the filter cartridge 2 from the filter hole, thereby accelerating the sewage exchange speed inside and outside the filter cartridge 2.

[0045] It should be noted that although the present invention is disclosed as above by specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A sewage detection device, arranged in conjunction with a pipe body, characterized in that: include: A filter cartridge, which is fixed to the inner wall of the tube body, and the length direction of the filter cartridge is consistent with the radial direction of the tube body; A sewage detector, the sewage detector comprising a detector body and a detection probe connected to the bottom of the detector body; the detector body is installed outside the tube body, and the detection probe is sealed and penetrates the tube body and extends from the open end of the filter cartridge into the filter cartridge; The cleaning mechanism includes a power component and a cleaning component slidably mounted on the filter cartridge. The peripheral wall of the filter cartridge is provided with a plurality of filter holes. The power component drives the cleaning component to move along the length direction of the filter cartridge to clean the filter holes on the filter cartridge wall.

2. The sewage detection device according to claim 1, characterized in that: The power assembly includes an impeller, a first transmission shaft, a first connecting rod and a second connecting rod. The first transmission shaft is coaxially rotatably installed in the tube body, and the impeller is coaxially installed on the first transmission shaft. The first transmission shaft is fixedly connected to one end of the first connecting rod to drive the first connecting rod to rotate. The free end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the end of the second connecting rod away from the first connecting rod is rotatably connected to the cleaning assembly; the first connecting rod rotates to drive the cleaning assembly to move along the length direction of the filter cartridge.

3. The sewage detection device according to claim 2, characterized in that: The cleaning mechanism also includes a second transmission shaft, a third transmission shaft, a first gear, a second gear, a third gear and a fourth gear. The second transmission shaft and the third transmission shaft are both rotatably mounted in the tube body, and the axial directions of the second transmission shaft and the third transmission shaft are both parallel to the axial direction of the tube body. The first gear is coaxially fixed on the first transmission shaft, the second gear and the third gear are both coaxially fixed on the second transmission shaft, and the fourth gear is coaxially fixed on the third transmission shaft. The first gear is meshed with the second gear, and the third gear is meshed with the fourth gear. The diameter of the first gear is smaller than the diameter of the second gear, and the diameter of the third gear is smaller than the diameter of the fourth gear. The third transmission shaft is fixedly connected to the fixed end of the first connecting rod.

4. The sewage detection device according to claim 3, characterized in that: The first transmission shaft and the third transmission shaft are coaxially arranged and rotationally connected.

5. The sewage detection device according to claim 2, characterized in that: The cleaning assembly comprises a slip ring, a first mounting ring fixedly connected to the slip ring, and a first annular brush, wherein the slip ring and the first mounting ring are both sleeved on the filter cartridge and slidably connected to the filter cartridge, and the first annular brush is fixedly mounted on the inner peripheral wall of the first mounting ring and abuts against the outer peripheral wall of the filter cartridge; The end of the second connecting rod is rotatably connected to the slip ring.

6. The sewage detection device according to claim 5, characterized in that: The filter cartridge comprises: A fixing part, which is fixedly connected to the inner wall of the tube body and has a passage for the detection probe to pass through; The filter part is connected to the free end of the fixing part, a plurality of filter holes are formed by penetrating the filter part, the detection probe is located in the filter part, and the sliding range of the first annular brush covers the filter holes.

7. The sewage detection device according to claim 6, characterized in that: A first magnetic ring is coaxially mounted on the inner circumferential wall of the first mounting ring, a second mounting ring is slidably connected inside the filter cartridge, a second magnetic ring coaxially mounted on the outer circumferential wall of the second mounting ring that cooperates with the first magnetic ring, the first magnetic ring slides to drive the second magnetic ring to follow the first magnetic ring to slide, and two second annular brushes are coaxially mounted on the outer circumferential wall of the second mounting ring.

8. The sewage detection device according to claim 7, characterized in that: The first annular brush is located between the two second annular brushes.

9. The sewage detection device according to claim 7, characterized in that: The filter cartridge also includes a slag discharge portion, which is connected to the free end of the filter portion, and a slag discharge hole is opened on the end face of the slag discharge portion. A one-way valve is slidably connected inside the filter cartridge, and the one-way valve is coaxially arranged with the slag discharge portion. The one-way valve is located between the end face of the slag discharge portion and the detection probe, and the one-way valve is fixedly connected to the second mounting ring.

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