A sewage detection device and its usage method

Abstract

The present invention is applicable to the technical field of sewage detection, and provides a sewage detection device and a method for using the same, including a housing, a sampling assembly and a detection assembly; the sampling assembly includes a plurality of sampling tubes, a first compression spring, a push plate, a telescopic rod A, a telescopic rod B and an opening and closing structure, and the opening and closing structure includes a sliding plate, a guide roller, a sealing belt, a winding roller, a volute spring, a telescopic rod C, a rack and a gear. In the present invention, by providing a housing, a sampling assembly and a detection assembly; when the telescopic amounts of the telescopic rod A and the telescopic rod B are the same, the push plate is kept horizontal to synchronously adjust the height positions of the top openings of all the sampling tubes, so that sampling can be carried out at the same depth. When the telescopic amounts of the telescopic rod A and the telescopic rod B are different, the push plate is inclined, so that the top openings of the plurality of sampling tubes are at different height positions, thereby sampling at different depths. By adjusting the telescopic amounts of the telescopic rod A and the telescopic rod B, the sampling depth can be adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage detection, and particularly relates to a sewage detection device and a using method thereof. Background Art

[0002] Sewage detection is an important part of current environmental protection. For example, sewage detection for preventing river pollution, sewage detection in sewage treatment plants, and other aspects. When detecting sewage, it is necessary to take samples of the sewage and then conduct tests. In the existing sewage detection sampling technology, generally, multiple sampling holes are opened vertically downward on the sampling cylinder for sampling at different depths. However, there are problems with this method. When it is necessary to sample at multiple positions at the same depth, another sampling device needs to be replaced. Moreover, since the positions of the multiple opened sampling holes are fixed, the sampling depth is relatively non-adjustable. Summary of the Invention

[0003] The present invention provides a sewage detection device to solve the above problems.

[0004] The present invention is implemented as follows. A sewage detection device includes:

[0005] A housing, an installation cavity and a detection cavity are provided inside the housing, and the installation cavity is located above the detection cavity;

[0006] A sampling assembly disposed in the installation cavity;

[0007] A detection assembly disposed in the detection cavity;

[0008] The sampling assembly includes:

[0009] Multiple sampling tubes arranged vertically at intervals, the top ends of the sampling tubes are open and extend above the housing;

[0010] A first compression spring sleeved on the sampling tube, and both ends of the first compression spring abut against the top of the housing and the bottom end of the sampling tube respectively;

[0011] A push plate disposed on the lower sides of the multiple sampling tubes, both ends of the push plate are respectively connected with a telescopic rod A and a telescopic rod B, both ends of the telescopic rod A are respectively hinged to the top of the housing and one end of the push plate, one end of the telescopic rod B is fixedly connected to the top of the housing, and the other end is hinged to the other end of the push plate;

[0012] An opening and closing structure for opening or closing the top openings of the sampling tubes.

[0013] Preferably, an adjusting mechanism is installed on the housing for adjusting the distance between adjacent sampling tubes.

[0014] Preferably, the adjusting mechanism includes:

[0015] A slide seat is arranged on the upper side of the shell and is sleeved on each sampling tube. The slide seat is slidably connected to the top of the shell. A slide groove for the slide seat to be slidably connected and a through groove for the sampling tube to move can be opened on the top of the shell;

[0016] A scissor-type mechanism connected between all the slide seats, wherein each middle hinge point of the scissor-type mechanism is hinged to a slide seat;

[0017] The adjusting screw rotatably mounted on the top of the shell body can be rotatably mounted through a bearing, and an internal thread sleeve is threadedly connected on the adjusting screw, and the internal thread sleeve is hinged to an upper hinge point adjacent to the scissor-fork mechanism.

[0018] Preferably, the opening and closing structure comprises:

[0019] A slide plate is provided between adjacent sampling tubes, the slide plate is slidably connected to the top of the shell, and each of the slide plates is slidably connected to a set of two upper and lower hinge points of the scissor mechanism;

[0020] The guide roller installed on the slide is rotated, and the height of the guide roller is lower than the top height of the sampling tube;

[0021] A sealing belt, one end of which is fixedly connected to one end of the top of the shell, a winding roller is rotatably installed at the other end of the top of the shell, the other end of the sealing belt alternately passes through the top of the sampling tube, bypasses the guide roller and is then fixedly connected to the winding roller, a volute spring is connected between the winding roller and the top of the shell, and the force of the volute spring on the winding roller makes it have a tendency to rewind the sealing belt;

[0022] A telescopic rod C is vertically fixed on the side wall of the shell, a rack is fixed on the top of the telescopic rod C, and one end of the winding roller is provided with a gear that can mesh with the rack.

[0023] Preferably, the bottom surface of the detection chamber is spherical, and the detection assembly includes a water quality detection component fixed to the upper side of the bottom of the detection chamber, the detection head of the water quality detection component extends to the bottom of the detection chamber, the bottom of the detection chamber is connected to a drain pipe, and a solenoid valve is installed on the drain pipe.

[0024] Preferably, an annular shell is provided below the bottom of the installation cavity and below the push plate. A plurality of sewage cavities and clear water cavities with the same number are circumferentially arranged inside the annular shell. The sewage cavities and the clear water cavities are arranged adjacent to each other. A clear water adding pipe is connected to the top of each clear water cavity. The number of sewage cavities is the same as that of the sampling pipes and they are in one-to-one correspondence. The bottom end of the sampling pipe is communicated with the top of the corresponding sewage cavity through a hose. An outlet hole communicating with the detection cavity is opened at the bottom of each sewage cavity and each clear water cavity. A sealing plate is provided above the outlet hole for sealing the outlet hole. A support rod is fixed on the sealing plate. The diameter of the support rod is smaller than that of the outlet hole. The bottom end of the support rod extends into the detection cavity and is fixed with a second convex head. A second compression spring is sleeved on the rod section of the support rod between the bottom of the annular shell and the second convex head. A stepping motor is fixed at the center of the bottom of the annular shell. An installation rod is fixed on the output shaft of the stepping motor. A first convex head for upwardly pushing the second convex head is fixed at the end of the installation rod away from the stepping motor. The movement track of the first convex head passes through all the second convex heads.

[0025] Preferably, an adjustment bladder is provided in each sewage cavity. A communication pipe is connected to the adjustment bladder. The communication pipe is connected to a charging and discharging air pipe. The charging and discharging air pipe extends to the outside of the housing and is provided with a valve.

[0026] Preferably, a first air bag is provided in each clear water cavity. A piston cylinder is fixed above each clear water cavity at the top of the annular shell. A piston is provided in the piston cylinder. A piston rod is vertically fixed on the piston. The piston rod penetrates through the top of the piston cylinder and extends above it. The top wall of the clear water cavity is fixed with a second air bag communicating with the bottom of the piston cylinder.

[0027] The present invention also provides a use method of the above sewage detection device, including the following steps:

[0028] By adjusting the telescopic amounts of the telescopic rod A4 and the telescopic rod B, the top pipe orifices of the multiple sampling pipes are at the same depth or at different depths;

[0029] Open the top opening of the sampling pipe through the opening and closing structure to take a sample;

[0030] After sampling, perform detection through the detection component.

[0031] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0032] The sewage detection device provided by the present invention is provided with a housing, a sampling component and a detection component; the sampling component includes a plurality of sampling tubes, a first compression spring, a push plate, a telescopic rod A, a telescopic rod B and an opening and closing structure. When the telescopic amounts of the telescopic rod A and the telescopic rod B are the same, the push plate is kept horizontal to synchronously adjust the height positions of the top openings of all the sampling tubes, so that sampling can be carried out at the same depth. When the telescopic amounts of the telescopic rod A and the telescopic rod B are different, the push plate is inclined, so that the top openings of the plurality of sampling tubes are at different height positions, thereby sampling at different depths. By adjusting the telescopic amounts of the telescopic rod A and the telescopic rod B, the sampling depth can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 FIG. is a schematic structural diagram of a sewage detection device provided by the present invention.

[0034] Figure 2 FIG. is a schematic structural diagram of a sliding seat, a sliding plate and a guiding roller in a sewage detection device provided by the present invention.

[0035] Figure 3 is Figure 1 an enlarged view of part A in

[0036] Figure 4 is Figure 1 an enlarged view of part B in

[0037] Figure 5 FIG. is a schematic internal structure diagram of an annular shell in a sewage detection device provided by the present invention.

[0038] Figure 6 FIG. is a schematic internal structure diagram of a piston cylinder in a sewage detection device provided by the present invention.

[0039] NOTES ON REFERENCE NUMERALS: 1. Housing; 2. Push plate; 3. Telescopic rod C; 4. Telescopic rod A; 5. Winding roller; 6. Gear; 7. Volute spring; 8. Sealing belt; 9. Sliding seat; 10. Sampling tube; 11. Guiding roller; 12. Sliding plate; 13. Adjusting screw; 14. Internal thread sleeve; 15. Scissor mechanism; 16. First compression spring; 17. Hose; 18. Annular shell; 19. Clean water chamber; 20. Support rod; 21. Stepper motor; 22. Water quality detection component; 23. Drain pipe; 24. Mounting rod; 25. First convex head; 26. Second convex head; 27. Piston cylinder; 28. First airbag; 29. Second airbag; 30. Piston; 31. Tensile spring; 32. Sealing plate; 33. Second compression spring; 34. Sewage chamber; 35. Inflation and deflation pipe; 36. Connecting pipe; 37. Adjusting bladder. DETAILED DESCRIPTION OF THE INVENTION

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0042] An embodiment of the present invention provides a sewage detection device, as Figures 1 - 6 shown, comprising:

[0043] A housing 1, an installation cavity and a detection cavity are provided inside the housing 1, the installation cavity is located above the detection cavity, and the housing 1 can be lifted by manual or other equipment, and when sampling, it is lowered into the water;

[0044] A sampling assembly provided in the installation cavity;

[0045] A detection assembly provided in the detection cavity;

[0046] The sampling assembly includes:

[0047] A plurality of sampling tubes 10 arranged vertically at intervals, the top ends of the sampling tubes 10 are open and extend above the housing 1;

[0048] A first compression spring 16 sleeved on the sampling tube 10, and both ends of the first compression spring 16 are in contact with the top of the housing 1 and the bottom end of the sampling tube 10 respectively;

[0049] A push plate 2 provided on the lower sides of the plurality of sampling tubes 10, both ends of the push plate 2 are respectively connected with a telescopic rod A4 and a telescopic rod B, both ends of the telescopic rod A4 are respectively hinged to the top of the housing 1 and one end of the push plate 2, one end of the telescopic rod B is fixedly connected to the top of the housing 1, and the other end is hinged to the other end of the push plate 2;

[0050] An opening and closing structure for opening or closing the top opening of the sampling tube 10.

[0051] When sampling, when the telescopic amounts of the telescopic rod A4 and the telescopic rod B are the same, the push plate 2 is kept horizontal to synchronously adjust the height positions of the top openings of all the sampling tubes 10, enabling sampling at the same depth. When the telescopic amounts of the telescopic rod A4 and the telescopic rod B are different, the push plate 2 is inclined, enabling the top openings of multiple sampling tubes 10 to be at different height positions, so as to sample at different depths. By adjusting the telescopic amounts of the telescopic rod A4 and the telescopic rod B, the sampling depth can be adjusted.

[0052] Preferably, an adjusting mechanism is installed on the housing 1 for adjusting the distance between adjacent sampling tubes 10.

[0053] Furthermore, the adjusting mechanism includes:

[0054] A sliding seat 9 provided on the upper side of the housing 1 and sleeved on each sampling tube 10. The sliding seat 9 is slidably connected to the top of the housing 1. A chute for the sliding connection of the sliding seat 9 and a through groove for the movement of the sampling tube 10 are provided at the top of the housing 1.

[0055] A scissor mechanism 15 connected between all the sliding seats 9. Each middle hinge point of the scissor mechanism 15 is hinged to a sliding seat 9.

[0056] An adjusting screw rod 13 rotatably installed on the top of the housing 1, rotatably installed through a bearing. An internally threaded sleeve 14 is threadedly connected to the adjusting screw rod 13. The internally threaded sleeve 14 is hinged to the adjacent upper hinge point of the scissor mechanism 15.

[0057] By rotating the adjusting screw rod 13, the adjusting screw rod 13 drives the internally threaded sleeve 14 to move. The internally threaded sleeve 14 drives the scissor mechanism 15 to extend or contract. The scissor mechanism 15 drives the sampling tube 10 to move through the sliding seat 9, adjusting the distance between adjacent sampling tubes 10 to meet different sampling spacings.

[0058] In this embodiment, the opening and closing structure includes:

[0059] A sliding plate 12 provided between adjacent sampling tubes 10. The sliding plate 12 is slidably connected to the top of the housing 1. Each sliding plate 12 is slidably connected to a set of upper and lower two hinge points of the scissor mechanism 15. An activity groove for inserting and moving a hinge pin is provided on the sliding plate 12.

[0060] A guiding roller 11 rotatably installed on the sliding plate 12, rotatably installed through a bearing. The height of the guiding roller 11 is lower than the height of the top of the sampling tube 10.

[0061] A sealing belt 8, one end of the sealing belt 8 is fixedly connected to one end of the top of the housing 1, and a winding roller 5 is rotatably installed at the other end of the top of the housing 1. The other end of the sealing belt 8 alternately passes over the top end of the sampling pipe 10, bypasses the guiding roller 11 and then is fixedly connected to the winding roller 5. A scroll spring 7 is connected between the winding roller 5 and the top of the housing 1. The acting force of the scroll spring 7 on the winding roller 5 causes it to have a tendency to wind up the sealing belt 8, so as to tension the sealing belt 8. The sealing belt 8 can be made of rubber material;

[0062] A telescopic rod C3 vertically fixed on the side wall of the housing 1, which can be fixed by screws. A rack is fixed to the top end of the telescopic rod C3. One end of the winding roller 5 is provided with a gear 6 that can mesh with the rack;

[0063] When the device enters the sewage, the sealing belt 8 seals the top opening of the sampling pipe 10. Even if the position of the top end of the sampling pipe 10 is adjusted by the push plate 2 later, due to the acting force of the scroll spring 7 on the winding roller 5, it has a tendency to wind up the sealing belt 8, so as to tension the sealing belt 8 and keep the top opening of the sampling pipe 10 sealed. When sampling, the telescopic rod C3 extends, driving the rack to move upward and mesh with the gear 6. Thus, the gear 6 drives the winding roller 5 to rotate and unwind the sealing belt 8. The sealing belt 8 relaxes, leaving a gap with the top opening of the sampling pipe 10. Sewage enters the sampling pipe 10 from the top opening of the sampling pipe 10. By designing the opening and closing structure, the structure is simple and can simultaneously close or open the top openings of multiple sampling pipes 10.

[0064] In this embodiment, the bottom surface of the detection chamber is spherical. The detection assembly includes a water quality detection component 22 fixed on the upper side of the bottom of the detection chamber, which can be one or more detection devices in the prior art. The detection head of the water quality detection component 22 extends to the bottom of the detection chamber. A drain pipe 23 is connected to the bottom of the detection chamber, and a solenoid valve is installed on the drain pipe 23.

[0065] In a specific implementation, an annular shell 18 is provided below the bottom of the installation cavity and below the push plate 2. A plurality of sewage cavities 34 and clean water cavities 19 with the same number are circumferentially arranged inside the annular shell 18. The sewage cavities 34 and the clean water cavities 19 are arranged adjacent to each other. A clean water adding pipe is connected to the top of each clean water cavity 19. The number of the sewage cavities 34 is the same as that of the sampling pipes 10 and they are in one-to-one correspondence. The bottom end of each sampling pipe 10 is communicated with the top of the corresponding sewage cavity 34 through a hose 17. An outlet hole communicating with the detection cavity is opened at the bottom of each sewage cavity 34 and each clean water cavity 19. A sealing plate 32 is provided above the outlet hole for sealing the outlet hole. A support rod 20 is fixed on the sealing plate 32. The diameter of the support rod 20 is smaller than that of the outlet hole. The bottom end of the support rod 20 extends into the detection cavity and a second convex head 26 is fixed thereon. A second compression spring 33 is sleeved on the rod section of the support rod 20 between the bottom of the annular shell 18 and the second convex head 26. A stepping motor 21 is fixed at the center of the bottom of the annular shell 18. An installation rod 24 is fixed on the output shaft of the stepping motor 21. A first convex head 25 for upwardly pushing the second convex head 26 is fixed at one end of the installation rod 24 away from the stepping motor 21. The movement track of the first convex head 25 passes through all the second convex heads 26.

[0066] Start the rotation of the stepping motor 21. The stepping motor 21 drives the first convex head 25 to rotate through the installation rod 24. When the first convex head 25 moves below the second convex head 26 of a sewage cavity 34, it pushes the second convex head 26 upward. The second convex head 26 drives the sealing plate 32 to move upward through the support rod 20, opening the outlet hole. Then the water in the sewage cavity 34 flows into the detection cavity through the outlet hole and is detected by the water quality detection component 22. The sewage in multiple sewage cavities 34 can be detected respectively. After the sewage in a sewage cavity 34 is detected, the solenoid valve on the drain pipe 23 is opened to discharge the detected sewage. Then the stepping motor 21 drives the first convex head 25 through the installation rod 24 to move below the second convex head 26 of the adjacent clean water cavity 19, opening the outlet hole of the adjacent clean water cavity 19. The clean water flows into the detection cavity for internal cleaning and then is discharged from the drain pipe 23, reducing the interference between the sewage and facilitating the detection of the sewage in the next sewage cavity 34, improving the detection accuracy.

[0067] Further, an adjusting bladder 37 is provided in each sewage cavity 34. A communicating pipe 36 is connected to the adjusting bladder 37. The communicating pipe 36 is connected to a charging and discharging gas pipe 35. The charging and discharging gas pipe 35 extends to the outside of the housing 1 and is provided with a valve, which is convenient for charging and discharging gas to the adjusting bladder 37, thereby adjusting the volume of the sewage cavity 34 and the sampling amount.

[0068] Furthermore, a first airbag 28 is provided in each clear water chamber 19, and the first airbag 28 can be adhered to the side wall of the clear water chamber 19. Above each clear water chamber 19 at the top of the annular shell 18, a piston cylinder 27 of a piston 30 is fixed. A piston 30 is provided in the piston cylinder 27 of the piston 30. A piston rod of the piston 30 is vertically fixed on the piston 30. The piston rod of the piston 30 penetrates through the top of the piston cylinder 27 of the piston 30 and extends above it. The top wall of the clear water chamber 19 is fixed with a second airbag 29 communicated with the bottom of the piston cylinder 27 of the piston 30, and it can be fixedly adhered by glue.

[0069] After the sampling is completed, the telescopic rod A4 and the telescopic rod B extend to drive the push plate 2 to reset. The push plate 2 squeezes the piston rod of the piston 30 to drive the piston 30 to move downward. The air in the piston cylinder 27 of the piston 30 enters the second airbag 29, and the volume of the second airbag 29 becomes larger, so that the water pressure in the clear water chamber 19 becomes larger. After the detection of the sewage is completed, after the water outlet hole of the clear water chamber 19 is opened, the clear water sprays out from the water outlet hole, impacts the second convex head 26 and then scatters around, and the cleaning effect is better.

[0070] In summary, the present invention provides a sewage detection device, and its working principle is as follows: The device is placed in sewage for sampling. The telescopic amounts of the telescopic rod A4 and the telescopic rod B can be controlled to be the same, so that the push plate 2 remains horizontal and synchronously adjusts the height positions of the top openings of all the sampling tubes 10, enabling sampling at the same depth. The telescopic amounts of the telescopic rod A4 and the telescopic rod B can also be controlled to be different, so that the push plate 2 is inclined, enabling the top openings of multiple sampling tubes 10 to be at different height positions, thereby sampling at different depths. By adjusting the telescopic amounts of the telescopic rod A4 and the telescopic rod B, the sampling depth can be adjusted. When the telescopic rod C3 extends, it drives the rack to move upward and engage with the gear 6, and then the gear 6 drives the winding roller 5 to rotate and unwind the sealing tape 8. The sealing tape 8 is relaxed and has a gap with the top opening of the sampling tube 10, and sewage enters the sampling tube 10 from the top opening of the sampling tube 10. Clean water is added to the clean water chamber 19 through the clean water adding tube. After sampling is completed, the device is lifted out of the sewage surface. The telescopic rod A4 and the telescopic rod B extend to drive the push plate 2 to reset. The push plate 2 squeezes the piston rod 30 to drive the piston 30 to move downward. The air in the piston cylinder 27 enters the second airbag 29, and the volume of the second airbag 29 becomes larger, causing the water pressure in the clean water chamber 19 to increase. The stepping motor 21 is started to rotate. The stepping motor 21 drives the first convex head 25 to rotate through the mounting rod 24. The first convex head 25 moves below the second convex head 26 of a sewage chamber 34 and pushes the second convex head 26 upward. The second convex head 26 drives the sealing plate 32 to move upward through the support rod 20, opening the water outlet hole. Then, the water in the sewage chamber 34 flows into the detection chamber through the water outlet hole and is detected by the water quality detection component 22. The sewage in multiple sewage chambers 34 can be detected separately. After the sewage in a sewage chamber 34 is detected, the solenoid valve on the drain pipe 23 is opened to discharge the detected sewage. Then, the stepping motor 21 drives the first convex head 25 through the mounting rod 24 to move below the second convex head 26 of the adjacent clean water chamber 19, opening the water outlet hole of the adjacent clean water chamber 19. Clean water flows into the detection chamber, cleans the inside, and then is discharged from the drain pipe 23, reducing the interference between sewage and facilitating the detection of sewage in the next sewage chamber 34, improving the detection accuracy.

[0071] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add or delete the features in the embodiments of the present invention according to the circumstances or make other adjustments, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A sewage detection device, comprising: A housing, wherein a mounting cavity and a detection cavity are provided in the housing, and the mounting cavity is located above the detection cavity; A sampling assembly disposed in the mounting cavity; A detection component disposed in the detection cavity; It is characterized in that the sampling component comprises: A plurality of sampling tubes are vertically spaced apart, with the top ends of the sampling tubes being open and extending above the shell; A first compression spring is sleeved on the sampling tube, and two ends of the first compression spring are respectively in contact with the top of the shell and the bottom of the sampling tube; A push plate is arranged at the lower side of the multiple sampling tubes, and the two ends of the push plate are respectively connected with a telescopic rod A and a telescopic rod B, the two ends of the telescopic rod A are respectively hinged with the top of the shell and one end of the push plate, one end of the telescopic rod B is fixedly connected to the top of the shell, and the other end is hinged with the other end of the push plate; An opening and closing structure, used for opening or closing the top opening of the sampling tube; An adjusting mechanism is installed on the housing, and the adjusting mechanism includes: A sliding seat is arranged on the upper side of the shell and is sleeved on each sampling tube, and the sliding seat is slidably connected to the top of the shell; A scissor mechanism connected between all the slides, wherein each middle hinge point of the scissor mechanism is hinged to a slide; The opening and closing structure includes: A slide plate is arranged between adjacent sampling tubes, and each slide plate is slidably connected to a set of upper and lower hinge points of the scissor mechanism; The guide roller installed on the slide is rotated, and the height of the guide roller is lower than the top height of the sampling tube; A sealing belt, one end of which is fixedly connected to one end of the top of the shell, a winding roller is rotatably installed at the other end of the top of the shell, the other end of the sealing belt alternately passes through the top of the sampling tube, bypasses the guide roller and is then fixedly connected to the winding roller, a volute spring is connected between the winding roller and the top of the shell, and the force of the volute spring on the winding roller makes it have a tendency to rewind the sealing belt; A telescopic rod C is vertically fixed on the side wall of the shell, a rack is fixed on the top of the telescopic rod C, and a gear that can mesh with the rack is provided at one end of the winding roller.

2. The sewage detection device according to claim 1, characterized in that: The bottom surface of the detection chamber is spherical, and the detection assembly includes a water quality detection component fixed on the upper side of the bottom of the detection chamber. The detection head of the water quality detection component extends to the bottom of the detection chamber. The bottom of the detection chamber is connected to a drain pipe, and a solenoid valve is installed on the drain pipe.

3. The sewage detection device according to claim 2, characterized in that: The bottom of the installation cavity is located below the push plate and an annular shell is provided, wherein the annular shell has a plurality of sewage chambers and clean water chambers of the same number in an annular direction, the sewage chambers and the clean water chambers are adjacent to each other, the top of each clean water chamber is connected to a clean water adding tube, the sewage chambers are the same in number and correspond one to one to the sampling tubes, the bottom end of the sampling tube is connected to the top of the corresponding sewage chamber through a hose, and each sewage chamber and the bottom of the clean water chamber is provided with a water outlet connected to the detection cavity, a sealing plate is provided on the upper side of the water outlet hole for sealing the water outlet hole, a support rod is fixed on the sealing plate, the diameter of the support rod is smaller than the water outlet hole, the bottom end of the support rod extends into the detection cavity and is fixed with a second protrusion, a second compression spring is sleeved on the rod section of the support rod located between the bottom of the annular shell and the second protrusion, a stepping motor is fixed at the center of the bottom of the annular shell, a mounting rod is fixed on the output shaft of the stepping motor, and a first protrusion for pushing the second protrusion upward is fixed on the end of the mounting rod away from the stepping motor, and the movement trajectory of the first protrusion passes through all the second protrusions.

4. The sewage detection device according to claim 3, characterized in that: A regulating bag is arranged in each sewage cavity, and a connecting pipe is connected to the regulating bag. The connecting pipe is connected to the charging and discharging air pipe, and the charging and discharging air pipe extends to the outside of the shell and is provided with a valve.

5. The sewage detection device according to claim 4, characterized in that: A first airbag is provided in each clean water chamber, a piston cylinder is fixed on the top of the annular shell located above each clean water chamber, a piston is provided in the piston cylinder, a piston rod is vertically fixed on the piston, the piston rod passes through the top of the piston cylinder and extends above it, and a second airbag connected to the bottom of the piston cylinder is fixed on the top wall of the clean water chamber.

6. The method for using the sewage detection device according to any one of claims 1 to 5, characterized in that: The steps include: By adjusting the extension amount of the telescopic rod A and the telescopic rod B, the top ends of the multiple sampling tubes can be at the same depth or at different depths; Open the top opening of the sampling tube through the opening and closing structure to take samples; After sampling, the sample is tested by the detection component.

Images