Water quality testing device

Abstract

The present invention discloses a water quality detection device, comprising: a vertical pipe, which is vertically arranged on a frame and can move in the vertical direction; a plurality of sampling mechanisms, which are arranged at intervals along the circumference of the vertical pipe, any sampling mechanism including a cylinder, which can move in the vertical direction and can also rotate along the circumference of the vertical pipe; a water inlet and a cover that can open and close the water inlet are provided at the bottom of any cylinder; a plurality of detection mechanisms, one detection mechanism corresponding to each sampling mechanism, any detection mechanism including a water collecting tank and a detection component, the water collecting tank is connected to the corresponding cylinder through a water inlet pipe, and the detection head of the detection component is located in the water collecting tank. The present invention can detect water quality at different depths and is convenient for accurately controlling the detection water depth; at the same time, the sampling area at the same water depth is larger, which can improve the accuracy of water quality detection; in addition, multiple points of detection can be performed at the same water depth at the same time, which is convenient for comparing the detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and more particularly to a water quality detection device. Background Art

[0002] In the existing technology, water quality testing devices usually use a downward water pump to extract water samples, which are then tested by a detector. When testing water quality at different depths, the water depth is not easy to accurately control, and the sampling area is small. In addition, it is not possible to perform multiple points of testing at the same water depth at the same time and quickly compare the results. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] Another object of the present invention is to provide a water quality detection device that can detect water quality at different depths and facilitates precise control of the detection water depth; at the same time, the sampling area at the same water depth is larger, which can improve the accuracy of water quality detection; in addition, multiple points of detection can be performed at the same water depth at the same time, which facilitates comparison of detection results.

[0005] In order to achieve these purposes and other advantages according to the present invention, there is provided a water quality detection device comprising:

[0006] frame;

[0007] A riser pipe is vertically arranged on the frame and is movable in a vertical direction;

[0008] Multiple sampling mechanisms are arranged at intervals along the circumference of the vertical pipe, each sampling mechanism includes a cylinder that can move in the vertical direction and rotate along the circumference of the vertical pipe; the bottom of each cylinder is provided with a water inlet and a cover that can open and close the water inlet;

[0009] There are multiple detection mechanisms, and one detection mechanism is corresponding to one sampling mechanism. Any detection mechanism includes a water collecting tank and a detection component. The water collecting tank is arranged on the frame and is connected to the corresponding cylinder through a water inlet pipe. The detection head of the detection component is located inside the water collecting tank.

[0010] Preferably, the side wall of the vertical pipe is provided with a plurality of long strip-shaped through holes extending in the vertical direction; the water quality detection device further comprises:

[0011] a first screw, which is coaxially rotatably disposed in the vertical tube;

[0012] a first slider, the thread of which is rotatably sleeved on the first screw;

[0013] A second slider is an annular structure coaxially sleeved on the standpipe, and a plurality of cylinders are evenly spaced along the circumference of the standpipe on the second slider;

[0014] A plurality of connecting plates are provided in each through hole, and two ends of any connecting plate are respectively connected to the first slider and the second slider.

[0015] Preferably, the system further comprises a first motor, which is disposed above the vertical pipe, and an output shaft of the first motor is connected to the upper end of the first screw.

[0016] Preferably, a rack is provided on the circumferential side wall of the second slider, and a plurality of serrations of the rack are evenly spaced along the circumference of the second slider; any sampling mechanism further comprises:

[0017] a pair of support plates, respectively located on the top and bottom surfaces of the second slider, one end of each support plate being rotatably connected to the second slider along the circumferential direction, and the other end being connected to the cylinder;

[0018] A rotating shaft, both ends of which are rotatably connected to a pair of support plates;

[0019] The gear is fixedly sleeved on the rotating shaft and meshes with the rack.

[0020] Preferably, any sampling mechanism further comprises:

[0021] A second screw is vertically disposed within the barrel, the upper end of the second screw being rotatably connected to the top of the barrel, and the lower end of the second screw extending outside the barrel through the water inlet and being rotatably connected to the barrel; the cover is threadably sleeved on the lower end of the second screw and is slidably connected to the barrel in a vertical direction;

[0022] The second motor is arranged above the cylinder, and the output shaft of the second motor is vertically arranged and connected to the upper end of the second screw; the output shaft of the second motor is connected to the rotating shaft through a belt drive.

[0023] Preferably, the bottom of any cylinder is a conical structure with the apex facing downward, and the water inlet is located at the apex of the bottom of the cylinder; the cover is a conical structure with the apex facing upward, and the diameter of the cover is larger than the diameter of the water inlet.

[0024] Preferably, it further includes a pair of slide grooves, which are annular structures symmetrically arranged on the top and bottom surfaces of the second sliding block, the center of any slide groove is located on the axis of the vertical pipe, and a slide groove is correspondingly arranged for each support plate, and one end of any support plate is slidably connected to the corresponding slide groove.

[0025] Preferably, a filter screen is horizontally connected inside any cylinder.

[0026] Preferably, it further comprises a box body, which is mounted on the frame, and a plurality of water collecting tanks are arranged in the box body; the bottom of any water collecting tank passes through the bottom of the box body and is provided with a water outlet valve.

[0027] Preferably, the number of the plurality of sampling mechanisms is three and they are evenly spaced apart along the circumference of the standpipe.

[0028] The present invention has at least the following beneficial effects:

[0029] First, the present invention includes a frame, a standpipe, multiple sampling mechanisms, and multiple detection mechanisms. One detection mechanism is provided for each sampling mechanism. The multiple sampling mechanisms are arranged circumferentially on the standpipe at intervals and are all movable in the vertical direction, enabling water quality testing at different depths and facilitating precise control of the test water depth. Furthermore, the multiple sampling mechanisms are all rotatable along the circumference of the standpipe, resulting in a larger sampling area at the same water depth, thereby improving the accuracy of the test results. Furthermore, multiple points of the same water depth can be tested simultaneously, facilitating comparison of the test results.

[0030] Second, the present invention also includes a first screw, a first slider, a second slider, multiple connecting plates, and a first motor, which can achieve synchronous adjustment of multiple sampling mechanisms in the vertical direction; at the same time, a rack is provided on the circumferential side wall of the second slider, and each sampling mechanism also includes a pair of support plates, a rotating shaft, a gear, a second screw, a second motor, and a belt. During the process of opening and closing the water inlet, the cylinder can be reciprocated within a certain angle to achieve sampling of a large area at the same water depth; the operation is simple and easy to control;

[0031] 3. The bottom of any cylinder of the present invention is a conical structure with the apex facing downward, and the water inlet is located at the apex of the bottom of the cylinder; the cover is a conical structure with the apex facing upward; in the process of opening and closing the water inlet of the cover, the gap between the cover and the water inlet changes continuously, which can promote water to enter the cylinder from the gap between the cover and the water inlet, which is beneficial to ensuring the detection efficiency; and after opening the water inlet, all the water that may remain in the cylinder can be discharged, which can effectively prevent it from affecting the next detection result.

[0032] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of the water quality detection device according to one of the technical solutions of the present invention;

[0034] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0035] Figure 3 A top view of the multiple sampling mechanisms according to one of the technical solutions of the present invention;

[0036] Explanation of the reference numerals: frame 1; vertical pipe 2; sampling mechanism 3; cylinder 4; cover 5; water collecting tank 6; water inlet pipe 7; detection head 8; through hole 9; first screw 10; first slider 11; second slider 12; connecting plate 13; first motor 14; rack 15; support plate 16; rotating shaft 17; gear 18; second screw 19; second motor 20; belt 21; chute 22; filter 23; box 24; water outlet valve 25; positioning cone 26; water pump 27; vertical plate 28; support rod 29; connecting rod 30; first motor box 31; second motor box 32. DETAILED DESCRIPTION

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0038] It should be noted that, in the description of the present invention, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] like Figures 1 to 3 As shown, the present invention provides a water quality detection device, comprising:

[0040] Rack 1;

[0041] A standpipe 2, which is vertically arranged on the frame 1 and can move in the vertical direction;

[0042] Multiple sampling mechanisms 3 are arranged at intervals along the circumference of the standpipe 2. Each sampling mechanism includes a cylinder 4 that can move in the vertical direction and rotate along the circumference of the standpipe 2. The bottom of each cylinder 4 is provided with a water inlet and a cover 5 that can open and close the water inlet.

[0043] Multiple detection mechanisms, one detection mechanism is correspondingly provided for each sampling mechanism 3, and any detection mechanism includes a water collecting tank 6 and a detection assembly. The water collecting tank 6 is provided on the frame 1 and is connected to the corresponding cylinder 4 through a water inlet pipe 7. The detection head 8 of the detection assembly is located inside the water collecting tank 6;

[0044] In the above technical scheme, the riser 2 is arranged on one side of the frame 1 and is slidably connected to the frame 1 in the vertical direction. The connection between the riser 2 and the frame 1 includes but is not limited to the following methods: a slide extending in the vertical direction is provided on the side wall of the riser 2, and one side of the frame 1 is slidably connected to the slide, so that the riser 2 can move in the vertical direction; a positioning cone 26 can be provided at the bottom of the riser 2, and the positioning cone 26 can be inserted into the silt at the bottom of the river or lake during detection, which is beneficial to improve the stability of the riser 2; a scale can be provided on the side wall of the riser 2 in the vertical direction for reading the water depth of the river or lake; a water pump 27 is provided on any water inlet pipe 7 for pumping water into the corresponding water collecting tank 6 through the cylinder 4; the water inlet pipe 7 is a hose and is of sufficient length so as not to restrict the movement of the corresponding sampling mechanism 3 in the vertical direction and the rotation along the circumference of the riser 2; the detection component can be provided on the outer wall of the water collecting tank 6, and the detection head 8 extends into the water collecting tank 6 and is sealed with the side wall of the water collecting tank 6;

[0045] When in use, the frame 1 can be fixed on the hull, and the hull can be driven into the area where water quality testing is required; the water inlet of the cylinder 4 of any sampling mechanism 3 is closed by the cover 5, and then the standpipe 2 is lowered in the vertical direction until the positioning cone 26 at the bottom of the standpipe 2 is inserted into the mud at the bottom of the river or lake; then the multiple sampling mechanisms 3 are all moved downward in the vertical direction until the cylinder 4 moves to the set depth, and the cover 5 is opened, and the water at the set depth in the river or lake can enter the cylinder 4 through the water inlet; the water pump 27 is started, and the water enters the cylinder 4 through the water inlet, and then The water enters the water collection tank 6 through the water inlet pipe 7; at the same time, the cylinders 4 of the multiple sampling mechanisms 3 are driven to rotate within a certain angle along the circumference of the standpipe 2, and any sampling mechanism 3 samples a larger area at the same water depth; after the water in the water collection tank 6 reaches a certain depth (the detection head 8 of the detection component is immersed in the water), the water pump 27 is turned off, and the detection component detects the water in the water collection tank 6 to obtain multi-point detection results; after the water in the cylinder 4 and the water collection tank 6 is drained, the water quality of the water at another set depth can be tested according to the above steps;

[0046] The present invention includes a frame 1, a standpipe 2, multiple sampling mechanisms 3 and multiple detection mechanisms, and one detection mechanism is correspondingly provided for each sampling mechanism 3; the multiple sampling mechanisms 3 are arranged on the standpipe 2 at intervals along the circumference and can all be moved in the vertical direction, so as to be able to detect water quality at different depths and facilitate accurate control of the detection water depth; at the same time, the multiple sampling mechanisms 3 can all rotate along the circumference of the standpipe 2, and the sampling area at the same water depth is larger, which can improve the accuracy of the detection results; in addition, multiple points of detection can be performed at the same water depth at the same time, which facilitates comparison of the detection results.

[0047] In another technical solution, a plurality of long strip-shaped through holes 9 extending in the vertical direction are provided on the side wall of the vertical pipe 2; the water quality detection device further comprises:

[0048] A first screw 10 is coaxially rotatably disposed in the vertical tube 2;

[0049] A first slider 11 is threadedly sleeved on the first screw rod 10;

[0050] A second slider 12 is an annular structure coaxially sleeved on the standpipe 2, and a plurality of cylinders 4 are evenly spaced along the circumference of the standpipe 2 on the second slider 12;

[0051] A plurality of connecting plates 13, one connecting plate 13 is correspondingly provided in each through hole 9, and both ends of any connecting plate 13 are respectively connected to the first slider 11 and the second slider 12;

[0052] The upper and lower ends of the first screw rod 10 are rotatably connected to the top and bottom of the vertical pipe 2, respectively. The plurality of through holes 9 are preferably three and are evenly spaced along the circumference of the vertical pipe 2. Any connecting plate 13 can be slidably connected to the corresponding through hole 9 in the vertical direction, which is conducive to smoother movement of the first slider 11 and the second slider 12 in the vertical direction and a more stable structure.

[0053] The first screw 10 is driven to rotate. Under the action of the multiple through holes 9 and the multiple connecting plates 13, the rotation of the first screw 10 drives the first slider 11 and the second slider 12 to move in the vertical direction on the standpipe 2, thereby realizing synchronous adjustment of the multiple sampling mechanisms 3 in the vertical direction, thereby being able to detect water quality at different depths; the operation is more convenient.

[0054] In another technical solution, a first motor 14 is further included, which is arranged above the vertical pipe 2, and the output shaft of the first motor 14 is connected to the upper end of the first screw 10;

[0055] A first motor box can be set at the top of the vertical pipe 2. The first motor 14 is fixed in the first motor box, and the output shaft is parallel to the vertical direction. The upper end of the first screw 10 rotates through the top of the vertical pipe 2 and the bottom of the first motor box in sequence, and is connected to the output shaft of the first motor 14. The rotation of the first screw 10 is controlled by the first motor 14, which is simple to operate and easy to control. The first motor box can protect the first motor 14.

[0056] In another technical solution, a rack 15 is provided on the circumferential side wall of the second slider 12, and a plurality of serrations of the rack 15 are evenly spaced along the circumference of the second slider 12; any sampling mechanism 3 further includes:

[0057] a pair of support plates 16 , which are respectively located on the top and bottom surfaces of the second slider 12 , one end of each support plate 16 being rotatably connected to the second slider 12 circumferentially, and the other end being connected to the cylinder 4 ;

[0058] A rotating shaft 17, both ends of which are rotatably connected to a pair of support plates 16;

[0059] The gear 18 is fixedly mounted on the rotating shaft 17 and meshes with the rack 15 .

[0060] The driving shaft 17 rotates, causing the gear 18 to rotate. Under the meshing action of the gear 18 and the rack 15, and the cooperation of a pair of support plates 16, the rotation of the gear 18 can drive the cylinder 4 to rotate along the circumferential direction of the second slider 12, thereby realizing the circumferential rotation of the sampling mechanism 3 along the riser 2, thereby expanding the sampling area of ​​the sampling mechanism 3 at the same water depth.

[0061] In another technical solution, any sampling mechanism 3 further includes:

[0062] The second screw 19 is vertically arranged in the barrel 4. The upper end of the second screw 19 is rotatably connected to the top of the barrel 4, and the lower end extends to the outside of the barrel 4 through the water inlet and is rotatably connected to the barrel 4. The cover 5 is threadedly rotatably sleeved on the lower end of the second screw 19 and is slidably connected to the barrel 4 in the vertical direction.

[0063] A second motor 20 is provided above the barrel 4. The output shaft of the second motor 20 is vertically arranged and connected to the upper end of the second screw 19. The output shaft of the second motor 20 is connected to the rotating shaft 17 via a belt 21.

[0064] A pair of vertical plates 28 are arranged at intervals in the horizontal direction at the bottom of the cylinder 4. Any vertical plate 28 is set vertically, and the upper end is fixed to the bottom of the cylinder 4; a horizontal support rod 29 is provided between the pair of vertical plates 28, and the support rod 29 is located below the cover 5, and the two ends are respectively fixed to the pair of vertical plates 28. The lower end of the second screw 19 is rotatably connected to the support rod 29 to realize the rotational connection between the lower end of the second screw 19 and the cylinder 4; a horizontal connecting rod 30 is provided on both sides of the cover 5, and the end of the pair of connecting rods 30 that is close to the cover 5 is fixed, and the end that is far away is fixed. They are respectively connected to a pair of vertical plates 28 in a vertical sliding direction to realize the sliding connection between the cover body 5 and the cylinder body 4 in the vertical direction; a second motor box can be provided on the top of the cylinder body 4, and the second motor 20 is fixed in the second motor box, and the output shaft is parallel to the vertical direction. The upper end of the second screw 19 rotates through the top of the cylinder body 4 and the bottom of the second motor box in sequence, and is connected to the output shaft of the second motor 20; the second motor box is provided with a pair of openings for the belt 21 to pass through, and the size of the openings is adapted to the size of the belt 21; the second motor box can protect the second motor 20;

[0065] Start the second motor 20, drive the second screw 19 to rotate, and drive the cover body 5 to move in the vertical direction; when the cover body 5 moves upward to the limit in the vertical direction, the cover body 5 closes the water inlet; when the cover body 5 moves downward in the vertical direction, the cover body 5 opens the water inlet, and water can enter the cylinder body 4 from the gap between the cover body 5 and the water inlet; at the same time, under the transmission action of the belt 21, the rotation of the second screw 19 drives the rotating shaft 17 to rotate, and then drives the cylinder body 4 to rotate along the circumference of the second slider 12; in the process of opening and closing the water inlet, the cylinder body 4 can be made to reciprocate within a certain angle to achieve sampling in a larger area of ​​the same water depth.

[0066] In another technical solution, the bottom of any cylinder 4 is a conical structure with the vertex facing downward, and the water inlet is located at the vertex of the bottom of the cylinder 4; the cover 5 is a conical structure with the vertex facing upward, and the diameter of the cover 5 is larger than the diameter of the water inlet;

[0067] During the process of opening and closing the water inlet by the cover body 5, the gap between the cover body 5 and the water inlet is constantly changing, which can promote water to enter the cylinder body 4 from the gap between the cover body 5 and the water inlet, which is beneficial to ensuring the detection efficiency; and after the detection is completed, the multiple sampling mechanisms 3 can be moved in the vertical direction until the cylinder body 4 leaves the water surface, and the cover body 5 is moved to open the water inlet, so that all the water that may remain in the cylinder body 4 can be discharged, which can effectively prevent it from affecting the next detection result.

[0068] In another technical solution, a pair of chute 22 is further included, which are annular structures symmetrically arranged on the top and bottom surfaces of the second slider 12. The center of each chute 22 is located on the axis of the standpipe 2. Each support plate 16 is correspondingly provided with a chute 22, and one end of each support plate 16 is slidably connected to the corresponding chute 22.

[0069] The slide groove 22 is a T-shaped groove. A slider adapted to the T-shaped groove is provided at one end of any support rod 29. The slider is arranged in the corresponding slide groove 22, so that one end of a pair of support plates 16 is connected to the second slider 12 in a circumferential rotation. The structure is stable and the rotation is smooth.

[0070] In another technical solution, a filter screen 23 is horizontally connected inside any cylinder 4; the filter screen 23 filters the water entering the cylinder 4 to prevent large objects from clogging the water inlet pipe 7 when pumping water, which is beneficial to ensuring detection efficiency.

[0071] In another technical solution, a box body 24 is further included, which is mounted on the frame 1, and multiple water collecting tanks 6 are arranged in the box body 24; the bottom of any water collecting tank 6 passes through the bottom of the box body 24 and is provided with a water outlet valve 25;

[0072] The box 24 provides a platform for installing multiple water collection tanks 6; the bottom of the water collection tank 6 can be a conical structure with the vertex facing downward, and a water outlet is provided at the vertex, and the water outlet valve 25 is located on the water outlet; when pumping water, keep the water outlet valve 25 closed, and when the water collection tank 6 needs to be drained, open the water outlet valve 25; the water outlet valve 25 is a solenoid valve for easy control;

[0073] A display screen and a controller can be set on the box body 24, and the controller is connected to multiple detection mechanisms, multiple water pumps 27, the first motor 14, multiple second motors 20, multiple water outlet valves 25 and the display screen; the controller controls the opening and closing of any detection mechanism, any water pump 27, the first motor 14, any second motor 20 and any water outlet valve 25, and displays the detection results on the display screen; it is easy to control, and can quickly obtain multi-point detection results and compare them, which is conducive to improving detection efficiency.

[0074] In another technical solution, there are three sampling mechanisms 3, which are evenly spaced along the circumference of the vertical pipe 2; a more appropriate number of detection points at the same depth can simultaneously ensure the accuracy and efficiency of the detection results.

[0075] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A water quality detection device, characterized in that: include: frame; A riser pipe is vertically arranged on the frame and is movable in a vertical direction; Multiple sampling mechanisms are arranged at intervals along the circumference of the vertical pipe, each sampling mechanism includes a cylinder that can move in the vertical direction and rotate along the circumference of the vertical pipe; the bottom of each cylinder is provided with a water inlet and a cover that can open and close the water inlet; Multiple detection mechanisms, one detection mechanism is corresponding to one sampling mechanism, and any detection mechanism includes a water collecting tank and a detection assembly, the water collecting tank is arranged on the frame and is connected to the corresponding cylinder through a water inlet pipe, and the detection head of the detection assembly is located inside the water collecting tank; The side wall of the vertical pipe is provided with a plurality of long strip-shaped through holes extending in the vertical direction; the water quality detection device further comprises: a first screw, which is coaxially rotatably disposed in the vertical tube; a first slider, the thread of which is rotatably sleeved on the first screw; A second slider is an annular structure coaxially sleeved on the standpipe, and a plurality of cylinders are evenly spaced along the circumference of the standpipe on the second slider; A plurality of connecting plates, one connecting plate is correspondingly arranged in each through hole, and both ends of any connecting plate are respectively connected to the first slider and the second slider; A rack is provided on the circumferential side wall of the second slider, and a plurality of serrations of the rack are evenly spaced along the circumference of the second slider; any sampling mechanism further comprises: a pair of support plates, respectively located on the top and bottom surfaces of the second slider, one end of each support plate being rotatably connected to the second slider along the circumferential direction, and the other end being connected to the cylinder; A rotating shaft, both ends of which are rotatably connected to a pair of support plates; a gear fixedly sleeved on the rotating shaft and meshing with the rack; It also includes a pair of slide grooves, which are annular structures symmetrically arranged on the top and bottom surfaces of the second sliding block. The center of any slide groove is located on the axis of the vertical pipe. A slide groove is correspondingly arranged on a support plate, and one end of any support plate is slidably connected to the corresponding slide groove.

2. The water quality detection device according to claim 1, characterized in that: It also includes a first motor, which is arranged above the vertical pipe, and the output shaft of the first motor is connected to the upper end of the first screw.

3. The water quality detection device according to claim 1, characterized in that: Any sampling agency also includes: A second screw is vertically disposed within the barrel, the upper end of the second screw being rotatably connected to the top of the barrel, and the lower end of the second screw extending outside the barrel through the water inlet and being rotatably connected to the barrel; the cover is threadably sleeved on the lower end of the second screw and is slidably connected to the barrel in a vertical direction; The second motor is arranged above the cylinder, and the output shaft of the second motor is vertically arranged and connected to the upper end of the second screw; the output shaft of the second motor is connected to the rotating shaft through a belt drive.

4. The water quality detection device according to claim 3, characterized in that: The bottom of any cylinder is a conical structure with the vertex facing downward, and the water inlet is located at the vertex of the bottom of the cylinder; the cover is a conical structure with the vertex facing upward, and the diameter of the cover is larger than the diameter of the water inlet.

5. The water quality detection device according to claim 4, characterized in that: A filter screen is connected horizontally inside any cylinder.

6. The water quality detection device according to claim 1, characterized in that: It also includes a box body, which is mounted on the frame, and a plurality of water collecting tanks are arranged in the box body; the bottom of any water collecting tank passes through the bottom of the box body and is provided with a water outlet valve.

7. The water quality detection device according to claim 1, characterized in that: There are three sampling mechanisms, which are evenly spaced apart along the circumference of the standpipe.

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