A water quality transparency testing device and a testing method thereof

Abstract

The application provides a water quality transparency testing device and a testing method thereof. The device comprises a transparent testing box for containing water to be tested, a liquid inlet arranged on the testing box and used for feeding water into the testing box, a liquid outlet arranged on the testing box below the liquid inlet and used for discharging water, a sinking mechanism installed on the top of the testing box and used for vertically lowering a measuring tool into the water, two groups of monitoring parts arranged on the top of the testing box and the sinking mechanism and used for observing the state of the sinking mechanism, a limiting mechanism arranged on the testing box and connected with the sinking mechanism, and capable of synchronously pulling the metal measuring disc during the lowering of the metal measuring disc by the sinking mechanism, preventing the metal measuring disc from frequently shaking or turning over due to the surge of water flow, ensuring that the metal measuring disc is always in a horizontal state, and effectively avoiding interference with observation and affecting accuracy.

Description

Technical Field

[0001] This invention relates to the field of water quality testing technology, and more specifically, to a water transparency testing device and its testing method. Background Technology

[0002] The transparency standard for black and odorous water bodies refers to the transparency standards established during the treatment of black and odorous water bodies to determine whether the sewage has been effectively cleaned and purified. These standards require the detection and measurement of the sewage's transparency.

[0003] Water transparency is a crucial indicator of water clarity. Measuring and judging transparency directly reflects the purification level and treatment effectiveness of polluted water bodies, allowing for adjustments to treatment plans to achieve better results. Currently, transparency testing still relies on manual visual inspection using a Seidl disc. A Seidl disc is a round iron disc painted in alternating black and white stripes. A thin string is threaded through the center hole of the disc, with alternating black and white stripes marked at 10cm intervals. During measurement, the Seidl disc is immersed in the water, gradually increasing the depth until the black and white stripes are no longer clearly visible to the naked eye. The depth at which the Seidl disc sinks is taken as the water transparency assessment result. However, this method has significant drawbacks:

[0004] 1. The Seidon disk has a simple structure and is observed by the naked eye. The selection of the contrast threshold of its black and white grid image is subject to strong subjective influence. In particular, it is affected by the differences in the user's vision, which will result in different transparency results. The accuracy is low and there are certain limitations.

[0005] 2. The circular iron disc of the Seidon's disk is movable with the thin rope attached to it. When the circular iron disc sinks into the water, it will shake frequently or tip over due to the surging water flow, which will interfere with the observation and affect the accuracy. Summary of the Invention

[0006] The purpose of this invention is to provide a water transparency testing device and method to solve the above-mentioned problems.

[0007] To achieve the above objectives, the present invention provides a water transparency testing device, comprising: a transparent testing chamber for holding the water to be tested; an inlet disposed on the testing chamber for introducing water into the testing chamber; an outlet disposed on the testing chamber and located below the inlet for discharging water; a sinking mechanism mounted on the top of the testing chamber for vertically lowering a measuring instrument into the water; two sets of monitoring units mirror-displayed on the top of the testing chamber and the sinking mechanism for observing the status of the sinking mechanism; a limiting mechanism disposed on the testing chamber and connected to the sinking mechanism; and a filling simulation unit disposed on the testing chamber and located behind it.

[0008] The limiting mechanism is adapted to tighten and restrict the sinking mechanism so as to keep the sinking mechanism in a horizontal state.

[0009] Furthermore, the sinking mechanism includes two fixed bases installed on both sides of the top of the measuring box for mounting external objects, a winch installed on the two fixed bases for lifting and lowering, a nylon rope connected to the winch for marking the descent depth, a connecting assembly connected to the end of the nylon rope, a white solid metal measuring disc connected to the connecting assembly and used as a measuring tool, several trapezoidal shells welded to the periphery of the metal measuring disc, trapezoidal inner blocks respectively engaged in the trapezoidal shells, and several counterweight balls passing through the trapezoidal shells and connected to the trapezoidal inner blocks;

[0010] The counterweight ball is a solid lead ball.

[0011] Furthermore, the monitoring unit includes a rectangular through slot formed on the fixed base to provide installation space, an electric push rod installed on the top of the measuring box and located in the rectangular through slot, a telescopic support connected to the output end of the electric push rod for lateral translation, a receiving block installed at the end of the telescopic support, and a camera installed in the receiving block for capturing images of the metal measuring disk.

[0012] Furthermore, the monitoring unit also includes a connecting base installed at the bottom of the receiving block and away from the camera, a swing cylinder installed in the connecting base and used to provide swing force, a return plate connected to the output shaft of the swing cylinder, and a wiping cotton block installed on the return plate and in contact with the camera for wiping the camera.

[0013] Furthermore, the limiting mechanism includes a "mountain"-shaped notch formed on the wall of the measuring box and extending to its inner bottom surface, a slider movably installed in the "mountain"-shaped notch for vertical movement, a circular tray installed on the bottom surface of the metal measuring disk, and a connecting rod connecting the slider and the circular tray at both ends and for integrating the metal measuring disk with the slider.

[0014] Furthermore, the filling simulation unit includes a water storage tank located behind the test chamber for storing the water to be tested, a submersible pump installed on the bottom surface of the water storage tank for pumping water, a transfer box sealed on the outer wall of the test chamber, a plurality of flow ports arrayed on the test chamber for connecting the test chamber and the transfer box, a water supply pipe connected at both ends to the outlet of the submersible pump and passing through the transfer box, and an overflow pipe connecting at both ends to the test chamber and the water storage tank for realizing water circulation.

[0015] Furthermore, a water transparency testing device also includes a recessed groove formed on the top of the testing chamber, an infrared laser emitter installed in the recessed groove and aligned with the nylon rope, and pressure bands connected at both ends to the testing chamber for fixing the infrared laser emitter.

[0016] Furthermore, the monitoring unit also includes a baffle connected to the fixed base and located at the rectangular through slot for partially shielding the rectangular through slot, and a rubber sheet installed on the output end of the electric push rod and connected to the inner wall of the measuring box, the fixed base and the baffle.

[0017] Furthermore, the connecting assembly includes a connecting sleeve rod installed at the center of the metal measuring disc, a threaded post connected to the end of the nylon rope, and the threaded post being screwed into the connecting sleeve rod.

[0018] According to a second aspect of the present invention, a testing method for a water transparency testing device is provided:

[0019] S1: First, operate the winch to wind the nylon rope to the top of the test chamber. Then, take out the water from the test site and pour the water into the test chamber through the inlet. Then, fill the storage tank with the same amount of water and drive the submersible pump to pump the water in the storage tank to flow through the water pipe, transfer box and several flow outlets into the test chamber. Then, connect the camera and the mobile phone via Bluetooth.

[0020] S2: Connect the metal measuring disc to the nylon rope through the connecting component, and put several trapezoidal inner blocks with counterweight balls into the corresponding trapezoidal shells respectively, and put the slider into the "mountain" shaped notch;

[0021] S3: Operate the winch again to continue loosening the nylon rope and continuously lower the metal measuring disc into the water in the measuring tank. When the metal measuring disc descends to below the receiving block, push the camera outward with the electric push rod until the image of the metal measuring disc appears on the mobile phone. Then stop driving the electric push rod and continue to lower the metal measuring disc. Observe the metal measuring disc in real time through the mobile phone until the image of the metal measuring disc captured by the camera can no longer be seen on the mobile phone.

[0022] S4: Immediately stop the winch to keep the descent height of the nylon rope constant, then turn on the infrared laser emitter to shine infrared light on the nylon rope and record the scale value of the infrared light shining on the nylon rope.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. This water transparency testing device allows the water to be tested to be introduced from the side of the test tank through the inlet, thus avoiding the need to pour water directly from the top of the test tank and preventing water from splashing onto other electrically driven components, which could cause short circuits or malfunctions.

[0025] 2. This water transparency testing device can automatically sink the metal measuring plate into the water body to be tested through the sinking mechanism. At the same time, the metal measuring plate can exert its own weight to pull it down during the sinking process, thereby ensuring that the metal measuring plate remains vertical during the fall and thus preventing it from affecting the accuracy of reading the scale value and calculating the transparency.

[0026] 3. This water transparency testing device, through two sets of monitoring units, ensures that testers can clearly observe and monitor the sinking of the metal measuring disc in real time and continuously. This greatly reduces the influence of differences in the testers' vision on the final transparency results, thus enabling a better judgment on whether black and odorous rivers have been effectively cleaned and purified, significantly improving the accuracy of the test. Moreover, it is simple and convenient to operate, with low professional requirements. In addition, the monitoring unit has a self-cleaning function, which can automatically wipe and clean the camera lens, thus effectively preventing the accumulation of dust on the camera surface from being missed and thus avoiding affecting the clarity of the image captured by the metal measuring disc, ensuring the accuracy of the test.

[0027] 4. The water transparency testing device, through a limiting mechanism, can simultaneously pull and limit the metal measuring disc during the lowering of the sinking mechanism, preventing it from frequently shaking or tipping over due to the surge of water flow, ensuring that it always remains in a horizontal state, effectively avoiding interference with the observation and affecting the accuracy.

[0028] 5. This water transparency testing device can circulate the external water body to be tested into the test tank through the filling simulation section, so that the water body in the test tank is always in a flowing state during the test. This makes the environment of the metal measuring plate as similar as possible to the real river channel, thereby making the measurement results closer to reality and ensuring that the measurement results are more authoritative. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 A perspective view of the present invention is shown;

[0031] Figure 2 A partial perspective view of the invention from another angle is shown;

[0032] Figure 3 A partial top view of the invention is shown;

[0033] Figure 4 A partial front sectional view of the present invention is shown;

[0034] Figure 5 Another partial perspective view of the invention is shown;

[0035] Figure 6 A partial bottom-view perspective view of the present invention is shown;

[0036] Figure 7 The present invention is shown. Figure 1 Enlarged view of point A;

[0037] Figure 8 The present invention is shown. Figure 1 Enlarged view of point B;

[0038] Figure 9 The present invention is shown. Figure 2 Enlarged view of point C;

[0039] Figure 10 The present invention is shown. Figure 4 Enlarged view of point D.

[0040] In the figure, the same reference numerals represent the same structural element, wherein:

[0041] 1. Measuring chamber; 2. Liquid inlet; 3. Liquid outlet; 4. Sinking mechanism; 41. Fixed base; 42. Winch; 43. Nylon rope; 44. Connecting assembly; 441. Connecting sleeve; 442. Threaded column; 45. Metal measuring disc; 46. Trapezoidal housing; 47. Trapezoidal inner block; 48. Counterweight ball; 5. Monitoring unit; 51. Rectangular through slot; 52. Electric push rod; 53. Telescopic support column; 54. Receiving block; 55. Camera; 56. 57. Connecting base; 58. Swing cylinder; 59. Return plate; 50. Wiping cotton pad; 51. Baffle; 52. Rubber sheet; 6. Limiting mechanism; 61. "Mountain" shaped notch; 62. Slider; 63. Round tray; 64. Connecting rod; 7. Filling simulation section; 71. Water storage tank; 72. Submersible pump; 73. Transfer box; 74. Flow port; 75. Water supply pipe; 76. Overflow pipe; 8. Recessed groove; 9. Infrared laser emitter; 10. Pressure belt. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0043] Please see Figure 1 , Figure 1 A perspective view of the present invention is shown; please refer to [link / reference]. Figure 2 , Figure 2 A partial perspective view of the invention from another angle is shown; please refer to [link / reference]. Figure 3 , Figure 3 A partial top view of the invention is shown; please refer to [link / reference]. Figure 4 , Figure 4 A partial front sectional view of the invention is shown; please refer to... Figure 5 , Figure 5 Another partial perspective view of the invention is shown; please refer to Figure 6 , Figure 6 A partial bottom-view perspective view of the present invention is shown; please refer to... Figure 7 , Figure 7 The present invention is shown. Figure 1 Please refer to the enlarged view at point A; Figure 8 , Figure 8 The present invention is shown. Figure 1 Please refer to the enlarged view at point B; Figure 9 , Figure 9 The present invention is shown. Figure 2 Enlarged view at point C; please refer to [link / reference]. Figure 10 , Figure 10 The present invention is shown. Figure 4 Enlarged view of point D; as shown Figure 1-10As shown, a water transparency testing device includes: a transparent testing tank 1 for holding the water to be tested; an inlet 2 disposed on the testing tank 1 for introducing water into the testing tank 1; an outlet 3 disposed on the testing tank 1 and located below the inlet 2 for discharging water; a sinking mechanism 4 installed on the top of the testing tank 1 for vertically lowering a measuring instrument into the water; two sets of monitoring units 5 mirror-displayed on the top of the testing tank 1 and the sinking mechanism 4 for observing the state of the sinking mechanism 4; a limiting mechanism 6 disposed on the testing tank 1 and connected to the sinking mechanism 4; and a filling simulation unit 7 disposed on the testing tank 1 and located behind it.

[0044] The limiting mechanism 6 is adapted to tighten and restrict the sinking mechanism 4 so that the sinking mechanism 4 remains in a horizontal state. After the test, the water in the test tank 1 is discharged by opening the outlet 3. The water transparency testing device can allow the water to be tested to be introduced from the side of the test tank 1 through the inlet 2, thereby avoiding the need to directly pour water into the test tank 1 from the top, and thus preventing water from splashing onto other electrically driven components and causing short circuits or malfunctions. The sinking mechanism 4 can automatically sink the metal measuring plate 45 into the water to be tested. At the same time, the metal measuring plate 45 can exert its own weight to pull it down, thereby ensuring that the metal measuring plate 45 remains vertical during the fall, thus preventing it from affecting the accuracy of reading the scale value and calculating the transparency. The two sets of monitoring units 5 can ensure that the tester can clearly observe and monitor the sinking of the metal measuring plate 45 in real time and continuously, thereby greatly reducing the influence of the tester's visual difference on the final transparency result, and thus better judging whether the black and odorous river has been treated. Effective cleaning and purification greatly improve the accuracy of detection, and the operation is simple and convenient with low professional requirements. In addition, the monitoring unit 5 has a self-cleaning function, which can automatically wipe and clean the lens of the camera 55, thereby avoiding the accumulation of dust on the surface of the camera 55 and ensuring the clarity of the image captured by the metal measuring plate 45, thus ensuring the accuracy of detection. The limiting mechanism 6 can pull and restrict the metal measuring plate 45 simultaneously during the lowering of the sinking mechanism 4, preventing it from shaking frequently or tipping over due to the surge of water, ensuring that it always remains in a horizontal state, effectively avoiding interference with the observation and affecting the accuracy. The filling simulation unit 7 can make the external water to be tested circulate into the measuring tank 1, so that the water in the measuring tank 1 is always in a flowing state during the test, making the environment of the metal measuring plate 45 as similar as possible to the real river channel, thus making the measurement results closer to reality and ensuring that the measurement results are more authoritative.

[0045] Optionally, the sinking mechanism 4 includes two fixed bases 41 installed on both sides of the top of the measuring box 1 for mounting external objects, a winch 42 installed on the two fixed bases 41 for lifting and lowering, the winch 42 being a vertically mounted cable drum that can wind but not store rope under power drive, a nylon rope 43 connected to the winch 42 for marking the descent depth, the nylon rope 43 having graduations, the point where the nylon rope 43 connects to the connecting assembly 44 being the zero mark, the connecting assembly 44 connected to the end of the nylon rope 43, a white solid metal measuring disc 45 connected to the connecting assembly 44 and used as a measuring tool, several trapezoidal shells 46 welded to the periphery of the metal measuring disc 45, trapezoidal inner blocks 47 respectively engaged in the trapezoidal shells 46, and several counterweight balls 48 passing through the trapezoidal shells 46 and connected to the trapezoidal inner blocks 47;

[0046] The counterweight ball 48 is a solid lead ball. After the water in the measuring tank 1 is filled to a suitable height through the liquid inlet 2, the winch 42 is driven to release the nylon rope 43, thereby automatically and continuously lowering the metal measuring disk 45 to ensure that it sinks into the water for normal testing. During the lowering of the metal measuring disk 45, the weight of several lead counterweight balls 48 is used to pull the metal measuring disk 45 downward, thereby ensuring that it enters the water in a vertical posture and continues to sink, improving the accuracy of reading scale values ​​and calculating transparency. The trapezoidal inner block 47 is not fixedly connected to the trapezoidal shell 46, ensuring flexibility and convenient storage and maintenance.

[0047] Optionally, the monitoring unit 5 includes a rectangular through slot 51 formed on the fixed base 41 to provide installation space, an electric push rod 52 installed on the top of the measuring box 1 and located within the rectangular through slot 51, a telescopic support column 53 connected to the output end of the electric push rod 52 for lateral translation, a receiving block 54 installed at the end of the telescopic support column 53, and a camera 55 installed in the receiving block 54 for capturing images of the metal measuring plate 45. The camera 55 is connected to the tester's mobile phone via Bluetooth. The camera 55 can stably and clearly capture images, ensuring that the images observed by different testers are consistent, effectively eliminating the influence of subjective bias on test accuracy. The impact is that one set of monitoring units 5 is located opposite another set of monitoring units 5 in the same manner. Under normal circumstances, the electric push rod 52 is in the reset state and does not push the camera 55 outward to prevent the monitoring unit 5 from obstructing the lowering of the metal measuring plate 45 and ensuring that it sinks smoothly into the water body to be tested. When the metal measuring plate 45 reaches the position below the monitoring unit 5, the electric push rod 52 is driven to push the receiving block 54 and the camera 55 inside it outward through the telescopic support 53 until both cameras 55 overlap with the metal measuring plate 45 below, ensuring that the tester's mobile phone displays the images of the metal measuring plate 45 captured by the two cameras 55, and ensuring real-time and continuous monitoring of the sinking of the metal measuring plate 45.

[0048] Optionally, the monitoring unit 5 further includes a connecting base 56 installed at the bottom of the receiving block 54 and away from the camera 55, a swing cylinder 57 installed in the connecting base 56 and used to provide swing force, a swing plate 58 connected to the output shaft of the swing cylinder 57, and a wiping cotton block 59 installed on the swing plate 58 and in contact with the camera 55 for wiping the camera 55. Under normal conditions, the wiping cotton block 59 and the swing plate 58 are offset from the lens of the camera 55 and do not obstruct the camera 55. The swing cylinder 57 is periodically driven to drive the wiping cotton block 59 to swing back and forth close to the lens of the camera 55, thereby periodically wiping and cleaning the lens of the camera 55 to prevent the clarity of the image of the metal measuring disk 45 captured by the camera 55 from being affected, which would reduce the monitoring accuracy.

[0049] Optionally, the limiting mechanism 6 includes a "mountain"-shaped notch 61 formed on the wall of the measuring chamber 1 and extending to its inner bottom surface; a slider 62 movably installed in the "mountain"-shaped notch 61 for vertical movement; a circular tray 63 installed on the bottom surface of the metal measuring disk 45; and a connecting rod 64 connecting the slider 62 and the circular tray 63 at both ends and for integrating the metal measuring disk 45 with the slider 62. This ensures that the circular tray 63, connecting rod 64, and slider 62 move synchronously downwards with the sinking of the metal measuring disk 45. The slider 62 is restricted by the "mountain"-shaped notch 61 and can only move up and down, not left, right, forward, or backward. This pulls on the metal measuring disk 45, restricting its position and preventing the metal measuring disk 45 from frequently shaking or tipping over due to the surge of water. This ensures that it remains in a horizontal state, shielding it from water flow interference, facilitating observation and monitoring by testers, and improving accuracy.

[0050] Optionally, the filling simulation unit 7 includes a water storage tank 71 located behind the test chamber 1 for storing the water to be tested, a submersible pump 72 installed on the inner bottom surface of the water storage tank 71 for pumping water, a transfer box 73 sealed on the outer wall of the test chamber 1, and a plurality of flow ports 74 arrayed on the test chamber 1 for connecting the test chamber 1 and the transfer box 73, with both ends connected to the outlet of the submersible pump 72 and a water supply pipe 75 penetrating the transfer box 73, and both ends penetrating the test chamber 1. The test chamber 1 and the water storage tank 71 are connected by an overflow pipe 76 for water circulation. After driving the submersible pump 72, the water to be tested in the water storage tank 71 is pumped to the transfer box 73 through the water supply pipe 75. Finally, the water to be tested flows into the test chamber 1 through several flow ports 74. Then, the excess water flows back into the water storage tank 71 through the overflow pipe 76, forming a circulation. This makes the water in the test chamber 1 constantly flowing, thereby simulating the natural water flow environment, ensuring that the test results are closer to reality, and thus making the measurement results more accurate and authoritative.

[0051] Optionally, a water transparency testing device further includes a recessed groove 8 formed on the top of the testing chamber 1, an infrared laser emitter 9 installed in the recessed groove 8 and aligned with the nylon rope 43, and pressure bands 10 connected at both ends to the testing chamber 1 for fixing the infrared laser emitter 9. When the metal measuring disc 45 is just out of sight and the lowering stops, the infrared laser emitter 9 is turned on so that the emitted infrared laser beam irradiates the nylon rope 43. The transparency is obtained by reading the scale according to the position of the infrared laser emitter 9, preventing the tester from directly visually reading the scale value of the nylon rope 43 and causing deviation, thus ensuring accuracy.

[0052] Optionally, the monitoring unit 5 further includes a baffle 591 connected to the fixed base 41 and located at the rectangular through groove 51 for partially shielding the rectangular through groove 51, and a rubber sheet 592 installed on the output end of the electric push rod 52 and connected to the inner wall of the measuring box 1, the fixed base 41 and the baffle 591. This ensures that the rubber sheet 592 can be pulled as the electric push rod 52 operates. Under the combined action of the rubber sheet 592 and the baffle 591, the side of the rectangular through groove 51 facing the inside of the measuring box 1 is blocked, thereby preventing the electric push rod 52 from being exposed and preventing water from splashing onto the electric push rod 52, thus ensuring the stable and safe operation of the electric push rod 52.

[0053] Optionally, the connecting assembly 44 includes a connecting sleeve 441 installed in the center of the metal measuring disc 45, and a threaded post 442 connected to the end of the nylon rope 43. The threaded post 442 is screwed into the connecting sleeve 441 to ensure that the metal measuring disc 45 can be quickly disassembled and replaced according to the actual water body conditions.

[0054] Furthermore, in another embodiment of the invention, a testing method for a water transparency testing device is provided:

[0055] S1: First, operate the winch 42 to wind the nylon rope 43 to the top of the test chamber 1. Then, take out the water from the test site and pour the water into the test chamber 1 through the liquid inlet 2. Then, fill the water tank 71 with the same water and drive the submersible pump 72 to pump the water in the water tank 71 so that it flows through the water pipe 75, the transfer box 73 and several flow outlets 74 into the test chamber 1. Then, connect the camera 55 and the mobile phone via Bluetooth.

[0056] S2: Connect the metal measuring disc 45 to the nylon rope 43 via the connecting component 44, and place several trapezoidal inner blocks 47 with counterweight balls 48 into the corresponding trapezoidal shells 46 respectively, and place the slider 62 into the "mountain" shaped notch 61;

[0057] S3: Operate the winch 42 again to continue to loosen the nylon rope 43, and continue to lower the metal measuring disc 45 into the water in the measuring tank 1. When the metal measuring disc 45 descends to below the receiving block 54, push the camera 55 outward through the electric push rod 52 until the image of the metal measuring disc 45 appears on the mobile phone. Then stop driving the electric push rod 52 and continue to lower the metal measuring disc 45. Observe the metal measuring disc 45 in real time through the mobile phone until the image of the metal measuring disc 45 captured by the camera 55 can no longer be seen on the mobile phone.

[0058] S4: Immediately stop the winch 42 to keep the descent height of the nylon rope 43 constant, then turn on the infrared laser emitter 9 to illuminate the nylon rope 43 with infrared light, and read and record the scale value of the infrared light illuminating the nylon rope 43.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A water transparency testing device, characterized in that, include: A transparent measuring tank (1) for holding the water to be tested; an inlet (2) for introducing water into the measuring tank (1); an outlet (3) for draining water from the measuring tank (1) and located below the inlet (2); a sinking mechanism (4) for vertically lowering the measuring instrument into the water, mounted on the top of the measuring tank (1); two sets of monitoring units (5) mirrored on the top of the measuring tank (1) and the sinking mechanism (4) for observing the state of the sinking mechanism (4); a limiting mechanism (6) mounted on the measuring tank (1) and connected to the sinking mechanism (4); and a filling simulation unit (7) mounted on the measuring tank (1) and located behind it, wherein the limiting mechanism (6) is adapted to tighten and restrict the sinking mechanism (4) so ​​that the sinking mechanism (4) remains in a horizontal state. The sinking mechanism (4) includes two fixed bases (41) installed on the top sides of the measuring box (1) for mounting external objects, a winch (42) installed on the two fixed bases (41) for lifting and lowering, a nylon rope (43) connected to the winch (42) for marking the descent depth, a connecting assembly (44) connected to the end of the nylon rope (43), a white solid metal measuring disc (45) connected to the connecting assembly (44) and used as a measuring tool, several trapezoidal shells (46) welded to the periphery of the metal measuring disc (45), trapezoidal inner blocks (47) respectively engaged in the trapezoidal shells (46), and several counterweight balls (48) passing through the trapezoidal shells (46) and connected to the trapezoidal inner blocks (47). The counterweight ball (48) is a solid lead ball; The limiting mechanism (6) includes a "mountain"-shaped notch (61) formed on the wall of the measuring box (1) and extending to its inner bottom surface; a slider (62) movably installed in the "mountain"-shaped notch (61) for vertical movement; a circular tray (63) installed on the bottom surface of the metal measuring disk (45); and a connecting rod (64) connecting the slider (62) and the circular tray (63) at both ends and for connecting the metal measuring disk (45) and the slider (62) as a whole, ensuring that the circular tray (63) and the connecting rod (64) are in good condition. The slider (62) moves down synchronously with the sinking of the metal measuring plate (45). The slider (62) is restricted by the "mountain" shaped notch (61) and can only move up and down but cannot move left and right or back and forth. This pulls on the metal measuring plate (45) and restricts its position, thereby preventing the metal measuring plate (45) from shaking frequently or overturning due to the surge of water flow, and ensuring that it is always in a horizontal state. The limiting mechanism (6) can pull and restrict the metal measuring plate (45) synchronously during the sinking mechanism (4) lowering the metal measuring plate (45).

2. The water transparency testing device as described in claim 1, characterized in that, The monitoring unit (5) includes a rectangular through slot (51) opened on the fixed base (41) to provide installation space, an electric push rod (52) installed on the top of the measuring box (1) and located in the rectangular through slot (51), a telescopic support (53) connected to the output end of the electric push rod (52) and used for lateral translation, a receiving block (54) installed at the end of the telescopic support (53), and a camera (55) installed in the receiving block (54) and used to capture images of the metal measuring plate (45).

3. The water transparency testing device as described in claim 2, characterized in that, The monitoring unit (5) also includes a connecting base (56) installed at the bottom of the receiving block (54) and away from the camera (55), a swing cylinder (57) installed in the connecting base (56) and used to provide swing force, a swing plate (58) connected to the output shaft of the swing cylinder (57), and a wiping cotton block (59) installed on the swing plate (58) and in contact with the camera (55) for wiping the camera (55).

4. The water transparency testing device as described in claim 3, characterized in that, The filling simulation unit (7) includes a water storage tank (71) located behind the test chamber (1) for storing the water to be tested, a submersible pump (72) installed on the bottom surface of the water storage tank (71) for pumping water, a transfer box (73) sealed on the outer wall of the test chamber (1), a plurality of flow ports (74) arrayed on the test chamber (1) for connecting the test chamber (1) and the transfer box (73), a water supply pipe (75) connected at both ends to the outlet of the submersible pump (72) and passing through the transfer box (73), and an overflow pipe (76) passing through both ends of the test chamber (1) and the water storage tank (71) for realizing water circulation.

5. The water transparency testing device as described in claim 4, characterized in that, A water transparency testing device also includes a recessed groove (8) formed on the top of the test chamber (1), an infrared laser emitter (9) installed in the recessed groove (8) and aligned with the nylon rope (43), and pressure bands (10) connected at both ends to the test chamber (1) for fixing the infrared laser emitter (9).

6. The water transparency testing device as described in claim 5, characterized in that, The monitoring unit (5) also includes a baffle (591) connected to the fixed base (41) and located at the rectangular through slot (51) for partially shielding the rectangular through slot (51), and a rubber sheet (592) installed on the output end of the electric push rod (52) and connected to the inner wall of the measuring box (1), the fixed base (41) and the baffle (591).

7. The water transparency testing device as described in claim 6, characterized in that, The connecting assembly (44) includes a connecting sleeve (441) installed at the center of the metal measuring disc (45), a threaded post (442) connected to the end of the nylon rope (43), and the threaded post (442) screwed into the connecting sleeve (441).

8. A water transparency testing device as described in any one of claims 1-7, wherein the testing method is as follows: S1: First, operate the winch (42) to wind the nylon rope (43) to the top of the test chamber (1), then take out the water body from the test site and pour the water body into the test chamber (1) through the liquid inlet (2), then fill the water tank (71) with the same water body, and drive the submersible pump (72) to pump the water body in the water tank (71) so that it flows through the water pipe (75), the transfer box (73) and several flow ports (74) into the test chamber (1), and then connect the camera (55) and the mobile phone via Bluetooth; S2: Connect the metal measuring disc (45) to the nylon rope (43) through the connecting component (44), and put the trapezoidal inner blocks (47) with the counterweight ball (48) into the corresponding trapezoidal shell (46) respectively, and put the slider (62) into the "mountain" shaped notch (61); S3: Operate the winch (42) again to continue to loosen the nylon rope (43) and continuously lower the metal measuring disc (45) into the water in the measuring box (1). When the metal measuring disc (45) descends to below the receiving block (54), push the camera (55) outward through the electric push rod (52) until the image of the metal measuring disc (45) appears on the mobile phone. Then stop driving the electric push rod (52) and continue to lower the metal measuring disc (45). Observe the metal measuring disc (45) in real time through the mobile phone until the image of the metal measuring disc (45) captured by the camera (55) can no longer be seen on the mobile phone. S4: Immediately stop the winch (42) to keep the descent height of the nylon rope (43) constant, then turn on the infrared laser emitter (9) to irradiate the nylon rope (43) with infrared light, and read and record the scale value of the infrared light irradiation point on the nylon rope (43).

Images