Suspended matter concentration instrument based on incident light transmissivity

Abstract

The invention belongs to the technical field of water quality monitoring, and particularly relates to a suspended matter concentration instrument based on incident light transmissivity, the suspended matter concentration instrument comprises a light source adjusting mechanism, an air exhaust mechanism is arranged on one side of the light source adjusting mechanism, and sinking mechanisms are fixedly connected to the opposite surfaces of the two ends between the light source adjusting mechanism and the air exhaust mechanism respectively. According to the instrument, by arranging the air exhaust mechanism, the sinking mechanism and the propelling propeller, the LED lamp and the transmission light receiving device can be located at a certain depth below the water surface, so that the direct influence of stormy waves on the water surface is avoided, the stormy waves mainly influence the water surface, water flow is generally stable at the relatively deep position underwater, scattering and reflection changes of light are reduced, and the detection accuracy is improved. According to the method, the measurement accuracy can be improved, water quality information can be obtained from different directions through multi-angle measurement, the influence of local water flow or non-uniform suspended matter distribution on a single angle can be reduced by comprehensively analyzing measurement data of multiple angles, and the reliability of a measurement result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water quality monitoring, and in particular to a suspended matter concentration instrument based on incident light transmittance. Background Art

[0002] Suspended matter concentration is one of the important indicators to measure water quality.

[0003] Traditional suspended matter concentration measurement methods mainly include weight method and turbidity method, but these methods have problems such as cumbersome detection process, poor real-time performance, and interference with accuracy. In recent years, optical measurement methods have gradually gained attention due to their non-contact, fast and accurate characteristics. Among optical methods, the measurement method based on the transmittance of incident light is particularly simple and efficient. However, in practical applications, existing transmittance-based instruments still face challenges such as optical path stability and detection accuracy, especially when there are wind and waves on the water surface. Wind and waves will make the water surface uneven, increase the scattering and irregular reflection of light on the water surface, and wind and waves will stir the suspended matter in the water, making its distribution uneven. Due to the randomness of wind and waves, when measuring the same water area at different times, the results obtained may be quite different, which makes the measurement results difficult to repeat and reduces the reliability of the data.

[0004] Therefore, developing a new suspended matter concentration measuring instrument based on incident light transmittance has important practical significance and application value. Summary of the invention

[0005] Based on the existing technical problems of measuring the concentration of suspended matter in water, the present invention proposes a suspended matter concentration instrument based on incident light transmittance.

[0006] The present invention proposes a suspended matter concentration instrument based on incident light transmittance, comprising a light source adjustment mechanism, a vacuum mechanism is arranged on one side of the light source adjustment mechanism, and sinking mechanisms are fixedly connected to opposite surfaces at both ends of the light source adjustment mechanism and the vacuum mechanism, respectively. A guardrail is also fixedly connected in an array between the light source adjustment mechanism and the vacuum mechanism, and the guardrail is located on the outside of the sinking mechanism. A baffle is fixedly connected to the upper end of the light source adjustment mechanism and the vacuum mechanism, and a solar cell is embedded in the baffle. The lower surface of the baffle does not contact the upper end surface of the sinking mechanism, and the upper surface of the baffle is fixedly connected to a solar panel. One end of the light source adjustment mechanism and one end of the vacuum mechanism are fixedly connected to propulsion propellers, respectively, and the sinking mechanism includes a water inlet pipe.

[0007] The light source adjustment mechanism realizes the action of rotationally adjusting the light source.

[0008] The air extraction mechanism realizes the action of extracting the internal air of the sinking mechanism.

[0009] The sinking mechanism realizes the discharge and entry of liquid inside the sinking mechanism.

[0010] Preferably, the light source adjustment mechanism includes a first ring frame, a fixed plate adapted to the first ring frame is arranged on the inner side of the first ring frame, the fixed plate is a transparent polyimide film, a thermoelectric cooler is symmetrically arranged on one side of the fixed plate, the thermoelectric cooler is located inside the first ring frame, one end of the two sinking mechanisms are respectively fixedly connected to the inner walls at both ends of the first ring frame, a sliding rod is arranged inside the first ring frame, the two ends of the sliding rod are respectively fixedly connected to one end of the two sinking mechanisms, a rotating device is slidably connected to the surface of the sliding rod, and a cylinder is symmetrically fixedly connected to the inner bottom wall of the first ring frame.

[0011] Preferably, the rotating device includes a hanging frame slidably connected to the surface of the sliding rod, the inner wall of the hanging frame is fixedly connected to a motor, the output shaft of the motor is fixedly connected to a first bearing, the surface of the first bearing is meshed with a second bearing, the upper surface of the second bearing is fixedly connected to a rotating rod, the outer surface of the rotating rod is fixedly sleeved with a bearing, and the outer ring of the bearing is fixedly connected to the outer surface of the hanging frame.

[0012] Preferably, an LED lamp is fixedly connected to the surface of the rotating rod, a collimating lens is fixedly connected to one side of the LED lamp, one end of the collimating lens does not contact the surface of the fixed plate, and a fixed chuck is symmetrically fixedly connected to the bottom of the hanging frame, the two fixed chucks are fixedly connected back to back, and the piston rod of the cylinder is movably connected to the clamping hole of the fixed chuck.

[0013] Preferably, the air extraction mechanism includes a second ring frame, the outer surfaces of the two water inlet pipes are respectively fixedly connected to the inner wall of the second ring frame, a support plate matching it is provided on one side of the second ring frame, a piston tube is provided inside the second ring frame, the inner walls of one end of the two piston tubes are respectively fixedly connected to the inner wall of one end of the water inlet pipe, the two piston tubes are distributed bottom to top, the surfaces of the two piston tubes are respectively fixedly connected to the inner upper wall and inner bottom wall of the second ring frame, and a worm is fixedly connected to the outer side surface of the piston in each piston tube.

[0014] Preferably, a movable hole adapted to the worm is opened on one side of each of the piston tubes, a pneumatic turntable is fixedly connected to the inner side of the support plate, a turbine is rotatably connected to one side of the pneumatic turntable, the surfaces of the turbine are respectively meshed with the surfaces of the two worms, and a light receiving device is fixedly connected to the outer side of the support plate, and the light receiving device is semicircular.

[0015] Preferably, the transmitted light receiving device comprises a transmitted light receiver, a photoelectric converter, a signal processing system and a data output system. The transmitted light receiver is located on the opposite side of the LED lamp and is used to receive the transmitted light passing through the sample pool. The photoelectric converter converts the received transmitted light signal into an electrical signal. By detecting the change in the intensity of the transmitted light, the transmittance of the liquid can be calculated. The transmittance T is defined as: T = I t / I0, where I0 is the incident light intensity, I t is the transmitted light intensity.

[0016] Preferably, the signal processing system amplifies and filters the electrical signal output by the photoelectric converter to eliminate interference from ambient light and electrical noise. The processed signal is input into a microprocessor for analysis and calculation. Based on the relationship curve between transmittance and suspended matter concentration, the microprocessor can calculate the suspended matter concentration.

[0017] Preferably, the data output system includes a remote display screen and a data interface connected via 5G, the display screen displays the measurement results of the suspended matter concentration in real time and has a historical data query function, and the data interface is used to transmit the measurement data to a computer or other data storage device to facilitate further data analysis and storage.

[0018] Preferably, one side of the interior of the water inlet pipe is set as a water tank, the tube body of the water inlet pipe is provided with a water inlet, the inner wall of the water tank is slidably connected with a piston block, the piston block divides the water tank into two, and the surface of the piston block is coated with a sealing coating at the contact point with the inner wall of the water tank.

[0019] The beneficial effects of the present invention are:

[0020] By setting up an air extraction mechanism, a sinking mechanism and a propulsion propeller, the LED lamp and the transmitted light receiving device can be placed at a certain depth below the water surface, thereby avoiding the direct influence of wind and waves on the water surface. Wind and waves mainly affect the water surface, while at a relatively deep position underwater, the water flow is usually more stable, reducing the scattering and reflection changes of light, which helps to improve the measurement accuracy. In addition, multi-angle measurement can obtain water quality information from different directions. By comprehensively analyzing the measurement data from multiple angles, it can reduce the influence of local water flow or uneven distribution of suspended matter on a single angle, thereby improving the reliability of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a suspended matter concentration instrument based on incident light transmittance proposed by the present invention;

[0022] Figure 2 A three-dimensional diagram of a light source adjustment mechanism of a suspended matter concentration instrument based on incident light transmittance proposed by the present invention;

[0023] Figure 3 A three-dimensional diagram of an air extraction mechanism of a suspended matter concentration instrument based on incident light transmittance proposed by the present invention;

[0024] Figure 4 A three-dimensional diagram of a sinking mechanism of a suspended matter concentration instrument based on incident light transmittance proposed by the present invention;

[0025] Figure 5 The invention proposes a suspended matter concentration instrument based on incident light transmittance. Figure 4 The enlarged view of point A in the middle;

[0026] Figure 6 The invention proposes a suspended matter concentration instrument based on incident light transmittance. Figure 4 The enlarged view of point B in the middle;

[0027] Figure 7 A cross-sectional view of a sinking mechanism of a suspended matter concentration instrument based on incident light transmittance proposed by the present invention.

[0028] In the figure: 1. light source adjustment mechanism; 11. first ring frame; 12. fixing plate; 13. thermoelectric cooler; 14. sliding rod; 15. rotating device; 151. hanging frame; 152. motor; 153. first bearing; 154. second bearing; 155. rotating rod; 156. LED lamp; 157. collimating lens; 158. fixing chuck; 16. cylinder; 2. air extraction mechanism; 21. second ring frame; 22. piston tube; 23. turbine; 24. worm; 25. pneumatic turntable; 26. transmitted light receiving device; 3. sinking mechanism; 31. water inlet pipe; 32. water storage tank; 33. water inlet; 34. piston block; 4. guardrail; 5. baffle; 6. solar panel; 7. propulsion propeller. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figure 1-Figure 7A suspended matter concentration instrument based on incident light transmittance comprises a light source adjustment mechanism 1, an exhaust mechanism 2 is arranged on one side of the light source adjustment mechanism 1, sinking mechanisms 3 are fixedly connected to opposite surfaces at both ends of the light source adjustment mechanism 1 and the exhaust mechanism 2, and a guardrail 4 is fixedly connected in an array between the light source adjustment mechanism 1 and the exhaust mechanism 2, and the guardrail 4 is located on the outside of the sinking mechanism 3, a baffle 5 is fixedly connected to the upper end of the light source adjustment mechanism 1 and the exhaust mechanism 2, a solar cell is embedded in the baffle 5, the lower surface of the baffle 5 is not in contact with the upper end surface of the sinking mechanism 3, a solar panel 6 is fixedly connected to the upper surface of the baffle 5, one end of the light source adjustment mechanism 1 and one end of the exhaust mechanism 2 are fixedly connected to propulsion propellers 7, and the sinking mechanism 3 comprises a water inlet pipe 31.

[0031] In order to realize the rotation adjustment action of the light source by the light source adjustment mechanism 1, the light source adjustment mechanism 1 is provided to include a first ring frame 11, a fixing plate 12 adapted to the first ring frame 11 is provided on the inner side of the first ring frame 11, the fixing plate 12 is a transparent polyimide film, a thermoelectric cooler 13 is symmetrically provided on one side of the fixing plate 12, the thermoelectric cooler 13 is located inside the first ring frame 11, one end of the two sinking mechanisms 3 is respectively fixedly connected to the inner wall at both ends of the first ring frame 11, a sliding rod 14 is provided inside the first ring frame 11, the two ends of the sliding rod 14 are respectively fixedly connected to one end of the two sinking mechanisms 3, a rotating device 15 is slidably connected to the surface of the sliding rod 14, and a cylinder 16 is symmetrically fixedly connected to the inner bottom wall of the first ring frame 11;

[0032] Specifically, through the above structure, the rotating device 15 can slide on the sliding rod 14, and cooperate with the sinking mechanism 3 and the cylinder 16 to realize multi-directional rotation adjustment of the light source to meet the requirements of incident light sources at different angles. The thermoelectric cooler 13 symmetrically arranged on one side of the fixed plate 12 can control the temperature of the light source. The polyimide film has good transparency and does not affect the normal light emission of the light source. At the same time, the thermoelectric cooler 13 can dissipate heat in time when the light source is working or adjust the temperature as needed to ensure the stability and life of the light source and avoid adverse effects on the performance of the light source due to excessively high or low temperature.

[0033] The rotating device 15 includes a hanging frame 151 slidably connected to the surface of the sliding rod 14, a motor 152 is fixedly connected to the inner wall of the hanging frame 151, a first bearing 153 is fixedly connected to the output shaft of the motor 152, a second bearing 154 is meshed on the surface of the first bearing 153, a rotating rod 155 is fixedly connected to the upper surface of the second bearing 154, a bearing is fixedly sleeved on the outer surface of the rotating rod 155, the outer ring of the bearing is fixedly connected to the outer surface of the hanging frame 151, an LED lamp 156 is fixedly connected to the surface of the rotating rod 155, a collimating lens 157 is fixedly connected to one side of the LED lamp 156, one end of the collimating lens 157 does not contact the surface of the fixed plate 12, a fixed chuck 158 is symmetrically fixedly connected to the bottom of the hanging frame 151, the two fixed chucks 158 are fixedly connected back to back, and the piston rod of the cylinder 16 is movably plugged into the clamping hole of the fixed chuck 158;

[0034] Specifically, through the above structure, the hanging frame 151 can slide on the sliding rod 14, and the motor 152 drives the first bearing 153 to engage with the second bearing 154 to realize the rotation of the rotating rod 155, thereby driving the LED lamp 156 to perform precise angle adjustment. This design can meet the needs of high-precision adjustment of the illumination direction of the light source. The collimating lens 157 on one side of the LED lamp 156 can collimate the light emitted by the LED lamp, making the light more concentrated and parallel, thereby improving the intensity and uniformity of the lighting.

[0035] In order to realize the action of the air extraction mechanism 2 to extract the internal air of the sinking mechanism 3, the air extraction mechanism 2 is provided to include a second ring frame 21, the outer surfaces of the two water inlet pipes 31 are respectively fixedly connected to the inner wall of the second ring frame 21, a supporting plate adapted to the second ring frame 21 is provided on one side, a piston tube 22 is provided inside the second ring frame 21, the inner walls of one end of the two piston tubes 22 are respectively fixedly connected to the inner wall of one end of the water inlet pipe 31, the two piston tubes 22 are distributed up and down, and the surfaces of the two piston tubes 22 are respectively connected to the inner wall of the second ring frame 21. The inner upper wall and the inner bottom wall of the two ring frames 21 are fixedly connected, a worm 24 is fixedly connected to the outer side surface of the piston in each piston tube 22, and a movable hole adapted to the worm 24 is opened on one side of each piston tube 22. A pneumatic turntable 25 is fixedly connected to the inner side surface of the support plate, and a turbine 23 is rotatably connected to one side of the pneumatic turntable 25. The surfaces of the turbine 23 are respectively meshed with the surfaces of the two worms 24. A transmitted light receiving device 26 is fixedly connected to the outer side surface of the support plate, and the transmitted light receiving device 26 is semicircular.

[0036] Specifically, through the above structure, through the cooperation of the worm 24, the turbine 23 and the setting of the piston tube 22, the air inside the sinking mechanism 3 can be effectively extracted, and the semicircular transmitted light receiving device 26 fixedly connected to the outer side of the support plate can receive incident light sources emitted at different angles.

[0037] The transmitted light receiving device 26 includes a transmitted light receiver, a photoelectric converter, a signal processing system and a data output system. The transmitted light receiver is located on the opposite side of the LED lamp 156 and is used to receive the transmitted light passing through the sample pool. The photoelectric converter converts the received transmitted light signal into an electrical signal. By detecting the change in the intensity of the transmitted light, the transmittance of the liquid can be calculated. The transmittance T is defined as: T = I t / I0, where I0 is the incident light intensity, I t is the transmitted light intensity.

[0038] The signal processing system amplifies and filters the electrical signal output by the photoelectric converter to eliminate interference from ambient light and electrical noise. The processed signal is input into the microprocessor for analysis and calculation. Based on the relationship curve between transmittance and suspended matter concentration, the microprocessor can calculate the suspended matter concentration.

[0039] The data output system includes a remote display screen and a data interface connected via 5G. The display screen displays the measurement results of suspended matter concentration in real time and has a historical data query function. The data interface is used to transfer the measurement data to a computer or other data storage device for further data analysis and storage.

[0040] In order to realize the action of the sinking mechanism 3 to discharge and enter the liquid inside, a water tank 32 is set at one side of the water inlet pipe 31, and a water inlet 33 is opened on the pipe body of the water inlet pipe 31. A piston block 34 is slidably connected to the inner wall of the water tank 32. The piston block 34 divides the water tank 32 into two parts. The surface of the piston block 34 is coated with a sealing coating at the contact point with the inner wall of the water tank 32. The width of the piston block 34 is larger than the length of the water inlet 33.

[0041] Specifically, through the above structure, by setting a water storage tank 32 inside the water inlet pipe 31 and using the piston block 34 to separate it, the discharge and entry of the liquid can be accurately controlled, and the sliding of the piston block 34 can adjust the volume of the two parts of the water storage tank 32 as needed, thereby achieving precise regulation of the liquid flow rate, and then the entire detection instrument can be realized. Diving and floating in the water, reducing the impact of surface wind and waves on the data accuracy of suspended matter concentration detection in the water.

[0042] Reference Figure 1-Figure 7 , a method for using a suspended matter concentration instrument based on incident light transmittance, the operating steps are as follows:

[0043] Step 1: The staff puts the detection instrument into the water area to be detected, and drives the instrument to move to the designated water area through the remote control propeller 7. After arriving at the designated water area, the LED light 156 is turned on. When the transmitted light receiving device 26 receives the incident light, the received transmitted light signal is converted into an electrical signal through the photoelectric converter. The signal processing system amplifies and filters the electrical signal output by the photoelectric converter to eliminate the interference of ambient light and electrical noise. The processed signal is input into the microprocessor for analysis and calculation. According to the relationship curve between transmittance and suspended matter concentration, the microprocessor can calculate the suspended matter concentration, and transmit the processed data and the processing results to the remote control end through the data transmission system and display them on the display screen.

[0044] Step 2: The piston rod of one of the cylinders 16 is inserted into the clamping hole of a fixed chuck 158 opposite to it, and the fixed chuck 158 and the piston rod form a fixing effect. The cylinder 16 drives the hanging frame 151 fixedly connected to the fixed chuck 158 to slide on the surface of the slide bar 14, and at the same time, the motor 152 drives the first bearing 153 fixed at the end of the output shaft to rotate, and at the same time drives the second bearing 154 engaged with it to rotate, thereby driving the rotating rod 155 fixedly connected to the hanging frame 151 through the bearing to rotate, and the rotating rod 155 drives the LED lamp 156 to rotate to adjust the angle of the incident light;

[0045] Step 3: After the cylinder 16 completes the partial incident light angle adjustment action, the cylinder 16 moves the rotating device 15 to the initial position, the fixed chuck 158 is opened, and the piston rod of another cylinder 16 is plugged into the clamping hole of the fixed chuck 158 opposite thereto to form a fixing effect with the fixed chuck 158. Repeat step 2, and the measured data and the processed data are uploaded to the remote terminal via 5G. After the measurement is completed, the measuring instrument can be retrieved;

[0046] Step 4. If the waves on the water surface are large and have a great impact on the measured data, the air extraction mechanism 2 and the sinking mechanism 3 can be controlled to start working, and the pneumatic turntable 25 starts to rotate, driving the turbine 23 to rotate. The turbine 23 also drives the two worm gears 24 meshing with it to move. The two worm gears 24 respectively drive the pistons in the piston tube 22 fixed thereto to move, and the air pressure in the piston tube 22 decreases, and at the same time drives the air pressure in the empty water storage tank 32 on one side of the piston block 34 to decrease. The piston block 34 moves toward the low-pressure side, and the water inlet 33 slowly opens, and water enters the water storage tank 32. When the gas in the water storage tank 32 decreases, the entire measuring instrument slowly descends and sinks into the water until it reaches the specified depth. The pneumatic turntable 25 stops rotating. At this time, the water area at the depth is least affected by the wind and waves, and the interference with the measuring instrument is minimized. Execute steps 2 and 3.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A suspended matter concentration instrument based on incident light transmittance, characterized in that: The invention comprises a light source adjustment mechanism (1), a suction mechanism (2) is arranged on one side of the light source adjustment mechanism (1), a sinking mechanism (3) is fixedly connected to opposite surfaces at both ends of the light source adjustment mechanism (1) and the suction mechanism (2), a barrier (4) is fixedly connected in an array between the light source adjustment mechanism (1) and the suction mechanism (2), the barrier (4) is located on the outside of the sinking mechanism (3), a baffle (5) is fixedly connected to the upper ends of the light source adjustment mechanism (1) and the suction mechanism (2), a solar cell is embedded in the baffle (5), the lower surface of the baffle (5) is not in contact with the upper end surface of the sinking mechanism (3), a solar panel (6) is fixedly connected to the upper surface of the baffle (5), one end of the light source adjustment mechanism (1) and one end of the suction mechanism (2) are fixedly connected to propulsion propellers (7), and the sinking mechanism (3) comprises a water inlet pipe (31); The light source adjustment mechanism (1) realizes the action of rotationally adjusting the light source; The air extraction mechanism (2) realizes the action of extracting the internal air of the sinking mechanism (3); The sinking mechanism (3) realizes the discharge and entry of liquid inside the sinking mechanism (3).

2. The suspended matter concentration instrument based on incident light transmittance according to claim 1, characterized in that: The light source adjustment mechanism (1) comprises a first ring frame (11), a fixing plate (12) adapted to the first ring frame (11) is arranged on the inner side of the first ring frame (11), the fixing plate (12) is a transparent polyimide film, a thermoelectric cooler (13) is symmetrically arranged on one side of the fixing plate (12), the thermoelectric cooler (13) is located inside the first ring frame (11), one end of the two sinking mechanisms (3) are respectively fixedly connected to the inner walls at both ends of the first ring frame (11), a sliding rod (14) is arranged inside the first ring frame (11), the two ends of the sliding rod (14) are respectively fixedly connected to one end of the two sinking mechanisms (3), a rotating device (15) is slidably connected to the surface of the sliding rod (14), and a cylinder (16) is symmetrically fixedly connected to the inner bottom wall of the first ring frame (11).

3. The suspended matter concentration instrument based on incident light transmittance according to claim 2, characterized in that: The rotating device (15) comprises a hanging frame (151) slidably connected to the surface of the sliding rod (14); the inner wall of the hanging frame (151) is fixedly connected to a motor (152); the output shaft of the motor (152) is fixedly connected to a first bearing (153); the surface of the first bearing (153) is meshed with a second bearing (154); the upper surface of the second bearing (154) is fixedly connected to a rotating rod (155); the outer surface of the rotating rod (155) is fixedly sleeved with a bearing; the outer ring of the bearing is fixedly connected to the outer surface of the hanging frame (151).

4. The suspended matter concentration instrument based on incident light transmittance according to claim 3, characterized in that: An LED lamp (156) is fixedly connected to the surface of the rotating rod (155), a collimating lens (157) is fixedly connected to one side of the LED lamp (156), one end of the collimating lens (157) does not contact the surface of the fixed plate (12), a fixed chuck (158) is symmetrically fixedly connected to the bottom of the hanging frame (151), the two fixed chucks (158) are fixedly connected back to back, and the piston rod of the cylinder (16) is movably plugged into the clamping hole of the fixed chuck (158).

5. The suspended matter concentration instrument based on incident light transmittance according to claim 4, characterized in that: The air extraction mechanism (2) comprises a second ring frame (21), the outer surfaces of the two water inlet pipes (31) are respectively fixedly connected to the inner wall of the second ring frame (21), a supporting plate matched with the second ring frame (21) is provided on one side of the second ring frame (21), a piston tube (22) is provided inside the second ring frame (21), the inner walls of one end of the two piston tubes (22) are respectively fixedly connected to the inner wall of one end of the water inlet pipe (31), the two piston tubes (22) are distributed in a bottom-up manner, the surfaces of the two piston tubes (22) are respectively fixedly connected to the inner upper wall and the inner bottom wall of the second ring frame (21), and the outer side surface of the piston in each piston tube (22) is fixedly connected to a worm (24).

6. The suspended matter concentration instrument based on incident light transmittance according to claim 5, characterized in that: A movable hole adapted to the worm (24) is provided on one side of each piston tube (22); a pneumatic turntable (25) is fixedly connected to the inner side of the support plate; a turbine (23) is rotatably connected to one side of the pneumatic turntable (25); surfaces of the turbine (23) are respectively meshed with surfaces of the two worms (24); and a transmitted light receiving device (26) is fixedly connected to the outer side of the support plate; the transmitted light receiving device (26) is semicircular.

7. The suspended matter concentration instrument based on incident light transmittance according to claim 6, characterized in that: The transmitted light receiving device (26) comprises a transmitted light receiver, a photoelectric converter, a signal processing system and a data output system. The transmitted light receiver is located on the opposite side of the LED lamp (156) and is used to receive the transmitted light passing through the sample pool. The photoelectric converter converts the received transmitted light signal into an electrical signal. By detecting the change in the intensity of the transmitted light, the transmittance of the liquid can be calculated. The transmittance T is defined as: T=I t / I0, where I0 is the incident light intensity, I t is the transmitted light intensity.

8. The suspended matter concentration instrument based on incident light transmittance according to claim 7, characterized in that: The signal processing system amplifies and filters the electrical signal output by the photoelectric converter to eliminate interference from ambient light and electrical noise. The processed signal is input into the microprocessor for analysis and calculation. Based on the relationship curve between transmittance and suspended matter concentration, the microprocessor can calculate the suspended matter concentration.

9. The suspended matter concentration instrument based on incident light transmittance according to claim 8, characterized in that: The data output system includes a remote display screen and a data interface connected via 5G. The display screen displays the measurement results of the suspended matter concentration in real time and has a historical data query function. The data interface is used to transmit the measurement data to a computer or other data storage device for further data analysis and storage.

10. The suspended matter concentration instrument based on incident light transmittance according to claim 9, characterized in that: One side of the interior of the water inlet pipe (31) is provided with a water storage tank (32). The body of the water inlet pipe (31) is provided with a water inlet (33). The inner wall of the water storage tank (32) is slidably connected with a piston block (34). The piston block (34) divides the water storage tank (32) into two parts. The surface of the piston block (34) is coated with a sealing coating at the contact point with the inner wall of the water storage tank (32).

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