A turbidity measurement system and method for clarifying layer of a coal preparation plant concentration tank

Abstract

The present invention discloses a turbidity measurement system and method for a clarified layer of a thickening tank in a coal preparation plant. The siphon is directly fixed by adjusting so that the liquid inlet of the siphon is placed in the clarified layer of the thickening tank, the outlet of the siphon is connected to a first pipeline, the outlet of the first pipeline is respectively connected to a second valve and a second pipeline, and the second valve is connected to a third pipeline; the second pipeline is connected to the inlet of a turbidity measurement component via a third valve; the second valve is lower than the liquid inlet of the siphon; a power source is connected to the third pipeline; a control unit is used to control the opening or closing of the first valve, the second valve and the power source, so that the power source provides siphon attraction for the siphon and then sucks the liquid of the clarified layer of the thickening tank into the turbidity measurement component by siphoning; the control unit is also used to obtain the turbidity value of the clarified layer sample detected by the turbidity measurement component. This solution can solve the problem of continuous, non-powered siphon stratified sampling of samples in the thickening tank, and can obtain more accurate clarified layer turbidity detection results.

Description

Technical Field

[0001] The present application belongs to the technical field of coal preparation plant equipment, and in particular relates to a system and method for measuring turbidity of a clarified layer in a concentration tank of a coal preparation plant. Background Art

[0002] The turbidity of the clarified liquid in the clarified layer of the thickening tank is an important process parameter in the thickening process of the coal preparation plant, which directly reflects the sedimentation effect of the coal slime. When the turbidity of the clarified liquid in the coal slime clarified layer is high, it is necessary to add reagents to the thickening tank to increase the sedimentation amount, thereby adjusting the sedimentation effect of the coal slime.

[0003] In actual production, workers mainly manually sample clarified liquid in the concentration tank, and then use a turbidity meter in the laboratory to measure the turbidity of the sample. This method has the problem of large human factors and inaccurate results. Summary of the invention

[0004] The present invention aims to provide a system and method for measuring the turbidity of the clarified layer in a concentration tank of a coal preparation plant, which can realize continuous, non-powered siphon stratified sampling of samples in the concentration tank and obtain more accurate turbidity detection results of the clarified layer, and solve the technical problem that the turbidity detection of the liquid in the clarified layer of the concentration tank of the existing coal preparation plant is affected by human factors, resulting in low accuracy of the results.

[0005] In view of the above technical problems, the present invention provides the following technical solutions:

[0006] In some embodiments of the present application, a turbidity measurement system for a clarification layer of a thickening tank in a coal preparation plant is provided, comprising at least one measurement module, wherein the measurement module comprises an adjustment bracket, a siphon and a turbidity measurement assembly; and further comprises a power source and a control unit, wherein:

[0007] The adjusting bracket is arranged at the edge of the concentration tank, and a fixing piece is installed on the adjusting bracket;

[0008] The siphon is arranged on the fixing member; the liquid inlet of the siphon is placed in the clarification layer of the concentration tank, the outlet of the siphon is connected to the first pipeline, the outlet of the first pipeline is respectively connected to the first valve and the second pipeline, and the first valve is connected to the third pipeline; the second pipeline is connected to the inlet of the turbidity measurement component through the second valve; wherein the level of the second valve is lower than the level of the liquid inlet of the siphon; the power source is connected to the third pipeline;

[0009] The control unit is used to control the opening or closing of the first valve, the second valve and the power source, so that the power source provides siphon force to the siphon tube and then sucks the clarified layer sample of the concentration tank into the turbidity measurement component by siphoning; the control unit is also used to obtain the turbidity value of the clarified layer sample detected by the turbidity measurement component.

[0010] In some embodiments of the present application, in the turbidity measurement system of the clarified layer of the thickening tank of a coal preparation plant, a transmission mechanism is provided in the adjusting bracket, and the fixing member is provided on the transmission mechanism and can move in the vertical direction under the drive of the transmission mechanism.

[0011] The turbidity measurement system of the clarification layer of the coal preparation plant concentration tank in some embodiments of the present application,

[0012] The transmission mechanism comprises a driving motor, a driving lead screw and a bearing support; the driving motor is arranged at the top of the adjusting bracket, the driving lead screw is arranged inside the adjusting bracket, and the bearing support is arranged at the bottom of the adjusting bracket; the first end of the driving lead screw is connected to the driving output end of the driving motor, and the second end of the driving lead screw passes through the bearing support; the driving lead screw rotates under the drive of the driving motor, driving the liquid inlet of the siphon tube to move in the vertical direction;

[0013] The fixing member comprises a fixing plate and a pipe clamp, wherein the fixing plate is arranged on the driving screw, the pipe clamp is arranged on the surface of the fixing plate, and the siphon tube is fixed by the pipe clamp.

[0014] In some embodiments of the present application, in the turbidity measurement system of the clarified layer of the coal preparation plant thickening tank, when there are multiple measuring components, the siphon liquid inlet of at least one measuring component is placed in the free sedimentation layer or the transition layer, and the siphon liquid inlets of different measuring components are placed at different heights.

[0015] In some embodiments of the present application, in the turbidity measurement system of the clarified layer of the thickening tank of a coal preparation plant, the liquid inlet of the siphon tube is provided with a horizontal tube, a through hole is provided on the tube wall of the horizontal tube, and the horizontal tube is in a horizontal direction in the clarified layer of the thickening tank.

[0016] In some embodiments of the present application, in the turbidity measurement system for the clarified layer of the thickening tank of a coal preparation plant, a check valve is provided between the power source and the third pipeline.

[0017] In some embodiments of the present application, the power source of the turbidity measurement system of the clarification layer of the coal preparation plant concentration tank includes:

[0018] A water tank for holding clean water;

[0019] A water pump, whose water inlet is connected to the water tank outlet and whose water outlet is provided with a control valve;

[0020] a water supply pipe, one end of which is connected to the control valve and the other end of which is connected to the check valve;

[0021] The control unit is also used to control the opening or closing of the water pump and the control valve.

[0022] In some embodiments of the present application, in the coal preparation plant concentration tank clarification layer turbidity measurement system, the measurement module further includes a third valve and a fourth valve:

[0023] The third valve is arranged between the outlet of the first pipeline and the first valve;

[0024] The fourth valve is arranged at the outlet of the turbidity measuring assembly, and a collecting tank is arranged at the outlet of the fourth valve;

[0025] The control unit is also used to control the opening or closing of the third valve.

[0026] In some embodiments of the present application, the turbidity measurement system of the clarified layer of the coal preparation plant concentration tank includes a light-proof shell, a clarified layer sampling pipeline, a camera, an analyzer and a light source:

[0027] The clear layer sampling pipeline receives the clear layer sample when the second valve is opened;

[0028] The light-proof shell is arranged outside the clear layer sampling pipeline, the shooting surface of the camera faces the clear layer sampling pipeline, and the light source is used to emit natural light;

[0029] The analyzer receives the captured image sent by the camera, obtains the turbidity value of the clear layer sample after analyzing the captured image, and sends the turbidity value of the clear layer sample to the control unit.

[0030] In some embodiments of the present application, a method for measuring turbidity of a clarified layer in a thickening tank of a coal preparation plant is provided, which is implemented by using the turbidity measuring system for a clarified layer in a thickening tank of a coal preparation plant described in any one of the above items. The method comprises:

[0031] In the initial state, the control unit controls the first valve, the second valve and the power source to be in a closed state; the siphon is placed inside the clarification layer of the concentration tank and the liquid inlet of the siphon is higher than the second valve;

[0032] In the standby state, the control unit controls the first valve and the second valve to switch to an open state, and controls the power source to remain in a closed state;

[0033] In the power source starting state, the control unit controls the first valve and the second valve to remain in an open state, and starts the power source at the same time, and the power source provides siphon attraction to the siphon tube;

[0034] In the siphon suction state, the control unit sequentially controls the second valve to switch to the closed state, the first valve to switch to the closed state, and the power source to switch to the closed state;

[0035] In the siphon working state, the control unit controls the second valve to open, and the sample of the clarified layer in the concentration tank is sucked into the turbidity measuring component due to the effect of siphon attraction;

[0036] In the measurement state, the control unit receives the turbidity value of the clear layer sample detected by the turbidity measurement component. The technical solution of the present invention has the following technical effects compared with the prior art:

[0037] The system and method for measuring turbidity of the clarified layer in the concentration tank of a coal preparation plant provided by the present invention suck the clarified layer sample in the concentration tank into the turbidity measurement component for measurement through siphon action, which is not affected by human factors and can obtain more accurate turbidity detection results. In addition, since the siphon attraction is automatically triggered and continuous, the sampling of the clarified layer medium is continuous, and the turbidity measurement process is also continuous. The entire measurement process is fully automated and intelligent, saving manpower and material costs, and has the advantages of high reliability and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the objects and advantages of the present invention, wherein:

[0039] Figure 1 This is a schematic diagram of the structure of a turbidity measurement system for a clarified layer in a thickening tank of a coal preparation plant according to an embodiment of the present application.

[0040] Figure 2 A control logic diagram of a turbidity measurement system for a clarification layer in a thickening tank of a coal preparation plant according to an embodiment of the present application;

[0041] Figure 3 This is a schematic cross-sectional view of a concentration tank according to an embodiment of the present application;

[0042] Figure 4 This is a schematic diagram of the structure of the adjustment bracket according to one embodiment of the present application;

[0043] Figure 5 A control logic diagram of a turbidity measurement system for a clarification layer in a thickening tank of a coal preparation plant according to another embodiment of the present application;

[0044] Figure 6 This is a flow chart of a method for measuring turbidity in a clarified layer of a coal preparation plant thickening tank according to an embodiment of the present application;

[0045] Figure 7 This is a flow chart of the cleaning process control of the turbidity measurement system of the clarification layer of the thickening tank of a coal preparation plant according to one embodiment of the present application. DETAILED DESCRIPTION

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] In some embodiments of the present application, a system for measuring turbidity of a clarification layer in a concentration tank of a coal preparation plant is provided. Figure 1 and Figure 2 As shown, it includes at least one measuring module, which includes an adjusting bracket 1, a siphon 2 and a turbidity measuring assembly 13; and also includes a power source and a control unit 17. The adjusting bracket 1 is arranged at the edge of the concentration tank, and a fixing part is installed thereon; the siphon 2 is arranged on the fixing part; the liquid inlet of the siphon 2 is placed in the clarification layer of the concentration tank, the outlet of the siphon 2 is connected to the first pipeline, the outlet of the first pipeline is respectively connected to the first valve 5 and the second pipeline, and the first valve 5 is connected to the third pipeline; the second pipeline is connected to the inlet of the turbidity measuring assembly 13 through the second valve 7; wherein the level of the second valve is lower than the level of the liquid inlet of the siphon 2; the power source is connected to the third pipeline. The control unit 17 is used to control the opening or closing of the first valve 5, the second valve 7 and the power source, so that the power source provides siphon force to the siphon tube 2 and then sucks the clarified layer sample of the concentration tank into the turbidity measuring component 13 by siphoning; the control unit 17 is also used to obtain the turbidity value of the clarified layer sample detected by the turbidity measuring component 13.

[0049] In the above scheme, the power source can be set according to the actual situation. Its purpose is to provide siphon attraction for the siphon tube according to the siphon principle, so it can include something like a vacuum pump. The clarified liquid sample in the concentration tank is sucked into the turbidity measurement component for measurement through the siphon action, which is not affected by human factors and can obtain more accurate turbidity detection results. In addition, since the siphon attraction is automatically triggered and continuous, the sampling of the clarified layer medium is continuous, and the turbidity measurement process is also continuous. The entire measurement process is fully automated and intelligent, saving manpower and material costs, and has the advantages of high reliability and accuracy.

[0050] In some embodiments, the measuring component may be one or more. Figure 1 In the above description, three measuring components are used as an example. Preferably, the siphon inlets of different measuring components are placed at different heights in the clarification layer of the concentration tank. Figure 3 The figure shows a schematic diagram of the cross section of the concentration tank. It can be seen from the figure that when there are multiple siphon tube inlets in the system of the present application, one of them is located in the A layer (clarified layer) and is used to use the siphon effect to suck the clarified layer sample into the turbidity measurement component. The remaining siphon tubes can be immersed in other different layers. For example, when there are three siphon tubes in the figure, one of the siphon tube inlets is located in the B layer (free sedimentation layer), and one of the siphon inlets is located in the C layer (transition layer). Accordingly, the system of the present application can also perform turbidity detection on samples in the free sedimentation layer and the transition layer to obtain the turbidity values ​​of the corresponding samples. Figure 1 As shown, the system includes three adjustment brackets 1, three siphon tubes 2, and three flexible connecting pipes 3. The flexible connecting pipes 3 can be selected as bellows, which can adjust the changes in the pressure in the pipe. The three adjustment brackets 1 are fixed on the overflow edge of the concentration tank of the coal preparation plant; the siphon tube 2 is connected to the three adjustment brackets 1; the first valve 5 is installed on the pipeline external to the siphon tube 2; the clarification layer sampling pipeline 12 is connected to the siphon tube 2; and the turbidity measurement component 13 is installed at the clarification layer sampling pipeline 12. In actual measurement, the suction ports of the three siphon tubes 2 can be arranged from high to low and located at the critical position between the sedimentation layer and the clarification layer of the concentration tank. When the system is working, three siphon tubes 2 extract and sample the liquid in the sedimentation boundary layer in the concentration tank. After the siphon tubes 2 are drained, liquid samples of different depths flow continuously in the tubes and enter three different turbidity measurement components 13. The turbidity measurement components 13 can identify the turbidity value of the sample through intelligent recognition and send the test results to the control unit 17. The control unit 17 can be configured with a display screen to display the turbidity value of the clear layer sample. This solution obtains the turbidity of the sedimentation layer and the clear layer liquid critical layer at the corresponding height by setting the clear layer sample absorption position of the siphon tubes at different heights or the different layer positions of the concentration tank, and can further obtain the sedimentation layer height information.

[0051] In some embodiments of the present application, Figure 1 and Figure 3 As shown, a transmission mechanism is provided in the adjusting bracket 1, and the fixing part is provided on the transmission mechanism and can move in the vertical direction under the drive of the transmission mechanism. In this way, the height of the liquid inlet of the siphon tube can be adjusted. The transmission mechanism can be implemented by selecting existing screw adjustment, telescopic cylinder and other methods. In the present scheme, the transmission mechanism includes a driving motor 112, a driving screw 113 and a bearing support 117; the driving motor 112 is arranged on the top of the adjusting bracket, the driving screw 113 is arranged inside the adjusting bracket, and the bearing support 117 is arranged on the bottom plate 118 at the bottom of the adjusting bracket; the first end of the driving screw 113 is connected to the driving output end of the driving motor 112, and the second end of the driving screw 113 passes through the bearing support 117; the driving The lead screw 113 moves in the vertical direction under the drive of the drive motor 112. When the drive lead screw 113 moves downward, it can extend to the outside of the adjustment bracket 1; the fixing member includes a fixing plate 116 and a pipe clamp 115, the fixing plate 116 is arranged on the drive lead screw 113, the pipe clamp 115 is arranged on the surface of the fixing plate 116, and the siphon tube 2 is fixed by the pipe clamp 115. As shown in the figure, the pipe clamp 115 has a circular hole shape, and the siphon tube 2 can be fixed by passing through the circular hole. In this scheme, the drive motor 112 can be an automatic control type motor, and the control unit 17 can send a control instruction to the drive motor 112. In addition, it can also be adjusted manually, and the height of the fixing member can be manually adjusted by the manual wheel 111 set on the drive motor 112. In order to ensure the support strength of the adjustment bracket 1, its outer wall uses a steel section 114 as a frame. In this solution, the adjustment bracket 1 can be controlled by a servo electric push rod or by manual adjustment. By controlling the extension amount of the electric push rod (driving screw 113), the actual height of the suction clarified layer sample can be adjusted.

[0052] In some embodiments, Figure 1 As shown, the liquid inlet of the siphon tube 2 is provided with a transverse tube 21, a through hole is provided on the tube wall of the transverse tube 21, and the transverse tube 21 is in a horizontal direction in the clarification layer of the concentration tank. In this way, the inhaled liquid is a flat layer sample of the clarification layer, making the sample more representative.

[0053] Preferably, the power source includes a water tank 16 for containing clean water; a water pump 11, whose water inlet is connected to the outlet of the water tank 16, and whose water outlet is provided with a control valve 9; a water supply pipe 8, one end of which is connected to the control valve 9, and the other end of which is connected to the third pipeline through a check valve 6. The control unit 17 is also used to control the opening or closing of the water pump 11 and the control valve 9. This solution can not only provide siphon attraction for the siphon tube 2, but also control clean water to clean the pipeline. On this basis, the measurement module also includes a third valve 4 and a fourth valve 14, the third valve 4 is arranged between the outlet of the first pipeline and the first valve 5; the fourth valve 14 is arranged at the outlet of the turbidity measurement component 13, and a collection tank is arranged at the outlet 15 of the fourth valve 14; the control unit 17 is also used to control the opening or closing of the third valve 4, and the fourth valve 14 can be selected as a manually adjusted valve, which can be used to control the liquid flow.

[0054] In the above scheme, by controlling the adjustable first valve 5, second valve 7 and third valve 4 on the external pipeline after the siphon tube, the flow rate of the fluid in the pipeline can be adjusted, and by controlling the switching sequence of different valves, a siphon passage can be automatically formed to provide siphon attraction for the siphon tube. At the same time, because the fluid flowing in the siphon tube is a turbid liquid substance, long-term flow will have sediment on the inner wall of the pipeline. Therefore, this scheme can realize the automatic flushing function, and can introduce clean water into the siphon tube and each pipeline to achieve the purpose of cleaning the siphon pipeline. The automatic flushing function can be achieved by automatically flushing the water pipe by setting the time interval through the program in the control unit 17. The operator can also use the human-computer interaction interface 18 to input control instructions to realize the flushing function. Moreover, by setting a collection pool to collect the clarified layer samples discharged from the siphon pipeline, it can be returned to the concentration tank to achieve the recycling of the clarified layer samples.

[0055] In some embodiments, in combination Figure 4, the turbidity measurement component 13 may include a light-proof shell, a camera 131, an analyzer and a light source. The light-proof shell is arranged on the outside of the clear layer sampling pipeline 12, the shooting surface of the camera 131 faces the clear layer sampling pipeline 12, and the light source is used to emit natural light; the analyzer receives the shooting image sent by the camera 131, analyzes the shooting image to obtain the turbidity value of the clear layer sample and sends the turbidity value of the clear layer sample to the control unit 17. In this solution, when the siphon pipeline is in normal working state, the sampled clarified liquid sample flows through the clear layer sampling pipeline 12 uninterruptedly. The clear layer sampling pipeline 12 is preferably a transparent pipeline, and turbidity observation and measurement can be performed through the transparent pipeline. In addition, since the inner wall of the clear layer sampling pipeline 12 flows through turbid liquid for a long time, although an automatic cleaning function is set, dirt will still adhere to the inner wall. In order to make the test more accurate, this section of the pipeline is designed as a replaceable structure. The inspector can observe with naked eyes whether there is a sample flowing through the clear layer sampling pipeline 12 and the grayscale of the sample, and the camera 131 can measure the grayscale of the sample here. When the camera 131 is measuring, in order to reduce the interference of external ambient light, the test environment is set in a closed light-proof shell, and a light source as a fill light device is installed in the light-proof shell.

[0056] In the above scheme, if Figure 4 As shown, each valve, water pump, drive motor and water pump can be controlled by the control unit 17. The opening time of each valve is pre-set according to the working mode of providing siphon attraction, performing siphon operation, detecting turbidity value of clarified layer sample, and flushing pipeline at intervals.

[0057] In some embodiments of the present application, a method for measuring turbidity of a clarification layer in a thickening tank of a coal preparation plant is provided, which is implemented by using a turbidity measuring system for a clarification layer in a thickening tank of a coal preparation plant described in any of the above schemes, such as Figure 5 As shown, the method includes:

[0058] S101: In the initial state, the control unit 17 controls the first valve 5, the second valve 7 and the power source to be in the closed state; the siphon tube 2 is placed inside the clarification layer of the concentration tank and the liquid inlet of the siphon tube is higher than the second valve 7.

[0059] S102: in a preparatory state, the control unit 17 controls the first valve 5 and the second valve 7 to switch to an open state, and controls the power source to remain in a closed state;

[0060] S103: the power source is started, the control unit 17 controls the first valve 5 and the second valve 7 to remain in an open state, and starts the power source, which provides siphon attraction to the siphon tube;

[0061] S104: In the siphon suction state, the control unit 17 sequentially controls the second valve 7 to switch to the closed state, the first valve 5 to switch to the closed state, and the power source to switch to the closed state;

[0062] S105: Siphon working state, the control unit 17 controls the second valve 7 to open, and the sample of the clarified layer in the concentration tank is sucked into the turbidity measuring component 13 under the action of siphon attraction;

[0063] S106 : Measuring state, the control unit 17 receives the turbidity value of the clear layer sample detected by the turbidity measuring component 13 .

[0064] In the above scheme, if you use Figure 1 In the structure shown, the third valve can be kept open all the time. In steps S101, S102 and S104, the water pump 11 is turned off, and in step S103, the water pump 11 is turned on. In each step where the clarified layer sample or clean water needs to flow, the opening of the valve through which the liquid flows can be adjusted to ensure the stability of the liquid flow process.

[0065] Preferably, the above system can also be used to realize automatic cleaning function, the specific steps are as follows Figure 6 As shown:

[0066] S201: Initial state, the control unit 17 controls the first valve 5, the second valve 7, the third valve 4 and the water pump 11 to be in a closed state.

[0067] S202: Cleaning mode 1, the control unit 17 controls the first valve 5, the second valve 7, and the third valve 3 to be in an open state, and controls the water pump 11 to be in a started state.

[0068] S203: Cleaning mode 2, the control unit 17 controls the first valve 5 and the third valve 4 to be in an open state, controls the second valve 7 to be in a closed state, and controls the water pump 11 to be in a started state.

[0069] S204: Cleaning mode 3, the control unit 17 controls the first valve 5 and the second valve 7 to be in an open state, controls the third valve 4 to be in a closed state, and controls the water pump 11 to be in a started state.

[0070] S205: Entering the cleaning mode 1 again, the control unit 17 controls the first valve 5, the second valve 7 and the third valve 4 to be in the open state, controls the water pump 11 to be in the start state, and then returns to the initial state.

[0071] The above scheme of the present application solves the problem of difficult measurement of turbidity in the thickening tank of the coal preparation plant, and has the characteristics of simple structure, low failure rate, low cost, high reliability, easy maintenance, etc., which meets the actual production needs.

[0072] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A turbidity measurement system for the clarification layer of a coal preparation plant concentration tank, characterized in that: The method comprises at least one measuring module, wherein the measuring module comprises an adjusting bracket, a siphon and a turbidity measuring assembly; and further comprises a power source and a control unit, wherein: The adjusting bracket is arranged at the edge of the concentration tank, and a fixing piece is installed on the adjusting bracket; The siphon is arranged on the fixing member; the liquid inlet of the siphon is placed in the clarification layer of the concentration tank, the outlet of the siphon is connected to the first pipeline, the outlet of the first pipeline is respectively connected to the first valve and the second pipeline, and the first valve is connected to the third pipeline; the second pipeline is connected to the inlet of the turbidity measurement component through the second valve; wherein the level of the second valve is lower than the level of the liquid inlet of the siphon; the power source is connected to the third pipeline; The control unit is used to control the opening or closing of the first valve, the second valve and the power source, so that the power source provides siphon force to the siphon tube and then sucks the clarified layer sample of the concentration tank into the turbidity measurement component by siphoning; the control unit is also used to obtain the turbidity value of the clarified layer sample detected by the turbidity measurement component; A check valve is provided between the power source and the third pipeline; The power source comprises: A water tank for holding clean water; A water pump, whose water inlet is connected to the water tank outlet and whose water outlet is provided with a control valve; a water supply pipe, one end of which is connected to the control valve, and the other end of which is connected to the check valve; The control unit is also used to control the opening or closing of the water pump and the control valve; The measuring module further comprises a third valve and a fourth valve: The third valve is arranged between the outlet of the first pipeline and the first valve; The fourth valve is arranged at the outlet of the turbidity measuring assembly, and a collecting tank is arranged at the outlet of the fourth valve; The control unit is further used to control the opening or closing of the third valve; The control unit controls the water pump and the control valve at a set time interval to automatically clean the siphon pipeline; There are three measuring modules in total. One siphon tube of the other two measuring modules is placed in the free sedimentation layer, and the other siphon tube is placed in the transition layer. The liquid inlets of the siphon tubes of different measuring modules are placed at different heights.

2. The turbidity measurement system for the clarification layer of the coal preparation plant concentration tank according to claim 1 is characterized by: The adjusting bracket is provided with a transmission mechanism, the fixing member is provided on the transmission mechanism and can move in a vertical direction under the drive of the transmission mechanism.

3. The turbidity measurement system for the clarification layer of the coal preparation plant concentration tank according to claim 2 is characterized by: The transmission mechanism comprises a driving motor, a driving lead screw and a bearing support; the driving motor is arranged at the top of the adjusting bracket, the driving lead screw is arranged inside the adjusting bracket, and the bearing support is arranged at the bottom of the adjusting bracket; the first end of the driving lead screw is connected to the driving output end of the driving motor, and the second end of the driving lead screw passes through the bearing support; the driving lead screw rotates under the drive of the driving motor, driving the liquid inlet of the siphon tube to move in the vertical direction; The fixing member comprises a fixing plate and a pipe clamp, wherein the fixing plate is arranged on the driving screw, the pipe clamp is arranged on the surface of the fixing plate, and the siphon tube is fixed by the pipe clamp.

4. The turbidity measurement system for the clarification layer of the coal preparation plant concentration tank according to claim 3 is characterized by: The liquid inlet of the siphon tube is provided with a transverse tube, a through hole is provided on the tube wall of the transverse tube, and the transverse tube is in a horizontal direction in the clarification layer of the concentration tank.

5. The turbidity measurement system for the clarification layer of the coal preparation plant concentration tank according to claim 1 is characterized in that: The turbidity measurement assembly includes a light-tight housing, a clear layer sampling line, a camera, an analyzer, and a light source: The clear layer sampling pipeline receives the clear layer sample when the second valve is opened; The light-proof shell is arranged outside the clear layer sampling pipeline, the shooting surface of the camera faces the clear layer sampling pipeline, and the light source is used to emit natural light; The analyzer receives the captured image sent by the camera, obtains the turbidity value of the clear layer sample after analyzing the captured image, and sends the turbidity value of the clear layer sample to the control unit.

6. A method for measuring turbidity of a clarified layer in a coal preparation plant concentration tank, characterized in that: The method is implemented by using the turbidity measurement system of the clarification layer of the coal preparation plant concentration tank according to any one of claims 1 to 5, and the method comprises: In the initial state, the control unit controls the first valve, the second valve and the power source to be in a closed state; the siphon is placed inside the clarification layer of the concentration tank and the liquid inlet of the siphon is higher than the second valve; In the standby state, the control unit controls the first valve and the second valve to switch to an open state, and controls the power source to remain in a closed state; In the power source starting state, the control unit controls the first valve and the second valve to remain in an open state, and starts the power source at the same time, and the power source provides siphon attraction to the siphon tube; In the siphon suction state, the control unit sequentially controls the second valve to switch to the closed state, the first valve to switch to the closed state, and the power source to switch to the closed state; In the siphon working state, the control unit controls the second valve to open, and the sample of the clarified layer in the concentration tank is sucked into the turbidity measuring component due to the effect of siphon attraction; In the measurement state, the control unit receives the turbidity value of the clarified layer sample detected by the turbidity measuring component; Also includes cleaning implementation steps: In the initial cleaning state, the control unit controls the first valve, the second valve, the third valve and the water pump to be in a closed state; In cleaning mode 1, the control unit controls the first valve, the second valve, and the third valve to be in an open state, and controls the water pump to be in a start state; In cleaning mode 2, the control unit controls the first valve and the third valve to be in an open state, controls the second valve to be in a closed state, and controls the water pump to be in a started state; In cleaning mode three, the control unit controls the first valve and the second valve to be in an open state, controls the third valve to be in a closed state, and controls the water pump to be in a started state; Entering the cleaning mode 1 again, the control unit controls the first valve, the second valve and the third valve to be in the open state, controls the water pump to be in the start state, and then returns to the initial state.

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