An automatic sludge removal device for coal mine water tanks and its application

Abstract

An automatic sludge removal device for coal mine water sump includes a submersible sand pump I and a flushing pipe installed inside the water sump. The flushing pipe is connected to the inlet pipe via an electric valve. Flow meters are installed on both the outlet and inlet pipes. A controller is installed on the water tank. Vibrating screens I and II are arranged side-by-side. A pressure gauge is installed at the front end of a hydrocyclone, which is connected to the outlet pipe. In operation, the water sump is connected to the automatic sludge removal device. Sludge removal is performed without shutting down the water sump. The submersible sand pump II is activated. When the liquid level reaches the low threshold set by the controller, the submersible sand pump II shuts off. The slag processed by the hydrocyclone is then discharged from the device after being processed by vibrating screen II. Advantages of this invention: It replaces manual cleaning of sludge in the water sump, reducing labor intensity and improving the efficiency of sludge removal in coal mine water sumps; the sludge removal process is automatic and continuous, efficient and fast, with a user-friendly interface and easy operation; the entire device is explosion-proof, making it safe and reliable for use in coal mines.

Description

Technical Field

[0001] This invention relates to the field of coal mine water sump dredging, and in particular to an automatic coal mine water sump dredging device and its usage. Background Technology

[0002] Coal mine underground water reservoirs are typically located near the bottom of the mine shaft, near the bottom of the mining level, in the central area of ​​the mine, or near the central pump house. Some coal mines also have mining area water reservoirs. Water flowing from various mining areas and water used for equipment are diverted through roadway drainage ditches and ultimately collected in the central water reservoir. From there, high-power, high-pressure pumps in the central pump house pump the mine water to the surface, maintaining normal mine operation and ensuring safe mining operations.

[0003] The mine slurry produced during coal mining contains a large amount of impurities, mainly coal slurry and sand, which settle at the bottom of the sump, reducing its effective volume. If the silt is not cleaned in time, the sump will not only fail to buffer and store the slurry, but may also cause mine flooding accidents. Impurities in the gushing water can also enter the suction well of the main pump house, causing increased wear on the pump's flow-through components and accelerating pump damage. Excessive silt in the suction well can also clog the suction tap, making drainage difficult or impossible, seriously threatening mine safety. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems. Timely dredging of mine water tanks is an effective way to ensure mine drainage safety, extend pump life, and improve drainage system efficiency. This invention provides an automatic dredging device for coal mine water tanks and its usage.

[0005] This invention provides an automatic sludge removal device for coal mine water tanks, characterized in that: the automatic sludge removal device for coal mine water tanks includes a submersible sand pump I1, an electric valve I2, an electric valve II 3, an electric valve III 4, an inlet pipe I5, an inlet pipe II 6, a flow meter I 7, an outlet pipe 8, a flow meter II 9, a level sensor 10, a controller 11, a vibrating screen I12, a submersible sand pump II 13, a hydrocyclone inlet pipe 14, a pressure gauge 15, a vibrating screen II 16, a hydrocyclone 17, a device water tank 18, a flow meter III 19, a flushing pipe 20, and a water tank 21;

[0006] Among them: the submersible sand pump I1 and the flushing pipe 20 are installed in the water tank 21. The flushing pipe 20 is connected to the inlet pipe I5 and the inlet pipe II 6 through electric valve I2, electric valve II 3 and electric valve III 4. The flow meter I 7 and the flow meter III 19 are installed on the outlet pipe 8.

[0007] Flow meter II 9 is installed on inlet pipe I5, level sensor 10 is installed in water tank 18, controller 11 is installed on water tank 18, vibrating screen I12 and vibrating screen II 16 are arranged side by side and installed on water tank 18, submersible sand pump II 13 is connected to inlet pipe I5, hydrocyclone inlet pipe 14 is connected to hydrocyclone 17, pressure gauge 15 is installed at the front end of hydrocyclone 17, and hydrocyclone 17 is connected to outlet pipe 8.

[0008] The vibrating screen I12 includes a vibrating screen inlet 1201, a vibrating screen support 1202, two vibrating motors 1203, a screen fixing block 1204, a screen 1205, a slag outlet 1206, and a damping block 1207.

[0009] The inlet 1201 of the vibrating screen is installed on the vibrating screen bracket 1202 and is positioned above the screen 1205. The screen 1205 is fixed above the water tank 18 by the screen fixing block 1204. Two vibrating motors 1203 are positioned above the screen 1205. The slag outlet 1206 is positioned on the side below the screen 1205. The water tank 18 is positioned below the screen 1205. A damping block 1207 is provided between the screen 1205 and the water tank 18.

[0010] When the vibrating screen I12 is working, two vibrating motors 1203 rotate inwards. The material is filtered on the screen 1205. Material larger than the screen filtration particle size is discharged from the equipment through the slag outlet 1206 under the action of the vibrating motor 1203, while material smaller than the screen filtration particle size flows into the device water tank 18 after passing through the screen 1205.

[0011] The automatic sludge removal device for coal mine water tanks, in conjunction with submersible sand pump I1 and electric valves I2, II 3, and III 4, forms a suction and flushing action on the sludge in the water tank. Based on the head and flow parameters of the sand pump, the distance L of the flushing pipe 20 in the water tank 21 and the distance H between the flushing pipe 20 and the sludge 2101 in the water tank are arranged. Under the action of submersible sand pump I1, the sludge 2101 and water 2102 form a mud-water mixture, which is suspended in the water to form a circulating flow field.

[0012] A method of using an automatic sludge removal device for coal mine water tanks, characterized in that:

[0013] Work process

[0014] 1. Submersible sand pump I1 is placed inside water tank 21. Water inlet pipe I5, water inlet pipe II 6 and water inlet pipe I5 are arranged according to the spatial layout of water tank 21 and automatic sludge removal device to realize the connection between water tank and automatic sludge removal device, so that sludge removal operation can be carried out without water tank shutdown.

[0015] 2. Open electric valve I2, close electric valves II 3 and III 4, and start submersible sand pump I to carry out sludge disturbance operation in water tank 21.

[0016] 3. Close electric valve I2, open electric valves II 3 and III 4, and turn on submersible sand pump I to transport the material in the water tank to vibrating screens I12 and II 16 for screening. Flow meters I 7 and II 9 are used to monitor the flow rate of inlet pipes I5 and II 6.

[0017] IV. After being processed by vibrating screen I12 and vibrating screen II 1, materials smaller than the screen filter particle size flow into the device water tank 18, while materials larger than the screen filter particle size are directly discharged from the device through the slag outlet 1206.

[0018] 5. The liquid level sensor 10 is used to monitor the liquid level of the water tank 18 of the device. When the liquid level reaches the high threshold set by the controller 11, the submersible sand pump II 13 starts. When the liquid level reaches the low threshold set by the controller 11, the submersible sand pump II 13 shuts down.

[0019] VI. When the submersible sand pump II 13 is in the starting state, it transports the material to the hydrocyclone 17 through the hydrocyclone inlet pipe 14 for processing. The pressure gauge 15 is used to monitor the inlet pressure of the hydrocyclone 17. The processed material is returned to the water tank for direct recycling through the outlet pipe 8. The flow meter III 19 is used to monitor the flow rate of the outlet pipe 8. The slag processed by the hydrocyclone 17 is discharged from the device after being processed by the vibrating screen II 1.

[0020] VII. Submersible sand pump II 13 comes with valves and backwashing pipelines, used to impact the sediment in the mixing tank 18, facilitating tank cleaning;

[0021] 8. The automatic sludge removal device for coal mine water tanks achieves automated operation through controller 11, controlling the start and stop of submersible sand pump I1 and submersible sand pump II 13; controlling the opening and closing of electric valve I2, electric valve II 3, and electric valve III 4 and adjusting the valve opening degree; collecting data from flow meter I 7, flow meter II 9, liquid level sensor 10, and pressure gauge 15 and displaying it on the human-machine interface.

[0022] 9. In the human-machine interface of the controller 11, the sludge disturbance operation time inside the water tank, the device circulation operation time, the high and low thresholds of the water tank level and various flow alarm values ​​can be set according to the sludge dredging needs of the coal mine water tank. The dredging process flow can be compiled to realize one-click start and stop of the automatic dredging device. By real-time detection of flow rate, liquid level and other parameters, alarms can be set for abnormal fault status of the device.

[0023] Advantages of this invention:

[0024] The automatic sludge removal device and its usage for coal mine water tanks described in this invention replace manual cleaning of sludge in water tanks, reducing the labor intensity of workers; it achieves automatic online sludge removal without stopping production, improving the efficiency of sludge removal in coal mine water tanks; the sludge removal process is automatic and continuous, efficient and fast, with a user-friendly human-machine interface that is easy to operate; the system is modular and mobile, meeting the application needs of different sludge removal scenarios in mining areas, with low engineering investment costs; the control system can be remotely controlled, enabling unmanned or minimally manned construction modes, reducing labor intensity; the entire device is explosion-proof, ensuring safe and reliable application in the coal mining field. Attached Figure Description

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0026] Figure 1 A schematic diagram of an automatic sludge removal device for coal mine water tanks;

[0027] Figure 2 This is a schematic diagram of the vibrating screen structure;

[0028] Figure 3 This is a schematic diagram of silt disturbance. Detailed Implementation

[0029] Example 1

[0030] This invention provides an automatic sludge removal device for coal mine water tanks, characterized in that: the automatic sludge removal device for coal mine water tanks includes a submersible sand pump I1, an electric valve I2, an electric valve II 3, an electric valve III 4, an inlet pipe I5, an inlet pipe II 6, a flow meter I 7, an outlet pipe 8, a flow meter II 9, a level sensor 10, a controller 11, a vibrating screen I12, a submersible sand pump II 13, a hydrocyclone inlet pipe 14, a pressure gauge 15, a vibrating screen II 16, a hydrocyclone 17, a device water tank 18, a flow meter III 19, a flushing pipe 20, and a water tank 21;

[0031] Among them: the submersible sand pump I1 and the flushing pipe 20 are installed in the water tank 21. The flushing pipe 20 is connected to the inlet pipe I5 and the inlet pipe II 6 through electric valve I2, electric valve II 3 and electric valve III 4. The flow meter I 7 and the flow meter III 19 are installed on the outlet pipe 8.

[0032] Flow meter II 9 is installed on inlet pipe I5, level sensor 10 is installed in water tank 18, controller 11 is installed on water tank 18, vibrating screen I12 and vibrating screen II 16 are arranged side by side and installed on water tank 18, submersible sand pump II 13 is connected to inlet pipe I5, hydrocyclone inlet pipe 14 is connected to hydrocyclone 17, pressure gauge 15 is installed at the front end of hydrocyclone 17, and hydrocyclone 17 is connected to outlet pipe 8.

[0033] The vibrating screen I12 includes a vibrating screen inlet 1201, a vibrating screen support 1202, two vibrating motors 1203, a screen fixing block 1204, a screen 1205, a slag outlet 1206, and a damping block 1207.

[0034] The inlet 1201 of the vibrating screen is installed on the vibrating screen bracket 1202 and is positioned above the screen 1205. The screen 1205 is fixed above the water tank 18 by the screen fixing block 1204. Two vibrating motors 1203 are positioned above the screen 1205. The slag outlet 1206 is positioned on the side below the screen 1205. The water tank 18 is positioned below the screen 1205. A damping block 1207 is provided between the screen 1205 and the water tank 18.

[0035] When the vibrating screen I12 is working, two vibrating motors 1203 rotate inwards. The material is filtered on the screen 1205. Material larger than the screen filtration particle size is discharged from the equipment through the slag outlet 1206 under the action of the vibrating motor 1203, while material smaller than the screen filtration particle size flows into the device water tank 18 after passing through the screen 1205.

[0036] The automatic sludge removal device for coal mine water tanks, in conjunction with submersible sand pump I1 and electric valves I2, II 3, and III 4, forms a suction and flushing action on the sludge in the water tank. Based on the head and flow parameters of the sand pump, the distance L of the flushing pipe 20 in the water tank 21 and the distance H between the flushing pipe 20 and the sludge 2101 in the water tank are arranged. Under the action of submersible sand pump I1, the sludge 2101 and water 2102 form a mud-water mixture, which is suspended in the water to form a circulating flow field.

[0037] A method of using an automatic sludge removal device for coal mine water tanks, characterized in that:

[0038] Work process

[0039] 1. Submersible sand pump I1 is placed inside water tank 21. Water inlet pipe I5, water inlet pipe II 6 and water inlet pipe I5 are arranged according to the spatial layout of water tank 21 and automatic sludge removal device to realize the connection between water tank and automatic sludge removal device, so that sludge removal operation can be carried out without water tank shutdown.

[0040] 2. Open electric valve I2, close electric valves II 3 and III 4, and start submersible sand pump I to carry out sludge disturbance operation in water tank 21.

[0041] 3. Close electric valve I2, open electric valves II 3 and III 4, and turn on submersible sand pump I to transport the material in the water tank to vibrating screens I12 and II 16 for screening. Flow meters I 7 and II 9 are used to monitor the flow rate of inlet pipes I5 and II 6.

[0042] IV. After being processed by vibrating screen I12 and vibrating screen II 1, materials smaller than the screen filter particle size flow into the device water tank 18, while materials larger than the screen filter particle size are directly discharged from the device through the slag outlet 1206.

[0043] 5. The liquid level sensor 10 is used to monitor the liquid level of the water tank 18 of the device. When the liquid level reaches the high threshold set by the controller 11, the submersible sand pump II 13 starts. When the liquid level reaches the low threshold set by the controller 11, the submersible sand pump II 13 shuts down.

[0044] VI. When the submersible sand pump II 13 is in the starting state, it transports the material to the hydrocyclone 17 through the hydrocyclone inlet pipe 14 for processing. The pressure gauge 15 is used to monitor the inlet pressure of the hydrocyclone 17. The processed material is returned to the water tank for direct recycling through the outlet pipe 8. The flow meter III 19 is used to monitor the flow rate of the outlet pipe 8. The slag processed by the hydrocyclone 17 is discharged from the device after being processed by the vibrating screen II 1.

[0045] VII. Submersible sand pump II 13 comes with valves and backwashing pipelines, used to impact the sediment in the mixing tank 18, facilitating tank cleaning;

[0046] 8. The automatic sludge removal device for coal mine water tanks achieves automated operation through controller 11, controlling the start and stop of submersible sand pump I1 and submersible sand pump II 13; controlling the opening and closing of electric valve I2, electric valve II 3, and electric valve III 4 and adjusting the valve opening degree; collecting data from flow meter I 7, flow meter II 9, liquid level sensor 10, and pressure gauge 15 and displaying it on the human-machine interface.

[0047] 9. In the human-machine interface of the controller 11, the sludge disturbance operation time inside the water tank, the device circulation operation time, the high and low thresholds of the water tank level and various flow alarm values ​​can be set according to the sludge dredging needs of the coal mine water tank. The dredging process flow can be compiled to realize one-click start and stop of the automatic dredging device. By real-time detection of flow rate, liquid level and other parameters, alarms can be set for abnormal fault status of the device.

[0048] Example 2

[0049] This invention provides an automatic sludge removal device for coal mine water tanks, characterized in that: the automatic sludge removal device for coal mine water tanks includes a submersible sand pump I1, an electric valve I2, an electric valve II 3, an electric valve III 4, an inlet pipe I5, an inlet pipe II 6, a flow meter I 7, an outlet pipe 8, a flow meter II 9, a level sensor 10, a controller 11, a vibrating screen I12, a submersible sand pump II 13, a hydrocyclone inlet pipe 14, a pressure gauge 15, a vibrating screen II 16, a hydrocyclone 17, a device water tank 18, a flow meter III 19, a flushing pipe 20, and a water tank 21;

[0050] Among them: the submersible sand pump I1 and the flushing pipe 20 are installed in the water tank 21. The flushing pipe 20 is connected to the inlet pipe I5 and the inlet pipe II 6 through electric valve I2, electric valve II 3 and electric valve III 4. The flow meter I 7 and the flow meter III 19 are installed on the outlet pipe 8.

[0051] Flow meter II 9 is installed on inlet pipe I5, level sensor 10 is installed in water tank 18, controller 11 is installed on water tank 18, vibrating screen I12 and vibrating screen II 16 are arranged side by side and installed on water tank 18, submersible sand pump II 13 is connected to inlet pipe I5, hydrocyclone inlet pipe 14 is connected to hydrocyclone 17, pressure gauge 15 is installed at the front end of hydrocyclone 17, and hydrocyclone 17 is connected to outlet pipe 8.

[0052] The vibrating screen I12 includes a vibrating screen inlet 1201, a vibrating screen support 1202, two vibrating motors 1203, a screen fixing block 1204, a screen 1205, a slag outlet 1206, and a damping block 1207.

[0053] When the vibrating screen I12 is working, two vibrating motors 1203 rotate inwards. The material is filtered on the screen 1205. Material larger than the screen filtration particle size is discharged from the equipment through the slag outlet 1206 under the action of the vibrating motor 1203, while material smaller than the screen filtration particle size flows into the device water tank 18 after passing through the screen 1205.

[0054] The automatic sludge removal device for coal mine water tanks, in conjunction with submersible sand pump I1 and electric valves I2, II 3, and III 4, forms a suction and flushing action on the sludge in the water tank. Based on the head and flow parameters of the sand pump, the distance L of the flushing pipe 20 in the water tank 21 and the distance H between the flushing pipe 20 and the sludge 2101 in the water tank are arranged. Under the action of submersible sand pump I1, the sludge 2101 and water 2102 form a mud-water mixture, which is suspended in the water to form a circulating flow field.

[0055] A method of using an automatic sludge removal device for coal mine water tanks, characterized in that:

[0056] Work process

[0057] 1. Submersible sand pump I1 is placed inside water tank 21. Water inlet pipe I5, water inlet pipe II 6 and water inlet pipe I5 are arranged according to the spatial layout of water tank 21 and automatic sludge removal device to realize the connection between water tank and automatic sludge removal device, so that sludge removal operation can be carried out without water tank shutdown.

[0058] 2. Open electric valve I2, close electric valves II 3 and III 4, and start submersible sand pump I to carry out sludge disturbance operation in water tank 21.

[0059] 3. Close electric valve I2, open electric valves II 3 and III 4, and turn on submersible sand pump I to transport the material in the water tank to vibrating screens I12 and II 16 for screening. Flow meters I 7 and II 9 are used to monitor the flow rate of inlet pipes I5 and II 6.

[0060] IV. After being processed by vibrating screen I12 and vibrating screen II 1, materials smaller than the screen filter particle size flow into the device water tank 18, while materials larger than the screen filter particle size are directly discharged from the device through the slag outlet 1206.

[0061] 5. The liquid level sensor 10 is used to monitor the liquid level of the water tank 18 of the device. When the liquid level reaches the high threshold set by the controller 11, the submersible sand pump II 13 starts. When the liquid level reaches the low threshold set by the controller 11, the submersible sand pump II 13 shuts down.

[0062] VI. When the submersible sand pump II 13 is in the starting state, it transports the material to the hydrocyclone 17 through the hydrocyclone inlet pipe 14 for processing. The pressure gauge 15 is used to monitor the inlet pressure of the hydrocyclone 17. The processed material is returned to the water tank for direct recycling through the outlet pipe 8. The flow meter III 19 is used to monitor the flow rate of the outlet pipe 8. The slag processed by the hydrocyclone 17 is discharged from the device after being processed by the vibrating screen II 1.

[0063] VII. Submersible sand pump II 13 comes with valves and backwashing pipelines, used to impact the sediment in the mixing tank 18, facilitating tank cleaning;

[0064] 8. The automatic sludge removal device for coal mine water tanks achieves automated operation through controller 11, controlling the start and stop of submersible sand pump I1 and submersible sand pump II 13; controlling the opening and closing of electric valve I2, electric valve II 3, and electric valve III 4 and adjusting the valve opening degree; collecting data from flow meter I 7, flow meter II 9, liquid level sensor 10, and pressure gauge 15 and displaying it on the human-machine interface.

[0065] 9. In the human-machine interface of the controller 11, the sludge disturbance operation time inside the water tank, the device circulation operation time, the high and low thresholds of the water tank level and various flow alarm values ​​can be set according to the sludge dredging needs of the coal mine water tank. The dredging process flow can be compiled to realize one-click start and stop of the automatic dredging device. By real-time detection of flow rate, liquid level and other parameters, alarms can be set for abnormal fault status of the device.

[0066] Matters not covered in this invention are common knowledge.

[0067] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic sludge removal device for coal mine water tanks, characterized in that: The automatic sludge removal device for coal mine water tanks includes a submersible sand pump I (1), an electric valve I (2), an electric valve II (3), an electric valve III (4), an inlet pipe I (5), an inlet pipe II (6), a flow meter I (7), an outlet pipe (8), a flow meter II (9), a level sensor (10), a controller (11), a vibrating screen I (12), a submersible sand pump II (13), a hydrocyclone inlet pipe (14), a pressure gauge (15), a vibrating screen II (16), a hydrocyclone (17), a device water tank (18), a flow meter III (19), a flushing pipe (20), and a water tank (21). Among them: the submersible sand pump I (1) and the flushing pipe (20) are installed in the water tank (21). The flushing pipe (20) is connected to the inlet pipe I (5) and the inlet pipe II (6) through electric valve I (2), electric valve II (3) and electric valve III (4). The flow meter I (7) and the flow meter III (19) are installed on the outlet pipe (8). Flow meter II (9) is installed on inlet pipe I (5), level sensor (10) is installed in device tank (18), controller (11) is installed on tank (18), vibrating screen I (12) and vibrating screen II (16) are arranged side by side and installed on tank (18), submersible sand pump II (13) is connected to inlet pipe I (5), hydrocyclone inlet pipe (14) and hydrocyclone (17) are connected, pressure gauge (15) is installed at the front end of hydrocyclone (17), and hydrocyclone (17) is connected to outlet pipe (8).

2. The automatic sludge removal device for coal mine water tanks according to claim 1, characterized in that: The vibrating screen I (12) includes a vibrating screen inlet (1201), a vibrating screen support (1202), two vibrating motors (1203), a screen fixing block (1204), a screen (1205), a slag outlet (1206), and a damping block (1207); The inlet (1201) of the vibrating screen is installed on the vibrating screen support (1202) and is set above the screen (1205). The screen (1205) is fixed above the water tank (18) by the screen fixing block (1204). Two vibrating motors (1203) are set above the screen (1205). The slag outlet (1206) is set on the side below the screen (1205). The water tank (18) is set below the screen (1205). A damping block (1207) is set between the screen (1205) and the water tank (18).

3. The automatic sludge removal device for coal mine water sump according to claim 1, characterized in that: The automatic sludge removal device for coal mine water tanks, through the cooperation of submersible sand pump I (1) and electric valves I (2), II (3) and III (4), forms a suction and flushing effect on the sludge in the water tank. Combining the head and flow parameters of the sand pump, the distance L of the flushing pipe (20) in the water tank (21) and the distance H between the flushing pipe (20) and the sludge (2101) in the water tank are matched. Under the action of submersible sand pump I (1), the sludge (2101) and water (2102) form a mud-water mixture, which is suspended in the water to form a circulating flow field.

4. A method of using the automatic sludge removal device for coal mine water tanks as described in claim 1, characterized in that: Work process 1. Submersible sand pump I (1) is placed in water tank (21). According to the spatial layout of water tank (21) and automatic sludge removal device, water inlet pipe I (5), water inlet pipe II (6) and water inlet pipe I (5) are arranged to realize the connection between water tank and automatic sludge removal device, so that sludge removal operation can be carried out without water tank shutdown.

2. Open electric valve I (2), close electric valve II (3) and electric valve III (4), and turn on submersible sand pump I to carry out silt disturbance operation in water tank (21); 3. Close electric valve I (2), open electric valve II (3) and electric valve III (4), turn on submersible sand pump I, and transport the material in the water tank to vibrating screen I (12) and vibrating screen II (16) for screening. Flow meter I (7) and flow meter II (9) are used to monitor the flow of water inlet pipe I (5) and water inlet pipe II (6). IV. Vibrating screen I (12) and vibrating screen II 1 The material smaller than the screen filter particle size after treatment flows into the device water tank (18), and the material larger than the screen filter particle size is directly discharged from the device through the slag outlet 1206.

5. The liquid level sensor (10) is used to monitor the liquid level of the water tank (18) of the device. When the liquid level reaches the high threshold set by the controller (11), the submersible sand pump II (13) starts. When the liquid level reaches the low threshold set by the controller (11), the submersible sand pump II (13) shuts down. VI. When the submersible sand pump II (13) is in the starting state, the material is transported to the hydrocyclone (17) through the hydrocyclone inlet pipe (14) for processing. The pressure gauge (15) is used to monitor the inlet pressure of the hydrocyclone (17). The processed material is returned to the water tank for direct recycling through the outlet pipe (8). The flow meter III (19) is used to monitor the flow rate of the outlet pipe (8). The slag processed by the hydrocyclone (17) is discharged from the device after being processed by the vibrating screen II 1. VII. Submersible sand pump II (13) comes with valves and backwashing pipelines, used to impact the sediment in the mixing tank (18) of the agitator, making it easy to clean the tank; 8. The automatic sludge removal device for coal mine water tanks achieves automated operation through the controller (11), controls the start and stop of submersible sand pump I (1) and submersible sand pump II (13); controls the opening and closing of electric valve I (2), electric valve II (3), and electric valve III (4) and the valve opening degree adjustment; collects data from flow meter I (7), flow meter II (9), liquid level sensor (10), and pressure gauge (15) and displays it in the human-machine interface; 9. In the human-machine interface of the controller (11), the sludge disturbance operation time inside the water tank, the device circulation operation time, the high and low thresholds of the water tank level and the alarm values ​​of each flow can be set according to the sludge dredging needs of the coal mine water tank. The dredging process flow can be compiled to realize the one-click start and stop operation of the automatic dredging device. By real-time detection of flow rate, liquid level and other parameters, the device can be alarmed for abnormal fault status.

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