Automatic mine drainage system based on diaphragm pump

Abstract

The utility model discloses an automatic mine drainage system based on a diaphragm pump. The system comprises a liquid level sensor, a control system and the pneumatic diaphragm pump. The liquid level sensor is fixed in a water tank in a mine and is connected with the control system through a signal input line; an inlet of the pneumatic diaphragm pump extends into a water tank through a water inlet pipe, and an outlet of the pneumatic diaphragm pump is connected into a mine drainage system through a drainage pipe; an air inlet pipe of the pneumatic diaphragm pump is connected with a mine compressed air system through a compressed air pipe; an electric ball valve is arranged on the pressure ventilation pipe and connected with a control system through a signal output line. Through the application, automatic drainage can be realized, a specially-assigned person is not needed to control the start and stop of the pump, and the construction efficiency is extremely high.

Description

Technical Field

[0001] This application relates to the technical field of underground coal mine automatic control, and particularly to an automatic mine drainage system based on a diaphragm pump. Background Art

[0002] Coal mine exploitation is a complex underground engineering activity. During this process, drilling and blasting operations involved are the basic means of excavating coal seams and rocks. These operations will damage the rock structure, causing groundwater and fissure water in the rock strata to be released. With the increase in drilling depth and the expansion of the mining area, the amount of water released will also increase accordingly, forming a large amount of wastewater. The accumulation of wastewater may also trigger flood disasters, posing threats to miners' safety and equipment, and at the same time bringing challenges to the environmental protection and water treatment work in the mine. Therefore, during the coal mine exploitation process, an effective wastewater management and treatment system is of great significance for ensuring operation safety, reducing environmental pollution, and improving resource utilization rate.

[0003] In the prior art, electric pumps, sewage pumps, and pneumatic diaphragm pumps are used to pump into the mine drainage system in a timely manner. Currently, special personnel are required to control the start and stop of the pumps, which wastes a large amount of human resources and the construction efficiency is extremely low. Summary of the Invention

[0004] Based on this, in view of the above technical problems, an automatic mine drainage system based on a diaphragm pump is provided to solve the problem that in the prior art, special personnel are required to control the start and stop of the pumps, which wastes a large amount of human resources and the construction efficiency is extremely low.

[0005] An automatic mine drainage system based on a diaphragm pump, the system includes: a liquid level sensor, a control system, and a pneumatic diaphragm pump;

[0006] The liquid level sensor is fixed in the water tank in the mine and is connected to the control system through a signal input line;

[0007] The inlet of the pneumatic diaphragm pump extends into the water tank through a water inlet pipe, and the outlet of the pneumatic diaphragm pump is connected to the mine drainage system through a drainage pipe;

[0008] The air inlet pipe of the pneumatic diaphragm pump is connected to the mine compressed air system through a compressed air pipe; an electric ball valve is provided on the compressed air pipe, and the electric ball valve is connected to the control system through a signal output line.

[0009] In the above solution, optionally, the system further includes: a high water level float switch device, a low water level float switch device;

[0010] The magnetic switch in the high water level float switch device closes when the water level reaches the level requiring drainage; the magnetic switch in the low water level float switch device closes when the water level reaches the level not requiring drainage;

[0011] The output ends of the high water level float switch device and the low water level float switch device are connected to the controller system through signal output lines.

[0012] In the above solution, further optionally, the system further includes: an alarm device; the alarm device is connected to the control system through a signal output line.

[0013] In the above solution, optionally, the control system is a DN15 electric ball valve controller, which is placed in an electric control box;

[0014] The electric control box further includes an electric control box housing, a battery pack, a driving motor, and a speed reducer; the output end of the battery pack is connected to the input end of the controller, and the output end of the controller is sequentially connected to the driving motor and the speed reducer.

[0015] In the above solution, optionally, a check valve is provided on the drain pipe.

[0016] In the above solution, optionally, a suction filter is provided at one end of the water inlet pipe that extends into the water tank.

[0017] In the above solution, optionally, the model of the liquid level sensor is sk-2.

[0018] In the above solution, optionally, the models of the pneumatic diaphragm pumps are BS-25, BS-40, BS-50, and BS-80.

[0019] This application has at least the following beneficial effects:

[0020] In this application, the liquid level sensor is used to detect the water tank in the mine. When the liquid level sensor detects that the water level reaches the high water level threshold, the pneumatic diaphragm pump is driven by the control system to drain the water in the water tank. When the liquid level sensor detects that the water level reaches the low water level threshold, the pneumatic diaphragm pump is stopped by the control system. Thus, automatic drainage is achieved, and there is no need for a special person to control the start and stop of the pump, and the construction efficiency is extremely high.

[0021] In addition, a high water level float sensing device and a low water level float sensing device are also provided in the water tank to ensure the reliability of the operation of the pneumatic diaphragm pump in case the liquid level sensor is damaged and the water level cannot be monitored, thus preventing the problem of being unable to drive or stop the pneumatic diaphragm pump. Description of the Drawings

[0022] Figure 1 It is a structural diagram of an automatic drainage system for a mine based on a diaphragm pump provided by an embodiment of this application;

[0023] Figure 2 It is a structural schematic diagram of an electric control box provided by an embodiment of this application. Detailed Embodiments

[0024] To make the objectives, technical solutions and advantages of this application more clear and understandable, the following further elaborates on this application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application.

[0025] In one embodiment, as Figure 1 shown, a mine automatic drainage system based on a diaphragm pump is provided. The system includes: a liquid level sensor 2, a control system, and a pneumatic diaphragm pump 1;

[0026] The liquid level sensor 2 is fixed in a water tank 4 in the mine and is connected to the control system through a signal input line;

[0027] The inlet of the pneumatic diaphragm pump 1 extends into the water tank 4 through a water inlet pipe, and the outlet of the pneumatic diaphragm pump 1 is connected to the mine drainage system through a drainage pipe;

[0028] The air inlet pipe of the pneumatic diaphragm pump 1 is connected to the mine compressed air system through a compressed air pipe; an electric ball valve 5 is provided on the compressed air pipe, and the electric ball valve 5 is connected to the control system through a signal output line.

[0029] In this embodiment, according to the water level monitored by the liquid level sensor 2 in the water tank, the water level information is uploaded to the control system to determine whether the detected value of the control system reaches a preset value. If it reaches the high water level preset value, the control system controls the electric ball valve to issue an opening instruction through the signal output line to control the opening of the pneumatic diaphragm pump 1; the pneumatic diaphragm pump 1 discharges the water in the water tank into the mine drainage system through the drainage pipe. When the water level is lower than the low water level prediction value, the control system controls the electric ball valve to issue a closing instruction through the signal output line to control the closing of the pneumatic diaphragm pump 1;

[0030] In the above-mentioned mine automatic drainage system based on a diaphragm pump, when the liquid level sensor 2 detects the water tank in the mine and the liquid level sensor 2 detects that the water level reaches the high water level threshold, the pneumatic diaphragm pump 1 is driven by the control system to drain the water in the water tank. When the liquid level sensor 2 detects that the water level reaches the low water level threshold, the control system stops the pneumatic diaphragm pump from operating. Thus, automatic drainage is achieved, and there is no need for a special person to control the start and stop of the pump, and the construction efficiency is extremely high.

[0031] In one embodiment, the system further includes: a high water level float switch device 6 and a low water level float switch device 7;

[0032] The magnetic switch in the high water level float switch device 6 closes when the water level reaches the level that needs to be drained; the magnetic switch in the low water level float switch device 7 closes when the water level reaches the level that does not need to be drained;

[0033] The output ends of the high water level float switch device 6 and the low water level float switch device 7 are connected to the controller system through signal output lines.

[0034] In this embodiment, a high water level float switch device 6 and a low water level float switch device 7 are also arranged in the water tank to solve the problem that when the liquid level sensor is damaged and the water level cannot be monitored, the pneumatic diaphragm pump 1 cannot be driven or stopped, thus ensuring the reliability of the operation of the pneumatic diaphragm pump.

[0035] The system further includes: an alarm device; the alarm device is connected to the control system through a signal output line.

[0036] When the liquid level sensor or the high water level float sensing device monitors that the water in the water tank exceeds the high water level line and the pneumatic diaphragm pump 1 does not operate, the control system controls the alarm device to give an alarm to prompt the staff to take measures. The alarm device is not shown in the figure.

[0037] In one embodiment, the control system is a DN15 electric ball valve controller, which is placed in the electric control box 3;

[0038] As Figure 2 shown, the electric control box 3 further includes an electric control box shell, a battery pack, a driving motor, and a speed reducer; the output end of the battery pack is connected to the input end of the controller, and the output end of the controller is sequentially connected to the driving motor and the speed reducer.

[0039] In one embodiment, a check valve 8 is arranged on the drain pipe.

[0040] In this embodiment, the check valve 8 is arranged on the drain pipe to prevent water from flowing back from the drainage system into the water tank. During the drainage process, if the pressure in the drain pipe suddenly decreases, it may cause the water body to flow back, and the check valve can prevent this situation from occurring.

[0041] In one embodiment, a suction filter 9 is arranged at one end of the water inlet pipe that extends into the water tank.

[0042] In this embodiment, the suction filter valve 9 is arranged in the water inlet pipe to intercept solid impurities in the water, such as sand, stones, coal gangue, etc., to prevent these impurities from entering the water pump and the drainage pipeline, and reduce the wear and blockage of the equipment.

[0043] In one embodiment, the model of the liquid level sensor 2 is sk-2.

[0044] In one embodiment, the models of the pneumatic diaphragm pump 1 are BS-25, BS-40, BS-50 or BS-80.

[0045] The advantages of using a pneumatic diaphragm pump 1 in this application compared to using a sewage pump traditionally are as follows: The pneumatic diaphragm pump 1 itself is an explosion-proof product; moreover, the pneumatic diaphragm pump 1 can pump and drain media with solid particles; finally, there is no power supply in many places in the mine, and using gas source is both convenient and safe.

[0046] And the control system of this application adopts a rechargeable control system, which is convenient and practical. The batteries are used in a one-for-one standby mode, and can be replaced at any time when out of power.

[0047] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0048] The above-described embodiments only represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several deformations and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application should be subject to the appended claims.

Claims

1. An automatic mine drainage system based on a diaphragm pump, characterized in that, The system includes: a liquid level sensor, a control system, and a pneumatic diaphragm pump; The liquid level sensor is fixed in a water tank in the mine and is connected to the control system through a signal input line; The inlet of the pneumatic diaphragm pump extends into the water tank through a water inlet pipe, and the outlet of the pneumatic diaphragm pump is connected to the mine drainage system through a drainage pipe; The air inlet pipe of the pneumatic diaphragm pump is connected to the mine compressed air system through a compressed air pipe; an electric ball valve is arranged on the compressed air pipe, and the electric ball valve is connected to the control system through a signal output line.

2. The automatic mine drainage system based on a diaphragm pump according to claim 1, wherein The system further includes: a high water level float switch device and a low water level float switch device; The magnetic switch in the high water level float switch device closes when the water level reaches the level where drainage is required; the magnetic switch in the low water level float switch device closes when the water level reaches the level where drainage is not required; The output ends of the high water level float switch device and the low water level float switch device are connected to the control system through signal output lines.

3. The automatic mine drainage system based on a diaphragm pump according to claim 2, wherein, The system further includes: an alarm device; the alarm device is connected to the control system through a signal output line.

4. The automatic mine drainage system based on a diaphragm pump according to claim 1, wherein The control system is a DN15 electric ball valve controller and is placed in an electric control box; The electric control box further includes an electric control box housing, a battery pack, a driving motor, and a speed reducer; the output end of the battery pack is connected to the input end of the controller, and the output end of the controller is sequentially connected to the driving motor and the speed reducer.

5. The automatic mine drainage system based on a diaphragm pump according to claim 1, characterized in that, A check valve is arranged on the drainage pipe.

6. The automatic mine drainage system based on a diaphragm pump according to claim 1, characterized in that, A suction filter is arranged at one end of the water inlet pipe extending into the water tank.

7. The automatic mine drainage system based on a diaphragm pump according to claim 1, characterized in that, The model of the liquid level sensor is sk-2.

8. The automatic mine drainage system based on a diaphragm pump according to claim 1, wherein The models of the pneumatic diaphragm pump are BS-25, BS-40, BS-50, or BS-80.

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