Automatic drainage device for mining gas exhaust pipe

Abstract

The utility model belongs to the technical field of coal mine gas drainage, and particularly relates to an automatic drainage device of a gas exhaust pipe. In order to solve the problems of unattended monitoring, single-person single-post operation risk and the like in a gas pump station during the gas exhaust pipe drainage and drainage period, the automatic gas exhaust pipe drainage and drainage device comprises a positive-pressure automatic drainage device, a negative-pressure automatic drainage device and a gas pump station drainage and drainage device, the water storage tank is used for receiving water discharged by the positive-pressure automatic water discharging device; and the automatic drainage device is connected with the water storage tank. According to the utility model, accumulated water in the pipeline can be automatically discharged. In actual operation, the frequency that post personnel enter a return airway is greatly reduced, the problem that the pump station is not monitored by people during drainage at present is solved, and hidden dangers such as unsmooth exhaust of a drainage system, load increase of a roots pump and current increase of a motor are completely eradicated.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine gas drainage, and particularly relates to an automatic gas exhaust pipe water discharging and draining device. Background Technique

[0002] The exhaust pipe of the gas drainage pump station in the coal mine underground is usually laid and hung along the roof of the return airway. When encountering a low-lying area, water is likely to accumulate in this place in the exhaust pipe. If the accumulated water is not discharged in time, it will cause problems such as a reduction in the cross-section of the drainage pipe, poor exhaust of the drainage system, an increase in the load of the Roots pump, an increase in the motor current, and even lead to an unscheduled shutdown of the Roots pump, resulting in a gas overrun accident in the coal mine underground.

[0003] In addition, due to the long laying distance of the exhaust pipe of the underground gas drainage pump station, maintenance personnel must enter the return airway for water discharging and draining operations. Single-person and single-post operations are time-consuming and laborious, and there are also relatively large safety hazards. Content of the Utility Model

[0004] The utility model provides an automatic gas exhaust pipe water discharging and draining device for coal mines to solve problems such as no one monitoring in the gas pump station during the water discharging and draining of the exhaust pipe and the risk of single-person and single-post operations.

[0005] The utility model adopts the following technical solutions: an automatic gas exhaust pipe water discharging and draining device for coal mines, comprising:

[0006] A positive pressure automatic water discharging device, which is communicated with the exhaust pipe of the gas pump station;

[0007] A water storage tank, which receives the water discharged by the positive pressure automatic water discharging device;

[0008] An automatic drainage device, which is connected to the water storage tank.

[0009] In some embodiments, the positive pressure automatic water discharging device comprises:

[0010] A positive pressure automatic water discharger;

[0011] A U-shaped pipe, one end of which is connected to the exhaust pipe of the gas pump station, and the other end is connected to the positive pressure automatic water discharger;

[0012] A pressure balance pipe, one end of which is communicated with the exhaust pipe of the gas pump station and extends to the upper part of the exhaust pipe of the gas pump station, and the other end is communicated with the positive pressure automatic water discharger.

[0013] In some embodiments, the positive pressure automatic water discharger comprises a box body, a float I is arranged in the box body, a water discharging port is arranged at the bottom of the box body, a water discharging port plug is arranged in the water discharging port, and the water discharging port plug is connected to the float I.

[0014] In some embodiments, a U-shaped tube valve is provided on the U-shaped tube.

[0015] In some embodiments, the automatic drainage device includes:

[0016] A diaphragm pump, which is connected to the water storage tank through a water storage tank drain pipe and is used to pump the water in the water storage tank;

[0017] A diaphragm pump drain pipe, which connects the diaphragm pump and the outside;

[0018] An air duct, which communicates the diaphragm pump with the outside, and an air control valve and an air duct valve are provided on the air duct.

[0019] In some embodiments, the air control valve is controlled by a reversing valve. The control port of the reversing valve is connected to a float II through a rod. The float II is arranged in the water storage tank, and the air inlet of the reversing valve is connected to a gas source.

[0020] Compared with the prior art, the utility model has the following technical effects:

[0021] The utility model can realize the automatic drainage of accumulated water in the pipeline. During actual operation, the frequency of post personnel entering the return airway is greatly reduced, the problem that there is no one to monitor in the pumping station during the current drainage is solved, and potential hazards such as poor exhaust of the pumping system, increased load of the Roots pump, and increased motor current are eliminated. This device is simple to install and maintain. At the same time, the device solves the problem that electric automatic drainage equipment cannot be installed in the return airway of high-gas mines, and provides ideas and solutions for automatic drainage of gas exhaust pipelines and automatic drainage of return airways. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following further describes the utility model in detail with reference to the drawings;

[0023] Figure 1 is a structural schematic diagram of the utility model;

[0024] In the figure: 1, gas pumping station exhaust pipe; 2, pressure balance pipe; 3, U-shaped tube; 4, positive pressure automatic water drainer; 5, float I; 6, drain plug; 7, water storage tank; 8, reversing valve; 9, float II; 10, air control valve; 11, air duct; 12, water storage tank drain pipe; 13, diaphragm pump drain pipe; 14, diaphragm pump; 15, U-shaped tube valve; 16, air duct valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be described clearly and completely below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without any creative work belong to the scope of protection of the present utility model.

[0026] As Figure 1 shown, a kind of automatic gas drainage and water discharge device for mine gas exhaust pipe includes:

[0027] A positive pressure automatic water discharge device, which is connected to the gas exhaust pipe 1 of the gas pumping station;

[0028] A water storage tank 7, which receives the water discharged by the positive pressure automatic water discharge device;

[0029] An automatic drainage device, which is connected to the water storage tank 7.

[0030] Specifically, the positive pressure automatic water discharge device includes:

[0031] A positive pressure automatic water discharger 4;

[0032] A U-shaped pipe 3, one end of the U-shaped pipe 3 is connected to the gas exhaust pipe 1 of the gas pumping station, and the other end is connected to the positive pressure automatic water discharger 4. A U-shaped pipe valve 15 is arranged on the U-shaped pipe 3;

[0033] A pressure balance pipe 2, one end of the pressure balance pipe 2 communicates with the gas exhaust pipe 1 of the gas pumping station and extends to the upper part of the gas exhaust pipe 1 of the gas pumping station, and the other end communicates with the positive pressure automatic water discharger 4.

[0034] The length of the pressure balance pipe 2 is 700 mm, which is applicable to the gas exhaust pipe with a DN800 specification. The pressure balance pipe is inserted into the gas exhaust pipe 1 to balance the pressure inside the exhaust pipe and the positive pressure automatic water discharger.

[0035] The U-shaped pipe 3, its length is calculated comprehensively according to the pressure of the underground gas pumping station exhaust pipe affected by the number of operating pumps, the valve sealing condition, and the air pressure in the emptied roadway. Usually, the pressure of the underground gas pumping station exhaust pipe is between 2 kPa and 5 kPa. The designed length of the U-shaped pipe is 800 mm, and its pressure value P = ρgh = 1 * 9.8 * 800 pa = 7840 pa, which is greater than 5 kPa, so as to prevent gas from leaking from the drainage pipe.

[0036] The accumulated water in the exhaust pipe of the gas pumping station flows into the positive-pressure automatic water drainer through the U-shaped pipe valve and the U-shaped pipe. When the water level reaches a certain height, the float I in the automatic water drainer floats up, the plug of the water drain opening opens, and the accumulated water flows into the water storage tank. When the water level in the automatic water drainer drops, the float 1 in the automatic water drainer drops, driving the plug of the water drain opening to close, preventing the gas from overflowing. In this way, the purpose of automatic water drainage is achieved.

[0037] Specifically, the positive-pressure automatic water drainer 4 includes a box body, a float I5 is arranged inside the box body, a water drain opening is arranged at the bottom of the box body, a plug of the water drain opening is arranged inside the water drain opening, and the plug of the water drain opening is connected to the float I5. When the float I floats up, it drives the plug of the water drain opening at the bottom of the positive-pressure automatic water drainer 4 to open, and the water in the box body of the positive-pressure automatic water drainer 4 flows into the water storage tank. When the water level in the box body of the automatic water drainer drops, the float I drives the plug of the water drain opening to close, preventing the gas from overflowing.

[0038] Specifically, the automatic drainage device includes:

[0039] A diaphragm pump 14, the diaphragm pump 14 is connected to the water storage tank 7 through a water storage tank drain pipe 12, and is used to pump the water in the water storage tank 7;

[0040] A diaphragm pump drain pipe 13, the diaphragm pump drain pipe 13 is connected to the diaphragm pump 14 and the outside;

[0041] An air pipe 11, the air pipe 11 is connected to the diaphragm pump 14 and the outside, and an air control valve 10 and an air pipe valve 16 are arranged on the air pipe 11.

[0042] Specifically, the air control valve 10 is controlled by a reversing valve 8, the control port of the reversing valve 8 is connected to a float II9 through a rod, the float II9 is arranged in the water storage tank 7, and the air inlet of the reversing valve 8 is connected to a gas source. By changing the state of the reversing valve through the float II9, the opening and closing of the air control valve 10 and the start and stop of the diaphragm pump 14 are controlled, achieving the purpose of automatic drainage.

[0043] The diaphragm pump adopts the pneumatic principle, and the start and stop of the diaphragm pump are controlled by connecting an air pipe valve and an air control valve to the compressed air pipeline.

[0044] When the water level in the water storage tank reaches a certain height and the float II floats up, it changes the state of the reversing valve, the reversing valve controls the air control valve to open, and the diaphragm pump starts to work. The accumulated water flows into the drainage ditch along the water storage tank drain pipe and the diaphragm pump drain pipe. When the water level in the water storage tank drops to a certain height and the float II drops, it changes the state of the reversing valve, the reversing valve controls the air control valve to close, and the diaphragm pump stops working.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic gas exhaust and water drainage device for mine use, characterized in that, Including: A positive pressure automatic water discharging device, which is communicated with the exhaust pipe (1) of the gas pumping station; A water storage tank (7), which receives the water discharged by the positive pressure automatic water discharging device; An automatic drainage device, which is connected to the water storage tank (7).

2. The automatic gas exhaust pipe and water drainage device for coal mines according to claim 1, characterized in that, The positive pressure automatic water discharging device includes: A positive pressure automatic water discharger (4); A U-shaped pipe (3), one end of the U-shaped pipe (3) is connected to the exhaust pipe (1) of the gas pumping station, and the other end is connected to the positive pressure automatic water discharger (4); A pressure balance pipe (2), one end of the pressure balance pipe (2) is communicated with the exhaust pipe (1) of the gas pumping station and extends to the upper part of the exhaust pipe (1) of the gas pumping station, and the other end is communicated with the positive pressure automatic water discharger (4).

3. The automatic gas and water discharging device for mine gas exhaust pipes according to claim 2, characterized in that, The positive pressure automatic water discharger (4) includes a box body, a float I (5) is arranged in the box body, a water discharging port is arranged at the bottom of the box body, a water discharging port plug is arranged in the water discharging port, and the water discharging port plug is connected to the float I (5).

4. The automatic gas exhaust pipe and water drainage device for coal mines according to claim 2, characterized in that, A U-shaped pipe valve (15) is arranged on the U-shaped pipe (3).

5. The automatic gas and water discharging device for mine gas exhaust pipes according to claim 1, characterized in that, The automatic drainage device includes: A diaphragm pump (14), which is communicated with the water storage tank (7) through a water storage tank drain pipe (12) and is used for pumping the water in the water storage tank (7); A diaphragm pump drain pipe (13), which connects the diaphragm pump (14) and the outside; An air pipe (11), which is communicated with the diaphragm pump (14) and the outside, and an air control valve (10) and an air pipe valve (16) are arranged on the air pipe (11).

6. The automatic gas exhaust pipe drainage device for mines according to claim 5, characterized in that, The air control valve (10) is controlled by a reversing valve (8), the control port of the reversing valve (8) is connected to a float II (9) through a rod, the float II (9) is arranged in the water storage tank (7), and the air inlet of the reversing valve (8) is connected to a gas source.

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