Automatic drainage device for underground coal mine

Abstract

The utility model provides a coal mine underground automatic drainage device which comprises an air source filter, a magnetic valve, a pneumatic control valve, a pressure ventilation pipe and a diaphragm pump, the air source filter is connected between the air inlet end of the magnetic valve and the pressure ventilation pipe, the air outlet end of the magnetic valve is connected with the first air inlet end of the pneumatic control valve, an air channel in the magnetic valve is normally closed, and a buoy is connected below the magnetic valve through an ejector rod. The buoy is arranged at an underground drainage point, a second air inlet end of the pneumatic control valve is connected with the pressure ventilation pipe, an air outlet end of the pneumatic control valve is connected with an air source inlet of the diaphragm pump, and an air channel in the pneumatic control valve is normally closed. According to the underground automatic drainage device for the coal mine, the buoy arranged at the underground drainage point serves as a switch of the magnetic valve, then the pneumatic control valve and the diaphragm pump are controlled to conduct automatic drainage, manual guarding is not needed, labor cost is saved, and the situation that water overflows a roadway due to negligence of people is avoided. And meanwhile, the device is driven by static pressure wind, has no electrical equipment and is suitable for underground working environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground operation, in particular to an automatic drainage device for underground coal mines. Background Art

[0002] Tunnels are various passages drilled between the surface and the ore body, used for ore transportation, ventilation, drainage, pedestrians, and various necessary preparations for the new excavation of ore for metallurgical equipment. Mine tunnels are mostly located deep underground, especially when the working face enters the aquifer during construction and the coal seam seeps water, so there is usually water accumulation in the tunnel, and too much water accumulation will cause the soil to become loose. If the accumulated water is not discharged immediately, it will affect the stability of the tunnel roadbed structure and cause safety accidents. Therefore, during the construction of coal mine tunnels, it is necessary to arrange workers to release water at the drainage points, which has high labor costs. When the workers are responsible for too many drainage points or are negligent, it will cause flooding in the tunnel. Chinese utility model CN ​​205779012 U discloses an automatic drainage device for a lane, which includes a box placed in a water collection tank and an air inlet and an air outlet arranged on the box, the air inlet is connected to the external compressed air through a pipeline, the air outlet is connected to the diaphragm pump through a pipeline, the water suction port of the diaphragm pump is placed in the water collection tank, a pneumatic control valve, a pneumatic valve controller for controlling the opening or closing of the pneumatic control valve, and a voltage stabilizing filter are arranged in the box, a locking device for starting or closing the pneumatic valve controller is connected to the pneumatic valve controller, a guide rail extending to the bottom of the box is connected to the locking device, and a float that can slide freely relative to the guide rail and can trigger the locking device is arranged on the guide rail. The entire device is placed horizontally at the deepest part of the accumulated water, and requires regular maintenance, with high labor costs. Summary of the invention

[0003] The technical problem solved by the utility model is the high labor cost of the existing underground tunnel drainage device.

[0004] The utility model provides an automatic drainage device for underground coal mines, comprising an air source filter, a magnetic valve, an air control valve, a compressed air pipe, and a diaphragm pump, wherein the air source filter is connected between the air inlet end of the magnetic valve and the compressed air pipe, the air outlet end of the magnetic valve is connected to the first air inlet end of the air control valve, the internal airway of the magnetic valve is normally closed, a float is connected to the bottom of the magnetic valve through a push rod, the float is placed at an underground drainage point, the float is used to control the opening and closing of the internal airway of the magnetic valve, the second air inlet end of the air control valve is connected to the compressed air pipe, the air outlet end of the air control valve is connected to the air source inlet of the diaphragm pump, the internal airway of the air control valve is normally closed, and the opening and closing of the internal airway is controlled by the magnetic valve connected thereto, thereby controlling the opening and closing of the diaphragm pump.

[0005] Furthermore, as the downhole liquid level rises, the float pushes the push rod to open the internal channel in the magnetic valve, thereby controlling the air control valve to open, and compressed air enters the diaphragm pump, which starts working and automatically drains water.

[0006] Furthermore, silencer valves are provided on both sides of the air inlet end of the magnetic valve.

[0007] Furthermore, the push rod is a hard PVC tube.

[0008] Furthermore, the air source filter is provided with a pressure knob at the upper end, an impurity storage chamber at the lower end, and a pressure gauge at the side.

[0009] Furthermore, it also includes a bracket, which is fixedly arranged on one side of the underground drainage point, and the air source filter, magnetic valve, air control valve, and compressed air pipe are all fixedly connected to the bracket.

[0010] The utility model has the following beneficial effects: the utility model uses the float placed at the underground drainage point as a magnetic valve switch to control the air-controlled valve and the diaphragm pump for automatic drainage, without the need for manual supervision, saving labor costs and avoiding the occurrence of flooding in the tunnel due to negligence. At the same time, the utility model is driven by static pressure wind and has no electrical equipment, which is suitable for underground working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 , Schematic diagram of the utility model automatic drainage device for underground coal mines. DETAILED DESCRIPTION

[0012] In order to clearly illustrate the technical features of this solution, the solution is described below through specific implementation methods and in combination with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the utility model.

[0013] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0014] like Figure 1 As shown, an automatic drainage device for underground coal mines includes an air source filter 1, a magnetic valve 2, an air control valve 3, a compressed air pipe 4, a diaphragm pump, and a bracket. The bracket is fixedly arranged on one side of the underground drainage point, and the air source filter 1, the magnetic valve 2, the air control valve 3, and the compressed air pipe 4 are all fixedly connected to the bracket.

[0015] The air source filter 1 is connected between the air inlet end of the magnetic valve 2 and the compressed air pipe 4. The air source filter 1 is provided with a pressure knob at the upper end, an impurity storage chamber at the lower end, and a pressure gauge on the side. The ventilation volume is controlled by the pressure knob, which is specifically displayed by the pressure gauge, and the moisture and impurities in the gas are filtered at the same time. Silence valves 6 are provided on both sides of the air inlet end of the magnetic valve 2. The air outlet end of the magnetic valve 2 is connected to the first air inlet end of the air control valve 3. The internal airway of the magnetic valve 2 is normally closed. A float 5 is connected to the bottom of the magnetic valve 2 through a push rod. In this embodiment, the push rod is a hard PVC pipe. The float 5 is placed at the drainage point underground. The float 5 is used to control the opening and closing of the internal airway of the magnetic valve 2. When the float 5 rises, the internal airway of the magnetic valve 2 is opened. The second air inlet end of the air control valve 3 is connected to the compressed air pipe 4, and the air outlet end of the air control valve 3 is connected to the air source inlet of the diaphragm pump. The internal airway of the air control valve 3 is normally closed, and the opening and closing of the internal airway is controlled by the magnetic valve 2 connected to it, thereby controlling the opening and closing of the diaphragm pump. When there is an air source at the first air inlet end of the air control valve 3, the internal airway is opened.

[0016] As the underground liquid level rises, the float 5 pushes the push rod upward to open the internal channel of the magnetic valve 2, and then controls the air control valve 3 to open, and the compressed air enters the diaphragm pump, so that the diaphragm pump starts to work and automatically drains water. When the underground liquid level returns to normal, the float 5 moves downward to close the internal channel of the magnetic valve 2, and the air control valve 3 is closed accordingly, and then the diaphragm pump is closed to stop draining water. No manual supervision is required, which saves labor costs and avoids the occurrence of flooding in the tunnel due to negligence.

[0017] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0018] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An automatic drainage device for underground coal mines, characterized in that: Including air source filter, magnetic valve, air control valve, compressed air pipe, diaphragm pump, The air source filter is connected between the air inlet end of the magnetic valve and the air pressure pipe. The air outlet of the magnetic valve is connected to the first air inlet of the air control valve. The air passage inside the magnetic valve is normally closed. A float is connected to the bottom of the magnetic valve through a push rod. The float is placed at a drainage point underground. The float is used to control the opening and closing of the air passage inside the magnetic valve. The second air inlet end of the air control valve is connected to the compressed air pipe, and the air outlet end of the air control valve is connected to the air source inlet of the diaphragm pump. The internal airway of the air control valve is normally closed, and the opening and closing of the internal airway is controlled by the magnetic valve connected to it, thereby controlling the opening and closing of the diaphragm pump.

2. The automatic drainage device for underground coal mines according to claim 1, characterized in that: As the downhole liquid level rises, the float pushes the push rod to open the internal channel of the magnetic valve, thereby controlling the air control valve to open, and compressed air enters the diaphragm pump, which starts to work and automatically drains water.

3. The automatic drainage device for underground coal mines according to claim 1, characterized in that: Silence valves are arranged on both sides of the air inlet end of the magnetic valve.

4. The automatic drainage device for underground coal mines according to claim 1, characterized in that: The push rod is a hard PVC tube.

5. The automatic drainage device for underground coal mines according to claim 1, characterized in that: The air source filter is provided with a pressure knob at the upper end, an impurity storage chamber at the lower end, and a pressure gauge at the side.

6. The automatic drainage device for underground coal mines according to claim 1, characterized in that: It also includes a bracket, which is fixedly arranged on one side of the underground drainage point, and the air source filter, magnetic valve, air control valve, and compressed air pipe are all fixedly connected to the bracket.

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