Gas extraction negative pressure automatic water discharging device

Abstract

The utility model discloses a gas extraction negative pressure automatic water discharging device which comprises a barrel body and a barrel cover, the upper end of the barrel body is sealed through the barrel cover, the lower end of the barrel body is provided with supporting legs for supporting, the side wall of the barrel body is provided with a water inlet pipe connected with a gas extraction pipeline, and the water inlet pipe is provided with a first check valve. A valve seat is fixed on the cylinder cover, a through hole is formed in the valve seat and can be communicated with the atmosphere and the cylinder body, and a water drain pipe is arranged at the bottom end of the cylinder body and is provided with a check valve II; a floating ball is arranged in the barrel, a valve rod penetrates through the middle of the floating ball, and the floating ball drives the valve rod to move up and down due to buoyancy; and the lower end of the valve rod can be attracted with a magnet fixed at the bottom end of the cylinder, so that the negative-pressure automatic water drainer for gas extraction is simple in structure, quick in response, easy to maintain, safe and reliable to use, economical and practical.

Description

Technical Field

[0001] This utility model relates to the field of automatic negative pressure water release technology for gas extraction, specifically to an automatic negative pressure water release device for gas extraction. Background Technology

[0002] Timely gas drainage is a crucial prerequisite for coal mining operations. However, during gas drainage, liquid water in the coal seam inevitably flows into the drainage pipeline due to its own weight and negative pressure. As the water volume in the drainage pipeline increases, it severely affects the drainage effect. Therefore, water blockage is a prominent problem during on-site drainage, and the key equipment for solving this problem is the water drainer. Currently, mine water drainers are mainly manual and automatic. Manual water drainers require workers to operate them periodically. While reliable and with a low failure rate, they suffer from low drainage efficiency and wasted manpower. Negative pressure automatic water drainers are triggered when the water level reaches a certain height, eliminating the need for frequent manual operation. However, existing automatic water drainers have complex structures, a high failure rate, and key vulnerable components are located inside the drainer, making maintenance relatively difficult and posing a certain threat to the safety of gas drainage.

[0003] Therefore, a gas extraction negative pressure automatic water release device is needed. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a gas extraction negative pressure automatic water release device that is simple in structure, fast in response, easy to maintain, and safe and reliable in use.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an automatic negative pressure water discharge device for gas extraction, comprising a cylinder and a cylinder cover, the upper end of the cylinder being sealed by the cylinder cover, the lower end of the cylinder being supported by a support leg, the side wall of the cylinder having a water inlet pipe connected to the gas extraction pipeline, the water inlet pipe being equipped with a check valve; a valve seat being fixed on the cylinder cover, the valve seat having a through hole for connecting the atmosphere and the cylinder, a drain pipe being provided at the bottom end of the cylinder, the drain pipe being equipped with a check valve; a float ball being contained inside the cylinder, the middle of which is pierced by a valve stem, the float ball driving the valve stem to move up and down due to buoyancy; the lower end of the valve stem can be attracted to a magnet fixed at the bottom end of the cylinder, and the upper end can be attracted to a magnet fixed in the valve seat.

[0006] Preferably, a float ball is fixedly connected to the valve stem in a sealing manner.

[0007] Preferably, floats extend through both ends of the valve stem, and a fixed cylinder is provided at the bottom of the cylinder body. A magnet is provided at the bottom of the fixed cylinder. The bottom of the valve stem is inserted into the inside of the fixed cylinder and attracts the magnet inside the fixed cylinder. A magnet base is installed at the top of the valve stem through the through hole. The float descends as the liquid water flows out, causing the valve stem to move downward, so that the magnet base attracts the magnet on the valve seat, and the valve seat limits the downward sliding of the magnet base.

[0008] Preferably, the water inlet pipe is located in the upper middle part of the cylinder to increase the liquid water capacity of the cylinder.

[0009] Preferably, a negative pressure regulating valve is provided on the surface of the cylinder at the top of the water inlet pipe to regulate the negative pressure inside the cylinder.

[0010] Preferably, the depth of the valve stem inserted into the fixed cylinder is greater than the height to which the valve stem rises due to buoyancy.

[0011] In summary, this utility model provides a negative pressure automatic water release device for gas extraction. Compared with the prior art, this utility model has the following advantages: the key vulnerable components are all located outside the water release device. The negative pressure water release device for gas extraction pipelines described in this invention has a simple structure, rapid response, is easy to maintain, safe and reliable to use, and is economical and practical. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the automatic negative pressure water discharge device for gas extraction according to this utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the automatic negative pressure water discharge device for gas extraction according to this utility model.

[0014] In the diagram: 1. Cylinder body; 2. Cylinder cover; 3. Support leg; 4. Inlet pipe; 5. Check valve one; 6. Valve seat; 7. Through hole; 11. Drain pipe; 12. Check valve two; 13. Float ball; 14. Valve stem; 15. Fixed cylinder; 16. Magnet base one; 17. Negative pressure regulating valve. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figures 1 to 2 As shown:

[0017] This utility model relates to an automatic negative pressure water release device for gas extraction. To achieve a simple structure, rapid response, easy maintenance, and safe and reliable operation, the device employs a technical structure including a cylinder 1 and a cylinder cover 2. The upper end of the cylinder 1 is sealed by the cylinder cover 2, and the lower end of the cylinder 1 is supported by legs 3. The side wall of the cylinder 1 has a water inlet pipe 4 connected to the gas extraction pipeline. The water inlet pipe 4 is equipped with a check valve 5, which may be, but is not limited to, a ZZYP series self-operated pressure regulating valve. The cylinder cover 2... A valve seat 6 is fixed, and the valve seat 6 has a through hole 7 that connects to the atmosphere and the cylinder 1. The bottom end of the cylinder 1 is provided with a drain pipe 11, and the drain pipe 11 is provided with a second check valve 12. The second check valve 12 is selected from, but is not limited to, a ZZYP series self-operated pressure regulating valve. There is a float ball 13 inside the cylinder 1. The middle of the float ball 13 is passed through by a valve stem 14. The float ball 13 drives the valve stem 14 to move up and down due to buoyancy. The lower end of the valve stem 14 can be attracted to a magnet fixed at the bottom end of the cylinder 1, and the upper end can be attracted to a magnet fixed in the valve seat 6.

[0018] In at least one embodiment, in order to enable the valve stem 14 to move up and down with the float 13 and to achieve a sealed connection, the float 13 is fixedly connected to the valve stem 14 in a sealed manner, so as to achieve a sealed installation of the float 13 and the valve stem 14, and to accurately and quickly drive the valve stem 14 to move up and down to open and close the through hole 7 and adjust the negative pressure state of the cylinder 1.

[0019] In at least one embodiment, floats 13 extend through both ends of the valve stem 14. A fixed cylinder 15 is provided at the bottom of the cylinder 1. A magnet is provided at the bottom of the fixed cylinder 15. The bottom of the valve stem 14 is inserted into the inside of the fixed cylinder 15 and attracts the magnet inside the fixed cylinder 15. A magnet base 16 is installed at the top of the valve stem 14 through the through hole 7. The floats 13 descend as the liquid water flows out, causing the valve stem 14 to move downward, so that the magnet base 16 attracts the magnet on the valve seat 6 and the valve seat 6 limits the downward sliding of the magnet base 16.

[0020] Specifically: In the initial state, the cylinder 1 is adjusted to a negative pressure state. As the check valve 12 on the drain pipe 11 opens, liquid water flows into the cylinder 1. The float 13 increases buoyancy as the liquid water rises, causing the valve stem 14 to move upward. The valve stem 14, located inside the fixed cylinder 15, separates from and is attracted to the magnet as it moves upward. The magnet on the valve stem 14 is attracted to and separated from the magnet on the valve seat 6, opening the through hole 7, which reduces or eliminates the negative pressure inside the cylinder 1. The check valve 12 opens, and liquid water flows out of the cylinder 1. As the buoyancy of the float 13 decreases, it moves downward. The bottom of the valve stem 14 is attracted to the magnet inside the fixed cylinder 15. When the magnet base 16 on the upper part of the valve stem 14 is attracted to the magnet on the valve seat 6, the through hole 7 closes. As the liquid water flows out, the negative pressure inside the cylinder 1 increases, the check valve 5 closes, and the check valve 12 opens to continue the flow of liquid water into the cylinder 1.

[0021] In at least one embodiment, the water inlet pipe 4 is positioned in the upper middle part of the cylinder 1, and the height of the float 13 is matched with the height of the water inlet pipe 4 to increase the liquid water capacity of the cylinder 1.

[0022] In at least one embodiment, in order to achieve initial negative pressure adjustment inside the cylinder 1 and to adjust the negative pressure inside the cylinder 1 during use, a negative pressure regulating valve 17 is provided on the surface of the cylinder 1 above the water inlet pipe 4 to adjust the negative pressure inside the cylinder 1. The negative pressure regulating valve 17 is a one-way valve and is connected to the gas extraction pipeline. Since the gas extraction pipeline is in a negative pressure state, the negative pressure inside the cylinder 1 is adjusted.

[0023] In at least one embodiment, in order to enable the valve stem 14 to move up and down within the range of the fixed cylinder 15 and the through hole 7, and to prevent the valve stem 14 from falling out of the fixed cylinder 15, the structure is as follows: the depth of the valve stem 14 inserted into the fixed cylinder 15 is greater than the height of the valve stem 14 rising due to buoyancy.

[0024] During operation, liquid water and negative pressure in the gas drainage pipeline enter the cylinder 1 through the inlet pipe 4, causing the water level inside the cylinder 1 to rise. This increases the buoyancy of the float 13. When the buoyancy of the float 13 exceeds the attraction force of the magnet and the weight of the float 13, the float 13 moves away from the magnet, causing the valve stem 14 to move upward. This allows the through hole 7 on the valve seat 14 to connect with the atmosphere, thereby reducing or eliminating the negative pressure inside the cylinder 1. This, in turn, opens the check valve 12 at the drain outlet and closes the inlet. Check valve 5 at the inlet allows water to flow out of the cylinder 1. As the water level in the cylinder 1 drops, the buoyancy of the float 13 decreases. When the buoyancy of the float 13 is less than its weight, the float 13 descends, causing the valve stem 14 to move downwards and engage with the upper and lower magnets of the cylinder 1. This causes the valve seat 6 to have a through hole 7 that blocks the atmosphere, thereby increasing the negative pressure inside the cylinder 1. This closes check valve 12 at the drain outlet and opens check valve 5 at the inlet, allowing liquid water to re-enter the cylinder 1. This cycle repeats to achieve automatic drainage.

[0025] The embodiments described in this utility model are for illustrative purposes only and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutions that can be conceived by those skilled in the art are all within the protection scope of this utility model.

Claims

1. A gas extraction negative pressure automatic water discharge device, characterized in that, The cylinder (1) includes a cylinder body (1) and a cylinder cover (2). The upper end of the cylinder body (1) is sealed by the cylinder cover (2). The lower end of the cylinder body (1) is supported by a support leg (3). The side wall of the cylinder body (1) has an inlet pipe (4) connected to the gas drainage pipeline. The inlet pipe (4) is equipped with a check valve (5). A valve seat (6) is fixed on the cylinder cover (2). The valve seat (6) has a through hole (7) that can connect the atmosphere and the cylinder body (1). The bottom end of the cylinder body (1) is equipped with a drain pipe (11). The drain pipe (11) is equipped with a check valve (12). There is a float (13) inside the cylinder body (1). The middle of the float (13) is through a valve stem (14). The float (13) drives the valve stem (14) to move up and down due to buoyancy. The lower end of the valve stem (14) can be attracted to a magnet fixed at the bottom end of the cylinder body (1), and the upper end can be attracted to a magnet fixed in the valve seat (6).

2. The automatic negative pressure water discharge device for gas extraction according to claim 1, characterized in that, A float (13) is fixedly connected to the valve stem (14) in a sealing manner.

3. The automatic negative pressure water discharge device for gas extraction according to claim 2, characterized in that, A float (13) extends through both ends of the valve stem (14). A fixed cylinder (15) is provided at the bottom of the cylinder (1). A magnet is provided at the bottom of the fixed cylinder (15). The bottom of the valve stem (14) is inserted into the inside of the fixed cylinder (15) and attracts the magnet inside the fixed cylinder (15). A magnet base (16) is installed through the through hole (7) at the top of the valve stem (14). The float (13) descends as the liquid water flows out, causing the valve stem (14) to move downward, so that the magnet base (16) attracts the magnet on the valve seat (6) and the valve seat (6) limits the downward sliding of the magnet base (16).

4. The automatic negative pressure water discharge device for gas extraction according to claim 1, characterized in that, The water inlet pipe (4) is located in the upper middle part of the cylinder (1) to increase the liquid water capacity of the cylinder (1).

5. The automatic negative pressure water discharge device for gas extraction according to claim 1, characterized in that, A negative pressure regulating valve (17) is provided on the surface of the cylinder (1) above the water inlet pipe (4) to regulate the negative pressure inside the cylinder (1).

6. The automatic negative pressure water discharge device for gas extraction according to claim 3, characterized in that, The depth of the valve stem (14) inserted into the fixed cylinder (15) is greater than the height of the valve stem (14) raised by buoyancy.

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