Non-pressure automatic drainage device for underground coal mine compressed air pipeline

Abstract

The utility model discloses a coal mine underground compressed air pipeline non-pressure automatic drainage device which comprises a water storage tank, the upper portion of one end of the water storage tank is connected with a first Y valve, the first Y valve is connected to a compressed air pipeline, the lower position of the other end of the water storage tank is connected with a second Y valve, and the outer wall, close to the first Y valve, of the water storage tank is rotationally connected to a support. And a two-position five-way roller valve is mounted right below the water storage tank close to the second Y valve. The water storage tank is arranged below the compressed air pipeline, the first Y valve and the second Y valve are arranged at the two ends of the water storage tank correspondingly, and the two valves are automatically controlled through the two-position five-way roller valve, so that automatic drainage of the compressed air pipeline is achieved, and the problems that compressed air contains water to normally use underground compressed air equipment and accumulated water influences compressed air resistance are solved; manual regular underground compressed air pipeline drainage operation is avoided, and the labor cost is saved; and compressed air waste caused by manual drainage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine compressed air, in particular to a pressure-free automatic drain device for a compressed air pipeline in an underground coal mine. Background Art

[0002] During the operation of underground compressed air pipelines in summer, water accumulation is common, which causes damage to the equipment using compressed air at each mining face, increases the resistance of the compressed air in the pipeline, and causes compressed air pressure loss.

[0003] In order to ensure the normal use of compressed air at each mining face, the main method is to manually open the preset ball valve of the pipeline regularly to drain the accumulated water in the pipeline. This method requires manual labor, which on the one hand increases the labor cost of system operation and causes compressed air loss. On the other hand, the compressed air pressure drops instantly when the water is drained, and the compressed air pressure of the main pipeline of the system suddenly changes, resulting in a waste of resources. To this end, this application proposes a pressure-free automatic drain device for compressed air pipelines in coal mines to solve the above-mentioned shortcomings. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to solve the problem of high labor cost and sudden change of compressed air pressure in the current compressed air pipeline drainage.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A pressure-free automatic drain device for compressed air pipelines in underground coal mines, comprising a water storage tank, a first Y-valve, a second Y-valve, and a support. The first Y-valve is connected above one end of the water storage tank and is connected to the compressed air pipeline. The second Y-valve is connected slightly below the other end of the water storage tank and is rotatably connected to the support on the outer wall of the water storage tank near the first Y-valve.

[0007] A two-position five-way roller valve is installed just below the water storage tank near the second Y valve.

[0008] The present application sets a water storage tank under the compressed air pipeline, and sets a first Y valve and a second Y valve at both ends of the water storage tank respectively, one end of the first Y valve is connected to the compressed air pipeline, and a two-position five-way roller valve is set below the end of the water storage tank away from the first Y valve. The water storage tank can achieve the high and low positions at both ends by using the lever principle, and the two-position five-way roller valve is used to automatically control the two valves, thereby realizing automatic drainage and control of the compressed air pipeline, solving the problem of the system compressed air water content affecting the normal use of the underground compressed air equipment and the influence of accumulated water on the compressed air resistance; eliminating the need for manual regular drainage of the underground compressed air pipeline, saving labor costs; avoiding the waste of compressed air caused by manual drainage, and providing high-quality compressed air to the compressed air equipment at each mining face, avoiding the waste of resources caused by instantaneous reduction of compressed air pressure.

[0009] As a further solution of the present invention: a bracket is provided at one end of the water storage tank close to the first Y valve, and a counterweight block is detachably mounted on the bracket.

[0010] As a further solution of the present invention: the two-position five-way roller valve is provided with an air inlet interface and two air outlet interfaces, wherein the two air outlet interfaces are respectively connected to the first Y valve and the second Y valve by hoses, and the air inlet interface is connected to the compressed air pipeline through a hose.

[0011] As a further solution of the present invention: the two-position five-way roller valve controls the opening and closing of the first Y valve and the second Y valve.

[0012] As a further solution of the present invention: when the water in the compressed air pipeline enters the water storage tank, the first Y valve is opened and the second Y valve is closed, and the first Y valve on the water storage tank is in a high position and the second Y valve is in a low position.

[0013] As a further solution of the present invention: when the water in the compressed air pipeline stops entering the water storage tank, the first Y valve is closed and the second Y valve is opened, and the first Y valve on the water storage tank is in a low position and the second Y valve is in a high position.

[0014] As a further solution of the present invention: the water storage tank is a capsule-type metal storage tank with a capacity of 20L.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] Firstly, the present application arranges a water storage tank below the compressed air pipeline, and arranges a first Y valve and a second Y valve at both ends of the water storage tank respectively, one end of the first Y valve is connected to the compressed air pipeline, and a two-position five-way roller valve is arranged below the end of the water storage tank away from the first Y valve. The water storage tank can realize the high and low positions of both ends by using the lever principle, and the two-position five-way roller valve is used to automatically control the two valves, thereby realizing automatic drainage and control of the compressed air pipeline, solving the problem of the influence of water content in the system compressed air on the normal use of the underground compressed air equipment and the influence of accumulated water on the compressed air resistance; eliminating the need for manual regular drainage of the underground compressed air pipeline, saving labor costs; avoiding the waste of compressed air caused by manual drainage, and providing high-quality compressed air to the compressed air equipment on each mining face, avoiding the waste of resources caused by instantaneous reduction of compressed air pressure;

[0017] Secondly, this application sets a counterweight block on the water tank. In the initial state, the setting of the counterweight block makes the first Y valve of the water tank in a low position. Subsequently, under the action of gravity of continuous water injection, the first Y valve is located at a high position, and then the second Y valve is opened to drain water. Then, under the action of gravity, the tank relies on itself and the weight of the counterweight block to restore to its initial state. This is repeated to achieve automatic drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a pressure-free automatic drain device for compressed air pipelines in underground coal mines according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the first Y valve in the embodiment of the present utility model when it is in a high position;

[0020] Description of reference numerals:

[0021] 1. Compressed air pipeline; 2. Water storage tank; 21. Bracket; 22. Counterweight; 23. Water inlet; 24. Water outlet; 3. First Y-valve; 4. Second Y-valve; 5. Support; 6. Two-position five-way roller valve; 7. Connecting pipe. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] Reference Figure 1 and Figure 2 A pressure-free automatic drain device for a compressed air pipeline in an underground coal mine includes a compressed air pipeline 1, a water storage tank 2, a first Y valve 3, a second Y valve 4, a support 5, a two-position five-way roller valve 6 and a connecting pipe 7, wherein the water storage tank 2 is located below the compressed air pipeline 1.

[0024] Reference Figure 1 and Figure 2 The water tank 2 is a 20L capsule-type metal tank. A water inlet 23 is provided above one end of the water tank 2, and a water outlet 24 is provided at a lower position on the other end of the water tank 2. Both the water inlet 23 and the water outlet 24 are connected to the interior of the water tank 2. A first Y valve 3 is installed on the water inlet 23, and the first Y valve 3 is connected to the compressed air pipeline 1 through a connecting pipe 7. A second Y valve 4 is installed on the water outlet 24;

[0025] Furthermore, a support 5 is rotatably connected to the bottom of the water tank 2 and near the first Y-valve 3. The support 5 is a "U"-shaped structure that can support the water tank 2 as a whole, so that there is a certain space between the water tank 2 and the ground for lever adjustment of the water tank 2.

[0026] For ease of understanding and description, the end of the water tank 2 close to the first Y valve 3 in the figure is referred to as end A, and the end of the water tank 2 close to the second Y valve 4 is referred to as end B. It should be understood that this orientation setting is only for the convenience of description and understanding and cannot be understood as a limitation of the present invention.

[0027] Furthermore, a bracket 21 is installed at the A end of the water tank 2 near the first Y valve 3, wherein a counterweight 22 is installed on the bracket 21. Under the action of the counterweight 22, the water tank 2 can be driven to the A end of the water tank 2 when it is not in use (i.e., the state shown in 1). At this time, the first Y valve 3 is in a low position, and when the water in the compressed air pipeline 1 continues to enter the water tank 2, the water overflows the center line and enters the B end of the water tank 2 (i.e., flows to one end of the second Y valve 4). When the gravity of the B end is greater than the gravity of the counterweight 22 plus the water at the A end, the water tank 22 acts as a lever, so that the B end is in a low position and the A end is in a high position (i.e., Figure 2 and at this time under the action of the two-position five-way roller valve 6, open the second Y valve 4, the water in the water storage tank 2 is discharged to achieve hydrophobicity.

[0028] Reference Figure 1 and Figure 2 The two-position five-way roller valve 6 is installed below the water tank 2 near the B end. When the water tank 2 moves the lever and contacts the shaft head at the top of the two-position five-way roller valve 6, the two-position five-way roller valve 6 will be triggered to work.

[0029] Furthermore, an air inlet interface and two air outlet interfaces are provided on the two-position five-way roller valve 6, wherein the two air outlet interfaces are respectively connected to the first Y valve 3 and the second Y valve 4 by hoses, and the air inlet interface is connected to the compressed air pipeline 1 through a hose. The two-position five-way roller valve 6 controls the opening and closing of the first Y valve 3 and the second Y valve 4.

[0030] When the water in the compressed air pipeline 1 enters the water storage tank 2, the first Y valve 3 is opened and the second Y valve 4 is closed. The first Y valve 3 on the water storage tank 2 is in a high position and the second Y valve 4 is in a low position.

[0031] When the water in the compressed air pipeline 1 stops entering the water storage tank 2, the first Y valve 3 is closed and the second Y valve 4 is opened, and the first Y valve 3 on the water storage tank 2 is in a low position and the second Y valve 4 is in a high position.

[0032] It should be noted that the first Y-valve 3 and the second Y-valve 4 are both Y-type high-temperature automatic control valves.

[0033] The specific operating principles of this application are as follows:

[0034] Connection of drainage pipe: Install a three-way interface on the underground compressed air pipeline 1, install the first Y valve 3 and the hose on the three-way interface, connect the first Y valve 3 to the water inlet of the water storage tank 2, and install the second Y valve 4 on the water outlet 24 of the water storage tank 2;

[0035] Control the connection of the gas channel: After the hose is installed on the three-way interface, the hose is then connected to the air inlet interface of the two-position five-way roller mechanical valve 6, and the two air outlet interfaces of the two-position five-way roller valve 6 are respectively connected to the first Y valve 3 and the second Y valve 4 with hoses.

[0036] Workflow:

[0037] (1) Tank water storage process: In the initial state, the water inlet 23 of the water tank 2 is at a low position under the action of the counterweight 22, and the water outlet 24 is at a high position.

[0038] ① Pneumatic control circuit status: Air in compressed air line 1 passes through two-position five-way roller valve 6 and flows out of one of the outlet ports to first Y-valve 3, which is open. No air is flowing out of end B of water tank 2, and second Y-valve 4 is closed.

[0039] ② Water channel condition: With the first Y-valve 3 open and the second Y-valve 4 closed, the water tank 2 and the compressed air line 1 are connected, and the air pressure is consistent. The accumulated water in the compressed air line 1 flows into the water tank 2 by gravity.

[0040] Tank Draining Process: When the accumulated water in water tank 2 exceeds more than half of its volume, water tank 2 pivots around support 5, causing outlet pipe 22 to be in a low position and inlet pipe 22 to be in a high position. This triggers two-position five-way roller valve 6, closing the outlet port connected to first Y-valve 3 and opening the outlet port connected to second Y-valve 4. Consequently, first Y-valve 3 closes and second Y-valve 4 opens. Water tank 2 is disconnected from compressed air line 1, and drainage begins.

[0041] The storage tank returns to its initial state: After the water in the water storage tank 2 is drained, the water storage tank 2 returns to its initial state by its own weight and the weight of the counterweight 22, the two-position five-way roller valve 6 resets itself, the air sources of the two air outlet interfaces are switched, the air outlet interface on the two-position five-way roller valve 6 connected to the first Y valve 3 is opened, and the air outlet interface on the two-position five-way roller valve 6 connected to the second Y valve 4 is closed, and the water storage stage is entered again, and this cycle is repeated to achieve automatic pressure-free drainage operation.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pressure-free automatic drain device for compressed air pipelines in underground coal mines, characterized in that: The invention comprises a water storage tank (2), a first Y-valve (3), a second Y-valve (4) and a support (5); the first Y-valve (3) is connected to the upper part of one end of the water storage tank (2), and the first Y-valve (3) is connected to the compressed air pipeline (1); the second Y-valve (4) is connected to the lower part of the other end of the water storage tank (2), and is rotatably connected to the support (5) on the outer wall of the water storage tank (2) near the first Y-valve (3); A two-position five-way roller valve (6) is installed directly below the water storage tank (2) near the second Y valve (4).

2. The automatic pressure-free drain device for compressed air pipelines in underground coal mines according to claim 1, characterized in that: A bracket (21) is provided at one end of the water storage tank (2) close to the first Y valve (3), and a counterweight (22) is detachably mounted on the bracket (21).

3. The automatic pressure-free drain device for compressed air pipelines in underground coal mines according to claim 1, characterized in that: The two-position five-way roller valve (6) is provided with an air inlet interface and two air outlet interfaces, wherein the two air outlet interfaces are respectively connected to the first Y valve (3) and the second Y valve (4) via hoses, and the air inlet interface is connected to the compressed air pipeline (1) via a hose.

4. The automatic pressure-free drain device for compressed air pipelines in underground coal mines according to claim 3, characterized in that: The two-position five-way roller valve (6) controls the opening and closing of the first Y valve (3) and the second Y valve (4).

5. The automatic pressure-free drain device for compressed air pipelines in underground coal mines according to claim 3, characterized in that: When the water in the compressed air pipeline (1) enters the water storage tank (2), the first Y valve (3) is opened and the second Y valve (4) is closed, and the first Y valve (3) on the water storage tank (2) is in a high position and the second Y valve (4) is in a low position.

6. The automatic pressure-free drain device for compressed air pipelines in underground coal mines according to claim 5, characterized in that: When the water in the compressed air pipeline (1) stops entering the water storage tank (2), the first Y valve (3) is closed and the second Y valve (4) is opened, and the first Y valve (3) on the water storage tank (2) is in a low position and the second Y valve (4) is in a high position.

7. The automatic pressure-free drain device for compressed air pipelines in underground coal mines according to claim 1, characterized in that: The water storage tank (2) is a capsule-type metal storage tank with a capacity of 20L.

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