Automatic drainage device of coal mine gas extraction pipeline

Abstract

The utility model discloses an automatic drainage device of a coal mine gas extraction pipeline, and relates to the field of mine disaster prevention and control. Comprising a water inlet pipe and a water tank, one end of the water inlet pipe vertically extends into the water tank, the other end of the water inlet pipe is connected with a coal mine gas extraction pipeline, a cylindrical hole is formed near the tail end of the water inlet pipe located in the water tank, and a converter is installed in the cylindrical hole; when the device drains water, the converter is in a closed state, the water guide channel of the converter is in an open state, water in the water tank can seal a pipe opening in the tail end of the water inlet pipe, when the device drains water, the converter is in a closed state, the water inlet pipe is also sealed through closing of the converter, and therefore the air leakage phenomenon can be prevented, and the gas extraction negative pressure can be reduced. The device is simple in structure and easy to implement, accumulated water in an extraction pipeline can be removed in time, the defect that manual drainage is time-consuming and labor-consuming is overcome, the water inlet pipe can be sealed in time, the gas extraction efficiency is improved, and meanwhile the workload required by drainage is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of mine disaster prevention and control, and particularly relates to an automatic drainage device for a coal mine gas drainage pipeline. Background Technique

[0002] For high-gas mines, if gas drainage control measures are not taken, serious accidents such as gas explosions are very likely to occur. In order to reduce and eliminate the threat posed by mine gas to coal mine safety production, it is necessary to carry out necessary gas drainage underground. During the gas drainage process, due to the water content in the coal seam, water flow will be formed in the drainage pipeline, which will greatly consume the energy of the drained gas and reduce the gas drainage effect. Currently, the most widely used method in mines is to install multiple drainage outlets in the gas drainage pipeline. The drainage outlets are connected to the drainage pipe. When there is a large amount of water in the pipeline, the drainage valve is manually opened for drainage. Since it is necessary to drain water manually at regular intervals, problems such as untimely drainage, reduced gas drainage efficiency, and waste of human resources are likely to occur.

[0003] Therefore, it is necessary to design an automatic drainage device for a coal mine gas drainage pipeline to automatically drain the accumulated water in the gas drainage pipeline. Content of the Utility Model

[0004] In order to solve the problems of untimely drainage and waste of human resources caused by manual drainage of the mine gas drainage pipeline in the prior art, the utility model provides an automatic drainage device for a coal mine gas drainage pipeline, which can automatically drain the accumulated water in the gas drainage pipeline.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic drainage device for a coal mine gas drainage pipeline includes a water inlet pipe and a water tank. One end of the water inlet pipe vertically extends into the interior of the water tank, and the other end is connected to the coal mine gas drainage pipeline. A cylindrical hole is arranged near the end of the water inlet pipe located inside the water tank, and a converter is installed in the cylindrical hole;

[0007] The converter is integrally cylindrical. A water guiding channel is arranged along the height direction of the converter from the center of the bottom surface of the cylindrical converter. The length of the water guiding channel is the same as the diameter of the bottom surface of the converter, and the depth of the water guiding channel is the same as the diameter of the water inlet pipe;

[0008] The described automatic drainage device further includes a floating ball, a connecting rod, a pulling wire, a hinge connecting member, and a valve. The floating ball floats in the water tank. One end of the floating ball is connected to a vertically downward pulling wire. The connecting rod includes a first connecting rod and a second connecting rod. The first connecting rod is connected to the opposite end of the floating ball connected to the pulling wire. The second connecting rod is obliquely downward connected to the top end of the first connecting rod. A cross bar is provided at the connection of the first connecting rod and the second connecting rod. A connecting rod hole is provided on the cross bar. The second connecting rod passes through the connecting rod hole and is connected to a converter through a hinge connecting member. A drainage hole is provided at the bottom of the water tank. A guide rod is provided in the drainage hole. The other end of the pulling wire is connected to the valve. The opposite end of the valve connected to the pulling wire is connected to the guide rod.

[0009] Further, a sealing ring is provided at the connection of the converter and the cylindrical hole for sealing.

[0010] Further, the length of the water inlet pipe extending into the water tank is more than half of the height of the water tank.

[0011] Further, the floating ball is hollow, and the lifting of the connecting rod and the opening or closing of the valve are simultaneously controlled by the height change of the floating ball.

[0012] Further, the hinge connecting member is provided on the converter. When the water level in the water tank rises, the second connecting rod connected to the converter descends, causing the water guiding channel to be in a closed state. When the water level in the water tank drops, the second connecting rod connected to the converter rises, causing the water guiding channel to be in an open state.

[0013] Further, the converter is made of anti-corrosion rubber material.

[0014] Compared with the prior art, the present utility model brings the following beneficial technical effects:

[0015] The present utility model provides an automatic drainage device for a coal mine gas drainage pipeline. Through the mutual cooperation of a floating ball, a pulling wire, a first connecting rod, a second connecting rod, a valve, and a hinge connecting member, the water guiding channel of the converter can be switched to an open or closed state. When it is in the closed state, the converter can seal the water inlet pipe, prevent air leakage, and reduce the gas drainage negative pressure. When it is in the open state, the water in the water inlet pipe can flow into the water tank, and the water in the water tank can seal the pipe orifice end of the water inlet pipe extending into the water, also preventing air leakage.

[0016] The automatic drainage device provided by the utility model has a simple structure and is easy to implement. It can automatically drain water according to the amount of water in the water tank, can timely remove the accumulated water in the extraction pipeline, avoids the disadvantages of time-consuming and laborious manual drainage, can timely seal the water inlet pipe, improves the gas extraction efficiency, and greatly reduces the workload required for drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model with reference to the drawings:

[0018] Figure 1 It is a schematic structural view of the automatic drainage device of the present utility model when storing water.

[0019] Figure 2 It is a schematic structural view of the automatic drainage device of the present utility model when draining water.

[0020] Figure 3 It is a top view of the structure of the automatic drainage device of the present utility model.

[0021] Figure 4 is Figure 1 The partial enlarged front view of A in

[0022] Figure 5 is Figure 1 The partial enlarged side view of A in

[0023] Figure 6 is Figure 1 The partial enlarged top view of A in

[0024] Figure 7 It is the front view of the converter in the present utility model.

[0025] Figure 8 It is the side view of the converter in the present utility model.

[0026] Figure 9 It is the top view of the converter in the present utility model.

[0027] In the figure: 1, water inlet pipe; 2, water tank; 3, floating ball; 4, pull wire; 5, connecting rod; 6, hinge connecting piece; 7, converter; 8, water guiding channel; 9, valve; 10, drain hole; 11, guide rod; 12, cross bar; 13, sealing ring; 14, connecting rod hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present utility model provides an automatic drainage device for a coal mine gas extraction pipeline. In order to make the advantages and technical solutions of the present utility model clearer and more definite, the following further describes the present utility model with reference to specific embodiments.

[0029] Combined with Figures 1 to 3As shown in the figure, an automatic drainage device for a coal mine gas drainage pipeline of the present utility model includes a water inlet pipe 1, a water tank 2, a floating ball 3, a pull wire 4, a connecting rod 5, a hinge connecting piece 6, a converter 7, a water guiding channel 8, a valve 9, a drainage hole 10, a guiding rod 11 and a cross bar 12. One end of the water inlet pipe 1 vertically extends into the interior of the water tank 2, and the other end is connected to the coal mine gas drainage pipeline. The water in the coal mine gas drainage pipeline enters the interior of the water tank through the water inlet pipe. The water tank is in a cylindrical shape and can store a certain amount of water. When there is water in the water tank, the floating ball 3 floats in the water tank.

[0030] The main technical concept of the present utility model is to realize the automatic drainage of the coal mine gas drainage pipeline. Therefore, how to automatically pump out the water in the coal mine gas drainage pipeline and timely discharge it through the drainage hole 10 in the water tank is a main innovation point of the present utility model.

[0031] Specifically, a cylindrical hole is provided near the end of the water inlet pipe located inside the water tank 2, and a converter 7 is installed in the cylindrical hole; the converter 7 is used as a water guiding and blocking converter, combined with Figures 4 to 9 As shown in the figure, the converter is integrally cylindrical. A water guiding channel is provided along the height direction of the converter from the center of the bottom surface of the cylindrical converter. The length of the water guiding channel is the same as the diameter of the bottom surface of the converter, and the depth of the water guiding channel is the same as the diameter of the water inlet pipe; in order to improve the sealing performance, a sealing ring is provided at the installation position of the cylindrical hole and the converter to seal it. When the device stores water, the water guiding channel 8 of the converter 7 is in an open state, and the water in the water tank 2 can seal the pipe orifice of the water inlet pipe 1 extending into the water. When the device drains water, the water guiding channel 8 of the converter 7 is in a closed state, and the closing of the converter 7 also seals the water inlet pipe 1, so as to prevent air leakage and reduce the gas drainage negative pressure.

[0032] The floating ball floats in the water tank. One end of the floating ball is connected to a vertically downward pull wire. The connecting rod includes a first connecting rod and a second connecting rod. The first connecting rod is vertically upward, and the second connecting rod is inclined downward. The first connecting rod is connected to the opposite end of the floating ball connected to the pull wire; the second connecting rod is obliquely downward connected to the top end of the first connecting rod; a cross bar is provided at the connection position of the first connecting rod and the second connecting rod, and a connecting rod hole is provided on the cross bar. The second connecting rod passes through the connecting rod hole and is connected to the converter through a hinge connecting piece; by changing the height of the floating ball 3, the lifting and lowering of the connecting rod 5 and the opening or closing of the valve 9 are simultaneously controlled. The bottom of the water tank is provided with a drainage hole, and a guiding rod is provided in the drainage hole. The other end of the pull wire is connected to the valve, and the opposite end of the valve connected to the pull wire is connected to the guiding rod.

[0033] As a preference of the present utility model, the length of the water inlet pipe extending into the interior of the water tank is more than half of the height of the water tank.

[0034] Further, the floating ball is hollow, and the lifting of the connecting rod and the opening or closing of the valve are simultaneously controlled by the height change of the floating ball.

[0035] Further, the hinge connecting member is arranged on the converter; when the water level in the water tank rises, the second connecting rod connected to the converter descends, so that the water guiding channel is in a closed state; when the water level in the water tank drops, the second connecting rod connected to the converter ascends, so that the water guiding channel is in an open state.

[0036] Further, the converter is made of anti-corrosion rubber material.

[0037] The following describes the usage method of the above-mentioned automatic drainage device for a coal mine gas drainage pipeline as follows.

[0038] During the gas drainage process, the water in the drainage pipeline is discharged into the water tank 2 through the water inlet pipe 1. As the water level in the water tank 2 continuously rises, the floating ball 3 gradually rises under the action of buoyancy. The upward floating of the floating ball 3 causes the first connecting rod and the wire rope 4 connected to the floating ball 3 to move upward simultaneously. The rising of the connecting rod 5 connected to the floating ball 3 leads to the descending of the second connecting rod of the guide and water-blocking converter 7 through the hinge connecting member 6. The descending of the second connecting rod connected to the converter 7 causes the water guiding channel 8 to gradually rotate and close. When the water guiding channel is closed, it can seal the water inlet pipe 1 to prevent air leakage, reduce the negative pressure of gas drainage, and the valve 9 connected to the wire rope rises accordingly, and the drainage hole is gradually opened, and the water in the water tank 2 is discharged.

[0039] When the water level in the water tank 2 drops, the floating ball drops under the action of gravity, and the first connecting rod and the wire rope 4 connected to the floating ball 3 move downward accordingly. The descending of the first connecting rod connected to the floating ball 3 leads to the ascending of the second connecting rod of the converter 7 through the hinge connecting member 6. The ascending of the second connecting rod connected to the converter 7 causes the water guiding channel 8 to gradually rotate and open, and the water in the water inlet pipe 1 can flow into the water tank 2. The water in the water tank 2 can seal the pipe orifice of the water inlet pipe 1 extending into the water, also preventing air leakage and reducing the negative pressure of gas drainage, and the valve 9 connected to the wire rope descends accordingly, and the drainage hole 10 is gradually closed, completing the drainage work.

[0040] The parts not described in the present utility model can be realized by referring to the prior art.

[0041] It should be noted that any equivalent method or obvious variant method made by those skilled in the art under the teaching of this specification should be within the protection scope of the present utility model.

Claims

1. An automatic drainage device for a coal mine gas extraction pipeline, comprising a water inlet pipe and a water tank, wherein one end of the water inlet pipe vertically extends into the water tank, and the other end is connected to the coal mine gas extraction pipeline, characterized in that: A cylindrical hole is provided near the end of the water inlet pipe located inside the water tank, and a converter is installed in the cylindrical hole; The converter is cylindrical as a whole, and a water guide channel is arranged from the center of the bottom surface of the cylindrical converter along the height direction of the converter, the length of the water guide channel is the same as the diameter of the bottom surface of the converter, and the depth of the water guide channel is the same as the diameter of the water inlet pipe; The automatic drainage device also includes a floating ball, a connecting rod, a pull wire, an articulated connection and a valve. The floating ball floats in the water tank, one end of the floating ball is connected to the pull wire vertically downward, the connecting rod includes a first connecting rod and a second connecting rod, the first connecting rod is connected to the opposite end of the floating ball connected to the pull wire; the second connecting rod is connected obliquely downward to the top of the first connecting rod; a cross bar is provided at the connection between the first connecting rod and the second connecting rod, a connecting rod hole is provided on the cross bar, the second connecting rod passes through the connecting rod hole and is connected to the converter through a hinged connection; a drainage hole is provided at the bottom of the water tank, a guide rod is provided in the drainage hole, the other end of the pull wire is connected to the valve, and the opposite end of the valve connected to the pull wire is connected to the guide rod.

2. The automatic drainage device for coal mine gas extraction pipeline according to claim 1 is characterized in that: A sealing ring is provided at the connection between the converter and the cylindrical hole for sealing.

3. The automatic drainage device for coal mine gas extraction pipeline according to claim 1 is characterized in that: The length of the water inlet pipe extending into the water tank is more than half of the height of the water tank.

4. The automatic drainage device for coal mine gas extraction pipeline according to claim 1 is characterized in that: The floating ball is hollow, and the lifting and lowering of the connecting rod and the opening or closing of the valve are controlled simultaneously by the height change of the floating ball.

5. The automatic drainage device for coal mine gas extraction pipeline according to claim 1, characterized in that: The articulated connection is arranged on the converter; when the water level in the water tank rises, the second connecting rod connected to the converter descends so that the water guide channel is in a closed state; when the water level in the water tank drops, the second connecting rod connected to the converter rises so that the water guide channel is in an open state.

6. The automatic drainage device for coal mine gas extraction pipeline according to claim 1, characterized in that: The converter is made of corrosion-resistant rubber material.

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