CN105351002B - A kind of differential automatic negative-pressure water drainage device - Google Patents

Abstract

The invention relates to a pressure difference type negative pressure automatic draining device, which is characterized in that it includes a tank body, and a partition device is connected in the tank body; the partition device divides the tank body into an upper tank body and a lower tank body; A water inlet pipe, a first negative pressure pipe and a first negative pressure balance pipe are arranged on the tank wall of the lower tank body; a second negative pressure pipe and a second negative pressure balance pipe are arranged on the tank wall of the lower tank body; A drainage pipe; the separation device includes a partition, and a drain is opened in the middle of the partition; a plug plate is connected to the bottom of the drain by rotation, and the plug is connected to a guide frame through a spring, and the guide frame is tightly connected with the partition. In the present invention, a partition device is arranged in the tank body, a water inlet pipe, a first negative pressure pipe and a first negative pressure balance pipe are arranged on the upper tank body, and a second negative pressure pipe and a second negative pressure balance pipe are arranged on the lower tank body. The balance pipe is provided with a drainage pipe at the bottom of the tank, so the pressure difference between the upper and lower tanks can be adjusted by opening and closing the valves on each pipeline, and then the storage and drainage of coal slime and water in the tank can be realized.

Description

A differential pressure negative pressure automatic water release device

technical field

The invention relates to a water discharge device, in particular to a differential pressure negative pressure automatic water discharge device.

Background technique

Coal mine gas drainage is the use of gas pumps or other drainage equipment to extract the high volume fraction of gas in the coal seam, and discharge the extracted high volume fraction gas to the ground or the mine's total return airway through the pipe network isolated from the roadway. Coal mine gas drainage is not only an important measure to reduce mine gas emission and prevent gas explosion, but also the extracted gas can be developed and utilized as an associated resource of coal. However, the existing coal mine gas drainage efficiency is low, which cannot meet the needs of use. The main reasons why it is difficult to improve the drainage efficiency are the problems of well pattern, hole sealing and water plugging. Among them, the problem of water blockage is extremely prominent in the process of on-site drainage. During the drainage process, the liquid water and coal slime in the coal strata inevitably flow into the drainage pipeline by their own weight and negative pressure. Due to the temperature difference effect, the pipeline The gaseous water in the water will also condense into liquid water. The increase of the water volume will cause the local effective section of the drainage pipeline to become smaller, and even block the drainage pipeline, seriously affecting the drainage effect. The key equipment to solve the problem of water blockage is drainer. However, the existing coal mine drainage system is relatively large, and the number of drains is large. The workload of the ventilation team workers to repair the clogged drains cannot meet the discharge requirements of the drains, and cannot fundamentally solve the problem of gas pipeline drainage.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a differential pressure negative pressure automatic water discharge device that can automatically discharge sewage and prevent clogging.

In order to achieve the above object, the present invention adopts the following technical solutions: a pressure difference type negative pressure automatic water release device, characterized in that: it includes a tank body, and a partition device is fastened in the tank body; the partition device will The tank body is divided into an upper tank body and a lower tank body; a water inlet pipe, a first negative pressure pipe and a first negative pressure balance pipe are arranged on the tank wall of the upper tank body; A second negative pressure pipe and a second negative pressure balance pipe are arranged on the wall; a drain pipe is arranged at the bottom of the tank body; the partition device includes a partition, and a drain is opened in the center of the partition; The bottom of the drain port is rotatably connected to a plug plate, and the top surface of the plug plate is connected to a guide frame through a spring, and the guide frame is fastened to the partition.

A water level gauge is arranged in the upper tank, and the water level gauge is electrically connected with an external controller.

An observation window is respectively arranged on the tank walls of the upper tank body and the lower tank body.

The water inlet pipe, the first negative pressure pipe, the first negative pressure balance pipe, the second negative pressure pipe, the second negative pressure balance pipe and the drain pipe are provided with explosion-proof electric Valves, each of the explosion-proof electric valves is electrically connected to the external controller.

The guide frame includes two horizontally spaced ribs, and a connecting rod is fastened between the two ribs.

The interlayer adopts a funnel-shaped structure.

The present invention has the following advantages due to the adoption of the above technical scheme: 1. The present invention is provided with a water inlet pipe, a first negative pressure pipe and a first negative pressure pipe on the tank wall of the upper tank body due to the fast connection of a partition device in the tank body. The pressure balance pipe is provided with a second negative pressure pipe and a second negative pressure balance pipe on the tank wall of the lower tank body, and a drain pipe is set at the bottom of the tank body, so the upper and lower tanks can be adjusted by opening and closing the valves on each pipeline. The pressure difference of the tank can realize the storage and drainage of the coal slime and water in the tank. 2. The separation device of the present invention is connected to a stopper plate by rotation at the bottom of the water outlet, and a guide frame is connected with a spring on the top surface of the stopper plate, and the guide frame is tightly connected with the interlayer, so the guide frame and the spring limit the stopper plate. The movement direction and range of movement of the plate, and ensure that the plug plate at the drain is tightly closed under the action of pressure difference to prevent water and air leakage. The invention can be widely used in the drainage and slag discharge process of coal mine gas drainage pipelines.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the structural representation of the separating device of the present invention;

Fig. 3 is a schematic structural view of the guide frame of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in FIG. 1 , the present invention includes a tank body 1 , and a partition device 2 arranged horizontally is fastened in the middle of the tank body 1 . The partition device 2 divides the tank body 1 into an upper tank body 3 and a lower tank body 4 . A water inlet pipe 5 , a first negative pressure pipe 6 and a first negative pressure balance pipe 7 are arranged on the tank wall of the upper tank body 3 . A second negative pressure pipe 8 and a second negative pressure balance pipe 9 are arranged on the tank wall of the lower tank body 4 . A drainpipe 10 with a large diameter is arranged at the bottom of the tank body 1 . As shown in Figure 2, the partition device 2 includes a funnel-shaped interlayer 11, and a water outlet 12 is provided at the center of the interlayer 11, and a plug plate 13 is connected to the bottom of the water outlet 12 by rotation, and on the top of the plug plate 13 A guide frame 15 is connected to the surface through a spring 14 , and the guide frame 15 is tightly connected with the compartment 11 to limit the movement direction and range of movement of the plug plate 13 .

In the above embodiment, an observation window 16 can be respectively provided on the tank walls of the upper tank body 3 and the lower tank body 4 for observing the discharge of coal slime and water in the tank body 1 .

In the above-mentioned embodiment, a water level gauge 17 is set in the upper tank body 3 for measuring the water level of the coal slime and water accumulated in the upper tank body 3, and the water level gauge 17 is electrically connected with an external controller to transmit the data to the outside controller.

In the above embodiment, explosion-proof electric valves are provided on the water inlet pipe 5, the first negative pressure pipe 6, the first negative pressure balance pipe 7, the second negative pressure pipe 8, the second negative pressure balance pipe 9 and the drain pipe 10. (not shown in the figure), each explosion-proof electric valve is electrically connected to an external controller, and is used to brake the opening and closing of each pipeline.

In the above embodiment, as shown in FIG. 3 , the guide frame 15 includes two ribs 151 arranged at intervals horizontally and fastened to the partition 11 , and a connecting rod 152 is fastened between the two ribs 151 .

When the present invention is working, at first the first negative pressure pipe 6 and the second negative pressure pipe 8 are respectively connected to the coal mine gas drainage pipeline, and the valves of the water inlet pipe 5 and the first negative pressure pipe 6 are opened to make the upper tank body 3 Connect with the coal mine gas drainage pipeline to form a negative pressure environment. Then, close the valve of the second negative pressure pipe 8 of the lower tank body 4, open the valve of the second negative pressure balance pipe 9, and make the lower tank body 4 pass into the atmosphere. Because the pressure in the lower tank body 4 is higher than the pressure in the upper tank body 3, the pressure difference will cause the plug plate 13 and the drain port 12 to be tightly closed to prevent water and air leakage. At this time, the coal slime and water are accumulated in the upper tank body 3 through the water inlet pipe 5. When the accumulated coal slime and water reach a high level, the water level gauge 17 will send a signal to brake the water inlet pipe 5, the first negative pressure pipe 6 and the second negative pressure pipe. The valves of the two negative pressure balance pipes 9 are closed, and the valves of the first negative pressure balance pipe 7 and the second negative pressure pipe 8 are opened. At this moment, the pressure in the upper tank body 3 is atmospheric pressure, and in the lower tank body 4, it is a negative pressure environment. Affected by the pressure difference, the plug plate 13 is opened, and at the same time, under the action of the spring tension and the guide frame 15, the plug plate 13 avoids the excessive opening range of the plug plate 13, resulting in the plug plate 13 not being able to return in time, so that the upper and lower boxes are in a state of passage. If the time is too long, the airtightness will not be tight, so that external gas will enter the gas drainage pipeline, which will affect the extraction efficiency. A large amount of coal slime and water deposited and agglomerated for a long time are sucked in the lower tank body 4 through the drain port 12 . When the water level drops to a low level, the water level gauge 17 sends a signal to brake the valves of the second negative pressure pipe 8 and the first negative pressure balance pipe 7 to close, and the water inlet pipe 4, the first negative pressure pipe 5 and the second negative pressure balance pipe 9 The valve of the valve is opened, and the pressure difference makes the plug plate 13 and the drain port 12 tightly closed again, and enters the water accumulation state. Simultaneously, the valve of the drain pipe 10 is opened to discharge the evenly mixed coal slime and water, realizing drainage and slag discharge based on the principle of differential pressure.

Above-mentioned each embodiment is only for illustrating the present invention, wherein the structure of each component, connection mode etc. all can be changed to some extent, every equivalent conversion and improvement carried out on the basis of the technical solution of the present invention, all should not be excluded from the present invention. outside the scope of protection of the invention.

Claims (6)

1. a kind of differential automatic negative-pressure water drainage device, it is characterised in that：It includes a tank body, is fastenedly connected in the tank body One separating device；The tank body is divided into upper tank body and lower tank by the separating device；Set on the tank skin of the upper tank body There are water inlet pipe, the first negative tube and the first negative-pressure balancing pipe；The second negative tube and are provided with the tank skin of the lower tank Two negative-pressure balancing pipes；In the tank base, one drainpipe is set；The separating device includes an interlayer, in the interlayer The heart offers a discharge outlet；A seben is connected in the lower rotation of the discharge outlet, the top surface of the seben is connected by spring One leading truck, the leading truck is fastenedly connected with the interlayer.

2. a kind of differential automatic negative-pressure water drainage device as claimed in claim 1, it is characterised in that：Set in the upper tank body A water-level gauge is put, the water-level gauge is electrically connected with a peripheral control unit.

3. a kind of differential automatic negative-pressure water drainage device as claimed in claim 1 or 2, it is characterised in that：In the upper tank body An observation window is set respectively with the tank skin of the lower tank.

4. a kind of differential automatic negative-pressure water drainage device as claimed in claim 2, it is characterised in that：In the water inlet pipe, institute State the first negative tube, the first negative-pressure balancing pipe, second negative tube, the second negative-pressure balancing pipe and the drainpipe On be provided with explosion-proof electric valve, each explosion-proof electric valve is electrically connected with the peripheral control unit.

5. a kind of differential automatic negative-pressure water drainage device as claimed in claim 1 or 2, it is characterised in that：The leading truck bag Two flanges being horizontally spaced about are included, connecting rod is fastenedly connected between flange described in two.

6. a kind of differential automatic negative-pressure water drainage device as claimed in claim 1 or 2, it is characterised in that：The interlayer is used Funnel-shaped structure.