Water returning and retaining sealing device for coal mine

Abstract

The utility model provides a coal mine water returning and retaining sealing device which solves the technical problem that an existing coal mine water returning and retaining sealing device is prone to causing blockage of a water returning device. Comprising a housing; the first pipeline is arranged in the shell and comprises a first main pipe and a first auxiliary pipe which are communicated, the first main pipe is provided with a telescopic assembly, the telescopic assembly can stretch out and draw back in the axial direction of the first main pipe so that the first main pipe and the first auxiliary pipe can be communicated or isolated, and a separation net is arranged in the first pipeline; the second pipeline is arranged in the shell and connected to the front portion of the partition net of the first pipeline in the water flow direction, a water flow sensor is arranged in the second pipeline, the second pipeline comprises a partition plate arranged at the inlet end of the second pipeline, and the partition plate is hinged to the side wall of the second pipeline through a first hinge shaft and can rotate around the first hinge shaft; and the water flow sensor is electrically connected with the central processing device. Drainage is not affected under the condition that a main pipeline is blocked, meanwhile, the blocking condition can be found in time, and replacement is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of water retaining and sealing devices, and particularly relates to a coal mine water backflow and water retaining and sealing device. Background Art

[0002] Due to large-scale mining in recent decades, coal resources in China have gradually become scarce. Most coal mines have shifted to deep or lower coal seam mining. Deep wells and lower coal seams are threatened by high-pressure floor water inrush, which poses a serious threat to the safe production of coal mines.

[0003] During the process of coal mine mining, a sealing wall is set in the coal mine underground, and a water diversion groove is opened at the bottom end of the sealing wall, and a water backflow device is inserted into it. For example, in the prior art CN202391449U, a water backflow device for a coal mine underground sealing wall. In the existing water backflow device, in order to isolate residues, a partition net is set inside the water backflow device. For example, in the prior art CN214035786U, a water backflow device for a coal mine underground sealing wall. The setting of the partition net is likely to cause blockage of the water backflow device, and it is likely to affect the overall use effect of the device in case of failure to detect the blockage in time. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a coal mine water backflow and water retaining and sealing device to solve the technical problem that in the current use process of the coal mine water backflow and water retaining and sealing device, the internal setting of a partition net is likely to cause blockage of the water backflow device.

[0005] The embodiments of the utility model are realized through the following technical solutions:

[0006] A coal mine water backflow and water retaining and sealing device includes a housing, a first pipeline and a second pipeline;

[0007] The housing is provided with a receiving cavity;

[0008] The first pipeline is arranged inside the housing and includes a first main pipe and a first sub-pipe which are connected. The first main pipe is provided with a telescopic component which can telescopically move along the axial direction of the first main pipe to connect or isolate the first main pipe and the first sub-pipe. A partition net is arranged inside the first pipeline;

[0009] The second pipeline is arranged inside the housing and is connected in front of the partition net of the first pipeline along the water flow direction. A water flow sensor is arranged inside the second pipeline. The second pipeline includes an isolation plate arranged at its inlet end. The isolation plate is hinged to the side wall of the second pipeline through a first hinge shaft, and the isolation plate can rotate along the first hinge shaft to connect the first pipeline and the second pipeline. The water flow sensor is electrically connected to a central processing device.

[0010] In some embodiments, the second pipe further includes a spring, one end of the spring is connected to the isolation plate, and the other end is connected to the wall of the second pipe.

[0011] In some embodiments, the first main pipe is isolated from the outside, the first sub-pipe is in communication with the outside, and the second pipe is in communication with the outside.

[0012] In some embodiments, the telescopic assembly includes a spring and a baffle connected to each other, and the baffle is provided at the end of the spring.

[0013] In some embodiments, the water outlet end of the second pipe is provided above the water outlet end of the first pipe.

[0014] In some embodiments, multiple layers of separation nets are provided and are arranged at intervals along the axial direction of the first pipe.

[0015] In some embodiments, an airbag is provided on the outer wall of the housing, and the airbag includes an air inlet.

[0016] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects:

[0017] (1) The first pipe and the second pipe are provided. The second pipe is connected in front of the separation net of the first pipe along the water flow direction. Under the condition that the separation net is blocked, the pressure in front of the separation net increases due to the blockage, driving the isolation plate to rotate along the first hinge axis and driving the spring to be compressed, so that the first pipe and the second pipe are connected, and the water flows out through the second pipe, avoiding the situation that the overall device cannot operate due to blockage.

[0018] (2) A water flow sensor is provided in the second pipe to timely identify the water flow in the second pipe, and then judge whether a blockage occurs, which is convenient for timely replacing the coal mine backwater water blocking and airtight device.

[0019] (3) A telescopic assembly is provided in the first pipe to connect or isolate the first main pipe and the first sub-pipe. When the device is working normally, the water flow pushes the telescopic assembly to be compressed, so that the first main pipe and the first sub-pipe are connected, and the water flows out along the first sub-pipe. Under the condition that the device does not perform drainage operation, the spring is in a stretched state, and the first main pipe and the first sub-pipe are isolated to prevent harmful gas from flowing back.

[0020] (4) An airbag is provided outside the housing, and the installation is carried out by the expansion or contraction of the airbag, replacing the previous plug-in method, and the installation and disassembly are more convenient.

[0021] (5) The present utility model is reasonably designed, has a simple structure and good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the attached drawings required for the embodiments. It should be understood that the following attached drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0023] Figure 1 Schematic diagram of the coal mine water reverse and water blocking airtight device provided by the embodiment of the present invention in the extended state of the telescopic assembly;

[0024] Figure 2 Schematic diagram of the coal mine water reverse and water blocking airtight device provided by the embodiment of the present invention in the compressed state of the telescopic assembly;

[0025] Figure 3 Side view of the coal mine water reverse and water blocking airtight device provided by the embodiment of the present invention.

[0026] Icon:

[0027] 111. First branch segment A; 112. First branch segment B; 113. First branch segment C; 114. Partition net; 120. First auxiliary pipe; 130. Telescopic assembly;

[0028] 210. Second branch segment A; 220. Second branch segment B; 230. Water flow sensor; 240. Isolation board;

[0029] 300. Airbag. Specific embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the attached drawings here can be arranged and designed in various different configurations.

[0031] Embodiment

[0032] The embodiment of the present application provides a coal mine water reverse and water blocking airtight device to ensure drainage without being affected when the main pipeline is blocked, and at the same time, the blockage situation can be detected in time for easy replacement.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 3 , the coal mine water reverse and water blocking airtight device provided by the embodiment of the present application includes a housing, a first pipeline, and a second pipeline;

[0034] The housing is provided with a receiving cavity;

[0035] The first pipeline is arranged inside the housing and includes a first main pipe and a first sub-pipe 120 that are connected and communicate with each other. The first main pipe is provided with a telescopic assembly 130. The telescopic assembly 130 can telescopically move along the axial direction of the first main pipe to connect or isolate the first main pipe and the first sub-pipe 120. A partition net 114 is arranged inside the first pipeline. In some embodiments, the first main pipe includes an abutting portion. When the telescopic assembly 130 extends, the telescopic assembly 130 abuts against the abutting portion, and the first main pipe and the first sub-pipe 120 are isolated. When the telescopic assembly 130 compresses, the telescopic assembly 130 is spaced from the abutting portion, and the first main pipe and the first sub-pipe 120 communicate with each other. In some embodiments, the first main pipe includes a first branch section A111, a first branch section B112, and a first branch section C113 that are sequentially connected along the water flow direction. The partition net 114 is arranged in the first branch section A111, and the telescopic assembly 130 is arranged in the first branch section C113. The first branch section A111, the first branch section B112, and the first branch section C113 are arranged at an angle to each other. In some embodiments, the first branch section A111 communicates with the outside. In some embodiments, the first sub-pipe 120 is connected to the first branch section C113. The first sub-pipe 120 includes a first vertical pipe and a first horizontal pipe that are arranged at an angle. In some embodiments, the first vertical pipe is connected to the first branch section C113 and is perpendicular to the first branch section C113;

[0036] The second pipeline is arranged inside the housing and is connected in front of the partition net 114 of the first pipeline along the water flow direction. A water flow sensor 230 is arranged inside the second pipeline. The second pipeline includes a partition plate 240 arranged at its inlet end. The partition plate 240 is hinged to the side wall of the second pipeline through a first hinge shaft. The partition plate 240 can rotate along the first hinge shaft to connect the first pipeline and the second pipeline. The water flow sensor 230 is electrically connected to the central processing device. The water flow data monitored by the water flow sensor 230 is transmitted to the central processing device. The central processing device processes the water flow data. When the water flow data increases significantly, it is determined that the partition net 114 is blocked, and the operator is reminded to go for treatment. In some embodiments, the first branch section A111 is connected to the second pipeline. The inlet of the second pipeline is located between the inlet of the first branch section A111 and the partition net 114 and is connected above the first branch section A111. When the partition net 114 is not blocked, the water flow cannot automatically enter the second pipeline due to the action of gravity, avoiding affecting the measurement result. In some embodiments, the second pipeline includes a second branch section A210 and a second branch section B220 that are arranged at an angle. The second branch section A210 is connected to the first branch section A111 and is arranged at an angle to it. In some embodiments, the second branch section A210 is connected to the first branch section A111 and is arranged at 90 degrees to it. In some embodiments, the water flow sensor 230 is arranged inside the second branch section B220, and the water flow sensor 230 is close to the outlet of the second branch section B220.

[0037] In some embodiments, the second pipeline further includes a spring. One end of the spring is connected to the partition plate 240, and the other end is connected to the wall of the second pipeline to further increase the stability of the partition plate 240 and prevent it from falling in the stationary state.

[0038] In some embodiments, the first main pipe is isolated from the outside, the first auxiliary pipe 120 is in communication with the outside, and the second pipeline is in communication with the outside.

[0039] In some embodiments, the telescopic assembly 130 includes a connected spring and a baffle plate, and the baffle plate is disposed at the end of the spring.

[0040] In some embodiments, the water outlet end of the second pipeline is disposed above the water outlet end of the first pipeline, so that water flow does not enter the second pipeline when the separation net 114 is not blocked, that is, in the normal working state.

[0041] In some embodiments, multiple layers of separation nets 114 are provided and are spaced along the axial direction of the first pipeline to increase the isolation effect.

[0042] In some embodiments, an airbag 300 is provided on the outer wall of the outer shell, and the airbag 300 includes an air inlet.

[0043] The following is a detailed description of the usage process of the coal mine backwater and water-blocking airtight device of the present application:

[0044] During drainage, when the separation net 114 is not blocked, water flows through the first branch section A111 and the first branch section B112 into the first branch section C113. The telescopic assembly 130 in the first branch section C113 is compressed so that the first main pipe and the first auxiliary pipe 120 are in communication, and water flows into the first auxiliary pipe 120 and is discharged from the first auxiliary pipe 120; when the separation net 114 is blocked, the pressure of the water flow in the first branch section A111 increases, pushing the partition plate 240 to rotate along the first hinge axis so that the first branch section A111 and the second branch section A210 are in communication, and the water flow is discharged through the first branch section A111, the second branch section A210 and the second branch section B220. The water flow sensor 230 monitors a large change in the water flow rate and reminds the operator to handle it in time;

[0045] When not draining water, the telescopic assembly 130 in the first branch section C113 extends so that the first main pipe and the first auxiliary pipe 120 are isolated, and the partition plate 240 in the second pipeline is in a stationary position so that the first pipeline and the second pipeline are isolated, jointly acting to prevent the backflow of harmful gases.

[0046] The coal mine backwater and water-blocking airtight device of the present application has at least the following advantages:

[0047] (1) Set up a first pipeline and a second pipeline. The second pipeline is connected in front of the partition net of the first pipeline along the water flow direction. Under the condition that the partition net is blocked, the pressure in front of the partition net increases due to the blockage, driving the isolation plate to rotate along the first hinge axis and compressing the driving spring so that the first pipeline and the second pipeline are connected, and the water flows out through the second pipeline, avoiding the failure of the overall device caused by blockage.

[0048] (2) Install a water flow sensor in the second pipeline to timely identify the water flow in the second pipeline, and then judge whether blockage occurs, which is convenient for timely replacing the coal mine backwater water-blocking and airtight device.

[0049] (3) Install a telescopic component in the first pipeline to connect or isolate the first main pipe and the first sub-pipe. Under normal working conditions of the device, the water flow pushes the telescopic component to compress so that the first main pipe and the first sub-pipe are connected, and the water flows out along the first sub-pipe. Under the condition that the device does not perform drainage operation, the spring is in the extended state, and the first main pipe and the first sub-pipe are isolated to prevent harmful gas from flowing back.

[0050] (4) Install an airbag outside the outer shell and install it by expanding or shrinking the airbag, replacing the previous plug-in method, which is more convenient for installation and disassembly.

[0051] (5) The design of the utility model is reasonable, the structure is simple, and the practicability is good.

[0052] The above are only the preferred embodiments of the utility model and are not used to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.

Claims

1. A closed device for water-repelling and water-blocking in coal mines, characterized in that: include: A housing having a receiving cavity; A first pipe is arranged in the housing, comprising a first main pipe and a first auxiliary pipe which are connected to each other, wherein the first main pipe is provided with a telescopic assembly, and the telescopic assembly can be telescoped along the axial direction of the first main pipe so as to connect or isolate the first main pipe and the first auxiliary pipe, and a partition net is arranged in the first pipe; The second pipe is arranged in the shell and connected to the front of the partition net of the first pipe along the water flow direction. A water flow sensor is arranged inside the second pipe. The second pipe includes an isolation plate arranged at its inlet end. The isolation plate is hinged to the side wall of the second pipe through a first hinge axis. The isolation plate can be rotated along the first hinge axis to connect the first pipe and the second pipe. The water flow sensor is electrically connected to the central processing unit.

2. The closed device for water-repelling and water-blocking in coal mines according to claim 1, characterized in that: The second pipe also includes a spring, one end of which is connected to the isolation plate, and the other end of which is connected to the wall of the second pipe.

3. The closed device for water-repelling and water-blocking in coal mines according to claim 1, characterized in that: The first main pipe is isolated from the outside, the first sub-pipe is communicated with the outside, and the second pipe is communicated with the outside.

4. The closed device for water-repelling and water-blocking in coal mines according to any one of claims 1 to 3, characterized in that: The telescopic assembly comprises a spring and a baffle which are connected to each other, and the baffle is arranged at the end of the spring.

5. The closed device for water-repelling and water-blocking in coal mines according to any one of claims 1 to 3, characterized in that: The water outlet end of the second pipe is arranged above the water outlet end of the first pipe.

6. The closed device for water-repelling and water-blocking in coal mines according to any one of claims 1 to 3, characterized in that: The partition net has multiple layers and is arranged at intervals along the axial direction of the first pipe.

7. The closed device for water-repelling and water-blocking in coal mines according to any one of claims 1 to 3, characterized in that: An air bag is arranged on the outer wall of the shell, and the air bag comprises an air inlet.

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