Gas quantity monitoring device for coal mine gas control

Abstract

The utility model relates to the technical field of gas quantity monitoring, in particular to a gas quantity monitoring device for coal mine gas control, which comprises a three-way pipe body, a gas measuring instrument is arranged on the surface of the top of the three-way pipe body, the three-way pipe body is included, and an annular mounting groove is formed in the inner surface of the three-way pipe body. An annular mounting groove is formed in the three-way pipe body, the surface of the annular mounting groove is fixedly connected with the surface of the outer ring of a mounting ring, and the surface of the inner ring of the mounting ring is fixedly connected with an air compression fan. The gas measuring instrument is arranged on the surface of the top of the three-way pipe body, so that the amount of gas flowing in the three-way pipe body can be monitored through the gas measuring instrument, and coal dust in air with the monitored gas amount is filtered through the filter screen at the end of the three-way pipe body; the coal dust is prevented from entering the three-way pipe body to pollute the monitoring probe of the gas measuring instrument and influence the accurate monitoring data.

Description

Technical Field

[0001] The utility model relates to the technical field of gas volume monitoring, in particular to a gas volume monitoring device for coal mine gas control. Background Technique

[0002] The goaf in a coal mine refers to the cavities or voids left after the extraction of underground coal, coal gangue, etc. during coal mining operations. During coal mining, the goaf often poses hazards to the normal production of the coal mine. Moreover, with the rapid development of railways, during the construction of railway tunnels, some sections need to cross the coal mine goaf. Therefore, in order to ensure the traffic safety of railways and the production safety of coal mines, it is necessary to control the coal mine goaf.

[0003] For example, in the prior art, the gas monitoring device for coal mine goaf treatment with the patent application number CN220625903U. The air extracted into the detection box enters the exhaust main pipe through the extraction pipe and the exhaust branch pipe, and finally is discharged from the goaf through the exhaust main pipe. In this way, it can not only ensure that the detection of the air near other intake branch pipes is not affected, but also strengthen the air flow at the top of the goaf.

[0004] However, in the existing coal mine gas monitoring process, a gas monitor is required. However, if coal dust adheres to the surface of the gas monitor probe, it will affect the gas monitoring data. Therefore, it is necessary to filter the coal dust in the coal mine air during the gas monitoring process.

[0005] Therefore, we need a gas volume monitoring device for coal mine gas control to solve the problems of the existing gas volume monitoring in coal mine gas control and also realize the problem of dust prevention for the gas measuring instrument probe during the gas monitoring process. Content of the Utility Model

[0006] The purpose of the utility model is to provide a gas volume monitoring device for coal mine gas control to solve the problems of the existing gas volume monitoring in coal mine gas control and also realize the problem of dust prevention for the gas measuring instrument probe during the gas monitoring process as mentioned in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: a gas volume monitoring device for coal mine gas control, including a tee pipe body. A gas measuring instrument is arranged on the top surface of the tee pipe body. The inner surface of the tee pipe body is provided with an annular installation groove. The outer surface of the installation ring is fixedly connected to the surface of the annular installation groove. The inner surface of the installation ring is fixedly connected with an air compression blower. A filter screen is arranged at the end of the tee pipe body.

[0008] Preferably, the annular installation groove is arranged as an annular groove, and the radius dimension of the annular installation groove is equal to the outer radius dimension of the installation ring.

[0009] Preferably, an installation through groove is formed at the end of the tee pipe body. A filter screen fixing ring is arranged on the surface of the installation through groove. A filter screen is fixedly connected to the inner surface of the inner ring of the filter screen fixing ring. An integrally formed clamping block is arranged at the edge of the filter screen fixing ring. The surface of the clamping block is clamped to the surface of a hanging groove. The hanging groove is formed on the outer surface of the tee pipe body. The hanging groove and the installation through groove are communicated with each other. A buckling groove is formed on the outer surface of the filter screen fixing ring.

[0010] Preferably, a spring groove is formed inside the tee pipe body. A movable disc is movably connected to the surface of the spring groove. The end of a compression spring is fixedly connected to the surface of the movable disc. The other end of the compression spring abuts against the inner surface of the filter screen fixing ring. The radius dimension of the movable disc is equal to the radius dimension of the spring groove.

[0011] Preferably, the cross section of the spring groove is in a "convex" shape. There are three spring grooves, and the three spring grooves are arranged in a circular array along the center point of the installation through groove.

[0012] Preferably, the depth of the installation through groove is equal to the thickness dimension of the filter screen fixing ring.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: When the air compression blower is started, the air inside the tee pipe body can flow. By arranging a gas measuring instrument on the top surface of the tee pipe body, the gas measuring instrument can monitor the gas volume flowing inside the tee pipe body. The filter screen at the end of the tee pipe body filters the coal dust in the air for monitoring the gas volume, so as to prevent the coal dust from entering the inside of the tee pipe body and polluting the monitoring probe of the gas measuring instrument and affecting its accurate monitoring data. When the filter screen fixing ring is rotated on the surface of the installation through groove by reversing the rotation by buckling the buckling groove, the filter screen fixing ring can be detached from the end surface of the tee pipe body. Therefore, when the coal dust on the surface of the filter screen is filtered too much and blocks the air flow inside the tee pipe body, it is convenient to detach and replace the filter screen from the end of the tee pipe body. The filter screen fixing ring is installed on the surface of the installation through groove to play an extrusion effect; further solves the problem of gas volume monitoring in the existing coal mine gas treatment, and also realizes the problem of dust prevention for the probe of the gas measuring instrument during the gas monitoring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a top view schematic diagram of the overall structure of the present utility model;

[0016] Figure 3 is Figure 2 the structural sectional view at A-A in

[0017] Figure 4Schematic three - dimensional diagram of the tee - shaped pipe body of the present utility model;

[0018] Figure 5 Schematic connection diagram of the clamping block and the filter screen fixing ring;

[0019] Figure 6 is Figure 3 Enlarged schematic diagram at position A in

[0020] Figure 7 is Figure 4 Enlarged schematic diagram at position B in

[0021] In the figure: tee - shaped pipe body 1, gas measuring instrument 2, installation through - slot 3, annular installation groove 4, air compression fan 5, filter screen 6, installation ring 7, buckle groove 8, clamping block 9, spring groove 10, movable disk 11, compression spring 12, hanging groove 13, filter screen fixing ring 14. Specific implementation mode

[0022] In order to clearly and completely describe the purpose, technical solution of the present utility model and make its advantages more clear, the following further details the embodiments of the present utility model with reference to the attached drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of them, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present utility model.

[0023] Embodiment 1

[0024] Please refer to Figures 1 - 7 , the present utility model provides a technical solution: a gas volume monitoring device for coal mine gas control, including a tee - shaped pipe body 1. A gas measuring instrument 2 is arranged on the top surface of the tee - shaped pipe body 1. An annular installation groove 4 is opened on the inner surface of the tee - shaped pipe body 1. The outer surface of the installation ring 7 is fixedly connected to the surface of the annular installation groove 4. An air compression fan 5 is fixedly connected to the inner surface of the installation ring 7. A filter screen 6 is arranged at the end of the tee - shaped pipe body 1;

[0025] By opening an annular installation groove 4 on the inner surface of the tee - shaped pipe body 1, fixedly connecting the outer surface of the annular installation groove 4 to the outer surface of the installation ring 7, and then arranging an air compression fan 5 on the inner surface of the installation ring 7, when the air compression fan 5 is started, the air inside the tee - shaped pipe body 1 can flow. By arranging a gas measuring instrument 2 on the top surface of the tee - shaped pipe body 1, the gas volume flowing inside the tee - shaped pipe body 1 can be monitored through the gas measuring instrument 2. The coal dust in the air for monitoring the gas volume is filtered by the filter screen 6 at the end of the tee - shaped pipe body 1 to prevent the coal dust from entering the inside of the tee - shaped pipe body 1 and contaminating the monitoring probe of the gas measuring instrument 2 and affecting its accurate monitoring data.

[0026] Example 2

[0027] Refer to the appendix Figures 1 to 7 On the basis of Example 1, in order to facilitate the disassembly and replacement of the filter net 6 from the end of the three-way pipe body 1, an installation through groove 3 is opened at the end of the three-way pipe body 1. A filter net fixing ring 14 is arranged on the surface of the installation through groove 3. The inner ring surface of the filter net fixing ring 14 is fixedly connected with the filter net 6. An integrally formed clamping block 9 is arranged at the edge of the filter net fixing ring 14. The surface of the clamping block 9 is clamped on the surface of the hanging groove 13. The hanging groove 13 is opened on the outer surface of the three-way pipe body 1. The hanging groove 13 and the installation through groove 3 are communicated with each other. A buckling groove 8 is opened on the outer surface of the filter net fixing ring 14;

[0028] By fixedly connecting the inner ring surface of the filter net fixing ring 14 with the filter net 6, the filter net 6 can be stably positioned on the end face of the three-way pipe body 1. By clamping the surface of the hanging groove 13 with the surface of the clamping block 9, the filter net fixing ring 14 can be stably installed on the end face of the three-way pipe body 1. When the filter net fixing ring 14 is rotated on the surface of the installation through groove 3 by reversing the rotation by buckling the buckling groove 8, the filter net fixing ring 14 can be disassembled from the end face of the three-way pipe body 1. Therefore, when there is a lot of coal dust filtration on the surface of the filter net 6, which causes blockage of the internal air flow of the three-way pipe body 1, it is convenient to disassemble and replace the filter net 6 from the end of the three-way pipe body 1.

[0029] Example 3

[0030] Refer to the appendix Figures 1 to 7 On the basis of Example 2, in order to exert an extrusion effect on the installation of the filter net fixing ring 14 on the surface of the installation through groove 3, a spring groove 10 is opened inside the three-way pipe body 1. A movable disk 11 is movably connected to the surface of the spring groove 10. The end of a compression spring 12 is fixedly connected to the surface of the movable disk 11. The other end of the compression spring 12 abuts against the inner surface of the filter net fixing ring 14. The radius dimension of the movable disk 11 is equal to the radius dimension of the spring groove 10;

[0031] By opening a spring groove 10 inside the three-way pipe body 1, fixedly connecting the end of the movable disk 11 with the end of the compression spring 12, and then abutting the other end of the compression spring 12 against the inner surface of the filter net fixing ring 14, the back of the filter net fixing ring 14 is pushed by the elastic force of the compression spring 12, so as to exert an extrusion effect on the installation of the filter net fixing ring 14 on the surface of the installation through groove 3.

[0032] In actual use, an annular installation groove 4 is formed on the inner surface of the tee pipe body 1, and the surface of the annular installation groove 4 is fixedly connected to the outer ring surface of the installation ring 7. Then, an air compressor fan 5 is arranged on the inner ring surface of the installation ring 7. When the air compressor fan 5 is started, the air inside the tee pipe body 1 can circulate. A gas detector 2 is arranged on the top surface of the tee pipe body 1. Therefore, the gas amount flowing inside the tee pipe body 1 can be monitored through the gas detector 2. The coal dust in the air for monitoring the gas amount is filtered by the filter net 6 at the end of the tee pipe body 1 to prevent the coal dust from entering the inside of the tee pipe body 1 and polluting the monitoring probe of the gas detector 2, which affects its accurate monitoring data. The inner ring surface of the filter net fixing ring 14 is fixedly connected to the filter net 6, so that the filter net 6 can be firmly fixed on the end face of the tee pipe body 1. The surface of the hanging groove 13 is clamped with the surface of the clamping block 9, so that the filter net fixing ring 14 can be firmly installed on the end face of the tee pipe body 1. When the filter net fixing ring 14 is rotated in the reverse direction by buckling the buckle groove 8 on the surface of the installation through groove 3, the filter net fixing ring 14 can be detached from the end face of the tee pipe body 1. Therefore, when the coal dust on the surface of the filter net 6 filters too much and blocks the air circulation inside the tee pipe body 1, it is convenient to detach and replace the filter net 6 from the end of the tee pipe body 1. A spring groove 10 is formed inside the tee pipe body 1. The end of the movable disk 11 is fixedly connected to the end of the compression spring 12. Then, the other end of the compression spring 12 abuts against the inner surface of the filter net fixing ring 14. Therefore, the back of the filter net fixing ring 14 is pushed by the elastic force of the compression spring 12, so as to play an extrusion effect on the installation of the filter net fixing ring 14 on the surface of the installation through groove 3.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas volume monitoring device for coal mine gas control, a tee pipe body (1), a gas measuring instrument (2) is arranged on the top surface of the tee pipe body (1), including the tee pipe body (1), characterized in that, An annular installation groove (4) is formed on the inner surface of the tee pipe body (1). The surface of the annular installation groove (4) is fixedly connected to the outer ring surface of the installation ring (7). The inner ring surface of the installation ring (7) is fixedly connected with an air compressor fan (5). A filter screen (6) is arranged at the end of the tee pipe body (1).

2. The gas quantity monitoring device for coal mine gas control according to claim 1, characterized in that: The annular installation groove (4) is arranged in a ring shape, and the radius dimension of the annular installation groove (4) is equal to the outer ring radius dimension of the installation ring (7).

3. The gas volume monitoring device for coal mine gas control according to claim 1, characterized in that: An installation through groove (3) is formed at the end of the tee pipe body (1). A filter screen fixing ring (14) is arranged on the surface of the installation through groove (3). The inner ring surface of the filter screen fixing ring (14) is fixedly connected with a filter screen (6). An integrally formed clamping block (9) is arranged at the edge of the filter screen fixing ring (14). The surface of the clamping block (9) is clamped to the surface of a hanging groove (13). The hanging groove (13) is formed on the outer surface of the tee pipe body (1). The hanging groove (13) and the installation through groove (3) are communicated with each other. A buckling groove (8) is formed on the outer surface of the filter screen fixing ring (14).

4. The gas volume monitoring device for coal mine gas control according to claim 1, characterized in that: A spring groove (10) is formed inside the tee pipe body (1). A movable disc (11) is movably connected to the surface of the spring groove (10). The surface of the movable disc (11) is fixedly connected to the end of a compression spring (12). The other end of the compression spring (12) abuts against the inner surface of the filter screen fixing ring (14). The radius dimension of the movable disc (11) is equal to the radius dimension of the spring groove (10).

5. The gas quantity monitoring device for coal mine gas control according to claim 4, characterized in that: The cross section of the spring groove (10) is arranged in a "convex" shape. There are three spring grooves (10), and the three spring grooves (10) are arranged in a circular array along the center point of the installation through groove (3).

6. The gas volume monitoring device for coal mine gas control according to claim 3, characterized in that: The depth of the installation through groove (3) is equal to the thickness dimension of the filter screen fixing ring (14).

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