Portable mining gas collecting device

Abstract

The utility model discloses a portable mining gas collecting device, which comprises a negative pressure sampler body, a gas inlet hose and a gas outlet hose, the negative pressure sampler body comprises a gas inlet hose and a gas outlet hose, and the gas inlet hose and the gas outlet hose are arranged side by side; the anti-falling pipe fitting is inserted into the inner side of the air inlet hose, and the other end of the anti-falling pipe fitting is connected with a beam pipe through a circular truncated cone with an enlarged outer diameter so as to prevent the beam pipe from falling off; according to the device, the beam tube and the sampling rubber balloon can be conveniently and rapidly installed through the anti-falling pipe fitting with the outer diameter of the pipe opening changing and the connecting hard pipe, the beam tube is not prone to falling off after being installed, the connecting firmness is good, and the device has the advantages of being simple in structure, low in manufacturing cost and convenient to carry.

Description

Technical Field

[0001] This utility model specifically relates to a portable mining gas collection device. Background Technology

[0002] Residual coal in goaf areas is prone to spontaneous combustion accidents. The ignition points within goaf areas are often concealed and difficult to locate, making it one of the major hazards affecting mine safety. Conventional detection techniques lack sufficient accuracy and are insufficient for detecting deep within goaf areas. The "three zones" of coal spontaneous combustion are one of the most effective methods to prevent spontaneous combustion in goaf areas. The width of the "three zones" is determined through on-site testing. When sampling gas concentration at the sampling site, gas samples are extracted from the goaf area using a bundled tube and then taken using a mine-use negative pressure gas sampler for practical verification.

[0003] In existing gas sampling devices, the outlet of the negative pressure pump hose and the inner diameter of the connection port of the round rubber balloon are basically the same, making the connection inconvenient. The inlet of the negative pressure pump hose and the inner diameter of the three-belt bundle tube are also basically the same, making the connection difficult and prone to detachment, resulting in air being drawn in and inaccurate gas collection. Therefore, we propose a portable mine gas collection device. Utility Model Content

[0004] The purpose of this invention is to provide a portable mining gas collection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a portable mine gas collection device, comprising:

[0006] The negative pressure sampler body includes an air inlet hose and an air outlet hose, which are arranged side by side.

[0007] An anti-detachment fitting is inserted into the inside of the air intake hose, and the other end of the anti-detachment fitting is connected to a bundle tube through a truncated cone with an enlarged outer diameter to prevent the bundle tube from falling off.

[0008] A rigid connecting tube is installed inside the outlet hose, and the other end of the rigid connecting tube is connected to a sampling rubber balloon.

[0009] Preferably, the anti-detachment fitting includes a straight tube, an anti-detachment end, and a plug-in end. The lower end of the straight tube is provided with a plug-in end with a reduced outer diameter, and the upper end of the straight tube has an anti-detachment end with an expanded outer diameter to cooperate with the bundled tube.

[0010] Preferably, the included angle between the straight pipe and the anti-detachment end is α, and the angle α is 100°.

[0011] ≤α≤170°.

[0012] Preferably, both the anti-disconnection end and the plug-in end are frustum-shaped.

[0013] Preferably, the connecting rigid pipe includes a rigid pipe and a connecting end, wherein the connecting end has a reduced outer diameter at both ends.

[0014] Preferably, the connecting end is frustum-shaped, and the rigid tube and the connecting end are integrally formed.

[0015] Preferably, the outer diameter of the rigid tube is larger than the inner diameter of the air outlet hose.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This patent avoids the inconvenience caused by the essentially identical inner diameter of the inlet hose and bundle tube, and the risk of the bundle tube falling off after connection, when connecting the inlet hose and the sampling rubber balloon. This device uses anti-detachment fittings with varying outer diameters and connecting rigid tubes to facilitate quick installation of the bundle tube and sampling rubber balloon. After installation, the bundle tube is less likely to fall off, and the connection is secure. This device has the advantages of simple structure, low manufacturing cost, and easy portability. In addition, the frustum-shaped inlet makes it easy to adapt to gas collection devices of different sizes, thus having a wide range of applications. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the anti-detachment pipe fitting of this utility model;

[0020] Figure 3 This is a cross-sectional view of the anti-detachment pipe fitting of this utility model;

[0021] Figure 4 This is a cross-sectional view of the connecting rigid tube structure of this utility model.

[0022] In the diagram: 1. Negative pressure sampler body; 2. Outlet hose; 3. Connecting rigid tube; 301. Rigid tube; 302. Connecting end; 4. Sampling rubber balloon; 5. Anti-detachment fitting; 501. Straight tube; 502. Anti-detachment end; 503. Insertion end; 6. Bundle tube; 7. Inlet hose. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution: a portable mine gas collection device, comprising:

[0025] The negative pressure sampler body 1 includes an air inlet hose 7 and an air outlet hose 2, which are arranged side by side.

[0026] The anti-detachment fitting 5 is inserted into the inside of the air intake hose 7, and the other end of the anti-detachment fitting 5 is connected to the bundle tube 6 through the enlarged outer diameter frustum to prevent the bundle tube 6 from falling off. The enlarged outer diameter facilitates the placement of the bundle tube 6 after installation, thereby improving the stability of the bundle tube 6 installation.

[0027] A connecting rigid tube 3 is located inside the air outlet hose 2, and the other end of the connecting rigid tube 3 is connected to a sampling rubber balloon 4, which facilitates quick connection by better inserting the connecting rigid tube 3 into one end of the sampling rubber balloon 4 and the other end of the air outlet hose 2.

[0028] In this embodiment, preferably, the anti-detachment fitting 5 includes a straight pipe 501, an anti-detachment end 502, and a plug end 503. The lower end of the straight pipe 501 is provided with a plug end 503 with a reduced outer diameter, and the upper end of the straight pipe 501 has an anti-detachment end 502 with an expanded outer diameter to cooperate with the bundle tube 6, so as to prevent the bundle tube 6 from falling off. At the same time, the reduced diameter plug end 503 can better cooperate with the air intake hose 7.

[0029] In this embodiment, preferably, the included angle between the straight tube 501 and the anti-detachment end 502 is α, and the angle of α is: 100°≤α≤170°, so as to better prevent the bundle tube 6 from slipping off the anti-detachment end 502.

[0030] In this embodiment, preferably, both the anti-detachment end 502 and the plug-in end 503 are frustoconical.

[0031] In this embodiment, preferably, the connecting rigid tube 3 includes a rigid tube 301 and a connecting end 302. The connecting end 302 has a reduced outer diameter at both ends, which facilitates the connection of the connecting rigid tube 3 to the air outlet hose 2 and the sampling rubber balloon 4 respectively, so as to complete the installation of the sampling rubber balloon 4.

[0032] In this embodiment, preferably, the connecting end 302 is frustum-shaped, and the rigid tube 301 and the connecting end 302 are integrally formed, which is convenient for manufacturing.

[0033] In this embodiment, preferably, the outer diameter of the rigid tube 301 is larger than the inner diameter of the air outlet hose 2, which facilitates better interference fit to prevent the rigid tube 301 from falling off the air outlet hose 2 and improves connection stability.

[0034] The working principle and usage process of this utility model are as follows: In use, insert the plug end 503 of one end of the straight tube 501 into the inside of the air inlet hose 7, and insert the connecting end 302 of one end of the connecting rigid tube 3 into the inside of the connecting end 302. Both the plug end 503 and the connecting end 302 are frustoconical in shape, which is easy to insert. They can be quickly connected by interference fit. Then, one end of the bundle tube 6 is matched with the anti-detachment end 502. The anti-detachment end 502, with its gradually expanding outer diameter, can effectively prevent the bundle tube 6 from falling off, thus improving the connection stability. In addition, the frustoconical connecting end 302 can be well inserted into the inside of one end of the sampling rubber balloon 4, which is convenient for the installation of the sampling rubber balloon 4 and easy for the sampling rubber balloon 4 to be replaced later. The operation is simple.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable mine gas collection device, characterized in that, Include: The negative pressure sampler body (1) includes air inlet hose (7) and air outlet hose (2) on it, and the air inlet hose (7) and air outlet hose (2) are arranged side by side; Anti-drop pipe (5) is inserted into the air inlet hose (7), and the other end of the anti-drop pipe (5) is connected with the binding tube (6) through the frustum with enlarged outer diameter to prevent the binding tube (6) from falling off; The connecting hard tube (3) is arranged inside the air outlet hose (2), and the other end of the connecting hard tube (3) is connected with the sampling rubber balloon (4).

2. A portable mine gas collection device according to claim 1, characterised in that: The anti-drop pipe (5) includes a straight pipe (501), an anti-drop end (502) and a plug-in end (503), the lower end of the straight pipe (501) is provided with the plug-in end (503) with reduced outer diameter, and the upper end of the straight pipe (501) has the anti-drop end (502) with enlarged outer diameter to cooperate with the binding tube (6).

3. A portable mine gas collection device according to claim 2, characterised in that: The included angle between the straight pipe (501) and the anti-drop end (502) is α, and the angle of α is: 100°≤α≤170°.

4. A portable mine gas collection device according to claim 2, wherein: The anti-drop end (502) and the plug-in end (503) are both frustum.

5. The portable mine gas collection device of claim 1, wherein: The connecting hard tube (3) includes a hard tube (301) and a connecting end (302), and the connecting end (302) has the connecting end (302) with reduced outer diameter at both ends.

6. A portable mine gas collection device according to claim 5, wherein: The connecting end (302) is frustum, and the hard tube (301) and the connecting end (302) are integrally formed.

7. A portable mine gas collection device according to claim 5, wherein: The outer diameter of the hard tube (301) is larger than the inner diameter of the air outlet hose (2).

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