A gas detection device for coal mine safety operation

Abstract

The utility model discloses a gas detection device for coal mine safety operation, including gas walking stick body still includes: ring clamp, its setting in gas walking stick body, ring clamp is provided with a limiting portion, and the first ring buckle and the second ring buckle of joint cooperation are set up on the limiting portion, first ring support, its setting in first ring buckle, second ring support, its setting in second ring buckle. The utility model provides a gas detection device for coal mine safety operation, and the limiting portion of ring clamp on gas walking stick body will first ring buckle and second ring buckle joint cooperation, and first ring support and second ring support are synchronous and are combined and are circular ring state, and the circular ring that the first ring support and second ring support of the utility model are combined, and extrusion pressure is produced through with the contact of rubber tube outer surface, and the radial constraint is formed to rubber tube, and the connecting area of rubber tube and gas walking stick body can be directly extruded by the constraint, and rubber tube is forced to be more closely attached on the communicating port of gas walking stick, and the sealing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, and more specifically to a gas detection device for safe operation in coal mines. Background Technology

[0002] As is known, the optical interference methane detector is a device used for coal mine gas detection. It consists of a gas path system, an optical path system, and an observation system. After a gas sample is collected by a gas cane, it is transported to the detector through a rubber tube. During this process, the sample first passes through a carbon dioxide absorption tube to remove carbon dioxide and prevent it from interfering with the gas concentration detection. Then, it enters the core detection part of the detector to measure the gas concentration.

[0003] The specific operating steps of the optical interference methane detector are as follows: First, check the instrument; during on-site testing, connect the rubber tube to the gas cane, insert the cane probe into the area to be tested, repeatedly squeeze the bladder to collect gas samples, and after the gas stabilizes, read the gas concentration value corresponding to the interference fringes through the eyepiece. After reading the value, the testing location must be accurately recorded. After the testing work is completed, clean the instrument and store it to ensure the accuracy of subsequent use.

[0004] The aforementioned gas cane is used as a gas detection tool in coal mines. During detection, it is used in conjunction with the rubber hose connected to the carbon dioxide absorption device. Before and after each gas detection operation, the rubber hose needs to be connected and disconnected from the gas cane, which causes the hose opening and inner wall to gradually wear down. Long-term wear will lead to a decrease in the sealing performance of the connection, resulting in gas leakage. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, one objective of this utility model is to provide a gas detection device for safe operation in coal mines, so as to solve the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides a gas detection device for safe coal mine operations, comprising a gas cane body and further comprising: a ring clamp disposed on the gas cane body; a limiting part provided on the ring clamp, wherein a first ring buckle and a second ring buckle are provided on the limiting part for engaging; a first ring frame disposed on the first ring buckle; and a second ring frame disposed on the second ring buckle; when the first ring buckle and the second ring buckle are engaged, the first ring frame and the second ring frame are combined to abut against the rubber tube.

[0007] Preferably, the limiting part is a ring structure, and a positioning part is provided on the limiting part.

[0008] Preferably, both the first ring frame and the second ring frame are composed of a semi-circular ring and an L-shaped connecting rod connected to the semi-circular ring, and each L-shaped connecting rod is engaged with each positioning part.

[0009] Preferably, the first ring buckle is provided with a plurality of protrusions, each of which is specifically a cylindrical structure.

[0010] Preferably, the second ring buckle has a groove that engages with each of the protrusions.

[0011] Preferably, each of the slots is a circular hole structure that is adapted to each of the protrusions.

[0012] Preferably, both the first ring frame and the second ring frame are provided with ring grooves, and each ring groove is specifically a semi-circular ring structure.

[0013] Preferably, each of the annular grooves is provided with a sealing gasket, and each of the sealing gaskets is specifically a semi-circular ring structure.

[0014] Preferably, the first ring frame has protrusions arranged opposite each other, and the second ring frame has grooves that engage with each of the protrusions.

[0015] Preferably, the gas cane body is provided with an extension and a communication port.

[0016] In the above technical solution, the gas detection device for safe operation in coal mines provided by this utility model has the following beneficial effects: After the rubber hose is connected to the gas cane body, the first ring buckle and the second ring buckle are engaged and connected by the limiting part of the ring clamp on the gas cane body. After the two are engaged and connected, the first ring frame and the second ring frame synchronously merge into a circular state, such as... Figure 4 As shown in the diagram, the ring formed by the merging of the first and second ring frames of the device generates a squeezing force through contact with the outer surface of the rubber tube, creating a radial constraint on the rubber tube. This constraint directly squeezes the connection area between the rubber tube and the gas cane body, forcing the rubber tube to fit more tightly against the gas cane's opening, improving the sealing effect and preventing gas leakage. Secondly, the ring-shaped contact conforms to the circular contour of the rubber tube, improving the fixation of the connection point and reducing or even eliminating the need to connect and disconnect the rubber tube from the gas cane before and after each gas detection operation. This would prevent the rubber tube opening and inner wall from gradually wearing down, and long-term wear would lead to a decrease in the sealing performance of the connection point, resulting in gas leakage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partially enlarged structural diagram of the first and second ring buckles and the rubber tube of this utility model after an explosion; Figure 3 This is a partially enlarged structural diagram of the annular groove and sealing gasket of this utility model; Figure 4 This is a schematic diagram of the structure after the first ring buckle and the second ring buckle of this utility model are engaged and fitted together; Figure 5 This is a partially enlarged structural diagram of the limiting part of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Gas cane body; 2. Rubber tube; 3. Ring clamp; 4. First ring buckle; 5. Second ring buckle; 6. Ring groove; 7. Sealing gasket; 1.1. Extension part; 1.2. Connecting port; 3.1. Limiting part; 3.2. Positioning part; 4.1. Protrusion part; 4.2. First ring frame; 5.1. Slot; 5.2. Second ring frame. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-5 A gas detection device for safe operation in coal mines is used to address the issue that the gas cane, as a detection tool for coal mine gas, is used in conjunction with a rubber hose connected to a carbon dioxide absorption device for a long time during detection. Before and after each gas detection operation, the rubber hose needs to be connected and disconnected from the gas cane, which causes the hose opening and inner wall to gradually wear down. Long-term wear will lead to a decrease in the sealing performance of the connection, resulting in gas leakage.

[0022] As a further technical solution proposed in this utility model, the gas cane body 1 is included, and further includes: a ring clip 3, which is disposed on the gas cane body 1; a limiting part 3.1 is provided on the ring clip 3, and a first ring buckle 4 and a second ring buckle 5 are provided on the limiting part 3.1 for engaging; a first ring frame 4.2, which is disposed on the first ring buckle 4; and a second ring frame 5.2, which is disposed on the second ring buckle 5; when the first ring buckle 4 and the second ring buckle 5 are engaged, the first ring frame 4.2 and the second ring frame 5.2 are combined to abut against the rubber tube 2. Specifically, after the rubber tube 2 is connected to the gas cane body 1, the limiting part 3.1 of the ring clip 3 on the gas cane body 1 engages the first ring buckle 4 and the second ring buckle 5. After the two are engaged, the first ring frame 4.2 and the second ring frame 5.2 are simultaneously combined to form a ring state, such as Figure 4As shown in the diagram, the ring formed by the first ring frame 4.2 and the second ring frame 5.2 of the device generates a squeezing force through contact with the outer surface of the rubber tube 2, forming a radial constraint on the rubber tube 2. This constraint can directly squeeze the connection area between the rubber tube 2 and the gas cane body 1, forcing the rubber tube 2 to fit more tightly against the communication port of the gas cane, improving the sealing effect and preventing gas leakage. Secondly, the ring-shaped contact can fit the circular contour of the rubber tube 2, improving the fixation of the connection part, reducing or even avoiding the need to connect and disconnect the rubber tube and the gas cane before and after each gas detection operation. This would cause the rubber tube opening and inner wall to gradually wear down, and long-term wear would lead to a decrease in the sealing performance of the connection part, resulting in gas leakage.

[0023] In this embodiment, the first ring frame 4.2 and the second ring frame 5.2 are used to provide a circumferential abutment at the connection between the rubber tube 2 and the gas cane body 1. The area of ​​this abutment is the width of the first ring frame 4.2 and the second ring frame 5.2. The specific width of the first ring frame 4.2 and the second ring frame 5.2 is set according to the needs of those skilled in the art. Furthermore, the limiting position after the first ring frame 4.2 and the second ring frame 5.2 are combined is the top position (area) of the connection part along the axial direction (i.e., the extension direction of the rubber tube 2 and the gas cane body 1) after the rubber tube 2 and the gas cane body 1 are connected. Figure 3 As shown in the status, the limit is set from this top position to help improve the sealing and stability of the connection.

[0024] In another embodiment of this utility model, the limiting part 3.1 is specifically a ring structure, and positioning parts 3.2 are provided on the limiting part 3.1. The first ring frame 4.2 and the second ring frame 5.2 are both composed of a semi-circular ring and an L-shaped connecting rod connected to the semi-circular ring. Each L-shaped connecting rod is engaged with each positioning part 3.2. Furthermore, the two positioning parts 3.2 can enable the first ring buckle 4 and the second ring buckle 5 to be quickly and accurately positioned during installation, that is, to quickly engage with the ring clamp 3, ensuring the accuracy of the subsequent synchronous merging of the first ring frame 4.2 and the second ring frame 5.2 into a ring. Specifically, when the first ring buckle 4 and the second ring buckle 5 are engaged on the limiting part 3.1, the L-shaped connecting rods on the first ring frame 4.2 and the second ring frame 5.2 engage with their respective positioning parts 3.2 (to ensure that the first ring buckle 4 and the second ring buckle 5 are engaged with the positioning parts 3.2). Figure 2 For reference, the first ring frame 4.2 corresponds to the upper positioning part 3.2, while the second ring frame 5.2 corresponds to the lower positioning part 3.2. It plays a positioning role for the first ring buckle 4 and the second ring buckle 5, so that the two can be quickly snapped together, which improves the installation efficiency of the device.

[0025] In another embodiment of this utility model, the first ring buckle 4 is provided with a plurality of protrusions 4.1, each protrusion 4.1 being a cylindrical structure. The second ring buckle 5 is provided with a slot 5.1 that engages with each protrusion 4.1, each slot 5.1 being a circular hole structure that fits with each protrusion 4.1. Further, as... Figure 2 As shown in the diagram, the multiple protrusions 4.1 on the first ring buckle 4 and the multiple slots 5.1 on the second ring buckle 5 enable them to engage. The first ring buckle 4 has at least two protrusions 4.1 on each of its two arc-shaped end faces. The specific number of protrusions 4.1 is set according to the needs of those skilled in the art. Preferably, there are four protrusions 4.1, arranged in pairs on the arc-shaped end face of the first ring buckle 4. The protrusions 4.1 and the slots 5.1 are adapted to each other and correspond to each other.

[0026] In another embodiment of this utility model, both the first ring frame 4.2 and the second ring frame 5.2 are provided with ring grooves 6, each ring groove 6 is specifically a semi-circular ring structure, and each ring groove 6 is provided with a sealing gasket 7, each sealing gasket 7 is specifically a semi-circular ring structure, further, as Figure 3 and Figure 4 As shown in the diagram, when the first ring frame 4.2 and the second ring frame 5.2 merge into a circular shape, the sealing gaskets 7 of the two semi-circular rings simultaneously merge into a complete circular sealing ring, as shown. Figure 4 As shown in the diagram, this allows for a tighter fit between the rubber tube 2 and the gas cane body 1, filling the gaps and preventing gas leakage, thus improving the sealing effect. The sealing gasket 7 is specifically made of elastic, wear-resistant rubber material. After the rubber tube 2 is connected to the gas cane body 1, the first ring frame 4.2 and the second ring frame 5.2 are combined to limit the connection. After the operation is completed, the first ring frame 4.2 and the second ring frame 5.2 are separated, and then the rubber tube 2 is separated from the gas cane body 1. The annular grooves 6 on the first ring frame 4.2 and the second ring frame 5.2 accommodate and limit the sealing gasket 7. When the first ring frame 4.2 and the second ring frame 5.2 form radial constraints and abutments on the rubber tube 2, the two sealing gaskets 7 can simultaneously perform their sealing function, further enhancing the overall structure's sealing and fixing effect on the connection.

[0027] In another embodiment of this utility model, protrusions are provided opposite to each other on the first ring frame 4.2, and grooves are provided on the second ring frame 5.2 to engage with each protrusion, such as... Figure 2 and Figure 3 As shown in the diagram, during the merging process of the first ring frame 4.2 and the second ring frame 5.2, the two are engaged by protrusions and grooves, which improves the stability of the merged structure, thus enhancing the limiting stability of the rubber tube 2 by the first ring frame 4.2 and the second ring frame 5.2.

[0028] In another embodiment of this utility model, the gas cane body 1 is provided with an extension 1.1 and a connecting port 1.2, such as... Figure 2 As shown in the status, as Figure 1 As shown in the figure, the extension 1.1 can increase the length of the gas cane body 1, allowing the testing personnel to extend the front end of the gas cane body 1 into a deeper area when conducting gas testing, thus expanding the gas testing range. The connecting port 1.2 provides an interface for the connection between the rubber tube 2 and the gas cane body 1. Through this connecting port 1.2, the rubber tube 2 can be connected to the gas passage inside the gas cane body 1, thereby transporting the collected gas sample to the optical interference methane detector (not shown in the figure) to achieve accurate measurement of gas concentration. This is existing technology and will not be described in detail.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A gas detection device for safe operation in coal mines, comprising a gas cane body (1), characterized in that, Also includes: A ring clip (3) is provided on the gas cane body (1); A limiting part (3.1) is provided on the ring clamp (3), and a first ring buckle (4) and a second ring buckle (5) are provided on the limiting part (3.1) for engaging. The first ring frame (4.2) is disposed on the first ring buckle (4); The second ring frame (5.2) is disposed on the second ring buckle (5); When the first ring buckle (4) and the second ring buckle (5) are engaged, the first ring frame (4.2) and the second ring frame (5.2) come together to abut against the rubber tube (2).

2. The gas detection device for safe operation in coal mines according to claim 1, characterized in that, The limiting part (3.1) is specifically a ring structure, and a positioning part (3.2) is provided on the limiting part (3.1).

3. The gas detection device for safe operation in coal mines according to claim 2, characterized in that, Both the first ring frame (4.2) and the second ring frame (5.2) are composed of a semi-circular ring and an L-shaped connecting rod connected to the semi-circular ring. Each L-shaped connecting rod is engaged with each positioning part (3.2).

4. The gas detection device for safe operation in coal mines according to claim 1, characterized in that, The first ring buckle (4) is provided with a plurality of protrusions (4.1), each of which is specifically a cylindrical structure.

5. The gas detection device for safe operation in coal mines according to claim 4, characterized in that, The second ring (5) has a slot (5.1) that engages with each of the protrusions (4.1).

6. The gas detection device for safe operation of a coal mine according to claim 5, characterized in that, Each of the slots (5.1) is specifically a circular hole structure, which is adapted to each of the protrusions (4.1).

7. The gas detection device for safe operation in coal mines according to claim 1, characterized in that, Both the first ring frame (4.2) and the second ring frame (5.2) are provided with ring grooves (6), and each ring groove (6) is specifically a semi-circular ring structure.

8. The gas detection device for safe operation in coal mines according to claim 7, characterized in that, Each of the annular grooves (6) is provided with a sealing gasket (7), and each of the sealing gaskets (7) is specifically a semi-circular ring structure.

9. The gas detection device for safe operation in coal mines according to claim 3, characterized in that, The first ring frame (4.2) has protrusions arranged opposite each other, and the second ring frame (5.2) has grooves that engage with each of the protrusions.

10. The gas detection device for safe operation in coal mines according to claim 1, characterized in that, The gas cane body (1) is provided with an extension (1.1) and a connecting port (1.2).

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