Methane gas detection instrument

Abstract

The utility model discloses a methane gas detection instrument which comprises a methane detector, the gas inlet end of the methane detector is in threaded connection with a gas inlet pipe, the outer end wall of the gas inlet pipe is provided with a sliding groove, the outer wall of the gas inlet pipe is provided with a mounting hole, the inner wall of the gas inlet pipe is fixedly connected with a limiting ring, and the inner wall of the mounting hole is connected with a connecting sleeve in an inserted mode. The inner wall of the connecting sleeve is in threaded connection with a dust filtering net, and the inner wall of the outer end of the air inlet pipe is slidably connected with a clamping sleeve. The gas inlet pipe is in threaded connection with the gas inlet end of the methane detector, the gas inlet pipe can be conveniently disassembled and replaced, a sliding sleeve is pushed outwards to drive a clamping sleeve to move, the clamping sleeve is disengaged from clamping of the end of a connecting sleeve, at the moment, under the torsion effect of a torsion spring, a rotating arm inwards pushes the connecting sleeve, and the gas inlet pipe is conveniently disassembled and replaced. And the connecting sleeve moves from the interior of the mounting hole to the outer side, so that an operator can conveniently move the connecting sleeve out of the interior of the air inlet pipe and disassemble and clean the dust filtering net.

Description

Technical Field

[0001] The utility model relates to the technical field of detection instruments, in particular to a methane gas detection instrument. Background Art

[0002] Methane gas detector is a detection device that can continuously detect the concentration of methane gas. It is suitable for explosion-proof, methane leak rescue, underground pipelines or mines and other places. It can effectively ensure the safety of workers and production equipment from loss. The methane gas detector uses a large screen with white backlight LCD display, pump suction sampling and gas detection, and is equipped with different sampling probes to facilitate testing of gas environments in different occasions.

[0003] In the existing technology, such as the document with publication number CN219391947U, a gas detection instrument is specifically disclosed. The device in the document can filter the dust in the air entering the detection instrument by installing a filter component inside the shell, so that the instrument can stably detect the gas value. However, the filter component of the device is installed inside the shell, which is not convenient for disassembly and cleaning of the filter component. Over time, it will cause the air intake pipe to be blocked, affecting the air intake of the instrument. For this reason, we propose a methane gas detection instrument. Utility Model Content

[0004] The utility model provides a methane gas detection instrument, which is convenient for an operator to remove a connecting sleeve from the inside of an air intake pipe and to disassemble and clean a dust filter, thereby solving the problem that the air intake pipe is easily blocked.

[0005] The utility model proposes a methane gas detection instrument, including a methane detector, wherein the air inlet end of the methane detector is threadedly connected to an air inlet pipe, the outer end wall of the air inlet pipe is provided with a slide groove, the outer wall of the air inlet pipe is provided with a mounting hole, the inner wall of the air inlet pipe is fixedly connected to a limiting ring, the inner wall of the mounting hole is plugged with a connecting sleeve, the inner wall of the connecting sleeve is threadedly connected to a dust filter, the inner wall of the outer end of the air inlet pipe is slidably connected to a clamping sleeve, the clamping sleeve is clamped and matched with the connecting sleeve, and an elastic component is installed on the outer end wall of the air inlet pipe, and the elastic component is connected to the clamping sleeve.

[0006] Preferably, a docking groove is provided at the inner end of the snap-fit ​​sleeve, and the docking groove is snap-fitted with the connecting sleeve.

[0007] Preferably, a first arc groove is formed at the outer edge of the connecting sleeve, and a second arc groove is formed at the end edge of the docking groove.

[0008] Preferably, a sealing plate is fixedly connected to the outer wall of the connecting sleeve, the sealing plate is slidably connected to the inner wall of the mounting hole, and the sealing plate and the air intake pipe form a complete circular sleeve structure.

[0009] Preferably, the elastic component includes a sliding sleeve and two sliding rods, the sliding sleeve is sleeved on the end of the intake pipe and is slidably connected to the inner wall of the sliding groove, a plurality of anti-slip grooves are provided on the circumferential outer wall of the sliding sleeve, the inner wall of the sliding sleeve is fixedly connected to the outer wall of the clamping sleeve, the two sliding rod ends are respectively connectedly fixed to the outer end surface of the intake pipe, the circumferential outer walls of the two sliding rods are sleeved with springs, the two sliding rod ends pass through the sliding sleeve and are slidably connected thereto, and the outer ends of the two sliding rods are fixedly connected to end covers.

[0010] Preferably, one end of the spring is connected and fixed to the end cover, and the other end of the spring is connected and fixed to the sliding sleeve.

[0011] Preferably, a mounting groove is provided on the inner wall of the mounting hole, a rotating shaft is fixedly connected to the inner wall of the mounting groove, a rotating arm is rotatably connected to the circumferential outer wall of the rotating shaft, the inner end of the rotating arm abuts against the outer wall of the connecting sleeve, and torsion springs are respectively sleeved on both ends of the rotating shaft.

[0012] Preferably, one end of the torsion spring is connected and fixed to the inner wall of the mounting groove, and the other end of the torsion spring is connected and fixed to the rotating arm.

[0013] The beneficial effects of the present invention are:

[0014] 1. By threading the intake pipe with the intake end of the methane detector, the intake pipe can be easily disassembled and replaced. The sliding sleeve is pushed outward to drive the clamping sleeve to move so that the clamping sleeve is disengaged from the clamping connection with the end of the connecting sleeve. At this time, under the torsion force of the torsion spring, the rotating arm pushes the connecting sleeve inward, so that the connecting sleeve moves from the inside of the mounting hole to the outside, thereby facilitating the operator to remove the connecting sleeve from the inside of the intake pipe and disassemble and clean the dust filter.

[0015] 2. During installation, insert the connecting sleeve into the mounting hole, and press the sealing plate inward so that the bottom of the connecting sleeve squeezes the rotating arm. Under the tension of the spring, the clamping sleeve slides toward the inside of the intake pipe, and the end of the connecting sleeve is clamped and fixed through the docking groove at the inner end of the connecting sleeve, so that the end of the connecting sleeve is in close contact with the end of the limiting ring, thereby improving the stability of the installation of the connecting sleeve.

[0016] 3. By providing a first arc groove at the end of the connecting sleeve and a second arc groove at the end of the clamping sleeve, the friction between the connecting sleeve and the clamping sleeve can be reduced when the connecting sleeve is installed, so that the operator can install the connecting sleeve more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the air intake pipe of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the connecting sleeve of the utility model;

[0022] Figure 5 This is a schematic diagram of the installation structure of the sealing plate of the utility model;

[0023] Figure 6 For this utility model Figure 4 The enlarged view of point A in the middle;

[0024] Figure 7 For this utility model Figure 4 The enlarged view of point B in the middle;

[0025] Figure 8 For this utility model Figure 4 Enlarged view of point C in the middle.

[0026] In the figure: 1. Methane detector; 2. Inlet pipe; 3. Limiting ring; 4. Mounting hole; 5. Mounting groove; 6. Slide groove; 7. Connecting sleeve; 8. Dust filter; 9. Rotating shaft; 10. Torsion spring; 11. Rotating arm; 12. Docking groove; 13. Snap sleeve; 14. First arc groove; 15. Second arc groove; 16. Sealing plate; 17. Slide sleeve; 18. Anti-slip groove; 19. Slide rod; 20. Spring; 21. End cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1, Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, a methane gas detection instrument includes a methane detector 1, the inlet end of the methane detector 1 is threadedly connected to an inlet pipe 2, the outer end wall of the inlet pipe 2 is provided with a slide groove 6, the outer wall of the inlet pipe 2 is provided with a mounting hole 4, the inner wall of the inlet pipe 2 is fixedly connected to a limit ring 3, the inner wall of the mounting hole 4 is plugged with a connecting sleeve 7, the inner wall of the connecting sleeve 7 is threadedly connected to a dust filter 8, the inner wall of the outer end of the inlet pipe 2 is slidably connected to a clamping sleeve 13, the clamping sleeve 13 is clamped and matched with the connecting sleeve 7, the outer end wall of the inlet pipe 2 is installed with an elastic component, and the elastic component is connected to The snap-fit ​​sleeve 13 is connected, and by threading the intake pipe 2 and the intake end of the methane detector 1, the intake pipe 2 can be easily disassembled and replaced. The sliding sleeve 17 is pushed outward to drive the snap-fit ​​sleeve 13 to move, so that the snap-fit ​​sleeve 13 is disengaged from the end of the connecting sleeve 7. At this time, under the torsion force of the torsion spring 10, the rotating arm 11 pushes the connecting sleeve 7 inward, so that the connecting sleeve 7 moves from the inside of the mounting hole 4 to the outside, thereby facilitating the operator to remove the connecting sleeve 7 from the inside of the intake pipe 2 and disassemble and clean the dust filter 8.

[0029] like Figure 4 and Figure 7 As shown, a docking groove 12 is provided at the inner end of the snap-fit ​​sleeve 13, and the docking groove 12 is snap-fitted with the connecting sleeve 7. A first arc groove 14 is provided at the edge of the outer end of the connecting sleeve 7, and a second arc groove 15 is provided at the edge of the end of the docking groove 12. By providing the first arc groove 14 at the end of the connecting sleeve 7 and providing the second arc groove 15 at the end of the snap-fit ​​sleeve 13, the friction between the connecting sleeve 7 and the snap-fit ​​sleeve 13 can be reduced when the connecting sleeve 7 is installed, so that the operator can install the connecting sleeve 7 more labor-saving.

[0030] like Figure 4 and Figure 5 As shown, a sealing plate 16 is fixedly connected to the outer wall of the connecting sleeve 7, and the sealing plate 16 is slidably connected to the inner wall of the mounting hole 4. The sealing plate 16 and the air intake pipe 2 form a complete circular sleeve structure.

[0031] like Figure 4 and Figure 8 As shown, the elastic component includes a sliding sleeve 17 and two sliding rods 19. The sliding sleeve 17 is sleeved on the end of the intake pipe 2 and is slidably connected to the inner wall of the slide groove 6. A plurality of anti-slip grooves 18 are provided on the circumferential outer wall of the sliding sleeve 17. The inner wall of the sliding sleeve 17 is connected and fixed to the outer wall of the clamping sleeve 13. The ends of the two sliding rods 19 are respectively connected and fixed to the outer end surface of the intake pipe 2. The circumferential outer walls of the two sliding rods 19 are sleeved with springs 20. The ends of the two sliding rods 19 pass through the sliding sleeve 17 and are slidably connected thereto. The outer ends of the two sliding rods 19 are fixedly connected to end covers 21. One end of the spring 20 is connected and fixed to the end cover 21, and the other end of the spring 20 is connected and fixed to the sliding sleeve 17.

[0032] like Figure 4 and Figure 6 As shown, a mounting groove 5 is opened on the inner wall of the mounting hole 4, and a rotating shaft 9 is fixedly connected to the inner wall of the mounting groove 5. A rotating arm 11 is rotatably connected to the circumferential outer wall of the rotating shaft 9, and the inner end of the rotating arm 11 abuts against the outer wall of the connecting sleeve 7. Torsion springs 10 are respectively sleeved on both ends of the rotating shaft 9, one end of the torsion spring 10 is connected and fixed to the inner wall of the mounting groove 5, and the other end of the torsion spring 10 is connected and fixed to the rotating arm 11. During installation, the connecting sleeve 7 is inserted into the mounting hole 4, and the sealing plate 16 is pressed inwardly so that the bottom of the connecting sleeve 7 squeezes the rotating arm 11. Under the pulling force of the spring 20, the clamping sleeve 13 slides toward the inside of the intake pipe 2, and the end of the connecting sleeve 7 is clamped and fixed through the docking groove 12 at the inner end of the connecting sleeve 7, so that the end of the connecting sleeve 7 is in close contact with the end of the limiting ring 3, thereby improving the stability of the installation of the connecting sleeve 7.

[0033] Working principle: By threading the air intake pipe 2 and the air intake end of the methane detector 1, the air intake pipe 2 can be easily disassembled and replaced. By pushing the sliding sleeve 17 outward, the sliding sleeve 17 slides outward along the sliding rod 19, and the sliding sleeve 17 drives the clamping sleeve 13 to move, so that the clamping sleeve 13 is disengaged from the clamping of the end of the connecting sleeve 7. At this time, under the torsion of the torsion spring 10, the rotating arm 11 pushes the connecting sleeve 7 inward, so that the connecting sleeve 7 moves outward from the inside of the mounting hole 4, so that the operator can easily remove the connecting sleeve 7 from the inside of the air intake pipe 2 and disassemble and clean the dust filter 8;

[0034] During installation, the connecting sleeve 7 is inserted into the mounting hole 4, and the sealing plate 16 is pressed inwardly so that the bottom of the connecting sleeve 7 squeezes the rotating arm 11, causing the rotating arm 11 to rotate to the inside of the mounting groove 5. At this time, under the pulling force of the spring 20, the clamping sleeve 13 slides toward the inside of the intake pipe 2, and the end of the connecting sleeve 7 is clamped and fixed through the docking groove 12 at the inner end of the connecting sleeve 7, so that the end of the connecting sleeve 7 is in close contact with the end of the limiting ring 3, thereby improving the stability of the installation of the connecting sleeve 7.

[0035] By providing a first arc groove 14 at the end of the connecting sleeve 7 and a second arc groove 15 at the end of the clamping sleeve 13, the friction between the connecting sleeve 7 and the clamping sleeve 13 can be reduced when the connecting sleeve 7 is installed, so that the operator can install the connecting sleeve 7 more easily.

[0036] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A methane gas detection instrument, comprising a methane detector (1), characterized in that: The inlet end of the methane detector (1) is threadedly connected to an inlet pipe (2), the outer end wall of the inlet pipe (2) is provided with a slide groove (6), the outer wall of the inlet pipe (2) is provided with a mounting hole (4), the inner wall of the inlet pipe (2) is fixedly connected to a limit ring (3), the inner wall of the mounting hole (4) is plugged with a connecting sleeve (7), the inner wall of the connecting sleeve (7) is threadedly connected to a dust filter (8), the inner wall of the outer end of the inlet pipe (2) is slidably connected to a clamping sleeve (13), the clamping sleeve (13) is clamped and matched with the connecting sleeve (7), and the outer end wall of the inlet pipe (2) is installed with an elastic component, and the elastic component is connected to the clamping sleeve (13).

2. The methane gas detection instrument according to claim 1, characterized in that: The inner end of the snap-fit ​​sleeve (13) is provided with a docking groove (12), and the docking groove (12) is snap-fitted with the connecting sleeve (7).

3. The methane gas detection instrument according to claim 2, characterized in that: A first arc groove (14) is formed at the outer edge of the connecting sleeve (7), and a second arc groove (15) is formed at the end edge of the docking groove (12).

4. The methane gas detection instrument according to claim 1, characterized in that: The outer wall of the connecting sleeve (7) is fixedly connected to a sealing plate (16), the sealing plate (16) is slidably connected to the inner wall of the mounting hole (4), and the sealing plate (16) and the air intake pipe (2) form a complete circular sleeve structure.

5. The methane gas detection instrument according to claim 1, characterized in that: The elastic component comprises a sliding sleeve (17) and two sliding rods (19). The sliding sleeve (17) is sleeved on the end of the air intake pipe (2) and is slidably connected to the inner wall of the sliding groove (6). The circumferential outer wall of the sliding sleeve (17) is provided with a plurality of anti-slip grooves (18). The inner wall of the sliding sleeve (17) is fixedly connected to the outer wall of the clamping sleeve (13). The ends of the two sliding rods (19) are respectively connected and fixed to the outer end surface of the air intake pipe (2). The circumferential outer walls of the two sliding rods (19) are sleeved with springs (20). The ends of the two sliding rods (19) penetrate the sliding sleeve (17) and are slidably connected thereto. The outer ends of the two sliding rods (19) are fixedly connected to end covers (21).

6. The methane gas detection instrument according to claim 5, characterized in that: One end of the spring (20) is connected and fixed to the end cover (21), and the other end of the spring (20) is connected and fixed to the sliding sleeve (17).

7. The methane gas detection instrument according to claim 1, characterized in that: The inner wall of the mounting hole (4) is provided with a mounting groove (5), the inner wall of the mounting groove (5) is fixedly connected to a rotating shaft (9), the circumferential outer wall of the rotating shaft (9) is rotatably connected to a rotating arm (11), the inner end of the rotating arm (11) abuts against the outer wall of the connecting sleeve (7), and torsion springs (10) are respectively sleeved on both ends of the rotating shaft (9).

8. The methane gas detection instrument according to claim 7, characterized in that: One end of the torsion spring (10) is connected and fixed to the inner wall of the mounting groove (5), and the other end of the torsion spring (10) is connected and fixed to the rotating arm (11).

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