Portable gas monitor

Abstract

The utility model relates to the technical field of gas monitors, in particular to a portable gas monitor, which comprises a monitor main body and a gas inlet structure arranged at the position of a gas inlet hole of the monitor main body, the gas inlet structure comprises a mounting box, a rotating shaft, a gas inlet hose and a locking piece, the mounting box is fixed with the monitor main body, and the mounting box is provided with an inlet, an outlet and a mounting hole; the rotating shaft is of a hollow structure, the lower end of the rotating shaft is rotationally connected and communicated with the air inlet, and the upper end of the rotating shaft extends into the mounting box from the mounting hole and is elastically connected with the mounting box through a clockwork spring; one end of the air inlet hose is connected and communicated with the rotating shaft; the locking piece is used for selectively fixing the rotating shaft to the mounting box so as to limit or allow the rotating shaft to rotate relative to the mounting box. When the air inlet hose is not used, the air inlet hose can be wound and stored in the mounting box, excessive space cannot be temporarily used, and the air inlet hose is convenient to store and not prone to being lost.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring technology, specifically a portable gas monitoring instrument. Background Technology

[0002] In the field of gas detection, gas detectors are essential tools for identifying and quantifying the composition and concentration of specific gases in an environment. Depending on the application, gas detectors can be categorized into various types, including portable, handheld, stationary, and online. The core component of these instruments is the gas sensor, which senses and responds to changes in the surrounding environment, thereby enabling accurate measurement of gas types and concentrations.

[0003] Portable gas detectors typically consist of a main body with an air inlet to draw the gas to be tested into the instrument for analysis. To meet the testing needs of various spaces, especially confined or hard-to-reach locations, some portable devices are equipped with a detachable air inlet tube, allowing users to flexibly adjust the air intake path as needed. However, this structure also introduces a drawback: the detached air inlet tube is easily lost when not in use, affecting not only the integrity of the instrument but also potentially limiting its convenience and efficiency in subsequent use. To address these issues, this invention proposes a portable gas monitor. Utility Model Content

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

[0005] This utility model is achieved through the following technical solution:

[0006] A portable gas monitor includes an instrument body and an air intake structure located at an air inlet on the instrument body. The air intake structure includes a mounting box, a rotating shaft, an air intake hose, and a locking component. The mounting box is fixed to the instrument body and has an inlet / outlet and a mounting hole. The rotating shaft is hollow, with its lower end rotatably connected to and communicating with the air inlet. The upper end of the rotating shaft extends from the mounting hole into the mounting box and is elastically connected to the mounting box via a spring. One end of the air intake hose is connected to and communicates with the rotating shaft, and the other end extends from the inlet / outlet. The locking component is used to selectively fix the rotating shaft to the mounting box to restrict or allow the rotating shaft to rotate relative to the mounting box.

[0007] Optionally, the mounting box has a first cavity and a second cavity that are vertically connected, the inlet and outlet are connected to the first cavity, the spring is detachably disposed in the second cavity, and a cover plate is detachably mounted on the top of the second cavity.

[0008] Optionally, the upper end of the rotating shaft is provided with a first bayonet, and the inner wall of the second cavity is provided with a second bayonet, and the two ends of the spring are respectively engaged in the first bayonet and the second bayonet.

[0009] Optionally, the cover plate is detachably connected to the top of the second cavity by means of a threaded connection.

[0010] Optionally, the locking element is a hand-tightening screw, which is threaded onto the cover plate and positioned facing the upper end face of the rotating shaft.

[0011] Optionally, a filter nozzle is connected to one end of the air intake hose located outside the mounting box, and the size of the filter nozzle is larger than the size of the inlet and outlet.

[0012] Optionally, two rollers are rotatably provided at the inlet and outlet, and the air intake hose passes between the two rollers, with the diameter of the rollers gradually increasing from the middle to both ends.

[0013] Optionally, a connecting seat is fixedly provided at the air inlet of the instrument body, and a connecting groove is formed in the inner wall of the connecting seat. An annular connecting flange is provided at the lower end of the rotating shaft. The rotating shaft is rotatably connected to the connecting seat through the rotational engagement of the connecting flange and the connecting groove.

[0014] Compared with the prior art, this utility model provides a portable gas monitor with the following features:

[0015] Beneficial effects:

[0016] 1. This utility model, through the combined use of an installation box, a rotating shaft, an air intake hose, and a locking component, allows users to pull the air intake hose out of the installation box to the required length according to actual needs, and can also roll up and store the air intake hose in the installation box when not in use, without occupying too much space, and is easy to store and not easy to lose.

[0017] 2. By setting up a first cavity and a second cavity, the spring is placed in an independent second cavity, which facilitates the disassembly and replacement of the spring during subsequent use.

[0018] 3. The filter nozzle of this utility model can be used to filter the gas entering the air inlet hose, preventing impurities from entering the instrument body. In addition, by using a filter nozzle with a larger size than the inlet and outlet, the air inlet hose can be prevented from being completely retracted into the mounting box. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0021] Figure 3 For the present utility model Figure 2 A partial structural diagram;

[0022] Figure 4 This is a schematic diagram of the air intake structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the connection structure between the rotating shaft and the connecting seat of this utility model;

[0024] Figure 6 This is a schematic diagram showing the position and structure of the rotating shaft of this utility model within the mounting box.

[0025] In the diagram: 1. Main body of the instrument; 2. Air inlet; 3. Mounting box; 4. Inlet and outlet; 5. Mounting hole; 6. Rotating shaft; 7. Spring; 8. Air inlet hose; 9. Locking element; 10. First chamber; 11. Second chamber; 12. Cover plate; 13. First bayonet; 14. Second bayonet; 15. Filter nozzle; 16. Roller; 17. Connecting seat; 18. Connecting groove; 19. Connecting flange. Detailed Implementation

[0026] 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.

[0027] Example: Please refer to Figures 1 to 6 According to an embodiment of this utility model, a portable gas monitor is provided, including an instrument body 1 and an air intake structure located at the air inlet 2 of the instrument body 1. If necessary, the instrument body 1 adopts the instrument body 1 of the prior art HYS1000 gas detector, whose detection principle is prior art and will not be described in detail here. The air intake structure includes a mounting box 3, a rotating shaft 6, an air intake hose 8, and a locking member 9: the mounting box 3 is fixed to the instrument body 1, and the mounting box 3 is provided with an inlet / outlet 4 and a mounting hole 5; the rotating shaft 6 is a hollow structure, the lower end of the rotating shaft 6 is rotatably connected to and communicates with the air inlet 2, and the upper end of the rotating shaft 6 extends from the mounting hole 5 into the mounting box 3 and is elastically connected to the mounting box 3 through a spring 7; one end of the air intake hose 8 is connected to and communicates with the rotating shaft 6, and the other end extends out from the inlet / outlet 4; the locking member 9 is used to selectively fix the rotating shaft 6 to the mounting box 3 to restrict or allow the rotating shaft 6 to rotate relative to the mounting box 3.

[0028] The portable gas monitor with the above structure allows the user to pull out the inlet hose 8 from the mounting box 3 before testing, as needed. During this process, the rotating shaft 6 rotates, the spring 7 deforms and stores force, and the hose 8 is locked in place by the locking element 9 when it reaches the desired length. During testing, the inlet hose 8 is placed at the desired testing position, and gas is drawn into the instrument body 1 through the hose for analysis. After testing, the locking element 9 is operated to release the hose 8, allowing it to retract into the mounting box 3 under the restoring force of the spring 7. Therefore, this portable gas monitor allows the inlet hose 8 to be rolled up and stored when not in use, minimizing space usage and making storage convenient and less prone to loss.

[0029] In this exemplary embodiment, the mounting box 3 has a first cavity 10 and a second cavity 11 that are vertically connected. The inlet and outlet 4 are connected to the first cavity 10. The spring 7 is detachably disposed in the second cavity 11, and a cover plate 12 is detachably mounted on the top of the second cavity 11. By placing the spring 7 in the independent second cavity 11, it is convenient to disassemble and replace the spring 7 in subsequent use.

[0030] In order to make the spring 7 detachable, in this exemplary embodiment, the upper end of the rotating shaft 6 is provided with a first latch 13, and the inner wall of the second cavity 11 is provided with a second latch 14. The two ends of the spring 7 are respectively latched into the first latch 13 and the second latch 14.

[0031] To enable the cover plate 12 to be detachable, in this exemplary embodiment, the cover plate 12 is detachably connected to the top of the second cavity 11 by means of a threaded connection. Of course, the cover plate 12 can also be connected to the top of the second cavity 11 by means of a snap-fit ​​or bolt connection.

[0032] In this exemplary embodiment, the locking member 9 is a hand-tightening screw, which is threaded onto the cover plate 12 and positioned opposite the upper end face of the rotating shaft 6. Of course, as long as the rotating shaft 6 can be selectively fixed to the mounting box 3 to restrict or allow rotation of the rotating shaft 6 relative to the mounting box 3, there are no particular limitations on the specific structural form of the locking member 9.

[0033] In this exemplary embodiment, a filter nozzle 15 is connected to one end of the air intake hose 8 located outside the mounting box 3. The size of the filter nozzle 15 is larger than the size of the inlet and outlet 4. The filter nozzle 15 can be used to filter the gas entering the air intake hose 8, preventing impurities from entering the instrument body 1. In addition, by using a filter nozzle 15 that is larger than the size of the inlet and outlet 4, it is possible to prevent the air intake hose 8 from being completely retracted into the mounting box 3.

[0034] In this exemplary embodiment, two rollers 16 are rotatably arranged at the inlet / outlet 4, and the air intake hose 8 passes between the two rollers 16. The diameter of the rollers 16 gradually increases from the middle to both ends. When the air intake hose 8 moves at the inlet / outlet 4, the rollers 16 can roll and contact the air intake hose 8, thereby reducing the wear of the air intake hose 8 by the mounting box 3.

[0035] To achieve a rotatable connection and communication between the lower end of the rotating shaft 6 and the air inlet 2, in this exemplary embodiment, a connecting seat 17 is fixedly provided at the air inlet 2 of the instrument body 1. A connecting groove 18 is formed recessed within the inner wall of the connecting seat 17. An annular connecting flange 19 is provided at the lower end of the rotating shaft 6. The rotating shaft 6 is rotatably connected to the connecting seat 17 through the rotatable engagement of the connecting flange 19 and the connecting groove 18. Alternatively, the rotating shaft 6 can also be rotatably connected and communicated with the air inlet 2 using a rotary joint.

[0036] 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 gas monitor comprising a main body (1) and an air inlet structure provided at a position of an air inlet hole (2) of the main body (1), characterized in that, The air inlet structure comprises: A mounting box (3) is fixed with the instrument body (1), and an inlet and outlet (4) and a mounting hole (5) are arranged on the mounting box (3); A rotating shaft (6) is a hollow structure, the lower end of the rotating shaft (6) is rotatably connected with the air inlet hole (2) and communicates with the air inlet hole (2), the upper end of the rotating shaft (6) extends into the mounting box (3) from the mounting hole (5) and is elastically connected between the mounting box (3) and a clockwork spring (7); An air inlet hose (8) is connected with the rotating shaft (6) at one end and communicates with the rotating shaft (6), and the other end of the air inlet hose (8) extends out of the inlet and outlet (4); A locking member (9) is used for selectively fixing the rotating shaft (6) to the mounting box (3) to limit or allow the rotating shaft (6) to rotate relative to the mounting box (3).

2. The portable gas monitor of claim 1, wherein: The mounting box (3) has a first cavity (10) and a second cavity (11) which communicate in the vertical direction, the inlet and outlet (4) communicate with the first cavity (10), the clockwork spring (7) is detachably arranged in the second cavity (11), and a cover plate (12) is detachably arranged on the top of the second cavity (11).

3. The portable gas monitor of claim 2, wherein: The upper end of the rotating shaft (6) is provided with a first clamping hole (13), the inner wall of the second cavity (11) is provided with a second clamping hole (14), and the two ends of the clockwork spring (7) are clamped in the first clamping hole (13) and the second clamping hole (14) respectively.

4. The portable gas monitor of claim 2, wherein: The cover plate (12) is detachably connected to the top of the second cavity (11) in a threaded connection manner.

5. The portable gas monitor of claim 2, wherein: The locking member (9) is a hand screw, the hand screw is threadedly connected to the cover plate (12) and is arranged opposite to the end face of the upper end of the rotating shaft (6).

6. The portable gas monitor of claim 1, wherein: One end of the air inlet hose (8) located outside the mounting box (3) is connected with a filter tip (15), and the size of the filter tip (15) is greater than the size of the inlet and outlet (4).

7. The portable gas monitor of claim 1, wherein: Two rollers (16) are rotatably arranged at the inlet and outlet (4), the air inlet hose (8) passes between the two rollers (16), and the diameters of the rollers (16) gradually increase from the middle to the two ends.

8. The portable gas monitor of claim 1, wherein: A connecting seat (17) is fixedly arranged at the air inlet hole (2) of the instrument body (1), a connecting groove (18) is concavely formed in the inner wall of the connecting seat (17), the lower end of the rotating shaft (6) is provided with an annular connecting flange (19), and the rotating shaft (6) is rotatably connected with the connecting seat (17) through the rotating cooperation of the connecting flange (19) and the connecting groove (18).

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