A portable gas detector

By designing the connection mechanism, support mechanism and protective mechanism in the portable gas detector, a variety of fixing methods are achieved, which solves the problems of inconvenience in use and the impact of detection results of the existing portable gas detector, and improves the stability and safety of the detector.

CN118671282BActive Publication Date: 2025-04-29SUZHOU IND PARK TAIZHI MEASUREMENT & CONTROL TECH CO LTD
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Patent Information

Application Number
CN202411154644.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-22
Publication Date
2025-04-29
Estimated Expiration
2044-08-22

AI Technical Summary

Technical Problem

The existing portable gas detector requires workers to hold it by hand or use long-line fixing when used, which is inconvenient and can easily cause the detector to fall or the pipes to loosen, affecting the detection results.

Method used

A portable gas detector is designed to realize the various fixing methods of the detector by setting up a connection mechanism, support mechanism and protective mechanism, including back clamps, suction cups and long-line hoisting to ensure the stability and safety of the detector in different usage environments.

Benefits of technology

Through various fixing methods, the burden on workers is reduced, the detector is prevented from falling and the pipes are loose, and the accuracy and safety of gas detection are ensured.

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Abstract

The present invention discloses a portable gas detector, which relates to the technical field of detectors. Specifically, it includes: a detector, the outside of which is fixedly connected with a pump housing, and the outside of which is fixedly connected with an outer ring; the portable gas detector also includes: a support mechanism, which is used to reinforce the position of the detector during detection work, the support mechanism is fixedly connected to the outside of the outer ring, the support mechanism includes a second groove and a half ring, the inside of the half ring is fixedly connected with a first telescopic rod, the inside of the second groove is fixedly connected with a fixed shaft, the half ring is arranged on the outside of the outer ring, and the second groove is opened on the inside of the outer ring; a protective mechanism, which is used to protect the air intake position of the detector, the protective mechanism is fixedly connected to the outside of the support mechanism, the protective mechanism includes an angle plate, and the outside of the angle plate is fixedly connected with a connecting rod. The portable gas detector achieves the purpose of improving the use efficiency of the equipment.
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Description

Technical Field

[0001] The invention relates to the technical field of detectors, and in particular to a portable gas detector. Background Art

[0002] Gas detector is an instrument tool for detecting gas leakage concentration, including portable gas detector, handheld gas detector, fixed gas detector, online gas detector, etc. Gas sensors are mainly used to detect the types of gases in the environment. Gas sensors are sensors used to detect the composition and content of gases.

[0003] Most of the current portable gas detectors require workers to hold the detectors by hand or use long cables to fix the detectors and place them in the test area to detect and process the gas, which is inconvenient to use. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a portable gas detector, which specifically includes:

[0005] A detector, the outside of which is fixedly connected to a pump casing, and the outside of which is fixedly connected to an outer ring;

[0006] The portable gas detector also includes:

[0007] A support mechanism, used to reinforce the position of the detector during detection, the support mechanism is fixedly connected to the outside of the outer ring, the support mechanism includes a second groove and a half ring, the inside of the half ring is fixedly connected to the first telescopic rod, the inside of the second groove is fixedly connected to the fixed shaft, the half ring is arranged outside the outer ring, and the second groove is opened inside the outer ring;

[0008] A protective mechanism is used to protect the air intake position of the detector. The protective mechanism is fixedly connected to the outside of the supporting mechanism. The protective mechanism includes a corner plate. The outside of the corner plate is fixedly connected to a connecting rod. The outside of the connecting rod is fixedly connected to a base plate. The corner plate is fixedly connected to the top of the first telescopic rod.

[0009] Preferably, the outside of the pump housing is fixedly connected with a connecting mechanism, the outside of the detector is provided with a display screen, the outside of the detector is provided with buttons, the semi-ring is connected to the outer ring by screws, the second groove and the semi-ring are each provided with two and symmetrically arranged, the first telescopic rods are provided with four, the connecting rods are provided with four, and the bottom plate is set to an elastic material.

[0010] Preferably, a first groove is provided inside the half ring, two first grooves are provided and are symmetrically arranged, and the outside of the fixed shaft is rotatably connected with a rotating ring.

[0011] Preferably, the outside of the rotating ring is fixedly connected to a strap, and two of the rotating ring and the strap are provided. The outside of the strap is fixedly connected to a suction cup for fixing the position of the detector or reinforcing the back clip. Friction rods are evenly provided on the outside of the strap, and two suction cups are provided.

[0012] Preferably, a locking opening is provided at the bottom of the base plate, and a gasket is fixedly connected to the bottom of the base plate. Two gaskets are provided and symmetrically arranged. A second telescopic rod is fixedly connected to the outside of the angle plate. Four second telescopic rods are provided. The outsides of the four second telescopic rods are fixedly connected to a fixing box, and the inside of the fixing box is fixedly connected to a moving component.

[0013] Preferably, the moving assembly comprises an inclined plate, the outside of the inclined plate is fixedly connected to a third telescopic rod, the outside of the third telescopic rod is fixedly connected to a moving plate, and the inclined plate is fixedly connected to the inside of a fixing box.

[0014] Preferably, the top of the movable plate is fixedly connected with an adjusting rod, and there are multiple adjusting rods. The top of the adjusting rod is fixedly connected with a lifting plate, and the outside of the lifting plate is fixedly connected with a rubber ball for squeezing and fixing an external pipe. There are multiple lifting plates and rubber balls.

[0015] Preferably, the moving component also includes a stretching rod and an arc-shaped groove, the interior of the arc-shaped groove is fixedly connected with a blocking plate for blocking the connecting pipe, the blocking plate is set to a rubber material, the arc-shaped groove is opened inside the fixed box, and the stretching rod is fixedly connected to the outside of the fixed box.

[0016] Preferably, the connection mechanism comprises a back plate, the outside of the back plate is fixedly connected with a back clip, the back clip is used to fix the detector on the waist or chest of the worker, and the back plate is fixedly connected to the outside of the detector.

[0017] Preferably, the connection mechanism further comprises a connection cylinder, the top of which is fixedly connected with a connection pipe, the connection pipe is used to connect with an external pipeline to collect gas, and the connection cylinder is fixedly connected to the top of the pump housing.

[0018] The present invention provides a portable gas detector having the following beneficial effects:

[0019] 1. The portable gas detector is convenient for fixing the position of the detector by setting a connecting mechanism. When using existing gas detectors, workers are mostly required to hold the detector in their hands or use a long line to fix the detector and place the detector in the test area to detect and process the gas, which is inconvenient to use. Therefore, a connecting mechanism is set, and an adjustable back clip is set on the back of the detector. When workers use the detector in different areas, they can pin the detector on their waists or hang it on their chests to reduce the burden on the workers. And the detector is stuck on the worker's waist or chest to prevent the detector from falling when the worker holds the detector.

[0020] 2. The portable gas detector is provided with a supporting mechanism and a protective mechanism, and the height of the protective mechanism is controlled by adjusting the stroke of the first telescopic rod. When the device is not in use, four plugging plates spliced ​​together are used to seal and protect the top of the connecting pipe to reduce the entry of dust into the connecting pipe and the connecting cylinder. When the device is in use, the position of the moving component is controlled by adjusting the stroke of the second telescopic rod, the position of the external pipeline connected to the connecting pipe is limited, and the external pipeline is elastically squeezed to avoid the connection pipe and the external pipeline being separated during the movement of the detector, resulting in impure gas entering the detector and affecting the detection work.

[0021] 3. The portable gas detector is provided with a connection mechanism and a support mechanism. When the detector needs to be placed in a certain detection position, the strap can be manually pulled, and the strap drives the rotating ring to rotate to control the angle of the suction cup and fix the suction cup in the specified position, thereby reinforcing the position of the equipment to prevent the pipeline from loosening due to the change of the detector position during the detection process. When the detector needs to be sent to a deeper area for detection, it is usually necessary to use a long-line hoisting detector. At this time, the suction cup can be fixed on the outside of the back clip or the bottom of the back clip to prevent the back clip from opening during the descent.

[0022] 4. The portable gas detector can be used in different fixing ways by setting up connection mechanisms, support mechanisms and protection mechanisms. The detector can be fixed on the waist or chest of the worker by using a back clip, fixed on a workbench or a detection point by using a suction cup, and can be hoisted by long lines to perform detection work in deeper areas. The connecting pipe and connecting tube can be sealed and protected to avoid impure detection gas due to loose pipes during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the back structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the connecting mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the supporting mechanism structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 The structural diagram at A in the middle;

[0028] Figure 6 It is a schematic diagram of the structure of the protection mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the mobile assembly of the present invention;

[0030] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at B in the figure.

[0031] In the figure: 1, detector; 2, pump housing; 3, connecting mechanism; 301, connecting tube; 302, connecting pipe; 303, back plate; 304, back clip; 4, display screen; 5, button; 6, outer ring; 7, supporting mechanism; 701, first groove; 702, half ring; 703, first telescopic rod; 704, fixed shaft; 705, rotating ring; 706, strap; 707, suction cup; 708, second groove; 8, Protective mechanism; 801, angle plate; 802, connecting rod; 803, bottom plate; 804, gasket; 805, second telescopic rod; 806, fixed box; 807, moving assembly; 8071, inclined plate; 8072, third telescopic rod; 8073, moving plate; 8074, adjusting rod; 8075, lifting plate; 8076, rubber ball; 8077, stretching rod; 8078, arc groove; 8079, blocking plate. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0033] like Figure 1-Figure 8 As shown, the present invention provides a technical solution: specifically comprising:

[0034] A detector 1, a pump housing 2 is fixedly connected to the outside of the detector 1, a display screen 4 is arranged on the outside of the detector 1, a button 5 is arranged on the outside of the detector 1, and an outer ring 6 is fixedly connected to the outside of the pump housing 2;

[0035] The portable gas detector also includes:

[0036] The support mechanism 7 is used to reinforce the position of the detector 1 during the detection work. The support mechanism 7 is fixedly connected to the outside of the outer ring 6. The support mechanism 7 includes a second groove 708 and a half ring 702. The inside of the half ring 702 is fixedly connected to the first telescopic rod 703. The inside of the second groove 708 is fixedly connected to the fixed shaft 704. The half ring 702 is arranged outside the outer ring 6, and the second groove 708 is opened inside the outer ring 6.

[0037] The protective mechanism 8 is used to protect the air intake position of the detector 1. The protective mechanism 8 is fixedly connected to the outside of the supporting mechanism 7. The protective mechanism 8 includes an angle plate 801. The outside of the angle plate 801 is fixedly connected to a connecting rod 802. The outside of the connecting rod 802 is fixedly connected to a base plate 803. The angle plate 801 is fixedly connected to the top of the first telescopic rod 703.

[0038] The outside of the pump housing 2 is fixedly connected with a connecting mechanism 3, the half ring 702 is connected to the outer ring 6 by screws, two second grooves 708 and two half rings 702 are provided, and are symmetrically arranged, four first telescopic rods 703 are provided, four connecting rods 802 are provided, and the bottom plate 803 is set to an elastic material.

[0039] Before using the detector 1, adjust the connection mechanism 3, the support mechanism 7 and the protection mechanism 8 according to the detection position of the detector 1 and the fixed position of the detector 1 to fix the position of the detector 1. Then adjust the support mechanism 7 and the protection mechanism 8 to reinforce the position of the detector 1, connect the external pipeline to the connection mechanism 3, and reinforce the external pipeline. Then turn on the detector 1 to start gas detection.

[0040] The connecting mechanism 3 includes a back plate 303, and the outside of the back plate 303 is fixedly connected with a back clip 304. The back plate 303 is fixedly connected to the outside of the detector 1. When the worker needs to move the detector 1, the back clip 304 can be manually adjusted to clamp the detector 1 around the waist or chest to move the detector 1 to detect the gas.

[0041] The connecting mechanism 3 further includes a connecting cylinder 301 , the top of which is fixedly connected to a connecting pipe 302 , and the connecting cylinder 301 is fixedly connected to the top of the pump housing 2 .

[0042] A first groove 701 is provided inside the half ring 702. There are two first grooves 701, which are symmetrically arranged. A fixed shaft 704 and a rotating ring 705 can also be installed inside the first groove 701. The fixed shaft 704 is rotatably connected to the rotating ring 705 outside. The rotating ring 705 is fixedly connected to the outside with a strap 706. Both the rotating ring 705 and the strap 706 are provided with two. The strap 706 is fixedly connected to the outside with a suction cup 707. Friction rods are evenly arranged on the outside of the strap 706. There are two suction cups 707.

[0043] In the initial state, the suction cup 707 is symmetrically sucked and fixed on the outside of the pump housing 2. When the detector 1 needs to be fixed on the workbench, the strap 706 is manually pulled to separate the suction cup 707 from the pump housing 2. Then the strap 706 is manually rotated, and the strap 706 drives the rotating ring 705 to rotate outside the fixed shaft 704, and the suction cup 707 is manually pressed to fix the suction cup 707 on the workbench, thereby fixing the position of the detector 1.

[0044] When the detector 1 needs to be hoisted using a long line, the strap 706 is manually pulled to separate the suction cup 707 from the pump housing 2. Then the strap 706 is manually rotated to drive the rotating ring 705 to rotate outside the fixed shaft 704, and the suction cup 707 is manually pressed to fix the suction cup 707 on the back of the detector 1 to block the opening position of the back clip 304 and prevent the back clip 304 from opening during the falling process of the detector 1.

[0045] A locking opening is provided at the bottom of the base plate 803, and a locking tube passes through the inside of the locking opening. A gasket 804 is fixedly connected to the bottom of the base plate 803. Two gaskets 804 are provided and symmetrically arranged. A second telescopic rod 805 is fixedly connected to the outside of the angle plate 801. Four second telescopic rods 805 are provided. The outsides of the four second telescopic rods 805 are fixedly connected to a fixing box 806. The inside of the fixing box 806 is fixedly connected to a moving component 807.

[0046] Before using the device, the first telescopic rod 703 is in the initial state, and the second telescopic rod 805 is in the open state. At this time, the bottom plate 803 is sleeved on the outside of the clamping tube, the gasket 804 is in contact with the pump housing 2, and the bottom plate 803 is slightly deformed. When it is necessary to connect the external pipe with the connecting pipe 302, the second telescopic rod 805 is adjusted to the initial state, and the fixing box 806 is driven by the second telescopic rod 805 to gradually move away from the connecting pipe 302. At this time, the external pipe can be manually connected to the connecting pipe 302.

[0047] The moving assembly 807 includes an inclined plate 8071 , the outside of the inclined plate 8071 is fixedly connected to a third telescopic rod 8072 , the outside of the third telescopic rod 8072 is fixedly connected to a moving plate 8073 , and the inclined plate 8071 is fixedly connected to the inside of the fixed box 806 .

[0048] The top of the movable plate 8073 is fixedly connected to an adjusting rod 8074, and there are multiple adjusting rods 8074. The top of the adjusting rod 8074 is fixedly connected to a lifting plate 8075, and the outside of the lifting plate 8075 is fixedly connected to a rubber ball 8076. The lifting plate 8075 and the rubber ball 8076 are connected by a rod with adjustable length, and there are multiple lifting plates 8075 and rubber balls 8076.

[0049] When it is necessary to connect the external pipe to the connecting pipe 302, the second telescopic rod 805 is adjusted to the initial state, the four fixing boxes 806 are all moved outward, the external pipe and the connecting pipe 302 are manually installed, and according to the size of the external pipe, the stroke of the third telescopic rod 8072 and the second telescopic rod 805 is manually adjusted. The first telescopic rod 703 is opened, and the first telescopic rod 703 drives the angle plate 801, the connecting rod 802, the bottom plate 803 and the second telescopic rod 805 to move upward.

[0050] Open the second telescopic rod 805 and the third telescopic rod 8072. The second telescopic rod 805 drives the fixed box 806 to move toward the connecting pipe 302. The third telescopic rod 8072 drives the movable plate 8073, the adjusting rod 8074 and the lifting plate 8075 to move, thereby driving the rubber ball 8076 outside the lifting plate 8075 to move until the rubber ball 8076 contacts and slightly squeezes the external pipe.

[0051] The moving component 807 also includes a stretching rod 8077 and an arc groove 8078. The interior of the arc groove 8078 is fixedly connected with a blocking plate 8079, and the blocking plate 8079 is set to a rubber material. The arc groove 8078 is opened inside the fixed box 806, and the stretching rod 8077 is fixedly connected to the outside of the fixed box 806.

[0052] In the initial state, the second telescopic rod 805 is in an open state. At this time, the four blocking plates 8079 are spliced ​​together to block the top of the connecting pipe 302, so that the top of the connecting pipe 302 is in a closed state, reducing dust and impurities entering the connecting pipe 302.

[0053] Working principle: Before using the detector 1, adjust the connecting mechanism 3, the supporting mechanism 7 and the protective mechanism 8 according to the position detected by the detector 1 and the fixed position of the detector 1 to fix the position of the detector 1.

[0054] When the worker needs to move the detector 1 , the worker can manually adjust the back clip 304 , clamp the detector 1 around the waist or chest, and move the detector 1 to detect the gas.

[0055] In the initial state, the suction cup 707 is symmetrically sucked and fixed on the outside of the pump housing 2. When the detector 1 needs to be fixed on the workbench, the strap 706 is manually pulled to separate the suction cup 707 from the pump housing 2. Then the strap 706 is manually rotated, and the strap 706 drives the rotating ring 705 to rotate outside the fixed shaft 704, and the suction cup 707 is manually pressed to fix the suction cup 707 on the workbench, thereby fixing the position of the detector 1.

[0056] When the detector 1 needs to be hoisted using a long line, the strap 706 is manually pulled to separate the suction cup 707 from the pump housing 2. Then the strap 706 is manually rotated to drive the rotating ring 705 to rotate outside the fixed shaft 704, and the suction cup 707 is manually pressed to fix the suction cup 707 on the back of the detector 1 to block the opening position of the back clip 304 and prevent the back clip 304 from opening during the falling process of the detector 1.

[0057] Then adjust the supporting mechanism 7 and the protective mechanism 8, reinforce the position of the detector 1, connect the external pipeline to the connecting mechanism 3, and reinforce the external pipeline. Then turn on the detector 1 to start gas detection.

[0058] Before using the device, the first telescopic rod 703 is in the initial state, and the second telescopic rod 805 is in the open state. At this time, the four blocking plates 8079 are spliced ​​together and blocked at the top of the connecting pipe 302, so that the top of the connecting pipe 302 is in a closed state, reducing the dust and impurities entering the connecting pipe 302. At this time, the bottom plate 803 is sleeved on the outside of the clamping tube, the gasket 804 is in contact with the pump housing 2, and the bottom plate 803 is slightly deformed. When it is necessary to connect the external pipeline with the connecting pipe 302, adjust the second telescopic rod 805 to the initial state, and the fixing box 806 is driven by the second telescopic rod 805 to gradually move away from the connecting pipe 302. At this time, the external pipeline can be manually connected to the connecting pipe 302.

[0059] When it is necessary to connect the external pipe to the connecting pipe 302, the second telescopic rod 805 is adjusted to the initial state, the four fixing boxes 806 are all moved outward, the external pipe and the connecting pipe 302 are manually installed, and according to the size of the external pipe, the stroke of the third telescopic rod 8072 and the second telescopic rod 805 is manually adjusted. The first telescopic rod 703 is opened, and the first telescopic rod 703 drives the angle plate 801, the connecting rod 802, the bottom plate 803 and the second telescopic rod 805 to move upward.

[0060] Open the second telescopic rod 805 and the third telescopic rod 8072. The second telescopic rod 805 drives the fixed box 806 to move toward the connecting pipe 302. The third telescopic rod 8072 drives the movable plate 8073, the adjusting rod 8074 and the lifting plate 8075 to move, thereby driving the rubber ball 8076 outside the lifting plate 8075 to move until the rubber ball 8076 contacts and slightly squeezes the external pipe.

[0061] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A portable gas detector, comprising: The detector (1) is characterized in that: the outside of the detector (1) is fixedly connected to a pump casing (2), the outside of the pump casing (2) is fixedly connected to an outer ring (6), and the outside of the pump casing (2) is fixedly connected to a connecting mechanism (3); The portable gas detector also includes: A support mechanism (7) for reinforcing the position of the detector (1) during detection work, the support mechanism (7) being fixedly connected to the outside of the outer ring (6), the support mechanism (7) comprising a second groove (708) and a half ring (702), the interior of the half ring (702) being fixedly connected to a first telescopic rod (703), the interior of the second groove (708) being fixedly connected to a fixed shaft (704), the half ring (702) being arranged outside the outer ring (6), and the second groove (708) being opened inside the outer ring (6); A protection mechanism (8) for protecting the air intake position of the detector (1), the protection mechanism (8) being fixedly connected to the outside of the support mechanism (7), the protection mechanism (8) comprising a corner plate (801), the outside of the corner plate (801) being fixedly connected to a connecting rod (802), the outside of the connecting rod (802) being fixedly connected to a bottom plate (803), and the corner plate (801) being fixedly connected to the top of the first telescopic rod (703); A first groove (701) is provided inside the half ring (702), two first grooves (701) are provided and are symmetrically arranged, and a rotating ring (705) is rotatably connected to the outside of the fixed shaft (704); The outside of the rotating ring (705) is fixedly connected to a binding belt (706), two of each of the rotating ring (705) and the binding belt (706) are provided, the outside of the binding belt (706) is fixedly connected to a suction cup (707), the outside of the binding belt (706) is evenly provided with friction rods, and two of the suction cups (707) are provided; The bottom of the bottom plate (803) is provided with a latching opening, the bottom of the bottom plate (803) is fixedly connected with a gasket (804), two gaskets (804) are provided and symmetrically arranged, the outside of the angle plate (801) is fixedly connected with a second telescopic rod (805), four second telescopic rods (805) are provided, the outsides of the four second telescopic rods (805) are all fixedly connected with a fixing box (806), and the inside of the fixing box (806) is fixedly connected with a moving component (807); The moving assembly (807) comprises an inclined plate (8071), the outside of the inclined plate (8071) is fixedly connected to a third telescopic rod (8072), the outside of the third telescopic rod (8072) is fixedly connected to a moving plate (8073), and the inclined plate (8071) is fixedly connected to the inside of a fixed box (806); The top of the movable plate (8073) is fixedly connected to an adjusting rod (8074), and a plurality of the adjusting rods (8074) are provided; the top of the adjusting rod (8074) is fixedly connected to a lifting plate (8075), and the outside of the lifting plate (8075) is fixedly connected to a rubber ball (8076), and a plurality of the lifting plate (8075) and the rubber ball (8076) are provided; The moving assembly (807) further comprises a stretching rod (8077) and an arc-shaped groove (8078); a blocking plate (8079) is fixedly connected to the interior of the arc-shaped groove (8078); the blocking plate (8079) is made of rubber material; the arc-shaped groove (8078) is provided inside the fixed box (806); and the stretching rod (8077) is fixedly connected to the exterior of the fixed box (806); The connection mechanism (3) comprises a back plate (303), the outside of the back plate (303) is fixedly connected to a back clip (304), and the back plate (303) is fixedly connected to the outside of the detector (1).

2. The portable gas detector according to claim 1, characterized in that: The detector (1) is provided with a display screen (4) on the outside, and a button (5) is provided on the outside of the detector (1). The semi-ring (702) is connected to the outer ring (6) by screws. The second groove (708) and the semi-ring (702) are provided with two each and are symmetrically arranged. The first telescopic rods (703) are provided with four, the connecting rods (802) are provided with four, and the bottom plate (803) is provided with an elastic material.

3. The portable gas detector according to claim 1, characterized in that: The connection mechanism (3) further comprises a connection cylinder (301), the top of which is fixedly connected to a connection pipe (302), and the connection cylinder (301) is fixedly connected to the top of the pump casing (2).

Citation Information

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