Portable combustible gas detector

Abstract

The utility model relates to the technical field of gas detection equipment, and discloses a portable combustible gas detector which comprises a detector body, an air inlet pipe used for air inlet is fixedly installed on the top face of the detector body, a sealing structure for shielding an air inlet hole of the air inlet pipe is arranged on the wall face of the detector body and comprises a sealing body, a sliding body and an extension rod, the sealing body is fixedly connected with the sliding body, the sealing body is arranged on the wall face of the air inlet pipe in a sleeving mode, and the sliding body is elastically connected with the detector body. The sliding block is pushed by the spring to slide in the sliding groove, the sliding body drives the sealing body to move upwards to seal the gas inlet in the wall face of the gas inlet pipe, when gas is needed to enter the detector body from the inlet, the sliding body can be pulled to drive the sealing body to slide downwards to be exposed out of the gas inlet, and when the whole device is loaded or idle, the sealing body is closed. The probability that dust or floccules enter the gas inlet pipe to interfere with detection gas can be reduced, the whole equipment is protected, and the detection precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection equipment, in particular to a portable combustible gas detector. Background Art

[0002] The prior art discloses a method for using a portable combustible gas detector (CN201310169130.3). The portable combustible gas detector includes a DC-DC power supply, a gas sensor, and a detection circuit. A signal processing circuit equipped with a combustible gas sensor is connected to a single-chip microcomputer STM32F103 as a central processor. The central processor is also connected to a gas sampling circuit, a key signal acquisition circuit, a sound alarm circuit, a liquid crystal display circuit, a use status indication circuit and a clock circuit. An air suction device is added to the probe.

[0003] The existing technology mainly sucks the gas into the detection chamber through the pipeline and analyzes it by the sensor to realize the detection of the gas. In order to ensure that the combustibles in the gas will not be interfered with, it is necessary to open a number of air holes on the wall of the pipeline. The air holes are in a normally open state, and a filter cannot be set to prevent the combustibles in the gas to be detected from being removed during the suction. When the normally open pipeline is used for storage and storage, flocs and impurities may be sucked into the pipeline from the air inlet, thereby affecting the normal operation of the equipment and the detection results.

[0004] To this end, we propose a portable combustible gas detector. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a portable combustible gas detector.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a portable combustible gas detector, comprising a detector body; an air intake pipe for air intake is fixedly installed on the top surface of the detector body, and an air intake hole is opened on the circumferential surface of the air intake pipe; the wall surface of the detector body is provided with a closing structure for blocking the air intake hole of the air intake pipe, and the closing structure includes a sealing body, a sliding body and an extension rod; the sealing body is fixedly connected to the sliding body, the sealing body is sleeved on the wall surface of the air intake pipe, the sliding body is elastically connected to the detector body, the extension rod is fixedly connected to the sliding body, and the sliding body can push the sealing body to move to block the air intake hole of the air intake pipe.

[0007] As a preferred embodiment of the present invention, the sealing body forms an annular structure, the sealing body is adapted to the air intake pipe, a sealing ring is provided on the inner circumferential surface of the sealing body, and the sealing ring contacts the outer wall of the air intake pipe to seal the gap between the sealing body and the air intake pipe.

[0008] As a preferred embodiment of the present invention, the closed structure further comprises a slider, the slider is fixedly connected to the sliding body, and the slider is elastically connected to the detector body.

[0009] As a preferred embodiment of the utility model, the side wall of the detector body is provided with a slide groove adapted to the slider, a spring is provided in the slide groove, the slider slides in the slider slide groove, and both ends of the spring are respectively fixedly connected to the slider and the inner wall of the detector body.

[0010] As a preferred embodiment of the present invention, the extension rod forms an arc-shaped rod body structure, the extension rod is fixedly connected to the side wall of the sliding body, and the extension rod forms a limiting rod body on the side of the sliding body.

[0011] As a preferred embodiment of the utility model, the closed structure further comprises a nose ring and a connecting rod, wherein the nose ring is fixedly connected to the connecting rod, the connecting rod is elastically connected to the sliding body, and the connecting rod can resist the position of the detector body locking the sealing body.

[0012] As a preferred embodiment of the utility model, a groove adapted for the connecting rod is formed through the wall surface of the sliding body, the connecting rod slides in the groove, another spring is fixedly connected to the bottom of the connecting rod, an avoidance groove is formed on the inner bottom surface of the sliding body located at the groove, the spring is located in the avoidance groove and fixedly connected to the sliding body, and the nose ring is annular and fixedly connected to the end face of the connecting rod.

[0013] Beneficial Effects

[0014] The utility model provides a portable combustible gas detector. It has the following beneficial effects:

[0015] 1. This portable combustible gas detector uses a spring to push the slider to slide in the slide groove, and the sliding body drives the sealing body to move upward to close the air inlet on the wall of the air inlet pipe. When using and detecting the gas, the gas needs to enter the detector body from the inlet port, and the sliding body can be pulled to drive the sealing body to slide down and leak out of the air inlet. When the entire device is loaded or idle, it can reduce the probability of dust or flocs entering the air inlet pipe to interfere with the detection gas, thereby achieving protection for the entire equipment and ensuring detection accuracy.

[0016] 2. This portable combustible gas detector is provided with an extension rod, which is used to form a limiting rod body. When holding the detector body, the fingers can be bent and placed into the concave surface of the extension rod. The extension rod can reduce the probability of the detector body falling off the hand and improve the stability of holding.

[0017] 3. By putting a finger into the nose ring and pulling the nose ring, the nose ring drives the connecting rod to slide and stretch the spring, so that the connecting rod is disengaged from the positioning hole. At this time, the position of the sliding body can be adjusted, and then the position of the sealing body can be adjusted to determine whether the air intake hole of the intake pipe leaks out. It has the characteristics of easy adjustment and locking of the sealing body position, simple operation, and can be used with one hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the three-dimensional diagrams of the utility model;

[0019] Figure 2 This is the second stereogram of the utility model;

[0020] Figure 3 This is one of the three-dimensional diagrams of the closed structure of the utility model;

[0021] Figure 4 This is the second three-dimensional diagram of the closed structure of the utility model;

[0022] Figure 5 It is a partial cross-sectional view of the sliding body of the utility model.

[0023] Legend: 10. Detector body; 11. Air inlet pipe; 20. Sealing body; 21. Sliding body; 22. Extension rod; 23. Sliding block; 30. Nose ring; 31. Connecting rod. DETAILED DESCRIPTION

[0024] A portable combustible gas detector, such as Figure 1 and Figure 2 As shown, it includes a detector body 10; an air intake pipe 11 for air intake is fixedly installed on the top surface of the detector body 10, and an air intake hole is opened on the circumferential surface of the air intake pipe 11, wherein a detection cavity is provided in the cavity of the detector body 10, and the air intake pipe 11 is connected with the detection cavity, and a sensor for detecting gas is installed in the detection cavity, and a processor, a lithium battery and an alarm are provided on the back of the detector body 10, and the gas entering the detection cavity is detected by the sensor and transmitted to the processor to realize the detection of the gas. It should be noted that an air pump is installed in the cavity of the air intake pipe 11, and the output end of the air pump is connected to a pipeline, and the pipeline extends into the detection cavity. The specific control method and connection method have been disclosed in detail in the prior art and will not be repeated here;

[0025] like Figure 2 , Figure 3 and Figure 4As shown, the wall surface of the detector body 10 is provided with a closed structure for blocking the air inlet hole of the air inlet pipe 11, and the closed structure includes a sealing body 20, a sliding body 21 and an extension rod 22. The sealing body 20 is fixedly connected to the sliding body 21, and the sealing body 20 is sleeved on the wall surface of the air inlet pipe 11. The sliding body 21 is elastically connected to the detector body 10, and the extension rod 22 is fixedly connected to the sliding body 21. The sliding body 21 can push the sealing body 20 to move and block the air inlet hole of the air inlet pipe 11. The sealing body 20 forms an annular structure, and the sealing body 20 is adapted to the air inlet pipe 11. A sealing ring is provided on the inner circumferential surface of the sealing body 20, and the sealing ring contacts the outer wall of the air inlet pipe 11 to block the gap between the sealing body 20 and the air inlet pipe 11. The closed structure also includes a slider 23, and the slider 23 is fixedly connected to the sliding body 21. The slider 2 3 is elastically connected to the detector body 10, and a slide groove adapted to the slider 23 is opened on the side wall of the detector body 10, and a spring is arranged in the slide groove, and the slider 23 slides in the slide groove of the slider 23, and the two ends of the spring are respectively fixedly connected to the slider 23 and the inner wall surface of the detector body 10. In this scheme, the slider 23 is pushed to slide in the slide groove by the spring, and the sliding body 21 drives the sealing body 20 to move up to close the air inlet of the wall surface of the air inlet pipe 11. When using and detecting gas, it is necessary for gas to enter the detector body 10 from the inlet, and the sliding body 21 can be pulled to drive the sealing body 20 to slide down and leak out of the air inlet. When the whole device is loaded or idle, the probability of dust or flocs entering the air inlet pipe 11 to interfere with the detection gas can be reduced, thereby realizing the protection of the whole equipment and ensuring the detection accuracy.

[0026] like Figure 4 As shown, the extension rod 22 forms an arc-shaped rod body structure, the extension rod 22 is fixedly connected to the side wall of the sliding body 21, and the extension rod 22 forms a limiting rod body on the side of the sliding body 21. By setting the extension rod 22 and utilizing the extension rod 22 to form a limiting rod body, when holding the detector body 10, the fingers can be bent and placed in the concave surface of the extension rod 22. The extension rod 22 can reduce the probability of the detector body 10 falling off the hand and improve the stability of holding.

[0027] like Figure 4 and Figure 5As shown, the closed structure also includes a nose ring 30 and a connecting rod 31, the nose ring 30 is fixedly connected to the connecting rod 31, the connecting rod 31 is elastically connected to the sliding body 21, the connecting rod 31 can contact the detector body 10 to lock the position of the sealing body 20, the wall surface of the sliding body 21 is penetrated with a notch adapted to the connecting rod 31, the connecting rod 31 slides in the notch, the bottom of the connecting rod 31 is fixedly connected to another spring, the sliding body 21 is located at the notch The bottom surface is provided with an avoidance groove, the spring is located in the avoidance groove and is fixedly connected to the sliding body 21, and the nose ring 30 is annular The nose ring 30 is shaped and fixedly connected to the end face of the connecting rod 31. Two positioning holes are provided on the wall of the detector body 10 at the slide groove. The connecting rod 31 can be inserted into the positioning holes. By putting the fingers into the nose ring 30 and pulling the nose ring 30, the nose ring 30 drives the connecting rod 31 to slide and stretch the spring, so that the connecting rod 31 is disengaged from the positioning hole. At this time, the position of the sliding body 21 can be adjusted, and then the position of the sealing body 20 can be adjusted to determine whether the air inlet hole of the intake pipe 11 leaks out. It has the characteristics of easy adjustment and locking of the position of the sealing body 20, simple operation, and can be used with one hand.

[0028] The working principle of the utility model is as follows: put a finger into the nose ring 30 and pull up the nose ring 30, the nose ring 30 drives the connecting rod 31 to slide and stretch the spring, so that the connecting rod 31 is disengaged from the positioning hole, at this time the position of the sliding body 21 can be adjusted, and then the position of the sealing body 20 can be adjusted to determine whether to leak out of the air inlet hole of the air inlet pipe 11, the spring pushes the slider 23 to slide in the slide groove, the sliding body 21 drives the sealing body 20 to move up to close the air inlet of the wall of the air inlet pipe 11, and when using and detecting gas, the gas needs to enter the detector body 10 from the inlet port, the sliding body 21 can be pulled to drive the sealing body 20 to slide down and leak out of the air inlet, when the entire device is loaded or idle, it can reduce the probability of dust or flocs entering the air inlet pipe 11 to interfere with the detection of gas.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A portable combustible gas detector, comprising a detector body (10); an air intake pipe (11) fixedly mounted on the top surface of the detector body (10) for air intake, the circumferential surface of the air intake pipe (11) being provided with an air intake hole, characterized in that: The wall surface of the detector body (10) is provided with a closed structure for blocking the air inlet hole of the air inlet pipe (11), the closed structure comprising a sealing body (20), a sliding body (21) and an extension rod (22), the sealing body (20) and the sliding body (21) are fixedly connected, the sealing body (20) is sleeved on the wall surface of the air inlet pipe (11), the sliding body (21) is elastically connected to the detector body (10), the extension rod (22) is fixedly connected to the sliding body (21), and the sliding body (21) can push the sealing body (20) to move to block the air inlet hole of the air inlet pipe (11).

2. The portable combustible gas detector according to claim 1 is characterized in that: The sealing body (20) forms an annular structure, the sealing body (20) is matched with the air intake pipe (11), and a sealing ring is provided on the inner circumferential surface of the sealing body (20), and the sealing ring contacts the outer wall of the air intake pipe (11) to block the gap between the sealing body (20) and the air intake pipe (11).

3. The portable combustible gas detector according to claim 1 is characterized in that: The closed structure further comprises a slider (23), wherein the slider (23) is fixedly connected to the sliding body (21), and the slider (23) is elastically connected to the detector body (10).

4. The portable combustible gas detector according to claim 3 is characterized in that: The side wall of the detector body (10) is provided with a slide groove adapted to fit the slider (23), a spring is arranged in the slide groove, the slider (23) slides in the slide groove of the slider (23), and two ends of the spring are respectively fixedly connected to the slider (23) and the inner wall surface of the detector body (10).

5. The portable combustible gas detector according to claim 1 is characterized in that: The extension rod (22) forms an arc-shaped rod body structure, the extension rod (22) is fixedly connected to the side wall of the sliding body (21), and the extension rod (22) forms a limiting rod body on the side of the sliding body (21).

6. The portable combustible gas detector according to claim 1, characterized in that: The closed structure further comprises a nose ring (30) and a connecting rod (31), wherein the nose ring (30) is fixedly connected to the connecting rod (31), the connecting rod (31) is elastically connected to the sliding body (21), and the connecting rod (31) can contact the detector body (10) to lock the position of the sealing body (20).

7. The portable combustible gas detector according to claim 6, characterized in that: The wall surface of the sliding body (21) is penetrated by a notch adapted to the connecting rod (31), the connecting rod (31) slides in the notch, another spring is fixedly connected to the bottom of the connecting rod (31), an avoidance groove is provided on the inner bottom surface of the sliding body (21) at the notch, the spring is located in the avoidance groove and is fixedly connected to the sliding body (21), and the nose ring (30) is ring-shaped and fixedly connected to the end face of the connecting rod (31).

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