Combustible gas detection sensor

Abstract

The utility model relates to a combustible gas detection sensor which comprises a protective shell installed on the outer side of a combustible gas sensor body, the bottom of the protective shell is in threaded connection with a round cover, a plurality of ventilation holes are formed in the round cover, a rotatable rotating seat is arranged in the middle of the round cover, a connecting rod is fixed to one end of the rotating seat, and a strip-shaped cleaning brush is fixed to the connecting rod. The cleaning brush is in contact with the gas inlet end of the combustible gas sensor body, a plurality of rectangular holes arranged in an annular array are formed in the protective shell, and rotatable rotating pieces are arranged in the rectangular holes. The combustible gas sensor body is arranged in the protective shell, the combustible gas sensor body is connected with the alarm, the protective shell is screwed on the alarm, a plurality of ventilation holes are formed in the round cover, and a plurality of rectangular holes are formed in the protective shell, so that the effect of enhancing air flow in the alarm is achieved; the problem that the detection effect of the gas sensor body is poor is avoided, and the rotating piece rotates to drive gas to be disturbed in the rectangular hole and the protective shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sensor technology especially a combustible gas detection sensor. BACKGROUND

[0002] The combustible gas is the biggest danger of safety production in the mine, chemical enterprise and petroleum refining enterprise and daily life, when the combustible gas is accumulated to the concentration of deflagration in certain space, can produce explosion at the fire source, seriously endanger the personal safety and property safety, the harm of combustible gas is greater to the influence of coal mine, and most of coal mine accidents are caused by combustible gas such as methane, therefore, people design and manufacture combustible gas alarm for detecting combustible gas concentration and timely alarming when combustible gas reaches dangerous concentration, and the combustible gas alarm is composed of combustible gas sensor, electronic circuit and alarm device, and the key part is sensor.

[0003] The existing combustible gas sensor is installed in the alarm shell, and the air flow in the alarm is poor, so that the detection effect of the combustible gas sensor is poor, and the air inlet of the combustible gas sensor is contaminated with dust and is not easy to clean. UTILITY MODEL CONTENT

[0004] The utility model discloses a combustible gas detection sensor, which is used to solve the problem of poor air flow in the existing alarm, resulting in poor detection effect of the combustible gas sensor, and the air inlet of the combustible gas sensor is contaminated with dust and is not easy to clean.

[0005] In order to solve the above problems, the utility model provides a combustible gas detection sensor, which comprises a protective shell installed on the outer side of a combustible gas sensor body, a circular cover threadedly connected to the bottom of the protective shell, a plurality of ventilation holes formed in the circular cover, a rotatable rotary seat arranged in the middle of the circular cover, a connecting rod fixed to one end of the rotary seat, a strip-shaped cleaning brush fixed to the connecting rod, the cleaning brush being in contact with the air inlet of the combustible gas sensor body, a plurality of rectangular holes arranged in an annular array formed in the protective shell, and a rotatable rotating piece arranged in the rectangular hole.

[0006] The combustible gas detection sensor provided by the utility model also has the following technical features:

[0007] Further, the rotating piece comprises a plurality of rotating plates fixed to the rotating shaft, the rotating shaft is rotatably connected to the corresponding rectangular hole, and the plurality of rotating plates rotate in the corresponding rectangular hole with the rotating shaft as the shaft.

[0008] Further, a supporting ring is fixed to the circular cover, and the upper side of the supporting ring is in contact with the bottom of the combustible gas sensor body.

[0009] Further, the one end of the rotary seat extending into the circular cover is fixed with a cleaning brush, and the cleaning brush can be in contact with the ventilation hole of the circular cover.

[0010] Further, one end of the rotating seat of the round cover is fixed with a connecting shaft, and the connecting shaft is fixed with a side plate.

[0011] Further, the number of the side plates is multiple, and the multiple side plates are distributed on the connecting shaft in a ring array manner.

[0012] The combustible gas sensor body is placed in the shell, the combustible gas sensor body is connected with the alarm, the shell is screwed on the alarm, a plurality of ventilation holes are formed in the round cover and a plurality of rectangular holes are formed in the shell, so that the air flow in the alarm is strengthened, the problem that the detection effect of the combustible gas sensor body is poor is avoided, the rotating member is arranged in the rectangular hole, the rotating member is rotated to drive the gas to disturb in the rectangular hole and the shell, the air flow in the alarm is further strengthened, the cleaning brush is rotated by rotating the rotating seat, and therefore the air inlet end of the combustible gas sensor body can be cleaned by the cleaning brush, and the air inlet end of the combustible gas sensor body is prevented from being contaminated by more dust. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view of the embodiment of the utility model;

[0014] Figure 2 is a perspective view of the embodiment of the utility model;

[0015] Figure 3 is a sectional view of the shell of the embodiment of the utility model;

[0016] Figure 4 is a structure schematic view of the embodiment of the utility model Figure 3 enlarged structure schematic view of A in the embodiment of the utility model. DETAILED DESCRIPTION

[0017] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0018] As Figures 1 to 4In the shown embodiment of the combustible gas detection sensor of the utility model, the combustible gas detection sensor comprises a protective shell 2 installed outside the combustible gas sensor body 1, a circular cover 3 is threadedly connected to the bottom of the protective shell 2, a plurality of ventilation holes are formed in the circular cover 3, a rotatable rotary seat 4 is arranged in the middle of the circular cover 3, one end of the rotary seat 4 is fixedly connected with a connecting rod 5, a strip-shaped cleaning brush 6 is fixedly connected to the connecting rod 5, the cleaning brush 6 is in contact with the air inlet end of the combustible gas sensor body 1, a plurality of rectangular holes 7 arranged in an annular array are formed in the protective shell 2, a rotatable rotating piece 8 is arranged in the rectangular hole 7, the combustible gas sensor body 1 is arranged in the protective shell 2, the combustible gas sensor body 1 is connected with an alarm, the protective shell 2 is screwed on the alarm, a plurality of ventilation holes are formed in the circular cover 3 and a plurality of rectangular holes 7 are formed in the protective shell 2, thereby the air flow in the alarm is strengthened, the problem that the detection effect of the combustible gas sensor body 1 is poor is avoided, the rotating piece 8 is arranged in the rectangular hole 7, the rotating piece 8 rotates to drive the air disturbance in the rectangular hole 7 and the protective shell 2, the air flow in the alarm is further strengthened, the rotary seat 4 is rotated to drive the cleaning brush 6 to rotate, thereby the air inlet end of the combustible gas sensor body 1 is cleaned by the cleaning brush 6, and the air inlet end of the combustible gas sensor body 1 is prevented from being contaminated by a large amount of dust.

[0019] In an embodiment of the present application, preferably, the rotating piece 8 comprises a plurality of rotating plates 82 fixed on a rotating shaft 81, the rotating shaft 81 is rotatably connected in the corresponding rectangular hole 7, the plurality of rotating plates 82 rotate in the corresponding rectangular hole 7 with the rotating shaft 81 as the axis, when the natural wind blows, the wind force can drive the rotating plate 82 to rotate with the rotating shaft 81 as the axis, thereby the air flow is achieved, and the rotating plates 82 on different rotating shafts 81 rotate, thereby the air disturbance is achieved, and the air flow effect is strengthened.

[0020] In an embodiment of the present application, preferably, the circular cover 3 is fixedly connected with a supporting ring 9, the upper side of the supporting ring 9 is in contact with the bottom of the combustible gas sensor body 1, the combustible gas sensor body 1 is supported in the protective shell 2 and the circular cover 3 by the supporting ring 9.

[0021] In an embodiment of the present application, preferably, one end of the rotary seat 4 extending out of the circular cover 3 is fixedly connected with a cleaning brush 10, the cleaning brush 10 is in contact with the ventilation hole in the circular cover 3, the rotary seat 4 is rotated, and the ventilation hole in the circular cover 3 is cleaned by the cleaning brush 10.

[0022] In an embodiment of the present application, preferably, one end of the rotary seat 4 extending out of the circular cover 3 is fixedly connected with a connecting shaft 11, the connecting shaft 11 is fixedly connected with a side plate 12, when the natural wind blows, the wind force blows on the side plate 12 to drive the connecting shaft 11 and the rotary seat 4 to rotate.

[0023] In one embodiment of the present application, preferably, the number of side plates 12 is multiple, and the multiple side plates 12 are distributed on the connecting shaft 11 in the form of an annular array.

[0024] The combustible gas sensor body 1 is placed in the shell 2, the combustible gas sensor body 1 is connected with the alarm, the shell 2 is screwed on the alarm, when there is natural wind blowing, the wind force can drive the rotating plate 82 to rotate around the rotating shaft 81, so that the effect of air flow can be achieved, and the rotating plate 82 on different rotating shafts 81 rotates, which can play the role of gas disturbance, and the effect of air flow is enhanced, a plurality of ventilation holes are formed on the circular cover 3, and a plurality of rectangular holes 7 are formed on the shell 2, so that the effect of enhancing the air flow in the alarm is achieved, when there is natural wind blowing, the wind force blows on the side plate 12 to drive the connecting shaft 11 and the rotating seat 4 to rotate, the rotating seat 4 drives the cleaning brush 6 to rotate, so that the air inlet end of the combustible gas sensor body 1 can be cleaned by the cleaning brush 6, and the air inlet end of the combustible gas sensor body 1 is prevented from being contaminated by a large amount of dust, and the rotating seat 4 can clean the dust in the ventilation hole on the circular cover 3 by the cleaning brush 10.

[0025] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A combustible gas detection sensor comprising a sheath (2) mounted on the outside of a combustible gas sensor body (1), characterized in that, The bottom of the shell (2) is threadedly connected with a round cover (3), a plurality of ventilation holes are formed in the round cover (3), a rotatable rotary seat (4) is arranged in the middle of the round cover (3), one end of the rotary seat (4) is fixed with a connecting rod (5), the connecting rod (5) is fixed with a strip-shaped cleaning brush (6), the cleaning brush (6) is in contact with the air inlet end of the combustible gas sensor body (1), a plurality of rectangular holes (7) arranged in an annular array are formed in the shell (2), and a rotatable rotating piece (8) is arranged in the rectangular hole (7).

2. The combustible gas detection sensor according to claim 1, characterized by: The rotating piece (8) comprises a plurality of rotating plates (82) fixed on a rotating shaft (81), the rotating shaft (81) is rotatably connected with the corresponding rectangular hole (7), and the plurality of rotating plates (82) rotate in the corresponding rectangular hole (7) with the rotating shaft (81) as the shaft.

3. The combustible gas detection sensor of claim 1, wherein: The round cover (3) is fixed with a supporting ring (9), and the upper side of the supporting ring (9) is in contact with the bottom of the combustible gas sensor body (1).

4. The combustible gas detection sensor of claim 1, wherein: The end of the rotary seat (4) extending into the round cover (3) is fixed with a cleaning brush (10), and the cleaning brush (10) can be in contact with the ventilation hole on the round cover (3).

5. The combustible gas detection sensor of claim 1, wherein: The end of the rotary seat (4) extending out of the round cover (3) is fixed with a connecting shaft (11), and the connecting shaft (11) is fixed with a side plate (12).

6. The combustible gas detection sensor of claim 5, wherein: The number of the side plates (12) is multiple, and the multiple side plates (12) are distributed on the connecting shaft (11) in an annular array.

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