CN218646947U

CN218646947U - Gas concentration sensor

Info

Publication number: CN218646947U
Application number: CN202222953326.9U
Authority: CN
Inventors: 赵军; 赵思涵
Original assignee: Hunan Desheng Construction Engineering Co ltd
Current assignee: Hunan Desheng Construction Engineering Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-03-17
Anticipated expiration: 2032-11-07

Abstract

The utility model provides a gas concentration sensor, which comprises an equipment body; the equipment body comprises a detection head; the detection head is connected with a holding handle; the detection head is provided with a display screen; one end of the detection head, which is far away from the holding handle, is provided with a detection chamber; the inner wall of the detection chamber is connected with an electric heating wire; a protection component is arranged at the detection chamber; the protection assembly comprises a protection plate; the protection plate is rotationally connected with the detection head through a rotating part; the protection plate is rotatably connected with a fixing plate; the fixed plate is connected with the detection head through the limiting piece; the detection head is provided with a second limiting piece; the second limiting piece comprises a second placing groove arranged on the detection head; a second L-shaped plate which is connected with the detection head in a sliding manner through a second sliding assembly is arranged in the second placing groove; a second spring connected with the detection head and the second L-shaped plate is arranged in the second placing groove; a through groove is arranged on the fixing plate; the second L-shaped plate penetrates through the through groove; the detection head is provided with a limiting part, so that the gas concentration sensor can be protected when not used, and dust is prevented from entering the detection chamber.

Description

Gas concentration sensor

Technical Field

The utility model relates to a sensor technical field, in particular to gas concentration sensor.

Background

A combustible gas detector is a detector that responds to the concentration of a single or multiple combustible gases. The combustible gas detector has two types, namely a catalytic type and an infrared optical type. The catalytic combustible gas detector measures the concentration of combustible gas by using the resistance change of a refractory metal platinum wire after heating. When combustible gas enters the detector, an oxidation reaction (flameless combustion) is caused on the surface of the platinum wire, and the generated heat raises the temperature of the platinum wire, so that the resistivity of the platinum wire changes. The infrared optical type is to detect the alkane combustible gas in the field environment by using an infrared sensor through the absorption principle of an infrared light source.

Application No.: CN201621232224.6 discloses a domestic type combustible gas concentration sensor, its characterized in that control module, lithium cell, temperature measurement module, combustible gas survey the ring and are located in the casing, control module is located the combustible gas surveys the ring inboard, the combustible gas surveys the ring inboard and still is provided with the heater strip, control module with heater strip, combustible gas survey the ring, temperature measurement module and alarm are connected, the lithium cell is located control module is last, stretch out the alarm upper end the casing, the casing side is equipped with the air vent. The beneficial effects of the utility model are that: the combustible gas detection ring is used, so that the contact area between the combustible gas detection ring and air is increased, and meanwhile, the combustible gas detection ring is placed inside the shell, so that the fluidity of the air is reduced, and the detection accuracy is improved; the heating wire works only when the ambient temperature is low by using the temperature measuring module, so that the power consumption is reduced, and the electric energy is saved.

However, the combustible gas concentration sensor in the above technology does not have a dustproof function, and when the combustible gas concentration sensor is not used, dust is very easy to enter the detection chamber, so that the detection accuracy is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of gas concentration sensor, simple structure, convenient to use is convenient for protect when gas concentration sensor does not use, avoids the dust to get into the detection room.

The utility model provides a gas concentration sensor, which comprises an equipment body; the equipment body comprises a detection head; a holding handle is fixedly connected to the detection head; a display screen is arranged on the detection head; one end of the detection head, which is far away from the holding handle, is provided with a detection chamber; the inner wall of the detection chamber is fixedly connected with an electric heating wire; a protection component is arranged at the detection chamber; the shield assembly includes a shield plate; the protection plate is rotationally connected with the detection head through a rotating part; the protection plate is rotatably connected with a fixing plate; the fixed plate is connected with the detection head through a limiting piece; a second limiting piece is arranged on the detection head; the second limiting piece comprises a second placing groove arranged on the detection head; a second L-shaped plate which is connected with the detection head in a sliding mode through a second sliding assembly is arranged in the second placing groove; a second spring connected with the detection head and the second L-shaped plate is arranged in the second placing groove; a through groove is formed in the fixing plate; the second L-shaped plate penetrates through the through groove; the detection head is provided with a limiting part.

Further, the limiting piece comprises a placing groove arranged on the detection head; an L-shaped plate which is connected with the detection head in a sliding mode through a sliding assembly is arranged in the placing groove; a spring connected with the detection head and the L-shaped plate is arranged in the placing groove; a through groove is formed in the fixing plate; the L-shaped plate penetrates through the through groove.

Further, the rotating part comprises a U-shaped groove arranged on the protection plate; a rotating shaft which is rotatably connected with the protection plate is arranged in the U-shaped groove; the rotating shaft is connected with a supporting plate fixedly connected with the detection head through a third sliding assembly in a sliding mode.

Furthermore, the sliding assembly comprises a sliding plate fixedly connected to the L-shaped plate and a sliding groove which is matched with the sliding plate and is arranged on the detection head.

Furthermore, the second sliding assembly comprises a second sliding block fixedly connected to the second L-shaped plate and a second sliding groove matched with the second sliding block and arranged on the detection head.

Furthermore, the third sliding assembly comprises a third sliding block fixedly connected to the rotating shaft and a third sliding groove arranged on the supporting plate and matched with the third sliding block.

Furthermore, a sealing plate is fixedly connected to the lower end of the protection plate; the detection chamber is internally provided with an annular edge plate fixedly connected with the detection head and attached to the sealing plate, and the sealing plate and the annular edge plate are convenient for sealing the detection chamber.

The utility model has the advantages that: the utility model provides a pair of gas concentration sensor, simple structure, convenient to use is convenient for protect when gas concentration sensor does not use, avoids the dust to get into the detection room.

Drawings

Fig. 1 is a cross-sectional view of a gas concentration sensor according to the present invention.

Fig. 2 is an enlarged view of a point a of the gas concentration sensor of the present invention.

Fig. 3 is an enlarged view of a position B of the gas concentration sensor according to the present invention.

Figure 4 is the enlarged view of the C part of the gas concentration sensor of the utility model

( 1. A detection head; 2. a grip handle; 3. a display screen; 4. a detection chamber; 5. an electric heating wire; 6. a protection plate; 7. a fixing plate; 8. a second placing groove; 9. a second slide assembly; 10. a second L-shaped plate; 11. a second spring; 12. a through groove; 13. a placement groove; 14. a sliding assembly; 15. an L-shaped plate; 16. a spring; 17. a through groove; 18. a U-shaped groove; 19. a rotating shaft; 20. a third sliding assembly; 21. a supporting plate; 22. a sealing plate; 23. annular edge plate )

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

A gas concentration sensor according to fig. 1, 2, 3, 4 comprises a device body; the device body comprises a detection head 1; the detection head 1 is fixedly connected with a holding handle 2; the detection head 1 is provided with a display screen 3; one end of the detection head 1, which is far away from the holding handle 2, is provided with a detection chamber 4; the inner wall of the detection chamber 4 is fixedly connected with an electric heating wire 5; a protection component is arranged at the detection chamber 4; the guard assembly comprises a guard plate 6; the protection plate 6 is rotationally connected with the detection head 1 through a rotating part; the protection plate 6 is rotatably connected with a fixing plate 7; the fixed plate 7 is connected with the detection head 1 through a limiting piece; a second limiting piece is arranged on the detection head 1; the second limiting piece comprises a second placing groove 8 arranged on the detection head 1; a second L-shaped plate 10 connected with the detection head 1 in a sliding manner through a second sliding assembly 9 is arranged in the second placing groove 8; a second spring 11 connected with the detection head 1 and the second L-shaped plate 10 is arranged in the second placing groove 8; a through groove 12 is arranged on the fixed plate 7; the second L-shaped plate 10 passes through the through groove 12; the detection head 1 is provided with a limiting piece.

The limiting part of the utility model comprises a placing groove 13 arranged on the detection head 1; an L-shaped plate 15 which is connected with the detection head 1 in a sliding manner through a sliding assembly 14 is arranged in the placing groove 13; a spring 16 connected with the detection head 1 and the L-shaped plate 15 is arranged in the placing groove 13; a through groove 17 is formed in the fixing plate 7; the L-shaped plate 15 passes through the through slots 17.

The rotating part of the utility model comprises a U-shaped groove 18 arranged on the protection plate 6; a rotating shaft 19 which is rotatably connected with the protection plate 6 is arranged in the U-shaped groove 18; the rotating shaft 19 is slidably connected with a supporting plate 21 fixedly connected with the detection head 1 through a third sliding assembly 20.

Slide assembly 14 includes fixed connection slide on L template 15, with the spout of establishing on detecting head 1 of slide adaptation.

Second slip subassembly 9 includes the second slider of fixed connection on second L template 10, with the second spout of establishing on detecting head 1 of second slider adaptation.

Third sliding component 20 includes fixed connection in 19 epaxial third sliders of pivot, with the third spout of establishing on fagging 21 of third slider adaptation.

The lower end of the protection plate 6 of the utility model is fixedly connected with a sealing plate 22; an annular edge plate 23 which is fixedly connected with the detection head 1 and is attached to the sealing plate 22 is arranged in the detection chamber 4.

The principle of the utility model is as follows: during the use, remove L template 15, extrusion spring 16, rotate fixed plate 7, separate with L template 15, through third sliding assembly 20 upwards remove guard plate 6, seal plate 22 comes out from inspection chamber 4, clockwise 270 degrees rotation guard plate 6, upwards stimulate second L template 10, extrude second spring 11, make second L template 10 pass through groove 12, loosen second L template 10, under the extrusion of second spring 11, L template 10 carries out spacing to guard plate 6, guard plate 6 rotation when using is avoided, after finishing using, remove second L template 10, extrude second spring 11, rotate fixed plate 7, separate with second L template 10, through third sliding assembly 20 upwards remove guard plate 6, anticlockwise rotation guard plate 6, through third sliding assembly 20 downwards remove guard plate 6, seal plate 22 and annular edge 23 laminating, avoid the dust to enter into inspection chamber 4, upwards lift L template 15, rotate fixed plate 7, make L15 enter into groove 12, loosen L template 15, under the effect of spring 16's spring is to L template 7 spacing.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A gas concentration sensor, characterized by: comprises an equipment body; the device body comprises a detection head (1); a holding handle (2) is fixedly connected to the detection head (1); a display screen (3) is arranged on the detection head (1); a detection chamber (4) is arranged at one end of the detection head (1) far away from the holding handle (2); the inner wall of the detection chamber (4) is fixedly connected with an electric heating wire (5); a protection component is arranged at the detection chamber (4); the guard assembly comprises a guard plate (6); the protection plate (6) is rotationally connected with the detection head (1) through a rotating part; the protection plate (6) is rotatably connected with a fixing plate (7); the fixed plate (7) is connected with the detection head (1) through a limiting piece; a second limiting piece is arranged on the detection head (1); the second limiting piece comprises a second placing groove (8) arranged on the detection head (1); a second L-shaped plate (10) which is connected with the detection head (1) in a sliding manner through a second sliding assembly (9) is arranged in the second placing groove (8); a second spring (11) connected with the detection head (1) and the second L-shaped plate (10) is arranged in the second placing groove (8); a through groove (12) is arranged on the fixed plate (7); the second L-shaped plate (10) penetrates through the through groove (12); the detection head (1) is provided with a limiting piece.

2. A gas concentration sensor according to claim 1, wherein: the limiting piece comprises a placing groove (13) arranged on the detection head (1); an L-shaped plate (15) which is connected with the detection head (1) in a sliding manner through a sliding assembly (14) is arranged in the placing groove (13); a spring (16) connected with the detection head (1) and the L-shaped plate (15) is arranged in the placing groove (13); a through groove (12) is arranged on the fixed plate (7); the L-shaped plate (15) penetrates through the through groove (12).

3. A gas concentration sensor according to claim 1, wherein: the rotating piece comprises a U-shaped groove (18) arranged on the protection plate (6); a rotating shaft (19) which is rotationally connected with the protection plate (6) is arranged in the U-shaped groove (18); the rotating shaft (19) is connected with a supporting plate (21) fixedly connected with the detection head (1) through a third sliding assembly (20) in a sliding manner.

4. A gas concentration sensor according to claim 2, wherein: the sliding assembly (14) comprises a sliding plate fixedly connected to the L-shaped plate (15) and a sliding groove matched with the sliding plate and arranged on the detection head (1).

5. A gas concentration sensor according to claim 1, wherein: the second sliding assembly (9) comprises a second sliding block fixedly connected to the second L-shaped plate (10) and a second sliding groove matched with the second sliding block and arranged on the detection head (1).

6. A gas concentration sensor according to claim 3, wherein: the third sliding assembly (20) comprises a third sliding block fixedly connected to the rotating shaft (19) and a third sliding groove which is matched with the third sliding block and is arranged on the supporting plate (21).

7. A gas concentration sensor according to claim 3, wherein: the lower end of the protection plate (6) is fixedly connected with a sealing plate (22); an annular edge plate (23) which is fixedly connected with the detection head (1) and is attached to the sealing plate (22) is arranged in the detection chamber (4).