CN215727964U

CN215727964U - Pump gas detector

Info

Publication number: CN215727964U
Application number: CN202120721261.8U
Authority: CN
Inventors: 杨泽东; 葛逢春; 郭美丽; 覃伟; 冯旭; 刘向伟
Original assignee: Shenzhen Clou Precision Instrument Co Ltd
Current assignee: Shenzhen Clou Precision Instrument Co Ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2022-02-01
Anticipated expiration: 2031-04-09

Abstract

The utility model discloses a pump suction gas detector, which comprises a gas detector body and a pump suction part, wherein the gas detector body is provided with a gas inlet and a gas outlet; the gas detector body comprises a first shell and a gas sensor group arranged in the first shell; the pumping part comprises a bottom shell, a pump body mounting rack, an electronic pump, an air path connecting piece and a top shell; a first waterproof breathable film is arranged on one side of the bottom shell facing the first shell, and the pump body mounting frame is arranged on one side of the bottom shell away from the first shell; a gas circuit groove position is formed in one side, facing the bottom shell, of the pump body mounting frame, a first sealing rubber gasket is arranged between the gas circuit groove position and the bottom shell, and an electronic pump mounting frame and a gas circuit connecting piece mounting frame are arranged on one side, away from the bottom shell, of the pump body mounting frame; the electronic pump and the gas circuit connecting piece are respectively arranged on corresponding positions. The bottom shell is provided with a second through hole corresponding to the gas sensor group, and the first sealing rubber pad is provided with a third through hole corresponding to the second through hole.

Description

Pump gas detector

Technical Field

The utility model relates to the technical field of gas detection, in particular to a pump gas suction detector.

Background

The gas detector is an instrument and meter detection tool for detecting gas leakage concentration. The gas detector mainly utilizes a gas sensor to detect the types of gases in the environment and the components and the content of the detected gases, comprises a pump suction type gas detector and a diffusion type gas detector, and is widely applied to field detection in many places. In some special working environments, such as explosive narrow ditches, wells or working areas with concentrations exceeding the bearing capacity of human bodies, workers are difficult to enter due to space limitation or the fact that the places are filled with toxic and combustible gases, and certain potential safety hazards exist for the personal safety of detection personnel. The pumping type gas detector can stretch a sampling pipe into a region to be detected, an electronic pump is used for sampling, and gas is sent to the gas detector body for detection. However, the existing pump-suction type gas detector is easy to have faults such as gas path blockage or breath holding due to unreasonable design of gas path channels.

Accordingly, there is a need in the art for a new pumping gas detector to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pump gas detector to solve the problems in the background art.

The utility model provides a pump suction gas detector, which comprises a gas detector body and a pump suction part, wherein the gas detector body is provided with a gas inlet and a gas outlet;

the gas detector body comprises a first shell and a gas sensor group arranged in the first shell;

the pumping part comprises a bottom shell, a pump body mounting rack, an electronic pump, an air path connecting piece and a top shell; the bottom shell is connected with the first shell, a first waterproof breathable film is arranged on one side of the bottom shell facing the first shell, and the pump body mounting frame is arranged on one side of the bottom shell away from the first shell; a gas circuit groove is formed in one side, facing the bottom shell, of the pump body mounting frame, a first sealing rubber gasket which is hermetically assembled with the gas circuit groove to form a gas circuit channel is arranged between the gas circuit groove and the bottom shell, and an electronic pump mounting frame and a gas circuit connecting piece mounting frame are arranged on one side, away from the bottom shell, of the pump body mounting frame; the electronic pump and the gas circuit connecting piece are respectively arranged on the electronic pump mounting frame and the gas circuit connecting piece mounting frame; the gas circuit connecting piece is provided with a first cavity and a second cavity which are mutually independent, the first cavity is respectively provided with a first gas inlet interface and a first gas outlet interface, and the second cavity is provided with a second gas inlet interface and a second gas outlet interface; the first air inlet interface is hermetically connected with an air inlet on the top shell, the first air outlet interface is hermetically connected with an air inlet of the electronic pump through a first hose, an air outlet of the electronic pump is hermetically connected with the second air inlet interface through a second hose, and the second air outlet interface is communicated with the air channel through a first through hole on the pump body mounting frame;

the bottom shell is provided with a second through hole corresponding to the gas sensor group, and the first sealing rubber pad is provided with a third through hole corresponding to the second through hole.

Preferably, a second waterproof breathable film is arranged between the second air outlet interface and the first through hole.

Preferably, be equipped with an adapter on the first air inlet, adapter one end sealing connection first air inlet, adapter other end sealing connection the air inlet of epitheca.

Preferably, the gas inlet of the top shell is provided with a sampling pipe for extending to a gas sampling point.

Preferably, the gas sensor group comprises four gas sensors, the bottom shell corresponds to the four gas sensors and is provided with four second through holes, and the first sealing rubber mat corresponds to each second through hole and is provided with the third through hole.

Preferably, the four gas sensors are respectively H₂S gas sensor, CO gas sensor, O₂Gas sensor, combustible gas sensor.

Preferably, the pumping part further comprises a first circuit board arranged on one side of the pump bottom shell facing the first shell, the first circuit board is electrically connected with the electronic pump, a probe is welded on the first circuit board, and the probe is connected with a second circuit board of the gas detector body.

Preferably, the first shell is provided with a display module and a control key.

Preferably, the pumping gas detector further comprises a power supply battery and an indicator light.

Preferably, the second circuit board is further electrically connected with the display module, the control key, the power supply battery and the indicator light.

The utility model has the beneficial effects that: according to the pump gas suction detector, air sampling is carried out on a detection area through the pump suction part, so that the problem that potential safety hazards exist in a narrow space or a working site with potential danger for workers is solved; on the other hand, the whole gas circuit of the utility model has reasonable design, greatly reduces the problem of gas circuit blockage, and is also provided with a plurality of waterproof and breathable films between the gas inlet and the gas sensor to prevent water from entering.

Drawings

FIG. 1 is a front view of a pumped gas detector according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a front view of a pumped gas detector according to an embodiment of the present invention;

FIG. 3 is a left side view of the pumped gas detector of FIG. 2;

FIG. 4 is an exploded view of the structure of the pumping section of the pumped gas detector according to the embodiment of the present invention;

fig. 5 is a schematic structural view of an air passage connector of the pumped gas detector according to the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Referring to fig. 1 to fig. 3, there are shown schematic structural diagrams according to an embodiment of the present invention, which include: a gas detector body 10 and a pumping section 20.

Specifically, the gas meter body 10 includes a first housing 11 and a gas sensor group 12. The first housing 11 has a first accommodating cavity in which the gas sensor group 12 is disposed, and the sensing part of the gas sensor group 12 faces the pumping part 20. The gas sensor group 12 includes four gas sensors, each of which is H₂S gas sensor, CO gas sensor, O₂Gas sensor, combustible gas sensor. Wherein the combustible gas can be CH₄. A display module 13 and a control key 14 are arranged on the first shell 11, the display module 13 is used for displaying a detection result and man-machine interaction, and the control key 14 is used for switching on and off and parameters of the gas pumping detector. The first housing 11 is further provided with three indicator lights 15, and the number of the indicator lights 15 is three, and the indicator lights are respectively used for displaying a normal state, an alarm state and a fault state.

With further reference to fig. 4 to 5, the pumping section 20 includes: a bottom shell 21, a pump body mounting frame 22, an electronic pump 23, an air passage connecting piece 24 and a top shell 25. The bottom shell 21 and the top shell 25 enclose a second accommodating cavity, and the pump body mounting frame 22, the electronic pump 23 and the air path connecting piece 24 are arranged in the second accommodating cavity. Bottom shell 21 is connected with first casing 11, and bottom shell 21 is equipped with second through-hole 211 corresponding to the response portion of four kinds of gas sensors respectively, and because the gaseous gas sensor quantity of the gaseous detector of pumping of this embodiment is four, the quantity of second through-hole 211 on bottom shell 21 is 4. One side of the bottom shell 21 facing the first casing 11 is provided with a first waterproof breathable film 26, and one side of the bottom shell away from the first casing 11 is provided with a pump body mounting frame 22. The gas mounting frame 22 is provided with a gas path groove 221 towards one side of the bottom case 21, a first sealing rubber gasket 27 is arranged between the gas path groove 221 and the bottom case 21, the first sealing rubber gasket 27 forms a gas path channel by being hermetically assembled with the gas path groove 221, and specifically, a third through hole 271 is arranged at each second through hole 211 on the first sealing rubber gasket 27 corresponding to the bottom case 21 so as to enable gas to contact with the gas sensor. An electronic pump mounting rack (not shown in the figure) and an air circuit connecting piece mounting rack (not shown in the figure) are arranged on one side of the pump body mounting rack 22, which is far away from the bottom shell 21; the electronic pump 23 and the air circuit connector 24 are mounted on the electronic pump mounting bracket and the air circuit connector mounting bracket, respectively. The electronic pump 23 is connected with the air passage connector 24 in a sealing way.

Specifically, the air path connector 24 has a first cavity 241 and a second cavity 242 that are independent of each other, the first cavity 241 is provided with a first air inlet interface 2411 and a first air outlet interface 2412, respectively, and the second cavity 242 is provided with a second air inlet interface 2421 and a second air outlet interface (not shown in the figure). The first air outlet interface 2412 and the second air inlet interface 2421 are arranged in parallel and located on the same plane, and straight lines where the first air inlet interface 2411 and the first air outlet interface 2412 are located are not located on the same plane. Specifically, the air path connector 24 is separated into two cavities by the second sealing rubber pad 245, and the second sealing rubber pad 245 is squeezed to seal the air path when the air path connector 24 is installed on the air path connector installation frame. The first air inlet interface 2411 is provided with an adapter 29, and the adapter 29 is in a vertical structure. One end of the adapter 29 is hermetically connected to the first air inlet interface 2411, and the other end of the adapter 29 is hermetically connected to the air inlet 251 of the top case 25. The first air inlet interface 2411 is hermetically connected with an air inlet 251 on the top shell 25 through the adapter 29, the first air outlet interface 2412 is hermetically connected with an air inlet of the electronic pump 23 through a first hose 243, an air outlet of the electronic pump 23 is hermetically connected with a second air inlet interface 2421 through a second hose 244, and the second air outlet interface is communicated with the air passage through a first through hole on the pump body mounting frame 22. In this embodiment, since the air path connector 24 is separated into two cavities by the second sealing rubber pad 245, the second air outlet port is a through hole formed on the second sealing rubber pad 245. Further, in order to prevent water from entering, a second waterproof breathable film 28 is arranged between the second air outlet interface and the first through hole.

Further, the air inlet 251 of the top case 25 communicates with the outside and is provided with a sampling pipe 30 extending to a sampling point. Wherein the sampling tube 30 is a soft rubber tube.

Further, the pumped gas detector according to the embodiment of the present invention further includes a second circuit board (not shown in the drawings) for controlling other devices, and a power supply battery (not shown in the drawings) for supplying power, and the second circuit board is electrically connected to the control button 14, the power supply battery, and the indicator light 15. The bottom plate 21 of the pumping section 20 is provided with a first circuit board 210, and the first circuit board 210 is electrically connected to the electronic pump 23. Three probes are welded on the first circuit board 210, the second circuit board is provided with corresponding metal contacts, the probes are contacted with the metal contacts during assembly, the first circuit board 210 is electrically connected with the second circuit board, and the electronic pump 23 is electrified. Wherein the first circuit board 210 and the second circuit board are both PCB boards.

The two ends of the bottom shell 21 and the inner side of the top shell 25 are provided with buckle structures, the buckle structures are provided with waterproof structures, and sealing rubber rings can also be added. After the devices are arranged at the corresponding positions through the position relation, the devices are pressed forcibly to be buckled. Further, screw holes are formed in the bottom shell 21 and the top shell 25, the screws are tightened after the bottom shell 21 and the top shell 25 are fastened, and the assembly of the pumping unit 20 is completed. Further, the pump section 20 is mounted on the first housing 11 of the gas detection apparatus body 10, and two screws are screwed to complete the assembly.

Further, the first housing 11 of the gas pumping detector of the present invention is provided with a clamping portion 16 at an end opposite to the pumping portion 20, so as to be more convenient for carrying and using.

Furthermore, the gas-pumped detector of the present invention is further provided with a speaker and a motor (not shown in the figure) for performing sound and vibration prompts to enhance the prompting function.

Further, the first housing 11 of the gas pumping detector of the present invention is further provided with a charging interface (not shown in the figure).

The working principle of the pump gas detector of the embodiment of the utility model is as follows: the user starts the machine and adjusts the parameters by means of the control buttons 14, the sampling tube 30 is inserted into the area to be examined and the gas-pumping detector starts to operate. The gas in the area to be detected sequentially passes through the sampling tube 30, the gas inlet 251 of the top shell 25, the adapter 29, the first gas inlet interface 2411 of the gas circuit connecting piece 24, the first cavity 241, the first gas outlet interface 2412, the electronic pump 23, the second gas inlet interface 2421, the second cavity 242, the second gas outlet interface, the first through hole, the gas circuit slot 221 (gas circuit channel), the third through hole 271, the second through hole 211 and the gas inductor group 12. The gas sensor group 12 detects gas and gives a prompt through the alarm lamp 15 and the display module 13 or other prompt modes.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. A pumping gas detector is characterized by comprising a gas detector body and a pumping part;

2. The pumped gas detector of claim 1, wherein a second waterproof gas-permeable membrane is disposed between the second outlet port and the first through-hole.

3. A pumped gas detector as claimed in claim 1, wherein said first inlet port is provided with an adapter, one end of said adapter being sealingly connected to said first inlet port, the other end of said adapter being sealingly connected to said inlet port of said top housing.

4. The pumped gas detector of claim 3, wherein the inlet port of the top housing is provided with a sampling tube for extending to a gas sampling point.

5. The pumped gas detector according to claim 1, wherein said set of gas sensors includes four gas sensors, said bottom shell has four second through holes corresponding to said four gas sensors, and said first sealing rubber pad has said third through hole corresponding to each of said second through holes.

6. The pumped gas detector of claim 5, wherein each of the four gas sensors is H₂S gas sensor, CO gas sensor, O₂Gas sensor, combustible gas sensor.

7. The gas pumping detector according to claim 1, wherein the pumping section further comprises a first circuit board disposed on a side of the pump bottom casing facing the first casing, the first circuit board being electrically connected to the electronic pump, the first circuit board having a probe soldered thereto, the probe being connected to the second circuit board of the gas detector body.

8. The pumped gas detector of claim 1, wherein the first housing includes a display module and control buttons.

9. The pumped gas detector of claim 1, further comprising a power supply battery, an indicator light.

10. A pumped gas detector as claimed in any of claims 7 to 9, wherein said second circuit board is further electrically connected to said display module, control buttons, power supply batteries, indicator lights.