CN211061501U - Dual-purpose gas circuit structure for portable gas detector - Google Patents
Dual-purpose gas circuit structure for portable gas detector Download PDFInfo
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- CN211061501U CN211061501U CN201921722592.2U CN201921722592U CN211061501U CN 211061501 U CN211061501 U CN 211061501U CN 201921722592 U CN201921722592 U CN 201921722592U CN 211061501 U CN211061501 U CN 211061501U
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Abstract
The utility model discloses a dual-purpose type gas circuit structure for portable gas detector, the dual-purpose type gas circuit structure includes an air pump, the air inlet of air pump communicates with the external world through an intake pipe, the gas outlet of air pump communicates with the air inlet of an air flow pipeline through an outlet duct, the gas outlet of air flow pipeline connects an air chamber cover, the air chamber cover has a plurality of air chambers along the circumference equipartition of air flow pipeline, the air chamber cover surface is equipped with a plurality of air flow guide slots for communicating air chamber and air flow pipeline gas outlet, the air chamber cover is covered with a row of air inlet covers, and the row of air inlet covers is equipped with a plurality of row of inlet ports that communicate with one end of air chamber respectively, install waterproof filtration membrane between; and a sensor for gas detection is arranged at the other end of any gas chamber, the gas detection end of the sensor is butted with the gas chamber, and the other end of the sensor is arranged on a PCB (printed circuit board). The utility model discloses technical scheme realizes that the pump suction formula and two kinds of gaseous detection methods of diffusion formula satisfy different testing environment.
Description
Technical Field
The utility model relates to a gas detection appearance field, in particular to dual-purpose type gas circuit structure for portable gas detection appearance.
Background
With the rapid development of industrial technologies, environmental issues have been raised on schedule and gradually drawn attention from various circles. The current instruments for detecting environmental parameters are mainly: diffusion type gas detector, pump suction type gas detector, fixed type gas detector. Different instruments are used according to different environments, detection parameters are displayed through instrument screens, and an alarm can be given out after a certain threshold value is exceeded.
The gas circuit of the current pump suction type gas detector is widely accepted in a fast and efficient detection mode, and is the mainstream trend of the current market. However, the air pump or the air inlet circuit is abnormal or fails, so that the equipment cannot be used, and workers are forced to interrupt or replace other equipment for detection. This also causes a lot of trouble to the worker. The diffusion type gas detector is low in power consumption and long in operation time, and although the gas pump, the gas inlet circuit and the like are not worried about in a severe environment, the detection speed and the corresponding time cannot be compared with those of a pump suction type gas detector.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a dual-purpose type gas circuit structure for portable gas detection appearance aims at improving the gas circuit structure of traditional portable gas detection appearance, realizes that the pump suction formula and two kinds of gaseous detection methods of diffusion formula satisfy different detection ring border.
In order to achieve the above object, the utility model provides a dual-purpose gas circuit structure for a portable gas detector, which is installed in a portable gas detector casing, the dual-purpose gas circuit structure comprises an air pump, the air inlet of the air pump is communicated with the outside through an air inlet pipe, the air outlet of the air pump is communicated with the air inlet of an air flow pipeline through an air outlet pipe, the air outlet of the air flow pipeline is connected with an air chamber cover, the air chamber cover is evenly provided with a plurality of air chambers along the circumferential direction of the air flow pipeline, the surface of the air chamber cover is provided with a plurality of air flow guide grooves for communicating the air chambers and the air outlet of the air flow pipeline, the air chamber cover is covered with an exhaust cover, the exhaust cover and the air flow guide grooves form a closed cavity, and the exhaust cover is provided with a plurality of exhaust holes respectively communicated with one end of the, a waterproof filtering membrane is arranged between the air exhaust hole and the air chamber; and a sensor for gas detection is arranged at the other end of any gas chamber, the gas detection end of the sensor is butted with the gas chamber, and the other end of the sensor is arranged on a PCB (printed circuit board).
Preferably, the number of the air cells is set to four.
Preferably, a sealing rubber ring is arranged between the sensor and the air chamber.
Preferably, any one of the air exhaust holes comprises a plurality of air exhaust holes, and the plurality of air exhaust holes are arranged in a honeycomb shape.
Preferably, the air inlet pipe is communicated with the outside through a water trap filter, and the water trap filter is connected with the air inlet pipe through a connector.
Compared with the prior art, the beneficial effects of the utility model are that: the gas circuit structure of traditional portable gas detection appearance has been improved, adopts the dual gas circuit structure of pump suction formula and diffusion formula, is adapted to different operational environment, avoids because the gas circuit blocks up the condition that leads to the unable use of gas detection appearance, guarantees to carry out gas detection high-efficiently conveniently, guarantees operation personnel's life safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the dual-purpose gas circuit of the present invention;
FIG. 2 is an exploded view of the dual-purpose gas circuit of the present invention;
FIG. 3 is a schematic structural view of the air chamber cover of the present invention;
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
Referring to fig. 1 and 2, the dual-purpose gas circuit structure provided in this embodiment is installed in a casing (not shown in the figure) of a portable gas detector, and includes an air pump 1, an air inlet of the air pump 1 is communicated with the outside through an air inlet pipe 2, an air outlet of the air pump 1 is communicated with an air inlet of an air flow pipeline 4 through an air outlet pipe 3, an air chamber cover 5 is connected to an air outlet of the air flow pipeline 4, a plurality of air chambers 7 are uniformly distributed on the air chamber cover 5 along the circumferential direction of the air flow pipeline 4, a plurality of air flow guide grooves 6 for communicating the air chambers 7 with the air outlets of the air flow pipeline 4 are arranged on the surface of the air chamber cover 5, a row of air inlet covers 8 are arranged on the air chamber cover 5, the row of air inlet covers 8 and the air flow guide grooves 6 form a closed cavity, and a plurality of air inlet holes 9 respectively communicated with one ends of the air chambers 7 are arranged on the row of, a waterproof filtering membrane 10 is arranged between the air exhaust hole 9 and the air chamber 7; and a sensor 11 for gas detection is arranged at the other end of any one of the gas chambers 7, the gas detection end of the sensor 11 is in butt joint with the gas chamber 7, and the other end of the sensor 11 is arranged on a PCB 12.
The signal output end of the sensor 11 is connected to the signal receiving end of the PCB 12, and the signal output end of the PCB 12 is connected to the control system inside the gas detector, which is an existing circuit structure and is not an inventive point of this embodiment, and further description is omitted here.
It should be noted that the utility model discloses a dual-purpose type gas circuit structure, under the normal conditions, adopts the pump to inhale formula gas circuit structure and carries out gaseous detection, can guarantee gaseous high efficiency and the accuracy that detects. When the pump suction type gas circuit is blocked or damaged, a new gas detector is not needed to be replaced, and only the diffusion type gas circuit structure gas inlet is needed to be detected, so that the use is convenient, and the safety of operators is effectively guaranteed.
Specifically, when the pump suction type air path structure is used, the air pump 1 is opened, the air pump 1 sucks the external gas to be detected through the air inlet pipe 2, then conveys the gas to the air flow pipeline 4 through the air outlet pipe 3, discharges the gas to the air chamber cover 5 through the air outlet of the air flow pipeline 4, flows to each air chamber 7 through each air flow guide groove 6, and contacts with the sensor 11 in each air chamber 7, so that the sensor 11 detects the gas in each air chamber 7. With the continuous suction of the air pump 1, the air in the air chamber 7 is discharged through the air discharge hole 9 communicated with the air chamber 7. It should be noted that the exhaust air hood 8 is covered on the surface of the air chamber cover 5 to seal each air flow guide groove 6 into a sealed cavity, and one end of the sealed cavity is communicated with the air outlet of the air flow pipeline 4, and the other end is communicated with each air chamber 7, so that the outside gas to be detected discharged through the air flow pipeline 4 can smoothly enter each air chamber 7 for detection.
Further, when the diffusion type air path structure is used, the air pump 1 stops working, and the outside gas to be detected can enter each air chamber 7 communicated with the outside air path structure through the exhaust air inlet hole 9 and is in contact with the sensor 11 for detection, so that the condition that the air path structure is blocked or the air pump 1 is damaged and cannot work is prevented. The air exhaust hole 9 and the air chamber 7 are provided with the waterproof filtering membrane 10 therebetween, so that external moisture or impurities can be effectively prevented from entering the air chamber 7 and affecting the normal use of the air chamber.
Further, the number of the air chambers 7 is four, so that sufficient detection of air is guaranteed, and the accuracy of air detection is improved.
Furthermore, a sealing rubber ring 13 is arranged between the sensor 11 and the air chamber 7, so that the sealing performance of connection between the sensor 11 and the air chamber 7 is ensured, gas leakage is prevented, the sensor 11 is in full contact with gas, and the detection precision is improved.
Furthermore, any one of the air exhaust holes 9 comprises a plurality of air exhaust holes 16, and the plurality of air exhaust holes 16 are arranged in a honeycomb shape, so that external large impurities are prevented from entering the air chamber 7 from the air exhaust holes 9, the air path is prevented from being blocked, and the normal use of the air exhaust holes is ensured.
Further, intake pipe 2 is through a water trap filter 14 and external intercommunication, just water trap filter 14 through a connector 15 with intake pipe 2 connects, through setting up water trap filter 14, can carry out waterproof and dustproof processing to the gas that gets into the gas circuit, prevents that the gas circuit from blockking up, guarantees gas detector's normal use, improves its life.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (5)
1. A dual-purpose gas circuit structure for a portable gas detector, which is arranged in a shell of the portable gas detector, it is characterized in that the dual-purpose gas path structure comprises a gas pump, the gas inlet of the gas pump is communicated with the outside through a gas inlet pipe, the air outlet of the air pump is communicated with the air inlet of an air flow pipeline through an air outlet pipe, the air outlet of the air flow pipeline is connected with an air chamber cover, the air chamber cover is uniformly provided with a plurality of air chambers along the circumferential direction of the air flow pipeline, the surface of the air chamber cover is provided with a plurality of air flow guide grooves for communicating the air chambers with the air outlets of the air flow pipeline, the air chamber cover is covered with a row of air inlet covers which form a closed cavity with the air flow guide groove, the air exhaust and inlet cover is provided with a plurality of air exhaust and inlet holes which are respectively communicated with one end of the air chamber, and a waterproof filtering membrane is arranged between the air exhaust and inlet holes and the air chamber; and a sensor for gas detection is arranged at the other end of any gas chamber, the gas detection end of the sensor is butted with the gas chamber, and the other end of the sensor is arranged on a PCB (printed circuit board).
2. The dual-purpose air passage structure for a portable gas detector as claimed in claim 1, wherein the number of the air chambers is set to four.
3. The dual-purpose gas path structure for a portable gas detector as claimed in claim 1, wherein a sealing rubber ring is installed between the sensor and the gas chamber.
4. The dual-purpose gas path structure for a portable gas detector as recited in claim 1, wherein any one of said gas inlet holes comprises a plurality of gas inlet holes, and wherein said plurality of gas inlet holes are arranged in a honeycomb pattern.
5. The dual-purpose gas path structure for a portable gas detector as claimed in claim 1, wherein the gas inlet tube is connected to the outside through a water trap filter, and the water trap filter is connected to the gas inlet tube through a connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921722592.2U CN211061501U (en) | 2019-10-14 | 2019-10-14 | Dual-purpose gas circuit structure for portable gas detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921722592.2U CN211061501U (en) | 2019-10-14 | 2019-10-14 | Dual-purpose gas circuit structure for portable gas detector |
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| Publication Number | Publication Date |
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| CN211061501U true CN211061501U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921722592.2U Active CN211061501U (en) | 2019-10-14 | 2019-10-14 | Dual-purpose gas circuit structure for portable gas detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062592A (en) * | 2021-01-21 | 2022-02-18 | 安徽赛安安全设备有限责任公司 | Combined multi-gas detection device |
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2019
- 2019-10-14 CN CN201921722592.2U patent/CN211061501U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062592A (en) * | 2021-01-21 | 2022-02-18 | 安徽赛安安全设备有限责任公司 | Combined multi-gas detection device |
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