External filtering device for pumping type gas detector

Abstract

The utility model provides an external filtering device for a pumping type gas detector, which comprises a filtering connecting seat, a cleaning and filtering assembly, a sampling filter assembly and an exhaust pipe, the cleaning and filtering assembly and the exhaust pipe are respectively connected with the filtering connecting seat, the filtering connecting seat is provided with a connecting part, the connecting part can be connected with the pumping type gas detector, and the sampling filter assembly is connected with the sampling filter assembly. The sampling filter assembly comprises a sampling filter body and a sampling connecting pipe, the two ends of the sampling connecting pipe are connected with the filter connecting base and the sampling filter body respectively, and the sampling connecting pipe is made of stainless steel. The gas detector has the advantages that the problem that an existing pump suction type gas detector is slow in response to detection of gas with high adsorbability can be effectively solved, the pipeline is made of stainless steel, the inner surface of the pipeline is smooth, attachment points and friction force of gas molecules on the surface are reduced, the possibility that the gas with the high adsorbability is adsorbed to the wall of the pipeline is reduced, and the gas detector is more stable and reliable. The gas detection response time is shortened, and the user experience and the product competitiveness are improved.

Description

Technical Field

[0001] This utility model relates to the field of gas detector technology, specifically to an external filter device for a pump-type gas detector. Background Technology

[0002] A gas alarm detector is an alarm signal device used in dangerous locations to send warning signals to people through sound and various lights. In many industrial fields, such as petroleum, petrochemical, metallurgy, chemical, and pharmaceutical industries, if effective detection is not performed, the generation of large amounts of flammable, explosive, toxic, and harmful gases can cause great harm to people's lives, property, and production safety.

[0003] Currently, commonly used pump-suction detectors in the industry require gas filtration before detection to improve accuracy. The filtration devices typically use rubber tubing, which is effective for detecting common toxic gases quickly and sensitively. However, for gases with strong adsorption properties, such as ammonia, vinyl chloride, and chlorine, the gas being detected is first adsorbed onto the tubing wall before entering the sensor. This method results in slow detection times, preventing the sensor from responding quickly enough to protect the safety of the site. It fails to meet user experience requirements and hinders product competitiveness. Utility Model Content

[0004] To address the problems in the prior art, this utility model provides an external filter device for a pump-suction gas detector, which solves the problem of slow response when detecting gases with strong adsorption properties in existing pump-suction gas detectors.

[0005] This utility model discloses an external filtration device for a pump-suction gas detector, comprising a filter connector, a cleaning filter assembly, a sampling filter assembly, and an exhaust pipe. The cleaning filter assembly and the exhaust pipe are respectively connected to the filter connector. The filter connector is provided with a connecting part that can be connected to the pump-suction gas detector. The sampling filter assembly includes a sampling filter body and a sampling connecting pipe. Both ends of the sampling connecting pipe are respectively connected to the filter connector and the sampling filter body. The sampling connecting pipe is made of stainless steel.

[0006] This utility model is further improved by making the exhaust pipe out of stainless steel.

[0007] This invention is further improved by providing a passivation film on the inner wall of the sampling connecting tube.

[0008] This utility model is further improved by having a connecting part that is a connecting cylinder set on a filter connecting seat, with an external thread on the outside of the connecting cylinder, and the sampling filter connecting seat is threadedly connected to the pump-type gas detector.

[0009] This utility model is further improved by providing an exhaust connection sealing head at the connection between the exhaust pipe and the filter connection seat, and an exhaust mounting seat that is installed on the filter connection seat in conjunction with the exhaust connection sealing head.

[0010] This utility model is further improved by providing a sampling sealing sleeve at the connection between the sampling connecting tube and the filter connecting seat, and a sampling sleeve mounting seat that cooperates with the sampling sealing sleeve on the filter connecting seat.

[0011] This utility model is further improved by providing a sampling connection sealing head at the connection between the sampling connection tube and the sampling filter body, and a sampling mounting seat that cooperates with the sampling connection sealing head on the sampling filter body.

[0012] This utility model is further improved by providing a moisture-removing and dust-proof filter material inside the sampling filter body, and providing a sampling air inlet at the lower end of the sampling filter body.

[0013] This utility model is further improved, and the cleaning filter assembly includes a cleaning filter body and a cleaning connecting pipe. The two ends of the cleaning connecting pipe are respectively connected to the filter connecting seat and the cleaning filter body. The cleaning connecting pipe is made of stainless steel.

[0014] This utility model is further improved by providing activated carbon for cleaning within the main body of the filter, and providing a cleaning air inlet at the lower end of the main body of the filter.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides an external filter device for a pump-suction gas detector. By adopting its structure, it can effectively solve the problem of slow response of existing pump-suction gas detectors to gases with strong adsorption properties. By using this product structure and the stainless steel pipe, the inner surface of the pipe can be made smooth, reducing the adhesion points and friction of gas molecules on the surface, shortening the gas detection response time for gases with strong adsorption properties, reducing the possibility of gases with strong adsorption properties adsorbing onto the pipe wall, improving the user experience and the competitiveness of the product. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the external filter device for the pump-type gas detector of this utility model. Detailed Implementation

[0018] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish different objects, not to describe a particular order.

[0019] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, this utility model discloses an external filtering device for a pump-suction gas detector, including a filter connector 1, a cleaning filter assembly, a sampling filter assembly, and an exhaust pipe 2. The cleaning filter assembly and the exhaust pipe 2 are respectively connected to the filter connector 1. The filter connector 1 is provided with a connecting part, which can be connected to the pump-suction gas detector. The sampling filter assembly includes a sampling filter body 3 and a sampling connecting pipe 4. Both ends of the sampling connecting pipe 4 are respectively connected to the filter connector 1 and the sampling filter body 3. The sampling connecting pipe 4 is made of stainless steel.

[0022] By using stainless steel pipes, the inner surface of the pipes becomes smooth, reducing the adhesion points and friction of gas molecules on the surface. This shortens the gas detection response time for gases with strong adsorption properties, reduces the possibility of these gases adsorbing onto the pipe wall, and improves the user experience and product competitiveness.

[0023] The exhaust pipe 2 is made of stainless steel, which prevents highly absorbent gases from being adsorbed into the exhaust pipe 2.

[0024] The connecting part is a connecting cylinder set on the filter connecting seat 1. The outer side of the connecting cylinder is provided with external thread 101. The sampling filter connecting seat 1 is threadedly connected to the gas detector of the built-in pump.

[0025] An exhaust connection sealing head 21 is provided at the connection point between the exhaust pipe 2 and the filter connection seat 1, and an exhaust mounting seat is provided on the filter connection seat 1 to cooperate with the exhaust connection sealing head 21.

[0026] By cooperating with the exhaust connection sealing head 21 and the exhaust mounting seat, the sealing performance at the connection between the exhaust pipe 2 and the filter connection seat 1 can be improved.

[0027] A sampling sealing sleeve 41 is provided at the connection between the sampling connecting tube 4 and the filter connecting seat 1, and a sampling sleeve mounting seat is provided on the filter connecting seat 1 to cooperate with the sampling sealing sleeve 41.

[0028] By cooperating with the sampling sealing sleeve 41 and the sampling sleeve mounting base, the sealing performance at the connection between the sampling connecting pipe 4 and the filter connecting base 1 can be improved.

[0029] A sampling connection sealing head 42 is provided at the connection between the sampling connection tube 4 and the sampling filter body 3, and a sampling mounting seat that cooperates with the sampling connection sealing head 42 is provided on the sampling filter body 3.

[0030] By cooperating with the sampling connection sealing head 42 and the sampling mounting base, the sealing performance at the connection between the sampling connection tube 4 and the sampling filter body 3 can be improved.

[0031] The sampling filter body 3 is equipped with a moisture-removing and dust-proof filter material, and the sampling air inlet is located at the lower end of the sampling filter body 3.

[0032] By using dehumidifying and dust-proofing filter materials, the gas drawn in through the sampling inlet can be filtered to remove moisture and impurities, allowing only the target gas to be transmitted to the gas detector.

[0033] The cleaning filter assembly includes a cleaning filter body 5 and a cleaning connecting pipe 6. The two ends of the cleaning connecting pipe 6 are connected to the filter connecting seat 1 and the cleaning filter body 5, respectively. The cleaning connecting pipe 6 is made of stainless steel.

[0034] The cleaning connection tube 6 is made of stainless steel, which prevents highly absorbent gases from being adsorbed into the cleaning connection tube 6.

[0035] The cleaning filter body 5 is equipped with activated carbon, and a cleaning air inlet is provided at the lower end of the cleaning filter body 5.

[0036] The air is filtered by activated carbon to remove various components, and the pure gas is transmitted to the gas detector. After the detection is completed, clean air is supplied to the gas detector, and the target gas in the detection chamber of the gas detector is blown out from the exhaust pipe 2 to clean the inside of the gas detector.

[0037] A cleaning sealing sleeve 61 is provided at the connection between the cleaning connecting pipe 6 and the filter connecting seat 1. A cleaning sleeve mounting seat that mates with the cleaning sealing sleeve 61 is provided on the filter connecting seat 1. A cleaning connecting sealing head 62 is provided at the connection between the cleaning connecting pipe 6 and the cleaning filter body 5. A cleaning mounting seat that mates with the cleaning connecting sealing head 62 is provided on the cleaning filter body 5.

[0038] By cooperating with the cleaning sealing sleeve 61 and the cleaning sleeve mounting base, the sealing performance at the connection between the cleaning connecting pipe 6 and the filter connecting base 1 can be improved. By cooperating with the cleaning connecting sealing head 62 and the cleaning mounting base, the sealing performance at the connection between the cleaning connecting pipe 6 and the cleaning filter body 5 can be improved.

[0039] The inner walls of the exhaust pipe 2, sampling connection pipe 4 and cleaning connection pipe 6 are provided with a passivation film. By setting the passivation film, the corrosion resistance and chemical stability of stainless steel can be enhanced, the surface active sites can be reduced, and the possibility of gas adsorption on the pipe wall can be reduced.

[0040] As can be seen from the above, the beneficial effects of the present invention are: by adopting its mechanism, it can effectively solve the problem of slow response of existing pump-suction gas detectors to gases with strong adsorption properties. By using this product structure and the stainless steel pipe, the inner surface of the pipe can be made smooth, reducing the adhesion points and friction of gas molecules on the surface, shortening the gas detection response time for gases with strong adsorption properties, reducing the possibility of gases with strong adsorption properties adsorbing onto the pipe wall, improving the user experience and the competitiveness of the product.

[0041] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. An external filtering device for a pump-suction gas detector, used to filter and transmit gas to the pump-suction gas detector, characterized in that: The application relates to a filter connecting seat, a cleaning filter assembly, a sampling filter assembly and an exhaust pipe, wherein the cleaning filter assembly and the exhaust pipe are connected with the filter connecting seat respectively, a connecting part is arranged on the filter connecting seat, the connecting part can be connected with a pump suction type gas detector, the sampling filter assembly comprises a sampling filter main body and a sampling connecting pipe, the two ends of the sampling connecting pipe are connected with the filter connecting seat and the sampling filter main body respectively, and the sampling connecting pipe is made of stainless steel.

2. An external filter device for a pump gas detector according to claim 1, characterized in that: The material of the exhaust pipe is stainless steel.

3. An external filter device for a pump gas detector according to claim 1, characterized in that: A passivation film is arranged on the inner wall of the sampling connecting pipe.

4. The external filter for a pump gas detector of claim 1, wherein: The connecting part is a connecting cylinder arranged on the filter connecting seat, an outer thread is arranged on the outer side of the connecting cylinder, and the sampling filter connecting seat is screw-connected with the pump suction type gas detector.

5. The external filter for a pump gas detector of claim 1, wherein: An exhaust connecting sealing head is arranged on the exhaust pipe at the connecting position with the filter connecting seat, and an exhaust mounting seat is arranged on the filter connecting seat and matched with the exhaust connecting sealing head.

6. An external filter for a pump gas detector according to claim 1, wherein: A sampling sealing sleeve is arranged on the sampling connecting pipe at the connecting position with the filter connecting seat, and a sampling sleeve mounting seat is arranged on the filter connecting seat and matched with the sampling sealing sleeve.

7. The external filter for a pump gas detector of claim 1, wherein: A sampling connecting sealing head is arranged on the sampling connecting pipe at the connecting position with the sampling filter main body, and a sampling mounting seat is arranged on the sampling filter main body and matched with the sampling connecting sealing head.

8. The external filter for a pump gas detector of claim 1, wherein: Dehumidifying and dust separating filter material is arranged in the sampling filter main body, and a sampling air inlet is arranged at the lower end of the sampling filter main body.

9. An external filter device for a pump gas detector according to any one of claims 1-8, characterized in that: The cleaning filter assembly comprises a cleaning filter main body and a cleaning connecting pipe, the two ends of the cleaning connecting pipe are connected with the filter connecting seat and the cleaning filter main body respectively, and the cleaning connecting pipe is made of stainless steel.

10. An external filter device for a pump gas detector according to claim 9, characterized in that: Filter activated carbon is arranged in the cleaning filter main body, and a cleaning air inlet is arranged at the lower end of the cleaning filter main body.

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