Gas sensor device realizing replaceable filter

Abstract

The utility model relates to a gas sensor device realizing replaceable filter, which comprises a main body, pins, a cover and a filter, the main body comprises a second air hole, a limiting groove and a platform, the cover comprises a first air hole, a buckle and a cavity, the pins are installed at the bottom of the main body, the cover is fixed on the main body, and the first air hole is communicated with the first air hole. The filter is placed in the cavity, the second air hole corresponds to the first air hole in a matched mode, the limiting groove corresponds to the buckle in a matched mode, and the platform is matched with the cavity. By adopting the gas sensor device capable of replacing the filter, the filter of the gas sensor can be replaced, the problem of failure of the filter of the gas sensor is solved, the application field of the gas sensor is expanded, the service life of the sensor is prolonged, and the long-term stability of the sensor is improved. And a buckle and a limiting groove are arranged between the cover and the main body, so that the assembly is convenient, and meanwhile, a stabilizing effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas sensor, especially to the field of gas sensor filter and its structure, specifically points to a kind of gas sensor device of realizing replaceable filter. BACKGROUND

[0002] Gas sensor is widely used in petroleum, chemical industry, ship, mine, energy and other fields due to its high sensitivity, fast response time, small size and light weight, and is a relatively new sensor in today's social development, also known as the focus and hotspot direction of research by experts and researchers.

[0003] However, gas sensor is sensitive to impurity gas during use, which may cause cross interference, false alarm and even permanent failure due to poisoning, posing great challenges and difficulties to research and application. Currently, filters are mainly used to filter impurity gas and prevent it from entering the sensor. Carbon-containing carbon wool, carbon powder, carbon paper and molecular sieve powder or solid filter are used to filter large molecules or irregular structure molecules, which can solve the cross interference and poisoning problem of the sensor to some extent.

[0004] The filter in the current market and literature reported gas sensor is placed inside the sensor, and the filter may fail. However, due to the small size and narrow space of the gas sensor, the size and space of such filter are limited, and the failure of the filter has a great impact on the service life and stability of the sensor, thus limiting the application and effect of the filter.

[0005] In order to solve the problem of filter failure and the resulting short service life of the sensor, a new type of gas sensor structure is urgently needed to improve the service life and long-term stability of the sensor. SUMMARY

[0006] The utility model aims at overcoming the above-mentioned shortcomings of prior art, and provides a gas sensor device with long service life, high stability and wide application range, which can replace the filter.

[0007] In order to achieve the above-mentioned purpose, the gas sensor device with replaceable filter of the utility model is as follows:

[0008] The implementation of the gas sensor device with replaceable filter mainly comprises a main body, a pin, a cover and a filter, the main body comprises a second air hole, a limiting slot and a platform, the cover comprises a first air hole, a buckle and a cavity, the pin is installed at the bottom of the main body, the cover is fixed on the main body, the filter is placed in the cavity, the second air hole is matched with the first air hole, the limiting slot is matched with the buckle, and the platform is matched with the cavity.

[0009] Preferably, the device further comprises fixing glue, and the cover is fixed on the main body through the fixing glue.

[0010] Preferably, the device further comprises a waterproof and breathable film, and the waterproof and breathable film is installed on the cover.

[0011] Preferably, the size of the second air hole is matched with the size of the first air hole, and the number and size of the limiting slot are matched with the number and size of the buckle.

[0012] Preferably, the number of the buckle is three or more, and is consistent with the number of the limiting slot.

[0013] Preferably, the number of the pin is two or more.

[0014] Preferably, the filter is one or a combination of carbon powder, carbon cotton, carbon cloth and molecular sieve.

[0015] Preferably, the fixing glue is one or a combination of back glue, silica gel, double-sided adhesive tape and pouring sealant.

[0016] The gas sensor device with replaceable filter can realize replacement of the filter of the gas sensor, solve the problem of failure of the filter of the gas sensor, expand the application field of the gas sensor, and improve the service life and long-term stability of the sensor. The buckle and the limiting slot are arranged between the cover and the main body, so that the cover and the main body are assembled conveniently and stably. The fixing glue can fix the cover and prevent the cover from falling off, and can protect the filter from being damaged by liquid such as water droplets or dust. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 FIG. 1 is a structural schematic view of the gas sensor device with replaceable filter of the present application.

[0018] Fig. 2 FIG. 2 is a central section view of the gas sensor device with replaceable filter of the present application.

[0019] Fig. 3 FIG. 3 is a top view of the main body of the gas sensor device with replaceable filter of the present application.

[0020] Fig. 4 The structure diagram of the cover of the gas sensor device with replaceable filter.

[0021] Reference signs:

[0022] 1 main body

[0023] 2 pin

[0024] 3 cover

[0025] 4 fixing glue

[0026] 5 filter

[0027] 6 waterproof and breathable film

[0028] 1-1 second air hole

[0029] 1-2 limiting groove

[0030] 1-3 platform

[0031] 3-1 first air hole

[0032] 3-2 buckle

[0033] 3-3 chamber DETAILED DESCRIPTION

[0034] In order to more clearly describe the technical content of the utility model, the following further description is made in combination with specific embodiments.

[0035] The utility model discloses a gas sensor device with replaceable filter, which comprises a main body 1, a pin 2, a cover 3 and a filter 5.

[0036] As a preferred embodiment of the utility model, the device further comprises fixing glue 4, and the cover 3 is fixed on the main body 1 through the fixing glue 4.

[0037] As a preferred embodiment of the utility model, the device further comprises a waterproof and breathable film 6, and the waterproof and breathable film 6 is installed on the cover 3.

[0038] As the preferred embodiment of the utility model, the size of the second air hole 1-1 corresponds to the first air hole 3-1, the number and size of the limiting groove 1-2 correspond to the buckle 3-2.

[0039] As the preferred embodiment of the utility model, the number of the buckle 3-2 is three or more, and is consistent with the number of the limiting groove 1-2.

[0040] As the preferred embodiment of the utility model, the number of the pin 2 is two or more.

[0041] As the preferred embodiment of the utility model, the filter 5 is one or a combination of more than one of carbon powder, carbon wool, carbon cloth and molecular sieve.

[0042] As the preferred embodiment of the utility model, the fixing glue 4 is one or more of back glue, silica gel, double-sided tape and pouring sealant.

[0043] In the specific embodiment of the utility model, a novel gas sensor structure with replaceable filter is provided, which solves the problem of filter failure of the gas sensor and improves the service life and stability of the gas sensor.

[0044] As shown in Figs. 1-3 The utility model discloses a replaceable filter's gas sensor structure includes main part 1, pin 2, cover 3, first air hole 3-1, buckle 3-2, chamber 3-3, fixed glue 4, filter 5, waterproof breathable membrane 6.

[0045] Main part 1 is provided with second air hole 1-1, limiting groove 1-2 and platform 1-3.Cover 3 includes first air hole 3-1, buckle 3-2 and chamber 3-3.

[0046] Main part 1 and cover 3 can be one of ABS, PC, PP, stainless steel and the like.Pin 2 is one or more metal alloy materials of Au, Pt, Ag, Ni, Fe, Sn, Si, Cu, Ta, Ti, and pin 2 is provided with two or more.

[0047] Fixed glue 4 is one or more of back glue, silica gel, double-sided tape, pouring sealant, etc., which is used to fix cover 3 on main part 1, and can be easily disassembled and taken out for replacement after filter 5 fails.Filter 5 is one or more combination materials of carbon powder, carbon wool, carbon cloth and molecular sieve.

[0048] The size of the second air hole 1-1 corresponds to the first air hole 3-1 of cover 3, the number and size of the limiting groove 1-2 correspond to the buckle 3-2, the platform 1-3 cooperates with the chamber 3-3, and the filter 5 is placed.

[0049] The filter 5 is placed in the chamber 3-3, the size of the chamber 3-3 is designed according to the actual gas sensor performance, the buckle 3-2 is provided with three or more than three, cooperates with the limiting groove 1-2, and the number of the two is consistent, can prevent the cover 3 from moving left and right, and further enhances the stability of the cover 3.

[0050] The fixing glue 4 and the waterproof and breathable film 6 can be integrated or separately arranged, and the waterproof and breathable film 6 can prevent the filter from being damaged by water droplets or dust.

[0051] The structure facilitates replacement of the filter, solves the problem of filter failure, does not damage the gas sensor, and the replaceable filter can prevent impurity gas from damaging the sensor, thereby improving the service life of the sensor, and is suitable for catalytic combustion sensors, semiconductor sensors, electrochemical sensors, infrared sensors and the like.

[0052] The specific implementation scheme of the embodiment can be referred to the related description in the above embodiment, which will not be repeated here.

[0053] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0054] It should be noted that, in the description of the utility model, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the description of the utility model, unless otherwise specified, "a plurality of" means at least two.

[0055] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The gas sensor device with replaceable filter of the utility model can realize the replacement of the gas sensor filter, solve the problem of gas sensor filter failure, expand the application field of gas sensor, improve the service life and long-term stability of the sensor. The buckle and the limiting groove are arranged between the cover and the main body, which is convenient for assembly and plays a stabilizing role. The fixing glue can fix the cover to prevent it from falling off and protect the filter from being damaged by water droplets and other liquids or dust.

[0057] In this specification, the present application has been described with reference to specific embodiments thereof. It is, however, apparent that various modifications and changes can be made thereto without departing from the spirit and scope of the present application. Therefore, the specification and drawings should be considered in an illustrative, and not a restrictive, sense.

Claims

1. A gas sensor device for implementing a replaceable filter, characterized in that, The device includes a main body, pins, a cover, and a filter. The main body includes a second air hole, a limiting groove, and a platform. The cover includes a first air hole, a snap fastener, and a chamber. The pins are installed at the bottom of the main body. The cover is fixed to the main body. The filter is placed in the chamber. The second air hole matches the first air hole. The limiting groove matches the snap fastener. The platform cooperates with the chamber.

2. The gas sensor device for implementing a replaceable filter according to claim 1, characterized in that, The device also includes a fixing adhesive, which secures the cover to the main body.

3. The gas sensor device for realizing a replaceable filter according to claim 1, characterized in that, The device also includes a waterproof and breathable membrane, which is mounted on the cover.

4. The gas sensor device for implementing a replaceable filter according to claim 1, characterized in that, The second air hole corresponds to the size of the first air hole, and the number and size of the limiting groove and the buckle correspond to each other.

5. The gas sensor device for implementing a replaceable filter according to claim 1, characterized in that, The number of the buckles is three or more, and the number of the limiting slots is the same.

6. The gas sensor device for implementing a replaceable filter according to claim 1, characterized in that, The number of pins is two or more.

7. The gas sensor device for implementing a replaceable filter according to claim 2, characterized in that, The fixing adhesive is one or more of the following: adhesive backing, silicone, double-sided adhesive, and potting compound.

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