Filter and assembly method thereof

Abstract

The invention discloses a filter and an assembly method thereof, and relates to the technical field of gas filtration, the filter comprises an upper body, a lower body and a filter membrane, the upper body and the lower body are buckled and connected, the filter membrane is located between the upper body and the lower body, and one end of the upper body far away from the lower body is used for gas inflow; one end of the lower body far away from the upper body is connected with a gas nozzle of a gas detector. According to the gas detector, dust impurities in gas can be filtered, and the service life of the whole gas detector is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of gas filtration, and particularly to a filter and an assembly method thereof. Background Art

[0002] A gas detector is an instrument tool for detecting the concentration of gas leakage. During the use of a gas detector, the working conditions where the gas detector is located are generally not clean gases, and usually contain certain impurities such as water vapor and dust. For some acidic or alkaline gases, once they are incorporated into the water vapor, they are prone to combine with the dust, and then easily block the gas path of the gas detector, and corrode the gas path and the sensor, resulting in abnormal operation of the equipment and a short service life. Summary of the Invention

[0003] The purpose of the present invention is to provide a filter and an assembly method thereof to solve the problems existing in the above-mentioned prior art, realize the filtration of dust impurities in the gas, and extend the overall service life of the gas detector.

[0004] To achieve the above purpose, the present invention provides the following solutions: The present invention provides a filter, including an upper body, a lower body and a filter membrane. The upper body and the lower body are snap-connected, and the filter membrane is located between the upper body and the lower body. One end of the upper body away from the lower body is used for gas inlet, and one end of the lower body away from the upper body is used for connecting the gas nozzle of the gas detector.

[0005] Preferably, the upper body includes an upper connector and an upper disc. The first end of the upper connector is used for gas inlet, and the second end of the upper connector is connected to the upper disc; the lower body includes a lower connector and a lower disc. The first end of the lower connector is used for connecting the gas nozzle of the gas detector, and the second end of the lower connector is connected to the lower disc; the upper disc and the lower disc can be snap-connected, and the interiors of the upper connector and the lower connector are in communication.

[0006] Preferably, a plurality of upper reinforcing ribs are provided between the outer wall of the upper connector and the upper end face of the upper disc; a plurality of lower reinforcing ribs are provided between the outer wall of the lower connector and the lower end face of the lower disc.

[0007] Preferably, the cross-sections of the upper reinforcing ribs and the lower reinforcing ribs are both triangular.

[0008] Preferably, both the upper connector and the lower connector are taper connectors.

[0009] Preferably, the lower body and the gas nozzle of the gas detector are connected by a hose.

[0010] Preferably, the filter membrane is made of a waterproof and breathable material.

[0011] Preferably, the smooth side of the filter membrane faces the air inlet end of the upper body.

[0012] Preferably, the model of the filter membrane is 35*27mm.

[0013] The present invention also provides an assembly method of a filter according to any one of the above technical solutions, including the following steps: S1. Place the filter membrane on the lower body, and make the smooth side of the filter membrane face the air inlet end of the upper body, and press the outer edge of the filter membrane flat by hand; S2. Snap the upper body onto the lower body and clamp it with a fixture; S3. Use ultrasonic welding technology to press the outer periphery of the connection between the upper body and the lower body.

[0014] The present invention has achieved the following technical effects compared with the prior art: For the filter and its assembly method provided by the present invention, the upper body and the lower body are snap-connected, and the filter membrane is located between the upper body and the lower body, so as to realize the pressing and fixing of the filter membrane. One end of the upper body far from the lower body is used for air intake to introduce gas between the upper body and the lower body, and the gas is filtered by the filter membrane. One end of the lower body far from the upper body is used to connect the nozzle of the gas detector, so that the dust and liquid water in the gas are filtered out before the gas enters the gas detector, avoiding blockage of the gas path of the gas detector. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the filter in Embodiment 1; Figure 2 It is a cross-sectional view of the filter in Embodiment 1; In the figure: 1-upper body, 11-upper connector, 12-upper disc, 13-upper reinforcing rib; 2-lower body, 21-lower connector, 22-lower disc, 23-lower reinforcing rib; 3-filter membrane. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] The object of the present invention is to provide a filter and its assembly method to solve the problems existing in the prior art, realize the filtration of dust impurities in the gas, and extend the service life of the overall gas detector.

[0019] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Embodiment 1 As Figure 1 - Figure 2 shown, this embodiment provides a filter. The upper body 1 and the lower body 2 are snap-connected, and the filter membrane 3 is located between the upper body 1 and the lower body 2, thereby realizing the pressing and fixing of the filter membrane 3. One end of the upper body 1 far from the lower body 2 is used for air intake to introduce gas between the upper body 1 and the lower body 2, and the gas is filtered through the filter membrane 3. One end of the lower body 2 far from the upper body 1 is used to connect the nozzle of the gas detector, so that the dust and liquid water in the gas are filtered out before the gas enters the gas detector, avoiding blockage of the gas path of the gas detector.

[0021] Specifically, the upper body 1 includes an upper connector 11 and an upper disc 12. The first end of the upper connector 11 is used for air intake, and the second end of the upper connector 11 is connected to the upper disc 12, and an air intake channel is formed inside the upper body 1; the lower body 2 includes a lower connector 21 and a lower disc 22. The first end of the lower connector 21 is used to connect the nozzle of the gas detector, and the second end of the lower connector 21 is connected to the lower disc 22; the upper disc 12 and the lower disc 22 can be snap-fitted, thereby being able to press the filter membrane 3 in the middle, and the upper disc 12, the filter membrane 3, and the lower disc 22 form the main filter part, and the outer diameter of the main filter part is 38 mm. The inside of the upper connector 11 and the lower connector 21 is connected and can realize the flow of gas, so that the gas can be filtered through the filter membrane 3, and the gas discharged from the lower connector 21 is clean filtered gas, which can better ensure the accuracy and service life of the gas detector.

[0022] A plurality of upper reinforcing ribs 13 are provided between the outer wall of the upper connector 11 and the upper end surface of the upper disc 12 to improve the strength of the upper body 1; a plurality of lower reinforcing ribs 23 are provided between the outer wall of the lower connector 21 and the lower end surface of the lower disc 22 to improve the strength of the lower body 2.

[0023] The cross-sections of both the upper reinforcing rib 13 and the lower reinforcing rib 23 are triangular, which can play a role in stable support and strengthening.

[0024] Both the upper connector 11 and the lower connector 21 are taper connectors, which can thus form a tight connection with other structures, have a small tolerance range, and are convenient for connection and disconnection. After the connection is completed, the clamping effect of the taper head makes the filter not loose during use.

[0025] The lower body 2 is connected to the nozzle of the gas detector through a hose.

[0026] The filter membrane 3 is made of a waterproof and breathable material.

[0027] The smooth side of the filter membrane 3 is arranged towards the air inlet end of the upper body 1. Thus, when using the filter membrane 3 to filter the incoming air, since the smooth side of the filter membrane 3 faces the air inlet side, the adhesion of dust and pollutants is reduced, improving the filtering effect.

[0028] The model of the filter membrane 3 is 35*27mm, and those skilled in the art can also make adaptive adjustments to this size according to actual needs.

[0029] In this embodiment, by designing the filter membrane 3, dust and liquid water in the gas can be effectively blocked, preventing dust and liquid water from entering the interior of the gas detector. At the same time, part of the water vapor can also be filtered out, so that the humidity of the gas entering the gas detector is controlled at about 80%RH.

[0030] Embodiment Two This embodiment provides an assembly method for a filter based on the filter in Embodiment One, including the following steps: S1. Place the filter membrane 3 on the lower body 2, and make the smooth side of the filter membrane 3 face the air inlet end of the upper body 1, and press the outer edge of the filter membrane 3 flat by hand; S2. Fasten the upper body 1 to the lower body 2 and clamp it with a fixture; S3. Use ultrasonic welding technology to press the periphery of the connection between the upper body 1 and the lower body 2.

[0031] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A filter, characterized in that: It includes an upper body, a lower body and a filter membrane, the upper body and the lower body are snap-fitted together, and the filter membrane is located between the upper body and the lower body, one end of the upper body away from the lower body is used for air intake, and one end of the lower body away from the upper body is used for connecting the gas nozzle of the gas detector.

2. The filter according to claim 1, characterized in that: The upper body includes an upper connector and an upper disc, wherein the first end of the upper connector is used for air intake, and the second end of the upper connector is connected to the upper disc; the lower body includes a lower connector and a lower disc, wherein the first end of the lower connector is used for connecting to the gas nozzle of the gas detector, and the second end of the lower connector is connected to the lower disc; the upper disc and the lower disc can be buckled together, and the upper connector is internally connected to the lower connector.

3. The filter according to claim 2, characterized in that: A plurality of upper reinforcing ribs are arranged between the outer wall of the upper connecting head and the upper end surface of the upper disc; a plurality of lower reinforcing ribs are arranged between the outer wall of the lower connecting head and the lower end surface of the lower disc.

4. The filter according to claim 3, characterized in that: The cross sections of the upper reinforcement rib and the lower reinforcement rib are both triangular.

5. The filter according to claim 2, characterized in that: The upper connector and the lower connector are both pagoda connectors.

6. The filter according to claim 1, characterized in that: The lower body is connected to the gas nozzle of the gas detector through a hose.

7. The filter according to claim 1, characterized in that: The filter membrane is made of waterproof and breathable material.

8. The filter according to claim 1, characterized in that: The light side of the filter membrane is arranged toward the air inlet end of the upper body.

9. The filter according to claim 1, characterized in that: The model of the filter membrane is 35*27mm.

10. A method for assembling a filter according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Place the filter membrane on the lower body, with the smooth side of the filter membrane facing the air inlet end of the upper body, and flatten the outer edge of the filter membrane by hand; S2. Snap the upper body onto the lower body and clamp it using a clamp; S3. Use ultrasonic welding technology to press the outer periphery of the connection between the upper body and the lower body.

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