CN114504886B

CN114504886B - Gas filtering pipe

Info

Publication number: CN114504886B
Application number: CN202210276018.9A
Authority: CN
Inventors: 杜永斋; 陈高翔
Original assignee: Shenzhen Enboso Technology Co ltd
Current assignee: Shenzhen Enboso Technology Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2023-03-17
Anticipated expiration: 2042-03-21
Also published as: CN114504886A

Abstract

The invention belongs to the technical field of gas purification, and discloses a gas filter pipe. The gas filter pipe comprises a pipe body which can be fixed on an installation structure, wherein both ends of the pipe body are provided with end heads, the two end heads are provided with openings communicated with the pipe body, the openings can be sealed by end covers, the pipe body, the end heads arranged at both ends of the pipe body and the end covers form a sealed inner cavity, a filter material is filled in the inner cavity, and the filter material is filled in and discharged from the upper opening and the lower opening of the pipe body; the pipe body is provided with an air inlet nozzle and an air outlet nozzle which are communicated with the pipe wall, and the air inlet nozzle and the air outlet nozzle are used for air to enter and exit, so that the filtering function of the air is realized. The gas filter pipe provided by the invention can realize in-place quick assembly and disassembly of filter materials, effectively avoids pollution caused by replacement and disassembly of the filter pipe, and ensures the cleanliness and the service life of the filter pipe. The gas filter tube can be used in various occasions where gas needs to be dried or filtered and the like, and is particularly suitable for the fields with high requirements on cleanliness, such as ion mobility spectrometry, mass spectrometry, chromatography and the like.

Description

Gas filter tube

Technical Field

The invention relates to the technical field of gas purification, in particular to a gas filter pipe capable of being repeatedly filled in place.

Background

Gas purification is currently a common requirement in almost all high-tech gas applications. The filtration technology of gases, especially the design of the filter tubes, is a crucial part. The existing filter pipe adopts a disposable one-off filling design, which causes great waste; or adopt the design of can filling that requires higher to operating personnel, be difficult to avoid changing the pollution that the filtering agent in-process brought into to cause to change a filter material, just need carry out the stability of longer time to gas transmission pipeline and sweep, with the purification degree of assurance gas, but among the actual operation process, even if adopt high-purity gas to carry out the drying tube and sweep in advance, also can cause the complexity in the operation to promote.

Disclosure of Invention

The invention aims to provide a gas filter pipe, which can avoid pollution caused by the fact that the filter pipe is integrally disassembled for filling, can realize the function of reliably and repeatedly assembling and disassembling filter materials, and realizes the rapid simplification of the operation of the filter material filling process.

In order to achieve the purpose, the invention adopts the following technical scheme:

a gas filter tube comprises a tube body capable of being fixed on a mounting structure, wherein two ends of the tube body are respectively provided with an end head, the two end heads are respectively provided with an opening communicated with the tube body, the openings can be sealed by end covers, the tube body, the end heads and the end covers arranged at the two ends of the tube body form a sealed inner cavity, a filter material is filled in the inner cavity, and the filter material is filled in and discharged from the upper opening and the lower opening of the tube body; the pipe body is provided with an air inlet nozzle and an air outlet nozzle which are communicated with the pipe wall.

As an alternative to the gas filtering pipe, the top surface of the tip at the lower end of the pipe body is a conical surface extending downward to the opening of the tip.

As an alternative to the gas filtering tube, the inner ends of the inlet and outlet nozzles extend into the inner cavity of the tube body.

As an alternative to the gas filtering pipe, the inner ends of the air inlet nozzle (81) and the air outlet nozzle (82) extend into the middle of the inner cavity of the pipe body.

As an alternative to the gas filtering tube, the inlet nozzle (81) and the outlet nozzle (82) are respectively close to the two ends of the tube body.

As an alternative to the gas filter tube, the end cap is connected to the end head in a gas-tight manner by means of a first sealing gasket.

As an alternative to the gas filtering tube, the end head is detachably connected to both ends of the tube body.

As an alternative to the gas filter tube, the end head is connected to the tube body in a gas-tight manner by means of a second sealing gasket.

As an alternative of the gas filter tube, the second sealing washer is embedded in an annular notch formed in the outer edge of the end face of the end head, and the outer end face of the second sealing washer protrudes outwards.

As an alternative to the gas filter tube, the tip is integrally formed with the tube body.

The invention has the beneficial effects that:

according to the gas filter pipe provided by the invention, the pipe body is fixed through the mounting structure, and the air inlet nozzle and the air outlet nozzle are arranged on the pipe wall, so that when a filter material is replaced, only the end covers at the upper end and the lower end of the pipe body are required to be opened to fill a new filter material and discharge an old filter material, the pipe body, the air outlet nozzle and the air inlet nozzle are not required to be disassembled and assembled, the in-place rapid assembly and disassembly of the filled filter material can be realized, the pollution caused when the filter pipe is replaced and disassembled is effectively avoided, and the cleanliness and the service life of the filter pipe are ensured.

Drawings

FIG. 1 is a schematic cross-sectional view of a gas filter tube according to the present invention.

In the figure:

1-a pipe body; 2-end; 3-end cover; 4-a first sealing gasket; 5-a second sealing gasket; 6-mounting a structure; 7-fastening bolts; 8-air nozzle; 81-an air inlet nozzle; and 82, an air outlet nozzle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used based on the orientations or positional relationships shown in the drawings for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

In the prior art, the filter pipes for gas purification are mainly divided into two types, one type adopts a disposable one-off filling design, and the filter pipes are convenient to assemble and disassemble but can cause great waste; the filter tube with the structure is inconvenient to disassemble and assemble, pollution caused by replacement of the filter agent is difficult to avoid, pollution needs to be blown and swept in a matched mode to discharge, and production or experiment progress is delayed. Therefore, the embodiment provides the gas filter pipe which solves the problems of in-place discharge and loading of the filter material, ensures the overall cleanliness of the filter pipe, and can quickly realize stable filter performance after the filter material is replaced.

As shown in fig. 1, the present embodiment provides a gas filtering pipe, which includes a pipe body 1 fixed to a mounting structure 6, and the pipe body 1 is fixedly connected to the mounting structure 6, so that the pipe body 1 can be vertical or inclined by a certain angle, preferably, the inclined angle does not exceed 45 degrees, so as to prevent the filler in the pipe body 1 from sliding down slowly. The tube body 1 is of a cylindrical structure, the inner wall of the tube body is smooth, the section of an inner cavity can be circular, oval or polygonal, the tube body is made of stainless steel, and materials such as polytetrafluoroethylene, polyether-ether-ketone, polycarbonate, polyethylene and polystyrene can be selected according to requirements. The two ends of the pipe body 1 are both fixed with end heads 2, and the two end heads 2 are both provided with openings communicated with the pipe body 1, the openings can be sealed by end covers 3, the pipe body 1, the end heads 2 and the end covers 3 arranged at the two ends of the pipe body form a sealed inner cavity, filter materials are filled in the inner cavity, the filter materials can be filter materials for filtering air impurities, and can also be other filter materials such as a dehumidifying agent, an organic matter removing agent and the like which are filled according to requirements and used for drying or degerming and the like on gas, and the filter materials are filled in and discharged through the upper opening and the lower opening of the pipe body 1; at least two air nozzles 8 penetrating through the pipe wall are arranged on the pipe body 1 and are used as an air inlet nozzle 81 and an air outlet nozzle 82 of the filter pipe for air to enter and exit, and after the air enters the pipe body 1 through the air inlet nozzle 81, the air passes through the filter material in the pipe body 1 and is discharged through the air outlet nozzle 82, so that the functions of filtering the air and the like are realized.

The gas filter pipe that this embodiment provided, through installation structure 6 such as installation wall fixed body 1 back, need not to carry out the dismantlement of body 1 when the filter material is changed, but open body 1 lower extreme and upper end cover 3 in proper order, make old filter material flow by the opening part of bottom end 2, new filter material is poured by the upper end opening of body 1, has realized loading and unloading on throne of filter material, and need not to use and just abandon after once, has prolonged the life of filter pipe.

Furthermore, because the air tap 8 is arranged on the pipe wall of the filter pipe, when the end cover 3 is detached, the air tap 8 does not need to be moved together with the end cover 3, and the possibility that the air tap 8 and the air in the air tap 8 are polluted by the outside can be further reduced.

Simultaneously, when changing the filter material, open the end cover 3 of bottom earlier, make old filter material flow by the opening part on the end 2 of bottom after, close the end cover 3 of body 1 bottom again, open the end cover 3 at body 1 top and fill new filter material, old filter material flows the back, new filter material can be filled in at once, the interval time of the two is very short, the length of time of the inner contact outside air of air cock 8 has been shortened greatly, through practice the proof, this kind of filter tube, can effectively avoid air cock 8 to receive the pollution when changing the filter material, guarantee gaseous cleanliness factor.

Specifically, in this embodiment, the mounting structures 6 at the two ends of the filter tube are provided with large through holes, the two large through holes are opposite in position and larger than the opening of the end heads 2 at the two ends of the filter tube, so as to avoid obstructing the opening and closing of the end covers 3. Optionally, a plurality of threaded holes are formed in the end heads 2 at the upper end and the lower end of the filter pipe, small through holes matched with the threaded holes are formed in the mounting structure 6, and the fastening bolts 7 penetrate through the through holes and are screwed in the threaded holes to assemble and fix the end heads 2 and the mounting structure 6.

Optionally, in this embodiment, the end cap 3 is connected to the end head 2 through a thread, and in order to facilitate screwing of the end cap 3, the middle portion of the outer end of the end cap 3 is provided with a recessed hexagonal groove. As a preferable scheme, in this embodiment, the middle of the end cap 2 protrudes from the large through hole on the mounting structure 6, and the protrusion is favorable for positioning the filter tube, and the cap end protruding outward from the outer edge of the end cap 3 can be buckled and covered on the end face of the protruding end of the end cap 2, so as to limit the screwing depth of the end cap 3; meanwhile, the contact area between the end cover 3 and the end head 2 can be increased, and the sealing performance between the end cover and the end head 2 is improved.

As a more preferable solution, in this embodiment, in order to ensure the sealing performance between the end cover 3 and the end cap 2, a first sealing gasket 4 is disposed between the end cover 3 and the end cap 2, and the first sealing gasket is disposed on the abutting surface of the cap end of the end cover 3 and the protrusion of the end cap 2, and is embedded in the annular groove formed on the cap end of the end cover 3, so that the width of the first sealing gasket 4 may be greater than the width of the end face of the protrusion of the end cap 2, and completely covers the annular end face of the protrusion of the end cap 2, thereby ensuring the sealing performance. With reference to fig. 1, optionally, in this embodiment, the tip 2 and the tube body 1 may be integrally formed, or may be detachably connected, so as to replace a damaged portion, and the detachable manner may be a common threaded connection; further, in order to ensure the sealing performance between the end head 2 and the pipe body 1, the end head 2 and the pipe body 1 are connected in an airtight mode through a second sealing gasket 5. Optionally, in this embodiment, the second sealing washer 5 is embedded in an annular notch formed in the outer edge of the end surface of the end 2, and the outer end surface of the second sealing washer 5 protrudes outward, so that the second sealing washer 5 is pressed by the mounting structure 6, and the second sealing washer 5 deforms and is tightly pressed on the inner wall of the pipe body 1, thereby improving the sealing performance between the pipe body 1 and the end surface. Alternatively, in this embodiment, the first sealing washer 4 and the second sealing washer 5 are preferably made of fluororubber sealing washers, or made of teflon, copper (including oxygen-free copper), aluminum (including aluminum alloy), or other materials as needed.

Further, in order to avoid the filter material staying, in this embodiment, the top surface of the end 2 located at the lower end of the pipe body 1 is an inclined surface structure which is inclined downwards and extends to the opening of the end 2; preferably, the inclined surface structure is a conical surface, and can also be set into a pyramid surface, a spherical surface and the like according to different cross-sectional shapes of the tube body 1; the included angle a between the inclined plane and the horizontal plane is 30 degrees to 45 degrees, so that the phenomenon that the opening is too large or the end head 2 is too long due to the overlarge value of the included angle a is avoided, and meanwhile, the phenomenon that the outflow speed of the filter material is influenced due to the undersize value of the included angle a is also avoided. Alternatively, the structure of the head 2 at the upper end of the pipe body 1 may be the same as that of the head 2 at the lower end of the head 2 for convenience of manufacture or assembly.

Continuing to refer to fig. 1, in this embodiment, the inner of air cock 8 stretches into the inner chamber of body 1, rather than level with the inner wall of body 1, and the aim of this design is that, when the filter material flows downwards, the filter material in the middle part of body 1 is more easily discharged to avoid the inner opening of air cock 8 to block up because of the filter material attached to the inner wall of body 1. More preferably, the inner end of the air tap 8 extends into the middle of the inner cavity of the tube body 1.

Further, in order to enlarge the diffusion area of gas in the filter material, in this embodiment, the inner of air cock 8 stretches into the inner chamber middle part of body 1, and simultaneously, the air cock 8 that is used for admitting air is close to the both ends of body 1 respectively with the air cock 8 that is used for giving vent to anger for gas can obtain abundant filtration in the filter material.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The gas filter pipe is characterized by comprising a pipe body (1) capable of being fixed to a mounting structure (6), wherein end heads (2) are arranged at two ends of the pipe body (1), openings communicated with the pipe body (1) are arranged on the two end heads (2), the openings can be sealed by end covers (3), the pipe body (1), the end heads (2) and the end covers (3) arranged at the two ends of the pipe body form a sealed inner cavity, filter materials are filled in the inner cavity, and the filter materials are filled and discharged through the upper opening and the lower opening of the pipe body (1); an air inlet nozzle (81) and an air outlet nozzle (82) which penetrate through the pipe wall are arranged on the pipe body (1);

the top surface of the end head (2) positioned at the lower end of the pipe body (1) is a conical surface which is inclined downwards and extends to the opening of the end head (2);

the inner ends of the air inlet nozzle (81) and the air outlet nozzle (82) extend into the middle part of the inner cavity of the pipe body (1);

the air inlet nozzle (81) and the air outlet nozzle (82) are respectively close to two ends of the pipe body (1).

2. A gas filter tube according to claim 1, wherein the end cap (3) is connected to the head (2) in a gas-tight manner by means of a first sealing gasket (4).

3. A gas filtration tube according to claim 1, wherein said head (2) is removably connected to both ends of said tubular body (1).

4. A gas filter tube according to claim 3, wherein the end head (2) is connected to the tube body (1) in a gas-tight manner by means of a second sealing gasket (5).

5. A gas filter tube according to claim 4, wherein the second sealing gasket (5) is embedded in an annular notch formed in the outer edge of the end face of the end head (2), and the outer end face of the second sealing gasket (5) is protruded outwards.

6. A gas filter tube according to claim 1, wherein the head (2) is of integral construction with the body (1).