CN-120733471-B - Gas filtering device

CN120733471BCN 120733471 BCN120733471 BCN 120733471BCN-120733471-B

Abstract

The invention relates to the field of gas filtering equipment, in particular to a gas filtering device, which comprises an upper cover body and a lower cover body, wherein a filter cylinder is arranged between the upper cover body and the lower cover body, a primary filter layer, a particle filter layer and an inner cylinder are sequentially arranged on the filter cylinder from outside to inside, the primary filter layer bonds two ends of an expanding surface of the filter cylinder by using magic tape or glue, a first mounting groove is formed by inwards sinking on the outer side wall of the inner cylinder, a pair of I-shaped frames are arranged on the first mounting groove, a plurality of groups of arc-shaped sheet groups are arranged on one side of each I-shaped frame, each arc-shaped sheet group comprises a pair of arc-shaped sheets inclined downwards, a first clamping groove is formed by the pair of arc-shaped sheets, a first clamping sheet matched with the first clamping groove is arranged on the other side of each arc-shaped sheet, a plurality of second clamping sheets are arranged on one side of the inner cylinder, the second clamping sheet is matched with the first clamping groove, the width of the cavity gradually tapers from top to bottom, and a bottom plate is arranged on the bottom of each I-shaped frame. The invention has simple disassembly and operation, and can independently and directly replace the filter screen at the outermost layer or the innermost layer.

Inventors

LIN GUOFU
LIN DICHU

Assignees

垠雨医疗科技(浙江)有限公司

Dates

Publication Date: 20260512
Application Date: 20250707

Claims (6)

1. The gas filtering device is characterized by comprising an upper cover body and a lower cover body; the novel filter cartridge comprises an upper cover body, a lower cover body, a filter cartridge, a primary filter layer, a particle filter layer and an inner cylinder, wherein the filter cartridge is sequentially provided with the primary filter layer, the particle filter layer and the inner cylinder from outside to inside, the primary filter layer is formed by bonding two ends of an unfolding surface of the primary filter layer by using magic tape or glue, a first mounting groove is formed by inwards recessing on the outer side wall of the inner cylinder, a pair of I-shaped frames are mounted in the first mounting groove, one side of each I-shaped frame is provided with a plurality of groups of arc-shaped sheet groups, each arc-shaped sheet group comprises a pair of arc-shaped sheets inclined downwards, the pair of arc-shaped sheets form a first clamping groove, the other side of each I-shaped frame is provided with a first clamping sheet matched with the first clamping groove, the first clamping sheet is a plurality of groups of clamping sheets inclined downwards, the first clamping grooves are formed by the first clamping sheets, the width of each cavity is gradually reduced from top to bottom, a plurality of groups of second clamping sheets are arranged on one side of the inner cylinder and are arranged on the bottom of each I-shaped frame, a plurality of clamping sheets are inserted into the first clamping grooves, a plurality of groups of clamping sheets are correspondingly arranged on the L-shaped frames, and are correspondingly arranged on the L-shaped frames.
2. A gas filtration device according to claim 1 wherein said inner cylinder is a carbon bonded plastic mesh.
3. A gas filtration device according to claim 1 wherein said particle filtration layer is formed by using velcro or magnets to bond the ends of the self-expanding face.
4. A gas filtering device according to claim 1, 2 or 3, wherein the middle part of the upper cover body is provided with a downward concave part.
5. A gas filtering device according to claim 4, wherein the depressed portion is centrally outwardly protruding to form a handle.
6. A gas filtration device according to claim 1, 2 or 3 wherein the first card has an interior cavity filled with activated carbon particles and desiccant particles, the first card and the second card have ventilation holes in their surfaces, and the arcuate sheet is made of a porous material.

Description

Gas filtering device Technical Field The invention relates to the field of gas filtering equipment, in particular to a gas filtering device. Background At present, medical gas contains a small amount of solid impurities and moisture, so that the medical gas needs to be filtered in the process of conveying the medical gas to filter out the impurities in the medical gas. Gas filtration devices are therefore commonly used to filter medical gases. When the filter screen of the outermost layer or the innermost layer of the existing gas filtering device needs to be replaced, the cover body still needs to be removed, the primary filter layer, the particle filter layer and the inner cylinder are sequentially removed integrally, the inner cylinder, the particle filter layer and the primary filter layer need to be accurately aligned to the cover body during assembly, and the whole disassembly and assembly operation is laborious and needs to be accurately performed. Disclosure of Invention The invention aims at the problems, and provides a gas filtering device which solves the defects that when the filter screen of the outermost layer or the innermost layer needs to be replaced, a cover body still needs to be removed, a primary filter layer, a particle filter layer and an inner cylinder are sequentially removed integrally, and when the filter screen is assembled, the inner cylinder, the particle filter layer and the primary filter layer need to be accurately aligned to the cover body, and the whole disassembly and assembly operation is laborious and accurate operation is needed. The technical scheme adopted by the invention is as follows: a filter cylinder is arranged between the upper cover body and the lower cover body, a primary filter layer, a particle filter layer and an inner cylinder are sequentially arranged between the upper cover body and the lower cover body from outside to inside, the primary filter layer is formed by sticking two ends of an unfolding surface of the primary filter layer by using magic tape or glue, a first mounting groove is formed by inwards sinking on the outer side wall of the inner cylinder, a pair of I-shaped frames are arranged in the first mounting groove, a plurality of groups of arc-shaped sheet groups are arranged on one side of each I-shaped frame, each arc-shaped sheet group comprises a pair of arc-shaped sheets inclined downwards, a first clamping groove is formed by the pair of arc-shaped sheets, a first clamping sheet matched with the first clamping groove is arranged on the other side of each arc-shaped sheet, the first clamping groove is a cavity inclined downwards, the width of the cavity gradually tapers from top to bottom, a plurality of groups of second clamping sheets are arranged on one side of the inner cylinder, the second clamping sheet is matched with the first clamping groove, and a bottom plate is arranged on the bottom of each I-shaped frame. According to the invention, the first clamping groove is inserted through the first clamping piece to be assembled together, the second clamping piece is inserted into the first clamping groove to be assembled together, the two ends of the self-unfolding surface of the primary filter layer are bonded by adopting the magic tape or the glue in cooperation with the primary filter layer, the disassembly operation is simple, and the filter screen of the outermost layer or the innermost layer can be independently and directly replaced. Optionally, the inner cylinder is made of carbon-bonded plastic net. Optionally, the particle filter layer adopts magic tape and magnet to bond two ends of the self-unfolding surface. According to the invention, the two ends of the self-unfolding surface of the particle filter layer are bonded by the magic tape and the magnet, so that the particle filter layer can be replaced conveniently. Optionally, the first card is inserted into the first clamping groove so that the first card and the second card form a group of guide plates, and the width of the guide plates is gradually reduced from top to bottom. Optionally, a concave part is formed in the middle of the upper cover body. Optionally, the center of the concave part protrudes outwards to form a handle. Optionally, a snap ring is further installed on one side, close to the upper cover body, of the inner side of the inner cylinder, and a second clamping groove matched with the assembled I-shaped frame is formed in the outer side of the snap ring. Optionally, a limiting block which is bent obliquely downwards is further arranged on the inner side of the clamping ring, and a plurality of groups of reinforcing ribs which are longitudinally arranged are further arranged on the outer side of the clamping ring. Optionally, the snap ring corresponds the position with I-shaped frame and is equipped with second mounting groove and a pair of L type folded piece, and second mounting groove is inserted to L type folded piece one end, and the other end card