A gas filter device

Abstract

The application relates to the field of gas filtering devices, in particular to a gas filtering device which comprises an upper cover body and a lower cover body; a filter cartridge is arranged between the upper cover body and the lower cover body; the filter cartridge is sequentially provided with an initial efficiency filtering layer, a particle filtering layer and an inner cylinder from outside to inside; the initial efficiency filtering layer is bonded at both ends of a self-unfolding surface by magic tape or glue; a first mounting groove is formed in the outer side wall of the inner cylinder and recessed inward; a pair of I-shaped frames are mounted in the first mounting groove; a plurality of arc-shaped piece groups are arranged on one side of the I-shaped frame; each arc-shaped piece group comprises a pair of downwardly inclined arc-shaped pieces; a first clamping groove is formed by the pair of arc-shaped pieces; a first clamping piece matched with the first clamping groove is arranged on the other side of the I-shaped frame; the first clamping groove is a cavity inclined downwardly; the width of the cavity gradually decreases from the top to the bottom; a plurality of second clamping pieces matched with the first clamping groove are arranged on one side of the inner cylinder; and a bottom plate is arranged at the bottom of the I-shaped frame. The application is simple in dismounting operation and can directly replace the outermost filter screen or the innermost filter screen.

Description

Technical Field

[0001] This invention relates to the field of gas filtration equipment, and more specifically to a gas filtration device. Background Technology

[0002] Currently, medical gases contain small amounts of solid impurities and moisture. Therefore, during the transportation of medical gases, filtration is necessary to remove these impurities. Thus, gas filtration devices are generally used to filter medical gases.

[0003] When existing gas filtration devices require replacement of the outermost or innermost filter, the cover must be removed and the pre-filter, particulate filter, and inner cylinder removed as a whole. During assembly, the inner cylinder, particulate filter, and pre-filter must be precisely aligned onto the cover in sequence. The entire disassembly and assembly operation is laborious and requires precise operation. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a gas filtration device that solves the shortcomings of existing gas filtration devices. When the outermost or innermost filter needs to be replaced, the cover must be removed and the pre-filter layer, particulate filter layer, and inner cylinder removed as a whole in sequence. During assembly, the inner cylinder, particulate filter layer, and pre-filter layer must be precisely aligned with the cover in sequence. The entire disassembly and assembly operation is laborious and requires precise operation.

[0005] The technical solution adopted in this invention is as follows:

[0006] A gas filtration device includes: an upper cover and a lower cover; a filter cartridge is installed between the upper cover and the lower cover, the filter cartridge having a pre-filter layer, a particulate filter layer and an inner cylinder arranged sequentially from the outside to the inside, the pre-filter layer having its two ends of its unfolded surface bonded together with Velcro or adhesive, the outer side wall of the inner cylinder having an inwardly recessed first mounting groove, the first mounting groove having a pair of I-shaped frames installed, one side of the I-shaped frames having multiple sets of arc-shaped pieces, each arc-shaped piece including a pair of downwardly inclined arc-shaped pieces forming a first slot, the other side having a first card adapted to the first slot, the first slot being a downwardly inclined cavity, the width of the cavity gradually decreasing from the top to the bottom, one side of the inner cylinder having multiple sets of second cards, the second cards being adapted to the first slot, and the bottom of the I-shaped frames having a base plate.

[0007] The present invention uses a first card inserted into a first card slot for assembly, and a second card inserted into the first card slot for assembly. The two ends of the unfolded surface of the primary filter layer are bonded together with Velcro or glue. The disassembly operation is simple, and the outermost or innermost filter can be replaced directly.

[0008] Optionally, the inner cylinder is made of carbon-coated plastic mesh.

[0009] Optionally, the particle filter layer uses Velcro and magnets to bond the two ends of its unfolded surface. This invention's particle filter layer uses Velcro and magnets to bond the two ends of its unfolded surface, facilitating replacement of the particle filter layer.

[0010] Optionally, the first card is inserted into the first card slot such that the two form a set of guide plates, the width of which gradually decreases from top to bottom.

[0011] Optionally, the upper cover has a downwardly recessed portion in the middle.

[0012] Optionally, the center of the recess protrudes outward to form a handle.

[0013] Optionally, a retaining ring is also provided on the inner side of the inner cylinder near the upper cover, and a second retaining groove is provided on the outer side of the retaining ring to match the assembled I-shaped frame.

[0014] Optionally, the inner side of the retaining ring is also equipped with a downwardly curved limiting block, and the outer side of the retaining ring is also equipped with multiple sets of longitudinally arranged reinforcing ribs.

[0015] Optionally, the retaining ring is provided with a second mounting groove and a pair of L-shaped flaps at the corresponding position of the I-shaped frame. One end of the L-shaped flaps is inserted into the second mounting groove, and the other end is locked in the retaining ring. The bottom of the pair of L-shaped flaps abuts against the upper surface of the limiting block.

[0016] Optionally, the first card has an inner cavity filled with activated carbon particles and desiccant particles, and the surfaces of the first and second cards have ventilation holes. The arc-shaped sheet is made of a porous material.

[0017] In summary, the present invention has at least the following beneficial effects:

[0018] 1. This invention uses a snap-fit ​​modular design, which allows for the direct replacement of either the outermost or innermost filter layer, making disassembly and installation simple.

[0019] 2. The particle filter layer of this invention uses Velcro and magnets to bond the two ends of its unfolded surface, making it easy to replace the particle filter layer.

[0020] 3. In this invention, the width of the guide plate gradually decreases from top to bottom. Due to the reinforcing ribs on the outside of the I-shaped frame structure and the fact that the I-shaped frame forms a gas cavity with an air inlet at the top and a closed bottom, a bucket-shaped structure with a large top size and a small bottom size can be formed locally. The downward flow of gas will generate the Bernoulli hydrodynamic effect, guiding solid dust to settle quickly to the bottom of the I-shaped frame, avoiding excessive particle adsorption on each filter layer, extending the replacement cycle of each filter layer, and at the same time, the guide plate will also prevent particles from floating upward.

[0021] 4. The present invention features an inner cavity inside the first card, filled with activated carbon particles and desiccant particles. The surfaces of the first and second cards are provided with ventilation holes. The arc-shaped sheet is made of a porous material. The first card is used to adsorb impurities and moisture. With prolonged use, the activated carbon particles and desiccant particles expand after adsorbing a significant amount of impurities and moisture, resulting in a tighter fit between the first card and the arc-shaped sheet. Attached Figure Description

[0022] Figure 1 This is a perspective structural diagram of the gas filtration device according to Embodiment 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the primary filter layer, particulate filter layer, and inner cylinder structure of the gas filtration device according to Embodiment 1 of the present invention;

[0024] Figure 3 This is an internal structural diagram of the gas filtration device according to Embodiment 1 of the present invention;

[0025] Figure 4 This is an assembly structure diagram of a pair of I-beam frames of the gas filtration device according to Embodiment 1 of the present invention;

[0026] Figure 5 This is a structural diagram of the other side of the I-shaped frame of the gas filtration device according to Embodiment 1 of the present invention;

[0027] Figure 6 This is a partial perspective view of the inner cylinder of the gas filtration device according to Embodiment 1 of the present invention;

[0028] Figure 7 This is an internal structural diagram of the first card of the gas filtration device according to Embodiment 3 of the present invention.

[0029] The labels for the attached figures are as follows:

[0030] 1. Upper cover, 2. Lower cover, 3. Filter cartridge, 4. Primary filter layer, 5. Particle filter layer, 6. Inner cylinder, 7. First mounting groove, 8. I-shaped frame, 9. Arc-shaped piece, 10. First slot, 11. First card, 12. Second card, 13. Recessed part, 14. Handle, 15. Snap ring, 16. Second slot, 17. Reinforcing rib, 18. Limiting block, 19. Second mounting groove, 20. L-shaped flap, 21. Inner cavity, 22. Base plate. Detailed Implementation

[0031] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0032] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Example 1

[0034] The technical solution adopted in this invention is as follows:

[0035] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the present invention discloses a gas filtration device, comprising: an upper cover 1 and a lower cover 2; a filter cylinder 3 is installed between the upper cover and the lower cover, the filter cylinder being provided with a primary filter layer 4, a particulate filter layer 5 and an inner cylinder 6 in sequence from the outside to the inside; a first mounting groove 7 is formed by an inward indentation on the outer side wall of the inner cylinder, a pair of I-shaped frames 8 are installed in the first mounting groove, and the inner cylinder is made of carbon-coated plastic mesh; a plurality of arc-shaped plate groups are installed on one side of the I-shaped frame, the arc-shaped plate group including a pair of downwardly inclined arc-shaped plates 9, the pair of arc-shaped plates forming a first slot 10, and a first card 11 adapted to the first slot is installed on the other side, the first slot being a downwardly inclined cavity, the width of the cavity gradually decreasing from the top to the bottom; a plurality of second cards 12 are provided on one side of the inner cylinder, the second cards being adapted to the first slot; and a base plate 22 is provided at the bottom of the I-shaped frame.

[0036] In this embodiment, the carbon-bonded plastic mesh can be a carbon fiber composite plastic mesh.

[0037] In this embodiment, the porous material is a porous polymer material with an average pore size of 0.1-5 mm.

[0038] In this embodiment, the upper cover has a downward recessed portion 13 in the middle, and the center of the recessed portion protrudes outward to form a handle 14.

[0039] In this embodiment, a retaining ring 15 is also installed on the inner side of the inner cylinder near the upper cover, and a second retaining groove 16 is provided on the outer side of the retaining ring to match the assembled I-shaped frame.

[0040] like Figure 3 As shown, in this embodiment, the outer side of the retaining ring is also equipped with multiple sets of longitudinally arranged reinforcing ribs 17. The inner side of the retaining ring is also equipped with a downwardly curved limiting block 18. The retaining ring and the I-shaped frame are provided with a second mounting groove 19 and a pair of L-shaped flaps 20 at the corresponding positions. One end of the L-shaped flap is inserted into the second mounting groove, and the other end is locked in the retaining ring. The bottom of the pair of L-shaped flaps abuts against the upper surface of the limiting block. One set of reinforcing ribs is located on the outer side of the pair of I-shaped frames, which, together with the I-shaped frames, form a gas cavity with an air inlet at the top and a closed bottom.

[0041] In this embodiment, the first card 11 is inserted into the first slot 10 to assemble together, so that the first card 11 and the first slot 10 engage together. The second card 12 is inserted into the first slot 10 to assemble together, so that the second card engages with the first slot 10. The width of the guide plate gradually decreases from top to bottom. With one set of reinforcing ribs 17 located on the outside of a pair of I-shaped frames 8, the I-shaped frames 8 form a gas cavity 21 with an air inlet at the top and a closed bottom. This can locally form a bucket-shaped structure with a large top size and a small bottom size, thereby effectively utilizing the Bernoulli effect to guide the airflow carrying solid particles to quickly enter the bottom through the guide plate, so that the solid dust quickly settles to the bottom of the I-shaped frames 8.

[0042] Example 2

[0043] The difference between Embodiment 2 and Embodiment 1 is that the primary filter layer 4 uses Velcro or glue to bond the two ends of its unfolded surface. The particulate filter layer 5 uses Velcro or magnets to bond the two ends of its unfolded surface, making it easier to replace.

[0044] Example 3

[0045] like Figure 7 As shown, the difference between this embodiment 3 and embodiment 1 is that the first card 11 is inserted into the first card slot 10 so that the two form a set of guide plates, and the width of the guide plates gradually decreases from the top to the bottom.

[0046] The first card has an inner cavity 21 filled with activated carbon particles and desiccant particles. The surfaces of the first and second cards have ventilation holes. The arc-shaped sheet is made of porous material.

[0047] In this embodiment, both the first card and the second card are made of elastic plastic material.

[0048] In this embodiment, the first card can adsorb impurities and moisture. At the same time, the activated carbon particles and desiccant particles will expand after adsorbing more impurities and moisture, making the first card fit more tightly with the arc-shaped piece.

[0049] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A gas filtration device, characterized in that, include: The system comprises an upper cover and a lower cover; a filter cartridge is installed between the upper cover and the lower cover. The filter cartridge, from the outside in, sequentially comprises a pre-filter layer, a particulate filter layer, and an inner cylinder. The pre-filter layer is bonded at both ends of its unfolded surface using Velcro or adhesive. A first mounting groove is formed by an inward indentation on the outer wall of the inner cylinder. A pair of I-shaped frames are mounted in the first mounting groove. Multiple sets of arc-shaped pieces are mounted on one side of the I-shaped frames. Each arc-shaped piece set includes a pair of downwardly inclined arc-shaped pieces forming a first slot. A first card that matches the first slot is mounted on the other side of the I-shaped frames. The first slot is a downwardly inclined cavity whose width gradually decreases from top to bottom. The inner cylinder has a... Multiple sets of second cards are provided, each matching a first card slot. The bottom of the I-shaped frame is provided with a base plate. The first card is inserted into the first card slot, forming a guide plate. The width of the guide plate gradually decreases from the top to the bottom. A retaining ring is also provided on the inner side of the inner cylinder near the upper cover. The outer side of the retaining ring is provided with a second card slot that matches the assembled I-shaped frame. A downwardly curved limiting block is also provided on the inner side of the retaining ring. Multiple sets of longitudinally arranged reinforcing ribs are also provided on the outer side of the retaining ring. A second mounting groove and a pair of L-shaped flaps are provided at the corresponding positions of the retaining ring and the I-shaped frame. One end of the L-shaped flap is inserted into the second mounting groove, and the other end is locked in the retaining ring. The bottom of the pair of L-shaped flaps abuts against the upper surface of the limiting block.

2. The gas filtration device as described in claim 1, characterized in that, The inner cylinder is made of carbon-coated plastic mesh.

3. The gas filtration device as described in claim 1, characterized in that, The particle filter layer uses Velcro and magnets to bond the two ends of its unfolded surface.

4. A gas filtration device as described in claim 1, 2, or 3, characterized in that, The upper cover has a downward recessed part in the middle.

5. A gas filtration device as described in claim 4, characterized in that, The recessed part protrudes outward from the center to form a handle.

6. A gas filtration device as described in claim 1, 2, or 3, characterized in that, The first card has an inner cavity filled with activated carbon particles and desiccant particles. The surfaces of the first and second cards have ventilation holes. The arc-shaped sheet is made of a porous material.

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