CN117839331A

CN117839331A - Medium-efficiency filter

Info

Publication number: CN117839331A
Application number: CN202311763242.1A
Authority: CN
Inventors: 李家成
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-12-21
Filing date: 2023-12-21
Publication date: 2024-04-09

Abstract

The application discloses a medium-efficiency filter, which relates to the technical field of filters and comprises an outer frame, an inner frame, a filter bag and a pressing strip; the outer frame and the inner frame are of rectangular structures, and the inner side of the outer frame is provided with a mounting groove; the inner frames are arranged in parallel, and are arranged in the mounting grooves of the outer frames; the filter bags are in one-to-one correspondence with the inner frames, the bag openings of the filter bags penetrate through the inner frames, and the bag openings are outwards turned over and sleeved on the inner frames; the pressing strips are arranged on the edges of the adjacent inner frames; the filter bag on the inner frame is adhered and fixed with the mounting groove of the outer frame. The setting of layering is passed through to the medium-effect filter of this application, has sheltered from the clearance between the adjacent inside casing, avoids the air to pass through from the clearance between the adjacent inside casing, has ensured the filter effect to the air.

Description

Medium-efficiency filter

Technical Field

The application relates to the technical field of filters, in particular to a medium-efficiency filter.

Background

Along with the development of industrialization, atmospheric environmental pollution is more and more serious, people attach more importance to air quality, public places such as large-scale markets, supermarkets, hospitals, production workshops and exhibition centers belong to public places with relatively dense personnel, the poor air quality can directly threaten the physical health of people, a large amount of fresh air is required to be supplied, in the process of conveying the fresh air, the general places at least need to be filtered through primary and medium-efficiency two ways, dust in the air is intercepted through air filtration, and the transmission of bacteria and viruses is blocked, so that the physical health of the personnel is ensured.

In the prior art, the patent issued with the publication number CN208553444U discloses a medium-efficiency bag filter, which comprises: the outer frame is formed by encircling a long-strip-shaped pipe, a clamping groove is formed in the inner side of the long-strip-shaped pipe, the clamping groove penetrates through the long-strip-shaped pipe, and an adhesive layer is coated in the clamping groove of the outer frame; the inner frames are arranged in parallel and clamped in the clamping grooves of the outer frames, riveting holes are formed in the edges of adjacent inner frames and are matched with riveting pieces to connect the adjacent inner frames, the number of the riveting holes in the edges of the inner frames is six, the distance between the riveting holes in the two ends of the edges and the end parts of the edges is 50 mm, and the distances between the riveting holes in the middle of the edges are evenly set; the filter bags are matched with the inner frame, and openings of the filter bags are fixed on the inner frame.

In the above-mentioned technique, because pass through rivet fixed between the adjacent inside casing, there is the clearance between the inside casing, and air can pass in the clearance between the inside casing, and the intermediate filter can't filter this part gas, leads to the filter effect of intermediate filter not good. Based on this, we propose a novel medium-efficiency filter.

Disclosure of Invention

In order to solve the problems existing in the prior art, the application provides a medium-efficiency filter.

In order to achieve the above purpose, the present application adopts the following technical scheme:

a medium-efficiency filter comprises an outer frame, an inner frame, a filter bag and a pressing strip; the outer frame and the inner frame are of rectangular structures, and the inner side of the outer frame is provided with a mounting groove; the inner frames are arranged in parallel, and are arranged in the mounting grooves of the outer frames; the filter bags are in one-to-one correspondence with the inner frames, the bag openings of the filter bags penetrate through the inner frames, and the bag openings are outwards turned over and sleeved on the inner frames; the pressing strips are arranged on the edges of the adjacent inner frames; the filter bag on the inner frame is adhered and fixed with the mounting groove of the outer frame.

This application further technical scheme sets up to, the edge of inside casing extends to the inside of inside casing has the extension limit, the edge of layering has the blank holder to the inside extension of layering, blank holder and extension cooperation.

This application further technical scheme sets up to, filter bag includes by outside to interior first non-woven fabrics, melt-blown cloth, bicomponent filter pulp and the second non-woven fabrics that set gradually.

This application further technical scheme sets up to, the edge of filter bag passes through ultrasonic bonding, be formed with the ultrasonic bonding indentation of multichannel along its length direction on the filter bag.

The further technical scheme of this application sets up to, the filter bag is "V" type, the quantity of filter bag is three at least.

This application further technical scheme sets up to, the frame includes four curb plates and four mould the angle, four the curb plate encloses into the rectangle frame, mould the angle and be used for connecting the tip of two curb plates, mould angle and curb plate and pass through screw or rivet connection.

This application further technical scheme sets up to, the section of curb plate is H type structure, mould angle and include integrated into one piece's connecting block and picture peg, the tip adaptation of connecting block and curb plate, the picture peg inserts in the external groove of curb plate, the connecting block has the inner chamber, the inner chamber is adapted with the inside groove of curb plate.

The further technical scheme of this application sets up to, the lateral surface of picture peg sets up with the surface coplane of connecting block, the thickness of picture peg equals the degree of depth of the external groove of curb plate.

Compared with the prior art, the application has the following beneficial effects:

according to the middle-efficiency filter, the gaps between the adjacent inner frames are shielded through the arrangement of the pressing strips, so that air is prevented from passing through the gaps between the adjacent inner frames, and the air filtering effect is ensured; meanwhile, the pressing strips play a role in connecting the adjacent inner frames.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of the structure of the inner frame and the bead according to the embodiment of the present application;

FIG. 3 is a schematic structural view of a filter element according to an embodiment of the present disclosure;

FIG. 4 is a schematic layer structure of a filter element structure according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural view of an outer frame according to an embodiment of the present disclosure;

FIG. 6 is a schematic view illustrating the connection between the plastic corner and the side plate according to the embodiment of the present application;

FIG. 7 is a schematic diagram of another embodiment of an outer frame of an embodiment of the present application;

fig. 8 and 9 are schematic structural views of other embodiments of the outer frame according to the embodiment of the present application.

Reference numerals in the drawings:

1. an outer frame; 10. a mounting groove; 11. a side plate; 12. molding the corners; 121. a connecting block; 122. inserting plate; 2. an inner frame; 21. edge extension; 3. a filter bag; 31. a first nonwoven fabric; 32. melt-blowing the cloth; 33. a bi-component filter cotton; 34. a second nonwoven fabric; 4. pressing strips; 41. and (5) edge pressing.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

The application provides a medium-efficiency filter.

As shown in fig. 1 to 6, the medium-efficiency filter comprises an outer frame 1, an inner frame 2, a filter bag 3 and a pressing strip 4; wherein, frame 1 and inside casing 2 are rectangle structure, and frame 1 inboard is formed with mounting groove 10, and mounting groove 10 and a plurality of inside casing 2 looks adaptation, a plurality of inside casings 2 are arranged side by side, and inside casing 2 installs in the mounting groove 10 of frame 1.

In the embodiment, the filter bags 3 are in one-to-one correspondence with the inner frames 2, the bag openings of the filter bags 3 penetrate through the inner sides of the inner frames 2, and the bag openings are outwards turned and sleeved on the outer sides of the inner frames 2. The battens 4 are arranged on the edges of the adjacent inner frames 2, and the battens 4 are used for shielding gaps between the adjacent inner frames 2. After the inner frame 2 sleeved with the filter bag 3 is mounted on the outer frame 1, the pressing strips 4 fix the adjacent inner frames 2, glue is injected into the mounting groove 10 of the outer frame 1, and the everting opening of the filter bag 3 on the inner frame 2 is bonded in the mounting groove 10 by the glue.

Further, the edge of the inner frame 2 extends to the inner frame 2, the edge of the pressing strip 4 extends to the inner part of the pressing strip 4, the pressing strip 41 of the pressing strip 4 can be folded into the extending edge 21 of the inner frame 2 through external force, the pressing strip 41 is matched with the extending edge 21, and the connection stability of the pressing strip 4 and the inner frame 2 is ensured.

In this embodiment, the filter bag 3 includes a first nonwoven fabric 31, a melt-blown fabric 32, a bi-component filter cotton 33 and a second nonwoven fabric 34 stacked in order from outside to inside, the filter bag 3 is in a V shape, and the filter bag 3 may be formed by folding and splicing a whole piece of fabric, or may be formed by splicing two pieces of fabric. The filter bag 3 is soaked by sterilizing liquid medicine, and the filter bag 3 has the function of filtering bacteria.

Specifically, the edges of the filter bag 3 are bonded by ultrasonic waves, and a plurality of ultrasonic bonding indentations are formed on the filter bag 3 along the length direction of the filter bag, so that the overall quality of the filter bag 3 is ensured. The number of filter bags 3 is at least three, in this embodiment the number of filter bags 3 is three.

In one possible embodiment, the pore size of the bi-component filter cotton 33 decreases sequentially from inside to outside, ensuring the air filtering effect.

In this embodiment, the outer frame 1 includes four side plates 11 and four plastic corners 12, the four side plates 11 may be of equal length structure, or may be of two-long two-short structure, so that the four side plates 11 enclose a rectangular frame, the four plastic corners 12 are located at four corners of the rectangular frame and are respectively used for connecting the ends of the two side plates 11, and the plastic corners 12 are connected with the side plates 11 by screws or rivets.

Preferably, the section of the side plate 11 is of an H-shaped structure, the plastic corner 12 comprises a connecting block 121 and an inserting plate 122 which are integrally formed, the connecting block 121 is matched with the end part of the side plate 11, the inserting plate 122 is inserted into an outer groove of the side plate 11, the connecting block 121 is provided with an inner cavity, and the inner cavity is matched with an inner groove of the side plate 11. The outer side surface of the insert plate 122 is arranged coplanar with the surface of the connection block 121, and the thickness of the insert plate 122 is equal to the depth of the outer groove of the side plate 11.

As shown in fig. 7, in one possible embodiment, the outer frame 1 may also be configured as a rectangular ring frame, and cover plate structures are disposed on two sides of the rectangular ring frame, where the cover plate structures are used to fix the primary-secondary frame 3 with the filter element structure 2 in the rectangular ring frame. One cover plate can be integrally arranged with the rectangular ring frame, and the other cover plate and the rectangular ring frame can be detachably and fixedly arranged; of course, both cover plates can be detachably and fixedly arranged with the rectangular ring frame, as shown in fig. 7.

As shown in fig. 8, in one possible embodiment, the outer frame 1 may include two identical L-shaped channel plates, and the two L-shaped channel plates are assembled into the rectangular outer frame 1, and the two L-shaped channel plates are detachably and fixedly connected.

In one possible embodiment, as shown in fig. 9, the casing 1 may include a U-shaped channel plate and a sealing plate detachably fixed to the port of the U-shaped channel plate.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The medium-efficiency filter is characterized by comprising an outer frame (1), an inner frame (2), a filter bag (3) and a pressing strip (4); the outer frame (1) and the inner frame (2) are of rectangular structures, and an installation groove (10) is formed in the inner side of the outer frame (1); the inner frames (2) are arranged in parallel, and the inner frames (2) are arranged in the mounting grooves (10) of the outer frames (1); the filter bags (3) are in one-to-one correspondence with the inner frames (2), the bag openings of the filter bags (3) penetrate through the inner frames (2), and the bag openings are outwards turned and sleeved on the inner frames (2); the pressing strips (4) are arranged on the edges of the adjacent inner frames (2); the filter bag (3) on the inner frame (2) is adhered and fixed with the mounting groove (10) of the outer frame (1).

2. A medium efficiency filter according to claim 1, wherein the edge of the inner frame (2) extends towards the inside of the inner frame (2) with a rim (21), the edge of the bead (4) extends towards the inside of the bead (4) with a bead (41), and the bead (41) cooperates with the rim (21).

3. A medium efficiency filter according to claim 1, characterized in that the filter bag (3) comprises a first nonwoven (31), a meltblown (32), a bicomponent filter cotton (33) and a second nonwoven (34) arranged in sequence from the outside to the inside.

4. A medium efficiency filter according to claim 3, wherein the edges of the filter bag (3) are ultrasonically bonded, and wherein the filter bag (3) has a plurality of ultrasonic bonding indentations formed along its length.

5. A medium efficiency filter according to claim 4, characterized in that the filter bags (3) are V-shaped, the number of filter bags (3) being at least three.

6. A medium efficiency filter according to claim 1, characterized in that the outer frame (1) comprises four side plates (11) and four plastic corners (12), the four side plates (11) enclose a rectangular frame, the plastic corners (12) are used for connecting the ends of the two side plates (11), and the plastic corners (12) are connected with the side plates (11) through screws or rivets.

7. A medium efficiency filter according to claim 6, wherein the cross section of the side plate (11) is of an H-shaped structure, the plastic corner (12) comprises a connecting block (121) and a plugboard (122) which are integrally formed, the connecting block (121) is adapted to the end of the side plate (11), the plugboard (122) is inserted into the outer groove of the side plate (11), the connecting block (121) is provided with an inner cavity, and the inner cavity is adapted to the inner groove of the side plate (11).

8. A medium efficiency filter according to claim 7, characterized in that the outer side of the insert plate (122) is arranged coplanar with the surface of the connection block (121), the thickness of the insert plate (122) being equal to the depth of the outer groove of the side plate (11).