Air filtering device

Abstract

The utility model relates to an air filtering device which comprises a filter element and a filter element supporting frame and further comprises a plurality of sealing strip sets arranged on the periphery of the filter element in a surrounding mode, each sealing strip set comprises two sealing strips, and the two sealing strips are symmetrically arranged on the two end faces of the filter element supporting frame. A sealing groove for the sealing strip to enter or extend out is formed in the end face of the filter element supporting frame, the sealing strip is movably arranged in the sealing groove, a plurality of springs are arranged in the sealing groove, the two ends of each spring are connected with the bottom face of the sealing groove and the end face of the sealing strip respectively, and the sealing strip enters the sealing groove under the tension effect of the springs. Under the thrust action of the bolt assembly, the spring tension is overcome to extend out of the sealing groove; according to the air filtering device, the air filtering device can be installed and fixed, good sealing performance is achieved, and the filtering effect of the air filtering device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air filter technology field especially relates to an air filter device. BACKGROUND

[0002] Air filter device is generally used in clean workshop, clean factory building, laboratory and clean room, and is used for electronic mechanical communication equipment equation, and there are five models of primary filter, medium filter, high medium filter, sub high efficiency and high efficiency filter.

[0003] The utility model discloses a low resistance high -efficient air filter provided by a Chinese utility model patent with the publication number CN211098039U, and the air filter includes a filter main body, a filter core, a filter core support frame, a mounting mechanism and a connecting mechanism, the mounting mechanism is located at the connecting place of the filter main body and the filter core support frame, the mounting mechanism includes a buckle, and one side of the buckle is located outside the filter main body, a placing groove is formed in one side surface of the filter main body, first sliding grooves are formed in the two side surfaces of the placing groove, and a third clamping groove is formed in the front end surface of the filter main body, the air filter is equipped with the buckle, which effectively avoids the inconvenience of installing the filter main body and the filter core support frame, facilitates the replacement of the filter core in the filter core support frame, makes the air filter have low resistance and good filtering effect, and the button is arranged, which effectively avoids the need for manual disassembly of the filter rear cover when the air filter inside fails, saves labor cost, facilitates timely maintenance and improves the maintenance efficiency.

[0004] However, the above-mentioned air filter still has some defects: when installing the filter core, the filter core support frame carrying the filter core is inserted into the placing groove, and the sealing performance of the filter core periphery is poor, resulting in poor filtering effect.

[0005] Therefore, the utility model provides an air filter device to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problem to provide an air filter device, that is, convenient filter core installation and good sealing performance, and improves the filtering effect.

[0007] To solve the above technical problems, the technical scheme of the air filter device is as follows: an air filter device, comprising a filter element and a filter element support frame, the filter element is installed in the middle of the filter element support frame, the air filter device is installed in an air duct, a filter groove for inserting the air filter device is formed on the air duct, the air filter device is movably inserted into the filter groove, and the air filter device has the following innovative points: the air filter device further comprises a plurality of sealing strip groups arranged around the filter element, each sealing strip group comprises two sealing strips, the two sealing strips are symmetrically arranged on the two end faces of the filter element support frame, a sealing groove for the sealing strips to enter or extend out is formed on the end face of the filter element support frame, the sealing strips are movably arranged in the sealing groove, a plurality of springs are arranged in the sealing groove, the two ends of the spring are connected with the bottom surface of the sealing groove and the end face of the sealing strip, and the sealing strip enters the sealing groove under the action of the spring tension and extends out of the sealing groove under the action of the thrust of the bolt assembly.

[0008] Each sealing strip group corresponds to at least one bolt assembly, the bolt assembly is arranged between the two sealing strips of the corresponding sealing strip group, the side surface of the filter element support frame is provided with an installation cavity corresponding to the bolt assembly, the installation cavity is in communication with the sealing grooves on the two sides, the bolt assembly comprises a bolt and a push block, a through hole is formed in the filter element support frame for the bolt to pass through and enter the installation cavity, the bolt is rotatably connected with the filter element support frame through a bearing after passing through the through hole and entering the installation cavity, the push block is movably arranged in the installation cavity through a sliding block assembly and is threadedly connected with the bolt, the two sides of the push block are provided with first inclined surfaces corresponding to the two sealing strips, the first inclined surfaces are inclined away from the central axis of the bolt from the side close to the sealing strip, the sealing strip is provided with second inclined surfaces corresponding to the first inclined surfaces, and the two first inclined surfaces of the push block are in contact with the second inclined surfaces of the corresponding sealing strips.

[0009] Further, the sliding block assembly has two and is arranged on the two sides of the push block, the sliding block assembly comprises a sliding block and a guide rail, the sliding block is connected with the push block, and the guide rail is installed on the inner wall of the installation cavity of the filter element support frame.

[0010] Further, the sealing strip comprises a sealing rubber strip and a sealing strip support rod, the sealing rubber strip is arranged on the outer side of the sealing strip support rod, and the second inclined surface is located on the side of the sealing strip support rod away from the sealing rubber strip.

[0011] Further, a groove corresponding to the spring is formed on the side of the sealing strip support rod away from the sealing rubber strip, the spring is arranged in the groove, and the end of the spring is connected with the bottom surface of the groove.

[0012] Further, a bolt operation hole corresponding to the bolt of each bolt assembly is formed around the air duct.

[0013] The air filter device has the following advantages:

[0014] The air filtering device is inserted into the corresponding filter groove of the air pipeline, the sealing strip is shrunk in the sealing groove under the spring tension, the insertion operation is not affected, after the air filtering device is inserted, the bolt of the bolt assembly is screwed, the thread of the bolt pushes the push block to move to the direction close to the sealing strip, the sealing strips on both sides are pushed to move outward and extend the sealing groove through the first inclined surface and the second inclined surface, so that the sealing strip is tightly pressed on the side wall of the filter groove of the air pipeline, air filtering device installation and fixation are realized, good sealing is achieved, and the filtering effect of the air filtering device is improved.

[0015] The sliding block assembly has two and is arranged on both sides of the push block, the stress of the push block is more uniform, the push block limiting effect is improved, and the push block is prevented from rotating with the bolt.

[0016] The recess corresponding to the spring is formed in the sealing strip supporting rod, and the spring is installed in the recess, so that the spring installation position can be positioned, and the spring can be prevented from deforming.

[0017] The air pipeline is provided with bolt operation holes corresponding to the bolts of the bolt assemblies around the air pipeline, an operator rotates the bolts through the bolt operation holes, and the air filtering device is convenient to install and disassemble. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model makes further detailed explanation in combination with the drawings and specific embodiment.

[0019] Figure 1 It is the structure schematic view of the air filtering device of the utility model.

[0020] Figure 2 It is the partial section view of A-A of the utility model.

[0021] Figure 3 It is the partial section view of B-B of the utility model.

[0022] Figure 4 It is the structure schematic view of the sealing strip of the utility model.

[0023] Figure 5 It is the schematic view of the air filtering device of the utility model being installed in the air pipeline. CONCRETE EMBODIMENT

[0024] In order to further explain the technical means and effects taken by the utility model to realize the predetermined utility model purposes, the specific embodiment, structure, features and effects of the utility model are explained in detail as follows in combination with the drawings and preferred embodiments.

[0025] Example

[0026] like Figures 1-5 As shown, this embodiment provides an air filtration device, which is installed in an air duct 9. The air duct 9 has a filter slot for inserting the air filtration device, which is movably inserted into the filter slot.

[0027] The air filtration device includes a filter element 2 and a filter element support frame 1. The filter element is installed in the middle of the filter element support frame. In this embodiment, the filter element 2 is a square filter element, and the filter element support frame 1 is a square frame structure.

[0028] The air filtration device also includes four sealing strip groups surrounding the filter element. Each sealing strip group includes two sealing strips 3, which are symmetrically arranged on two end faces of the filter element support frame 1. Sealing grooves 101 are formed on the end faces of the filter element support frame 1 for the sealing strips 3 to enter or extend. The sealing strips 3 are movably disposed within the sealing grooves 101. Each sealing strip 3 includes a sealing strip 302 and a sealing strip support rod 301. The sealing strip 302 is adhered to the outside of the sealing strip support rod 301. Three springs 7 are provided within each sealing groove 101. A groove 303 corresponding to each spring 7 is formed on the side of the sealing strip support rod 301 away from the sealing strip 302. The springs 7 are disposed within the grooves 303, with their two ends connected to the bottom surface of the groove 303 and the bottom surface of the sealing groove 101, respectively. The sealing strips 3 enter the sealing grooves 101 under the tension of the springs 7.

[0029] The sealing strip 3 extends out of the sealing groove 101 against the spring 7 tension under the thrust of the bolt assembly, each sealing strip group corresponds to two bolt assemblies, the bolt assembly is arranged between the two sealing strips of the corresponding sealing strip group, the filter core support frame 1 has a mounting cavity 102 corresponding to the bolt assembly on the side, the mounting cavity 102 is in communication with the sealing grooves 101 on both sides, the bolt assembly includes a bolt 5 and a push block 4, the filter core support frame 1 is provided with a through hole 103 for the bolt 5 to pass through and enter the mounting cavity 102, the bolt 5 is rotatably connected to the filter core support frame 1 by the bearing 6 after passing through the through hole 103 and entering the mounting cavity 102, the bearing 6 is mounted on the inner wall of the filter core support frame 1, and the end of the bolt 5 is connected to the inner circle of the bearing 6. The push block 4 is movably arranged in the mounting cavity 102 and threadedly connected to the bolt 5 by a sliding block assembly, the sliding block assembly has two and is arranged on both sides of the push block 4, the sliding block assembly includes a sliding block 401 and a guide rail 8, the sliding block 401 is connected to the push block 4, the guide rail 8 is mounted on the inner wall of the mounting cavity 102 of the filter core support frame 1, and the sliding block 401 is slidably connected to the guide rail 8. When the bolt 5 rotates, the push block 4 moves axially under the thread pushing, and the sliding block 401 moves along the guide rail 8 synchronously with the push block. The push block 4 has a first inclined surface 402 corresponding to the two sealing strips 3 on both sides, the first inclined surface 402 is inclined from the side close to the sealing strip 3 to the direction away from the central axis of the bolt 5, and the sealing strip support rod 301 has a second inclined surface 304 corresponding to the first inclined surface 402 on the side away from the sealing rubber strip 302. The two first inclined surfaces 402 of the push block 4 are in contact with the second inclined surfaces 304 of the corresponding sealing strips.

[0030] In order to facilitate the operator to rotate the bolt, the air duct 9 is provided with a bolt operation hole corresponding to the bolt of each bolt assembly around.

[0031] Working principle: when the air filter device is installed, the air filter device is first inserted into the corresponding filter groove of the air duct, at this time the sealing strip 3 is retracted in the sealing groove 101 under the tension of the spring 7, which does not affect the insertion operation, after the air filter device is inserted, the bolt 5 of the bolt assembly is screwed, the threads of the bolt 5 push the push block 4 to move towards the sealing strip 3, and the first inclined surface 402 and the second inclined surface 304 push the sealing strips 3 on both sides to move outward and extend out of the sealing groove 101, so that the sealing strip 3 is tightly pressed on the side wall of the filter groove of the air duct 9, that is, the air filter device is installed and fixed, and has good sealing performance, thereby improving the filtering effect of the air filter device.

[0032] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content, or make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change or modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. An air filtration device, comprising a filter element and a filter element support frame, wherein the filter element is installed in the middle of the filter element support frame, the air filtration device is installed in an air duct, and a filter groove is formed in the air duct for the air filtration device to be inserted into, the air filtration device being movably inserted into the filter groove, characterized in that: The air filtering device further comprises a plurality of seal strip groups arranged around the filter core, each seal strip group comprising two seal strips symmetrically arranged on the two end faces of the filter core support frame, the end faces of the filter core support frame being provided with seal grooves for the seal strips to enter or extend out, the seal strips being movably arranged in the seal grooves, a plurality of springs being arranged in the seal grooves, the two ends of the springs being connected with the bottom surface of the seal groove and the end face of the seal strip, the seal strips entering the seal grooves under the action of the spring tension and extending out of the seal grooves against the spring tension under the action of the thrust of the bolt assembly; Each seal strip group corresponds to at least one bolt assembly, the bolt assembly being arranged between the two seal strips of the corresponding seal strip group, the side surface of the filter core support frame being provided with mounting cavities corresponding to the bolt assemblies in one-to-one correspondence, the mounting cavities being in communication with the seal grooves on both sides, the bolt assembly comprising a bolt and a push block, the filter core support frame being provided with through holes for the bolt to enter the mounting cavities, the bolt being rotatably connected with the filter core support frame through a bearing after entering the mounting cavities through the through holes, the push block being movably arranged in the mounting cavities and threadedly sleeved on the bolt through a sliding block assembly, the push block having first inclined surfaces corresponding to the two seal strips on both sides, the first inclined surfaces being inclined away from the central axis of the bolt from the side close to the seal strip, the seal strip having second inclined surfaces corresponding to the first inclined surfaces.

2. The air filtration device of claim 1, wherein: The sliding block assembly has two and is arranged on both sides of the push block, the sliding block assembly comprising a sliding block and a guide rail, the sliding block being connected with the push block, the guide rail being arranged on the inner wall of the mounting cavity of the filter core support frame, the sliding block being slidably connected with the guide rail.

3. The air filtration device of claim 1, wherein: The seal strip comprises a seal rubber strip and a seal strip support rod, the seal rubber strip being arranged on the outside of the seal strip support rod, the second inclined surface being located on the side of the seal strip support rod away from the seal rubber strip.

4. The air filtration device of claim 3, wherein: The side of the seal strip support rod away from the seal rubber strip is provided with grooves corresponding to the springs in one-to-one correspondence, the springs being arranged in the grooves, the end of the spring being connected with the bottom surface of the groove.

5. The air filtration device of claim 1, wherein: The air duct is provided with bolt operation holes corresponding to the bolts of the bolt assemblies in one-to-one correspondence around the air duct.

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