Air purification composite filter screen device

Abstract

The utility model discloses a kind of air purification composite filter screen devices, it is related to air purification equipment technical field, including the opening of the opening of rectangular frame into the shell inside being opened in the front end of shell, the bottom end and top end of shell are fixedly connected with air inlet pipe and exhaust pipe, shell inside is sequentially slidably inserted with metal filter screen layer, activated carbon layer and HEPA filter screen layer from top to bottom, rectangular frame is horizontally slidably connected in shell inside, the left and right sides of the upper and lower ends of rectangular frame are slidably provided with clamping rod, clamping mechanism for driving the clamping rod of left and right sides is provided on shell, the left and right sides of the upper and lower ends of the inner side wall of shell are respectively provided with the clamping groove for the insertion of clamping rod, detachably connected with cover plate at opening.

Description

Technical Field

[0001] This utility model relates to the field of air purification equipment technology, and in particular to an air purification composite filter device. Background Technology

[0002] As people's requirements for air quality continue to increase, air purifiers are being used more and more widely. Existing air purification filter devices are usually composed of multiple filter layers, such as pre-filters, activated carbon filters, and HEPA filters, to filter different pollutants in the air. However, existing filter devices have some shortcomings in their mechanical structure. Replacing the filter requires disassembling it layer by layer, which is cumbersome and prone to misalignment. It is not possible to replace the entire filter, and replacing individual filters is time-consuming, laborious, and has high maintenance costs. Therefore, this application improves upon the existing technology and proposes an air purification composite filter device to solve the problems mentioned in the background technology. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an air purification composite filter device that can solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an air purification composite filter device, comprising an opening at the front end of a housing for a rectangular frame to enter the housing, an air inlet pipe and an exhaust pipe fixedly connected to the bottom and top of the housing respectively, a metal filter layer, an activated carbon layer and a HEPA filter layer slidably inserted into the housing from top to bottom, a rectangular frame horizontally slidably connected to the housing, and locking rods slidably provided on the left and right sides of the upper and lower ends of the rectangular frame, a locking mechanism for driving the locking rods on the left and right sides to move away from or towards each other on the housing, locking grooves for the locking rods to be inserted into the left and right sides of the upper and lower ends of the inner sidewall of the housing, and a cover plate detachably connected to the opening.

[0005] Preferably, there are two locking mechanisms, which are respectively located at the upper and lower ends of the housing.

[0006] Preferably, the locking mechanism includes a movable rod that is slidably connected to a rectangular frame. Movable racks are fixedly connected to the left and right sides of the movable rod, and cams are symmetrically arranged on the left and right sides of the movable rod. The cams are rotatably connected to the rectangular frame, and meshing teeth are fixedly connected to the edges of the cams. The meshing teeth mesh with the movable racks for transmission. One end of the locking rod passes through the side wall of the rectangular frame, and the other end of the locking rod is fixedly connected to the inner side wall of the rectangular frame by a tension spring. The tension spring is coaxially sleeved on the outer side of the locking rod, and the inner end of the locking rod is always in contact with the cam under the elastic force of the tension spring.

[0007] Preferably, the rear end of the movable rod passes through the rear end face of the housing, and a retaining ring is coaxially provided on the outer side of the movable rod. The retaining ring is fixedly connected to the rear end of the housing. A through hole is passed through the outer side of the retaining ring, and a fixing hole is passed through the rear end of the movable rod. When the through hole and the fixing hole are aligned, a fixing pin passes through the through hole and the fixing hole to fix the movable rod to the housing.

[0008] Preferably, sliding blocks are fixedly connected to the left and right sides of the rectangular frame, and sliding grooves are respectively opened on the left and right inner sidewalls of the shell, and the sliding blocks are slidably connected in the sliding grooves.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] When it is necessary to install or replace the metal mesh layer, activated carbon layer, and HEPA filter layer, open the cover plate, and use the snap-fit ​​mechanism to drive the two snap-fit ​​rods to disengage from the snap-fit ​​groove. Then, pull the rectangular frame out to the outside, and then pull out the failed metal mesh layer, activated carbon layer, and HEPA filter layer for replacement. This utility model can replace the entire rectangular frame, thereby replacing all three filters, or it can replace one of the filters individually, depending on the actual situation. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a front sectional view of the present invention;

[0014] Figure 3 This is a top sectional view of the connection between the movable rod, cam, rectangular frame and housing of this utility model.

[0015] Reference numerals: 1. Housing; 2. Opening; 3. Rectangular frame; 4. Metal filter layer; 5. Activated carbon layer; 6. HEPA filter layer; 7. Snap-fit ​​rod; 8. Snap-fit ​​groove; 9. Cover plate; 10. Moving rod; 11. Moving rack; 12. Cam; 13. Engaging tooth; 14. Tension spring; 15. Snap ring; 16. Through hole; 17. Fixing hole; 18. Fixing pin; 19. Sliding block; 20. Slide groove; 21. Pull rod. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: an air purification composite filter device, including an opening 2 at the front end of a housing 1, through which a rectangular frame 3 enters the housing 1. An air inlet pipe and an exhaust pipe are fixedly connected to the bottom and top of the housing 1, respectively. A metal filter layer 4, an activated carbon layer 5, and a HEPA filter layer 6 are slidably inserted into the housing 1 from top to bottom. The rectangular frame 3 is horizontally slidably connected to the housing 1. A locking rod 7 is slidably provided on the left and right sides of the upper and lower ends of the rectangular frame 3. A locking mechanism is provided on the housing 1 to drive the locking rods 7 on the left and right sides to move away from or towards each other. The left and right sides of the upper and lower ends of the inner sidewall of the housing 1 are provided with locking grooves 8 for the locking rods 7 to be inserted. A cover plate 9 is detachably connected to the opening 2. The four corners of the cover plate 9 are fixed to the housing 1 by bolts.

[0018] The working principle of this utility model is as follows: When it is necessary to install or replace the metal filter layer 4, activated carbon layer 5, and HEPA filter layer 6, open the cover plate 9, and drive the two locking rods 7 to disengage from the locking groove 8 through the locking mechanism. Then, pull out the rectangular frame 3 to the outside, and then pull out the failed metal mesh layer 4, activated carbon layer 5, and HEPA filter layer 6 for replacement. This utility model can replace the rectangular frame 3 as a whole, thereby replacing all three filters, or it can replace one of the filters individually, depending on the actual situation.

[0019] This utility model has two locking mechanisms, which are respectively located at the upper and lower ends of the housing 1. Each locking mechanism includes a movable rod 10 that is slidably connected to a rectangular frame 3. Movable racks 11 are fixedly connected to the left and right sides of the movable rod 10. Cams 12 are symmetrically arranged on the left and right sides of the movable rod 10, and the cams 12 are rotatably connected to the rectangular frame 3. Engaging teeth 13 are fixedly connected to the edges of the cams 12, and the engaging teeth 13 mesh with the movable racks 11 for transmission. One end of the locking rod 7 passes through the side wall of the rectangular frame 3, and the other end of the locking rod 7 is fixedly connected to the inner side wall of the rectangular frame 3 by a tension spring 14. The tension spring 14 is coaxially sleeved on the outer side of the locking rod 7, and the inner end of the locking rod 7 remains in contact with the outer side of the locking rod 7 under the elastic force of the tension spring 14. Cam 12 abuts against each other, and the rear end of moving rod 10 passes through the rear end face of housing 1. A retaining ring 15 is coaxially provided on the outer side of moving rod 10. The retaining ring 15 is fixedly connected to the rear end of housing 1. A through hole 16 passes through the outer side of retaining ring 15. A fixing hole 17 passes through the rear end of moving rod 10. When the through hole 16 and the fixing hole 17 are aligned, a fixing pin 18 passes through the through hole 16 and the fixing hole 17 to fix moving rod 10 to housing. This utility model moves moving rod 10 back and forth, thereby driving moving rack 11 to move back and forth. Moving rack 11 drives cam 12 to rotate. Thus, under the left and right pressure of tension spring 14, locking rod 7 always abuts against cam 12, thereby realizing left and right movement of locking rod 7, that is, disengaging from locking groove 8 or inserting into locking groove 8.

[0020] Specifically, sliding blocks 19 are fixedly connected to the left and right sides of the rectangular frame 33, and sliding grooves 20 are respectively opened on the left and right inner sidewalls of the housing 1. The sliding blocks 19 are slidably connected in the sliding grooves 20. A pulling rod 21 is fixedly connected to the front side of the rectangular frame 3 to facilitate pulling the rectangular frame 3. Multiple vent holes are respectively passed through the top and bottom of the rectangular frame 3 to facilitate the flow of gas.

[0021] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An air purification composite filter device, characterized in that: The enclosure includes an opening at the front end of the housing for a rectangular frame to enter the housing. An air intake pipe and an exhaust pipe are fixedly connected to the bottom and top of the housing, respectively. Inside the housing, a metal filter layer, an activated carbon layer, and a HEPA filter layer are slidably inserted from top to bottom. The rectangular frame is horizontally slidably connected inside the housing. Snap-fit ​​rods are slidably provided on the left and right sides of the upper and lower ends of the rectangular frame. The housing is provided with a snap-fit ​​mechanism for driving the snap-fit ​​rods on the left and right sides to move away from or towards each other. Snap-fit ​​grooves for inserting snap-fit ​​rods are provided on the left and right sides of the upper and lower ends of the inner sidewall of the housing. A cover plate is detachably connected to the opening.

2. The air purification composite filter device according to claim 1, characterized in that: There are two locking mechanisms, which are respectively located at the upper and lower ends of the housing.

3. The air purification composite filter device according to claim 2, characterized in that: The locking mechanism includes a movable rod that is slidably connected to a rectangular frame. Movable racks are fixedly connected to the left and right sides of the movable rod, and cams are symmetrically arranged on the left and right sides of the movable rod. The cams are rotatably connected to the rectangular frame, and meshing teeth are fixedly connected to the edges of the cams. The meshing teeth mesh with the movable racks for transmission. One end of the locking rod passes through the side wall of the rectangular frame, and the other end of the locking rod is fixedly connected to the inner side wall of the rectangular frame by a tension spring. The tension spring is coaxially sleeved on the outer side of the locking rod, and the inner end of the locking rod is always in contact with the cam under the elastic force of the tension spring.

4. The air purification composite filter device according to claim 3, characterized in that: The rear end of the movable rod passes through the rear end face of the housing, and a retaining ring is coaxially provided on the outer side of the movable rod. The retaining ring is fixedly connected to the rear end of the housing. A through hole is passed through the outer side of the retaining ring, and a fixing hole is passed through the rear end of the movable rod. When the through hole and the fixing hole are aligned, a fixing pin passes through the through hole and the fixing hole to fix the movable rod to the housing.

5. The air purification composite filter device according to claim 4, characterized in that: Sliding blocks are fixedly connected to the left and right sides of the rectangular frame, and sliding grooves are respectively opened on the left and right inner sidewalls of the shell. The sliding blocks are slidably connected in the sliding grooves, and a pull rod is fixedly connected to the front side of the rectangular frame.

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