External air filter

Abstract

The utility model discloses an external air filter in the technical field of air filters, which comprises an outer shell, a hanging ring connected to the top of the outer shell, two groups of extrusion plates slidably arranged in the hanging ring, an air inlet and an air outlet respectively arranged on two side walls of the outer shell, and a fan connected to the left side of an inner cavity of the outer shell through a support. An L-shaped fixing part is arranged at the top of the right end of the inner wall of the outer shell, a U-shaped frame is arranged at the bottom of the L-shaped fixing part, a through hole is formed in the face, close to the draught fan, of the U-shaped frame, multiple sets of filter elements are arranged on the inner wall of the U-shaped frame, a connecting groove is formed in the face, close to the air outlet, of the U-shaped frame, a U-shaped box is installed at the top end of the outer wall of the right end of the outer shell, and an operating rod is slidably connected into the U-shaped box. A clamping block is connected to the bottom of the operating rod and plays a role in reinforcing supporting pieces hung inside and outside the hanging ring, and the stability of the air filter hung outside the wall is improved; and moreover, the U-shaped frame and the outer shell are quickly disassembled and assembled, and the filter element in the U-shaped frame is convenient to clean and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to an external air filter. Background Art

[0002] An external air filter is an air purification device that can be directly installed at the air outlet. Its main function is to filter impurities such as dust, pollen, bacteria and odor in the air, making breathing fresher and healthier. Existing external air filters are usually equipped with a hanging ring, which is connected to the support on the wall through the hanging ring. However, there is no structure to reinforce the support on the existing hanging ring. The support connected to the hanging ring is prone to shaking, causing the air filter to shake. The air filter is not stable enough when used. For this reason, we propose an external air filter. Utility Model Content

[0003] The purpose of the utility model is to provide an external air filter to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An external air filter comprises an outer shell, a hanging ring is connected to the top of the outer shell, two groups of slidably arranged extrusion plates are arranged in the hanging ring, two side walls of the outer shell are respectively provided with an air inlet and an air outlet, a fan is connected to the left side of the inner cavity of the outer shell through a bracket, an L-shaped fixing piece is arranged at the top of the right end of the inner wall of the outer shell, and a U-shaped frame is arranged at the bottom of the L-shaped fixing piece, a through hole is arranged on a side of the U-shaped frame close to the fan, a plurality of groups of filter elements are arranged on the inner wall of the U-shaped frame, and the bottom of the U-shaped frame passes through the bottom wall of the outer shell, a connecting groove is arranged on a side of the U-shaped frame close to the air outlet, a U-shaped box is installed on the top of the outer wall of the right end of the outer shell, an operating rod is slidably connected in the U-shaped box, and a clamping block adapted to the connecting groove is connected to the bottom of the operating rod.

[0006] Furthermore: through grooves are provided at both ends of the top of the hanging ring, and sliding rods are slidably connected in the two sets of through grooves, and the bottoms of the two sets of sliding rods are respectively connected to the tops of the two sets of extrusion plates, and a compression spring is installed between the outer side surface of the extrusion plate and the inner wall of the hanging ring.

[0007] Furthermore: two groups of slide grooves are opened on the top of the outer shell, and moving blocks are slidably connected in the two groups of slide grooves, and the tops of the two groups of moving blocks are respectively connected to the bottoms of the two groups of extrusion plates.

[0008] Furthermore: an outer wall of the outer shell is provided with an opening, and the opening is connected with the connecting groove and the inner cavity of the U-shaped box.

[0009] Furthermore: a sliding plate is connected to the outer wall of the bottom end of the operating rod, and the sliding plate is slidably connected to the inner wall of the U-shaped box, and two groups of return springs are connected between the outer side surface of the sliding plate and the inner wall of the U-shaped box.

[0010] Furthermore: the opening end of the U-shaped frame faces the air outlet, and the bottom end of the outer shell is provided with a through opening matched with the U-shaped frame.

[0011] Furthermore: a handle is connected to the bottom of the U-shaped frame, and a non-slip rubber sleeve is sleeved on the hand-held end of the handle.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can make the two groups of extrusion plates in the hanging ring always move in relative directions through the elasticity of the compression spring, thereby reinforcing the supporting parts hung inside and outside the hanging ring, avoiding shaking of the external supporting parts when connected to the hanging ring, and improving the stability of the air filter hung on the wall; through the action of the operating rod, the sliding plate and the return spring in the U-shaped box, the clamping block at the bottom can be connected to or disconnected from the connecting groove provided in the U-shaped frame; after the clamping block is disconnected from the connecting groove, the U-shaped frame can slide out of the inner cavity of the outer shell, thereby realizing quick disassembly and assembly of the U-shaped frame and the outer shell, and facilitating the cleaning and replacement of the filter element in the U-shaped frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the hanging ring and the outer shell of the utility model;

[0016] Figure 3 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0017] In the figure: 1. outer shell; 2. air inlet; 3. air outlet; 4. hanging ring; 5. fan; 6. L-shaped fixing piece; 7. U-shaped frame; 8. through hole; 9. filter element; 10. through groove; 11. sliding rod; 12. extrusion plate; 13. sliding groove; 14. moving block; 15. compression spring; 16. opening; 17. U-shaped box; 18. operating lever; 19. sliding plate; 20. reset spring; 21. clamping block; 22. connecting groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1:

[0020] See also Figure 1-3 The utility model provides a technical solution: an external air filter, comprising an outer shell 1, a hanging ring 4 is connected to the top of the outer shell 1, two groups of sliding extrusion plates 12 are arranged in the hanging ring 4, and air inlets 2 and air outlets 3 are respectively opened on both side walls of the outer shell 1, and a fan 5 is connected to the left side of the inner cavity of the outer shell 1 through a bracket, an L-shaped fixing piece 6 is arranged on the top of the right end of the inner wall of the outer shell 1, and a U-shaped frame 7 is arranged at the bottom of the L-shaped fixing piece 6, a through hole 8 is opened on the side of the U-shaped frame 7 close to the fan 5, a plurality of groups of filter elements 9 are arranged on the inner wall of the U-shaped frame 7, and the bottom of the U-shaped frame 7 passes through the bottom wall of the outer shell 1, and a connecting groove 22 is opened on the side of the U-shaped frame 7 close to the air outlet 3, a U-shaped box 17 is installed on the top of the outer wall of the right end of the outer shell 1, and an operating rod 18 is slidably connected in the U-shaped box 17, and a clamping block 21 adapted to the connecting groove 22 is connected to the bottom of the operating rod 18.

[0021] When in use, place the air inlet 2 on the outer shell 1 close to the air inlet end, fix the support member on the wall in advance, and use the connection between the hanging ring 4 and the support member to suspend the outer shell 1. Through the function of two sets of sliding extrusion plates 12, the two sets of extrusion plates 12 always move in relative directions, which reinforces the support members hung inside and outside the hanging ring 4, avoids shaking when the external support member is connected to the hanging ring 4, and improves the stability of the air filter hanging on the wall; the electrical end of the fan 5 is electrically connected to the external power supply and the electrical end of the controller. After the fan 5 works, it transports air from the air inlet 2 to the outer shell 1 cavity, the air then passes through the through hole 8, and is filtered by the multiple groups of filter elements 8 in the U-shaped frame 7, wherein the filter element 8 is a common filtering structure of existing air filters, and the final air is discharged from the air outlet 3 after being filtered and purified. The L-shaped fixing member 6 is fixedly connected to the inner wall of the outer shell 1. When the clamping block 21 is separated from the connecting groove 22, the position of the U-shaped frame 7 is no longer restricted, and the U-shaped frame 7 can slide out of the inner cavity of the outer shell 1, realizing the rapid disassembly and assembly of the U-shaped frame 7 and the outer shell 1, facilitating the cleaning and replacement of the multiple groups of filter elements 9 in the U-shaped frame 7, and avoiding the failure of the filter element 8 due to long-term use and affecting the filtering effect of the air.

[0022] Preferably, through grooves 10 are provided at both ends of the top of the hanging ring 4, and sliding rods 11 are slidably connected in the two groups of through grooves 10, and the bottoms of the two groups of sliding rods 11 are respectively connected to the tops of the two groups of extrusion plates 12, and compression springs 15 are installed between the outer side surfaces of the extrusion plates 12 and the inner wall of the hanging ring 4; through the sliding connection between the sliding rods 11 and the through grooves 10, the extrusion plates 12 can be operated to move, and when the two groups of extrusion plates 12 move in opposite directions, the compression springs 15 are compressed. After the sliding rods 11 are released, the elasticity of the compression springs 15 keeps the two groups of extrusion plates 12 moving in relative directions at all times, thereby achieving clamping and fixing the position of the external support.

[0023] Preferably, two groups of slide grooves 13 are opened on the top of the outer shell 1, and moving blocks 14 are slidably connected in the two groups of slide grooves 13. The tops of the two groups of moving blocks 14 are respectively connected to the bottoms of the two groups of extrusion plates 12; the moving blocks 14 are fixedly connected to the extrusion plates 12 to limit the bottoms of the sliding extrusion plates 12.

[0024] Preferably, an outer wall of the outer shell 1 is provided with an opening 16 , and the opening 16 is communicated with the connecting groove 22 and the inner cavity of the U-shaped box 17 .

[0025] Preferably, a sliding plate 19 is connected to the outer wall of the bottom end of the operating rod 18, and the sliding plate 19 is slidably connected to the inner wall of the U-shaped box 17, and two sets of return springs 20 are connected between the outer side surface of the sliding plate 19 and the inner wall of the U-shaped box 17;

[0026] The U-shaped box 17 is fixedly connected to the outer wall of the outer shell 1. When the U-shaped frame 7 is disassembled from the outer shell 1, the operating rod 18 in the U-shaped box 17 is pulled outward, and the sliding plate 19 is moved outward at this time, the return spring 20 is compressed, and the clamping block 21 is received in the inner cavity of the U-shaped box 17 through the opening 16. At this time, after the position of the U-shaped frame 7 is not restricted, the U-shaped frame 7 can be taken out by pulling the U-shaped frame 7 downward. During installation, when the top of the U-shaped frame 7 is in contact with the bottom of the L-shaped fixing piece 6, the connecting groove 22 is aligned with the opening 16, and the operating rod 18 is released. The compressed return spring 20 can automatically return to its position, that is, it drives the clamping block 21 to move. When the clamping block 21 is connected to the connecting groove 22, the position of the U-shaped frame 7 is fixed.

[0027] Preferably, the opening end of the U-shaped frame 7 faces the air outlet 3 , and a through opening matching the U-shaped frame 7 is formed at the bottom end of the outer shell 1 .

[0028] Embodiment 2:

[0029] Reference Figure 1 This embodiment is different from the first embodiment in that a handle is connected to the bottom of the U-shaped frame 7, and the hand-held end of the handle is covered with an anti-skid rubber sleeve; the handle facilitates the pulling out of the U-shaped frame 7, and the anti-skid rubber sleeve plays an anti-skid role to prevent the hand from slipping when holding the handle.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An external air filter, comprising an outer shell (1), characterized in that: The top of the outer shell (1) is connected to a hanging ring (4), and two groups of sliding extrusion plates (12) are arranged inside the hanging ring (4). The two side walls of the outer shell (1) are respectively provided with an air inlet (2) and an air outlet (3). The left side of the inner cavity of the outer shell (1) is connected to a fan (5) via a bracket. The top of the right end of the inner wall of the outer shell (1) is provided with an L-shaped fixing piece (6), and the bottom of the L-shaped fixing piece (6) is provided with a U-shaped frame (7). The U-shaped frame (7) is close to the fan (5). A through hole (8) is provided on the surface of the U-shaped frame (7), a plurality of filter elements (9) are provided on the inner wall of the U-shaped frame (7), and the bottom of the U-shaped frame (7) passes through the bottom wall of the outer shell (1), a connecting groove (22) is provided on a side of the U-shaped frame (7) close to the air outlet (3), a U-shaped box (17) is installed on the top of the outer wall of the right end of the outer shell (1), and an operating rod (18) is slidably connected in the U-shaped box (17), and a clamping block (21) adapted to the connecting groove (22) is connected to the bottom of the operating rod (18).

2. The external air filter according to claim 1, characterized in that: Both ends of the top of the hanging ring (4) are provided with through grooves (10), and sliding rods (11) are slidably connected in the two groups of through grooves (10), and the bottoms of the two groups of sliding rods (11) are respectively connected to the tops of the two groups of extrusion plates (12), and a compression spring (15) is installed between the outer side surface of the extrusion plate (12) and the inner wall of the hanging ring (4).

3. The external air filter according to claim 1, characterized in that: The top of the outer shell (1) is provided with two groups of slide grooves (13), and moving blocks (14) are slidably connected in the two groups of slide grooves (13). The tops of the two groups of moving blocks (14) are respectively connected to the bottoms of the two groups of extrusion plates (12).

4. The external air filter according to claim 1, characterized in that: The outer wall of the outer shell (1) is provided with an opening (16), and the opening (16) is connected to the connecting groove (22) and the inner cavity of the U-shaped box (17).

5. The external air filter according to claim 1, characterized in that: The outer wall of the bottom end of the operating rod (18) is connected with a sliding plate (19), and the sliding plate (19) is slidably connected with the inner wall of the U-shaped box (17), and two groups of return springs (20) are connected between the outer side surface of the sliding plate (19) and the inner wall of the U-shaped box (17).

6. The external air filter according to claim 1, characterized in that: The open end of the U-shaped frame (7) faces the air outlet (3), and the bottom end of the outer shell (1) is provided with a through opening that matches the U-shaped frame (7).

7. The external air filter according to claim 1, characterized in that: The bottom of the U-shaped frame (7) is connected to a handle, and the hand-held end of the handle is covered with an anti-slip rubber sleeve.

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