Fresh air filter screen

Abstract

The utility model provides a fresh air filter screen, which belongs to the technical field of filter screens and comprises a shell and a filter screen. A plurality of meshes are formed in a first side surface of the shell, and an inlet / outlet is formed in a second side surface opposite to the first side surface, so that the filter screen enters and exits the shell; two groups of clamping plates are arranged in the shell; the two groups of clamping plates are respectively close to a third side surface and a fourth side surface which are opposite to each other of the shell, and form a clamping area with the third side surface and the fourth side surface; the two ends of the filter screen can be inserted into the clamping areas to achieve detachable connection of the filter screen. The opening in one side of the shell is used for the filter screen to enter and exit, the shell does not need to be opened when the filter screen is assembled and disassembled, convenience is achieved, and meanwhile raw materials of the shell can be saved. The two ends of the filter screen can be fixed through a clamping area formed by the clamping plates and the side wall of the shell, the structure is simple, and mounting and dismounting are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filter screens, in particular to a fresh air filter screen. Background Art

[0002] The fresh air filter is a structure used by the fresh air system to filter impurities in the air. To ensure the filtering effect of the fresh air filter, the filter needs to be replaced regularly. To facilitate the replacement of the filter, the existing fresh air filter includes a shell and a filter detachably connected to the shell. When removing the filter, the shell must be opened first, and then the filter is replaced, which is inconvenient to operate; at the same time, the existing filter is not firmly installed and is easy to fall off, resulting in poor filtering effect. To this end, the utility model provides a fresh air filter. Utility Model Content

[0003] The utility model aims to provide a fresh air filter.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0005] A fresh air filter, comprising: a housing and a filter; the filter is detachably connected to the inside of the housing;

[0006] The first side of the housing is provided with a plurality of mesh holes, and the second side opposite to the first side is provided with an inlet and outlet for the filter to enter and exit the housing;

[0007] Two groups of clamping plates are arranged inside the shell; the two groups of clamping plates are respectively close to the third side surface and the fourth side surface opposite to the shell, and form a clamping area with the third side surface and the fourth side surface; the two ends of the filter screen can be inserted into the clamping area to realize the detachable connection of the filter screen;

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme, the filter screen has a wave structure and is retractable.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme, a plurality of straps are arranged on the filter; the straps are fixedly connected to the top surface and / or bottom surface of the filter, and both ends extend outside the filter; each group of the splints includes a plurality of spaced-apart splints; the straps are arranged corresponding to the gap between two adjacent splints.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme, the top of the splint close to the third side has a chamfer on the side facing the third side; the top of the splint close to the fourth side has a chamfer on the side facing the fourth side.

[0011] On the basis of the above scheme and as a preferred scheme of the above scheme, the top end of the third side surface is chamfered toward the side of the clamping plate; the top end of the fourth side surface is chamfered toward the side of the clamping plate.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme, the splint close to the third side is provided with reinforcing ribs on the side away from the third side; the splint close to the fourth side is provided with reinforcing ribs on the side away from the fourth side.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme, the shell is provided with a side baffle on the second side; the number of the side baffles is two, which are respectively arranged on the top of the fifth side and the sixth side of the shell and extend toward the center of the shell.

[0014] The beneficial effects of the utility model are as follows: the opening on one side of the housing of the utility model is used for the filter to enter and exit, and the housing does not need to be opened when installing and removing the filter, which is more convenient and can also save the original material of the housing. The clamping area formed by the clamping plate and the side wall of the housing can fix the two ends of the filter, and the structure is simple, and the installation and disassembly are convenient. The interference fit between the filter and the clamping area can improve the connection reliability, and the filter is not easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 It is a bottom schematic diagram of the utility model.

[0017] Figure 3 This is a schematic diagram of the shell structure of the utility model.

[0018] Figure 4 It is a schematic diagram of the structure of the shell part of the utility model.

[0019] Figure 5 This is a schematic diagram of the filter structure of the utility model.

[0020] In the figure: 1. outer shell; 2. filter screen; 3. mesh; 4. clamping plate; 5. clamping area; 6. binding strap; 7. reinforcing rib; 8. side baffle. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1 and Figure 2 As shown, a fresh air filter comprises: a housing 1 and a filter 2, wherein the filter 2 is detachably connected to the inside of the housing 1. The housing 1 is a rectangular parallelepiped structure, comprising a first side surface and a second side surface opposite to each other, a third side surface and a fourth side surface opposite to each other, and a fifth side surface and a sixth side surface opposite to each other.

[0023] The first side of the housing 1 is provided with a plurality of mesh holes 3, and the second side opposite to the first side is provided with an inlet and outlet for the filter 2 to enter and exit the housing 1. The mesh holes 3 are evenly distributed on the first side of the housing 1, and are preferably in a diamond shape. The second side is completely open to form the inlet and outlet.

[0024] like Figure 3 and Figure 4 As shown, two groups of clamping plates 4 are arranged inside the housing 1. The two groups of clamping plates 4 are respectively close to the third side and the fourth side opposite to the housing 1, and form two clamping areas 5 with the third side and the fourth side. Both ends of the filter 2 can be inserted into the clamping area 5 to realize the detachable connection of the filter 2. Specifically, each group of clamping plates 4 includes a plurality of spaced apart clamping plates 4, the intervals between the clamping plates 4 are equal, and the bottom of the clamping plates 4 is fixedly connected to the first side of the housing 1. In this embodiment, the number of each group of clamping plates 4 is three.

[0025] Preferably, the top of the clamping plate 4 near the third side has a chamfer on the side facing the third side, and the top of the clamping plate 4 near the fourth side has a chamfer on the side facing the fourth side. The chamfer makes the entrance of the clamping area 5 larger, making it easier to insert the filter 2.

[0026] Furthermore, the top of the clamping plate 4 near the third side has a chamfer on one side facing the third side, and the top of the clamping plate 4 near the fourth side has a chamfer on one side facing the fourth side. The side chamfers can further expand the entrance of the clamping area 5 so that the filter 2 can enter the clamping area 5.

[0027] like Figure 4 As shown, in order to improve the strength of the clamping plate 4, a reinforcing rib 7 is provided on the side of the clamping plate 4 close to the third side and away from the third side. A reinforcing rib 7 is provided on the side of the clamping plate 4 close to the fourth side and away from the fourth side. The reinforcing rib 7 extends from the top to the bottom of the clamping plate 4 and is fixedly connected to the first side of the housing 1. The reinforcing rib 7 can improve the structural strength of the clamping plate 4 and prevent the clamping plate 4 from tilting and being damaged when the filter screen 4 is inserted.

[0028] Among them, Figure 5 As shown, the filter screen 2 is in a wave structure and is retractable, and the waves at both ends are pressed together and inserted into the clamping area 5, with which the filter screen 2 and the housing 1 are fixedly connected by interference fit.

[0029] Among them, a plurality of straps 6 are arranged on the filter screen 2. The straps 6 are fixedly connected to the top surface and / or the bottom surface of the filter screen 2, and the two ends extend to the outside of the filter screen 2. The straps 6 are arranged corresponding to the gap between the two adjacent clamps 4. The two ends of the straps 6 extend to the outside of the filter screen 2 so as to perform additional bundling and fixing after the filter screen 2 is fixed. When bundling, the straps 6 pass through the mesh 3 and are tied and fixed to improve the connection firmness of the filter screen 2. The width of the straps 6 is adapted to the gap between the two adjacent clamps 4. When the filter screen 2 is inserted into the clamping area 5, the straps 6 are inserted through the gap to avoid the filter screen 2 being unable to be inserted into the clamping area 5 due to the existence of the straps 6.

[0030] The tie band 6 is fixedly connected to the top and / or bottom surface of the wave structure filter 2 by gluing or other methods. During production, the filter 2 is stretched to a suitable length and then fixedly connected to the tie band 6. Since the wave crests of the wave structure are fixedly connected to the tie band 6, when the filter 2 is fixed in the housing 1, the spacing between its wave crests can remain stable, and there will be no problem of long spacing between some wave crests and short spacing between others. At the same time, under the action of external forces (such as wind), the wave crests of the filter 2 will not move or tilt, ensuring that the filter 2 has a good filtering effect.

[0031] The housing 1 is provided with a side baffle 8 on the second side. There are two side baffles 8, which are respectively provided on the top of the fifth side and the sixth side of the housing 1 and extend toward the center of the housing 1. The function of the side baffle 8 is to strengthen the fixation of the middle part of the filter screen 2 to prevent the middle part of the filter screen 2 from detaching from the housing 1.

[0032] During installation: first insert the filter 2 into the housing 1 from the inlet and outlet, then insert one end of the filter into the clamping area 5, and then insert the other end into another clamping area 5, and then use the straps 6 at both ends to firmly fix the filter 2 in the housing 1.

[0033] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A fresh air filter, characterized in that: include: A housing (1) and a filter (2); the filter (2) is detachably connected to the inside of the housing (1); A first side surface of the housing (1) is provided with a plurality of mesh holes (3), and a second side surface opposite to the first side surface is provided with an inlet and outlet for the filter screen (2) to enter and exit the housing (1); Two groups of clamping plates (4) are arranged inside the shell (1); the two groups of clamping plates (4) are respectively close to the third side surface and the fourth side surface opposite to the shell (1), and form a clamping area (5) with the third side surface and the fourth side surface; the two ends of the filter screen (2) can be inserted into the clamping area (5) to realize the detachable connection of the filter screen (2).

2. A fresh air filter according to claim 1, characterized in that: The filter screen (2) has a wave structure and is retractable.

3. A fresh air filter according to claim 2, characterized in that: A plurality of straps (6) are provided on the filter screen (2); the straps (6) are fixedly connected to the top surface and / or the bottom surface of the filter screen (2), and both ends extend outside the filter screen (2); each group of the clamping plates (4) comprises a plurality of separated clamping plates (4); the straps (6) are provided corresponding to the gap between two adjacent clamping plates (4).

4. A fresh air filter according to claim 1, characterized in that: The top end of the clamping plate (4) close to the third side surface is chamfered on the side facing the third side surface; the top end of the clamping plate (4) close to the fourth side surface is chamfered on the side facing the fourth side surface.

5. A fresh air filter according to claim 4, characterized in that: The top end of the third side surface is provided with a chamfer towards the side of the clamping plate (4); and the top end of the fourth side surface is provided with a chamfer towards the side of the clamping plate (4).

6. A fresh air filter according to claim 1, characterized in that: The clamping plate (4) close to the third side surface is provided with a reinforcing rib (7) on the side surface away from the third side surface; the clamping plate (4) close to the fourth side surface is provided with a reinforcing rib (7) on the side surface away from the fourth side surface.

7. The fresh air filter according to claim 1, characterized in that: The shell (1) is provided with a side baffle (8) on the second side surface; the side baffles (8) are two in number, respectively provided on the top of the fifth side surface and the sixth side surface of the shell (1), and extending towards the center of the shell (1).

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