Composite filter screen

Abstract

The utility model relates to the technical field of composite filter screens, and discloses a composite filter screen which comprises a mounting shell, a filter screen layer is fixedly connected to the interior of the mounting shell, an elastic supporting frame is connected to the interior of the filter screen layer, an elastic connecting rod is fixedly connected to one side of the elastic supporting frame, and a shifting assembly is fixedly connected to the side, close to the elastic connecting rod, of the mounting shell. According to the composite filter screen, after air passes through the filter screen layer, the air can blow the stirring assembly, the elastic connecting rod is stirred through the stirring assembly to generate vibration, then the elastic supporting frame drives the filter screen layer to vibrate together, dust is not prone to being attached to the filter screen layer, and the cleaning frequency is reduced while the filtering efficiency is guaranteed.

Description

Technical Field

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

[0002] The composite filter is a high-efficiency filter, which is a filter unit formed by nesting multiple different types of filter materials. It can filter particles of different sizes, viscosities, and forms, as well as microorganisms, viruses, odors and other harmful substances. It is a widely used environmentally friendly material product.

[0003] For example, in the prior art, the patent with the patent authorization announcement number CN215842165U discloses a composite filter screen, including a frame and a plugboard, the frame is a rectangular frame, the side of the frame is provided with a first slot and a second slot, the first slot and the second slot are evenly distributed on the side of the frame, the front of the frame is provided with a rectangular hollow, and a diamond mesh frame is attached to the rectangular hollow; the first plugboard is provided in the first slot, the first plugboard is a foldable plugboard, the middle of the first plugboard is a hinge device, the two ends are buckle devices, the top of the first plugboard is provided with a lifting piece and an annular slot, the slot is corresponding to the snap pin at the side end of the frame, and the middle of the first plugboard is provided with a HEPA filter layer; the second plugboard is provided in the second slot, the second plugboard has the same structure as the first plugboard, and the middle of the second plugboard is provided with an activated carbon fiber layer. Compared with the prior art, this composite filter screen increases the number of filter screen layers, improves the filtering effect, and in terms of filter screen replacement, filters with different functions can be replaced as needed.

[0004] Although the composite filter in the above patent can be replaced with filters of different functions as needed, a large amount of dust will be contaminated on the windward side of the filter during use, and the dust is difficult to separate from the filter, which will cause the filter to be blocked. In order to maintain the ventilation and filtering function, the filter can only be cleaned frequently. Therefore, the existing composite filter has certain defects and is inconvenient to use. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a composite filter screen to solve the problems raised by the background technology, so that the filter screen does not need to be cleaned frequently.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite filter screen, including a mounting shell, a filter screen layer is fixedly connected to the interior of the mounting shell, an elastic support frame is connected to the interior of the filter screen layer, an elastic connecting rod is fixedly connected to one side of the elastic support frame, and a toggle assembly is fixedly connected to the side of the mounting shell close to the elastic connecting rod.

[0007] Furthermore, the toggle assembly includes a wind condenser hood, a connecting frame, a fan and a cam. The wind condenser hood is fixedly connected to one side of the mounting shell. The wind condenser hood is funnel-shaped, and the end of the wind condenser hood away from the mounting shell is fixedly connected to the connecting frame. The middle position of the connecting frame is rotatably connected to the fan, and the end of the fan close to the mounting shell is fixedly connected to the cam, and the cam matches the elastic connecting rod.

[0008] Furthermore, a receiving groove is provided at the bottom of the inner side of the installation shell, and the area of ​​the receiving groove is equal to the projected area of ​​the filter mesh layer.

[0009] Furthermore, the filter mesh layer is arranged obliquely, and the distance between the lower end of the filter mesh layer and the cam is smaller than the distance between the upper end of the filter mesh layer and the cam.

[0010] Furthermore, the elastic support frame is arranged in a comb shape.

[0011] Furthermore, the end of the elastic connecting rod is circular.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] For this type of composite filter, after air passes through the filter layer, the air will blow the toggle component, which will drive the elastic connecting rod to generate vibration, and then the elastic support frame will drive the filter layer to vibrate together, making it difficult for dust to adhere to the filter layer, thereby ensuring the filtration efficiency while reducing the cleaning frequency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a structural schematic diagram of another perspective of the utility model as a whole;

[0016] Figure 3 A cross-sectional view of the utility model as a whole;

[0017] Figure 4 This is a schematic diagram of the structure of the elastic support frame of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the fan of the utility model.

[0019] In the figure: 1. mounting shell; 2. receiving groove; 3. filter screen layer; 4. elastic supporting frame; 5. elastic connecting rod; 6. wind collecting cover; 7. connecting frame; 8. fan; 9. cam. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-5 A composite filter screen comprises a mounting shell 1, a filter screen layer 3 is fixedly connected to the interior of the mounting shell 1, an elastic support frame 4 is connected to the interior of the filter screen layer 3, an elastic connecting rod 5 is fixedly connected to one side of the elastic support frame 4, and a toggle assembly is fixedly connected to one side of the mounting shell 1 close to the elastic connecting rod 5.

[0022] In the composite filter of the utility model, after air passes through the filter mesh layer 3, the air will blow the toggle assembly, which will toggle the elastic connecting rod 5 to generate vibration, thereby causing the elastic support frame 4 to drive the filter mesh layer 3 to vibrate together, making it difficult for dust to adhere to the filter mesh layer 3, thereby reducing the cleaning frequency while ensuring the filtering efficiency; at the same time, the filter mesh layer 3 is sleeved on the elastic support frame 4, and the elastic support frame 4 is matched with the mounting shell 1 (the matching state means that the elastic support frame 4 can be restricted by the mounting shell 1 and will not separate from the mounting shell 1, but at the same time the elastic support frame 4 can vibrate with a certain amplitude in the mounting shell 1).

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the toggle assembly includes a wind collecting cover 6, a connecting frame 7, a fan 8 and a cam 9. The wind collecting cover 6 is fixedly connected to one side of the mounting shell 1. The wind collecting cover 6 is funnel-shaped. The end of the wind collecting cover 6 away from the mounting shell 1 is fixedly connected to the connecting frame 7. The middle position of the connecting frame 7 is rotatably connected to the fan 8. The end of the fan 8 close to the mounting shell 1 is fixedly connected to the cam 9, and the cam 9 matches the elastic connecting rod 5.

[0024] Specifically, when air passes through the fan 8, it will blow the fan 8 to rotate, and the rotation of the fan 8 will drive the cam 9 to rotate synchronously. Since the end of the cam 9 is elliptical, the lengths of its major axis and minor axis are different. Therefore, when it is in a vertical state (that is, when the minor axis is horizontal), the elastic connecting rod 5 will not contact the cam 9, and when the cam 9 rotates from the vertical state to the horizontal state, the cam 9 will gradually squeeze and push the elastic connecting rod 5. When the cam 9 is in the horizontal state, the squeezing force of the cam 9 on the elastic connecting rod 5 is the largest, and after the cam 9 continues to rotate, the elastic connecting rod 5 suddenly loses its squeezing force and moves in the direction of the cam 9 under the action of its own elasticity, thereby generating vibration. The vibration is transmitted to the filter mesh layer 3 through the elastic connecting rod 5 and the elastic support frame 4, so that the dust attached to the filter mesh layer 3 is shaken off.

[0025] like Figure 1 and Figure 3 As shown, a receiving groove 2 is provided at the bottom of the inner side of the mounting shell 1, and the area of ​​the receiving groove 2 is equal to the projected area of ​​the filter layer 3. The receiving groove 2 receives the dust shaken off by the filter layer 3 to prevent the dust from flowing around and making it difficult to clean.

[0026] like Figure 1 and Figure 3 As shown, the filter mesh layer 3 is tilted, and the distance between the lower end of the filter mesh layer 3 and the cam 9 is smaller than the distance between the upper end of the filter mesh layer 3 and the cam 9. The tilted filter mesh layer 3 makes it difficult for the dust to reattach to the filter mesh layer 3.

[0027] like Figure 4 As shown, the elastic support frame 4 is arranged in a comb shape. The comb-shaped elastic support frame 4 can fully contact with the filter layer 3 to ensure that the filter layer 3 is vibrated together with it, and can also reduce weight to avoid its own weight being too large, resulting in a shortened vibration time.

[0028] like Figure 4 As shown, the end of the elastic connecting rod 5 is arranged in a circular shape. The circular arrangement makes the elastic connecting rod 5 less likely to be damaged by friction.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A composite filter screen, characterized in that: The invention comprises a mounting shell (1), a filter screen layer (3) is fixedly connected to the interior of the mounting shell (1), an elastic support frame (4) is connected to the interior of the filter screen layer (3), an elastic connecting rod (5) is fixedly connected to one side of the elastic support frame (4), and a toggle assembly is fixedly connected to one side of the mounting shell (1) close to the elastic connecting rod (5).

2. A composite filter screen according to claim 1, characterized in that: The toggle assembly comprises a wind collecting cover (6), a connecting frame (7), a fan (8) and a cam (9); one side of the mounting shell (1) is fixedly connected to the wind collecting cover (6); the wind collecting cover (6) is arranged in a funnel shape; one end of the wind collecting cover (6) away from the mounting shell (1) is fixedly connected to the connecting frame (7); the middle position of the connecting frame (7) is rotatably connected to the fan (8); one end of the fan (8) close to the mounting shell (1) is fixedly connected to the cam (9); the cam (9) matches the elastic connecting rod (5).

3. A composite filter screen according to claim 1, characterized in that: A receiving groove (2) is provided at the bottom of the inner side of the installation shell (1), and the area of ​​the receiving groove (2) is equal to the projected area of ​​the filter screen layer (3).

4. A composite filter screen according to claim 2, characterized in that: The filter mesh layer (3) is arranged obliquely, and the distance between the lower end of the filter mesh layer (3) and the cam (9) is smaller than the distance between the upper end of the filter mesh layer (3) and the cam (9).

5. A composite filter screen according to claim 1, characterized in that: The elastic support frame (4) is arranged in a comb shape.

6. A composite filter screen according to claim 1, characterized in that: The end of the elastic connecting rod (5) is arranged in a circular shape.

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