Double-layer filter with punching structure

Abstract

The utility model belongs to the field of air filter, concretely is a kind of double filter with punching structure, including frame body, the lower portion of frame body is fixedly connected with inside filter screen and outside filter screen, inside filter screen is located above outside filter screen, the side surface of frame body is slidably connected with two moving plates, two the moving plate is respectively with first adjusting plate and second adjusting plate fixed connection, two The moving plate is slidably connected with adjusting assembly;The utility model is through the structural design of inside filter screen and outside filter screen, by setting inside filter screen and outside filter screen, the aperture of inside filter screen is greater than the aperture of outside filter screen, by this design can realize the air of through dustless interval large particle is filtered on inside filter screen, again by outside filter screen, fine particle is filtered secondary, avoid the problem that ventilation is not smooth due to the too much dust of one layer filtration in practical use.

Description

Technical Field

[0001] This utility model relates to the field of air filters, specifically a double-layer filter with a perforated structure. Background Technology

[0002] An air filter is a device used to filter impurities, pollutants and particles in the air. It is widely used in many fields, including production workshops.

[0003] Current air filters are typically single-layer metal mesh filters. Single-layer filters have low filtration efficiency and the filter pores are prone to clogging. Multi-layer filters are also prone to internal blockage after long-term use. Furthermore, since the filters are usually directly fixed to the ventilation duct with bolts, maintenance becomes troublesome over time, requiring the removal of all screws. Therefore, to address the above problems, a double-layer filter with a perforated structure is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, such as the clogging of internal filters and difficulties in maintenance caused by long-term use, this invention proposes a double-layer filter with a perforated structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a double-layer filter with a perforated structure, including a frame, an inner filter screen and an outer filter screen are fixedly connected to the lower part of the frame, the inner filter screen is located above the outer filter screen, and two movable plates are slidably connected to the side of the frame, the two movable plates are respectively fixedly connected to a first adjusting plate and a second adjusting plate, and both movable plates are slidably connected to an adjusting component.

[0006] Preferably, the adjustment assembly includes a turntable, a threaded rod fixedly connected to the turntable, a sheath threadedly fitted onto the threaded rod, the sheath being fixedly connected to the frame, and a push block rotatably connected to the upper end of the sheath, the push block being slidably fitted onto the moving plate.

[0007] Preferably, the upper side of the push block is provided with an upper inclined surface, and the lower side of the push block is provided with a lower inclined surface.

[0008] Preferably, the movable plate has a guide groove and a limiting groove, the width of the guide groove of the movable plate is greater than the diameter of the threaded rod, and the guide groove of the movable plate is slidably sleeved with the push block.

[0009] Preferably, the frame has a sliding groove and multiple air inlets.

[0010] Preferably, the outer side of the outer filter screen is provided with a wire mesh, which is fixedly connected to the frame.

[0011] Preferably, protective plates are fixedly connected to both sides of the frame, and the protective plates are fixedly connected to the wire mesh and the outer filter screen.

[0012] Preferably, the frame is fixedly connected with corrugated plates between the first adjusting plate and the second adjusting plate.

[0013] Preferably, the pore size of the inner filter screen is larger than that of the outer filter screen.

[0014] Preferably, both the outer and inner filter screens are made of polyester material.

[0015] The advantages of this utility model are: 1. This utility model uses an inner filter screen and an outer filter screen structure design. By setting an inner filter screen and an outer filter screen, the pore size of the inner filter screen is larger than that of the outer filter screen. This design can filter large particles of air passing through the clean room onto the inner filter screen, and then filter fine particles a second time through the outer filter screen. In actual use, this avoids the problem of poor ventilation caused by too much dust in one layer of filtration. 2. In this utility model, after the frame is placed into the ventilation duct, the turntable is rotated. The rotation of the turntable drives the threaded rod to rotate upward along the sheath, and the sheath drives the push block to rotate upward. Since the push block is slidably sleeved in the limiting groove of the moving plate, the push block cannot rotate on its own in the limiting groove. Therefore, the push block is driven to move upward along the groove of the limiting groove, squeezing the moving plate and driving the moving plate to move away from the frame, thereby squeezing the ventilation duct. The turntable of the second adjusting plate is rotated again, which achieves the effect of fixing both sides of the frame. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a double-layer filter with a perforated structure according to the present invention; Figure 2 This is a side sectional view of a double-layer filter with a perforated structure according to the present invention; Figure 3 This is an enlarged structural schematic diagram of point A of this utility model; Figure 4 This is a cross-sectional view of the adjustment component of this utility model.

[0018] In the diagram: 1. Frame; 101. Slide groove; 102. Air inlet; 2. Inner filter screen; 3. First adjusting plate; 4. Second adjusting plate; 5. Protective plate; 6. Outer filter screen; 7. Wire mesh; 8. Adjusting assembly; 801. Turntable; 802. Threaded rod; 803. Protective sleeve; 804. Push block; 8041. Lower inclined surface; 8042. Upper inclined surface; 9. Moving plate; 901. Guide groove; 902. Limiting groove; 10. Corrugated plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail. This application discloses a double-layer filter with a perforated structure. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4 A double-layer filter with a perforated structure includes a frame 1. An inner filter screen 2 and an outer filter screen 6 are fixedly connected to the lower part of the frame 1. The inner filter screen 2 is located above the outer filter screen 6. Two movable plates 9 are slidably connected to the side of the frame 1. The two movable plates 9 are fixedly connected to a first adjusting plate 3 and a second adjusting plate 4, respectively. Both movable plates 9 are slidably connected to an adjusting component 8.

[0021] The inner filter 2 and the outer filter 6 are fixedly connected at the bottom of the frame 1 by stitching. After stitching, glue is applied again along the stitch line. The inner filter 2 is on the inside and the outer filter 6 is on the outside. The front and right sides of the frame 1 are slidably connected to the first adjusting plate 3 and the second adjusting plate 4 by the moving plate 9. After the frame 1 is inserted into the ventilation duct, the first adjusting plate 3 and the second adjusting plate 4 are squeezed to both sides of the ventilation duct by rotating the adjusting component 8. The distance between the first adjusting plate 3 and the second adjusting plate 4 is 0~5mm, which has the effect of fixing the frame 1. Since the extension distance is short, it can be sealed by applying sealant to the gap.

[0022] Reference Figure 3 and Figure 4The adjustment component 8 includes a turntable 801, a threaded rod 802 fixedly connected to the turntable 801, a protective sleeve 803 threadedly connected to the threaded rod 802, the protective sleeve 803 fixedly connected to the frame 1, a push block 804 rotatably connected to the upper end of the protective sleeve 803, the push block 804 slidably connected to the moving plate 9, the upper side of the push block 804 is provided with an upper inclined surface 8042, and the lower side of the push block 804 is provided with a lower inclined surface 8041; After placing the frame 1 into the ventilation duct, rotating the turntable 801 causes the threaded rod 802 to rotate upward along the sheath 803. The sheath 803 then causes the push block 804 to rotate upward. Since the push block 804 is slidably engaged in the limiting groove 902 of the moving plate 9, it cannot rotate on its own within the limiting groove 902. Therefore, the push block 804 moves upward along the groove of the limiting groove 902, pressing the moving plate 9 and causing it to move away from the frame 1, thereby compressing the ventilation duct. The pipe rotates the turntable 801 of the second adjusting plate 4 again, which fixes the two sides of the frame 1. The push block 804 is initially stuck on the lower side of the limiting groove 902. At this time, the straight surfaces on both sides of the push block 804 are just stuck in the vertical groove of the limiting groove 902. This serves to limit the position of the moving plate 9, ensuring that the position of the moving plate 9 extends out of the frame 1 to the shortest extent. When the push block 804 moves, the upper surface of the push block 804 moves along the inclined surface of the limiting groove 902, preventing the push block 804 from rotating.

[0023] Reference Figure 3 and Figure 4 The movable plate 9 has a guide groove 901 and a limiting groove 902. The width of the guide groove 901 of the movable plate 9 is greater than the diameter of the threaded rod 802. The guide groove 901 of the movable plate 9 is slidably sleeved with the push block 804. Reference Figure 1 and Figure 2 The frame 1 has a sliding groove 101 and multiple air inlets 102. The outer side of the outer filter screen 6 is provided with wire mesh 7, which is fixedly connected to the frame 1. The two sides of the frame 1 are fixedly connected with guard plates 5, which are fixedly connected to the wire mesh 7 and the outer filter screen 6. The frame 1 is fixedly connected with corrugated plates 10 between the first adjusting plate 3 and the second adjusting plate 4 respectively. The wire mesh 7 is set on the outside of the outer filter 6 and is fixedly connected to the frame 1 and the protective plate 5. The frame 1 has multiple air inlets 102. The funnel shape of the outer filter 6 and the inner filter 2 and the multiple air inlets 102 increase the filtration area and further enhance the filtration effect.

[0024] Reference Figure 1 and Figure 2The inner filter 2 has a larger pore size than the outer filter 6. Both the outer filter 6 and the inner filter 2 are made of polyester. By setting 2 and 6, the inner filter 2 has a larger pore size than the outer filter 6. This design allows large particles of air passing through the cleanroom to be filtered onto the inner filter 2, and then fine particles are filtered a second time by the outer filter 6. In actual use, this avoids the problem of poor ventilation caused by excessive dust in one layer of filtration.

[0025] Working principle: By setting an inner filter 2 and an outer filter 6, with the pore size of the inner filter 2 being larger than that of the outer filter 6, this design can filter large particles of air passing through the cleanroom onto the inner filter 2, and then filter fine particles a second time through the outer filter 6. In actual use, this avoids the problem of poor ventilation caused by too much dust in one layer of filtration. After placing the frame 1 into the ventilation duct, the turntable 801 is rotated. The rotation of the turntable 801 drives the threaded rod 802 to rotate upward along the sleeve 803. The sleeve 803 drives the push block 804 to rotate upward. Since the push block 804 is slidably engaged in the limiting groove 902 of the moving plate 9, the push block 804 cannot rotate on its own in the limiting groove 902. Therefore, the push block 804 is driven to move upward along the groove of the limiting groove 902, squeezing the moving plate 9 and driving the moving plate 9 to move away from the frame 1, thereby squeezing the ventilation duct. The turntable 801 of the second adjusting plate 4 is rotated again, which achieves the effect of fixing the two sides of the frame 1.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A double-layer filter with a perforated structure, characterized in that: The frame includes a frame (1), with an inner filter screen (2) and an outer filter screen (6) fixedly connected to the bottom of the frame (1). The inner filter screen (2) is located above the outer filter screen (6). Two movable plates (9) are slidably connected to the side of the frame (1). The two movable plates (9) are fixedly connected to a first adjusting plate (3) and a second adjusting plate (4) respectively. Both movable plates (9) are slidably connected to adjusting components (8).

2. The double-layer filter with a perforated structure according to claim 1, characterized in that: The adjustment component (8) includes a turntable (801), which is fixedly connected to a threaded rod (802). The threaded rod (802) is threadedly fitted with a protective sleeve (803). The protective sleeve (803) is fixedly connected to the frame (1). A push block (804) is rotatably connected to the upper end of the protective sleeve (803). The push block (804) is slidably fitted with the moving plate (9).

3. A double-layer filter with a perforated structure according to claim 2, characterized in that: The push block (804) has an upper inclined surface (8042) on its upper side and a lower inclined surface (8041) on its lower side.

4. A double-layer filter with a perforated structure according to claim 3, characterized in that: The movable plate (9) is provided with a guide groove (901) and a limiting groove (902). The width of the guide groove (901) of the movable plate (9) is greater than the diameter of the threaded rod (802). The guide groove (901) of the movable plate (9) is slidably sleeved with the push block (804).

5. A double-layer filter with a perforated structure according to claim 4, characterized in that: The frame (1) has a slide (101) and multiple air inlets (102).

6. A double-layer filter with a perforated structure according to claim 5, characterized in that: The outer filter screen (6) is provided with a wire mesh (7) on its outer side, and the wire mesh (7) is fixedly connected to the frame (1).

7. A double-layer filter with a perforated structure according to claim 5, characterized in that: The frame (1) is fixedly connected to two sides with guard plates (5), and the guard plates (5) are fixedly connected to the wire mesh (7) and the outer filter screen (6).

8. A double-layer filter with a perforated structure according to claim 5, characterized in that: The frame (1) is fixedly connected with a corrugated plate (10) between the first adjusting plate (3) and the second adjusting plate (4).

9. A double-layer filter with a perforated structure according to claim 5, characterized in that: The pore size of the inner filter screen (2) is larger than that of the outer filter screen (6).

10. A double-layer filter with a perforated structure according to claim 5, characterized in that: Both the outer filter screen (6) and the inner filter screen (2) are made of polyester material.

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