Novel double-layer filter screen

Abstract

The utility model discloses a novel double-layer filter screen which is mainly composed of a shell, a sealing ring, an upper filter screen, a limiting piece, a lower filter screen, a bottom piece, a through hole nut and a screw rod. A plurality of through holes are formed in the middle of the shell, a groove is formed in the edge of the shell, a sealing ring is arranged in the groove, the shell is hollow, and a secondary edge is arranged below the interior; the edge of the sealing ring is provided with double-layer edges; a through hole is formed in the middle of the upper filter screen; the limiting piece is provided with a plurality of through holes and provided with a boss in the middle. A through hole is formed in the middle of the lower filter screen, and the edge has height and is overlapped and folded; nut nails are arranged in the middle of the bottom sheet, a plurality of through holes are arranged around the bottom sheet, and the edge has height. The utility model overcomes the defects that the filter screen in the prior art is single-layer, the filtering is easy to lose efficacy and the filtering effect is poor; the existing filter screens are complex in structure, are plastic products, and are not resistant to high temperature, not durable, difficult to clean and large in pollution. The utility model provides a novel double-layer filter screen which is simple in structure, good in filtering effect and convenient to replace and clean.

Description

Technical Field

[0001] The utility model relates to a double-layer filter screen, in particular to a novel double-layer filter screen. Background Art

[0002] The well-known filter is a filtering device. The common filter is a single-layer one, which is easy to fail and has a poor filtering effect. There are double-layer filter screens, but they have a complex structure and are made of plastic. They are not resistant to high temperatures, are not durable, are difficult to clean, and cause a lot of pollution. Another filter screen is fixed by welding, but if the filter screen fails or you want to adjust the filtering effect, you need to replace the entire filter, which causes waste. Summary of the invention

[0003] The utility model aims to overcome the deficiencies in the prior art and provide a double-layer filter screen which has a simple structure, is easy to replace and clean, and has a good filtering effect.

[0004] The purpose of the utility model is achieved through the following scheme.

[0005] The utility model discloses a novel double-layer filter screen, comprising a shell, a sealing ring, an upper filter screen, a limiting plate, a lower filter screen, a bottom plate, a through-hole nut and a screw rod.

[0006] There are multiple through holes in the middle of the shell, and a groove is provided on the edge of the shell. A sealing ring is installed in the groove. The inside of the shell is empty, and a secondary edge is provided at the lower part of the inside; a double-layer edge is provided on the edge of the sealing ring; a through hole is provided in the middle of the upper filter, and the edges are overlapped and folded; the limiting plate is provided with multiple through holes and a boss is provided in the middle; a through hole is provided in the middle of the lower filter, the edge is provided with a height, and it is overlapped and folded; a nut nail is provided in the middle of the bottom film, and multiple through holes are provided around it, and a height is provided on the edge.

[0007] A plurality of through holes are arranged in the middle of the shell, and one, two or three grooves are arranged at the edge of the shell.

[0008] The groove of the shell is equipped with a sealing ring.

[0009] The edge of the sealing ring is provided with a double-layer edge which can be double-layer or single-layer.

[0010] The edge of the upper filter screen can be overlapped, folded in half or hemmed.

[0011] The limiting piece is provided with a plurality of through holes and a boss is provided in the middle.

[0012] The edge of the lower filter screen is provided with a height, and can be overlapped, folded in half or hemmed.

[0013] The edge of the bottom sheet is provided with a height, which can be a turned edge or an overlapped pressed edge.

[0014] The beneficial effects of the utility model are:

[0015] 1. Double-layer filter with simple structure, good filtering effect, easy replacement and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of the utility model in the assembled state of the double-layer filter;

[0017] Figure 2 It is a three-dimensional cross-sectional view of the utility model in the assembled state of the double-layer filter;

[0018] Figure 3 It is a three-dimensional diagram of the utility model double-layer filter screen in the disassembly and assembly state;

[0019] Figure 4 It is a three-dimensional cross-sectional view of the double-layer filter screen of the utility model in the disassembly and assembly state.

[0020] Figure 5 It is a three-dimensional cross-sectional view of the double-layer filter screen of the utility model in use. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The novel double-layer filter screen of the utility model comprises a shell 1, a sealing ring 2, an upper filter screen 3, a limiting plate 4, a lower filter screen 5, a bottom plate 6, a screw 8 and a through-hole nut 7. The shell 1 is provided with a plurality of through holes 12 in the middle. The edge of the shell 1 is provided with a groove 11, and the groove 11 is provided with a sealing ring 2. The shell 1 is hollow inside, and a secondary edge 13 is provided at the lower part inside.

[0023] The edge of the sealing ring 2 is provided with a double-layer edge 21 .

[0024] The upper filter screen 3 is provided with a through hole in the middle, and the edges are overlapped and folded in half.

[0025] The limiting plate 4 is provided with a plurality of through holes 42 and a boss 41 in the middle.

[0026] The lower filter screen 5 is provided with a through hole in the middle, has a height at the edge, and is overlapped and folded in half.

[0027] The bottom plate 6 is provided with a nut nail 62 in the middle, a plurality of through holes 61 are provided around it, and a height is provided at the edge.

[0028] The implementation use case is as follows. During installation, the nut nail 62 of the bottom plate 6 passes through the lower filter screen 5, the limit plate 4, the upper filter screen 3 and the shell 1 in sequence. The screw rod 8 is twisted into the through-hole nut 7 to lock the nut nail 62 of the bottom plate 6. The upper filter screen 3 is supported by the upper limit plate 4, and the lower filter screen 5 is pressed by the boss 41 of the limit plate 4. At the same time, the edge of the bottom plate 6 supports the edge of the lower filter screen 5 and is pressed tightly into the secondary edge 13 below the shell 1 to form a tight space. During use, the screw rod 8 is pressed down, and the double-layer edge 21 of the sealing ring 2 is close to the inner wall of the carrier 9. The liquid 10 can only pass through the through hole 61 of the bottom plate 6, the lower filter screen 5, the through hole 42 of the limit plate 4, the upper filter screen 3, and the through hole 12 of the shell 1 in sequence to achieve the filtering effect.

[0029] The specific implementation and use methods described in this article are merely examples of the spirit of the utility model. Those skilled in the art of the utility model may make various modifications or supplements to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

[0030] Although the terms such as shell, seal ring, upper filter screen, limit plate, lower filter screen and bottom plate are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A novel double-layer filter screen, comprising a shell, a sealing ring, an upper filter screen, a stopper, a lower filter screen, a bottom plate, a through-hole nut and a screw, characterized in that: The shell is provided with a plurality of through holes in the middle, a groove is provided at the edge of the shell, a sealing ring is installed in the groove, the shell is empty inside, and a secondary edge is provided at the lower inside; the edge of the sealing ring is provided with a double-layer edge; the upper filter is provided with a through hole in the middle, and the edges are overlapped and folded; the limiting plate is provided with a plurality of through holes, and a boss is provided in the middle; the lower filter is provided with a through hole in the middle, the edges are provided with a height, and are overlapped and folded; a nut is provided in the middle of the bottom film, and a plurality of through holes are provided around it, and a height is provided at the edge.

2. The novel double-layer filter screen according to claim 1 is characterized in that: The shell has a plurality of through holes in the middle thereof and one, two or three grooves at the edge thereof.

3. The novel double-layer filter screen according to claim 1 is characterized in that: The shell has a sealing ring in its groove.

4. The novel double-layer filter screen according to claim 1 is characterized in that: The sealing ring has a double-layer edge on its edge which can be double-layer or single-layer.

5. The novel double-layer filter screen according to claim 1 is characterized in that: The upper filter screen may have an edge which is overlapped, folded in half or hemmed.

6. The novel double-layer filter screen according to claim 1 is characterized in that: The limiting plate is provided with a plurality of through holes and a boss is provided in the middle.

7. The novel double-layer filter screen according to claim 1 is characterized in that: The lower filter screen has an edge with a height, and can be overlapped, folded or hemmed.

8. The novel double-layer filter screen according to claim 1 is characterized in that: The bottom sheet has an edge with a height, which can be a flanging or an overlapping pressed edge.

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