CN212854857U

CN212854857U - Filter screen for pre-filter

Info

Publication number: CN212854857U
Application number: CN201821752462.9U
Authority: CN
Inventors: 曾维灵
Original assignee: Yuhuan Redsun Valve Co ltd
Current assignee: Yuhuan Redsun Valve Co ltd
Priority date: 2018-10-26
Filing date: 2018-10-26
Publication date: 2021-04-02
Anticipated expiration: 2028-10-26

Abstract

The utility model discloses a filter screen for leading filter relates to filter accessory technical field, and its technical scheme main points are: the upper cover, the cylindrical filter screen and the lower cover are fixedly connected in sequence, and the cylindrical filter screen is made of stainless steel; the cylindrical filter screen comprises a filter part provided with a plurality of filter holes and supporting parts positioned at two ends of the filter part; ribs are formed between the two support parts. The stainless steel material has better corrosion resistance, so that the cylindrical filter screen and the filter screen for the pre-filter are not easy to rust in the using process. And when the pre-filter with the filter screen is used, the filter screen does not need to be frequently replaced, and the service efficiency of the pre-filter is improved to a certain extent.

Description

Filter screen for pre-filter

Technical Field

The utility model relates to a filter accessory technical field, in particular to filter screen for leading filter.

Background

At present, chinese patent with publication number CN201978585U discloses a direct-flushing prefilter, which comprises a valve body, a filter shell and a barrel-shaped filter screen, wherein the valve body is provided with a water inlet, a water outlet and a shell connecting part, the filter shell is connected on the shell connecting part of the valve body, a filter screen mounting part is arranged between the water inlet and the water outlet inside the valve body, the filter screen mounting part is hermetically connected with the filter screen, the water inlet is communicated with the outside of the filter screen, and the water outlet is communicated with the filter screen mounting part. In the use process, water with impurities enters the filter shell from the water inlet, then the water passes through the filter screen and is discharged from the water outlet, and the impurities are blocked between the filter shell and the filter screen by the filter screen.

However, the existing filter screen is generally woven by wire netting, and the filter screen woven by the wire netting is easy to be corroded along with the increase of the service life. When the filter net is rusted, the rusted filter net needs to be replaced in order to ensure that the water filtered by the prefilter does not contain rust. And the replacement of the filter screen in the pre-filter needs more time, and the service efficiency of the pre-filter is greatly reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a filter screen for leading filter, it has difficult emergence corrosion in the use, does not need frequently to carry out the advantage of changing it.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a filter screen for leading filter, fixed upper cover, tube-shape filter screen and the lower cover that links to each other in proper order, the tube-shape filter screen is enclosed by corrosion resistant plate and closes and form, the tube-shape filter screen is including being provided with a plurality of filtration pores the filter house, being located the supporting part at filter house both ends.

Through above-mentioned technical scheme, the tube-shape filter screen is enclosed by corrosion resistant plate and closes and form, and stainless steel material has better corrosion resisting property for this tube-shape filter screen and this for prefilter filter screen are difficult for taking place the corrosion in the use. And when using the leading filter who is equipped with this filter screen, need not frequently change the filter screen, promoted leading filter's availability factor to a certain extent, the supporting part at the both ends department of filter house can support the both ends of filter house for its both ends are difficult for taking place to warp in the use of filter house.

Preferably, a rib is formed between the two support parts.

Through above-mentioned technical scheme, be formed with the rib between two supporting parts, like this at the in-process that uses this filter screen, two supporting parts are difficult for taking place relative displacement, and set up the difficult condition that axial tension or axial compression appear in the filter house between two supporting parts. When axial tension appears in the filtering part, the aperture of the filtering hole arranged on the filtering part is enlarged, so that impurities in water can not be effectively filtered. When axial compression appears in the filter house, the filter pores that are provided with on the filter house disappear because of the extrusion easily, and the filter pore figure on the filter house reduces this moment, and the filter effect of filter house reduces.

Preferably, the upper cover extends into one of the supporting parts, and the outer wall of the upper cover is fixedly connected with the inner wall of the corresponding supporting part; the lower cover extends into the other supporting part, and the outer wall of the lower cover is fixedly connected with the inner wall of the corresponding supporting part.

Through the technical scheme, the upper cover and the lower cover both extend into the corresponding supporting parts and are fixedly connected with the corresponding supporting parts. Therefore, the contact area between the upper cover and the corresponding supporting part is large, and the connection is stable; the contact area of the lower cover and the corresponding supporting part is large, and the connection is stable.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment, which is mainly used for showing an appearance structure of the embodiment;

FIG. 2 is a front view of the embodiment, mainly used for showing the components of the embodiment;

FIG. 3 is a schematic sectional view of the embodiment, which is mainly used to show the connection of the parts in the embodiment;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is an enlarged view of a portion B of fig. 3.

Reference numerals: 1. an upper cover; 2. a cylindrical filter screen; 21. a filtering part; 22. a support portion; 3. a lower cover; 4. and (4) ribs.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A filter screen for a pre-filter, as shown in fig. 1, comprises a cylindrical filter screen 2, and an upper cover 1 and a lower cover 3 disposed at both ends of the cylindrical filter screen 2.

The cylindrical filter screen 2 is formed by enclosing a rectangular stainless steel plate, and two ends of the rectangular stainless steel plate are fixedly connected through spot welding. The stainless steel has better corrosion resistance, so that the cylindrical filter screen 2 is not easy to rust in the using process.

As shown in fig. 2, the cylindrical filter screen 2 includes a cylindrical filter portion 21 having a plurality of filter holes (not shown) and annular support portions 22 distributed at two ends of the filter portion 21. At least one rib 4 is formed between the two support portions 22, and the rib 4 extends axially along the filter portion 21.

As shown in fig. 3 and 4, the upper cover 1 extends into one of the supporting portions 22, the outer wall of the upper cover 1 abuts against the inner wall of the supporting portion 22, and the upper cover 1 is fixedly connected with the corresponding supporting portion 22 by spot welding.

As shown in fig. 3 and 5, the lower cover 3 extends into the other supporting portion 22, the outer wall of the lower cover 3 abuts against the inner wall of the supporting portion 22, and the lower cover 3 is fixedly connected to the corresponding supporting portion 22 by spot welding.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. The utility model provides a filter screen for prefilter, characterized by: fixed upper cover (1), tube-shape filter screen (2) and lower cover (3) that link to each other in proper order, tube-shape filter screen (2) are enclosed by corrosion resistant plate and close and form, tube-shape filter screen (2) are including being provided with filter house (21) of a plurality of filtration pores, being located supporting part (22) at filter house (21) both ends.

2. The filter screen for a pre-filter according to claim 1, wherein: ribs (4) are formed between the two support parts (22).

3. The filter screen for a pre-filter according to claim 1, wherein: the upper cover (1) extends into one supporting part (22), and the outer wall of the upper cover (1) is fixedly connected with the inner wall of the corresponding supporting part (22); the lower cover (3) extends into the other supporting part (22), and the outer wall of the lower cover (3) is fixedly connected with the inner wall of the corresponding supporting part (22).