CN220633363U

CN220633363U - Filter element sealing structure

Info

Publication number: CN220633363U
Application number: CN202322022640.XU
Authority: CN
Inventors: 胡效军; 陈志超
Original assignee: HAINING SHUIXIANG WATER PURIFICATION EQUIPMENT CO Ltd
Current assignee: HAINING SHUIXIANG WATER PURIFICATION EQUIPMENT CO Ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-03-22
Anticipated expiration: 2033-07-28

Abstract

The utility model provides a filter core seal structure, includes inner skeleton and moving part, and the moving part structure has the seal groove, is provided with sealing member in the seal groove, and sealing member forms the cooperation with the inner wall of inner skeleton, can form sealedly when moving part and inner skeleton relative motion, its characterized in that: the sealing piece comprises an inner ring part and an outer ring part, the inner ring part is connected with the outer ring part to form a sinking groove, and the outer side surface of the outer ring part is configured to be a first inclined surface. According to the utility model, the first inclined plane is formed on the outer side surface of the sealing element, so that the sealing element is in a V shape with a wide upper part and a narrow lower part, and the sealing element is matched with the sinking groove on the upper side of the sealing element, so that the sealing element has a larger compression range, is less influenced by the sizes of the inner framework and the movable element, and has higher adaptability.

Description

Filter element sealing structure

Technical Field

The utility model relates to the technical field of filters, in particular to a filter element sealing structure.

Background

A back flushing filter, which is a precise device for directly intercepting impurities in water by utilizing a filter screen so as to purify water quality and protect other devices of a system from working normally;

the back flush pre-filter is of an internal pressure type under a normal working state, the pressure of tap water permeates from the inner wall to the outer wall of the filter screen, particulate impurities such as sediment, rust and the like are trapped in the pipe, a flushing valve is opened to flush away the impurities trapped by the filter screen, if the water quality is poor and a consumer does not flush for a long time, a waterway switching piece is operated to the lower part through a back flush switch, the direction of water flow is changed into an external pressure type to be embedded on the surface of the filter element and flush away the impurities which cannot be flushed away in the forward direction, and the impurities are flushed away by the water which is operated in the reverse direction;

in view of the working characteristics of the back flushing prefilter, the waterway switching piece and the inner framework are required to be kept sealed, a certain movable equivalent is required, in the prior art, the waterway switching piece and the inner framework are sealed through O-shaped rings, the compression amount of the O-shaped rings is not easy to control, the whole moving part is blocked and fails easily due to the fact that the compression amount of the O-shaped rings is too large, and the sealing performance is reduced due to the fact that the compression amount is too small, so that a filter element sealing structure is required to be designed according to the situation.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a filter element sealing structure.

The utility model solves the technical problems by adopting the following technical scheme:

the utility model provides a filter core seal structure, includes inner frame and moving part, the moving part is constructed and is provided with the seal groove, be provided with the sealing member in the seal groove, the sealing member with the inner wall of inner frame forms the cooperation, can form sealedly when moving part and inner frame relative motion, the sealing member is including inner circle portion and outer lane portion, inner circle portion meets with outer lane portion in order to form the heavy groove, the lateral surface of outer lane portion constructs to first inclined plane, constructs first inclined plane with the lateral surface of sealing member for the sealing member is wide V type down, cooperates the heavy groove of sealing member upside, makes the sealing member possess great compression range, and the size influence that receives inner frame and moving part is less, and the suitability is higher.

Preferably, the outer ring part is provided with a second inclined plane on one side of the sinking groove, the upper side of the outer ring part is provided with the second inclined plane, and the flanging phenomenon caused by transitional friction between the outer ring part and the inner wall of the inner framework can be effectively prevented when the movable part is reset, so that the stable operation of the whole movable assembly is ensured.

Preferably, the sink is trapezoid, when the sink is washed forward, the sealing element can effectively prevent unfiltered water from flowing through between the movable element and the inner framework, when the sink is washed backward, the outer ring part of the sealing element is in contact with the inner wall of the inner framework, deformation occurs, damping effect is achieved, the movable element can be effectively delayed to reset, and further the backwashing time is prolonged, so that the backwashing effect is better.

The utility model has the advantages and positive effects that:

1. in the utility model, the first inclined plane is formed on the outer side surface of the sealing element, so that the sealing element is in a V shape with a wide upper part and a narrow lower part, and is matched with the sinking groove on the upper side of the sealing element, so that the sealing element has a larger compression range, is less influenced by the sizes of the inner framework and the movable element, and has higher adaptability.

2. In the utility model, the sealing element can effectively prevent unfiltered water from flowing between the movable element and the inner framework during forward flushing, and the outer ring part of the sealing element is contacted with the inner wall of the inner framework during backward flushing to deform, so that the damping effect is realized, the movable element can be effectively delayed to reset, further the backwashing time is prolonged, and the backwashing effect is better.

3. According to the utility model, the upper side of the outer ring part is constructed to be the second inclined plane, so that the phenomenon of excessive flanging caused by transitional friction between the outer ring part and the inner wall of the inner framework when the movable part is reset can be effectively prevented, and the stable operation of the whole movable assembly is ensured.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is an enlarged view of A in the present utility model;

fig. 3 is a cross-sectional view of a seal in accordance with the present utility model.

In the figure: 1. an inner skeleton; 2. a movable member; 21. a movable groove; 3. a seal; 31. an inner ring portion; 32. an outer ring portion; 321. a first inclined surface; 322. a second inclined surface; 33. sinking grooves; 331. and a third inclined plane.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Embodiments of the utility model are described in further detail below with reference to the attached drawing figures:

the utility model provides a filter core seal structure, includes inner skeleton 1 and moving part 2, and moving part 2 is constructed with the seal groove, is provided with sealing member 3 in the seal groove, and sealing member 3 forms the cooperation with the inner wall of inner skeleton 1, can form sealedly when moving part 2 and inner skeleton 1 relative movement, and sealing member 3 is including inner circle portion 31 and outer lane portion 32, and inner circle portion 31 meets with outer lane portion 32 in order to form heavy groove 33, and the lateral surface of outer lane portion 32 is constructed to be first inclined plane 321.

Specifically, as shown in fig. 1, the backflushing type pre-filter comprises an inner framework 1 and a movable part 2, wherein the movable part 2 is generally a piston or a waterway switching part, which are all in the prior art, and are not described herein; the inner framework 1 is internally provided with a cavity, the movable part 2 is partially positioned in the cavity, the periphery of the movable part 2 is provided with a sealing groove, the sealing part 3 is positioned in the sealing groove, and the sealing part 3 can be in contact with the inner wall of the inner framework 1, so that sealing can be realized in the flushing and backwashing processes.

As shown in fig. 2, the sealing member 3 comprises an inner ring portion 31 and an outer ring portion 32, the inner side wall of the inner ring portion 31 is connected with the bottom surface of the sealing groove 21, the lower side of the inner ring portion 31 and the lower side of the outer ring portion 32 are connected, the groove is positioned on the upper side of the sealing member 3, the opening is upward, and a first inclined surface 321 is formed on the outer side surface of the outer ring portion 32 relative to the vertical surface, so that the sealing member 3 is narrowed from top to bottom;

the inclination angle of the first inclined surface 321 relative to the vertical surface is 18-30 degrees, so that the sealing element 3 has a better compression section; in some embodiments, the angle of inclination of the first bevel 321 is 26 °, which is more compatible with the conventional dimensions of filters, and in some embodiments, the angle of inclination of the first bevel 321 may also be 19 °, 20 °, 22 °.

As shown in fig. 2, the groove of the sealing element 3 is arranged in the sealing groove, and a gap is reserved between the upper side surface of the sealing element 3 and the sealing groove, and the gap is between 0.1 mm and 0.5 mm.

The outer ring portion 32 is formed with a second inclined surface 322 on the side of the sink groove 33, and the inclination of the second inclined surface 322 is between 18 and 30 °.

Specifically, as shown in fig. 3, the second inclined plane 322 is located on the upper side surface of the outer ring portion 32, and compared with the horizontal plane, the inclination of the second inclined plane 322 is selected to be 18 °, 19 °, 20 °, 21 °, 22 °, 30 °, and the upper side of the outer ring portion 32 is configured to be the second inclined plane 322, so that excessive flanging caused by transitional friction between the outer ring portion 32 and the inner wall of the inner skeleton 1 when the movable member 2 is reset can be effectively prevented, and stable operation of the whole movable assembly is ensured.

In addition, in the other case, the outer ring portion 32 is formed with a curved surface on the side of the sink 33.

The sinking groove 33 is trapezoid, one side surface of the sinking groove 33 adjacent to the first inclined surface 321 is a third inclined surface 331, the inclination of the third inclined surface 331 is the same as that of the first inclined surface 321, specifically, as shown in fig. 3, the sinking groove 33 is right trapezoid, the upper opening of the sinking groove 33 is larger, and on the vertical section, the third inclined surface 331 of the sinking groove 33 is parallel to the first inclined surface 321.

When the sewage is washed, sewage flows downwards from between the movable part 2 and the inner framework 1 under the action of water pressure, when the sewage flows to the sealing groove, the sewage contacts the sealing part 3, a gap between the sealing part 3 and the sealing groove enters the sinking groove 33, and the outer ring part 32 is outwards spread under the action of the water pressure, so that the sealing part 3 can strengthen sealing;

during back flushing, the movable piece 2 moves downwards, after back flushing is completed, the movable piece 2 resets upwards, at this moment, the outer ring part 32 can slightly form a flanging under the contact with the inner wall of the inner framework 1, a good damping effect is achieved, and then in the process of moving the movable piece 2 upwards, the reset time is delayed, and back flushing is further maintained, so that the back flushing effect is ensured.

It should be emphasized that the examples described herein are illustrative rather than limiting, and therefore the utility model is not limited to the examples described in the detailed description, but rather falls within the scope of the utility model as defined by other embodiments derived from the technical solutions of the utility model by those skilled in the art.

Claims

1. The utility model provides a filter core seal structure, includes inner frame (1) and moving part (2), moving part (2) are constructed and are had the seal groove, be provided with sealing member (3) in the seal groove, sealing member (3) with the inner wall formation cooperation of inner frame (1), can form sealedly when moving part (2) and inner frame (1) relative motion, its characterized in that: the sealing element (3) comprises an inner ring part (31) and an outer ring part (32), the inner ring part (31) is connected with the outer ring part (32) to form a sinking groove (33), and the outer side surface of the outer ring part (32) is configured to be a first inclined surface (321).

2. A cartridge seal arrangement according to claim 1, wherein: the outer ring part (32) is provided with a second inclined surface (322) on one side of the sinking groove (33).

3. A cartridge seal arrangement according to claim 2, wherein: the second incline (322) has an incline of between 18-30 degrees.

4. A cartridge seal arrangement according to claim 1, wherein: the outer ring part (32) is provided with a curved surface on one side of the sinking groove (33).

5. A cartridge seal arrangement according to claim 1, wherein: the first inclined surface (321) has an inclination angle of 18-30 degrees.

6. A cartridge seal arrangement according to claim 5, wherein: the first inclined surface (321) has an inclination angle of 26 degrees.

7. A cartridge seal arrangement according to any one of claims 1-6, wherein: the sinking groove (33) is trapezoid.

8. A cartridge seal arrangement according to claim 7, wherein: a side surface, close to the first inclined surface (321), of the sinking groove (33) is a third inclined surface (331), and the inclination of the third inclined surface (331) is the same as that of the first inclined surface (321).