CN212016927U

CN212016927U - Telescopic filter element

Info

Publication number: CN212016927U
Application number: CN201922138960.5U
Authority: CN
Inventors: 贾建东; 张虞旭驹; 潘哲
Original assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Current assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-11-27
Anticipated expiration: 2029-12-03

Abstract

The utility model relates to a telescopic filter element, which comprises a hollow filter element body, a hollow filter element top cover, a closed filter element bottom cover and a connecting ring, wherein the connecting ring is arranged at the top of the filter element body; the filter core top cap includes lid and neck, the neck passes the go-between and stretches into the filter core body, sealed the setting between neck and the go-between, the inside wall of go-between is provided with the seal groove, be provided with U type sealing washer in the seal groove, U type sealing washer opening sets up downwards, the maximum width of U type sealing washer is greater than the degree of depth of seal groove. The utility model aims to reach provides a retractable filter core that sealing performance is better.

Description

Telescopic filter element

Technical Field

The utility model relates to a large-traffic filter core, especially a retractable filter core.

Background

In the prior art, a filtering device is required to be used in fluid filtering, and a core component playing a role in filtering in the filtering device is a filter element. The filter element generally comprises a filter element main body, a filter element top cover arranged at the top of the filter element main body and a filter element bottom cover arranged at the bottom of the filter element main body, wherein a filter membrane for filtering is arranged on the filter element main body. The whole filter element is of a hollow cylinder shape, one end of the top cover or the bottom cover is opened, the other end is closed, fluid to be filtered can permeate the filter membrane from the outer surface of the filter element main body to the middle of the filter element body and then flows out (namely flows in and out) from the opened top cover or the opened bottom cover to finish filtering; or the water flows in from the top cover or the bottom cover of the filter element opening, and the permeation filter membrane flows out from the outer surface of the filter element main body (i.e. the water flows in and out), so that the filtration is finished.

In practical applications, the filter element in the filter needs to be replaced periodically, and the filter elements produced by different manufacturers may have different sizes, so that the filter element needs to be customized by a specified manufacturer when being replaced, which is very troublesome. To address this pain spot, the application number is: 201120506463.7 discloses a length-adjustable cylindrical filter cartridge, which is adjustable to suit different conditions. However, the filter element top cover is adjustable, which means that relative sliding is generated between the filter element top cover and the filter element main body part, so that the requirement on the sealing performance at the sliding position is high, and the common sealing mode cannot realize good sealing, so that a telescopic filter element with better sealing performance is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to reach provides a retractable filter core that sealing performance is better.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a telescopic filter element comprises a hollow filter element body, a hollow filter element top cover, a closed filter element bottom cover and a connecting ring, wherein the connecting ring is arranged at the top of the filter element body; the filter core top cap includes lid and neck, the neck passes the go-between and stretches into the filter core body, sealed the setting between neck and the go-between, the inside wall of go-between is provided with the seal groove, be provided with U type sealing washer in the seal groove, U type sealing washer opening sets up downwards, the maximum width of U type sealing washer is greater than the degree of depth of seal groove.

Further, the bottom of the lateral surface laminating seal groove of U type sealing washer, the cell wall of the arc end laminating seal groove of U type sealing washer.

Further, when the opening angle of the U-shaped seal ring is represented as α, the depth of the seal groove is represented as H, and the width is represented as L, the relationship between α and H, L satisfies:

furthermore, the bottom of lid is provided with the spacing ring, the neck can imbed spacing ring department hot melt and connect.

Furthermore, a chamfer is arranged at the position where the neck is embedded into the limit ring.

Further, the hollow inner diameter of the neck part is the same as that of the cover body.

Further, a handle is arranged at the top of the cover body.

Furthermore, the inner diameter of the connecting ring is smaller than that of the filter element body, a limiting flange is further arranged at the bottom of the neck, and the limiting flange is abutted against the connecting ring for limiting when the filter element top cover is stretched to the maximum.

Further, the limiting flange is arranged in a ring shape.

Further, the connection ring includes an upper ring and a lower ring, the upper ring is inserted into the lower ring and forms a sealing groove on an inner surface of the connection ring.

Compared with the prior art, the utility model, the advantage that has lies in: the telescopic filter element in the utility model can be adapted to filter shells with different sizes, thus saving the trouble of customization; meanwhile, the self-sealing effect is certain, and the sealing effect is better and excellent in use; and can also obtain corresponding improvement along with the increase of operating flow or operating pressure, and operating pressure is big more, and sealing performance is better.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic view of the retractable filter element of the present invention;

FIG. 2 is a cross-sectional view of the retractable filter element of the present invention;

fig. 3 is a schematic view of a U-shaped seal ring according to a first embodiment of the present invention;

fig. 4 is a schematic view of a force applied in the first embodiment of the present invention;

fig. 5 is a schematic view of a U-shaped seal ring according to a second embodiment of the present invention;

fig. 6 is a schematic view of the force applied in the second embodiment of the present invention;

fig. 7 is a schematic structural view of the connection ring of the present invention.

In the figure: 1. a filter element body; 2. a filter element top cover; 21. a cover body; 211. carrying a handle; 212. a limiting ring; 22. a neck portion; 221. a flange; 3. a filter element bottom cover; 4. a connecting ring; 41. ring fitting; 42. a lower ring; 5. a sealing groove; 6. u type sealing washer.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Fig. 1 and fig. 2 show a schematic structural diagram and a cross-sectional view of a retractable filter element of the present invention, the filter element generally includes a hollow filter element top cover 2, a connecting ring 4, a hollow filter element body 1 and a closed filter element bottom cover 3 from top to bottom. The filter element top cover 2 is split and comprises a cover body 21 and a neck 22; a handle 211 is arranged at the top of the cover body 21, so that the filter element can be carried by hand and the length of the filter element can be adjusted by stretching the filter element top cover 2; a circle of limiting rings 212 are arranged at the bottom of the cover body 21, and a chamfer is arranged at the top of the neck 22, so that the cover body 21 and the neck 22 can be assembled conveniently. During assembly, the neck 22 is inserted into the position of the limiting ring 212 at the bottom of the cap body 21, and then the cap body is fixed by hot melting. The neck 22 and the cap 21 are both hollow, and the inner diameters of the inner hollows are the same, so that the stability of the fluid during passing is ensured. The connecting ring 4 is arranged at the top of the filter element body 1, and the neck 22 of the filter element top cover 2 penetrates through the connecting ring 4 and extends into the interior of the filter element body 1 to realize the sliding, stretching and shortening effects. Further, in order to ensure the tightness of the filter cartridge, a sealing connection is provided between the connection ring 4 and the neck 22. The specific mode of the sealing connection is that a circle of sealing groove 5 is formed in the inner side wall of the connecting ring 4, namely the side wall abutting against the neck 22, and a U-shaped sealing ring 6 with a downward opening is arranged in the sealing groove 5; meanwhile, the maximum width of the U-shaped sealing ring 6 is larger than the depth of the sealing groove 5. When the U-shaped sealing ring 6 is specifically installed, the outer side surface of the U-shaped sealing ring is abutted against the bottom surface of the sealing groove 5, the arc end of the U-shaped sealing ring 6 is attached to the groove wall of the sealing groove 5, and the inner side surface of the U-shaped sealing ring slightly protrudes out of the sealing groove 5. Thus, when the filter element top cover 2 passes through the connecting ring 4, the neck 22 is contacted with the U-shaped sealing ring 6, and the sealing effect is achieved. Further, the inner diameter of the connecting ring 4 is smaller than that of the filter element body 1, and the bottom of the neck 22 is provided with the flange 221, so that when the filter element top cover 2 is stretched, the flange 221 is blocked at the connecting ring 4, and the whole filter element top cover 2 cannot be pulled out of the filter element body 1, so that the limiting effect is achieved. To increase its structural strength, the flange 221 is provided as a ring-shaped flange 221. In the actual production and manufacturing process, in order to facilitate installation, the connection ring 4 may also be split, and includes two parts, namely, an upper ring 41 and a lower ring 42, which are stacked and spliced, wherein the sealing groove 5 may be separately disposed on an inner sidewall of the upper ring 41 or on an inner sidewall of the lower ring 42, and meanwhile, a plurality of sealing grooves 5 may also be disposed, so as to further increase the sealing effect. As shown in fig. 7, the sealing groove 5 is formed by splicing the upper ring 41 and the lower ring 42 and then jointly formed therebetween, so that the processing and the installation are more convenient, and the inner diameters of the upper ring 41 and the lower ring 42 are set to be the same, thereby ensuring the consistency during installation and improving the overall sealing performance of the connecting ring 4.

Furthermore, relevant parameters of the U-shaped sealing ring 6 and the sealing groove 5 are limited. Let us denote the opening angle of the U-shaped sealing ring 6 as alpha, where the U-shaped sealThe opening angle of the sealing ring 6 specifically refers to an angle formed between the topmost part of the arc end of the U-shaped sealing ring 6 and the rearmost end of the side wall of the U-shaped sealing ring 6. The depth of the seal groove 5 is denoted by H, and the width thereof is denoted by L. In one embodiment of the present disclosure, that is, in an embodiment where the widest part of the side wall of the U-shaped seal ring 6 is the end part of the side wall, the relationship between α and H, L satisfies:

as shown in particular in fig. 3 and 4. It is not difficult to find that the U-shaped seal ring 6 satisfying the above formula condition has a side wall close to the neck 22 protruding from the seal groove 5 after the installation is completed, in the normal use process, because the neck 22 and the U-shaped seal ring 6 are tightly attached to each other, the sealing is realized, when the use pressure is increased to a certain extent, the fluid enters the U-shaped seal ring 6 from the direction a and fills the U-shaped seal ring 6, at this time, the fluid generates three pressures of F1, F2 and F3 on the bottom surface of the U-shaped seal ring 6 and the neck 22, the U-shaped seal ring 6 and the seal groove 5 and the side wall of the U-shaped seal ring 6 and the seal groove 5, a sealing pressure is provided from the inside, and the pressure of the fluid is utilized, so that the sealing effect at the position.

In another embodiment of the present solution, as shown in fig. 5 and 6, the widest part of the U-shaped seal ring 6 is not the end of the side wall. When the pressure rise in use is high, one side wall of the U-shaped sealing ring 6 close to the neck 22 is pushed upwards, the fluid enters the inside of the U-shaped sealing ring 6, three pressures of F1, F2 and F3 are generated on the bottom surfaces of the U-shaped sealing ring 6 and the neck 22, the U-shaped sealing ring 6 and the sealing groove 5 and the side wall of the U-shaped sealing ring 6 and the sealing groove 5 by the fluid, a sealing pressure is provided from the inside, and the pressure of the fluid is utilized, so that the sealing effect at the position is better.

The preferred embodiments of the present invention have been described in detail, but it should be understood that various changes and modifications can be made by those skilled in the art after reading the above teaching of the present invention. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. The utility model provides a retractable filter core, includes hollow filter core body, hollow filter core top cap, confined filter core bottom and go-between, its characterized in that: the connecting ring is arranged at the top of the filter element body, and the filter element top cover is connected to the filter element body in a sliding manner through the connecting ring; the filter core top cap includes lid and neck, the neck passes the go-between and stretches into the filter core body, sealed the setting between neck and the go-between, the inside wall of go-between is provided with the seal groove, be provided with U type sealing washer in the seal groove, U type sealing washer opening sets up downwards, the maximum width of U type sealing washer is greater than the degree of depth of seal groove.

2. The retractable filter element as recited in claim 1, wherein the outer side of the U-shaped sealing ring is attached to the bottom of the sealing groove, and the arc end of the U-shaped sealing ring is attached to the wall of the sealing groove.

3. The retractable filter element as recited in claim 1, wherein the opening angle of the U-shaped sealing ring is represented by α, the depth of the sealing groove is represented by H, and the width is represented by L, then the relationship between α and H, L is satisfied:

4. the retractable filter element as recited in claim 1, wherein the bottom of the cover is provided with a stop collar, and the neck is connected by heat fusion at the position where the stop collar is embedded.

5. The retractable filter cartridge of claim 4, wherein the neck is chamfered where the neck engages the stop collar.

6. The retractable filter cartridge of claim 4, wherein the hollow inner diameter of the neck and the hollow inner diameter of the cap are the same.

7. The retractable filter element as recited in claim 4, wherein a handle is provided at the top of the cover.

8. The retractable filter cartridge of claim 1, wherein the inner diameter of the connection ring is smaller than the inner diameter of the filter cartridge body, and the bottom of the neck is further provided with a limit flange which abuts against the connection ring to limit when the filter cartridge top cover is maximally stretched.

9. The telescoping filter cartridge of claim 8, wherein the stop flange is configured in a ring shape.

10. The telescoping filter cartridge of claim 1, wherein the attachment ring includes an upper ring and a lower ring, the upper ring being inserted into the lower ring and forming a seal groove in an inner surface of the attachment ring.