CN215445188U - Valve for preventing counter flow - Google Patents
Valve for preventing counter flow Download PDFInfo
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- CN215445188U CN215445188U CN202122049342.0U CN202122049342U CN215445188U CN 215445188 U CN215445188 U CN 215445188U CN 202122049342 U CN202122049342 U CN 202122049342U CN 215445188 U CN215445188 U CN 215445188U
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- sealing ring
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- supporting
- fixing sleeve
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Abstract
The application discloses a valve for preventing counter flow, wherein a convex sealing ring and a supporting seat are connected to the inner wall of an outer fixing sleeve, a valve plate is positioned between the convex sealing ring and the supporting seat and is connected to the supporting seat through an elastic part, the elastic part is in a compression state and presses the valve plate to the convex sealing ring, the outer fixing sleeve is connected to a valve inlet or a valve outlet in a flange mode, and the outer fixing sleeve is in sealing fit with the inner wall of a valve main body; according to the valve for preventing backflow, the backflow valve assembly is integrally arranged on the valve main body in a flange mode, so that the mounting difficulty of the backflow valve assembly is reduced; the counter flow valve assembly is independent of the valve body, so that the difficulty of processing and maintenance is reduced, and the reliability of the counter flow valve assembly is high.
Description
Technical Field
The utility model relates to the field of valve structures, in particular to a valve capable of preventing backflow.
Background
One-way or check valves are typically used to prevent reverse flow in the tubing. The mechanical check valve or check valve having an elastic member is superior in reliability and sealing property. However, the machining and installation of the mechanical check valve or check valve into the pipeline are inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a valve for preventing reverse flow, aiming at solving the problem that a one-way valve is inconvenient to install in a pipeline system.
In order to achieve the above object, the present invention provides a valve for preventing reverse flow, comprising:
the valve body is provided with a valve inlet and a valve outlet at two ends in the length direction respectively, and the flow direction of the valve for preventing counter flow is from the valve inlet to the valve outlet;
the valve component against current, including outer fixed cover, supporting seat, protrusion sealing ring, elastic component and valve plate, the protrusion sealing ring with the supporting seat connect in the inner wall of outer fixed cover, the valve plate is located the protrusion sealing ring with between the supporting seat and through the elastic component connect in the supporting seat, the elastic component is in compression state will the valve plate presses to the protrusion sealing ring, outer fixed cover through the mode of flange connect in the valve import or the valve export, outer fixed cover with the inner wall of valve main part forms sealed cooperation, wherein, the protrusion sealing ring with the supporting seat is followed flow direction in the valve against the current is arranged in order.
Further, an interference size fit is formed between the outer wall of the outer sleeve and the inner wall of the valve body.
Further, the outer diameter of the outer fixing sleeve is tapered in the length direction, wherein the tapered outer diameter is directed from the protruding sealing ring to the support seat.
Further, the device also comprises a sealing sleeve;
the sealing sleeve is arranged between the outer wall of the outer fixing sleeve and the inner wall of the valve main body and is made of high polymer materials.
Further, the supporting seat includes interconnect's support card and support column, support the card connect in the inner wall of outer fixed cover, the elastic component is coil spring, the coil spring cover is located the support column, the support column is close to the one end of valve plate with valve plate fixed connection, the other end of support column with support card swing joint.
Further, the protruding sealing ring is provided with an external thread structure, the outer fixing sleeve is provided with an internal thread structure, and the protruding sealing ring is in threaded connection with the outer fixing sleeve.
According to the valve for preventing backflow, the backflow valve assembly is integrally arranged on the valve main body in a flange mode, so that the mounting difficulty of the backflow valve assembly is reduced; the counter flow valve assembly is independent of the valve body, so that the difficulty of processing and maintenance is reduced, and the reliability of the counter flow valve assembly is high.
Drawings
FIG. 1 is a cross-sectional view of a valve for preventing reverse flow according to one embodiment of the present invention;
fig. 2 is a sectional view of a valve assembly for preventing reverse flow in a valve according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the content clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1-2, in one embodiment of the present invention, a valve for preventing reverse flow includes:
a valve body 100 having a valve inlet and a valve outlet 120 at both ends in a length direction thereof, respectively, wherein a flow direction of the valve for preventing reverse flow is directed from the valve inlet to the valve outlet 120;
the valve assembly 200 comprises an outer fixing sleeve 210, a support seat, a protruding sealing ring 230, an elastic member 240 and a valve plate 250, wherein the protruding sealing ring 230 and the support seat are connected to the inner wall of the outer fixing sleeve 210, the valve plate 250 is positioned between the protruding sealing ring 230 and the support seat and is connected to the support seat through the elastic member 240, the elastic member 240 presses the valve plate 250 to the protruding sealing ring 230 in a compression state, the outer fixing sleeve 210 is connected to the valve inlet or the valve outlet 120 through a flange, the outer fixing sleeve 210 forms a sealing fit with the inner wall of the valve main body 100, and the protruding sealing ring 230 and the support seat are sequentially arranged along the flow direction in the valve for preventing reverse flow.
Various types of valve opening and closing structures, such as a ball valve or a shut-off valve, may be integrated into the valve body 100. In the present embodiment, the reverse flow valve assembly 200 is mounted to the valve inlet as an example. The reverse flow valve assembly 200 is integrally formed as a sleeve-shaped structure and is connected to the valve inlet in a flange manner, a connecting flange is disposed at the valve inlet, and at this time, the outer fixing sleeve 210 includes a cylinder portion and a flange portion which are connected to each other, the flange portion and the connecting flange form a fixing, and the cylinder portion is matched with the valve inlet. The supporting base serves as a fixing base for the valve plate 250, and the valve plate 250 is connected to the supporting base through the elastic member 240, and the above-mentioned connection manner may be a butting connection or a hanging connection. The supporting base and the outer fixing sleeve 210 can be an integrally formed structure or a split structure. The protruding sealing ring 230 and the outer fixing sleeve 210 may be formed as an integral structure or as separate structures. When there is fluid flowing from the valve inlet to the valve outlet 120 in the valve for preventing reverse flow, the valve plate 250 is impacted to the support seat direction against the action of the elastic member 240, so that the valve plate 250 is separated from the protruding sealing ring 230, and the valve is conducted at this time; when there is fluid flowing from valve outlet 120 to the valve inlet of the valve for preventing reverse flow, valve plate 250 is impacted toward protruding sealing ring 230, and elastic member 240 also presses valve plate 250 against protruding sealing ring 230, so that valve plate 250 forms a seal with protruding sealing ring 230, and the valve is closed. In this embodiment, the elastic element 240 is a coil spring, the supporting base includes a supporting clip 221 and a supporting post 222, the supporting clip 221 is connected to the inner wall of the outer fixing sleeve 210 by clipping or welding, and the coil spring is sleeved on the supporting post 222 and located between the valve plate 250 and the supporting clip 221. To sum up, the reverse flow valve assembly 200 is mounted to the valve body 100 as a whole in a flange manner, thereby reducing the mounting difficulty of the reverse flow valve assembly 200; of course, the reverse flow valve assembly 200 is independent of the valve body 100 thereby reducing the difficulty of machining and maintenance.
In one embodiment, an interference dimensional fit is formed between the outer wall of the outer sleeve 210 and the inner wall of the valve body 100.
The interference fit is utilized to realize a high-quality sealing effect between the outer fixing sleeve 210 and the valve main body 100, and the sealing effect can be realized through size design without improving the overall processing difficulty.
In one embodiment, the outer diameter of the outer sleeve 210 tapers along its length, wherein the taper is directed from the protruding seal ring 230 to the support seat.
The outer sleeve 210 has a tapered outer diameter, so that the difficulty of alignment between the two is reduced during the installation of the backflow valve assembly 200 on the valve body 100, and the sealing effect is also facilitated.
In one embodiment, the device further comprises a sealing sleeve;
the sealing sleeve is arranged between the outer wall of the outer fixing sleeve 210 and the inner wall of the valve main body 100, and the sealing sleeve is made of high polymer materials.
The sealing effect between the two can be improved through the sealing sleeve, and the connection mode between the outer fixing sleeve 210 and the valve main body 100 is changed from hard contact to soft contact, so that the damage of the two is not easy to occur, and the sealing sleeve is convenient to replace.
In one embodiment, the supporting base includes a supporting clip 221 and a supporting post 222 that are connected to each other, the supporting clip 221 is connected to an inner wall of the outer fixing sleeve 210, the elastic member 240 is a coil spring, the coil spring is sleeved on the supporting post 222, one end of the supporting post 222 close to the valve plate 250 is fixedly connected to the valve plate 250, and the other end of the supporting post 222 is movably connected to the supporting clip 221.
In this embodiment, the supporting card 221 has a through hole in the middle, and the supporting column 222 is disposed through the through hole. The structure of the supporting seat has the characteristics of simplicity and practicability. The support clip 221 may be attached to the inner wall of the outer fixing sleeve 210 by welding or clipping. When the fluid in the valve flows in the positive direction, the valve plate 250 overcomes the coil spring to drive the support columns 222 to move towards the support card 221; the valve plate 250 is coupled to the protruding sealing ring 230 by the coil spring when there is a reverse flow of fluid or no flow of fluid in the valve.
In one embodiment, the raised sealing ring 230 has an external thread structure, the outer fixture sleeve 210 has an internal thread structure, and the raised sealing ring 230 is in threaded connection with the outer fixture sleeve 210.
The protruding sealing ring 230 is easily removed from the outer fixing sleeve 210, and certainly, the valve plate 250 and the elastic member 240 are easily installed and replaced, thereby facilitating the use of the entire reverse flow valve assembly 200.
In summary, in the valve for preventing reverse flow according to the present invention, the reverse flow valve assembly 200 is integrally mounted on the valve main body 100 in a flange manner, so that the mounting difficulty of the reverse flow valve assembly 200 is reduced; the counter flow valve assembly 200 is independent of the valve body 100, reducing the difficulty of machining and maintenance, while the reliability of the counter flow valve assembly 200 is high.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A valve for preventing reverse flow, comprising:
the valve body is provided with a valve inlet and a valve outlet at two ends in the length direction respectively, and the flow direction of the valve for preventing counter flow is from the valve inlet to the valve outlet;
the valve component against current, including outer fixed cover, supporting seat, protrusion sealing ring, elastic component and valve plate, the protrusion sealing ring with the supporting seat connect in the inner wall of outer fixed cover, the valve plate is located the protrusion sealing ring with between the supporting seat and through the elastic component connect in the supporting seat, the elastic component is in compression state will the valve plate presses to the protrusion sealing ring, outer fixed cover through the mode of flange connect in the valve import or the valve export, outer fixed cover with the inner wall of valve main part forms sealed cooperation, wherein, the protrusion sealing ring with the supporting seat is followed flow direction in the valve against the current is arranged in order.
2. The backflow prevention valve of claim 1, wherein an interference dimensional fit is formed between an outer wall of said outer sleeve and an inner wall of said valve body.
3. The backflow prevention valve as in claim 2, wherein the outer diameter of said outer sleeve is tapered along its length, wherein the direction of the outer diameter taper is from said protruding sealing ring to said support seat.
4. The valve of claim 1, further comprising a sealing sleeve;
the sealing sleeve is arranged between the outer wall of the outer fixing sleeve and the inner wall of the valve main body and is made of high polymer materials.
5. The valve as claimed in any one of claims 1 to 4, wherein the supporting base comprises a supporting clip and a supporting post connected to each other, the supporting clip is connected to an inner wall of the outer fixing sleeve, the elastic member is a coil spring, the coil spring is sleeved on the supporting post, one end of the supporting post close to the valve plate is fixedly connected to the valve plate, and the other end of the supporting post is movably connected to the supporting clip.
6. The valve as claimed in any one of claims 1 to 4, wherein the male sealing ring has an external thread structure, the outer fixing sleeve has an internal thread structure, and the male sealing ring is threadedly connected with the outer fixing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122049342.0U CN215445188U (en) | 2021-08-28 | 2021-08-28 | Valve for preventing counter flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122049342.0U CN215445188U (en) | 2021-08-28 | 2021-08-28 | Valve for preventing counter flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215445188U true CN215445188U (en) | 2022-01-07 |
Family
ID=79696959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122049342.0U Active CN215445188U (en) | 2021-08-28 | 2021-08-28 | Valve for preventing counter flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215445188U (en) |
-
2021
- 2021-08-28 CN CN202122049342.0U patent/CN215445188U/en active Active
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