CN210034428U - Self-suction prevention valve - Google Patents
Self-suction prevention valve Download PDFInfo
- Publication number
- CN210034428U CN210034428U CN201920852695.4U CN201920852695U CN210034428U CN 210034428 U CN210034428 U CN 210034428U CN 201920852695 U CN201920852695 U CN 201920852695U CN 210034428 U CN210034428 U CN 210034428U
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- conical surface
- valve body
- valve
- sealing washer
- case
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Abstract
The utility model relates to a prevent from inhaling technical field, disclose a prevent from inhaling valve door, it includes valve body and case, is equipped with first conical surface on the valve body, be equipped with on the case with first conical surface complex second conical surface, be equipped with the mounting groove on the second conical surface, be equipped with the sealing washer in the mounting groove, when first conical surface and second conical surface are hugged closely, the sealing washer is hugged closely with first conical surface. The utility model discloses a when case and valve body are hugged closely, first conical surface on sealing washer and the valve body is hugged closely, when case and the valve body separation, because the cross sectional area of valve body and the cross sectional area of case all diminish gradually, first conical surface and second conical surface part and have the annular gap between the two, the fluid flows from this annular gap, fluidic pressure reduces gradually, because the suction that the venturi effect produced reduces than prior art, the sealing washer can not be taken away by fluid absorption, thereby this prevents from inhaling the life increase of valve.
Description
Technical Field
The utility model relates to a prevent from inhaling technical field, especially relate to a prevent from inhaling valve.
Background
In order to ensure that the valve has good sealing performance in a closed state, a sealing ring is generally arranged on the cross section of the end part of the valve core, the existing sealing ring has various forms, for example, the cross section of the sealing ring is trapezoidal, L-shaped and the like, but when the sealing ring additionally arranged in the valve meets the situation that the cross section in the valve body is suddenly small, the pressure of fluid is suddenly changed due to the Venturi effect, most of the sealing ring can be sucked out or even damaged under the action of differential pressure, and therefore the service life of the valve is shortened.
SUMMERY OF THE UTILITY MODEL
Based on above, the utility model aims to provide a prevent from inhaling valve has solved prior art and has made the sealing washer on the case destroyed because the venturi effect to shorten the life's of valve problem.
In order to achieve the purpose, the utility model adopts the following technical proposal:
the valve body is provided with a first conical surface, the valve core is provided with a second conical surface matched with the first conical surface, the second conical surface is provided with a mounting groove, a sealing ring is arranged in the mounting groove, and when the first conical surface and the second conical surface are tightly attached, the sealing ring can be tightly attached to the first conical surface.
As a preferable scheme of the self-priming prevention valve, the cross section of the sealing ring is circular, and at least half of the cross section of the sealing ring is positioned in the mounting groove.
As a preferred scheme of the self-suction prevention valve, the sealing ring is a nitrile rubber sealing ring.
As a preferred scheme of the self-suction prevention valve, the sealing ring is a silicon rubber sealing ring.
As a preferable scheme of the self-suction prevention valve, an included angle between the first conical surface and the central axis of the valve body is 15-45 degrees.
The utility model has the advantages that: the utility model discloses first conical surface and second conical surface have been add, when the case was hugged closely with the valve body, the sealing washer was hugged closely with first conical surface on the valve body, make the leakproofness of valve better, when case and valve body separate, because the cross sectional area of valve body and the cross sectional area of case all diminish gradually, first conical surface and second conical surface part and there is the annular gap between the two, the fluid flows from this annular gap, fluidic pressure reduces gradually, because the suction that the venturi effect produced reduces than prior art, the sealing washer can not be taken away by fluid absorption, thereby this life who prevents from inhaling the valve increases.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic view of a self-priming prevention valve according to an embodiment of the present invention in a closed state;
fig. 2 is a schematic view of the self-priming prevention valve according to the embodiment of the present invention in an open state.
In the figure:
1-valve body, 11-first conical surface, 2-valve core, 21-second conical surface and 3-sealing ring.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides an anti-self-priming valve, as shown in fig. 1 and fig. 2, including a valve body 1 and a valve core 2, the valve body 1 is provided with a first tapered surface 11, and the valve core 2 is provided with a second tapered surface 21 matched with the first tapered surface 11, that is, an included angle between the first tapered surface 11 and a central axis of the valve body 1 is equal to an included angle between the second tapered surface 21 and a central axis of the valve body 1, so as to ensure that the first tapered surface 11 can be tightly attached to the second tapered surface 21 when the valve is closed. The second conical surface 21 is provided with a mounting groove, a sealing ring 3 is arranged in the mounting groove, and when the first conical surface 11 is tightly attached to the second conical surface 21, the sealing ring 3 can be tightly attached to the first conical surface 11.
The included angle between the first tapered surface 11 and the central axis of the valve body 1 is 15 °, and of course, the included angle between the first tapered surface 11 and the central axis of the valve body 1 is not limited to 15 ° in this embodiment, and may be any value between 15 ° and 45 ° except 15 °.
In this embodiment, the first tapered surface 11 and the second tapered surface 21 are additionally provided, and when the valve core 2 is tightly attached to the valve body 1, the sealing ring 3 is tightly attached to the first tapered surface 11 on the valve body 1, so that the sealing performance of the valve is better. When the valve core 2 is separated from the valve body 1, as shown in fig. 2, because the cross-sectional area of the valve body 1 and the cross-sectional area of the valve core 2 both gradually decrease, the first tapered surface 11 and the second tapered surface 21 are separated and an annular gap exists between the two, fluid flows out from the annular gap, the flow direction of the fluid is shown by an arrow in fig. 2, the pressure of the fluid gradually decreases, the suction force generated by the venturi effect is reduced compared with the prior art, the sealing ring 3 cannot be adsorbed and taken away by the fluid, and therefore the service life of the self-priming prevention valve is prolonged.
The sealing washer 3 of this embodiment is nitrile rubber sealing washer, of course, the utility model discloses a sealing washer 3 is not limited to the nitrile rubber sealing washer of this embodiment, can also be hydrogenation nitrile rubber sealing washer, silicon rubber sealing washer or by the elastic sealing washer 3 of having of other materials make, specifically select according to actual need. The cross section of this embodiment sealing washer 3 is circular, and more than half of the cross section of sealing washer 3 is located the mounting groove to guarantee that this sealing washer 3 can be firm to install in the mounting groove.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (5)
1. The utility model provides an prevent from inhaling valve, its characterized in that, includes valve body (1) and case (2), be equipped with first conical surface (11) on valve body (1), be equipped with on case (2) with first conical surface (11) complex second conical surface (21), be equipped with the mounting groove on second conical surface (21), be equipped with sealing washer (3) in the mounting groove, first conical surface (11) with when second conical surface (21) are hugged closely, sealing washer (3) can with first conical surface (11) are hugged closely.
2. Valve according to claim 1, characterized in that the cross section of the sealing ring (3) is circular and at least half of the cross section of the sealing ring (3) is located in the mounting groove.
3. The anti-self-priming valve according to claim 1, characterized in that the sealing ring (3) is a nitrile rubber sealing ring.
4. The anti-self-priming valve according to claim 1, characterized in that the sealing ring (3) is a silicone rubber sealing ring.
5. Valve according to claim 1, characterized in that the angle of the first conical surface (11) with the central axis of the valve body (1) is 15 ° to 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852695.4U CN210034428U (en) | 2019-06-06 | 2019-06-06 | Self-suction prevention valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920852695.4U CN210034428U (en) | 2019-06-06 | 2019-06-06 | Self-suction prevention valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210034428U true CN210034428U (en) | 2020-02-07 |
Family
ID=69346988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920852695.4U Active CN210034428U (en) | 2019-06-06 | 2019-06-06 | Self-suction prevention valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210034428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352729A (en) * | 2020-10-12 | 2022-04-15 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
-
2019
- 2019-06-06 CN CN201920852695.4U patent/CN210034428U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352729A (en) * | 2020-10-12 | 2022-04-15 | 浙江盾安人工环境股份有限公司 | Flow regulating valve |
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