CN209959930U

CN209959930U - Vacuum breaker with reliable structure

Info

Publication number: CN209959930U
Application number: CN201920736865.2U
Authority: CN
Inventors: 张伟恒; 赵志城; 洪辉; 张雪峰
Original assignee: SHANGHAI HUATONG VALVE CO Ltd
Current assignee: SHANGHAI HUATONG VALVE CO Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-01-17
Anticipated expiration: 2029-05-22

Abstract

The utility model relates to a vacuum breaker with reliable structure, which belongs to the technical field of vacuum breakers and comprises a valve body, wherein a valve clack movably connected with the valve body is arranged in the valve body, a valve cover connected with the valve body is arranged at the upper end of the valve clack, a guide rod in sliding connection with the valve clack is arranged in the valve clack, a protective cover is fixedly arranged at the upper end of the guide rod, the protective cover is fixedly connected with the valve cover, and a spring is sleeved outside the guide rod; the utility model discloses a set up the spring in the guide arm outside, because the energy that the spring compression produced fully releases and the synthetic effect of atmospheric pressure is on the valve clack, leading-in atmosphere that can be timely fast, reliable playing destroys vacuum balance action, has increased timely and reliable of valve clack action, has improved the reliability of product performance.

Description

Vacuum breaker with reliable structure

Technical Field

The utility model relates to a vacuum breaker technical field specifically is a vacuum breaker of reliable structure.

Background

The vacuum breaker is widely applied to various systems which are easy to generate vacuum, such as fire fighting, swimming pools, green land sprinkling irrigation, water supply and drainage, docks, power plants, metallurgy, shipbuilding and the like, the air is timely sucked to protect the system when the system forms negative pressure, and when the pipeline or the container generates negative pressure or the vacuum is gradually increased due to the running or stopping of the system, the vacuum breaker can be automatically started to break the vacuum effect, so that the pipeline and other equipment cannot be shriveled or dented, and the like, thereby protecting the safety of the equipment.

The basic structure of the vacuum breaker is introduced in the technical specification of application of the vacuum breaker, the current market is mostly in an angle atmosphere structure, the principle of the vacuum breaker is that a valve flap is opened by buoyancy when water is normally pumped, when vacuum is formed in a pipeline, the valve flap falls down by the action of external atmospheric pressure to close a water inlet channel, meanwhile, the atmosphere is led in from an upper air inlet to break the vacuum state to achieve balance, and engineering practice shows that the falling of the valve flap is unreliable or delayed due to the fact that no external force is introduced except the atmospheric pressure because of the falling of the valve flap, so that the function of breaking the vacuum cannot achieve the expected effect.

Disclosure of Invention

An object of the utility model is to provide a reliable vacuum breaker of structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a reliable structure's vacuum breaker, includes the valve body, install the valve clack rather than swing joint in the valve body, the valve gap that links to each other with the valve body is installed to the valve clack upper end, install the guide arm rather than sliding connection in the valve clack, guide arm upper end fixed mounting has the protection casing, protection casing and valve gap fixed connection, the outside cover of guide arm is equipped with the spring.

As a further technical solution of the present invention: and a valve clack sealing ring matched with the valve cover is arranged outside the valve clack.

As a further technical solution of the present invention: the valve cover is characterized in that a valve cover sealing ring is mounted on the outer portion of the valve cover, and the outer portion of the valve cover sealing ring is connected with the inner wall of the valve body.

As the utility model discloses a further technical scheme again: the valve clack is externally provided with a first limit groove matched with the valve clack sealing ring.

As the utility model discloses a further technical scheme again: and a second limiting groove matched with the valve cover sealing ring is formed in the outer part of the valve cover.

Compared with the prior art, the beneficial effects of the utility model are that: through set up the spring in the guide arm outside, because the energy that the spring compression produced fully releases and the synthetic effect of atmospheric pressure is on the valve clack, can be fast timely leading-in atmosphere, reliable playing destroys the vacuum balance effect, has increased timely and reliable of valve clack action, has improved the reliability of product service performance.

Drawings

FIG. 1 is a cross-sectional view of a structurally sound vacuum breaker flap as it descends;

fig. 2 is a cross-sectional view of a structurally sound vacuum breaker flap as it rises.

In the figure: 1-valve body, 2-valve clack, 3-valve clack sealing ring, 4-guide rod, 5-valve cover, 6-valve cover sealing ring, 7-protective cover and 8-spring.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1

The vacuum breaker with reliable structure as shown in fig. 1 and 2 comprises a valve body 1, wherein a valve clack 2 movably connected with the valve body 1 is installed in the valve body 1, and a valve cover 5 connected with the valve body 1 is installed at the upper end of the valve clack 2, namely, the structure of the existing breaker has known connection mode and structure; a guide rod 4 connected with the valve clack 2 in a sliding manner is arranged in the valve clack 2, specifically a sliding chute which is matched with the guide rod 4 is arranged at the center of the upper end of the valve clack 2, so that the valve clack 2 can slide up and down along the guide rod 4, and the valve clack 2 is lifted and opened along the guide rod 4 by virtue of buoyancy during normal water flowing; the upper end of the guide rod 4 is fixedly provided with a protective cover 7, the protective cover 7 is fixedly connected with the valve cover 5, the protective cover 7 is arranged for protection, further, the protective cover 7 is provided with an air inlet hole, external atmosphere can conveniently enter, when a vacuum is formed in the pipeline, the valve clack 2 falls down under the action of the external atmospheric pressure, the water inlet channel is closed, meanwhile, the atmosphere is led in from the air inlet hole at the upper side, the vacuum state is broken, and balance is achieved; the spring 8 is sleeved outside the guide rod 4, and energy generated by compression of the spring 8 is fully released and acts on the valve clack 2 with atmospheric pressure, so that atmosphere can be quickly and timely introduced, a balance effect of breaking vacuum is reliably achieved, and timeliness and reliability of action of the valve clack 2 are improved.

The valve clack 2 externally mounted have with valve gap 5 matched with valve clack sealing washer 3, guarantee the gas tightness in the valve body 1 through setting up valve clack sealing washer 3, preferably use annular rubber seal.

The valve gap 5 externally mounted has valve gap sealing washer 6, valve gap sealing washer 6 outside links to each other with 1 inner wall of valve body, further improves the gas tightness in the valve body 1 through setting up valve gap sealing washer 6, places gas leakage between valve gap 5 and the valve body 1, has guaranteed the stability of product work.

Example 2

The embodiment is further optimized on the basis of embodiment 1, and the valve clack 2 is externally provided with a first limit groove matched with the valve clack sealing ring 3, so that the valve clack sealing ring 3 is convenient to mount and fix; furthermore, in order to conveniently mount and fix the valve cover sealing ring 6, a second limiting groove matched with the valve cover sealing ring 6 is formed in the outer portion of the valve cover 5.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a reliable structure's vacuum breaker, includes valve body (1), install valve clack (2) rather than swing joint in valve body (1), valve gap (5) that link to each other with valve body (1), its characterized in that are installed to valve clack (2) upper end: install guide arm (4) rather than sliding connection in valve clack (2), guide arm (4) upper end fixed mounting has protection casing (7), protection casing (7) and valve gap (5) fixed connection, the outside cover of guide arm (4) is equipped with spring (8).

2. A structurally sound vacuum breaker according to claim 1, further comprising: and a valve clack sealing ring (3) matched with the valve cover (5) is arranged outside the valve clack (2).

3. A structurally sound vacuum breaker according to claim 1 or 2, characterized in that: and a valve cover sealing ring (6) is arranged outside the valve cover (5).

4. A structurally sound vacuum breaker according to claim 2, further comprising: the valve clack (2) outside is seted up with valve clack sealing washer (3) matched with first spacing groove.

5. A structurally sound vacuum breaker according to claim 3, further comprising: and a second limiting groove matched with the valve cover sealing ring (6) is formed in the outer part of the valve cover (5).