CN210800188U

CN210800188U - Vacuum breaker valve

Info

Publication number: CN210800188U
Application number: CN201921680785.6U
Authority: CN
Inventors: 洪方正
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-06-19
Anticipated expiration: 2029-10-09

Abstract

The utility model relates to a pipe-line system valve structure field, concretely relates to vacuum break valve. The valve comprises a valve body, an upper valve cavity and a lower valve cavity which are arranged in the valve body, wherein a valve seat and a valve clack are movably arranged in the upper valve cavity in a lifting manner, a longitudinal hollow guide seat is fixedly arranged on the valve seat, a guide shaft is sleeved in the guide seat, the upper end of the guide shaft is fixed on a valve cover, the valve cover is arranged at the top of the upper valve cavity, and an air inlet is arranged at the bottom of the upper valve cavity; the valve clack contacts the upper valve cavity to seal the air inlet due to the lifting movement of the valve seat, or is separated from the bottom of the upper valve cavity to enable the upper valve cavity to be communicated with the outside. Through the design, the upper valve cavity body is communicated with the lower valve cavity body and is sealed by the sealing cover, so that the vacuum breaker valve can be prepared in a red stamping and forging mode, the obtained vacuum breaker valve is high in internal structure density, low in rejection rate, free of air holes, long in service life and greatly reduced in production cost and pollution to the environment.

Description

Vacuum breaker valve

Technical Field

The utility model relates to a pipe-line system valve structure field, concretely relates to vacuum break valve.

Background

The vacuum breaker valve can be widely applied to various pipeline 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 other fields, air is timely sucked to protect the pipeline systems when negative pressure is formed in the pipeline, and when the pipeline or a container generates negative pressure or vacuum gradually rises due to running or stopping of the pipeline system, the vacuum breaker valve can be automatically opened to break the vacuum effect, so that the pipeline and other equipment cannot be shriveled or dented, and the like, and the safety of the equipment is protected.

The vacuum breaker valve is asymmetric in structure, so that the preparation process is limited, most vacuum breaker valves can be prepared only by the traditional sand-casting process, and the vacuum breaker valve prepared by the process has air holes, high rejection rate, low density of the internal structure and short service life. Therefore, it is necessary to design a high performance vacuum break valve that can be manufactured by a process such as hot stamping and forging.

SUMMERY OF THE UTILITY MODEL

In view of the technical problem, the utility model provides a vacuum breaker valve, including the valve body, set up upper valve cavity and lower valve cavity in the valve body, the lift activity is provided with disk seat and valve clack in the upper valve cavity, fixed longitudinal hollow guide holder that is provided with on the disk seat, the guide shaft has been cup jointed in the guide holder, the upper end of guide shaft is fixed on the valve bonnet, the valve bonnet sets up at the upper valve cavity top, the upper valve cavity bottom is provided with the air inlet; the valve clack contacts the upper valve cavity to seal the air inlet due to the lifting movement of the valve seat, or is separated from the bottom of the upper valve cavity to enable the upper valve cavity to be communicated with the outside.

As a preferred technical scheme, a connecting piece is arranged on the side edge of the valve body, and comprises a connecting piece cavity and a sealing cover; the connecting piece cavity is respectively connected with the upper valve cavity and the lower valve cavity through the upper connecting port and the lower connecting port.

As a preferable technical scheme, the connecting mode of the connecting piece cavity and the sealing cover is selected from one of threaded connection, bolt and nut connection, pin movable connection, flange connection and socket connection.

As a preferable technical scheme, the connecting mode of the connecting piece cavity and the sealing cover is threaded connection, and a connecting piece gasket is arranged between the connecting piece cavity and the sealing cover.

In a preferred embodiment, the guide seat has a hollow cylindrical structure, and the inner diameter of the hollow cylindrical structure is larger than the outer diameter of the guide shaft.

As a preferable technical scheme, the connection mode of the valve cover and the upper valve cavity is selected from one of threaded connection, bolt and nut connection, pin movable connection, flange connection and socket connection.

As a preferred technical scheme, the connection mode of the valve cover and the upper valve cavity is threaded connection, and a sealing ring is arranged between the valve cover and the upper valve cavity.

As a preferred technical scheme, the valve clack is made of nitrile rubber.

As a preferable technical scheme, the valve body is made of 57-3 brass.

As a preferred technical solution, the size of the valve flap is larger than the size of the air inlet.

The utility model provides a vacuum break valve when the system produces the negative pressure, through the atmospheric pressure with the pressure differential of system pressure be used in on the valve clack, promote disk seat and valve clack, make it break away from valve cavity bottom, open sealed face and to external atmosphere introduction system, let system's pressure rise destroy the negative pressure, it is sealed up to the disk seat and the valve clack tenesmus of vacuum break valve, external atmosphere no longer gets into the system, in system's malleation, working medium gets into the valve cavity, compress tightly the valve clack downwards, system's pressure is big more, the vacuum breaks the valve and drips when guaranteeing the malleation sealed tighter and leakagely. Furthermore, the utility model provides a vacuum destruction valve sets up the connecting piece that has hollow cavity at the valve body side, and get through this connecting piece, make valve cavity and lower valve cavity intercommunication, at last with sealed lid sealed this connecting piece cavity, thereby make vacuum destruction valve can adopt the mode preparation of red punching and forging, the vacuum destruction valve inner structure density that obtains is high, the disability rate is low, avoid appearing the gas pocket, long service life is high, greatly reduced manufacturing cost, still help in the reduction production pollution and destruction to the environment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the vacuum break valve of the present invention.

Fig. 2 is a schematic sectional view of the vacuum break valve according to the present invention.

Fig. 3 is a schematic view of the structure of the connector.

Fig. 4 is a schematic structural view of the vacuum break valve according to the present invention.

1-water inlet, 2-connecting piece cavity, 3-connecting piece gasket, 4-sealing cover, 5-valve flap, 6-valve seat, 7-guide seat, 8-guide shaft, 9-sealing ring, 10-valve cover, 11-upper valve cavity, 12-air inlet, 13-lower valve cavity, 14-valve body, 15-upper connecting port, 16-lower connecting port and 17-connecting piece.

Detailed Description

The technical features of the technical solutions provided in the present invention will be described more clearly and completely with reference to the following detailed description, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

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.

In the present invention, the directions or positional relationships indicated by "upper, lower, top, bottom, side" and the like are the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but not for indication or suggestion that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

The utility model provides a vacuum breaker valve, which comprises a valve body, an upper valve cavity and a lower valve cavity arranged in the valve body, wherein a valve seat and a valve clack are movably arranged in the upper valve cavity in a lifting way, a longitudinal hollow guide seat is fixedly arranged on the valve seat, a guide shaft is sleeved in the guide seat, the upper end of the guide shaft is fixed on a valve cover, the valve cover is arranged at the top of the upper valve cavity, and an air inlet is arranged at the bottom of the upper valve cavity; the valve clack contacts the upper valve cavity to seal the air inlet due to the lifting movement of the valve seat, or is separated from the bottom of the upper valve cavity to enable the upper valve cavity to be communicated with the outside.

Furthermore, a connecting piece is arranged on the side edge of the valve body, and comprises a connecting piece cavity and a sealing cover; the connecting piece cavity is respectively connected with the upper valve cavity and the lower valve cavity through the upper connecting port and the lower connecting port.

Furthermore, the connecting mode of the connecting piece cavity and the sealing cover is selected from one of threaded connection, bolt and nut connection, pin movable connection, flange connection and socket connection.

Furthermore, the connecting piece cavity is in threaded connection with the sealing cover, a connecting piece gasket is arranged between the connecting piece cavity and the sealing cover, the connecting piece gasket is not specially limited in material, and can be made of materials such as nitrile rubber, polyurethane rubber and natural rubber, and the preferred nitrile rubber is selected.

Further, the guide seat has a hollow cylindrical structure, and the inner diameter of the guide seat is larger than the outer diameter of the guide shaft. The utility model provides a setting is on the disk seat the guide holder has hollow cylindrical structure, and its inside guiding axle that has cup jointed the setting on the valve gap, and this guiding axle has solid cylindrical structure, and consequently the internal diameter of guide holder is greater than the external diameter of guiding axle, and the guide holder drives disk seat and valve clack along the guiding axle like this and is elevating movement.

Further, the connection mode of the valve cover and the upper valve cavity is selected from one of threaded connection, bolt and nut connection, pin movable connection, flange connection and socket connection.

Furthermore, the connection mode of the valve cover and the upper valve cavity is threaded connection, a sealing ring is arranged between the valve cover and the upper valve cavity, the material of the sealing ring is not specially limited, the sealing ring can be made of materials such as nitrile rubber, polyurethane rubber and natural rubber, the nitrile rubber is preferred, and the sealing ring can be purchased from the market.

Furthermore, the valve flap is not specially limited in material, and can be made of nitrile rubber, polyurethane rubber, styrene butadiene rubber, natural rubber and the like; preferably nitrile rubber, commercially available.

Further, the valve body is made of 57-3 brass. The 57-3 brass refers to a metal material well known to those skilled in the art, and has a chemical composition: 56.5-58.5 percent of Cu, 0.5 percent of Ni, 0.5 percent of Fe, 2.0-3.0 percent of Pb, the balance of Zn and impurities: 1.2, available from commercial sources.

Further, the size of the valve flap is larger than the size of the air inlet. The utility model discloses in the valve clack has disk dress structure, and the air inlet also has circular cross-section, and in order to avoid the valve clack to follow drop in the air inlet, consequently need guarantee that the size of air inlet is less than the size of valve clack, and this size can indicate diameter between them.

The present invention will be described in detail with reference to the following examples. It is necessary to point out here that the following examples are only used for further illustration of the present invention, and should not be interpreted as limiting the scope of the present invention, and that the skilled person in this field can make some insubstantial modifications and adjustments according to the above-mentioned contents of the present invention, and still fall within the scope of the present invention.

Example 1

Referring to fig. 1 to 4, the embodiment provides a vacuum breaker valve, which includes a valve body 14, and an upper valve cavity 11 and a lower valve cavity 13 disposed in the valve body 14, wherein a valve seat 6 and a valve flap 5 are movably disposed in the upper valve cavity 11 in a lifting manner, a longitudinal hollow guide seat 7 is fixedly disposed on the valve seat 6, a guide shaft 8 is sleeved in the guide seat 7, the upper end of the guide shaft 8 is fixed on a valve cover 10, the valve cover 10 is disposed on the top of the upper valve cavity 11, and an air inlet 12 is disposed at the bottom of the upper valve cavity 11; the valve clack 5 contacts the upper valve cavity 11 due to the lifting movement of the valve seat 6 to seal the air inlet 12, or is separated from the bottom of the upper valve cavity 11 to enable the upper valve cavity 11 to be communicated with the outside. A connecting piece 17 is arranged on the side edge of the valve body, and the connecting piece 17 comprises a connecting piece cavity 2 and a sealing cover 4; the connecting piece cavity 2 is respectively connected with the upper valve cavity 11 and the lower valve cavity 13 through an upper connecting port 15 and a lower connecting port 16; the connecting mode of the connecting piece cavity 2 and the sealing cover 4 is selected from threaded connection, and a connecting piece gasket 3 is arranged between the connecting piece cavity 2 and the sealing cover; the guide seat 7 is of a hollow cylindrical structure, and the inner diameter of the guide seat is larger than the outer diameter of the guide shaft 8; the valve cover 10 and the upper valve cavity 11 are connected in a threaded manner, a sealing ring 9 is arranged between the valve cover and the upper valve cavity, and the valve cover and the upper valve cavity are made of nitrile rubber; the valve clack 5 is made of nitrile rubber; the valve body 14 is made of 57-3 brass; the flap 5 has a disc-like structure so that the inlet 12 also has a circular cross-section, the diameter of the flap 5 being greater than the diameter of the circular cross-section of the inlet 12.

The drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.

For purposes of clarity, the thickness of layers or regions in the figures used to describe embodiments of the present disclosure are exaggerated or reduced, i.e., the figures are not drawn on a true scale.

Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content disclosed above into equivalent embodiments with equivalent changes, but all those skilled in the art do not depart from the technical scope of the present invention, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A vacuum breaker valve is characterized by comprising a valve body, an upper valve cavity and a lower valve cavity, wherein the upper valve cavity and the lower valve cavity are arranged in the valve body; the valve seat and the valve clack are movably arranged in the upper valve cavity in a lifting manner, a longitudinal hollow guide seat is fixedly arranged on the valve seat, a guide shaft is sleeved in the guide seat, the upper end of the guide shaft is fixed on a valve cover, the valve cover is arranged at the top of the upper valve cavity, and an air inlet is arranged at the bottom of the upper valve cavity; the valve clack contacts the upper valve cavity to seal the air inlet due to the lifting movement of the valve seat, or is separated from the bottom of the upper valve cavity to enable the upper valve cavity to be communicated with the outside.

2. The vacuum break valve of claim 1, wherein the valve body is provided with a connector at a side thereof, the connector comprising a connector cavity and a sealing cap; the connecting piece cavity is respectively connected with the upper valve cavity and the lower valve cavity through the upper connecting port and the lower connecting port.

3. The vacuum break valve of claim 2, wherein the connector housing is connected to the sealing cap in a manner selected from the group consisting of a threaded connection, a bolt and nut connection, a pin-and-socket connection, a flanged connection, and a spigot connection.

4. The vacuum break valve of claim 3, wherein the connector housing is threadably engaged with the sealing cap and a connector gasket is disposed between the connector housing and the sealing cap.

5. The vacuum break valve as claimed in claim 1, wherein the guide seat has a hollow cylindrical structure having an inner diameter larger than an outer diameter of the guide shaft.

6. The vacuum break valve of claim 1, wherein the valve cover is attached to the upper valve chamber by a means selected from the group consisting of a threaded connection, a bolt and nut connection, a pin connection, a flange connection, and a socket connection.

7. The vacuum break valve of claim 6, wherein the valve cover is threadably connected to the upper valve chamber and a sealing ring is disposed between the valve cover and the upper valve chamber.

8. The vacuum break valve of claim 1, wherein the valve flap is made of nitrile rubber.

9. The vacuum break valve of claim 1, wherein the valve body is 57-3 brass.

10. The vacuum break valve of claim 1, wherein the flap has a dimension that is greater than a dimension of the air inlet.