CN204592470U

CN204592470U - The anti-bleeder valve of a kind of self-powering type

Info

Publication number: CN204592470U
Application number: CN201520288492.9U
Authority: CN
Inventors: 王建新; 杨高峰; 周宏韬; 张晓剑; 林晖
Original assignee: Jiangsu Shentong Valve Co Ltd
Current assignee: Jiangsu Shentong Valve Co Ltd
Priority date: 2015-05-07
Filing date: 2015-05-07
Publication date: 2015-08-26
Anticipated expiration: 2025-05-07

Abstract

The anti-bleeder valve of a kind of self-powering type, comprising valve body, the valve rod be placed in through valve gap in valve body, being arranged at valve rod bottom end for opening or the flap of throttle down, and the medium access way at valve body two ends, the middle part of valve body is provided with the dividing plate of hollow, and valve body is divided into A chamber and B chamber by dividing plate, and A chamber and import communicate, B chamber communicates with outlet, dividing plate is provided with upper valve base, and upper valve base and flap are sealed and matched, in A chamber, be provided with cutting device.The beneficial effects of the utility model are: when pipelines from bursting or equipment failure, when causing dielectric leakage, and cutting device can throttle down rapidly, without the need to manual operation.

Description

The anti-bleeder valve of a kind of self-powering type

Art

The utility model relates to valve field, is specifically related to a kind of anti-bleeder valve.

Background technique

Valve plays the effect cut off or regulate in process management systems, it cuts off or regulates and realizes by spanner or drive unit, once there is unexpected explosion or equipment failure in pipe-line system, medium will leak, not only cause a large amount of wastes, if medium be poisonous and harmful, inflammable and explosive time, great harm can be caused to environment or the person, property.

Model utility content

In order to overcome now valvular above-mentioned shortcoming, the utility model provides a kind of anti-bleeder valve of self-powering type with automatic cut-off function.

The utility model solves the technological scheme that its technical problem adopts, the anti-bleeder valve of a kind of self-powering type, comprise valve body, the valve rod in valve body is placed in through valve gap, be arranged at valve rod bottom end for opening or the flap of throttle down, and the medium access way at valve body two ends, the middle part of valve body is provided with the dividing plate of hollow, valve body is divided into A chamber and B chamber by dividing plate, A chamber and import communicate, B chamber communicates with outlet, dividing plate is provided with upper valve base, upper valve base and flap are sealed and matched, cutting device is provided with in A chamber, cutting device comprises valve plug, valve plug is through in the guide holder be arranged on valve body, lower valve base on its top end and dividing plate is sealed and matched, its bottom end has spring seat, plug tip face is non-planar surface, spring seat has spring, spring is fixed in the gland for shutoff valve body lower end mouth, sealed by seal element between spring seat and valve body, guide holder has pilot aperture, the C chamber that guide holder and spring seat are formed is communicated with A chamber by pilot aperture.

Plug tip face is the conical surface.

The beneficial effects of the utility model are: when pipelines from bursting or equipment failure, cause medium release quantitative change large time, valve plug rapid throttle down under the action of the spring, without the need to manual operation; And during valve working, use the sealing pair that flap and upper seal support are formed, and during emergency cut-off, use the sealing pair that valve plug and bottom sealing socket are formed, the difference of sealing pair makes the sealability of valve more reliable, longer service life.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present embodiment;

In figure: 1. valve gap; 2. valve rod; 3. valve body; 4. flap; 5. B chamber; 6. export; 7. plug tip face; 8. A chamber; 9. pilot aperture; 10. seal element; 11. spring seats; 12. springs; 13. glands; 14. C chambeies; 15. imports; 16. dividing plates; 17. upper valve bases; 18. lower valve bases; 19. valve plugs; 20. guide holders.

Embodiment

As shown in Figure 1, the anti-bleeder valve of a kind of self-powering type, comprise valve body 3, the valve rod 2 in valve body 3 is placed in through valve gap 1, be arranged at valve rod 2 bottom end for opening or the flap 4 of throttle down, and the medium access way at valve body 3 two ends, the middle part of valve body 3 is provided with the dividing plate 16 of hollow, valve body is divided into A chamber 8 and B chamber 5 by dividing plate 16, A chamber 8 and import 15 communicate, B chamber 5 communicates with outlet 6, dividing plate 16 is provided with upper valve base 17, upper valve base 17 and flap 4 are sealed and matched, cutting device is provided with in A chamber 8, cutting device comprises valve plug 19, valve plug 19 is through in the guide holder 20 be arranged on valve body, plug tip face 7 is sealed and matched with the lower valve base 18 on dividing plate 16, valve plug bottom end is fixedly connected with spring seat 11, plug tip face 7 is non-planar surface, the conical surface is set in the present embodiment, as long as the top end that other forms can afford the downward component that medium in A chamber 8 applies all can be used for the conical surface form of alternative the present embodiment, namely all within protection scope of the present invention, spring seat 11 has spring 12, spring 12 is fixed in the gland 13 for shutoff valve body lower end mouth, sealed by seal element 10 between spring seat 11 and valve body 3, guide holder 20 has pilot aperture 9, the C chamber 14 that guide holder 20 and spring seat 11 are formed is communicated with A chamber 8 by pilot aperture 9.

During valve opening, spanner or drive unit drive flap 4 to move upward by valve rod, now import 15 place pressure medium enters into A chamber 8, and pressure medium acts on the conical surface in plug tip face 7, and valve plug 19 is subject to downward medium power, overcoming spring force makes valve plug 19 move down, pressure medium enters C chamber by pilot aperture from A chamber simultaneously, acts on spring seat in plane, promotes valve plug and moves downward, thus make medium enter B chamber 5, flow out from outlet 6; After valve opening, if pipelines from bursting or equipment failure after valve, when a large amount of medium is released, the import 15 place pressure drop of valve, A chamber 8 internal pressure diminishes, due to the connection effect of pilot aperture 9, C chamber 14 internal pressure is declined, valve plug 19 under spring force on move, rapid throttle down, realize block fast.

Claims

1. the anti-bleeder valve of self-powering type, comprise valve body, the valve rod in valve body is placed in through valve gap, be arranged at valve rod bottom end for opening or the flap of throttle down, and the medium access way at valve body two ends, the middle part of valve body is provided with the dividing plate of hollow, valve body is divided into A chamber and B chamber by described dividing plate, described A chamber and import communicate, described B chamber communicates with outlet, described dividing plate is provided with upper valve base, described upper valve base and described flap are sealed and matched, it is characterized in that: in described A chamber, be provided with cutting device, described cutting device comprises valve plug, described valve plug is through in the guide holder be arranged on valve body, lower valve base on its top end and dividing plate is sealed and matched, its bottom end has spring seat, described plug tip face is non-planar surface, described spring seat has spring, described spring is fixed in the gland for shutoff valve body lower end mouth, sealed by seal element between described spring seat and valve body, described guide holder has pilot aperture, the C chamber that described guide holder and described spring seat are formed is communicated with A chamber by described pilot aperture.

2. the anti-bleeder valve of self-powering type as claimed in claim 1, is characterized in that: described plug tip face is the conical surface.