CN202432037U

CN202432037U - Stop valve

Info

Publication number: CN202432037U
Application number: CN2011205198595U
Authority: CN
Inventors: 申景拓
Original assignee: SHANGHAI BEFK VALVE CO Ltd
Current assignee: SHANGHAI BEFK VALVE CO Ltd
Priority date: 2011-12-13
Filing date: 2011-12-13
Publication date: 2012-09-12
Anticipated expiration: 2021-12-13

Abstract

The utility model discloses a stop valve which belongs to the technical field of valves. The stop valve comprises a valve body, a valve cap, a valve disc, a valve rod and a hand wheel, wherein the valve body is provided with a sealing surface, the valve disc is arranged in the valve body, the upper end of the valve rod is connected with the hand wheel, and the lower end of the valve rod is movably connected with the valve disc, so that the valve disc can slide up and down at the axial position of the valve rod; the stop valve is characterized in that the valve disc is movably connected with the valve rod by a spring. The stop valve has the beneficial effects of compact structure, good performance, convenient operation, saving the installation space in the line while having the dual function of a stop valve and a check valve, and the production and maintenance cost is reduced.

Description

A kind of stop valve

Technical field

The utility model relates to valve technology field, especially relates to a kind of stop valve.

Background technique

Existing stop valve; By valve body, controlling rod, be fixed in lower valve and the controlled bar control in the valve body and can constitute with the last valve block of lower valve relative movement; Be provided with position-limit mechanism between valve body and the controlling rod; Wherein on upper and lower valve block, all have flow channel, drive during the controlling rod action and go up valve plate movement, make flow channel and connection of the flow channel on the lower valve or dislocation on the valve block; Thereby realize opening or closing of valve, the relative movement between last valve block and the lower valve has rotary and linear type.In the existing common technique; Require on the pipeline stop valve and two types of valves of safety check to be installed respectively, so not only increased cost, and the maintenance expenses of line device by need with the non-return media feature, and operate inconvenient; Take and waste installing space; In a word, the whole control unit relative complex of stop valve and safety check is installed respectively on pipeline in the existing technology, cost of production and maintenance expenses are higher.

The model utility content

The utility model is to provide a kind of stop valve that has stop valve and safety check dual functions simultaneously for solving the problems of the technologies described above.

The technical problem that the utility model solved adopts following technological scheme to realize:

A kind of stop valve; It comprises valve body, valve gap, flap, valve rod and handwheel, and said valve body is provided with sealing surface, and said flap is arranged in the valve body; Said valve rod upper end connects handwheel; The lower end flexibly connects flap, makes flap to move up and down at the axial position of valve rod, and said flap is connected with valve handle activity through spring.

Said flap is provided with pod apertures.

The beneficial effect that the utlity model has is, compact structure, and function admirable, easy to operate, practice thrift the installing space on pipeline, have stop valve and safety check dual functions simultaneously, reduce production and maintenance cost.

Description of drawings

Fig. 1 is the utility model: a kind of cross-sectional view of stop valve;

Fig. 2 is the utility model: a kind of cross-sectional view of flap of stop valve.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.

Shown in seeing figures.1.and.2, a kind of novel cutoff valve structure, it comprises valve body 1, valve gap 2, flap 3, valve rod 4 and handwheel 6; Said valve body 1 is provided with sealing surface 8, and said flap 3 is arranged in the valve body 1, and said valve rod 4 upper ends are fixedly connected handwheel 6 through Stem Mut 9; Valve rod 4 lower ends flexibly connect flap 3; Be with a spring 5 on the said flap 3, and flexibly connect, make flap 3 to move up and down at the axial position of valve rod 4 through this spring 5 and valve rod 4; Also be provided with pod apertures 7 on the said flap 3.

Clockwise rotate handwheel 6 with valve closing, valve rod 4 descends under the drive of Stem Mut 9, with flap 3 roof pressures on the sealing surface on the valve body 1; While valve rod 4 decline extrusion springs 5; Spring 5 deformation apply elastic force on flap 3, play the effect of stop valve by media flow.

Rotate counterclockwise handwheel 6 with valve opening, in MEDIA FLOW under pressure, valve rod 4 the drive of Stem Mut 9 and spring 5 upwards the effect of elastic force rise down, be provided with pod apertures 7 owing to flap 3 simultaneously, make flap 3 under the pressure of medium, can easily open.

When medium counter flow occurring on the pipeline, under the pressure of the elastic force effect of spring 5 and medium, flap 3 is pressed on the sealing surface 8, plays the effect of safety check check medium back flow.

More than show and described basic principle of the utility model and the advantage of major character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. stop valve, it comprises valve body, valve gap, flap, valve rod and handwheel, said valve body is provided with sealing surface; Said flap is arranged in the valve body; Said valve rod upper end connects handwheel, and the lower end flexibly connects flap, makes flap to move up and down at the axial position of valve rod; It is characterized in that said flap is connected with valve handle activity through spring.

2. a kind of stop valve according to claim 1 is characterized in that, said flap is provided with an above pod apertures.