CN202561109U

CN202561109U - V-shaped ball valve

Info

Publication number: CN202561109U
Application number: CN2012202599470U
Authority: CN
Inventors: 张伟
Original assignee: YONGJIA TIANTIAN VALVE FACTORY
Current assignee: YONGJIA TIANTIAN VALVE FACTORY
Priority date: 2012-05-22
Filing date: 2012-05-22
Publication date: 2012-11-28
Anticipated expiration: 2022-05-22

Abstract

The utility model relates to a V-shaped ball valve. The V-shaped ball valve comprises a valve body, a ball body, a valve rod and a valve seat, wherein the ball body adopts a V-shaped ball body structure; the upper end of the ball body is fixedly connected with the valve rod; the lower end of the ball body is mounted in a locating hole of the valve body by a fixing shaft; the valve seat is arranged in an outlet channel of the valve body by a cap; the valve seat adopts a floating valve seat structure; a cap flow channel hole cylinder is provided with a cylinder which extends towards the direction of the ball body; the external circle wall of the cylinder is matched with the inner circle wall of the valve seat in a movable sealing manner; an O-shaped sealing ring is arranged between the outer circle wall and the inner circle wall; and a sealing ring is arranged between the outer circle wall of the valve seat and the flow channel hole of the valve body. The V-shaped ball valve, disclosed by the utility model, has the advantages of efficiently preventing a medium from entering into a spring cavity of the floating valve seat, preventing the spring from losing effectiveness, avoiding influence to the floating function of the valve seat and being small in starting and closing torque and reliable in starting and closing work and the like. The V-shaped ball valve, disclosed by the utility model, is suitable to be used under the working conditions of the high-temperature and abrasive mediums in industries such as petroleum and chemical industry.

Description

A kind of V-type ball valve

Technical field

The utility model relates to valve field, specifically about a kind of V-type ball valve.

Background technique

The structure of existing V-type ball valve generally comprises valve body, spheroid, valve rod, valve seat, and spheroid is a V-structure, and the spheroid upper end is fixedly connected with valve rod; The spheroid lower end is installed in the positioning hole of valve body by stationary axle; Valve seat by and cap be installed in the valve outlet passage, be shaped on the sealing surface that cooperatively interacts between valve seat and the spheroid, valve seat with also be provided with spring between the cap; Make valve seat form floating structure, it is dead to prevent that worst hot case spheroid and valve seat from expanding.Its major defect be valve seat and and cap between have the gap, pulverous medium gets into easily and makes spring failure in the spring eye, makes valve seat lose float function, expands extremely at worst hot case lower sphere and valve seat, the valve opening and closing moment of torsion is big, even can't open and close.

Summary of the invention

The purpose of the utility model is the shortcoming that exists to existing technology, provide a kind of open and close torque little, open and close light, reliable V-type ball valve.

The technological scheme of the utility model comprises valve body, spheroid, valve rod, valve seat; Spheroid adopts the V-type sphere structure, and the spheroid upper end is fixedly connected with valve rod, and the spheroid lower end is installed in the positioning hole of valve body by stationary axle; Valve seat by and cap be installed in the valve outlet passage; Valve seat adopts the floating valve seat structure, mainly is that also cap runner hole is shaped on the cylinder that extends to the spheroid direction, and the cylindrical wall of this cylinder cooperates with the inner round wall motive sealing of valve seat; Be provided with the O RunddichtringO between the two, be provided with seal ring between the cylindrical wall of valve seat and the valve flowing channel hole.

The utility model has the advantages that the valve seat inner round wall with and the cylinder of cap between and adopt motive sealing to cooperate respectively between valve seat cylindrical wall and the valve flowing channel hole; Prevent that effectively medium from getting into the spring chamber of floating valve seat; Avoid spring failure to influence the valve seat float function, its open and close torque is little, the keying reliable operation.

Description of drawings

Fig. 1 is the structure sectional view of the utility model.

Embodiment

V-type ball valve as shown in Figure 1 comprises valve body 1, spheroid 3, valve rod 7, valve seat 4, and spheroid 3 adopts the V-type sphere structure; Spheroid 3 upper ends are fixedly connected through key 6 with the lower end of valve rod 7; Spheroid 3 lower ends are installed in by stationary axle 2 in the positioning hole of valve body 1, valve seat 4 by and cap 17 be installed in valve body 1 outlet passage, be shaped on the sealing surface that cooperatively interacts between valve seat 4 and the spheroid 3; Valve seat 4 adopts the floating valve seat structure; Promptly valve seat 4 and and cap 17 between be provided with spring 15, valve seat 4 can be floated at the runner axial direction, prevent that worst hot case spheroid 3 and valve seat 4 from expanding dead.And cap 17 runner holes are shaped on the cylinder that extends to spheroid 3 directions; The cylindrical wall of this cylinder cooperates with the inner round wall motive sealing of valve seat 4; Be provided with O RunddichtringO 16 between the two, be provided with seal ring 5 between the cylindrical wall of valve seat 4 and the valve body 1 runner hole, prevent that medium from getting into the spring chamber of floating valve seat.

Be provided with stuffing seal between valve rod 7 and the valve body 1; This stuffing seal is made up of Packing seat 8, filler 9, Gland 10; Filler 9 is compressed through bolt 14 by Gland 10 and is installed between valve body 1 and the valve rod 7; Gland 10 upper-end surface internal fixation are installed indicator board 11, and these indicator board 11 indication valves " are opened ", the direction of " pass ".Valve rod 7 upper ends are fixedly connected handwheel 13, in Gland 10 upper-end surfaces, are provided with the limiting stopper 12 that cooperatively interacts with handwheel 13, and control handwheel 13 rotates in 90 ° of scopes.The positioning hole of valve body 1 is installed capping 19, between capping 19 and valve body 1, is provided with sealing gasket 18.

Claims

1. a V-type ball valve comprises valve body (1), spheroid (3), valve rod (7), valve seat (4), and spheroid (3) adopts the V-type sphere structure; Spheroid (3) upper end is fixedly connected with valve rod (7); Spheroid (3) lower end is installed in the positioning hole of valve body (1) by stationary axle (2), valve seat (4) by and cap (17) be installed in valve body (1) outlet passage, valve seat (4) adopts the floating valve seat structure; It is characterized in that also cap (17) runner hole is shaped on the cylinder that extends to spheroid (3) direction; The cylindrical wall of this cylinder cooperates with the inner round wall motive sealing of valve seat (4), is provided with O RunddichtringO (16) between the two, is provided with seal ring (5) between the cylindrical wall of valve seat (4) and valve body (1) the runner hole.