CN2823715Y

CN2823715Y - Bellows ball valve

Info

Publication number: CN2823715Y
Application number: CN 200520075704
Authority: CN
Inventors: 杨连成
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-19
Filing date: 2005-09-19
Publication date: 2006-10-04
Anticipated expiration: 2015-09-19

Abstract

The utility model relates to a ball valve of a corrugated pipe, which comprises a valve cover, a valve body, a valve rod and a ball body, wherein the valve rod which is movably matched with the valve cover is in transmission connection with the ball body; a corrugated pipe which is fixedly in sealing connection with the valve cover is sheathed on the valve rod which does an axial rectilinear motion, and the corrugated pipe and the valve rod are in fixed sealing matching; a spiral shaft guiding groove is arranged on the valve rod; a guiding pin is fixedly arranged on a valve handle which is in transmission connection with the ball body, and is arranged in the spiral shaft guiding groove; the valve rod which does the axial rectilinear motion drives the ball body to rotate by the valve handle. The utility model has the advantages that because the valve rod and the valve cover only do the axial rectilinear motion and the spiral shaft guiding groove is arranged on the valve rod to be in transmission connection with the guiding pin on the valve handle to causes the ball body to rotate to realize the opening and the closing actions, the utility model can use the fixed connection of the corrugated pipe and the valve cover to realize the sealing between the valve rod and the valve cover, and the moveable sealing of the prior art is changed into the static seal. Thus, the utility model has the advantages of good sealing reliability.

Description

Bellows ball valve

Technical field:

The utility model relates to a kind of valve, relates in particular to a kind of ball valve.

Background technique:

As everyone knows, ball valve is a kind of valve commonly used, generally comprises valve body, valve rod, open-shut device, valve gap etc., and open-shut device is a spheroid, and rotating around the valve body center with spheroid reaches the purpose of opening and closing.Ball valve mainly cuts off on pipeline, and throttling distributes and changes the media flow direction and uses.Can produce relative movement between valve rod and the valve gap, be sealed into motive sealing between them, promptly produce and leak the duct, and the space is filled by modes such as pressurizations with filler herein, prevent that medium from leaking in their intersection of relative movement.This by packing compress, be out of shape the shortcoming that there is poor reliability in the anti-leaking method that stops up the space, i.e. the leakproof time is not lasting, must periodical repair could not leak temporary transient assurance a period of time.

Summary of the invention:

The purpose of this utility model is to overcome the deficiencies in the prior art, and the good bellows ball valve of sealing reliability between a kind of valve rod and the valve gap is provided.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: bellows ball valve, comprise valve gap, valve body, valve rod and spheroid, be in transmission connection with movable valve rod and the spheroid that cooperates of valve gap, doing to be arranged with the bellows that fixes and be tightly connected with valve gap on the valve rod of axial linear movement, bellows and valve rod also fix and are sealed and matched, valve rod is provided with spiral guide shaft groove, be installed with guide finger on the plug handle that is in transmission connection with spheroid, guide finger places spiral guide shaft groove, makes the valve rod of axial linear movement drive the spheroid rotation by valve handle.

The beneficial effects of the utility model: owing between valve rod and valve gap, only make axial linear movement, and be in transmission connection with the guide finger of plug on the handle and make the spheroid rotation and realize switching motion being provided with spiral guide shaft groove on the valve rod, so, the utility model can adopt bellows to fixedly connected with valve gap and valve rod and realize sealing between valve rod and the valve gap, it is static seal that realization has the motive sealing of technology, thereby has the good advantage of sealing reliability.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Embodiment:

Below in conjunction with the drawings and specific embodiments the utility model is further described:

As shown in the figure, bellows ball valve, comprise valve gap 5, valve body 11, valve rod 2 and spheroid 10, be in transmission connection with spheroid 10 with the valve gap 5 movable valve rods that cooperate 2, on the valve rod 2 of making axial linear movement, be arranged with the bellows 6 that fixes and be tightly connected with valve gap 5, bellows 6 also fixes with valve rod 2 and is sealed and matched, valve rod 2 is provided with spiral guide shaft groove, be installed with guide finger 8 on the valve handle 9 that is in transmission connection with spheroid 10, guide finger 8 places spiral guide shaft groove, makes the valve rod 2 of axial linear movement drive spheroid 10 rotations by valve handle 9.Described valve rod 2 is provided with line channel, is provided with directional bond 4 with the fixedly connected rack tube 7 of valve gap 5 and line channel is axially movable cooperates, and also is arranged with the Stem Mut 3 that radially flexibly connects axial restraint on valve rod 2.

Its working procedure is as follows: rotation hand wheel 1 drives Stem Mut 3 then does not move, make valve rod 2 produce axially straight line motion up and down, because directional bond 4 is packed in the line channel of valve rod 2, so valve rod 2 can not produce the circumference transposition, can only move up and down, at this moment guide finger 8 inserts in the guide shaft groove of valve rod 2 simultaneously, makes circular movement so guide finger 8 drives valve handle 9 along Hand of spiral, valve handle 9 drives spheroid 10 again and has finished 90 ° and rotatablely move, and has realized the keying function of ball valve.

Claims

1, bellows ball valve, comprise valve gap (5), valve body (11), valve rod (2) and spheroid (10), be in transmission connection with spheroid (10) with the movable valve rod (2) that cooperates of valve gap (5), it is characterized in that: doing to be arranged with the bellows (6) that fixes and be tightly connected with valve gap (5) on the valve rod of axial linear movement (2), bellows (6) also fixes with valve rod (2) and is sealed and matched, valve rod (2) is provided with spiral guide shaft groove, be installed with guide finger (8) on the plug handle (9) that is in transmission connection with spheroid (10), guide finger (8) places spiral guide shaft groove, makes the valve rod (2) of axial linear movement drive spheroid (10) rotation by valve handle (9).

2, bellows ball valve according to claim 1, it is characterized in that: described valve rod (2) is provided with line channel, the rack tube (7) fixedly connected with valve gap (5) is provided with directional bond (4) and axial movable cooperation of line channel, also is arranged with the Stem Mut (3) that radially flexibly connects axial restraint on valve rod (2).