CN2816519Y

CN2816519Y - Corrugated pipe rotary-plug valve

Info

Publication number: CN2816519Y
Application number: CN 200520075459
Authority: CN
Inventors: 杨连成
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-07
Filing date: 2005-09-07
Publication date: 2006-09-13
Anticipated expiration: 2015-09-07

Abstract

The utility model relates to a corrugated pipe rotary-plug valve, which comprises a valve cover, a valve body, a valve rod and an opening and closing element, wherein the valve rod which is movably matched with the valve cover is in transmission connection with the opening and closing element; a corrugated pipe which is in fixed 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 slot is arranged on the valve rod; a guiding pin is fixedly arranged on a plug handle which is in transmission connection with the ball body and is arranged in the spiral shaft guiding groove, and thus the valve rod which does the axial rectilinear motion drives the opening and closing element to rotate through the plug 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 plug handle to causes the opening and closing element 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

Corrugated pipe cock

Technical field:

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

Background technique:

As everyone knows, stopcock is a kind of valve commonly used, generally comprise valve body, valve rod, open-shut device (stopper body), valve gap etc., open-shut device is made the function that rotation reaches opening and closing around the valve body center under the effect of valve rod, mainly play cut-out or distribution and change the media flow direction on pipeline.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 Corrugated pipe cock 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: Corrugated pipe cock, comprise valve gap, valve body, valve rod and open-shut device, be in transmission connection with movable valve rod and the open-shut device 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 open-shut device, guide finger places spiral guide shaft groove, makes the valve rod of axial linear movement drive the open-shut device rotation by the plug 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 open-shut device 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, Corrugated pipe cock, comprise valve gap 5, valve body 11, valve rod 2 and open-shut device 10, be in transmission connection with open-shut device 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 plug handle 9 that is in transmission connection with open-shut device 10, guide finger 8 places spiral guide shaft groove, makes the valve rod 2 of axial linear movement drive open-shut device 10 rotations by plug 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 plug handle 9 along Hand of spiral, plug handle 9 drives open-shut device 10 again and has finished 90 ° and rotatablely move, and has realized the keying function of stopcock.

Claims

1, Corrugated pipe cock, comprise valve gap (5), valve body (11), valve rod (2) and open-shut device (10), be in transmission connection with open-shut device (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 open-shut device (10), guide finger (8) places spiral guide shaft groove, makes the valve rod (2) of axial linear movement drive open-shut device (10) rotation by plug handle (9).

2, Corrugated pipe cock 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).