CN2608781Y

CN2608781Y - Valve

Info

Publication number: CN2608781Y
Application number: CN 03242371
Authority: CN
Inventors: 赵广路
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-26
Filing date: 2003-03-26
Publication date: 2004-03-31
Anticipated expiration: 2013-03-26

Abstract

The utility model discloses a valve, which comprises a valve body(1), a valve cover(2), a valve rod(3), a gate plate(4) and a handle(5). The gate plate(4) is arranged on one side of the valve rod(3), and the valve rod(3) is movable connected with the gate plate(4). The valve rod(3) stresses a lateral pressure which is reverse to flowing direction of medium to the gate plate(4) through a moveable connecting rod, and the inlet(7) of the valve is closed. Therefore, the valve has good sealing property and prevents leakage of the medium.

Description

Valve

Technical field:

The utility model relates to a kind of valve.

Background technique:

The present gate valve that uses, the valve rod lower end directly connects flashboard, it is in the groove that relies on the descending inserted valve seat of flashboard medium to be blocked, with valve closing, service time one is long, and flashboard and valve body wearing and tearing produce the slit, cause dielectric leakage, make valve closing not tight, produce phenomenons such as run, drip, leak.

The model utility content:

The purpose of this utility model is to provide a kind of good seal, the antileakaging valve of medium.

The utility model valve comprises valve body, valve gap, valve rod, flashboard and handle, and flashboard is positioned at a side of valve rod, is flexible connection between valve rod and the flashboard.

As a kind of improvement of the present utility model, stem lower portion is provided with sleeve pipe, for being threaded, is provided with movable rod between sleeve pipe and the flashboard between sleeve pipe and the valve rod, and the connection part of sleeve pipe and movable rod is provided with limiting stopper.

As improvement of the present utility model, valve rod is provided with stuffing box gland, and stuffing box gland is a fold shape, and the upper end links to each other with valve gap, and the lower end links to each other with sleeve pipe.

As another improvement of the present utility model, for being threaded, be provided with movable rod between valve rod and the flashboard between valve rod upper end and the handle, the connection part of valve rod and flashboard and movable rod is equipped with limiting stopper.

As improvement of the present utility model, valve rod is provided with stuffing box gland, and stuffing box gland is a fold shape, and the upper end links to each other with valve gap, and the lower end links to each other with valve rod.

Because the flashboard of the utility model valve is positioned at a side of valve rod, be connected stem movement by movable rod between valve rod and the flashboard, flashboard is moved up and down thereupon, when ram movement to the bottom, flashboard is motionless, this moment, valve rod continued motion, make the connecting end of movable rod and valve rod continue to descend, movable rod rotates, valve rod by movable rod to flashboard apply one with MEDIA FLOW to opposite lateral pressure, with the import complete closed, reach good sealing effect, medium is difficult for leaking.In addition, because valve rod is provided with stuffing box gland, the upper end of stuffing box gland is fixed on the valve gap, the lower end is fixed on sleeve pipe or the valve rod, stuffing box gland is a fold shape, and with fore and aft motion about the valve rod, like this, stuffing box gland has been strengthened the sealing effect of valve just from the connection part sealing of valve internal with valve rod and valve gap.

Description of drawings:

Fig. 1 is the structural representation of a kind of mode of execution of the utility model.

Fig. 2 is the structural representation of the another kind of mode of execution of the utility model.

Embodiment:

As shown in Figure 1, the utility model valve, comprise valve body 1, valve gap 2, valve rod 3, flashboard 4 and handle 5, flashboard 4 is positioned at a side of valve rod 3, corresponding with the import of valve, be flexible connection between valve rod 3 and the flashboard 4, can adopt two kinds of different mode of executions, first kind of mode is applicable to the pressure medium larger part, as shown in Figure 1, in valve rod 3 bottoms sleeve pipe 7 is housed, between sleeve pipe 7 and the valve rod 3 for being threaded, like this, rotation valve rod 3 just makes sleeve pipe 7 along valve rod 3 upper and lower liftings, and then drives the keying of flashboard 4.Between sleeve pipe 7 and flashboard 4, be connected with movable rod 6, sleeve pipe 7 is provided with limiting stopper 31 with the connection part of movable rod 6, limiting stopper 31 can be a projection, it also can be groove, be used for the sphere of activities of

restraint connecting rod

6,7 of movable rod 6 and sleeve pipes are kept at an angle along with valve rod 3 upper and lower liftings, when flashboard 4 moves to the end, make movable rod 6 can break away from limiting stopper 31, flashboard is produced lateral thrust.Sleeve pipe 7 can also be connected a draught spring 32 with 6 of movable rods, avoids pressure medium excessive, and movable rod 6 is too upwarped, and causes that flashboard 4 can not cut out fully.In addition, cross the components of rotation and in valve, deviate from, can stop boss increasing on the valve gap 2 or on the valve rod 3, also can increase the diameter of top valve rod 3 for preventing valve rod 3.Be illustrated in figure 2 as second kind of mode of execution, be applicable to the pressure medium smaller part, between valve rod 3 bottoms and flashboard 4, directly be connected movable rod 6, sleeve pipe 7 and flashboard 4 all are provided with limiting stopper 31 with the connection part of movable rod 6, valve rod 3 adopts the existing kind of drive, promptly between valve rod 3 upper ends and the handle 5 for being threaded handle with sleeve 5, make valve rod 3 upper and lower liftings, drive the keying of flashboard 4 by valve rod 3 by movable rod 6.By sealing gasket 8 sealings, as shown in Figure 1, sealing gasket 8 can be one and the corresponding O-ring seal of valve inlet between flashboard 4 and the valve inlet.For guaranteeing good sealing effect, avoid the flashboard 4 and the changing of the relative positions of import to cause dielectric leakage, preferably adopt shape with flashboard 4 identical and wrap one whole rubber cushion of flashboard 4, as shown in Figure 2.Be with stuffing box gland 9 on the valve rod 3, stuffing box gland 9 can adopt the high-strength rubber material of high-low temperature resistant, acid resistant alkali to make, stuffing box gland 9 is a fold shape, can stretch in the middle part, can be along with valve rod 3 move up and down, as shown in Figure 1, the lower end of stuffing box gland 9 is enclosed within the upper end of sleeve pipe, as shown in Figure 2, the lower end of stuffing box gland 9 is enclosed within on the valve rod 3.The upper end of stuffing box gland 9 is fixed on the valve gap 2, can will extend a boss with the connection part of valve rod 3 in valve body 1 on the valve gap 2, and the upper end of stuffing box gland 9 is enclosed within on this boss fixing.Certainly, also the upper end of stuffing box gland 9 can be fixed on the connection part of valve gap 2 and valve body 1.The connection part of valve outer valve stem 3 and valve gap 2 can adopt traditional valve gap 2 top boards to add the encapsulating method of packing, and inside and outside so two-layer seal arrangement can solve the sealing problem of 2 of valve rod 3 and valve gaps, the possibility of minimizing dielectric leakage effectively.

Claims

1, a kind of valve comprises valve body (1), valve gap (2), valve rod (3), flashboard (4) and handle (5), and it is characterized in that: described flashboard (4) is positioned at a side of valve rod (3), is flexible connection between valve rod (3) and the flashboard (4).

2, valve according to claim 1, it is characterized in that: described valve rod (3) bottom is provided with sleeve pipe (7), between sleeve pipe (7) and the valve rod (3) for being threaded, be provided with movable rod (6) between sleeve pipe (7) and the flashboard (4), described sleeve pipe (7) is provided with limiting stopper (31) with the connection part of movable rod (6).

3, valve according to claim 2 is characterized in that: described valve rod (3) is provided with stuffing box gland (9), and stuffing box gland (9) is a fold shape, and the upper end links to each other with valve gap (2), and the lower end links to each other with sleeve pipe (7).

4, valve according to claim 1, it is characterized in that: between described valve rod (3) upper end and the handle (5) for being threaded, be provided with movable rod (6) between valve rod (3) and the flashboard (4), valve rod (3) and flashboard (4) are equipped with limiting stopper (31) with the connection part of movable rod (6).

5, valve according to claim 4 is characterized in that: described valve rod (3) is provided with stuffing box gland (9), and stuffing box gland (9) is a fold shape, and the upper end links to each other with valve gap (2), and the lower end links to each other with valve rod (3).