CN206206633U - A kind of clamping-proof type cut-off valve - Google Patents

Abstract

The utility model discloses a kind of clamping-proof type cut-off valve, including valve body and valve pipe, the left and right sides of the valve body is mounted on valve pipe, the inner chamber bottom of the valve body is installed with valve seat, and the inner chamber of the valve body is provided with antiseize device, and the anti-locking apparatus include fixed plate, the upper surface of the fixed plate is provided with screw, the valve rod runs through screw, and the valve rod is connected with screw screw thread, and the left and right sides of the fixed plate is mounted on fixed case.The clamping-proof type cut-off valve, when valve rod is twisted, valve rod squeezes fixed plate, and fixed plate promotes rocker-arm, rocker-arm is to fixed case inner working so as to promote sliding bar, sliding bar starts to promote support bar, support bar is extruded damping spring, when valve rod has been twisted, rocker-arm is set to reset by damping spring, it is possible to prevente effectively from filler is forced through tight and causes frictional force between valve rod and packing ring to increase, cause the stuck irreducible phenomenon of valve rod to occur, improve safety in utilization.

Description

A kind of clamping-proof type cut-off valve

Technical field

The utility model is related to cut-off valve technical field, specially a kind of clamping-proof type cut-off valve.

Background technology

Valve is the control unit in fluid delivery system, with cut-off, regulation, water conservancy diversion, prevents adverse current, voltage stabilizing, shunting Or the function such as overflow pressure relief, for the valve of fluid control systems, from simplest stop valve to extremely complex robot control system(RCS) In various valves used, its kind and specification be quite various, and current cut-off valve is widely used in oil, natural gas, coal gas, stone Make closed circuit device, such as Patent No. on the pipeline of oily liquefied gas and oil refining, airport, chemical industry, Oil ＆ Gas Storage etc. 201320168205.1 patent, including valve body, are provided with valve rod and flashboard in valve body, valve rod bottom is connected with flashboard, valve rod top End is connected with connecting rod, handwheel is set with connecting rod, although simple structure, long service life, but common shape in cut-off valve Lubricity between the packing ring and valve rod of formula would generally be reduced, and the elasticity of packing ring can also be decreased, the frictional force of valve rod Also increase therewith, so as to valve rod can be caused stuck, cause valve block timely to reset, and the use for reducing high-pressure stop valve can By property.

Utility model content

The purpose of this utility model is to provide a kind of clamping-proof type cut-off valve, with asking for solving to propose in above-mentioned background technology Topic.

To achieve the above object, the utility model provides following technical scheme：A kind of clamping-proof type cut-off valve, including valve body and Valve pipe, the left and right sides of the valve body is mounted on valve pipe, and the inner chamber bottom of the valve body is installed with valve seat, the valve seat Top valve block is installed, the valve block coordinates with valve seat and is connected, and the top of the valve block is provided with valve rod, and the valve rod runs through Valve body, the top of the valve rod is provided with handwheel, and the inner chamber of the valve body is provided with antiseize device, and the antiseize device includes solid Fixed board, the upper surface of the fixed plate is provided with screw, and the valve rod runs through screw, and the valve rod is connected with screw screw thread, described The left and right sides of fixed plate is mounted on fixed case, and the inner chamber of the fixed case is provided with outer barrel, and the inner chamber of the outer barrel is installed There is damping spring, support bar is installed on the inside of the damping spring, the both sides up and down of the support bar are mounted on the 3rd cunning Plate, the support bar is connected by damping spring with the 3rd slide plate slides, and sliding bar is provided with the inside of the support bar, described The both sides up and down of sliding bar are mounted on the first slide plate, and the sliding bar is connected with the first slide plate slides, the sliding bar it is interior Side is provided with rocker-arm, the inner side of the rocker-arm be connected with fixed plate.

Preferably, the top of the valve body is provided with valve rod fixing device, and the valve rod fixing device includes steadying plate, institute State and screw rod is installed on the outer wall of steadying plate, the steadying plate is connected with screw flight, valve rod is installed on the inside of the screw rod Fixed plate.

Preferably, valve rod neonychium is installed on the inside of the fixed plate.

Preferably, rubber sleeve is wrapped up on the outer wall of the handwheel.

Preferably, the both sides up and down of the rocker-arm are mounted on the second slide plate, the rocker-arm and the second slide plate slides Connection.

Compared with prior art, the beneficial effects of the utility model are：The clamping-proof type cut-off valve, by screw and valve rod spiral shell Line is connected, and twisting valve rod can make on valve block and valve base sealing or separate, and in twisting valve rod, valve rod squeezes fixed plate, Fixed plate promotes rocker-arm, rocker-arm, so as to promote sliding bar, to be slided by sliding bar and the first slide plate to fixed case inner working Dynamic connection, sliding bar starts to promote support bar, support bar to be connected with the 3rd slide plate slides by damping spring, extrudes support bar Damping spring, when valve rod has been twisted, makes rocker-arm reset by damping spring, it is possible to prevente effectively from filler is forced through tight and leads Frictional force increase between valve rod and packing ring is caused, causes the stuck irreducible phenomenon of valve rod to occur, improve safety in utilization.

Brief description of the drawings

Fig. 1 is the utility model structural representation；

Fig. 2 is antiseize device structural representation of the present utility model.

In figure：1st, valve body, 2, antiseize device, 201, outer barrel, 202, damping spring, 203, fixed case, the 204, first slide plate, 205th, fixed plate, the 206, the 3rd slide plate, 207, support bar, 208, screw, 209, rocker-arm, the 210, second slide plate, 211, slide Bar, 3, valve seat, 4, valve rod, 5, valve rod fixing device, 501, valve rod fixed plate, 502, steadying plate, 503, screw rod, 504, valve rod protects Protection pad, 6, rubber sleeve, 7, valve pipe, 8, handwheel, 9, valve block.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.

Fig. 1-2 is referred to, the utility model provides a kind of technical scheme：A kind of clamping-proof type cut-off valve, including valve body 1 and valve Pipe 7, the left and right sides of valve body 1 is mounted on valve pipe 7, and the inner chamber bottom of valve body 1 is installed with valve seat 3, the top peace of valve seat 3 Equipped with valve block 9, valve block 9 coordinates with valve seat 3 and is connected, and the top of valve block 9 is provided with valve rod 4, and valve rod 4 runs through valve body 1, valve rod 4 Top is provided with handwheel 8, and rubber sleeve 6 is wrapped up on the outer wall of handwheel 8, by rubber sleeve 6 handwheel 8 can be prevented excessively sliding inconvenient Rotate, the inner chamber of valve body 1 is provided with antiseize device 2, and antiseize device 2 includes fixed plate 205, and the upper surface of fixed plate 205 is provided with Screw 208, valve rod 4 runs through screw 208, and valve rod 4 is connected with the screw thread of screw 208, is connected with the screw thread of valve rod 4 by screw 208, turns round Ovable valve stem 4 can make valve block 9 upper with the sealing of valve seat 3 or separate, and the left and right sides of fixed plate 205 is mounted on fixed case 203, the inner chamber of fixed case 203 is provided with outer barrel 201, and the inner chamber of outer barrel 201 is provided with damping spring 202, damping spring 202 Inner side is provided with support bar 207, and the both sides up and down of support bar 207 are mounted on the 3rd slide plate 206, and support bar 207 passes through damping Spring 202 is slidably connected with the 3rd slide plate 206, and the inner side of support bar 207 is provided with sliding bar 211, and up and down the two of sliding bar 211 Side is mounted on the first slide plate 204, and sliding bar 211 is slidably connected with the first slide plate 204, and the inner side of sliding bar 211 is provided with bullet Lever 209, the both sides up and down of rocker-arm 209 are mounted on the second slide plate 210, and 209 and second slide plate of rocker-arm 210 is slided and connected Connect, being slidably connected by the slide plate 210 of rocker-arm 209 and second can strengthen the stability of elastic rod 209, rocker-arm 209 it is interior Side is connected with fixed plate 205, and when valve rod 4 is twisted, valve rod 4 squeezes fixed plate 205, and fixed plate 205 promotes rocker-arm 209, bullet Lever 209, so as to promote sliding bar 211, is slided by 211 and first slide plate of sliding bar 204 and connected to the inner working of fixed case 203 Connect, sliding bar 211 starts to promote support bar 214, support bar 214 to be slidably connected with the 3rd slide plate 212 by damping spring 202, Support bar 214 is extruded damping spring 202, when valve rod 4 has been twisted, rocker-arm 209 is resetted by damping spring 202, can It is forced through tight and causes frictional force between valve rod 4 and packing ring to increase to be prevented effectively from filler, causes that valve rod 4 is stuck can not to be resetted Phenomenon occur, the top of valve body 1 is provided with valve rod fixing device 5, and valve rod fixing device 5 includes steadying plate 502, steadying plate Screw rod 503 is installed, steadying plate 502 is connected with the screw thread of screw rod 503, and the inner side of screw rod 503 is provided with fixed plate on 502 outer wall 501, it is connected with the screw thread of screw rod 503 by steadying plate 502, twisting screw rod 503 can make screw rod 503 with ovable valve stem fixed plate 501 Rotated to the direction of valve rod 4, valve rod 4 can be reinforced by valve rod fixed plate 501, strengthen the stability of valve rod 4, fixed plate 501 inner side is provided with valve rod neonychium 504, and the abrasion valve rod 4 of valve rod fixed plate 501 can be prevented by valve rod neonychium 504.

It is connected with the screw thread of valve rod 4 by screw 208, twisting valve rod 4 can make valve block 9 upper with the sealing of valve seat 3 or separate Open, when valve rod 4 is twisted, valve rod 4 squeezes fixed plate 205, and fixed plate 205 promotes rocker-arm 209, and rocker-arm 209 is to fixed case 203 inner workings are slidably connected by sliding bar 211 so as to promote sliding bar 211 with the first slide plate 204, and sliding bar 211 starts Promote support bar 214, support bar 214 to be slidably connected with the 3rd slide plate 212 by damping spring 202, extrude support bar 214 and subtract Shake spring 202, when valve rod 4 has been twisted, makes rocker-arm 209 reset, it is possible to prevente effectively from filler is pressed by damping spring 202 Tension and cause between valve rod 4 and packing ring frictional force to increase, cause the stuck irreducible phenomenon of valve rod 4 to occur, raising makes Use security.

In description of the present utility model, it is to be understood that term " coaxial ", " bottom ", " one end ", " top ", " in Portion ", " other end ", " on ", " side ", " top ", " interior ", " front portion ", " center ", the orientation of the instruction such as " two ends " or position close System is, based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplify description, rather than Indicate or imply signified device or element and must have specific orientation, with specific azimuth configuration and operation, therefore can not It is interpreted as to limitation of the present utility model.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " setting ", " connection ", " Gu Calmly ", the term such as " spinning " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally； Can mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be with Be two element internals connection or two interaction relationships of element, unless otherwise clearly restriction, for this area For those of ordinary skill, concrete meaning of the above-mentioned term in the utility model can be as the case may be understood.

While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art, It is appreciated that these embodiments can be carried out various changes in the case where principle of the present utility model and spirit is not departed from, repaiies Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of clamping-proof type cut-off valve, including valve body（1）With valve pipe（7）, the valve body（1）The left and right sides be mounted on valve pipe （7）, it is characterised in that：The valve body（1）Inner chamber bottom be installed with valve seat（3）, the valve seat（3）Top be provided with Valve block（9）, the valve block（9）With valve seat（3）Coordinate and be connected, the valve block（9）Top valve rod is installed（4）, the valve rod （4）Through valve body（1）, the valve rod（4）Top handwheel is installed（8）, the valve body（1）Inner chamber antiseize device is installed （2）, the antiseize device（2）Including fixed plate（205）, the fixed plate（205）Upper surface be provided with screw（208）, it is described Valve rod（4）Through screw（208）, the valve rod（4）With screw（208）Screw thread is connected, the fixed plate（205）The left and right sides It is mounted on fixed case（203）, the fixed case（203）Inner chamber outer barrel is installed（201）, the outer barrel（201）Inner chamber Damping spring is installed（202）, the damping spring（202）Inner side support bar is installed（207）, the support bar（207） Both sides up and down be mounted on the 3rd slide plate（206）, the support bar（207）By damping spring（202）With the 3rd slide plate （206）It is slidably connected, the support bar（207）Inner side sliding bar is installed（211）, the sliding bar（211）Up and down two Side is mounted on the first slide plate（204）, the sliding bar（211）With the first slide plate（204）It is slidably connected, the sliding bar （211）Inner side rocker-arm is installed（209）, the rocker-arm（209）Inner side and fixed plate（205）It is connected.

2. a kind of clamping-proof type cut-off valve according to claim 1, it is characterised in that：The valve body（1）Top be provided with Valve rod fixing device（5）, the valve rod fixing device（5）Including steadying plate（502）, the steadying plate（502）Outer wall on pacify Equipped with screw rod（503）, the steadying plate（502）With screw rod（503）Screw thread is connected, the screw rod（503）Inner side valve is installed Bar fixed plate（501）.

3. a kind of clamping-proof type cut-off valve according to claim 2, it is characterised in that：The fixed plate（501）Inner side peace Equipped with valve rod neonychium（504）.

4. a kind of clamping-proof type cut-off valve according to claim 1, it is characterised in that：The handwheel（8）Outer wall on wrap up Rubber sleeve（6）.

5. a kind of clamping-proof type cut-off valve according to claim 1, it is characterised in that：The rocker-arm（209）Up and down two Side is mounted on the second slide plate（210）, the rocker-arm（209）With the second slide plate（210）It is slidably connected.