CN204573172U - Valve rod push-type ball valve - Google Patents
Valve rod push-type ball valve Download PDFInfo
- Publication number
- CN204573172U CN204573172U CN201520267348.7U CN201520267348U CN204573172U CN 204573172 U CN204573172 U CN 204573172U CN 201520267348 U CN201520267348 U CN 201520267348U CN 204573172 U CN204573172 U CN 204573172U
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- Prior art keywords
- valve
- valve rod
- gland
- valve body
- medium runner
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Abstract
The utility model discloses a kind of valve rod push-type ball valve, comprise valve body, valve gap, valve rod, ball core and drive unit, valve body is provided with medium runner, the entry end of medium runner is arranged on valve body, the outlet end of medium runner is arranged on valve gap, by spool chamber UNICOM between the entry end of medium runner and outlet end, ball core is arranged in this spool chamber, valve body is provided with valve road, valve rod lower end is connected with ball core through valve road, packing seal assembly is provided with between valve rod and valve road, valve body is also provided with the Gland abutted with packing seal assembly, valve body is provided with the mounting bracket of drive unit, valve rod upper end is connected with drive unit through mounting bracket, valve rod upper end is provided with connecting shaft cover, between connecting shaft cover and mounting bracket, there is space, space mounting has thrust bush, this thrust bush to be sheathed on valve rod and to be fixedly connected with valve rod, the two ends of thrust bush overlap with connecting shaft respectively and mounting bracket abuts.The utility model structural stability, valve rod can not be shifted up and down.
Description
Technical field
The utility model belongs to valve technology field, especially a kind of valve rod push-type ball valve.
Background technique
Ball valve is a kind of control unit realizing pipeline fluid Flow-rate adjustment, commutation or break-in facility.Ball valve can be divided into straight-through type, Three way type, tubing type and five-way type structure, can be divided into fixing ball and floating ball two kinds by different sealing principles.Ball-valve structure mainly comprises valve body, ball core, seal ring, valve rod and drive unit, medium channel is provided with in valve body, ball core is the open-shut device of ball valve, valve rod one end is connected with ball core, the valve rod the other end and drive unit are linked, valve body has the valve road that can do rotation motion for valve rod around valve body vertical center line, thus realize the opening and closing of valve body.
At present, ordinary ball valve is generally at high temperature, operate at high voltage.As shown in Figure 1, the lower end of valve rod coordinates with spool, the upper end of valve rod is connected with drive unit, valve rod upper end position is also provided with connecting shaft cover, packing seal assembly is provided with between the lower end of valve rod and valve road, packing seal assembly comprises filler and pad, and Gland one end is fixed on valve body by bolt and nut, and the Gland the other end is squeezed on filler and makes it coordinate with valve stem seal; Connecting shaft cover is positioned at above this Gland, this valve body is also provided with the support for fixed drive device, leaves space between this connecting shaft cover and support.When medium fluid flows through from medium channel, too high pressure medium can make valve rod jump up and down in valve body.Owing to having space 20 between connecting shaft cover and support, valve rod can be shifted up and down, to cause in valve each parts along stem shaft to being moved, the correct mounting point of each parts in valve is caused to offset, even moving up and down of valve rod can cause excessive friction to filler and pad, damage packing seal assembly, have influence on the normal sealability of ball valve, cause valve seal to lose efficacy.
Model utility content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of valve rod push-type ball valve, this valve rod push-type ball valve is under the washing away of high-pressure medium, can not occur to be shifted up and down, ensure that the mounting point of each parts in valve does not correctly offset, too much wearing and tearing can not be had to packing seal assembly simultaneously, improve the working life of black box.
To achieve these goals, the technical solution adopted in the utility model is: a kind of valve rod push-type ball valve, comprise valve body, valve gap, valve rod, ball core and drive unit, valve body is fixedly connected with valve gap, valve body is provided with medium runner, the entry end of medium runner is arranged on valve body, the outlet end of medium runner is arranged on valve gap, by spool chamber UNICOM between the entry end of medium runner and outlet end, ball core is arranged in this spool chamber, valve body is provided with valve road, valve rod lower end is connected with ball core through valve road, packing seal assembly is provided with between valve rod and valve road, valve body is also provided with the Gland abutted with packing seal assembly, valve body is provided with the mounting bracket of drive unit, valve rod upper end is connected with drive unit through mounting bracket, valve rod upper end is provided with connecting shaft cover, between connecting shaft cover and mounting bracket, there is space, it is characterized in that: described space mounting has thrust bush, this thrust bush to be sheathed on valve rod and to be fixedly connected with valve rod, the two ends of thrust bush overlap with connecting shaft respectively and mounting bracket abuts.
In said structure, valve rod upper end is provided with thrust bearing, this thrust bearing can be embedded to coordinate by pin or buckle and be fixedly connected with valve rod, guarantee that valve rod and connecting shaft cover can not be out of shape under high-temperature high-pressure state, limit moving axially of valve rod, ensure that valve rod is under the impact of medium fluid, keep correct mounting point not play, ensure that the mounting point of each parts in valve is not shifted, prevent the filler in valve rod and packing seal assembly or pad excessive friction, prevent the situation that valve is stuck or moment of torsion is excessive from occurring, extend the working life of stuffing box packing assembly and valve.
As further setting of the present utility model, described thrust bush is fixedly connected with valve rod by pin, and described valve rod and pin corresponding part are provided with pin-and-hole, and pin is through thrust bush and pin-and-hole secure fit.
In said structure, thrust bearing is fixed by a pin on valve rod, and in order to improve soundness, this pin is the pin that high strength alloy steel is made.
As further setting of the present utility model, described valve road inwall has radially outstanding limited step, described valve rod lower end is provided with the expansion shaft shoulder, this expansion shaft shoulder and limited step form axial limiting and coordinate, Gland in described packing seal assembly is positioned at above limited step, and the pad in described packing seal assembly is at limited step and expand between the shaft shoulder.
In said structure, filler in valve road and pad lay respectively at the upper and lower end of this limited step, the restricted effect that it moves vertically of the expansion shaft shoulder of this limited step to valve rod, this limited step coordinates with thrust bearing and further improves valve rod phenomenon of play up and down occurred under the fluid impact of large pressure; In addition, arranging of this limited step can also at dismounting Gland, guarantee that valve rod can not go out valve body when changing filler, play the effect that safety changes filler, alleviate the burden of Gland to filler and valve rod simultaneously, Gland of the prior art should extrude filler and filler also will be made tightly to wrap valve rod limit it and move axially simultaneously, and such Gland just needs larger impacting force to filler.
As further setting of the present utility model, described Gland comprises gland body, gland body offers the gland passage that can pass for valve rod, one end of gland body is extended with the abutment end extruded with Gland, the other end of gland body extends to form mounting plate towards radial dilatation, mounting plate is provided with holding down bolt, this holding down bolt one end is fixedly connected with valve body through Gland, the holding down bolt the other end has been threaded setscrew nut, this setscrew nut is positioned at mounting plate one end away from valve body, is provided with counterbalance spring between setscrew nut and mounting plate.
In said structure, because above-mentioned limited step has shared the partial function of Gland, namely it is to the position-limiting action of valve rod, make this Gland realize effectively extruding to filler and make tight sealing engagement between filler and valve rod, and this counterbalance spring be arranged so that Gland can according to filler itself compressed capability and to its resilient extruding force, along with the service time of filler increases, then to be subject to the extruding force of counterbalance spring larger for filler, compress more obvious, distortion is from small to large there is gradually in this filler along with the prolongation of service time, filler is avoided to kill completely at filled gland at the very start, just need to change filler once inefficacy, service time is short.
As further setting of the present utility model, valve seat is provided with towards the side of medium runner opening end in described spool chamber, leaf spring is provided with between valve seat and medium runner inwall, valve seat is provided with towards one end of ball core the sealing gasket coordinated with seal spool, and described medium runner outlet end is provided with sealing gasket towards the side inwall of ball core.
In said structure, jointly medium runner is formed after this valve gap is connected with valve body, outlet end from valve gap one end after fluid enters through the spool chamber at ball core place from the medium inlet of valve body side flows out, and ball core realizes being sealed and matched by the sealing gasket on valve seat and the sealing gasket on valve gap.
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of ball valve in prior art;
Accompanying drawing 2 is the utility model specific embodiment structural representation;
Accompanying drawing 3 is the local A enlarged view of the utility model specific embodiment accompanying drawing 1;
Accompanying drawing 4 is the local B enlarged view of the utility model specific embodiment accompanying drawing 2;
Valve body 1, valve road 11, limited step 111, valve gap 2, valve rod 3, connecting shaft cover 31, thrust bearing 32, pin-and-hole 33, the expansion shaft shoulder 34, ball core 4, handle 5, medium runner 6, entry end 61, spool chamber 62, outlet end 63, Gland 71, gland body 711, gland passage 712, abutment end 713, mounting plate 714, holding down bolt 715, setscrew nut 716, counterbalance spring 717, filler 72, pad 73, mounting bracket 8, valve seat 9, leaf spring 91, sealing gasket 92.
Embodiment
Specific embodiment of the utility model is valve rod 3 push-type ball valve as Figure 1-4, comprise valve body 1, valve gap 2, valve rod 3, ball core 4 and driving handle 5, valve body 1 is fixedly connected with valve gap 2, valve body 1 is provided with medium runner 6, the entry end 61 of medium runner 6 is arranged on valve body 1, the outlet end 63 of medium runner 6 is arranged on valve gap 2, by spool chamber 62 UNICOM between the entry end 61 of medium runner 6 and outlet end 63, ball core 4 is arranged in this spool chamber 62, valve body 1 is provided with valve road 11, valve rod 3 lower end is connected with ball core 4 through valve road 11, packing seal assembly is provided with between valve rod 3 and valve road 11, valve body 1 is also provided with the Gland 71 abutted with packing seal assembly, valve body 1 is provided with the mounting bracket 8 of driving handle 5, valve rod 3 upper end is connected with driving handle 5 through mounting bracket 8, valve rod 3 upper end is provided with connecting shaft cover 31, between connecting shaft cover 31 and mounting bracket 8, there is space, space mounting has thrust bearing 32, this thrust bearing 32 to be sheathed on valve rod 3 and to be fixedly connected with valve rod 3, the two ends of thrust bearing 32 overlap with connecting shaft respectively 31 and mounting bracket 8 abut.
Above-mentioned valve rod 3 upper end is provided with thrust bearing 32, this thrust bearing 32 can be embedded to coordinate by pin or buckle and be fixedly connected with valve rod 3, guarantee that valve rod 3 and connecting shaft cover 31 can not be out of shape under high-temperature high-pressure state, limit moving axially of valve rod 3, ensure that valve rod 3 is under the impact of medium fluid, keep correct mounting point not play, ensure that the mounting point of each parts in valve is not shifted, prevent valve rod 3 and the filler 72 in packing seal assembly or pad 73 excessive friction, prevent the situation that valve is stuck or moment of torsion is excessive from occurring, extend the working life of stuffing box packing assembly and valve.
Above-mentioned thrust bearing 32 is fixedly connected with valve rod 3 by pin, and valve rod 3 and pin corresponding part are provided with pin-and-hole 33, and pin is through thrust bearing 32 and pin-and-hole 33 secure fit.Thrust bearing 32 is fixed by a pin on valve rod 3, and in order to improve soundness, this pin is the pin that high strength alloy steel is made.
Above-mentioned valve road 11 inwall has radially outstanding limited step 111, valve rod 3 lower end is provided with and expands the shaft shoulder 34, this expansion shaft shoulder 34 forms axial limiting with limited step 111 and coordinates, Gland 71 in packing seal assembly is positioned at above limited step 111, and the pad 73 in packing seal assembly is at limited step 111 and expand between the shaft shoulder 34.Filler 72 in valve road 11 and pad 73 lay respectively at the upper and lower end of this limited step 111, the restricted effect that it moves vertically of the expansion shaft shoulder 34 of this limited step 111 pairs of valve rods 3, this limited step 111 coordinates with thrust bearing 32 and further improves valve rod 3 phenomenon of play up and down occurred under the fluid impact of large pressure; In addition, arranging of this limited step 111 can also at dismounting Gland 71, guarantee that valve rod 3 can not go out valve body 1 when changing filler 72, play the effect that safety changes filler 72, alleviate the burden of Gland 71 pairs of fillers 72 and valve rod 3 simultaneously, filler 72 gland 71 of the prior art should extrude filler 72 and filler 72 also will be made tightly to wrap valve rod 3 limit it and move axially simultaneously, and such Gland 71 pairs of fillers 72 just need larger impacting force.
Above-mentioned Gland 71 comprises gland body 711, gland body 711 offers the gland passage 712 that can pass for valve rod 3, one end of gland body 711 is extended with the abutment end 713 extruded with Gland 71, the other end of gland body 711 extends to form mounting plate 714 towards radial dilatation, mounting plate 714 is provided with holding down bolt 715, this holding down bolt 715 one end is fixedly connected with valve body 1 through Gland 71, holding down bolt 715 the other end has been threaded setscrew nut 716, this setscrew nut 716 is positioned at mounting plate 714 one end away from valve body 1, counterbalance spring 717 is provided with between setscrew nut 716 and mounting plate 714.Because above-mentioned limited step 111 has shared the partial function of Gland 71, namely it is to the position-limiting action of valve rod 3, make this Gland 71 pairs of fillers 72 realize effectively extruding and make tight sealing engagement between filler 72 and valve rod 3, and this counterbalance spring 717 be arranged so that Gland 71 can according to filler 72 itself compressed capability and to its resilient extruding force, along with the service time of filler 72 increases, then to be subject to the extruding force of counterbalance spring 717 larger for filler 72, compress more obvious, distortion is from small to large there is gradually in this filler 72 along with the prolongation of service time, filler 72 is avoided to kill completely at filled gland 71 at the very start, just need to change filler 72 once inefficacy, service time is short.
Valve seat 9 is provided with towards the side of medium runner 6 opening end in above-mentioned spool chamber 62, leaf spring 91 is provided with between valve seat 9 and medium runner 6 inwall, valve seat 9 is provided with towards one end of ball core 4 sealing gasket 92 coordinated with seal spool, and medium runner 6 outlet end 63 is provided with sealing gasket 92 towards the side inwall of ball core 4.This valve gap 2 is connected rear common formation medium runner 6 with valve body 1, flow out from the outlet end 63 of valve gap 2 one end after fluid enters through the spool chamber 62 at ball core 4 place from the medium inlet of valve body 1 side, ball core 4 realizes being sealed and matched by the sealing gasket 92 on valve seat 9 and the sealing gasket 92 on valve gap 2.
The utility model is not limited to above-mentioned embodiment; persons skilled in the art are content disclosed in the utility model; other multiple embodiments can be adopted to implement of the present utility model; or every employing project organization of the present utility model and thinking; do simple change or change, all fall into protection domain of the present utility model.
Claims (5)
1. a valve rod push-type ball valve, comprise valve body, valve gap, valve rod, ball core and drive unit, valve body is fixedly connected with valve gap, valve body is provided with medium runner, the entry end of medium runner is arranged on valve body, the outlet end of medium runner is arranged on valve gap, by spool chamber UNICOM between the entry end of medium runner and outlet end, ball core is arranged in this spool chamber, valve body is provided with valve road, valve rod lower end is connected with ball core through valve road, packing seal assembly is provided with between valve rod and valve road, valve body is also provided with the Gland abutted with packing seal assembly, valve body is provided with the mounting bracket of drive unit, valve rod upper end is connected with drive unit through mounting bracket, valve rod upper end is provided with connecting shaft cover, between connecting shaft cover and mounting bracket, there is space, it is characterized in that: described space mounting has thrust bush, this thrust bush to be sheathed on valve rod and to be fixedly connected with valve rod, the two ends of thrust bush overlap with connecting shaft respectively and mounting bracket abuts.
2. valve rod push-type ball valve according to claim 1, is characterized in that: described thrust bush is fixedly connected with valve rod by pin, and described valve rod and pin corresponding part are provided with pin-and-hole, and pin is through thrust bush and pin-and-hole secure fit.
3. valve rod push-type ball valve according to claim 1 and 2, it is characterized in that: described valve road inwall has radially outstanding limited step, described valve rod lower end is provided with the expansion shaft shoulder, this expansion shaft shoulder and limited step form axial limiting and coordinate, Gland in described packing seal assembly is positioned at above limited step, and the pad in described packing seal assembly is at limited step and expand between the shaft shoulder.
4. valve rod push-type ball valve according to claim 3, it is characterized in that: described Gland comprises gland body, gland body offers the gland passage that can pass for valve rod, one end of gland body is extended with the abutment end extruded with Gland, the other end of gland body extends to form mounting plate towards radial dilatation, mounting plate is provided with holding down bolt, this holding down bolt one end is fixedly connected with valve body through Gland, the holding down bolt the other end has been threaded setscrew nut, this setscrew nut is positioned at mounting plate one end away from valve body, counterbalance spring is provided with between setscrew nut and mounting plate.
5. valve rod push-type ball valve according to claim 1 and 2, it is characterized in that: in described spool chamber, be provided with valve seat towards the side of medium runner opening end, leaf spring is provided with between valve seat and medium runner inwall, valve seat is provided with towards one end of ball core the sealing gasket coordinated with seal spool, and described medium runner outlet end is provided with sealing gasket towards the side inwall of ball core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520267348.7U CN204573172U (en) | 2015-04-28 | 2015-04-28 | Valve rod push-type ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520267348.7U CN204573172U (en) | 2015-04-28 | 2015-04-28 | Valve rod push-type ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204573172U true CN204573172U (en) | 2015-08-19 |
Family
ID=53865813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520267348.7U Expired - Fee Related CN204573172U (en) | 2015-04-28 | 2015-04-28 | Valve rod push-type ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204573172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508645A (en) * | 2015-12-31 | 2016-04-20 | 宁波丰基特种阀门有限公司 | Ball valve assembly |
-
2015
- 2015-04-28 CN CN201520267348.7U patent/CN204573172U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508645A (en) * | 2015-12-31 | 2016-04-20 | 宁波丰基特种阀门有限公司 | Ball valve assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20210428 |