CN107514489B - Forced sealing ball valve opening and closing driving device - Google Patents
Forced sealing ball valve opening and closing driving device Download PDFInfo
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- CN107514489B CN107514489B CN201710985209.1A CN201710985209A CN107514489B CN 107514489 B CN107514489 B CN 107514489B CN 201710985209 A CN201710985209 A CN 201710985209A CN 107514489 B CN107514489 B CN 107514489B
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- 238000007789 sealing Methods 0.000 title claims abstract description 130
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model relates to a forced sealing ball valve opening and closing driving device, which comprises a sealing valve rod, a valve ball valve rod, a valve rod driving turntable and a valve rod travel stop block, wherein the sealing valve rod drives a sealing driving wheel to rotate, and the valve rod drives the turntable to drive the sealing valve rod to rotate; the valve ball and the valve rod drive the valve ball to rotate, and the valve rod travel stop controls the rotation travel of the valve ball and the valve rod; and the valve rod drives the turntable to drive the sealing valve rod to rotate and drive the spiral driving wheel to jack up and retract the sealing cover after the valve rod rotates to the closing position of the valve ball. The beneficial effects of the utility model are as follows: the valve rod driving turntable is used for driving the valve ball and the sealing cover according to the operation process of the forced sealing ball valve by matching with the elastic hanging ring, the driving hook, the separating wedge angle and the resetting wedge angle which are arranged on the valve rod of the valve ball, so that the valve rod driving turntable is convenient to operate and high in reliability, and is particularly suitable for the application of large-caliber and high-pressure valves.
Description
Technical Field
The utility model belongs to ball valves, and particularly relates to a forced sealing ball valve opening and closing driving device.
Background
In the field of fluid control, such as oil and gas production flow switching, pipeline shut-off, metering, pressure regulation, molecular sieve switching, compressor inlet and outlet, hydrogen working conditions in oil refining processes, the fields of frequent operation of components of an ammonia synthesis device and severe requirements on fluid switch control and closing tightness, the valve is required to be capable of generating pressure drop as small as possible in a straight-through state and providing forced torque sealing not influenced by pipeline medium pressure. Forced seal ball valves are recognized as an ideal solution. Unlike common ball valves, the forced sealing ball valve is operated in two steps, one is to rotate the valve ball between the open and the close positions and the other is to jack up and retract the sealing cover to realize forced sealing. How to complete the operation of the forced sealing ball valve by adopting a single operation action like a common valve is one of key technologies of the design of the forced sealing ball valve. The Chinese patent (patent number 2016204911272) discloses a 'forced sealing ball valve', wherein a valve rod is adopted to drive a forced sealing device, and simultaneously the valve rod drives the valve ball to rotate through a torsion spring, so that two operation steps are completed. However, the application of such a solution to large caliber and high pressure valves may result in unstable operation or even failure.
Disclosure of Invention
The utility model aims to provide a technical scheme of a forced sealing ball valve opening and closing driving device, which improves the operation performance and reliability of the forced sealing ball valve.
In order to achieve the above object, the technical scheme of the present utility model is as follows: the forced sealing ball valve is arranged in the forced sealing ball valve, the forced sealing ball valve comprises a valve ball, the valve ball is provided with a sealing cover and a spiral driving wheel, when the valve ball rotates to a closed position, the spiral driving wheel rotates to jack up and retract the sealing cover through threads, and the spiral driving wheel is driven to rotate by the sealing driving wheel; the forced sealing ball valve opening and closing driving device comprises a sealing valve rod, a valve ball valve rod, a valve rod driving turntable and a valve rod travel stop block, wherein the sealing valve rod drives the sealing driving wheel to rotate, and the valve rod driving turntable drives the sealing valve rod to rotate; the valve ball and the valve rod drive the valve ball to rotate, and the valve rod travel stop block controls the rotation travel of the valve ball and the valve rod; the valve ball valve rod and the sealing valve rod rotate simultaneously in the rotating stroke of the valve ball valve rod, and the valve ball valve rod stops rotating after the valve ball valve rod rotates to a valve ball closing position; the valve rod driving turntable continuously drives the sealing valve rod to rotate and drives the spiral driving wheel to jack up and retract the sealing cover.
Further, the forced sealing ball valve opening and closing driving device is provided with a driving device box body, and the valve rod driving turntable is arranged in the driving device box body; the valve rod of the valve ball is provided with an elastic hanging ring, the elastic hanging ring rotates along with the valve rod of the valve ball, the elastic hanging ring is an elastic hanging ring which generates elastic displacement in the rotating circumferential direction of the valve rod of the valve ball, the driving device box body is provided with a disengaging wedge angle and a disengaging hook, the positions of the disengaging wedge angle and the disengaging hook correspond to the positions of the elastic hanging ring, and the valve rod driving turntable is provided with a driving hook for pulling the elastic hanging ring; when the valve rod of the valve ball rotates to the closing position of the valve ball, the disengaging wedge angle pushes the elastic hanging ring to disengage from the driving hook and hang into the disengaging hook.
Still further, the drive arrangement box is equipped with the upper cover, break away from the wedge angle and break away from the couple setting and be in on the upper cover.
Still further, the valve rod driving turntable is provided with a reset wedge angle with a position corresponding to the elastic hooking ring, and when the valve rod driving turntable rotates towards the opening direction, the reset wedge angle pushes the elastic hooking ring to be separated from the separation hook and is hung into the driving hook of the valve rod driving turntable.
Still further, the valve ball valve rod is equipped with the stem, the stem is equipped with the through-hole, elasticity articulates the ring and includes link, peg and pressure spring, the peg passes the through-hole of stem, the one end of peg with the link articulates, the other end of peg with be equipped with one respectively between the stem the pressure spring.
Still further, the valve ball valve rod is equipped with the stem, the stem is equipped with the through-hole, elasticity articulates the ring and includes link, peg and elastic expansion bracket, the peg passes the through-hole of stem, link and peg respectively with the both ends of expansion bracket are articulated.
Still further, the elastic expansion bracket comprises a first expansion bracket, a second expansion bracket and a pressure spring, one end of the first expansion bracket is hinged with the hanging rod, the other end of the first expansion bracket is provided with a first spring retainer, the second expansion bracket is hinged with the hanging ring, the other end of the second expansion bracket is provided with a second spring retainer, the pressure spring is sleeved on the first expansion bracket and the second expansion bracket, and two ends of the pressure spring are respectively propped against the first spring retainer and the second spring retainer.
Further, the forced sealing ball valve opening and closing driving device is provided with a driving device box body, the valve rod travel stop block comprises a closing position stop block and an opening position stop block, and the valve rod of the valve ball is provided with a rotating handle; the closing position stop block and the opening position stop block are arranged on the driving device box body, the rotating handle contacts with the closing position stop block when the valve ball valve rod rotates to the closing position of the valve ball, and the rotating handle contacts with the opening position stop block when the valve ball valve rod rotates to the opening position of the valve ball.
Furthermore, the closing position stop block and the opening position stop block are mounted on the driving device box body through stop block bolts, contact surfaces of the closing position stop block and the opening position stop block and the rotating handle are inclined planes, and the stop block bolts are provided with locking nuts.
Still further, the valve stem drive rotary disk is a worm gear disk driven by a worm. .
The beneficial effects of the utility model are as follows: the valve rod driving turntable is matched with the elastic hanging ring and the driving hook which are arranged on the valve rod rotating handle of the valve ball, and the elastic hanging ring is separated from the hook, the wedge angle is separated from the wedge angle and the reset wedge angle, so that the valve rod driving turntable drives the operation of the valve ball and the sealing cover according to the operation process of the forced sealing ball valve, and the elastic hanging ring is adopted, so that the sealing cover integrated on the valve ball can be reliably tightened on the valve ball substrate at all positions except the forced sealing jacking, and the influence of medium turbulence is avoided. When the valve ball integrally rotates in the closing direction, fault tolerance guarantee of rigid connection can be provided. When the valve ball base body rotates to the closing position, the movement association between the valve ball base body and the jacking of the sealing cover can be separated, so that the consumption of forced sealing torque is reduced. Convenient operation and high reliability, and is particularly suitable for the application of large-caliber and high-pressure valves.
The present utility model will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a block diagram of the present utility model;
FIG. 2 shows the structure of the box body of the driving device, wherein the upper cover is turned open;
FIG. 3 is a block diagram of the upper cover of the opening drive mechanism housing of the present utility model with the stem rotated to the valve ball closed position;
FIG. 4 is a block diagram of the open position of the forced seal ball valve of the present utility model;
FIG. 5 is a block diagram of the closed position of the forced seal ball valve of the present utility model;
FIG. 6 is a schematic view of the disengagement wedge angle pushing elastic hitching ring of the present utility model disengaged from the driving hook;
FIG. 7 is a schematic view of the elastic hitching ring of the present utility model hitching and unhooking hooks;
FIG. 8 is a schematic illustration of the reset wedge angle of the valve stem driver disk of the present utility model pushing the resilient hooking ring back into the driving hook of the valve stem driver disk;
FIG. 9 is another block diagram of the elastic hitching ring of the present utility model; the elastic hanging ring is provided with an elastic expansion bracket.
Detailed Description
As shown in fig. 1 to 5, a forced sealing ball valve opening and closing driving device is provided in a forced sealing ball valve, the forced sealing ball valve comprises a valve ball 10 provided with a sealing cover 11 and a spiral driving wheel 12, when the valve ball rotates to a closing position, the spiral driving wheel rotates, the sealing cover is jacked and retracted through a thread 13, and the spiral driving wheel is driven to rotate by a sealing driving wheel 14; the forced sealing ball valve opening and closing driving device comprises a sealing valve rod 20, a valve ball valve rod 30, a valve rod driving turntable 40 and valve rod travel stops (51, 52), wherein the sealing valve rod drives the sealing driving wheel to rotate, and the valve rod driving turntable drives the sealing valve rod to rotate; the valve ball and the valve rod drive the valve ball to rotate, and the valve rod travel stop block controls the rotation travel of the valve ball and the valve rod; the valve ball valve rod and the sealing valve rod rotate simultaneously in the rotating stroke of the valve ball valve rod, and the valve ball valve rod stops rotating after the valve ball valve rod rotates to a valve ball closing position; the valve rod driving turntable continuously drives the sealing valve rod to rotate and drives the spiral driving wheel to jack up and retract the sealing cover.
The forced sealing ball valve opening and closing driving device is provided with a driving device box 60, and the valve rod driving turntable is arranged in the driving device box; the valve ball valve rod is provided with an elastic hanging ring 70 which rotates along with the valve ball valve rod, the elastic hanging ring is an elastic hanging ring which generates elastic displacement in the rotation circumferential direction of the valve ball valve rod, the driving device box body is provided with a disengaging wedge angle 62 and a disengaging hook 63 which are positioned corresponding to the elastic hanging ring, and the valve rod driving turntable is provided with a driving hook 41 for pulling the elastic hanging ring; when the valve rod of the valve ball rotates to the closing position of the valve ball, the disengaging wedge angle pushes the elastic hanging ring to disengage from the driving hook and hang into the disengaging hook.
The drive device box is provided with an upper cover 61, and the disengaging wedge angle and the disengaging hook are arranged on the upper cover.
The valve rod driving turntable is provided with a reset wedge angle 42 which is positioned corresponding to the elastic hanging ring, and when the valve rod driving turntable rotates towards the opening direction, the reset wedge angle pushes the elastic hanging ring to be separated from the separation hook and hung into the driving hook of the valve rod driving turntable.
The valve ball valve rod is equipped with the stem 31, the stem is equipped with the through-hole, the elasticity articulates the ring and includes link 70, peg 71 and pressure spring 72, the peg passes the through-hole of stem, the one end of peg with the link articulates, the other end of peg with be equipped with one respectively between the stem the pressure spring.
As shown in fig. 9, another structure of the elastic hooking ring is: the valve ball valve rod is equipped with the stem 31, the stem is equipped with the through-hole, elasticity articulates the ring and includes link 70, peg 71 and elasticity expansion bracket, the peg passes the through-hole of stem, link and peg respectively with the both ends of expansion bracket are articulated.
The elastic expansion bracket comprises a first expansion bracket 73, a second expansion bracket 74 and a pressure spring 72, one end of the first expansion bracket is hinged with the hanging rod, the other end of the first expansion bracket is provided with a first spring retainer 75, the second expansion bracket is hinged with the hanging ring, the other end of the second expansion bracket is provided with a second spring retainer 76, the pressure spring is sleeved on the first expansion bracket and the second expansion bracket, and two ends of the pressure spring respectively push the first spring retainer and the second spring retainer.
The valve stem travel stops include a closed position stop 51 and an open position stop 52 mounted on the drive housing, the stem contacting the closed position stop when the valve ball stem is rotated to the valve ball closed position, and the stem contacting the open position stop when the valve ball stem is rotated to the valve ball open position.
The closing position stopper and the opening position stopper are mounted on the driving device case through stopper bolts 53, contact surfaces of the closing position stopper and the opening position stopper with the valve ball valve rod rotating handle 31 are inclined surfaces, and the stopper bolts are provided with lock nuts 54.
The closing position stop block and the opening position stop block are always in contact with a convex surface of the upper cover of the box body of the driving device, and the convex surface and the upper cover of the box body are integrated. Thereby providing a reliable limit stop.
The stem drive rotor is a turbine disk driven by a worm 43. The valve rod driving turntable rotates at an angle of not more than 270 degrees relative to the valve rod of the valve ball.
Embodiment one:
as shown in fig. 1 to 5, a forced sealing ball valve opening and closing driving device is provided in a forced sealing ball valve.
The forced seal ball valve comprises a ball 10 provided with a sealing cover 11 mounted in a rib hole 18 of the ball valve by a rib shaft and a screw driving wheel 12 which is pushed up and retracted by a screw thread 13 when rotated to a closed position. When the sealing cover is jacked up, the sealing cover is jacked on the valve seat 15, so that the sealing of the ball valve is realized; the sealing cover is separated from the valve seat and contacts with the valve ball when being retracted, and a certain gap is kept between the sealing cover and the valve seat, so that the valve ball does not rub with the valve seat when rotating. The spiral drive wheel is driven in rotation by the seal drive wheel 14. In this embodiment, the seal drive wheel drives the screw drive wheel in rotation via an intermediate drive gear 16. The spiral driving wheel, the intermediate transmission gear and the sealing driving wheel are bevel gears, and the axis of the spiral driving wheel is perpendicular to the axis of the sealing driving wheel. In order to reduce the end face friction between the spiral driving wheel and the valve ball, a thrust bearing 17 is arranged on the contact surface of the spiral driving wheel and the valve ball.
The forced sealing ball valve opening and closing driving device comprises a sealing valve rod 20 and a valve ball valve rod 30. The sealing valve rod is fixedly connected with the sealing driving wheel and drives the sealing driving wheel to rotate. The valve ball valve rod passes through the sealing valve rod, is fixedly connected with the valve ball and drives the valve ball to rotate. A rotating handle 31 is arranged at the upper end of the valve rod of the valve ball.
A driving device case 60 is provided on the stem side of the forced seal ball valve. The drive unit housing is provided with an upper cover 61.
A stem drive dial 40 is provided in the drive unit housing. The valve stem driving turntable is a turbine disc, and a worm 43 for driving the valve stem driving turntable is provided in the driving device housing. The valve rod driving turntable is connected with the sealing valve rod and drives the sealing valve rod to rotate.
A valve rod stroke stop block is arranged in the driving device box body and controls the rotation stroke of the valve rod of the valve ball. The stem travel stops include a closed position stop 51 and an open position stop 52, with the stem contacting the closed position stop when the ball valve stem is rotated to the ball closed position and the stem contacting the open position stop when the ball valve stem is rotated to the ball open position. The closing position stopper and the opening position stopper are mounted on the side wall of the driving device case by stopper bolts 53, the contact surfaces (51 a,52 a) of the closing position stopper and the opening position stopper with the stem are inclined surfaces, and the stopper bolts are provided with lock nuts 54. The length of the stop block bolt screwed into the driving device box body is adjusted, and the inclined planes of the closed position stop block and the open position stop block can finely adjust the stroke of the rotating handle of the valve rod of the valve ball.
The valve rod of the valve ball is provided with an elastic hanging ring 70, and the elastic hanging ring comprises a hanging ring 70, two hanging rods 71 and two pressure springs 72. The rotating handle of the valve rod of the valve ball is provided with two through holes, the two hanging rods respectively penetrate through the through holes of the two rotating handles, one ends of the two hanging rods are hinged with the hanging rings, and a pressure spring is respectively arranged between the other ends of the two hanging rods and the rotating handle. The elastic hanging ring can generate elastic displacement in the rotation circumferential direction of the valve rod of the valve ball.
The valve stem driving turntable is provided with a driving hook 41 for pulling the elastic hitching ring, and is also provided with a reset wedge angle 42 corresponding to the elastic hitching ring. The upper cover 61 of the drive unit housing is provided with a disengagement wedge angle 62 and a disengagement hook 63 in a position corresponding to the elastic hitching ring.
The working principle of the forced sealing ball valve is as follows: in the rotation stroke of the valve ball and the valve rod, the valve ball and the valve rod rotate simultaneously, the valve ball and the valve rod stop rotating after rotating to the closing position of the valve ball, and the valve rod drives the turntable to drive the sealing valve rod to rotate and drive the spiral driving wheel to jack up and retract the sealing cover. In general, the valve stem driving turntable rotates at an angle of not more than 270 ° relative to the valve stem of the valve ball, and in this embodiment, the valve stem driving turntable rotates at an angle of not more than 110 ° relative to the valve stem of the valve ball, so that the sealing operation can be completed.
When the sealing valve rod and the valve ball valve rod rotate relatively, the spiral driving wheel rotates relatively to the valve ball, and the spiral driving wheel jacks up and withdraws the sealing cover through the threads 13. When the sealing cover is in the recovery state, the bottom surface of the sealing cover is in contact with the end surface 19 of the valve ball, and the spiral driving wheel is not rotated in the direction of retracting the sealing cover. At this time, the driving hook of the valve rod driving turntable hooks the elastic hooking ring, and the compression spring 72 maintains a certain pretightening force between the valve rod driving turntable and the elastic hooking ring.
When the forced sealing ball valve is in an open state, as shown in fig. 4, the rotating handle 31 of the valve rod of the valve ball is in contact with the open position stop block 52, and when the valve rod driving turntable 40 rotates in a closing direction (as shown in a direction G in fig. 2), the driving hook 41 of the valve rod driving turntable pulls the valve rod of the valve ball to rotate, and the valve rod driving turntable simultaneously drives the sealing valve rod 20 to synchronously rotate. The sealing cap 11 is maintained in the retracted position due to the lack of relative rotation between the sealing valve stem and the valve ball valve stem.
When the valve stem driving dial pulls the valve stem to rotate to the valve ball closing position, as shown in fig. 6, the stem 31 of the valve stem contacts the closing position stopper 51, and the valve stem stops rotating. Because of the existence of the pressure spring 72, the driving hook 41 drives the elastic hanging ring to move continuously, the pressure spring is compressed, and in the compression stroke of the pressure spring, the elastic hanging ring 70 is pushed by the disengaging wedge angle 62 arranged on the upper cover of the driving device box body to disengage from the driving hook 41 and hang into the disengaging hook 63, as shown in fig. 7; under the pressure of the compression spring, the stem 31 is pressed against the closed position stop, holding the valve ball in the closed position. The valve rod driving turntable separated from the elastic hanging ring continuously rotates in the closing direction, the sealing valve rod 20 and the valve ball valve rod 30 relatively rotate, the sealing valve rod drives the spiral driving wheel 12 to rotate, the spiral driving wheel threads 13 jack up the sealing cover, and the sealing cover is jacked on the valve seat 15. The sealing of the forced seal ball valve is achieved as shown in fig. 5.
When the forced sealing ball valve is opened, the valve rod drives the rotary table to rotate in the opening direction (in the K direction in fig. 2), the valve rod drives the sealing valve rod to rotate, the sealing valve rod drives the spiral driving wheel to rotate, the spiral driving wheel threads 13 retract the sealing cover, the bottom surface of the sealing cover is in contact with the end surface 19 of the valve ball, and a gap is formed between the sealing cover and the valve seat. As shown in fig. 8, during the rotation of the valve stem driving turntable, the reset wedge angle 42 of the valve stem driving turntable pushes the elastic hooking ring to separate from the separating hook 63 of the upper cover of the box body of the driving device, and the elastic hooking ring is re-hooked into the driving hook of the valve stem driving turntable. The valve rod drives the turntable to continue rotating in the opening direction, and as the bottom surface of the sealing cover is contacted with the end surface of the valve ball, the sealing valve rod and the valve rod of the valve ball do not rotate relatively any more, the valve rod of the valve ball and the sealing valve rod synchronously rotate in the opening direction, the valve ball rotates in the opening direction, and the elastic hanging ring also rotates along with the valve rod of the valve ball. The stem 31 of the ball valve stem is rotated to contact the open position stopper 52 and the ball is rotated to the open position, completing the opening operation of the forced seal ball valve, as shown in fig. 4.
The forced sealing ball valve opening and closing driving device adopts a valve rod driving turntable, and is matched with an elastic hanging ring and a driving hook which are arranged on the valve rod of the valve ball, a separating hook, a separating wedge angle and a resetting wedge angle, so that the valve rod driving turntable drives the valve ball and the sealing cover to operate according to the operation process of the forced sealing ball valve, and the opening and closing operation of the forced sealing ball valve can be effectively realized only by rotating a worm. Convenient operation and high reliability, and is particularly suitable for the application of large-caliber and high-pressure valves.
Embodiment two:
referring to fig. 9, a forced sealing ball valve opening and closing driving device is an improvement of the elastic hanging ring in the first embodiment.
In this embodiment, the valve ball valve rod is equipped with the stem 31, and the stem is equipped with the through-hole, and the structure of elasticity articulates the ring includes: the hanging ring 70, the hanging rod 71 and the elastic expansion bracket, wherein the elastic expansion bracket comprises a first expansion bracket 73, a second expansion bracket 74 and a pressure spring 72.
One hanging rod penetrates through the through hole of the rotating handle, one end of the hanging rod is provided with a boss 77, and the hanging rod is hung on the rotating handle through the boss. The other end of the hanging rod is hinged with one ends of two first telescopic frames, and the two first telescopic frames are arranged on two symmetrical sides of the hanging rod. The other end of the first expansion bracket is provided with a first spring stop 75.
The link is articulated with the one end of two second expansion brackets, and two second expansion brackets set up the both ends at the link. The other end of the second expansion bracket is provided with a second spring stop 76. The two compression springs are sleeved outside a first expansion bracket and a second expansion bracket, and the two ends of each compression spring respectively push against the first spring retainer and the second spring retainer.
When the driving hook of the valve rod driving turntable pulls the hanging ring, the elastic expansion frame generates elastic expansion, and the function of elastic hanging ring is realized.
Claims (7)
1. The forced sealing ball valve is arranged in the forced sealing ball valve, the forced sealing ball valve comprises a valve ball, the valve ball is provided with a sealing cover and a spiral driving wheel, when the valve ball rotates to a closed position, the spiral driving wheel rotates to jack up and retract the sealing cover through threads, and the spiral driving wheel is driven to rotate by the sealing driving wheel; the forced sealing ball valve opening and closing driving device is characterized by comprising a sealing valve rod, a valve ball valve rod, a valve rod driving turntable and a valve rod stroke stop block, wherein the sealing valve rod drives the sealing driving wheel to rotate, and the valve rod driving turntable drives the sealing valve rod to rotate; the valve ball and the valve rod drive the valve ball to rotate, and the valve rod travel stop block controls the rotation travel of the valve ball and the valve rod; the valve ball valve rod and the sealing valve rod rotate simultaneously in the rotating stroke of the valve ball valve rod, and the valve ball valve rod stops rotating after the valve ball valve rod rotates to a valve ball closing position; the valve rod driving turntable continuously drives the sealing valve rod to rotate and drives the spiral driving wheel to jack up and retract the sealing cover;
the forced sealing ball valve opening and closing driving device is provided with a driving device box body, and the valve rod driving turntable is arranged in the driving device box body; the valve rod of the valve ball is provided with an elastic hanging ring, the elastic hanging ring rotates along with the valve rod of the valve ball, the elastic hanging ring is an elastic hanging ring which generates elastic displacement in the rotating circumferential direction of the valve rod of the valve ball, the driving device box body is provided with a disengaging wedge angle and a disengaging hook, the positions of the disengaging wedge angle and the disengaging hook correspond to the positions of the elastic hanging ring, and the valve rod driving turntable is provided with a driving hook for pulling the elastic hanging ring; when the valve rod of the valve ball rotates to the closing position of the valve ball, the disengaging wedge angle pushes the elastic hanging ring to disengage from the driving hook and hang into the disengaging hook;
the driving device box body is provided with an upper cover, and the disengaging wedge angle and the disengaging hook are arranged on the upper cover;
the valve rod driving turntable is provided with a reset wedge angle, the position of the reset wedge angle corresponds to the elastic hanging ring, and when the valve rod driving turntable rotates towards the opening direction, the reset wedge angle pushes the elastic hanging ring to be separated from the separation hook and hung into the driving hook of the valve rod driving turntable.
2. The forced sealing ball valve opening and closing driving device according to claim 1, wherein the valve rod of the valve ball is provided with a rotating handle, the rotating handle is provided with a through hole, the elastic hanging ring comprises a hanging ring, a hanging rod and a pressure spring, the hanging rod penetrates through the through hole of the rotating handle, one end of the hanging rod is hinged with the hanging ring, and one pressure spring is respectively arranged between the other end of the hanging rod and the rotating handle.
3. The forced sealing ball valve opening and closing driving device according to claim 1, wherein the valve rod of the valve ball is provided with a rotating handle, the rotating handle is provided with a through hole, the elastic hanging ring comprises a hanging ring, a hanging rod and an elastic telescopic frame, the hanging rod penetrates through the through hole of the rotating handle, and the hanging ring and the hanging rod are respectively hinged with two ends of the telescopic frame.
4. The forced sealing ball valve opening and closing driving device according to claim 3, wherein the elastic expansion bracket comprises a first expansion bracket, a second expansion bracket and a pressure spring, one end of the first expansion bracket is hinged with the hanging rod, the other end of the first expansion bracket is provided with a first spring retainer, the second expansion bracket is hinged with the hanging ring, the other end of the second expansion bracket is provided with a second spring retainer, the pressure spring is sleeved on the first expansion bracket and the second expansion bracket, and two ends of the pressure spring respectively push against the first spring retainer and the second spring retainer.
5. The forced sealing ball valve opening and closing driving device according to claim 1, wherein the forced sealing ball valve opening and closing driving device is provided with a driving device box body, the valve rod stroke stop comprises a closing position stop and an opening position stop, and the valve ball valve rod is provided with a rotating handle; the closing position stop block and the opening position stop block are arranged on the driving device box body, the rotating handle contacts with the closing position stop block when the valve ball valve rod rotates to the closing position of the valve ball, and the rotating handle contacts with the opening position stop block when the valve ball valve rod rotates to the opening position of the valve ball.
6. The forced sealing ball valve opening and closing driving device according to claim 5, wherein the closing position stop and the opening position stop are mounted on the driving device box body through stop bolts, contact surfaces of the closing position stop and the opening position stop with the rotating handle are inclined surfaces, and the stop bolts are provided with locking nuts.
7. A forced seal ball valve opening and closing drive according to claim 1 wherein said valve stem drive rotary disc is a worm gear disc driven by a worm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710985209.1A CN107514489B (en) | 2017-10-20 | 2017-10-20 | Forced sealing ball valve opening and closing driving device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710985209.1A CN107514489B (en) | 2017-10-20 | 2017-10-20 | Forced sealing ball valve opening and closing driving device |
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| CN107514489A CN107514489A (en) | 2017-12-26 |
| CN107514489B true CN107514489B (en) | 2024-04-12 |
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| CN201710985209.1A Active CN107514489B (en) | 2017-10-20 | 2017-10-20 | Forced sealing ball valve opening and closing driving device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108278378B (en) * | 2018-02-01 | 2019-03-05 | 淄博沃泰斯石化设备有限公司 | A kind of valve seat driving forced seal ball valve |
| CN108194698B (en) * | 2018-03-08 | 2024-02-02 | 淄博沃泰斯石化设备有限公司 | Stepless locking device for valve rod |
| CN108426056B (en) * | 2018-04-17 | 2019-08-13 | 淄博沃泰斯石化设备有限公司 | A kind of side valve bar forced seal ball valve |
| CN110242770B (en) * | 2019-07-02 | 2020-05-29 | 浙江好球阀门有限公司 | Three-way ball valve |
| CN111550597B (en) * | 2020-05-18 | 2022-09-20 | 凯瑞特阀业有限公司 | Ball valve |
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| US4637421A (en) * | 1986-05-15 | 1987-01-20 | Stunkard Gerald A | In-line repairable top entry ball valve |
| CN1632356A (en) * | 2005-01-28 | 2005-06-29 | 陈国顺 | Double propulsion high temperature ball valve |
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| CN107191614A (en) * | 2017-05-25 | 2017-09-22 | 刘晓琦 | A kind of forced seal ball valve with scroll spring arrangement of clutch |
| CN207316123U (en) * | 2017-10-20 | 2018-05-04 | 淄博沃泰斯石化设备有限公司 | A kind of forced seal ball valve opens and closes driving device |
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| US8201574B2 (en) * | 2009-12-11 | 2012-06-19 | Virgo Engineers, Inc. | Bi-directional sealing ball valve |
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| US4637421A (en) * | 1986-05-15 | 1987-01-20 | Stunkard Gerald A | In-line repairable top entry ball valve |
| CN1632356A (en) * | 2005-01-28 | 2005-06-29 | 陈国顺 | Double propulsion high temperature ball valve |
| CN104390035A (en) * | 2014-09-16 | 2015-03-04 | 中国船舶重工集团公司第七〇七研究所九江分部 | Six-way switching ball valve |
| CN107191614A (en) * | 2017-05-25 | 2017-09-22 | 刘晓琦 | A kind of forced seal ball valve with scroll spring arrangement of clutch |
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| CN107514489A (en) | 2017-12-26 |
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