CN214578997U - Control valve opening and closing mechanism - Google Patents

Abstract

The utility model relates to a control valve starting and stopping mechanism, through setting up first antifriction bearing and eccentric main shaft, and set up the oval recess that uses with first antifriction bearing cooperation on the valve clack, rotatory eccentric main shaft drives first antifriction bearing at oval recess internal rotation swing, and then drive the valve clack and remove for sealed disk seat, the valve clack is before rotating, the sealed face of spherical crown shape separates with sealed disk seat, the valve clack rotates the back that resets, reverse rotation eccentric main shaft, drive first antifriction bearing at oval recess internal rotation swing, and then drive the valve clack and remove for sealed disk seat, until the sealed face of spherical crown shape and sealed disk seat butt, because the sealed face of spherical crown shape separates with sealed disk seat when the valve clack rotates, avoid producing the friction loss between the sealed face of spherical crown shape and the sealed disk seat, consequently, the life of control valve has been increased substantially.

Description

Control valve opening and closing mechanism

Technical Field

The utility model relates to a measurement control field, especially a control valve operating mechanism.

Background

The ball valve is a flow controller commonly used on pipelines, mainly comprising a floating ball valve and a fixed ball valve, wherein a control valve opening and closing mechanism for switching on or off a valve body of the ball valve is arranged in the ball valve, the existing control valve opening and closing mechanism continuously rubs with the valve body in the process of switching on or off the valve body, so that the opening and closing torque of the ball valve is large, the abrasion to a sealing valve seat and a spherical crown sealing surface is large in long-term use, the damage is easy to cause, and although other control valve opening and closing mechanisms can realize the opening and closing without friction, the structure is complex, and the practical application value is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a control valve starting and stopping mechanism and control valve, aim at solving among the prior art control valve starting and stopping mechanism and keeping lasting with the valve body friction at the in-process that switches on and cut off the valve body, it is big to lead to the ball valve to open and close the moment of torsion, and is big to the wearing and tearing of sealed disk seat and the sealed face of spherical crown shape in the long-term use, very easily causes the problem of damage.

The utility model provides a control valve opening and closing mechanism for switch on or cut off the control valve, it includes: valve clack, first antifriction bearing and eccentric main shaft, the valve clack includes annular main part and the sealed face of spherical cap, annular main part middle part is equipped with the first passageway that is used for switching on the valve body, the sealed face of spherical cap is located annular main part is global, annular main part is global to be equipped with first boss, first boss middle part is sunken to be formed with oval recess, first antifriction bearing install in oval recess and with the cell wall butt of oval recess, eccentric main shaft with first antifriction bearing hub connection rotates eccentric main shaft can drive first antifriction bearing in oval recess internal rotation swing is so that the valve clack removes.

Further, eccentric main shaft includes the rotation control pole, its connect in between the both ends of eccentric main shaft to towards keeping away from the radial extension of eccentric main shaft, the valve clack still includes the rotation control step, and it locates first boss, when eccentric main shaft rotates preset angle, can drive the rotation control pole rotates so that the rotation control pole with the butt of rotation control step.

The valve further comprises a torsion spring, the torsion spring is sleeved on the valve clack, the central line of the oval groove is parallel to the central line of the torsion spring, one end of the torsion spring is abutted to the valve clack, and the other end of the torsion spring is abutted to the valve body, so that the torsion spring stores energy when the control valve is opened and releases energy when the control valve is closed.

Further, the valve clack still includes first quick valve helping hand torsional spring installed part of closing, its with the annular main part is connected, first quick valve helping hand torsional spring installed part of closing with first boss adjacent setting, the torsional spring cover is located first boss outer wall, torsional spring one end with first quick valve helping hand torsional spring installed part butt of closing.

Further, the valve flap further comprises: second boss and the quick valve helping hand torsional spring installed part of closing of second, the second boss is located annular main body global is located and keeps away from one side of oval recess, the quick valve helping hand torsional spring installed part of closing of second with annular main body connects, and with the adjacent and interval setting of second boss, the torsional spring cover is located second boss outer wall, torsional spring one end with the quick valve helping hand torsional spring installed part butt of closing of second.

Further, the valve flap further comprises: the control valve opening and closing mechanism comprises an opening limiting step and a closing limiting step, wherein the opening limiting step and the closing limiting step are arranged on the peripheral surface of the annular main body and located on one side far away from the oval groove, when the control valve opening and closing mechanism is opened, the opening limiting step is used for abutting against the valve body, the first channel is consistent with the pipeline drift diameter of the valve body, when the control valve opening and closing mechanism is closed, the closing limiting step is used for abutting against the valve body, and the spherical crown-shaped sealing surface faces towards the sealing valve seat of the valve body.

Furthermore, the first rolling bearing is completely accommodated in the oval groove, the control valve opening and closing mechanism further comprises a cover plate, a second through hole for the eccentric main shaft to pass through is formed in the middle of the cover plate, and the cover plate is covered on one side, far away from the first channel, of the first boss so as to shield the oval groove.

Further, at least part of the outer contour of the cover plate is larger than the inner contour of the torsion spring.

Further, the control valve opening and closing mechanism still includes the aligning subassembly, and it includes universal aligning support and aligning base, universal aligning support with the global connection of annular main part to be located and keep away from one side of oval recess, the aligning base install in on the universal aligning support, and with universal aligning support cooperation is used.

A second aspect, the utility model provides a control valve starting and stopping mechanism, include: the valve comprises an eccentric main shaft, a valve clack, a driving part and a driven part, wherein the valve clack comprises an annular main body and a spherical crown-shaped sealing surface, a first channel for conducting the valve body is arranged in the middle of the annular main body, the spherical crown-shaped sealing surface is arranged on the peripheral surface of the annular main body and used for cutting off the valve body, the driving part is connected with the eccentric main shaft, the driven part is arranged on the annular main body, and the eccentric main shaft is rotated to drive the driving part to do eccentric motion so as to drive the valve clack to move.

The beneficial effects of the utility model reside in that: by arranging the first rolling bearing and the eccentric main shaft and arranging the elliptic groove matched with the first rolling bearing on the valve clack, the first rolling bearing is driven to rotate and swing in the elliptic groove by rotating the eccentric main shaft so as to roll and extrude the groove wall of the elliptic groove and further drive the valve clack to move relative to the sealing valve seat, the spherical crown-shaped sealing surface is separated from the sealing valve seat before the valve clack rotates, after the valve clack is rotated and reset, the eccentric main shaft is reversely rotated to drive the first rolling bearing to rotate and swing in the elliptic groove so as to roll and extrude the groove wall of the elliptic groove and further drive the valve clack to move relative to the sealing valve seat until the spherical crown-shaped sealing surface is abutted against the sealing valve seat, and because the spherical crown-shaped sealing surface is separated from the sealing valve seat when the valve clack rotates, the friction loss between the spherical crown-shaped sealing surface and the sealing valve seat is avoided, thereby greatly increasing the service life of the control valve. And because the control valve opening and closing mechanism can not generate friction when opening and closing, the torque required for opening and closing is low, the damage to the eccentric main shaft caused by large torque is avoided, the power consumption of an external electric actuating mechanism is reduced, and the explosion-proof safety of the control valve can be greatly improved.

Drawings

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings and examples, wherein:

FIG. 1 is a schematic structural view of a control valve opening and closing mechanism of the present invention;

FIG. 2 is a schematic view of another angle structure of the control valve opening and closing mechanism of the present invention;

FIG. 3 is a schematic view of the structure of the valve flap of the present invention;

FIG. 4 is a cross-sectional view of the overall structure of a control valve employing the application of the present invention;

FIG. 5 is another angle structure diagram of the valve flap of the present invention;

FIG. 6 is a schematic view of the whole structure of the control valve opening and closing mechanism of the present invention;

the figures are numbered:

1. a control valve opening and closing mechanism; 11. a valve flap; 111. an annular body; 1111. a first channel; 112. a spherical crown shaped sealing surface; 113. a first boss; 1131. an elliptical groove; 114. rotating the control step; 115. a first quick-closing valve power-assisted torsion spring mounting member; 116. a second boss; 117. a second rapid valve closing assistance torsion spring mounting member; 118. opening a limit step; 119. closing the limit step; 12. a first rolling bearing; 13. an eccentric main shaft; 131. rotating the control rod; 14. a torsion spring; 15. a cover plate; 16. a centering assembly; 161. a universal aligning bracket; 162. an aligning base; 2. a valve body; 21. sealing the valve seat.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

The utility model provides a control valve opening and closing mechanism 1, as shown in figures 1-4, comprising a valve clack 11, a first rolling bearing 12 and an eccentric main shaft 13. The valve flap 11 comprises an annular main body 111 and a spherical crown-shaped sealing surface 112, a first channel 1111 for conducting the valve body 2 is arranged in the middle of the annular main body 111, the spherical crown-shaped sealing surface 112 is arranged on the peripheral surface of the annular main body 111, a first boss 113 is arranged on the peripheral surface of the annular main body, and the middle of the first boss 113 is recessed and is provided with an oval groove 1131. The first rolling bearing 12 is mounted in the elliptical groove 1131 and abuts against the groove wall of the elliptical groove 1131, the eccentric main shaft 13 is connected with the first rolling bearing 12, and the first rolling bearing can be driven to rotate and swing in the elliptical groove 1131 by rotating the eccentric main shaft 13 so as to enable the valve clack 11 to move.

Through the embodiment, the eccentric main shaft 13 is rotated to drive the first rolling bearing 12 to rotate and swing in the elliptical groove 1131, so that the first rolling bearing 12 rolls and extrudes the groove wall of the elliptical groove 1131, and further the valve flap 11 moves relative to the sealing valve seat 21, before the valve flap rotates, the spherical crown-shaped sealing surface 112 is separated from the sealing valve seat 21, thereby realizing the pressure relief function similar to a pilot valve, firstly relieving the pressure of the pipeline at the air inlet end and then performing rotary opening, after the valve flap 11 rotates and resets, the eccentric main shaft 13 is rotated reversely to drive the first rolling bearing 12 to rotate and swing in the elliptical groove 1131, so that the first rolling bearing 12 rolls and extrudes the groove wall of the elliptical groove 1131, and further drives the valve flap 11 to move until the spherical crown-shaped sealing surface 112 abuts against the sealing valve seat 21, therefore, the compression and sealing process of the embodiment is forced compression, and the situation that the sealing is not tight due to the aging or abrasion of the sealing rubber ring can be compensated, the valve seat spring compensation mechanism can completely replace a complex valve seat spring compensation mechanism arranged on the traditional valve due to abrasion of the valve seat sealing rubber ring. Because the spherical crown-shaped sealing surface 112 is separated from the sealing valve seat 21 when the valve clack rotates, the friction loss between the spherical crown-shaped sealing surface 112 and the sealing valve seat 21 is avoided, and the service life of the control valve is greatly prolonged. And because the control valve opening and closing mechanism can not generate friction when opening and closing, the torque required by opening and closing is low, the damage to the eccentric main shaft 13 caused by large torque is avoided, the power consumption of an external electric actuating mechanism is reduced, and the explosion-proof safety of the control valve can be greatly improved.

In one embodiment, the eccentric main shaft 13 is generally cylindrical and is divided into a first section and a second section, the second section is provided with an eccentric amount compared with the first section, the first section is used for being inserted into a bearing in the external valve cover 3, and the second section is connected with the first rolling bearing 12.

In one embodiment, as shown in fig. 1 to 4, the eccentric main shaft 13 includes a rotation control rod 131 connected between two ends of the eccentric main shaft 13 and extending in a radial direction away from the eccentric main shaft 13, and the valve flap further includes a rotation control step 114 disposed on the first boss 113, and when the eccentric main shaft 13 rotates by a predetermined angle, the rotation control rod 131 is driven to rotate so that the rotation control rod 131 abuts against the rotation control step 114.

Specifically, after the rotation control rod 131 abuts against the rotation control step 114, continuing to rotate the eccentric main shaft 13 drives the valve flap 11 to rotate, thereby conducting the valve body. The preset angle in this embodiment is 180 degrees, and the valve body 2 can be completely conducted by rotating 180 degrees and then rotating 90 degrees. It will be appreciated that the preset angle may also be other angles, with adaptations by those skilled in the art.

In a specific embodiment, the control valve opening and closing mechanism 1 further includes a torsion spring 14, the torsion spring 14 is sleeved on the valve flap 11, the central line of the oval groove 1131 is parallel to the central line of the torsion spring, one end of the torsion spring 14 is abutted to the valve flap 11, and the other end of the torsion spring is abutted to the valve body 2, so that the valve flap 11 is rotated to store energy for the torsion spring 14 when the control valve is opened, when the control valve is closed, the torsion spring 14 releases energy to drive the valve flap 11 to rapidly complete the reverse rotation action under the state of keeping the automatic centering, and the economic loss and the potential safety hazard caused by slow closing of the control valve are reduced.

There are various ways of mounting the torsion spring 14, and two preferred embodiments will be described below.

In an embodiment, as shown in fig. 1 to 4, the valve flap 11 further includes a first quick-closing valve assisting torsion spring mounting member 115 connected to the annular main body 111, the first quick-closing valve assisting torsion spring mounting member 115 is disposed adjacent to the first boss 113, the torsion spring 14 is sleeved on an outer wall of the first boss 113, and one end of the torsion spring 14 abuts against the first quick-closing valve assisting torsion spring mounting member 115.

Specifically, torsional spring 14 one end and first quick closed valve helping hand torsional spring installed part 115 butt, the other end and the valve body 2 butt of control valve to rotating valve clack 11, carrying out the energy storage to torsional spring 14 when opening the control valve, when closing the control valve, torsional spring 14 release can be in order to drive valve clack 11 and accomplish reverse rotation's action fast under the state that keeps automatic aligning.

In another embodiment, as shown in fig. 1 to 5, the valve flap 11 further includes a second protrusion 116 and a second quick-closing valve assisting torsion spring mounting member 117, the second protrusion 116 is disposed on the circumferential surface of the annular main body 111 and located on the side away from the elliptical groove 1131, the second quick-closing valve assisting torsion spring mounting member 117 is connected to the annular main body 111 and located on the side away from the elliptical groove 1131, the second quick-closing valve assisting torsion spring mounting member 117 is disposed adjacent to the second protrusion 116, the torsion spring 14 is sleeved on the outer wall of the second protrusion 116, and one end of the torsion spring 14 abuts against the second quick-closing valve assisting torsion spring mounting member 117.

In an embodiment, the valve flap 11 includes an opening limit step 118 and a closing limit step 119, the opening limit step 118 and the closing limit step 119 are both disposed on the circumferential surface of the annular main body 111 and located on one side away from the elliptical groove 1131, when the control valve opening and closing mechanism is opened, the opening limit step 118 is used to abut against the valve body 2, the first channel 1111 is consistent with the pipeline diameter of the valve body 2, when the control valve opening and closing mechanism is closed, the closing limit step 119 is used to abut against the valve body 2, and the spherical crown-shaped sealing surface 112 faces the sealing valve seat 21 of the valve body 2.

In the embodiment, mechanical limit is adopted to guarantee the opening and closing reliability, the opening limit step 118 can ensure that the first channel 1111 is consistent with the pipeline drift diameter of the valve body when the control valve is opened, the control valve is conducted to the maximum extent, the fluid resistance is reduced, and the closing limit step 119 can ensure that the spherical crown sealing surface 112 corresponds to the sealing valve seat 21 when the control valve is closed, so that the control valve is cut off to the maximum extent.

The utility model discloses an annular main part 111, the sealed face 112 of spherical crown shape, first boss 113, rotation control step 114, first quick valve helping hand torsional spring installed part 115, second boss 116, the second is closed fast valve helping hand torsional spring installed part 117, is opened spacing step 118 and is closed spacing step 119 and can integrated into one piece to reduce die sinking quantity, in order to reduce manufacturing cost, also can be in the same place through the screw equipment, change alone when making things convenient for certain part to damage.

In an embodiment, as shown in fig. 1 and 6, the first rolling bearing 12 is completely accommodated in the elliptical groove 1131, the control valve opening and closing mechanism 1 further includes a cover plate 15, a second through hole (not shown) is formed in the middle of the cover plate 15, and the second through hole is used for the eccentric main shaft 13 to pass through, and the cover plate 15 is covered on one side of the first boss 113 far away from the first channel 1111 to shield or expose the elliptical groove 1131.

Specifically, the cover plate 15 can limit the relative position of the first rolling bearing 12, and avoid the first rolling bearing 12 from shifting in position, which may result in failure of the control valve opening and closing mechanism 1.

In one embodiment, as shown in fig. 1, 2, 3 and 6, at least a portion of the outer contour of the cover plate 15 is larger than the inner contour of the torsion spring 14, so that the cover plate 15 can limit the relative position of the torsion spring 14, and prevent the torsion spring 14 from separating from the outer wall of the first boss 113, thereby preventing the control valve opening and closing mechanism 1 from failing.

In an embodiment, as shown in fig. 1 to 4, the control valve opening and closing mechanism 1 further includes a center adjusting assembly 16, which includes a universal center adjusting bracket 161 and a center adjusting base 162, the universal center adjusting bracket 161 is connected to the circumferential surface of the annular main body 111 and is located at a side far away from the elliptical groove 1131, and the center adjusting base 162 is installed on the universal center adjusting bracket 161 and is used in cooperation with the universal center adjusting bracket 161.

Specifically, the centering assembly 16 can support the valve flap 11 to reduce the vibration when the valve flap 11 performs the centering motion and rotates, so that the valve flap 11 performs the centering motion and rotates more stably.

The embodiment of the utility model discloses a control valve opening and closing mechanism 1, as shown in 1-4, through setting up first antifriction bearing 12 and eccentric main shaft 13, and set up the oval recess 1131 that uses with first antifriction bearing 12 bearing cooperation on valve clack 11, rotatory eccentric main shaft 13 drives first antifriction bearing 12 and rotates and swings in oval recess 1131 internal rotation, so that first antifriction bearing 12 extrudes the cell wall of oval recess 1131, and then make valve clack 11 move before rotating, after valve clack 11 rotates and resets, reverse rotation eccentric main shaft 13 drives first antifriction bearing 12 and rotates and swings in oval recess 1131, so that first antifriction bearing 12 extrudes the cell wall of oval recess 1131, and then make valve clack 11 move, until spherical crown shaped sealing surface 112 and seal valve seat 21 butt, because spherical crown shaped sealing surface 112 separates with seal valve seat 21 when valve clack rotates, can not produce the friction, thereby greatly increasing the service life of the control valve. And because the control valve opening and closing mechanism can not generate friction when opening and closing, the torque required by opening and closing is low, the damage to the eccentric main shaft 13 caused by large torque is avoided, the power consumption of an external electric actuating mechanism is reduced, and the explosion-proof safety of the control valve can be greatly improved.

The utility model provides a second kind of control valve starting and stopping mechanism for switch on or cut off valve body 2, including eccentric main shaft 13, valve clack 11, driving part and follower. The valve flap 11 comprises an annular main body 111 and a spherical crown-shaped sealing surface 112, wherein the middle part of the annular main body 111 is provided with a first channel 1111 for conducting the valve body 2, and the spherical crown-shaped sealing surface 112 is arranged on the peripheral surface of the annular main body 111 and used for cutting off the valve body 2. The driving part is connected with the eccentric main shaft 13, and the driven part is arranged on the circumferential surface of the annular main body 111, wherein the driving part is driven to do eccentric motion by rotating the eccentric main shaft 13, so that the driving part is matched with the driven part, and the valve clack 11 is driven to move.

Specifically, the driving member includes, but is not limited to, the first rolling bearing 12 of the above embodiment, and the driven member includes, but is not limited to, the elliptical groove 1131 of the above embodiment.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations should fall within the scope of the appended claims.

Claims (10)

1. A control valve opening and closing mechanism for opening or closing a valve body, comprising:

the valve clack comprises an annular main body and a spherical crown-shaped sealing surface, wherein a first channel for conducting a valve body is arranged in the middle of the annular main body, the spherical crown-shaped sealing surface is arranged on the peripheral surface of the annular main body, a first boss is arranged on the peripheral surface of the annular main body, and an oval groove is formed in the middle of the first boss;

the first rolling bearing is arranged in the oval groove and is abutted against the groove wall of the oval groove;

and the eccentric main shaft is connected with the first rolling bearing shaft, and the first rolling bearing can be driven to rotate and swing in the elliptical groove by rotating the eccentric main shaft so as to enable the valve clack to move.

2. The opening and closing mechanism of a control valve according to claim 1, wherein the eccentric spindle includes a rotation control rod connected between two ends of the eccentric spindle and extending in a radial direction away from the eccentric spindle, the valve flap further includes a rotation control step provided on the first boss, and when the eccentric spindle rotates by a predetermined angle, the rotation control rod is driven to rotate so that the rotation control rod abuts against the rotation control step.

3. The opening and closing mechanism of a control valve according to claim 2, further comprising a torsion spring sleeved on the valve flap, wherein the center line of the oval groove is parallel to the center line of the torsion spring, one end of the torsion spring is abutted against the valve flap, and the other end of the torsion spring is abutted against the valve body, so that the torsion spring stores energy when the control valve is opened and releases energy when the control valve is closed.

4. The control valve opening and closing mechanism of claim 3, wherein the valve flap further comprises a first quick-closing valve power-assisted torsion spring mounting member connected to the annular main body, the first quick-closing valve power-assisted torsion spring mounting member is disposed adjacent to the first boss, the torsion spring is sleeved on the outer wall of the first boss, and one end of the torsion spring abuts against the first quick-closing valve power-assisted torsion spring mounting member.

5. The control valve opening and closing mechanism of claim 3, wherein the valve flap further comprises:

the second boss is arranged on the peripheral surface of the annular main body and is positioned on one side far away from the oval groove;

the second fast valve helping hand torsional spring installed part of closing, its with the annular main part is connected, is located and keeps away from one side of oval recess, and with the second boss is adjacent and the interval sets up, the torsional spring cover is located second boss outer wall, torsional spring one end with the second fast valve helping hand torsional spring installed part butt of closing.

6. The opening and closing mechanism of a control valve according to any one of claims 1 to 5, wherein: the valve flap comprises: the control valve opening and closing mechanism comprises an opening limiting step and a closing limiting step, wherein the opening limiting step and the closing limiting step are arranged on the peripheral surface of the annular main body and located on one side far away from the oval groove, when the control valve opening and closing mechanism is opened, the opening limiting step is used for abutting against the valve body, the first channel is consistent with the pipeline drift diameter of the valve body, when the control valve opening and closing mechanism is closed, the closing limiting step is used for abutting against the valve body, and the spherical crown-shaped sealing surface faces towards the sealing valve seat of the valve body.

7. The control valve opening and closing mechanism according to claim 4, wherein the first rolling bearing is completely accommodated in the elliptical groove, the control valve opening and closing mechanism further comprises a cover plate, a second through hole for the eccentric main shaft to pass through is formed in the middle of the cover plate, and the cover plate is covered on one side of the first boss far away from the first channel so as to shield the elliptical groove.

8. The control valve opening and closing mechanism according to claim 7, wherein: at least part of the outer contour of the cover plate is larger than the inner contour of the torsion spring.

9. The control valve opening and closing mechanism according to claim 6, further comprising a centering assembly including a universal centering bracket and a centering base, wherein the universal centering bracket is connected with the circumferential surface of the annular main body and located at one side away from the elliptical groove, and the centering base is mounted on the universal centering bracket and used in cooperation with the universal centering bracket.

10. A control valve opening and closing mechanism for opening or closing a valve body, comprising:

an eccentric main shaft;

the valve clack comprises an annular main body and a spherical crown-shaped sealing surface, a first channel for conducting the valve body is arranged in the middle of the annular main body, and the spherical crown-shaped sealing surface is arranged on the peripheral surface of the annular main body and used for cutting off the valve body;

the driving part is connected with the eccentric main shaft;

the driven part is arranged on the circumferential surface of the annular main body;

and the eccentric main shaft is rotated to drive the driving part to do eccentric motion, so that the driving part is matched with the driven part, and the valve clack is driven to move.

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