CN208311524U - Novel stop valve - Google Patents

Abstract

The utility model discloses a kind of Novel stop valves, including valve body and valve deck, valve body is equipped with support base, the bottom of spool is connected on support base, spool includes an annulus and the circular closure that is adapted to seal valve seat, and valve rod is equipped in valve deck, and the lower end of valve rod is connect by the upper and lower torsional that intercalation connects with spool, the side of upper torsional is equipped with convex block, and spool is equipped with preceding pressure spacer pin and the compression spring for valve core reset.There is the utility model the contact surface between spool and seal valve seat to fix, and sealing structure wears the feature that small, sealing performance is stable and structure is simple, have very high practical value.

Description

Novel stop valve

Technical field

The utility model relates to valve technology fields, and in particular to sealing performance is stable after a kind of shutdown and structure is simple A kind of Novel stop valve.

Background technique

Ball valve is a kind of flow controller being usually used on pipeline, and common ball valve includes valve body, is equipped with spool in valve body, Seal valve seat is equipped at the access of valve body and spool cooperation, spool is generally spherical shape, and through-hole is opened up on spool is used as perforation side, with It is separated by 90 degree of spool spherical surface on through hole circumference to block side, when perforation side is aligned with seal valve seat, ball valve is connected, valve ball Face blocks side and is aligned then ball valve closure with seal valve seat.Control of the ball valve in the direction setting perforation valve body vertical with block channels Device, for the rotation of control valve core.In traditional ball valve, spool will keep excellent sealing with seal valve seat, it is necessary to rely on Closely contact, thus spool during rotation needed for torsion it is very big, rotation friction is very between spool and seal valve seat Greatly, sealing structure is prone to wear and causes seal failure.Publication date is September in 2015 30, Publication No. CN 204677800U Chinese patent literature disclose it is a kind of adaptation any angle installation ball-valve structure set in valve body including the valve body with access There is spool, is equipped with seal valve seat at the access of valve body and spool cooperation, it is characterised in that: the valve body turns equipped with control valve core Dynamic control device is additionally provided with support base on the inner wall of the valve body, and the control device and support base are coaxially disposed and distinguish The two sides up and down of spool are supported, the control device is vertical with the access of valve body with the axis of support base, and the spool main body is The annulus of one both ends of the surface perforation, control device and support base are separately connected the upper side and lower side of support annulus, and annulus side is equipped with The circular closure being adapted to seal valve seat, the axis of annulus and the axis of circular closure are mutually perpendicular to, the both ends of the perforation of annulus For the perforation side of spool, circular closure is the closure side of spool.The ball valve adapts to various angle installations, solves existing ball valve The problem of positioning of spool unilateral side is not suitable for vertically-mounted use.But the valve rod of the ball valve is squeezed by 7 blocks of lifting to be arranged in valve Two rollers on core push spool to achieve the purpose that unlatching or sealing, and not only structure is complicated, and its 7 word after working long hours The elevating drive mechanism of block is easy to appear abrasion, and then influences the control precision of valve.

Utility model content

The utility model is that rotation friction is big between its spool of ball valve and seal valve seat of the solution prior art, sealing knot Structure is prone to wear the problem of failure, provides a kind of Novel stop valve, and there is the contact surface between spool and seal valve seat to fix, close Seal structure wears the feature that small, sealing performance is stable and structure is simple.

The utility model technical solution used for the above purpose is a kind of Novel stop valve, including band access Valve body, spool is equipped in valve body, the valve body above spool is equipped with valve deck, the inlet side of valve body be equipped with cooperate with spool it is close Valve seat is sealed, the opposite side on the valve body with valve deck is equipped with support base, and the bottom of the spool is connected on support base, Spool includes an annulus, and the one side of annulus is equipped with the circular closure being adapted to seal valve seat, is equipped in valve deck for controlling The valve rod of valve core rotation, the lower end of the valve rod are equipped with upper torsional, and the top of annulus is equipped with a platform, and platform is equipped with recessed Slot, is equipped with lower torsional in groove, and for upper torsional deflectablely with lower torsional grafting, the side of upper torsional is equipped with convex block, It is equipped with preceding pressure spacer pin close to circular closure side on platform, between groove inner wall and lower torsional far from circular closure side Equipped with compression spring.The spool of the utility model includes two annulus and the circular closure that annulus side is arranged in, the bottom of annulus It is connected on support base, the upper end of annulus is connect by the upper and lower torsional of deflectable grafting with valve rod.In valve opening state Under, when valve rod rotates, valve rod drives valve core rotation by the upper and lower torsional that intercalation connects, when valve core rotation to circular closure When opposite with seal valve seat, spool stops operating in place, due to there is certain deflectable angle between upper and lower torsional, In the angular range, there is no power transmitting (i.e. upper torsional dally relative to lower torsional) between upper and lower torsional, therefore Valve rod can drive torsional to continue to rotate, and the convex block of upper torsional side squeezes the preceding pressure spacer pin on platform, so that circle Ring is using bottom supporting point as one side oscillation of axial seal valve seat, so that circular closure be made to be close to seal valve seat, reaches sealing cutting The purpose of fluid.When the valve opening of off state, valve rod, which drives upper torsional to rotate backward, makes the convex of torsional side Block presses spacer pin before being detached from, at this time spool backswing under the elastic force effect of compression spring, circular closure and seal valve seat it Between unclamp, valve rod continues to drive torsional to rotate, when the deflectable angle between upper and lower torsional disappears, upper torsional with Power transmitting is realized between lower torsional, upper torsional drives valve core rotation, valve opening by lower torsional.The utility model Valve core rotation when and seal valve seat between do not rub, therefore the abrasion very little of spool and sealing structure；Circular closure with it is close Arm of force when being sealed, and compressed by compression mode between envelope valve seat is longer therefore relatively low to the torque requiremnt of valve rod, this Sample, the utility model solve between the ball valve core of the prior art and seal valve seat that rotation friction is big, and sealing structure is easy The problem of wear-out failure.There is the utility model the contact surface between spool and seal valve seat to fix, and sealing structure abrasion is small, close The feature that sealing property is stable and structure is simple.

Preferably, the lower part of upper torsional and the top of lower torsional are equipped with eccentric block, upper and lower torsional passes through core Axis grafting, in fan annular, the central angle for fanning annular is 150 to 160 degree for the eccentric block cross section.The utility model uses two The mode of eccentric block grafting realizes the transmitting of the power between torsional and lower torsional and opposite deflection, here the eccentric block center of circle Angle is 150 to 160 degree, then upper torsional is the sum of the central angle of two eccentric blocks relative to the free deflection angle of lower torsional With the difference between 360 degree, i.e., upper torsional is 40 to 60 degree relative to the free deflection angle of lower torsional, be can satisfy The deflection requirement of torsional.

Preferably, be arranged with the torque spring for upper torsion block reset on mandrel, upper torsional and lower torsional It is all provided with jagged on eccentric block, the both ends of torque spring are fastened on respectively in the notch of torsional and lower torsional.Torsion bullet Spring is used for the reset after upper torsional deflects, it is ensured that upper torsional drives lower torsional rotation in time when valve opening, mentions The control precision of high valve.

Preferably, stating the axis square crossing of the axis and annulus of circular closure and the axis of circular closure is located at annulus Center anchor ring on.

Preferably, the bottom of spool is connected on support base by a ball-and-socket hinge device, the ball-and-socket hinge device setting exists The bottom of annulus, the valve rod and support base are on the same axis.Ball-and-socket hinge device can make spool while can rotate and put It is dynamic.

Preferably, being extended with positioning plate, the seal valve seat of the valve body import side close to circular closure side on platform Top is equipped with limited block, and when stop valve is closed, the positioning plate is abutted with limited block.Positioning plate cooperates with limited block for limiting The final position of valve core rotation, it is ensured that circular closure when valve is closed on spool is directed at seal valve seat.

Preferably, circular closure outer diameter is gradually reduced composition spherical structure to the other side from the side close to annulus, circle Sealing ring is equipped between the spherical structure and seal valve seat of shape capping.

The beneficial effects of the utility model are: it is efficiently solved between the ball valve core of the prior art and seal valve seat The problem of rotation friction is big, and sealing structure is prone to wear failure, the utility model have connecing between spool and seal valve seat Contacting surface is fixed, and sealing structure wears the feature that small, sealing performance is stable and structure is simple, has very high practical value.

Detailed description of the invention

Fig. 1 is a kind of schematic cross-sectional view before the utility model stop valve is closed；

Fig. 2 is the partial top view of Fig. 1；

Fig. 3 is a kind of schematic cross-sectional view of Fig. 2；

Fig. 4 is a kind of schematic cross-sectional view when the utility model stop valve is closed；

Fig. 5 is the partial top view of Fig. 4；

Fig. 6 is a kind of schematic cross-sectional view of Fig. 5；

Fig. 7 is a kind of schematic cross-sectional view when the utility model stop valve is opened；

Fig. 8 is a kind of exploded structural schematic diagram of the utility model stop valve.

In figure: 1. valve bodies, 2. valve decks, 3. imports, 4. seal valve seats, 5. support bases, 6. annulus, 7. circular closure, 8. valves Bar, torsional on 9., 10. platforms, 11. grooves, 12. lower torsionals, 13. convex blocks press spacer pin before 14., 15. compression springs, 16. eccentric block, 17. mandrels, 18. torque springs, 19. notches, 20. ball-and-socket hinge devices, 21. positioning plates, 22. limited blocks, 23. go out Mouthful.

Specific embodiment

Below with reference to the embodiments and with reference to the accompanying drawing being more specifically described to the technical solution of the utility model.

Embodiment 1

In embodiment 1 shown in Fig. 1, a kind of Novel stop valve is equipped with spool in valve body including the valve body 1 with access, Valve body above spool is equipped with valve deck 2, and the both ends of valve body are respectively set import 3 and outlet 23, the inlet side of valve body be equipped with The seal valve seat 4 of spool cooperation, the opposite side on the valve body with valve deck are equipped with support base 5, and the bottom of the spool is logical A ball-and-socket hinge device 20 is crossed to be connected on support base.Spool includes an annulus 6, and the bottom of annulus is arranged in the ball-and-socket hinge device Portion.The one side of annulus is equipped with the circular closure 7 that is adapted to seal valve seat, the axis of the circular closure and axis of annulus is vertical hands over The fork and axis of circular closure is located on the center anchor ring of annulus, circular closure outer diameter from a side of close annulus to the other side by Decrescence small composition spherical structure is equipped with sealing ring between the spherical structure and seal valve seat of circular closure.It is equipped with and is used in valve deck The valve rod 8 of control valve core rotation, on the same axis, the lower end of valve rod is equipped with upper torsional 9 for the valve rod and support base. The top of annulus is equipped with a platform 10, and platform is equipped with groove 11(and sees Fig. 3), groove is interior to be equipped with lower torsional 12, upper torsional Lower part and the top of lower torsional be equipped with eccentric block 16, the central angle of annular is fanned in fan annular in the eccentric block cross section For 150 to 160 degree (eccentric block its central angle on the present embodiment on torsional be 160 degree, the eccentric block on lower torsional its justify Heart angle is 150 degree)；Upper and lower torsional passes through 17 grafting of mandrel, and the torque spring for upper torsion block reset is arranged on mandrel 18, jagged 19 are all provided on the eccentric block of upper torsional and lower torsional, and the both ends of torque spring are fastened on torsional respectively With (see figure 8) in the notch of lower torsional.

The side of upper torsional is equipped with convex block 13(and sees Fig. 2), preceding pressure spacer pin is equipped with close to circular closure side on platform 14, compression spring 15 is equipped between groove inner wall and lower torsional far from circular closure side.Close to circular closure on platform Side is extended with positioning plate 21, and limited block 22 is equipped with above the seal valve seat of the valve body import side, described when stop valve is closed Positioning plate is abutted with limited block.

The course of work of the utility model is as follows: the (see figure 7) under valve opening state, and when valve rod rotates, valve rod passes through Upper torsional, lower torsional drive valve core rotation, when valve core rotation to circular closure is opposite with seal valve seat, positioning plate and limit Position block abuts, and spool stops operating in place, due to upper torsional relative to lower torsional there are the deflectable angle of 40-60 degree, Therefore valve rod can drive torsional to continue to rotate, and the convex block of upper torsional side is by squeezing the preceding pressure limit on platform at this time Position pin (see Fig. 5 Fig. 6), so that spool is using bottom supporting point as one side oscillation of axial seal valve seat, so that circular closure be made to be close to Seal valve seat (see figure 4) achievees the purpose that sealing cutting fluid.When the valve opening of off state, valve rod drives upper torsion Block rotates backward before being detached from the convex block of torsional side and presses spacer pin, and spool is anti-under the elastic force effect of compression spring at this time It to swing, is unclamped between circular closure and seal valve seat, valve rod continues that torsional is driven to rotate, when between upper and lower torsional Deflectable angle disappear, power transmitting is realized between upper torsional and lower torsional, upper torsional driven by lower torsional Valve core rotation, valve opening.

It does not rub between seal valve seat when the valve core rotation of the utility model, therefore the abrasion of spool and sealing structure Very little；Arm of force when being sealed, and compressed by compression mode between circular closure and seal valve seat is longer, therefore the torsion to valve rod Force request is relatively low, in this way, the utility model solves pivoting friction between the ball valve core of the prior art and seal valve seat The problem of power is big, and sealing structure is prone to wear failure.There is the utility model the contact surface between spool and seal valve seat to fix, Sealing structure wears the feature that small, sealing performance is stable and structure is simple.

In addition to the implementation, in the range disclosed in claims of the utility model and specification, this is practical Novel technical characteristic or technical data can be reselected and be combined, to constitute new embodiment, these are all these Field technical staff is without carrying out what creative work can be realized, therefore the implementation that these the utility model are not described in Example also should be regarded as specific embodiment of the utility model and be within the protection scope of the utility model.

Claims (7)

1. a kind of Novel stop valve is equipped with spool including the valve body (1) with access in valve body, the valve body above spool is equipped with Valve deck (2), import (3) side of valve body are equipped with the seal valve seat (4) cooperated with spool, it is characterised in that: on the valve body with valve The opposite side of lid is equipped with support base (5), and the bottom of the spool is connected on support base, and spool includes an annulus (6), the one side of annulus is equipped with the circular closure (7) being adapted to seal valve seat, is equipped in valve deck for control valve core rotation The lower end of valve rod (8), the valve rod is equipped with upper torsional (9), and the top of annulus is equipped with a platform (10), and platform is equipped with recessed Slot (11), groove is interior to be equipped with lower torsional (12), and deflectablely with lower torsional grafting, the side of upper torsional is set upper torsional Have convex block (13), be equipped with preceding pressure spacer pin (14) close to circular closure side on platform, in the groove far from circular closure side Compression spring (15) are equipped between wall and lower torsional.

2. Novel stop valve according to claim 1, it is characterised in that the lower part of the upper torsional and lower torsional Top is equipped with eccentric block (16), and upper and lower torsional is by mandrel (17) grafting, and the eccentric block cross section is in fan annular, fan The central angle of annular is 150 to 160 degree.

3. Novel stop valve according to claim 2, it is characterised in that be arranged on the mandrel multiple for upper torsional It is all provided with jagged (19) on the eccentric block of the torque spring (18) of position, upper torsional and lower torsional, the both ends point of torque spring It is not fastened in the notch of torsional and lower torsional.

4. Novel stop valve according to claim 1, it is characterised in that the axis of the circular closure and the axis of annulus The axis of square crossing and circular closure is located on the center anchor ring of annulus.

5. Novel stop valve according to claim 1, it is characterised in that the bottom of the spool passes through a ball-and-socket hinge device (20) it is connected on support base, the bottom of annulus is arranged in the ball-and-socket hinge device, and the valve rod and support base are in same axis On line.

6. Novel stop valve according to claim 1, it is characterised in that extend on the platform close to circular closure side Have positioning plate (21), is equipped with limited block (22) above the seal valve seat of the valve body import side, when stop valve is closed, the positioning Plate is abutted with limited block.

7. Novel stop valve according to claim 1-6, it is characterised in that circular closure outer diameter is from close to annulus A side be gradually reduced composition spherical structure to the other side, between the spherical structure and seal valve seat of circular closure be equipped with sealing Circle.