CN216382655U

CN216382655U - Control cut-off valve convenient to installation executor

Info

Publication number: CN216382655U
Application number: CN202122843189.9U
Authority: CN
Inventors: 李永安; 杨伟良; 何武财
Original assignee: Zhejiang Zixin Automation Equipment Co ltd
Current assignee: Zhejiang Zixin Automation Equipment Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-26
Anticipated expiration: 2031-11-19

Abstract

The application relates to a control trip valve convenient to installation executor, it includes the valve body, install the disk seat in the valve body, install the valve ball in the disk seat, the valve shaft of being connected with the valve ball and the pneumatic actuator who is connected with the disk seat through the support, the output shaft and the valve shaft of pneumatic actuator are connected, its characterized in that: the inner surface of the support is provided with a packing gland, a clearance groove is formed between the packing gland and the valve body, a sealing packing ring is installed in the clearance groove, the packing gland is connected with the support through bolts and nuts, a spring pad is arranged between the packing gland and the support, and the spring pad is sleeved outside the bolts. This application has long service life, sealed effectual effect.

Description

Control cut-off valve convenient to installation executor

Technical Field

The application relates to the technical field of valves, in particular to a control stop valve convenient for mounting an actuator.

Background

The control cut-off valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, paper making, pharmacy, water conservancy, electric power, municipal administration, steel and the like, plays a very important role in national economy, has the action of rotating by ninety degrees, has a plug body which is a sphere and a circular through hole or a channel passing through the axis of the plug body, is mainly used for cutting off, distributing and changing the flowing direction of a medium in a pipeline, can be closed tightly only by rotating by ninety degrees and a small rotating torque, and is most suitable for being used as a switch and a cut-off valve.

The pneumatic device for driving the valve rod to rotate is arranged outside the cut-off valve, and the pneumatic device drives the ball body to rotate under the action of high-pressure gas provided by the gas source through the valve rod so as to enable the ball valve to be switched between opening and closing.

The existing ball valve is easy to deform and wear due to rotation of a valve shaft in the using process, and after the sealing filler is worn, the sealing filler cannot be automatically compensated, so that the sealing performance is reduced, the service life of the ball valve is short, the wear of a wear surface of the ball valve is serious, and the service life of the valve is short.

Disclosure of Invention

The application provides a control trip valve convenient to installation executor has long service life, sealed effectual effect.

The application provides a control trip valve convenient to installation executor adopts following technical scheme:

the utility model provides a control trip valve convenient to installation executor, includes the valve body, installs the disk seat in the valve body, installs the valve ball in the disk seat, the valve shaft of being connected with the valve ball and the pneumatic actuator who is connected through support and disk seat, pneumatic actuator's output shaft with the valve shaft is connected the internal surface of support is provided with gland, be formed with the clearance groove between gland and the valve body install the sealing packing ring in the clearance groove, be connected through bolt and nut between gland and the support, just be provided with the spring packing between gland and the support, the spring packing cover is located the bolt is arranged outward.

Preferably, the valve shaft has a ring groove formed on an outer circumferential surface thereof, and a seal ring is disposed in the ring groove.

Preferably, a collar is provided on the outer circumferential surface of the valve shaft, between which collar and valve body a thrust washer is provided.

Preferably, the packing ring is a PTFE ring.

Preferably, the pneumatic actuator is provided with a filter pressure reducing valve.

Preferably, the pneumatic actuator is provided with a limit switch.

Preferably, the pneumatic actuator is provided with a solenoid valve.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sealing packing ring is arranged in the clearance groove, and the spring pad is arranged on the bolt between the packing gland and the bracket, so that the sealing packing ring generates corresponding deformation and is matched with the spring pad, the automatic compensation effect of the cut-off valve is realized, and after the sealing packing ring is worn, the packing gland always presses the sealing packing ring under the pressure action of the bolt, the nut and the spring pad, so that the sealing performance of the control valve is ensured, and the effects of long service life and good sealing effect are achieved;

2. the ring groove is formed in the outer circumferential surface of the valve shaft, and the sealing ring is arranged in the ring groove, so that the sealing effect of the valve body is improved when the valve shaft rotates;

3. the pneumatic actuator is provided with the filtering pressure reducing valve, the limit switch and the electromagnetic valve, and the limit switch is operated to realize the quick control on the on-off function of the stop valve by the pneumatic actuator.

Drawings

FIG. 1 is a cross-sectional view of a control shut-off valve that facilitates installation of an actuator;

FIG. 2 is a cross-sectional view of the control shut-off valve;

FIG. 3 is a partial cross-sectional view of the control shut-off valve.

Description of reference numerals: 1. a valve body; 2. a valve seat; 3. a valve ball; 4. a valve shaft; 41. a ring groove; 42. a convex ring; 5. a support; 6. a pneumatic actuator; 7. a packing gland; 8. a spring pad; 9. a bolt; 10. a nut; 11. a clearance groove; 12. a packing ring is sealed; 13. a seal ring; 14. a thrust washer; 15. a filtering pressure reducing valve; 16. a limit switch; 17. an electromagnetic valve.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses control trip valve convenient to installation executor.

Referring to fig. 1, the control cut-off valve convenient for mounting the actuator comprises a valve body 1, a valve seat 2 mounted in the valve body 1, a valve ball 3 mounted in the valve seat 2, a valve shaft 4 connected with the valve ball 3, and a pneumatic actuator 6 connected with the valve seat 2 through a bracket 5, wherein an output shaft of the pneumatic actuator 6 is connected with the valve shaft 4.

Referring to fig. 2 and 3, a packing gland 7 is arranged on the inner surface of the bracket 5, a spring washer 8 is arranged between the packing gland 7 and the bracket 5, the packing gland 7 is connected with the bracket 5 through a bolt 9 and a nut 10, and the spring washer 8 is sleeved outside the bolt 9; the fixed connection between the packing gland 7 and the valve body 1 is realized.

Referring to fig. 2 and 3, a clearance groove 11 is formed between the packing gland 7 and the valve body 1, a packing ring 12 is installed in the clearance groove 11, and the packing ring 12 is a PTFE ring. Meanwhile, a ring groove 41 is formed in the outer circumferential surface of the valve shaft 4, and a seal ring 13 is provided in the ring groove 41.

Referring to fig. 2 and 3, a collar 42 is provided on the outer circumferential surface of the valve shaft 4, and a thrust washer 14 is provided between the collar 42 and the valve body 1.

Referring to fig. 1 and 2, the pneumatic actuator 6 is provided with a filtering and pressure reducing valve 15, a limit switch 16 and an electromagnetic valve 17; the opening and closing of the cut-off valve can be quickly controlled by the pneumatic actuator 6 by operating the limit switch 16.

The implementation principle is as follows: a clearance groove 11 is formed between the packing gland 7 and the valve body 1, a sealing packing ring 12 is installed in the clearance groove 11, and a spring pad 8 is arranged on a bolt 9 between the packing gland 7 and the support 5, so that the sealing packing ring 12 is correspondingly deformed and is matched with the spring pad 8, the automatic compensation effect of the cut-off valve is realized, after the sealing packing ring 12 is worn, the packing gland 7 always presses the sealing packing ring 12 under the pressure effect of a nut 10 of the bolt 9 and the spring pad 8, and the sealing performance of the control valve is ensured; meanwhile, a convex ring 42 is arranged on the outer circumferential surface of the valve shaft 4, and a thrust gasket 14 is arranged between the convex ring 42 and the valve body 1, so that the operation stability of the control valve is improved; the wear-resistant layer is arranged on the surface of the inner cavity of the valve body 1, the valve seat 2, the valve ball 3 and the valve shaft 4 in the same way, and the wear-resistant valve has the advantages of long service life, good sealing effect, wear resistance and corrosion resistance.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a control trip valve convenient to installation executor, includes valve body (1), installs disk seat (2) in valve body (1), installs valve ball (3) in disk seat (2), valve shaft (4) be connected with valve ball (3) and pneumatic actuator (6) be connected with disk seat (2) through support (5), the output shaft of pneumatic actuator (6) with valve shaft (4) are connected, its characterized in that: the inner surface of support (5) is provided with gland (7), be formed with clearance groove (11) between gland (7) and valve body (1) install sealing packing ring (12) in clearance groove (11), be connected through bolt (9) nut (10) between gland (7) and support (5), and be provided with spring pad (8) between gland (7) and support (5), spring pad (8) cover is located bolt (9) are arranged outward.

2. A controlled shut off valve to facilitate installation of an actuator as defined in claim 1 wherein: an annular groove (41) is formed in the outer circumferential surface of the valve shaft (4), and a sealing ring (13) is arranged in the annular groove (41).

3. A controlled shut off valve to facilitate installation of an actuator as defined in claim 1 wherein: a collar (42) is arranged on the outer circumferential surface of the valve spindle (4), and a thrust washer (14) is arranged between the collar (42) and the valve body (1).

4. A controlled shut off valve to facilitate installation of an actuator as defined in claim 1 wherein: the sealing packing ring (12) is a PTFE ring.

5. A controlled shut off valve to facilitate installation of an actuator as defined in claim 1 wherein: and the pneumatic actuator (6) is provided with a filtering and pressure reducing valve (15).

6. A controlled shut off valve to facilitate installation of an actuator as defined in claim 1 wherein: and the pneumatic actuator (6) is provided with a limit switch (16).

7. A controlled shut off valve to facilitate installation of an actuator as defined in claim 1 wherein: the pneumatic actuator (6) is provided with an electromagnetic valve (17).