CN216519714U

CN216519714U - Two-piece type cast steel fixed ball valve in fine chemical industry

Info

Publication number: CN216519714U
Application number: CN202122877671.4U
Authority: CN
Inventors: 赵越
Original assignee: SUZHOU SIP STARD VALVE CO Ltd
Current assignee: SUZHOU SIP STARD VALVE CO Ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-05-13
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a two-piece cast steel fixed ball valve in the fine chemical industry, which belongs to the field of fine ball valves and comprises a valve body, wherein a valve cover is fixed at the left end of the valve body through a first nut, a metal valve seat is arranged on the inner surface of the valve cover, a valve seat filler and a second disc spring are respectively arranged between the metal valve seat and the valve cover, a graphite valve seat is arranged on the inner surface of the metal valve seat, a ball body is rotatably sleeved on the inner surface of the graphite valve seat, a support plate is fixedly connected to the inner surface of the valve body, and a first bearing is slidably connected to the other side of the support plate. This two formula cast steel fixed ball valves can reduce the moment of torsion that opens and shuts of ball valve, has improved the efficiency that opens and shuts of ball valve, and the valve rod accords with the requirement of preventing blowing off simultaneously for the ball valve can be applied to the high-pressure gas medium, has enlarged the range of application of ball valve, and can be abundant prevent the leakage of medium, has optimized the leakproofness of ball valve, has improved the security of ball valve simultaneously.

Description

Two-piece type cast steel fixed ball valve in fine chemical industry

Technical Field

The utility model relates to the field of fine ball valves, in particular to a two-piece type cast steel fixed ball valve in the fine chemical industry.

Background

With the development of the fine chemical industry, the demand for the valve is also improved, which becomes a new growth point of the valve market, however, the common soft seal valve and the hard seal valve have poor air tightness, large torque and small caliber, and cannot meet the requirements of the valve market, the existing domestic two-piece cast steel soft seal fixed ball valve has relatively poor satisfaction for the fine chemical industry, and cannot meet the requirements of customers, so that the design research and development of the two-piece cast steel fixed ball valve suitable for the fine chemical industry are carried out by a company for meeting new requirements of customers;

general two formula cast steel fixed ball valves on market do not have the scour protection and go out the design, thereby can't be applied to the high-pressure gas medium, the range of application of ball valve has been reduced, the moment of torsion that opens and shuts of ball valve is great simultaneously, the efficiency that opens and shuts of ball valve has been reduced, and general two formula cast steel fixed ball valve is in a plurality of places that easily take place to leak, compound seal structure has not been taken, the leakproofness is relatively poor, thereby the security of ball valve has been reduced, the problem of device defect has been brought, for this reason, we provide a two formula cast steel fixed ball valve of fine chemical industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a two-piece type cast steel fixed ball valve in the fine chemical industry, which solves the problems that the common two-piece type cast steel fixed ball valve in the background technology is not provided with an anti-ejection design, so that the common two-piece type cast steel fixed ball valve cannot be applied to high-pressure gas media, the application range of the ball valve is reduced, the opening and closing torque of the ball valve is large, the opening and closing efficiency of the ball valve is reduced, and the common two-piece type cast steel fixed ball valve is not provided with a composite sealing structure in a plurality of places where leakage is easy to occur, the sealing performance is poor, so that the safety of the ball valve is reduced, and the device defects are caused.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a two formula cast steel fixed ball valves of fine chemical industry, includes the valve body, the left end of valve body passes through nut one fixed valve gap, the internal surface mounting of valve gap has the metal disk seat, be provided with disk seat filler and dish spring two between metal disk seat and the valve gap respectively, and the internal surface mounting of metal disk seat has the graphite disk seat, the internal surface rotation of graphite disk seat has cup jointed the spheroid, the rigid coupling has the backup pad on the internal surface of valve body, the opposite side sliding connection of backup pad has bearing one.

Preferably, the first bearing is fixedly connected with the ball body, the second disc spring is positioned above the valve seat filler, and the support plate and the first bearing are respectively and symmetrically arranged relative to the ball body.

Preferably, the fixed valve rod that has cup jointed of spheroidal top surface, be provided with between valve rod and the spheroid and prevent static spring one, and the other end of valve rod is connected with the gear box through the parallel key, the bottom surface rigid coupling of gear box has the support, the rigid coupling has the stuffing box between support and the valve body, it has the valve rod low leakage to pack to fill between stuffing box and the valve rod, the top surface contact of the valve rod low leakage packing is connected with presses the cover, the top surface contact of pressing the cover is connected with the clamp plate, the double-screw bolt has been cup jointed in the clamp plate internal gearing, the top meshing of double-screw bolt has cup jointed nut two, the bottom surface contact of nut two is connected with the gasket, be provided with dish spring one between gasket and the clamp plate.

Preferably, the outer fixed surface of valve rod has cup jointed bearing two, bearing two rotates with the roof of valve body and cup joints, install on the lateral wall of valve rod and prevent static spring two, the other end rigid coupling of preventing static spring two has prevents the static bobble.

Preferably, the stud is respectively meshed and sleeved with the support and the stuffing box, and the gasket and the disc spring I are both slidably sleeved with the stud.

Preferably, the stud drives the pressing plate and the pressing sleeve to move through the second nut, the spacer and the disc spring.

Compared with the prior art, the utility model has the beneficial effects that:

the two-piece type cast steel fixed ball valve can complete torque conversion by controlling the gear box by a single person, and the valve rod and the ball body are driven to rotate through the flat key, so that the purpose of reducing the opening and closing torque of the ball valve is achieved, the opening and closing efficiency of the ball valve is improved, meanwhile, the first bearing is designed at the ball body and the supporting plate, the friction torque between the ball body and the supporting plate can be reduced, the valve rod is stable and flexible to operate for a long time, the service life of the valve is prolonged, the stepped structure design of the valve rod can be positioned by the packing box, the blowout prevention requirement of the valve rod can be completely met, the ball valve can be applied to high-pressure gas media, and the application range of the ball valve is expanded;

this two-piece formula cast steel fixed ball valve is through pressing the cover, the clamp plate, dish spring one, the gasket, double-screw bolt and nut two continuously push down valve rod low leakage filler, can ensure the sealing effect on valve body top, avoid the leakage of medium, and spheroid and metal disk seat department are provided with the graphite disk seat, it adopts metal seal and special processing technology, when meeting with the conflagration, graphite disk seat and disk seat filler can realize the sealing effect, avoid the leakage of medium, the design of compound seal structure has been taken, thereby reach the purpose of fully preventing leaking, the leakproofness of ball valve has been optimized, simultaneously set up between spheroid and valve rod and prevent static spring one, set up between valve rod and gland packing box and prevent static spring two and prevent static bobble, can avoid static to strike sparks and ignite inflammable medium, special operating safety has been ensured, the security of ball valve has been improved.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of the present invention;

FIG. 2 is a schematic view of a portion of the structure of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a sphere; 4. a valve stem; 5. a support plate; 6. a stuffing box; 7. a support; 8. a metal valve seat; 9. a graphite valve seat; 11. a first nut; 15. valve seat packing; 17. a disc spring II; 18. the valve rod has low leakage packing; 24. a first bearing; 26. a second bearing; 28. a first anti-static spring; 29. a second anti-static spring; 30. anti-static pellets; 31. a flat bond; 40. pressing the sleeve; 41. pressing a plate; 42. a disc spring I; 43. a gasket; 44. a stud; 45. a second nut; 46. a gear box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a two formula cast steel fixed ball valves of fine chemical industry, including valve body 1, nut 11 fixed valve gap 2 is passed through to the left end of valve body 1, the internal surface mounting of valve gap 2 has metal valve seat 8, be provided with disk seat filler 15 and dish spring two 17 between metal valve seat 8 and the valve gap 2 respectively, and the internal surface mounting of metal valve seat 8 has graphite valve seat 9, spheroid 3 has been cup jointed in the internal surface rotation of graphite valve seat 9, the rigid coupling has backup pad 5 on the internal surface of valve body 1, the opposite side sliding connection of backup pad 5 has a bearing 24, its characterized in that: the bearing I24 is fixedly connected with the ball body 3, the disc spring II 17 is positioned above the valve seat filler 15, and the support plate 5 and the bearing I24 are respectively and symmetrically arranged relative to the ball body 3.

Concretely, at the in-process of the ball valve that opens and shuts, can accomplish the conversion of moment by single control gear box 46, and drive valve rod 4 and spheroid 3 through parallel key 31 and rotate, reach the purpose of reducing the ball valve moment of opening and shutting, the efficiency of opening and shutting of ball valve has been improved, meanwhile,

spheroid

3 and 5 design of backup pad have a bearing 24, can reduce the friction moment between spheroid 3 and backup pad 5, make valve rod 4 operate steadily in a flexible way for a long time, improve the life of valve, and the cascaded structural design of valve rod 4 can receive the location of stuffing box 6, thereby can accord with preventing of valve rod 4 completely and blow off the requirement, make the ball valve can be applied to high-pressure gas medium, the range of application of ball valve has been enlarged.

Example 2:

referring to fig. 1-2, a valve rod 4 is fixedly sleeved on the top surface of a ball body 3, a first anti-static spring 28 is arranged between the valve rod 4 and the ball body 3, the other end of the valve rod 4 is connected with a gear box 46 through a flat key 31, a support 7 is fixedly connected to the bottom surface of the gear box 46, a packing box 6 is fixedly connected between the support 7 and the valve body 1, a valve rod low-leakage packing 18 is filled between the packing box 6 and the valve rod 4, a press sleeve 40 is connected to the top surface of the valve rod low-leakage packing 18 in a contact manner, a press plate 41 is connected to the top surface of the press sleeve 40 in a contact manner, a stud 44 is sleeved in the press plate 41 in an engaged manner, a second nut 45 is sleeved at the top end of the stud 44 in an engaged manner, a gasket 43 is connected to the bottom surface of the second nut 45 in a contact manner, a first disc spring 42 is arranged between the gasket 43 and the press plate 41, a second bearing 26 is fixedly sleeved on the outer surface of the valve rod 4, the second bearing 26 is rotatably sleeved on the top wall of the valve body 1, a second anti-static spring 29 is arranged on the side wall of the valve rod 4, the other end of the second anti-static spring 29 is fixedly connected with the small anti-static ball 30, the stud 44 is respectively meshed and sleeved with the support 7 and the stuffing box 6, the gasket 43 and the first disc spring 42 are both slidably sleeved with the stud 44, and the stud 44 drives the pressing plate 41 and the pressing sleeve 40 to move through the second nut 45, the gasket 43 and the first disc spring 42.

Specifically, in the process of sealing a medium by the ball valve, the valve rod low-leakage packing 18 is continuously pressed down by the pressing sleeve 40, the pressing plate 41, the disc spring I42, the gasket 43, the stud 44 and the nut II 45, so that the sealing effect at the top end of the valve body 1 can be ensured, the leakage of the medium can be avoided, the graphite valve seat 9 is arranged at the positions of the ball body 3 and the metal valve seat 8, the metal sealing and special processing technology is adopted, when a fire occurs, the graphite valve seat 9 and the valve seat packing 15 can realize the sealing effect, the leakage of the medium can be avoided, the composite sealing structure design is adopted, the purpose of full leakage prevention is achieved, the safety of the ball valve is optimized, meanwhile, the anti-static spring I28 is arranged between the ball body 3 and the valve rod 4, the anti-static spring II 29 and the anti-static ball 30 are arranged between the valve rod 4 and the packing box 6, the ignition of flammable medium by striking a fire can be avoided, and the safe operation under special working conditions can be ensured, the safety of the ball valve is improved.

The working principle is as follows: the production cost of an enterprise can be effectively reduced by adopting the cast steel valve body 1 and the cast steel valve cover 2, meanwhile, the valve body 1 and the valve cover 2 are connected through the nut I11, so that the product is easy to install, disassemble and exchange, the aim of simple and convenient disassembly and assembly is achieved, the maintenance cost is saved, when the ball body 3 needs to be rotated through the valve rod 4, the torque conversion can be completed by controlling the gear box 46 by one person, the valve rod 4 and the ball body 3 are driven to rotate through the flat key 31, the aim of reducing the opening and closing torque of the ball valve is achieved, the opening and closing efficiency of the ball valve is improved, meanwhile, the bearing I24 is designed at the ball body 3 and the supporting plate 5, the friction torque between the ball body 3 and the supporting plate 5 can be reduced, the valve rod 4 can be stably and flexibly operated for a long time, the service life of the valve is prolonged, the stepped structural design of the valve rod 4 can be positioned by the packing box 6, and the blowout prevention requirement of the valve rod 4 can be completely met, the ball valve can be applied to high-pressure gas media, the application range of the ball valve is expanded, the valve rod low-leakage packing 18 is continuously pressed down through the pressing sleeve 40, the pressing plate 41, the disc spring I42, the gasket 43, the stud 44 and the nut II 45, the sealing effect at the top end of the valve body 1 can be ensured, the leakage of the media is avoided, the graphite valve seat 9 is arranged at the positions of the ball body 3 and the metal valve seat 8, the metal sealing and special processing technology is adopted, when a fire disaster occurs, the graphite valve seat 9 and the valve seat packing 15 can realize the sealing effect, the leakage of the media is avoided, the design of a composite sealing structure is adopted, the purpose of full leakage prevention is achieved, the sealing performance of the ball valve is optimized, meanwhile, the anti-static spring I28 is arranged between the ball body 3 and the valve rod 4, the anti-static spring II 29 and the anti-static small ball 30 are arranged between the valve rod 4 and the packing box 6, the ignition of static electricity can be avoided, and the inflammable media can be ignited, the safety operation of special working conditions is ensured, and the safety of the ball valve is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two formula cast steel fixed ball valves of fine chemistry industry, includes valve body (1), its characterized in that: the left end of valve body (1) passes through nut (11) fixed valve gap (2), the interior surface mounting of valve gap (2) has metal disk seat (8), be provided with disk seat filler (15) and dish spring two (17) between metal disk seat (8) and valve gap (2) respectively, and the interior surface mounting of metal disk seat (8) has graphite disk seat (9), spheroid (3) have been cup jointed in the interior surface rotation of graphite disk seat (9), the rigid coupling has backup pad (5) on the interior surface of valve body (1), the opposite side sliding connection of backup pad (5) has bearing (24).

2. The two-piece cast steel fixed ball valve in the fine chemical industry according to claim 1, characterized in that: the bearing I (24) is fixedly connected with the ball body (3), the disc spring II (17) is positioned above the valve seat filler (15), and the support plate (5) and the bearing I (24) are respectively and symmetrically arranged relative to the ball body (3).

3. The two-piece cast steel fixed ball valve in the fine chemical industry according to claim 1, characterized in that: the ball valve is characterized in that a valve rod (4) is fixedly sleeved on the top surface of the ball body (3), a first anti-static spring (28) is arranged between the valve rod (4) and the ball body (3), the other end of the valve rod (4) is connected with a gear box (46) through a flat key (31), the bottom surface of the gear box (46) is fixedly connected with a support (7), a packing box (6) is fixedly connected between the support (7) and the valve body (1), a valve rod low-leakage packing (18) is filled between the packing box (6) and the valve rod (4), the top surface of the valve rod low-leakage packing (18) is in contact connection with a pressure sleeve (40), the top surface of the pressure sleeve (40) is in contact connection with a pressure plate (41), a stud (44) is sleeved in the pressure plate (41), a nut (45) is sleeved on the top end of the stud (44) in a meshing manner, and a gasket (43) is in contact connection with the bottom surface of the nut (45), and a disc spring I (42) is arranged between the gasket (43) and the pressure plate (41).

4. The two-piece cast steel fixed ball valve in the fine chemical industry according to claim 3, characterized in that: the outer fixed surface of valve rod (4) has cup jointed bearing two (26), bearing two (26) rotate with the roof of valve body (1) and cup joint, install on the lateral wall of valve rod (4) and prevent static spring two (29), the other end rigid coupling of preventing static spring two (29) has prevents static bobble (30).

5. The two-piece cast steel fixed ball valve in the fine chemical industry according to claim 3, characterized in that: the stud (44) is respectively meshed and sleeved with the support (7) and the stuffing box (6), and the gasket (43) and the disc spring I (42) are both slidably sleeved with the stud (44).

6. The two-piece cast steel fixed ball valve in the fine chemical industry according to claim 3, characterized in that: the stud (44) drives the pressing plate (41) and the pressing sleeve (40) to move through a second nut (45), a spacer (43) and a first disc spring (42).