CN210920287U

CN210920287U - Driving mechanism for fixing valve rod of ball valve

Info

Publication number: CN210920287U
Application number: CN201921270957.2U
Authority: CN
Inventors: 韩泽海; 牛超
Original assignee: Cnv Valve & Control Co inc
Current assignee: Cnv Valve & Control Co inc
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-07-03
Anticipated expiration: 2029-08-07

Abstract

The utility model relates to an actuating mechanism of fixed ball valve rod, including a valve rod, a support, a gland flange and a driving piece, the top department of valve rod is equipped with two flat sides, the valve rod is in flat side department encircles and is provided with an annular, the valve rod is the step shaft, the cover is equipped with a valve rod bush on the valve rod, the valve rod passes in proper order the support with the gland flange, the valve rod bush with the support butt, the support with the gland flange passes through the round pin location to connect through first connecting piece, the driving piece with the flat side is connected, the driving piece drive the valve rod rotates. The utility model relates to a fixed ball valve rod's actuating mechanism has handle components and the interchangeable support connection structure of gear box subassembly, economical and practical.

Description

Driving mechanism for fixing valve rod of ball valve

Technical Field

The utility model relates to a fixed ball valve technical field, especially an actuating mechanism of fixed ball valve rod.

Background

The fixed ball valve is a new generation high-performance ball valve, is suitable for long-distance pipelines and general industrial pipelines, is specially considered in the design of strength, safety, severe environment resistance and the like, and is suitable for various corrosive and non-corrosive media and even some working conditions with lower temperature. The fixed ball valve has the characteristics of double blocking and discharging functions, automatic pressure relief function, fireproof safety structure and the like, and has the advantages of emergency sealing grease injection rescue, reliable valve rod sealing, low operating torque, full drift diameter or reducing diameter, lengthened valve rod, flexible operation and the like. Due to the characteristics and advantages, the fixed ball valve is widely applied to the industries of chemical industry, petroleum, natural gas, metallurgy and the like, and is also paid more and more attention by users and valve manufacturers.

When the working condition environment of the valve is special, such as low temperature, high temperature and some working conditions that a common O-shaped sealing ring is not suitable, the valve rod of the valve needs to be specially designed, graphite or other special sealing elements are used at the position of the valve rod, and meanwhile, the interchangeability of the driving piece is realized on the premise that the parts at the top of the valve are not replaced according to different valve operation requirements of customers for the valve with the same specification.

Therefore, a driving mechanism for fixing the valve rod of the ball valve is developed to solve the defects.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art and providing a driving mechanism for fixing a ball valve rod, which is provided with a bracket connecting structure with an interchangeable handle component and a gear box component.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides an actuating mechanism of fixed ball valve rod, includes a valve rod, a support, a gland flange and a driving piece, the top department of valve rod is equipped with two flat surfaces, the valve rod is in flat surface department encircles and is provided with an annular, the valve rod is the step shaft, the cover is equipped with a valve rod bush on the valve rod, the valve rod passes in proper order the support with the gland flange, the valve rod bush with the support butt, the support with the gland flange passes through the round pin location to connect through first connecting piece, the driving piece with the flat surface is connected, the driving piece drive the valve rod rotates.

Preferably, the support comprises hollow shaped steel and the upper flange of hollow shaped steel top department, be equipped with a plurality of gear box connecting holes, a valve rod hole, two handle locking pinhole and a stop screw hole on the upper flange, the valve rod hole sets up the central point department of putting of upper flange, handle locking pinhole with the stop screw hole with the valve rod hole evenly arranges on half circumference as the center, the gear box connecting hole with the valve rod hole evenly arranges on an outer circumference as the center, the stop screw hole sets up the downside in valve rod hole.

Preferably, the valve rod is sealed through a seal assembly, the seal assembly sleeve is established in the gland flange on the valve rod, the seal assembly is in through the clamp plate crimping on the gland flange, the clamp plate with the gland flange passes through the second connecting piece and connects.

Preferably, the sealing assembly is sequentially connected with a packing ring, a plurality of graphite packings and a gasket from top to bottom.

Preferably, the drive member is a handle assembly or a gearbox assembly.

Preferably, the handle assembly comprises a T-shaped handle seat, a handle steel pipe and a locking pin, the bottom end of the T-shaped handle seat is sleeved with the flat surface and is abutted through a screw, the handle steel pipe is horizontally inserted into the top end of the T-shaped handle seat, the handle steel pipe and the T-shaped handle seat are fixed through a hexagonal bolt, and the locking pin vertically penetrates through the T-shaped handle seat and is inserted into the handle locking pin hole.

Preferably, the handle assembly further comprises a limiting plate, a spring retainer ring is connected in the annular groove in a clamped mode, the limiting plate is arranged at the middle position of the spring retainer ring and the support, and the bottom end of the T-shaped handle seat is abutted to the spring retainer ring.

Preferably, the threaded hole of the limiting screw is internally screwed with an inner hexagon bolt, and the inner hexagon bolt limits the rotating angle range of the limiting plate in the horizontal plane to be 0-90 degrees.

Preferably, the gear box assembly comprises a gear box, the bottom end of the gear box is sleeved with the flat surface, and the gear box is connected with the bracket through a third connecting piece.

Preferably, the second connecting piece comprises a second stud, a second nut and a second elastic pad, the second elastic pad and the second nut sequentially penetrate through the second stud, and the second nut is connected with the pressing plate and the gland flange through the second stud.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the actuating mechanism of fixed ball valve rod, the interchangeability on fixed ball valve rod top, handle and gear box interchangeable leg joint structure, economical and practical.

Drawings

Fig. 1 is a front view of a driving mechanism for fixing a valve rod of a ball valve according to the present invention;

FIG. 2 is a view taken along line A of FIG. 1;

FIG. 3 is a view taken along line B of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;

FIG. 5 is a front view of the mounting handle assembly of FIG. 1;

FIG. 6 is a cross-sectional view taken along line D-D of FIG. 5;

FIG. 7 is a front view of the assembled gearbox assembly of FIG. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In fig. 1 to 7, an actuating mechanism for fixing a valve rod of a ball valve includes a valve rod 1, a support 7, a gland flange 6 and an actuating member. The top department of valve rod 1 is equipped with two flats 101, and valve rod 1 is provided with an annular 102 in flat 101 department around, and valve rod 1 is the step shaft, and the cover is equipped with a valve rod bush 2 on the valve rod 1, and support 7 and gland flange 6 are passed in proper order to valve rod 1, and valve rod bush 2 and support 7 butt, support 7 and gland flange 6 pass through round pin 8 location to through first connecting piece connection, the driving piece is connected with flat 101, and driving piece drive valve rod 1 rotates. The first connecting piece comprises a first stud 3, a first nut 4 and a first elastic cushion 5, the first nut 4 and the first elastic cushion 5 penetrate through the first stud 3, and the first stud 3 connects the support 7 with the gland flange 6.

The support 7 is composed of hollow section steel and an upper flange 71 at the top end of the hollow section steel, a plurality of gear box connecting holes 72, a valve rod hole 74, two handle locking pin holes 73 and a limit screw threaded hole 75 are arranged on the upper flange 71, the valve rod hole 74 is arranged at the central position of the upper flange 71, the handle locking pin holes 73 and the limit screw threaded hole 75 are uniformly arranged on a half circumference by taking the valve rod hole 74 as the center, the gear box connecting holes 72 are uniformly arranged on an outer circumference by taking the valve rod hole 74 as the center, and the limit screw threaded hole 75 is arranged at the lower side of the valve rod hole 74. The upper flange 71 and the hollow section steel are connected at both ends with welding seams 70.

The valve rod 1 is sealed through a sealing assembly, the sealing assembly is sleeved on the valve rod 1 in the gland flange 6, the sealing assembly is in compression joint on the gland flange 6 through a pressing plate 94, and the pressing plate 94 is connected with the gland flange 6 through a second connecting piece. The seal assembly is sequentially connected with a packing ring 95, a plurality of graphite packings 96 and a gasket 97 from top to bottom. The second connecting piece comprises a second stud 91, a second nut 92 and a second elastic pad 93, the second elastic pad 93 and the second nut 92 sequentially penetrate through the second stud 91, and the second nut 92 connects the pressing plate 94 with the gland flange 6 through the second stud 91.

The driving member is a handle assembly or a gear box assembly.

The handle assembly comprises a T-shaped handle seat 11, a handle steel tube 10 and a locking pin 14. The bottom end of the T-shaped handle seat 11 is sleeved with the flat surface 101 and is abutted to the flat surface through a screw 12, the handle steel pipe 10 is horizontally inserted into the top end of the T-shaped handle seat 11, the handle steel pipe 10 and the T-shaped handle seat 11 are fixed through a hexagon bolt 9, and the locking pin 14 vertically penetrates through the T-shaped handle seat and is inserted into the handle locking pin hole 73. The handle assembly further comprises a limiting plate 13, a spring retainer ring 15 is connected in the annular groove 102 in a clamping mode, the limiting plate 13 is arranged in the middle position of the spring retainer ring 15 and the support 7, and the bottom end of the T-shaped handle seat 11 is abutted to the spring retainer ring 15. The limiting screw thread hole 75 is internally screwed with an inner hexagon bolt 16, and the inner hexagon bolt 16 limits the rotating angle range of the limiting plate 13 in the horizontal plane to be 0-90 degrees.

The limit plate 13 is positioned at the lowest part of the flat surface 101 of the valve rod 1, and the spring retainer ring 15 is arranged in the annular groove 102 of the valve rod 1. The limiting plate 13 is pressed, the inner hexagonal bolt 16 is screwed into the limiting screw threaded hole 75 of the support 7, the valve rod 1 drives the limiting plate 13 to rotate during valve opening and closing, and the rotating position of the valve rod 1 is limited through the action of the inner hexagonal bolt 16 and the limiting plate 13, so that the valve opening and closing position is limited. When the valve is fully opened or closed, the locking pin 14 is inserted into the handle locking pin hole 73 of the T-shaped handle seat 11, the limiting plate 13 and the bracket 7, and the valve opening and closing position is locked. The T-shaped handle seat 11 is arranged at the end part of the flat surface 101 of the valve rod 1, and the valve rod 1 is fixed by a screw 12; the handle steel pipe 10 is inserted into the hole of the T-shaped handle seat 11, and the T-shaped handle seat 11 is fixed by the hexagon bolt 9 and is used for opening and closing the valve.

The gear box assembly comprises a gear box 17, the bottom end of the gear box 17 is sleeved with the flat surface 101, and the gear box 17 is connected with the bracket 7 through a third connecting piece. The third connecting piece comprises a third stud 20, a third nut 19 and a third elastic cushion 18, the gear box 17 and the support 7 are connected through the third stud 20, the third nut 19 and the third elastic cushion 18 penetrate through the third stud 20, and the third elastic cushion 18 is pressed on the support 7 through the third nut 19. The gear box 17 is positioned on the upper flange 71 of the bracket 7, the flat surface 101 of the valve rod 1 is inserted into the flat groove of the gear box 17, the gear box 17 and the bracket 7 are fixed by a third elastic cushion 18, a third nut 19 and a third stud 20, and the bracket 7 is provided with a gear box connecting hole 72, wherein the third elastic cushion 18 plays a role of loosening, and the fastening piece can be loosened by repeatedly opening and closing the valve.

The driving mechanism for fixing the valve rod of the ball valve has the advantages that the interchangeability of the top end of the valve rod of the fixed ball valve and the bracket connecting structure with the interchangeable handle and the interchangeable gear box are realized, and the driving mechanism is economical and practical.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a fixed ball valve stem's actuating mechanism which characterized in that: including a valve rod, a support, a gland flange and a driving piece, the top department of valve rod is equipped with two flat surfaces, the valve rod is in flat surface department encircles and is provided with an annular, the valve rod is the step shaft, the cover is equipped with a valve rod bush on the valve rod, the valve rod passes in proper order the support with the gland flange, the valve rod bush with the support butt, the support with the gland flange is through selling the location to connect through first connecting piece, the driving piece with the flat surface is connected, the driving piece drive the valve rod rotates.

2. The driving mechanism for fixing the valve rod of the ball valve according to claim 1, wherein the bracket is composed of a hollow section steel and an upper flange at the top end of the hollow section steel, the upper flange is provided with a plurality of gear box connecting holes, a valve rod hole, two handle locking pin holes and a limit screw threaded hole, the valve rod hole is arranged at the central position of the upper flange, the handle locking pin holes and the limit screw threaded hole are uniformly arranged on a half circumference by taking the valve rod hole as the center, the gear box connecting holes are uniformly arranged on an outer circumference by taking the valve rod hole as the center, and the limit screw threaded hole is arranged at the lower side of the valve rod hole.

3. The actuator for fixing the valve stem of a ball valve according to claim 1, wherein the valve stem is sealed by a sealing assembly, the sealing assembly is sleeved on the valve stem in the gland flange, the sealing assembly is pressed on the gland flange by a pressing plate, and the pressing plate is connected with the gland flange by a second connecting piece.

4. The actuator for securing a valve stem of a ball valve according to claim 3, wherein said seal assembly has a packing ring, a plurality of graphite packings and a gasket attached thereto in sequence from top to bottom.

5. The drive mechanism for securing the stem of a ball valve according to claim 2, wherein the drive member is a handle assembly or a gear box assembly.

6. The actuating mechanism for fixing the valve rod of the ball valve according to claim 5, wherein the handle assembly comprises a T-shaped handle seat, a handle steel pipe and a locking pin, the bottom end of the T-shaped handle seat is sleeved with the flat surface and abutted by a screw, the handle steel pipe is horizontally inserted into the top end of the T-shaped handle seat, the handle steel pipe and the T-shaped handle seat are fixed through a hexagon bolt, and the locking pin vertically penetrates through the T-shaped handle seat and is inserted into the handle locking pin hole.

7. The actuating mechanism for fixing a ball valve stem according to claim 6, wherein said handle assembly further comprises a retainer plate, a spring ring is snap-fitted into said annular groove, said retainer plate is disposed at a position intermediate said spring ring and said bracket, and a bottom end of said T-shaped handle seat abuts against said spring ring.

8. The driving mechanism for fixing the valve rod of the ball valve according to claim 7, wherein a hexagon socket head cap screw is screwed in the threaded hole of the limiting screw, and the hexagon socket head cap screw limits the rotation angle of the limiting plate in the horizontal plane to 0-90 °.

9. The mechanism as claimed in claim 5, wherein the gear housing assembly includes a gear housing having a bottom end that is received in the flat surface, the gear housing being connected to the support by a third connection.

10. The drive mechanism for fixing the valve stem of the ball valve as claimed in claim 3, wherein the second connecting member comprises a second stud, a second nut and a second elastic washer, the second elastic washer and the second nut sequentially penetrate into the second stud, and the second nut connects the pressure plate and the gland flange through the second stud.