CN217736329U

CN217736329U - Emergency cut-off track valve

Info

Publication number: CN217736329U
Application number: CN202221362004.0U
Authority: CN
Inventors: 洪俊瑜; 洪墨飞
Original assignee: Qingzhou Cologne Valve Co ltd
Current assignee: Fujian Zhente Valve Technology Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-11-04
Anticipated expiration: 2032-06-02

Abstract

The utility model relates to an engineering equipment technical field, in particular to promptly cut off track valve. The valve comprises an end cover, wherein a lower valve rod is arranged at the upper part of the end cover, the lower valve rod penetrates through a lower shaft hole of an elastic spherical support and is fixed through a fixed pin shaft, a tapered roller bearing is arranged at the upper part of the lower valve rod, a valve cover is arranged at one side of a valve body, and a middle flange gasket is arranged between the valve cover and a main valve body; the inward sides of the valve body and the valve cover are provided with a soft sealing valve seat and a hard sealing surface, one side of the sealing valve seat is provided with an elastic spherical support, two sides of the elastic spherical support are respectively provided with a sealing plate, the upper part of the elastic spherical support is provided with an opening, symmetrical grooves are arranged in the middle of two sides of the opening, and a butterfly-shaped supporting block with an inverted V-shaped guide slot hole with a wide upper part and a narrow lower part is arranged in the middle of the groove. The valve can solve the defects of large opening torque, long closing time and unreliable sealing caused by a non-forced sealing structure of the soft and hard sealing ball valve.

Description

Emergency cut-off track valve

Technical Field

The utility model relates to an engineering equipment technical field, in particular to promptly cut off track valve.

Background

Ball valves (ball valve) come out in 50 s of the 20 th century, and with the rapid development of science and technology and the continuous improvement of production process and product structure, the ball valves have rapidly developed into a main valve class in short 40 years. The opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve, the conventional ball valve basically has the structure that the ball body is in close contact with a sealing valve seat, and the sealing is realized after the valve seat applies larger pretightening force, the conventional ball valve is not a forced sealing structure regardless of a soft sealing structure and a hard sealing structure, is in contact friction in the opening and closing process and is influenced by the thrust of a pipeline medium and different sealing surface materials, and the sealing characteristics of the ball valve are caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing an emergency cut-off track valve.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an emergency cut-off track valve comprises an end cover, wherein a lower valve rod is arranged at the upper part of the end cover, the lower valve rod penetrates through a lower shaft hole of an elastic spherical support and is fixed through a fixed pin shaft, a tapered roller bearing is arranged at the upper part of the lower valve rod, a valve cover is arranged at one side of a valve body, and a middle flange gasket is arranged between the valve cover and a main valve body; the inward sides of the valve body and the valve cover are provided with a soft sealing valve seat and a hard sealing surface, one side of the sealing valve seat is provided with an elastic spherical support, two sides of the elastic spherical support are respectively provided with a sealing plate, the upper part of the elastic spherical support is provided with an opening, two sides of the opening are provided with symmetrical grooves, and the middle of the groove is provided with a butterfly-shaped supporting block, two sides of which are provided with inverted splayed guide slot holes with a wide upper part and a narrow lower part.

Preferably, the tapered roller bearing is placed in the inner hole at the bottom of the main valve body and penetrates through the lower shaft hole of the valve body, and the tapered roller bearing is locked and connected through a nut.

Preferably, a middle flange gasket is arranged between the valve cover and the main valve body and is locked, sealed and connected through a group of bolts and nuts.

Preferably, the elastic ball-shaped support is a ball-shaped support, the upper part of the support is provided with a notch, the centers of two sides of the notch are provided with grooves perpendicular to the flow passage hole, two side surfaces of the notch are provided with a through round hole, the center parts of two sides of the flow passage hole are respectively provided with a round hole, one end of the sealing plate is provided with a cylinder, the cylinder is inserted into the round holes of two sides of the elastic ball-shaped support and is fixed by spot welding to be combined with the elastic ball-shaped support into an elastic sealing ball body.

Preferably, the convex lugs on two sides of the butterfly-shaped supporting block are provided with guide slotted holes, the guide slotted holes are attached to the inner side plane of the notch on the upper part of the elastic ball body, the stud penetrates through the round holes on two sides of the notch of the elastic ball body and the guide slotted holes on two sides of the butterfly-shaped supporting block, and the stud is provided with a nut which is locked and fixed to be connected with the elastic ball body and the butterfly-shaped supporting block.

Preferably, one side of the butterfly-shaped supporting block is provided with a connecting hole, and the butterfly-shaped supporting block is fixed by a fixing pin which penetrates through a valve rod inserted into the middle of the supporting block from a round hole in the side surface of the butterfly-shaped supporting block.

Preferably, the upper part of the valve rod is provided with a packing, the packing is placed in a packing box at the upper part of the main valve body after being sleeved into the valve rod, the upper part of the packing is provided with a packing pressing plate, and the packing pressing plate is connected and locked with the main valve body through a bolt.

Preferably, the support penetrates through the valve rod and is pressed on a flange on the upper portion of the main valve body, the support is connected with the main valve body through a group of bolts and nuts in a locking mode, a hole groove is formed in the upper portion of the support, the bearing is sleeved with the valve rod and placed at the bottom of the hole groove of the support, and a valve rod nut is arranged on the upper portion of the bearing.

Preferably, the valve rod nut is screwed into the valve rod and then is tightly pressed on the upper part of the tapered roller bearing, and the upper part of the valve rod nut is connected with the valve rod, the bearing and the nut gland through the nut gland which is sleeved on the upper opening of the hole groove of the support and locked by the valve rod and the valve rod nut.

Preferably, a hand wheel is arranged at one end of the valve rod nut, which penetrates through the nut gland, and a locking nut is arranged at the upper part of the hand wheel; the middle part of the valve rod is provided with a fixed handle; the handle is driven by the hand wheel to lift upwards through the guide of the L-shaped handle guide groove through anticlockwise rotation, the valve rod drives the connected butterfly-shaped supporting block to lift upwards synchronously, the inverted-splayed guide groove holes on two sides of the butterfly-shaped supporting block press the guide pins clamped in the grooves to drive the elastic sealing ball body assembly to contract inwards along with the upward movement of the butterfly-shaped supporting block, the ball body is separated from the sealing valve seat, and then the opening and closing action is completed by controlling the handle plane connected with the middle part of the valve rod to extend the groove to move the rotation degree.

To sum up, the utility model discloses following beneficial effect has:

1. the valve rod is lifted or lowered to synchronously drive the butterfly-shaped supporting block with the inverted V-shaped guide slot hole with the wide upper part and the narrow lower part to drive the elastic ball body assembly to be unfolded or contracted to form the combined forced sealing structure, the sealing reliability of the technical seal is ensured, because the whole process of opening or closing the valve, namely the ball sealing surface is not in contact with the sealing surface of the valve seat, the zero-friction opening and closing function is realized, the possibility of scratching the sealing surface is reduced, the service life of the valve is greatly prolonged, the opening and closing stroke of the valve is shortened, the closing time is shortened, and the valve has an emergency cut-off function. The elastic ball body is fixed by the cylindrical pin, can slide up and down in the set wedge-shaped groove, and can be pushed to expand or contract, so that the elastic ball body has the function of increasing or decreasing the volume under a controlled state. Each component of the valve is produced by adopting a standard modular design, is easy to process and convenient to assemble and is convenient for maintaining and replacing parts;

2. the sealing ball body is designed to be formed by combining an elastic ball-shaped support and a sealing plate and is designed to be in an upper-opening and lower-connecting mode, external force is applied to the valve rod, the butterfly-shaped supporting block is used for expanding or contracting the elastic ball body assembly, the ball body is separated from the sealing surface of the valve seat in a controlled state, then the valve is opened and closed, and no rotary friction is generated in the whole process to reduce the torque of the valve and protect the sealing surface and the spherical surface; the sealing valve plate and the elastic spherical support are formed by combining two parts, so that the processing difficulty is reduced, the working efficiency is improved, the processing period is shortened, the production cost can be greatly reduced, and the large-scale production is facilitated;

3. the valve seat is designed into soft and hard double-channel sealing, the reliability of the sealing performance of the technology can be ensured, and meanwhile, the valve seat has a fireproof function, so that the technology can adapt to high-risk working conditions of various toxic, harmful, flammable and explosive media, the sealing performance of the valve due to frequent opening and closing operations can be greatly improved, and the service life of the valve is prolonged.

Drawings

Fig. 1 is a schematic structural diagram provided by the utility model relates to a track butterfly valve:

fig. 2 is a schematic structural view of the open position of the handle guide groove provided by the track butterfly valve of the present invention;

fig. 3a and 3b are schematic structural diagrams of a butterfly support block provided by a track butterfly valve according to the present invention;

wherein: 1. an end cap; 2. a lower valve stem; 3. a nut; 4. a tapered roller bearing; 5. fixing a pin shaft; 6. a valve cover; 7. a middle flange gasket; 8. a hard seal face; 9. a soft seal valve seat; 10. a sealing plate; 11. a spherical support; 12. a butterfly-shaped supporting block; 13. a guide slot hole; 14. a bolt and a nut; 15. a filler; 16. a packing press plate; 17. a support; 18. a gland bolt; 19. a bearing; 20. a valve stem nut; 21. a nut gland; 22. a hand wheel; 23. locking the nut; 24. a fixing pin; 25. a guide pin; 26. a valve stem; 27. a handle; 28. a handle guide groove.

Detailed Description

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

1-3, an slam shut orbit valve, comprising: the upper portion of the end cover 1 and the upper portion of the end cover 1 are provided with a lower valve rod 2, the lower valve rod 2 penetrates through a lower shaft hole of the elastic spherical support and is fixed through a fixed pin shaft 5, the upper portion of the lower valve rod 2 is provided with a tapered roller bearing 4, the tapered roller bearing 4 is placed in a bottom inner hole of a main valve body and penetrates through a lower shaft hole of the valve body, and the tapered roller bearing 4 is connected in a locking mode through a nut 3. A valve cover 6 is arranged on one side of the valve body, a middle flange gasket 7 is arranged between the valve cover 6 and the main valve body, and the middle flange gasket is locked, sealed and connected through a group of bolts and nuts. The inward side of the valve body and the valve cover 6 is provided with a soft sealing valve seat 9 and a hard sealing surface 8, one side of two different sealing valve seats is provided with an elastic spherical support 11, two sides of the elastic spherical support 11 are respectively provided with a sealing plate 10, one end of each sealing plate 10 is provided with a cylinder, the cylinder is inserted into round holes on two sides of the elastic spherical support 11, and the cylinder and the elastic spherical support 11 are fixed through spot welding to form an elastic sealing sphere. The upper part of the elastic spherical support 11 is provided with a notch, two symmetrical grooves are milled at two sides of the notch, a butterfly-shaped support block 12 with upper wide and lower narrow inverted eight-character guide slotted holes at two sides is arranged in the middle of the groove, protruding lugs at two sides of the butterfly-shaped support block 12 are provided with guide slotted holes 13, the guide slotted holes 13 are tightly attached to the inner side plane of the notch at the upper part of the elastic ball, and the studs penetrate through round holes at two sides of the notch of the elastic ball and the guide slotted holes at two sides of the butterfly-shaped support block 12 and are provided with nuts for locking and fixing to be connected with the elastic ball assembly and the butterfly-shaped support block 12. One side of the butterfly-shaped supporting block 12 is provided with a connecting hole, a valve rod inserted into the middle of the supporting block from a circular hole on the side surface of the butterfly-shaped supporting block 12 is fixed through a fixing pin, the upper part of the valve rod is provided with a packing 15, the packing 15 is placed in a packing box on the upper part of the main valve body after being sleeved into the valve rod, the upper part of the packing is provided with a packing pressing plate 16, and the packing pressing plate 16 is connected and locked with the main valve body through a bolt. The support 17 penetrates through the valve rod and is pressed on a flange on the upper portion of the main valve body and is connected with the main valve body through a group of bolts and nuts in a locking mode, a hole groove is formed in the upper portion of the support, the valve rod is sleeved in the bearing 19 and is placed at the bottom of the hole groove of the support, the valve rod nut 20 is arranged on the upper portion of the bearing 19, the valve rod nut 20 is screwed into the valve rod and then is tightly pressed on the upper portion of the tapered roller bearing 4, and the upper portion of the valve rod nut 20 is connected with the valve rod, the bearing 19 and the nut gland 21 through a nut gland 21 which is sleeved in the upper opening of the hole groove of the support and is locked with the valve rod and the valve rod nut 20. One end of the valve rod nut 20 penetrating through the nut gland 21 is provided with a hand wheel 22, and the upper part of the hand wheel 22 is provided with a locking nut 23. The middle part of the valve rod is provided with a fixed handle 27. The components are combined into an emergency cut-off track valve, the valve rod is driven by rotating the hand wheel anticlockwise to be lifted upwards through the guide of the L-shaped handle guide groove 28, the valve rod drives the connected butterfly-shaped supporting block 12 to be lifted upwards synchronously, the inverted splayed guide groove holes 13 on the two sides of the butterfly-shaped supporting block 12 press the guide pins clamped in the grooves to drive the elastic sealing ball body assembly to contract inwards along with the upward movement of the butterfly-shaped supporting block 12, the ball body is reduced in size and separated from the sealing valve seat, then the handle plane connected with the middle part of the valve rod is pulled to move along the grooves to rotate for 90 degrees through control, the opening and closing action is completed, the valve is opened, and otherwise, the valve is closed.

The specific embodiments are only for explaining the present invention, and it is not a limitation to the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present invention.

Claims

1. An emergency shut-off orbit valve comprising an end cap (1), characterized in that: a lower valve rod (2) is arranged at the upper part of the end cover (1), the lower valve rod (2) penetrates through a lower shaft hole of the elastic spherical support and is fixed through a fixed pin shaft (5), a tapered roller bearing (4) is arranged at the upper part of the lower valve rod (2), a valve cover (6) is arranged at one side of the valve body, and a middle flange gasket (7) is arranged between the valve cover (6) and the main valve body; a soft sealing valve seat (9) and a hard sealing surface (8) are arranged on one inward side of the valve body and the valve cover (6), an elastic spherical support (11) is arranged on one side of the sealing valve seat, sealing plates (10) are respectively arranged on two sides of the elastic spherical support (11), an opening is arranged on the upper portion of the elastic spherical support (11), symmetrical grooves are arranged on two sides of the opening, and a butterfly-shaped supporting block (12) with an inverted V-shaped guide slot hole (13) which is wide at the upper part and narrow at the lower part is arranged in the middle of the groove.

2. An slam shut orbit valve according to claim 1, wherein: the tapered roller bearing (4) is placed in an inner hole at the bottom of the main valve body and penetrates through a lower shaft hole of the valve body, and the tapered roller bearing (4) is locked and connected through the nut (3).

3. An slam shut rail valve as defined in claim 2 wherein: the valve cover (6) is tightly sealed and connected with a middle flange gasket (7) arranged between the main valve body through a group of bolts and nuts.

4. An slam shut rail valve as defined in claim 3 wherein: the elastic spherical support (11) is a spherical support, the upper part of the support is provided with an opening, the centers of two sides of the opening are provided with grooves perpendicular to the flow passage hole, two side surfaces of the opening are provided with a through round hole, the center parts of two sides of the flow passage hole are respectively provided with a round hole, one end of the sealing plate (10) is provided with a cylinder, the cylinder is inserted into the round holes of two sides of the elastic spherical support (11), and the cylinder is fixed by spot welding and is combined with the elastic spherical support (11) into an elastic sealing ball body.

5. An slam shut rail valve as defined in claim 4 wherein: the convex lugs on the two sides of the butterfly-shaped supporting block (12) are provided with guide slotted holes (13), the guide slotted holes (13) are attached to the inner side plane of the groove of the upper part of the elastic ball body, the stud penetrates through round holes on the two sides of the opening of the elastic ball body and the butterfly-shaped supporting block (12) and is inserted into the guide slotted holes on the two sides of the groove on the upper part of the elastic ball-shaped support (11), and the stud is provided with a nut to be locked and fixed to be connected with the elastic ball body and the butterfly-shaped supporting block (12).

6. An slam shut orbit valve according to claim 5, wherein: a connecting hole is formed in one side of the butterfly-shaped supporting block (12), and a valve rod inserted into the middle of the supporting block is fixed through a fixing pin from a round hole in the side face of the butterfly-shaped supporting block (12).

7. An slam shut rail valve as defined in claim 6 wherein: the upper part of the valve rod is provided with a packing (15), the packing (15) is placed in a packing box at the upper part of the main valve body after being sleeved into the valve rod, the upper part of the packing is provided with a packing pressing plate (16), and the packing pressing plate (16) is connected and locked with the main valve body through a bolt.

8. An slam shut orbit valve according to claim 7, wherein: the support (17) penetrates through the valve rod and is pressed on a flange on the upper part of the main valve body and is connected with the main valve body through a group of bolts and nuts in a locking mode, a hole groove is formed in the upper part of the support, the bearing (19) is sleeved into the valve rod and is placed at the bottom of the hole groove of the support, and a valve rod nut (20) is arranged on the upper part of the bearing (19).

9. An slam shut rail valve as defined in claim 8 wherein: the valve rod nut (20) is screwed into the valve rod and then is tightly pressed on the upper part of the tapered roller bearing (4), and the upper part of the valve rod nut (20) is connected with the valve rod, the bearing (19) and the nut gland (21) through the nut gland (21) which is sleeved into the valve rod and the valve rod nut (20) and locked on the upper opening of the bracket hole groove.

10. An slam shut rail valve as defined in claim 9 wherein: a hand wheel (22) is arranged at one end of the valve rod nut (20) penetrating through the nut gland (21), and a locking nut (23) is arranged at the upper part of the hand wheel (22); a fixed handle (27) is arranged in the middle of the valve rod; the valve rod is driven to upwards lift through the guiding of the L-shaped handle guide groove (28) by rotating the hand wheel anticlockwise, the valve rod drives the connected butterfly-shaped supporting block (12) to upwards lift synchronously, along with the upward movement of the butterfly-shaped supporting block (12), the inverted splayed guide groove holes (13) on the two sides of the butterfly-shaped supporting block (12) press the studs clamped in the groove to drive the elastic sealing ball body assembly to inwards shrink, the ball body is reduced in size, the ball body is separated from the sealing valve seat, then the groove on the support is extended by controlling and pulling the handle plane connected to the middle of the valve rod to move for 90 degrees, the opening operation is completed, and otherwise, the valve closing operation is completed.