CN212839694U

CN212839694U - Valve remote actuating mechanism

Info

Publication number: CN212839694U
Application number: CN202021954774.5U
Authority: CN
Inventors: 左占库; 赵鹏飞; 庞果果; 穆森; 樊立伟
Original assignee: DALIAN SIFANG MOTOR-PUMP CO LTD
Current assignee: DALIAN SIFANG MOTOR-PUMP CO LTD
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-03-30
Anticipated expiration: 2030-09-09

Abstract

The utility model relates to the technical field of mechanical valve driving devices, in particular to a valve remote actuating mechanism, which comprises a valve operating hand wheel, a driving shaft, a fixed support, an operating end shaft coupling, a flexible shaft and a valve body; the valve operation hand wheel is connected with one end of a driving shaft, the driving shaft is rotationally connected with the fixed support, the other end of the driving shaft is connected to one end of a flexible shaft through an operation end coupler, and the other end of the flexible shaft is connected to the valve body. The flexible shaft remote driving valve has a simple and reliable structure, can effectively transfer torque, adopts the flexible shaft to remotely drive the valve to open and close, and reduces the possibility of accidental injury to operators under special working conditions to a certain extent.

Description

Valve remote actuating mechanism

Technical Field

The utility model relates to a mechanical type valve drive arrangement technical field specifically is a valve remote actuator.

Background

Remote drives are used for special conditions where valves are difficult to access. For example, in some cases, the valve is located too far, or in a firewall or hazardous area, and the operator needs to be away from the valve and in a safe area for remote operation, and the need for remote operation arises.

The existing remote driving device mostly adopts the forms of electric signal control and the like, the methods depend on electric power, occasionally cause the condition of 'control failure', if the mechanical remote driving device exists, the dependence on the electric power can be eliminated, and the falling from a platform when a person operates a valve with a higher position can be avoided; avoiding personnel from entering dangerous areas (mines) below the ground when operating valves below the ground; meanwhile, the accident injury to people in certain dangerous fields such as nuclear power industry can be avoided.

Therefore, it is necessary to develop a mechanical remote driving apparatus.

SUMMERY OF THE UTILITY MODEL

In view of prior art's defect, the utility model provides a valve remote actuator, its simple structure, it is reliable, can effectively transmit the moment of torsion, adopt the long-range valve switch action that drives of flexible axle, reduced to a certain extent under the special operating mode that operating personnel receives the possibility of accidental injury.

In order to achieve the purpose, the technical scheme adopted by the utility model is a valve remote actuating mechanism, which comprises a valve operating hand wheel, a driving shaft, a fixed bracket, an operating end coupling, a flexible shaft and a valve body; the valve operation hand wheel is connected with one end of a driving shaft, the driving shaft is rotationally connected with the fixed support, the other end of the driving shaft is connected to one end of a flexible shaft through an operation end coupler, and the other end of the flexible shaft is connected to the valve body.

Based on the technical scheme, the valve which needs to operate in a toxic and harmful gas area, a flammable and explosive area, an isolation area and a limited space area can be pulled to a safe position for operation, and meanwhile, the flexible shaft driving mechanism has the characteristics of passing through the shielding wall, bypassing the explosion-proof wall and the barrier, and suspending and extending for a large span for operation.

Furthermore, the flexible shaft is connected to a valve driving worm shaft through an execution end coupler, and the valve driving worm shaft drives a valve execution hand wheel to perform opening and closing actions.

Furthermore, the flexible shaft is internally provided with a steel wire rope structure, the metal hose is externally provided with a metal hose, lubricating grease is arranged between the steel wire rope and the hose, and flexible shaft joints are arranged at two ends of the steel wire rope.

Based on above-mentioned technical scheme, flexible axle inside is the wire rope structure, and the outside is metal collapsible tube, has lubricated grease between wire rope and hose, and the grease also can prevent that wire rope from rustting simultaneously, and the wire rope both ends are flexible axle joint, accessible shaft coupling and other hub connections.

Furthermore, one end of the driving shaft connected with the flexible shaft is provided with a square section, the driving shaft is matched and connected with a square hole on the flexible shaft joint to transmit torque, and a square hole on the flexible shaft joint at the other end of the flexible shaft is matched and connected with a square section shaft end of the valve driving worm shaft to transmit torque.

Further, the drive shaft external diameter is equipped with the screw thread, shows position nut and drive shaft threaded connection, the installation gib block of fixed bolster, be equipped with on the gib block and show the position scale, show position nut and gib block sliding connection.

Based on the technical scheme, the driving shaft of the upper valve operating hand wheel is provided with threads, a position indicating nut and a position indicating ruler, so that the actual positions of opening and closing of the valve can be observed conveniently.

Further, a locking device is arranged on the driving shaft.

Preferably, the locking device comprises a pawl, a ratchet wheel and a spring; the pawl is fixed, the ratchet wheel rotates along with the driving shaft, and the spring action ensures that the pawl is contacted with the teeth of the ratchet wheel.

Based on the technical scheme, when the valve is opened and closed, the steel wire rope is under the action of larger torque, and the steel wire rope has certain elasticity, so that when the valve is remotely operated and the upper valve operating hand wheel rotates for a certain angle, the lower valve driving worm shaft may not rotate, and at the moment, if the upper valve operating hand wheel is loosened, the upper valve operating hand wheel may reversely rotate back to the original position under the action of the elasticity of the steel wire rope, so that the opening and closing speed of the valve is influenced. Therefore, a locking wheel, namely a ratchet wheel and pawl mechanism is arranged at the head wheel, the ratchet wheel rotates along with the driving shaft, the pawl is fixed, the pawl is ensured to be in contact with ratchet wheel teeth under the action of a spring, the hand wheel is prevented from reversing under the elastic action of a steel wire rope, and the valve is ensured to be opened and closed smoothly. The ratchet wheel can be used for opening and closing the valve in a bidirectional manner.

Furthermore, the fixed bolster can dismantle fixed bearing frame on including bottom plate, the bottom plate, fixed axle sleeve on the drive shaft, the axle sleeve passes through one or more bearing connection bearing frame, bearing frame both ends are fixed upper bearing gland, lower bearing gland respectively.

Preferably, the bearing is an angular contact ball bearing.

Further, the valve remote actuating mechanism further comprises an actuating end support, the actuating end support is a U-shaped support, one side of the U-shaped support is detachably fixed with the flexible shaft, and the other side of the U-shaped support is detachably fixed with the valve body.

Furthermore, the valve operation hand wheel, the driving shaft, the operation end coupler and the flexible shaft are all arranged in two numbers, and the fixed support is respectively connected with the two driving shafts in a rotating mode.

To the utility model discloses a working process: when the valve needs to be opened and closed, the upper valve operation hand wheel is manually operated, the hand wheel drives the driving shaft to rotate in the fixed support (rolling bearing seat), and the driving shaft is connected with the flexible shaft through the coupler and drives the flexible shaft to rotate. The other end of the flexible shaft is connected with the valve driving worm shaft through a coupler, and the flexible shaft rotates to drive the worm shaft to rotate so as to complete the opening and closing action of the valve. The original operation hand wheel (on the lower layer) at the valve is kept still, and the original operation hand wheel can be used for realizing the opening and closing functions of the valve in case of failure of the remote actuating mechanism.

The utility model has the advantages that: the flexible shaft remote driving valve has a simple and reliable structure, can effectively transfer torque, adopts the flexible shaft to remotely drive the valve to open and close, and reduces the possibility of accidental injury to operators under special working conditions to a certain extent.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the locking device;

FIG. 3 is a schematic structural view of a steel wire rope structure inside a flexible shaft;

FIG. 4 is a schematic structural view of a metal hose outside a flexible shaft;

FIG. 5 is a schematic view of a flexible shaft joint

FIG. 6 is a schematic structural view of an operation terminal in embodiment 2;

FIG. 7 is a top view of the operating end of example 2;

FIG. 8 is a schematic diagram showing the structure of an execution terminal in embodiment 2;

in the figure: 1. the valve comprises a valve operating hand wheel, 2, a driving shaft, 2.1, a shaft sleeve, 2.2, a bearing, 2.3, a bearing seat, 2.4, an upper bearing gland, 2.5, a lower bearing gland, 3, a fixed support, 3.1, a bottom plate, 4, an operating end coupler, 5, a flexible shaft, 6, an actuating end coupler, 7, a valve driving worm shaft, 8, a valve actuating hand wheel, 9, a position indicating nut, 10, a guide strip, 11, a position indicating scale, 12, a locking device, 12.1, a pawl, 12.2, a ratchet wheel, 13, a support, 14, a round nut, 15, a stop washer, 16, a fastening screw, 17, an actuating end support, 18 and a valve body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

A valve remote actuating mechanism comprises a valve operating hand wheel 1, a driving shaft 2, a fixed support 3, an operating end coupling 4, a flexible shaft 5, an actuating end coupling 6, a valve driving worm shaft 7 and a valve actuating hand wheel 8; valve operation hand wheel 1 connects 2 one ends of drive shaft, and drive shaft 2 rotates with fixed bolster 3 to be connected, and the 2 other ends of drive shaft are connected to 5 one ends of flexible axle through operation end shaft coupling 4, and the 5 other ends of flexible axle are connected to valve drive worm axle 7 through execution end shaft coupling 6, and valve drive worm axle 7 drives valve execution hand wheel 8 and does the switching action.

Further, the flexible shaft 5 is internally provided with a steel wire rope structure, the metal hose is externally provided with a metal hose, lubricating grease is arranged between the steel wire rope and the hose, and flexible shaft joints are arranged at two ends of the steel wire rope.

Further, 2 external diameters of drive shaft are equipped with the screw thread, show position nut 9 and drive shaft threaded connection, installation gib block 10 on the fixed bolster 3 is equipped with on the gib block 10 and shows position scale 11, show position nut 9 and gib block 10 sliding connection.

Further, a locking device 12 is provided on the drive shaft 2.

Preferably, the locking device 12 comprises a pawl 12.1, a ratchet wheel 12.2 and a spring; the pawl 12.1 is fixed, the ratchet wheel 12.2 rotates along with the driving shaft 2, and the spring action ensures that the pawl is contacted with the ratchet wheel teeth.

Further, the fixed bolster 3 includes that the bottom plate 3.1, the bottom plate 3.1 are gone up and to dismantle fixed bearing frame 2.3, fixed axle sleeve 2.1 is gone up to drive shaft 2, axle sleeve 2.1 connects bearing frame 2.3 through one or more bearing 2.2, fixed upper bearing gland 2.4, lower bearing gland 2.5 are respectively held at bearing frame 2.3 both ends.

Preferably, the bearing 2.2 is an angular contact ball bearing.

Furthermore, the valve operating handwheel 1, the driving shaft 2, the operating end coupling 4 and the flexible shaft 5 are all provided with two parts, and the fixed support 3 is respectively connected with the two driving shafts 2 in a rotating way.

Example 2

Further, a locking device 12 is provided on the drive shaft 2.

Preferably, the bearing 2.2 is an angular contact ball bearing.

Further, the valve remote actuating mechanism further comprises an actuating end support 17, the actuating end support 17 is a U-shaped support, one side of the U-shaped support is detachably fixed with the flexible shaft 5, and the other side of the U-shaped support is detachably fixed with the valve body 18.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A valve remote actuator, its characterized in that: the valve comprises a valve operating hand wheel, a driving shaft, a fixed support, an operating end coupler, a flexible shaft, an execution end coupler and a valve body; the valve operation hand wheel is connected with one end of a driving shaft, the driving shaft is rotationally connected with the fixed support, the other end of the driving shaft is connected to one end of a flexible shaft through an operation end coupler, and the other end of the flexible shaft is connected to the valve body.

2. A valve remote actuator as defined in claim 1, wherein: the flexible shaft is connected to the valve driving worm shaft through the execution end coupler, and the valve driving worm shaft drives the valve execution hand wheel to perform opening and closing actions.

3. A valve remote actuator as defined in claim 1, wherein: the flexible shaft is internally provided with a steel wire rope structure, the metal hose is externally provided with a metal hose, lubricating grease is arranged between the steel wire rope and the hose, and flexible shaft joints are arranged at two ends of the steel wire rope.

4. A valve remote actuator as set forth in claim 3 wherein: the end of the driving shaft connected with the flexible shaft is of a square section and is matched and connected with a square hole in the flexible shaft joint to transmit torque, and a square hole in the flexible shaft joint at the other end of the flexible shaft is matched and connected with the end of the square section shaft of the valve driving worm shaft to transmit torque.

5. A valve remote actuator as defined in claim 1, wherein: the outer diameter of the driving shaft is provided with threads, the position indicating nut is in threaded connection with the driving shaft, a guide strip is arranged on the fixed support, a position indicating scale is arranged on the guide strip, and the position indicating nut is in sliding connection with the guide strip.

6. A valve remote actuator according to any of claims 1 to 5, wherein: and a locking device is arranged on the driving shaft.

7. A valve remote actuator as defined in claim 6, wherein: the locking device comprises a pawl, a ratchet wheel and a spring; the pawl is fixed, the ratchet wheel rotates along with the driving shaft, and the spring action ensures that the pawl is contacted with the teeth of the ratchet wheel.

8. A valve remote actuator according to any of claims 1 to 5, wherein: the fixed bolster can dismantle fixed bearing frame on including bottom plate, the bottom plate, fixed axle sleeve on the drive shaft, the axle sleeve passes through one or more bearing connection bearing frame, bearing frame both ends are fixed upper bearing gland, lower bearing gland respectively.

9. A valve remote actuator as defined in claim 8, wherein: the bearing is an angular contact ball bearing.

10. A valve remote actuator according to any of claims 1 to 5, wherein: the valve remote actuating mechanism further comprises an actuating end support, the actuating end support is a U-shaped support, one side of the U-shaped support is detachably fixed with the flexible shaft, and the other side of the U-shaped support is detachably fixed with the valve body.