Hydraulic control device of butterfly valve
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to a hydraulic control device of a butterfly valve.
Background
The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The butterfly valve is also called as a flap valve, and is a valve which has a simple structure and can be used for opening and closing low-pressure pipeline media. The pipe is mainly used for cutting and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly valve opening and closing piece in the valve body, so that the purpose of opening and closing or adjusting is achieved.
The existing hydraulic butterfly valve generally adopts a hydraulic oil cylinder to directly drive a valve rod to rotate, so that the valve rod drives a valve plate to rotate, the opening and the closing of the valve are realized, the requirement on the output power of the hydraulic oil cylinder is higher, the stability of the valve plate is lower,
Disclosure of utility model
The utility model aims to provide a hydraulic control device of a butterfly valve, which solves the problems in the background art.
The hydraulic control device for the butterfly valve comprises a valve body, wherein a housing is fixedly connected to the top of the valve body, a valve rod is rotatably arranged in the housing, a valve plate is fixedly connected to the bottom of the valve rod, a cylinder body is fixedly connected to one side of the housing, a movable frame is arranged in the cylinder body, pistons are fixedly connected to two ends of the movable frame, the pistons are slidably connected with the inner wall of the cylinder body, tooth grooves are formed in the inner bottom wall of the movable frame, a gear is meshed with the top of each tooth groove, a rotating shaft is fixedly connected to one side of each gear, one end of each rotating shaft extends into the housing and is fixedly connected with a worm, a worm wheel is meshed with one side of each worm, and the worm wheel is fixedly arranged on the valve rod.
As a preferred embodiment, the valve body is provided with flanges on both sides.
As a preferred embodiment, a sealing ring is fixedly connected to the edge of the valve plate.
As a preferred implementation mode, both ends of the top of the cylinder body are provided with oil inlet and oil outlet.
As a preferred embodiment, a bearing is fixedly arranged in the middle of one side of the cylinder body, and the rotating shaft is rotatably arranged in the bearing.
As a preferred embodiment, both ends of the cylinder body are fixedly provided with end caps by bolts.
Compared with the prior art, the utility model has the beneficial effects that:
According to the hydraulic control device of the butterfly valve, through the arrangement of the cylinder body, the movable frame, the piston, the tooth socket, the gear, the rotating shaft, the worm and the worm wheel, when the valve is opened and closed, oil can be injected into the cylinder body through one oil inlet and outlet, the oil in the cylinder body is discharged through the other oil inlet and outlet, the piston drives the movable frame to move in the cylinder body, the movable frame drives the gear to rotate through the tooth socket, the gear drives the rotating shaft to rotate, the rotating shaft drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the valve rod to rotate, the valve rod drives the valve plate to rotate, the opening and closing of the valve are realized, and the output power requirement of the hydraulic oil cylinder is reduced;
The hydraulic control device of the butterfly valve can improve the stability of the valve plate by utilizing the irreversibility of worm and worm gear transmission.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is a schematic view of the cylinder block according to the present utility model;
Fig. 4 is a schematic view of the internal structure of the cylinder body of the present utility model.
The valve comprises a valve body 1, a valve 2, a housing 3, a valve rod 4, a valve plate 5, a cylinder body 6, a movable frame 7, a piston 8, tooth grooves 9, gears 10, a rotating shaft 11, a worm, 12, a worm wheel 13, a flange 14, a sealing ring 15, an oil inlet and outlet 16, a bearing 17 and an end cover.
Detailed Description
The utility model is further described below with reference to examples.
The following examples are illustrative of the present utility model but are not intended to limit the scope of the utility model. The conditions in the examples can be further adjusted according to specific conditions, and simple modifications of the method of the utility model under the premise of the conception of the utility model are all within the scope of the utility model as claimed.
Referring to fig. 1-4, the utility model provides a hydraulic control device of a butterfly valve, which comprises a valve body 1, wherein flanges 13 are arranged on two sides of the valve body 1, the butterfly valve and a fluid pipeline can be installed through the flanges 13, a housing 2 is fixedly connected to the top of the valve body 1, a valve rod 3 is rotatably installed in the housing 2, a valve plate 4 is fixedly connected to the bottom of the valve rod 3, a sealing ring 14 is fixedly connected to the edge of the valve plate 4, and the sealing performance of the valve plate 4 can be improved through the arrangement of the sealing ring 14.
One side of the housing 2 is fixedly connected with a cylinder body 5, two ends of the top of the cylinder body 5 are respectively provided with an oil inlet and outlet 15, the inside of the cylinder body 5 is provided with a movable frame 6, two ends of the movable frame 6 are respectively fixedly connected with a piston 7, the piston 7 is in sliding connection with the inner wall of the cylinder body 5, the inner bottom wall of the movable frame 6 is provided with a tooth socket 8, the top of the tooth socket 8 is meshed with a gear 9, one side of the gear 9 is fixedly connected with a rotating shaft 10, one end of the rotating shaft 10 extends into the housing 2 and is fixedly connected with a worm 11, one side of the worm 11 is meshed with a worm wheel 12, the worm wheel 12 is fixedly arranged on the valve rod 3, and through the arrangement of the cylinder body 5, the movable frame 6, the piston 7, the tooth socket 8, the gear 9, the rotating shaft 10, the worm 11 and the worm wheel 12, when the valve is opened and closed, oil can be injected into the cylinder body 5 through one oil inlet and outlet 15, oil in the cylinder body 5 is discharged through the other oil inlet and outlet 15, the piston 7 drives the movable frame 6 to move in the cylinder body 5, the movable frame 6 drives the gear 9 to rotate through the tooth groove 8, the gear 9 drives the rotating shaft 10 to rotate, the rotating shaft 10 drives the worm 11 to rotate, the worm 11 drives the worm wheel 12 to rotate, the worm wheel 12 drives the valve rod 3 to rotate, the valve rod 3 drives the valve plate 4 to rotate, the opening and closing of the valve are realized, the output power requirement of the hydraulic oil cylinder is reduced, and the irreversibility of the transmission of the worm 11 and the worm wheel 12 is utilized, so that the stability of the valve plate 4 can be improved.
The bearing 16 is fixedly installed in the middle of one side of the cylinder body 5, the rotating shaft 10 is rotatably installed in the bearing 16, and the stability of the rotating shaft 10 during rotation can be improved through the arrangement of the bearing 16.
The two ends of the cylinder body 5 are fixedly provided with the end covers 17 through bolts, and the two ends of the cylinder body 5 can be disassembled through the arrangement of the end covers 17, so that the inside of the cylinder body 5 is convenient to maintain.
The working principle and the use flow of the utility model are that firstly, through the arrangement of the cylinder body 5, the movable frame 6, the piston 7, the tooth socket 8, the gear 9, the rotating shaft 10, the worm 11 and the worm wheel 12, when the valve is opened and closed, oil can be injected into the cylinder body 5 through one oil inlet and outlet 15, the oil in the cylinder body 5 is discharged through the other oil inlet and outlet 15, the piston 7 drives the movable frame 6 to move in the cylinder body 5, the movable frame 6 drives the gear 9 to rotate through the tooth socket 8, the gear 9 drives the rotating shaft 10 to rotate, the rotating shaft 10 drives the worm 11 to rotate, the worm 11 drives the worm wheel 12 to rotate, the worm wheel 12 drives the valve rod 3 to rotate, the valve rod 3 drives the valve plate 4 to rotate, the opening and closing of the valve are realized, the output power requirement of the hydraulic cylinder is reduced, and the irreversibility of the transmission of the worm 11 and the worm wheel 12 is utilized, and the stability of the valve plate 4 can be improved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.