Valve hydraulic control device
Technical Field
The utility model relates to the technical field of valves, in particular to a valve hydraulic control device.
Background
At present, the valve is a control component in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, splitting flow or overflow pressure relief and the like, and is used for various valves in the fluid control system from the simplest stopping valve to the extremely complex automatic control system, and the variety and the specification are quite various.
The valve shaft of the valve driven by the hydraulic pressure of oil is rotated, the valve shaft drives the valve plate to close the flowing channel of the valve body, and in the use occasions of some valves, the valve is required to be opened and closed in a variable speed according to the requirements of working conditions, for example, the valve is provided with the following application number: the document CN202020434148.7 teaches that when the valve is closed, in order to prevent the occurrence of water hammer when the valve is closed, the speed cannot be controlled when the valve is closed, if the valve body is closed too fast, the flow break occurs in the pipe, the water hammer in the pipe is caused, and the water hammer damages the pipeline system.
Disclosure of Invention
The utility model aims to provide a valve hydraulic control device which can drive a valve shaft of a valve to drive the valve to close and rotate, realize quick and corresponding valve opening and also meet the requirement of adjustable valve closing speed, so that the generation probability of water hammer phenomenon is reduced, and the safety of the whole pipeline is improved.
Embodiments of the present utility model are implemented as follows:
in a first aspect, an embodiment of the present application provides a valve hydraulic control device, including the framework, the inside rotation of framework is connected with the valve axle sleeve, installs the rocking arm on the valve axle sleeve, and the pneumatic cylinder that promotes rocking arm rotation usefulness is installed to the bottom of framework, and the weight pole is installed to the side mounting of rocking arm, and the weight is installed to the other end of weight pole, fixedly connected with valve shaft in the valve axle sleeve.
In some embodiments of the present utility model, a rotary disk is mounted on the valve shaft sleeve, an opening pointer is mounted on the rotary disk, and an opening indicator for matching the opening pointer is mounted on the frame.
In some embodiments of the present utility model, the rotary plate is provided with a bump, and the frame is provided with a travel switch for matching with the bump.
In some embodiments of the utility model, a manual valve opening device is mounted on a side surface of the frame.
In some embodiments of the present utility model, a support plate is installed at the bottom of the manual valve opening device, and the support plate is connected to the frame.
In some embodiments of the present utility model, a threaded rod is installed at the bottom of the rocker arm, a through jack through which the threaded rod passes is installed in the frame body, and a nut is screwed on the threaded rod.
In some embodiments of the present utility model, the weight has a plurality of detachable weights thereon.
In some embodiments of the present utility model, the plurality of balancing weights are all integrally connected by fasteners.
Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:
in the utility model, the valve is controlled to be opened by controlling the starting and stopping of the hydraulic cylinder, compared with the valve body which is manually rotated to close the valve, the structure is implemented to save more physical force, and in order to prevent the water hammer phenomenon from occurring when the valve body is opened, the valve body is opened and correspondingly fast and slowly closed when the valve body is closed, so that the occurrence of the water hammer phenomenon is avoided, and finally the speed of water flow in the valve is gradually changed from fast to zero, thereby not only meeting the requirement of fast closing a pipeline, but also slowly closing the pipeline and eliminating the damage of the water hammer to a pipeline system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;
FIG. 2 is a front view of the embodiment of the present utility model shown in FIG. 1;
FIG. 3 is a rear view of the embodiment of the present utility model shown in FIG. 1;
fig. 4 is a schematic partial structure of fig. 1 according to an embodiment of the present utility model.
Icon: 1-frame body, 2-valve shaft sleeve, 3-rocker arm, 4-hydraulic cylinder, 5-weight rod, 6-weight, 61-weight block, 7-rotary disc, 8-opening pointer, 9-opening indication board, 10-collision block, 11-travel switch, 12-manual valve opening device, 13-threaded rod, 14-nut and 15-supporting plate.
Detailed Description
It should be noted that, if the terms "upper", "lower", "left", "right", "vertical", etc. indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship conventionally put in use of the inventive product, it is only for convenience of describing the present utility model and simplifying the description, and it does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Example 1
Referring to fig. 1-4, fig. 1 is a schematic overall structure, fig. 2 is a front view of fig. 1, fig. 3 is a rear view of fig. 1, and fig. 4 is a schematic overall structure of fig. 1 after the front plate is hidden; the embodiment provides a valve hydraulic control device, it includes framework 1, and the inside rotation of framework 1 is connected with valve shaft cover 2, installs rocking arm 3 on the valve shaft cover 2, and hydraulic cylinder 4 for promoting rocking arm 3 rotation is installed to the bottom of framework 1, and weight pole 5 is installed to rocking arm 3's side, and weight 6 is installed to weight pole 5's the other end, fixedly connected with valve shaft in the valve shaft cover 2.
Before use, the valve shaft of the valve body is connected with the valve shaft sleeve 2 of the device, the frame body 1 is fixed on the flange of the valve shaft, the whole adopts a lever principle mode, the hydraulic cylinder 4 pushes the weight rod 5 to rotate around the center of the valve shaft sleeve 2, the weight 6 at the other end of the weight rod 5 is lifted in the rotating process, the other end of the weight rod rotates the valve shaft, and the valve shaft opens a valve body channel; the valve body passage is slowly closed by means of the counter weight of the heavy hammer 6, and the concrete mode is as follows: when the valve is opened, the hydraulic cylinder 4 is started, the hydraulic cylinder 4 takes the frame body 1 as a support, then the piston rod of the hydraulic cylinder 4 pushes the rocker arm 3 hinged with the hydraulic cylinder 4 to rotate, the rocker arm 3 drives the connected valve shaft sleeve 2 to rotate on the frame body 1, the valve shafts connected in the valve shaft sleeve 2 are synchronously driven to rotate, and finally the valve shaft drives the valve plate to open the valve; otherwise, if the valve is closed, the hydraulic cylinder 4 stops working, the rocker arm 3 is driven to reversely rotate under the action of the heavy hammer 15, at the moment, the piston of the hydraulic cylinder 4 slowly retreats to the initial position, the valve shaft sleeve 2 and the valve shaft are synchronously rotated, and finally the valve shaft drives the valve plate to close the valve.
In the above process, the hydraulic cylinder 4 is controlled to start and stop to control the valve to open and close, the valve is closed relative to the manual rotation valve body, the structure is implemented to save more physical force, in order to prevent the water hammer phenomenon when the valve is closed, the valve body is opened and is quickly corresponding, the valve body is closed slowly, the water hammer phenomenon is correspondingly generated, the speed of water flow in the valve is gradually changed from quick to zero, and the structure further meets the requirements of pump valve linkage, remote control, on-site control or emergency closing devices for accident valves.
Example 2
The present embodiment is developed based on the previous embodiment, as shown in fig. 1-4, a rotary disc 7 is installed on the valve shaft sleeve 2, the rotary disc is fixedly installed on the valve shaft sleeve 2, a channel for installing a valve shaft inside the valve shaft sleeve 2 is protected, an opening pointer 8 is installed on the rotary disc 7, an opening indicator 9 matched with the opening pointer 8 is installed on the frame body 1, and the initial position and the final position of the opening pointer 8 on the opening indicator 9 can be observed in time, so that the rotating angle change of the valve shaft sleeve 2 can be obtained, and the closing state of the controlled valve can be conveniently controlled.
As a preferred implementation mode, the rotary disc 7 is provided with the bump 10, the frame body 1 is provided with the travel switch 11 matched with the bump 10, the rotation angle change of the valve shaft sleeve 2 can be timely corresponding, the valve shaft sleeve 2 drives the rotary disc 7 and the bump 10 to rotate, the travel switch 11 is triggered in the rotation process, the travel switch 11 controls the hydraulic cylinder 4 to stop working, the rotation angle of the valve shaft sleeve 2 is controllable through the cooperation of the travel switch 11 and the bump 10, and the rotation angle change travel length of the valve shaft sleeve 2 can be adjusted only by adjusting the installation position of the bump 10 on the rotary disc 7.
As a preferred embodiment, the side surface of the frame body 1 is provided with a manual valve opening device 12, the manual valve opening device 12 can be selected to provide hydraulic kinetic energy for the hydraulic cylinder 4, and the manual valve opening device 12 can be selected to be a manual supercharging device; in order to improve the stress stability of the manual valve opening device 12, a supporting plate 15 is arranged at the bottom of the manual valve opening device 12, and the supporting plate 15 is connected to the frame body 1; the bottom of the rocker arm 3 is provided with a threaded rod 13, the frame body 1 is internally provided with an insertion hole for the threaded rod 13 to pass through, the threaded rod 13 is in threaded connection with a nut 14, the initial rotation position of the valve shaft sleeve 2 can be adjusted by adjusting the position of the nut 14 on the threaded rod 13, the initial position of the valve shaft for closing the valve can be controlled, and whether the valve is completely closed can be adjusted; meanwhile, the counter weight 6 is provided with a plurality of detachable balancing weights 61 so as to be used for adjusting the closing speed of the valve body according to actual demands, and the balancing weights 61 are connected into a whole through fasteners, so that the disassembly and assembly of the balancing weights 61 are met, and the counterweight demands are met.
In summary, the hydraulic cylinder 4 is started and stopped to control the valve to open, the weight of the weight 6 is used to close the valve, the weight requirement of the weight 6 is changed, the closing speed of the valve in the environment is regulated, the valve is closed by rotating the valve body manually, the process is fast corresponding when the valve body is opened, the valve is slowly closed when the valve body is closed subsequently, the occurrence of water hammer is reduced, and finally the speed of water flow in the valve is gradually changed from fast to zero, meanwhile, the device can be used for an emergency closing device of an accident valve; the valve shaft sleeve 2 is also provided with an opening pointer 8 and an opening indication board 9, the initial position and the end position of the opening pointer 8 on the opening indication board 9 can be observed, the rotating angle change information of the valve shaft sleeve 2 is read, so that the closing state of the controlled valve is conveniently controlled, finally, a plurality of balancing weights 61 are connected together through fasteners, and the total weight of the balancing weights 61 can be changed according to actual needs by rotating the fasteners.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.