Two speed hydraulic cylinder for valve
A technology of hydraulic cylinder and valve, applied in the field of valve two-speed hydraulic cylinder, can solve the problems of unclean liquid, piston seal wear and disturbance in the hydraulic cylinder, etc., and achieve the effect of simple use reliability and improved use reliability.
Inactive Publication Date: 2007-07-18
DAZHONG VALVE FACTORY ZHEJIANG PROV
View PDF9 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This type of valve has the following problems: First, the liquid in the hydraulic cylinder is not clean, and various sundries in the valve body may enter the hydraulic cylinder at any time, and the liquid itself may not be clean, such as the valve that transports various types of water, causing the hydraulic cylinder to The inner piston seal is worn, the cylinder wall is worn, etc., which will lead to leakage at both ends of the piston, and the hydraulic cylinder will lose its drive control power and fail, resulting in failure of the pipeline system; second, the large and small valve plates are complicated to match, and there are many sealing levels. The third is that the floating large valve plate will occupy a certain flow space, which will cause the liquid in the valve body to vibrate when it flows, resulting in greater resistance, and causing pressure fluctuations in the liquid, which in turn will generate pipeline noise and disturbance, affecting the safety of the pipeline system
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] The present invention consists of a cylinder body 1, sealing rings 2, 5, 21, a piston 3, a slow chamber 4, a piston rod 6, a first pipe joint 7, a second pipe joint 20, a lower end cover 8, an upper end cover 18, a pipe fitting 9, Gaskets 10, 17, speed control valve 11, transition chamber 12, connecting pin 14, fast chamber 15, connecting screw 16, nuts 13, 19 and signal rod 22, piston 3 is equipped with sealing ring 2, and piston 3 fits through the hole Installed on the piston rod 6 and tightened with nut 13, the signal rod 22 is connected with the piston rod 6 through the connecting pin 14, the piston 3 is put into the cylinder body 1, the lower end cover 8 is equipped with a sealing ring 5, and the lower end cover 8 passes through the piston rod 6 is pressed on the end surface of the cylinder body 1, the upper end cover 18 is equipped with a sealing ring 21, the upper end cover 18 passes through the signal rod 22 and is pressed on the other end surface of the cylinder...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention is one double speed hydraulic cylinder for fast and slow drive and control of valve. The double speed hydraulic cylinder consists of cylinder, sealing ring, piston, slow cavity, piston rod, upper end cap, sealing pad, speed regulating valve, transition cavity, fast cavity and signal rod. The lower end cap through the piston rod presses on one end of the cylinder, the upper end cap through the signal rod presses on the other end of the cylinder. Inside the cylinder, there are fast cavity, transition cavity and slow cavity, the lower end has thread hole communicated with the slow cavity, and the upper end has thread hole communicated with the fast cavity. The double speed hydraulic cylinder of the present invention is used in valve control, and may be matched with only one valve plate to realize slow opening, fast opening, fast closing and slow closing. The cylinder is filled with oil, and is clean, simple and reliable.
Description
Technical field: [0001] The invention belongs to a valve double-speed hydraulic cylinder with fast and slow drive and control. Background technique: [0002] In the self-operated multi-functional hydraulic control valve with two-stage closing, a single-speed hydraulic cylinder is generally used to cooperate with the large and small valve plates to realize fast closing and slow closing, so as to ensure that the pump is closed by fast and slow two-stage closing cooperation. Realize the function of eliminating water hammer and check function when closing the valve. The large valve plate of this type of valve can float in the valve body, and its position is determined by the liquid flow direction and pressure in the valve body, while the small valve plate generally communicates with the transmission mechanism. The single-speed hydraulic cylinder is connected, driven and controlled by the hydraulic cylinder, and the two chambers of the hydraulic cylinder communicate with the inle...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/122
Inventor 李志鹏金志渊林加钱林永通
Owner DAZHONG VALVE FACTORY ZHEJIANG PROV