Stent-mounted controller through the plug valve to directly control the direction of where the stent, at the same time, sensor data collection to other conditions and the central controller to send stent. Hydraulic stent system in the receive signal, the process will be completed the following actions:
(1) or two column moves from the direction of plug-mounted control valve 8, when the direction of 8 in the pilot valve solenoid valve 1YA electricity, 2YA power, the valve switch to the left, and four 2-way valve in the b and d pass chamber pressure on the oil, in a closed state, a and c of the fuel tank cavity pass, is turned on to provide pressure pumping stations by the 2-way valve fluid c and pilot controlled check valve (one-way hydraulic control at this time valve in the three pilot valve 2 position in the icon, working with ordinary one-way valve) in the 2-way valve into the column of the inferior vena cava, superior vena column emulsion as the direction of the valve 8 in a two-way valve back to liquid column out to achieve or aircraft.
Column-free space under the oil on the road with plug-in type pilot controlled check valve and relief valve control valve components, access to the roof when the top beam, column, under the pressure chamber to the unloading station pressure, fluid-controlled single - to the valve closed, frame setting load reached; thereafter, with the roof of the sinking, so that the next column of the pressure chamber of the relief valve opening pressure is set, the unloading relief valve to open, under the column and reducing the pressure chamber When the column under the reduced pressure chamber to the closed pressure relief valve, relief valve closed. Since then, the process will repeat, so columns under the cavity of the pressure relief valve is set in the vicinity of changes in value, frame work to support the state of resistance in the Carse. Cartridge valve as a result of faster response to pressure changes in the inferior vena Lizhu small, stop the constant support and good support, in favor of the management of roof.
The system rack or in the process of stent was also realized early support, resistance and constant resistance by three stages, setting load pressure on the size of a decision by the pumping station, the size of the work of the resistance is set by the pressure relief valve of the decision.
(2) When the aircraft down so that the direction of cartridge-type 8 in the pilot valve solenoid valve 2YA electricity, 1YA power, the valve switch to the right place, four-way valve b and c of a pass on the cavity pressure oil , in a closed state, b and d pass on the fuel tank cavity, in the open state, fluid pressure provided by pumping stations by the two-way valve into the column b of the cavity, at the same time, pilot controlled check valve in the pilot valve to switch to the right place so that the second one-way valve on the fuel tank cavity pass, is turned on, the oil column by the inferior vena pilot controlled check valve in the back of two-way valve fluid, post back, to achieve lower frame.
After the plane down to the direction of the pilot valve valve valve placed in the middle icon (1YA and 2YA are off), At this point, the second four-way valve on the oil pressure chamber are Qualcomm, in a closed state, two-column Oil has also been closed cavity, a high degree of support to stay in position, ready to shift planes
(3) push the slide and shift aircraft movements over jack-type plug-in from the direction control valve 9, when the direction of the pilot valve in the valve placed in the right place (4YA electricity, 3YA power) and the left bit (3YA electricity, 4YA off when), respectively, over control of the jack rod and back out to achieve and Moving onto slide. Moves over after the completion of the pilot valve will be placed in the median (3YA and 4YA power), four-way valve 2 e, f, g, h are the cavity pass the pressure on oil, in a closed state, passage of the two cavity jack oil Road were closed to stop the over action. Upon receipt of new instructions, the stent will begin circulating next move.
When the direction of the electromagnetic valve pilot valve manual valve replaced, the cartridge valve that can be used to manually control the design of the existing hydraulic system of the stent in order to improve the work of stent performance, increase the reliability of its work. Analysis showed that the design of cartridge valve with electro-hydraulic control of the hydraulic system support, support to meet the work requirements, based on the same principle, can be used to design Cartridge Valves of all types and models of the hydraulic system of hydraulic support.
3, the feasibility analysis
(1) Plug-in Valve for the performance and characteristics of the working conditions of hydraulic supports to meet their application requirements.
(2) modern stent used in the hydraulic system of a variety of functions of valves corresponding with the realization of Cartridge Valves, Cartridge Valves used to design all types and models of electro-hydraulic control system of hydraulic support.
(3) Cartridge Valve is easy to integrate the advantages of the control valve allows a more compact structure, easy to install.
(4) has a mature electro-hydraulic control system and explosion-proof type of electro-hydraulic control components available.
(5) Plug-in Valve components and production has become common serialization, and the manufacture and use of a relatively low cost.
Cartridge Valves with the design and assembly of hydraulic support systems, the technical barrier-free, economically viable.
4, Conclusion
(1) Plug-in to facilitate the realization of electro-hydraulic valve control, through-flow capacity and the advantages of fast response in particular to adapt to the use of electro-hydraulic control of the hydraulic support condition, the stent design with its hydraulic system, superior performance, to meet the application requirements and rapidly shifting needs of aircraft, the achievement of universal, and serialization and standardization.
(2) Cartridge Valves excellent sealing performance, but also for the use of water in the water medium in the application of stents.
(3) Plug-in Valve's anti-pollution ability, in the medium when more dirty and difficult to plug, less wear and tear to extend the service life of valve-type components, reducing failures, increase the support the work of the hydraulic system reliability.
(4) Plug-in with the design of electro-hydraulic control valve of the hydraulic support systems, comply with production requirements, in line with the fully mechanized coal mining face roof support technology and fluid transmission technology trends, technical barrier-free, economically viable and worth promoting. ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve Three way ball valve V Type Ball Valve
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