A threaded cartridge pilot proportional reversing valve
A proportional reversing valve, threaded cartridge technology, applied in the direction of fluid pressure actuation devices, servo motor components, mechanical equipment, etc. The output flow is unstable and other problems, to achieve the effect of convenient operation, beautiful appearance and easy design
Active Publication Date: 2017-07-07
江苏菲尔特液压机械有限公司
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Problems solved by technology
However, the existing pilot-operated proportional reversing valve is prone to external leakage, and its anti-oil pollution ability is weak, which affects the left and right movement of the spool of the proportional reversing valve and makes the output flow unstable.
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Embodiment Construction
[0014] Below in conjunction with accompanying drawing, the present invention will be further described
[0015] A threaded plug-in type pilot proportional reversing valve, including a plug 1, a valve body 4, a transmission rod 15, and a cylinder body 16, and a control port X5 and a control port Y6 are arranged between the valve body 4 and the cylinder body 16 , it is characterized in that: the transmission rod 15 is fixedly connected with the lower spring seat 3, the spring seat 2 and the spring seat 19 are arranged between the plug 1 and the upper spring seat 18, and the upper spring seat 18 and the lower spring seat 3 are provided with a compression spring 17, the transmission rod 15 and the main valve core 14 are connected and fixed in the form of mortise joints, and the main valve core 14 and the valve sleeve 12 are arranged in the form of positive cover , the valve sleeve 12 is provided with A port 7, P port 8, and B port 9 from top to bottom, and the lower end of the mai...
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Provided is a screw-in cartridge type pilot proportional directional valve. The screw-in cartridge type pilot proportional directional valve comprises an end cap, a valve body, a transmission rod and a cylinder body. A control port X and a control port Y are arranged between the valve body and the cylinder body. The transmission rod is connected and fixed with a main valve core in the joggling manner. The main valve core and a valve sleeve are arranged in an over-lapped mode. The valve sleeve is provided with an A port, a P port and a B port from the top to the bottom. The lower end of the main valve core is provided with an oil return T port. The valve sleeve, near the A port and the B port, is provided with a throttling port of a valve sleeve I and a throttling port of a valve sleeve II. The screw-in cartridge type pilot proportional directional valve has following beneficial effects: the screw-in cartridge type pilot proportional directional valve is extensively applied to hydraulic control over ships, engineering machines and the like and has the primary function of controlling movement direction and movement speed of hydraulic actuator elements; rigid adjustments can be made to movement speed of hydraulic actuator elements by combination with a pressure compensated control valve; load changes exert no influence; and controllability of the actuator elements is improved.
Description
technical field [0001] The invention relates to a hydraulic control actuator, in particular to a threaded cartridge type pilot proportional reversing valve. Background technique [0002] In the hydraulic system, the reversing valve is one of the main components. We often need to implement the speed conversion of the actuator. As far as the existing hydraulic control device is concerned, it is generally solved by manually adjusting the flow valve, which is relatively complicated and the degree of automation is not high. There is also a combination of multiple reversing valves and flow valves to achieve the purpose of speed control. However, due to the use of too many valves in this method, the operation is complicated, mistakes are prone to occur, and accidents are caused. Moreover, the equipment is large in size and expensive. High, the system investment is also large. At present, a pilot-operated proportional reversing valve has appeared on the domestic market. Its functi...
Claims
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IPC IPC(8): F15B13/02
CPCF15B13/02F15B2013/004
Inventor 沈栋炼
Owner 江苏菲尔特液压机械有限公司