Logic cartridge valve for buffering and stopping hydraulic fluid flow
A technology of hydraulic fluid and cartridge valves, which is applied in the direction of fluid pressure actuation devices, fluid pressure actuation system components, servo motor components, etc. It can solve the problems that the flow buffer and cut-off effect cannot be realized at the same time, and large vibrations can be solved. Vibration problems, effects of eliminating vibration situations
Pending Publication Date: 2020-11-17
济南济力机械设备有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a hydraulic fluid flow buffer and cut-off logic cartridge valve, which has the adjustable buffer control of hydraulic system flow, and also has the function of maintaining pressure; the advantage of eliminating the vibration when the oil cylinder is stopped, and solving the existing problems There is a problem that the hydraulic valve can only realize the complete cut-off of the flow, and the oil cylinder stops running directly, resulting in particularly large vibration, and cannot realize the flow buffer and cut-off function at the same time
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[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "another end" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that ...
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The invention discloses a logic cartridge valve for buffering and stopping hydraulic fluid flow. The logic cartridge valve comprises a main valve element, a main valve sleeve and a threaded connectionsleeve, wherein the main valve sleeve is fixedly connected to one side of the threaded connection sleeve in an inserted mode, oil inlets are formed in the upper end and the lower end of the main valve sleeve respectively, the main valve element is movably installed in the main valve sleeve, damping holes are formed in the upper end and the lower end of the main valve element respectively, a differential pressure spring is fixed to the end, located in the main valve sleeve, of the main valve element, a first locking nut is fixedly inserted into the other side of the threaded connection sleeve,a control oil port is formed in the top of the end, in butt joint with the first locking nut, of the main valve sleeve, a flow adjusting screw is fixed to one side of the first locking nut, a secondlocking nut is fixed to one side of the flow adjusting screw, and a buffer adjusting screw is fixed to one side of the back of the second locking nut. The logic cartridge valve has adjustable buffer control over the flow of a hydraulic system and meanwhile has the pressure maintaining function; and the vibration condition when the oil cylinder stops is eliminated.
Description
technical field [0001] The invention relates to the technical field of hydraulic fluid control, in particular to a logic cartridge valve for hydraulic fluid flow buffering and cut-off. Background technique [0002] The single-acting cylinder is a supporting hydraulic device for hydraulic freight elevators, home elevators, car lifts, scissor lifts and other equipment. When the cylinder is retracted, the hydraulic oil in the hydraulic cylinder is pressed back to the oil tank by the weight of the equipment itself. [0003] The problem existing in the existing hydraulic valve: the buffering and pressure maintaining functions of the hydraulic fluid cannot be realized at the same time. The existing hydraulic valve can only realize the complete cut-off of the flow, and the oil cylinder directly stops running completely, which produces particularly large vibration, and cannot realize the flow buffer and cut-off function at the same time. Contents of the invention [0004] The pur...
Claims
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IPC IPC(8): F15B13/02F15B21/041
CPCF15B13/02F15B21/041
Inventor 王颖涛
Owner 济南济力机械设备有限公司