Proportional one-way flow valve under bilateral control
A two-way control, flow valve technology, applied in the direction of control valve, valve details, valve device, etc., can solve the problems of high price and rising cost of proportional valve, and achieve the effect of simple structure, few parts and reliable use
Active Publication Date: 2018-02-23
扬州市苏高阀门控制有限公司
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Problems solved by technology
Due to the high price of proportional valves, the use of two bidirectional control proportional one-way flow valves will inevitably lead to an increase in cost, which limits the wide application of bidirectional control proportional one-way flow valves on some lower-priced hosts
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[0035] In order to make the technical solutions and advantages of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, and are not exhaustive of all the embodiments. And in the case of no conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other.
[0036] The inventor noticed during the invention process that the existing proportional one-way flow valve with bidirectional control can only realize proportional flow control in one direction, which limits the application range of the proportional one-way flow valve with bidirectional control.
[0037] In view of the above shortcomings, the embodiment of the present invention proposes a bidirectional control proportional one-way flow valve, which will be des...
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The invention provides a proportional one-way flow valve under bilateral control. The proportional one-way flow valve is characterized by comprising a proportional electromagnet, a threaded sleeve, anarmature, a valve sleeve, a main valve core and a pilot valve core, wherein one end of the threaded sleeve is connected to the proportional electromagnet; the armature is movably arranged in the threaded sleeve; one end of the valve sleeve is fixedly connected with the other end of the threaded sleeve; an oil port A and an oil port B are arranged at the other end of the valve sleeve; the main valve core is connected into the valve sleeve; a first damping hole which communicates with the oil port B and a second damping hole which communicates with the oil port A are formed in the main valve core; the diameter of the first damping hole is less than that of the second damping hole; one end of the pilot valve core is fixedly connected to the other end of the armature; the other end of the pilot valve core is slidably arranged in the main valve core; an inner hole in the main valve core is divided into a control cavity and a pilot cavity; and a throttling groove which communicates with thecontrol cavity and the pilot cavity is formed in the pilot valve core. The proportional one-way flow valve has the advantages that the structure is simple, the cost is low, and the bilateral controlcan be achieved.
Description
technical field [0001] The invention relates to the technical field of valves, in particular to a bidirectional control proportional one-way flow valve. Background technique [0002] In recent years, proportional one-way flow valves with two-way control have been used more and more in lifting equipment such as truck-mounted cranes, aerial work vehicles, tractor rotary plows, and electric forklifts. When the equipment stops, the two-way control proportional one-way flow valve plays the role of maintaining pressure to prevent the hydraulic cylinder from sliding down; when the equipment needs to descend, the two-way control proportional one-way flow valve controls the opening size according to the input voltage signal. Adjust the output flow of the hydraulic cylinder, and then control the descending speed of the lifting equipment. The proportional one-way flow valve with two-way control currently on the market can only realize proportional flow control in one direction, that i...
Claims
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IPC IPC(8): F16K15/06F16K15/18F16K31/06F16K31/40F15B13/02
CPCF15B13/027F16K15/063F16K31/0655F16K31/406F16K15/1826
Inventor 陈艳艳
Owner 扬州市苏高阀门控制有限公司