Pilot-operated type high-flow high-speed switching valve
A high-speed on-off valve and high-flow technology, applied in the field of liquid flow control valves, can solve the problems of small flow and inability to directly drive actuators, and achieve the effects of large flow, compact structure, and reduced response time
Pending Publication Date: 2017-10-24
CHANGAN UNIV
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Problems solved by technology
However, the high response and high flow rate of the high-speed on-off valve are a contradiction. At present, there is no 100L / min high-pressure, large-flow, high-speed on-off valve at home and abroad.
However, the flow rate of the current high-speed switching valve is relatively small, and it cannot directly drive the actuator to work.
Method used
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Embodiment Construction
[0021] Comply with the above technical solutions, such as figure 1 As shown, the present invention discloses a pilot-operated large-flow high-speed on-off valve, which includes a valve body 35, and a longitudinal groove 36 and a transverse groove 37 are opened on the valve body 35. The pilot valve 1 is installed in the longitudinal groove 36, and the transverse The main valve 12 is installed in the groove 37; the main valve 12 includes the left end cover 18, the oil return chamber 23, the ball valve chamber 29 and the right end cover 38 arranged coaxially in sequence, wherein: one end of the ball valve chamber 29 is provided with an oil return Valve seat 25, the other end is sealed by the right end cover 38, a support seat 28 is arranged between the oil return valve seat 25 and the right end cover 38, and a main valve separation pin 27 is movable through the support seat 28, and the main valve is separated One end of the pin 27 is provided with a main valve oil return ball val...
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The invention discloses a pilot-operated type high-flow high-speed switching valve which comprises a valve body. The valve body is provided with a longitudinal groove and a transverse groove. A pilot-operated valve is installed in the longitudinal groove. A main valve is installed in the transverse groove. The main structure in the main valve comprises a left end cover, an oil return cavity, a ball valve cavity, a right end cover and the like which are coaxially arranged in sequence. The valve has the beneficial effects that mass of a valve element is small, reversing is fast, and the overflowing amount is large. As the flow ratio of a hydraulic control valve is much larger than that of the switching valve, oil liquid of a control cavity of the hydraulic control valve is provided through a high-speed switching valve with the low flow. According to the scheme of pilot-operated control, high-frequency performance of the high-speed switching valve is effectively utilized, limitation of the small circulation ability is avoided, response time of a driver is shortened greatly, and thus high-flow high-frequency reversing of an actuator becomes possible.
Description
technical field [0001] The invention relates to a liquid flow control valve used in a hydraulic control system, in particular to a pilot-operated high-flow high-speed on-off valve. Background technique [0002] The high-speed switching valve has the characteristics of fast switching, low price, strong anti-pollution, high repeatability, etc., and can be directly controlled by pulse signals, realizing the organic combination of computer control technology and hydraulic fluid technology. [0003] The high-speed on-off valve is one of the key components of the on-off hydraulic pressure source. The output pressure of the system is determined by modulating the opening and closing time duty cycle of the on-off valve. There are two key influencing factors: oil flow capacity and frequency response. Increasing the oil flow capacity of the high-speed switching valve can reduce the throttling loss of the system, and its frequency response determines the operating frequency of the switc...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16K31/124F16K31/02F16K1/32
CPCF16K1/32F16K31/02F16K31/124
Inventor 王海飞刘贺邱涛杨士敏李平李宗
Owner CHANGAN UNIV