Novel pressure reducing overflow valve
A pressure relief valve, a new type of technology, applied in the field of mechanical components, can solve problems such as large errors and large pressure fluctuations, and achieve the effects of high cost, small pressure fluctuations and stable pressure
Pending Publication Date: 2020-01-07
中重科技(天津)股份有限公司
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Problems solved by technology
Many hydraulic systems that require decompression and overflow protection often use a combination of a decompression valve and a relief valve to meet this working condition, but because these two valves need to be adjusted separately, there are often large errors, For example, the pressure reducing valve reduces the pressure to 5 MPa. At this time, when the overflow valve is adjusted, the protection pressure is often above 5.5 MPa. Therefore, the result is that the pressure will not start to overflow until the pressure exceeds the 5.5 MPa set by the overflow valve. flow protection, so the pressure tends to fluctuate widely
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[0025] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0026] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention Creation and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should no...
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The invention provides a novel pressure reducing overflow valve. The novel pressure reducing overflow valve comprises a pilot valve body, a main valve body and a valve seat; wherein the pilot valve body is arranged on the upper surface of the main valve body, and the valve seat is arranged on the lower surface of the main valve body; and the main valve body comprises a pilot oil channel, oil ports, a main valve body core part and an oil discharge channel, the oil ports are divided into an oil port 1 and an oil port 2, and the main valve body core part comprises an outer wall, a main valve coreand a spring. The created novel pressure reducing overflow valve has the overflow protection function, in the hydraulic circuit controlled by the relief valve, when the pressure exceeds the set pressure of the pressure reducing overflow valve due to the external force, the pressure reducing overflow valve responds quickly, the pressure exceeding the set value can be released and the pressure canbe kept stable.
Description
technical field [0001] The invention belongs to the field of mechanical components, and in particular relates to a novel decompression and overflow valve. Background technique [0002] In modern industrial production, there are more and more hydraulic equipment, and the control of many mechanical equipment is inseparable from the hydraulic control system. Therefore, a stable and reliable hydraulic system is a necessary condition for the normal operation and control of equipment. [0003] In many large hydraulic systems, the hydraulic station often only provides a fixed system pressure, but because there are many devices controlled by the hydraulic system, the pressure required by many actuators will be lower than the fixed system pressure provided by the hydraulic station. Reduce the pressure of the system to the appropriate pressure required by the actuator. In the actual working process of many hydraulic equipment, due to special working conditions, it is often necessary ...
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IPC IPC(8): F16K17/30F16K17/10
CPCF16K17/048F16K17/30F16K17/10
Inventor 李志周
Owner 中重科技(天津)股份有限公司