Proportional pressure reducing valve integrated with pressure stabilizing function

Abstract

The invention provides a proportional pressure reducing valve integrated with a pressure stabilizing function, and belongs to the field of pressure reducing valve manufacturing. The pressure reducingvalve comprises a valve body and a pressure reducing valve element; an oil inlet pipe communicated with the pressure reducing valve element is arranged on the valve body, and a pressure stabilizing device is arranged on the oil inlet pipe; the pressure stabilizing device comprises a spring, a pressure adjusting cavity and a valve element used for opening or closing a pressure stabilizing channel;the valve element is installed in the pressure stabilizing channel in a left-right sliding mode, and the spring tightly presses the valve element so that the right end of the valve element can be located in the closed pressure adjusting cavity; the valve element is of a cylindrical structure, and a pressure adjusting channel used for communicating the pressure adjusting cavity with a liquid inletis formed in the valve element; and the valve element overcomes the restoring force of the spring to move towards the left side so as to close or partially close the pressure stabilizing channel. According to the proportional pressure reducing valve integrating the pressure stabilizing function, an oil inlet of the proportional pressure reducing valve integrates a structure with the pressure stabilizing function; and when external fluctuating pressure oil flows into the oil inlet pipe of the proportional pressure reducing valve, the pressure stabilizing function structure needs to be used forstabilizing the pressure, so that the pressure in front of the pressure reducing valve element of the proportional pressure reducing valve is limited within a certain pressure range, the external fluctuating pressure oil cannot influence the pressure reducing valve element of the proportional pressure reducing valve, and therefore, the output pressure of the proportional pressure reducing valve can be effectively ensured to be stable and reliable.

Description

technical field [0001] The invention relates to valve manufacturing technology, in particular to a proportional pressure reducing valve with integrated pressure stabilizing function, which belongs to the technical field of hydraulic equipment manufacturing. Background technique [0002] Proportional pressure reducing valve is a series of hydraulic control valves, suitable for machine tools, plastic machines, hydraulic test units and other equipment. Main purpose: It adopts the function of throttling and energy consumption to achieve pressure reduction, so that the high-pressure liquid in high-pressure, ultra-high-pressure equipment and high-pressure pipelines can be discharged through the valve to reduce the high-pressure liquid to the low pressure required by the load, so that the pressure of the high-pressure system is uniform reduce. [0003] In the prior art, the pilot proportional reversing valve without main spool displacement feedback has a proportional pressure redu...

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Problems solved by technology

[0006] The present invention provides a new proportional pressure reducing valve with integrated pressure stabilizing function. By integrating the pressure stabilizing mechanism at the oil inlet, the vibration and easy damage of the proportional pressure reducing valve in the prior art due to frequent fluctuations in external pressure are solved. question

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