Manual proportional valve

The utility model relates to the technical field of proportional valves, and discloses a manual proportional valve which comprises a valve body and a valve element, the valve element is assembled in an inner cavity of the valve body in a sealed mode and can slide left and right in the inner cavity o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GENG ZHONGQING, MIN YUCHUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The utility model relates to the technical field of proportional valves, and discloses a manual proportional valve which comprises a valve body and a valve element, the valve element is assembled in an inner cavity of the valve body in a sealed mode and can slide left and right in the inner cavity of the valve body, and a port P, a port T1, a port A and a port B are formed in the middle of the valve body in a communicated mode. The valve element inner cavity is communicated with the port T1 through a valve element inner hole to serve as an oil return channel, the end, away from the port P, of the valve element inner hole is plugged through a plug, a plurality of left pyramid oil channels are annularly and evenly distributed in the annular oil groove corresponding to the port B, and a plurality of right pyramid oil channels are annularly and evenly distributed in the annular oil groove corresponding to the port A. The operating handle is movably arranged in the connecting hole; and sealing the end cover. Accor