The invention provides an oil returning valve set with multi-stage throttling control which comprises an oil returning channel (13) implemented in oil in an oil hydraulic equipment. The two ends of the oil returning channel (13) are connected to a pressurized oil collecting cavity (11) and a pressurized oil discharging cavity (12) respectively. A plurality of throttling valve plugs and oil returning valve plug (30) are arranged in the oil returning channel (13), and a normally-open draining gap (25) is also formed among the plurality of throttling valve plugs. When the oil returning valve plug (30) is opened, a plurality of the throttling valve plugs are arranged in series to generate multi-stage throttling oil hydraulic draining control, which improves the problem that the valve opening allowance of the throttling valve for oil returning and pressure relief of traditional oil hydraulic equipment is not sufficient.
OIL RETURNING VALVE SET WITH MULTI-STAGE THROTTLING CONTROL
ÖLRÜCKFÜHRUNGSVENTILSATZ MIT MEHRSTUFIGER DROSSELSTEUERUNG
ENSEMBLE DE SOUPAPE DE RETOUR D'HUILE AVEC COMMANDE D'ÉTRANGLEMENT À PLUSIEURS ÉTAGES
2023-04-19
Patent
Electronic Resource
English
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / F16K VALVES , Ventile |
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