Electric control valve

• Main Authors: WANG LIFENG, WANG XIUQIANG, WU BEIBEI, WANG HAOTIAN, LI WUHAI, ZHANG BANGDONG, YIN WEIKE
• Format: Patent
• Language: Chinese; English
• Published: 08.02.2022
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The utility model discloses an electric control valve which comprises a valve body, a valve rod, a valve rod driving device and an electric control unit, the valve rod driving device adopts an eccentric wheel structure driven by a rotary power device, the eccentric wheel drives the valve rod to reciprocate, and a first working oil port of the valve body connected with a rodless cavity of a lifting oil cylinder is connected with a switch valve. The switch valve is an electromagnetic switch valve or an electro-hydraulic switch valve controlled by an electric control unit; after the lifting oil cylinder reaches a set position, the switching valve is quickly closed under the action of the electric control unit, and an oil way between the first working oil port and the rodless cavity of the lifting oil cylinder is disconnected, so that the lifting oil cylinder is kept at the set position and is not influenced by the weight of a machine tool when the machine tool descends, and the control precision of the system is