Logic valve

• Main Authors: LIU ZHAOQUAN, LI XIAOKANG, KANG KAIXIANG
• Format: Patent
• Language: Chinese; English
• Published: 20.09.2019
• 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 a logic valve which comprises a cone valve and a pilot control valve, the cone valve comprises a valve body, the valve body is provided with a first oil port, a second oil port and an oil control port, the pilot control valve is installed in the oil control port, and the logic valve is characterized in that a large one-way valve element is arranged in the valve body in a matched mode and bears constant pressure of a large one-way valve reset spring; a small one-way valve core is arranged in the large one-way valve core and is subjected to constant pressure of a small one-way valve return spring; the small one-way valve core is provided with a third oil port, a fourth oil port and a fifth oil port, the third oil port can be communicated with the first oil port, the fourth oil port can be communicated with the second oil port, and the fifth oil port can be communicated with the oil control port; a first throttling hole is formed between the third oil port and the fourth oil port; the