Large-diameter proportional water valve for heavy equipment

• Main Authors: YAO JING, KONG XIANGDONG, CHANG LIYING, ZHAI FUGANG
• Format: Patent
• Language: Chinese; English
• Published: 13.02.2013
• 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 invention relates to a large-diameter proportional water valve for heavy equipment. The large-diameter proportional water valve comprises a step-shaped valve sleeve, a step-shaped valve core, a control cover plate, a valve cover, a bottom board, a displacement sensor and a guide proportional control valve unit. The large-diameter proportional water valve is characterized in that the lower part of the valve core is mounted inside the valve sleeve; a seal is arranged between the valve core and the valve sleeve; the lower part of the control cover plate is matched with the valve sleeve; the upper part of the valve core is matched with the control cover plate; an upper cavity and a lower cavity which are mutually separated are arranged between the valve core and the control cover plate; the bottom board is arranged at the bottom of the control cover plate; the guide proportional control valve unit is mounted on the lateral surface of the control cover plate; an oil path is arranged between the upper and lower