Bottom open type blockless flat plate gate valve

• Main Authors: GUANGHUI CHEN, DONGQING SHI
• Format: Patent
• Language: English
• Published: 06.04.2005
• Edition: 7
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model relates to a flat plate gate valve. The utility model comprises a valve body, a valve cover, a valve rod, a gate plate, a valve base and a driving device. The utility model primarily provides a hole flow guiding on the upper part of the gate plate. The lower part of the gate plate is provided with a sealing surface matching with the sealing surface of the valve base. During the opening and the closing process of the valve, the medium can not move into the inner chamber of the lower valve body. The influence on the opening and the closing of the gate plate of the inner chamber of the lower valve body caused by the accumulation of the rubbish and the residue is eliminated. The gate plate is caused to rise and fall without blocking in the inner chamber of the lower valve body. Simultaneously, the valve rod through the screw matching of the center of the gate plate can enter into the flow guiding hole of the gate plate when the gate plate rises. During the opening and the closing process of the valve, the circumferences of the valve rod and the gate plate screw bear the uniform force. The utility model has the advantages of the flexible opening and closing, the small opening and closing force moment and the long service life. The utility model is quite suitable for the opening and closing of various medium ducts.