Double soft sealing emergency cut-off valve
A soft-sealing, quick-closing valve technology, used in lift valves, valve devices, engine components, etc., can solve problems such as easy damage to the sealing surface, and achieve the effects of not easy damage, reliable operation, and easy leakage of media.
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[0021] Such as figure 1 The double soft-seal quick-closing valve shown includes a valve body (1), a valve cover (2), a valve disc (3), a valve stem, and a hand and pneumatic operating mechanism (5) arranged on the valve cover bracket. A special-shaped groove (4) is provided at the contact surface between the bottom end surface of the valve disc (3) and the valve body. The elastic anti-corrosion material layer is filled in the groove. The elastic anti-corrosion material layer is slightly deeper than the special-shaped groove and protrudes slightly from the disc (3) The bottom end surface makes the valve disc and the valve body form a soft seal, the bottom angle of the outer circle of the special-shaped groove (4) is a right angle, and the through hole of the valve cover (2) and the valve stem (4) is provided with two different sizes The O-shaped fluorine rubber elastic sealing ring (1), the valve disc (3) is equipped with a cylindrical compression spring (8). On this basis, two ...
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