Industry News

The Working Principle of Rubber Lined Flange Butterfly Valve

2021-10-07
The working principle of Rubber Lined Flange Butterfly Valve
The sealing surface of the valve plate and the valve seat of the Rubber Lined Flange Butterfly Valve are of oblique cone structure, and the oblique cone surface of the valve plate is welded with heat-resistant and corrosion-resistant alloy material, and the spring is fixed between them. The pressure plate adjusting bolt is integrated. This structure effectively compensates for the allowable area between the shaft sleeve and the valve body and the elastic deformation of the valve stem under the medium pressure, and solves the valve sealing problem in the process of bidirectional interchangeable medium transmission.
The Rubber Lined Flange Butterfly Valve adopts soft T-shaped multi-layer stainless steel plates on both sides, which has the two major advantages of metal hard seal and soft seal, forming a sealing ring, no matter in low temperature, it has zero leakage sealing performance. high temperature. In this test, when the pool is in a positive flow state (the flow direction of the medium is the same as the rotation direction of the butterfly plate), the pressure on the sealing surface is generated by the torque of the transmission device, and the effect of the medium pressure on the valve plate. When the positive pressure of the medium increases, the closer the tapered surface of the valve plate to the sealing surface of the valve seat, the better the sealing effect.
Introduction to the working principle of Rubber Lined Flange Butterfly Valve:
Under reflux conditions, the seal between the valve plate and the valve seat relies on the torque of the driver to press the valve plate on the valve seat. When the unit positive pressure between the valve plate and the valve seat is lower than the medium pressure due to the increase of the reverse medium pressure, the stored deformation of the adjusting ring spring after loading can automatically correct the sealing surface between the valve plate and the valve seat and Play a role.
Rubber Lined Flange Butterfly Valve
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