High-performance cargo oil tank sluice valve

Abstract

The invention discloses a high-performance cargo oil tank sluice valve. The high-performance cargo oil tank sluice valve comprises an adjusting lead screw, a hand wheel, a supporting base, a frame, a sluice plate, lifting lugs, a sluice base and a wedge; the sluice plate is vertically arranged and installed in a vertically formed guide-track groove of the sluice base in an inserted manner from top to bottom, and the sluice plate is in clearance fit with the guide-track groove and can move up and down along the guide-track groove; the wedge is arranged in a fit clearance between the sluice plate and the guide-track groove of the sluice base in the medium flowing direction; the sluice plate and the wedge are provided with mutually wedged tapered wedge surfaces respectively, and the wedge surface of the wedge is shaped like a big-end-down wedge; as further improvements, the mutually wedged tapered wedge surfaces of the sluice plate and the wedge are each coated with a wear-resistant layer, bonding surfaces of the sluice plate and the sluice base are also coated with the wear-resistant layer, the portion, on the back face of the wedge, of the groove wall of the guide-track groove of the sluice base is provided with multiple adjusting bolts, and the groove walls on the two sides of the guide-track groove are each provided with a locking bolt. The high-performance cargo oil tank sluice valve is small in operating torque, resistant to wear and good in sealing reliability.

Description

technical field [0001] The invention relates to the field of valves, in particular to a gate valve. Background technique [0002] The gate valve cuts off the pipeline through the movement of the gate plate along the up and down direction of the guide rail groove of the gate seat. The gate valve has the advantages of small fluid resistance and unrestricted medium flow, etc., and is widely used, but the gate valve has the following defects: First, the gap between the gate plate and the guide rail groove of the gate seat in the direction of medium flow will become larger and larger as the service time prolongs. The bigger the valve is, the greater the leakage of the valve will be. Second, there is always friction between the gate plate and the guide rail groove of the gate seat during the opening and closing process, so the operating torque is large, and the joint surface of the gate plate and the guide rail groove of the gate seat It is easy to scratch and cause the valve to ...

AI Technical Summary

Problems solved by technology

The gate valve has the advantages of small fluid resistance and unrestricted medium flow, etc., and is widely used, but the gate valve has the following defects: First, the gap between the gate plate and the guide rail groove of the gate seat in the direction of medium flow will become larger and larger as the service time prolongs. The bigger the valve is, the greater the leakage of the valve will be. Second, there is always friction between the gate plate and the guide rail groove of the gate seat during the opening and closing process, so the operating torque is large, and the joint surface of the gate plate and the guide rail groove of the gate seat Easy to produce scratches, leading to valve leakage

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