Throttling stop wear-resistant gate valve

Abstract

The invention discloses a throttling stop wear-resistant gate valve. A valve body is provided with an inflow short pipe (1) and an outflow short pipe (2), and is provided with a gate plate (3) and a gate plate lifting opening and closing mechanism, the throttling stop wear-resistant gate plate valve is characterized in that the contact surface between the gate plate (3) and the inner end surface of the outflow short pipe (2) is a wedge-shaped gate plate surface (4); the gate plate (3) is a wear-resistant gate plate; the inner wall of the inflow short pipe (1) and the outflow short pipe (2) isa wear-resistant layer; the inner end of the inflow short pipe is provided with a sealing element (5). According to the throttling stop wear-resistant gate valve, the wedge-shaped gate plate surface (4) can enable the gate plate to be closed tightly and do not leak, and the problem of untight leakage of a valve due to abrasion is overcome. The overall wear resistance of the valve can be improved,so that the valve can have a throttling and stopping function. The defect that two valves of a traditional throttling valve and a stop valve are matched and used can be overcome, and the throttling stop wear-resistant gate valve has the advantages of being easy to manufacture, install and low in operation cost.

Description

[0001] 1. Technical field: [0002] The invention relates to a valve for a pipeline for transporting slurry medium, in particular to a throttling cut-off wear-resistant gate valve. [0003] 2. Background technology: [0004] The valve used to transport the slurry medium pipeline needs a throttle valve to control the flow of the pipeline and a stop valve to control the opening and closing of the pipeline to work together. In the known technology, the two valves are independent of each other, and there are also two The valve is a one-piece valve. The reason is that the throttle valve has no cut-off function. If the cut-off valve is used as a throttling function, the slurry medium between the sealing port of the valve and the gate plate will wash and wear the sealing port severely, so that the shut-off valve is not closed tightly and the valve leaks. The inventor designed a throttling cut-off wear-resistant gate valve on the basis of the known cut-off valve through research exper...

AI Technical Summary

Problems solved by technology

The reason is that the throttle valve has no cut-off function. If the cut-off valve is used as a throttling function, the slurry medium between the sealing port of the valve and the gate plate will scour and wear the sealing port seriously, so that the shut-off valve is not closed tightly and the valve leaks.

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