Gate for reducing difficulty of processing and gate valve thereof

Abstract

The invention relates to a gate for reducing the difficulty of processing and a gate valve thereof. The gate comprises a valve rod. The outer surface of the valve rod is provided with a trapezoidal thread. The gate further comprises gate bodies, a first positioning shaft, a second positioning shaft, and a connecting rod. The gate bodies are each an oval plate body. The outer edge of each gate bodyis annularly provided with a wear-resistant layer. A seal ring is fixedly installed on the edge of the outer side face of each gate body. The bottoms of the two gate bodies are hinged on the first positioning shaft, and the upper portions of the two gate bodies are hinged to the lower end of the connecting rod. The connecting rod is a rectangular plate body. The upper end of the connecting rod and the valve rod are hinged to the second positioning shaft. The first positioning shaft and the second positioning shaft are each a cylinder. The two ends of the first positioning shaft and the two ends of the second positioning shaft are each provided with a bearing. The gate is matched with a corresponding valve body to form a mechanism for stopping fluid movement. The gate eliminates the sliding between the gate body and the sealing surface, reduces the erosion of water flow and the friction on the sealing surface, lowers the processing accuracy requirements of the gate, and is suitable forbeing used in large-caliber pipelines.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering equipment, in particular to a gate plate with reduced processing difficulty and a gate valve thereof. Background technique [0002] Water conservancy projects are projects built to control and allocate natural surface water and groundwater to achieve the purpose of eliminating harm and rejuvenating profits. Also known as water engineering. Water is an indispensable precious resource for human production and life, but its natural state does not fully meet human needs. Only by building water conservancy projects can we control water flow, prevent floods, and regulate and distribute water to meet the needs of people's life and production for water resources. [0003] In water conservancy projects, various valves are indispensable, among which the more common applications include gate valves, butterfly valves, check valves, etc. Gate valves are a kind of lifting valves. The mov...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the sealing surface of the gate valve is easy to be eroded and scratched, the present invention provides a gate plate and its gate valve that reduce production difficu

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