Elastic sluice valve with wedge-shaped sealing face
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A gate valve and elastic technology, applied in the field of elastic seat sealing gate valve, can solve the problems of rubber aging, poor sealing of gate valve, elastic fatigue, etc., and achieve the effect of facilitating replacement, reducing and reducing operating torque, and reducing water leakage.
Inactive Publication Date: 2007-03-14
SHANGHAI FENGTONG VALVE MFG
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[0004] The purpose of the present invention is to overcome the deficiencies of the gate valve in the prior art, such as poor sealing, elastic fatigue, rubber aging, etc., and to invent an elastic seated gate valve.
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[0012] Resilient seated gate valves are installed on fluid lines. When the gate valve needs to be opened, the operator rotates the handle (1) counterclockwise. When the handle rotates, the valve stem (2) also rotates. The lower part of the valve stem (2) is threaded, and the thread is connected with the square copper nut (9). Copper nut (9) is embedded in the square hole of valve plate (10) spool. When the valve stem (2) rotates, the valve plate (10) is slowly lifted up. When the valve plate (10) is lifted upward, the fluid in the pipeline will flow from the high pressure to the low pressure. When the valve plate (10) is lifted When it is lifted to the highest point, the valve is fully opened, and the fluid in the pipeline can flow through the gate valve unimpeded to achieve the purpose of conveying fluid.
[0013] When the valve is opened, or when the fluid in the low-pressure area is about to reach the predetermined target, the handle (1) can be operated to adjust the heigh...
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Abstract
The invention belongs to the valve technological area. In detail it is an elastic-seated sealing gate valve, comprising valve body, valve board, valve bar, valve cover, handle and fastener. O-shaped sealing ring, O-shaped sealing ring, thrust bearing, nylon ring and O-shaped sealing ring. On the valve core of valve board a rectangle hole is set, embedded by rectangle copper nut for connecting valve bar and valve board. Inner and outer of valve core of valve board are coated with rubber and the bottom of valve body is flat. The leakage phenomena is decreased widely in the invention meanwhile operation torque is decreased and reduced by adding thrust bearing and nylon ring. There is no groove at the bottom of the valve body so that the sundries are not filled up to hinder the valve door close. The connector between nut and valve board is designed in embedded style so that damaged parts is replaced expediently in repairing.
Description
[technical field] [0001] The invention relates to the technical field of valves, in particular to an elastic seat-sealed gate valve. [technical background] [0002] Ordinary gate valves are widely used in tap water, sewage, construction, petroleum, chemical, food, medicine, electric power, shipbuilding, metallurgy and energy system fluid pipelines as regulating and shutting devices. [0003] Generally, ordinary gate valves are composed of valve body, valve plate, valve stem, valve cover, handle, seals and other parts. For a long time, the general gate valves used in the market have generally suffered from water leakage or rust, causing dirty, messy and poor working environment, which is far from the current environmental protection requirements. Moreover, the traditional gate valves are usually deposited in the bottom groove of the valve due to foreign objects, such as stones, cement blocks, wood blocks, etc., after the pipe is rinsed with water, which is easy to cause wate...
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