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Telescopic gate valve with soft seal and threaded connection

A threaded connection and soft sealing technology, applied in shaft seals, sliding valves, valve details, etc., can solve the problems that the length of the valve body cannot be adjusted, the sealing performance of the gate valve is not good, and the maintenance cost is high, and the sealing performance is enhanced. , the effect of reducing maintenance costs

Inactive Publication Date: 2011-01-19
ANHUI REDSTAR VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to solve the problems of poor sealing performance, high maintenance cost and unadjustable valve body length of existing gate valves.

Method used

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  • Telescopic gate valve with soft seal and threaded connection
  • Telescopic gate valve with soft seal and threaded connection

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Experimental program
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Effect test

Embodiment Construction

[0010] In this embodiment, the soft sealing screw is connected to the telescopic gate valve, such as figure 1 As shown, it includes a valve body 1 and a gate 8 located in the valve body 1. A valve cover 10 is arranged above the valve body 1. A valve stem 11 is arranged in the valve cover 10, and one end of the valve stem 11 is connected to the gate. The plate 8 is connected, and the other end is connected to the handwheel 14 through a nut 16. A nameplate 15 is provided below the nut 16. The gate 8 includes a skeleton and a rubber wrapped on the skeleton to form a soft-sealed gate valve. The water inlet of the valve body 1 is set. There is an internal thread, and the connection with the pipeline is a threaded connection. figure 1 As shown in the lower part, the joint 6 can move freely in the inner cavity. A rubber ring 2 and a gasket 3 are arranged between the joint 6 and the valve body 1 to enable liquid sealing. There are 7 pairs of valve body lock caps outside the joint ...

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Abstract

The invention discloses a telescopic gate valve with soft seal and threaded connection, which comprises a valve body (1) and a gate plate (8), wherein the gate plate (8) comprises a frame and a soft seal gate valve which is coated on the frame and is made of rubber; the water inlet of the valve body (1) is provided with internal threads, and the valve body (1) is in threaded connection with a pipeline; a movable joint (6) is sleeved in the internal cavity of the water outlet end of the valve body (1); the movable joint (6) can freely move in the internal cavity and can be hydraulically sealed, and a convex table (18) is matched with an annular table (19) to realize the purpose of enabling the movable joint (6) to be in extrusion connection with an external pipe; and the inner wall of an external locking cap (5) is provided with threads for connecting. The invention greatly enhances the sealing performance, greatly expands the application range and reduces the maintenance cost.

Description

Background technique [0001] The invention relates to a gate valve, in particular to a soft-seal screw-connected telescopic gate valve. Background technique [0002] Gate valves are widely used in production and life fields. The gate valve generally includes a valve body and a valve plate. The existing valve body is usually provided with flanges at both ends, and the connection with the pipeline is realized through the flange. At the same time, the existing gate valve is a hard-sealed gate valve. Since the fluid channel of the hard-sealed gate valve is provided with a groove that matches the valve plate, when there are hard substances such as sand in the fluid, it will stay in the groove and affect the impact. The closing of the gate valve. In addition, with the development of modern new materials, the application environment of gate valves has also undergone great changes. For example, in residents' lives, the pipes for water supply to residents are generally metal pipes, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/18F16K3/30F16K3/312F16K27/04F16K31/60F16K41/02F16L55/07
Inventor 许有芳赵敏李军
Owner ANHUI REDSTAR VALVE
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