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Double seal valve

A double seal and valve technology, applied in the direction of valve lift, valve details, valve device, etc., can solve the problems of small opening power, huge opening power, etc., to reduce the volume and the requirements for the power source, reduce the manufacturing cost, design and Create easy-to-achieve effects

Inactive Publication Date: 2007-08-15
SICHUAN SANTAI JIANMEN PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the shortage of the existing double-sealed valves that require huge opening power when opening, the technical problem to be solved by the present invention is to provide a double-sealed valve that can realize the opening function with a small opening power

Method used

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  • Double seal valve

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Embodiment

[0031] As shown in Figure 1 and Figure 2, the double-sealed valve includes a valve body 1 with an inlet and outlet, and two seals 3 and 4 that are arranged in the valve cavity 2 of the valve body 1 and match the inlet and outlet respectively. 3 and 4 are valve plates. Pressure relief holes 5 , 6 are respectively opened on the sealing members 3 , 4 , and matching one-way valves 7 , 8 and pressure relief hole sealing bodies 9 , 10 are arranged on the pressure relief holes 5 , 6 . Check valve 7,8 is arranged on pressure relief hole 5,6 channel and its direction is to prevent fluid from entering valve chamber 2. In the middle of the valve cavity 2, there is a rotary valve stem 11 and a drive plate 12 that is connected to the rotary valve stem 11. The drive plate 12 is provided with two slide grooves 13, 14, and the balls of the two pressure relief hole sealing bodies 9, 10. The head-shaped ends are respectively arranged in the slots 13 , 14 and fitted thereto. In this way, while...

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Abstract

This invention provides a dual-sealing valve, which is used under the condition that the controlled liquid is flowed in double-way, and can realize opening function under less opening power. The dual-sealing valve includes valve body with in-outlet, and two sealing elements disposed in a valve cavity which is in the valve body and matched with the inlet and the outlet. A linkage synchronization unit is disposed between the two sealing elements, and a pressure relieving device is connected between the valve cavity and the in-outlet. The valve reduces not only the opening-closing moment greatly, but also the volume of the outside operation device and the requirement of the power source, thus the operation speed of the valve and the service life of the valve are improved. Moreover, the valve has realized self-dual-sealing in double-way, and achieved no damage rapid switch by the linkage synchronization unit. Thus the reliability of the inside operation of the valve is improved, and the cost of the valve is reduced. This invention applies especially in the environment of large flux and high pressure, which requires good sealing performance, intrinsically safe, and frequently rapid switch.

Description

technical field [0001] The invention relates to a valve, especially a double-seal valve used in the environment where the controlled fluid flows in two directions. Background technique [0002] The common valves in the existing industry have three basic structural types: gate valve, flat valve and butterfly valve. For large-scale program-controlled valves, the pressure on the valve plate is very huge, for example: pipe diameter = 400mm, pressure = 25kg / cm 2 , the valve plate pressure is about 30000KG. Therefore, there are four main indicators to measure its performance: action and regulation, sealing, reliability and valve resistance. [0003] 1. For action and adjustment: the structure type and working principle of the valve determine the limit that the above indicators can achieve. The main resistance of the gate valve during the valve switching process comes from the frictional resistance between the valve plate and the sealing surface; the main resistance of the flat v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/00F16K39/02F16K31/44
Inventor 潘世永
Owner SICHUAN SANTAI JIANMEN PUMP
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