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Ball valve

A ball valve and external valve technology, applied in valve devices, multi-port valves, cocks including cut-off devices, etc., can solve the problems of inability to achieve synchronous operation, high production costs, and many consumables, avoiding economic losses, low cost, Small size effect

Active Publication Date: 2015-12-16
SHANGHAI HUGONG VALVE FACTORY (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: 1) large volume, many consumables, and high production cost; 2) two different operating mechanisms need to be operated separately when opening and closing the flow, and synchronous operation cannot be realized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 Shown: a composite valve ball, including an outer valve ball 8 arranged on the outer layer, an inner valve ball 7 is arranged inside the outer valve ball 8, and the inner valve ball 7 and the outer valve ball 8 are rotatably connected along the axis of the valve stem , the outer valve ball 8 is connected to the outer valve stem 3, the inner valve ball 7 is connected to the inner valve stem 4, and the valve ball is an ellipsoidal valve ball.

Embodiment 2

[0019] Such as figure 2 Shown: a composite valve ball, including an outer valve ball 8 arranged on the outer layer, an inner valve ball 7 is arranged inside the outer valve ball 8, the valve ball is a round valve ball, and the outer valve ball and the inner valve ball A rotary sealing component 6 is arranged between the balls.

Embodiment 3

[0021] Such as image 3 Shown: a ball valve using the composite valve ball, including a ball valve body 1, a composite valve ball 2 and an operating mechanism 5, the composite valve ball 2 is arranged inside the ball valve body 1, and the exterior of the composite valve ball 2 The valve ball 8 is connected to the operating mechanism 5 through an outer ball connecting piece, and the inner valve ball 7 is connected to the operating mechanism 5 through an inner ball connecting piece. The outer ball connecting piece is a hollow outer valve stem 3 , and the inner ball connecting piece is an inner valve stem 4 arranged in the outer valve stem 3 . The operating mechanism 5 includes a composite valve ball synchronous control part and an asynchronous control part.

[0022] When the composite valve ball of the present invention and the ball valve using the composite valve ball are in use, on the one hand, by controlling the asynchronous control part on the operating mechanism, the inne...

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Abstract

The invention discloses a ball valve. A combined valve ball comprises an outer valve ball arranged on the outer layer, an inner valve ball is arranged inside the outer valve ball, and the inner valve ball and the outer valve ball are connected in a rotating mode along the axis of a valve rod. The ball valve comprises a ball valve body, the combined valve ball and operating mechanisms. The combined valve ball is arranged inside the ball valve body, the outer valve ball inside the combined valve ball is connected with the operating mechanisms through an outer ball connecting part, and the inner valve ball is connected with the operating mechanisms through an inner ball connecting part. The double-valve-ball ball valve is small in size, low in cost and easy and convenient to operate synchronously and consumes a few materials. Operation and selection are diversified, the service life of the single ball valve is effectively prolonged to two or more times, and therefore the cost is greatly lowered. The ball valve is simple, convenient to use, practical, small in size, low in cost, high in safety coefficient and worthy of being applied and popularized widely.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a ball valve. Background technique [0002] As a kind of valve, ball valve is widely used in petroleum, chemical industry, power generation, paper making, atomic energy, aviation, rocket and other industrial fields and people's daily life because of its compact structure and fast and convenient operation. Ball valve generally includes valve body, The valve cover, valve seat, valve ball, valve stem and its operating mechanism, but there is only one valve ball in the valve body of the traditional valve ball. As the main part of the ball valve to control the fluid, the valve ball is most severely eroded and corroded by the fluid. Once the valve ball is eroded, the ball valve will lose the function of controlling flow, which will inevitably cause unnecessary economic and property losses, and even cause unnecessary safety accidents; The function has become an urgent problem to be solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/08F16K5/06
CPCF16K5/0605F16K5/0684F16K11/22
Inventor 马新攀
Owner SHANGHAI HUGONG VALVE FACTORY (GRP) CO LTD
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