Metal seal wear resisting ball valve

A metal seal and wear-resistant ball technology, applied in shaft seals, valve details, valve devices, etc., can solve problems such as poor sealing of balls and valve seats, sticking of switching actions, threats to device safety, etc., and reduce operating torque , reduce erosion and wear, and ensure safety

Inactive Publication Date: 2016-03-30
CHANGZHENG ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Metal seal wear-resistant ball valves are widely used in the severe working conditions of granular media and high pressure difference. It is very easy to have a series of problems such as switching action sticking, poor sealing of the ball and valve seat, erosion of the sealing surface, and leakage of the medium from the valve stem. Serious issues that threaten the safety of the device

Method used

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Embodiment Construction

[0028] Attached below Figure 1~4 The present invention is further described in detail, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention.

[0029] Such as figure 1 As shown, the metal seal wear-resistant ball valve proposed by the present invention includes: a valve body composed of a first valve body part 1 and a second valve body part 2, a valve stem 3, a ball 4, an inlet valve seat 5, and an outlet valve seat 6. Disc spring 7, lower gasket 8, upper gasket 9, lower packing 10, stuffing box 11, upper packing 12, packing gland 13, packing pressure plate 14, wherein the ball 4 is floating, and the valve stem 3 drives the ball 4 Complete the switching action. When the valve is closed, under the pretightening force provided by the disc spring 7 and the medium pressure, the ball 4 has a certain displacement and is pressed tightly on the outlet valve seat 6 to form a spheric...

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Abstract

The invention discloses a pipe control valve, in particular a metal seal wear resisting ball valve. The metal seal wear resisting ball valve comprises a first valve body part, a second valve body part, a valve rod, a ball body, an inlet valve base, an outlet valve base, a disc spring, a lower gasket, an upper gasket, a lower filler, a filler box, an upper filler, a filler pressing sleeve and a filler pressing plate; an arc gap A and an arc gap B are formed in a runner port of a runner of the ball body, and are positioned in one side, forming a fine circulating channel with the inlet valve base and the outlet valve base, of the runner port of the runner when the ball body is slightly opened or to be closed. Through new designs of a ball body structure, an inlet valve base structure, a seal design and a ball body guide structure, a circulating form of a medium in the valve opening/closing process is improved, the erosion and the wear of the medium to the ball body and the valve bases are reduced, the sealing performance of the valve is improved, the operation torque is reduced, the valve opening/closing action is more stable, and the safety, the reliability and the service life of the valve are guaranteed.

Description

[0001] Technology area [0002] The invention provides a pipeline control valve, in particular a metal-seal wear-resistant ball valve. Background technique [0003] The ball valve has a wide range of applications due to its characteristics of small flow resistance, fast switching, good sealing performance, long service life, and convenient air control and electric control. Metal seal wear-resistant ball valve is an important class of ball valves, with the advantages of ball valves, especially suitable for various granular media, such as coal powder, coal slurry, coal slag in coal chemical plants; silicon powder and silicon dust in organic silicon and polysilicon plants , high-temperature gas; metal powder such as aluminum powder and nickel powder in the non-ferrous metal industry; it is also suitable for various harsh working conditions in the electric power and steel industries. [0004] Metal seal wear-resistant ball valves are widely used in the severe working conditions o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08F16K41/02
CPCF16K5/0605F16K5/0647F16K5/0694F16K5/08F16K41/026
Inventor 赵海燕李峰俞晓龙李伯文
Owner CHANGZHENG ENG
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