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Ceramic ball core for ball valve

A technology of ceramic balls and ball valves, applied in valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as easy leakage, chipping of ball cores, and inability to corrosion

Inactive Publication Date: 2015-01-28
YANTAI KINGWAY SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of science and technology and the rapid development of industrial technology, traditional cemented carbide ball cores can no longer meet the needs of harsh working conditions such as higher wear and strong erosion, especially for inorganic non-metallic salts with higher hardness. Fluid medium, the wear of the ball core will be quite serious
At the same time, because the sealing pair is made of the same material, the friction coefficient is very large, so the metal ball core generally has problems such as large torque, corrosion resistance, and easy leakage.
[0003] In order to overcome the deficiencies of the above-mentioned prior art, many ceramic ball valves and ball cores have appeared on the market. There are also various types. Although it is good to use under low pressure conditions, when it is used in high pressure applications, the ball core will be broken, which seriously affects the promotion and application of ceramic ball valves.

Method used

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  • Ceramic ball core for ball valve
  • Ceramic ball core for ball valve
  • Ceramic ball core for ball valve

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Experimental program
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Embodiment Construction

[0062] Embodiment, a kind of ball valve ceramic ball core, refer to figure 1 , figure 2 , the ball core body 1 is provided with a ball core through hole 2 and a valve stem hole 3, and the ratio a of the outer diameter Q of the ball core body 1 to the diameter D of the ball core through hole 2 is greater than or equal to 1.8.

[0063]The core body 1 is made of zirconia structural ceramics. By utilizing the self-lubricating properties of zirconia, the ball valve using this core body 1 can obtain the characteristics of reliable sealing, light torque, high corrosion resistance and wear resistance, and a long service life. Long, high stability, can adapt to the needs of harsh working conditions such as higher and higher wear and strong erosion.

[0064] For the convenience of assembly, the upper and lower ends of the core body 1 are planes, and the stem hole 3 is a rectangular blind hole.

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Abstract

The invention discloses a ceramic ball core for a ball valve. The ceramic ball core comprises a ball core body, a ball core through hole and a valve stem hole, wherein the ratio a of the outer diameter of the ball core body to the diameter of the ball core through hole is more than or equal to 1.8. The ceramic ball core provided by the invention breaks through the conventional ratio concept of the outer diameter of the ball core body to the diameter of the ball core through hole, and has the characteristics of reliable sealing, light torque, high corrosion and wear resistance, long service life and high stability.

Description

technical field [0001] The invention belongs to the technical field of general mechanical valves, in particular to a ceramic ball core used for ball valves. Background technique [0002] With the rapid development of science and technology and the rapid development of industrial technology, traditional cemented carbide ball cores can no longer meet the needs of harsh working conditions such as higher wear and strong erosion, especially for inorganic non-metallic salts with higher hardness. If the fluid medium is used, the wear on the ball core will be quite serious. At the same time, since the sealing pair is made of the same material, the friction coefficient is very large, so the metal ball core generally has problems such as large torque, poor corrosion resistance, and easy leakage. [0003] In order to overcome the deficiencies of the above-mentioned prior art, many ceramic ball valves and ball cores have appeared on the market. It is also varied. Although it is good t...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/08
CPCF16K5/08
Inventor 金浩军冯一桀
Owner YANTAI KINGWAY SCI & TECH
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