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Fully-lined ceramic three-way ball valve and valve ball structure thereof

A technology of three-way ball valves and ceramic valves, which is applied in the direction of valve housing structure, multi-way valves, valve details, etc., can solve problems such as easy fracture, and achieve the effects of reducing stress concentration, high wear resistance, and high hardness

Inactive Publication Date: 2020-07-03
ZHENGZHOU XINYUYUAN MASCH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fully lined ceramic three-way ball valve and its ball structure to solve the problem that the upper and lower parts of the ceramic valve ball in the prior art are prone to breakage

Method used

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  • Fully-lined ceramic three-way ball valve and valve ball structure thereof
  • Fully-lined ceramic three-way ball valve and valve ball structure thereof
  • Fully-lined ceramic three-way ball valve and valve ball structure thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A fully lined ceramic three-way ball valve, such as Figure 1-3 As shown, it includes a valve body 1, a valve seat 2 and a valve ball 3. The valve body is provided with a valve cavity 11 and a flow channel 12. The inner wall of the valve cavity is provided with a valve cavity liner 13 through precision machining. The precision machining sleeve is provided with a flow channel lining 14, the valve cavity lining and the flow channel lining are all ceramic linings, the valve seat 2 is a ceramic valve seat, the valve cavity lining 13, the flow channel lining 14 and the valve seat form a When high temperature or highly corrosive fluid flows through the ball valve, the fluid contacts the ceramic lining and ceramic valve seat, thereby protecting the valve body 1 from contact with the fluid.

[0029] The valve ball 3 is a ceramic valve ball. Because the interior of the ceramic is bonded by covalent bonds, its bonding force is very strong, so the ceramic has a high hardness and h...

Embodiment 2

[0033] Embodiment 2: A full-lined ceramic three-way ball valve of this embodiment will be described centering on the differences from Embodiment 1.

[0034] like Figure 5 As shown, in this embodiment, the valve ball 3 is a metal valve ball whose outer surface is sprayed with a ceramic coating, that is, the valve ball includes a metal valve core 31 and a ceramic coating 32 coated on the outer surface of the metal valve core. The valve ball inner liner 8 is also sleeved in the center flow channel of the valve ball, and the ceramic coating 32 and the valve ball inner liner 8 are in direct contact with the fluid, thereby protecting the metal valve core 31 from contacting the fluid. At this time, since the inside of the metal valve core 31 is bonded with metal bonds, elastic deformation and plastic deformation will occur inside the metal valve core 31 when subjected to a large torsion force, so the fracture critical torque value of the metal valve core 31 is relatively large. The...

Embodiment 3

[0035] Embodiment 3: A full-lined ceramic three-way ball valve of this embodiment will be described centering on the differences from Embodiment 1.

[0036] like Image 6 As shown, a full-lined ceramic three-way ball valve of this embodiment, the lower valve stem 15 is installed at the lower end of the valve ball 3 in the valve body 1, and a limiting groove 16 is opened on the lower spherical surface of the valve ball 3, and the lower valve stem The upper end of 15 stretches in the limit groove 16, and the bottom of the limit groove 16 is pressed against the end of the lower valve stem 15, the valve ball 3 can be supported on the lower valve stem, and the lower valve stem 15 is limited to the limit. bit slot 16. The lower valve stem provides upward support for the valve ball 3, making the floating valve ball support more stable, preventing non-standard displacement of the valve ball, and ensuring better sealing performance between the valve ball 3 and the valve seat 2. Simul...

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Abstract

The invention discloses a fully-lined ceramic three-way ball valve which comprises a valve body, a valve seat and a valve ball. A valve cavity and a flow channel are formed in the valve body. A valvecavity lining is arranged on the inner wall of the valve cavity in a sleeved mode. A flow channel lining is arranged on the inner wall of the flow channel in a sleeved mode. The valve cavity lining and the flow channel lining are ceramic linings. The valve seat is a ceramic valve seat. The valve ball is a ceramic valve ball. A valve rod connecting hole communicating vertically with a valve ball center flow channel is formed in the upper portion of the valve ball. The valve rod connecting hole and an upper valve rod are mutually matched in a sleeving mode. A valve ball lining is arranged in thevalve ball center flow channel in a sleeved mode. The lower end of the upper valve rod is attached to the valve ball lining. The ball valve is high in hardness and resistant to abrasion, and meanwhile, the situation that an upper ball portion of the ceramic valve ball is suddenly subjected to torsion from the valve rod and fractured instantaneously can be prevented.

Description

technical field [0001] The invention relates to the technical field of ball valves, in particular to a full-lined ceramic three-way ball valve and its ball structure. Background technique [0002] A ball valve is a plumbing component that controls fluid movement. At present, most of the valve body, valve seat and valve ball are made of metal. When the fluid is high-temperature fluid or highly corrosive acid-base fluid, the metal valve ball and the inner wall of the valve are easily corroded by the fluid, resulting in the The sealing performance between the balls is reduced, and the flow blocking effect cannot be achieved. [0003] At present, there are ceramic ball valves, which are more resistant to corrosion and high temperature than metal ball valves, but the connection structure between the valve stem and the valve ball still uses the metal valve ball and the valve stem, that is, the tight fit between the valve stem and the ball groove. , so that the valve stem drives ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/087F16K5/06F16K5/20F16K27/06
CPCF16K5/0605F16K5/0647F16K5/0657F16K5/205F16K11/0873F16K27/067
Inventor 李中庆王海龙乔桂荣李振福肖佐华宋建生赵玲赵艳艳李泽锦李泽昊
Owner ZHENGZHOU XINYUYUAN MASCH IND CO LTD
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