Special ball valve for oxygen

A technology for ball valves and oxygen, applied in valve details, valve devices, valve housing structures, etc., can solve the problems of enlarged ball activity space and skin shedding, etc., and achieve the effects of improving service life, reducing friction, and stabilizing operating torque

Inactive Publication Date: 2019-01-25
CHINA KIST VALVE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Oxygen ball valve is a kind of special valve for oxygen pipeline network. In addition to the function of ordinary ball valve, it also has the characteristics of good flame retardancy, good electrical conductivity, fast heat transfer, compact structure, oil-proof, safe and reliable, etc. With the development of metallurgical industry Development Oxygen ball valves are widely used in iron and steel, metallurgy, medicine, chemical industry and other industries together with oxygen-specific globe valves. However, during the working process of oxygen ball valves, the internal ball will inevitably rub against the valve cavity. After long-term friction, it will cause The surface of the inner wall of the valve cavity falls off, and the space for the ball to move becomes larger, resulting in very serious consequences. Therefore, it is necessary to invent a special ball valve for oxygen to solve the above problems.

Method used

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Experimental program
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Effect test

Embodiment 1

[0024] The present invention provides such Figure 1-4 A special ball valve for oxygen is shown, including a valve body 1, connecting seats 2 are provided on both sides of the valve body 1, a valve stem housing 3 is connected to the top of the valve body 1, and the top of the valve stem housing 3 The actuator 4 is connected, the valve body 1 includes a valve cavity 5 and a valve seat 6, the valve cavity 5 is surrounded by a valve seat 6, the bottom of the valve cavity 5 is provided with a support seat 7, and the support seat 7 It is arranged inside the valve seat 6 , the top of the valve chamber 5 communicates with a valve stem connecting seat 8 , and both sides of the valve stem connecting seat 8 are provided with top fixing seats 9 .

[0025] Both the valve body 1 and the connecting seat 2 are made of hard alloy material, the valve cavity 5, the valve seat 6 and the valve stem connecting seat 8 are integrated, and the surfaces of the valve cavity 5 and the valve seat 6 are a...

Embodiment 2

[0030] The valve stem housing 3 is sleeved with a valve stem 31 inside, and the outer side of the valve stem housing 3 is surrounded by an actuator connecting plate 32, and the bottom of the actuator connecting plate 32 is provided with a filler 33, and the filler 33 set for low leakage skimming combined packing.

[0031] The actuator 4 is provided with a hydraulic pump inside, and the output shaft of the hydraulic pump is connected to the valve rod 31 in a transmission manner. The executive switch 41 is arranged on the top of the actuator 4 , and the executive connection seat 42 is arranged on both sides of the actuator switch 41. , the execution connection seat 42 is made of PEI material.

[0032] Beneficial effects of this embodiment: the ball and the valve stem 31 are connected through cylindrical pins and adopt interference fit. After the connection, the ball and the valve stem are approximately integral, which completely guarantees the concentricity of the ball and the v...

Embodiment 3

[0034] A fixed seat 71 is arranged between the support seat 7 and the valve seat 6, and the fixed seat 71 is composed of springs. Both sides of the fixed seat 71 are provided with valve seat connection holes 61, and the valve seat connection holes 61 is arranged inside the valve seat 6 .

[0035] The valve stem connection seat 8 is provided with a through hole inside, and the through hole is matched with the valve stem 31 , and the valve stem connection seat 8 is provided with a valve stem connection hole 81 at the top of both sides of the inner wall.

[0036] The top fixing seat 9 is arranged on the top of the valve seat 6 and is fixedly connected with the valve stem connecting seat 8. The inside of the top fixing seat 9 is provided with a fixing seat connection hole 91, and the outside of the top fixing seat 9 is provided with an electrostatic connection export assembly. 92 , the electrostatic connection lead-out component 92 is arranged on the top of the valve seat 6 .

[...

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PUM

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Abstract

The invention discloses a special ball valve for oxygen. The special ball valve comprises a valve body. A connecting seat is arranged on both sides of the valve body respectively, a valve stem housingis connected to the top of the valve body, and an actuator is connected to the top of the valve stem housing. The valve body comprises a valve chamber and a valve seat, the valve chamber is surrounded by the valve seat, the bottom of the valve chamber is provided with a support seat disposed inside the valve seat, the top of the valve chamber is communicated with a valve stem connecting seat, andtop fixed seats are arranged on two sides of the valve stem connecting seat. The valve is provided with the connecting seats and the valve chamber, and the surfaces of the valve body and the valve seat are subjected to special hardening treatment, so that the wear resistance and the anti-high pressure oxygen purging capability can be greatly improved. The edge of a ball passage hole inside the valve body is passivated to ensure that a hardened surface layer does not fall off. A ball body is positioned by two sides, the front side and the rear side by means of a positioning ring and an insertion plate inserted into the valve chamber, the friction between the ball body and the valve chamber is reduced during the working process, and the service life of the ball valve is prolonged.

Description

technical field [0001] The invention relates to the field of valves, in particular to an oxygen special ball valve. Background technique [0002] Oxygen ball valve is a kind of special valve for oxygen pipeline network. In addition to the function of ordinary ball valve, it also has the characteristics of good flame retardancy, good electrical conductivity, fast heat transfer, compact structure, oil-proof, safe and reliable, etc. With the development of metallurgical industry Development Oxygen ball valves are widely used in iron and steel, metallurgy, medicine, chemical industry and other industries together with oxygen-specific globe valves. However, during the working process of oxygen ball valves, the internal ball will inevitably rub against the valve cavity. After long-term friction, it will cause The epidermis of the inner wall of the valve cavity is peeled off, and the space for the ball to move becomes larger, resulting in very serious consequences. Therefore, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08F16K5/20F16K27/06F16K31/12
CPCF16K5/0605F16K5/0647F16K5/0673F16K5/0689F16K5/0694F16K5/08F16K5/201F16K27/067F16K31/12
Inventor 陈建海
Owner CHINA KIST VALVE GRP
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