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Air brick protective valve

A protection valve and ventilation brick technology, applied in the field of metallurgy, can solve the problems of blocking ventilation bricks and unable to blow open, blocking ventilation holes of ventilation bricks, affecting the rhythm of steelmaking, etc., to extend service life and reliability, ensure ventilation, Avoid the effect of the clearing process

Inactive Publication Date: 2012-02-22
XIAN MAIXIANG ENERGY TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a protection valve for ventilating bricks to solve the problem that the venting holes on the ventilating bricks are blocked by molten steel during the smelting process described in the background technology, which may cause the ventilating bricks to be blocked and cannot be blown open to form a dead bag, which is serious Problems Affecting the Tempo of Steelmaking

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Embodiment Construction

[0023] The problem to be solved in this embodiment is that the ventilation holes on the ventilation bricks are blocked by molten steel during the current smelting process, causing the ventilation bricks to be blocked and unable to be blown open to form a dead bag, which seriously affects the rhythm of steelmaking.

[0024] To this end, this embodiment provides figure 1 The air-permeable brick protection valve shown is composed of a valve body 2 with a cavity, a guide seat 3, a guide rod 4, a steel ball 5, a sleeve 8, a valve body seat 7, an end cover 6, a left spherical straight-through joint 1, and a right spherical straight-through joint. The valve body seat 7 is composed of a valve body seat base 10, an annular wall 11 arranged on the edge of the valve body seat base 10 and extending to the left, and a hollow column 12 arranged in the center of the valve body seat base 10 , the length of the hollow column 12 in the axial direction is less than the length of the annular wall...

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Abstract

The invention belongs to the technical field of metallurgy, relates to a gas retaining device of a gas pipeline, and particularly relates to an air brick protective valve. The protective valve is mainly composed of a valve body, a guiding base, an end cover, a valve body base, a left spherical straight coupling and a right spherical straight coupling, a steel ball, a guide rod and a sleeve, wherein the left spherical straight coupling is hermetically welded on the valve body as an air inlet pipeline, and the right spherical straight coupling is hermetically welded on the end cover as an air outlet pipeline; the guiding base and the valve body base form a whole, and the sleeve is fastened through the guiding base and the valve body base; and the steel ball is placed at the air inlet of thecentre of the valve body base, and the guide rod is arranged in the guide sleeve of the cavity of the guiding seat. Because of the cooling protection of the unique two-layer flow gas of the protective valve, the temperature of the sealing spherical surface of the protective valve is far lower than the environmental temperature; meanwhile, the spherical surface hard sealing is adopted, the ageing failure of components, such as a spring, a rubber seal ring and the like, in a one-way isolating valve is reduced, thereby guaranteeing the air permeability of the air brick.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and relates to a gas intercepting device for a gas pipeline, in particular to a ventilating brick protection valve. Background technique [0002] In my country's current metallurgical industry, special steel and high-grade steel are mainly realized through the refining mode outside the furnace, including LF refining furnace, RH furnace, VD furnace, etc. All these smelting are inseparable from bottom blowing argon to improve efficiency and steel Therefore, the quality of argon blowing has a direct impact on the quality of the variety of steel. The final path for argon to enter the ladle is through the permeable brick. The gas permeability of the permeable brick directly affects the pressure and flow of argon entering the molten steel. The current method adopted by the metallurgical industry is to turn off the gas supply valve and release the residual pressure in the pipeline when the argon blowin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/04C21C7/072
Inventor 王铁川
Owner XIAN MAIXIANG ENERGY TECH
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