Device for gas displacement of working chambers of oven and sintering furnace

A technology of gas replacement and working room, which is applied in the direction of dry gas arrangement, maintenance of heating chamber, furnace, etc. It can solve the problems of increased manufacturing cost, long time required, high overall rigidity and sealing requirements, and achieve reduced manufacturing cost, Not demanding, overcome the effect of explosion

Inactive Publication Date: 2012-03-28
HEFEI HUAYU RUBBER EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has the following disadvantages: when the working chamber is in a vacuum state, a pressure difference of nearly 0.1Mpa is formed with the outside world, so the requirements for the overall rigidity and sealing of the oven and sintering furnace are relatively high, and the requirements for the ultimate vacuum degree of the vacuum pump are also relatively high. , thus greatly increasing the manufacturing cost; it takes a long time for the working chamber to reach the ultimate vacuum degree, which affects the working efficiency of the oven and sintering furnace and increases the production cost of the user

Method used

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  • Device for gas displacement of working chambers of oven and sintering furnace
  • Device for gas displacement of working chambers of oven and sintering furnace
  • Device for gas displacement of working chambers of oven and sintering furnace

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Embodiment Construction

[0016] The specific structure and working method steps of the present invention will be described in detail below in conjunction with the oven of the ventilation device of the present invention, so as to better understand the present invention.

[0017] as attached figure 1 , 2 , 3, the oven of the ventilator disclosed in the present invention comprises casing 7, working chamber 21, air bag 17, air pump 11, controller 4 and components such as heating assembly.

[0018] Described box body 7 has box door 6, and the sealing between box body 7 and box door 6 does not have strict requirement compared with vacuum oven, and box body 7 material can be stainless steel plate, galvanized steel plate or spray-painted steel plate, and box body 7 The shape and size are non-restrictive, and can be designed and adjusted according to the requirements and conditions of use.

[0019] Working room 21 is positioned at casing 7 insides, is arranged near box door 6, and working room 21 is position...

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Abstract

The invention discloses a device for gas displacement of working chambers of an oven and a sintering furnace. The device comprises a gas bag, a suction pump and the like and is characterized in that a cylindrical gas bag with an elliptic cross section is arranged in the working chamber. When inert gases such as nitrogen gas and the like are filled in the gas bag, the gas in the working chamber is extruded and discharged by the gas bag; and when the gas in the gas bag is pumped and transferred to the working chamber, the gas in the working chamber is replaced by the nitrogen gas. The invention has the beneficial effects that: the working chamber has no need of vacuum pumping, the requirements for the strength of steel products and the sealing performance of an oven door are relatively low, the manufacturing cost is lowered, and the using process is safer; when articles are baked, dried, heated and treated by other heating modes in the oven, the articles can not be oxidized; and the natural cooling mode of the oven can be changed, the baking time can be shortened, and the efficiency can be improved.

Description

technical field [0001] The invention relates to a gas replacement technology for a working chamber of an oven and a sintering furnace, in particular to a gas replacement device using an inflatable air bag to replace gas. Background technique [0002] The gas replacement in the working chambers of ovens and sintering furnaces in the prior art mostly adopts a vacuum method, that is, a vacuum pump is used to evacuate the original gas in the working chamber, and then the required gas is filled into the working chamber. This method has the following disadvantages: when the working chamber is in a vacuum state, a pressure difference of nearly 0.1Mpa is formed with the outside world, so the requirements for the overall rigidity and sealing of the oven and sintering furnace are relatively high, and the requirements for the ultimate vacuum degree of the vacuum pump are also relatively high. , thus greatly increasing the manufacturing cost; it takes a long time for the studio to reach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B21/00F27D7/02
Inventor 王健军张高峰王永志
Owner HEFEI HUAYU RUBBER EQUIP
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