Opening and closing structure of heat preservation door in sintering furnace

Abstract

The invention discloses an opening and closing structure of a heat preservation door in a sintering furnace. The opening and closing structure comprises a sealing box door driving structure and a heatpreservation door follow-up structure, when a one-way action air cylinder pulls a push rod, in the first stage, a sealing box door is gradually opened, the heat preservation door keeps still, a gap between a door hanging plate support and a limiting clamping plate is gradually reduced, in the second stage, the door hanging plate support abuts against the limiting clamping plate, the one-way acting air cylinder continues pulling the push rod, the sealing box door continues being driven to be opened, and meanwhile the heat preservation door is driven to overcome pressure of a first spring structure and pressure of a second spring structure, when the one-way action air cylinder exerts thrust on the push rod under the action of built-in springs, the sealing box door is gradually closed, and the heat preservation door 8 is also gradually closed under the pressure of a first spring structure and the pressure of a second spring structure. Compared with the prior art, the opening and closingstructure of the heat preservation door in the sintering furnace can open and close the heat preservation door, independently open and close a sealing door and eliminate the influence of different thermal expansions of the heat preservation door and the sealing box door.

Description

technical field [0001] The invention relates to the technical field of sintering furnaces, in particular to an opening and closing structure of a thermal insulation door in a sintering furnace. Background technique [0002] The sintering furnace refers to the special equipment for obtaining the required physical and mechanical properties and microstructure of the powder compact through sintering, and is widely used in industrial production. With the increasing production requirements, the industry has higher and higher requirements for the opening and closing structure of the thermal insulation door in the sintering furnace. [0003] In order to quickly cool the furnace, shorten the production cycle, and improve production efficiency, the insulation door must be able to change the opening and closing state in the corresponding process section when the furnace is running and producing; because the thermal expansion coefficient of the insulation material and graphite material ...

AI Technical Summary

Problems solved by technology

For the above three requirements, most of the sintering furnaces in the industry can only meet one or two at present, and even some furnaces have closed doors and insulation doors during production and cannot be opened.

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