Integral prefabricated ignition furnace lifting structure and mounting method thereof

Abstract

The invention relates to an integral prefabricated ignition furnace lifting structure comprising a furnace top frame and a plurality of prefabricated blocks. Lifting screws are connected to the prefabricated blocks. A plurality of suspending slide ways are provided on the furnace top frame. Suspending plates are provided on upper ends of the lifting screws of the prefabricated blocks. The prefabricated blocks are suspended on the suspending slide ways through the lifting screws and the suspending plates. The suspending plates can slide along the suspending slide ways. With the integral prefabricated ignition furnace lifting structure, prefabricated block mounting labor intensity can be reduced, construction period can be shortened, construction safety factor can be improved, and ignition furnace lining quality can be improved. The mounting method of the lifting structure comprises the steps that: (1) the furnace top frame is mounted; (2) the prefabricated blocks are mounted one by one. When the step (1) is carried out, the plurality of suspending slide ways are arranged on the furnace top frame. When the step (2) is carried out, the prefabricated blocks are suspended and the lifting screws penetrate the suspending slide ways; the suspending plates are mounted on lifting screws of the prefabricated blocks; the prefabricated blocks are suspended on the suspending slide ways through the lifting screws and the suspending plates; and the prefabricated blocks are slid to mounting positions along the suspending slide ways.

Description

technical field [0001] The invention relates to an ignition furnace for a sintering machine, in particular to an integral prefabricated ignition furnace hoisting structure and an installation method thereof. Background technique [0002] In the modern sintering process, the ignition furnace is used to provide a high-temperature ribbon flame to the surface of the mixture, so that the solid fuel in it is ignited and burned, and the surface mixture is sintered under the heat release of the high-temperature flue gas of the ignition furnace and the solid fuel combustion. At the same time, sufficient oxygen is provided by the exhaust fan to transfer the heat accumulated in the surface layer to the next layer of mixture, so that the solid fuel in the next layer continues to burn, so that the sintering process proceeds rapidly downwards and completes the sintering process. [0003] According to the different lining structure, the ignition furnace can be divided into two types: integ...

AI Technical Summary

Problems solved by technology

Obviously, it is pulled into the hearth of the ignition furnace by manpower, and hoisted on the corresponding position of the roof frame of the ignition furnace, the work intensity is very high

Moreover, the installation of prefabricated blocks will also make the construction difficult due to the small space

It can be seen that the hoisting structure and installation method of the existing overall prefabricated screw positioning hoisting method of the ignition furnace have led to defects such as high construction and installation work intensity, long hoisting period, low installation accuracy and high risk factor.

[0010] 2. Fragile prefabricated block: Since the crane cannot be used to lift the prefabricated block at the head and middle position, it can only be transported by manpower to the directly below the installation position of the ignition furnace, and then hoisted and positioned by a manual pulley device

In the process of transportation and hoisting, friction and collision between the prefabricated block and the sintering machine trolley grate bar and fence will easily damage the original structure of the prefabricated block, affect the heat insulation effect of the ignition furnace, and even cause the prefabricated block to be scrapped. Increase the manufacturing cost of the ignition furnace

[0011] 3. It is difficult to fully absorb the expansion of the prefabricated block: the prefabricated block will expand at high temperature

And using the above-mentioned screw positioning hoisting method to install the prefabricated block of the ignition furnace, because the installation position of the prefabricated block on the furnace roof frame is connected with the furnace roof frame through the lifting nut, the prefabricated block cannot be moved after installation, so it can only be installed by connecting the prefabricated block with the furnace roof frame. The method of leaving expansion joints between prefabricated blocks to absorb the expansion generated under the high temperature working conditions of the ignition furnace

If the expansion joint is too wide, it is easy to cause the flame and gas in the furnace to flow up to the furnace roof platform, causing a safety accident. Quality accidents such as screw breakage and furnace lining damage caused by mutual extrusion of blocks

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