Annular kiln with movable flat top

Abstract

The invention discloses an annular kiln with a movable flat top. The annular kiln with the movable flat top comprises a kiln body, a kiln crown and kiln walls arranged on the two sides. Compared with the prior art, the annular kiln with the movable flat top is characterized in that the kiln crown is the movable flat top, wherein the movable flat top is formed by detachably connecting a plurality of steel structural frames which are in lap joint with one another; each steel structural frame is provided with idler wheels, wherein the idler wheels are matched with tracks arranged at the upper ends of the kiln walls; the lower end face of the movable kiln crown is provided with an insulating layer; a hot gas recycling pipeline is arranged on the kiln crown. The annular kiln with the movable flat top has the advantages of saving money, and being convenient to place, high in degree of mechanization, capable of lowering labor intensity for workers and improving work efficiency, good in heat preservation effect when green bricks are fired, high in rate of finished products, rapid in cooling speed, easy to cool for brick taking, convenient to maintain, and particularly suitable for overall transformation of an existing old kiln.

Description

technical field [0001] The invention relates to a kiln for firing bricks and tiles, in particular to a mobile flat-top wheel kiln. Background technique [0002] The wheel kiln is the most commonly used roasting kiln in the production of fired bricks and tiles. The kiln body of the wheel kiln is two parallel vaulted tunnels, and the two ends of the parallel tunnels are connected to form an oval cave dwelling. [0003] Wheel kilns are widely used, but they also have the following defects: [0004] 1. The kiln roof of the wheel kiln is fixed and cannot be moved. It is inconvenient for workers to operate when installing the kiln. When leaving the kiln, the waste heat in the kiln is not easy to dissipate. It takes a long time to cool the bricks, and the labor intensity of the workers is high. [0005] 2. The kiln tunnel of the wheel kiln is a relatively closed space. When cooling out of the kiln, even if a blower is used to blow air into the kiln tunnel through the kiln door fo...

AI Technical Summary

Problems solved by technology

[0004] 1. The kiln roof of the wheel kiln is fixed and cannot be moved. It is inconvenient for workers to operate when installing the kiln. When leaving the kiln, the residual heat in the kiln is not easy to dissipate. It takes a long time to cool the bricks, and the labor intensity of the workers is high.

[0005] 2. The kiln tunnel of the wheel kiln is a relatively closed space. When cooling out of the kiln, even if a blower is used to blow air into the kiln tunnel through the kiln door for cooling, it takes a long time and consumes a lot of power, which not only increases the production cost, Cooling is inefficient and waste heat cannot be recycled

[0006] 3. The yield rate is low; due to the airtight kiln, once the roasting area is overfired, the fire control operation cannot be carried out, resulting in an increase in waste products

[0007] 4. The safety of the working environment is poor; during the kiln loading of the billet and the exit of the finished product in the arched kiln, the kiln collapse will occur, resulting in personal accidents

[0010] The biggest disadvantage of the orbital kiln is: the huge ring rail greatly increases the floor area of ​​the kiln.

In addition, in order to reduce the curvature radius of the ring rail, the movable kiln body can only be limited to the length required for preheating-roasting-insulation; and considering the radius difference between the outer rail and the inner rail, the movable kiln body cannot be made too large wide; this actually seriously affects the number of billets loaded in each sintering cycle, which greatly reduces production efficiency. Moreover, the cost of moving the kiln body is relatively high, and all air ducts, fire ducts, and Kazakh outlets are located underground. The difficulty is high, and the cost of the whole kiln also rises sharply

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