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2. The furnace body of the furnace is of section steel structure. The main thermal insulation material is 1050 grade aluminum silicate fiber, the thickness of high temperature area is ≥ 340mm; the thickness of medium temperature area is ≥ 200mm; the insulation of low temperature area is 100k mineral wool felt. And specially designed air insulation layer and aluminum foil insulation reflection layer. The surface of the furnace body is installed with 0.75mm color corrugated steel plate, which is beautiful and durable.

 

3. 8 sets of internal circulation stainless steel curtain fans (noise of the curtain fan measured one meter away ≤ 85dB) shall be installed to block the heat flow overflow and uniform furnace temperature.

 

4. American heater with corundum mullite tube. The exothermic body is 0cr25al5. High temperature resistance, good insulation, long service life and low maintenance cost. The heater is evenly arranged in the furnace, with many temperature measuring points (set with 20 points), so that the temperature in the furnace is even, and the temperature difference at the main points in the furnace is ± 5 ℃.

 

5. The heating time of product heating area shall be 8-10 minutes. Make the glaze fully melted and flat, and improve the quality. The furnace temperature rise time is about 90 minutes. The product is cooled by blowing air to improve the operation conditions.

 

6. The conveyor adopts the closed rail 240-50kg suspension chain, and the rail bending part adopts the Shanghai high quality Mn steel and heat-treated suspension chain, which is reliable, flexible and long service life. A conveyor line is used for sintering and drying, with automatic oil filling on the line and heavy hammer structure for the tensioning device. Products in production do not need intermediate manual ferry, high degree of automation.

 

7. 310S high-temperature and heat-resistant steel is used as the hook of the furnace top to lift the workpiece down and ensure reliable operation.

 

8. Control system:

 

① each group of heaters can be controlled. The heater is divided into 7-8 groups. In order to ensure the temperature uniformity, the upper and lower temperature can be controlled separately at the same time.

 

② there are 20 temperature measuring points in total, including 2 temperature measuring points in the heat exchange belt and 2 temperature measuring points in the dry hot air, so as to fully grasp the temperature working condition in the furnace.

 

③ the temperature controller adopts PID digital intelligent temperature controller and Honeywell brand; the power output element adopts advanced and reliable modular solid-state relay and Gute brand of American technology; the screen display and PLC automatic setting control are specially set and delta brand is adopted.

 

9. Profile steel structure for drying furnace. The inner wall is made of 0.75 thick galvanized corrugated plate, and the outer wall is made of 0.75 thick colored corrugated steel plate. Adopt hot air drying method, hot air can blow to the inside of the product. The air purification net is set in the hot air circulation system to protect the enamel.

 

10. The drying oven is lengthened, the drying length is about 60 meters, and the speed is about 25 seconds. The drying time is about 30-40 minutes.

 

According to the principle of thermal engineering, the firing kiln adopts several special structures to make the heat dissipation of the furnace body reach a small amount, and recycles a large amount of waste heat for product drying. Compared with other similar kilns, it can save more than 150KW of electric energy and recover the investment of equipment in one year.

 

At the same time, the inlet and outlet of the drying furnace are equipped with a device to close the hot gas flow out, and the special structure is adopted to make the wall temperature of the furnace body