Mesh belt furnace

Structure and working principle of net belt furnace

The ventilator consists of a blower and a wind deflector, and the blower motor has an electrical chain with the heating element. The heating element can be energized only when the blower is connected, so as to ensure that the heating element can work in the case of ventilation circulation.

Furnace lining: the furnace body part is made of whole fiber, fiber according to the size of the furnace customized into modules, the fiber is compressed into blocks for on-site construction of cotton, fixing method is fixed by wearing the block fiber and hook nails, that is, uniform wearing in the block fiber cotton, and then hook nails hook through the block, pulled and welded with the furnace body. High aluminum brick is used in the pressure-resistant part of the trolley, and the lower part is insulated with thermal insulation brick.

The lift of the furnace door is through the roller on the guide rail. It is realized by rolling up and down, and is sealed by advanced spring pressing device, which not only ensures the sealing between the fiber of the furnace door and the fiber of the furnace body when it is closed, but also ensures that the fiber will not be damaged by friction in the process of opening and closing. The power of the furnace door and the trolley is provided by the electric motor, and has the controllable braking function.

Each moving mechanism of the electric furnace adopts interlocking control, that is, the power supply of the heating element is automatically cut off after the furnace door is opened, and the power supply of the trolley is restored at the same time. After the furnace door is closed, the power supply of the trolley motor is automatically cut off, and the power supply of the heating element is restored to prevent accidents due to misoperation.

The heating element is wound with high temperature resistance alloy wire to make a ribbon and spiral, respectively hanging on the furnace side and the shelf of the trolley wire tile, and fixed with high aluminum porcelain nails and wire tile to prevent out.

The trolley is equipped with a cast-steel furnace bottom plate that can withstand pressure and high temperature to bear the workpiece. In order to prevent the oxide generated after the workpiece heating from falling into the heating element through the gap between the furnace bottom plate and causing damage to the heating element, the plug-in contact between the furnace bottom plate and the furnace body is adopted.

The furnace is divided into multi-zone temperature control, the furnace temperature control system uses advanced intelligent temperature control instrument to achieve temperature rise and temperature control in the furnace, the system has advanced intelligent PID control algorithm, five large LCD display, with perfect self-tuning, adaptive functions, control temperature and furnace temperature display at the same time. It can be programmed and controlled according to the process requirements of the workpiece, automatically adjust and control the heating power in the furnace, easy to operate, and the supporting control system also has functions such as sound and light overtemperature alarm. The power trigger of the furnace temperature control system adopts three-phase three-wire contactless output module supporting bidirectional thyristor, and the temperature control is accurate and stable. The system is also equipped with a temperature recorder, which can timely and accurately record the temperature of each furnace for inspection.