Introduction to the Structure of Strong Cooling System for Rotary Kiln

时间:2020-05-09 作者 :adminhk

With the rapid development of China's industry and other fields, rotary kiln has made great breakthroughs in vacuum brazing, vacuum sintering and vacuum annealing. In many vacuum heat treatment processes, high temperature rapid cooling process is needed, so the forced cooling system becomes the structural component of most of the equipment.

The forced cooling system structure of rotary kiln is generally composed of fan, heat exchanger and cooling air duct. Its structure can be divided into two types: internal circulation and external circulation. The selection of structure type of forced cooling system depends on different furnace types and technical requirements. The following are the structural types and design schemes of two forced cooling systems.

The whole structure of the internal circulation forced cooling system is located in the vacuum chamber, and the structure between the insulation layer and the furnace shell is used to form the circulating cooling air duct. This structure will be more compact, the whole structure takes up less space, and the cost is relatively low. It is usually suitable for the vacuum furnace with smaller volume.

The external circulation forced cooling system is connected to the whole forced cooling system outside the vacuum chamber, which needs the connection of pipes, valves and vacuum chamber to form the circulating cooling air duct. The cooling rate of this structure is fast, which can be applied to rotary kiln with large volume and certain requirements for cooling speed. However, the cost of such vacuum furnace volume is also increased correspondingly.

The design of forced cooling system of rotary kiln is generally divided into three parts: fan design, heat exchanger design and cooling air duct design. A qualified forced cooling system also needs to meet the qualification conditions involved in these three parts.

Through the introduction of the forced cooling system of rotary kiln in this paper, we can understand the structure and design knowledge of the forced cooling system of this equipment. We hope that the contents of this paper will be helpful to you.