reaction kettle is a common mechanical equipment in modern industry, which is widely used in coating, medicine, food, chemical industry, pigment and other industries. The reactor is generally made of stainless steel, carbon steel and other materials. Different production processes and requirements can be configured with different heating and cooling devices. The structure of the reactor is composed of stirring shaft, shaft seal, transmission device, motor, agitator and other parts. Today, we will first learn more about the stirring shaft and shaft seal of the reaction kettle.

Stirring shaft of reaction kettle

The power output of the motor in the agitator is transferred to the agitator through the agitator shaft, so the strength of the agitator shaft is very important. The stirring shaft in the reactor should not only be connected with the reaction kettle, but also pass through the shaft seal device, bearings, couplings and other components. The structure of the stirring shaft must be reasonable in design.

The shaft seal of the reaction kettle

Shaft seal is an important part of reactor kettle. The shaft seal belongs to the dynamic seal. The shaft seal is to ensure that the reactor kettle is in a certain pressure or vacuum state, to prevent the overflow of the stirred material or the infiltration of the external impurities of the tank. Not all the rotating shaft seals can be used in the stirring equipment. In the reaction kettle equipment, the shaft seal has liquid seal, packing seal and mechanical seal.

Liquid seal: liquid seal structure is simple, there is no direct contact with the drive shaft friction parts, in the reactor kettle equipment working pressure under the atmospheric pressure, the role of the shaft seal is only used to prevent dust, impurities into the tank, or just to isolate the working medium and the reactor kettle equipment around the environmental media contact each other, the liquid seal can be selected.

Packing seal: Packing seal is a shaft seal structure used earlier in reaction kettle equipment. The packing seal has the advantages of simple structure, low manufacturing requirements, convenient maintenance, etc., but the packing is easy to wear, the sealing effect is not reliable, suitable for atmospheric pressure, low pressure, no corrosive materials.

Mechanical seal: mechanical seal is the sealing surface of the rotating shaft from axial to radial, through the two end faces of the moving ring and the static ring each other, and the relative movement to achieve sealing device. The mechanical seal has the advantages of low leakage rate, reliable sealing, low power consumption and long service life, which can meet the requirements of production automation and various high temperature, high pressure, high speed, low temperature and corrosion. Sealing requirements for materials containing solids.