Rotary vane vacuum pump in solvent-free liner

Rotary vane vacuum pump in solvent-free lining of practical application

In solvent-free liner forming, vacuum technology was used to deaerate and dehydrate liner slurry. Due to the solvent free lining slurry viscosity, the use of rotary plate vacuum pump vacuum treatment, on the one hand can reduce the pores in the lining, on the other hand can also remove the slurry water, if the slurry contains trace water, lining solidification, will form a small hole in its internal. After vacuum degassing and dehydration treatment, the lining can be fine and even, which is beneficial to enhance the function of the lining itself.

Liner is a transition layer that realizes the bonding between the insulation layer (or shell) and the propellant. Its main function is to bond the propellant firmly with the insulation layer or shell.

Rotary vane vacuum pump in solvent-free liner
Rotary vane vacuum pump mainly consists of pump body, rotor, vane, end cover, spring, etc. A rotor is installed eccentrically in the cavity of the rotary vacuum pump. The outer circle of the rotor is tangent to the inner surface of the pump cavity (there is a small gap between the two). Two rotary blades with springs are installed in the groove of the rotor. When rotating, centrifugal force and spring tension make the tip of the vane and the inner wall of the pump cavity keep in contact, rotor rotation drive the vane sliding along the inner wall of the pump cavity.

The test piece made of deaerated and dehydrated slurry with rotary plate vacuum pump has a fine interior, no pores on the natural surface, and the mechanical function of solvent-free liner after vacuum treatment is improved obviously. By degassing, the lining can be compact and even, and the performance of the lining itself can be effectively enhanced.

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