Electric butterfly valve has regeneration function, how to regenerate?
1。 Regeneration after adsorption of water vapor
After water absorption, it can be removed by thermal desorption. There are many heating methods, such as electric heating furnace, flue gas waste heat heating and hot air drying.
The heat exhaust temperature shall be controlled at 120-180 (?) C and 100-120 (?) c for blue indicator light, color change and DL type blue. The maximum temperature of various industrial regeneration shall not exceed the following limits:
Large holes shall not be higher than 600 ℃.
Pores shall not be higher than 200 ℃.
Blue glue indicator (or discoloration) shall not be higher than 120 ℃.
Silicon aluminum gel shall not be higher than 350 ℃.
2。 Regeneration after adsorption of organic impurities
(1) Calcination method: for coarse porous materials, they can be put into the calciner and gradually heated to 500-600 ℃ for about 68 hours until the particles are white or brown. For micropores, the calcination temperature should not exceed 200 ℃.
(2) Washing method: after absorption in saturated steam, soak and wash in hot water, which can be combined with detergent to remove waste oil or other organic impurities, and then dry and dehydrate after washing with clean water.
(3) Solvent cleaning method: according to the type of organic matter adsorbed, select a suitable solvent to dissolve the organic matter adsorbed, and then heat to remove the solvent.
III. Problems needing attention in regeneration
During drying and regeneration, attention should be paid to gradually warming up to avoid serious drying resulting in rubber particle burst and reducing the recovery rate.
In the process of baking and regeneration, too high temperature will cause changes in the pore structure, which will significantly reduce the adsorption effect and affect the use value. For blue glue indicator or discoloration, the desorption and regeneration temperature should not exceed 120 ℃, otherwise, the gradual oxidation of the developer will lose its color development effect. Electric butterfly valves are widely used for equipment vibration isolation in industrial machinery, such as precision machinery equipment and precision testing equipment such as presses, air compressors, centrifuges, vibration conveyors, control hammers, casting machinery and textile machinery, optical and laser instruments, integrated circuits, ultra precision machine tools, etc. In paper making, textile and other industries, paper or cloth needs to bypass many transport rollers at a high speed during winding, so constant tension is required during transmission to prevent paper or cloth from loosening, twisting or cracking. In this case, the combination structure of hollow roll and electric butterfly valve can provide constant tension. Moreover, it has a strong ability to withstand impact load, and protects the transmission device and transmission parts from damage. The electric butterfly valve is very suitable for high pressure and small stroke conditions. In the bonding process, the use of electric butterfly valve can provide uniform pressure to ensure the bonding quality. Field application shows that the electric butterfly valve has better buffering effect and longer service life than the steel compression butterfly valve, which can improve equipment efficiency and extend equipment service life.