High temperature medium transport of chemical pump structure, materials and auxiliary system put forward higher requirements, the following talk about the different temperature changes on the cooling requirements of the company and the application of chemical pump models:
1. In the temperature is not higher than 120 degrees Celsius in the medium, most of the use of the medium itself to cool and lubricate the chemical pump, most do not set a special cooling system. Such as DFL (W) pH shield chemical pump, DFL (W) H chemical pump; and because the use of suspension structure dfcz ordinary chemical pump, IH chemical pump can make the maximum temperature reached 140 DEG C to 160 DEG C; IHF fluorine pump using the highest temperature of up to 200 DEG C; only CQB ordinary magnetic pump temperature lower than 100 DEG C.
2. For the temperature at 120 degrees to 300 degrees Celsius, the need to be equipped with a cooling chamber in the chemical pump cover, the sealing chamber must be equipped with a double end mechanical seal on the coolant.
3. For the temperature higher than 300 DEG C medium and chemical pump head part need cooling and suspension bearing chamber should be provided with cooling system, structure of chemical pump is generally center bearing, mechanical seal best use of metal bellows type, but now the price is 10 times the ordinary machine seal.
