Common cold water pump refers to the pump can be transported below 80 ° c temperature of the liquid pump called cold water pump, the temperature between 80 ° c to 120 ° c pump called the hot water pump.
The difference between cold water pump and hot water pump:
1, cold water pump features:
Common cold water pump seal packing or NBR mechanical seal, the most commonly used packing seal pump is IS single-stage single suction centrifugal pump The pump is also the earliest cold water pump products, because the filler itself requires liquid cooling lubrication Therefore, the highest temperature resistance of the pump is only about 80 degrees, and the stuffing sealed cold water pump there is a phenomenon of drip on the pump base and the surrounding pump environment have some pollution, such products have been gradually ISG and ISW centrifugal pump products Instead, ISG and ISW cold water series mechanical seal it will not have the phenomenon of water leakage, and are all used in the direct structure of the impeller on the motor shaft, noise and vibration significantly superior to the old IS series of cold water pump above Pump products are commonly used in air conditioning water cycle so is also called air conditioning chilled water circulation pump.
2, hot water pump features:
The hot water pump is also a hot water pump based on the ISG and ISW centrifugal pump series. The IRG hot water circulating pump is especially used because the pump uses the vertical mounting motor in the upper part, the pump and the motor There is also a short bracket, not because of the mechanical seal leakage caused by the water inside the motor to burn out the motor, but also in the IRG hot water pump based on the mechanical seal design and the other by external tap water cooling device hot water High temperature pump products can reach a maximum temperature of 240 ° c.
Sodium Tripolyphosphate, also Food Grade Stpp, or Stpp Detergent Powder,is an inorganic compound with formula Na5P3O10. Stpp Sodium Tripolyphosphate is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid. It is produced on a large scale as a component of many domestic and industrial products, especially detergents. Environmental problems associated with eutrophication are attributed to its widespread use in Water Treatment.
The majority of STPP is consumed as a component of commercial detergents. It serves as a "builder," industrial jargon for a water softener. In hard water (water that contains high concentrations Ethylene-Vinyl Acetate of Mg2+ and Ca2+), detergents are deactivated. Being a highly charged chelating agent, TPP5− binds to dications tightly and prevents them from interfering with the sulfonate detergent.
Because it is very water-soluble, STPP is not significantly Pvc Resin removed by waste water treatment. STPP hydrolyses to phosphate, which is assimilated into the natural phosphorus cycle. Detergents containing phosphorus contribute to the eutrophication of many fresh waters.
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