Extra long hose life
The first factor determining hose life is the number of times of compression hose; the second factor is the way, strength and friction heat of compression hose. The best way to maximize hose life is to reduce the number of times of compression hose, adopt the compression method of minimal damage to hose and precise compression strength.
1. The HPP hose pump roller compresses the hose only once per turn, which decisively prolongs the hose life.
2. Judging from the degree of damage to hose, large diameter rollers are undoubtedly stronger than small diameter rollers and slippers. One of the most important factors for the low service life of the hose of traditional U-shaped pump is the impact of roller or slipper on the inlet and outlet of hose. The other parts of the hose are far from fatigue aging, but the parts in contact with the rotor at the inlet and outlet are damaged and burst due to the strong impact of the rotor, so that the whole hose is scrapped.
The large diameter pressure rollers of HPP pump open and close the inner chamber of hose more gently; when switching between inlet and outlet, it reduces the impact on hose and the intensity of pulsation. Moreover, only one switching per turn produces one pulsation. 3. Eliminate sliding friction--The area of contact between large diameter roller and hose of HPP hose pump is more than two times larger than that of small diameter roller of multi-roller pump, just as the grip performance of large diameter wide tire is better, it completely eliminates sliding friction, even if it runs at high pressure and high speed, it produces only a little rolling friction heat. Under the same conditions, the pump body temperature of HPP hose pump is 5 degrees lower than that of multi-roller pump.
4. Minimum compression strength-the pressure roller or slipper compression hose must have a certain amount of interference, so that the inner cavity of the hose is completely closed, in order to ensure that it can withstand the high pressure of the outlet without internal leakage. Insufficient compression will result in backflow, decrease in volume efficiency, self-priming ability and flow rate. At the same time, impurities in the media will scour violently, wear and tear the inner wall of the compressed hose, and make the hose life drop rapidly. Excessive compression will increase the bearing load and energy consumption. Even if the interference compression is more than 1 mm, the hose life will be reduced by 25%. Therefore, the correct compression strength is an important factor to prolong the service life of hose.