Developed 50 years ago, the hose pump has been used in many industrial fields so far, and the customers in China are more and more accepting this new type of pumping method. Hose pump structure in the peristaltic pump division. Peristaltic pump is a rotary positive displacement pump, because of its working principle similar to the intestine to feed gas, solid and liquid three-phase medium named. There is no strict distinction between a hose pump and a peristaltic pump in principle. In general, peristaltic pumps refer to small flow rates (in milliliters / minute) and low outlet pressure (up to 3 kg / cm2), and are used for hygiene and laboratory measurement because of their good reproducibility. The hose pump refers to the large flow (up to 80 m / h), high output pressure (up to 16kg / cm2), usually used for industrial production large flow delivery or measurement. The main discussion here is a large flow peristaltic pump, also known as industrial hose pump. The primary focus of designers and users of industrial hose pumps is their ability to deliver strong abrasive media. It has no Valve, no seal, the only component in contact with the media is the inner cavity of the rubber hose, compression hoses and boots completely no contact with the media. In addition, there are many more unique features of the hose pump: hose pump has better self-absorption capacity, which is unmatched by other pumps, almost complete vacuum to inhale the liquid; in the delivery of gas-liquid mixture, Bubble liquid does not sometimes produce backflow or air leaks. It is also a good metering pump for delivering high viscosity and shear sensitive media with gentle and comfortable handling. Rotors achieve a constant displacement per revolution without worrying about outlet back pressure. With so many advantages, hose pumps are increasingly used in mining (slime pulp), food processing (chocolate, jam, honey), brewing (diatomaceous earth, hops), ceramics (ceramic slurries), water treatment (Sewage, sludge) and other industries. An imported high quality hose pump usually has a life span of 7-10 years. The main factor influencing the hose pump life is the hose pump hose which is the core part of the hose pump. Its life is directly related to the long-term The total cost of using the process. It can be said that the hose pump design and selection is actually around the hose to maximize the life to carry out. According to our intuition, the wear of the media determines the service life of the hose, but this is a common misconception. Abrasive media do wear and tear the inner wall of the hose, causing the hose wall to fall off and become thinner, thus reducing the pressure and reducing the flow to properly generate internal leakage or backflow; in fact, the inner leakage further increases the wear rate of the inner wall; The quality of the hose pump should be equipped with hose compression adjustment device, the pump used in the process of continuous adjustment to prevent the internal leakage and flow decline. Regardless of the compatibility of the conveying medium with the material of the hose, the life of the hose is the same for conveying strong abrasive media and non-abrasive mucilage. In fact, the first factor in determining the life of a hose is the number of hoses except for the type and quality of the hose itself. The second factor is the way in which the hose is compressed, its force and the resulting frictional heat. In other words, hose failure is due to the accumulation of compression and friction fatigue caused by fatigue aging. The best way to maximize hose life and extend downtime is to reduce the number of compression hoses and minimize compression and precise compression of the hose. Third, many believe that the more severe the mechanical damage caused by compression will be, and in fact the design of the surface curve of the shoe determines whether the rotor and the rubber are in surface or line contact. Obviously, the energy of the focus on the small area of ​​the instantaneous temperature on the hose damage is the largest. Fourth, generally considered imported hose installed in the domestic machine, life expectancy will be extended. In fact, this understanding is not complete, high-quality hose pumps must not only the hose quality is good, all aspects of the design is the most crucial cooperation.
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