Development history of creeping pump
Number of hits:3512017-01-06 07:57:34 Sources: http://www.jinriwei.cn/gsxw/n31.html
Peristaltic pump is widely used in food, chemical, pharmaceutical, biomedical, paper making, construction, mining, water treatment and other industries, peristaltic pump can be traced back to the original design of more than half a century ago. The use of this pump in the U. S. firefighters transport Connie di Kezhou of lime slurry.
The peristaltic pump is a rotary pump volume, and its working principle is similar to the way of gastrointestinal peristalsis, delivery of solid and liquid medium. There is no strict distinction between the hose pump and peristaltic pump. In general, peristaltic pump refers to small flow (ml / min), low outlet pressure (no more than 3kg/cm2), used in the field of health and laboratory measurement. The hose pump is the large flow rate (up to 80 m / h), high output pressure (up to 16kg/cm2), used for industrial applications flow conveying and metering.
Peristaltic pump designers and users of primary importance is its ability to convey a strong abrasive media. The utility model is characterized in that the utility model has the advantages of no valve and no seal, and the only component contacting with the medium is the inner cavity of the rubber hose.
In addition, there are a lot of originality: no peristaltic pump is better than other types of pump peristaltic pump with self absorption capacity, can produce almost perfect vacuum suction; transported with liquidfoam without air resistance; the transport of high viscosity, shear sensitivity is medium strength; each turn a fixed displacement and has nothing to do with the outlet pressure a metering pump.
All kinds of advantages make the peristaltic pump more and more widely used in mining, food processing, brewing, ceramics, water treatment and other industries.
A high quality peristaltic pump life in 7-10 years, the biggest challenge is the peristaltic pump hose, which is the core part of peristaltic pump, its life is directly related to the cost of the use of pumps. It can be said that the peristaltic pump is designed to maximize the life of the hose to carry out.
Some people intuitively believe that the grinding medium determines the life of the hose, which is a misunderstanding. Abrasive medium does wear on the inner wall of the hose, the hose wall of known thickness becomes thin, thus compression is not tight within the vent or backflow and internal leakage flow decreased; to further increase the wear rate of the wall; but the peristaltic pump hose should have high quality compression hose adjusting device, in the process of using the pump the need to constantly adjust the drop to prevent internal leakage and flow. Without considering the compatibility of the conveying medium and the material of the flexible tube, the service life of the hose is the same. In fact, in addition to the hose itself and the quality of the production of rubber, the decision of the life of the hose is the primary factor of the number of compressed hoses; second factor is the compression hose, the strength and the resulting friction heat. In other words, the failure of the hose is due to the cumulative number of compression and friction heat caused by fatigue aging. The best way to extend the life span of the hose and prolong the interval of the work is to reduce the number of times the compression hose, to minimize the damage to the hose, and to make the precise compression.