What Are the Characteristics and Classification of Sanitary Pump?

Sanitary pumps are the classification of pumps from the use occasion of the pumps, specifically involving the transportation of all products that come into contact with the human body, such as pharmaceuticals, dairy products, beverages, food, cosmetics, food additives, fine chemicals, etc. There are four basic types of sanitary pumps, centrifugal type, volumetric type, jet type and air type. Centrifugal pumps apply centrifugal force to produce speed, use rotating impellers to increase speed, and push fluid through the outlet valve.

From the point of view of the pump material, the material of sanitary pumps must be 316L stainless steel. There is no hygienic dead space in the pump cavity. The sealing material is food grade material, such as nitrile rubber, fluororubber, ethylene propylene rubber, Teflon, etc.

1. Working Principle and Performance

Sanitary pumps manufacturers must pay attention to improving the reliability and life of electric pumps. China's submersible electric pumps have obvious price competitive advantages in the international market. In particular, it is necessary to improve the appearance of submersible electric pumps and give users a sense of beauty, so that domestic-made submersible electric pumps can enter the international market as soon as possible.

Since the submersible electric pump itself and the pumping station using submersible electric pump have many advantages. In the future, the demand of submersible electric pumps will continue to grow, and it has the following main development trends.

1) Development of large and medium-sized submersible electric pumps. 

Large and medium-sized submersible electric pumps have the outstanding advantages of simplifying the pump structure and saving investment in the construction of pump stations. It will be more and more widely used in municipal, industrial and mining, environmental protection and industrial and agricultural water supply and drainage. It is expected that the future demand will be larger. Pumps with cutting devices, multi-stage pumps, submersible electric pumps for pumping corrosive media, etc., are still rarely produced.

2) Development of multi-functional and multi-purpose submersible electric pumps.

The types of submersible electric pumps in China are not enough compared with the products of famous foreign submersible electric pump manufacturers. However, its market demand is very large, so it has a very good development prospect.

3) Development of high-reliability mechanical seals.

Mechanical seals are a key part of submersible electric pumps. With the mechanical seals, the pressure of the medium can act on the end face, and the leakage direction is inward flow type, which is advantageous, but the structure is slightly more complicated. The mechanical seal of double end face is installed in the oil chamber. The end faces on both sides should adopt different structural styles, so that the pressure of the medium can act on the lower end face. Otherwise, only the spring force will cause the reverse thrust of the seal end face to easily open. Therefore, further research should be conducted on the structure and data to improve its reliability and life. All these data should be applied to the submersible pump as soon as possible.

4) New materials, new technologies, new processes, etc. will be gradually applied.

Ordinary pumps uses stainless steel, fluoroplastics (F46 lining plastic, rubber lining, spraying ceramics, etc.) to expand the application field of submersible pumps. The application of new technologies and new processes such as computer-aided design, auxiliary manufacturing, and auxiliary testing is also imperative. Facts have proved that the application of new technologies, new materials and new processes not only liberates labor productivity, but also guarantees product quality.

2. Classification

Sanitary pumps can be divided into sanitary self-priming pump, sanitary centrifugal pump, stainless steel sanitary pump, etc.