Classification of Corrosion Self-priming Pumps
At present, corrosion Self-priming pumps on the market mainly include ZXP series stainless steel self-priming pumps, FZB series fluoroplastic alloy self-priming pumps, FPZ series polypropylene self-priming pumps. These belong to corrosion self-priming pumps. Here is a brief introduction.
1. ZXP Series Stainless Steel Corrosion Self-priming Pumps
The so-called stainless steel self-priming pump is a self-priming pump made of 304 and 316L authentic stainless steel. The main parts of the pump body and impeller are stainless steel. As for motor and coupling, some parts which do not touch the medium are cast iron. This kind of self-priming pump uses closed impeller and excellent alloy to seal silicon carbide mechanically. It has high suction range and is not easy to leak all the year round. It is a self-priming centrifugal pump. It has the advantages of compact structure, convenient operation, simple maintenance, high efficiency, long service life and strong self-priming ability. There is no need to install a bottom valve in the pipeline. Before operation, it is only necessary to ensure that there is a certain amount of drainage fluid in the pump body. This simplifies the pipeline system and improves the working conditions. According to customers, the medium used is cast iron raw material and 304,316L raw material, medium temperature - 20 C - 120 C, flow rate: 3.2 - 600 m3 / h head: 10 - 80 m speed 1450 - 2900 R / min.
Mainly applicable medium: general corrosive sewage transportation, weak acid and weak alkali transportation.
2. FZB series fluoroplastic alloy self-priming pump
FZB type fluoroplastic alloy self-priming pump is manufactured according to international standards and in connection with the technical planning of non-metallic pumps. The pump body of FZB type fluoroplastic alloy self-priming pump is lined with fluoroplastics in the metal shell. All the flow passage parts are made of fluoroplastics alloy. The cover and impeller of the pump are all sintered and confined by fluoroplastics wrapped with metal inserts. The axle seal is made of bellows mechanical seal with leading external type, and the static ring is made of 99.9% alumina ceramic (or silicon nitride). The movable ring is filled with tetrafluoro material, which has excellent corrosion resistance, wear resistance and sealing. Cast steel is used to reinforce the inlet and outlet of the pump to enhance the pressure resistance of the pump. Practical application shows that FZB type fluoroplastic alloy self-priming pump has the advantages of corrosion resistance, wear resistance, high temperature resistance, non-ageing, high mechanical strength, smooth operation, reasonable structure, strict and reliable sealing function, convenient disassembly and maintenance, and long service life.
Suitable medium: strong acid, strong alkali, highly corrosive chemical media.
3. FPZ Series Polypropylene Self-priming Pumps
This series of self-priming pumps are made of Engineering plastics, which are relatively simple in price and convey high-strength toxic media. However, their service life is not long and they are not recommended for customers. At present, polypropylene Self-priming pumps are used as corrosion Self-priming pumps for plastics. Because of their limitations, the market of corrosion Self-priming pumps has been gradually introduced. Please consider the long term and carefully select them. Selective corrosion of self-priming pump products.
