summarize
The chemical screw pump belongs to the rotor type positive displacement pump, which has the advantages of smooth flow, small pressure fluctuation, strong adaptability to the medium, and good self-priming performance, which can not be replaced by other pumps in many working conditions. The pump body can be selected according to the transmission medium 304, 316, 316L various grades of high-quality stainless steel material, select the appropriate material, can be used for most corrosive media. Widely used in chemical, petroleum, shipbuilding, printing, paper and other industries, in addition to transport a variety of flowing media, can also transport high-viscosity fluids and containing hard suspended particles or fiber media. If used in food, medicine and other industries with high health requirements, you can also choose sanitary grade stainless steel to make sanitary grade screw pump.
Structural principle
The chemical screw pump is through the interference between the fixed stator and the rotating rotor to form a non-communicating sealed cavity, when the rotor rotates in the stator, the sealing cavity moves from the inlet end of the pump to the outlet end along the axial direction, and the medium is moved from the inlet end of the pump to the outlet end in the sealing cavity, thus forming the self-priming and conveying process of the pump.
1. Compared with gear pump, stainless steel screw pump can transport high-viscosity substances;
2. Compared with the plunger pump, the stainless steel screw pump has strong self-priming capacity and strong suction height;
3. Compared with centrifugal pumps, screw pumps do not need to install valves, and the flow rate is stable and linear.
4. And the plunger pump, diaphragm pump and gear pump is different, stainless steel screw pump can be used for pharmaceutical filling and metering;
5. Compared with diaphragm pump, screw pump can transport a variety of mixed impurities containing gas and solid particles or fiber media, can also transport a variety of corrosive substances.
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