1. Select the tube â—† as a peristaltic pump hose conditions have a certain flexibility, that is, the radial compression of the hose can quickly recover the shape of a certain degree of wear resistance has a certain ability to withstand the pressure without leakage (airtight Sex is good)
Low adsorption, good temperature resistance, not easy to aging, no swelling, corrosion resistance, low precipitate â—† Hose parameters Hose specifications to the diameter, wall thickness as the main parameters, different manufacturers have different ways of expression;
Such as: with the specification code and said "diameter × diameter" said.
â—† Hose material Silicone rubber, rubber, plastic, synthetic materials, different materials show different properties, have different uses.
◆ Selection of hoses should consider the following factors: • Chemical resistance / chemical compatibility Hoses should exhibit certain good chemical properties when transferring different fluids, which is called chemical compatibility. Such as: low adsorption, good temperature resistance, not easy to aging, non-swelling, corrosion resistance, low corrosion resistance of the precipitate with the increase of the temperature decreases, at room temperature on the tube did not affect the chemicals may rise with temperature High impact on the hose.
The application of pressure peristaltic pump is limited by the pressure-bearing performance of the hose.
If the system pressure exceeds the ultimate pressure of the hose, the hose will expand, resulting in excessive hose wear or hose rupture.
Affect the hose pressure factors: material, diameter and wall thickness ratio.
Temperature hoses to adapt to the operating temperature range is the user to consider. Different materials have different temperature performance.
Size Sizes The size of the hose has a direct effect on flow rate. An excellent pump design takes into account the inner diameter and wall thickness of the hose to match the optimum hose size or tube size. The inner diameter of the hose determines the flow rate; wall thickness affects the ability of the hose to be compressed and rebound, and also has a significant impact on the life of the hose.
Certifications Hose may have to be used for related purposes. Such as the US Pharmacopoeia standard USP, the European Pharmacopoeia standard EP, the US Food and Drug Administration standard FDA, the USDA standard USDA and the National Health Foundation standard NSF.
Hose flexible / flexible / different life Hose roller resistance repeated extrusion, the ability to friction different. Different pipe, pipe, pump head, running speed has a different life expectancy. Life expectancy In the pump system is called the flexible life, in specific applications, the pump features are very consistent. Choose long life, thick-walled tube, the choice of large flow pumps, run at lower speeds can get longer hose life.
2. Select the pump head to choose a single, multi-channel transmission fluid is easy to replace whether the hose is easy to fix Hose pressure pipe clearance through the ratchet fine-tuning to adapt to different wall thickness hose roller selection: 6 roller structure relative flow slightly larger; 10 roller Fluctuations in the structure of the fluid flow smaller Trigger the structure is smart, open the card is easy 3. Select whether the need for flow control drive Whether the need for traffic Flow can be allocated How the protection level The overall structure is reasonable
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