The prefabricated component of the metering pump is actually composed of the metering pump head, the metering pump check valve, the check valve ball and the sealed ball seat and other parts, which will have relative applications in many industries.

1, metering pump head: fully consider the material and safety is very important. General metering pump impeller material selection: PP.PVC.PTF.SS316. PP: easy to form, low cost, high temperature resistance, but not suitable as an organic solution. Strong base. Strong acid. Liquid application of hypochlorite. Concentration levels are more limited. Polyethylene: easy to form, low cost, but should not be used as an organic combination of organic solvents, strong bases or acids or liquid at about 40 ° C. Can not be used as food and domestic water industry, harmful, food bags will not be easy to accept polyethylene bags. Polytetrafluoroethylene: can be used in a variety of substances, high temperature resistance, but the formation is difficult, the price is more expensive. SS316: More suitable for organic solutions and hot liquid, but can not be used under strong alkali conditions.

2, accurate measurement of pump barrier selection: basic barrier: composite barrier and pure PTFE barrier; Composite barrier: The appearance of the NBR vulcanized rubber barrier anchor bolt and the PTFE plastic film layer creates a composite barrier, and some iron mesh is placed in the vulcanized rubber chamber to improve its compressive strength. The barrier is low cost, elastic deformation, can produce small plane size large flow, reduce electromagnetic induction output, reduce manufacturing costs. However, when the electromagnetic induction is at work, due to the transmission of the anchor bolt containing the radiation source, the calories that push the electromagnetic induction will be transferred to the surface of the plastic material, which will quickly mildew and then be destroyed when it is deformed.

3, metering pump check valve: fully consider the internal layout; Check valve Check valve layout: Force check valve and extensibility check valve Force check valve: The ball returns to the surface according to its own weight to create a unilateral check valve layout. The sealing effect is very good, high pressure resistance. Ductility test: Use the ductility of vulcanized rubber itself to stimulate recycling. Low cost, can not afford high pressure. If the operation is very long, the vulcanized rubber will be bad, and the test results will be worse. Due to the corrosion of other acids and alkalis, reasonable layout will cause deformation and damage.