Design and calculation of hydraulic cylinder

working principle The plunger metering pump directly sucks and discharges the working medium (yellow) through the reciprocating motion of the plunger. Since both the plunger and the seal are in contact with the medium, selecting the appropriate plunger material and seal form can ensure the ideal performance of the pump during operation. Plunger metering pump includes valve pump and valveless pump. Plunger metering pump is widely used in the field of petrochemical industry because of its simple structure and high temperature and high pressure resistance. The plunger is made of stainless steel and oxidized ceramics, which have the characteristics of corrosion resistance, high hardness and wear resistance. In view of the shortcomings of ordinary plunger pump for high viscosity media under high pressure conditions, a valveless rotary plunger metering pump has attracted more and more attention and is widely used in the metering and addition of high viscosity media such as syrup, chocolate and petroleum additives. Due to the structural defect that the measured medium cannot be completely isolated from the lubricant in the pump, the plunger metering pump is limited in the application of fluid metering with high pollution prevention requirements. Plunger metering pump is used to accurately and quantitatively deliver liquid without solid particles to pressurized or atmospheric vessels and pipelines. Different types of plunger metering pumps can be equipped with variable frequency motor (capable of receiving 4-20mA current signal) or explosion-proof motor according to the use requirements. The plunger pump head has the advantages of simple structure, economy and high measurement accuracy. It is necessary to select and maintain the seal. The transverse automatic alignment between the plunger and the seal ensures small wear between them. Parameter characteristics of sj1-s plunger metering pump: maximum flow of single head: 50000 L / h; Maximum discharge pressure: 50MPa; Steady state accuracy ± 1%; Medium viscosity: 0-800mm2 / S; The temperature of conveying medium can reach more than 450 ℃. For more product introduction and price requirements of metering pumps Other instruments and meters are solenoid valve, spectrophotometer, etc. [1]