Understand the working principle of plunger metering pump of hydraulic press

2022-04-05 by No Comments

The plunger metering pump of the oil press directly sucks and discharges the working medium (yellow) through the reciprocating motion of the plunger. When the plunger and 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 petrochemical industry because of its simple structure and high temperature and high pressure resistance.

The plunger metering pump of the oil press directly sucks and discharges the working medium (yellow) through the reciprocating motion of the plunger. When the plunger and 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 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 the ordinary plunger pump of Hydraulic Press 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 can not be completely isolated from the lubricant in the pump, the plunger metering pump is limited in the application of fluid metering with high anti pollution requirements. Plunger metering pump is used to accurately and quantitatively deliver liquid without solid particles to pressurized or atmospheric vessels and pipelines. The plunger metering pumps of different models can be equipped with variable frequency motor (capable of receiving 4-20mA current signal) or explosion-proof motor according to the application 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. Transverse automatic alignment between plunger and 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 pump, other instruments and meters are solenoid valve, spectrophotometer, etc.

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