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Small displacement plunger pump is an important device in hydraulic system. It depends on the plunger reciprocating movement in the cylinder block, so that the volume of the sealing chamber changes to achieve oil absorption, pressure oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow regulation, etc., and is widely used in high pressure, large flow and flow need to adjust the occasion, such as hydraulic press, construction machinery and ships.
Advantages of plunger pump:1, high parameters: high rated pressure, high speed, high driving power of the pump.2, high efficiency, volume efficiency is about 95%, the total efficiency is about 90%.3, the main parts of the plunger pump are compression stress, the strength of the material can be fully used.4. Convenient variables and many forms.5. Light weight per unit power.Ii. Disadvantages of the plunger pump:1, the structure is more complex, the number of parts is more.2. Poor self-priming.3. High manufacturing process requirements and high cost.4. Oil is sensitive to pollution, requiring high filtration accuracy and high requirements for use and maintenance.
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