Is a hydraulic piston pump a positive displacement pump?

Hydraulic piston pump is a positive displacement pump. Piston pump is a type of positive displacement pump, which works by reciprocating the plunger in the cylinder body to change the volume of the sealed working chamber, thereby achieving oil suction and pressure. ‌

 

Structurally capable of achieving variable working volume with sealing performance

 

The volume of the working chamber can periodically increase and decrease, connected to the oil suction port when increasing and to the oil discharge port when decreasing.

 

3: The oil suction and discharge ports cannot be connected to ensure that liquid does not enter and exit simultaneously.

 

Definition and basic conditions of positive displacement pump

 

Positive displacement pump refers to a pump that uses changes in the internal volume of the pump cylinder to transport liquids, and it must meet the following three basic conditions:

 

 

Structurally, it can achieve a variable working volume with sealing performance.

 

The volume of the working chamber can periodically increase and decrease, connected to the oil suction port when increasing and to the oil discharge port when decreasing.

 

The oil suction and discharge ports cannot be connected to ensure that liquid does not enter and exit simultaneously.