Basic Structure of a Manual Oil Pump
Although simple in appearance, a manual oil pump has a sophisticated internal design, mainly consisting of several key components: a piston, a cylinder, an inlet valve, and an outlet valve. When the operator moves the handle up and down, the piston reciprocates within the cylinder, changing the internal air pressure to draw in and expel oil. This design requires no electricity and relies entirely on manual operation, making it suitable for use in environments without power.
Step-by-Step Analysis of Working Principle
Suction Stage: When the handle is lifted, the piston rises, creating a low-pressure zone within the cylinder. The inlet valve opens, and oil is drawn into the cylinder.
Discharge Stage: When the handle is pressed down, the piston descends, increasing the pressure within the cylinder. The inlet valve closes, the outlet valve opens, and oil is expelled.
Circulation Process: The above actions are repeated to achieve continuous oil pumping.
Application Scenarios and Characteristics
Due to its simple structure and easy maintenance, the manual oil pump is widely used in small oil drums, lubrication of mechanical equipment, and other applications. Its greatest advantage is that it is not limited by power supply, and it also features durability and low cost. During use, it is important to keep the valves clean and regularly check the seals to ensure efficient oil pumping.
