Hydraulic double-acting pumps

[radwa]

Will u please help me in telling me how do hydraulic doble-acting pumps work EXACTLY and the explanation of the spools function.

 

[Artman]

Will u please help me in telling me how do hydraulic doble-acting pumps work EXACTLY and the explanation of the spools function.

A double acting pump moves fluid when the piston is moving in either direction.

A system of check valves opens and closes to allow one side to draw in fluid while the other side is pressing it outward, then as the piston changes direction the opposite side draws in fluid and the other side presses it outward. This makes for a fairly steady movement of fluid.

A single acting would be similar to an average hand operated tire pump. When you press down it blows into the tire when you draw back it fills with air. A double acting pump would blow into the tire when the pump is pressed down AND drawn back.

Not sure what spooling is.

 

[ravenprp]

Hydraulic double-acting pumps are devices that use fluid pressure to generate mechanical power. They are commonly used in various industrial and commercial applications, such as in hydraulic presses, cranes, and lifts.

The working principle of a hydraulic double-acting pump is based on the use of a reciprocating piston, which moves back and forth within a cylinder. The pump is connected to a hydraulic system, which consists of a reservoir, piping, and actuators. The reservoir holds the fluid (usually oil) that is used to power the system. The piping connects the pump to the actuators, which are the devices that convert the fluid pressure into mechanical force.

The pump has two chambers, known as the suction and discharge chambers. The suction chamber is connected to the reservoir, while the discharge chamber is connected to the hydraulic system. As the piston moves back and forth within the cylinder, it creates a vacuum in the suction chamber, which draws in fluid from the reservoir. This fluid is then pushed into the discharge chamber as the piston moves in the opposite direction. The fluid is then forced out of the pump and into the hydraulic system, where it can be used to power various actuators.

The spool is a vital component of a hydraulic double-acting pump. It is a cylindrical valve that controls the flow of fluid within the pump. The spool has two positions, known as the neutral and working positions. In the neutral position, the spool blocks the flow of fluid between the suction and discharge chambers, preventing the pump from operating. In the working position, the spool allows the fluid to flow between the two chambers, enabling the pump to generate mechanical power.

In summary, hydraulic double-acting pumps work by using a reciprocating piston to create a vacuum in one chamber and force fluid into the other chamber. The spool controls the flow of fluid and allows the pump to operate or stop depending on its position. This mechanism enables the pump to generate mechanical power, which can be used to operate various hydraulic systems.