displacement pump的意思|示意

Displacement Pump and Its Usage

The displacement pump is a kind of pump that transfers energy from a rotating mechanical device to a fluid. These kinds of pumps, both for liquids and gases, can be divided into two categories: positive displacement pumps, and dynamic pumps.

Positive displacement pumps work by forcing liquids or gases from a chamber of known volume, known as the pump chamber, and into a pipe or vessel of a larger volume. They operate by compressing the fluid continuously, or by trapping and releasing the fluid. The two main types of positive displacement pumps are: reciprocating pumps, and rotary pumps.

Reciprocating pumps are further divided into several types. The most common type of reciprocating pump is the piston pump which has a reciprocating piston in a cylinder or a piston in a chamber. Another type of reciprocating pump is the plunger pump, which has a reciprocating plunger in a cylindrical bore. The other two types are the diaphragm pump and the rotary vane pump.

Rotary pumps use rotational motion to move fluid from an inlet to an outlet. The types of rotary pumps are divided into two main categories: internal gear pumps and screw pumps. Internal gear pumps have gears that are meshed together inside a housing, and the gears will drive the fluid from the inlet to the outlet. Screw pumps work by using a rotating screw to draw fluid from the inlet and push it to the outlet.

Dynamic pumps, on the other hand, use an impeller to move liquids or gases. The impeller creates a low pressure area at the inlet, and a high pressure area at the outlet. The rotating impeller causes the liquid or gas to move from the inlet to the outlet. The most common types of dynamic pumps are centrifugal pumps and axial flow pumps.

The displacement pump is a powerful tool that is used in many industries and applications. It can be used to transfer energy from a rotating device to a fluid, move fluid from an inlet to an outlet, or generate high pressure. It is an essential device in many industrial systems.