Pump is a mechanical device that converts the mechanical energy of prime mover into liquid energy. Increase the potential energy, kinetic energy and pressure energy of the liquid. It can deliver the liquid to the designated place or increase the liquid to the required pressure.

Pumps are generally divided into two types – vane pump and positive displacement pump.

1) Vane pump – constantly adding energy to the liquid to increase its speed.

An example of vane pump is centrifugal pump, which uses kinetic energy to increase the velocity energy and potential energy of liquid through the conversion of impeller.

Impeller design can be divided into radial flow, mixed flow or axial flow according to its hydraulic geometry.

The regeneration pump is a centrifugal pump, but its impeller rotates in an annular channel with inlet and outlet openings.

2) Positive displacement pump (reciprocating or rotary). In a positive displacement pump, energy is periodically added to the liquid by directly applying a force to one or more movable volumes of liquid.

Examples of positive displacement pumps are diaphragm pumps or rotary cam pumps.

Diaphragm pumps use a combination of the reciprocating action of a rubber or PTFE diaphragm and a suitable check valve to pump liquid.

Rotary pump is the most widely used positive displacement pump, which is used to pump viscous liquids such as oil, syrup and paint.

Reciprocating pump is also one of the oldest pump types. They consist of pistons that move back and forth in the cylinder.

What is the purpose of the pump?

Pumps move or circulate fluids or gases in a piping system that may include heat exchangers, valves, mixers, monitoring equipment and instruments.

The pump is usually composed of pump body, rotor, support frame and seal. The pump is installed in a shell. The pump casing is the main fixed part of the pump and provides two main functions:

  1. Convert the speed energy of the rotor into pressure energy and guide the water flow to the discharge port.
  2. As the pressure boundary of the pumped liquid.

The rotor is the rotating part of the pump, usually made of iron, steel, aluminum or plastic. It transfers energy from the motor driving the pump to the pumped fluid by forcing the fluid outward from the rotation center.

The pump is equipped with a sealing device to ensure that the area where the pump shaft enters the pump housing is properly sealed.

Gland packing and mechanical seal are two types of devices used in pumps at present.

Attach anatomical photo.

An industrial pump is a process pump that is usually used for clean / non corrosive fluids that may or may not contain solids, such as sewage.

Chemical pumps are process pumps usually designed for corrosive fluids, usually under high temperature and high pressure. They may also contain small solids.

Huanggong can provide a wide range of industrial and chemical pumps, including:

Positive displacement pump (screw pump, gear pump), centrifugal pump (self-priming centrifugal pump, sanitary pump, sewage pump, etc.), diaphragm pump, marine hydraulic & electric deep well pump and other pump accessories.

Positive displacement pump refers to the pump that uses the change of pump cavity volume to transport liquid.

The main types of positive displacement pumps are:

Screw pump

Gear pump

Diaphragm pump

Piston pump

Plunger pump

Sliding vane pump

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