Industrial Pumps Categories: Introduction and Applications

Posted on May 14, 2019

Industrial Pumps Categories: Introduction and Applications

A pump is equipment that moves liquid substances through its mechanical action. Traditionally, pumps can be divided into three main types according to the method of moving and transferring fluid.

Industrial Pumps Categories Described and Explained In Detail

A pump is equipment that moves liquid substances through its mechanical action. Traditionally, pumps can be divided into three main types according to the method of moving and transferring fluid.


Industrial Pumps Sorting

These three methods of moving fluid are divided into direct lift, displacement, and gravity methods. In other words, there are direct lift pumps, displacement pumps, and gravity pumps.

In mechanical structures, pumps are usually operated by typical reciprocating or rotating mechanisms, which consume energy to perform mechanical work and move fluids or gases. Industrial pumps can be made according to all those mechanisms, based on the working requirements.

Regarding location, the mechanical industrial pumps can be submerged in the fluid it pumps or placed outside the fluid. The pump can be divided into positive displacement pumps, impulse pumps, velocity pumps, gravity pumps, steam pumps, and valve-less pumps according to its displacement method. In addition, there are two basic types of pumps, namely positive displacement and centrifugal pumps.


Driving Source

A pump is widely used mechanical equipment that can be driven by many types of power sources, such as manual operation, electricity, engines, and even sustainable energy sources such as wind power.

These energy sources can be a variety of equipment, varying in size, from a micro microscope for medical use to large industrial pumps in waterworks, or from the transmission of machine tool coolant to industrial pumps of ordinary size.

Pumps have a wide range of applications in industry, such as pumping water from wells, aquarium filtration work, and pond filtration tasks. In the automotive industry, pumps can be used for water cooling and fuel injection. In the energy industry, pumps can be used to transport oil and gas and to operate cooling towers.

In the machine tool industry, pumps are often used to move cutting fluids and coolants. In the medical industry, pumps are sometimes used to develop and manufacture drugs in biochemical processes, and as artificial substitutes for human body parts, especially artificial hearts and penile prostheses.

:: Read more : A Brief Introduction: What Is An Industrial Pump?


Single-Stage Pump

The number of impellers is the key to the design of the pump, because the number of impellers determines the working mode of the pump and the strength of liquid delivery. A pump that contains only one revolving impeller is called a single-stage pump, while two or more revolving impellers are called a two-stage or multi-stage pump. The difference between the impellers is related to the movement mechanism.

In the application of biology, many different types of chemical pumps and biomechanical pumps have been developed. The concept of BIOMIMICRY is sometimes used in the development of these new mechanical pumps.

Just like in the early days when people tried to study birds to achieve human flight. Through this endeavor, there are many biological imitation cases that help to improve the scientific research. Pump developers also try to get innovative ideas from nature.

:: Read more : You Will Be Surprised at How a Multistage Centrifugal Pump Can Help


Pumps Adopting Positive Displacement

The positive displacement pump draws a fixed amount of liquid and forces it into the discharge pipe, so that the liquid flows. Generally, positive displacement pumps use expanding cavity on the suction side and decreasing cavity on the discharge side.

With this method, when the cavity on the suction side expands, the liquid flows into the pump, and when the cavity collapses, the liquid flows out from the discharge port. It can be ensured that the flow is constant during each cycle.

Positive displacement industrial pumps can produce the same flow at a given speed, regardless of the discharge pressure. However, as the pressure increases, the internal leakage will increase slightly, thus preventing a truly constant flow.

That is, since the positive displacement pump does not have a closing valve like a centrifugal pump, the positive displacement pump cannot close the valve against the discharge side of the pump. Therefore, the positive displacement pump continues to generate flow under the action of the closed discharge valve, and the pressure in the discharge line continues to increase until the line bursts, severely damaging the pump.

For safety reasons, it is usually necessary to install a relief or safety valve on the discharge side of the positive displacement pump. Both pump manufacturers and users should pay attention to this issue. The relief valve can be installed inside or outside.


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