Dewatering pumps remove water from a riverbed, construction site, caisson, or mine shaft before the digging and drilling process begins. This helps maintain a safe and dry environment for workers.
The dewatering pump uses a bladed impeller to start and maintain the movement of liquid. It then discharges the water into a cone-shaped nozzle.
Submersible Pumps
Thompson Pump in Floridawork different from other dewatering pump types. They work in conjunction with a system of tubes or containers for liquid and solids.
They use a combination of an impeller and diffuser to transform water kinetic energy into pressure. Once this happens, the pressurized water discharges through the pump’s outlet valve.
Unlike centrifugal and vertical pumps, submersible pumps do not require priming. This allows them to function underwater without clogging or slowing down.
Another benefit is that they do not rust easily, which can lead to leaks and motor damage. This reduces maintenance costs and ensures a longer life for your pump investment.
These pumps are often used in various industries, including dredging, wells, and mining. Therefore, to maximize efficiency, they must be adequately maintained and inspected.
Centrifugal Pumps
Centrifugal pumps use one or more impellers that attach to the pump shaft and rotate. This provides the energy to move liquid through the pump and pressurize it, enabling it to flow through the piping system.
The impeller consists of backward-curved vanes mounted on the motor’s shaft. Fluid enters the impeller from its axis (the ’eye’) and is pumped through the vanes along their circumference into the pump casing.
This type of pump is a common choice for many applications, including residential and commercial water pumps. They are also used in many industrial and municipal applications.
A centrifugal pump’s efficiency is a function of its specific speed, impeller design, and discharge rate. The value is expressed as e p u m p, where h and Q are pressure head (in meters) and flow rate (in kg/m3).
Vertical Pumps
Vertical pumps are a particular class of pumps used in many different applications, from water and utility services to process and exotic applications. They can operate in varying temperatures from low to high, have varying pressures, and handle many liquids ranging from ordinary water services to corrosive, flammable, and even tricky process liquids and chemicals.
How They Work
A vertical pump is above ground with an elective motor connected by a long shaft to impellers at the bottom of the pump. The spinning shaft inside is supported with sleeve bearings mounted inside the pump column and lubricated by the water passing through the pump.
These pumps are a popular choice for many applications, including moving process water in industrial plants or providing flow for cooling towers at power plants, pumping raw water for irrigation or boosting municipal water supply, and various other industrial needs. They are also helpful in different water treatment and wastewater applications.
Horizontal Pumps
The pumping process of horizontal pumps involves a series of impellers. Each impeller increases the pressure and flow of liquid by directing it to the next-stage impeller.
There are many horizontal pumps, but the most common and durable is the split-case horizontal pump. This type of pump is used in various applications across different industries.
A split-case horizontal pump is a double suction design that draws water in from both sides of the impeller. This design reduces the load on the bearings and makes them last longer.
This efficient way to move water has been known to last for decades without failure.
These pumps can be powered by electric motors and are commonly used in open-cast mining or to drain groundwater. They are also suitable for dry installation, meaning the pump casing is never underwater.
