A helical gear pump and a screw pump are very similar in principle. However, there are some key differences. This article will explain the difference between a helical gear pump and a screw pump so that you can choose which is best for your uses.
Helical gear pumps have a lower RPM than screw pumps
This makes them ideal for applications in which the pump must operate continuously, such as water purification and filtration. Because of their low RPM, helical gear pumps can be used to deliver power at high pressures without damaging the pump itself. In fact, this is a major advantage over screw pumps that can only deliver power at lower pressures.
Helical gear pumps work by having multiple gears stacked one atop another with each gear pulling on its adjacent gear through a series of rolling bearings. This design allows the gears to turn at very high speeds while minimizing friction between them. The result is a very smooth rotation that reduces noise and vibration levels as well as increases efficiency by allowing more work to be done per revolution of the pump’s shaft (RPM).
Helical gear pumps have higher volumetric efficiencies than screw pumps
Helical gear pumps are used in a wide range of applications and are preferred for their high volumetric efficiency. The helical gear pump is an efficient and reliable pump for liquids with a high viscosity. It has low power consumption, low wear and no lubrication required.
Helical gear pumps are available in both positive displacement and displacement types. The positive displacement type is more common, as it has a smaller diameter which makes it easier to install in a small space.
The torque required to turn the shaft of the helical gear pump increases with increasing pressure. This means that the helical gear pump can operate at higher pressures than screw pumps without requiring special protection measures such as heat exchangers or cooling fans.
Helical gear pumps require more power input than screw gear pumps
Helical gear pumps are used in the oil industry, water treatment and waste water treatment. They are also used in other industries such as textile, food processing, pharmaceutical and chemical industries.
Helical gear pumps have higher volumetric efficiencies than screw pumps. They are able to deliver more volume per revolution than conventional screw pumps. This is because the helix of the pump allows it to build up pressure over time rather than all at once which would be a disadvantage when compared with a conventional screw pump.
Helical gear pumps have higher operating temperatures than screw gear pumps
Helical gear pump operating temperatures range from -20°F to +130°F (-29°C to 55°C). As the temperature of a helical gear pump increases, the speed of the shaft increases. The higher the operating temperature, the faster the shaft spins.
Helical gear pumps are designed for applications where low-speed operation is required, such as cooling water or oil system components. They are not intended for high-pressure systems with large volumes of liquid flow or for medium-pressure applications where high operating temperatures are required.
The helical gear pump is more susceptible to corrosion than the screw gear pump
The helix has a narrow diameter, which makes it less susceptible to corrosion. The screw gear pump, on the other hand, has a large diameter and can easily accumulate rust.
The helical gear pump is more susceptible to corrosion because it has a narrow diameter. This makes it harder for water and dirt to get inside the pump so that they cannot cause corrosion. However, if there is any water or dirt inside the tube, it can still cause damage to the pump by creating friction which will eventually wear out the teeth or bearings of the gears inside.
The screw gear pump has an outer cover that protects its inner parts from rust and corrosion but this cover is not as effective as the one found on the helical gear pump. This is because it is larger in size and therefore allows more dirt and water into its inner parts thereby increasing its susceptibility to corrosion.
Helical gear pumps have minimal pulsation, while screw gear pumps produce high pressure pulsations at low speeds
Helical gear pumps have a cylindrical or conical gear set with one or more helical spur gears meshing with the driven output shaft. The helical gears are mounted on a shaft that is free to rotate in bearings and is driven by an input shaft.
The helical gear pump is a centrifugal pump that uses the rotation of two or more rotating disks or bars to separate liquid from solids, compress air and raise water levels in well fields and drill holes for oil wells. It has low-speed and high-speed models, which use either helical or spiral gears to drive the impeller shafts.
Helical gear pumps are much more robust than screw pumps
The helical gear pump has a construction that is more durable, and less likely to fail. This is because it uses gears instead of screws or other fasteners. As a result, it can withstand heavy duty use without breaking down.
The helical gear pump also has an increased capacity than its screw-type counterparts, which allows for a higher flow rate. This is especially beneficial when dealing with high pressure applications where you need to pump up oil or water quickly and efficiently.
Furthermore, the helical gear pump can be adjusted easily to fit within the space available on your application. This makes it ideal for small or large spaces where you need to pump up liquids or gases quickly and efficiently at any location you choose.