Practically every hydraulic power transmission system makes use of hydraulic pumps. Enormous volumes of oil can be pushed through hydraulic cylinders or motors using hydraulic pumps. This is how the pump transforms the drive’s mechanical energy into hydrostatic energy. Pump-equipped hydraulic machines can perform various tasks, including lifting, lowering, opening and closing, and rotating parts. The mechanism that transforms mechanical energy into hydraulic energy, which combines pressure and flow, is known as a hydraulic pump. Any apparatus that can receive force input to produce pressure, producing flow is a hydraulic pump. A hand pump is a simple hydraulic pump for any low-power application where a prime mover is either too expensive or unavailable. A hand pump can provide additional power, such as when releasing hydraulic brakes on an agricultural tool being hauled by a tractor.
On the other hand, a hand pump may be employed as the primary hydraulic source, as in the case of bench top hydraulic presses or hydraulic power tools. This entails the pump having chambers that are mechanically sealed. The pump’s inlet and outlet are connected employing these chambers, and there is no direct connection between the two ports of the pump thanks to the sealed chambers. These pumps are very suitable for operating at high system pressures and ideal for hydraulics.
Types of hydraulic pumps
Every mobile or industrial hydraulic machine uses hydraulic pumps. Because industrial machines typically don’t use electric actuators, mobile applications use hydraulic pumps more frequently than industrial equipment. Hydraulic pumps are used in various industrial equipment like:
- Vacuum trucks
- Forestry equipment
- Dump trucks
- Mining machinery
Hydraulic pumps are also used in material handling products. This includes:
- Pallet jacks
- Injection moulding machines
- Presses foundries
- Steel mills
The likelihood that a hydraulic pump will be used increases with the application’s demand.
Types of hydraulic pumps
Gear pumps: The two primary types of hydraulic gear pumps are internal and external. Pumps with external gears have two spur gears, each with its spurs positioned externally. The catalysts of both spur gears in internal gear pumps are internally organized, with one gear rotating inside the other. With each gear rotation, both gear pumps supply the same volume of liquid. Hydraulic gear pumps are well-liked because of their adaptability, efficiency, and straightforward construction. They can also be employed in various consumer, industrial, and commercial product contexts because they are available in multiple configurations.
Vane pumps: These pumps are displacement pumps that may operate at different pressures while maintaining a constant flow rate. It is a self-priming pump. Because the vane pressurizes the liquid, it is referred to as a “vane pump.” This pump has a rotor that revolves inside the chamber and is equipped with a variable number of vanes. While the pump draws power, these vanes may have varying lengths and be tensioned to keep in touch with the wall. Additionally, the pump has a pressure release valve that keeps internal pressure from damaging it.