Vacuum cleaners are industrial cleaning machine that collect and convey the waste and materials. The machines use a vacuum pump to drain the air of the hopper. There are some different models of vacuum pump which are different in structure and how to create a vacuum. In this article, we will introduce different types of vacuum pump used in vacuum cleaner.
Vacuum cleaners are made of three main parts: motor, vacuum pump and filtration system. The filtration system is used for trapping fine particles and preventing their return to the environment. The vacuum pump makes a relative vacuum in the embedded reservoir driven by the engine. Vacuum pumps play an important role in the operation of vacuum cleaner.
Centrifugal, Chanel Seal, Blade, Lobe and Venturi Pump are the most popular pumps used in vacuum cleaners. Each of these types of pumps will be introduced separately in the following.
The Centrifugal pumps are connected to the engine by means of a shaft directly and operate on the basis of centrifugal force. By rotating the pump, the central part of the air is sent around due to centrifugal force. The result is a relative vacuum in the pump center. The centrifuge pump has a decent price and Create a vacuum of 25 percent.
In channeled side pumps, the air comes from the channel to the pump. This air is driven by the blades and directed to the outlet edge. At this point, the air can’t pass, and only the blades can pass through it. The result is the creation of a vacuum inside the hopper. The side channel pumps have low sound levels and create a vacuum of 30 to 60%.
In the lube pumps, at least two lubes are designed that move on two separate axes. By rotating the two lobes in the opposite direction and tangentially together, the air is trapped and moved to the outside of the pump. The lube pump is silent and create a vacuum of 70 to 80 percent.
Blade Vacuum pumps are made up of two non-center butterfly disks. The smaller disk has a blade and moves into the fixed disk. By rotating the disk, the blades open and contacts the edge of the outer disk. This rotation causes the air to flow into the pump. When the blades are tangled with the outer disk, the air is trapped and driven out of the pump. The pumps create a vacuum of 80 to 90 percent.
In the structure of the Venturi pump, there is a channel for passing through the air that has a branch in its path. Compressed air passes through the Venturi channel and leaves from the other side. Therefore, create a vacuum in the branch created between the airway’s path. So the air is pumped out from the inside of the hopper. Venturi pumps do not need a motor and can be used in the structure of explosion-proof vacuum cleaners.