Handy things, those hand vacuum pumps

Vacuum pumps are basically those devices that create vacuums. They remove gas particles from a container or chamber so that a vacuum is left behind. It was Otto von Guerricke, a politician, scientist and inventor from Germany, who invented this useful piece of equipment. Now vacuum pumps are used in various fields, industries, and even in homes.

While most people might think of vacuum pumps as big machines powered by electricity, vacuum pumps may also come in the form of small instruments that need only human power to work. A great example of such small, but useful vacuum pumps is the hand vacuum pump.

What are hand pumps and how do they work?
A hand vacuum pump is a type of vacuum device that can be operated manually using the hand or arms with a lever or a handle. The manual force exerted by the hand puts into motion certain mechanisms that increase the pressure for gas, water, chemicals and other fluids to move. The hand lever or handle pushes up or down to create a pump cycle where in a stroke draws fluids out and another stroke expels the fluid to create a vacuum in a particular vessel or chamber.

What are the types of hand vacuum pumps?
There are two general types of hand vacuum pumps. First, the hydraulic design uses manual force to pressurize a hydraulic system. The other type of hand vacuum pump is known as the pneumatic pump, which are designed for instrument calibration and testing. Both pneumatic and hydraulic hand vacuum pumps have fluid reservoirs that are either integrated into the instrument or come in a separate container. The reservoir contains the fluid that the pump uses to charge its pneumatic or hydraulic cylinders.

What are the variations of hand vacuum pumps?
Hand vacuum pumps may also be referred to as drum pumps because it requires levers, plungers and handles that dispense fluids from a tank, a pail, or a drum. These types of hand vacuum pumps may be mounted manually or with the help of a clamp. Although hand pumps that do not have drums may already be useful certain cases might require such containers depending on the fluids used or the pumping environment at hand.

Hand vacuum pumps may also either be a reciprocating or a rotary type. Rotary type hand vacuum pumps use drives instead of cranks and levers. Reciprocating pumps, on the other hand, uses pneumatic or hydraulic pistons to generate the pressure required for moving the fluid.

Some hand vacuum pumps, known as diaphragm pumps are useful for marine applications because they are handy in pumping seawater from a bilge. These pumps use rubber discs to alternately pump air or fluid. The diaphragm gets activated by the vacuum or pressure generated throughout the pump cycle.

Hand vacuum pumps are very useful tools that make a lot of industrial and scientific procedures easier. Thanks to the invention of the vacuum pump, such tools are now available for modern-day people to use.

common typos: vacun, punp, pupm