Small Electric Vacuum Pump : Heat Pump System Design : Laguna Fountain Pumps.

Small Electric Vacuum Pump

small electric vacuum pump
    vacuum pump
  • A pump used for creating a vacuum
  • air pump: a pump that moves air in or out of something
  • (Vacuum pumps) Vacuum pumps can be used to gain an erection.  The pump fits over the penis and draws blood into the penis to form the erection.  You then put a soft plastic ring called a constriction ring around the base of your penis.  This keeps the erection for as long as is needed.
  • A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke.
  • a car that is powered by electricity
  • An electric train or other vehicle
  • using or providing or producing or transmitting or operated by electricity; "electric current"; "electric wiring"; "electrical appliances"; "an electrical storm"
  • (of a situation) exceptionally tense; "an atmosphere electric with suspicion"
  • on a small scale; "think small"
  • Small items of clothing, esp. underwear
  • the slender part of the back
  • limited or below average in number or quantity or magnitude or extent; "a little dining room"; "a little house"; "a small car"; "a little (or small) group"

Oberon Class Submarine
Oberon Class Submarine
On display at the Fremantle Maritime Museum. 2 x V16 diesels powering generators which charged 448 battery cell's to run electric motors for propulsion. Three Interesting Submarine Facts: 1: These motors suck their air from inside the sub [where the crew are], the motors can only be run when the sub is at, or near the surface, so air can be drawn into the submarine, either through an open hatch, or if near the surface, through a inlet snorkel. If the motors where running without an air supply from the surface, the hull would be sucked free of air, becoming a vacuum. The motors would eventually stall but the crew would suffocate. 2: Of the 7 ballast tanks, 2 are used for diesel. As the fuel level decreases, water is pumped in to keep the tanks full. This prevents the tanks from failing due to pressure when submerged. The diesel floats on the water in the tanks. Any water mixed with the fuel is separated prior to being by the motors. 3: The toilets are so small. sailors needed to drop their pants in the hallway, then reverse into the toilet, sit down and then close the door. This procedure was reversed when the job was done !!
This was actually two separate pumps manifolded together and driven by the same electric motor. Because of the cramped space, it was difficult to get a shot of the whole assembly. You can see the front of the electric motor to the right, with the shaft extending through the first volute and then a coupling, then the second volute. The plastic pipes connected to the volutes served two purposes: they were connected to the vacuum pump and were the source of suction when drawing water up from the river into the volutes prior to starting the pump. As the pump was started, the valves to the vacuum lines were closed at the vacuum pump, and the lines then became pressurized with water. The small plastic lines coming down on each side of the volute forced water into the packing glands of the pump shaft to act as a lubricant.

small electric vacuum pump