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The principle of reciprocating vacuum pump

The ultimate vacuum of reciprocating vacuum pump (also known as piston type vacuum pump) is 4 X 102Pa--103Pa, 1Pa with double stage, 45m3/h -- 20000m3/h, which is used to remove gas from the sealed container. It's not more than 35t,

If you add auxiliary equipment, such as freezer, you can also pump swallow. Reciprocating vacuum pump exhaust t is larger, more used to deal with the vacuum impregnation, liquid steel vacuum, vacuum distillation, vacuum YanFa, vacuum concentration, vacuum crystallization, vacuum dry bath, vacuum filtering and concrete pumping gas vacuum operation, etc.

Reciprocating vacuum pump is not suitable for the removal of corrosive gas or the gas that contains children's dust. If dust is included in the exhaust, the filter must be added to the inlet of the pump.

The oil-free reciprocating vacuum pump is not lubricated in the cylinder because of the piston ring and sealing ring of self-lubricating material. In addition, the oil chamber (whose length is greater than one stroke length) is added between the cylinder and the body to prevent the internal lubricant from leaking cylinder along the piston rod. Therefore, the pump is free from pollution of the pumping system. No oil reciprocating vacuum pump has vertical and horizontal structure.


The principle of reciprocating vacuum pump


The application scope of the pump is:

It requires a clean vacuum;

When the gas bird is to be recycled, the gas can be recovered in the inflatable chamber to ensure the purity of the gas.

When the flammable and explosive gas is removed, the inert gas can be charged to the isolation chamber, so that the air can not leak the cylinder to avoid the accident.


Principle of reciprocating vacuum pump:


The working principle of reciprocating vacuum pump is shown in the figure. The main component is cylinder 1 and piston 2 in which the reciprocating linear motion is made. The piston is driven by a crank link 3. In addition to the above main components there are exhaust valves 4 and suction valve 5.

In operation, the piston in the cylinder is reciprocated by the action of the crank connecting rod mechanism. When the piston within the cylinder when the movement from left to right, because the left cavity of the cylinder volume increasing, the density of the gas in the cylinder is reduced, and form extraction process, the container gas passes through the suction valve 5 into the left cavity pump body. When the piston reaches the right position, the cylinder is full of gas. Then the piston moves from the right to the left, and the suction valve 5 closes. Gas in the cylinder is compressed gradually along with the piston movement from right to left, when the pressure of the gas in the cylinder at or slightly greater than the atmospheric pressure, the exhaust valve 4 is opened, the gas into the atmosphere, to complete a working cycle. When the piston moves from left to right, it sucks in a part of the gas, repeating the previous cycle, and so on and so on until it reaches a stable equilibrium pressure.


The principle of reciprocating vacuum pump

The principle of reciprocating vacuum pump


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