Return to work after the rotary-vane vacuum pump selection using the five considerations -

rotary vane vacuum pump is mainly used to obtain low, vacuum degree, it can be divided into the oil seal and dry pump, according to the requirements of the vacuum degree, also can be divided into single-stage and two-stage pump ( Use the more common) 。 Rotary vane vacuum pump is mainly composed of pump body, rotor, vane, end cover and spring etc. In rotary vane vacuum pump cavity, installation of a rotor with an eccentric, and outside rotor cavity surface tangent, rotor slot is equipped with two rotary vane with spring. When the rotor in the process of operation, rotary vane can along its radial slot into reciprocating sliding, and always in contact with the pump shell surface, the rotary vane with rotor rotation, and the vacuum pump cavity is divided into multiple variable displacement space.

in the use of the rotary-vane vacuum pump, the need to pay attention to the following

1. Before using rotary vane vacuum pump, it is necessary to maintain the cleanness of pump, so as to avoid clutter in the pump body. Check the oil, the oil to the middle of oil standard, if too low will be less than the oil seal of exhaust valve, the influence on the vacuum degree of vacuum pump; If too high, can produce injection reaction. When the vacuum pump is running with a normal amount of oil. To pump the gas, the use of vacuum pump brand clean vacuum pump oil, the oil hole to join, to prevent other debris into the vacuum pump oil storehouse, filtering and blocking oil hole.

2。 When rotary vane vacuum pump working environment temperature is too high, rotary vane vacuum pump oil temperature will also rise, this is hot molecular motion is accelerated, oil viscosity, cause saturation vapor pressure, resulting in ultimate vacuum become low, DE nair vacuum pump manufacturer technicians, points out that want to make the vacuum degree of vacuum pump is improved and can increase the wind, to improve the quality of the vacuum pump oil, reducing temperature accelerated cooling.

3。 In the process of use of the rotary-vane vacuum pump operation, extraction material should not be high oxygen content, high water vapor content, flammable and explosive as well as to the metal corrosive gas material, some material is not stable, and the vacuum pump oil can also produce chemical reaction, unfavorable also extract such gases.

4。 If you want to in the rotary vane vacuum pump electromagnetic valve is installed in place of the mouth, with the pump to operate the water pump at the same time can be in any atmospheric or vacuum next boot.

5。 In the process of the normal work of rotary-vane vacuum pump, to pump after normal operation, by rotating the 3-way valve (pos. No. , turning slowly makes rotary-vane vacuum pump are connected into the port and is pumped container and isolation from the outside atmosphere.

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