SU383882A1 - ROTARY VACUUM PUMP COMPRESSOR - Google Patents

Description

one

The invention relates to the field of compressor engineering and concerns the improvement of rotor machines.

Famous rotary compressors containing a casing and rotors installed in it with rolling bearings, which are fitted with seals and combined with synchronizing gears operating in an oil bath.

The goal of the invention is to reduce oil leaks into the working cavity of the compressor.

The goal is achieved by the fact that axial and radial holes are made in the rotors, which connects the seals with the atmosphere.

FIG. 1 shows a general view of the pump, a section; pas figs. 2 is a side view, combined with a cross-section of the pump.

As shown in FIG. 1, a rotary vacuum pump has a body / with end caps and 2 and 3 and installed on it on rolling bearings 4 rotors 5 and 6, coupled with synchronous CTeipeH 7 HAMMERS 7. The gears are placed in the oil shaft 8 provided in cover 9 In the rotors 5 and 6, equipped with seals W and / L, axial 12. And 13 radial holes are made, connecting the zones of seals 10 and to the atmosphere.

FIG. 2 shows the suction 14 and the injection 15 nozzles, as well as the working cavity 16 from the pressure side.

The operation of the vacuum pump through the seals W and 11 and the end gaps flj n Og occurs air is sucked in with oil particles in the bearings 4 and the cavity. But since the resistance in the gaps O and d2 is much greater than in holes 12 and 13, the air drawn from the particle oil does not enter the working cavity, but is removed through the axial holes 12 to the drainage system.

Subject invention

A rotary vacuum pump-compressor, comprising a housing and rotors mounted on rolling bearings, fitted with seals and articulated with synchronizing bristles, working in an oil bath, characterized in that, in order to reduce oil leaks into the working cavity, the rotors are made axial and radial holes communicating seals with the atmosphere.