SU957968A1 - Centrifugal apparatus for cleaning oil in i.c. engine - Google Patents

Description

The invention relates to the purification of liquids and can be used in the lubrication systems of internal combustion engines.

A prior art centrifuge for cleaning oil in internal painting engines containing mounted on an axle. a rotor comprising a column with an end thrust surface and a cap, and a thrust bearing mounted on the axle shoulder in its upper part, containing two rings and rolling bodies between them. In this centrifuge, the bearing is designed to keep the rotor from moving upwards only in the operating mode, and to keep the rotor during the overrun period, another thrust bearing is installed in the lower part of the p.j axis,

A disadvantage of the known centrifuge is that the second bearing, which does not absorb the forces in the operating mode, creates resistance to the rotation of the rotor and, thus, impairs the cleaning of oil.

The aim of the invention is to increase the degree of oil purification by reducing the rotational resistance of the rotor.

The goal is achieved by the fact that in a centrifuge for cleaning oil in internal combustion engines containing an axle-mounted rotor, including; a column with an end thrust surface and, | an olpak, and a thrust bearing mounted on a shoulder in its upper part, containing two rings and between them rolling wheels, a cap has an annular protrusion, the inner surface of which serves as a support for the bearing during the overrun of the rotor, on the axis above the bearing there is a stop washer,

15 serving as a bearing for the bearing during the operating mode of the rotor: in this case the distance nmr between the inner surface of the annular ledge of the cap and the end thrust surface

The 20 columns, as well as the distance between the bottom surface of the thrust washer and the zaplechik axis, exceed the axial length of the bearing.

25

FIG. 1 shows a centrifuge, a longitudinal section; in fig. 2 - node. bearing in two positions (conditional alignment): on the left - during the overrun period, on the right - during the operating mode (increased).

Claims (1)

30 The centrifuge includes a housing 1, having a 1st channel 2 supplying oil from an engine oil pump (not shown). The housing 1 has an axle 3 fixed to the floor, which has a channel 4 with outlets 5. In channel 4 a tube b is installed that separates a channel to the cavity 7 for supplying the contaminated oil and the cavity 8 for removing the purified oil. Axis 3 has a rotor 9 supported on radial slide bearings 10 and 11. The diameter of the sub-holder 11 is larger than the diameter of the bearing 10. The rotor 9 includes a column 12 and a cap 13. The column 12 has a face thrust surface 14 of FIG. 2). On the shoulder 15-axis 3 (Fig. 2), a thrust bearing 16 is installed in its upper part, containing two rings 17 and 18 and rolling bodies 19 located between them. On the rotor 9 an insert 20 is installed, having openings 21 and a mesh filter 22. At the bottom of the rotor jets 23 are located jet drive. Axis 3 has holes 24 for the passage of oil. Column 12 has lubrication holes 25. With the cap 13 there is a rotor cover 26 connected. The cap 13 has an annular protrusion 27, the inner surface 28 of which serves as a support for the bearing 16 during the overrun of the rotor (Fig. 2, left). An axle washer 29 is installed on the axis 3 above the bearing 16, which serves as a support for the bearing during the operating mode of operation. The distance A (between the inner surface 28 of the annular protrusion 27 of the cap 13 and the end thrust surface 14 of the rotor column 12, and the distance A2 of the bottom surface of the thrust washer 29 and the shoulder 15 of the axis exceed the axial length B of the bearing 16. Outside the centrifuge is closed by a casing 30. The centrifuge After starting the engine, the oil from the small pump flows through a channel into cavity 7 and from there through holes 5 under the insert 20. From here, part of the oil goes through the mesh filter 22 to the jets 23, and the other part passes through from Dust 2 in the cavity under the rotor cover 26. Due to the fact that the bearings 10 and 11 have a different diameter, the oil raises the rotor (fig. on the right) so that the surface 14 of the column 12 and the upper ring 17 of the bearing 16 abut against the lower ring 18 of the bearing 16. rests on the washer 29. The oil passing through the nozzles 23 rotates the rotor 9, and the liquid in the cavity under the cover 26 is subjected to centrifugal cleaning. The purified oil exits through the holes 25 and 24. into the cavity 8 of the oil outlet. After the engine stops, the oil pressure drops and the rotor continues to rotate under the action of inertial forces and drops downward (Fig. 2, left), so that the lower ring 18 of the bearing 16 is supported on the shoulder 15 of the axis 3 and the surface 28 of the annular protrusion 27 of the rotor cap 13 rests on the upper ring 17 of the bearing. Etchm provides free run-down of the rotor for a long time. The use of one thrust bearing located at the top of the axis to support the centrifuge rotor both during the operating mode and during the rotor run-down makes it possible, by reducing the resistance to rotation, to increase the rotational speed of the rotor by about 10% at the same pressure. of the supplied oil, that Ss1mym, rises, a stub of an oil purification. In addition, the use of a single thrust bearing instead of two reduces the cost of a centrifuge. Claims of invention Inventory for cleaning oil in internal combustion engines, comprising an axially mounted rotor, including a column with an end thrust surface and a cap, and an axial bearing mounted on the upper arm axle, containing two rings and spaced bodies between them, which By the fact that, in order to increase the degree of cleaning by reducing the resistance to rotation of the rotor, the cap has an annular protrusion, the inner surface of which serves as a bearing for the bearing during the overrun of the rotor, on the axis A thrust washer is installed above the bearing, supporting the bearing during the operating mode of the rotor, while the distance between the inner surface of the annular ledge of the cap and the end thrust surface of the column, and the distance between the lower surface of the thrust washer and the axle bearing, exceed the axial length of the bearing. Sources of information taken into account during the examination 1. Automobile ZIL-130 and its modifications. Manual . M., Mechanical Engineering, 1979, p. 42, fig. 18.