SU988350A1 - Centrifugal machine for cleaning oil - Google Patents

Description

(54) CENTRIFUGE FOR CLEANING OIL

The invention relates to centrifugal purification of liquids, namely centrifuges for cleaning oil in internal combustion engines.

A known centrifuge for cleaning the oil, comprising a housing with a cap and a rotor with a hydro-jet drive 1 installed inside the hood.

However, in such centrifuges, the performance of the engine oil pump and the rotor working volume are not efficiently used, since up to 30% of the oil flowing into the centrifuge is diverted to the rotor drive and then drained into the engine crankcase.

Closest to the present invention, there is a centrifuge with a so-called internal hydraulic drive, in which the drive nozzles are connected in series with a duct draining purified oil, comprising a housing with an oil sump and a drainage duct, a rotor with upper and lower bearings, and a protective cap t2.

The disadvantage is lavish. The centrifuge is the disordered movement of the oil flowing from the inner-. rotor bones through the gaps in the bearings. Oil drainage (Consequently, it is considerably difficult, part of the oil falls into the annular space between the rotor and the cap, which leads to the braking of the rotor and, ultimately, to a decrease in the degree of oil purification. This Disadvantage is especially apparent when using centrifuges lubricants with high back pressure, when oil leaks through the bearings increase significantly.

The purpose of the invention is to provide the necessary degree of oil purification regardless of the magnitude of notyief of any leaks through the rotor bearings.

Claims (1)

The goal is achieved by the fact that in a centrifuge for cleaning oil, comprising a housing with an oil sump and a drainage channel, a rotor with upper and lower bearings and a protective cap, the oil sump is a body groove consisting of two adjacent sections, the first in the course of oil 25, the section has the shape of an open ring in plan, and the second is made straight, extending to the drainage channel, while the base of the rotor is provided with an annular protrusion arranged to form gaps between stenks1mi them and grooves, and the latter increases with a depth, direction of the drainage channel Fig. 1 shows the proposed centrifuge, longitudinal section; FIG. 2 is a section A-A in FIG. one ; The oil purification centrifuge includes a housing 1, a hollow axis 2 with a nozzle apparatus 3 and a diverter tube 4, a rotor 5, bearings 6 and 7 of the rotor, and a protective cap 8. In the housing 1 a channel 9 is provided for supplying oil, a drain 10 refined oil, oil sump 11 and drainage channel l2 for draining the drain. The oil collector is a groove made in the body of the body, consisting of two mating sections 13 and 14, the first of which 13 in the course of the oil has the shape of an open ring in the plan, and the second section 14 is made straight, extending to the drainage cord. The depth of the groove increases towards the drainage channel. It has the smallest depth at the beginning of the annular section 13, and most at the end of the rectilinear section 14, where the oil sump is connected to a drainage channel 12. The rotor base is provided with an annular protrusion 15. The internal diameter of the annular protrusion 15 is larger than the internal diameter of the oil section 13, and smaller than its outer diameter. Yes. In the walls of the hollow axis 2 there are holes 16 at the bottom for oil extraction and oil inlets 17 located at the top. The centrifuge works as follows. The oil flow under pressure enters the channel 9 and through the holes 16 enters the. nozzle apparatus 3. A through nozzle apparatus, the flow of oil causes rotation 5, into which oil is cleaned from impurities. The purified oil from the rotor through the holes 17, the tube 4 and the channel 10 passes into the main engine line. Since the oil is supplied to the centrifuge under pressure, part of the oil from the inner cavity of the rotor 5 is pumped through bearings 6 and 7. The annular protrusion 15 of the rotor, in conjunction with the oil collector, organizes the oil ejected from the bearings to form a compact flow and give it the necessary direction and speed. Thus, the oil passing through the lower bearing 6 generally almost does not fall into the space between the cap and the rotor, and the oil flowing out of the upper bearing 7 is quickly removed from this space without any effect on the rotational speed and rotor. centrifuges ensure its normal operation even with significant oil leaks through bearings. For example, in a known centrifuge designed to clean 19 liters of oil per 1 minute, the rotor braking occurs already when leaks are of the order, 1,2- 1.3 l / min, the centrifuge of the same capacity offered is capable of operating without a noticeable decrease in the rotor rotation frequency in case of leaks reaching 6-6.5 l / min. DETAILED DESCRIPTION OF THE INVENTION A centrifuge for cleaning oil, preferably in internal combustion engines, comprising a housing with an oil sump and a drainage channel, a rotor with upper and lower bearings, and a protective cap. so that, in order to provide the necessary degree of oil purification, regardless of the magnitude of the latter’s leakage through the rotor bearings, the oil collector is a groove made in the body body consisting of two adjacent sections, the first along the oil section has in plan the shape of an open the ring, and the second is made straight, extending to the drainage channel; the rotor base is provided with an annular protrusion located with the formation of gaps between it and the groove walls, and the depth of the latter increases In the direction of the drainage channel. Sources of information taken into account in the examination 1. USSR author's certificate number 540674, cl. B 04 B 1/06, 1975. 2, USSR Copyright Certificate No. 549175, cl. B 04 B 9/10, 1973. 13