SU1275146A1 - Magnetic fluid thrust bearing - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to ferrofluid-lubricated magnetic fluid bearings. The purpose of the invention is to increase reliability and durability by using the energy of a magnetic field to form a reliable lubricating layer and to move ferro-lubricant. The magneto-liquid thrust bearing contains a non-magnetic body 1 with magnetic cores 2 and 3 placed in it, creating a non-uniform magnetic-temperature field in the frictional contact zone, which causes ferro-lubricant 13 to circulate through the through radial 7 and 8 channels and axial channels 9 in the sub-tube 6 of non-magnetic material. Ferro-lubricant 13, which fills the working volume of the bearing and is in a non-uniform magnetic field, seals the bearing against non-magnetic abrasive particles, corrosive vapors and liquids. The source of the magnetic field is a pin of an annular permanent magnet 11, fixed (Lennoy on a rotating carrier 12. 3 Il. N5 O1 N (O)

Description

FIELD OF THE INVENTION The invention relates to mechanical engineering, in particular, to devices of magnetic-fluid unary PADDERS, lubricated with ferromagnetic lubricant.

The purpose of the invention is to increase the reliability and durability of the subdivision by improving the circulation of ferromagnetic lubricant.

FIG. 1 is a magnetic liquid bearing, cut; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. 2

The magneto-liquid thrust undershirt consists of a non-magnetic body with concentrically fixed magnetic conductors 2 and 3, having cylindrical 4 and conical 5 sections, an annular bolster 6 of non-magnetic material rigidly installed in the housing 1 with a small diametrical gap between the conical sections 5. magnitoprovods 2 and 3, the height of which is greater than the height of the conically shaped sections 5, and also has a number of radial channels 7 and 8 on the working and supporting surfaces, connected by axial channel 9 and 9, they around the circumference of the ring bout 6.

The permanent magnet of the fifth 10 is made annular with a thin annular plate 1 I fixed on it from a non-durable material and is associated with the shaft 12 from a mute feed material. The working volume of the undershirt is filled with ferrous grease 13, placed in diametrical gaps between the magnetic conductors 2 and 3, the fifth K), and the annular node of the biv channels 7–9.

The device works as follows.

The load Q and rotation with frequency h are transmitted to the bearing through the shaft 12. The magnetic circuit is created by a source of magnetic field, ring magnet 10, magnetic cores 2 and 3 m with ferrous grease 13, which fills the displacement of the bearing. In the area of the frictional contact of a thin ring plastii-, i 1 with a 1: 1 suppressor b and channels 7–9 s; -, a non-uniform magnetic field with gradient is given. directing to the center of fricción Hioio contact due to the conical surfaces of 5 ma CH1 of the conduits 2 and 3. When you turn the tension of 10 on, the heat energy in the zone of the frictional contact of the annular plate 1I with the ring binder occurs. Elemental o6ijeM ferro-lubricant V, located in the frictional contact zone, heats up, magnetizes it, and due to the gradient magnetic forces, it is pushed out through channel 7 in the floor, which is formed by the diametral gap between the flange b and the conical sections 5 of magnetowires 2 and 3. At the bottom of the subdivision section 11 and in the channel SAl, ox:

{for example, due to heat exchange with the environment through the shell wall), the magnetization of the elementary volume of AV increases, and oi; enters the top and gets through the through channel 7 into the friction zone, and the heated portions of the elementary volumes of ferros. lubricant are pushed out of the friction zone, and, falling into the channel 7, rush to the bottom part of the bearing. Ilpoizecc thermomagnetic convection is repeated.

Ferro-lubricant, (akho.d shas with a diametrical gap between the fifth of the ring permanent magnet and the cylindrical surfaces of the magnetic cores in a uniform magnetic field, the magnetic resistance of the gap to compresses the friction unit from falling into the abrasive non-magnetic working volume of the magnet particles, corrosive vapors and droplets of liquids. This increases the reliability and durability of the magnetic-liquid thrust bearing, and the magnetic field energy is used rationally. The bearing can work any position in space, since ferrosmazka used simultaneously as a lubricant and as a ug1lotne | 1ie bonds trech.i 1a.

Claims (1)

Invention Formula .1aGN1GGOZHIDKOSNY persistent UND.; TSIPPP, containing a dot with a constant 1) 1.m magnet, a suppressor and a magnetic conductor, mounted in a cortex of non-magnetic material, as well as a ferromagnetic lubricant placed in cavities between the bottom and the support, characterized in that. in order to increase reliability and durability by improving the circulation of ferromagnetic lubricant, it is equipped with a second magnetic pipe that is located with a gap and concentrates on the internal surface of the cylindrical and conical sections, the first 1H magnetic field is on the outside surfaces with cylindrical and conical sections, corresponding to the segment of the second magpateline, permanent magnet not completely circular with an annular plate attached to its working surface tina from non-magnetic material., between cylinders ... tricheskimi sections of both magnetic cores, the specified permanent magnet of the magnet is en, the tee is made annular, covering the first magnetic circuit, from non-magnetic 11O1o.material, and is placed between the conical sections of both metal andconductors, On the working and supporting surfaces of the subframe, uniformly spaced radial channels are formed, communicating with each other, with the height of the subframe being greater than the height of the conical sections of both ma | - pipeline. // - // z FIG. 2 6-6 CPUB.J