SU1423163A1 - Damping device for scroll-discharge centrifuge - Google Patents

Abstract

The invention relates to a d-amping device of a screw centrifuge and can be used in a screw centrifuge to eliminate the self-oscillation of the screw. The aim of the invention is to increase reliability. The damping device comprises a housing 1, an axis 2 connected 3 to an output shaft 4 of a gearbox 5. In case 1 a disk 6 is mounted on axis 2. A housing 1 is rigidly connected to the gear case 5, peripherally attached to it, glasses 7, in which are placed plungers 8 pivotally connected to the disk 6. Plungers 8 have central channels 9 for communicating the cavities of the cups 7 with the cavity of the housing 1. 3 il.

Description

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The invention relates to machine building and can be used in screw centrifuges to eliminate self-oscillations of the screw. : The purpose of the invention is the reliability,

i FIG. Figure 1 shows a damper-centrifugal centrifuge device, |, common in the ID; in fig. 2 - damper, longitudinal section; in fig. 3 section aa in FIG. 2

The damping device of the screw centrifuge includes a housing 1, an axis 2 connected by a coupling 3 to the output shaft A of a gearbox 5, and mounted in the housing 1 on an axis 2 a disk 6.

The housing 1 of the device is rigidly connected to the housing of the gearbox 5; glasses 7 are attached to the periphery in which plungers 8 are hinged and hingedly connected to the disk 6. Plungers 8 have central channels 9 to communicate the cavities of the glasses 7 to the cavity of housing 1,

The connection between the plungers 8 and the disk 6 is provided by the rods 10 and the hinges 11.

In the side wall 12 of the housing 1, radial slots 13 are made, and the hub 1A of the disk 6 has ribs 15 I for placement in the slots 13. 13. The device body 1 has an I-blade. into its internal cavity I, an annular shoulder 16 with openings 17 for the flow of fluid from the discharge cavity 1B formed by an annular j flange 16 and the side wall 19 of the housing 1.

The end of the axis (torsion shaft) 2 with a latch 20 is mounted on the bracket 21, mounted on the frame 22.

The device works as follows.

When starting the centrifuge, the fluid in the casing 1 of the damping device, under the influence of a centrifugal floor, flows smoothly through the holes 17 of the collar 16 from the discharge cavity 18 into the internal cavity of the housing 1, filling the cavity of the cups 7 and forming a solid liquid ring above them.

When in a running centrifuge. sediment capacity tsstkga-s em values at which the self-oscillating mode of the auger begins, cross the output shaft 4 of the gearbox 5 to the external element - axis (tor 1423163, 2

Zion) 2, automatically begins to trickle the drive 6 connected with it through the bearings and the disk 6 rotating at the speed of the gearbox housing 5 together with the connecting rods 10 and the plungers 8,

Axis 2 oscillations and disk oscillations

6, having. - largest amplitudes, efficiently and softly quenched in glasses

7, filling with incompressible medium. (in oil).

When the disk 6 is vibrated and leads to the movement of the plunger 8 in the direction towards the center (towards the axis of rotation), the damping is ensured by the fact that the movement of the plunger 8 from the bottom of the glass 7 causes the volume to expand, and the resulting vacuum is smoothly eliminated into this volume located 20 s in the centrifugal field of the fluid through the central channel. 9 in the bottom of the plunger 8.

When the disk 6 oscillates, leading to the movement of the plunger 8 in the direction

25 from the center (from the axis of rotation) to the bottom of the glass 7, the liquid is squeezed out through the centrifugal channel 9 of the plunger 8 in the opposite direction.

The loads in the damping device are counted by the simultaneous action of the vibrations of the disk 6 on the oppositely located plungers 8, which simultaneously move in the diametrical direction towards each other or from each other.

The proposed device allows, if necessary and depending on the properties of the suspensions, to adjust the rigidity of the axis 2, changing its length by moving along the axis of the clamp 20, which makes it possible to reveal the maximum oscillations of the system, which are then extinguished.

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In addition, the device in operation increases the reliability of automatic and smooth damping of vibrations.

Claims (1)

50 claims A screw centrifuge damping device comprising a housing, an axis connected by a coupling to the output shaft of the reducer, and a disk mounted in an axle housing, characterized in that, in order to increase reliability, the housing of the device is rigidly connected to the reducer housing. In addition, the device in operation increases the reliability of automatic and smooth damping of vibrations. Invention Formula A screw centrifuge damping device comprising a housing, an axis connected by a coupling to the output shaft of the reducer, and a disk mounted in an axle housing, characterized in that, in order to increase reliability, the housing of the device is rigidly connected to the reducer housing. 31423163 on the periphery to. attached plungers have central channels kanas in which plungers are hingedly connected to the disk, to communicate the cavities of the cups with the body cavity. 7 / i / p / pu9.3