SU1614856A1 - Electromagnetic vibrator - Google Patents

Abstract

This invention relates to a vibration technique and can be used as an effective driver of a vibration machine. The purpose of the invention is to increase efficiency and reduce energy consumption. In an electromagnetic vibrator, the gaps between the magnetic cores 1 and 2 and the core 5 are filled with magnetic fluid 7 bounded by rubber corrugated sleeves 8. When the core 5 moves, the magnetic fluid 7 from the gaps in one side of the core passes through its channels 12 to the gaps in the other side. 1 il.

Description

The invention relates to vibration technology and can be used as an effective causative agent of vibration machines.

The purpose of the invention is to increase efficiency and reduce energy consumption is achieved by reducing magnetic gaps to the required limit, determined by the amplitude of mechanical vibrations.

The drawing shows a diagram of an electromagnetic vibrator, a cross section and a diagram of its connection.

The vibrator consists of magnetic circuits 1 and 2, on which windings 3 | and 4 excitations, the anchor 5, located in the I air gap of the magnetic circuits 1 and 2 and mounted on the springs 6, the magnetic fluid 7 filling the air gaps between the magnetic circuits 1 and 2 and the armature 5 ί and bounded by corrugated couplings 8 of elastic material, such as rubber, and diodes 9 and 10 connected between the field windings 3 and 4 and the source 11 (AC power. In the body of the armature 5 (communicating channels 12 are made.

The vibrator works as follows.

Diodes 9 and 10 provide alternating • current transmission through excitation windings 3 and 4, that is, in one half-period • of alternating voltage of source 11, current j passes, for example, through excitation winding 3, and in another half-cycle through winding 4 excitation, causing alternately in the magnetic circuit 1, then in the magnetic circuit 2 a magnetic field that creates an electromagnetic force that attracts the armature 5 up and down. Under the action of j of this force, the armature 5, suspended on springs 6, oscillates. In this case, when the armature 5 moves upward, the magnetic fluid 7 is squeezed out of the upper gaps and passes through the channels 12 in the armature 5 to the lower gaps. With the reverse movement of the armature 5 downward, the magnetic fluid 7 performs the reverse movement, passing from the lower to the upper gaps. Therefore, the length of the gaps is determined only by the amplitude of the oscillations.

Rubber couplings 8 containing magnetic fluid 7 are glued with their ends 10 to the ends of the poles of the magnetic circuits 1 and 2 and the armature 5.

Thus, in the vibrator, the clearance is reduced to the necessary limit, determined by the amplitude of the mechanical ^ 5 vibrations.

Claims (1)

Claim An electromagnetic vibrator comprising a first magnetic circuit with an excitation winding, an armature mounted on elastic elements and placed with a gap relative to the poles of the first magnetic circuit, and elements of elastic material placed between the armature and the poles of the first magnetic circuit, characterized in that, in order to increase efficiency and reducing energy consumption, an additional magnetic circuit with an additional field winding is introduced into it, identical to the first one and installed 3θ symmetrically with the positive side of the anchor, and additional elements of elastic material placed between the anchor and the poles of the additional magnetic circuit, all elements are made in the form of corrugated couplings, the internal cavities of which are filled with magnetic fluid, and the channels are made in the anchor, pairwise connecting the internal cavities of the opposite couplings.