SU961669A1 - Apparatus for cleaning surface from metallic particles - Google Patents

Description

(54) DEVICE FOR CLEANING SURFACES FROM METAL PARTICLES

one

The invention relates to a cleaning technique, in particular to devices for cleaning surfaces, for example, from rust, scale, etc. before applying paintwork.

A device for cleaning surfaces from metal particles is known, which contains a plate of magnetically non-conductive material and a permanent magnet placed on the plate with the possibility of removal from it 1.

This device has no means of mechanical action on the surface and therefore does not provide high-quality cleaning of surfaces, especially those that have metal particles rigidly attached to them.

The purpose of the invention is to expand the functionality and improve the quality of cleaning.

This goal is achieved by the fact that the device for cleaning surfaces from metal particles, containing a plate of magnetically non-conductive material and a permanent magnet placed on the plate with the possibility of removal from it, additionally has a permanent magnet mounted on the plate and placed on the magnets billet mounted

 can be rotated relative to the plate by 180 °, with the magnets arranged on the plate sequentially and have oppositely directed fields, and on the side of the plate facing the surface to be cleaned are bundles of wire elements made of magnetic conductive material.

In addition, the product of the density of the beam of wire elements by the cross-sectional area of each element is inversely proportional to the magnetic permeability coefficient of the material of the wire elements, and the permanent magnets and measles are placed in a sheath of vibration-absorbing material.

20 In FIG. 1 depicts the proposed

device in working position, general view;

in fig. 2 - the same in the off position.

Surface cleaning device

Claims (3)

from metal particles contains a plate 1 of a magnetically non-conductive material and a permanent magnet 2 placed on the plate 1 with the possibility of removal from it. The device additionally has a permanent magnet 3 mounted on the plate 1 and placed on the magnets 2 and 3 lamellar bark 4 mounted rotatably relative to the plate through 180 °, while the magnets 2 and 3 are arranged on the plate 1 in series and have oppositely directed fields, and On the side of the plate 1 facing the surface to be cleaned, there are bunches 5 of wire elements made of magnetic material of one material. The possibility of rotation of the core 4 is ensured by the presence of a joint 6. The device has a handle 7. For ease of use, the joint 6 is equipped with a spring, which presses the magnets 2 and 3 to the plate 1, and to protect the device from impacts, permanent magnets 2 and 3 and measles 4 placed in a shell of vibration-absorbing material (spring and shell not shown). The device operates as follows. Using the handle 7, the device is pressed against the surface to be cleaned and reciprocating movement is reported. Scratch off the surface being cleaned by scratching rust and scale, from which polydisperse particles are obtained. Then, under the action of a magnetic field, these particles fall onto plate 1 and are deposited on beams 5 of wire elements. To prevent leakage of magnetic flux in the air gap between the surface of the plate 1 facing the surface to be cleaned and the surface to be cleaned, the magnetic resistance of the beam 5 is a whole order of magnitude smaller than the magnetic resistance of this gap. The value of the average density of the beam of wire elements and the cross section of each element depends on the selected wire material at the following ratio: N-S :, where N is the average distribution density of the wire elements on the plate cm / cm; S is the cross section of a single wire element, ° t is a dimensionless quantity equal to 10; W is the magnetic permeability coefficient of the material of the wire elements. For a beam with carbon steel wire elements, the product of average density (N) and cross section (S) should not be less than 0.1. Reducing the density of the beam to 20 ps / cm also increases the holding force of rust particles in the beam, as it leads to increased field heterogeneity of the wire elements. After the beams 5 are filled with corrosion products, the device is retracted to an established place (for example, in a bucket), then set the measles 4 by turning around the hinge 6 to the handle 7, which leads to the removal of the magnetic field from the beams 5 (Fig. 2) and discard device from the collected material. If the beam is blocked, the field in magnets 2 and 3 is reversed (removal of residual magnetism). The latter is accomplished by reciprocal permutation of the permanent magnets 2 and 3, or by inverting both magnets in their positions. After the discharge of corrosion products, measles 4 with magnets 2 and 3 is returned to its original position (Fig. 1). The proposed device allows high-quality cleaning of surfaces from rust and scale, since it provides both a mechanical effect on the surface and the collection of cleaning products. Claim 1. Device for cleaning surfaces from metal particles, containing a plate of magnetically non-conductive material and a permanent magnet placed on the plate with the possibility of removal from it, characterized in that, in order to extend the functionality and improve the quality of cleaning, it additionally has a permanent magnet mounted on the plate and placed on the magnets, lamellar measles mounted rotatably with respect to the plate through 180 °, while the magnets are located on the plates They are consecutively and have oppositely directed fields, and on the side of the plate facing the surface to be cleaned there are bunches of wire elements made of magnetic conductive material. 2. A device according to claim 1, characterized in that the product of the density of the bundle of wire elements and the cross-sectional area of each element is inversely proportional to the magnetic permeability coefficient of the material of the wire elements. 3. The device according to PP. 1 and 2, characterized in that the permanent magnets and measles are housed in a sheath of vibration-absorbing material. Sources of information taken into account in the examination 1. US Patent No. 2426795, cl. 209-215, 1974. -tx kz