Magnetic device for extracting magnetic impurities

Abstract

This utility model relates to the working elements of process devices (separators, sifters, etc.) designed to extract magnetic impurities from various types of bulk materials: grain, powder, granulated, flaked, lumpy, etc. The technical result is a reduction in the labor intensity of magnet maintenance related to the removal of metallic impurities. The proposed magnetic device consists of two paramagnetic plates, between which magnets are positioned, and a spacer capable of securing the magnets, with the paramagnetic plates interconnected.

Description

[0001] The utility model relates to the working parts of technological devices (separators, sifters, etc.) designed to extract magnetic impurities from bulk materials of various types: grain, powder, granulated, flaky, lumpy, etc.

[0002] A hammer crusher known from the prior art is patent No. 172912. This hammer crusher comprises a separator cover designed to remove magnetic impurities from bulk materials. A box containing a magnet and an inlet pipe is mounted on the outer surface of the cover. The magnet is secured to the cover opposite the inlet pipe opening; below the pipe, the box contains a compartment containing a gate valve. The magnet in this device is a ring made of magnetic material, which is attached to the cover by magnetic attraction. The magnet is designed to remove metallic impurities from the air and product flow. The magnet requires periodic maintenance and cleaning. A disadvantage of this device is the high labor intensity of cleaning the magnet from metallic impurities.During crusher operation, metallic impurities accumulate not only on the outer vertical surface of the magnet, but also on the outer end surface and in the center of the magnet's ring section. The end and center sections of the magnet are particularly difficult to clean, especially if maintenance is performed without removing the magnet through the open gate valve. Removing the magnet from its mounting location requires considerable labor.

[0003] The following magnetic separators and cleaners are known from the prior art: Sifter SMP-150, Sifter SMP-200, Sifter SMP-250, Sifter SMP-300, Sifter SMP-400, manufactured by Doza-Agro LLC. Link to the manufacturer's website: https: / / dozaagro.ru / oborudovanie / separatory-ochistiteli / magnitnye / . These magnetic separators and cleaners are designed to extract metallic impurities from bulk materials. They are used in the feed industry, agriculture, and other industries that require the purification of bulk mixtures from metallic inclusions. All models have a similar technical design and contain several magnetic rings. During operation, metallic impurities accumulate not only on the outer vertical surface of the magnetic rings, but also on the outer end surface and in the middle of the annular part of the magnet. Cleaning magnets also requires a significant amount of labor.

[0004] Thus, the closest analogue is a ring-shaped magnet, most often used in devices designed to extract metallic impurities from bulk materials.

[0005] The technical result is a reduction in the labor intensity of maintenance of the magnet in terms of removing metallic impurities from it.

[0006] The technical result is achieved by the fact that a magnetic device is proposed, made in the form of two plates of paramagnetic material, between which magnets are located and a gasket made with the ability to fix the magnets, while the plates of paramagnetic material are connected to each other.

[0007] The claimed utility model is explained by the following graphic material.

[0008] Fig. 1 - image of magnetic device.

[0009] Fig. 2 - view of the magnetic device in the separation of its constituent elements.

[0010] Magnetic device 1 comprises two plates 2 made of paramagnetic material. Between the plates 2 is a spacer 3, in the openings of which magnets 4 are located. The plates 2 are connected to each other by any available and known connection (rivet, bolt, screw, etc.). From the standpoint of achieving the technical result, the important thing is that the plates are fastened together, rather than the specific connection method. As an example, the figures show a riveted connection 5.

[0011] The arrangement of several magnets 4 between plates 2 creates a powerful and uniform magnetic field in the material flow zone. There may be two or more magnets. For example, the figures show four magnets 4. Neodymium magnets are predominantly used, as they have a virtually unlimited service life: they lose no more than 1% of their power over 100 years. Plates 2 are made of a paramagnetic material, primarily aluminum. This paramagnetic material does not distort the magnetic field lines generated by the magnets, does not "shield" magnets 4, and does not reduce their efficiency. It allows the magnetic field to propagate freely within the separation zone. Aluminum is the preferred choice for the plates because it is resistant to moisture, dust, and organic materials (grain, wood dust). Aluminum plates are also easy to process, including drilling to connect the plates 2 together.

[0012] Gasket 3 is made of an elastic material (rubber, silicone, polyurethane, etc.). In this design, gasket 3 serves to secure magnets 4, specifically, it holds magnets 4 in their designated positions, prevents them from shifting due to vibrations and impacts, and ensures their connection with each other.

[0013] The proposed device operates as follows. During operation, metallic impurities accumulate on magnetic device 1, after which it must be cleaned. The design of the proposed device significantly simplifies its maintenance. Unlike ring magnet solutions, where impurities accumulate in hard-to-reach areas (on the ends, inside the ring), the proposed device requires cleaning only on the outer plate. Plate 2 has a flat, defined surface that is significantly easier to handle: all accumulated metal particles can be quickly and effectively removed using conventional methods (e.g., a brush or by hand). The end surfaces of the magnetic device are non-magnetic, so impurities do not accumulate on them. Furthermore, the magnetic device itself is easier to remove without applying significant force to overcome the magnetic field's attractive force, further simplifying maintenance.This is due to the fact that permanent magnets 4 are located between plates 2 made of paramagnetic material, as a result of which the magnetization force is lower compared to the closest analogue.

[0014] Clearly, compared to its closest analogue, the proposed magnetic device reduces the labor intensity of maintenance related to removing metallic impurities. The proposed magnetic device also ensures versatility in various types of separators and sifters.

Claims

A magnetic device for extracting magnetic impurities from bulk materials, characterized in that it is made in the form of two plates of paramagnetic material, between which a gasket is located, in the holes of which magnets are placed, while the plates of paramagnetic material are connected to each other.

Images