Magnetic separator with variable magnetic field

FIELD: technological processes.

SUBSTANCE: invention is intended for removal of ferromagnetic metal particles from granulated loose materials. Magnetic separator comprises body in the form of rotary nonmagnetic drum, two magnetic systems arranged in it with permanent magnets arranged with the possibility to vary intensity of magnetic field developed by them. Drum is equipped with shaft and magnetic systems installed on both sides of shaft with the possibility to vary position relative to side inner surface of drum. Shaft is rigidly connected to body element in the form of frame, two sides of which are perpendicular, and two - parallel to shaft. At the latter there are two yokes installed, in every of which there is a magnetic system fixed, comprising a unit of permanent magnets. Yoke is arranged in the form of sector element with back wall parallel to side surface of drum, and two sides walls, which are perpendicular to axis of drum, each side wall of yoke is equipped with rectangular and round cuts. Guides of square shape are pulled via rectangular cuts with clearance and equipped with limiters in the form of two forks that serve for adjustment of yoke travel relative to side surface of drum and perpendicular to its axis, between back wall and guides of yoke there are cam shafts installed with two eccentrics, which interact with forks of guides. Each cam shaft is installed with the possibility of rotation in two holders, which are rigidly joined to walls of frame, parallel to shaft. Shaft of drum is installed with the possibility of rotation around its axis at the moment of magnetic systems adjustment for their setting into working position. Length of rectangular slot in yoke wall is designed so that angle of cam axis rotation makes 180°.

EFFECT: improved efficiency of separation.

2 cl, 5 dwg

 

The invention is intended for removal of ferromagnetic metal particles of granular bulk materials and can be widely used in mining, glass, food, textile, chemical and other industries.

Known magnetic separator, including specified with the possibility of rotation of the magnetic drum, tub, loading and unloading devices located inside the drum magnet system performed as mounted on the magnetic circuit of the permanent magnets of rectangular shape, however it has attached to the surface of the main magnets and is made in the form of rectangular prisms additional magnets, and the primary and secondary magnets made of the same magnetic polarity, and prisms additional magnets are made of less width than the main magnets, and installed in the radial direction with a gap between them

(RF patent for the invention №2319549, MKI VS 1/10; date of publ. 2008.03.20).

Known block of the magnetic system of the separator, containing packages of plates of permanent magnets positioned in the longitudinal direction, and each package contains a ferromagnetic base plate mounted on this basis, this package contains only the ferromagnetic base and one plate to the each plate in the block is a high-energy magnet, which is made on the basis of rare earth elements, the side of the plate facing the working area of the separator has multiple faces or rounding radius, and each plate is installed in the grooves formed by a ferromagnetic substrate and non-magnetic flanges which abut the side faces of the magnetic plate (patent RF GR №72644, MKI VS 1/00, date of publ. 2008.04.27).

Known magnetic separator analyzer comprising a magnetic system, made of permanent magnets, with the possibility of rotation with adjustable frequency, and the axis of rotation of the magnetic system is vertical and coincides with the axis of the cylinder, made of a nonmagnetic material with the ability to change its diameter by sliding the cut along its lateral surface (patent RF GR №72879, MKI VS 1/12, date of publ. 2008.05.10).

The closest technical solution of the present invention is a multi-magnetic separator with running field containing the separating chamber located vertically between two non-magnetic disks on which radially at an angle of 90° fixed at 4 magnets with the same magnetic polarity and magnetic moments of one of the disk facing toward the magnetic moments of the other disk with the ability to change the frequency of their rotation, with separa the EOS is equipped with multiple separation chambers, and the magnetic system is made of magnetic blocks placed on the arc of a circle discs on 360° with alternating magnetic polarity on the distance between the units is less than their width, and located on both sides of the separation chamber and placed in one line blocks have co-directed the location vectors of magnetic induction (RF patent for PM No. 72880, IPC VS 1/12, date of publ. 2008.05.10).

The disadvantages of the above technical solutions are low selectivity of separation due to inefficient use of magnetic blocks with alternating magnetic polarity, which allows rotation of the drum creates a magnetic field with non-uniform tension.

The technical result is improved efficiency of separation of materials through the use of magnetic systems with the possibility of moving to regulate the gap relative to the drum and their optimum orientation relative to the flow of the treated bulk material, which allows to achieve better performance devices and high selectivity of separation of the separated materials.

The technical result is achieved due to the fact that magnetic separator with a variable magnetic field includes a housing in the form of a rotating magnetic drum. The drum is provided with a shaft and a magnetic the systems with permanent magnets, located with the option to change the tension created their magnetic fields. Magnetic systems are installed on both sides of the shaft with the possibility of changing position relative to the lateral inner surface of the drum. The shaft is rigidly connected with the housing element in the form of a frame, two walls of which are perpendicular and parallel to the shaft, while the latter has two yoke. Each yoke is pinned magnetic system containing a block of permanent magnets. The yoke is made in the form of a sector of the element against the rear wall, parallel to the side surface of the drum, and two side walls perpendicular to the axis of the drum. Each side wall of the yoke provided with rectangular and circular cutouts. Through the rectangular cutouts skipped with a gap guides square shape, fitted with restrictors in the form of two forks, serving to regulate the stroke of the yoke relative to the lateral surface of the drum and perpendicular to its axis. Between the rear wall and the guide yoke parallel them installed camshafts with two eccentrics, which interact with cell guides. Each Cam shaft is rotatably in two holders, rigidly connected with the wall of the frame, parallel to the shaft. The shaft of the drum is mounted for rotation around its axis at time n the construction of magnetic systems for installation in the operating position, and the length of a rectangular groove in the yoke is designed so that the angle of rotation of the Cam axis was equal to 180°. Magnetic separator with a variable magnetic field is supplied by the feed tray and divider material flow.

Magnetic separator with a variable magnetic field is illustrated by figure 1, 2, 3, 4, and 5.

Figure 1 - magnetic separator with a variable magnetic field diagram of the General form in section;

figure 2 - magnetic separator with a variable magnetic field - shaft and frame with two jaw axes (one axis in the working, and the other outside positions);

figure 3 - magnetic separator with a variable magnetic field of the yoke;

figure 4 - magnetic separator with a variable magnetic field - the Cam axis. 5 is a General view of a magnetic separator with a variable magnetic field in the cross section shows the adjustment mechanism of the magnetic system).

According to figure 1, 2, 3, 4 and 5, a magnetic separator with a variable magnetic field includes a housing in the form of a rotating magnetic drum 1 in which the axis of rotation of the set shaft 2 and two magnetic system 3 located on both sides of him, the shaft 2 is rigidly connected with the housing element in the form of frame 4, two walls of which are perpendicular to the shaft 2, and two parallel, while the latter has two yoke 5, each of the pinned magnetic system 3, containing a block of permanent MAGN is tov, while the yoke 5 is made in the form of a sector of an element with back wall 6, parallel to the side surface of the drum, and two side walls 7, perpendicular to the axis of the drum 1. Each side wall 7 of the yoke 5 is provided with a rectangular 8 and round 9 cut through the rectangular cutouts skipped with a gap guides 10 square shape, fitted with restrictors in the form of two forks 11 serving to regulate the stroke of the yoke 5 on the side surface of the drum and perpendicular to its axis, between the rear wall 6 and the guide 10 of the yoke 5 in parallel they installed the Cam shaft 12 with two eccentrics 13, which communicate with the plugs 11 of the guides 10, in turn, each Cam shaft 12 is rotatably in two holders 14, rigidly connected with the wall of the frame, parallel the shaft, with the help of area 15.

In addition, magnetic separator with a variable magnetic field is supplied by the feed tray 16 and the flow divider material 17.

The working principle of magnetic separator with a variable magnetic field:

magnetic system 3 of each of the yoke 5 in the working position is set to the desired working gap Δ. The working gap is adjusted with the Allen key through the circular cutouts 9 of the side walls 7 of the yoke 5, combined with the same cut in the flange of the non-magnetic drum 1.

While in the system of magnetic systems 3 in the working position of the yoke 5 has the ability to move along the rectangular grooves 8 through the guide 10 has a square shape, interacts through its plug 11 with the respective Cam shafts 12 that allows to set the desired gap Δ between the surface of the magnetic system 3 and the working surface of a rotating magnetic drum. Then the source material to the feed tray 16 is applied evenly to the working portion of the rotary drum 1, inside of which is stationary during operation of the separator shaft 2 square guide 10 is fixed corresponding to the yoke 5, each with its magnetic system 3, creating a spin variable magnetic field, which increases separation efficiency and selectivity of the separation process. When magnetic impurities are attracted to the magnetic field generated by the respective magnetic system 3, to the surface of the magnetic drum 1 and rotates with it until you exit the zone of influence of the magnetic field, after which fall within the area of the divider 17. In turn, non-magnetic impurities under the action of gravity and inertia forces from the surface of the nonmagnetic drum fall into the area of nonmagnetic impurities.

The application proposed as the invention of a magnetic separator with a variable magnetic field helps to improve separation efficiency and selectivity of the separation process granular bulk materials.

1. Magnetic behold orator with a variable magnetic field, comprising a housing in the form of a rotating magnetic drum located therein two magnetic systems with permanent magnets located with the option to change the tension created their magnetic field, characterized in that the drum is provided with a shaft and magnetic systems that are installed on both sides of the shaft with the possibility of changing position relative to the lateral inner surface of the drum, the shaft is rigidly connected with the housing element in the form of a frame, two walls of which are perpendicular and parallel to the shaft, while the latter has two yokes, each of them pinned magnetic system containing a block of permanent magnets, the yoke is made in the form of a sector of the element against the rear wall, parallel to the side surface of the drum and two side walls perpendicular to the axis of the drum, each side wall of the yoke provided with rectangular and circular cutouts, through the rectangular cutouts skipped with a gap guides square shape, fitted with restrictors in the form of two forks, serving to regulate the stroke of the yoke relative to the lateral surface of the drum and perpendicular to its axis, between the rear wall and the guide yoke parallel them installed camshafts with two eccentrics, which interact with cell guides, in turn, each of the first Cam shaft is rotatably in two holders, rigidly connected with the wall of the frame, parallel to the shaft, the shaft of the drum, in turn, is mounted for rotation around its axis at the time of configuration of magnetic systems for installation in the operating position, and the length of a rectangular groove in the wall of the yoke is designed so that the angle of rotation of the Cam axis was equal to 180°.

2. Magnetic separator with a variable magnetic field according to claim 1, characterized in that provided in-feed tray and divider material flow.



 

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