阅读说明：本技术 一种用于涡流分选机的磁辊 (Magnetic roller for eddy current separator ) 是由 王军 邵光景 徐学臣 刘盟宁 王玉珠 于 2020-07-27 设计创作，主要内容包括：本发明提供一种用于涡流分选机的磁辊,其从内到外依次包括轴芯、导磁筒和外套筒；导磁筒套装在磁芯上,轴芯支撑着导磁筒,外套筒套装在导磁筒上。导磁筒的外弧面上排布若干磁块,由外套筒进行封装。使用磁辊封板焊接在导磁筒的两端头,所述外套筒与磁块之间、磁辊封板与导磁筒之间的所有间隙内均灌注绝缘胶。本发明避免了校紧给磁块带来的可能性伤害；磁块上浇筑绝缘胶,可隔离潮湿空气,避免其侵蚀磁块,延长磁块寿命。(The invention provides a magnetic roller for an eddy current separator, which sequentially comprises a shaft core, a magnetic conduction cylinder and an outer sleeve from inside to outside; the magnetic conducting cylinder is sleeved on the magnetic core, the shaft core supports the magnetic conducting cylinder, and the outer sleeve is sleeved on the magnetic conducting cylinder. The outer cambered surface of the magnetic conduction cylinder is provided with a plurality of magnetic blocks which are packaged by an outer sleeve. And magnetic roller seal plates are welded at two ends of the magnetic conduction cylinder, and insulating glue is filled in all gaps between the outer sleeve and the magnetic block and between the magnetic roller seal plates and the magnetic conduction cylinder. The invention avoids the possibility of damage to the magnetic block caused by the fastening; the insulating glue is poured on the magnetic blocks, so that moist air can be isolated, the magnetic blocks are prevented from being corroded, and the service life of the magnetic blocks is prolonged.)

1. A magnetic roller for an eddy current separator is characterized by sequentially comprising a shaft core, a magnetic conduction cylinder and an outer sleeve from inside to outside; the magnetic conducting cylinder is sleeved on the magnetic core, the shaft core supports the magnetic conducting cylinder, and the outer sleeve is sleeved on the magnetic conducting cylinder.

2. The magnetic roller for an eddy current separator as claimed in claim 1, wherein the magnetic blocks are arranged on the outer arc surface of the magnetic conducting cylinder and encapsulated by the outer sleeve.

3. The magnetic roller for the eddy current separator as claimed in claim 2, wherein the magnetic roller sealing plates (4) are welded at two ends of the magnetic conducting cylinder (1), and insulating glue (6) is poured into all gaps between the outer sleeve (3) and the magnetic block (2) and between the magnetic roller sealing plate (4) and the magnetic conducting cylinder (1); the magnetic block is a non-porous magnetic block.

4. A magnetic roller for a vortex separator according to claim 3, characterized in that the openings at both ends of the outer sleeve (3) are sealed by annular magnetic roller closure plates (4); the inner side edge of the magnetic roller sealing plate (4) is fixed on the outer edge of the magnetic conduction cylinder (1), and the outer side edge of the magnetic roller sealing plate (4) is fixed on the circumference of the outer sleeve (3).

5. A magnetic roller for a vortex separator according to claim 4, characterized in that the magnetic roller closing plate (4) at one end is provided with a pouring opening (7) for the insulating glue (6), and the magnetic roller closing plate (4) at the other end is provided with an exhaust opening (8); the position of the exhaust port (8) is higher than the pouring port (7).

6. A magnetic roller for a vortex separator according to any one of claims 3 to 5, characterized in that the corners of the magnetic blocks (2) are chamfered.

7. A magnetic roller for an eddy current separator as claimed in any one of claims 1 to 5, characterized in that the inner arc surface of the outer sleeve (3) is provided with a plurality of guide grooves uniformly along the axial direction, and the magnetic blocks (2) are mounted along each guide groove on the arc surface between the outer sleeve (3) and the magnetic conductive cylinder (1).

8. A magnetic roller for an eddy current separator as claimed in any one of claims 1 to 5, characterized in that the outer arc surface of the magnetic conducting cylinder (1) is provided with a plurality of guide grooves uniformly along the axial direction, and the magnetic blocks (2) are mounted along each guide groove on the arc surface between the outer sleeve (3) and the magnetic conducting cylinder (1).

9. A magnetic roller for an eddy current separator according to any one of claims 1 to 5, wherein the outer sleeve (3) is connected with the magnetic roller sealing plate (4), the magnetic roller sealing plate (4) is connected with the magnetic cylinder (1), and the magnetic cylinder (1) is connected with the shaft core (5) by welding.

Technical Field

The invention belongs to the technical field of eddy current sorting, and particularly relates to a magnetic roller for an eddy current sorting machine.

Background

The eddy current magnetic field generation principle is mainly based on faraday's law of electromagnetic induction and maxwell-ampere's law, that is, a changing magnetic field generates a changing electric field or a changing electric field generates a changing magnetic field. When the permanent magnet rotates at a high speed, a magnetic field which changes at a high speed is formed, when metal with good conductivity passes through the magnetic field, eddy current is generated on the surface of the metal, the direction of the magnetic field generated by the eddy current is opposite to that of a background magnetic field, and repulsion is formed to separate the metal from materials. Based on the principle, in the separation of materials such as metal or metallicity, an eddy current separator is adopted to separate the materials such as the metal or the metallicity.

For example, chinese patent No. 201811473326.0 discloses an electromagnetic eddy current separator, which includes a belt conveyor, a magnetic separator, and a separator; the magnetic separation device comprises a magnetic separation roller, the magnetic separation roller comprises a fixedly arranged main shaft, a barrel body which is arranged outside the main shaft and is arranged in a rotating mode, and a magnetic system assembly which is arranged in the barrel body and is fixedly connected with the main shaft, the magnetic system assembly comprises a plurality of magnetic system units, and each magnetic system unit comprises an iron core and a plurality of excitation coils which are arranged on the iron core; the belt type conveying device comprises a driving roller connected with the power device and a conveying belt surrounding the driving roller and the cylinder body; the material distributing device comprises an obliquely arranged material distributing plate; the electromagnetic eddy current separator of the invention utilizes the electrification of the excitation coil as a magnetic source to form a high-frequency alternating magnetic field to separate metal and garbage.

At present, a magnetic roller of the eddy current separator mainly adopts a screw to fix a magnetic block, the magnetic block in the magnetic roller is drilled, the loss of an effective magnetic field perpendicular to the surface center of the magnetic block is excessive, the magnetic force is in direct proportion to the square of the effective magnetic field, the change of the magnetic field is mapped onto the magnetic force, the influence is obvious, the material take-off height is low, and the separation effect is poor.

Based on the technical problem, the widely used improved vortex separator magnetic roller outer cylinder design generally comprises a cylinder body, wherein the cylinder body is an epoxy glass fiber winding pipe body, and a plurality of counter bores used for being connected with end covers are uniformly distributed on the side surfaces of two ends of the cylinder body. When in use, the invention is sleeved outside the magnetic rotor and then connected with the left end cover and the right end cover of the magnetic roller through the counter bores by bolts. It does not completely overcome the problem of loss of effective magnetic field.

In addition, the environment of a solid waste sorting site is severe, air is moist, moisture can invade the interior of the magnetic roller during long-time operation to corrode a zinc coating on the surface of the magnetic block, and the zinc coating at the sharp corner of the magnetic block is relatively weak and is more seriously corroded, so that the sharp corner of the magnetic block is pulverized even, and the service life and the sorting effect of the magnetic block are influenced.

Disclosure of Invention

Based on the problems in the prior art, the invention provides a magnetic roller for an eddy current separator, which can improve the separation effect and prolong the service life of the magnetic roller.

According to the technical scheme of the invention, the magnetic roller for the vortex separator comprises a shaft core, a magnetic conduction cylinder and an outer sleeve from inside to outside in sequence; the magnetic conducting cylinder is sleeved on the magnetic core, the shaft core supports the magnetic conducting cylinder, and the outer sleeve is sleeved on the magnetic conducting cylinder. The outer cambered surface of the magnetic conduction cylinder is provided with a plurality of magnetic blocks which are packaged by an outer sleeve. And magnetic roller seal plates are welded at two ends of the magnetic conduction cylinder, insulating glue is filled in all gaps between the outer sleeve and the magnetic block and between the magnetic roller seal plates and the magnetic conduction cylinder, and the magnetic block is a non-porous magnetic block.

Wherein, the openings at the two ends of the outer sleeve are sealed by annular magnetic roller seal plates; the inner side edge of the magnetic roller sealing plate is fixed on the outer edge of the magnetic conduction cylinder, and the outer side edge of the magnetic roller sealing plate is fixed on the circumference of the outer sleeve. A pouring opening of the insulating adhesive is arranged on the magnetic roller sealing plate at one end of the magnetic roller, and an exhaust opening is arranged on the magnetic roller sealing plate at the other end of the magnetic roller; the position of the exhaust port is higher than the pouring port. And chamfering the corners of the magnetic blocks.

Furthermore, a plurality of guide grooves are uniformly formed in the inner arc surface of the outer sleeve along the axial direction, and the magnetic blocks are arranged on the arc surface between the outer sleeve and the magnetic conduction cylinder along each guide groove. A plurality of guide grooves are uniformly formed in the outer arc surface of the magnetic conduction cylinder along the axial direction, and the magnetic blocks are installed on the arc surface between the outer sleeve and the magnetic conduction cylinder along each guide groove.

Preferably, the outer sleeve is connected with the magnetic roller sealing plate, the magnetic roller sealing plate is connected with the magnetic conduction cylinder, and the magnetic conduction cylinder is connected with the shaft core in a welding mode.

Compared with the prior art, the magnetic blocks in the magnetic roller are encapsulated on the outer arc surface of the magnetic conduction cylinder through the outer sleeve, screws are not needed for tightening, the adjacent magnetic blocks can be arranged more closely, the magnetic field is more uniform, the effective magnetic field is obviously improved, and meanwhile, the possibility of damage to the magnetic blocks caused by tightening is avoided; insulating glue is poured on the magnetic blocks, so that moist air can be isolated, the magnetic blocks are prevented from being corroded, and the service life of the magnetic blocks is prolonged; the chamfer angle on the magnetic block can ensure the uniformity of glue filling; the outer sleeve or the magnetic conduction cylinder is provided with the guide groove, so that the magnetic blocks can be conveniently installed, and the distribution uniformity of the magnetic blocks is guaranteed.

Drawings

FIG. 1 is a radial cross-sectional view of a magnetic roller for an eddy current separator according to the present invention;

fig. 2 is an axial cross-sectional view of a magnetic roller for an eddy current separator according to the present invention.

Wherein the reference numbers are as follows: 1-a magnetic conduction cylinder; 2-a magnetic block; 3-an outer sleeve; 4-magnetic roller closing plate; 5-an axial core; 6-insulating glue; 7-a perfusion hole; 8-air vent.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.

The invention provides a magnetic roller for an eddy current separator, which comprises a shaft core, a magnetic conduction cylinder and an outer sleeve, wherein the shaft core supports the magnetic conduction cylinder, and the outer sleeve is sleeved on the magnetic conduction cylinder. Preferably, a plurality of non-porous magnetic blocks are arranged between the magnetic conduction cylinder and the outer sleeve, and the plurality of non-porous magnetic blocks are arranged on the outer cambered surface of the magnetic conduction cylinder. Furthermore, the magnetic roller sealing plate is arranged at the end sockets at two ends of the magnetic conducting cylinder, the magnetic conducting cylinder is sleeved on the magnetic core, the outer sleeve is arranged at the outermost periphery of the magnetic roller, and the outer sleeve encapsulates the plurality of non-porous magnetic blocks arranged on the outer arc surface of the magnetic conducting cylinder. Insulating glue is poured into all gaps between the outer sleeve and the magnetic block, between the magnetic blocks, between the magnetic roller sealing plate and the magnetic conduction cylinder and the like. The nonporous magnetic block constructed by the structure can improve the magnetic field intensity and the sorting effect, and the pouring of the insulating glue can ensure that the magnetic block is prevented from being corroded by moisture and all parts of the magnetic roller are combined into a whole.

Preferably, the size of the plurality of non-porous magnetic blocks arranged on the outer arc surface of the magnetic conduction cylinder can be different from each other, the number of the non-porous magnetic blocks can be different from each other, the shapes of the magnetic blocks can be different from each other, the arrangement sequence of the magnetic poles of the magnetic blocks can be different from each other, for example, the magnetic blocks can be arranged in NNSS or NSNS, and the magnetizing directions of the magnetic blocks can be different.

A magnetic roller for a vortex separator of the present invention will be described below with reference to fig. 1 and 2, fig. 1 being a radial sectional view of the magnetic roller for a vortex separator according to the present invention; fig. 2 is an axial cross-sectional view of a magnetic roller for an eddy current separator according to the present invention.

The magnetic roller for the vortex separator sequentially comprises a shaft core 5, a magnetic conduction cylinder 1 and an outer sleeve 3 from inside to outside; the magnetic conducting cylinder 1 is sleeved on the magnetic core 5, the shaft core 5 supports the magnetic conducting cylinder 1, and the outer sleeve 3 is sleeved on the magnetic conducting cylinder 1; a plurality of hole-free magnetic blocks 2 are distributed on the outer arc surface of the magnetic conduction cylinder 1 and are packaged by an outer sleeve 3. Preferably, the magnetic roller seal plates 4 are welded at two ends of the magnetic conduction cylinder 1, and insulating glue 6 is poured into all gaps between the outer sleeve 3 and the magnetic block 2, between the magnetic roller seal plates 4 and the magnetic conduction cylinder 1, and the like.

Because the magnetic conduction cylinder 1 is provided with the hole-free magnetic blocks, the adjacent magnetic blocks can be arranged more tightly due to the absence of the screw tightening process, the magnetic field is more uniform, the effective magnetic field is obviously improved, and the possibility of damage to the magnetic blocks caused by tightening, such as microcracks, irregular deletion and the like, is also avoided.

Insulating glue 6 is poured into the outer sleeve 3, a pouring opening 7 (shown in figure 2) of the insulating glue 6 is formed in the magnetic roller sealing plate 4, the insulating glue 6 is poured from the pouring opening 7 (at a low position) in a pressurizing mode, and after a plurality of times, the insulating glue 6 reaches the exhaust opening 8 (at a high position) through gaps in the magnetic roller. To ensure that the perfusion is full, the rate of pressurization is tightly controlled throughout the perfusion process. The insulating glue with good fluidity and small shrinkage is adopted, the initial state of the insulating glue is fluid, the insulating glue is changed into a solid state after spontaneous reaction or heating after a plurality of times, and all magnetic roller parts such as the magnetic block, the magnetic conduction cylinder, the outer cylinder and the like can be tightly combined into a whole after the insulating glue is solidified.

In order to conveniently fill the insulating glue 6, the corners of the magnetic blocks 2 are subjected to micro chamfering (as shown in fig. 1), filling channels are reserved and are uniformly distributed in the circumferential direction, and the magnetic blocks can be effectively isolated from being corroded by humid air after the insulating glue is filled. The insulating glue 6 can be ensured to enter the gap between two adjacent magnetic blocks 2. The size of the chamfer angle can be different, and the chamfer angle position can be different, for example, one magnetic block can only chamfer one side, and can also chamfer all around. The pouring effect is best when the periphery is chamfered.

The outer sleeve 3 is connected with the magnetic roller sealing plate 4, the magnetic roller sealing plate 4 is connected with the magnetic conduction cylinder 1, and the magnetic conduction cylinder 1 is connected with the shaft core 5 in a welding mode. The annular openings at the two ends of the outer sleeve 3 are sealed by the magnetic roller seal plates 4, so that the insulating glue 6 can be prevented from flowing out. The inner side edge of the magnetic roller sealing plate 4 is fixed on the outer edge of the magnetic conduction cylinder 1, the outer side edge of the magnetic roller sealing plate 4 is fixed on the circumference of the outer sleeve 3, and the outer sleeve 3 can be fixedly connected to the magnetic conduction cylinder 1 besides the outer sleeve 3 is sealed.

The magnetic blocks 2 are most convenient to install when being of uniform size; a plurality of guide grooves are uniformly formed in the inner arc surface of the outer sleeve 3 along the axial direction, and the magnetic blocks 2 are arranged on the arc surface between the outer sleeve 3 and the magnetic conduction cylinder 1 along each guide groove, so that the problem that the magnetic blocks 2 are distributed unevenly due to uncontrollable positions under the action of magnetic force can be avoided; the guide groove can also be arranged on the outer surface of the magnetic conduction cylinder 1, and the functions are the same.

In the invention, the magnetic block 2 is encapsulated on the outer cambered surface of the magnetic conduction cylinder 1 through the outer sleeve 3, and the screw is not needed for fastening, so that the magnetic block 2 can adopt a hole-free magnetic block, and because the screw fastening process is not adopted, the adjacent magnetic blocks can be arranged more closely, the magnetic field is more uniform, the effective magnetic field is obviously improved, and meanwhile, the possibility of damage, such as microcracks, irregular deletion and the like, to the magnetic block 2 caused by fastening is also avoided.

In order to isolate moist air and avoid the magnet 2 from being corroded by the moist air, the magnet 2 is poured with the insulating glue 6. In order to facilitate pouring, the insulation glue 6 is poured into a gap between the magnetic conduction cylinder 1 and the outer sleeve 3 in a pouring mode, and the insulation glue 6 is poured between the outer sleeve 3 and the magnet 2, between the magnetic conduction cylinder 1 and the magnet 2 and between the magnet 2, so that the sealing performance is ensured.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.