阅读说明：本技术 一种兼具同心机构和偏心机构的涡流分选系统 (Vortex sorting system with concentric mechanism and eccentric mechanism ) 是由 王军 邵光景 徐学臣 于 2021-03-12 设计创作，主要内容包括：本发明提供一种兼具同心机构和偏心机构的涡流分选系统,其包括第三皮带小托辊、第三皮带、第三皮带驱动辊、第三磁辊和第三皮带大托辊；第三皮带小托辊位于所述涡流分选系统左上部,数量共计两个；第三磁辊与第三皮带大托辊同心装配。其中,在第三皮带大托辊正下方设置一个第三皮带驱动辊,第三皮带驱动辊的皮带包角γ满足γ≥110°；第三皮带驱动辊与第三皮带大托辊之间的距离应大于150mm。所述涡流分选系统兼具同心和偏心的两种特性,在磁系结构同样的情况下,既保证有色金属的回收率,又能保证皮带的使用寿命,使设备高效稳定的运行。(The invention provides an eddy current sorting system with a concentric mechanism and an eccentric mechanism, which comprises a third small belt carrier roller, a third belt driving roller, a third magnetic roller and a third large belt carrier roller; the third belt small carrier roller is positioned at the upper left part of the vortex sorting system, and the number of the third belt small carrier rollers is two; the third magnetic roller and a third belt large carrier roller are assembled concentrically. A third belt driving roller is arranged right below a third large belt carrier roller, and the belt wrap angle gamma of the third belt driving roller meets the condition that gamma is more than or equal to 110 degrees; the distance between the third belt driving roller and the third belt large carrier roller is more than 150 mm. The eddy current sorting system has two characteristics of concentricity and eccentricity, and under the condition that the magnetic system structure is the same, the recovery rate of nonferrous metals is ensured, the service life of a belt is also ensured, and the equipment runs efficiently and stably.)

1. The utility model provides a have vortex sorting system of concentric mechanism and eccentric mechanism concurrently which characterized in that: the belt conveyor comprises a third belt small carrier roller (3-1), a third belt (3-2), a third belt driving roller (3-3), a third magnetic roller (3-4) and a third belt large carrier roller (3-5); the third belt small carrier rollers (3-1) are positioned at the upper left part of the vortex sorting system, and the number of the third belt small carrier rollers is two; the third magnetic roller (3-4) and the third belt large carrier roller (3-5) are assembled concentrically.

2. The vortex sorting system having both concentric and eccentric mechanisms according to claim 1, wherein: a third belt driving roller (3-3) is arranged under the third large belt carrier roller (3-5), and the belt wrap angle gamma of the third belt driving roller is equal to or larger than 110 degrees.

3. The vortex sorting system having both concentric and eccentric mechanisms according to claim 2, wherein: the distance between the third belt driving roller (3-3) and the third belt large carrier roller (3-5) is larger than 150 mm.

4. The vortex sorting system having both concentric and eccentric mechanisms according to claim 3, wherein: the outer diameter of the third magnetic roller (3-4) is 270-325mm, and the outer diameter of the third belt large carrier roller (3-5) is 14mm larger than that of the third magnetic roller (3-4) synchronously.

5. The vortex sorting system having both concentric and eccentric mechanisms according to claim 2, wherein: the third belt small carrier roller (3-1) is used for assisting in supporting the belt (3-2), is in the shape of a cylindrical roller body, is provided with a long shaft in the middle, and is sleeved on bearing blocks at two ends of the frame body at two ends.

6. The vortex sorting system having both concentric and eccentric mechanisms according to claim 5, wherein: the third belt (3-2) is used for conveying materials and is of an annular structure; which is sleeved with a third belt small carrier roller (3-1), a third driving roller (3-3), a third magnetic roller (3-4) and a third belt large carrier roller (3-5).

7. The vortex sorting system having both concentric and eccentric mechanisms according to claim 1, wherein: the third belt driving roller (3-3) is used for driving the belt (3-2) to rotate, and is shaped like a cylindrical roller body, the middle part of the roller body is provided with a long shaft, and one end of the long shaft is connected with a belt motor.

8. The vortex sorting system having both concentric and eccentric mechanisms according to claim 1, wherein: the third magnetic roller (3-4) is used for providing magnetic force to select nonferrous metals, the third magnetic roller (3-4) is sleeved inside the third belt large carrier roller (3-5) and is concentric with the third belt large carrier roller, the third magnetic roller (3-4) is externally shaped like a cylindrical roller body, the middle part of the third magnetic roller is provided with a long shaft, and two ends of the long shaft are sleeved on bearing seats at two ends of the frame body.

9. The vortex sorting system having both concentric and eccentric mechanisms according to claim 1, wherein: the third belt big carrier roller (3-5) is used for supporting the belt (3-2), is in the shape of a cylindrical roller body and a hollow structure, is provided with a long shaft in the middle, and the two ends of the long shaft are sleeved on the bearing seats at the two ends of the frame body.

Technical Field

The invention belongs to the technical field of eddy current sorting, and particularly relates to an eddy current sorting system with a concentric mechanism and an eccentric mechanism.

Background

The eddy current magnetic field generation principle is mainly based on faraday's law of electromagnetic induction (a changing magnetic field produces a changing electric field) and maxwell-ampere's law (a changing electric field produces 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. At present, the principle is generally applied to the treatment of sorting urban solid waste garbage, the recovery treatment of nonferrous metals and the treatment of waste glass.

The eddy current separator is used for separating metal impurities from waste products, is a device for recovering nonferrous metals, is used for the renewable aluminum industry and the scrap steel tailing treatment industry in many fields, is caused by the explosion of urban waste incineration power plants in recent years, is widely applied to the industry for recovering and treating the tailings of the incineration urban domestic waste, and has two separation structures, wherein one is a concentric structure of a first generation eddy current product which appears earliest, and the other is an eccentric structure of a second generation eddy current product, and has obvious defects, the separation area of the former is large, but the same magnetic system has longer action distance on metal iron, and the belt is very obvious in abrasion. The magnetic separation belt has small separation area, small action distance of the magnetic system to metal iron, ensured service life of the belt, but lower recovery rate to nonferrous metals. .

Disclosure of Invention

Based on the problems in the prior art, the invention provides the vortex sorting system with the concentric mechanism and the eccentric mechanism, and the vortex sorting system with the concentric mechanism and the eccentric mechanism has freely combined modules and can generate better vortex sorting and separating effects.

According to the technical scheme of the invention, the eddy current sorting system with the concentric mechanism and the eccentric mechanism comprises a third small belt carrier roller, a third belt driving roller, a third magnetic roller and a third large belt carrier roller; the third belt small carrier roller is positioned at the upper left part of the vortex sorting system, and the number of the third belt small carrier rollers is two; the third magnetic roller and a third belt large carrier roller are assembled concentrically.

A third belt driving roller is arranged right below a third large belt carrier roller, and the belt wrap angle gamma of the third belt driving roller is equal to or larger than 110 degrees; the distance between the third belt driving roller and the third belt large carrier roller is more than 150 mm.

Preferably, the outer diameter of the third magnetic roller is 270-325mm, and the outer diameter of the large idler roller of the third belt is 14mm larger than that of the third magnetic roller synchronously.

Preferably, the third belt small carrier roller is used for auxiliary support belt, and its shape is a cylindrical roll body, and the centre is a major axis, and the major axis both ends cup joint on the bearing frame at support body both ends. The third belt is used for conveying materials and is of an annular structure; the third belt small carrier roller, the third driving roller, the third magnetic roller and the third belt large carrier roller are sleeved. The third belt driving roller is used for driving the belt to rotate, is shaped like a cylindrical roller body, is provided with a long shaft in the middle, and one end of the long shaft is connected with the belt motor.

Preferably, the third magnetic roller is used for providing magnetic force to select out non-ferrous metals, the third magnetic roller is sleeved inside the third belt large carrier roller and is concentric with the third belt large carrier roller, the outer shape of the third magnetic roller is a cylindrical roller body, the middle part of the third magnetic roller is a long shaft, and two ends of the long shaft are sleeved on bearing seats at two ends of the frame body.

More preferably, the third belt large carrier roller is used for supporting a belt, the third belt large carrier roller is in a cylindrical roller body shape and is of a hollow structure, the middle of the third belt large carrier roller is provided with a long shaft, and two ends of the long shaft are sleeved on bearing seats at two ends of the frame body.

The eddy current sorting system with the concentric mechanism and the eccentric mechanism has two characteristics of concentricity and eccentricity, and under the condition of the same magnetic system structure, the recovery rate of nonferrous metals is ensured, the service life of a belt is also ensured, and the equipment operates efficiently and stably.

Drawings

FIG. 1 is a schematic diagram of a vortex sorting system having a concentric configuration.

FIG. 2 is a schematic diagram of a vortex sorting system having an eccentric configuration.

Fig. 3 is a schematic structural diagram of an eddy current sorting system having both concentric mechanism and eccentric mechanism according to the present invention.

The reference numbers in the figures are as follows: 1-1, a first belt drive roller; 1-2, a first belt; 1-3, a first belt carrier roller; 1-4, a first magnetic roller; 2-1, a second belt drive roller; 2-2, a second belt; 2-3, a second belt carrier roller; 2-4, a second magnetic roller; 3-1, a third belt small carrier roller; 3-2, a third belt; 3-3, a third belt drive roller; 3-4, a third magnetic roller; 3-5, third belt big carrier roller.

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.

Through multiple researches, the inventor finds that for the eddy current separator, the target of the magnetic separation angle is iron, and the area where the magnetic roller is approximately attached to the belt is the magnetic separation angle area. In the magnetic separation angle area, the iron powder or iron particles are influenced by magnetic force and continuously rub the belt, and the larger the magnetic separation angle area is, the more the iron powder or iron particles are stacked; although the belt scraping strip is used for assisting in discharging the accumulated iron powder or iron particles, after the iron powder or iron particles are scraped, the iron powder or iron particles fall back to the magnetic force area due to the fact that the magnetic separation angle area is too large, and the iron powder or iron particles can be discharged after being repeatedly carried out for several times. The size of the magnetic sorting corner region therefore directly affects the service life of the belt. Prior art magnetic sorting equipment is limited by equipment design, often damaging the belt; and the material of the belt at present can not be further improved or broken through due to the limitation of the material technology for manufacturing the belt at present.

Definition of terms of the invention: the effective magnetic sorting angle is contained within the magnetic sorting angle, which can be understood as the effective magnetic force action area; the magnetic force in the effective magnetic separation angle can make the nonferrous metal pop up under the action of eddy magnetic force, and separate from the sand and stone nonmagnetic substances, so as to separate from the surface area of the belt. Effective separation of non-ferrous metals cannot be performed within the range of non-effective magnetic separation angles.

Based on the research of the application, the invention provides the eddy current separation system with the concentric mechanism and the eccentric mechanism, which makes full use of the arrangement of the effective magnetic separation angle and coordinates the arrangement between the effective magnetic separation angle and the magnetic separation angle, so that the belt can obtain a reliable and appropriate service life while the recovery rate of the separation of nonferrous metals is met.

The invention is further described below with reference to the accompanying drawings.

The eddy current separation system with a concentric structure as shown in fig. 1 has a concentric structure, the circle center of the large carrier roller and the circle center of the magnetic roller are coincident, the magnetic separation angle of the structure is 180 degrees, but if the effective separation angle is also 180 degrees, the position of the material separating plate is changed to be horizontally placed, non-ferrous metals and impurity sands are mixed together, the separation purpose cannot be achieved, the method is a limit description method, actually, the effective separation angle is unreasonable when the effective separation angle is larger than 90 degrees, and the effective separation angle alpha of the non-ferrous metals is 90 degrees. Therefore, the effective separation angle can be defined as a central angle corresponding to the arc length of the effective contact between the belt and the magnetic system, and the effective separation angle range is more than 0 degree and less than or equal to 90 degrees considering that the position of the material distribution plate is necessarily outside the diameter of the magnetic system in the horizontal direction. The effective contact generally refers to an area corresponding to the distance from the surface of a magnetic block of a magnetic system to the surface of a belt being less than or equal to 10mm, a magnetic separation angle is defined as a central angle corresponding to the arc length of the magnetic system in effective contact with the belt, and the effective range is 0-360 degrees regardless of the position of a material distribution plate. Effective contact is as defined above.

In fig. 1, the eddy current sorting system having a concentric structure includes a first belt driving roller 1-1, a first belt 1-2, a first belt idler roller 1-3, and a first magnetic roller 1-4.

The first belt driving roller 1-1 is used for driving the belt 1-2 to rotate, is shaped like a cylindrical roller body, is provided with a long shaft in the middle, and one end of the long shaft is connected with a belt motor.

The first belt 1-2 is used for conveying materials and is of an annular structure; which is sleeved with a first driving roller 1-1 and a first magnetic roller 1-3.

The first belt carrier roller 1-3 plays a role of supporting the belt 1-2 in an auxiliary way, is in a cylindrical roller body shape and a hollow structure, the middle part of the first belt carrier roller is provided with a long shaft, and two ends of the long shaft are sleeved on bearing blocks at two ends of the frame body.

The first magnetic roller 1-4 is used for providing magnetic force to select nonferrous metals, and the first magnetic roller 1-4 is sleeved inside the first belt carrier roller 1-3 and is concentric with the first belt carrier roller 1-3. The external shape of the roller body is a cylindrical roller body, the middle part of the roller body is a long shaft, and two ends of the long shaft are sleeved on bearing seats at two ends of the frame body.

As shown in figure 2, the eddy current sorting system with the eccentric structure is of the eccentric structure, the circle center of the large carrier roller and the circle center of the magnetic roller are not coincident, the center distance between the large carrier roller and the magnetic roller is h, the effective sorting angle of nonferrous metals in the structure is alpha, the alpha is about 15-20 degrees, and the magnetic sorting angle is also 15-20 degrees.

The eddy current sorting system having an eccentric structure as shown in fig. 2 includes a second belt driving roller 2-1, a second belt 2-2, a second belt carrier roller 2-3, and a second magnetic roller 2-4.

And the second belt driving roller 2-1 is used for driving the belt 2-2 to rotate, is shaped like a cylindrical roller body, is provided with a long shaft in the middle, and is connected with a belt motor at one end.

A second belt 2-2 for transporting the material, having an annular structure; which is sleeved with a second driving roller 2-1 and a second belt carrier roller 2-3.

And the second belt carrier roller 2-3 plays a role of supporting the belt 2-2 in an auxiliary manner, is in a cylindrical roller body and is in a hollow structure, the middle part of the second belt carrier roller is provided with a long shaft, and two ends of the long shaft are sleeved on bearing blocks at two ends of the frame body.

And the second magnetic roller 2-4 is used for providing magnetic force to select nonferrous metals, and the second magnetic roller 2-4 is sleeved inside the second belt carrier roller 2-3 and is not concentric with the second belt carrier roller. The second magnetic roller 2-4 is a cylindrical roller body in the shape of a cylinder, a long shaft is arranged in the middle, and two ends of the long shaft are sleeved on bearing seats at two ends of the frame body.

As shown in FIG. 3, the eddy current sorting system with both concentric mechanism and eccentric mechanism according to the present invention comprises a third small belt idler 3-1, a third belt 3-2, a third belt driving roller 3-3, a third magnetic roller 3-4 and a third large belt idler 3-5. The third belt small carrier roller 3-1 is positioned at the upper left part of the whole mechanism in the attached figure 3, and the number of the third belt small carrier roller is two. The inclination angle theta of the belt is more than or equal to 10 degrees and less than or equal to 15 degrees, and the third magnetic roller 3-4 and the third belt large carrier roller 3-5 are concentrically assembled (the inclination angle of the belt is defined as the included angle between the running direction of the belt and the horizontal direction). A third belt driving roller 3-3 is arranged under a third large belt carrier roller 3-5, a belt wrap angle of the third belt driving roller is equal to or larger than gamma 110 degrees, and (the belt wrap angle is defined as a central angle corresponding to the arc length of the belt contacting with the driving roller) so as to ensure enough driving friction force and ensure enough friction range to enable the driving roller to normally drive the belt to operate. The effective magnetic separation angle alpha is more than or equal to 45 degrees and less than or equal to 60 degrees, the distance between the third belt driving roller 3-3 and the third belt large carrier roller 3-5 is more than 150mm, and the third belt driving roller 3-3 is not influenced by the magnetic force of the third magnetic roller 3-4. The outer diameter of the third magnetic roller 3-4 is 270-325mm, and the outer diameter of the third belt large carrier roller 3-5 is 14mm larger than that of the third magnetic roller 3-4.

In more detail, the eddy current sorting system with the concentric mechanism and the eccentric mechanism comprises a third small belt carrier roller 3-1, a third belt 3-2, a third belt driving roller 3-3, a third magnetic roller 3-4 and a third large belt carrier roller 3-5.

And the third belt small carrier roller 3-1 is used for assisting in supporting the belt 3-2, is shaped like a cylindrical roller body, is provided with a long shaft in the middle, and is sleeved on the bearing seats at the two ends of the frame body at the two ends of the long shaft.

A third belt 3-2 for transporting the material, having an annular structure; which is sleeved with a third belt small carrier roller 3-1, a third driving roller 3-3, a third magnetic roller 3-4 and a third belt large carrier roller 3-5.

And the third belt driving roller 3-3 is used for driving the belt 3-2 to rotate, is shaped like a cylindrical roller body, is provided with a long shaft in the middle, and one end of the long shaft is connected with a belt motor.

And the third magnetic roller 3-4 is used for providing magnetic force to select nonferrous metals, the third magnetic roller 3-4 is sleeved inside the third belt large carrier roller 3-5 and is concentric with the third belt large carrier roller, the outer shape of the third magnetic roller 3-4 is a cylindrical roller body, the middle part of the third magnetic roller is a long shaft, and two ends of the long shaft are sleeved on bearing seats at two ends of the frame body.

And the third belt large carrier roller 3-5 is used for supporting the belt 3-2, is in a cylindrical roller body shape, has a hollow structure, is provided with a long shaft in the middle, and is sleeved on the bearing blocks at the two ends of the frame body at two ends.

In the embodiment, referring to fig. 3, in order to make α greater than or equal to 45 ° and less than or equal to 60 °, a guide roller or a drive roller is further disposed below the original large carrier roller, so that the belt can vertically face downward and no longer adhere to the magnetic system to rotate. In addition, the horizontal running of the belt is changed into the running with an inclination angle, the inclination angle is more than or equal to 10 degrees and less than or equal to 15 degrees, the inclination angle has two functions, firstly, the effective magnetic separation angle can be continuously reduced, secondly, the effective magnetic separation angle can be inclined forward, thus the distance between the jumping point of the nonferrous metal particles and the distributing plate is reduced, the nonferrous metal particles cross the distributing plate more easily, and the recovery rate of the nonferrous metal is further increased. Further, the magnetic roller radius of the eddy current sorting system having both the concentric mechanism and the eccentric mechanism may be the same as or smaller than those of the eddy current sorting system having only the concentric structure and the eddy current sorting system having only the eccentric structure. The arc lengths corresponding to the respective effective separation angles alpha are ensured to meet the relationship. The suitable range of the effective magnetic separation angle is more than or equal to 45 degrees and less than or equal to 60 degrees.

In the actual separation practice, the separation is influenced by effective magnetic separation and equipment service life, and the first and effective magnetic separation angles are large, so that the long-term effect of eddy force on nonferrous metals can be ensured to increase the recovery rate, and the adverse effect caused by the excessively thick material layer or the small-section contact belt of the nonferrous metal particles is reduced. And secondly, the magnetic separation angle is ensured to be small, the acting time and distance of a magnetic field to metal iron are reduced, and the service life of the belt is ensured.

The eddy current sorting system with both concentric and eccentric mechanisms achieves effective magnetic sorting and equipment life adaptation while overriding the adaptation data of eddy current sorting systems with only concentric structures and eddy current sorting systems with only eccentric structures. According to multiple fatigue tests and wear tests, the belt in the eddy current sorting system with the concentric structure only needs to be replaced after being used for 3 months, and the recovery rate of nonferrous metals in the eddy current sorting system with the eccentric structure only can not reach 80%. The service life of the belt of the eddy current separation system with the concentric mechanism and the eccentric mechanism can reach 2 years, and the recovery rate of nonferrous metals can reach more than 90%.

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.