WO2007082436A1

WO2007082436A1 - Ultra-strong permanent-magnetic vortex agitator

Info

Publication number: WO2007082436A1
Application number: PCT/CN2006/002903
Authority: WO
Inventors: Zhaolian Wang; Hongli Jia; Hongbin Zhang; Fengliang Liu
Original assignee: Shandong Huate Magnet Technology Co., Ltd
Priority date: 2006-01-16
Filing date: 2006-10-30
Publication date: 2007-07-26
Also published as: KR20080066824A; DE112006003665T5; AU2006336136A1; AU2006336136B2; CN1821695A; CN100373120C; DE112006003665B4; KR100983389B1; AU2006336136B8

Abstract

An ultra-strong permanent-magnetic vortex agitator comprises a frame (3), a main shaft (14), a rotary disc (13), permanent magnets (15) and a non-magnetic safety cover (9). The main shaft (14) is vertical to horizon, and its top end extends through the frame (3) and is provided with a rotary disc (13). The rotary disc (13) is placed horizontally with multiple permanent magnets (15) fixed on the top of it. The permanent magnets (15) are arranged in such a manner that there is at least one closed loop from N-pole to S-pole. The permanent magnets (15) are Nd-Fe-B permanent magnets that are placed in the inner chamber of the non-magnetic safety cover (9) fixed on the frame (3). The non-magnetic safety cover (9) is provided with a round non-metal heat-resistant plate (12) on the top surface of it and is provided with an air-cooling device. The lower end of the main shaft (14) is attached to a decelerating mechanism (1) fixed on the bottom surface of the frame (3), and the power input shaft of the decelerating mechanism (1) is attached to the rotary shaft of a frequency-modulated variable-speed motor (2). The frequency-modulated variable-speed motor (2) is controlled by a programmable logic controller (21) in a controlling-cabinet according to operational program to realize rotation in forward and reverse directions alternately, and to drive the multiple permanent magnets (15) to rotate in forward and reverse directions synchronously through the decelerating mechanism (1), the main shaft (14) and the rotary disc (13). The ultra-strong permanent-magnetic vortex agitator is excellent in energy saving and safety, and is suitable for smelting-furnace with flat bottom which is widely utilized.

Description

Super permanent magnet cyclone mixer

The invention relates to a non-contact stirring device for smelting non-ferrous metals, and more particularly to a super-strong permanent-magnet cyclone mixer which is placed under the bottom of a non-ferrous metal smelting furnace. Background technique

Agitators are commonly used in the smelting of non-ferrous metals. At present, widely used agitators can be divided into electromagnetic stirring, mechanical stirring and manual stirring according to the stirring method. The electromagnetic stirring device uses a traveling wave magnetic field generated by a special wire 圏 to flow the colored metal solution in the smelting furnace. The heat dissipation mode of the electromagnetic stirring device is to use the circulating water for heat dissipation, and there are disadvantages: 1. High consumption, a 30-ton smelting furnace consumes more than 300 kW per hour; 2. Because the coil is hollow, the heat is removed through the water circulation, so the requirements for water treatment are high, leakage is easy, and safety is poor; 3. The structure is complicated. There are many pipelines and it is troublesome to install and use.

The principle of mechanical agitation is a kind of contact agitation. Due to the limitation of the smelting furnace, there are disadvantages of small mixing range, easy burning of parts and low stirring speed.

Manual mixing is more primitive, and there is a problem of high labor intensity, low stirring speed, poor environment, and uneven mixing.

For this purpose, a melting furnace with a stirring device and a stirring device are disclosed in the Chinese patent 200410071301. X. The stirring device uses a plurality of magnets, and then the motor drives the magnet to rotate to form a rotating magnetic field, and pushes the non-ferrous metal solution for directional flow. Therefore, the non-ferrous metal solution is turned over in the furnace, but the stirring device can only be applied to a smelting furnace in which the bottom of the furnace is an inclined surface. At present, in the smelting of non-ferrous metals, flat-bottom smelting furnaces are commonly used. Therefore, Chinese Patent No. 200410071301. The stirring device cannot be applied to the flat-bottom smelting furnace, and has a narrow application range. Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to provide a super-strong permanent magnetic swirling agitator which is energy-saving and safe and suitable for use in a flat-bottom smelting furnace.

The super-strong permanent magnet cyclone stirrer of the present invention comprises a frame, a main shaft, a turntable, a permanent magnet, and a non-magnetic safety cover. The upper end of the main shaft passes through the frame and extends outward, and the upper end of the main shaft is mounted The rotating disc has a plurality of the permanent magnets fixed above the rotating disc, and the permanent magnets are arranged to have at least one closed loop from the N pole to the S pole, wherein the main shaft is perpendicular to the horizontal plane, The turntable is placed horizontally, each permanent magnet is a neodymium iron boron permanent magnet, and the neodymium iron boron permanent magnet is located in the inner cavity of the non-magnetic safety cover fixed on the frame, the top of the non-magnetic safety cover The surface is provided with a circular non-metallic heat-resistant plate, and the non-magnetic safety cover is provided with an air-cooling mechanism, and the lower end of the main shaft is directly connected to a reducer fixed on the bottom surface of the frame, and the power of the reducer The input shaft is connected with the rotating shaft of the frequency regulating motor, and the frequency regulating motor is controlled by the programmable controller in the control cabinet to realize the alternate forward and reverse rotation, and through the reducer, the main , The plurality of disk drives for permanent magnet synchronous forward and reverse.

The shape of the permanent magnet is a rectangular parallelepiped or a rectangular parallelepiped, and the arrangement is such that the permanent magnets of the even blocks are arranged radially, and the polarities of the opposite ends of the adjacent two permanent magnets are opposite.

The shape of the permanent magnet is square and wedge-shaped, wherein the number of square magnets is an odd number, and the number of wedge magnets is two. The permanent magnets are linearly arranged on the turntable and closely abut each other, wherein two wedge magnets are respectively placed At both ends, the polarity of a square magnet at the center is placed laterally, and the polarities of the same magnets on the same side of the laterally placed permanent magnets are the same.

A yoke and a yoke capable of reducing magnetic leakage are sequentially fixed between the permanent magnet and the turntable. The secondary yoke is used to increase the strength of the upper magnetic lines of force.

The air-cooling mechanism includes an axial flow fan or a centrifugal fan fixed to one side of the non-magnetic safety cover, and an air guiding tube on a top side of the non-magnetic safety cover, the air guiding tube and the high-pressure centrifugal fan Connected

The number of the axial flow fan or the centrifugal fan is one or two to four.

In order to be able to detect the temperature in the inner cavity of the non-magnetic safety enclosure, a thermocouple is mounted on the non-magnetic safety enclosure to control the automatic operation and stop of the axial or centrifugal fan.

For convenience of use, the super-strong permanent magnet cyclone stirrer of the present invention further comprises a height adjusting device and a running mechanism, wherein the height adjusting device comprises four respectively disposed on four corners of the frame and driven by the motor. A worm gear screw lift.

The running mechanism includes a running wheel mounted at the bottom of the frame, and the traveling wheel includes a driving wheel reducer connection.

The beneficial effects of the super-strong permanent magnet cyclone stirrer in the invention are as follows: 1. The permanent magnetic system composed of permanent magnets has strong magnetic field strength and low power consumption, and only 5% of the electromagnetic stirrer has remarkable energy-saving effect; Simple structure, reliable operation, low failure rate and good safety; 3. Suitable for flat-bottom smelting furnace with a large number of surfaces. DRAWINGS

1 is a schematic structural view of a super-strong permanent magnet cyclone mixer according to the present invention;

Figure 2 is a plan view of the agitator shown in Figure 1;

Figure 3 is a schematic structural view of a transmission system and a permanent magnetic system in the present invention;

Figure 4 is a plan view of a permanent magnetic system composed of two permanent magnets; Figure 5 is a plan view of a permanent magnetic system composed of four permanent magnets;

Figure 6 is a plan view of a permanent magnetic system composed of six permanent magnets;

Figure 7 is a cross-sectional view of a permanent magnetic system composed of three rectangular parallelepiped permanent magnets and two wedge-shaped permanent magnets fixed in a concave yoke;

Figure 8 is a plan view of Figure 7;

Fig. 9 is a schematic diagram of the structure of the programmable controller circuit for controlling the frequency modulation motor according to the operating program; Fig. 10 is a control flow chart of the forward rotation reversal of the frequency modulation motor.

In the figure: 1 is the reducer, 2 is the FM motor, 3 is the frame, 4 is the cycloidal reducer with brake motor, 5 is the walking wheel, 6 is the worm gear screw lift, 7 is the shaft Flow fan or centrifugal fan, 8 for thermocouple, 9 for non-magnetic safety cover, 10 for air duct, 11 for high pressure centrifugal fan, 12 for non-metallic heat-resistant plate, 13 for turntable, 14 for main shaft, 15 for permanent magnet 16 is a yoke, 17 is a secondary yoke, 18 is a chain, 19 is a motor, 20 is a casing, and 21 is a programmable controller. detailed description

Specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 to FIG. 3, the super-strong permanent magnet cyclone stirrer of the present invention comprises a frame 3, and an outer casing 20 is disposed on the outer side of the frame 3. The main shaft 14 is disposed inside the casing 20 perpendicular to the horizontal plane. The upper end of the main shaft 14 extends through the frame 3 and the casing 20, and is installed with a horizontally placed turntable 13 and a lower end connected to a power system provided on the frame 3. Above the turntable 13 is a plurality of permanent magnets 15 fixed by a secondary yoke 17 for reducing magnetic flux leakage, and the yokes 16 are uniformly spaced in a radial arrangement and are adjacent to the two permanent magnets 15 The opposite ends are opposite in polarity, forming one or more closed loops from the N pole to the S pole. The shape of the permanent magnets 15 may be a rectangular parallelepiped or a rectangular parallelepiped, and the number of the arrays is an even number. As shown in FIG. 4, FIG. 5, and FIG. 6, two, four, and six permanent magnets 15 respectively. The arrangement of the distribution. Each of the permanent magnets 15 is a neodymium iron boron permanent magnet. The permanent magnets of the neodymium iron boron are located in the inner cavity of the non-magnetic safety cover 9 fixed to the frame 3 and the casing 20, and the side of the non-magnetic safety cover 9 is mounted thereon. The thermocouple 8 is provided with a circular non-metallic heat-resistant plate 12 on the top surface, and an air-cooling mechanism is disposed on the non-magnetic safety cover 9. The lower end of the main shaft 14 is directly connected to a power system provided on the bottom surface of the frame 3. The power system includes a speed reducer 1 fixed to the bottom surface of the frame 3, a power input shaft of the reducer 1 and a rotating shaft of the frequency modulation motor 2 Connected, the FM motor 1 is controlled by the programmable controller 21 that controls the rejection to achieve alternate forward and reverse rotation according to the operating program control. The 00, 0. 01 in the programmable controller 21, as shown in FIG. 9 and FIG. 10, wherein the plurality of permanent magnets 15 are rotated forward and reverse, as shown in FIG. 9 and FIG. , 0. 02, 0. 03, 0. 04 is the input port, 1 0. 0, 10. 1, 1 0. 2, 1 0. 3 is the output port, SA1-11 is the centralized control status button, SAI-21 For the on-site status button, SB11 is the forward rotation start button, SB12 is the stop button, SB1 3 is the reverse start button, HL1 is the forward rotation indicator, HL2 is the reverse indicator, HL3 is the fault indicator, Kl, Κ2, Κ3 In order to control the AC contactor of the FM motor.

The shape of the permanent magnet 15 may also be a rectangular parallelepiped (or cube) and a wedge-shaped block as shown in FIGS. 7 and 8, wherein the number of the rectangular parallelepiped is three (may be five, seven or more), and the wedge-shaped block The number of the permanent magnets 15 is linearly arranged on the turntable 13 and closely abutted, wherein the permanent magnets 15 of the two wedge-shaped blocks are respectively placed at the two ends, and the polarities of a rectangular parallelepiped magnet at the center are laterally placed for The magnetic lines of force of the permanent magnets on both sides are forced to be outwardly offset, thereby increasing the radiation width of the magnetic lines of force and increasing the height. The polarities of the permanent magnets on both sides of the permanent magnet 15 placed in the lateral direction are the same.

The air-cooling mechanism includes an axial flow fan or a centrifugal fan 7 fixed to one side of the non-magnetic safety cover 9, and an air guiding tube 10 connected to the axial fan or the centrifugal fan 7 on the top side of the non-magnetic safety cover 9 . At the same time, the air guiding duct 10 is connected with the separately provided high-pressure centrifugal fan 11, the axial flow fan or the centrifugal fan 7 The number can be one or two, three, four.

In order to adapt to different metal smelting furnaces, the super-strong permanent magnet cyclone stirrer of the present invention is provided with a height adjusting device at the bottom thereof, and at the same time, a traveling mechanism is arranged at the bottom thereof for the convenience of movement. The height adjusting device comprises four worm gear screw lifts 6 which are respectively arranged on four corners of the frame 3 and are driven by the motor I ⁹ arranged by themselves. The running mechanism comprises a running wheel ⁵ mounted on the bottom of the frame 3, the traveling wheel 5 comprises a driving wheel and a driven wheel, wherein the driving wheel passes through the chain 18 and a cycloidal pin wheel with a brake motor mounted on the top surface of the frame 3 The reducer 4 is connected.

The super-strong permanent magnet cyclone stirrer of the invention is horizontally placed under the non-ferrous metal smelting furnace near the bottom of the furnace in use, and the turntable in the working position is in a horizontal position, and is suitable for a large-scale flat-bottom smelting furnace. Since the high-performance NdFeB permanent magnet is used as the permanent magnetic system, the permanent magnetic system is placed in the non-magnetic safety cover, so that it has the advantages of strong magnetic field strength and large magnetic field depth, and magnetic material made of magnetic conductive material. The yoke and the secondary yoke further increase the strength of the magnetic lines of force, and thus have a better effect. In the present invention, the permanent magnetic system of the super-strong permanent magnet cyclone stirrer is alternately rotated forward and reversely under the driving of the frequency modulation motor controlled by the programmable controller according to the operating program, and generates a rotating magnetic field, which makes the colored magnetic field The metal solution is rotated and tumbling in the smelting furnace to achieve the purpose of stirring. The cooling system adopts an air-cooling mechanism. The non-magnetic safety cover is cooled by an axial fan or a centrifugal fan. The top surface of the non-magnetic safety cover is cooled by a wind pipe connected to a high-pressure centrifugal fan to ensure air curtain cooling. The working temperature of the permanent magnetic system is not higher than the set temperature, such as 42 °C, which has the advantage of safety and reliability. The transmission system is driven by the frequency modulation motor, and the speed reducer is directly connected with the main shaft. The structure is simple and the failure rate is low.

The speed reducer 1, the frequency modulation speed regulating motor 2, the cycloidal pin gear reducer ⁴ with the brake motor, the worm wheel screw lift 6, the axial flow fan 7, the height adjusting device, the traveling mechanism, and the high pressure centrifugal fan 11 The programmable controller 21 is a commercially available product on the market, and it is easy for those skilled in the art to implement it, and thus its structure and working principle will not be described in detail.

Claims

Claim

1. A super-strong permanent magnet cyclone mixer comprising a frame, a main shaft, a turntable, a permanent magnet, a non-magnetic safety cover, an upper end of the main shaft passing through the frame and extending outward, an upper end of the main shaft Mounting the turntable, the plurality of the permanent magnets are fixed on the turntable, and the permanent magnets are arranged to have at least one closed loop from the N pole to the S pole, wherein the main shaft is perpendicular to the horizontal plane. The turntable is placed horizontally, each permanent magnet is a neodymium iron boron permanent magnet, and the neodymium iron boron permanent magnet is located in the inner cavity of the non-magnetic safety cover fixed on the frame, the non-magnetic safety cover a circular non-metallic heat-resistant plate is arranged on the top surface, and an air-cooling mechanism is arranged on the non-magnetic safety cover, and the lower end of the main shaft is directly connected to a reducer fixed on the bottom surface of the frame, and the reducer is The power input shaft is connected with the rotating shaft of the frequency regulating motor, and the frequency regulating motor is controlled by the programmable controller in the control cabinet to realize the alternate forward and reverse rotation, and through the reducer, the main , The movable turntable with a plurality of permanent magnet forward and reverse synchronously.

2. The super-strong permanent magnet cyclone stirrer according to claim 1, wherein: the shape of the permanent magnet is a rectangular parallelepiped or a rectangular parallelepiped, and the arrangement is that the even-numbered permanent magnets are radially arranged, and two adjacent permanent magnets are arranged. The opposite ends have opposite polarities.

3. The super-strong permanent magnet cyclone stirrer according to claim 1, wherein: the permanent magnet has a square shape and a wedge shape, wherein the number of square magnets is an odd number, and the number of wedge magnets is two. The permanent magnets are linearly arranged on the turntable and closely abut each other, wherein two wedge magnets are respectively placed at the two ends, and the polarity of a square magnet at the center is laterally placed, and the permanent magnets on the same side of the laterally placed permanent magnets The same polarity is the same.

The super-strong permanent magnet cyclone stirrer according to any one of claims 1 to 3, wherein a yoke and a sub-yoke are sequentially fixed between the permanent magnet and the turntable.

5. The super-strong permanent magnet cyclone mixer according to claim 1, wherein: said air-cooling mechanism comprises an axial flow fan or a centrifugal fan fixed to one side of said non-magnetic safety cover, and located at said The air guiding tube on the top side of the non-magnetic safety cover is connected to the high-pressure centrifugal fan.

6. The super-strong permanent magnet cyclone mixer according to claim 5, wherein: the number of the axial flow fan or the centrifugal fan is one or two to four.

7. The super-strong permanent magnet cyclone mixer according to claim 1, wherein: said non-magnetic safety cover is provided with a thermocouple.

8. The super-strong permanent magnet cyclone agitator according to claim 1, 2, 3, 5, 6 or 7, characterized in that it further comprises a height adjusting device and a running mechanism.

9. The super-strong permanent magnet cyclone stirrer according to claim 8, wherein: said height adjusting means comprises four worm gear screw lifts respectively disposed on four corners of the frame and driven by a motor .

10. The super-strong permanent magnet cyclone mixer according to claim 8, wherein: the traveling mechanism comprises a walking wheel installed at a bottom of the rack, and the traveling wheel comprises a driving wheel and a driven wheel, .

11. The super-strong permanent magnet cyclone mixer according to claim 3, wherein the square permanent magnet has a rectangular parallelepiped shape or a rectangular parallelepiped shape.