CN203862378U - Reciprocating permanent-magnet high-field-intensity magnetic filter - Google Patents

Abstract

The utility model discloses a reciprocating type permanent magnetism high field intensity magnetic filter, concretely relates to even background magnetic induction in every separation space can reach reciprocating type permanent magnetism high field intensity magnetic filter more than 1.5T, and the technical problem that solve is that the intensity of the separation region field intensity of magnet separator among the prior art is low, is difficult for the demagnetization, and the handling capacity of equipment is less, the utility model discloses a move the magnetism system, move the both ends of magnetism system and establish in the frame through cylinder I and cylinder II, move magnetism system both sides and be equipped with I and II of demagnetization magnetism system of mutual symmetry, I of demagnetization magnetism system and II of demagnetization magnetism system are parallel to each other to be fixed on the fixed plate of frame. The utility model adopting the technical proposal ensures that the uniform background magnetic induction intensity of each sorting space can reach more than 1.5T; and demagnetization is convenient, and continuous operation can be realized.

Description

Reciprocating permanent magnet high field strength magnetic filter

technical field

The utility model relates to a magnetic separator technology, in particular to design a reciprocating permanent magnet high-field magnetic filter machine. The magnetic filter can be used for sorting weakly magnetic minerals, removing iron and purifying non-metallic minerals, analyzing the content of magnetic minerals in ores, and producing magnetized water and fertilizers.

Background technique

At present, almost all weak-field magnetic separation equipment and most medium-field-strength magnetic separators use permanent magnet magnetic systems, but high-field-strength magnetic separators are still dominated by electromagnetic magnetic systems. How to use permanent magnetic materials for reasonable The design of the magnetic system and magnetic circuit enables the separation area to obtain high magnetic field strength, which has become one of the focuses of permanent magnetic separator research.

Chen Jin, Sun Zhongyuan, Feng Dingwu and others from Central South University of Technology developed a magnetic system structure, which is a wave-shaped magnetic field multi-pole permanent magnet system. The entire magnetic system is composed of inner and outer magnetic systems to form a closed magnetic system. The magnetic systems are all magnet armored extrusion magnetic systems, and the field strength on the center line is distributed in a sinusoidal curve. The separation gap between the inner and outer magnetic systems can be adjusted to meet the requirements of different materials for the separation field strength. The highest background field strength is 1T.

Chang Wenchen proposed the concept of micro-guide series-parallel permanent magnet magnetic circuit technology in the patent application materials of multi-element permanent magnet high gradient magnetic separator. Its magnetic system is to drop a magnetic concentrating plate on the basic magnetic source strontium ferrite, and then drop a smaller size high-field-strength NdFeB permanent magnet to form a composite magnetic source. The background field can reach 0.7-0.9T. Connect n pairs (n is an even number) of the same composite magnetic source directly in series; there is no need to connect the magnetic system with the yoke iron and the magnetic plate to form a series non-magnetic circuit, forming multiple sorting spaces, and two adjacent composite magnetic sources in series Share a piece of strontium ferrite. An even number of non-conductive series magnetic circuits can form a series-parallel magnetic circuit only through the closing action of the two outermost magnetic plates or yoke iron; multiple non-conductive magnetic circuits in the overall structure form a completely closed magnetic circuit, the highest background field Strong 0.9T.

The Czech Republic adopts two opposite-pole permanent magnets and an iron drive to form a large-cavity window-frame magnet structure, and a sorting box with the same shape as the cavity surrounded by the magnetic system is arranged in it, and the sorting box is filled with magnetic accumulation media. A single magnetic pole is a large magnetic block composed of multiple small NdFeB magnetic blocks. Each magnetic block is put into a stainless steel box and then welded on U-shaped steel plates of different specifications. Then two U-shaped steel plates are assembled into two A closed magnetic circuit composed of two large magnetic blocks that can move each other, when the sorting gap is 30mm, the uniform magnetic induction intensity of the closed magnetic field background can reach 0.9T.

Patent No. 200910064167.3 is a permanent magnet high-field magnetic filter. The main magnetic system of the device consists of several permanent magnet rings connected in series in the form of coaxial lines and permanent magnet rings that are squeezed on each other and stacked on each other. The inner ring cavity of the permanent magnet ring is used as a sorting space, and the polarity of the magnetic rings on both sides of the same yoke is the same; The magnetic steel is armored to form auxiliary magnetic poles, so that each magnetic ring is squeezed from the upper, lower and outer sides to increase the magnetic flux in the sorting space. Since the inner ring cavity of the permanent magnet magnetic ring is used as the sorting space, the closed magnetic system is formed by three-sided homopolar extrusion technology in the magnetic system design, so that the magnetic field strength on the central axis of the sorting cavity can reach 1.3T. The magnetic field intensity is not uniform, the volume of the magnetic system is large, the equipment structure is complicated, the assembly is difficult, and it is not easy to popularize and apply.

To sum up, most of the current permanent magnet strong magnetic separators adopt a closed-circuit magnetic system structure, and the separation space is constructed by two or more separate magnets. Magnetic technology, but the field strength in the sorting area is mostly below 1T, which is difficult to meet the needs of sorting weak magnetic powders, and the design of the magnetic system needs to be further optimized.

Utility model content

In view of the low field strength in the sorting area of the magnetic separator in the prior art, it is not easy to demagnetize, and the processing capacity of the equipment is small, the utility model provides a uniform background magnetic induction intensity of each sorting space that can reach more than 1.5T The reciprocating permanent magnet high field strength magnetic filter.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a reciprocating permanent magnet high-field magnetic filter, including a moving magnetic system, and the two ends of the moving magnetic system are arranged on the frame through the cylinder I and the cylinder II , The two sides of the moving magnet system are provided with mutually symmetrical demagnetization magnet system I and demagnetization magnet system II, and the demagnetization magnet system I and demagnetization magnet system II are fixed parallel to each other on the fixed plate of the frame.

The upper and lower sides of the moving magnet system are equipped with armor plates, the upper, lower and outer sides of the demagnetization magnet system I and the demagnetization magnet system II are equipped with armor plates, and the inner sides of the demagnetization magnet system I and the demagnetization magnet system II are equipped with armor plates. The same poles are opposite, and the moving magnet system is opposite to the demagnetization magnetic system I and the demagnetization magnetic system II.

The moving magnetic system includes two magnetic system end plates, two parallel magnetic system armor plates are fixed between the two magnetic system end plates, and an end magnetic block is installed on the inner side of the two magnetic system end plates, and the end magnetic block The inner side of the T-shaped yoke is a T-shaped yoke, and the inner side of the T-shaped yoke is alternately arranged with magnetic blocks and cross yokes. The cavity composed of magnetic blocks and cross yokes is used as a sorting space, and the sorting space is filled with magnetic accumulation media.

The demagnetization magnetic system includes two magnetic system end plates, two parallel magnetic system armor plates are fixed between the two magnetic system end plates to form a rectangle, and the magnetic blocks and yokes between the two magnetic system end plates alternately arranged.

Compared with the existing technology, 1) the utility model adopts the homopolar extrusion technology and the closed-circuit magnetic system design, which ensures that the uniform background magnetic induction intensity of each sorting space can reach more than 1.5T; the two sides of the moving magnetic system are demagnetized Magnetic system, and the moving magnetic system moves up and down through the cylinder to achieve the effect of convenient demagnetization and continuous operation;

2) Since the magnet on the permanent magnet action surface is exposed, the weak magnetic material is directly attached to the surface of the action surface during sorting. The force acts completely on weakly magnetic minerals, and there is no loss of magnetic force on the acting surface;

3) The structure of the utility model is simple and easy to assemble. The dense distribution of magnetic force lines solves the serious problem of closed magnetic circuit leakage.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a schematic diagram of the structure of the moving magnet system.

Figure 3 is a schematic diagram of the structure of the demagnetization magnetic system.

Detailed ways

As shown in Figure 1, a reciprocating permanent magnet high-field magnetic filter includes a moving magnet system 1, the two ends of the moving magnet system 1 are arranged on the frame 7 through the cylinder I4 and the cylinder II5, and the moving magnet system 1 There are mutually symmetrical demagnetization magnetic systems I2 and demagnetization magnetic systems II3 on both sides, and the demagnetization magnetic systems I2 and demagnetization magnetic systems II3 are fixed on the fixed plate 6 of the frame 7 in parallel with each other.

The upper and lower sides of the moving magnet system 1 are equipped with armor plates, the upper, lower and outer sides of the demagnetization magnet system I2 and demagnetization magnet system II3 are equipped with armor plates, and the inner sides of the demagnetization magnet system I2 and demagnetization magnet system II3 are the same The poles are opposite, and the moving magnet system 1 is opposite to the demagnetizing magnetic system I2 and the demagnetizing magnetic system II3 with different poles.

As shown in Figure 2, the moving magnet system 1 includes two magnetic system end plates 8, two parallel magnetic system armor plates 9 are fixed between the two magnetic system end plates 8, and the inner sides of the two magnetic system end plates 8 There is a block end magnet 10, the inner side of the end magnet 10 is a T-shaped yoke 11, and the inner side of the T-shaped yoke 11 is alternately arranged with a magnetic block 12 and a cross yoke 13, and the cavity composed of the magnetic block 12 and the cross yoke 13 As a sorting space, the sorting space is filled with a magnetic gathering medium, and may also be a cavity.

As shown in Figure 3, the demagnetization magnetic system includes two magnetic system end plates 14, and two parallel magnetic system armor plates 15 are fixed between the two magnetic system end plates 14 to form a rectangle. The magnetic blocks 16 and the yokes 17 are arranged alternately.

The moving magnetic system 1 of the utility model is composed of several magnetic blocks 12 and a cross yoke 13 squeezed between every two stacked magnetic blocks 12 to form a main magnetic system, and T-shaped magnetic yokes 11 are arranged at both ends of the main magnetic system. It is squeezed and fixed by the magnetic block 10, and the sorting cavity between two adjacent cross yokes 13 or the cross yoke 13 and the T-shaped yoke 11 is used as a sorting space; the magnetic blocks 12 poles on both sides of the same cross yoke 13 The polarity is the same, and the magnetic block 10 and the magnetic block 12 on both sides of the same T-shaped yoke 11 have the same polarity.

The demagnetization magnetic system 2 and the demagnetization magnetic system 3 of the present utility model are composed of several magnetic blocks 16 and the magnetic yoke 17 extruded between every two mutually stacked magnetic blocks 16, and the magnetic blocks 16 poles on the same magnetic yoke 17 both sides Sex is the same.

The reciprocating permanent magnet high-field magnetic filter is a periodic operation, and the operation steps are as follows: place the magnetic separator horizontally or vertically (the separation chamber is placed horizontally or vertically, Figure 1 is vertically placed), and the size The magnetic gathering medium slightly smaller than the sorting chamber is placed in the sorting space, and the moving magnet system is located outside the demagnetizing space composed of two demagnetizing magnet systems during operation, and then the material is fed into the sorting space through the feeding funnel, and the material can be passed through the wind Conveying (dry separation) or flowing through the magnetic accumulation medium in the form of pulp (wet separation). When the magnetic separator is placed horizontally, the material can enter from top to bottom, or from bottom to top, and non-magnetic materials pass through the magnetic accumulation medium smoothly. The gap becomes a non-magnetic product, while the magnetic minerals are adsorbed on the magnetic gathering medium under the action of the magnetic field force. After the magnetic gathering medium is saturated, the feeding is stopped, and the cylinder is operated to completely push the moving magnetic system into the two demagnetizing magnets. The demagnetization space composed of the system, the magnetic field in the sorting space is weakened, and the magnetic materials adsorbed on the magnetic accumulation medium fall off under the action of their own gravity and become magnetic products.

Claims (4)

1. A reciprocating permanent magnet high-field magnetic filter, characterized in that: it includes a moving magnet system (1), and the two ends of the moving magnet system (1) are set by cylinder I (4) and cylinder II (5). On the frame (7), there are mutually symmetrical demagnetization magnet systems I (2) and demagnetization magnet systems II (3) on both sides of the moving magnet system (1), and the demagnetization magnet system I (2) and demagnetization magnet system II ( 3) They are fixed parallel to each other on the fixed plate (6) of the frame (7). 2. The reciprocating permanent magnet high-field magnetic filter according to claim 1, characterized in that: the upper and lower sides of the moving magnet system (1) are equipped with armored plates, and the demagnetization magnetic system I (2) The upper, lower and outer sides of the demagnetization magnetic system II (3) are equipped with armored plates, the inner sides of the demagnetization magnetic system I (2) and the demagnetization magnetic system II (3) are opposite to each other at the same pole, and the moving magnetic system (1) and the Demagnetization magnetic system I (2) and demagnetization magnetic system II (3) have opposite poles. 3. The reciprocating permanent magnet high-field magnetic filter according to claim 1, characterized in that: the moving magnet system (1) includes two magnetic system end plates (8), two magnetic system end plates ( 8) Two parallel magnetic system armor plates (9) are fixed between them, and the inner side of the two magnetic system end plates (8) is equipped with an end magnetic block (10), and the inner side of the end magnetic block (10) is a T-shaped magnetic The inside of the yoke (11) and the T-shaped yoke (11) are alternately arranged with magnetic blocks (12) and cross yokes (13), and the cavity composed of magnetic blocks (12) and cross yokes (13) is used as a sorting space. The sorting space is filled with magnetic gathering medium. 4. The reciprocating permanent magnet high-field magnetic filter according to claim 1, characterized in that: the demagnetization magnetic system includes two magnetic system end plates (14), two magnetic system end plates (14) Two parallel magnetic system armor plates (15) are fixed between them, and the magnetic blocks (16) and yokes (17) between the two magnetic system end plates (8) are alternately arranged.