A slurry magnetic separation device

Abstract

The present invention discloses a slurry magnetic separation device, including a base frame, a cleaning box, an iron removal cylinder, a magnetic medium net rotatably arranged in the cleaning box, a first driving device for driving the magnetic medium net to rotate, and a water supply mechanism for sending water to the cleaning box; the iron removal cylinder is composed of two symmetrically arranged shells, and two groups of symmetrically arranged second driving devices are arranged on the outer wall of the cleaning box, and the two groups of second driving devices respectively drive the corresponding shells to move; the cleaning box is provided with a slag discharge mechanism. The iron removal cylinder of the slurry magnetic separation device provided by the present invention adopts a split structure, and the iron removal cylinder can be separated into two shells during magnetic separation and slag removal, and then the first driving device drives the magnetic medium net to rotate, so that the iron slag attached to the magnetic medium net is separated from the magnetic medium net under the action of water flow oscillation and impact and discharged with the water flow, thereby improving the cleaning and slag discharge effect of the magnetic medium net.

Description

Technical Field

[0001] The invention relates to the technical field of iron removal equipment, and in particular to a slurry magnetic separation device. Background Art

[0002] In the purification production of non-metallic minerals, iron and other magnetic impurities will affect the quality of minerals, such as the whiteness, concentrate rate, purity, etc. of kaolin. Therefore, before production, the slurry must pass through the slurry magnetic separation equipment to remove ferromagnetic impurities. The existing slurry magnetic separation equipment mainly includes electromagnetic separators and permanent magnetic separators. The permanent magnetic separator includes an iron removal cylinder and a magnetic medium net arranged in the iron removal cylinder. The slurry is de-ironized through the magnetic medium net. The mesh body of the existing magnetic medium net is generally in the shape of a mesh cake and is made of hard magnets (permanent magnets). After the magnetic medium net has been used for a period of time, iron slag will be retained on the inner wall of the iron removal cylinder, and a large amount of iron slag will be captured on the magnetic medium net. It is necessary to clean the magnetic medium net by slag removal. The existing flushing method is to use a water pump to transport cleaning water to the iron removal cylinder, and the water flow flushes the magnetic medium net, so that the iron slag falls off and is carried to the upper slag discharge pipe with the water flow for discharge. Since the hard magnet has a strong magnetic attraction, it is difficult to make the iron slag fall off by the impact of the water flow alone. There is still a part of the iron slag remaining on the magnetic medium net, and the cleaning effect is not good. It can be seen that although the permanent magnetic separator is more energy-saving and consumption-reducing than the electromagnetic separator, the magnetic medium net is not convenient for cleaning and slag removal, and there is still room for improvement and improvement. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a slurry magnetic separation device, aiming to improve the slag removal and cleaning effect of the magnetic medium net.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A slurry magnetic separation device includes a base frame, a cleaning box arranged on the base frame, an iron removal cylinder arranged in the cleaning box, a magnetic medium net rotatably arranged in the cleaning box, a first driving device for driving the magnetic medium net to rotate, and a water supply mechanism for sending water to the cleaning box; the iron removal cylinder is composed of two symmetrically arranged shells, and two symmetrically arranged second driving devices are arranged on the outer wall of the cleaning box, and the two groups of second driving devices respectively drive the corresponding shells to move so that the two shells are merged or separated; the bottom of the cleaning box is provided with a feeding mechanism connected to the bottom of the iron removal cylinder, and the top of the cleaning box is provided with a discharging mechanism connected to the top of the iron removal cylinder; the magnetic medium net is located in the inner cavity of the iron removal cylinder during iron removal; and the cleaning box is provided with a slag discharge mechanism.

[0006] The magnetic medium network includes two side plates arranged opposite to each other, a plurality of thermosensitive soft magnetic rods arranged between the two side plates, and a rotating shaft arranged outside the two side plates. The two ends of each thermosensitive soft magnetic rod are respectively connected to the two side plates. One end of the rotating shaft is fixedly connected to the corresponding side plate, and the other end is rotatably connected to the cleaning box through a receiving seat.

[0007] The water supply mechanism comprises a water tank, a heater and a water pump. The water pump is used to deliver the hot water in the water tank to the cleaning tank. The heater is used to heat the water in the water tank and make the water temperature higher than the Curie temperature of the thermistor soft magnetic rod.

[0008] The first driving device includes a first driving cylinder arranged on the outer wall of the cleaning box, and a first rack sleeved and fixedly connected to the piston rod of the first driving cylinder; a first gear is sleeved on any one of the rotating shafts, and the first gear is transmission-connected to the first rack.

[0009] Each group of the second driving device includes a bearing seat arranged on the outer wall of the cleaning box, an outer shaft arranged in the bearing seat, the outer shaft is provided with an axial through hole with a polygonal cross-section, and an inner shaft matching the shape of the axial through hole is inserted into each axial through hole; a mounting frame is provided on the outer wall of the cleaning box, and a second driving cylinder is provided on the mounting frame, and one end of each inner shaft is fixedly connected to the corresponding shell; the piston rod end of the second driving cylinder is connected to the other end of the inner shaft through a rotating joint; the cleaning box is also provided with a third driving device for driving the outer shaft to rotate.

[0010] The third driving device includes a third driving cylinder and a second rack sleeved and fixedly connected to a piston rod of the third driving cylinder; a second gear is sleeved on the outer shaft, and the second rack is transmission-connected to the second gear.

[0011] The rotary joint comprises a connection seat, a plane bearing is arranged at the bottom of the connection seat, a core shaft is arranged in the plane bearing and extends out of the upper surface of the connection seat, and an annular flange is arranged at the bottom end of the core shaft to abut against the bottom of the plane bearing.

[0012] The feeding mechanism includes a feeding pipe vertically penetrating the bottom of the cleaning box and a feeding valve arranged on the feeding pipe, and the feeding pipe is connected with the bottom of the iron removal cylinder; the discharging mechanism includes a discharging pipe vertically penetrating the top of the cleaning box and a discharging valve arranged on the discharging pipe; the discharging pipe is connected with the top of the iron removal cylinder.

[0013] The slag discharge mechanism includes a first slag discharge pipe connected to the feed pipe, a first slag discharge valve arranged on the first slag discharge pipe, a plurality of second slag discharge pipes connected to the bottom surface of the cleaning box, a second slag discharge valve arranged on the second slag discharge pipe, a plurality of groups of fourth driving cylinders fixed to the bottom of the cleaning box, and a hard magnet arranged at the end of the piston of the fourth driving cylinder; the hard magnet is used to magnetically attract iron filings deposited at the bottom of the cleaning box, and each of the fourth driving cylinders is used to drive the hard magnet to move back and forth toward the corresponding second slag discharge pipe so that the iron filings fall into the second slag discharge pipe.

[0014] The slurry magnetic separation device also includes a return mechanism, which includes a return pipe connected to the feed pipe, and a return valve is provided on the return pipe.

[0015] Beneficial effects:

[0016] Compared with the prior art, the iron removal cylinder of the slurry magnetic separation device provided by the present invention adopts a split structure. The iron removal cylinder can be separated into two shells during magnetic separation and slag removal. Then the first driving device drives the magnetic medium net to rotate, so that the magnetic medium net continuously beats the water surface and flips in the water, causing the iron slag attached to the magnetic medium net to separate from the magnetic medium net under the action of water flow oscillation and impact and be discharged with the water flow, thereby improving the cleaning and slag removal effect of the magnetic medium net and reducing the residual amount of iron slag on the magnetic medium net. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the slurry magnetic separation device provided by the present invention.

[0018] Figure 2 This is a right side view of the slurry magnetic separation device provided by the present invention.

[0019] Figure 3 This is a top view of the slurry magnetic separation device provided by the present invention.

[0020] Figure 4 A schematic diagram of the structure of the slurry magnetic separation device provided by the present invention during magnetic separation and iron removal.

[0021] Figure 5 A schematic diagram of the structure of the slurry magnetic separation device provided by the present invention during cleaning and slag removal.

[0022] Figure 6 A schematic diagram of the structure of the magnetic medium network in the slurry magnetic separation device provided by the present invention.

[0023] Figure 7 for Figure 6 Sectional view of AA.

[0024] Figure 8 This is a schematic structural diagram of a rotary joint in the slurry magnetic separation device provided by the present invention.

[0025] Main component symbol description: 1- chassis, 11- cleaning box, 2- iron removal cylinder, 3- magnetic medium net, 4- first driving device, 5- water supply mechanism, 21- shell, 6- second driving device, 71- feeding mechanism, 72- discharging mechanism, 8- slag discharge mechanism, 31- side plate, 32- thermal soft magnetic rod, 33- rotating shaft, 51- water tank, 52- heater, 53- water pump, 54- temperature sensor, 41- first driving cylinder, 42- first rack, 43- first gear, 61- bearing seat, 62- outer shaft, 63- inner shaft, 64- Mounting frame, 65-second driving cylinder, 66-rotating joint, 67-third driving device, 661-connecting seat, 662-plane bearing, 663-core shaft, 664-annular flange, 671-third driving cylinder, 672-second rack, 673-second gear, 711-feed pipe, 712-feed valve, 721-discharge pipe, 722-discharge valve, 73-sealing ring, 81-slag discharge pipe, 82-slag discharge valve, 83-fourth driving cylinder, 84-hard magnet, 9-return mechanism, 91-return pipe, 92-return valve. DETAILED DESCRIPTION

[0026] The present invention provides a slurry magnetic separation device. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the scope of protection of the present invention.

[0027] See also Figure 1-Figure 8 The present invention provides a slurry magnetic separation device, comprising a base frame 1, a cleaning box 11 arranged on the base frame 1, an iron removal cylinder 2 arranged in the cleaning box 11, a magnetic medium net 3 rotatably arranged in the cleaning box 11, a first driving device 4 for driving the magnetic medium net 3 to rotate, and a water supply mechanism 5 for sending water to the cleaning box 11; the iron removal cylinder 2 is composed of two symmetrically arranged shells 21, and two symmetrically arranged second driving devices 6 are arranged on the outer wall of the cleaning box 11, and the two groups of second driving devices 6 respectively drive the corresponding shells 21 to move so that the two shells 21 are merged or separated; the bottom of the cleaning box 11 is provided with a feeding mechanism 71 connected to the bottom of the iron removal cylinder 2, and the top of the cleaning box 11 is provided with a discharging mechanism 72 connected to the top of the iron removal cylinder 2; the magnetic medium net 3 is located in the inner cavity of the iron removal cylinder 2 during iron removal; the cleaning box 11 is provided with a slag discharge mechanism 8.

[0028] The working principle is briefly described as follows: during magnetic separation and iron removal, the magnetic medium net 3 is in a vertical state, and the two groups of the second driving devices 6 drive the corresponding shells 21 to approach each other, so that the two shells 21 are combined to form the iron removal cylinder 2 and the magnetic medium net 3 is wrapped in the inner cavity of the iron removal cylinder 2, and the bottom of the iron removal cylinder 2 is sealed with the feeding mechanism 71, and the top of the iron removal cylinder 2 is sealed with the discharging mechanism 72; the slurry to be de-ironized enters the de-iron removal cylinder 2 through the feeding mechanism 71, and then passes through the magnetic medium net 3 from bottom to top, so that the iron slag in the slurry is captured by the magnetic medium net 3 to achieve iron removal, and finally discharged through the discharging mechanism 72. After the iron removal cylinder 2 has been used for a period of time, iron slag will be retained on the inner wall of the iron removal cylinder 2, and a large amount of iron slag will also be captured on the magnetic medium net 3. It is necessary to clean the iron removal cylinder 2 and the magnetic medium net 3 to remove slag; when cleaning and removing slag, the two groups of the second driving devices 6 drive the corresponding shells 21 to move away from each other, so that the two shells 21 are separated from each other, the feeding mechanism 71 and the discharging mechanism 72 are closed, and the water supply mechanism 5 pours cleaning water into the cleaning box 11. The water level in the cleaning box 11 should be higher than half the height of the cleaning box 11; then the first driving device 4 drives the magnetic medium net 3 to rotate, driving the magnetic medium net 3 to continuously beat the water surface and flip in the water, so that the water in the cleaning box 11 forms high-frequency oscillations, causing the iron slag attached to the magnetic medium net 3 to separate from the magnetic medium net 3 under the action of water flow oscillation and impact, and then the iron slag sinks to the bottom of the cleaning box 11 due to gravity, and finally the iron slag and cleaning water in the cleaning box 11 are discharged through the slag removal mechanism 8.

[0029] Compared with the prior art, the iron removal cylinder of the slurry magnetic separation device provided by the present invention adopts a split structure. The iron removal cylinder 2 can be separated into two shells 21 during magnetic separation and slag removal. Then the first driving device 4 drives the magnetic medium net 3 to rotate, so that the magnetic medium net 3 continuously beats the water surface and flips in the water, causing the iron slag attached to the magnetic medium net 3 to separate from the magnetic medium net under the action of water flow oscillation and impact and be discharged with the water flow, thereby improving the cleaning and slag removal effect of the magnetic medium net 3 and reducing the residual amount of iron slag on the magnetic medium net.

[0030] For details, please refer to Figure 2 , 6 7, the magnetic medium net 3 comprises two side plates 31 arranged opposite to each other, a plurality of thermosensitive soft magnetic rods 32 arranged between the two side plates 31, and a rotating shaft 33 arranged outside the two side plates 31, the two ends of each thermosensitive soft magnetic rod 32 are respectively connected to the two side plates 31, one end of the rotating shaft 33 is fixedly connected to the corresponding side plate 31, and the other end is rotatably connected to the cleaning box 11 through a receiving seat. The thermosensitive soft magnetic rods in the magnetic medium net 3 have a simple structure and produce less resistance to the slurry, so the processing speed of the slurry can be increased, and the production efficiency can be improved.

[0031] It should be understood that the thermosensitive soft magnetic rod 32 is mainly composed of thermosensitive metal materials and thermosensitive ferrites. The ferromagnetic material in the thermosensitive soft magnetic rod 32 will lose its ferromagnetism and become paramagnetic when the temperature is higher than a certain temperature (the transition temperature is the Curie temperature point). The ferromagnetic material in the thermosensitive soft magnetic rod 32 will regain its ferromagnetism when the temperature is lower than a certain temperature (the transition temperature is the Curie temperature point). When the thermosensitive soft magnetic rod 32 is ferromagnetic, the thermosensitive soft magnetic rod 32 can capture magnetic impurities such as iron filings in the slurry. When the thermosensitive soft magnetic rod 32 loses its ferromagnetism, the thermosensitive soft magnetic rod 32 is demagnetized and no longer produces a magnetic attraction to the iron filings. Those skilled in the art can adjust the proportion of the materials in the thermosensitive soft magnetic rod 32 to set the Curie temperature point of the thermosensitive soft magnetic rod 32.

[0032] After the iron removal cylinder 2 has been used for a period of time, iron slag will be retained on the inner wall of the iron removal cylinder 2, and a large amount of iron slag will also be captured on the magnetic medium net 3. The inner cavity of the iron removal cylinder 2 and the magnetic medium net 3 are cleaned by the water supply mechanism 5. The water supply mechanism 5 sends hot water to the iron removal cylinder 2. After the hot water enters the iron removal cylinder 2, it realizes heat transfer with the thermosensitive soft magnetic rod 32 on the magnetic medium net 3. Since the temperature of the hot water exceeds the preset temperature value, that is, reaches the Curie temperature point of the thermosensitive soft magnetic rod 32, the thermosensitive soft magnetic rod 32 loses its magnetic permeability, thereby eliminating the magnetic attraction of the iron slag attached to its surface; thereby making the iron slag fall off more easily and be discharged with the water flow. When the cleaning is completed, the temperature of the thermosensitive soft magnetic rod 32 decreases to below its Curie temperature point, and the ferromagnetism is restored.

[0033] For details, see Figure 6 and 7 As shown, the thermosensitive soft magnetic rods 32 are arranged in rows, and the distance between two adjacent rows of magnetic rods is equal; any two adjacent thermosensitive soft magnetic rods 32 in each row are arranged at the same center distance L1. Through this arrangement, the slurry will pass through several rows of magnetic rods in sequence when moving upward, and the magnetic rods in each row can play a role in removing iron, and the iron removal effect is guaranteed by setting a certain number of rows of magnetic rods.

[0034] For further information, see Figure 6 and 7 As shown, the thermosensitive soft magnetic rods 32 are arranged in rows, and any two adjacent rows of thermosensitive soft magnetic rods 32 are staggered in a direction that is horizontally perpendicular to the length of the thermosensitive soft magnetic rods 32. Through the staggered arrangement, the slurry has a greater chance of contacting the thermosensitive soft magnetic rods 32 in the next row after passing through the interval of the thermosensitive soft magnetic rods 32 in a row, thereby further improving the iron removal effect.

[0035] Preferably, see Figure 6 and 7As shown, any two adjacent rows of thermosensitive soft magnetic rods 32 are arranged in a staggered manner according to the half center distance (i.e. 0.5L1) in a direction horizontally perpendicular to the length of the thermosensitive soft magnetic rods 32. This arrangement actually makes the thermosensitive soft magnetic rods 32 arranged in rows and columns at the same time. This arrangement maximizes the chance that the slurry will contact the thermosensitive soft magnetic rods 32 in the next row after passing through the interval between the thermosensitive soft magnetic rods 32 in a row, and also makes the arrangement of the thermosensitive soft magnetic rods 32 simpler and convenient for the production of the magnetic medium network 3.

[0036] Preferably, each of the thermosensitive soft magnetic rods 32 is a round rod. The diameters of the round rods are equal. Compared with magnetic rods of other shapes, the round rods have less resistance to the slurry, thereby ensuring the normal flow rate of the slurry.

[0037] For details, please refer to Figure 1 and 2 The water supply mechanism 5 includes a water tank 51, a heater 52, and a water pump 53. Before cleaning, the heater 52 heats the water tank 51 and heats the water to a preset temperature, which is higher than the Curie temperature of the thermistor soft magnetic rod 32; then the water pump 53 sends the hot water in the water tank 51 to the cleaning tank 11.

[0038] Preferably, see Figure 2 As shown, a temperature sensor 54 is provided in the water tank 51, and the user can know whether the water temperature reaches the preset temperature through the temperature sensor 54. The heater 52 preferably adopts an electric heating tube, which has high heating efficiency and is easy to purchase.

[0039] Preferably, see Figure 1 and 2 , the first driving device 4 includes a first driving cylinder 41 arranged on the outer wall of the cleaning box 11, and a first rack 42 fixedly connected to the piston rod of the first driving cylinder 41; a first gear 43 is arranged on any of the rotating shafts 33, and the first gear 43 is connected to the first rack 42 in a transmission manner. When working, the first driving cylinder 41 drives the first rack 42 to move back and forth horizontally, thereby driving the first gear 43 to rotate, and then causing the magnetic medium net 3 to make a reciprocating flipping motion. Compared with driving the rotating shaft 33 to rotate by a motor, using a driving cylinder as a driving source is more energy-saving and easier to control by a control system. Here, it is set that when the piston rod of the first driving cylinder 41 is fully extended, the magnetic medium net 3 is in a vertical initial state. It can be understood that when the magnetic medium net 3 is magnetically separated and iron is removed, the magnetic medium net 3 is in a vertical initial state, and the piston rod of the first driving cylinder 41 is fully extended.

[0040] Preferably, see Figure 1 , 45. Each group of the second driving device 6 includes a bearing seat 61 arranged on the outer wall of the cleaning box 11, an outer shaft 62 arranged in the bearing seat 61, the outer shaft 62 is provided with an axial through hole with a polygonal cross section, and an inner shaft 63 adapted to the shape of the axial through hole is inserted into each axial through hole; a mounting frame 64 is provided on the outer wall of the cleaning box 11, and a second driving cylinder 65 is provided on the mounting frame 64, and one end of each inner shaft 63 is fixedly connected to the corresponding shell 21; the piston rod end of the second driving cylinder 65 is connected to the other end of the inner shaft 63 through a rotary joint 66; the cleaning box 11 is also provided with a third driving device 67 for driving the outer shaft 62 to rotate.

[0041] Each group of the inner shaft 63 and the corresponding outer shaft 62 are arranged horizontally, and are arranged on one side of the magnetic medium net 3. The inner shaft 63 is inserted into the axial through hole of the outer shaft 62 to form a clearance fit; since the cross-sections of the axial through hole and the inner shaft 63 are polygonal, the inner shaft 63 will not rotate relative to the outer shaft 62, that is, the inner shaft 63 rotates synchronously with the outer shaft 62. In actual operation, the second driving cylinder 65 drives the inner shaft 63 to move axially relative to the outer shaft 62, thereby driving the shell 21 to merge or separate, and the third driving device 67 drives the outer shaft 62 to rotate, and the inner shaft 63 rotates with the outer shaft 62, so that the shell 21 is turned over in the cleaning box 11, and the iron slag attached to the inner wall of the shell 21 is caused to separate from the shell 21 under the action of the water flow, thereby realizing the cleaning and slag discharge of the shell 21.

[0042] Further, a simple structure of the rotary joint 66 is provided here (see Figure 8 As shown), the rotary joint 66 includes a connecting seat 661, a plane bearing 662 is arranged at the bottom of the connecting seat 661, a core shaft 663 is arranged in the plane bearing 662, and the core shaft 663 extends out of the upper surface of the connecting seat 661, and an annular flange 664 is arranged at the bottom of the core shaft 663, and the annular flange 664 is abutted against the bottom of the plane bearing 662; the piston rod end of the second driving cylinder 65 is connected to the core shaft 663; the connecting seat 661 is connected to the inner shaft 63 through a flange 665.

[0043] For the convenience of processing, the axial through hole is a square through hole, and the cross section of the inner shaft 63 is a square, that is, the inner shaft 63 is actually a square rod and can be inserted into the square through hole to form a clearance fit.

[0044] Preferably, the piston rod end of the second driving cylinder 65 is connected to the free end of the core shaft 663 via a universal joint (not shown in the figure). The advantage of such a configuration is that even if the coaxiality of the piston rod of the second driving cylinder 65 and the core shaft 663 is reduced, since the two are hinged via the universal joint, and there is no rigid collision between the piston rod and the core shaft 663, normal operation can still be performed.

[0045] As one implementation, see Figure 1 and 2 , the third driving device 67 includes a third driving cylinder 671, a second rack 672 mounted on the piston rod of the third driving cylinder 671; a second gear 673 is mounted on the outer shaft 62, and the second rack 672 and the second gear 673 are connected in transmission. When cleaning and discharging slag, the third driving cylinder 671 drives the second rack 672 to move back and forth horizontally, thereby driving the second gear 673 to rotate, and then causing the shell 21 to perform reciprocating flipping motion. Compared with the rotation of the rotating shaft 33 driven by the motor, using the third driving cylinder 671 as the driving source is more energy-saving and easier to control by the control system. Here, it is set that when the piston rod of the third driving cylinder 671 is fully retracted, the shell 21 is in a vertical initial state. It can be understood that when the shell 21 is reset and merged to form the iron removal cylinder 2, the piston rod of the third driving cylinder 671 is fully retracted.

[0046] For details, please refer to Figure 2 , 4 , 5. The feeding mechanism 71 includes a feeding pipe 711 vertically penetrating the bottom of the cleaning box 11 and a feeding valve 712 arranged on the feeding pipe 711; the feeding pipe 711 is connected to the bottom of the iron removal cylinder 2; the feeding valve 712 is opened, and the slurry is transported to the iron removal cylinder 2 under the action of the feeding pump. The discharging mechanism 72 includes a discharging pipe 721 vertically penetrating the top of the cleaning box 11 and a discharging valve 722 arranged on the discharging pipe 721; the discharging pipe 721 is connected to the top of the iron removal cylinder 2. The finished slurry is filtered by the magnetic medium net 3 and discharged through the discharging pipe 721. It should be noted that the connection between the feeding pipe 711 and the iron removal cylinder 2 and the connection between the discharging pipe 721 and the iron removal cylinder 2 are provided with a sealing ring 73. When the two shells 21 are combined, the iron removal cylinder 2 is sealedly connected with the feeding pipe 711 and the discharging pipe 721.

[0047] For further information, see Figure 3The slag discharge mechanism 8 includes a first slag discharge pipe 81 connected to the feed pipe 711, a first slag discharge valve 82 arranged on the slag discharge pipe 81, a plurality of second slag discharge pipes 85 connected to the bottom surface of the cleaning box, a second slag discharge valve 86 arranged on the second slag discharge pipe, a plurality of fourth driving cylinders 83 fixed to the bottom of the cleaning box 11, and a hard magnet 84 arranged at the piston end of the fourth driving cylinder 83; the hard magnet 84 is used to magnetically attract iron filings deposited at the bottom of the cleaning box 11, each fourth driving cylinder corresponds to a second slag discharge pipe 85, and the fourth driving cylinder 83 is used to drive the hard magnet 84 to move back and forth toward the corresponding second slag discharge pipe 85, so that the iron filings fall into the second slag discharge pipe 85. After the magnetic medium net 3 and the shell 21 are cleaned with cleaning water, the iron slag falls off and settles to the bottom of the cleaning box 11. The fourth driving cylinder 83 of the slag discharge mechanism 8 drives the hard magnet 84 to move, thereby adsorbing the iron slag located at the corners and moving it to the second slag discharge pipe, reducing the iron slag remaining in the cleaning box 11.

[0048] Due to iron removal before slagging, please refer to Figure 2 There is a certain amount of residual material in the iron removal cylinder 2, and the slurry magnetic separation device also includes a return mechanism 9, which includes a return pipe 91 connected to the feed pipe 711, and a return valve 92 is provided on the return pipe 91. By opening the return valve 92, the residual material is returned to the slurry pool to prevent waste of residual material.

[0049] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A slurry magnetic separation device, characterized in that: The invention comprises a base frame, a cleaning box arranged on the base frame, an iron removal cylinder arranged in the cleaning box, a magnetic medium net rotatably arranged in the cleaning box, a first driving device for driving the magnetic medium net to rotate, and a water supply mechanism for sending water to the cleaning box; the iron removal cylinder is composed of two symmetrically arranged shells, and two groups of symmetrically arranged second driving devices are arranged on the outer wall of the cleaning box, and the two groups of second driving devices respectively drive the corresponding shells to move so that the two shells are merged or separated; the bottom of the cleaning box is provided with a feeding mechanism connected to the bottom of the iron removal cylinder, and the top of the cleaning box is provided with a discharging mechanism connected to the top of the iron removal cylinder; the magnetic medium net is located at The inner cavity of the iron removal cylinder; the cleaning box is provided with a slag discharge mechanism; the magnetic medium network includes two side plates arranged opposite to each other, a plurality of thermosensitive soft magnetic rods arranged between the two side plates, and a rotating shaft arranged outside the two side plates, the two ends of each thermosensitive soft magnetic rod are respectively connected to the two side plates, one end of the rotating shaft is fixedly connected to the corresponding side plate, and the other end is rotatably connected to the cleaning box through a receiving seat; the feeding mechanism includes a feeding pipe vertically penetrating the bottom of the cleaning box and a feeding valve arranged on the feeding pipe, and the feeding pipe is connected to the bottom of the iron removal cylinder; the discharging mechanism includes a discharging pipe vertically penetrating the top of the cleaning box and a discharging valve arranged on the discharging pipe; The discharge pipe is communicated with the top of the iron removal cylinder.

2. The slurry magnetic separation device according to claim 1, characterized in that: The water supply mechanism comprises a water tank, a heater and a water pump. The water pump is used to deliver the hot water in the water tank to the cleaning tank. The heater is used to heat the water in the water tank and make the water temperature higher than the Curie temperature of the thermistor soft magnetic rod.

3. The slurry magnetic separation device according to claim 1, characterized in that: The first driving device includes a first driving cylinder arranged on the outer wall of the cleaning box, and a first rack sleeved and fixedly connected to the piston rod of the first driving cylinder; a first gear is sleeved on any one of the rotating shafts, and the first gear is transmission-connected to the first rack.

4. The slurry magnetic separation device according to claim 1, characterized in that: Each group of the second driving device includes a bearing seat arranged on the outer wall of the cleaning box, an outer shaft arranged in the bearing seat, the outer shaft is provided with an axial through hole with a polygonal cross-section, and an inner shaft matching the shape of the axial through hole is inserted into each axial through hole; a mounting frame is provided on the outer wall of the cleaning box, and a second driving cylinder is provided on the mounting frame, and one end of each inner shaft is fixedly connected to the corresponding shell; the piston rod end of the second driving cylinder is connected to the other end of the inner shaft through a rotating joint; the cleaning box is also provided with a third driving device for driving the outer shaft to rotate.

5. The slurry magnetic separation device according to claim 4, characterized in that: The third driving device includes a third driving cylinder and a second rack sleeved and fixedly connected to a piston rod of the third driving cylinder; a second gear is sleeved on the outer shaft, and the second rack is transmission-connected to the second gear.

6. The slurry magnetic separation device according to claim 4, characterized in that: The rotary joint comprises a connection seat, a plane bearing is arranged at the bottom of the connection seat, a core shaft is arranged in the plane bearing and extends out of the upper surface of the connection seat, and an annular flange is arranged at the bottom end of the core shaft to abut against the bottom of the plane bearing.

7. The slurry magnetic separation device according to claim 1, characterized in that: The slag discharge mechanism includes a first slag discharge pipe connected to the feed pipe, a first slag discharge valve arranged on the first slag discharge pipe, a plurality of second slag discharge pipes connected to the bottom surface of the cleaning box, a second slag discharge valve arranged on the second slag discharge pipe, a plurality of groups of fourth driving cylinders fixed to the bottom of the cleaning box, and a hard magnet arranged at the end of the piston of the fourth driving cylinder; the hard magnet is used to magnetically attract iron filings deposited at the bottom of the cleaning box, and each of the fourth driving cylinders is used to drive the hard magnet to move back and forth toward the corresponding second slag discharge pipe so that the iron filings fall into the second slag discharge pipe.

8. The slurry magnetic separation device according to claim 1, characterized in that: It also includes a material return mechanism, which includes a material return pipe connected to the feed pipe, and a material return valve is provided on the material return pipe.

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