CN112090588A

CN112090588A - Slurry magnetic separation device

Info

Publication number: CN112090588A
Application number: CN202010973447.2A
Authority: CN
Inventors: 梁永权; 梁永根; 甘仲棠
Original assignee: Foshan Gaoming Xingnuo Machinery Equipment Co ltd
Current assignee: Foshan Gaoming Xingnuo Machinery Equipment Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2020-12-18

Abstract

The invention discloses a slurry magnetic separation device which comprises an underframe, a cleaning box, an iron removing cylinder, a magnetic medium net, a first driving device and a water supply mechanism, wherein the magnetic medium net is rotatably arranged in the cleaning box; the iron removing cylinder consists of two symmetrically arranged shells, 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; and a slag discharging mechanism is arranged on the cleaning box. The iron removing cylinder of the slurry magnetic separation device provided by the invention adopts a split structure, the iron removing cylinder can be separated into two shells during magnetic separation deslagging, and then the first driving device drives the magnetic medium net to rotate, so that 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 is discharged along with the water flow, and the cleaning and deslagging effects of the magnetic medium net are improved.

Description

Slurry magnetic separation device

Technical Field

The invention relates to the technical field of iron removal equipment, in particular to a slurry magnetic separation device.

Background

In the purification production of non-metallic ores, iron and other magnetic impurities can affect the quality of the ore, such as: whiteness, concentrate yield, purity, etc. of kaolin. Thus. Before production, the slurry is subjected to magnetic separation equipment for removing ferromagnetic impurities. The existing slurry magnetic separation equipment mainly comprises an electromagnetic separator and a permanent magnetic separator, wherein the permanent magnetic separator comprises an iron removing cylinder and a magnetic medium net arranged in the iron removing cylinder, slurry is removed iron through the magnetic medium net, the net body of the existing magnetic medium net is generally in a net wire cake shape and is made of hard magnets (permanent magnets), when the magnetic medium net is used for a period of time, iron slag can be hung on the inner wall of the iron removing cylinder, a large amount of iron slag is captured on the magnetic medium net, the magnetic medium net needs to be subjected to slag discharge and cleaning, the existing cleaning mode is that cleaning water is conveyed into the iron removing cylinder through a water pump, water flows wash the magnetic medium net, the iron slag falls off and is brought to an upper slag discharge pipe along with the water flow to be discharged, and the hard magnets have strong magnetic attraction force, so that the iron slag cannot fall off due to the impact force of the water flow alone, a part of the iron slag still remains on the magnetic medium net, and the cleaning effect is poor. Therefore, although the permanent magnetic separator saves more energy and reduces the consumption than the electromagnetic separator, the magnetic medium net is not convenient to clean and discharge slag, and needs to be improved and enhanced.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a slurry magnetic separation device, aiming at improving the slag discharging and cleaning effect of a magnetic medium net.

In order to achieve the purpose, the invention adopts the following technical scheme:

a slurry magnetic separation device comprises an underframe, a cleaning box arranged on the underframe, a de-ironing cylinder arranged in the cleaning box, a magnetic medium net rotatably arranged in the cleaning box, a first driving device used for driving the magnetic medium net to rotate, and a water supply mechanism used for supplying water to the cleaning box; the iron removing cylinder consists of two symmetrically arranged shells, 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 as to enable the two shells to be combined or separated; the bottom of the cleaning box is provided with a feeding mechanism communicated with the bottom of the iron removing cylinder, and the top of the cleaning box is provided with a discharging mechanism communicated with the top of the iron removing cylinder; the magnetic medium net is positioned in the inner cavity of the iron removing cylinder during iron removal; and a slag discharging mechanism is arranged on the cleaning box.

The magnetic medium net comprises two opposite side plates, a plurality of thermosensitive soft magnetic rods and a rotating shaft, wherein the thermosensitive soft magnetic rods are arranged between the two side plates, the rotating shaft is arranged on the outer side of the two side plates, two ends of each thermosensitive soft magnetic rod are respectively connected with the two side plates, one end of the rotating shaft is fixedly connected with the corresponding side plate, and the other end of the rotating shaft is rotatably connected with the cleaning box through a bearing seat.

The water supply mechanism comprises a water tank, a heater and a water pump, the water pump is used for conveying hot water in the water tank to the cleaning tank, and the heater is used for heating the water in the water tank and enabling the temperature of the water to be higher than the Curie temperature of the heat-sensitive soft magnetic rod.

The first driving device comprises a first driving cylinder arranged on the outer wall of the cleaning box, and a first rack fixedly connected to a piston rod of the first driving cylinder in a sleeved mode; any one the pivot is overlapped and is equipped with a first gear, first gear is connected with first rack transmission.

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

The third driving device comprises a third driving cylinder and a second rack fixedly sleeved on a piston rod of the third driving cylinder; the outer axle is sleeved with a second gear, and the second rack is in transmission connection with the second gear.

The rotary joint comprises a connecting seat, a plane bearing is arranged at the bottom of the connecting seat, a mandrel is arranged in the plane bearing and extends out of the upper surface of the connecting seat, and an annular flange is arranged at the bottom end of the mandrel and abuts against the bottom of the plane bearing.

The feeding mechanism comprises a feeding pipe vertically penetrating through the bottom of the cleaning box and a feeding valve arranged on the feeding pipe, and the feeding pipe is communicated with the bottom of the iron removing cylinder; the discharging mechanism comprises a discharging pipe vertically penetrating through 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 removing barrel.

The slag discharging mechanism comprises a first slag discharging pipe connected with the feeding pipe, a first slag discharging valve arranged on the first slag discharging pipe, a plurality of second slag discharging pipes connected with the bottom surface of the cleaning box, a second slag discharging valve arranged on the second slag discharging pipe, a plurality of groups of fourth driving cylinders fixed at the bottom of the cleaning box and a hard magnet arranged at the end part of a piston of each fourth driving cylinder; the hard magnet is used for magnetically attracting scrap iron deposited at the bottom of the cleaning box, and each fourth driving cylinder is used for driving the hard magnet to reciprocate towards the corresponding second slag discharging pipe, so that the scrap iron falls into the second slag discharging pipe.

The slurry magnetic separation device further comprises a material returning mechanism, the material returning mechanism comprises a material returning pipe connected with the feeding pipe, and a material returning valve is arranged on the material returning pipe.

Has the advantages that:

compared with the prior art, the iron removing cylinder of the slurry magnetic separation device provided by the invention adopts a split structure, the iron removing cylinder can be separated into two shells during magnetic separation deslagging, and then the first driving device drives the magnetic medium net to rotate, so that the magnetic medium net continuously flaps the water surface and turns over in the water, iron slag attached to the magnetic medium net is promoted to be separated from the magnetic medium net under the action of water flow oscillation and impact and to be discharged along with the water flow, the cleaning deslagging effect of the magnetic medium net is improved, and the residual quantity of the iron slag on the magnetic medium net is reduced.

Drawings

FIG. 1 is a perspective view of a magnetic separation device for slurry according to the present invention.

FIG. 2 is a right side view of the magnetic separation device for slurry provided by the present invention.

FIG. 3 is a top view of a magnetic separation apparatus for slurry according to the present invention.

FIG. 4 is a schematic structural diagram of the magnetic separation device for slurry provided by the invention during iron removal by magnetic separation.

FIG. 5 is a schematic structural diagram of the magnetic separation device for slurry provided by the invention when cleaning and deslagging.

FIG. 6 is a schematic structural diagram of a magnetic medium net in the slurry magnetic separation device provided by the present invention.

Fig. 7 is a cross-sectional view a-a of fig. 6.

FIG. 8 is a schematic structural view of a rotary joint in the slurry magnetic separation device provided by the present invention.

Description of the main element symbols: 1-underframe, 11-cleaning box, 2-de-ironing 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-deslagging mechanism, 31-side plate, 32-thermosensitive 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 rack, 65-second driving cylinder, 66-rotary joint, 67-third driving device, 661-connecting seat, 662-plane bearing, 663-mandrel, 664-annular flange, 671-third driving cylinder, 672-second rack, 673-second gear, 711-feeding pipe, 712-feeding valve, 721-discharging pipe, 722-discharging valve, 73-sealing ring, 81-slag discharging pipe, 82-slag discharging valve, 83-fourth driving cylinder, 84-hard magnet, 9-material returning mechanism, 91-material returning pipe and 92-material returning valve.

Detailed Description

The invention provides a slurry magnetic separation device, which is further described in detail below by referring to the attached drawings and embodiments in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.

Referring to fig. 1-8, the present invention provides a slurry magnetic separation device, which includes an underframe 1, a cleaning tank 11 disposed on the underframe 1, an iron removing cylinder 2 disposed in the cleaning tank 11, a magnetic medium net 3 rotatably disposed in the cleaning tank 11, a first driving device 4 for driving the magnetic medium net 3 to rotate, and a water supply mechanism 5 for supplying water to the cleaning tank 11; the iron removing cylinder 2 consists of two symmetrically arranged shells 21, two groups of 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 as to combine or separate the two shells 21; the bottom of the cleaning box 11 is provided with a feeding mechanism 71 communicated with the bottom of the iron removing cylinder 2, and the top of the cleaning box 11 is provided with a discharging mechanism 72 communicated with the top of the iron removing cylinder 2; the magnetic medium net 3 is positioned in the inner cavity of the iron removing cylinder 2 during iron removal; and a slag discharging mechanism 8 is arranged on the cleaning box 11.

The following brief description is made on the working principle: when iron is removed by magnetic separation, the magnetic medium net 3 is in a vertical state, the two groups of 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 removing cylinder 2, the magnetic medium net 3 is wrapped in the inner cavity of the iron removing cylinder 2, the bottom of the iron removing cylinder 2 is hermetically connected with the feeding mechanism 71, and the top of the iron removing cylinder 2 is hermetically connected with the discharging mechanism 72; the slurry to be deironized enters the deironing cylinder 2 through the feeding mechanism 71, then passes through the magnetic medium net 3 from bottom to top, so that iron slag in the slurry is captured by the magnetic medium net 3 to realize deironing, and finally is discharged through the discharging mechanism 72. After the iron removing cylinder 2 is used for a period of time, iron slag is hung on the inner wall of the iron removing cylinder 2, a large amount of iron slag is captured on the magnetic medium net 3, and the iron removing cylinder 2 and the magnetic medium net 3 need to be cleaned and discharged; when the slag is removed in the cleaning process, the two groups of second driving devices 6 drive the corresponding shells 21 to be 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, the water supply mechanism 5 injects cleaning water into the cleaning tank 11, and the water level in the cleaning tank 11 is higher than half of the height of the cleaning tank 11; then the first driving device 4 drives the magnetic medium net 3 to rotate, drives the magnetic medium net 3 to continuously flap the water surface and turn over in the water, so that the water in the cleaning box 11 forms high-frequency oscillation, iron slag attached to the magnetic medium net 3 is promoted to be separated from the magnetic medium net 3 under the action of water flow oscillation and impact, then the iron slag sinks to the bottom surface of the cleaning box 11 under the action of gravity, and finally the iron slag and the cleaning water in the cleaning box 11 are discharged through the slag discharging mechanism 8.

Compared with the prior art, the iron removing cylinder of the slurry magnetic separation device provided by the invention adopts a split structure, the iron removing cylinder 2 can be separated into two shells 21 during magnetic separation deslagging, then the first driving device 4 drives the magnetic medium net 3 to rotate, so that the magnetic medium net 3 continuously flaps the water surface and turns over in the water, iron slag attached to the magnetic medium net 3 is enabled to be separated from the magnetic medium net under the action of water flow oscillation and impact and to be discharged along with the water flow, the cleaning and deslagging effects of the magnetic medium net 3 are improved, and the residual quantity of the iron slag on the magnetic medium net is reduced.

Specifically, referring to fig. 2, 6 and 7, the magnetic medium net 3 includes two side plates 31 disposed opposite to each other, a plurality of thermosensitive soft magnetic rods 32 disposed between the two side plates 31, and a rotating shaft 33 disposed outside the two side plates 31, 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 tank 11 through a receiving seat. The thermosensitive soft magnetic rods in the magnetic medium net 3 are simple in structure and small in resistance to slurry, so that the processing speed of the slurry can be increased, and the production efficiency is improved.

It should be understood that the heat-sensitive soft magnetic rod 32 is mainly composed of a heat-sensitive metal material and a heat-sensitive ferrite, and the ferromagnetic substance in the heat-sensitive soft magnetic rod 32 loses ferromagnetism and becomes paramagnetic when the temperature is higher than a certain temperature (the transition temperature is the curie temperature point). While the ferromagnetic material in the heat-sensitive soft magnetic rod 32 regains ferromagnetism when the temperature is lower than a certain temperature (the transition temperature is the curie temperature point). When the heat-sensitive soft magnetic rod 32 has ferromagnetism, the heat-sensitive soft magnetic rod 32 can capture magnetic impurities such as iron filings in the slurry. When the heat-sensitive soft magnetic rod 32 loses ferromagnetism, the heat-sensitive soft magnetic rod 32 is demagnetized, and the magnetic attraction effect on the scrap iron is not generated. Those skilled in the art can adjust the ratio of materials in the heat-sensitive bar magnet 32 to set the curie point of the heat-sensitive bar magnet 32.

After the iron removing cylinder 2 is used for a period of time, iron slag is hung on the inner wall of the iron removing cylinder 2, a large amount of iron slag is captured on the magnetic medium net 3, the inner cavity of the iron removing cylinder 2 and the magnetic medium net 3 are subjected to slag discharge and cleaning through the water supply mechanism 5, hot water is sent into the iron removing cylinder 2 by the water supply mechanism 5, the hot water enters the iron removing cylinder 2 and then is in heat transfer with the thermosensitive soft magnetic rod 32 on the magnetic medium net 3, and as the temperature of the hot water exceeds a preset temperature value, the Curie temperature point of the thermosensitive soft magnetic rod 32 is reached, the thermosensitive soft magnetic rod 32 loses magnetic conductivity, so that the magnetic attraction of the iron slag attached to the surface of the thermosensitive soft magnetic rod 32 is eliminated; thereby the iron slag can be more easily dropped off and discharged along with the water flow. After the cleaning is finished, the temperature of the heat-sensitive soft magnetic rod 32 is reduced to be lower than the Curie temperature point, and the ferromagnetism is restored again.

Specifically, as shown in fig. 6 and 7, the heat-sensitive soft magnetic rods 32 are arranged in rows, and the distance between two adjacent rows of magnetic rods is equal; any two adjacent heat-sensitive soft magnetic rods 32 in each row are arranged at the same center distance L1. Through this setting for can loop through a plurality of lines of bar magnet when thick liquids upward movement, the bar magnet of every line can both play the deironing effect, guarantees the deironing effect through the bar magnet that sets up the certain line number.

Further, as shown in fig. 6 and 7, the heat-sensitive soft magnetic rods 32 are arranged in rows, and any two adjacent rows of heat-sensitive soft magnetic rods 32 are arranged in a staggered manner in a direction horizontally perpendicular to the length of the heat-sensitive soft magnetic rods 32. Through the staggered arrangement, the slurry passes through the interval of the heat-sensitive soft magnetic rods 32 in one row and then has larger contact chance with the heat-sensitive soft magnetic rods 32 in the next row, thereby further improving the iron removal effect.

Preferably, as shown in fig. 6 and 7, any two adjacent rows of the heat-sensitive soft magnetic rods 32 are arranged in a staggered manner by the half center distance (i.e. 0.5L1) in the direction horizontally perpendicular to the length of the heat-sensitive soft magnetic rods 32, and the arrangement is actually such that the heat-sensitive soft magnetic rods 32 are arranged in a row and also in a column at the same time. The arrangement enables the slurry to pass through the interval of the thermosensitive soft magnetic rods 32 in one row and then to contact with the thermosensitive soft magnetic rods 32 in the next row to the maximum, and meanwhile, the arrangement of the thermosensitive soft magnetic rods 32 is simpler, and the magnetic medium net 3 is convenient to manufacture.

Preferably, each of the heat-sensitive soft magnetic rods 32 is a round rod. The diameter of each round bar is equal. Compared with magnetic rods with other shapes, the round rods have smaller resistance to the slurry, and the normal flow rate of the slurry is ensured.

Specifically, referring to fig. 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 thermal soft magnetic rod 32; the water pump 53 then sends the hot water in the water tank 51 to the washing tank 11.

Preferably, as shown in fig. 2, a temperature sensor 54 is disposed in the water tank 51, and a user can know whether the water temperature reaches a preset temperature through the temperature sensor 54. The heater 52 is preferably an electric heating tube, and has high heating efficiency and convenient purchase.

Preferably, referring to fig. 1 and 2, the first driving device 4 includes a first driving cylinder 41 disposed on an outer wall of the cleaning tank 11, and a first rack 42 fixedly connected to a piston rod of the first driving cylinder 41; any one of the rotating shafts 33 is sleeved with a first gear 43, and the first gear 43 is in transmission connection with the first rack 42. During operation, the first driving cylinder 41 drives the first rack 42 to horizontally reciprocate, so as to drive the first gear 43 to rotate, and further to make the magnetic medium net 3 perform reciprocating turning motion. Compared with the rotation of the rotating shaft 33 driven by a motor, the driving cylinder is adopted as a driving source, the energy is saved, the control system is easier to control, when the piston rod of the first driving cylinder 41 is set to be completely extended out, the magnetic medium net 3 is in a vertical initial state, and it can be understood that when the magnetic medium net 3 is subjected to magnetic separation and iron removal, the magnetic medium net 3 is in the vertical initial state, and the piston rod of the first driving cylinder 41 is completely extended out.

Preferably, referring to fig. 1, 4 and 5, each set of the second driving devices 6 includes a bearing seat 61 disposed on an outer wall of the cleaning tank 11, an outer shaft 62 disposed in the bearing seat 61, the outer shaft 62 being provided with an axial through hole having a polygonal cross section, and an inner shaft 63 having a shape matched with the axial through hole is inserted into each axial through hole; an installation frame 64 is arranged on the outer wall of the cleaning box 11, a second driving cylinder 65 is arranged on the installation frame 64, and one end of each inner shaft 63 is fixedly connected with the corresponding shell 21; the end of the piston rod of the second driving cylinder 65 is connected with the other end of the inner shaft 63 through a rotary joint 66; the cleaning tank 11 is further provided with a third driving device 67 for driving the outer shaft 62 to rotate.

Each group of the inner shafts 63 and the corresponding outer shafts 62 are horizontally arranged and arranged on one side of the magnetic dielectric net 3, and the inner shafts 63 are inserted into the axial through holes of the outer shafts 62 to form clearance fit; due to the polygonal cross-section of the axial through-hole and the inner shaft 63, the inner shaft 63 does not rotate relative to the outer shaft 62, i.e.: 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, so as to drive the housing 21 to merge or separate, the third driving device 67 drives the outer shaft 62 to rotate, the inner shaft 63 rotates with the outer shaft 62, so as to turn over the housing 21 in the cleaning tank 11, so as to force the iron slag attached to the inner wall of the housing 21 to separate from the housing 21 under the action of water current surge, so as to clean and discharge the slag from the housing 21.

Further, there is provided the swivel joint 66 (see fig. 8) having a simple structure, wherein the swivel joint 66 includes a connecting seat 661, a flat bearing 662 is provided at a bottom of the connecting seat 661, a spindle 663 is provided in the flat bearing 662, the spindle 663 extends out of an upper surface of the connecting seat 661, a bottom end of the spindle 663 is provided with an annular flange 664, and the annular flange 664 abuts against a bottom of the flat bearing 662; the end part of the piston rod of the second driving cylinder 65 is connected with the mandrel 663; connecting block 661 is connected to inner shaft 63 by flange 665.

For convenience of processing, the axial through hole is a square through hole, and the cross section of the inner shaft 63 is square, that is: the inner shaft 63 is in fact a square rod and can be inserted through the square through hole to form a clearance fit.

Preferably, the end of the piston rod of the second driving cylinder 65 is connected to the free end of the spindle 663 through a universal joint (not shown). The advantage of this arrangement is that even if the coaxiality of the piston rod of the second driving cylinder 65 and the spindle 663 is reduced, the piston rod and the spindle 663 can still operate normally because they are hinged through a universal joint, because there is no rigid collision between the piston rod and the spindle 663.

As an embodiment, referring to fig. 1 and 2, the third driving device 67 includes a third driving cylinder 671, a second rack 672 sleeved and fixed on a piston rod of the third driving cylinder 671; the outer shaft 62 is sleeved with a second gear 673, and the second gear 672 is in transmission connection with the second gear 673. When the slag is discharged, the third driving cylinder 671 drives the second rack 672 to horizontally reciprocate, so as to drive the second gear 673 to rotate, and further to make the housing 21 perform reciprocating and overturning motions. Compared with the method that the rotating shaft 33 is driven to rotate by the motor, the method that the third driving cylinder 671 is adopted as the driving source is more energy-saving and easier to control by a control system, when the piston rod of the third driving cylinder 671 is set to be completely retracted, the shell 21 is in a vertical initial state, and it can be understood that when the shell 21 is reset and forms the iron removing cylinder 2, the piston rod of the third driving cylinder 671 is completely retracted.

Specifically, referring to fig. 2, 4 and 5, the feeding mechanism 71 includes a feeding pipe 711 vertically penetrating through the bottom of the cleaning tank 11 and a feeding valve 712 disposed on the feeding pipe 711; the feeding pipe 711 is communicated with the bottom of the iron removing cylinder 2; the feed valve 712 is opened and the slurry is transported to the de-ironing separator 2 by the feed pump. The discharging mechanism 72 comprises a discharging pipe 721 vertically penetrating the top of the cleaning tank 11 and a discharging valve 722 arranged on the discharging pipe 721; the discharge pipe 721 is communicated with the top of the iron removing cylinder 2. The finished slurry is filtered by the magnetic medium net 3 and then discharged through a discharge pipe 721. It should be noted that, the connection between the feeding pipe 711 and the iron removing cylinder 2 and the connection between the discharging pipe 721 and the iron removing cylinder 2 are provided with the sealing rings 73, and when the two shells 21 are combined, the iron removing cylinder 2 is hermetically connected with the feeding pipe 711 and the discharging pipe 721.

Further, referring to fig. 3, the slag discharging mechanism 8 includes a first slag discharging pipe 81 connected to the feeding pipe 711, a first slag discharging valve 82 disposed on the slag discharging pipe 81, a plurality of second slag discharging pipes 85 connected to the bottom surface of the cleaning tank, a second slag discharging valve 86 disposed on the second slag discharging pipe, a plurality of groups of fourth driving cylinders 83 disposed at the bottom of the cleaning tank 11, and a hard magnet 84 disposed at the piston end of the fourth driving cylinder 83; the hard magnets 84 are used for magnetically attracting the iron filings deposited at the bottom of the cleaning box 11, each fourth driving cylinder corresponds to one second slag discharging pipe 85, and the fourth driving cylinders 83 are used for driving the hard magnets 84 to reciprocate towards the corresponding second slag discharging pipes 85, so that the iron filings fall into the second slag discharging pipes 85. After the magnetic medium net 3 and the shell 21 are cleaned by the cleaning water, the iron slag falls off and settles to the bottom surface of the cleaning box 11, the fourth driving cylinder 83 of the slag discharging mechanism 8 drives the hard magnet 84 to move, so that the iron slag at the corners is adsorbed and moved to the second slag discharging pipe, and the iron slag residue in the cleaning box 11 is reduced.

Before removing iron and slag, referring to fig. 2, a certain amount of residual materials are stored in the iron removing cylinder 2, the slurry magnetic separation device further comprises a material returning mechanism 9, the material returning mechanism 9 comprises a material returning pipe 91 connected with the feeding pipe 711, and the material returning pipe 91 is provided with a material returning valve 92. The excess material is returned to the slurry tank by opening the material return valve 92, so that the excess material is prevented from being wasted.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.

Claims

1. A slurry magnetic separation device is characterized by comprising an underframe, a cleaning box arranged on the underframe, a de-ironing separator arranged in the cleaning box, a magnetic medium net rotatably arranged in the cleaning box, a first driving device used for driving the magnetic medium net to rotate, and a water supply mechanism used for conveying water to the cleaning box; the iron removing cylinder consists of two symmetrically arranged shells, 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 as to enable the two shells to be combined or separated; the bottom of the cleaning box is provided with a feeding mechanism communicated with the bottom of the iron removing cylinder, and the top of the cleaning box is provided with a discharging mechanism communicated with the top of the iron removing cylinder; the magnetic medium net is positioned in the inner cavity of the iron removing cylinder during iron removal; and a slag discharging mechanism is arranged on the cleaning box.

2. The magnetic separation device for the slurry according to claim 1, wherein the magnetic medium net comprises two side plates which are oppositely arranged, a plurality of heat-sensitive soft magnetic rods which are arranged between the two side plates, and a rotating shaft which is arranged outside the two side plates, two ends of each heat-sensitive soft magnetic rod are respectively connected with the two side plates, one end of each rotating shaft is fixedly connected with the corresponding side plate, and the other end of each rotating shaft is rotatably connected with the cleaning box through a bearing seat.

3. The magnetic separation device for the slurry according to claim 2, wherein the water supply mechanism comprises a water tank, a heater and a water pump, the water pump is used for sending hot water in the water tank to the cleaning tank, and the heater is used for heating the water in the water tank and enabling the temperature of the water to be higher than the Curie temperature of the heat-sensitive soft magnetic rod.

4. The magnetic separation device for the slurry according to claim 2, wherein the first driving device comprises a first driving cylinder arranged on the outer wall of the cleaning box, and a first rack fixedly connected to a piston rod of the first driving cylinder is sleeved on the first driving cylinder; any one the pivot is overlapped and is equipped with a first gear, first gear is connected with first rack transmission.

5. The magnetic separation device for the slurry according to claim 1, wherein each group of the second driving devices comprises 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 matched with the shape of the axial through hole is inserted into each axial through hole; the outer wall of the cleaning box is provided with a mounting frame, the mounting frame is provided with a second driving cylinder, and one end of each inner shaft is fixedly connected with the corresponding shell; the end part of a piston rod of the second driving cylinder is connected with the other end of the inner shaft through a rotary joint; the cleaning box is also provided with a third driving device for driving the outer shaft to rotate.

6. The magnetic separation device for the slurry according to claim 5, wherein the third driving device comprises a third driving cylinder, and a second rack sleeved and fixedly connected to a piston rod of the third driving cylinder; the outer axle is sleeved with a second gear, and the second rack is in transmission connection with the second gear.

7. The magnetic separation device for slurry according to claim 5, wherein the rotary joint comprises a connecting seat, a flat bearing is arranged at the bottom of the connecting seat, a mandrel is arranged in the flat bearing and extends out of the upper surface of the connecting seat, and an annular flange is arranged at the bottom end of the mandrel and abuts against the bottom of the flat bearing.

8. The magnetic separation device for the slurry, which is characterized in that the feeding mechanism comprises a feeding pipe vertically penetrating through the bottom of the cleaning box and a feeding valve arranged on the feeding pipe, wherein the feeding pipe is communicated with the bottom of the iron removing cylinder; the discharging mechanism comprises a discharging pipe vertically penetrating through 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 removing barrel.

9. The magnetic separation device for the slurry according to claim 8, wherein the slag discharging mechanism comprises a first slag discharging pipe connected with the feeding pipe, a first slag discharging valve arranged on the first slag discharging pipe, a plurality of second slag discharging pipes connected with the bottom surface of the cleaning tank, a second slag discharging valve arranged on the second slag discharging pipe, a plurality of groups of fourth driving cylinders arranged at the bottom of the cleaning tank, and a hard magnet arranged at the end of a piston of each fourth driving cylinder; the hard magnet is used for magnetically attracting scrap iron deposited at the bottom of the cleaning box, and each fourth driving cylinder is used for driving the hard magnet to reciprocate towards the corresponding second slag discharging pipe, so that the scrap iron falls into the second slag discharging pipe.

10. The magnetic separation device for the slurry according to claim 1, further comprising a material returning mechanism, wherein the material returning mechanism comprises a material returning pipe connected with the feeding pipe, and the material returning pipe is provided with a material returning valve.