Waste magnetic separation device and magnetic separation method thereof

Abstract

The present invention provides a waste magnetic separation device and a magnetic separation method thereof, which relates to the technical field of waste magnetic separation, and includes: a bracket and a first belt conveyor; a feed end and a discharge end are arranged on both sides of the bracket, a plurality of screening magnets are arranged on the bracket along the conveying direction of the first belt conveyor, an adsorption magnet is fixedly connected to the side of the bracket close to the discharge end, a driving mechanism is arranged on the upper end of the bracket, and the driving mechanism is used to drive two adjacent screening magnets to move alternately back and forth in the vertical direction; the screening magnet includes a first magnet and a second magnet, and while the first magnet moves upward, the second magnet moves downward, and the second magnet drives the metal material directly below the first magnet to move near the second magnet in the horizontal direction; a first conveyor belt is arranged on the upper end of the bracket, and the screening magnet moves downward to knock the first conveyor belt. The present invention has the function of improving the efficiency of the adsorption magnet in adsorbing metal materials and improving the purity of the adsorbed metal materials.

Description

Technical Field

[0001] The invention relates to the technical field of waste magnetic separation, and in particular to a waste magnetic separation device and a magnetic separation method thereof. Background Art

[0002] As my country's urbanization construction steadily advances, a large number of urban and rural buildings are demolished, which will generate a lot of construction waste. Construction waste contains various metal substances, light impurities, cement and stone wastes. Metal substances and cement and stone can be sorted and reused. Existing construction waste sorting methods include flotation, air separation, snail current separation and magnetic separation.

[0003] For example, the Chinese patent application document with publication number CN116764807A, entitled A magnetic separator with a buffer drop structure on a construction and decoration waste material line, uses a magnetic separation conveyor belt for magnetic separation. The magnetic debris output after magnetic separation is discharged through a drop pipe and falls into a push bucket cart below the drop pipe. The magnetic debris falling from the magnetic separation conveyor belt falls onto the upper buffer slide on the upper buffer assembly, and is buffered and shock-absorbed by a buffer spring. Then, the magnetic debris can slide down along the upper buffer slide and fall into the drop pipe. A lower buffer assembly is provided at the bottom of the drop pipe. When magnetic debris falls on the lower buffer slide of the lower buffer assembly, the lower buffer slide will rotate at a small angle for buffering, and then reset under the action of the counterweight block. Then, the magnetic debris will slide down along the lower buffer slide and finally fall into the push bucket cart.

[0004] Regarding the above-mentioned related technologies, when magnetic separation is performed on construction waste, since some metal substances are buried in cement stone or pressed by cement blocks, the sum of the metal substance's own gravity and the downward pressure of the cement blocks on the metal substances is greater than the upward adsorption force of the magnet on the metal substances, resulting in the metal substances not being adsorbed by the magnetic separator, which has a negative impact on the collection efficiency of the metal substances. At the same time, during the adsorption process, two metal blocks are adsorbed at the same time, and the two metal blocks are arranged in a vertical direction. The two metal blocks will clamp some light impurities, resulting in the adsorbed magnetic substances containing light impurities. Summary of the invention

[0005] In view of this, the present invention provides a waste magnetic separation device and a magnetic separation method thereof, aiming to solve the problem that cement blocks block metal substances from being adsorbed, and light impurities are mixed in the metal blocks when they are adsorbed.

[0006] In order to solve the above technical problems, the present invention provides a waste magnetic separation device, including a bracket and a first belt conveyor; a feed end and a discharge end are arranged on both sides of the bracket, and a plurality of screening magnets are arranged on the bracket along the conveying direction of the first belt conveyor, and the screening magnets are slidably connected with the bracket in the vertical direction, and an adsorption magnet is fixedly connected to the side of the bracket close to the discharge end, and a driving mechanism is arranged on the upper end of the bracket, and the driving mechanism is used to drive two adjacent screening magnets to move back and forth alternately in the vertical direction; the screening magnets include a first magnet and a second magnet, and the first magnet moves downward to drive the metal material to move upward, and while the first magnet moves upward, the second magnet moves downward, and the second magnet drives the metal material directly below to move upward, and at the same time, the second magnet drives the metal material directly below the first magnet to move in the horizontal direction close to the second magnet; a first conveyor belt is arranged on the upper end of the bracket, and the screening magnets and adsorption magnets are arranged inside the first conveyor belt, and the adsorption magnet adsorbs the metal material to the bottom surface of the first conveyor belt, and the operation of the first conveyor belt can transport the metal material, and the downward movement of the screening magnet can knock the first conveyor belt.

[0007] By adopting the above technical solution, during the process of transporting construction waste by the first belt conveyor, two adjacent screening magnets move up and down alternately, driving the metal material to move to the upper surface of the construction waste and driving the metal material to move in a horizontal direction relative to the impurities in the construction waste, thereby separating the metal material from the construction waste and reducing the probability of light impurities being mixed between the two metal blocks. At the same time, the metal material under the cement block is separated from the cement block in a horizontal direction, and then the metal material is moved to the upper surface of the construction waste, thereby improving the efficiency of the adsorption magnet in adsorbing the metal material and improving the purity of the adsorbed metal material.

[0008] Optionally, the driving mechanism includes a first rotation source, which is fixedly connected to the bracket, the first rotation source is chain-drivenly connected to a transmission roller, the transmission roller is belt-drivenly connected to a transmission wheel, the transmission wheel is coaxially fixedly connected to a transmission gear, the transmission gear is meshed with a driven gear, the transmission gear and the driven gear are respectively coaxially fixedly connected to a support plate, the support plate is eccentrically hinged with a transmission rod, and the transmission rod is hinged to the screening magnet at one end away from the support plate.

[0009] By adopting the above technical solution, the first rotation source drives the screening magnet to reciprocate in the vertical direction through the transmission roller, the transmission wheel, the transmission gear, the driven gear, the support plate and the transmission rod in sequence.

[0010] Optionally, a conveying plate for driving the metal material to move is fixedly connected to the outer side surface of the first conveyor belt.

[0011] By adopting the above technical solution, the conveying plate is vertically arranged with the first conveyor belt, and the contact between the conveying plate and the metal material can drive the metal material to move, thereby improving the conveying effect of the first conveyor belt.

[0012] Optionally, the first belt conveyor includes a second rotation source, a first driving roller, a second conveyor belt and a first driven roller, the second rotation source is fixedly connected to the bracket, the first driving roller and the first driven roller are both rotatably connected to the bracket, and the second conveyor belt is sleeved on the outer side surfaces of the first driving roller and the first driven roller.

[0013] Optionally, the bracket is fixedly connected to a third rotation source on one side close to the discharge end, the driving shaft fixing sleeve of the third rotation source is provided with a support tube, and the outer side surface of the support tube is fixedly connected to a plurality of unloading plates along the circumferential direction.

[0014] Optionally, the blanking plate is slidably connected to an adjusting plate, and a fixing spring is fixedly connected between the blanking plate and the adjusting plate.

[0015] By adopting the above technical solution, the fixed spring adjusts the distance between the support tube and the second conveyor belt, and the fixed spring is compressed to different lengths, so that the adjustment plate can continuously abut against the outer side surface of the first conveyor belt, thereby improving the unloading effect of the metal material on the outer side surface of the first conveyor belt.

[0016] Optionally, a second belt conveyor is provided below the support tube, and the second belt conveyor is used for receiving and outputting metal materials.

[0017] Optionally, a discharge port is provided between the first belt conveyor and the second belt conveyor, and a third belt conveyor is provided below the discharge port, and the third belt conveyor is used for receiving and outputting construction waste after metal substances are screened out.

[0018] In a second aspect, the present invention provides a waste magnetic separation method, which is applied to a waste magnetic separation device described in the first aspect, and the magnetic separation method is:

[0019] S1, the first belt conveyor conveys the construction waste from the feeding end to the discharging end;

[0020] S2, two adjacent screening magnets move back and forth in the vertical direction, and the screening magnets move up and down to drive the metal material to flip upward, and at the same time drive the metal material to move horizontally relative to the impurities in the construction waste;

[0021] S3, the adsorption magnet adsorbs the metal substances in the construction waste transported to the discharge end, so that the metal substances adhere to the lower surface of the adsorption magnet, and the first belt conveyor outputs the remaining impurities of the construction waste through the discharge end.

[0022] By adopting the above technical solution, metal substances can be screened out of the construction waste during the process of being transported to the next workstation, thereby improving the processing efficiency of the construction waste.

[0023] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects:

[0024] 1. In the process of transporting construction waste by the first belt conveyor, two adjacent screening magnets move up and down alternately, driving the metal material to move to the upper surface of the construction waste, and at the same time driving the metal material to move in the horizontal direction relative to the impurities in the construction waste, so that the metal material can be separated from the construction waste, reducing the probability of light impurities mixed between the two metal blocks, and at the same time making the metal material under the cement block separate from the cement block in the horizontal direction, and then moving the metal material to the upper surface of the construction waste, thereby improving the efficiency of the adsorption magnet to adsorb the metal material, and at the same time improving the purity of the adsorbed metal material.

[0025] 2. The screening magnet moves back and forth in the vertical direction, and moves downward to knock on the first conveyor belt. The vibration energy generated by the knocking reaches vertically to the position of the first conveyor belt close to the adsorption magnet, so that the metal material and non-metal material on the bottom surface of the first conveyor belt directly below the adsorption magnet move relatively. The metal material is always adsorbed on the bottom surface of the first conveyor belt by the adsorption magnet, and the non-metal material is separated from the metal material under the action of the vibration energy and falls to the first belt conveyor by its own gravity. The non-metal material falling to the first belt conveyor is output as impurities, thereby improving the purity of the metal material output from the discharging end of the first conveyor belt and improving the separation effect of metal and non-metal materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 A side view of an embodiment of the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of the first conveyor belt according to an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a driving mechanism according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic structural diagram of a support plate and a transmission rod according to an embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the second rotation source, the third rotation source and the fourth rotation source in an embodiment of the present invention;

[0032] Figure 7Schematic diagram of the structure of the first belt conveyor and the second belt conveyor according to an embodiment of the present invention;

[0033] Figure 8 It is a schematic structural diagram of a support tube and an adjustment plate according to an embodiment of the present invention.

[0034] Description of the accompanying drawings: 1. bracket; 11. feeding end; 12. discharging end; 13. discharging port; 2. first belt conveyor; 21. second rotation source; 22. first driving roller; 23. second conveyor belt; 24. first driven roller; 3. screening magnet; 31. first magnet; 32. second magnet; 4. adsorption magnet; 5. driving mechanism; 51. first rotation source; 511. first sprocket; 52. transmission chain; 53. second sprocket; 54. transmission roller; 541. connecting roller; 542. connecting belt; 543. rotating roller; 55. transmission wheel; 5 51. Transmission gear; 56. Conveyor belt; 57. Driven gear; 58. Support plate; 59. Transmission rod; 6. Support roller; 61. First conveyor belt; 611. Conveyor plate; 7. Third rotation source; 71. Support tube; 72. Unloading plate; 73. Adjustment plate; 74. Fixed spring; 8. Second belt conveyor; 81. Fourth rotation source; 82. Second drive roller; 83. Third conveyor belt; 84. Second driven roller; 9. Third belt conveyor; 91. Fifth rotation source; 92. Third drive roller; 93. Fourth conveyor belt; 94. Third driven roller. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 8 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0036] In a first aspect, this embodiment provides a waste magnetic separation device, referring to Figure 1 , Figure 2 and Figure 3A waste magnetic separation device includes a bracket 1, a first belt conveyor 2, a screening magnet 3, an adsorption magnet 4, a driving mechanism 5 and a discharge mechanism. The bracket 1 is erected on a horizontal plane, the first belt conveyor 2 is horizontally fixedly connected to the bracket 1, and is used to transport construction waste. The bracket 1 is provided with a feed end 11 and a discharge end 12 on both sides of the conveying direction of the first belt conveyor 2. A plurality of screening magnets 3 are provided along the conveying direction of the first belt conveyor 2, the screening magnets 3 are arranged above the first belt conveyor 2, the screening magnets 3 are slidably connected to the bracket 1 in the vertical direction, the adsorption magnet 4 is fixedly connected to the side of the bracket 1 close to the discharge end 12, and the magnetic force of the adsorption magnet 4 is greater than the magnetic force of the screening magnet 3. The driving mechanism 5 is arranged at the upper end of the bracket 1, and the driving mechanism 5 is used to drive two adjacent screening magnets 3 to move back and forth alternately in the vertical direction.

[0037] The first belt conveyor 2 transports the construction waste from the feed end 11 to the discharge end 12. During the transportation of the construction waste, the screening magnet 3 moves back and forth in the vertical direction. The screening magnet 3 moves downward to increase the attraction to the metal material, thereby driving the metal material to move upward. The screening magnet 3 moves upward to reduce the attraction to the metal material. The screening magnet 3 moves back and forth up and down to drive the metal material to flip upward, so that the metal material moves upward to the surface of the construction waste. The adsorption magnet 4 adsorbs the metal material in the construction waste transported to the discharge end 12, so that the metal material adheres to the lower surface of the adsorption magnet 4, and the first belt conveyor 2 outputs the remaining impurities of the construction waste through the discharge end 12. Note: The metal material mentioned in the present invention specifically refers to the metal material that can be adsorbed by a magnet.

[0038] Reference Figure 2 and Figure 3 The screening magnet 3 includes a first magnet 31 and a second magnet 32, and the first magnet 31 and the second magnet 32 ​​are arranged adjacent to each other in the horizontal direction. The first magnet 31 moves downward to drive the metal material to move upward. When the first magnet 31 moves upward, the second magnet 32 ​​moves downward, and the second magnet 32 ​​drives the metal material directly below to move upward. At the same time, the second magnet 32 ​​drives the metal material directly below the first magnet 31 to move horizontally close to the second magnet 32. This function requires that the speed of the up and down reciprocating movement of the screening magnet 3 is greater than the conveying speed of the first belt conveyor 2, so that before the metal material of the first magnet 31 is conveyed to the second magnet 32 ​​by the first belt conveyor 2, the second magnet 32 ​​completes at least one up and down reciprocating movement.

[0039] In summary, during the process of transporting construction waste by the first belt conveyor 2, two adjacent screening magnets 3 move up and down alternately, and while driving the metal material to move to the upper surface of the construction waste, the metal material is driven to move in a horizontal direction relative to the impurities in the construction waste, thereby separating the metal material from the construction waste and reducing the probability of light impurities being mixed between the two metal blocks. At the same time, the metal material under the cement block is separated from the cement block in a horizontal direction, and then the metal material is moved to the upper surface of the construction waste, thereby improving the efficiency of the adsorption magnet 4 in adsorbing the metal material and at the same time improving the purity of the adsorbed metal material.

[0040] Reference Figure 3 The upper end of the bracket 1 is provided with a first conveyor belt 61, the screening magnet 3 and the adsorption magnet 4 are provided inside the first conveyor belt 61, the adsorption magnet 4 adsorbs the metal material to the bottom surface of the first conveyor belt 61, the first conveyor belt 61 can transport the metal material when it is running, and the screening magnet 3 can knock the first conveyor belt 61 when it moves downward. The operation mode of the first conveyor belt 61 can adopt a common belt conveyor, which is a common prior art and will not be described in detail here.

[0041] As the screening magnet 3 absorbs the metal material upward, the metal material will inevitably carry along the lighter non-metallic material, and the lighter non-metallic material will be transported to the first conveyor belt 61. Then the first conveyor belt 61 outputs the non-metallic material and the metal material synchronously, which has a negative impact on the purity of the metal material output from the discharge end 12.

[0042] Therefore, the screening magnet 3 is made to reciprocate in the vertical direction, and the screening magnet 3 moves downward to knock the first conveyor belt 61. The vibration energy generated by the knocking is vertically transmitted to the position of the first conveyor belt 61 close to the adsorption magnet 4, so that the metal material and non-metallic material on the bottom surface of the first conveyor belt 61 directly below the adsorption magnet 4 are relatively moved. The metal material is always adsorbed by the adsorption magnet 4 on the bottom surface of the first conveyor belt 61, and the non-metallic material is separated from the metal material under the action of the vibration energy and falls to the first belt conveyor 2 by its own gravity. The non-metallic material that falls to the first belt conveyor 2 is output as impurities, thereby improving the purity of the metal material output from the discharge end 12 of the first conveyor belt 61, and improving the separation effect of metal and non-metallic materials in construction waste.

[0043] Reference Figure 1 , Figure 4 and Figure 5The driving mechanism 5 includes a first rotation source 51, a first sprocket 511, a transmission chain 52, a second sprocket 53, a transmission roller 54, a connecting roller 541, a connecting belt 542, a rotating roller 543, a transmission wheel 55, a transmission gear 551, a conveyor belt 56, a driven gear 57, a support plate 58 and a transmission rod 59. The first sprocket 511, the transmission chain 52 and the second sprocket 53 form a chain transmission assembly, and the connecting roller 541, the connecting belt 542, the rotating roller 543 and the conveyor belt 56 form a belt transmission connection.

[0044] Reference Figure 1 , Figure 4 and Figure 5 The first rotation source 51 is fixedly connected to the bracket 1, the first sprocket 511 is fixedly sleeved on the driving shaft of the first rotation source 51, the second sprocket 53 is rotationally connected to the bracket 1, and the transmission chain 52 is sleeved on the side walls of the first sprocket 511 and the second sprocket 53. The transmission roller 54 and the connecting roller 541 are both rotationally connected to the bracket 1, the transmission roller 54 is coaxially fixedly connected to the second sprocket 53, the connecting roller 541 is coaxially fixedly connected to the transmission roller 54, the connecting roller 541 and the rotating roller 543 are both rotationally connected to the bracket 1, and the connecting belt 542 is sleeved on the outer side surfaces of the connecting roller 541 and the rotating roller 543.

[0045] Reference Figure 1 , Figure 4 and Figure 5 The transmission wheel 55 is rotatably connected to the bracket 1, the conveyor belt 56 is sleeved on the outer side of the rotating roller 543 and the transmission wheel 55, the transmission gear 551 is coaxially fixedly connected to the transmission wheel 55, and the transmission gear 551 is meshed with the driven gear 57. A plurality of driven gears 57 are arranged in the horizontal direction, and two adjacent driven gears 57 are meshed. A plurality of support plates 58 are arranged, and the transmission gear 551 and each driven gear 57 are coaxially fixedly connected to a support plate 58 respectively. One end of the transmission rod 59 is eccentrically hinged to the support plate 58, and the end of the transmission rod 59 away from the support plate 58 is hinged to the sieving magnet 3.

[0046] The driving mechanism 5 is a belt drive and chain drive. The first rotation source 51 drives the transmission roller 54 to rotate through the first sprocket 511, the transmission chain 52 and the second sprocket 53 in sequence. The transmission roller 54 drives the rotating roller 543 to rotate through the connecting roller 541 and the connecting belt 542. The rotating roller 543 drives the transmission wheel 55 to rotate through the conveyor belt 56. The transmission gear 551 rotates synchronously with the transmission wheel 55. The transmission gear 551 drives the driven gear 57 to rotate. The transmission gear 551 and the driven gear 57 drive the support plate 58 to rotate. The support plate 58, the transmission rod 59 and the screening magnet 3 form a crank slider structure. When the support plate 58 rotates, it drives the screening magnet 3 to move up and down through the transmission rod 59.

[0047] In addition, a single cylinder is used to control the movement of the sieving magnet 3, which can also realize the reciprocating up and down movement of the sieving magnet 3. However, the driving mechanism 5 is driven by a rotation source, so that the reciprocating movement of two adjacent sieving magnets 3 has better synchronization.

[0048] Reference Figure 1 and Figure 3 , the bracket 1 is rotatably connected to the support roller 6, and the first conveyor belt 61 is sleeved on the outer side of the support roller 6 and the drive roller 54, which can also drive the first conveyor belt 61 to run. During the downward movement of the sieve magnet 3, there is a probability that the metal material with light weight is adsorbed. The metal material moves upward under the adsorption force of the sieve magnet 3 and abuts against the first conveyor belt 61, thereby reducing the amount of metal material attached to the surface of the sieve magnet 3. At the same time, the first conveyor belt 61 runs under the action of the support roller 6, and the metal material on the surface of the first conveyor belt 61 is transported to the discharge end 12. The outer side of the first conveyor belt 61 is fixedly connected to a conveying plate 611, and the conveying plate 611 is vertically arranged with the first conveyor belt 61. The abutment of the conveying plate 611 with the metal material can drive the metal material to move, thereby improving the conveying effect of the first conveyor belt 61.

[0049] In addition, at the discharge end 12, the length of the first conveyor belt 61 is greater than the length of the first belt conveyor 2. The first belt conveyor 2 outputs the construction waste with the metal substances adsorbed from the discharge end 12, and the construction waste is separated from the first belt conveyor 2 and falls to the next station. The conveying plate 611 pushes the metal material at the end of the first conveyor belt 61, so that the metal material is separated from the first conveyor belt 61 and moved to another station.

[0050] Reference Figure 1 , Figure 6 and Figure 7 The first belt conveyor 2 includes a second rotation source 21, a first driving roller 22, a second conveyor belt 23 and a first driven roller 24. The second rotation source 21 is fixedly connected to the bracket 1. The first driving roller 22 and the first driven roller 24 are both rotatably connected to the bracket 1. The second conveyor belt 23 is sleeved on the outer side of the first driving roller 22 and the first driven roller 24. The second rotation source 21 drives the second conveyor belt 23 to transport construction waste through the first driving roller 22.

[0051] Reference Figure 1 and Figure 8 The third rotating source 7 is fixedly connected to the side of the bracket 1 near the discharge end 12. The driving shaft of the third rotating source 7 is fixedly sleeved with a support tube 71. The outer side of the support tube 71 is fixedly connected to a plurality of blanking plates 72 along the circumferential direction. The third rotating source 7 drives the support tube 71 and the blanking plates 72 to rotate, so that the blanking plates 72 rotate counterclockwise around the central axis of the support tube 71 (refer to Figure 8), the blanking plate 72 peels off the metal material on the surface of the adsorbed magnet 4. The blanking plate 72 is slidably connected with an adjustment plate 73, and a fixed spring 74 is fixedly connected between the blanking plate 72 and the adjustment plate 73 to adapt to the distance between the support tube 71 and the first conveyor belt 61. The fixed spring 74 is compressed to different lengths, so that the adjustment plate 73 can continuously abut against the outer side of the first conveyor belt 61, thereby improving the stripping effect of the metal material on the outer side of the first conveyor belt 61.

[0052] Reference Figure 1 , Figure 6 and Figure 7 A second belt conveyor 8 is provided below the support tube 71. The second belt conveyor 8 is used to receive the metal material peeled off from the surface of the first conveyor belt 61 and output the metal material. The second belt conveyor 8 includes a fourth rotation source 81, a second driving roller 82, a third conveyor belt 83 and a second driven roller 84. The second driven roller 84 is provided directly below the first conveyor belt 61. The fourth rotation source 81 drives the third conveyor belt 83 to convey the metal material through the second driving roller 82. The third conveyor belt 83 is provided at an angle. The end of the third conveyor belt 83 away from the support 1 is lower than the end close to the support 1.

[0053] Reference Figure 2 , Figure 6 and Figure 7 A discharge port 13 is provided between the first belt conveyor 2 and the second belt conveyor 8, and a third belt conveyor 9 is provided directly below the discharge port 13. The third belt conveyor 9 is used to receive and output the construction waste after the metal substances are screened out. The third belt conveyor 9 includes a fifth rotating source 91, a third driving roller 92, a fourth conveyor belt 93 and a third driven roller 94. The first belt conveyor 2 transports the construction waste after the metal substances are screened out to the discharge port 13, and the construction waste after the metal substances are selected falls to the fourth conveyor belt 93 through the discharge port 13. The fifth rotating source 91 drives the fourth conveyor belt 93 through the third driving roller 92 to output the construction waste after the metal substances are selected out.

[0054] The implementation principle of a waste magnetic separation device in an embodiment of the present invention is as follows: the first belt conveyor 2 transports construction waste from the feed end 11 to the discharge end 12. During the transportation of the construction waste, the screening magnet 3 moves back and forth in the vertical direction. The screening magnet 3 moves downward to increase the attraction to the metal material, thereby driving the metal material to move upward. The screening magnet 3 moves upward to reduce the attraction to the metal material. The screening magnet 3 moves back and forth up and down to drive the metal material to flip upward, so that the metal material moves upward to the surface of the construction waste. The adsorption magnet 4 adsorbs the metal material in the construction waste transported to the discharge end 12, so that the metal material adheres to the lower surface of the adsorption magnet 4, and the first belt conveyor 2 outputs the remaining impurities of the construction waste through the discharge end 12.

[0055] In a second aspect, an embodiment of the present invention provides a waste magnetic separation method, which is applied to a waste magnetic separation device in the first aspect, and the magnetic separation method is:

[0056] S1, the first belt conveyor 2 conveys the construction waste from the feed end 11 to the discharge end 12;

[0057] S2, two adjacent screening magnets 3 move back and forth in the vertical direction, and the screening magnets 3 move back and forth up and down to drive the metal material to flip upward, and at the same time drive the metal material to move in the horizontal direction relative to the impurities in the construction waste;

[0058] S3, the adsorption magnet 4 adsorbs the metal substances in the construction waste transported to the discharge end 12, so that the metal substances adhere to the lower surface of the adsorption magnet 4, and the first belt conveyor 2 outputs the remaining impurities of the construction waste through the discharge end 12.

[0059] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A waste magnetic separation device, comprising a support (1) and a first belt conveyor (2), characterized in that: A feeding end (11) and a discharging end (12) are arranged on both sides of the bracket (1); a plurality of screening magnets (3) are arranged on the bracket (1) along the conveying direction of the first belt conveyor (2); the screening magnets (3) are slidably connected to the bracket (1) along the vertical direction; an adsorption magnet (4) is fixedly connected to one side of the bracket (1) close to the discharging end (12); a driving mechanism (5) is arranged on the upper end of the bracket (1); the driving mechanism (5) is used to drive two adjacent screening magnets (3) to move alternately back and forth in the vertical direction; The screening magnet (3) comprises a first magnet (31) and a second magnet (32); the first magnet (31) moves downward to drive the metal material to move upward; while the first magnet (31) moves upward, the second magnet (32) moves downward, and the second magnet (32) drives the metal material directly below to move upward; at the same time, the second magnet (32) drives the metal material directly below the first magnet (31) to move in a horizontal direction close to the second magnet (32); A first conveyor belt (61) is arranged at the upper end of the bracket (1); the screening magnet (3) and the adsorption magnet (4) are arranged inside the first conveyor belt (61); the adsorption magnet (4) adsorbs metal materials to the bottom surface of the first conveyor belt (61); the first conveyor belt (61) is able to transport metal materials when it is running; and the screening magnet (3) is able to strike the first conveyor belt (61) when it moves downward.

2. A waste magnetic separation device according to claim 1, characterized in that: The driving mechanism (5) comprises a first rotation source (51), the first rotation source (51) being fixedly connected to the bracket (1), the first rotation source (51) being chain-drivenly connected to a transmission roller (54), the transmission roller (54) being belt-drivenly connected to a transmission wheel (55), the transmission wheel (55) being coaxially fixedly connected to a transmission gear (551), the transmission gear (551) being meshed with a driven gear (57), the transmission gear (551) and the driven gear (57) being coaxially fixedly connected to a support plate (58), the support plate (58) being eccentrically hingedly connected to a transmission rod (59), and the transmission rod (59) being hingedly connected to a screening magnet (3) at one end away from the support plate (58).

3. A waste magnetic separation device according to claim 2, characterized in that: A conveying plate (611) for driving the metal material to move is fixedly connected to the outer side surface of the first conveying belt (61).

4. A waste magnetic separation device according to claim 1, characterized in that: The first belt conveyor (2) comprises a second rotation source (21), a first driving roller (22), a second conveyor belt (23) and a first driven roller (24); the second rotation source (21) is fixedly connected to the bracket (1); the first driving roller (22) and the first driven roller (24) are both rotationally connected to the bracket (1); and the second conveyor belt (23) is sleeved on the outer side surfaces of the first driving roller (22) and the first driven roller (24).

5. A waste magnetic separation device according to claim 1, characterized in that: A third rotation source (7) is fixedly connected to one side of the bracket (1) close to the discharge end (12); a drive shaft fixed sleeve of the third rotation source (7) is provided with a support tube (71); and a plurality of discharge plates (72) are fixedly connected to the outer side surface of the support tube (71) along the circumferential direction.

6. A waste magnetic separation device according to claim 5, characterized in that: The blanking plate (72) is slidably connected to an adjusting plate (73), and a fixing spring (74) is fixedly connected between the blanking plate (72) and the adjusting plate (73).

7. A waste magnetic separation device according to claim 5, characterized in that: A second belt conveyor (8) is provided below the support tube (71), and the second belt conveyor (8) is used to receive and output metal materials.

8. A waste magnetic separation device according to claim 7, characterized in that: A discharge port (13) is provided between the first belt conveyor (2) and the second belt conveyor (8), and a third belt conveyor (9) is provided below the discharge port (13). The third belt conveyor (9) is used to receive and discharge construction waste after metal substances have been screened out.

9. A method for magnetic separation of waste, applied to a waste magnetic separation device as claimed in claim 1, characterized in that: include: S1, the first belt conveyor (2) conveys construction waste from a feed end (11) to a discharge end (12); S2, two adjacent screening magnets (3) move back and forth in the vertical direction, and the screening magnets (3) move back and forth up and down to drive the metal material to flip upward, and at the same time drive the metal material to move in the horizontal direction relative to the impurities in the construction waste; S3, the adsorption magnet (4) adsorbs the metal substances in the construction waste transported to the discharge end (12), so that the metal substances adhere to the lower surface of the adsorption magnet (4), and the first belt conveyor (2) outputs the remaining impurities in the construction waste through the discharge end (12).

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