High-purity quartz sand grading magnetic separation equipment

Abstract

The invention relates to the technical field of crushing, and discloses high-purity quartz sand grading magnetic separation equipment which comprises a crushing mechanism, the crushing mechanism comprises a crushing tank, a crushing groove is formed in the inner wall of the crushing tank, and a crushing rotor is arranged in the crushing tank; the grinding mechanism comprises a grinding groove, and the interior of the grinding groove is rotationally connected with a grinding rotor; and the multi-stage magnetic separation mechanism comprises a first magnetic separation assembly and a second magnetic separation assembly. The crushing mechanism and the grinding mechanism are arranged to conduct double processing on quartz sand, the removal rate of magnetite in the quartz sand is guaranteed, and meanwhile the processed quartz sand is magnetically adsorbed through the multi-stage magnetic separation mechanism; the monitoring unit and the transportation execution unit are arranged on the first transportation mechanism, so that the transportation speed of the first transportation mechanism can be adaptively changed according to the volume condition of quartz sand.

Description

Technical Field

[0001] The invention belongs to the technical field of crushing, and in particular relates to a high-purity quartz sand classification magnetic separation device. Background Art

[0002] Quartz sand is quartz particles made by crushing quartz stone. Quartz stone is a non-metallic mineral, a hard, wear-resistant, chemically stable silicate mineral. The color of quartz sand is milky white or colorless and translucent, with a Mohs hardness of 7; quartz sand is an important industrial mineral raw material, non-chemical hazardous goods, widely used in glass, casting, ceramics and fireproof materials, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasives, filter materials and other industries.

[0003] A Chinese patent with authorization announcement number CN219663811U discloses a high-purity quartz sand magnetic separation device. The screening part is used. When the crushing rollers 1 and 2 rotate, they engage the tooth blocks on both sides. The tooth blocks are repeatedly raised and lowered. At the same time, the connecting rod is raised and lowered. When the connecting rod descends, it contacts the top of the partition, so that the partition uses the buffer spring to repeatedly move to produce polarization. When the crushed quartz sand passes through the screen, it will not cause blockage due to polarization. The quartz sand that has not passed through the screen slides to the discharge port and is collected for secondary processing. Using the magnetic separation part, the quartz sand that has passed through the screen falls to the filter plate, and passes through the through hole 1, the cavity, and the through hole 2 through the guide plate to fall into the discharge pipe. When passing through the cavity, the magnetic material is adsorbed on the outer wall of the electromagnet.

[0004] However, the technical solution still has at least the following defects: the solution can only perform preliminary crushing on the quartz sand, and some impurities still existing in the crushed quartz sand cannot be removed, and the device uses electromagnets to absorb magnetic impurities, but does not provide a cleaning mechanism for magnetic impurities, resulting in excessive accumulation of magnetic impurities, resulting in poor subsequent magnetic absorption effect, and cannot ensure complete absorption of magnetic materials. In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a high-purity quartz sand classification magnetic separation equipment, which performs dual processing on the quartz sand by setting a crushing mechanism and a grinding mechanism to ensure the removal rate of magnetite in the quartz sand, and at the same time, the processed quartz sand is magnetically adsorbed by a multi-stage magnetic separation mechanism, and a monitoring unit and a transport execution unit are set for the first transport mechanism, so that the transport speed of the first transport mechanism can be adaptively changed according to the volume of the quartz sand, so that the quartz sand can be adsorbed for a longer time when the accumulation degree is high, and can pass quickly to save time when the accumulation degree is low, and a magnetic force adjustment unit is set for the electromagnet to achieve magnetic force control of the electromagnet, and a rotating drum is set on one side of the permanent magnet, so that the magnetite is affected by the magnetic force change and falls off, thereby achieving a cleaning effect on the electromagnet or the magnet.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A high-purity quartz sand classification magnetic separation device, comprising:

[0008] A crushing mechanism, wherein the crushing mechanism comprises a crushing tank, wherein a crushing groove is provided on the inner wall of the crushing tank, and a crushing rotor is arranged inside the crushing tank, and the crushing mechanism performs preliminary crushing of the quartz sand through the crushing rotor and the crushing groove;

[0009] A grinding mechanism, the grinding mechanism comprising a grinding groove, a grinding rotor rotatably connected inside the grinding groove, and the grinding mechanism grinds the quartz sand through the grinding rotor and the grinding groove;

[0010] A multi-stage magnetic separation mechanism comprises a first magnetic separation component and a second magnetic separation component, wherein the first magnetic separation component and the second magnetic separation component are used for performing multi-stage magnetic separation on quartz sand by magnetic force.

[0011] As a preferred embodiment of the present invention, tooth grooves are provided on the inner walls of the top and bottom of the crushing tank, tooth rings are meshed and connected in the tooth grooves, a support shaft is fixedly installed between the upper and lower tooth rings, the crushing rotor is fixedly connected to the support shaft, a turntable is rotatably connected to the top of the support shaft, a first driving device is installed on the top of the crushing tank, the output end of the first driving device is fixedly connected to the turntable, and a feed port and a discharge port are respectively provided on the top and bottom of the crushing tank.

[0012] As a preferred embodiment of the present invention, a first transport mechanism is provided at the bottom of the crushing mechanism, the first transport mechanism includes a first conveyor belt, first rollers are meshed and connected at both ends of the first conveyor belt, the first rollers at both ends are rotatably installed with a first mounting frame and a second mounting frame, one of the first rollers is provided with a second driving device on one side, a full separation component is provided on the first conveyor belt, the full separation component includes a guide plate, a guide plate is installed at the bottom of the guide plate, a roller is installed at the top of the guide plate, the roller and the guide plate are staggered, and one end of the roller is fixedly connected to the second mounting frame through the mounting plate.

[0013] As a preferred embodiment of the present invention, a second transport mechanism is arranged on one side of the first transport mechanism, the second transport mechanism includes a second transport belt, second rollers are meshedly connected at both ends of the second transport belt, a plurality of guide rollers are movably connected to the second transport belt, side substrates are rotatably installed at both ends of the plurality of guide rollers, the side substrate is rotatably connected to the second roller at one end, a fixed bracket is installed at one end of the side substrate, one end of the fixed bracket is fixedly connected to the second mounting frame, a protective shell is installed on the second mounting frame, a transmission device is arranged in the protective shell, the transmission device includes gears, and the first roller and the second roller are connected through the meshing action of the gears.

[0014] As a preferred embodiment of the present invention, both ends of the grinding groove are fixedly connected to the side base plates on both sides, a third driving device is installed on one side of the grinding groove, a linkage device is arranged between the third driving device and the grinding rotor, the linkage device comprises a chain, sprockets are meshed and connected at both ends of the chain, the sprockets at both ends are respectively connected to the third driving device and the grinding rotor, a feed port is provided on one side of the grinding rotor, a material guide trough is installed on one side of the grinding groove, a limit plate is installed on the top of the grinding groove, and the limit plate is aligned with the second conveyor belt.

[0015] As a preferred embodiment of the present invention, the first magnetic separation component includes a mounting base, and a laser radar is installed on one side of the mounting base, a transmission belt is installed on the mounting base, an electromagnet is installed on the transmission belt, a fourth driving device is installed on one side of the mounting base, and the fourth driving device is used to drive the transmission belt to rotate, a fixed seat is installed at the bottom of one side of the mounting base, and a waste box is movably connected to one side of the fixed seat.

[0016] As a preferred embodiment of the present invention, the second magnetic separation component includes a permanent magnet, which is fixedly mounted on a fixed bracket, a rotating drum is mounted at one end of the permanent magnet, a belt is mounted between the rotating drum and the permanent magnet, a fifth driving device is mounted at one end of the rotating drum, a fixed plate is mounted at the bottom of the fixed bracket, a side guide plate is mounted at the bottom of the fixed plate, and the bottom of the side guide plate is aligned with the second conveyor belt.

[0017] As a preferred embodiment of the present invention, it also includes a processor, on which is configured a control system for controlling the high-purity quartz sand classification and magnetic separation equipment, the control system including a monitoring unit and a transport execution unit;

[0018] The monitoring unit is used to monitor the volume of quartz sand passing through the laser radar within a unit distance;

[0019] The transport execution unit is used to control the transport speed of the first transport mechanism according to the instruction generated by the monitoring unit.

[0020] As a preferred embodiment of the present invention, the monitoring unit includes a volume monitoring strategy, which includes obtaining the unit distance L of the movement of quartz sand, and the cross-sectional areas S1 and S2 at both ends of the quartz sand through lidar, and calculating the volume V of the quartz sand within the unit distance as V=(S1 + S2)L / 2;

[0021] The monitoring unit further includes a volume discrimination strategy, which includes configuring a volume upper limit threshold V0, and generating corresponding commands based on the size of the volume V of the quartz sand within the unit distance and the volume upper limit threshold V0. When V≥V0, it indicates that the volume reaches the volume upper limit threshold, and the first transportation mechanism needs to decelerate, and at the same time, a low-speed instruction is generated. When V<V0, it indicates that the volume is lower than the volume upper limit threshold, and the first transportation mechanism needs to accelerate, and at the same time, a high-speed instruction is generated.

[0022] As a preferred embodiment of the present invention, the transportation execution unit includes a speed preset strategy, which includes configuring a high speed V 高 and a low speed V 低 , where the high speed V 高 represents the speed after the first transportation mechanism accelerates, and the low speed V 低 represents the speed after the first transportation mechanism decelerates;

[0023] The transportation execution unit further includes a time judgment strategy, which includes obtaining the length s of the electromagnetic absorption area of the electromagnet, and calculating the time t for the quartz sand to pass through the electromagnetic absorption area in the low-speed state as t = s / V low based on the low speed V 低 ;

[0024] The transportation execution unit further includes a speed adjustment strategy, which includes that when a low-speed instruction is obtained, the first transportation mechanism runs at the low speed V 低 , and at the same time records the start running time T. When the running time T≥t, it indicates that the current quartz sand has passed through the magnetic absorption area, and an end instruction is generated. Otherwise, it indicates that the current quartz sand is passing through the magnetic absorption area, and an empty instruction is generated;

[0025] The speed adjustment strategy further includes that when a high-speed instruction is obtained, the instruction generated by the speed adjustment strategy is obtained. When an end instruction is obtained, the first transportation mechanism runs at the high speed V 高 , indicating that the quartz sand in the current magnetic absorption area is transported at high speed. When an empty instruction is obtained, the first transportation mechanism runs at the low speed V 低 , indicating that the quartz sand in the current magnetic absorption area is transported at low speed.

[0026] The present invention has the following beneficial effects compared with the prior art:

[0027] The present invention performs dual processing on quartz sand by setting a crushing mechanism and a grinding mechanism to ensure the removal rate of magnetite in the quartz sand, and at the same time, the processed quartz sand is magnetically adsorbed by a multi-stage magnetic separation mechanism;

[0028] The present invention sets a monitoring unit and a transport execution unit on the first transport mechanism, so that the transport speed of the first transport mechanism can be adaptively changed according to the volume of the quartz sand, so that the quartz sand can be adsorbed for a long time when the accumulation degree is high, and can pass quickly to save time when the accumulation degree is low;

[0029] The present invention realizes magnetic force control of the electromagnet by arranging a magnetic force regulating unit on the electromagnet, and arranges a rotating drum on one side of the permanent magnet so that the magnetite falls off due to the change of magnetic force, thereby achieving a cleaning effect on the electromagnet or the magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a high-purity quartz sand classification magnetic separation device of the present invention;

[0031] Figure 2 This is a schematic diagram of the internal structure of the crushing mechanism of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the electromagnet of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the first transport mechanism and the second transport mechanism of the present invention;

[0034] Figure 5 It is a schematic diagram of the gear structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the fully separated component of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the second magnetic separation component of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the permanent magnet of the present invention;

[0038] Fig. 9 It is a structural schematic diagram of the grinding mechanism of the present invention;

[0039] Fig.10 This is a schematic diagram of the structure of the grinding rotor of the present invention;

[0040] Fig.11 It is a schematic diagram of the monitoring unit flow of the present invention;

[0041] Fig.12 It is a schematic diagram of the flow chart of the transport execution unit of the present invention;

[0042] Fig.13 It is a schematic diagram of the process of the magnetic force adjustment unit of the present invention.

[0043] Reference numerals:

[0044] 100, crushing tank; 101, crushing groove; 102, crushing rotor; 103, supporting shaft; 104, gear ring; 105, tooth groove; 106, turntable; 107, discharge port; 108, first driving device; 109, feed port;

[0045] 200, first mounting frame; 201, first roller; 202, second driving device; 203, first conveyor belt; 204, second mounting frame; 205, roller; 206, guide plate; 207, guide plate;

[0046] 300, protective housing; 301, gear; 302, second roller; 303, second conveyor belt; 304, side substrate; 305, guide roller; 306, fixed bracket;

[0047] 400, grinding trough; 401, grinding rotor; 402, feeding port; 403, sprocket; 404, chain; 405, third driving device; 406, guide trough; 407, limit plate;

[0048] 500, mounting base; 501, fourth driving device; 502, transmission belt; 503, electromagnet; 504, permanent magnet; 505, belt; 506, rotating drum; 507, fifth driving device;

[0049] 600, fixed plate; 601, side guide plate; 602, fixed seat; 603, waste box. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0051] Embodiment 1:

[0052] like Figures 1 to 10 As shown, a high-purity quartz sand classification magnetic separation equipment comprises:

[0053] The crushing mechanism includes a crushing tank 100, a crushing groove 101 is provided on the inner wall of the crushing tank 100, a crushing rotor 102 is provided inside the crushing tank 100, and the crushing mechanism performs preliminary crushing of the quartz sand through the crushing rotor 102 and the crushing groove 101;

[0054] The grinding mechanism includes a grinding tank 400, a grinding rotor 401 is rotatably connected inside the grinding tank 400, and the grinding mechanism grinds the quartz sand through the grinding rotor 401 and the grinding tank 400;

[0055] The multi-stage magnetic separation mechanism comprises a first magnetic separation component and a second magnetic separation component. The first magnetic separation component and the second magnetic separation component are used for performing multi-stage magnetic separation on quartz sand by magnetic force.

[0056] like Figure 1 , Figure 2 As shown, in a specific embodiment, tooth grooves 105 are provided on the inner walls of the top and bottom of the crushing tank 100, and tooth rings 104 are meshed and connected in the tooth grooves 105. A support shaft 103 is fixedly installed between the upper and lower tooth rings 104. The crushing rotor 102 is fixedly connected to the support shaft 103. A turntable 106 is rotatably connected to the top of the support shaft 103. The turntable 106 is eccentrically arranged with the support shaft 103. A first driving device 108 is installed on the top of the crushing tank 100, and the output end of the first driving device 108 is fixedly connected to the turntable 106. A feed port 109 and a discharge port 107 are respectively provided on the top and bottom of the crushing tank 100. In this configuration, the first driving device 108 is started, the first driving device 108 drives the turntable 106 to rotate, the turntable 106 drives the eccentrically arranged support shaft 103 to revolve, thereby causing the gear ring 104 to revolve, and the gear ring 104 realizes self-rotation through the meshing action with the tooth groove 105, so that the crushing rotor 102 can rotate while revolving, and the quartz sand is preliminarily crushed. After the preliminarily crushing, impurities such as magnetite in the quartz sand are preliminarily separated and fall onto the first conveyor belt 203 through the discharge port 107.

[0057] like Figure 1 , Figure 4 , Figure 5 As shown, further, a first transport mechanism is provided at the bottom of the crushing mechanism, and the first transport mechanism includes a first conveyor belt 203, and first rollers 201 are meshed and connected at both ends of the first conveyor belt 203, and the first mounting frame 200 and the second mounting frame 204 are rotatably mounted on the first rollers 201 at both ends, and a second driving device 202 is mounted on one side of one of the first rollers 201, and a full separation component is provided on the first conveyor belt 203, and the full separation component includes a guide plate 207, a guide plate 206 is mounted at the bottom of the guide plate 207, and a roller 205 is mounted on the top of the guide plate 206, and the roller 205 and the guide plate 207 are staggered, and one end of the roller 205 is fixedly connected to the second mounting frame 204 through the mounting plate. In this setting, the staggered distribution of the guide plate 207 and the roller 205 makes the first conveyor belt 203 and the guide plate 207 close to each other, so as to achieve the complete scraping of the quartz sand on the first conveyor belt 203.

[0058] like Figure 1 , Figure 4 , Figure 5 As shown, further, a second transport mechanism is provided on one side of the first transport mechanism, and the second transport mechanism includes a second transport belt 303, and second rollers 302 are meshedly connected at both ends of the second transport belt 303, and a plurality of guide rollers 305 are movably connected to the second transport belt 303, and side substrates 304 are rotatably installed at both ends of the plurality of guide rollers 305, and the side substrate 304 is rotatably connected to the second roller 302 at one end thereof, and a fixed bracket 306 is installed at one end of the side substrate 304, and one end of the fixed bracket 306 is fixedly connected to the second mounting frame 204, and a protective shell 300 is installed on the second mounting frame 204, and a transmission device is arranged in the protective shell 300, and the transmission device includes a gear 301, and the first roller 201 and the second roller 302 are connected by the meshing action of the gear 301. In this arrangement, when the first roller 201 on the first transport mechanism rotates, it drives the gear 301 connected to it to rotate, and the gear 301 on the other side rotates through meshing, thereby realizing the rotation of the second roller 302, and the rotation direction of the second roller 302 is opposite to that of the first roller 201.

[0059] Embodiment 2:

[0060] like Fig. 9 , Fig.10 As shown, in a specific embodiment, both ends of the grinding groove 400 are fixedly connected to the side substrates 304 on both sides, a third driving device 405 is installed on one side of the grinding groove 400, and a linkage device is arranged between the third driving device 405 and the grinding rotor 401, and the linkage device includes a chain 404, and sprockets 403 are meshed and connected at both ends of the chain 404, and the sprockets 403 at both ends are respectively connected to the third driving device 405 and the grinding rotor 401, a feeding port 402 is opened on one side of the grinding rotor 401, a material guide groove 406 is installed on one side of the grinding groove 400, and a limiting plate 407 is installed on the top of the grinding groove 400, and the limiting plate 407 is aligned with the second conveyor belt 303. In this arrangement, the second conveyor belt 303 drives the quartz sand to fall into the top of the grinding rotor 401, and the quartz sand is prevented from leaking out by the limit plate 407. The third driving device 405 drives the grinding rotor 401 to rotate through the action of the sprocket 403 and the chain 404. The grinding rotor 401 drives the quartz sand to follow the rotation and enters the feed port 402 under the action of the railing at the top of the grinding tank 400, and the quartz sand is ground through the grinding rotor 401 and the grinding tank 400.

[0061] like Figure 1 , Figure 3As shown, further, the first magnetic separation component includes a mounting base 500, and a laser radar is installed on one side of the mounting base 500, a transmission belt 502 is installed on the mounting base 500, an electromagnet 503 is installed on the transmission belt 502, a fourth driving device 501 is installed on one side of the mounting base 500, and the fourth driving device 501 is used to drive the transmission belt 502 to rotate, and a fixing seat 602 is installed at the bottom of one side of the mounting base 500, and a waste box 603 is movably plugged into one side of the fixing seat 602. In this setting, the electromagnet 503 is powered by the transmission belt 502. When the quartz sand passes through the first magnetic separation component, the magnetic force of the electromagnet 503 adsorbs the magnetite in the quartz sand. At the same time, the fourth driving device 501 drives the transmission belt 502 to rotate, and makes the electromagnet 503 rotate accordingly. The electromagnet 503 transports the adsorbed magnetite to one side, and the magnetic force is reduced when it is transported to the specified position, so that the magnetite can be detached and fall, so as to achieve the preliminary magnetic separation of the quartz sand.

[0062] like Figure 7 , Figure 8 As shown, further, the second magnetic separation component includes a permanent magnet 504, which is fixedly mounted on a fixed bracket 306, a rotating drum 506 is mounted at one end of the permanent magnet 504, a belt 505 is mounted between the rotating drum 506 and the permanent magnet 504, a fifth driving device 507 is mounted at one end of the rotating drum 506, a fixed plate 600 is mounted at the bottom of the fixed bracket 306, a side guide plate 601 is mounted at the bottom of the fixed plate 600, and the bottom of the side guide plate 601 is aligned with the second conveyor belt 303. In this arrangement, the ground quartz sand passes through the guide trough 406 and falls to the inner side of the second conveyor belt 303. When passing through the second magnetic separation component, the permanent magnet 504 absorbs the fine magnetite. At the same time, the fifth drive device 507 drives the rotating drum 506 to rotate, and the rotating drum 506 drives the belt 505 to rotate, thereby moving the magnetite. When the magnetite moves to the rotating drum 506, the magnetic force on the magnetite is weakened and it falls into the waste box 603, and the screened quartz sand is discharged under the action of the side guide plate 601.

[0063] Embodiment 3:

[0064] like Figures 11 to 13 As shown, a high-purity quartz sand classification magnetic separation device also includes a processor, and the processor is configured with a control system for controlling the high-purity quartz sand classification magnetic separation device, and the control system includes a monitoring unit and a transportation execution unit;

[0065] The monitoring unit is used to monitor the volume of quartz sand passing through the laser radar within a unit distance;

[0066] The transport execution unit is used to control the transport speed of the first transport mechanism according to the instruction generated by the monitoring unit.

[0067] The monitoring unit includes a volume monitoring strategy, which includes obtaining the unit distance L of the movement of quartz sand, and the cross-sectional areas S1 and S2 at both ends of the quartz sand through lidar, and calculating the volume V of the quartz sand within the unit distance as V = (S1 + S2)L / 2, where the unit distance L is 0.1 cm;

[0068] The monitoring unit further includes a volume discrimination strategy, which includes configuring a volume upper limit threshold V0, and generating corresponding commands based on the size of the volume V of the quartz sand within the unit distance and the volume upper limit threshold V0. When V ≥ V0, it indicates that the volume has reached the volume upper limit threshold, and the first transportation mechanism needs to decelerate, and at the same time, a low-speed instruction is generated. When V < V0, it indicates that the volume is lower than the volume upper limit threshold, and the first transportation mechanism needs to accelerate, and at the same time, a high-speed instruction is generated.

[0069] The transportation execution unit includes a speed presetting strategy, which includes configuring a high speed V 高 and a low speed V 低 , where the high speed V 高 represents the speed after the first transportation mechanism accelerates, and the low speed V 低 represents the speed after the first transportation mechanism decelerates;

[0070] The transportation execution unit further includes a time judgment strategy, which includes obtaining the length s of the magnetic attraction area of the electromagnet 503, and calculating the time t for the quartz sand to pass through the magnetic attraction area of the electromagnet 503 in the low-speed state as t = s / V 低 ; 低 ;

[0071] The transportation execution unit further includes a speed adjustment strategy, which includes that when a low-speed instruction is obtained, the first transportation mechanism runs at the low speed V 低 , and at the same time records the start running time T. When the running time T ≥ t, it indicates that the current quartz sand has passed through the magnetic attraction area, and an end instruction is generated. Otherwise, it indicates that the current quartz sand is passing through the magnetic attraction area, and an empty instruction is generated;

[0072] The speed adjustment strategy further includes that when a high-speed instruction is obtained, the instruction generated by the speed adjustment strategy is obtained. When an end instruction is obtained, the first transportation mechanism runs at the high speed V 高 , indicating that the quartz sand in the current magnetic attraction area is transported at high speed. When an empty instruction is obtained, the first transportation mechanism runs at the low speed V 低 , indicating that the quartz sand in the current magnetic attraction area is transported at low speed;

[0073] Based on the above system, the first transportation mechanism moves slowly when there is a large accumulation of quartz sand, so that the magnetite in it can be more fully sucked out, and moves quickly when there is a small accumulation of quartz sand to improve work efficiency.

[0074] The control system further includes a magnetic force regulating unit, which includes a magnetic force regulating strategy, wherein the magnetic force regulating strategy includes setting a magnetic force constant region and a magnetic force attenuation region for the region between the two ends of the transmission belt, wherein the magnetic force constant region is located at the top of the first conveyor belt 203, indicating that the electromagnet 503 needs to maintain a constant magnetic force to adsorb the magnetite, and the magnetic force attenuation region is located in a complementary region of the magnetic force constant region, indicating that the magnetic force of the electromagnet 503 needs to be reduced to allow the magnetite to fall off;

[0075] The magnetic force regulation strategy also includes generating a magnetic force increase instruction when the electromagnet 503 enters a constant magnetic force region, and increasing and maintaining the magnetic force of the electromagnet 503 constant based on the magnetic force increase instruction, and generating a magnetic force attenuation instruction when the electromagnet 503 enters a magnetic force attenuation region, and reducing the magnetic force of the electromagnet 503 based on the magnetic force attenuation instruction.

[0076] The implementation principle of the high-purity quartz sand classification magnetic separation equipment of this embodiment is as follows: when working, the quartz sand to be processed is fed into the crushing tank 100 from the feed port 109, and the first driving device 108 is started. The first driving device 108 drives the turntable 106 to rotate, and the turntable 106 drives the eccentrically arranged support shaft 103 to revolve, thereby making the gear ring 104 revolve, and the gear ring 104 realizes self-rotation through the meshing action with the tooth groove 105, so that the crushing rotor 102 can rotate while revolving, and the quartz sand is preliminarily crushed. After the preliminarily crushing, impurities such as magnetite in the quartz sand are preliminarily separated;

[0077] After the preliminary crushing, the quartz sand falls onto the first conveyor belt 203 through the discharge port 107. At this time, the second driving device 202 drives the first roller 201 to rotate, so that the first conveyor belt 203 transports the quartz sand. When the quartz sand passes through the first magnetic separation component, the magnetic force of the electromagnet 503 adsorbs the magnetite in the quartz sand. At the same time, the fourth driving device 501 drives the transmission belt 502 to rotate, and the electromagnet 503 rotates accordingly. The electromagnet 503 transports the adsorbed magnetite to one side, and the magnetic force is reduced when it is transported to the designated position, so that the magnetite can fall off, thereby realizing the preliminary magnetic separation of the quartz sand.

[0078] After the magnetic separation, there is still some magnetite embedded in the quartz sand. At this time, the quartz sand needs to be ground more carefully. The quartz sand enters the second conveyor belt 303 under the action of the full separation component. The second conveyor belt 303 drives the quartz sand to fall on the top of the grinding rotor 401. At the same time, the third driving device 405 drives the grinding rotor 401 to rotate through the action of the sprocket 403 and the chain 404. The grinding rotor 401 drives the quartz sand to rotate and enters the feed port 402 under the action of the railing on the top of the grinding tank 400. The quartz sand is ground by the grinding rotor 401 and the grinding tank 400.

[0079] The ground quartz sand passes through the guide trough 406 and falls to the inner side of the second conveyor belt 303. When passing through the second magnetic separation component, the permanent magnet 504 absorbs the fine magnetite. At the same time, the fifth driving device 507 drives the rotating drum 506 to rotate, and the rotating drum 506 drives the belt 505 to rotate, thereby moving the magnetite. When the magnetite moves to the rotating drum 506, the magnetic force on the magnetite is weakened and it falls into the waste box 603. The screened quartz sand is discharged under the action of the side guide plate 601.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high-purity quartz sand classification magnetic separation equipment, characterized in that: include, A crushing mechanism, the crushing mechanism comprising a crushing tank (100), the inner wall of the crushing tank (100) being provided with a crushing groove (101), a crushing rotor (102) being arranged inside the crushing tank (100), and the crushing mechanism preliminarily crushing the quartz sand through the crushing rotor (102) and the crushing groove (101); A grinding mechanism, the grinding mechanism comprising a grinding groove (400), a grinding rotor (401) being rotatably connected inside the grinding groove (400), and the grinding mechanism grinds quartz sand through the grinding rotor (401) and the grinding groove (400); A multi-stage magnetic separation mechanism comprises a first magnetic separation component and a second magnetic separation component, wherein the first magnetic separation component and the second magnetic separation component are used for performing multi-stage magnetic separation on quartz sand by magnetic force.

2. A high-purity quartz sand classification magnetic separation equipment according to claim 1, characterized in that: The inner walls of the top and bottom of the crushing pot (100) are both provided with tooth grooves (105), and tooth rings (104) are meshedly connected in the tooth grooves (105). A support shaft (103) is fixedly installed between the upper and lower tooth rings (104). The crushing rotor (102) is fixedly connected to the support shaft (103), and a rotating disk (106) is rotatably connected to the top of the support shaft (103). A first driving device (108) is installed on the top of the crushing pot (100), and an output end of the first driving device (108) is fixedly connected to the rotating disk (106). A feed inlet (109) and a discharge outlet (107) are respectively provided on the top and bottom of the crushing pot (100).

3. A high-purity quartz sand classification magnetic separation equipment according to claim 2, characterized in that: A first transport mechanism is provided at the bottom of the crushing mechanism, the first transport mechanism comprising a first transport belt (203), the first transport belt (203) being meshedly connected with first rollers (201) at both ends, the first rollers (201) at both ends being rotatably mounted with a first mounting frame (200) and a second mounting frame (204), one side of one of the first rollers (201) being mounted with a second driving device (202), a full separation component being provided on the first transport belt (203), the full separation component comprising a guide plate (207), a guide plate (206) being mounted at the bottom of the guide plate (207), a roller (205) being mounted at the top of the guide plate (206), the roller (205) and the guide plate (207) being staggered, and one end of the roller (205) being fixedly connected to the second mounting frame (204) via a mounting plate.

4. A high-purity quartz sand classification magnetic separation equipment according to claim 3, characterized in that: A second transport mechanism is arranged on one side of the first transport mechanism, the second transport mechanism comprises a second transport belt (303), the second transport belt (303) is meshedly connected with a second roller (302) at both ends, the second transport belt (303) is movably connected with a plurality of guide rollers (305), a side base plate (304) is rotatably mounted at both ends of the plurality of guide rollers (305), the side base plate (304) is rotatably connected to the second roller (302) at one end thereof, a fixed bracket (306) is mounted at one end of the side base plate (304), one end of the fixed bracket (306) is fixedly connected to the second mounting frame (204), a protective shell (300) is mounted on the second mounting frame (204), a transmission device is arranged in the protective shell (300), the transmission device comprises a gear (301), the first roller (201) and the second roller (302) are connected by the meshing action of the gear (301).

5. A high-purity quartz sand classification magnetic separation equipment according to claim 4, characterized in that: The two ends of the grinding trough (400) are fixedly connected to the side base plates (304) on both sides; a third driving device (405) is installed on one side of the grinding trough (400); a linkage device is arranged between the third driving device (405) and the grinding rotor (401); the linkage device comprises a chain (404); two ends of the chain (404) are meshingly connected with sprockets (403); the sprockets (403) at both ends are respectively connected to the third driving device (405) and the grinding rotor (401); a material inlet (402) is provided on one side of the grinding rotor (401); a material guide trough (406) is installed on one side of the grinding trough (400); a limit plate (407) is installed on the top of the grinding trough (400); the limit plate (407) is aligned with the second conveyor belt (303).

6. A high-purity quartz sand classification magnetic separation equipment according to claim 5, characterized in that: The first magnetic separation component comprises a mounting base (500), and a laser radar is mounted on one side of the mounting base (500); a transmission belt (502) is mounted on the mounting base (500), and an electromagnet (503) is mounted on the transmission belt (502); a fourth driving device (501) is mounted on one side of the mounting base (500), and the fourth driving device (501) is used to drive the transmission belt (502) to rotate; a fixed seat (602) is mounted on the bottom of one side of the mounting base (500), and a waste box (603) is movably connected to one side of the fixed seat (602).

7. A high-purity quartz sand classification magnetic separation equipment according to claim 6, characterized in that: The second magnetic separation component comprises a permanent magnet (504), wherein the permanent magnet (504) is fixedly mounted on a fixed bracket (306), a rotating drum (506) is mounted on one end of the permanent magnet (504), a belt (505) is mounted between the rotating drum (506) and the permanent magnet (504), a fifth driving device (507) is mounted on one end of the rotating drum (506), a fixed plate (600) is mounted on the bottom of the fixed bracket (306), a side guide plate (601) is mounted on the bottom of the fixed plate (600), and the bottom of the side guide plate (601) is aligned with the second conveyor belt (303).

8. A high-purity quartz sand classification magnetic separation equipment according to claim 7, characterized in that: It further includes a processor, on which a control system for controlling the high-purity quartz sand classification magnetic separation equipment is configured, and the control system includes a monitoring unit and a transportation execution unit; The monitoring unit is used to monitor the volume of quartz sand passing through the lidar per unit distance; The transportation execution unit is used to control the transportation speed of the first transportation mechanism according to the instruction generated by the monitoring unit.

9. A high-purity quartz sand classification magnetic separation equipment according to claim 8, characterized in that: The monitoring unit includes a volume monitoring strategy, and the volume monitoring strategy includes obtaining the unit distance L of the movement of quartz sand, and the cross-sectional areas S1 and S2 at both ends of the quartz sand through the lidar, and calculating the volume V of the quartz sand per unit distance as V=(S1+S2)L / 2; The monitoring unit further includes a volume discrimination strategy, and the volume discrimination strategy includes being configured with a volume upper limit threshold V0, and generating corresponding commands based on the size of the volume V of the quartz sand per unit distance and the volume upper limit threshold V0. When V≥V0, it indicates that the volume reaches the volume upper limit threshold, and the first transportation mechanism needs to decelerate, and at the same time, a low-speed instruction is generated. When V<V0, it indicates that the volume is lower than the volume upper limit threshold, and the first transportation mechanism needs to accelerate, and at the same time, a high-speed instruction is generated.

10. A high-purity quartz sand classification magnetic separation equipment according to claim 9, characterized in that: The transport execution unit includes a speed preset strategy, wherein the speed preset strategy includes a high speed V 高 and low speed V 低 , the high speed V 高 Characterizes the speed of the first transport mechanism after acceleration, the low speed V 低 Characterizes the speed of the first transport mechanism after deceleration; The transport execution unit also includes a time judgment strategy, which includes obtaining the length s of the magnetic attraction area of ​​the electromagnet (503) and based on the low speed V 低 Calculate the time t=s / V low for the quartz sand to pass through the magnetic attraction area of ​​the electromagnet (503) at a low speed; The transport execution unit further includes a speed adjustment strategy, wherein when a low speed instruction is obtained, the first transport mechanism operates at a low speed V 低 Run, and record the start time T. When the running time T≥t, it indicates that the current quartz sand has passed through the magnetic attraction area, and an end instruction is generated. Otherwise, it indicates that the current quartz sand is passing through the magnetic attraction area, and an empty instruction is generated. The speed regulation strategy also includes obtaining an instruction generated by the speed regulation strategy when a high-speed instruction is obtained, and when an end instruction is obtained, the first transport mechanism is driven at a high speed V 高 Operation, indicating that the quartz sand in the current magnetic attraction area is transported at high speed. When the empty instruction is obtained, the first transport mechanism moves at a low speed V 低 Operation, characterizing the low-speed transportation of quartz sand in the current magnetic attraction area.

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