Ore sorting device

Abstract

The invention relates to the technical field of ore separation, and provides an ore separation device which comprises a screen box, a screen mesh, a material distribution groove body, a rotating shaft and a material distribution auger, the screen mesh is movably arranged relative to the screen box, the material distribution groove body is arranged on the screen box and located above the top end of the screen mesh, a discharging hole is formed in the bottom of the material distribution groove body, and the rotating shaft is rotationally arranged in the material distribution groove body; the material distribution auger is arranged on the rotating shaft, is divided into two sections, has opposite rotating directions and is used for pushing materials in the middle of the material distribution groove body to the two sides. By means of the technical scheme, the problem that in the prior art, ore particles located in the front end area of the vibrating screen cannot be evenly spread in the transverse direction in time is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ore sorting, and in particular to an ore sorting device. Background Art

[0002] Under the background of accelerating global industrialization, ore resources are key raw materials for many basic industries, and the efficiency and quality of their development and utilization play a vital role in the economic development and industrial competitiveness of various countries. With the continuous expansion of mining scale and the increasingly stringent requirements for the purity and quality of ore products, ore sorting technology faces unprecedented challenges and opportunities.

[0003] After the ore is mined and goes through a series of pre-treatment processes such as crushing, it enters the sorting stage. There are significant problems in the vibrating screen feeding link of the existing ore sorting device. After the ore has passed the previous crushing process, the distribution of large-particle ore and small-particle ore shows obvious unevenness. This uneven distribution directly leads to differences in material density in various places. Moreover, since the location of the crushed ore is relatively concentrated, when the material enters the top of the vibrating screen, it cannot be quickly and evenly laid along the horizontal direction of the vibrating screen. In the initial working stage of the vibrating screen, the materials are often piled together, and after a period of vibration and transportation, they are gradually spread out evenly. Under normal circumstances, the material can only be fully vibrated and screened until the last two-thirds of the vibrating screen. This situation greatly limits the efficiency and effect of vibrating screening. In the front one-third area of ​​the vibrating screen, due to the uneven distribution of materials, the screening process cannot be carried out effectively, resulting in many unqualified large-particle ores that may not be screened out in time and mixed into the subsequent process, reducing the quality of the concentrate; at the same time, the effective screening area of ​​the entire vibrating screen is not fully utilized, reducing the processing capacity of the equipment.

[0004] The existing technology has not solved the above problems well, which has brought troubles to the normal work in this field. Therefore, there is an urgent need for an ore sorting device to solve the above technical problems. Summary of the invention

[0005] The present invention provides an ore sorting device, which solves the problem in the related art that ore particles located in the front end area of ​​the vibrating screen cannot be evenly spread out in the horizontal direction in time.

[0006] The technical solution of the present invention is as follows: an ore sorting device, comprising a screen box, a screen, a distribution trough, a rotating shaft and a distribution auger, the screen is movably arranged relative to the screen box, the distribution trough is arranged on the screen box and is located above the top of the screen, the distribution trough has a discharge hole at the bottom, the rotating shaft is rotatably arranged in the distribution trough, the distribution auger is arranged on the rotating shaft, the distribution auger is divided into two sections and the rotation directions of the two sections are opposite, and it is used to push the material located in the middle of the distribution trough to both sides.

[0007] Optionally, the rotating shaft is provided with a water injection channel along its axial direction for connecting with an external water supply device, and the rotating shaft surface has a water outlet hole, and the water injection channel is connected with the water outlet hole.

[0008] Optionally, it also includes a stirring rod, which is arranged on the fabric auger, parallel to the rotating shaft, and there are multiple stirring rods that are parallel to each other.

[0009] Optionally, it also includes a feed plate, which is arranged on the distribution trough body, and the surface of the feed plate has a material guide groove, the discharge end of the material guide groove faces the middle of the distribution trough body, and the surface of the feed plate also has a buffer layer.

[0010] Optionally, it also includes a connecting rod and a vibration motor. There are multiple screens, and the connecting rod is simultaneously arranged on the sides of the multiple screens. The vibration motor is arranged on the screen box, and the vibration motor is drivingly connected to the connecting rod to drive the screen to vibrate.

[0011] Optionally, it also includes an atomizing nozzle and a high-pressure nozzle, and the atomizing nozzle and the high-pressure nozzle are both used to be set in the screen box and are both facing the bottom surface of the screen.

[0012] Optionally, it also includes an inner tube and an outer tube, the inner tube is arranged in the screen box, and is used to connect to an external water supply device, the inner tube has a plurality of through holes, the outer tube is rotatably and slidably arranged on the inner tube, the atomizing nozzle and the high-pressure nozzle are both arranged on the outer tube, and after the outer tube slides, it is used to connect the through holes with the atomizing nozzle or the high-pressure nozzle.

[0013] Optionally, a locking bolt is further included, wherein the locking bolt is threadedly connected to the outer tube and is used to tighten the outer wall of the inner tube.

[0014] Optionally, the outer tube has a sliding portion, the inner tube has a limiting portion, there are two limiting portions, and the sliding portion is located between the two limiting portions, for limiting the extreme sliding position of the outer tube.

[0015] Optionally, a handwheel is coaxially arranged on the outer tube.

[0016] The working principle and beneficial effects of the present invention are: The material of the screen box is high-strength steel to withstand the impact and vibration of ore particles during the screening process. The screen is connected to the screen box through a suspension device so that the screen can move relative to the screen box. The suspension device can use elastic elements, such as springs, to ensure that the screen has a certain elastic buffer during normal operation and to ensure that it maintains a stable screening action during vibration. The distribution trough is welded above the top of the screen box. The size of the discharge hole at the bottom of the distribution trough is designed according to the average particle size of the ore, generally 0.5-0.8 times the maximum particle size of the ore, to prevent ore particles from blocking the discharge hole and ensure the uniformity of the distribution. The two sections of the distribution augers have opposite rotation directions, and a smooth transition design is used at the connection to prevent the material from getting stuck at the transition.

[0017] When the ore particles are transported from the crushing process, they first enter the middle of the feeding trough. At this time, the drive device (such as a motor) of the rotating shaft is started to drive the rotating shaft to rotate. Since the two sections of the feeding auger rotate in opposite directions, the ore particles in the middle of the feeding trough will be pushed to both sides. The ore particles are evenly discharged from the discharge hole at the bottom of the feeding trough, forming a material layer that is evenly spread horizontally and falls directly on the screen below. The screen begins to vibrate and screen under the action of a vibrating device (such as a vibrating motor). Since the material has been evenly spread before entering the screen, each area of ​​the entire screen can fully contact with the ore particles from the beginning, achieving efficient vibration screening.

[0018] The material is evenly spread out horizontally in the material distributing trough through the material distributing auger and then dropped onto the screen, so that the screen can screen the material comprehensively and effectively from the front end, making full use of the effective area of ​​the screen, and avoiding the situation in which the front half of the screen in the traditional device cannot work fully due to material accumulation. Since the material is evenly distributed, all parts of the screen can be evenly stressed, reducing the problem of uneven wear of the screen caused by local material accumulation and extending the service life of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0020] Figure 1 This is a schematic structural diagram of an ore sorting device from one angle; Figure 2 It is a schematic diagram of the structure of an ore sorting device from another angle; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 It is a structural schematic diagram of the material distribution trough at one angle; Figure 5 It is a schematic diagram of the structure of the material distribution trough from another angle; Figure 6 It is the structural schematic diagram of the screen box; Figure 7 is a schematic diagram of the structure of the screen; Figure 8 is a schematic diagram of the structure of the outer tube; Fig. 9 for Figure 8 Enlarged view of point B in the middle; Fig.10 Schematic diagram of the internal structure of the outer tube; Fig.11 It is a structural schematic diagram of the inner tube; Fig.12 It is a structural schematic diagram of the hopper at one angle; Fig.13 for Fig.12 Enlarged view of point C in the middle; Fig.14 It is a structural schematic diagram of the hopper from another angle; Fig.15 for Fig.14 Enlarged view of point D in the middle; Fig.16 This is a schematic diagram of the structure of the slide.

[0021] In the figure: 1. screen box, 2. screen, 3. material distribution trough, 4. rotating shaft, 5. material distribution auger, 6. material discharge hole, 7. water injection channel, 8. water discharge hole, 9. stirring rod, 10. feed plate, 11. material guide trough, 12. buffer layer, 13. connecting rod, 14. vibration motor, 15. atomizing nozzle, 16. high-pressure nozzle, 17. inner tube, 18. outer tube, 19. through hole, 20. locking bolt, 21. sliding part, 22. limiting part, 23. hand wheel, 24. hopper, 25. crushing roller, 26. slideway, 27. sliding rod, 28. pressure rod, 29. torsion spring, 30. strip through groove, 31. telescopic part, 32. supporting part. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0023] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0024] In this document, it should be noted that, 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] Reference Figure 1 to Figure 16 , which is the first embodiment of the present invention, proposes an ore sorting device, including a screen box 1, a screen 2, a distribution trough 3, a rotating shaft 4 and a distribution auger 5, the screen 2 is movably arranged relative to the screen box 1, the distribution trough 3 is arranged on the screen box 1 and is located above the top of the screen 2, the distribution trough 3 has a discharge hole 6 at the bottom, the rotating shaft 4 is rotatably arranged in the distribution trough 3, the distribution auger 5 is arranged on the rotating shaft 4, the distribution auger 5 is divided into two sections and the rotation directions of the two sections are opposite, and are used to push the material located in the middle of the distribution trough 3 to both sides.

[0027] In this embodiment, the material of the screen box 1 is selected from high-strength steel to withstand the impact and vibration of the ore particles during the screening process. The screen 2 is connected to the screen box 1 through a suspension device so that the screen 2 can move relative to the screen box 1. The suspension device can use elastic elements, such as springs, which can not only ensure that the screen 2 has a certain elastic buffer during normal operation, but also ensure that it maintains a stable screening action during vibration. The distribution trough 3 is welded above the top of the screen box 1. The size of the discharge hole 6 at the bottom of the distribution trough 3 is designed according to the average particle size of the ore, generally 0.5-0.8 times the maximum particle size of the ore, to prevent the ore particles from blocking the discharge hole 6, while ensuring the uniformity of the distribution. The rotation directions of the two sections of the distribution augers 5 are opposite, and a smooth transition design is adopted at the connection to avoid the material from getting stuck at the transition.

[0028] After the ore particles are transported from the crushing process, they first enter the middle position of the feeding trough 3. At this time, the driving device (such as a motor) of the rotating shaft 4 is started to drive the rotating shaft 4 to rotate. Since the two sections of the feeding auger 5 rotate in opposite directions, the ore particles located in the middle of the feeding trough 3 will be pushed to both sides. The ore particles are evenly discharged from the discharge hole 6 at the bottom of the feeding trough 3, forming a material layer that is evenly spread laterally, and directly falls on the screen 2 below. The screen 2 begins to vibrate and screen under the action of a vibration device (such as a vibration motor 14). Since the material has been evenly spread before entering the screen 2, each area of ​​the entire screen 2 can fully contact with the ore particles from the beginning, achieving efficient vibration screening.

[0029] The material is evenly spread out in the material distributing trough 3 by the material distributing auger 5 and then dropped onto the screen 2, so that the screen 2 can screen the material comprehensively and effectively from the front end, making full use of the effective area of ​​the screen 2, and avoiding the situation in which the front half of the screen 2 in the traditional device cannot work fully due to material accumulation. Since the material is evenly distributed, each part of the screen 2 can be evenly stressed, reducing the problem of uneven wear of the screen 2 caused by local material accumulation, and extending the service life of the screen 2.

[0030] In order to ensure the uniformity of the particle size of the ore particles entering the feeding trough 3, the present device is also provided with a roller crushing mechanism at the front end of the feeding trough 3. The roller crushing mechanism includes a hopper 24 and two crushing rollers 25 rotating in opposite directions, which can convey materials with uniform particle size to the feeding trough 3. In order to prevent individual large-size ores from being accumulated above the two crushing rollers 25 and unable to enter between the two crushing rollers 25, the roller crushing mechanism is further provided with a material pressing structure. The material pressing structure includes a slide 26 arranged on the inner wall of the hopper 24, and a slide bar 27 and a pressure bar 28 slidingly arranged in the slide. The ends of the slide bar 27 and the pressure bar 28 are hinged, and a torsion spring 29 is installed at the hinge point. The torsion spring 29 is used to provide a force for the pressure bar 28 to swing toward the crushing roller 25. The side wall of the hopper 24 has a strip-shaped through slot 30 , the bottom end of the slide bar 27 protrudes out of the strip-shaped through slot 30 and is connected to the telescopic end of the telescopic member 31 , and the telescopic member 31 is installed on the outer wall of the hopper 24 to drive the slide bar 27 and the pressure rod 28 to slide.

[0031] When some large-size ores are accumulated above the two crushing rollers 25 and cannot enter between the two crushing rollers 25, the sliding rod 27 and the pressure rod 28 can be driven to slide upward by the telescopic member 31. When the pressure rod 28 is completely extended out of the slideway, the pressure rod 28 swings toward the crushing roller 25 under the action of the torsion spring 29, thereby exerting pressure on the ores accumulated above the two crushing rollers 25 and helping them enter between the two crushing rollers 25. In order to make the length of the pressure rod 28 more reasonable, slideways 26 are provided on the inner walls on both sides of the hopper 24 to avoid using a single pressure rod 28 that is too long. In order to prevent the pressure rod 28 from swinging too much and contacting the crushing roller 25 and causing damage, a supporting portion 32 is also provided on the top of the slideway 26 to limit the maximum swing range of the pressure rod 28 and improve safety.

[0032] Furthermore, the rotating shaft 4 is provided with a water injection channel 7 along its axial direction for connecting with an external water supply device. The rotating shaft 4 has a water outlet hole 8 on its surface, and the water injection channel 7 is communicated with the water outlet hole 8 .

[0033] Furthermore, it also includes a stirring rod 9, which is arranged on the cloth auger 5, and the stirring rod 9 is parallel to the rotating shaft 4. There are multiple stirring rods 9 and they are parallel to each other.

[0034] In this embodiment, the stirring rod 9 is made of high-strength alloy material with good wear resistance and rigidity. After the ore particles enter the feeding trough 3, the feeding auger 5 starts to rotate under the drive of the rotating shaft 4, pushing the ore particles to both sides. At the same time, the stirring rod 9 stirs the ore particles as the feeding auger 5 rotates, causing the ore particles to roll continuously in the feeding trough 3.

[0035] An external water supply device (such as a water pump) connects water to the water injection channel 7 of the rotating shaft 4 through a pipe. Water enters the water injection channel 7 under pressure and overflows from the water outlet 8 on the surface of the rotating shaft 4. Due to the push of the material distribution auger 5 and the stirring action of the stirring rod 9, the ore particles are in a state of continuous movement, and the sprayed water can be evenly sprinkled on all surfaces of the ore particles and fully contact with the ore particles.

[0036] After water injection and stirring, the ore particles are discharged from the discharge hole 6 at the bottom of the feeding trough 3 and fall onto the screen 2 for vibration screening. Since the ore particles have been fully moistened and the dust and sticky substances on the surface have been effectively processed, they can pass through the screen holes more smoothly during screening, reducing the possibility of clogging the screen holes and improving the screening efficiency.

[0037] Compared with the traditional method of installing a nozzle only on the top of the screen box 1, this device directly injects water at the material distribution auger 5 and combines the stirring of the stirring rod 9 to allow water to penetrate into the material layer of the ore particles, ensuring that all parts of the ore particles can fully contact the water. The uniform wetting effect makes it difficult for the ore particles to agglomerate or clump due to uneven water distribution during the subsequent screening process, ensuring the stability and continuity of the screening process. Since the ore particles are fully moistened and the viscosity is reduced, the friction between the ore particles and between the ore particles and the sieve holes is reduced during the screening process, and the clogging of the sieve holes is greatly reduced. The ore particles are moistened by water injection in the distribution trough 3, which can suppress dust generation earlier than the traditional method of sprinkling water on the screen 2. A large amount of dust generated during the crushing and transportation of ore particles will be adsorbed and settled by water after entering the distribution trough 3, reducing the diffusion of dust to the surrounding environment.

[0038] Furthermore, it also includes a feed plate 10, which is arranged on the distribution trough body 3. The surface of the feed plate 10 has a guide groove 11, and the discharge end of the guide groove 11 faces the middle of the distribution trough body 3. The surface of the feed plate 10 also has a buffer layer 12.

[0039] In this embodiment, the buffer layer 12 on the surface of the feed plate 10 is made of a wear-resistant, impact-resistant and elastic rubber material. When the ore is transported from the crushing process to the feed plate 10, it first contacts the buffer layer 12 on the surface of the feed plate 10. Due to the flexibility of the buffer layer 12, the impact force of the falling ore is greatly reduced, avoiding direct impact damage to the feed plate 10 itself and the subsequent material distribution auger 5, and significantly reducing the noise generated by the collision of the ore and the equipment components.

[0040] The ore slides along the direction of the guide trough 11 on the feed plate 10, and under the guidance of gravity and the guide trough 11, the ore accurately falls into the middle of the distribution trough body 3, providing a good initial condition for the distribution auger 5 to achieve accurate bidirectional uniform distribution. The ore that falls into the middle of the distribution trough body 3 begins to be evenly pushed to both sides under the action of the distribution auger 5, and enters the subsequent distribution and screening process.

[0041] Furthermore, it also includes a connecting rod 13 and a vibration motor 14. There are multiple screens 2. The connecting rod 13 is simultaneously arranged on the sides of multiple screens 2. The vibration motor 14 is arranged on the screen box 1. The vibration motor 14 is driven and connected to the connecting rod 13 to drive the screen 2 to vibrate.

[0042] In this embodiment, the arrangement of the multi-layer screen 2 can separate ore particles of various particle size ranges, which greatly improves the degree of refinement of screening, production efficiency and resource utilization compared to the traditional single screen 2 sorting device. Multiple screens 2 are made of high-strength metal materials, and their mesh sizes decrease step by step from top to bottom. The frame of the screen 2 is made of angle steel or square steel to ensure its structural strength. The connecting rod 13 is firmly connected to the side of the multiple screens 2 by welding or connecting fasteners to ensure that the relative positions between the screens 2 are stable and move synchronously during the vibration process.

[0043] The conventional sorting device is to set the screen box 1 and the screen 2 as one body and elastically mount them on the base. However, the vibration of the screen box 1 requires the power of the vibration motor 14 to be large enough, and there is also the problem that the vibration force is too large and easy to be damaged. In this scheme, the vibration motor 14 is installed on the outer wall of the screen box 1, and the vibration motor 14 is connected to the connecting rod 13. When the vibration motor 14 is started, the rotational motion generated by it is converted into the reciprocating linear motion of the connecting rod 13 through the coupling or the transmission rod. The connecting rod 13 drives the multiple screens 2 connected thereto to vibrate synchronously. Since the screen 2 and the screen box 1 are no longer integrated, the screen 2 can vibrate independently under the drive of the connecting rod 13. In the whole process, since the vibration motor 14 only needs to drive the relatively light screen 2 and the connecting rod 13 system, compared with the traditional drive of the entire screen box 1 and the screen 2 integrated structure, the required power is significantly reduced, and the screen 2 and the connecting rod 13 are subjected to a more reasonable vibration force, which reduces the risk of damage. The structural design of separating the screen 2 from the screen box 1 makes the replacement and maintenance of the screen 2 more convenient and quick. When a certain layer of screen 2 is damaged or the mesh size needs to be changed to meet different ore screening requirements, only the layer of screen 2 needs to be removed and replaced.

[0044] Furthermore, it also includes an atomizing nozzle 15 and a high-pressure nozzle 16 , and the atomizing nozzle 15 and the high-pressure nozzle 16 are both used to be arranged in the screen box 1 and are both facing the bottom surface of the screen 2 .

[0045] It also includes an inner tube 17 and an outer tube 18. The inner tube 17 is arranged in the screen box 1 and is used to be connected to an external water supply device. The inner tube 17 has a plurality of through holes 19. The outer tube 18 is rotatably and slidably arranged on the inner tube 17. The atomizing nozzle 15 and the high-pressure nozzle 16 are both arranged on the outer tube 18. After the outer tube 18 slides, it is used to connect the through holes 19 with the atomizing nozzle 15 or the high-pressure nozzle 16.

[0046] In this embodiment, when the device is working normally, the outer tube 18 is in the initial position, and the through hole 19 on the inner tube 17 is connected to the atomizing nozzle 15. The external water supply device supplies water at a relatively low pressure, and the water enters the atomizing nozzle 15 through the through hole 19 of the inner tube 17. The atomizing nozzle 15 atomizes the water and sprays it onto the bottom surface of the screen 2. The water mist at this time can effectively suppress the dust generated by the screen 2 during the screening process, so that the screen box 1 maintains a relatively clean environment, and reduces the pollution and wear of the internal components of the device by dust.

[0047] After the equipment has been running for a period of time, if it is found that the screen 2 is partially blocked or the screen 2 needs to be cleaned according to the preset time interval, the outer tube 18 is pushed to slide along the inner tube 17 by a manual or automatic control device, so that the through hole 19 of the inner tube 17 is connected to the high-pressure nozzle 16. At the same time, the water pressure of the external water supply device is increased, and the high-pressure water enters the high-pressure nozzle 16 through the through hole 19, and the high-pressure nozzle 16 sprays a relatively concentrated and strong water flow to the bottom surface of the screen 2. During the flushing process, the injection angle of the high-pressure nozzle 16 can be adjusted by rotating the outer tube 18, so that the water flow can cover the entire bottom surface of the screen 2 or focus on flushing the blocked area. Since the outer tube 18 is laid on the edge of the screen box 1, the ore particles will not contact the outer tube 18 and the nozzle, and will not cause damage to the nozzle or affect the normal screening work. After the flushing is completed, the outer tube 18 is slid back to the initial position, the working state of the atomizing nozzle 15 is restored, and the dust suppression operation is continued.

[0048] The atomizing nozzle 15 uses a fine atomizing nozzle, which can atomize water into tiny particles, and its spray angle is between 60-90 degrees, ensuring that a larger area of ​​the bottom surface of the screen 2 can be covered. The high-pressure nozzle 16 uses a direct-injection nozzle with a nozzle aperture of between 1-3 mm, which can generate a strong water flow for cleaning the screen 2. The shape of the water flow is not limited to a columnar shape, but can be a fan shape, etc., which can better adapt to the area of ​​the screen 2.

[0049] The inner tube 17 is fixedly installed at the edge of the screen box 1 and fixed by welding or pipe clamps to ensure its stable position. The through hole 19 on the inner tube 17 is designed to be strip-shaped, and the length of the through hole 19 is determined according to the rotation range of the high-pressure nozzle 16 to ensure that it can always maintain communication with the high-pressure nozzle 16 when the outer tube 18 is rotated. The inner diameter of the outer tube 18 is slightly larger than the outer diameter of the inner tube 17, so that it can rotate and slide relative to the inner tube 17. The connection between the outer tube 18 and the atomizing nozzle 15 and the high-pressure nozzle 16 adopts a sealed threaded connection to ensure a tight connection without water leakage.

[0050] Compared with the traditional method of only setting a nozzle outside the screen box 1, it is more direct and effective to suppress the dust generated by the screen 2 during the screening process. The setting of the high-pressure nozzle 16 provides a convenient and effective means for cleaning the screen 2. When the screen 2 is blocked, it can be switched to the high-pressure flushing mode in time, and the impact force of the high-pressure water flow can be used to flush away the ore particles blocking the screen holes, so as to restore the screening performance of the screen 2.

[0051] Furthermore, a locking bolt 20 is included. The locking bolt 20 is threadedly connected to the outer tube 18 and is used to tighten the outer wall of the inner tube 17 .

[0052] The outer tube 18 has a sliding portion 21 , and the inner tube 17 has a limiting portion 22 . There are two limiting portions 22 , and the sliding portion 21 is located between the two limiting portions 22 to limit the sliding limit position of the outer tube 18 .

[0053] A hand wheel 23 is coaxially arranged on the outer tube 18 .

[0054] In this embodiment, when the equipment is operating normally to suppress dust, the outer tube 18 is in the initial position, and the sliding portion 21 abuts against the limiting portion 22 of the corresponding atomizing nozzle 15. The through hole 19 on the inner tube 17 is precisely connected to the atomizing nozzle 15, and the locking bolt 20 is in a tightened state, so that the outer tube 18 is fixed on the inner tube 17. At this time, the atomizing nozzle 15 works stably, and the sprayed water mist effectively suppresses the dust in the screen box 1.

[0055] When it is necessary to switch to the high-pressure nozzle 16 to clean the screen 2, first loosen the locking bolt 20, and then push the outer tube 18 to slide along the inner tube 17 to the corresponding limit portion 22 of the high-pressure nozzle 16 through the hand wheel 23. When the sliding portion 21 of the outer tube 18 abuts against the limit portion 22, it indicates that the high-pressure nozzle 16 has been accurately aligned with the position of the through hole 19 of the inner tube 17, and the outer tube 18 is stopped at this time. Then increase the water pressure of the external water supply device, and the high-pressure nozzle 16 starts to work to flush the screen 2. During the flushing process, if it is necessary to adjust the spray angle of the high-pressure nozzle 16, the operator can rotate the outer tube 18 through the hand wheel 23. Due to the limitation of the limit portion 22, the outer tube 18 can only rotate within a certain range, thereby ensuring the safety of the rotation of the outer tube 18 and the accuracy of the angle adjustment of the high-pressure nozzle 16.

[0056] The setting of the two limit parts 22 ensures the accuracy of the outer tube 18 in the working position of the atomizing nozzle 15 and the working position of the high-pressure nozzle 16, avoiding the problem of poor or impossible connection between the nozzle and the through hole 19 of the inner tube 17 due to the deviation of the sliding position of the outer tube 18. The locking bolt 20 provides a reliable fixation for the outer tube 18 in different working positions to prevent the outer tube 18 from being displaced due to vibration or other external factors during the operation of the equipment. The setting of the handwheel 23 greatly facilitates the operator's rotation and sliding operation of the outer tube 18, without the need for complex tools, reducing the operator's labor intensity and operating difficulty.

[0057] 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. An ore sorting device, characterized in that: The invention comprises a screen box (1), a screen (2), a material distribution trough (3), a rotating shaft (4) and a material distribution auger (5), wherein the screen (2) is movably arranged relative to the screen box (1), the material distribution trough (3) is arranged on the screen box (1) and is located above the top of the screen (2), the material distribution trough (3) has a discharge hole (6) at the bottom, the rotating shaft (4) is rotatably arranged in the material distribution trough (3), the material distribution auger (5) is arranged on the rotating shaft (4), and the material distribution auger (5) is divided into two sections and the rotation directions of the two sections are opposite, and is used to push the material located in the middle of the material distribution trough (3) to both sides.

2. An ore separation device according to claim 1, characterized in that: The rotating shaft (4) is provided with a water injection channel (7) along its axial direction for connecting to an external water supply device. The rotating shaft (4) has a water outlet hole (8) on its surface, and the water injection channel (7) is in communication with the water outlet hole (8).

3. The ore separation device according to claim 1, characterized in that: It also comprises a stirring rod (9), wherein the stirring rod (9) is arranged on the cloth auger (5), the stirring rod (9) is parallel to the rotating shaft (4), and there are multiple stirring rods (9) which are parallel to each other.

4. The ore separation device according to claim 1, characterized in that: It also comprises a feed plate (10), the feed plate (10) being arranged on the material distribution trough body (3), the surface of the feed plate (10) having a material guide trough (11), the discharge end of the material guide trough (11) facing the middle of the material distribution trough body (3), and the surface of the feed plate (10) also having a buffer layer (12).

5. The ore separation device according to claim 1, characterized in that: It also includes a connecting rod (13) and a vibration motor (14); there are a plurality of screens (2); the connecting rod (13) is simultaneously arranged on the sides of the plurality of screens (2); the vibration motor (14) is arranged on the screen box (1); the vibration motor (14) is drivingly connected to the connecting rod (13) and is used to drive the screen (2) to generate vibration.

6. The ore separation device according to claim 1, characterized in that: It also includes an atomizing nozzle (15) and a high-pressure nozzle (16), wherein the atomizing nozzle (15) and the high-pressure nozzle (16) are both used to be arranged in the screen box (1) and are both facing the bottom surface of the screen (2).

7. An ore separation device according to claim 6, characterized in that: The invention also comprises an inner tube (17) and an outer tube (18), wherein the inner tube (17) is arranged in the screen box (1) and is used to be connected to an external water supply device, the inner tube (17) has a plurality of through holes (19), the outer tube (18) is rotatably and slidably arranged on the inner tube (17), the atomizing nozzle (15) and the high-pressure nozzle (16) are both arranged on the outer tube (18), and after the outer tube (18) slides, the through holes (19) are connected to the atomizing nozzle (15) or the high-pressure nozzle (16).

8. An ore separation device according to claim 7, characterized in that: It also includes a locking bolt (20), which is threadedly connected to the outer tube (18) and is used to tighten against the outer wall of the inner tube (17).

9. An ore separation device according to claim 8, characterized in that: The outer tube (18) has a sliding portion (21), and the inner tube (17) has a limiting portion (22). There are two limiting portions (22), and the sliding portion (21) is located between the two limiting portions (22) and is used to limit the sliding limit position of the outer tube (18).

10. An ore separation device according to claim 9, characterized in that: A hand wheel (23) is coaxially arranged on the outer tube (18).

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