A screening device and screening process for metal minerals

Abstract

The present invention discloses a screening device for metal minerals, including a device housing, a feeding component, a primary screening component and a secondary screening component, wherein the feeding component, the primary screening component and the secondary screening component are arranged in sequence from top to bottom, and the feeding component, the primary screening component and the secondary screening component are all arranged inside the device housing. The present invention also discloses a screening process for a screening device for metal minerals, including crushing, feeding, primary screening and secondary screening. The present invention arranges a device housing, and arranges a feeding component, a primary screening component and a secondary screening component inside the device housing, and the raw materials can pass through the feeding component, the primary screening component and the secondary screening component in sequence, wherein the primary screening component can realize the screening of the raw material particle size, and the secondary screening component can realize the screening of the raw material material, so as to achieve the purpose of screening metal minerals. Moreover, the screen can be automatically cleaned to improve the screening effect.

Description

Technical Field

[0001] The invention relates to the technical field of mineral screening, and in particular to a screening device and a screening process for metal minerals. Background Art

[0002] Minerals are natural compounds with a certain chemical composition, which have stable phase interfaces and crystallization habits. Generally, minerals are obtained by collecting ores, crushing them, screening them, and finally refining them to obtain the desired minerals.

[0003] The Chinese patent with the publication number CN112170183B discloses a multi-stage mineral screening device, the screening device includes a mounting frame, a first fixed plate is fastened on the mounting frame, a first screen for screening minerals is fastened on the first fixed plate, a belt is fastened on one side of the mounting frame, a second fixed plate is rotatably provided on the mounting frame, a second screen is rotatably provided on the second fixed plate, the second fixed plate is located below the first fixed plate, the mounting frame includes a frame, a first conveyor belt for conveying minerals is fastened in the frame, a second conveyor belt is fastened on one side of the frame, a third conveyor belt is fastened on the other side, a first hydraulic rod is rotatably provided on one side of the frame, a connecting piece is fastened on the first hydraulic rod, and connecting holes are provided on both sides of the frame. In the screening device of the present invention, the first screen is composed of a plurality of first screen rods, and different screen holes are provided on the first screen rods, so that the screen holes can be adjusted conveniently and the efficiency can be improved. A baffle is provided to control the unloading of the unloading box, and the unloading of multiple unloading ports is uniform, so as to improve the screening effect and the structure is simple.

[0004] The above technical solution ensures the screening effect of minerals by multi-stage screening. However, the above technical solution can only achieve the screening of mineral particle size, but it is difficult to achieve the screening of mineral materials. When screening metal minerals, it is difficult to achieve the screening and extraction of metal minerals. Moreover, affected by the humidity and particle size of the raw materials, the screen is easily blocked, affecting the screening efficiency. The manual shutdown to clean the screen not only increases the workload, but also affects the production efficiency.

[0005] Therefore, it is necessary to invent a screening device and a screening process for metal minerals to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a screening device and a screening process for metal minerals to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a screening device for metal minerals, comprising a device shell, a feeding assembly, a primary screening assembly and a secondary screening assembly; the device shell comprises an outer shell body, the outer shell body is configured as a cylindrical structure, and a mounting seat with an annular structure is fixedly arranged on the top of the outer shell body; the primary screening assembly comprises a fixing seat with an annular structure, and the fixing seat is fixedly arranged on the inner top of the outer shell body, a connecting seat with an annular structure is arranged above the fixing seat, and the connecting seat is movably arranged on the middle part of the lower surface of the top plate through a bearing; a material guide cover is fixedly arranged on the middle part of the lower surface of the connecting seat, and the material guide cover is configured as a funnel structure, a movable cover is arranged below the material guide cover, the movable cover passes through the interior of the fixing seat, and the movable cover is configured as an inverted funnel structure, the movable cover A screen with a funnel structure is fixedly arranged inside the interior; an elastic rope is connected to the bottom of the screen, and a vibrating ball is arranged at the lower end of the elastic rope; a transmission plate with an annular structure is arranged around the top of the outer wall of the movable cover, a protrusion is fixedly arranged on the upper surface of the transmission plate, a turntable is arranged on one side of the transmission plate, a plurality of pressure blocks corresponding to the protrusions are arranged around the lower surface of the turntable, and the pressure blocks are arranged in a hemispherical structure; a rotating rod is slidably connected to the middle part of the turntable, a driving motor is fixedly arranged at the bottom end of the rotating rod, and the driving motor is fixedly arranged on the lower surface of the fixed seat, a driving gear is fixedly arranged on the top of the rotating rod, a ring gear is arranged on one side of the driving gear, and the ring gear is fixedly arranged on the outer bottom end of the connecting seat; a telescopic rod is provided on the turntable, and the upper end of the telescopic rod is connected to the driving gear.

[0008] Preferably, the feeding assembly, the primary screening assembly and the secondary screening assembly are arranged in sequence from top to bottom, and the feeding assembly, the primary screening assembly and the secondary screening assembly are all arranged inside the device housing.

[0009] Preferably, the feeding assembly includes a top plate, which is arranged inside the mounting seat, a feeding hopper with a funnel structure is passed through the middle of the top plate, and a fixing block with a conical structure is fixed inside the feeding hopper.

[0010] Preferably, a bellows is fixedly provided at the top of the movable cover, a connecting plate with an annular structure is fixedly provided at the top of the bellows, and the connecting plate is movably provided at the bottom end of the material guide cover through a bearing, a plurality of sliding sleeves are provided around the top of the outer wall of the movable cover, a sliding rod is provided through the interior of the sliding sleeve, the sliding rod is fixedly provided on the upper surface of the fixed seat, and a spring is provided around the outer side of the sliding rod.

[0011] Preferably, a through groove is provided at the bottom end of the screen, a discharge pipe is provided inside the through groove, and one end of the discharge pipe is provided on the outer wall of the outer shell, and a sealing plate is fixedly provided at the bottom end of the movable cover, and the sealing plate is provided inside the outer shell.

[0012] Preferably, the secondary screening assembly includes a support seat, and the support seat is fixedly arranged at the inner bottom end of the outer shell.

[0013] Preferably, a transmission shaft is provided through the middle of the support seat, a material distribution cover is fixedly provided on the top of the transmission shaft, the material distribution cover is provided as a boss structure, and the material distribution cover is movably provided on the upper surface of the support seat through a bearing, a plurality of electromagnets are provided around the top of the inner wall of the material distribution cover, and the electromagnets are provided as a fan-shaped structure, a plurality of lower material covers are provided around the outer side of the material distribution cover, and the lower material cover is provided through the bottom end of the outer wall of the outer shell.

[0014] Preferably, an extension plate is fixedly provided on the inner top end of the lower material hood, and a lower material plate and a material guide plate are fixedly provided on both sides of the lower surface of the extension plate, the lower surface of the lower material plate is in contact with the upper surface of the material distribution hood, the material guide plate is arranged above the material distribution hood, and a material guide block with a hemispherical structure is provided at one end of the extension plate, and the material guide block is fixedly provided at the top end of the material distribution hood.

[0015] Preferably, contacts are fixedly provided at both ends of the electromagnet, a conductive ring and a conductive column are fixedly provided on the upper surface of the support seat, the tops of the conductive rings and the conductive columns are surrounded by a plurality of conductive plates with arc-shaped structures, and the conductive plates and the discharge covers are staggered, a feeding motor is fixedly provided at the bottom end of the transmission shaft, and the feeding motor is fixedly provided at the bottom end of the outer shell, a plurality of feeding pipes are provided on the outside of the feeding motor, and the feeding pipes are penetrated through the bottom end of the outer shell.

[0016] A screening process of a metal mineral screening device, wherein the screening process uses the above-mentioned screening device to screen materials, comprising the following steps:

[0017] Step 1: crushing: using a crusher to crush the metal minerals to be screened;

[0018] Step 2: feeding, feeding the metal mineral mixture to be screened into the device through the feeding component, and the metal mineral and the mixture enter the primary screening component along the feeding component;

[0019] Step 3: Primary screening: After the metal mineral mixture enters the primary screening component, the screen in the primary screening component screens the particle size of the mixture. The raw material mixture with larger particles is discharged from the device, and the mixture that meets the standard moves downward to the secondary screening component;

[0020] Step 4: Secondary screening: The secondary screening component screens the magnetic metal minerals in the mixture by magnetic separation, and the screened metal minerals are discharged and collected through the lower material cover.

[0021] Technical effects and advantages of the present invention:

[0022] 1. The present invention sets a device housing, and sets a feeding assembly, a primary screening assembly and a secondary screening assembly inside the device housing. The raw material can pass through the feeding assembly, the primary screening assembly and the secondary screening assembly in sequence, wherein the primary screening assembly can realize the screening of the raw material particle size, and the secondary screening assembly can realize the screening of the raw material material, so as to achieve the purpose of screening metal minerals;

[0023] 2. The present invention sets a first-stage screening component, which includes a rotatable material guide cover and a fixed screen. During the feeding process of the raw materials, the material guide cover can drive the raw materials to rotate, so that the raw materials can slide downward in a spiral manner along the inner wall of the material guide cover under the action of centrifugal force. When the raw materials enter the screen, they can slide along the inner wall of the screen under the action of inertia to increase the contact time between the raw materials and the screen, thereby improving the screening effect of the screen. At the same time, the screen can reciprocate up and down to prevent the raw materials from clogging the screen holes.

[0024] 3. The present invention provides a secondary screening component, which can screen the magnetic metal minerals in the raw material by magnetic separation to achieve the purpose of screening the raw material material, thereby improving the screening effect and working range of the device.

[0025] 4. The present invention adjusts the vibration amplitude of the screen by controlling the telescopic rod, the turntable and related components to clear the blockage on the screen; and after the vibration amplitude of the screen is increased, when the screen vibrates downward, the vibrating ball below it can be magnetically adsorbed on the material distribution cover, and as the material distribution cover moves until the magnetic force disappears, the vibrating ball separates from the material distribution cover, and the elastic rope drives the vibrating ball to vibrate up and down during the process of restoring the elastic deformation, and then can transmit the vibration to the screen, thereby improving the screening and blockage clearing effect of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention.

[0028] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention.

[0029] Figure 4 It is a schematic diagram of the structure of the device housing of the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of the material discharge cover of the present invention.

[0031] Figure 6 It is a schematic diagram of the structure of the secondary screening assembly of the present invention.

[0032] Figure 7 It is a schematic cross-sectional view of the structure of the secondary screening assembly of the present invention.

[0033] Figure 8 It is a schematic diagram of the electromagnet structure of the present invention.

[0034] Fig. 9 It is a schematic diagram of the support base structure of the present invention.

[0035] Fig.10 It is a schematic diagram of the structure of the feeding assembly of the present invention.

[0036] Fig.11 It is a schematic diagram of the structure of the primary screening component of the present invention.

[0037] Fig.12 It is a schematic cross-sectional view of the structure of the primary screening assembly of the present invention.

[0038] Fig.13 It is a schematic diagram of the movable cover structure of the present invention.

[0039] Fig.14 It is a schematic diagram of the structure of the elastic rope and the vibrating ball of the present invention.

[0040] In the figure: 1, device housing; 2, feeding assembly; 3, primary screening assembly; 4, secondary screening assembly; 101, housing; 102, mounting seat; 201, top plate; 202, feeding hopper; 203, fixing block; 301, fixing seat; 302, connecting seat; 303, material guide cover; 304, movable cover; 305, screen; 306, bellows; 307, connecting plate; 308, sliding sleeve; 309, sliding rod; 310, transmission plate; 311, convex block; 312, rotating disk; 313, pressing block; 314, rotating rod; 315, driving motor machine; 316, driving gear; 317, ring gear; 318, through slot; 319, discharge pipe; 320, sealing plate; 321, telescopic rod; 322, elastic rope; 323, vibration ball; 401, support seat; 402, transmission shaft; 403, material distribution cover; 404, electromagnet; 405, discharge cover; 406, extension plate; 407, discharge plate; 408, guide plate; 409, guide block; 410, contact; 411, conductive ring; 412, conductive column; 413, conductive plate; 414, material distribution motor; 415, discharge pipe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1

[0043] The present invention provides Figures 1 to 13 A metal mineral screening device shown includes a device housing 1, a feeding component 2, a primary screening component 3 and a secondary screening component 4, the feeding component 2, the primary screening component 3 and the secondary screening component 4 are arranged in sequence from top to bottom, and the feeding component 2, the primary screening component 3 and the secondary screening component 4 are all arranged inside the device housing 1.

[0044] The device housing 1 comprises an outer shell 101 . The outer shell 101 is configured as a cylindrical structure. A mounting seat 102 with an annular structure is fixedly disposed at the top of the outer shell 101 .

[0045] The feeding assembly 2 includes a top plate 201, which is arranged inside the mounting seat 102. A feeding hopper 202 with a funnel structure is penetrated in the middle of the top plate 201. A fixing block 203 with a conical structure is fixed inside the feeding hopper 202. The fixing block 203 can guide the raw materials to ensure that the raw materials can fall above the material guide cover 303.

[0046] The primary screening assembly 3 includes a fixed seat 301 of an annular structure, and the fixed seat 301 is fixedly arranged at the inner top of the outer shell 101, and a connecting seat 302 of an annular structure is arranged above the fixed seat 301, and the connecting seat 302 is movably arranged at the middle of the lower surface of the top plate 201 through a bearing; specifically, a material guide cover 303 is fixedly arranged at the middle of the lower surface of the connecting seat 302, and the material guide cover 303 is arranged as a funnel structure, and a movable cover 304 is arranged below the material guide cover 303, and the movable cover 304 is arranged to penetrate the interior of the fixed seat 301, and the movable cover 304 is arranged An inverted funnel structure is provided inside the movable cover 304 with a screen 305 of a funnel structure fixedly arranged, and the screen 305 can realize the screening of the mineral particle size; more specifically, a bellows 306 is fixedly arranged on the top of the movable cover 304, and a connecting plate 307 of an annular structure is fixedly arranged on the top of the bellows 306, and the connecting plate 307 is movably arranged on the bottom end of the material guide cover 303 through a bearing, so that the material guide cover 303 can be ensured to rotate freely under the external driving force, and then the incoming material can be evenly distributed to the screen 305, thereby improving the screening effect of the screen 305.

[0047] A plurality of sliding sleeves 308 are disposed around the top of the outer wall of the movable cover 304 . A sliding rod 309 is disposed through the interior of the sliding sleeve 308 . The sliding rod 309 is fixed to the upper surface of the fixing seat 301 , and a spring is disposed around the outer side of the sliding rod 309 . In addition, a transmission plate 310 of an annular structure is arranged around the top of the outer wall of the movable cover 304, a protrusion 311 is fixedly arranged on the upper surface of the transmission plate 310, a turntable 312 is arranged on one side of the transmission plate 310, and a plurality of pressing blocks 313 corresponding to the protrusion 311 are arranged around the lower surface of the turntable 312, and the pressing blocks 313 are arranged in a hemispherical structure. When the turntable 312 rotates, the plurality of pressing blocks 313 intermittently squeeze the protrusion 311, so that the protrusion 311 moves downward, the protrusion 311 drives the transmission plate 310 to move downward, and the transmission plate 310 drives the screen 305 to move downward, and when the pressing blocks 313 are misaligned with the protrusion 311, the screen 305 moves upward under the action of the spring, so that the screen 305 achieves the effect of up and down reciprocating motion, and performs screening work. Of course, in order to ensure the amplitude of the overall up and down motion of the screen 305, a turntable 312 and related components can be arranged on both sides of the screen 305.

[0048] Moreover, a rotating rod 314 is slidably connected to the middle part of the turntable 312, a driving motor 315 is fixedly provided at the bottom end of the rotating rod 314, and the driving motor 315 is fixedly provided on the lower surface of the fixed seat 301, a driving gear 316 is fixedly provided at the top of the rotating rod 314, a ring gear 317 is provided on one side of the driving gear 316, and the ring gear 317 is fixedly provided at the outer bottom end of the connecting seat 302, the driving motor 315 drives the driving gear 316 to rotate through the rotating rod 314, the driving gear 316 drives the ring gear 317 to rotate, the ring gear 317 drives the connecting seat 302 and the material guide cover 303 to rotate, and the material guide cover 303 drives the raw material to rotate, so that the raw material rotates and falls along the inner wall of the material guide cover 303 under the action of centrifugal force.

[0049] The bottom end of the screen 305 is penetrated with a through slot 318, the interior of the through slot 318 is penetrated with a discharge pipe 319, and one end of the discharge pipe 319 is penetrated and set on the outer wall of the outer shell 101, and the bottom end of the movable cover 304 is fixedly provided with a sealing plate 320, and the sealing plate 320 is set inside the outer shell 101. The setting of the sealing plate 320 can ensure that the raw materials smoothly enter the secondary screening assembly 4. The materials that do not meet the particle size are discharged from the discharge pipe 319 for secondary crushing and screening.

[0050] The secondary screening assembly 4 includes a support seat 401, and the support seat 401 is fixedly arranged at the inner bottom end of the outer shell 101; specifically, a transmission shaft 402 is arranged through the middle of the support seat 401, and a material distribution cover 403 is fixedly arranged on the top of the transmission shaft 402, and the material distribution cover 403 is arranged as a boss structure, and the material distribution cover 403 is movably arranged on the upper surface of the support seat 401 through a bearing, and a plurality of electromagnets 404 are arranged around the top of the inner wall of the material distribution cover 403, and the electromagnet 404 is arranged as a fan-shaped structure, and a plurality of lower material covers 405 are arranged around the outer side of the material distribution cover 403, and the lower material cover 405 is arranged through the bottom end of the outer wall of the outer shell 101.

[0051] More specifically, an extension plate 406 is fixedly provided at the top of the inner side of the material lowering cover 405, and the top of the extension plate 406 is set as a boss type to ensure that the material can slide onto the material distribution cover 403 in time after falling on it, thereby preventing the material from piling up on it. A material lowering plate 407 and a material guide plate 408 are fixedly provided on both sides of the lower surface of the extension plate 406, respectively. The lower surface of the material lowering plate 407 is in contact with the upper surface of the material distribution cover 403, and the material guide plate 408 is arranged above the material distribution cover 403. A material guide block 409 of a hemispherical structure is provided at one end of the extension plate 406, and the material guide block 409 is fixedly provided at the top of the material distribution cover 403. The material guide block 409 does not affect the rotation of the material distribution cover 403, and the setting of the material guide block 409 can ensure that the raw materials fall on the upper surface of the material distribution cover 403.

[0052] In addition, contacts 410 are fixedly provided at both ends of the electromagnet 404, and a conductive ring 411 and a conductive column 412 are fixedly provided on the upper surface of the support seat 401. The tops of the conductive rings 411 and the conductive columns 412 are surrounded by a plurality of arc-shaped conductive plates 413, and the conductive plates 413 are staggered with the lower material cover 405. The conductive rings 411 and the conductive columns 412 can be connected to the circuit. When the conductive plates 413 are in contact with the contacts 410, the circuit of the electromagnet 404 is turned on to generate magnetism, which can adsorb the magnetic metal minerals; in addition, a material distribution motor 414 is fixedly provided at the bottom end of the transmission shaft 402, and the material distribution motor 414 is fixedly provided at the bottom end of the outer shell 101. The material distribution motor 414 can drive the material distribution cover 403 to rotate to realize the transportation of the magnetic metal minerals. The rotation speed of the material distribution motor 414 is relatively slow, which can prevent the remaining minerals from being thrown into the lower material cover 405 under the action of centrifugal force, thereby ensuring the screening accuracy. At the same time, a plurality of discharge pipes 415 are arranged outside the material distribution motor 414 , and the discharge pipes 415 are arranged through the bottom end of the outer shell 101 , and the discharge pipes 415 can discharge the remaining minerals at the bottom end of the outer shell 101 .

[0053] The present invention also provides a screening process of a metal mineral screening device, comprising the following steps:

[0054] Step 1: crushing: use a crusher to crush the metal minerals to be screened, so as to facilitate the subsequent operation process. The metal mineral mixture to be screened can be crushed by a crusher, and the metal minerals and the mixture can be put into the feeding component 2 after crushing.

[0055] Step 2, feeding, the metal mineral mixture to be screened is fed into the device through the feeding component 2, and the metal mineral and the mixture enter the primary screening component 3 along the feeding component 2; the crushed metal mineral mixture is fed into the feeding hopper 202, and then slides downward along the surface of the fixed block 203, and the metal mineral mixture powder can fall on the rotating guide cover 303 to facilitate subsequent screening work.

[0056] Step three, primary screening, after the metal mineral mixture enters the primary screening component 3, the screen 305 in the primary screening component 3 screens the particle size of the mixture, the raw material mixture with larger particles is discharged from the device, and the mixture that meets the standard moves downward to the secondary screening component 4.

[0057] After the raw material enters the primary screening assembly 3, it falls into the inside of the guide cover 303 under the guidance of the fixed block 203. At this time, the driving motor 315 drives the driving gear 316 to rotate through the rotating rod 314, and the driving gear 316 drives the ring gear 317 to rotate. The ring gear 317 drives the connecting seat 302 and the guide cover 303 to rotate, and the guide cover 303 drives the raw material to rotate, so that the raw material rotates and falls along the inner wall of the guide cover 303 under the action of centrifugal force. When the raw material falls into the inside of the screen 305, the raw material is in the inertia of Under the action, it rotates and falls along the inner wall of the screen 305. At the same time, the driving motor 315 drives the turntable 312 to rotate through the rotating rod 314. The pressing block 313 on the lower surface of the turntable 312 squeezes the protrusion 311, so that the transmission plate 310 moves up and down, and the transmission plate 310 can drive the screen 305 to move up and down to prevent the raw materials from blocking the sieve holes of the screen 305. The raw materials with smaller particles can pass through the screen 305 and fall, while the raw materials with larger particles can be discharged from the device through the discharge pipe 319, so that the raw material particle size screening can be achieved.

[0058] Step 4, secondary screening: the secondary screening component 4 screens the magnetic metal minerals in the mixture by magnetic separation, and the screened metal minerals are discharged through the discharge cover 405 to achieve the purpose of screening the metal minerals.

[0059] Specifically, after being screened by the screen mesh 305, the raw material can fall on the surface of the distribution cover 403. At this time, the contacts 410 at both ends of the electromagnet 404 are in contact with the conductive ring 411 and the conductive plate 413 at the top of the conductive column 412 respectively. At this time, the electromagnet 404 is energized to generate magnetism, and the magnetic metal minerals in the raw material are adsorbed on the surface of the distribution cover 403, and the remaining minerals in the raw material fall along the surface of the distribution cover 403 to the inside of the outer shell 101. The distribution cover 403 can drive the magnetic metal minerals to rotate. When the magnetic metal minerals follow the distribution cover 403 to rotate to one side of the lower cover 405, the conductive plate 413 is separated from the contact 410, and the electromagnet 404 is powered off. At this time, the magnetic mineral raw material loses its magnetic adsorption effect, and slides along the surface of the distribution cover 403 into the lower cover 405 under the action of gravity, and then is discharged from the device, so that the screening of the magnetic metal minerals can be achieved.

[0060] Embodiment 2

[0061] In the actual production process, the screen 305 is often blocked due to the influence of material humidity and particle size. When the screen 305 is blocked, it will not only affect the screening effect, but also cause a large amount of material to be directly discharged from the through groove 318 and the discharge pipe 319, and further sorting cannot be performed, which affects the sorting effect. Therefore, the screen 305 needs to be cleaned in time during the production process, but the manual cleaning method after shutdown not only increases the workload of the staff, but also affects the normal production efficiency. In order to ensure that the screen 305 is cleaned during normal production and improve the cleaning effect of the screen 305, the device is further improved.

[0062] like Fig.14 As shown, the turntable 312 is slidably connected to the rotating rod 314, and a telescopic rod 321 is provided on the turntable 312, and the upper end of the telescopic rod 321 is connected to the driving gear 316. The telescopic rod 321 can be an electric telescopic rod or a hydraulic telescopic rod to achieve automatic control. In this way, the driving gear 316 controls the telescopic rod 321 to extend or shorten while driving the turntable 312 to rotate around the rotating rod 314 through the telescopic rod 321, and can drive the turntable 321 to move up and down along the rotating rod 314.

[0063] An elastic rope 322 is connected below the screen 305 , and a vibrating ball is provided at the lower end of the elastic rope 322 .

[0064] In the actual production process, when the material humidity is high or the particle size changes, causing the screen 305 to be seriously blocked and it is necessary to clean it without stopping the machine, the telescopic rod 321 is first controlled to extend, and the telescopic rod 321 drives the turntable 312 to rotate around the rotating rod 314, while pushing the turntable 312 to move downward, so that the turntable 312 is close to the transmission plate 310. During the rotation of the turntable 312, the pressing block 313 on the lower surface of the turntable 312 squeezes the protrusion 311, so that the transmission plate 310 moves up and down. Since the turntable 312 is closer to the transmission plate 310 at this time, the turntable 312 can squeeze the transmission plate 310 downward to a lower position when the pressing block 313 squeezes the protrusion 311, thereby increasing the amplitude of the up and down movement of the screen 305 driven by the transmission plate 310. After the up and down movement amplitude of the screen 305 is increased, it can not only further increase the screening effect, but also effectively clear the blockage of its own mesh. After the up and down movement amplitude of the screen 305 increases, when the screen 305 moves downward to the lowest position, the vibrating ball 323 at the lower end of the elastic rope 322 below it can be magnetically adsorbed on the material distribution cover 403 and move with the material distribution cover 403. The vibrating ball 323 moves with the material distribution cover 403 and stretches the elastic rope 322, causing it to deform. When the vibrating ball 323 rotates to one side of the discharging cover 405 following the discharging cover 403, the conductive plate 413 is separated from the contact 410, the electromagnet 404 is powered off and no longer magnetically attracts the vibrating ball 323, and the vibrating ball 323 is detached from the discharging cover 403. The elastic rope 322 drives the vibrating ball 323 to vibrate up and down during the process of restoring the elastic deformation, and then the vibration can be transmitted to the screen 305 (it should be noted that by selecting the elasticity of the material of the elastic rope 322, while ensuring that it can be deformed, the vibration can be transmitted to the screen 305 to the greatest extent; and by setting the position of the elastic rope 322, it can be prevented from affecting the discharge pipe 319), thereby enhancing the vibration effect of the screen 305 and improving the screening and blockage clearing effect of the screen 305. Of course, in order to further improve the vibration effect of the screen 305, the speed of rotation of the driving motor 315 can be controlled to control the period of the pressing block 313 on the lower surface of the turntable 312 squeezing the protrusion 311. When the pressing block 313 does not squeeze the protrusion 311, that is, when the screen 305 does not vibrate up and down, the vibrating ball 323 detaches from the material distribution cover 403 and drives the screen 305 to vibrate, thereby preventing the vibrations of the two from interfering with each other and reducing the vibration effect of driving the screen 305.

[0065] Through the above operation, on the one hand, the vibration amplitude of the screen 305 is adjusted by controlling the telescopic rod 321, the rotating disk 312 and related components to clear the blockage on the screen 305; at the same time, after the vibration amplitude of the screen 305 is increased, when the screen 305 vibrates downward, the vibration ball 323 below it can be magnetically adsorbed on the material distribution cover 403, and as the material distribution cover 403 moves until the magnetic force disappears, the vibration ball 323 is separated from the material distribution cover 403, and the elastic rope 322 drives the vibration ball 323 to vibrate up and down during the process of restoring elastic deformation, and then can pass the vibration to the screen 305, thereby improving the screening and clearing effect of the screen 305. The two vibrations work together to improve the self-cleaning effect of the screen 305 and ensure the screening effect.

[0066] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening device for metal minerals, It is characterized in that It comprises a device housing (1), a feeding assembly (2), a primary screening assembly (3) and a secondary screening assembly (4); The device housing (1) comprises an outer shell (101), the outer shell (101) is arranged as a cylindrical structure, and a mounting seat (102) with an annular structure is fixedly arranged at the top end of the outer shell (101); The primary screening assembly (3) comprises a fixed seat (301) of an annular structure, and the fixed seat (301) is fixedly arranged at the inner top end of the outer shell (101); a connecting seat (302) of an annular structure is arranged above the fixed seat (301), and the connecting seat (302) is movably arranged at the middle part of the lower surface of the top plate (201) through a bearing; a material guide cover (303) is fixedly arranged at the middle part of the lower surface of the connecting seat (302), and the material guide cover (303) is arranged in a funnel structure; a movable cover (304) is arranged below the material guide cover (303), and the movable cover (304) is arranged through the interior of the fixed seat (301), and the movable cover (304) is arranged in an inverted funnel structure; a screen (305) of the funnel structure is fixedly arranged inside the movable cover (304); an elastic rope (322) is connected below the screen (305), and a vibrating ball is arranged at the lower end of the elastic rope (322); A transmission plate (310) of an annular structure is disposed around the top end of the outer wall of the movable cover (304), a protrusion (311) is fixedly disposed on the upper surface of the transmission plate (310), a rotating disk (312) is disposed on one side of the transmission plate (310), a plurality of pressing blocks (313) corresponding to the protrusion (311) are disposed around the lower surface of the rotating disk (312), and the pressing blocks (313) are arranged in a hemispherical structure; The middle part of the rotating disk (312) is slidably connected with a rotating rod (314), the bottom end of the rotating rod (314) is fixedly provided with a driving motor (315), and the driving motor (315) is fixedly provided on the lower surface of the fixing seat (301), the top end of the rotating rod (314) is fixedly provided with a driving gear (316), one side of the driving gear (316) is provided with a ring gear (317), and the ring gear (317) is fixedly provided at the outer bottom end of the connecting seat (302); the rotating disk (312) is provided with a telescopic rod (321), and the upper end of the telescopic rod (321) is connected to the driving gear (316).

2. A metal mineral screening device according to claim 1, Features: The feeding component (2), the primary screening component (3) and the secondary screening component (4) are arranged in sequence from top to bottom, and the feeding component (2), the primary screening component (3) and the secondary screening component (4) are all arranged inside the device housing (1).

3. A metal mineral screening device according to claim 1, Features: The feeding assembly (2) comprises a top plate (201), wherein the top plate (201) is arranged inside the mounting seat (102), a feeding hopper (202) with a funnel structure is provided through the middle of the top plate (201), and a fixing block (203) with a conical structure is fixedly provided inside the feeding hopper (202).

4. A metal mineral screening device according to claim 3, Features: A bellows (306) is fixedly provided at the top of the movable cover (304), a connecting plate (307) of an annular structure is fixedly provided at the top of the bellows (306), and the connecting plate (307) is movably provided at the bottom end of the material guide cover (303) through a bearing, a plurality of sliding sleeves (308) are provided around the top of the outer wall of the movable cover (304), a sliding rod (309) is provided through the interior of the sliding sleeve (308), the sliding rod (309) is fixedly provided on the upper surface of the fixed seat (301), and a spring is provided around the outer side of the sliding rod (309).

5. A metal mineral screening device according to claim 4, Features: A through slot (318) is provided at the bottom end of the screen (305), a discharge pipe (319) is provided inside the through slot (318), and one end of the discharge pipe (319) is provided on the outer wall of the outer shell (101), and a sealing plate (320) is fixedly provided at the bottom end of the movable cover (304), and the sealing plate (320) is provided inside the outer shell (101).

6. A metal mineral screening device according to claim 5, Features: The secondary screening assembly (4) comprises a support seat (401), and the support seat (401) is fixedly arranged at the inner bottom end of the outer shell (101).

7. A metal mineral screening device according to claim 6, Features: A transmission shaft (402) is provided through the middle of the support seat (401), a material distribution cover (403) is fixedly provided on the top of the transmission shaft (402), the material distribution cover (403) is provided as a boss structure, and the material distribution cover (403) is movably provided on the upper surface of the support seat (401) through a bearing, a plurality of electromagnets (404) are provided around the top of the inner wall of the material distribution cover (403), and the electromagnets (404) are provided as a fan-shaped structure, a plurality of lower material covers (405) are provided around the outer side of the material distribution cover (403), and the lower material cover (405) is provided through the bottom end of the outer wall of the outer shell (101).

8. A metal mineral screening device according to claim 7, Features: An extension plate (406) is fixedly provided on the inner top end of the material discharging cover (405), and a material discharging plate (407) and a material guide plate (408) are fixedly provided on both sides of the lower surface of the extension plate (406), the lower surface of the material discharging plate (407) is in contact with the upper surface of the material distributing cover (403), and the material guide plate (408) is arranged above the material distributing cover (403), and a material guide block (409) with a hemispherical structure is provided at one end of the extension plate (406), and the material guide block (409) is fixedly provided on the top end of the material distributing cover (403).

9. A metal mineral screening device according to claim 8, Features: Contacts (410) are fixedly provided at both ends of the electromagnet (404); a conductive ring (411) and a conductive column (412) are fixedly provided on the upper surface of the support seat (401); a plurality of arc-shaped conductive plates (413) are arranged around the top of the conductive ring (411) and the conductive column (412); and the conductive plates (413) and the discharge cover (405) are arranged in an alternating manner; a material distribution motor (414) is fixedly provided at the bottom end of the transmission shaft (402); and the material distribution motor (414) is fixedly provided at the bottom end of the outer shell (101); and a plurality of discharge pipes (415) are provided on the outer side of the material distribution motor (414); and the discharge pipes (415) are arranged through the bottom end of the outer shell (101).

10. A screening process of a metal mineral screening device, wherein the screening process uses the screening device according to claim 9 to screen the material. It is characterized in that The steps include: Step 1: crushing: using a crusher to crush the metal minerals to be screened; Step 2: feeding, feeding the metal mineral mixture to be screened into the device through the feeding component (2), and the metal mineral and the mixture enter the primary screening component (3) along the feeding component (2); Step 3, primary screening, after the metal mineral mixture enters the primary screening component (3), the screen (305) in the primary screening component (3) screens the mixture according to the particle size, and the raw material mixture with larger particles is discharged from the device, and the mixture that meets the standard moves downward to the secondary screening component (4); Step 4: Secondary screening: The secondary screening component (4) screens the magnetic metal minerals in the mixture by magnetic separation, and the screened metal minerals are discharged and collected through the lower material cover (405).

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