Circulating screening device for antimony ore

Abstract

The invention relates to the technical field of antimony ore screening, and discloses a cyclic screening device for antimony ores, which comprises a screening cylinder, the screening cylinder is inclined and is low in left and high in right, a feeding hopper is welded to the top of the right end of the screening cylinder, three arc-shaped discharge ports are formed in the bottom of the screening cylinder in an array mode, and three partition plates are fixed in the screening cylinder in an array mode. An arc-shaped screen groove is formed in the bottom of the partition plate, a fan-shaped transferring opening is formed in the top of the partition plate, a feeding assembly is rotationally connected to the interior of the screening barrel and used for transferring antimony ore on the bottom wall of the screening barrel to the fan-shaped transferring opening, and a scraping assembly is slidably connected to the interior of the arc-shaped screen groove and used for scraping the antimony ore on the bottom wall of the screening barrel to the fan-shaped transferring opening. Spraying assemblies are arranged on the front side and the rear side of the screening barrel correspondingly. The antimony ore is screened through the arc-shaped screen groove, the depth of the arc-shaped screen groove can be increased by designing the thickness of the partition plate, after the right side of the partition plate rubs with the antimony ore, it can still be guaranteed that the width of the left half portion of the arc-shaped screen groove is kept stable, and the antimony ore can be stably screened.

Description

Technical Field

[0001] The invention relates to the technical field of antimony ore screening, in particular to a circulating screening device for antimony ore. Background Art

[0002] Antimony ore screening is an important part of antimony ore mining and processing. Its purpose is to classify the crushed ore according to the particle size so as to carry out more efficient mineral processing in the future. Commonly used screening equipment includes: vibrating screen, drum screen, disc screen, etc.

[0003] A Chinese patent with an application date of 2021-09-09 and a publication number of CN215695569U discloses an antimony ore circulating screening device for antimony ingot production, an antimony ore circulating screening device for antimony ingot production, comprising a device housing, the bottom end of the device housing is arranged in an open structure, and is fixedly connected to a screening plate support rod, the port of the screening plate support rod is fixedly connected to a center circular plate, a screening plate structure is arranged on the screening plate support rod, the screening plate structure comprises a powder screening plate, an antimony ore screening plate, a hollow structure and a solid plate, the solid plate is fixedly connected to the upper end of the screening plate support rod, the side end of the solid plate is fixedly connected to one side of the powder screening plate, the powder screening plate is fixedly connected to the upper end of the screening plate support rod, a plurality of groups of small through holes are provided on the powder screening plate, the fan blade plate is driven to rotate by a motor, so that the fan blade plate can drive the antimony ore, and the antimony ore is screened through the through holes of several groups of screening plates, and manual screening is not required.

[0004] In this technical solution, the fan blade pushes the antimony ore to move, so that the antimony ore passes through the through holes of the screening plate for screening. However, after long-term use, the antimony ore will wear the screening plate more, which may easily cause the holes of the screening plate to become larger or even damaged, affecting the screening effect; further improvements can be made. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the shortcomings of the prior art, the present invention provides a circulating screening device for antimony ore, which has the advantages of stable screening aperture and stable screening effect, and solves the problem that the friction between the antimony ore and the screening plate easily causes the holes of the screening plate to become larger or even damaged, thereby affecting the screening effect.

[0006] (II) Technical solution In order to achieve the above-mentioned purpose of stable screening aperture and stable screening effect, the present invention provides the following technical solutions: a circulating screening device for antimony ore, comprising a screening drum, the screening drum is inclined, lower on the left and higher on the right, a feed hopper is welded on the top of the right end of the screening drum, three arc-shaped discharge ports are arranged in an array at the bottom of the screening drum, and the widths of the three arc-shaped discharge ports gradually increase from right to left, three discharge hoppers are fixedly installed at the bottom of the screening drum, the discharge hoppers correspond to the arc-shaped discharge ports one by one, and the screening drum is connected with the discharge hopper through the arc-shaped discharge port; Three partitions are fixed in an array inside the screening drum, an arc-shaped screening groove is provided at the bottom of the partition, a fan-shaped transfer port is provided at the top of the partition, the partitions correspond to the arc-shaped discharge ports one by one, and the left side of the partition is flush with the right side wall of the arc-shaped discharge port, and the width of the arc-shaped screening groove is equal to the width of the arc-shaped discharge port; a feeding assembly is rotatably connected inside the screening drum, and the feeding assembly is used to transfer the antimony ore on the bottom wall of the screening drum to the fan-shaped transfer port, a scraping assembly is slidably connected inside the arc-shaped screening groove, and a spray assembly is arranged on the front and rear sides of the screening drum.

[0007] Preferably, an upper arc plate is fixedly installed on the left side of each partition, sealing plates are fixedly installed on the top of both ends of the upper arc plate, side arc plates are fixedly installed on the left side of the upper arc plate and the sealing plate, the side arc plates are welded to the inner wall of the screening drum, the sealing plate is located above the arc-shaped discharge port, and the right side of the side arc plate is flush with the left side wall of the arc-shaped discharge port.

[0008] Preferably, the feeding assembly includes a reducer fixedly mounted on the right end of the screening drum, a motor is connected to the right input end of the reducer, a rotating shaft is fixedly mounted on the left output end of the reducer, the rotating shaft is arranged along the axis of the screening drum, and the rotating shaft passes through and is rotatably connected to the centers of three partitions; three V-shaped hoppers are arranged in an array on the surface of the rotating shaft, the V-shaped hoppers correspond one-to-one to the partitions, the V-shaped hoppers are attached to the right side of the partition, and a plurality of stirring rods are fixedly mounted on the surface of the rotating shaft.

[0009] Preferably, the V-shaped hopper includes a long push plate and a short baffle, which are fixedly mounted on a rotating shaft, and are attached to the right side of the partition. The long push plate and the short baffle are distributed in an "eight" shape, and the length of the long push plate is greater than that of the short baffle. The spacing between the long push plate and the short baffle gradually increases from right to left. When the long push plate rotates to below the rotating shaft, the free end of the long push plate is flush with the top wall of the arc-shaped screen slot.

[0010] Preferably, a boss is fixedly installed between the long push plate and the short baffle, and the thickness of the boss gradually decreases from right to left.

[0011] Preferably, the scraper assembly includes three swivels, the three swivels correspond to the discharge hoppers one by one, and the swivels are attached to the right side of the discharge hopper, and a connecting rod is fixed through the tops of the three swivels; an arc-shaped rack is fixedly installed on the top of the middle swivel, and an arc-shaped bracket is fixedly installed on the top of the middle discharge hopper, the connecting rod is located between the outer wall of the screening drum and the inner wall of the arc-shaped bracket, a motor 2 is fixedly installed on the top of the arc-shaped bracket, a gear is fixedly installed on the output end of the motor 2, and the gear is meshed with the arc-shaped rack; a sliding column is fixedly installed on the left side of the bottom of each swivel, an arc-shaped slide groove is opened through the right side of the discharge hopper, the sliding column is slidably connected in the arc-shaped slide groove, a fixed plate is fixedly installed on the left end of the sliding column, a scraper is fixedly installed on the right side of the top of the fixed plate, and the scraper is slidably connected in the arc-shaped screen groove.

[0012] Preferably, the diameter of the slide column is equal to the width of the arc-shaped slide groove, and the width of the scraper is equal to the width of the arc-shaped screen groove; the central angle of the arc-shaped screen groove is 180°, and the central angle of the arc-shaped rack is less than 180°.

[0013] Preferably, the spray assembly comprises two water supply pipes, which are respectively located at the front and rear sides of the screening cylinder, the right ends of the water supply pipes are sealed, a connecting hose is connected between the left ends of the two water supply pipes, and a water inlet pipe is connected to the middle of the connecting hose; three installation windows are provided on the front and rear sides of the screening cylinder, the installation windows correspond one-to-one to the arc-shaped discharge ports, and the installation windows are located on the right side of the arc-shaped discharge ports; six guide pipes are fixedly installed on each of the water supply pipes, a hollow ball seat is fixedly installed on the other end of the guide pipe, a water spray hole is provided on the hollow ball seat along its diameter direction, and the water spray hole is connected to the guide pipe; six mounting plates are fixedly installed on the screening cylinder, the mounting plates correspond one-to-one to the mounting windows, the mounting plates seal the mounting windows, each of the mounting plates is provided with two spherical grooves, the spherical grooves pass through the mounting plates, and the hollow ball seat is arranged in the spherical grooves; an elastic support is provided between the guide pipe and the screening cylinder.

[0014] Preferably, the elastic support member includes two arc-shaped clamping plates fixedly mounted on both sides of the mounting plate, an arc-shaped slot is formed between the arc-shaped clamping plate and the outer wall of the screening drum, an arc-shaped slide is slidably connected in the arc-shaped slot, a cross plate is fixedly mounted between the top ends of the two arc-shaped slides, a support plate is fixedly mounted on the top of the cross plate, two arc-shaped sliding rods are fixedly mounted on the bottom of the support plate, the arc-shaped sliding rods pass through and are slidably connected to the arc-shaped clamping plates, a spring is sleeved on the outer side of the arc-shaped sliding rod, and the spring is fixedly mounted between the arc-shaped clamping plates and the support plates; a reinforcement plate is fixedly mounted between the two guide tubes, and a pull rod is hinged between the reinforcement plate and the support plate.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a circulating screening device for antimony ore, which has the following beneficial effects: 1. The antimony ore circulating screening device screens the antimony ore through the arc-shaped screen slot. The depth of the arc-shaped screen slot can be increased by designing the thickness of the partition. After the right side of the partition rubs against the antimony ore, the width of the left half of the arc-shaped screen slot can still be guaranteed to remain stable, so that the antimony ore can be screened stably. 2. The antimony ore circulating screening device drives the gear to rotate through the second motor, driving the arc-shaped rack and the middle rotating ring to rotate. Under the connection of the connecting rod, the three rotating rings rotate synchronously. Under the connection of the sliding column and the fixed plate, the scraper slides in the arc-shaped screen slot to push out the antimony ore stuck in the arc-shaped screen slot, ensuring the arc-shaped screen slot to screen the antimony ore stably; 3. The antimony ore circulation screening device is used to put the antimony ore to be screened from the feed hopper into the screening drum. The antimony ore moves from right to left under the action of gravity. The antimony ore with a particle size larger than the width of the arc-shaped screen slot is retained on the right side of the partition, and the antimony ore with a particle size smaller than the arc-shaped screen slot passes through the arc-shaped screen slot and the arc-shaped discharge port, and then is discharged from the discharge hopper; the motor 1 and the reducer cooperate to drive the rotating shaft to rotate, and the stirring rod stirs the antimony ore inside the screening drum to prevent the antimony ore from piling up and promote the antimony ore to move to the left; during the rotation of the rotating shaft, the V-shaped hopper sweeps on the right side of the partition, and the long push plate pushes the antimony ore with a particle size larger than the width of the arc-shaped screen slot upward. When the long push plate and the short baffle are located directly above the rotating shaft, the antimony ore between the long push plate and the short baffle passes through the fan-shaped transfer port, thereby crossing the partition and moving to the right side of the next partition for the next screening; thereby achieving the purpose of multi-stage screening; 4. The device for circulating screening of antimony ore delivers water into the water supply pipe through the water inlet pipe and the connecting hose, and then sprays water into the inside of the screening cylinder through the water spray holes on the guide pipe and the hollow ball seat. The water flow impacts the antimony ore at the bottom wall of the screening cylinder, promotes the movement of the antimony ore inside the screening cylinder, and plays a role in dust reduction. During the rotation of the swivel, the connecting rod moves on the outside of the screening cylinder, squeezes the supporting plate, and the arc-shaped sliding plate slides on the outer wall of the screening cylinder. The pull rod pushes the reinforcement plate downward, thereby driving the guide pipe and the hollow ball seat to deflect relative to the mounting plate, so that the inclination angles of the guide pipes on the front and rear sides are different, and the water flow sprayed from the water spray holes of the hollow ball seat produces a height difference, which promotes the antimony ore inside the screening cylinder to turn over; ensuring that the antimony ore stably moves to the arc-shaped screening slot for screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a circulating screening device for antimony ore proposed by the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a screening drum and a discharge hopper for an antimony ore circulating screening device proposed by the present invention; Figure 3This is a schematic diagram of a three-dimensional cutaway structure of a screening cylinder for an antimony ore circulating screening device proposed by the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of a partition used in an antimony ore circulating screening device proposed by the present invention; Figure 5 This is a schematic diagram of the right side structure of a partition used in an antimony ore circulating screening device proposed by the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of a partition and a feeding assembly for an antimony ore circulating screening device proposed by the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of a feeding assembly for an antimony ore circulating screening device proposed by the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of a screening cylinder and a scraping assembly for an antimony ore circulating screening device proposed by the present invention; Fig. 9 A schematic diagram of the structure of a three-dimensional cutaway view of a screening drum and a scraping assembly for an antimony ore circulating screening device proposed by the present invention; Fig.10 This is a schematic diagram of the three-dimensional structure of a scraping assembly for an antimony ore circulating screening device proposed by the present invention; Fig.11 This is a schematic diagram of the three-dimensional structure of the transfer ring of a scraping assembly for an antimony ore circulating screening device proposed by the present invention; Fig.12 This is a schematic diagram of the three-dimensional structure of a spray assembly for an antimony ore circulating screening device proposed by the present invention; Fig.13 This is a schematic diagram of the three-dimensional structure of an elastic support member in a spray assembly for an antimony ore circulating screening device proposed by the present invention; Fig.14 This is a schematic diagram of the three-dimensional explosion structure of an elastic support member in a spray assembly for an antimony ore circulating screening device proposed by the present invention.

[0017] In the figure: 100, screening cylinder; 200, arc-shaped discharge port; 300, discharge hopper; 400, partition; 500, arc-shaped screen slot; 600, fan-shaped transfer port; 700, feeding assembly; 800, scraping assembly; 900, spray assembly; 101, feed hopper; 102, installation window; 301, arc-shaped slide; 401, upper arc plate; 402, sealing plate; 403, side arc plate; 701, reducer; 702, motor 1; 703, rotating shaft; 704, V-shaped hopper; 705, stirring rod; 7041, long push plate; 7042, short baffle; 7043, 7044, 7045, 7046, 7047, 7048, 7049, 710, 711, 712, 713, 714, 715, 716, 717, 718, 719, 720, 721, 722, 723, 724, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736, 737, 738, 739, 740, 741, 742, 743, 744, 745, 746, 747, 748, 749, 750, 751, 752, 753, 754, 755, 756, 757, 758, 759, 760, 761, 762, 043, boss; 801, swivel; 802, connecting rod; 803, arc-shaped rack; 804, arc-shaped bracket; 805, motor 2; 806, gear; 807, slide column; 808, fixing plate; 809, scraper; 901, water supply pipe; 902, connecting hose; 903, water inlet pipe; 904, guide pipe; 905, hollow ball seat; 906, mounting plate; 907, reinforcement plate; 908, arc-shaped splint; 909, arc-shaped slide; 910, cross plate; 911, support plate; 912, arc-shaped slide rod; 913, spring; 914, pull rod. DETAILED DESCRIPTION

[0018] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0019] 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.

[0020] See also Figure 1-Figure 3, a circulating screening device for antimony ore, comprising a screening drum 100, the screening drum 100 is inclined, and the left side is lower than the right side. A feed hopper 101 is welded on the top of the right end of the screening drum 100, so that when the antimony ore is put into the screening drum 100 from the feed hopper 101, the antimony ore moves to the left along the inner wall of the screening drum 100 under the action of gravity. Three arc-shaped discharge ports 200 are arranged in an array at the bottom of the screening drum 100, and the widths of the three arc-shaped discharge ports 200 gradually increase from right to left, and are used to discharge antimony ore of different particle sizes. Three discharge hoppers 300 are fixedly installed at the bottom of the screening drum 100, and the discharge hoppers 300 correspond to the arc-shaped discharge ports 200 one by one. The screening drum 100 is connected to the discharge hopper 300 through the arc-shaped discharge ports 200. A storage hopper can be set below the discharge hopper 300 to store the discharged antimony ore.

[0021] Three partitions 400 are fixed in an array inside the screening cylinder 100. The bottom of the partition 400 is provided with an arc-shaped screening slot 500, and the top of the partition 400 is provided with a fan-shaped transfer port 600. The partition 400 corresponds to the arc-shaped discharge port 200 one by one, and the left side of the partition 400 is flush with the right side wall of the arc-shaped discharge port 200. The width of the arc-shaped screening slot 500 is equal to the width of the arc-shaped discharge port 200; thus, the antimony ore is blocked by the partition 400 and screened by the arc-shaped screening slot 500. Antimony ore with a particle size larger than the width of the arc-shaped screening slot 500 is retained on the right side of the partition 400, and antimony ore with a particle size smaller than the width of the arc-shaped screening slot 500 passes through the arc-shaped screening slot 500 and the arc-shaped discharge port 200, and is discharged through the discharge hopper 300.

[0022] The screen drum 100 is internally connected to a feeding assembly 700 for rotating. The feeding assembly 700 is used to transfer the antimony ore on the bottom wall of the screen drum 100 to the fan-shaped transfer port 600, so as to transfer the antimony ore trapped on the right side of the partition 400 to the left for the next level of screening. The arc-shaped screen slot 500 is internally connected to a scraper assembly 800 for sliding. The scraper assembly 800 intermittently slides in the arc-shaped screen slot 500 to push out the antimony ore stuck in the arc-shaped screen slot 500, so as to ensure that the arc-shaped screen slot 500 can stably screen the antimony ore. The front and rear sides of the screen drum 100 are provided with a spray assembly 900, through which water is sprayed into the screen drum 100, and under the action of the water flow, the antimony ore is further promoted to move to the left. The water sprayed by the spray assembly 900 is humidified to reduce the dust effect during the screening process.

[0023] See also Figure 3-Figure 5, an upper arc plate 401 is fixedly installed on the left side of each partition 400, a sealing plate 402 is fixedly installed on the top of both ends of the upper arc plate 401, a side arc plate 403 is fixedly installed on the left side of the upper arc plate 401 and the sealing plate 402, and the side arc plate 403 is welded to the inner wall of the screening cylinder 100, the sealing plate 402 is located above the arc-shaped discharge port 200, and the right side of the side arc plate 403 is flush with the left side wall of the arc-shaped discharge port 200. When the antimony ore passes through the arc-shaped sieve slot 500 and moves to the left, the antimony ore is blocked by the side arc plate 403, so as to ensure that the antimony ore can pass through the arc-shaped discharge port 200 and the discharge hopper 300 smoothly and be discharged. The arc-shaped discharge port 200 is shielded from above by the upper arc plate 401, and when the antimony ore passes through the fan-shaped transfer port 600, the antimony ore is prevented from falling directly into the arc-shaped discharge port 200.

[0024] See also Figure 6-Figure 7 The feeding assembly 700 includes a reducer 701 fixedly mounted on the right end of the screening drum 100, a motor 702 is connected to the right input end of the reducer 701, and a rotating shaft 703 is fixedly mounted on the left output end of the reducer 701. The rotating shaft 703 is arranged along the axis of the screening drum 100, and the rotating shaft 703 is connected to the center of the three partitions 400. Three V-shaped hoppers 704 are arranged in an array on the surface of the rotating shaft 703. The V-shaped hoppers 704 correspond to the partitions 400 one by one, and the V-shaped hoppers 704 are attached to the right side of the partition 400. A plurality of stirring rods 705 are fixedly mounted on the surface of the rotating shaft 703. When the rotating shaft 703 is driven to rotate by the reducer 701 and the motor 702, the stirring rod 705 moves inside the screening drum 100 to turn the antimony ore. The antimony ore trapped on the right side of the partition 400 is transferred to the fan-shaped transfer port 600 through the V-shaped hopper 704.

[0025] The V-shaped hopper 704 includes a long push plate 7041 and a short baffle 7042, which are fixedly mounted on the rotating shaft 703, and are attached to the right side of the partition 400. The long push plate 7041 and the short baffle 7042 are distributed in an "eight" shape, the length of the long push plate 7041 is greater than the length of the short baffle 7042, and the distance between the long push plate 7041 and the short baffle 7042 gradually increases from right to left; so that when the long push plate 7041 and the short baffle 7042 sweep the upper half of the partition 400, the antimony ore is gathered in the left half between the long push plate 7041 and the short baffle 7042. When the long push plate 7041 rotates to the bottom of the rotating shaft 703, the free end of the long push plate 7041 is flush with the top wall of the arc-shaped screen slot 500. Therefore, when the long push plate 7041 sweeps over the lower half of the partition 400 during the rotation of the shaft 703, the antimony ore with a particle size less than or equal to the width of the arc-shaped screen slot 500 is prevented from being pushed upward. When the long push plate 7041 pushes the antimony ore with a particle size greater than the width of the arc-shaped screen slot 500 upward, when the long push plate 7041 and the short baffle 7042 are in the upper half of the partition 400, the antimony ore is gathered between the long push plate 7041 and the short baffle 7042. The reducer 701 and the motor 1 702 can be set to start and stop intermittently. When the reducer 701 and the motor 1 702 are partially stopped, the long push plate 7041 and the short baffle 7042 are just flush with the two side walls of the fan-shaped transfer port 600, so that the antimony ore between the long push plate 7041 and the short baffle 7042 can stably pass through the fan-shaped transfer port 600 and transfer to the left. A boss 7043 is fixedly installed between the long push plate 7041 and the short baffle plate 7042 , and the thickness of the boss 7043 gradually decreases from right to left, further promoting the antimony ore between the long push plate 7041 and the short baffle plate 7042 to gather to the left.

[0026] See also Figure 8-Figure 10The scraping assembly 800 includes three rotating rings 801, and the three rotating rings 801 correspond to the discharge hopper 300 one by one, and the rotating rings 801 are attached to the right side of the discharge hopper 300. A connecting rod 802 is fixed between the tops of the three rotating rings 801, so that the three rotating rings 801 rotate synchronously. An arc-shaped rack 803 is fixedly installed on the top of the middle rotating ring 801, and an arc-shaped bracket 804 is fixedly installed on the top of the middle discharge hopper 300. The connecting rod 802 is located between the outer wall of the screening drum 100 and the inner wall of the arc-shaped bracket 804. A motor 2 805 is fixedly installed on the top of the arc-shaped bracket 804, and a gear 806 is fixedly installed on the output end of the motor 2 805. The gear 806 is meshed with the arc-shaped rack 803. The gear 806 is driven to rotate by the motor 2 805, which drives the arc-shaped rack 803 and the rotating ring 801 to rotate. The motor 2 805 is started and stopped intermittently, and the output end of the motor 2 805 rotates in opposite directions when the motor 2 805 is started twice adjacently, so that the rotating ring 801 rotates back and forth. The central angle of the arc-shaped sieve slot 500 is 180°, and the central angle of the arc-shaped rack 803 is less than 180°. Therefore, the rotation angle of the arc-shaped rack 803 and the rotating ring 801 is less than 180° each time.

[0027] A sliding column 807 is fixedly installed on the left side of the bottom of each rotating ring 801. An arc-shaped chute 301 is opened through the right side of the discharge hopper 300. The rotating ring 801 fits on the right side of the discharge hopper 300 to seal the arc-shaped chute 301. The sliding column 807 is slidably connected in the arc-shaped chute 301, and the diameter of the sliding column 807 is equal to the width of the arc-shaped chute 301. A fixed plate 808 is fixedly installed on the left end of the sliding column 807, and a scraper 809 is fixedly installed on the right side of the top of the fixed plate 808. The scraper 809 is slidably connected in the arc-shaped screen slot 500, and the width of the scraper 809 is equal to the width of the arc-shaped screen slot 500. Therefore, during the rotation of the arc-shaped rack 803 and the rotating ring 801, the scraper 809 slides inside the arc-shaped screen slot 500, pushing out the antimony ore stuck in the arc-shaped screen slot 500, and avoiding large-scale blockage of the arc-shaped screen slot 500. Furthermore, the rotation angle of the rotating ring 801 is less than 180°, so as to prevent the second motor 805 from colliding with the partition 400 .

[0028] See also Figure 11-13 The spray assembly 900 includes two water supply pipes 901, which are respectively located at the front and rear sides of the screening drum 100. The right ends of the water supply pipes 901 are sealed, and a connecting hose 902 is connected between the left ends of the two water supply pipes 901. The middle of the connecting hose 902 is connected to a water inlet pipe 903. The water inlet pipe 903 is connected to a water pump, and water is transported to the inside of the water supply pipe 901 through the water inlet pipe 903 and the connecting hose 902.

[0029] Three installation windows 102 are provided on the front and rear sides of the screening drum 100. The installation windows 102 correspond to the arc-shaped discharge port 200 one by one, and the installation windows 102 are located on the right side of the arc-shaped discharge port 200. Six guide pipes 904 are fixedly installed on each water supply pipe 901. A hollow ball seat 905 is fixedly installed on the other end of the guide pipe 904. A water spray hole is provided along the diameter direction of the hollow ball seat 905. The water spray hole is connected to the guide pipe 904. Six installation plates 906 are fixedly installed on the screening drum 100. The installation plates 906 correspond to the installation windows 102 one by one. The installation plates 906 seal the installation windows 102. Two spherical grooves are provided on each installation plate 906. The spherical grooves pass through the installation plate 906. The hollow ball seat 905 is set in the spherical grooves. An elastic support is provided between the guide pipe 904 and the screening drum 100. The guide tube 904 is supported by an elastic support member so that the guide tube 904 is tilted downward in an initial state, and water sprayed from the water spray holes impacts the antimony ore at the bottom wall of the screening drum 100 .

[0030] The elastic support member includes two arc-shaped clamping plates 908 fixedly mounted on both sides of the mounting plate 906, an arc-shaped slot is formed between the arc-shaped clamping plates 908 and the outer wall of the screening drum 100, an arc-shaped slide plate 909 is slidably connected in the arc-shaped slot, a cross plate 910 is fixedly mounted between the tops of the two arc-shaped slide plates 909, a support plate 911 is fixedly mounted on the top of the cross plate 910, and two arc-shaped slide bars 912 are fixedly mounted on the bottom of the support plate 911, the arc-shaped slide bar 912 penetrates and slides and is connected to the arc-shaped clamping plates 908, and a spring 913 is sleeved on the outer side of the arc-shaped slide bar 912, and the spring 913 is fixedly mounted between the arc-shaped clamping plates 908 and the support plate 911. The elasticity of the spring 913 makes the support plate 911 have a tendency to move upward. A reinforcement plate 907 is fixedly mounted between the two guide pipes 904, and a pull rod 914 is hinged between the reinforcement plate 907 and the support plate 911. Therefore, under the pulling action of the pull rod 914, the guide tube 904 and the reinforcement plate 907 are driven to deflect during the sliding process of the support plate 911, the cross plate 910 and the arc-shaped slide plate 909 along the arc-shaped slot.

[0031] During the rotation of the swivel 801 and the connecting rod 802, the supporting plate 911 can be pushed by the connecting rod 802, so that the arc-shaped slide 909 slides in the arc-shaped slot. And by the intermittent start and stop of the motor 2 805, the connecting rod 802 can maintain the squeezing effect on the supporting plate 911 for a certain period of time, change the inclination angle of the guide tube 904, and make the water flow sprayed from the water spray hole on the hollow ball seat 905 move upward. Moreover, one supporting plate 911 is squeezed, and the other supporting plate 911 is not squeezed, so that the water flow sprayed by the guide tubes 904 on the front and rear sides has different heights, which can promote the turning of the antimony ore inside the screening cylinder 100.

[0032] When in use, first, the antimony ore to be screened is put into the screening cylinder 100 from the feed hopper 101, and the antimony ore moves from right to left under the action of gravity. The antimony ore with a particle size larger than the width of the arc-shaped screen slot 500 is retained on the right side of the partition 400, and the antimony ore with a particle size smaller than the arc-shaped screen slot 500 passes through the arc-shaped screen slot 500 and the arc-shaped discharge port 200, and then is discharged from the discharge hopper 300; The motor 702 and the reducer 701 cooperate to drive the rotating shaft 703 to rotate, and the stirring rod 705 stirs the antimony ore inside the screening drum 100 to prevent the antimony ore from piling up and promote the antimony ore to move to the left; during the rotation of the rotating shaft 703, the V-shaped hopper 704 sweeps on the right side of the partition 400, and the long push plate 7041 pushes the antimony ore with a particle size greater than the width of the arc-shaped screening slot 500 upward. When the long push plate 7041 and the short baffle 7042 are located directly above the rotating shaft 703, the antimony ore between the long push plate 7041 and the short baffle 7042 passes through the fan-shaped transfer port 600, thereby crossing the partition 400 and moving to the right side of the next partition 400 for the next screening; The gear 806 is driven to rotate by the second motor 805, driving the arc-shaped rack 803 and the middle rotating ring 801 to rotate. Under the connection of the connecting rod 802, the three rotating rings 801 rotate synchronously. Under the connection of the sliding column 807 and the fixed plate 808, the scraper 809 slides in the arc-shaped screen slot 500, pushing out the antimony ore stuck in the arc-shaped screen slot 500, and ensuring the arc-shaped screen slot 500 to stably screen the antimony ore. Water is transported into the water supply pipe 901 through the water inlet pipe 903 and the connecting hose 902, and then water is sprayed into the inside of the screening drum 100 through the water spray holes on the guide pipe 904 and the hollow ball seat 905. The water flow impacts the antimony ore at the bottom wall of the screening drum 100, promoting the movement of the antimony ore inside the screening drum 100; During the rotation of the swivel 801, the connecting rod 802 moves on the outside of the screening drum 100, the connecting rod 802 squeezes the support plate 911, the arc-shaped slide 909 slides on the outer wall of the screening drum 100, and the pull rod 914 pushes the reinforcement plate 907 downward, thereby driving the guide tube 904 and the hollow ball seat 905 to deflect relative to the mounting plate 906, so that the guide tubes 904 on the front and rear sides have different inclination angles, and the water flow sprayed from the water spray hole of the hollow ball seat 905 produces a height difference, which promotes the turning of the antimony ore inside the screening drum 100.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating screening device for antimony ore, comprising a screening drum (100), characterized in that: The screening drum (100) is inclined and lower on the left and higher on the right. A feed hopper (101) is welded to the top of the right end of the screening drum (100). Three arc-shaped discharge ports (200) are arranged in an array at the bottom of the screening drum (100). The widths of the three arc-shaped discharge ports (200) gradually increase from right to left. Three discharge hoppers (300) are fixedly installed at the bottom of the screening drum (100). The discharge hoppers (300) correspond to the arc-shaped discharge ports (200) one by one. The screening drum (100) is connected to the discharge hopper (300) through the arc-shaped discharge ports (200). Three partitions (400) are fixed in an array inside the screening cylinder (100), an arc-shaped screening slot (500) is provided at the bottom of the partition (400), a fan-shaped transfer port (600) is provided at the top of the partition (400), the partitions (400) correspond to the arc-shaped discharge ports (200) one by one, and the left side of the partition (400) is flush with the right side wall of the arc-shaped discharge port (200), and the width of the arc-shaped screening slot (500) is equal to the width of the arc-shaped discharge port (200); A feeding assembly (700) is rotatably connected inside the screening drum (100), and the feeding assembly (700) is used to transfer antimony ore on the bottom wall of the screening drum (100) to the fan-shaped transfer port (600). A scraping assembly (800) is slidably connected inside the arc-shaped screening slot (500), and spray assemblies (900) are provided on the front and rear sides of the screening drum (100).

2. The circulating screening device for antimony ore according to claim 1 is characterized in that: An upper arc plate (401) is fixedly mounted on the left side of each partition plate (400), and sealing plates (402) are fixedly mounted on the tops of both ends of the upper arc plate (401). Side arc plates (403) are fixedly mounted on the left sides of the upper arc plate (401) and the sealing plate (402), and the side arc plates (403) are welded to the inner wall of the screening cylinder (100). The sealing plate (402) is located above the arc-shaped discharge port (200), and the right side of the side arc plate (403) is flush with the left side wall of the arc-shaped discharge port (200).

3. The circulating screening device for antimony ore according to claim 1 is characterized in that: The feeding assembly (700) comprises a reducer (701) fixedly mounted on the right end of the screening drum (100); a motor 1 (702) is connected to the right input end of the reducer (701); a rotating shaft (703) is fixedly mounted on the left output end of the reducer (701); the rotating shaft (703) is arranged along the axis of the screening drum (100); and the rotating shaft (703) penetrates and is rotatably connected to the center of the three partitions (400); The rotating shaft (703) is provided with three V-shaped hoppers (704) in an array on the surface thereof. The V-shaped hoppers (704) correspond to the partitions (400) one by one. The V-shaped hoppers (704) are attached to the right side of the partition (400). A plurality of stirring rods (705) are fixedly mounted on the surface of the rotating shaft (703).

4. The circulating screening device for antimony ore according to claim 3 is characterized in that: The V-shaped hopper (704) comprises a long push plate (7041) and a short baffle (7042), wherein the long push plate (7041) and the short baffle (7042) are fixedly mounted on the rotating shaft (703), the long push plate (7041) and the short baffle (7042) are attached to the right side of the partition (400), the long push plate (7041) and the short baffle (7042) are arranged in an "eight" shape, the length of the long push plate (7041) is greater than the length of the short baffle (7042), and the distance between the long push plate (7041) and the short baffle (7042) gradually increases from right to left; When the long push plate (7041) rotates to below the rotating shaft (703), the free end of the long push plate (7041) is flush with the top wall of the arc-shaped sieve slot (500).

5. The circulating screening device for antimony ore according to claim 4 is characterized in that: A boss (7043) is fixedly installed between the long push plate (7041) and the short baffle plate (7042), and the thickness of the boss (7043) gradually decreases from right to left.

6. The circulating screening device for antimony ore according to claim 1 is characterized in that: The scraping assembly (800) comprises three rotating rings (801), the three rotating rings (801) correspond to the discharge hopper (300) one by one, and the rotating rings (801) are attached to the right side of the discharge hopper (300), and a connecting rod (802) is fixedly passed through the tops of the three rotating rings (801); An arc-shaped rack (803) is fixedly mounted on the top of the middle rotating ring (801), an arc-shaped bracket (804) is fixedly mounted on the top of the middle discharge hopper (300), the connecting rod (802) is located between the outer wall of the screening cylinder (100) and the inner wall of the arc-shaped bracket (804), a second motor (805) is fixedly mounted on the top of the arc-shaped bracket (804), a gear (806) is fixedly mounted on the output end of the second motor (805), and the gear (806) is meshed with the arc-shaped rack (803); A sliding column (807) is fixedly installed on the left side of the bottom of each rotating ring (801), an arc-shaped slide groove (301) is opened through the right side of the discharge hopper (300), and the sliding column (807) is slidably connected in the arc-shaped slide groove (301). A fixed plate (808) is fixedly installed on the left end of the sliding column (807), and a scraper (809) is fixedly installed on the right side of the top end of the fixed plate (808), and the scraper (809) is slidably connected in the arc-shaped screen groove (500).

7. The circulating screening device for antimony ore according to claim 6 is characterized in that: The diameter of the sliding column (807) is equal to the width of the arc-shaped sliding groove (301), and the width of the scraper (809) is equal to the width of the arc-shaped screen groove (500); The central angle of the arc-shaped sieve slot (500) is 180°, and the central angle of the arc-shaped rack (803) is less than 180°.

8. The circulating screening device for antimony ore according to claim 1 is characterized in that: The spray assembly (900) comprises two water supply pipes (901), the two water supply pipes (901) are respectively located at the front and rear sides of the screening cylinder (100), the right ends of the water supply pipes (901) are sealed, a connecting hose (902) is connected between the left ends of the two water supply pipes (901), and the middle part of the connecting hose (902) is connected to a water inlet pipe (903); Three installation windows (102) are provided through the front and rear sides of the screening cylinder (100), the installation windows (102) correspond one to one with the arc-shaped discharge openings (200), and the installation windows (102) are located on the right side of the arc-shaped discharge opening (200); Six flow guide pipes (904) are fixedly mounted on each of the water supply pipes (901); a hollow ball seat (905) is fixedly mounted on the other end of the flow guide pipe (904); a water spray hole is formed through the hollow ball seat (905) along the diameter direction thereof; the water spray hole is in communication with the flow guide pipe (904); Six mounting plates (906) are fixedly mounted on the screening cylinder (100), the mounting plates (906) corresponding to the mounting windows (102) one by one, the mounting plates (906) sealing the mounting windows (102), each mounting plate (906) having two spherical grooves, the spherical grooves penetrating the mounting plate (906), the hollow ball seats (905) being arranged in the spherical grooves; An elastic support member is provided between the flow guide pipe (904) and the screening cylinder (100).

9. The circulating screening device for antimony ore according to claim 8, characterized in that: The elastic support member comprises two arc-shaped clamping plates (908) fixedly mounted on both sides of the mounting plate (906); an arc-shaped slot is formed between the arc-shaped clamping plates (908) and the outer wall of the screening drum (100); an arc-shaped sliding plate (909) is slidably connected in the arc-shaped slot; a cross plate (910) is fixedly mounted between the top ends of the two arc-shaped sliding plates (909); a supporting plate (911) is fixedly mounted on the top of the cross plate (910); two arc-shaped sliding rods (912) are fixedly mounted on the bottom of the supporting plate (911); the arc-shaped sliding rods (912) penetrate and are slidably connected to the arc-shaped clamping plates (908); a spring (913) is sleeved on the outer side of the arc-shaped sliding rods (912); and the spring (913) is fixedly mounted between the arc-shaped clamping plates (908) and the supporting plates (911); A reinforcement plate (907) is fixedly installed between the two flow guide pipes (904), and a pull rod (914) is hinged between the reinforcement plate (907) and the support plate (911).

Images