A flotation device and method of use thereof

Abstract

The application provides a flotation device and a use method thereof, and belongs to the technical field of flotation equipment. The flotation device comprises a flotation barrel with an open top; a feeding mechanism arranged on one side of the flotation barrel and used for inputting ore pulp into the flotation barrel; a first gantry arranged on the top of the flotation barrel; a rotating shaft rotatably connected to the bottom of the first gantry; an air passage arranged on the top of the rotating shaft; and a plurality of air outlets arranged on the circumferential surface of the rotating shaft. In the application, the screw rod is driven to rotate in opposite directions, the nut is driven to reciprocate up and down, the nut is driven to move up and down on the inner wall of the hollow pipe, air is compressed into the ore pulp through the surface of the nut and the air compression rod when the ore pulp is in the flotation barrel, air bubbles are better formed, and minerals can be adhered to the bubbles to float, so that the flotation effect is better and the small green car is higher.

Description

Technical Field

[0001] This invention belongs to the field of flotation equipment technology, specifically relating to a flotation device and its usage method. Background Technology

[0002] Flotation involves using surfactants—foaming agents—that generate a large number of bubbles. When air is introduced into water or when agitation causes air to enter the water, the hydrophobic end of the surfactant oriented towards the air bubble at the gas-liquid interface, while the hydrophilic end remains in the solution, forming a bubble. Another surfactant (usually cationic surfactants, but also including aliphatic amines) acts as a collector, adsorbing onto the surface of the solid mineral powder. This adsorption is selective depending on the mineral properties. The basic principle is to utilize lattice defects on the crystal surface, allowing the outward-facing hydrophobic end to partially insert into the bubble. In this way, during the flotation process, the bubble may carry away the desired mineral powder, achieving the purpose of mineral beneficiation.

[0003] However, in existing flotation devices, air is typically introduced into the mixture by rotating an impeller when adding slurry and reagents. But in this way, after the slurry submerges the impeller, the lack of air pressure prevents the impeller from effectively carrying air to the bottom of the slurry. This prevents the air from dissolving into the slurry and forming bubbles, thus hindering the formation of mineralized foam and significantly reducing the flotation effect. Summary of the Invention

[0004] The purpose of this invention is to provide a flotation device and its method of use, aiming to solve the problem that in the existing flotation device, when adding slurry and reagents, air is introduced into the mixture by rotating an impeller. However, in this way, after the slurry submerges the impeller, the air lacks pressure, and the rotating impeller cannot effectively bring air to the bottom of the slurry. As a result, the air cannot dissolve into the slurry to form bubbles, which leads to the minerals not forming mineralized foam and greatly reduces the flotation effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A flotation apparatus, comprising:

[0007] A flotation tank with an open top;

[0008] A feeding mechanism, located on one side of the flotation tank, is used to feed slurry into the flotation tank;

[0009] The first gantry frame is located on top of the flotation tank;

[0010] The pivot is rotatably connected to the bottom of the first gantry frame;

[0011] A ventilation channel is provided at the top of the rotating shaft;

[0012] Multiple air outlets are provided, all located on the circumferential surface of the rotating shaft; and

[0013] The stirring assembly is provided in multiple sets, all of which are fixed on the circumferential surface of the rotating shaft;

[0014] Also includes:

[0015] A hollow tube is fixed to the bottom of the first gantry frame, and the top of the hollow tube extends through the top of the first gantry frame;

[0016] The screw is rotatably connected inside the hollow tube;

[0017] The nut is threaded onto the circumferential surface of the screw and fits against the inner wall of the hollow tube;

[0018] Two air pressure holes are provided, symmetrically located on both sides of the top of the nut;

[0019] A hollow base is fixed to the inner wall of the hollow tube;

[0020] Two air compressor rods are provided, both of which are fixed to the top of the hollow base and movably inserted into the two air compressor holes;

[0021] A drive mechanism is connected to the shaft and the screw to enable both to rotate.

[0022] As a preferred embodiment of the present invention, a one-way valve is fixed to the inner circumferential wall of the hollow tube, and the one-way valve is located on the lower side of the hollow seat.

[0023] As a preferred embodiment of the present invention, the driving mechanism includes:

[0024] The second gantry frame is fixed to the top of the first gantry frame.

[0025] The motor is fixed to the bottom of the second gantry frame, and the output end of the motor moves through the bottom of the first gantry frame and extends downward.

[0026] The first gear is fixed to the circumferential surface of the extended portion of the motor output end;

[0027] The second gear is fixed to the circumferential surface of the rotating shaft and meshes with the first gear;

[0028] The first half gear is fixed to the circumferential surface of the output end of the motor and located on the upper side of the first gantry frame;

[0029] The second half gear is fixed to the circumferential surface of the screw;

[0030] A ring rack is disposed on the upper side of the first gantry and meshes with both the first half gear and the second half gear;

[0031] Two sliding rods are provided, which are respectively fixed on both sides of the annular rack, and the ends of the two sliding rods that are far apart respectively pass through the two sides of the second gantry and extend outward.

[0032] In a preferred embodiment of the present invention, a cross-shaped support ring and a straight support ring are fixed to the inner circumferential wall of the hollow tube. The bottom of the screw is rotatably connected to the top of the straight support ring. The cross-shaped support ring is sleeved on the circumferential surface of the screw. Two limiting rods are fixed between the adjacent ends of the cross-shaped support ring and the straight support ring. Two limiting holes are opened on the top of the nut. The nut is slidably connected to the circumferential surface of the two limiting rods through the two limiting holes.

[0033] As a preferred embodiment of the present invention, a feeding tray is fixed on the circumferential surface of the flotation tank, the first gantry frame is fixed on the top of the feeding tray, a scraper is fixed on the circumferential surface of the rotating shaft, a discharge plate is fixed at one end of the scraper, the discharge plate matches the feeding tray, and a discharge port is opened in the feeding tray.

[0034] As a preferred embodiment of the present invention, a guide rod is fixed to the top of each of the two air compressor rods.

[0035] As a preferred embodiment of the present invention, a protective cover is fitted on the circumferential surface of the rotating shaft inside the flotation tank, an impeller is fixed on the circumferential surface of the flotation tank, the protective cover covers multiple air outlets inside, and the impeller is located below the air outlet.

[0036] As a preferred embodiment of the present invention, the feeding mechanism includes:

[0037] A support ring is fixed to the circumferential surface of the flotation tank;

[0038] The feed hopper is fixed inside the support ring; and

[0039] The feed pipe has one end fixed to the bottom of the feed tank and connected to the feed tank, and the other end of the feed pipe passes through the flotation tank and the protective cover and extends into the interior of the protective cover.

[0040] As a preferred embodiment of the present invention, two second reinforcing plates are fixed to the circumferential surface of the protective cover, and both ends of the two second reinforcing plates are fixed to the inner wall of the flotation tank. A first reinforcing plate is rotatably connected to the bottom of the rotating shaft, and both ends of the first reinforcing plate are fixed to the inner wall of the flotation tank. A first feed pipe is provided at the bottom of the flotation tank, and a valve is fixedly provided on the first feed pipe.

[0041] A method of using a flotation device includes the following steps:

[0042] S1. First, start the motor so that the output end of the motor drives the first half gear and the first gear to rotate. The first half gear drives the ring rack to reciprocate. The ring rack drives the second half gear to rotate and reciprocate. The second half gear drives the screw to rotate in both directions, so that the nut on the screw moves up and down, and performs piston-like push to push the air in, so that the air can be better input from the hollow tube into the flotation tank. At the same time, the first gear drives the meshing second gear to rotate, thereby driving the shaft to rotate. The shaft drives the impeller to rotate.

[0043] S2. Then the slurry is added from the feed tank and fed into the flotation tank through the feed pipe, located above the impeller. The rotation of the impeller generates centrifugal force, at which point the slurry is thrown to all sides. At the same time, air enters the flotation tank and reagents are added into the flotation tank.

[0044] S3. When the slurry is added and submerges the protective cover, the impeller drives multiple stirring components to mix the slurry and reagents in the flotation tank, forming foam. At this time, the mixture enters the rotating shaft. Through the up-and-down piston movement of the nut, when the nut is downward, it embeds into the surface of the two air compressor rods, allowing the air in the hollow tube to be compressed and enter the slurry from the air outlet. This causes the target minerals to adhere to the bubbles, forming a mineralized foam layer, and allows lighter minerals to adhere to the foam. When the nut is upward, it creates a negative pressure downward. At this time, the one-way valve prevents the slurry from flowing back, causing the nut to disengage from the air compressor rods, allowing air to re-enter the hollow tube. When the nut is compressed again, air can better enter the slurry, forming foam. When the foam carrying minerals floats to the scraper, the rotating shaft drives the scraper to rotate, scraping the foam down into the feeding tray. The discharge plate then carries the foam to the discharge port for collection.

[0045] Compared with the prior art, the beneficial effects of the present invention are:

[0046] 1. In this invention, the screw can rotate in both directions by the drive mechanism, and the nut can move up and down. This causes the nut to move up and down against the inner wall of the hollow tube. Through the surface of the nut and the air compressor, the air is pushed by a piston, so that when the slurry is in the flotation tank, the air can be compressed into the slurry, which can better form bubbles. This allows the minerals to stick to the foam and float, resulting in better flotation effect and a higher flotation car.

[0047] 2. In this invention, the drive mechanism can simultaneously drive the screw and the rotating shaft to rotate, so that the rotating shaft can drive the scraper and the stirring assembly to rotate. This not only allows for air intake but also provides power for stirring and foam scraping, greatly saving resource consumption and having broad application prospects.

[0048] 3. In this invention, the impeller enables the slurry to generate centrifugal force when it enters the flotation tank, squeezing the slurry and air into the flotation tank, so that the slurry can be better mixed with the air in the early stage. Attached Figure Description

[0049] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0050] Figure 1 This is a first-view perspective perspective view of the present invention;

[0051] Figure 2 This is a first sectional perspective view of the present invention;

[0052] Figure 3 This is a second sectional perspective view of the present invention;

[0053] Figure 4 This is a partial perspective view of the drive mechanism in this invention;

[0054] Figure 5 This is a partial perspective view of the screw in this invention;

[0055] Figure 6 This is a partial exploded view of the screw in this invention;

[0056] Figure 7 This is a partial perspective view of the stirring assembly in this invention;

[0057] Figure 8 This is a partial perspective view of the feeding tray in this invention;

[0058] Figure 9 This is a second-view perspective perspective view of the present invention.

[0059] In the diagram: 1. Flotation tank; 101. First feed pipe; 102. Valve; 2. Feeding tray; 201. Discharge port; 202. Second feed pipe; 3. Feed tank; 301. Support ring; 302. Feed pipe; 4. First gantry frame; 401. Second gantry frame; 5. Motor; 501. First half gear; 502. Second half gear; 503. First gear; 504. Second gear; 505. Sliding rod; 506. Ring rack; 6. Screw; 601. Nut 602. Cross-shaped support ring frame; 603. Air compressor rod; 6031. Guide rod; 604. Air compressor hole; 605. Limiting rod; 606. Limiting hole; 607. Straight support ring frame; 7. Rotating shaft; 701. Mixing assembly; 702. Ventilation channel; 703. Air outlet; 704. First reinforcing plate; 8. Hollow seat; 9. Protective cover; 901. Second reinforcing plate; 10. One-way valve; 11. Impeller; 12. Scraper; 121. Discharge plate; 13. Hollow tube. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] Example 1

[0062] Please see Figures 1-9 The present invention provides the following technical solutions:

[0063] A flotation apparatus, comprising:

[0064] Flotation tank 1 with an open top;

[0065] The feeding mechanism is located on one side of the flotation tank 1 and is used to feed the slurry into the flotation tank 1;

[0066] The first gantry 4 is located on top of the flotation tank 1;

[0067] The rotating shaft 7 is rotatably connected to the bottom of the first gantry frame 4;

[0068] Ventilation channel 702 is located at the top of rotating shaft 7;

[0069] Multiple air outlets 703 are provided, all located on the circumferential surface of the rotating shaft 7; and

[0070] The stirring assembly 701 is provided in multiple sets, all of which are fixed on the circumferential surface of the rotating shaft 7;

[0071] Also includes:

[0072] Hollow tube 13 is fixed to the bottom of the first gantry frame 4, and the top of hollow tube 13 penetrates the top of the first gantry frame 4;

[0073] Screw 6 is rotatably connected inside hollow tube 13;

[0074] Nut 601 is threaded onto the circumferential surface of screw 6 and fits against the inner wall of hollow tube 13;

[0075] Two air compression holes 604 are provided, symmetrically opened on both sides of the top of the nut 601;

[0076] Hollow seat 8 is fixed to the inner wall of hollow tube 13;

[0077] There are two air compressor rods 603, both of which are fixed to the top of the hollow base 8 and movably inserted into the two air compressor holes 604;

[0078] The drive mechanism is connected to the rotating shaft 7 and the screw 6 to enable both to rotate.

[0079] In a specific embodiment of the present invention, when this device is in use, the top of the flotation tank 1 is open, and the reagent can be added from the top of the flotation tank 1 or added together with the reagent from the feeding mechanism. The bottom is funnel-shaped for easy feeding. The feeding mechanism is used to feed the slurry into the flotation tank 1. The rotating shaft 7 is driven to rotate by the drive mechanism, which drives the stirring assembly 701 to rotate, thereby stirring the slurry, reagent and air in the flotation tank 1. There are four sets of stirring assemblies 701, each set has three stirring blades, and three sets of stirring assemblies 701 are located at the air outlet 7. On the upper side of 03, one set of stirring components 701 is located below the air outlet 703, which can better stir the mixture in the flotation tank 1. At the same time, the drive mechanism can drive the screw 6 to reciprocate in both forward and reverse directions, causing the screw 6 to rotate back and forth. This causes the screw 6 to move the nut 601. Under the limiting action of the limiting hole 606 and the limiting rod 605, the nut 601 moves linearly. The inner surface of the nut 601 is threaded with the screw 6, and the outer surface is in contact with the inner surface of the hollow tube 13. The outer surface of the nut 601... The surface is made of rubber, which allows it to better fit the inner wall of the hollow tube 13. When the nut 601 moves downward, it embeds into the surface of the air compressor 603 through the air compression hole 604, blocking the air compressor 603. This allows the air below the nut 601 to be compressed to the lower side of the hollow tube 13 as the nut 601 moves downward. The air flows from the top of the hollow tube 13 through the air compression hole 604 to the bottom of the nut 601, and then downward through the hollow seat 8. When the air compressor 603 and the air compression hole 604 are matched, the channel is closed. The pressure is applied downwards, and the air eventually enters the slurry, allowing it to better mix with the slurry. After the slurry is added to the flotation tank 1, the centrifugal force generated by the rotation of the impeller 11 draws in air. When the slurry is added and the impeller 11 is submerged, the centrifugal force generated by the impeller 11 can no longer effectively draw in air. At this time, the reciprocating piston-type air intake of the nut 601 allows the air to enter the flotation tank 1 better and mix with the slurry, so that the minerals to be floated adhere to the bubbles to form a mineralized foam layer, which can better float to the surface and be collected, resulting in a better flotation effect.

[0080] Specifically, as a preferred embodiment of the present invention, a one-way valve 10 is fixed on the inner circumference of the hollow tube 13, and the one-way valve 10 is located on the lower side of the hollow seat 8.

[0081] In this embodiment, a one-way valve 10 is provided inside the hollow tube 13 and below the hollow seat 8, so that the slurry will not enter the hollow seat 8 from the hollow tube 13, but the gas can flow into the flotation tank 1, so that the pushed-in air is more aerated and will not be occupied by the slurry.

[0082] Specifically, the drive mechanism includes:

[0083] The second gantry frame 401 is fixed to the top of the first gantry frame 4.

[0084] Motor 5 is fixed to the bottom of the second gantry 401, and the output end of motor 5 moves through the bottom of the first gantry 4 and extends downward.

[0085] The first gear 503 is fixed to the circumferential surface of the extension portion of the output end of the motor 5;

[0086] The second gear 504 is fixed to the circumferential surface of the rotating shaft 7 and meshes with the first gear 503;

[0087] The first half gear 501 is fixed to the circumferential surface of the output end of the motor 5 and located on the upper side of the first gantry 4;

[0088] The second half gear 502 is fixed to the circumferential surface of the screw 6;

[0089] The ring rack 506 is disposed on the upper side of the first gantry frame 4 and meshes with both the first half gear 501 and the second half gear 502;

[0090] There are two sliding rods 505, which are fixed on both sides of the annular rack 506 respectively, and the ends of the two sliding rods 505 that are far apart respectively pass through the two sides of the second gantry frame 401 and extend outward.

[0091] In this embodiment: the drive mechanism can simultaneously drive the screw 6 and the rotating shaft 7 to rotate, so that the rotating shaft 7 can drive the scraper 12 and the stirring assembly 701 to rotate. This not only allows for air intake but also provides power for stirring and foam scraping, greatly saving resource consumption and having broad application prospects. When the drive mechanism is running, the motor 5 serves as the power source. The motor 5 is electrically connected to an external power supply. When the motor 5 starts, its output end drives the first half gear 501 and the first gear 503 to rotate. The first half gear 501 meshes with the tooth gap on the inner side of the ring rack 506, causing the ring rack 506 to reciprocate. The first half gear 501, the ring rack 506, and the second half gear 502 all interact with the first gantry. A gap is left at the top of the frame 4 to allow air to enter the hollow tube 13 better. The second half gear 502 is always engaged with one side of the gear teeth in the ring rack 506. This causes the ring rack 506 to reciprocate, driving the second half gear 502 to reciprocate, causing the screw 6 to rotate back and forth. This causes the nut 601 to move up and down like a piston, pushing air. When the ring rack 506 moves, the sliding rods 505 at both ends slide. The second gantry frame 401 has an opening that matches the sliding rod 505. The sliding rod 505 slides inside. The sliding rod 505 is rectangular, which can better restrict the linear movement of the ring rack 506 and better engage with the first half gear 501, preventing tooth stripping.

[0092] Specifically, a cross support ring 602 and a straight support ring 607 are fixed on the inner circumference of the hollow tube 13. The bottom of the screw 6 is rotatably connected to the top of the straight support ring 607. The cross support ring 602 is sleeved on the circumferential surface of the screw 6. Two limiting rods 605 are fixed between the close ends of the cross support ring 602 and the straight support ring 607. Two limiting holes 606 are opened on the top of the nut 601. The nut 601 is slidably connected to the circumferential surface of the two limiting rods 605 through the two limiting holes 606.

[0093] In this embodiment: the straight support ring 607 can support the bottom of the screw 6, making it more stable when rotating; the cross support ring 602 is rotatably connected to the screw 6, further stabilizing the screw 6; and the limiting rod 605 is used to limit the nut 601, so that the nut 601 moves in a straight line.

[0094] Specifically, a feeding plate 2 is fixed on the circumferential surface of the flotation tank 1, the first gantry frame 4 is fixed on the top of the feeding plate 2, a scraper 12 is fixed on the circumferential surface of the rotating shaft 7, a discharge plate 121 is fixed at one end of the scraper 12, the discharge plate 121 matches the feeding plate 2, and a discharge port 201 is opened in the feeding plate 2.

[0095] In this embodiment: the feeding tray 2 is ring-shaped, and the inner wall of the feeding tray 2 is inclined on the inner side, so that the foam scraped off by the scraper 12 can flow into the arc-shaped inner wall of the feeding tray 2. The scraper 12 is driven to rotate by the rotating shaft 7, which can scrape the floating foam into the feeding tray 2. At the same time, the scraper 12 can drive the discharge plate 121 to make a circular motion in the feeding tray 2. At this time, the discharge plate 121 scrapes the foam in the feeding tray 2 into the discharge port 201. A second discharge pipe 202 is fixed at the discharge port 201, so that the foam carrying minerals can flow down along the second discharge pipe 202 for easy collection.

[0096] Specifically, guide rods 6031 are fixed to the top of both air compressor rods 603.

[0097] In this embodiment: when the nut 601 is in the initial position, the guide rod 6031 is located inside the air compression hole 604, so that the nut 601 can be better embedded in the surface of the two air compression rods 603, and can better push the air downward.

[0098] Specifically, a protective cover 9 is fitted on the circumferential surface of the rotating shaft 7 inside the flotation tank 1, and an impeller 11 is fixed on the circumferential surface of the flotation tank 1. The protective cover 9 covers multiple air outlets 703 inside, and the impeller 11 is located below the air outlets 703.

[0099] In this embodiment: the protective cover 9 allows the initial slurry to enter the impeller 11 more effectively. The rotation of the impeller 11 generates centrifugal force, causing the slurry to enter the gaps of the impeller 11 and allowing air to combine with the slurry.

[0100] Specifically, the feeding mechanism includes:

[0101] The support ring 301 is fixed to the circumferential surface of the flotation tank 1;

[0102] The feed hopper 3 is fixed inside the support ring 301; and

[0103] The feed pipe 302 has one end fixed to the bottom of the feed tank 3 and connected to the feed tank 3, and the other end of the feed pipe 302 passes through the flotation tank 1 and the protective cover 9 and extends into the interior of the protective cover 9.

[0104] In this embodiment: the feed tank 3 is used to carry the slurry. The height of the feed tank 3 is generally higher than the height of the added slurry in the flotation tank 1, so that the slurry can completely enter the flotation tank 1. The support ring 301 is used to support the feed tank 3. The feed pipe 302 is used to transport the slurry in the feed tank 3 to the flotation tank 1. Preferably, a control valve can be installed on the support ring 301 to prevent the slurry from flowing back.

[0105] Specifically, two second reinforcing plates 901 are fixed to the circumferential surface of the protective cover 9. Both ends of the two second reinforcing plates 901 are fixed to the inner wall of the flotation tank 1. The bottom of the rotating shaft 7 is rotatably connected to a first reinforcing plate 704. Both ends of the first reinforcing plate 704 are fixed to the inner wall of the flotation tank 1. A first feed pipe 101 is provided at the bottom of the flotation tank 1. A valve 102 is fixedly installed on the first feed pipe 101.

[0106] In this embodiment: the second reinforcing plate 901 is used to better support the protective cover 9. The protective cover 9 is rotatably connected to the rotating shaft 7. When the rotating shaft 7 rotates, the protective cover 9 remains stationary. The first reinforcing plate 704 is used to further support the rotating shaft 7, making the rotating shaft 7 more stable when rotating. The first feeding pipe 101 is used for feeding. The opening and closing of the first feeding pipe 101 can be conveniently controlled by the valve 102.

[0107] Example 2

[0108] This embodiment 2 provides a method for using a flotation device, which is used to further explain the working process or principle of the flotation device provided in embodiment 1 above, as follows:

[0109] A method of using a flotation device includes the following steps:

[0110] S1. First, start the motor 5, so that the output end of the motor 5 drives the first half gear 501 and the first gear 503 to rotate. The first half gear 501 drives the ring rack 506 to reciprocate. The ring rack 506 drives the second half gear 502 to rotate and reciprocate. The second half gear 502 drives the screw 6 to rotate in both directions, so that the nut 601 on the screw 6 moves up and down, and performs piston-like push to introduce air, so that air can be better introduced from the hollow tube 13 into the flotation tank 1. At the same time, the first gear 503 drives the meshing second gear 504 to rotate, thereby driving the rotating shaft 7 to rotate. The rotating shaft 7 drives the impeller 11 to rotate.

[0111] S2. Then the slurry is added from the feed tank 3 and fed into the flotation tank 1 through the feed pipe 302 and located on the upper side of the impeller 11. The rotation of the impeller 11 generates centrifugal force, at which time the slurry is thrown to all sides, while air enters the flotation tank 1 and reagents are added into the flotation tank 1.

[0112] S3. When the slurry is added and submerges the protective cover 9, the impeller 11 drives multiple stirring components 701 to stir, ensuring that the slurry and reagents in the flotation tank 1 are fully mixed to form foam. At this time, the mixed liquid enters the rotating shaft 7. Through the up-and-down piston movement of the nut 601, when the nut 601 moves downward, it embeds into the surface of the two air compressor rods 603, allowing the air in the hollow tube 13 to be forced downward and enter the slurry from the air outlet 703. This causes the minerals to be floated to adhere to the bubbles, forming a mineralized foam layer, allowing lighter minerals to adhere to the bubbles. When the nut 601 moves upward above the foam, a negative pressure is formed downward. At this time, the one-way valve 10 can prevent the slurry from flowing back, allowing the nut 601 to disengage from the air compressor 603, so that air can re-enter the hollow tube 13. When the nut 601 is compressed again, the air can enter the slurry better to form foam. When the foam carrying minerals floats to the scraper 12, the rotating shaft 7 drives the scraper 12 to rotate, scraping the foam down into the feeding tray 2. The discharge plate 121 carries the foam to the discharge port 201 for collection.

[0113] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flotation apparatus, comprising: Flotation tank with an open top (1); A feeding mechanism is provided on one side of the flotation tank (1) for feeding slurry into the flotation tank (1); The first gantry (4) is set on top of the flotation tank (1); The pivot (7) is rotatably connected to the bottom of the first gantry frame (4); Ventilation channel (702) is provided at the top of the rotating shaft (7); Multiple air outlets (703) are provided, all located on the circumferential surface of the rotating shaft (7); and The stirring assembly (701) is provided in multiple sets, all of which are fixed on the circumferential surface of the rotating shaft (7); Its characteristic is that it further includes: Hollow tube (13) is fixed to the bottom of the first gantry frame (4), and the top of the hollow tube (13) penetrates the top of the first gantry frame (4); The screw (6) is rotatably connected inside the hollow tube (13); Nut (601) is threaded onto the circumferential surface of the screw (6) and fits against the inner wall of the hollow tube (13); Two air vents (604) are provided, symmetrically opened on both sides of the top of the nut (601); Hollow seat (8) is fixed to the inner wall of the hollow tube (13); Two air compressor rods (603) are provided, both of which are fixed to the top of the hollow seat (8) and movably inserted into the two air compressor holes (604); A drive mechanism is connected to the rotating shaft (7) and the screw (6) to enable both to rotate; The drive mechanism includes: The second gantry (401) is fixed to the top of the first gantry (4). The motor (5) is fixed to the bottom of the second gantry (401), and the output end of the motor (5) moves through the bottom of the first gantry (4) and extends downward. The first gear (503) is fixed to the circumferential surface of the extended portion of the output end of the motor (5); The second gear (504) is fixed to the circumferential surface of the rotating shaft (7) and meshes with the first gear (503); The first half gear (501) is fixed to the circumferential surface of the output end of the motor (5) and located on the upper side of the first gantry (4); The second half gear (502) is fixed to the circumferential surface of the screw (6); A ring rack (506) is disposed on the upper side of the first gantry (4) and meshes with both the first half gear (501) and the second half gear (502); Two sliding rods (505) are provided, which are respectively fixed on both sides of the annular rack (506), and the ends of the two sliding rods (505) that are far apart respectively pass through the two sides of the second gantry (401) and extend outward.

2. The flotation apparatus according to claim 1, characterized in that: A one-way valve (10) is fixed to the inner circumference of the hollow tube (13), and the one-way valve (10) is located on the lower side of the hollow seat (8).

3. The flotation apparatus according to claim 2, characterized in that: The hollow tube (13) has a cross support ring (602) and a straight support ring (607) fixed on its inner circumference. The bottom of the screw (6) is rotatably connected to the top of the straight support ring (607). The cross support ring (602) is sleeved on the circumferential surface of the screw (6). Two limiting rods (605) are fixed between the close ends of the cross support ring (602) and the straight support ring (607). The nut (601) has two limiting holes (606) on its top. The nut (601) is slidably connected to the circumferential surface of the two limiting rods (605) through the two limiting holes (606).

4. The flotation apparatus according to claim 3, characterized in that: A feeding tray (2) is fixed on the circumferential surface of the flotation tank (1). The first gantry frame (4) is fixed on the top of the feeding tray (2). A scraper (12) is fixed on the circumferential surface of the rotating shaft (7). A discharge plate (121) is fixed at one end of the scraper (12). The discharge plate (121) matches the feeding tray (2). A discharge port (201) is opened in the feeding tray (2).

5. A flotation apparatus according to claim 4, characterized in that: Guide rods (6031) are fixed to the top of both of the air compressor rods (603).

6. A flotation apparatus according to claim 5, characterized in that: The rotating shaft (7) is fitted with a protective cover (9) on the circumferential surface inside the flotation tank (1). An impeller (11) is fixed on the circumferential surface of the flotation tank (1). The protective cover (9) covers the multiple air outlets (703) inside. The impeller (11) is located below the air outlets (703).

7. A flotation apparatus according to claim 6, characterized in that: The feeding mechanism includes: A support ring (301) is fixed to the circumferential surface of the flotation tank (1); The feed hopper (3) is fixed inside the support ring (301); and The feed pipe (302) has one end fixed to the bottom of the feed tank (3) and connected to the feed tank (3), and the other end of the feed pipe (302) passes through the flotation tank (1) and the protective cover (9) and extends into the interior of the protective cover (9).

8. A flotation apparatus according to claim 7, characterized in that: Two second reinforcing plates (901) are fixed on the circumferential surface of the protective cover (9). Both ends of the two second reinforcing plates (901) are fixed to the inner wall of the flotation tank (1). The bottom of the rotating shaft (7) is rotatably connected to a first reinforcing plate (704). Both ends of the first reinforcing plate (704) are fixed to the inner wall of the flotation tank (1). A first feed pipe (101) is provided at the bottom of the flotation tank (1). A valve (102) is fixedly provided on the first feed pipe (101).

9. A method of using a flotation device, applied to a flotation device according to any one of claims 7-8, characterized in that, Includes the following steps: S1. First, start the motor (5), so that the output end of the motor (5) drives the first half gear (501) and the first gear (503) to rotate. The first half gear (501) drives the ring rack (506) to reciprocate. The ring rack (506) drives the second half gear (502) to rotate and reciprocate. The second half gear (502) drives the screw (6) to rotate in both directions, so that the nut (601) on the screw (6) moves up and down, and performs piston-like push air intake, so that air can be better input from the hollow tube (13) into the flotation tank (1). At the same time, the first gear (503) drives the meshing second gear (504) to rotate, thereby driving the rotating shaft (7) to rotate. The rotating shaft (7) drives the impeller (11) to rotate. S2. Then the slurry is added from the feed tank (3) and fed into the flotation tank (1) through the feed pipe (302) and located on the upper side of the impeller (11). The centrifugal force is generated by the rotation of the impeller (11). At this time, the slurry is thrown to the sides, and air enters the flotation tank (1) and reagents are added into the flotation tank (1). S3. When the slurry is added and the protective cover (9) is submerged, the impeller (11) drives multiple stirring components (701) to stir, so that the slurry and reagents in the flotation tank (1) can be fully mixed to form foam. At this time, the mixed liquid will enter the shaft (7). Through the piston movement of the nut (601), when the nut (601) moves down, it will be embedded in the surface of the two air compressors (603), so that the air in the hollow tube (13) can be pressed down and enter the slurry from the air outlet (703), so that the minerals to be floated attach to the bubbles to form a mineralized foam layer, and so that the lighter minerals adhere to the foam. When the nut (601) moves upward, it will create a negative pressure downward. At this time, the one-way valve (10) can prevent the slurry from flowing back, so that the nut (601) is separated from the air compressor (603), and the air can re-enter the hollow tube (13). When the nut (601) is compressed here, the air can enter the slurry better and form foam. When the foam carrying the mineral floats to the scraper (12), the scraper (12) is rotated by the shaft (7) to scrape the foam down into the feeding plate (2). The foam is then carried to the discharge port (201) by the discharge plate (121) for collection.

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