A heating flotation device for scheelite concentration

Abstract

This invention relates to the field of flotation machinery technology, specifically to a heated flotation device for the beneficiation of scheelite, comprising a flotation box, an internal main shaft, and a stirring assembly. The stirring assembly includes a first stirring frame, a second stirring frame, and a third stirring frame distributed vertically. The first stirring frame includes a first connecting frame, with a first corrugated plate rotatably mounted at both ends. The second stirring frame includes a second connecting frame, with a second corrugated plate rotatably mounted at both ends. The third stirring frame includes a third connecting frame, with a third corrugated plate rotatably mounted at both ends. The first, second, and third corrugated plates all revolve around the main shaft, while the second and third corrugated plates can rotate on their own axes, causing the slurry near the main shaft to flow away from it, thereby improving the stirring effect of the slurry.

Description

Technical Field

[0001] The invention relates to the technical field of flotation machinery, in particular to a heating flotation device for scheelite concentration. Background Art

[0002] Scheelite is an ore with the appearance of granular stone, white with yellow, and fatty luster. It is the main raw material for tungsten smelting. In the prior art, a flotation device is generally used to float scheelite. The existing flotation device generates bubbles by injecting reagents and air into the slurry and stirring it. Then the bubbles drive the target particles to float up, and finally collect the foam to obtain the flotation product.

[0003] During the flotation process, the ore pulp generally needs to be stirred so that the ore pulp and reagents are fully mixed to achieve efficient flotation. However, the stirring structure in the existing flotation device is relatively simple and cannot ensure sufficient mixing of the ore pulp and reagents. Summary of the invention

[0004] Based on this, it is necessary to provide a heating flotation device for scheelite concentration to address the current technical problem that the slurry and reagents cannot be repeatedly mixed.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A scheelite concentration heating flotation device comprises a flotation box, wherein a main shaft is arranged inside the flotation box, and a stirring assembly is arranged on the main shaft, wherein the stirring assembly comprises a first stirring frame, a second stirring frame and a third stirring frame which are sequentially arranged from top to bottom, wherein the first stirring frame comprises a first connecting frame, wherein the length of the first connecting frame extends in a horizontal direction and both ends of the first connecting frame along the length direction are rotatably provided with a first wave plate, wherein the second stirring frame comprises a second connecting frame, wherein the length of the second connecting frame extends in a horizontal direction and both ends of the second connecting frame along the length direction are rotatably provided with a second wave plate, wherein the third stirring frame comprises a third connecting frame, wherein the length of the third connecting frame extends in a horizontal direction and both ends of the third ... A third wave plate is rotatably provided at each end; the first wave plate, the second wave plate and the third wave plate are distributed along the radial direction of the main shaft and gradually approach the main shaft, the third connecting frame is fixedly connected to the main shaft, the first connecting frame and the second connecting frame are rotatably connected to the main shaft, a first transmission structure is provided on the first connecting frame, and a second transmission structure is provided on the second connecting frame, the second transmission structure enables the third connecting frame to drive the second connecting frame to rotate around the main shaft while causing the third wave plate to rotate by a certain angle; the first transmission structure enables the second connecting frame to drive the first connecting frame to rotate around the main shaft while causing the second wave plate to rotate by a certain angle, and the rotation of the third wave plate and the second wave plate can cause the slurry close to the main shaft to flow in the direction away from the main shaft.

[0007] Further, the first transmission structure includes a first arc-shaped rack fixedly arranged on the first connecting frame, the first arc-shaped rack is arranged around the main shaft, and first baffles are provided at both ends of the first arc-shaped rack, a second hinge shaft is provided on the second wave plate, the second hinge shaft is hinged on the second connecting frame, a second transmission gear is provided on the second hinge shaft, the second transmission gear cooperates with the first arc-shaped rack for transmission, and the first baffle cooperates with the second transmission gear for blocking; the second transmission structure includes a second arc-shaped rack fixedly arranged on the second connecting frame, the second arc-shaped rack is arranged around the main shaft, and second baffles are provided at both ends of the second arc-shaped rack, a third hinge shaft is provided on the third wave plate, the third hinge shaft is hinged on the third connecting frame, a third transmission gear is provided on the third hinge shaft, the third transmission gear cooperates with the second arc-shaped rack for transmission, and the second baffle cooperates with the third transmission gear for blocking.

[0008] Furthermore, a toggle assembly is provided at the bottom of the stirring assembly, and the toggle assembly includes a lifting cylinder, and a plurality of toggle plates are evenly distributed around the lifting cylinder, and the toggle plates are slidably matched with the bottoms of the first wave plate, the second wave plate and the third wave plate; the first wave plate, the second wave plate and the third wave plate can all be deformed in the up and down directions; a bubble generator is provided at the bottom of the flotation box, and the bubble generator includes a chassis, and a limit seat is provided at the center of the chassis, and the lifting cylinder can reciprocate up and down along the limit seat while rotating with the main shaft.

[0009] Furthermore, a spiral lifting groove is provided on the outer circumferential surface of the limiting seat, and a sliding block is provided inside the lifting cylinder, and the sliding block can slide along the spiral lifting groove.

[0010] Furthermore, a keyway is provided on the main shaft, and a spline is provided inside the lifting cylinder, and the spline and the keyway are slidably matched up and down.

[0011] Furthermore, a flow stabilizing component is also provided on the main shaft, and the flow stabilizing component is located above the stirring component. The flow stabilizing component includes a first flow guide frame, a second flow guide frame and a third flow guide frame which are distributed along the main shaft from top to bottom, and the first flow guide frame, the second flow guide frame and the third flow guide frame are all parallel to the horizontal plane. The first flow guide frame is provided with a plurality of first flow guide plates distributed around the main shaft, and the first flow guide plates extend in the up and down directions. The second flow guide frame is provided with a plurality of second flow guide plates distributed around the main shaft, and the second flow guide plates have a first angle with the horizontal plane; the third flow guide frame is provided with a plurality of third flow guide plates distributed around the main shaft, and the third flow guide plates have a second angle with the horizontal plane, and the first angle is greater than the second angle.

[0012] Furthermore, the side surfaces of the second guide plate and the third guide plate are both provided with a plurality of hemispherical protrusions, and the hemispherical protrusions are used to break large bubbles in the foam.

[0013] Furthermore, the first flow guide frame, the second flow guide frame and the third flow guide frame are all annular frames, the annular frames are arranged in close contact with the inner wall of the flotation box, the first flow guide plate is fixed to the first flow guide frame, the second flow guide frame and the third flow guide frame are each provided with a plurality of rotating rods extending radially along the main axis, the second flow guide plate and the third flow guide plate are each provided with a fixed cylinder, the rotating rod is provided with a clamping block, the inner wall of the fixed cylinder is provided with an arc-shaped limit groove, the clamping block can slide along the arc-shaped limit groove and cooperate with the groove wall of the arc-shaped limit groove to stop.

[0014] Furthermore, a receiving groove is provided above the flotation box, the receiving groove is communicated with the interior of the flotation box, and the receiving groove is arranged corresponding to the flow stabilizing component.

[0015] Furthermore, a cover plate is provided on the top of the flotation box, a driving motor is fixedly provided on the cover plate, and an output end of the driving motor is transmission-connected to the main shaft.

[0016] The beneficial effects of the present invention are:

[0017] In the scheelite concentration heating flotation device provided by the present invention, the rotation of the main shaft drives the third connecting frame to rotate, the third connecting frame drives the second connecting frame to rotate through the second transmission structure, and the third wave plate rotates at the same time, the second connecting frame drives the first connecting frame to rotate through the first transmission structure, and the second wave plate rotates at the same time, so that the first wave plate, the second wave plate and the third wave plate all revolve around the main shaft, and at the same time, the rotation of the second wave plate and the third wave plate can make the slurry close to the main shaft flow in the direction away from the main shaft, so that the slurry can flow circumferentially in the flotation box while constantly approaching and moving away from the main shaft, thereby improving the stirring effect of the slurry.

[0018] Second, when the main shaft rotates, the main shaft drives the lifting cylinder to rotate and move back and forth up and down along the limit seat, so that the toggle plate rotates synchronously and moves back and forth up and down. During the rotation process, the toggle plate can continuously push the first wave plate, the second wave plate and the third wave plate, causing them to deform in the up and down directions, thereby squeezing the slurry between the first wave plate and the second wave plate and between the second wave plate and the third wave plate, promoting the flow of the slurry and making the mixing of the slurry and the air more uniform.

[0019] Third, the slurry after being fully stirred and mixed will produce a large amount of foam with the air. A large amount of foam continues to rise. The rising speed of the foam gradually slows down under the collision of the third guide plate and the second guide plate, so that the floating amplitude of the foam gradually decreases until it reaches a calm state to form a foam layer, and then rises steadily under the guidance of the first guide plate, reducing the rupture of bubbles during the rising process and improving the flotation efficiency.

[0020] Fourth, the large bubbles in the foam will be broken in advance by the hemispherical protrusions on the third guide plate and the second guide plate during the rising process, avoiding the large bubbles from breaking again when they move upward to the top of the foam layer, causing more small bubbles in the foam layer to break, thereby improving the flotation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a scheelite concentration heating flotation device provided in one embodiment of the present invention;

[0022] Figure 2 A side view of a scheelite concentration heating flotation device provided in one embodiment of the present invention;

[0023] Figure 3 for Figure 2 Middle AA section view;

[0024] Figure 4 for Figure 2 Middle BB section view;

[0025] Figure 5 A schematic diagram of the internal structure of a scheelite concentration heating flotation device provided in one embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the structure of a stirring assembly in a scheelite concentration heating flotation device provided in one embodiment of the present invention;

[0027] Figure 7 An exploded view of the internal structure of a scheelite concentration heating flotation device provided in one embodiment of the present invention;

[0028] Figure 8 An exploded view of the structure of a flow stabilizing component in a scheelite concentration heating flotation device provided in one embodiment of the present invention;

[0029] Fig. 9 A schematic diagram of the structure of the third guide plate in the heating flotation device for scheelite concentration provided in one embodiment of the present invention;

[0030] Fig.10 for Fig. 9 Middle CC section view.

[0031] in:

[0032] 100, chassis; 101, connecting pipe; 102, limiting seat; 103, spiral lifting tank; 200, flotation box; 201, storage tank; 202, discharge pipe; 300, cover plate; 400, drive motor; 401, main shaft; 402, keyway; 500, stirring assembly; 510, first stirring frame; 511, first connecting frame; 513, first arc-shaped rack; 514, first baffle; 515, first hinge shaft; 516, first wave plate; 520, second stirring frame; 521, second connecting frame; 523, second arc-shaped rack; 524, second baffle; 5 25. Second hinge axis; 526. Second wave plate; 530. Third stirring frame; 531. Third connecting frame; 535. Third hinge axis; 536. Third wave plate; 600. Flow stabilizing assembly; 610. First guide frame; 611. First guide plate; 620. Second guide frame; 621. Second guide plate; 630. Third guide frame; 631. Third guide plate; 6311. Fixed cylinder; 6312. Hemispherical protrusion; 6313. Second limiting groove; 632. Turn rod; 6321. Block; 700. Toggle assembly; 701. Spline; 702. Toggle plate. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] like Figures 1 to 10 As shown, a scheelite concentration heating flotation device provided by an embodiment of the present invention includes a flotation box 200, wherein a main shaft 401 is provided inside the flotation box 200, and a stirring assembly 500 is provided on the main shaft 401, wherein the stirring assembly 500 includes a first stirring frame 510, a second stirring frame 520 and a third stirring frame 530 which are sequentially distributed from top to bottom, wherein the first stirring frame 510 includes a first connecting frame 511, and both ends of the first connecting frame 511 along the length direction are rotatably provided with a first wave plate 516, the second stirring frame 520 includes a second connecting frame 521, and both ends of the second connecting frame 521 along the length direction are rotatably provided with a second wave plate 526, the third stirring frame 530 includes a third connecting frame 531, and both ends of the third connecting frame 531 along the length direction are rotatably provided with a third wave plate 536; the first wave plate 516 The second wave plate 526 and the third wave plate 536 are distributed along the radial direction of the main shaft 401 and gradually approach the main shaft 401. The third connecting frame 531 is fixedly connected to the main shaft 401, and the first connecting frame 511 and the second connecting frame 521 are rotatably connected to the main shaft 401. The first connecting frame 511 is provided with a first transmission structure, and the second connecting frame 521 is provided with a second transmission structure. The second transmission structure enables the third connecting frame 531 to drive the second connecting frame 521 to rotate around the main shaft 401 while the third wave plate 536 rotates a certain angle. The first transmission structure enables the second connecting frame 521 to drive the first connecting frame 511 to rotate around the main shaft 401 while the second wave plate 526 rotates a certain angle. The rotation of the third wave plate 536 and the second wave plate 526 can make the slurry close to the main shaft 401 flow in the direction away from the main shaft 401. The slurry is a liquid mixed with scheelite slurry and reagents. The first connecting frame 511 , the second connecting frame 521 and the third connecting frame 531 are all arranged in sliding contact with the inner wall of the flotation box 200 .

[0037] In this way, the rotation of the main shaft 401 drives the third connecting frame 531 to rotate, and the third connecting frame 531 drives the second connecting frame 521 to rotate through the second transmission structure, while the third wave plate 536 rotates, and the second connecting frame 521 drives the first connecting frame 511 to rotate through the first transmission structure, while the second wave plate 526 rotates, so that the first wave plate 516, the second wave plate 526 and the third wave plate 536 all revolve around the main shaft 401, and at the same time, the rotation of the second wave plate 526 and the third wave plate 536 can make the slurry close to the main shaft 401 flow in the direction away from the main shaft 401, so that the slurry can flow circumferentially in the flotation box 200 while constantly approaching and moving away from the main shaft 401, thereby improving the stirring effect of the slurry.

[0038] In one embodiment, the first wave plate 516 is provided with a first hinge shaft 515, and the first hinge shaft 515 is hinged on the first connecting frame 511. The first transmission structure includes a first arc-shaped rack 513 fixedly provided on the first connecting frame 511, the first arc-shaped rack 513 is arranged around the main shaft 401, and both ends of the first arc-shaped rack 513 are provided with a first baffle 514, the second wave plate 526 is provided with a second hinge shaft 525, the second hinge shaft 525 is hinged on the second connecting frame 521, and the second hinge shaft 525 is provided with a second transmission gear, the second transmission gear is in transmission cooperation with the first arc-shaped rack 513, and the first baffle 514 is in blocking cooperation with the second transmission gear; The second transmission structure includes a second arc-shaped rack 523 fixed on the second connecting frame 521, the second arc-shaped rack 523 is arranged around the main shaft 401, and second baffles 524 are provided at both ends of the second arc-shaped rack 523. The third wave plate 536 is provided with a third hinge shaft 535, and the third hinge shaft 535 is hinged to the third connecting frame 531. The third hinge shaft 535 is provided with a third transmission gear, and the third transmission gear is matched with the second arc-shaped rack 523 for transmission, and the second baffle 524 is matched with the third transmission gear for blocking.

[0039] In the initial state, the third transmission gear is located at the middle position of the second arc-shaped rack 523 , and the second transmission gear is located at the middle position of the first arc-shaped rack 513 .

[0040] In one embodiment, a toggle assembly 700 is provided at the bottom of the stirring assembly 500, and the toggle assembly 700 includes a lifting cylinder, and a plurality of toggle plates 702 are evenly distributed around the lifting cylinder, and the toggle plates 702 are slidably matched with the bottoms of the first wave plate 516, the second wave plate 526, and the third wave plate 536; the first wave plate 516, the second wave plate 526, and the third wave plate 536 are rubber plates, and can be deformed in the up and down directions; a bubble generator is provided at the bottom of the flotation box 200, and the bubble generator includes a chassis 100, and a limit seat 102 is provided at the center of the chassis 100, and the lifting cylinder can reciprocate up and down along the limit seat 102 while rotating with the main shaft 401. The chassis 100 is provided with a plurality of air inlet holes, and the chassis 100 is connected to a connecting pipe 101, and the connecting pipe 101 is connected to an air pump, and air is injected into the flotation box 200 through the air pump, so that the slurry generates foam. The flotation box 200 is provided with a feed port (not shown in the figure), and the feed port is arranged corresponding to the stirring assembly 500. The slurry enters the flotation box 200 through the feed port.

[0041] When the lifting cylinder rotates and moves back and forth up and down, the toggle plate 702 rotates and moves back and forth synchronously. During the rotation process, the toggle plate 702 can continuously push the first wave plate 516, the second wave plate 526 and the third wave plate 536, causing them to deform in the up and down directions, thereby squeezing the slurry between the first wave plate 516 and the second wave plate 526 and between the second wave plate 526 and the third wave plate 536 to promote the flow of the slurry.

[0042] In one embodiment, a spiral lifting groove 103 is provided on the outer circumference of the limit seat 102, and a slider is provided inside the lifting cylinder, and the slider can slide along the spiral lifting groove 103. The spiral lifting groove 103 includes a spiral groove and a vertical groove, and the slider slides along the spiral groove to realize the upward movement and rotation of the lifting cylinder, and the vertical groove realizes the downward reset of the lifting cylinder.

[0043] In one embodiment, the main shaft 401 is provided with a keyway 402, and the interior of the lifting cylinder is provided with a spline 701, and the spline 701 is slidably matched with the keyway 402. In this way, the lifting cylinder can slide up and down along the main shaft 401.

[0044] In one embodiment, a flow stabilizing component 600 is further provided on the main shaft 401, and the flow stabilizing component 600 is located above the stirring component 500. The flow stabilizing component 600 includes a first flow guide frame 610, a second flow guide frame 620 and a third flow guide frame 630 distributed along the main shaft 401 from top to bottom. The first flow guide frame 610, the second flow guide frame 620 and the third flow guide frame 630 are all parallel to the horizontal plane. The first flow guide frame 610 is provided with a plurality of first flow guide plates 611 distributed around the main shaft 401, and the first flow guide plates 611 extend in the up and down directions. The second flow guide frame 620 is provided with a plurality of second flow guide plates 621 distributed around the main shaft 401, and the second flow guide plates 621 have a first angle with the horizontal plane; the third flow guide frame 630 is provided with a plurality of third flow guide plates 631 distributed around the main shaft 401, and the third flow guide plates 631 have a second angle with the horizontal plane, and the first angle is greater than the second angle. A large amount of foam will be generated after the slurry is stirred and mixed with air. The rising speed of the foam will gradually slow down under the collision of the third guide plate 631 and the second guide plate 621, so that the floating amplitude of the foam will gradually decrease until it reaches a calm state to form a foam layer, and rises under the guidance of the first guide plate 611, reducing the possibility of bubble bursting during the rising process and improving the flotation efficiency.

[0045] In one embodiment, the side surfaces of the second guide plate 621 and the third guide plate 631 are both provided with a plurality of hemispherical protrusions 6312, and the hemispherical protrusions 6312 are used to break large bubbles in the foam. In this way, the large bubbles are broken in advance, so that the large bubbles are prevented from breaking when they move upward to the top of the foam layer, thereby causing more small bubbles in the foam layer to break, thereby improving the flotation effect.

[0046] In one embodiment, the first guide frame 610, the second guide frame 620 and the third guide frame 630 are all annular frames, and the annular frames are arranged in close contact with the inner wall of the flotation box 200, the first guide plate 611 is fixedly arranged with the first guide frame 610, the second guide frame 620 and the third guide frame 630 are both provided with a plurality of rotating rods 632 extending radially along the main shaft 401, the second guide plate 621 and the third guide plate 631 are both provided with a fixed cylinder 6311, and the rotating rod 632 is provided with a clamping block 6321. The inner wall of the fixed cylinder 6311 of the second guide plate 621 is provided with a first limiting groove, and the inner wall of the fixed cylinder 6311 of the third guide plate 631 is provided with a second limiting groove 6313, and the first limiting groove and the second limiting groove 6313 are both coaxially arranged with the fixed cylinder 6311 and are both arc-shaped limiting grooves.

[0047] The arc length of the first limiting groove (not shown in the figure) on the second guide plate 621 is smaller than the arc length of the second limiting groove 6313 on the third guide plate 631. In the initial state, the block 6321 of the second guide frame 620 is located in the middle position of the first limiting groove, and the block 6321 of the third guide frame 630 is located in the middle position of the second limiting groove 6313, and the second guide plate 621 and the third guide plate 631 are both in a vertical state. After the main shaft 401 rotates to drive the slurry to flow, the slurry pushes the second guide plate 621 and the third guide plate 631 to deflect, and then, the block 6321 of the second guide frame 620 is matched with the groove wall of the first limiting groove, and the block 6321 of the third guide frame 630 is matched with the groove wall of the second limiting groove 6313, so that the second guide plate 621 has a first angle with the horizontal plane, and the third guide plate 631 has a second angle with the horizontal plane.

[0048] In one embodiment, a receiving tank 201 is provided above the flotation box 200, the receiving tank 201 is communicated with the inside of the flotation box 200, and the receiving tank 201 is provided corresponding to the flow stabilizing assembly 600. A discharge pipe 202 is provided on the receiving tank 201, and the flotated foam is collected through the discharge pipe 202.

[0049] In one embodiment, a cover plate 300 is disposed on the top of the flotation box 200 , a driving motor 400 is fixedly disposed on the cover plate 300 , and an output end of the driving motor 400 is drivingly connected to a main shaft 401 .

[0050] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0051] The slurry is fed into the flotation box 200 through the feed port, and then the air pump is turned on to allow air to enter the bottom plate 100 through the connecting pipe 101, and then enter the flotation box 200 from the air inlet on the bottom plate 100. Then the driving motor 400 drives the main shaft 401 to rotate, and the main shaft 401 synchronously drives the flow stabilizing component 600, the stirring component 500 and the toggle component 700 to reciprocate.

[0052] Taking the counterclockwise rotation of the main shaft 401 as an example, since the first connecting frame 511, the second connecting frame 521 and the third connecting frame 531 are all arranged in sliding contact with the inner wall of the flotation box 200, under the action of friction, the first connecting frame 511 and the second connecting frame 521 remain stationary, and the main shaft 401 first drives the third connecting frame 531 to rotate counterclockwise, and the third connecting frame 531 drives the third wave plate 536 to revolve around the main shaft 401. At the same time, the third hinge shaft 535 on the third connecting frame 531 slides along the second arc-shaped rack 523, so that the third hinge shaft 535 5 rotates counterclockwise, and then the third wave plate 536 rotates counterclockwise around the third hinge shaft 535, so that the front end of the third wave plate 536 is close to the main shaft 401 (the end of the third wave plate 536 that first moves the slurry around the rotation direction is set as the front end, and the other end is set as the end), and the end of the third wave plate 536 is away from the main shaft 401; when the third transmission gear moves to the second baffle plate 524 of the second arc-shaped rack 523, the third connecting frame 531 drives the second connecting frame 521 to rotate, so that the second connecting frame 5 21 drives the second wave plate 526 to revolve around the main shaft 401, and at the same time, the second hinge shaft 525 on the second connecting frame 521 slides along the first arc-shaped rack 513, so that the second transmission gear on the second hinge shaft 525 rotates counterclockwise, so that the second wave plate 526 rotates counterclockwise around the second hinge shaft 525, so that the front end of the second wave plate 526 is close to the main shaft 401, and the rear end of the second wave plate 526 is away from the main shaft 401; when the second transmission gear moves to the first baffle plate 514 of the first arc-shaped rack 513, The second connecting frame 521 drives the first connecting frame 511 to rotate, so that the first connecting frame 511 drives the first wave plate 516 to revolve around the main axis 401, thereby realizing that the first wave plate 516, the second wave plate 526 and the third wave plate 536 all revolve around the main axis 401, and the front ends of the third wave plate 536 and the second wave plate 526 are close to the main axis 401, so that the slurry flows circumferentially in the flotation box 200 while continuously flowing in the direction close to the main axis 401 and away from the main axis 401, thereby improving the stirring effect of the slurry and improving the mixing effect of the slurry and air.

[0053] At the same time, when the main shaft 401 rotates, the main shaft 401 drives the lifting cylinder to rotate and move back and forth up and down along the limit seat 102, so that the toggle plate 702 rotates synchronously and moves back and forth up and down. During the rotation process, the toggle plate 702 can continuously push the first wave plate 516, the second wave plate 526 and the third wave plate 536, causing them to deform in the up and down directions, thereby squeezing the slurry between the first wave plate 516 and the second wave plate 526 and between the second wave plate 526 and the third wave plate 536, promoting the flow of the slurry and making the mixing of the slurry and the air more uniform.

[0054] The agitated slurry pushes the second guide plate 621 and the third guide plate 631 to deflect, and then the block 6321 cooperates with the groove wall of the arc-shaped limit groove to make the second guide plate 621 have a first angle with the horizontal plane, and the third guide plate 631 has a second angle with the horizontal plane. The fully stirred and mixed slurry will produce a large amount of foam with the air, and a large amount of foam will continue to rise. The rising speed of the foam gradually slows down under the collision of the third guide plate 631 and the second guide plate 621, so that the floating amplitude of the foam gradually decreases until it reaches a calm state to form a foam layer, and it rises steadily under the guidance of the first guide plate 611, reducing the situation of bubble rupture during the rising process and improving the flotation efficiency.

[0055] Among them, the large bubbles in the foam will be broken in advance by the hemispherical protrusions 6312 on the third guide plate 631 and the second guide plate 621 during the rising process, avoiding the large bubbles from breaking again when moving upward to the top of the foam layer, causing more small bubbles in the foam layer to break, thereby improving the flotation effect.

[0056] Then, the main shaft 401 is controlled to rotate clockwise, driving the flow stabilizing component 600, the stirring component 500 and the toggle component 700 to rotate in the clockwise direction. The specific rotation process is similar to the counterclockwise rotation process of the main shaft 401, which will not be repeated here.

[0057] Finally, the foam layer in the storage tank 201 is discharged and collected through the discharge pipe 202, and then dehydrated by a concentrator and solid-liquid separated by a compressor. The solid particles are dried by a dryer to obtain the selected scheelite.

[0058] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A heating flotation device for scheelite concentration, characterized in that: The invention comprises a flotation box, wherein a main shaft is provided inside the flotation box, and a stirring assembly is provided on the main shaft, wherein the stirring assembly comprises a first stirring frame, a second stirring frame and a third stirring frame which are sequentially distributed from top to bottom, wherein the first stirring frame comprises a first connecting frame, wherein the length of the first connecting frame extends in the horizontal direction, and first wave plates are rotatably provided at both ends of the first connecting frame along the length direction, wherein the second stirring frame comprises a second connecting frame, wherein the length of the second connecting frame extends in the horizontal direction, and second wave plates are rotatably provided at both ends of the second connecting frame along the length direction, wherein the third stirring frame comprises a third connecting frame, wherein the length of the third connecting frame extends in the horizontal direction, and third wave plates are rotatably provided at both ends of the third connecting frame along the length direction; the first wave plates, the second wave plates and the third wave plates are distributed along the radial direction of the main shaft and gradually approach the main shaft, wherein the third connecting frame is fixedly connected to the main shaft, and the first connecting frame and the second connecting frame are rotatably connected to the main shaft, wherein a first transmission structure is provided on the first connecting frame, and a second transmission structure is provided on the second connecting frame, wherein the second transmission structure enables the third connecting frame to drive the second connecting frame to rotate around the main shaft while enabling the third wave plate to rotate a certain amount. Angle; The first transmission structure enables the second connecting frame to drive the first connecting frame to rotate around the main shaft while enabling the second wave plate to rotate at a certain angle. The rotation of the third wave plate and the second wave plate can make the slurry close to the main shaft flow in the direction away from the main shaft. The first transmission structure includes a first arc-shaped rack fixedly arranged on the first connecting frame, the first arc-shaped rack is arranged around the main shaft, and first baffles are arranged at both ends of the first arc-shaped rack. A second hinge shaft is arranged on the second wave plate, the second hinge shaft is hinged on the second connecting frame, and a second transmission gear is arranged on the second hinge shaft. The second transmission gear cooperates with the first arc-shaped rack in transmission, and the first baffle cooperates with the second transmission gear in blocking. The second transmission structure includes a second arc-shaped rack fixedly arranged on the second connecting frame, the second arc-shaped rack is arranged around the main shaft, and second baffles are arranged at both ends of the second arc-shaped rack. A third hinge shaft is arranged on the third wave plate, the third hinge shaft is hinged on the third connecting frame, and a third transmission gear is arranged on the third hinge shaft. The third transmission gear cooperates with the second arc-shaped rack in transmission, and the second baffle cooperates with the third transmission gear in blocking.

2. The scheelite concentration heating flotation device according to claim 1 is characterized in that: A toggle assembly is provided at the bottom of the stirring assembly, and the toggle assembly includes a lifting cylinder, and a plurality of toggle plates are evenly distributed around the lifting cylinder, and the toggle plates are slidably matched with the bottoms of the first wave plate, the second wave plate and the third wave plate; the first wave plate, the second wave plate and the third wave plate can all be deformed in the up and down directions; a bubble generator is provided at the bottom of the flotation box, and the bubble generator includes a chassis, and a limit seat is provided at the center of the chassis, and the lifting cylinder can reciprocate up and down along the limit seat while rotating with the main shaft.

3. The scheelite concentration heating flotation device according to claim 2 is characterized in that: The outer circumferential surface of the limiting seat is provided with a spiral lifting groove, and the interior of the lifting cylinder is provided with a sliding block, and the sliding block can slide along the spiral lifting groove.

4. The scheelite concentration heating flotation device according to claim 2 is characterized in that: The main shaft is provided with a keyway, and the interior of the lifting cylinder is provided with a spline, and the spline is slidably matched with the keyway up and down.

5. The scheelite concentration heating flotation device according to claim 1, characterized in that: The main shaft is also provided with a flow stabilizing component, which is located above the stirring component. The flow stabilizing component includes a first flow guide frame, a second flow guide frame and a third flow guide frame which are sequentially distributed along the main shaft from top to bottom, and the first flow guide frame, the second flow guide frame and the third flow guide frame are all parallel to the horizontal plane. The first flow guide frame is provided with a plurality of first flow guide plates distributed around the main shaft, and the first flow guide plates extend in the up and down directions. The second flow guide frame is provided with a plurality of second flow guide plates distributed around the main shaft, and the second flow guide plates have a first angle with the horizontal plane; the third flow guide frame is provided with a plurality of third flow guide plates distributed around the main shaft, and the third flow guide plates have a second angle with the horizontal plane, and the first angle is greater than the second angle.

6. The scheelite concentration heating flotation device according to claim 5, characterized in that: The side surfaces of the second guide plate and the third guide plate are both provided with a plurality of hemispherical protrusions, and the hemispherical protrusions are used to break large bubbles in the foam.

7. The heating flotation device for scheelite concentration according to claim 5, characterized in that: The first flow guide frame, the second flow guide frame and the third flow guide frame are all annular frames, the annular frames are arranged in close contact with the inner wall of the flotation box, the first flow guide plate is fixed to the first flow guide frame, the second flow guide frame and the third flow guide frame are each provided with a plurality of rotating rods extending radially along the main axis, the second flow guide plate and the third flow guide plate are each provided with a fixed cylinder, the rotating rod is provided with a clamping block, the inner wall of the fixed cylinder is provided with an arc-shaped limiting groove, the clamping block can slide along the arc-shaped limiting groove and cooperate with the groove wall of the arc-shaped limiting groove to stop.

8. The scheelite concentration heating flotation device according to claim 5, characterized in that: A receiving groove is provided above the flotation box, the receiving groove is communicated with the interior of the flotation box, and the receiving groove is arranged corresponding to the flow stabilizing component.

9. The scheelite concentration heating flotation device according to claim 1, characterized in that: A cover plate is provided on the top of the flotation box, a driving motor is fixedly provided on the cover plate, and an output end of the driving motor is transmission-connected to the main shaft.

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