Coal flotation device and method

Abstract

The present invention relates to the technical field of flotation coal equipment, and more specifically, to a coal flotation device and method, comprising a support, a flotation box, a coal storage box, a plurality of feeding boxes and a control center, wherein the flotation box and the coal storage box are both arranged on the support, a plurality of the feeding boxes are arranged on the flotation box and are connected to the flotation box, the control center is arranged on the flotation box, the flotation device also comprises a stirring and mixing component and a coal taking component, the stirring and mixing component is arranged on the flotation box, the coal taking component is arranged on the flotation box, the coal taking component is connected to the stirring and mixing component, and the coal taking component provides power for the stirring and mixing component when working; while the coal taking component is working, the output shaft and the stirring blade can be controlled to rotate, and the position of the stirring blade can be adjusted and the generation of bubbles can be controlled at the same time, thereby improving the mixing of coal slurry and foaming agent and the floating efficiency of coal, and further improving the flotation effect of coal.

Description

Technical Field

[0001] The present invention relates to the technical field of coal flotation equipment, and more specifically, to a coal flotation device and method. Background Art

[0002] Coal plays an important role as an energy resource. Coal needs to be washed and processed before use. In the process of coal washing, fine particles of coal generally rely on flotation separation to achieve separation. In the process of flotation separation, fine particles of coal slurry enter the flotation machine or flotation tank. The bubble generating device in the flotation machine or flotation tank generates a large number of bubbles. The fine particles of coal slurry float to the upper layer of the flotation machine or flotation tank under the action of flotation agents and bubbles, and are separated by scrapers.

[0003] The existing flotation machine has a simple structure, and the position of the stirring blades in the flotation box is fixed, which is prone to stirring dead corners and leads to insufficient mixing of the frother and coal slurry. What further affects the flotation effect is that the scraper scrapes the floating coal for a long time, which easily leads to a large amount of coal sticking to the scraper surface. If it is not cleaned in time, it will easily affect the subsequent scraper work. In addition, the flat scraper has a poor coal grabbing effect and a slow speed. Summary of the invention

[0004] The object of the present invention is to provide a coal flotation device and method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A coal flotation device, comprising a support, a flotation box, a coal storage box, a plurality of feeding boxes and a control center, wherein the flotation box and the coal storage box are both arranged on the support, a plurality of the feeding boxes are arranged on the flotation box and the feeding boxes are connected to the flotation box, the control center is arranged on the flotation box, the coal storage box is arranged on one side of the flotation box through a connecting seat, the flotation device also comprises a stirring and mixing component and a coal taking component, the stirring and mixing component is arranged on the flotation box, and is used to mix and stir coal slurry and a frother, the coal taking component is arranged on the flotation box, and is used to input coal floating on the surface of the flotation box into the coal storage box, the coal taking component is connected to the stirring and mixing component, and the coal taking component provides power for the stirring and mixing component when working;

[0007] The stirring and mixing component includes a stirring jet structure, an air filter box and a shaking power output structure. The stirring jet structure is arranged in the flotation box, and is used to perform a mixing process on the coal slurry and the foaming agent and generate bubbles in the flotation box. The stirring jet structure is connected to the coal taking component, and the coal taking component provides power for the stirring jet structure when working. The air filter box is arranged on one side of the flotation box, and the air filter box is connected to the stirring jet structure. The shaking power output structure is arranged in the flotation box and is connected to the stirring jet structure, and is used to adjust the stirring area position and the bubble generating area position of the stirring jet structure.

[0008] A further technical solution of the present application is as follows: the stirring jet structure includes a sealing plate, an output shaft, a sleeve shaft, stirring blades and a plurality of jet heads, the sealing plate slides through the flotation box, the output shaft is movably arranged on the sealing plate, the sleeve shaft is movably sleeved on the output shaft, an input hole formed at one end of the output shaft is connected to the air filter box, the number of the stirring blades is several and they are distributed on the sleeve shaft, each of the stirring blades is equidistantly provided with a plurality of jet heads, a cavity is provided on the inner wall of the sleeve shaft, the cavity is connected to a through hole formed on the surface of the output shaft, a one-way valve is provided in the input hole and the through hole, the output shaft is connected to a coal taking assembly, the shaking power output structure is provided on the flotation box and is connected to an end of the sleeve shaft away from the air filter box, a sleeve plug is provided on the surface of the output shaft, and the sleeve plug is sealed and fitted with the inner wall of the cavity.

[0009] A further technical solution of the present application is as follows: a steering gear is sleeved on the output shaft, a rack is provided on the bracket, the rack is meshed with the steering gear, the output shaft is connected to the coal taking assembly, and the position of the output shaft and the sealing plate on the flotation box is adjusted when the coal taking assembly is working.

[0010] A further technical solution of the present application is as follows: the shaking power output structure includes a wave adjustment seat, a roller, a moving block and a pulling arm, the wave adjustment seat is arranged on the flotation box, the moving block is movably arranged on one side of the wave adjustment seat, a roller is movably arranged on the moving block, the roller and the surface of the wave adjustment seat are slidingly matched, the other end of the output shaft is slidably inserted on the moving block, the moving block is elastically connected by an elastic member and a sleeve shaft, the pulling arm is movably arranged on the wave adjustment seat, the pulling arm slides through the moving block and the two are elastically connected.

[0011] The present application has a further technical solution: the coal taking assembly includes a drive motor, a drive shaft, a coal taking arm, a transmission structure and a cleaning module, the drive motor is arranged on the flotation box, the drive shaft is movably arranged on the flotation box, the coal taking arm is sleeved on the outer wall of the drive shaft, the output end of the drive motor is connected to the drive shaft, the transmission structure is arranged between the drive shaft and the output shaft, the position of the output shaft and the sealing plate on the flotation box is adjusted by the transmission structure when the drive shaft rotates, a coal taking trough is centrally symmetrically formed on the coal taking arm, and the cleaning module is arranged between the flotation box and the coal taking trough for cleaning the coal taking trough.

[0012] The present application has a further technical solution: the transmission structure includes a mounting platform, a half gear, a sliding plate and two groups of teeth, the mounting platform is arranged on the flotation box, the half gear is arranged at one end of the drive shaft away from the drive motor, the sliding plate is movably arranged on the mounting platform, the two groups of teeth are symmetrically arranged on the inner wall of the sliding plate, one group of teeth is meshed with the half gear, and the sliding plate and the output shaft are movably connected.

[0013] The present application has a further technical solution: the cleaning module includes a first side plate, a second side plate, a slider, a guide column and a positioning structure; the bottom wall of the coal trough is arranged at an angle; the first side plate and the second side plate are respectively arranged on both sides of the coal trough and are slidably matched with each other; the slider is movably arranged on the coal taking rotating arm; the guide column is arranged on the slider; one end of the first side plate is movably mounted on the guide column and the two are elastically connected; the second side plate is connected to the slider; the positioning structure is arranged between the flotation box and the slider; and the position of the slider on the coal taking rotating arm is adjusted by the positioning structure when the coal taking rotating arm rotates.

[0014] A further technical solution of the present application is as follows: the positioning structure includes a positioning disk, a positioning groove and a resistance rod, the resistance rod is arranged on the slider, the positioning disk and the drive shaft are concentrically arranged and arranged on the flotation box, the positioning groove is arranged on the outer contour of the positioning disk, the positioning disk is cam-shaped, and the positioning groove and the resistance rod are slidably matched.

[0015] A further technical solution of the present application is: a screening module is arranged between the coal storage box and the sliding plate, which is used for secondary screening of the coal discharged from the coal chute. The screening module includes a filter plate and a push arm. The filter plate is movably arranged on the coal storage box and the two are elastically connected. One side of the filter plate is movably connected to the sliding plate through the push arm.

[0016] A coal flotation method is applied to the flotation device in the above technical solution, and the specific steps of the flotation method are as follows:

[0017] S100: Pour the coarse coal and water into the flotation box and mix them to form coal slurry. At the same time, the control center controls the feeding box to input the frother into the flotation box.

[0018] S200: By controlling the operation of the coal taking component, the operation of the coal taking component can control the operation of the stirring jet structure. When the stirring jet structure is operating, the foaming agent and the coal slurry can be stirred and mixed to facilitate the generation of bubbles in the coal slurry. At the same time, the stirring jet structure can generate a large number of bubbles and control the operation of the shaking power output structure to adjust the jet range and stirring range of the stirring jet structure.

[0019] S300: The coal that finally meets the quality standards floats on the surface of the flotation box, and the coal that meets the standards is transported to the coal storage box through the operation of the coal taking assembly.

[0020] Compared with the prior art, the technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0021] The embodiment of the present invention provides a coal taking component and a stirring and mixing component, and utilizes a mechanical linkage structure to not only meet the basic stirring and mixing work of coal slurry and frother and the selection of floating coal, but also can utilize a power source of the coal taking component to realize automatic cleaning of the coal taking trough on the coal taking rotating arm when the coal taking component is working, without the need for manual cleaning by staff, and the coordination between the coal taking trough and the cleaning structure improves the coal taking efficiency. In addition, when the coal taking component is working, it can control the rotation of the output shaft and the stirring blade, and can also adjust the position of the stirring blade and control the generation of bubbles at the same time, thereby improving the mixing work of the coal slurry and frother and the floating efficiency of the coal, and further improving the flotation effect of the coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a coal flotation device in an embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a coal taking assembly in a coal preparation and flotation device according to an embodiment of the present invention;

[0024] Figure 3 It is a partial cross-sectional view of a coal taking assembly in a coal preparation and flotation device according to an embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the position adjustment structure in the coal flotation device according to an embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the stirring and mixing assembly in the coal flotation device according to an embodiment of the present invention;

[0027] Figure 6It is a structural schematic diagram of a stirring jet structure in a coal preparation and flotation device according to an embodiment of the present invention;

[0028] Figure 7 It is a partial cross-sectional view of a sleeve shaft and an output shaft in a coal preparation and flotation device according to an embodiment of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the screening module in the coal flotation device in the embodiment of the present invention.

[0030] Explanation of the symbols in the schematic diagram:

[0031] 1- bracket, 2- flotation box, 3- feeding box, 4- control center, 5- driving motor, 6- coal taking arm, 7- coal taking trough, 8- adjusting plate, 9- first side plate, 10- slider, 11- guide column, 12- driving shaft, 13- half gear, 14- second side plate, 15- resistance rod, 16- adjusting slot, 17- air filter box, 18- mounting platform, 19- wave adjusting seat, 20- moving block, 21- roller, 22- pulling arm, 23- sleeve shaft, 24- sliding plate, 25- teeth, 26- output shaft, 27- spring, 28- stirring blade, 29- jet head, 30- rack, 31- steering gear, 32- input hole, 33- sleeve plug, 34- coal storage box, 35- filter plate, 36- push arm, 37- connecting seat. DETAILED DESCRIPTION

[0032] 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. The present invention is further described below in combination with the embodiments.

[0033] See also Figure 1-Figure 8 In one embodiment of the present application, a coal flotation device includes a support 1, a flotation box 2, a coal storage box 34, a plurality of feed boxes 3 and a control center 4, wherein the flotation box 2 and the coal storage box 34 are both arranged on the support 1, a plurality of the feed boxes 3 are arranged on the flotation box 2 and the feed boxes 3 are connected to the flotation box 2, the control center 4 is arranged on the flotation box 2, the coal storage box 34 is arranged on one side of the flotation box 2 through a connecting seat 37, the flotation device also includes a stirring and mixing component and a coal taking component, the stirring and mixing component is arranged on the flotation box 2, and is used to mix and stir the coal slurry and the frother, the coal taking component is arranged on the flotation box 2, and is used to input the coal floating on the surface of the flotation box 2 into the coal storage box 34, the coal taking component is connected to the stirring and mixing component, and the coal taking component provides power for the stirring and mixing component when working;

[0034] The stirring and mixing component includes a stirring jet structure, an air filter box 17 and a shaking power output structure. The stirring jet structure is arranged in the flotation box 2, and is used to perform the mixing process of the coal slurry and the foaming agent and generate bubbles in the flotation box 2. The stirring jet structure is connected to the coal taking component, and the coal taking component provides power for the stirring jet structure when working. The air filter box 17 is arranged on one side of the flotation box 2, and the air filter box 17 is connected to the stirring jet structure. The shaking power output structure is arranged in the flotation box 2 and is connected to the stirring jet structure, and is used to adjust the stirring area position and the bubble generating area position of the stirring jet structure.

[0035] In a specific case of the present embodiment, the stirring jet structure includes a sealing plate, an output shaft 26, a sleeve shaft 23, a stirring blade 28 and a plurality of jet heads 29, the sealing plate slides through the flotation box 2, the output shaft 26 is movably arranged on the sealing plate, the sleeve shaft 23 is movably sleeved on the output shaft 26, an input hole 32 formed at one end of the output shaft 26 is connected to the air filter box 17, the number of the stirring blades 28 is several and they are annularly arranged on the sleeve shaft 23, each of the stirring blades 28 is equidistantly provided with a plurality of jet heads 29, a cavity is provided on the inner wall of the sleeve shaft 23, the cavity is connected to the through hole formed on the surface of the output shaft 26, a one-way valve is provided in the input hole 32 and the through hole, the output shaft 26 is connected to the coal taking assembly, the shaking power output structure is provided on the flotation box 2 and is connected to the end of the sleeve shaft 23 away from the air filter box 17, a sleeve plug 33 is sleeved on the surface of the output shaft 26, and the sleeve plug 33 is sealed and fitted with the inner wall of the cavity.

[0036] In another specific case of this embodiment, a steering gear 31 is sleeved on the output shaft 26, a rack 30 is provided on the bracket 1, the rack 30 and the steering gear 31 are meshed, the output shaft 26 is connected to the coal taking assembly, and the coal taking assembly adjusts the position of the output shaft 26 and the sealing plate on the flotation box 2 when working.

[0037] In actual application, the coarse coal and water are poured into the flotation box 2 and mixed to form coal slurry. At the same time, the control center 4 controls the feeding box 3 to input the frother into the flotation box 2. By controlling the operation of the coal taking component, the coal taking component can control the sealing plate and the output shaft 26 to reciprocate along the flotation box 2. In this process, the meshing action between the rack 30 and the steering gear 31 can be used to control the output shaft 26 and the sleeve shaft 23 to rotate, thereby driving the stirring blade 28 and the jet head 29 to rotate, so as to stir the frother and the coal slurry. In this process, the shaking power output structure can be driven to work synchronously. When the shaking power output structure works, the sleeve shaft 23 can be controlled to rotate. The shaft 23 and the stirring blade 28 reciprocate relative to the output shaft 26 to adjust the positions of the stirring blade 28 and the nozzle 29. At the same time, during the reciprocating motion of the sleeve shaft 23 relative to the output shaft 26, the sleeve plug 33 can reciprocate relative to the cavity, so that the clean air filtered in the air filter box 17 is drawn into the cavity and finally ejected from the nozzle 29, which can generate a large number of bubbles. At the same time, the shaking power output structure is controlled to work, so as to adjust the injection range and stirring range of the stirring jet structure. Finally, the coal that meets the quality standards floats on the surface of the flotation box 2, and the coal that meets the standards is transported to the coal storage box 34 through the coal taking assembly.

[0038] See also Figure 1-Figure 8 As another preferred embodiment of the present application, the shaking power output structure includes a wave adjustment seat 19, a roller 21, a moving block 20 and a pulling arm 22. The wave adjustment seat 19 is arranged on the flotation box 2, and the moving block 20 is movably arranged on one side of the wave adjustment seat 19. The moving block 20 is movably provided with a roller 21, and the roller 21 and the surface of the wave adjustment seat 19 are slidably matched. The other end of the output shaft 26 is slidably inserted into the moving block 20, and the moving block 20 is elastically connected through an elastic member and a sleeve shaft 23. The pulling arm 22 is movably arranged on the wave adjustment seat 19, and the pulling arm 22 slides through the moving block 20 and the two are elastically connected.

[0039] It should be noted that the elastic member can be a spring 27, a spring sheet or an elastic steel plate structure. In the present embodiment, the elastic member is preferably a spring 27, and the spring 27 is connected between the moving block 20 and the sleeve shaft 23. As for the specific model parameters of the spring 27, the best choice can be made according to the actual situation, and they are not listed one by one here.

[0040] In the present embodiment, the coal taking assembly includes a drive motor 5, a drive shaft 12, a coal taking arm 6, a transmission structure and a cleaning module. The drive motor 5 is arranged on the flotation box 2, the drive shaft 12 is movably arranged on the flotation box 2, the coal taking arm 6 is sleeved on the outer wall of the drive shaft 12, the output end of the drive motor 5 is connected to the drive shaft 12, the transmission structure is arranged between the drive shaft 12 and the output shaft 26, and the position of the output shaft 26 and the sealing plate on the flotation box 2 is adjusted by the transmission structure when the drive shaft 12 rotates. A coal taking trough 7 is centrally symmetrically formed on the coal taking arm 6, and the cleaning module is arranged between the flotation box 2 and the coal taking trough 7 for cleaning the coal taking trough 7.

[0041] In actual application, by controlling the driving motor 5 to be powered on and rotated, the driving shaft 12 and the coal taking arm 6 are driven to rotate. When the coal taking arm 6 rotates, the coal floating on the surface of the flotation box 2 can be grabbed by the coal taking trough 7 and finally input into the coal storage box 34. In the process of the rotation of the driving shaft 12, the transmission structure can be driven to work. When the transmission structure works, the sealing plate and the output shaft 26 can be driven to reciprocate relative to the flotation box 2. In this process, the cleaning module can be controlled to work. When the cleaning module works, it can automatically clean the inner wall of the coal taking trough 7. When the output shaft 26 and the sealing plate reciprocate relative to the flotation box 2, the moving block 20 can be driven to move synchronously. Under the sliding cooperation between the roller 21 and the wave adjustment seat 19, the moving block 20 and the sleeve shaft 23 are driven to reciprocate relative to the output shaft 26, thereby realizing the adjustment of the stirring area position of the stirring blade 28 and the jet area position of the jet head 29, ensuring that there is no dead angle in the stirring and the jet is uniform.

[0042] See also Figure 1-Figure 8 As another preferred embodiment of the present application, the transmission structure includes a mounting platform 18, a half gear 13, a sliding plate 24 and two groups of teeth 25. The mounting platform 18 is arranged on the flotation box 2, the half gear 13 is arranged at one end of the drive shaft 12 away from the drive motor 5, the sliding plate 24 is movably arranged on the mounting platform 18, and the two groups of teeth 25 are symmetrically arranged on the inner wall of the sliding plate 24, one group of the teeth 25 is meshed with the half gear 13, and the sliding plate 24 is movably connected to the output shaft 26.

[0043] In a specific case of the present embodiment, the cleaning module includes a first side plate 9, a second side plate 14, a slider 10, a guide column 11 and a positioning structure. The bottom wall of the coal taking trough 7 is inclined. The first side plate 9 and the second side plate 14 are respectively arranged on both sides of the coal taking trough 7 and slide together. The slider 10 is movably arranged on the coal taking rotating arm 6. The guide column 11 is arranged on the slider 10. One end of the first side plate 9 is movably sleeved on the guide column 11 and the two are elastically connected. The second side plate 14 is connected to the slider 10. The positioning structure is arranged between the flotation box 2 and the slider 10. When the coal taking rotating arm 6 rotates, the position of the slider 10 on the coal taking rotating arm 6 is adjusted by the positioning structure.

[0044] In another specific case of the present embodiment, the positioning structure includes a positioning disk 8, a positioning groove 16 and a resistance rod 15, wherein the resistance rod 15 is arranged on the slider 10, the positioning disk 8 and the driving shaft 12 are concentrically arranged and arranged on the flotation box 2, the positioning groove 16 is arranged on the outer contour of the positioning disk 8, the positioning disk 8 is cam-shaped, and the positioning groove 16 and the resistance rod 15 are slidably matched.

[0045] It should be noted that a screening module is provided between the coal storage box 34 and the sliding plate 24 for performing secondary screening on the coal discharged from the coal taking chute 7. The screening module includes a filter plate 35 and a push arm 36. The filter plate 35 is movably provided on the coal storage box 34 and the two are elastically connected. One side of the filter plate 35 is movably connected to the sliding plate 24 through the push arm 36.

[0046] Of course, the present embodiment is not limited to the cooperation between the above-mentioned half gear 13 and the teeth 25 to adjust the position of the sliding plate 24, and a linear motor, electric cylinder or hydraulic cylinder may also be used instead, which are not listed here one by one.

[0047] In actual application, when the driving motor 5 controls the driving shaft 12 to rotate so as to realize the floating coal grabbing work, it can drive the half gear 13 to rotate synchronously. Under the meshing action between the half gear 13 and the tooth 25, it can drive the sliding plate 24 to reciprocate relative to the mounting platform 18, and then under the meshing action between the steering gear 31 and the rack 30, the output shaft 26 is driven. At the same time, in the process of the driving shaft 12 driving the coal taking arm 6 to rotate, the coal taking chute 7 can be used to input the floating coal into the coal storage box 34. In this process, the sliding cooperation between the abutment rod 15 and the adjustment groove 16 is used. When the coal taking arm 6 is in the set position (i.e., the coal taking arm 6 is rotated to the top of the coal storage box 34 and tilted downward), the slider 10, the first side plate 9 and the second side plate 14 can be driven to pop out from the coal taking chute 7. The blocking of the second side plate 14 can ensure the single coal taking amount of each coal taking chute 7, thereby improving the coal taking efficiency. In addition, the elastic action between the first side plate 9 and the guide column 11 can be utilized to move the first side plate 9 along the inclined bottom surface of the coal taking chute 7, thereby realizing the cleaning of the inner wall of the coal taking chute 7, eliminating the need for manual cleaning by the staff later and avoiding the situation where coal slag sticks to the surface of the coal taking arm 6.

[0048] A coal flotation method is applied to the flotation device described in the above embodiment, and the specific steps of the flotation method are as follows:

[0049] S100: Pour the raw coal and water into the flotation box 2 and mix them to form coal slurry. At the same time, the control center 4 controls the feeding box 3 to input the frother into the flotation box 2;

[0050] S200: By controlling the operation of the coal taking component, the operation of the coal taking component can control the operation of the stirring jet structure. When the stirring jet structure is operating, the foaming agent and the coal slurry can be stirred and mixed to facilitate the generation of bubbles in the coal slurry. At the same time, the stirring jet structure can generate a large number of bubbles and control the operation of the shaking power output structure to adjust the jet range and stirring range of the stirring jet structure.

[0051] S300: The coal that finally meets the quality standard floats on the surface of the flotation box 2, and the coal that meets the standard is transported to the coal storage box 34 through the operation of the coal taking assembly.

[0052] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

[0053] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coal flotation device, comprising a support, a flotation box, a coal storage box, a plurality of feeding boxes and a control center, wherein the flotation box and the coal storage box are both arranged on the support, a plurality of the feeding boxes are arranged on the flotation box and the feeding boxes are connected to the flotation box, the control center is arranged on the flotation box, and the coal storage box is arranged on one side of the flotation box through a connecting seat, characterized in that: The flotation device also includes a stirring and mixing component and a coal taking component. The stirring and mixing component is arranged on the flotation box and is used to mix and stir the coal slurry and the frother. The coal taking component is arranged on the flotation box and is used to input the coal floating on the surface of the flotation box into the coal storage box. The coal taking component is connected to the stirring and mixing component, and the coal taking component provides power for the stirring and mixing component when working. The stirring and mixing assembly includes a stirring jet structure, an air filter box, and a shaking power output structure. The stirring jet structure is arranged in the flotation box, and is used to perform a mixing process on the coal slurry and the foaming agent and generate bubbles in the flotation box. The stirring jet structure is connected to the coal taking assembly, and the coal taking assembly provides power for the stirring jet structure when working. The air filter box is arranged on one side of the flotation box, and the air filter box is connected to the stirring jet structure. The shaking power output structure is arranged in the flotation box and is connected to the stirring jet structure, and is used to adjust the stirring area position and the bubble generating area position of the stirring jet structure. The stirring jet structure includes a sealing plate, an output shaft, a sleeve shaft, stirring blades and a plurality of jet heads, the sealing plate slides through the flotation box, the output shaft is movably arranged on the sealing plate, the sleeve shaft is movably sleeved on the output shaft, an input hole formed at one end of the output shaft is connected to the air filter box, the number of the stirring blades is several and they are annularly distributed on the sleeve shaft, each stirring blade is equidistantly provided with a plurality of jet heads, a cavity is provided on the inner wall of the sleeve shaft, the cavity is connected to a through hole formed on the surface of the output shaft, a one-way valve is provided in both the input hole and the through hole, the output shaft is connected to a coal taking assembly, the shaking power output structure is provided on the flotation box and connected to an end of the sleeve shaft away from the air filter box, a sleeve plug is sleeved on the surface of the output shaft, and the sleeve plug is sealed and fitted with the inner wall of the cavity; The output shaft is sleeved with a steering gear, the bracket is provided with a rack, the rack is meshed with the steering gear, the output shaft is connected with the coal taking assembly, and the position of the output shaft and the sealing plate on the flotation box is adjusted when the coal taking assembly is working; The shaking power output structure includes a wave adjustment seat, a roller, a moving block and a pulling arm, wherein the wave adjustment seat is arranged on the flotation box, the moving block is movably arranged on one side of the wave adjustment seat, a roller is movably arranged on the moving block, the roller and the surface of the wave adjustment seat are slidably matched, the other end of the output shaft is slidably inserted on the moving block, the moving block is elastically connected through an elastic member and a sleeve shaft, the pulling arm is movably arranged on the wave adjustment seat, the pulling arm slides through the moving block and the two are elastically connected; The coal taking assembly includes a driving motor, a driving shaft, a coal taking rotating arm, a transmission structure and a cleaning module. The driving motor is arranged on the flotation box, the driving shaft is movably arranged on the flotation box, the coal taking rotating arm is sleeved on the outer wall of the driving shaft, the output end of the driving motor is connected to the driving shaft, the transmission structure is arranged between the driving shaft and the output shaft, and the position of the output shaft and the sealing plate on the flotation box is adjusted by the transmission structure when the driving shaft rotates. A coal taking trough is centrally symmetrically formed on the coal taking rotating arm, and the cleaning module is arranged between the flotation box and the coal taking trough for cleaning the coal taking trough; The transmission structure includes a mounting platform, a half gear, a sliding plate and two groups of teeth. The mounting platform is arranged on the flotation box, the half gear is arranged at one end of the driving shaft away from the driving motor, the sliding plate is movably arranged on the mounting platform, the two groups of teeth are symmetrically arranged on the inner wall of the sliding plate, one group of teeth is meshed with the half gear, and the sliding plate is movably connected to the output shaft.

2. The coal flotation device according to claim 1, characterized in that: The cleaning module includes a first side plate, a second side plate, a slider, a guide column and a positioning structure. The bottom wall of the coal trough is inclined. The first side plate and the second side plate are respectively arranged on both sides of the coal trough and slide together. The slider is movably arranged on the coal taking rotating arm. The guide column is arranged on the slider. One end of the first side plate is movably sleeved on the guide column and the two are elastically connected. The second side plate is connected to the slider. The positioning structure is arranged between the flotation box and the slider. When the coal taking rotating arm rotates, the position of the slider on the coal taking rotating arm is adjusted by the positioning structure.

3. The coal flotation device according to claim 2, characterized in that: The positioning structure includes a positioning disk, a positioning groove and a resistance rod, wherein the resistance rod is arranged on the slider, the positioning disk and the driving shaft are arranged concentrically and arranged on the flotation box, the positioning groove is arranged on the outer contour of the positioning disk, the positioning disk is cam-shaped, and the positioning groove and the resistance rod are slidably matched.

4. The coal flotation device according to claim 3, characterized in that: A screening module is arranged between the coal storage box and the sliding plate for performing secondary screening on the coal discharged from the coal chute. The screening module comprises a filter plate and a push arm. The filter plate is movably arranged on the coal storage box and the two are elastically connected. One side of the filter plate is movably connected to the sliding plate through the push arm.

5. A coal flotation method, applied to the flotation device according to claim 1, characterized in that: The specific steps of the flotation method are as follows: S100: Pour the coarse coal and water into the flotation box and mix them to form coal slurry. At the same time, the control center controls the feeding box to input the frother into the flotation box. S200: By controlling the operation of the coal taking component, the operation of the coal taking component can control the operation of the stirring jet structure. When the stirring jet structure is operating, the foaming agent and the coal slurry can be stirred and mixed to facilitate the generation of bubbles in the coal slurry. At the same time, the stirring jet structure can generate a large number of bubbles and control the operation of the shaking power output structure to adjust the jet range and stirring range of the stirring jet structure. S300: The coal that finally meets the quality standards floats on the surface of the flotation box, and the coal that meets the standards is transported to the coal storage box through the operation of the coal taking assembly.

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