Bubble generator for flotation machine

Abstract

The bubble generator for the flotation machine comprises a shell, a driving piece, a rotating shaft and a slurry conveying assembly, the shell is provided with an inner cavity, an air inlet pipe and a first slurry inlet pipe, the air inlet pipe and the first slurry inlet pipe are communicated with the inner cavity, a first bottom plate is arranged at the bottom of the shell, and an outer impeller is arranged below the first bottom plate. The rotating shaft is movably arranged in the shell, the top end of the rotating shaft is in driving connection with the driving part, the bottom end of the rotating shaft is provided with a second bottom plate, an inner impeller is arranged above the second bottom plate and located on the inner side of the outer impeller, and the slurry conveying assembly is arranged on the outer side of the shell and comprises a fixing pipe, a connecting pipe and an adjusting mechanism; the fixing pipe is arranged on the shell and communicated with the inner cavity, one end of the connecting pipe is communicated with the fixing pipe, the other end of the connecting pipe is provided with a slurry inlet and arranged on the adjusting mechanism, and the adjusting mechanism is rotationally arranged on the shell. According to the bubble generator for the flotation machine, the problem that in the prior art, the operation efficiency is low can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flotation machine, more particularly, relates to a bubble generator for flotation machine. BACKGROUND

[0002] The flotation machine is a kind of equipment for ore dressing, mainly applied in mining field, by utilizing the difference of physical and chemical properties of mineral particle surface, especially the difference of wettability of mineral surface, to realize the separation of useful mineral and gangue mineral.

[0003] At present, the flotation machine mainly includes tank body, stirring device, bubble generator, bubble scraping device etc. Bubble generator can be divided into mechanical stirring type, aeration type etc. When bubble generator is set as mechanical stirring type, it is integrated with stirring device, that is, in the process of mixing ore pulp and reagent, air is inhaled and dispersed into bubbles by the rotation of mechanical stirring impeller.

[0004] At present, mechanical stirring type flotation machine has been put into use, the graphite flotation treatment process and device disclosed by prior art include grading flotation device, flotation machine and flotation column, the grading flotation device includes large scale flake sorting assembly and fine scale flake sorting assembly, the fine scale flake sorting assembly is arranged on one side of large scale flake sorting assembly, the middle part of fine scale flake sorting assembly is provided with slurry inlet, and the bottom part is provided with liquid outlet, one end of large scale flake sorting assembly is provided with liquid inlet, and the bottom part is provided with liquid outlet, the slurry inlet of fine scale flake sorting assembly is communicated to the liquid outlet of large scale flake sorting assembly, and the liquid outlet of fine scale flake sorting assembly is communicated to the liquid inlet of large scale flake sorting assembly.

[0005] As can be seen from the above, the stirring mechanism includes main shaft, inner fan blade and stirring motor, the main shaft is coaxially rotatably arranged in the mixing column, the upper and lower ends of the main shaft extend out of the mixing column and the bottom plate respectively, the stirring motor is fixedly arranged in the sorting tank and is in transmission connection with the upper end of the main shaft, a plurality of inner fan blades are circumferentially arranged on the section of the main shaft extending out of the bottom plate, and the inner fan blades are located inside the outer fan blades. Under the condition that the fan blade and the outer fan blade rotate relative to each other, the air on the surface of the ore pulp is continuously rolled into the interior of the ore pulp, at the same time, the rolled air is broken into tiny bubbles by the shearing and extruding action of the fan blade, and the tiny bubbles are uniformly dispersed in the ore pulp, so that the ore pulp and the bubbles are fully mixed.

[0006] Although the mechanical stirring type flotation machine can realize the manufacture of bubbles, it has some problems. For example, the position of the stirring mechanism is not adjustable, which means that it can only mix the gas with the ore pulp around it. A large amount of ore pulp is stored in the entire flotation tank, and the above mixing method is not conducive to efficient completion of mineral separation.

[0007] As can be seen from the above, the bubble generator for flotation machine in the prior art has the problem of low operation efficiency. UTILITY MODEL CONTENT

[0008] The utility model discloses a kind of bubble generators for flotation machines, to solve the problem of low operation efficiency of bubble generator for flotation machine in prior art.

[0009] To achieve the above object, according to one aspect of the utility model, a kind of bubble generators for flotation machines, bubble generator for flotation machine includes shell, driving part, rotating shaft and slurry conveying assembly, shell has inner cavity and with the air inlet pipe and first slurry inlet pipe of inner cavity communication, the bottom of shell is provided with first bottom plate, the lower side of first bottom plate is provided with outer impeller, rotating shaft is movably arranged in the inside of shell, the top end of rotating shaft is drivenly connected with driving part, the bottom end of rotating shaft has second bottom plate, the upper side of second bottom plate is provided with inner impeller, inner impeller is located the inside of outer impeller, slurry conveying assembly is set to the outside of shell, slurry conveying assembly includes fixed pipe, connecting pipe and adjusting mechanism, fixed pipe is set on shell and with the inner cavity communication, one end of connecting pipe is communicated with fixed pipe, the other end of connecting pipe has slurry inlet, and it is set on adjusting mechanism, adjusting mechanism is rotatably arranged on shell, adjusting mechanism drives slurry inlet to move along the circumference of shell.

[0010] Further, the adjusting mechanism includes a transmission structure and a driving structure, the transmission structure has a connection end connected with the top end of the connecting pipe, and the transmission structure further has a rotating end rotatably arranged on the outer side of the shell, the driving structure is rotatably connected with the rotating end, and the driving structure can drive the transmission structure to rotate.

[0011] Further, the transmission structure includes a first connecting piece, a second connecting piece, an elastic piece, and a limiting rod, the first end of the first connecting piece is connected with the top end of the connecting pipe to form the connection end, the second connecting piece is rotatably arranged on the shell away from the first end of the first connecting piece to form the rotating end, and is arranged along the height direction of the shell, the top end of the limiting rod is connected with the bottom surface of the end of the second connecting piece close to the first connecting piece, the bottom end of the limiting rod has a protruding structure, the second end of the first connecting piece is sleeved on the limiting rod, the elastic piece is arranged between the protruding structure and the second end of the first connecting piece, and the elastic piece provides elastic force for abutting against the first connecting piece.

[0012] Further, the second connecting piece includes a body part and a sleeve, the body part is connected with the limiting rod, the body part is fixedly connected with the outer peripheral surface of the sleeve, the sleeve is sleeved on the outside of the shell and rotatably matched with the shell, the sleeve includes two connecting arc plates which are detachably connected, and the driving structure is rotatably connected with the sleeve.

[0013] Further, the inner peripheral surface of the sleeve has an annular groove, the outer peripheral surface of the shell is provided with a ring groove, the annular groove and the ring groove cooperatively form a rotating space, and the adjusting mechanism further includes a roller, and the roller is arranged in the rotating space.

[0014] Further, the sleeve has a gear ring on the outer circumferential surface, the driving structure comprises a rotating shaft and a gear wheel arranged along the height direction of the shell, the shell has a square plate arranged above the sleeve, the rotating shaft is arranged on the square plate through a bearing, one end of the rotating shaft penetrates the square plate and is connected with the gear wheel, and the gear wheel is engaged with the gear ring.

[0015] Further, the driving structure further comprises a brake column and a brake plate, the brake column is arranged at the end of the rotating shaft away from the gear wheel, the brake plate is arranged on one side of the top of the square plate, the brake plate has a brake hole, at least a part of the brake column is arranged inside the brake hole, the brake plate has a plug rod, the top surface of the square plate has a plug hole, and the plug rod is inserted into the plug hole.

[0016] Further, the shell comprises a top pipe, a middle pipe and a bottom pipe arranged in communication, the top pipe is fixedly arranged with the square plate and is arranged above the middle pipe, the upper end of the middle pipe has a smaller diameter than the lower end, the bottom pipe is arranged below the middle pipe, the shell further comprises a splicing pipe arranged between the bottom pipe and the middle pipe along the height direction of the shell, the outer side of the middle pipe and the bottom pipe is arranged with an annular groove at the end close to each other, the upper and lower ends of the splicing pipe are arranged with annular end plates, the annular end plates are sleeved on the end of the middle pipe and the bottom pipe close to each other, and the inner side of the annular end plates is fixedly arranged with annular columns, and the annular columns are arranged in the annular grooves.

[0017] Further, the side wall of the splicing pipe is arranged with a through hole, and the bubble generator for the flotation machine further comprises an inclined guide pipe, a third bottom plate, a fourth bottom plate, a central shaft, a chain wheel and a chain, the inclined guide pipe is arranged at the through hole, one end of the inclined guide pipe is communicated with the inner cavity, the third bottom plate is arranged on the outer side of the shell, the third bottom plate is arranged with a mounting hole, the other end of the inclined guide pipe is arranged at the mounting hole, the bottom surface of the third bottom plate is arranged with a first impeller, the fourth bottom plate is arranged on the lower side of the third bottom plate, the third bottom plate and the fourth bottom plate are connected through a support, the top surface of the fourth bottom plate is arranged with a second impeller arranged inside the first impeller, the central shaft is arranged along the height direction of the shell, the top end of the central shaft is connected with the fourth bottom plate, the support is sleeved on the central shaft through a bearing, the bottom end of the central shaft and the rotating shaft are arranged with chain wheels, and the two chain wheels are connected through a chain.

[0018] Further, the bubble generator for the flotation machine further comprises a transmission mechanism arranged inside the splicing pipe, the transmission mechanism comprises an outer ring plate, a driving ring plate, a transmission ring plate and a connecting bracket, the outer ring plate is fixedly arranged on the splicing pipe, the driving ring plate is sleeved on the rotating shaft and arranged inside the outer ring plate, the transmission ring plate is arranged between the outer ring plate and the driving ring plate, the connecting bracket is arranged on the middle pipe or the bottom pipe, the transmission ring plate is arranged on the connecting bracket, and the contact surfaces of the outer ring plate, the driving ring plate and the transmission ring plate are engaged through driving columns and driving grooves.

[0019] The technical scheme of the utility model discloses a bubble generator for a flotation machine, which comprises a shell, a driving member, a rotating shaft and a pulp conveying assembly, the shell has an inner cavity, an air inlet pipe and a first pulp inlet pipe which are in communication with the inner cavity, a first bottom plate is arranged at the bottom of the shell, an outer impeller is arranged below the first bottom plate, the rotating shaft is movably arranged in the shell, the top end of the rotating shaft is drivingly connected with the driving member, the bottom end of the rotating shaft has a second bottom plate, an inner impeller is arranged above the second bottom plate, the inner impeller is located on the inner side of the outer impeller, the pulp conveying assembly is arranged on the outer side of the shell, the pulp conveying assembly comprises a fixed pipe, a connecting pipe and an adjusting mechanism, the fixed pipe is arranged on the shell and is in communication with the inner cavity, one end of the connecting pipe is in communication with the fixed pipe, the other end of the connecting pipe has a pulp inlet opening and is arranged on the adjusting mechanism, and the adjusting mechanism is rotatably arranged on the shell and drives the pulp inlet opening to move along the circumference of the shell.

[0020] As can be seen from the above, the bubble generator for the flotation machine is provided with the pulp conveying assembly, the connecting pipe and the fixed pipe of the pulp conveying assembly form a channel for conveying slurry, and the top of the connecting pipe can be moved to other positions, so that after the position of the top of the connecting pipe is adjusted, the slurry at other positions can be conveyed into the shell, the mode of driving the slurry to move by the rotation of the impeller is changed, and the mixing efficiency of the slurry and the gas is improved.

[0021] The bubble generator for the flotation machine adopts the cooperation of the inner impeller and the outer impeller, the first impeller and the second impeller to realize the stirring of the gas and the slurry, the air is broken into tiny bubbles under the action of the impeller, and the bubbles are uniformly dispersed in the ore slurry, the ore slurry and the bubbles are fully mixed, and the mixing efficiency of the slurry and the gas is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application, and do not limit the present application in any manner. In the drawings:

[0023] Figure 1 is a structural schematic view of the shell, the first bottom plate, the third bottom plate and the pulp conveying assembly provided by the utility model;

[0024] Figure 2 is a structural schematic view of the shell provided by the utility model;

[0025] Figure 3 is a structural schematic view of the middle pipe and the bottom pipe provided by the utility model;

[0026] Figure 4 is a structural schematic view of the first bottom plate, the rotating shaft and the second bottom plate provided by the utility model;

[0027] Figure 5 is a three-dimensional structural schematic view of the pulp conveying assembly provided by the utility model;

[0028] Figure 6 is an exploded view of the pulp conveying assembly provided by the utility model;

[0029] Figure 7 is a structural schematic view of the third bottom plate and the spliced pipe provided by the utility model;

[0030] Figure 8 is a structural schematic view of the third bottom plate and the fourth bottom plate provided by the utility model;

[0031] Figure 9 is a three-dimensional structural schematic view of the spliced pipe provided by the utility model;

[0032] Figure 10 is a structural schematic view of the transmission mechanism provided by the utility model.

[0033] Among them, the above-mentioned drawings include the following reference signs:

[0034] 20, shell; 210, top pipe; 211, ring groove; 220, middle pipe; 230, bottom pipe; 240, air inlet pipe; 250, first pulp inlet pipe; 260, square plate; 270, first bottom plate; 271, outer impeller; 272, first air hole; 280, annular groove; 290, second bottom plate; 291, inner impeller; 310, pulley; 40, pulp conveying assembly; 410, fixed pipe; 420, connecting pipe; 430, first connecting piece; 440, second connecting piece; 441, body part; 442, sleeve; 4421, annular groove; 450, driving structure; 451, gear; 452, rotating shaft; 4521, brake column; 453, brake plate; 4531, brake hole; 4532, insertion rod; 460, limiting rod; 461, protruding structure; 470, elastic piece; 480, gear ring; 490, roller; 50, spliced pipe; 501, through hole; 510, annular end plate; 520, annular column; 60, inclined guide pipe; 710, third bottom plate; 711, first impeller; 720, support; 730, fourth bottom plate; 731, second impeller; 740, center shaft; 750, sprocket; 80, rotating shaft; 90, transmission mechanism; 910, outer ring plate; 920, transmission ring plate; 930, driving ring plate; 940, connecting support. DETAILED DESCRIPTION

[0035] It should be noted that the embodiments and the features in the embodiments in the present application can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0036] It should be noted that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meaning as that generally understood by the ordinary skilled person in the technical field to which the present application belongs.

[0037] In the utility model, in the case where no contrary illustration is made, the orientation words such as '' upper, lower, top, bottom '' used are usually directed to the direction shown in the drawing or directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, '' inner, outer '' refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the utility model.

[0038] In order to solve the problem of low operation efficiency of the existing bubble generator for a flotation machine, the application provides a bubble generator for a flotation machine.

[0039] The bubble generator for a flotation machine is used with the flotation machine, and the flotation machine comprises a flotation bin and a second pulp inlet pipe communicated with the flotation bin; the bubble generator for a flotation machine is used to realize the mixing of the pulp and the gas in the flotation bin of the flotation machine quickly.

[0040] In the embodiment, the flotation machine further comprises a scraper arranged at the top opening of the flotation bin, and the scraper can rotate around the shaft to scrape the foam layer at the top opening of the flotation bin.

[0041] As shown in Figures 1 to 10 The bubble generator for a flotation machine comprises a shell 20, a driving member, a rotating shaft 80 and a pulp conveying assembly 40, the pulp conveying assembly 40 is arranged outside the shell 20, and the driving member is arranged on the flotation bin.

[0042] The shell 20 is vertically arranged in the flotation groove of the flotation bin, and the shell 20 comprises a top pipe 210, a middle pipe 220 and a bottom pipe 230 which are arranged in communication along the height direction; a square plate 260 is fixedly arranged on the top pipe 210, the square plate 260 is fixed above the middle pipe 220, and the square plate 260 is mounted on the cross beam at the top of the flotation bin through bolts; the middle pipe 220 is arranged below the top pipe 210 through a flange plate, and the upper end of the middle pipe 220 has a smaller diameter than the lower end; this arrangement provides a channel for the gas and the slurry to enter the shell 20; and the bottom pipe 230 is arranged below the middle pipe 220.

[0043] In the embodiment, the shell 20 has an inner cavity, an air inlet pipe 240 and a first pulp inlet pipe 250 which are communicated with the inner cavity; the top of the air inlet pipe 240 protrudes into the slurry; and the first pulp inlet pipe 250 is connected with the second pulp inlet pipe on the flotation bin; therefore, the gas and the slurry can flow into the shell 20 through the air inlet pipe 240 and the pulp inlet pipe, which facilitates the mutual mixing of the gas and the slurry and the generation of bubbles floating to the surface of the slurry.

[0044] The air inlet pipe 240 and the first pulp inlet pipe 250 are both arranged in communication with the middle pipe 220, and the air inlet pipe 240 is arranged above the first pulp inlet pipe 250.

[0045] Specifically, the bottom of the housing 20 is provided with a first base plate 270, and an outer impeller 271 is provided below the first base plate 270. The first base plate 270 also has a first air hole 272 for air bubbles to pass through. The rotating shaft 80 is movably disposed inside the housing 20. The top end of the rotating shaft 80 is drivenly connected to the driving component. The bottom end of the rotating shaft 80 is provided with a second base plate 290. An inner impeller 291 is provided above the second base plate 290. The first base plate 270 and the second base plate 290 are disc-shaped structures. Multiple inner impellers 291 are equally spaced along the circumference of the second base plate 290. The inner impellers 291 are located inside the outer impellers 271. Multiple outer impellers 271 are equally spaced along the circumference of the first base plate 270.

[0046] The driving component is a motor, which is connected to the rotating shaft 80 via a pulley 310. When the driving component is working, it drives the inner impeller 291 to rotate at high speed in the flotation cell. A stirring zone is formed between the inner impeller 291 and the outer impeller 271. The shape and structure design of the impeller causes the slurry to generate strong turbulence and vortex in the stirring zone, which in turn continuously draws air from the surface of the slurry into the slurry. At the same time, through the shearing and squeezing action of the impeller, the drawn-in air is broken into tiny bubbles and evenly dispersed in the slurry, so as to achieve full mixing of the slurry and the bubbles.

[0047] The bubble generator for flotation machines in this application uses the cooperation of an inner impeller 291 and an outer impeller 271 to agitate the gas and slurry. Under the action of the impeller, the entrained air is broken into tiny bubbles and evenly dispersed in the slurry, so as to achieve full mixing of slurry and bubbles and further improve the mixing efficiency of slurry and gas.

[0048] like Figure 1 , Figure 5 and Figure 6 As shown, in order to transport the coarse slurry from other locations inside the flotation chamber to the stirring area and mix it with gas to form bubbles, the slurry conveying assembly 40 includes a fixed pipe 410, a connecting pipe 420, and an adjusting mechanism. The fixed pipe 410 is disposed on the housing 20 and communicates with the inner cavity. One end of the connecting pipe 420 is connected to the fixed pipe 410, and the other end of the connecting pipe 420 has a slurry inlet and is disposed on the adjusting mechanism. The adjusting mechanism is rotatably disposed on the housing 20 and drives the slurry inlet to move circumferentially along the housing 20.

[0049] One end of the connecting pipe 420 is fixedly connected to the fixed pipe 410. The connecting pipe 420 can undergo elastic deformation. The other end of the connecting pipe 420 moves with the adjusting mechanism. The adjusting mechanism supports the connecting pipe 420. The movement of the adjusting mechanism drives the other end of the connecting pipe 420 to different areas of the slurry, so that the slurry in different areas flows into the inner cavity through the connecting pipe 420 and the fixed pipe 410, and then flows to the stirring area.

[0050] Specifically, the flotation machine of the present application is provided with a pulp feeding assembly 40, the connecting pipe 420 and the fixed pipe 410 of the pulp feeding assembly 40 form a pulp conveying channel, and the top of the connecting pipe 420 can be moved to other positions, so that after the position of the top of the connecting pipe 420 is adjusted, the pulp in other positions can be conveyed into the shell 20, the way of moving the pulp driven by the rotation of the impeller is changed, and the mixing efficiency of the pulp and the gas is improved.

[0051] As shown in Figure 5 and Figure 6 , the adjusting mechanism includes a transmission structure and a driving structure 450, the transmission structure has a connecting end connected with the top end of the connecting pipe 420, and the transmission structure also has a rotating end arranged on the outer side surface of the shell 20, the driving structure 450 is rotationally connected with the rotating end, and the driving structure 450 can drive the transmission structure to rotate.

[0052] Among them, the driving structure 450 and the transmission structure drive cooperatively, so that the end of the connecting pipe 420 can be moved in position through the transmission structure by operating the driving structure 450, which is convenient to operate.

[0053] Specifically, the transmission structure includes a first connecting piece 430, a second connecting piece 440, an elastic piece 470 and a limiting rod 460, the first end of the first connecting piece 430 is connected with the top end of the connecting pipe 420 to form the connecting end, the end of the second connecting piece 440 away from the first connecting piece 430 is rotationally arranged on the shell 20 to form the rotating end, and the second connecting piece 440 is arranged along the height direction of the shell 20, the top end of the limiting rod 460 is connected with the bottom surface of the end of the second connecting piece 440 close to the first connecting piece 430, the bottom end of the limiting rod 460 has a protruding structure 461, the second end of the first connecting piece 430 is sleeved on the limiting rod 460, the elastic piece 470 is arranged between the protruding structure 461 and the second end of the first connecting piece 430, and the elastic piece 470 provides elastic force for abutting against the first connecting piece 430.

[0054] Among them, the elastic piece 470 is a spring, the spring is in a compressed state, the spring is sleeved on the limiting rod 460, one end of the spring abuts against the protruding structure 461, and the other end of the spring abuts against the bottom surface of the first connecting piece 430. Under the action of the spring, the first connecting piece 430 always has a tendency to move upward, and the first connecting piece 430 provides support for forming a pulp flow passage of the connecting pipe 420. In addition, because the spring is deformable, the movement of the top of the connecting pipe 420 is facilitated under the movement of the second connecting piece 440.

[0055] In the embodiment, the second connecting piece 440 comprises a body part 441 connected with the limiting rod 460 and a sleeve 442 fixedly connected with the outer circumferential surface of the body part 441, the sleeve 442 is sleeved outside the shell 20 and rotationally matched with the shell 20, and the sleeve 442 comprises two detachably connected connecting arc plates, and the driving structure 450 is rotationally connected with the sleeve 442.

[0056] One of the two connecting arc plates is fixedly connected with the second connecting piece 440, which is beneficial to improving the structural strength, and the other one of the two connecting arc plates is fixedly connected by a fastener such as a bolt and is sleeved outside the shell 20.

[0057] The two connecting arc plates are detachably arranged, which facilitates the disassembly and assembly of the sleeve 442 and the shell 20, thereby improving the installation efficiency.

[0058] As shown in Figs. Figure 5 and Figure 6 The inner circumferential surface of the sleeve 442 is provided with an annular groove 4421, and the shell 20 is provided with an annular groove 211, the annular groove 4421 and the annular groove 211 cooperatively form a rotation space, and the adjusting mechanism further comprises a roller 490 arranged in the rotation space.

[0059] The annular groove 211 is arranged on the outer circumferential surface of the top pipe 210.

[0060] Under the action of the roller 490, the connecting arc plate and the shell 20 are stably connected, and the rotation of the connecting arc plate relative to the shell 20 is facilitated.

[0061] In order to drive the sleeve 442 to rotate and thereby adjust the position of the second connecting piece 440, the outer circumferential surface of the sleeve 442 is provided with a gear ring 480, the driving structure 450 comprises a rotating shaft 452 and a gear 451, the rotating shaft 452 is arranged along the height direction of the shell 20, the shell 20 is provided with a square plate 260 arranged above the sleeve 442, the rotating shaft 452 is arranged in the square plate 260 through a bearing, one end of the rotating shaft 452 penetrates through the square plate 260 and is connected with the gear 451, the gear 451 is engaged with the gear ring 480, the rotation of the gear 451 can be controlled by rotating the rotating shaft 452, thereby controlling the rotation of the sleeve 442, and the adjustment of the position of the second connecting piece 440 is realized.

[0062] In this embodiment, to keep the second connecting member 440 stationary after adjustment, the drive structure 450 further includes a brake pin 4521 and a brake plate 453. The brake pin 4521 is located at the end of the rotating shaft 452 away from the gear 451, and the brake plate 453 is located on the top side of the square plate 260. The brake plate 453 has a brake hole 4531, at least a portion of the brake pin 4521 is located inside the brake hole 4531, and the brake plate 453 has a rod 4532. The top surface of the square plate 260 has a hole, and the rod 4532 is inserted into the hole. Since the square plate 260 has multiple holes, the rod 4532 is inserted into one of them. Therefore, after the brake plate 453 is fitted onto the brake pin 4521, the rod 4532 can be inserted into the hole, allowing the brake plate 453 to be stationary relative to the square plate 260, thereby restricting the rotation of the rotating shaft 452 and forcing the second connecting member 440 and the connecting pipe 420 to be stably positioned after adjustment.

[0063] like Figure 3 , Figures 7 to 9 As shown, along the height direction of the housing 20, the housing 20 also includes a splicing pipe 50 disposed between the bottom pipe 230 and the middle pipe 220.

[0064] In one specific embodiment of this example, annular grooves 280 are provided at the ends of the outer surfaces of the middle tube 220 and the bottom tube 230 that are close to each other. Annular end plates 510 are provided at both the upper and lower ends of the splicing tube 50. The annular end plates 510 are sleeved on the ends of the middle tube 220 and the bottom tube 230 that are close to each other. Annular columns 520 are fixedly provided on the inner side of the annular end plates 510. The annular columns 520 are provided in the annular grooves 280 to facilitate the rotation of the splicing tube 50 around the rotating shaft 80.

[0065] In this application, the splicing pipe 50 adopts a rotatable structure of annular column 520 and annular groove 280 to facilitate position adjustment; at the same time, the structure of annular column 520 and annular groove 280 is conducive to improving the stability of both structures.

[0066] In another specific embodiment of this example, the end of the splicing pipe 50 is connected to the bottom pipe 230 and the middle pipe 220 by a sealed bearing.

[0067] In this embodiment, a through hole 501 is provided on the side wall of the splicing pipe 50. The bubble generator for the flotation machine also includes an inclined guide pipe 60, a third bottom plate 710, a fourth bottom plate 730, a central shaft 740, a sprocket 750, and a chain. The inclined guide pipe 60 is disposed at the through hole 501, and one end of the inclined guide pipe 60 communicates with the inner cavity. The third bottom plate 710 is disposed on the outside of the housing 20. The third bottom plate 710 has a mounting hole and a second air hole for the bubbles to pass through. The other end of the inclined guide pipe 60 is disposed at the mounting hole. A first impeller 7 is provided on the bottom surface of the third bottom plate 710. 11. The fourth base plate 730 is located below the third base plate 710. The third base plate 710 and the fourth base plate 730 are connected by a bracket 720. The top surface of the fourth base plate 730 has a second impeller 731 located inside the first impeller 711. The central shaft 740 is arranged along the height direction of the housing 20. The top end of the central shaft 740 is connected to the fourth base plate 730. The bracket 720 is sleeved on the central shaft 740 through a bearing. The bottom end of the central shaft 740 and the rotating shaft 80 are both provided with sprockets 750. The two sprockets 750 are connected by a chain.

[0068] Among them, such as Figure 4 As shown, the third base plate 710 and the fourth base plate 730 are disc-shaped structures. Multiple first impellers 711 are provided and are spaced apart along the circumference of the third base plate 710. Multiple second impellers 731 are provided and are spaced apart along the circumference of the fourth base plate 730. The second impellers 731 can rotate inside the first impellers 711.

[0069] In order to mix the slurry and gas at the third base plate 710, this application provides a fourth base plate 730 connected to the third base plate 710 via a support 720. The central shaft 740 of the fourth base plate 730 is connected through the support 720 via a bearing. Sprockets 750 are provided at the bottom of both the central shaft 740 and the bottom of the rotating shaft 80, and the two sprockets 750 are connected by a chain. Therefore, the rotation of the fourth base plate 730 can be controlled when the rotating shaft 80 rotates. Because a second impeller 731 and a first impeller 711 are respectively provided on the sidewalls of the fourth base plate 730 and the third base plate 710 that are close to each other, strong turbulence and vortices are generated in the mixing area when the impellers rotate at high speed. This continuously draws air from the surface of the slurry into the slurry. Simultaneously, through the shearing and squeezing action of the impellers, the drawn-in air is broken into tiny bubbles and evenly dispersed in the slurry, achieving thorough mixing of the slurry and bubbles.

[0070] like Figure 7 and Figure 10As shown, the bubble generator for the flotation machine further comprises a transmission mechanism 90 arranged inside the spliced pipe 50, the transmission mechanism 90 comprises an outer ring plate 910, a driving ring plate 930, a transmission ring plate 920 and a connecting frame 940, the outer ring plate 910 is fixedly arranged on the spliced pipe 50, the driving ring plate 930 is sleeved on the rotating shaft 80 and arranged inside the outer ring plate 910, the transmission ring plate 920 is arranged between the outer ring plate 910 and the driving ring plate 930, the connecting frame 940 is arranged on the middle pipe 220 or the bottom pipe 230, the transmission ring plate 920 is installed on the connecting frame 940, and the contact surfaces of the outer ring plate 910, the driving ring plate 930 and the transmission ring plate 920 are engaged through driving columns and driving grooves.

[0071] In order to slow down the adjustment of the position of the third bottom plate 710, a small number of driving columns and driving grooves are arranged on the contact surfaces of the outer ring plate 910, the driving ring plate 930 and the transmission ring plate 920, and the specific number is determined according to the actual situation. Under the cooperation of the driving columns and the driving grooves, the third bottom plate 710 can move a small distance when the driving ring plate 930 rotates one circle.

[0072] In the embodiment, the inner circumferential surface of the outer ring plate 910 is provided with driving grooves, the outer circumferential surface of the driving ring plate 930 is provided with driving grooves, and the outer circumferential surface of the transmission ring plate 920 is provided with driving columns; or the inner circumferential surface of the outer ring plate 910 is provided with driving columns, the outer circumferential surface of the driving ring plate 930 is provided with driving columns, and the outer circumferential surface of the transmission ring plate 920 is provided with driving grooves.

[0073] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0074] The bubble generator for the flotation machine of the application is provided with the slurry conveying assembly 40, the connecting pipe 420 and the fixed pipe 410 of the slurry conveying assembly 40 form a slurry conveying channel, and the top of the connecting pipe 420 can be moved to other positions, so that after the position of the top of the connecting pipe 420 is adjusted, the slurry at other positions can be conveyed into the shell 20, the mode of driving the slurry to move by the rotation of the impeller is changed, and the mixing efficiency of the slurry and the gas is improved.

[0075] The bubble generator for the flotation machine of the application adopts the cooperation of the inner impeller 291 and the outer impeller 271, the first impeller 711 and the second impeller 731 to realize the stirring of the gas and the slurry, the air entrained is broken into tiny bubbles under the action of the impeller, and the tiny bubbles are uniformly dispersed in the ore slurry, the ore slurry and the bubbles are fully mixed, and the mixing efficiency of the slurry and the gas is further improved.

[0076] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0077] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0078] It should be noted that the terms "first", "second", and the like, used in the specification and the claims of the application and the above-described drawings, are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein.

[0079] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bubble generator for a flotation machine, characterized in that The utility model relates to a slurry pump, which comprises: a shell (20) having an inner cavity, an air inlet pipe (240) and a first slurry inlet pipe (250) communicating with the inner cavity, a first bottom plate (270) arranged at the bottom of the shell (20), and an outer impeller (271) arranged below the first bottom plate (270); a driving member; a rotating shaft (80) movably arranged inside the shell (20), a top end of the rotating shaft (80) being drivingly connected with the driving member, and a bottom end of the rotating shaft (80) having a second bottom plate (290), an inner impeller (291) being arranged above the second bottom plate (290) and located inside the outer impeller (271); a slurry conveying assembly (40) arranged outside the shell (20), the slurry conveying assembly (40) comprising a fixed pipe (410), a connecting pipe (420) and an adjusting mechanism, the fixed pipe (410) being arranged on the shell (20) and communicating with the inner cavity, one end of the connecting pipe (420) communicating with the fixed pipe (410), the other end of the connecting pipe (420) having a slurry inlet opening and being arranged on the adjusting mechanism, and the adjusting mechanism being rotatably arranged on the shell (20) and driving the slurry inlet opening to move along the circumference of the shell (20).

2. A bubble generator for a flotation machine according to claim 1, characterized in that The adjusting mechanism comprises: a transmission structure having a connecting end connected with the top end of the connecting pipe (420) and a rotating end rotatably arranged on the outer side of the shell (20); a driving structure (450) rotatably connected with the rotating end and capable of driving the transmission structure to rotate.

3. A bubble generator for a flotation machine according to claim 2, characterised in that The transmission structure comprises: a first connecting member (430) having a first end connected with the top end of the connecting pipe (420) to form the connecting end; a second connecting member (440) having one end away from the first connecting member (430) rotatably arranged on the shell (20) to form the rotating end; a limiting rod (460) arranged along the height direction of the shell (20), a top end of the limiting rod (460) being connected with the bottom surface of the end of the second connecting member (440) close to the first connecting member (430), and a bottom end of the limiting rod (460) having a protruding structure (461), the second end of the first connecting member (430) being sleeved on the limiting rod (460); a resilient member (470) arranged between the protruding structure (461) and the second end of the first connecting member (430) and providing elastic force for abutting against the first connecting member (430).

4. A bubble generator for a flotation machine according to claim 3, characterised in that The second connecting member (440) comprises: a body portion (441) connected with the limiting rod (460); A sleeve (442) is fixedly connected with the outer peripheral surface of the body part (441), is sleeved on the outside of the shell (20), and is rotationally matched with the shell (20). The sleeve (442) comprises two detachably connected connecting arc plates, and the driving structure (450) is rotationally connected with the sleeve (442).

5. A bubble generator for a flotation machine according to claim 4, characterised in that An annular groove (4421) is arranged on the inner peripheral surface of the sleeve (442), and an annular groove (211) is arranged on the outer peripheral surface of the shell (20). The annular groove (4421) and the annular groove (211) cooperatively form a rotation space. The adjusting mechanism further comprises a roller (490) arranged in the rotation space.

6. A bubble generator for a flotation machine according to claim 4, characterised in that An outer peripheral surface of the sleeve (442) is provided with a gear ring (480), and the driving structure (450) comprises: A rotating shaft (452) is arranged along the height direction of the shell (20). The shell (20) is provided with a square plate (260) arranged above the sleeve (442). The rotating shaft (452) is arranged in the square plate (260) through a bearing. A gear (451) is connected with the rotating shaft (452) at one end of the rotating shaft (452) penetrating through the square plate (260). The gear (451) is meshed with the gear ring (480).

7. A bubble generator for a flotation machine according to claim 6, characterised in that The driving structure (450) further comprises: A brake column (4521) is arranged at one end of the rotating shaft (452) away from the gear (451). A brake plate (453) is arranged on one side of the top of the square plate (260). The brake plate (453) is provided with a brake hole (4531). At least a part of the brake column (4521) is arranged in the brake hole (4531). The brake plate (453) is provided with a plug rod (4532). The top surface of the square plate (260) is provided with a plug hole. The plug rod (4532) is inserted into the plug hole.

8. The bubble generator for a flotation machine according to any one of claims 1 to 7, characterized in that, The shell (20) comprises a communication arrangement of a top pipe (210), a middle pipe (220), and a bottom pipe (230). The square plate (260) is fixedly arranged on the top pipe (210) and is arranged above the middle pipe (220). The upper end of the middle pipe (220) has a smaller diameter than the lower end. The bottom pipe (230) is arranged below the middle pipe (220). The shell (20) further comprises a splicing pipe (50) arranged between the bottom pipe (230) and the middle pipe (220) along the height direction of the shell (20). The outer side surfaces of the middle pipe (220) and the bottom pipe (230) are provided with annular grooves (280) at the ends close to each other. The upper and lower ends of the splicing pipe (50) are provided with annular end plates (510). The annular end plates (510) are sleeved on the ends of the middle pipe (220) and the bottom pipe (230) close to each other. The inner sides of the annular end plates (510) are fixedly provided with annular columns (520). The annular columns (520) are arranged in the annular grooves (280).

9. A bubble generator for a flotation machine according to claim 8, characterised in that The side wall of the spliced pipe (50) is provided with a through hole (501), and the bubble generator for the flotation machine further comprises: An inclined guide pipe (60) is arranged at the through hole (501), one end of the inclined guide pipe (60) communicates with the inner cavity; A third bottom plate (710) is arranged on the outer side of the shell (20), the third bottom plate (710) has a mounting hole, the other end of the inclined guide pipe (60) is arranged at the mounting hole, and the bottom surface of the third bottom plate (710) is provided with a first impeller (711); A fourth bottom plate (730) is arranged on the lower side of the third bottom plate (710), the third bottom plate (710) and the fourth bottom plate (730) are connected through a support (720), and the top surface of the fourth bottom plate (730) is provided with a second impeller (731) arranged in the interior of the first impeller (711); A central shaft (740) is arranged along the height direction of the shell (20), the top end of the central shaft (740) is connected with the fourth bottom plate (730), and the support (720) is sleeved on the central shaft (740) through a bearing; A sprocket (750) and a chain, the bottom end of the central shaft (740) and the rotating shaft (80) are both provided with the sprocket (750), and the two sprockets (750) are connected through the chain.

10. A bubble generator for a flotation machine according to claim 8, characterized in that The bubble generator for the flotation machine further comprises a transmission mechanism (90) arranged in the interior of the spliced pipe (50), and the transmission mechanism (90) comprises: An outer ring plate (910) is fixedly arranged on the spliced pipe (50); An active ring plate (930) is sleeved on the rotating shaft (80) and arranged in the interior of the outer ring plate (910); A transmission ring plate (920) is arranged between the outer ring plate (910) and the active ring plate (930); A connecting support (940) is arranged on the middle pipe (220) or the bottom pipe (230), the transmission ring plate (920) is mounted on the connecting support (940), and the contact surfaces of the outer ring plate (910), the active ring plate (930) and the transmission ring plate (920) are engaged through belt driving columns and belt driving grooves.

Images