CN211463522U - Cavitation jet microbubble flotation machine and cavitation jet bubble generator - Google Patents
Cavitation jet microbubble flotation machine and cavitation jet bubble generator Download PDFInfo
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- CN211463522U CN211463522U CN201921822650.9U CN201921822650U CN211463522U CN 211463522 U CN211463522 U CN 211463522U CN 201921822650 U CN201921822650 U CN 201921822650U CN 211463522 U CN211463522 U CN 211463522U
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- 238000005188 flotation Methods 0.000 title claims abstract description 64
- 238000005273 aeration Methods 0.000 claims abstract description 27
- 239000012141 concentrate Substances 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000006260 foam Substances 0.000 claims description 18
- 230000033558 biomineral tissue development Effects 0.000 abstract description 30
- 239000002245 particle Substances 0.000 abstract description 26
- 238000000926 separation method Methods 0.000 abstract description 15
- 239000010419 fine particle Substances 0.000 abstract description 9
- 239000003245 coal Substances 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 5
- 230000002209 hydrophobic effect Effects 0.000 abstract description 4
- 239000008187 granular material Substances 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 11
- 238000010907 mechanical stirring Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 101150114468 TUB1 gene Proteins 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009291 froth flotation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000003250 coal slurry Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of coal slime flotation device, a cavitation jet microbubble flotation machine and a cavitation jet bubble generator are disclosed, which comprises an intensive type feeding aeration tank, an upper tank body and a lower tank body, wherein a middle partition plate is arranged in the intensive type feeding aeration tank, a plurality of ore pulp distribution ports and a plurality of air distribution ports are respectively arranged on the side wall above and below the middle partition plate, and the plurality of bubble generators are connected with the intensive type feeding aeration tank through the ore pulp distribution ports and the air distribution ports; an inner barrel is arranged in the lower barrel body, a rectifying grating is arranged on the upper surface of the inner barrel, and a discharge hole below the bubble generator penetrates through the rectifying grating and then is arranged in the inner barrel; and a concentrate overflow trough is arranged on the periphery of the upper barrel body. The utility model discloses can generate the air pocket and generate conventional flotation bubble simultaneously at hydrophobic particle surface normal position, realize the isolation of granule bubble mineralization and mineralize mineralization bubble separation, make the rate of recovery and the selectivity of micro-fine particle flotation obtain improving in step.
Description
Technical Field
The utility model belongs to the technical field of coal slime flotation device, concretely relates to cavitation jet microbubble flotation device and cavitation jet bubble generator.
Background
The froth flotation is a general method for separating minerals from micro-fine particle ore pulp, and the flotation machine utilizing the froth flotation comprises a mechanical stirring type flotation machine, a jet type flotation machine and flotation columns, wherein the mechanical stirring type flotation machine crushes bubbles to generate foams by means of the cutting action of a stirring impeller, the size of the foams is larger and is about 1-3 mm, the mineralization mode of particles and the bubbles is mainly collision mineralization, the collision mineralization efficiency of the micro-fine particles is low, and the selectivity is poor; the jet type flotation machine sucks air by utilizing the principle that the pulp is jetted to generate negative pressure, and inflates the pulp to generate foam for flotation separation, because the pulp of the flotation machine generates negative pressure when being jetted, the dissolved gas in the pulp can be separated out in a micro-bubble form when the air is sucked, and the micro-fine particle flotation process is strengthened, so the jet type flotation machine is widely applied to the field of micro-fine particle coal and mineral flotation, and is considered as an alternative technical device of a mechanical stirring type flotation machine, the representative machine type of the jet type flotation machine is the jet type flotation machine disclosed by the Chinese utility model patent 92229333.3, the jet type stirring device for the flotation machine replaces the traditional mechanical stirring device, and the separation effect of the micro-fine particle coal is improved.
Although the particle size of the generated bubbles of the jet flotation machine is smaller than that of the mechanical stirring flotation machine, the gas-liquid interface area for the contact of the particle bubbles is increased under the condition of a certain aeration quantity, and further the collision mineralization probability of the particle bubbles is increased to a certain extent, for fine ore particles, because the inertia of the ore particles is small, the collision mineralization efficiency is low, the fine ore particles are easily entrained in the foam to cause pollution to the concentrate, and the grade of the flotation concentrate is reduced.
Unlike mechanical stirring flotation machine, the flotation column adopts particle bubble reverse flow mineralization mode, usually plunger flow type, particle bubble collision mineralization area, namely the collecting area, occupies larger space of the flotation column, the collecting area has relatively higher fluid turbulence, but compared with mechanical stirring flotation machine, the turbulence is much smaller, and thus the particle bubble collision mineralization intensity is much lower. Meanwhile, because particle and bubble union is subjected to certain turbulence interference in the flotation column, bubbles are overloaded, the migration path to the pulp interface is too long, and the like, the falling of coarse particles in the migration process cannot be avoided, which is probably the reason that the flotation column only shows certain advantages in the aspect of fine particle flotation. However, the flotation column can maintain a thicker foam layer and has small turbulence (quasi-static state), which is beneficial to the realization of the secondary enrichment process and shows certain advantages in the aspect of mineralized bubble separation.
From the above analysis of the flotation machine and flotation column sorting process we can conclude that: the flotation machine has the advantages of strong mineralization capability, poor separation environment of mineralized bubbles, low mineralization strength of the flotation column, good separation environment of mineralized bubbles, strengthened mineralization capability of the flotation column, and good separation environment of the flotation column, and can possibly improve the efficiency of the whole flotation column separation process.
SUMMERY OF THE UTILITY MODEL
In order to solve current flotation column mineralization intensity low, can't effectively overcome fine particle coal and mineral collision mineralization inefficiency and mineralize mineralization and collect the problem of district to foam stability interference, the utility model provides a cavitation jet microbubble flotation machine and cavitation jet bubble generator, its particle bubble mineralization district with high turbulent flow is kept apart with the mineralize mineralization bubble separation district of low turbulent flow relatively, has the advantage that particle bubble mineralize mineralization fluid turbulence level echelon reduces.
In order to solve the technical problem, the utility model discloses a technical scheme be: a cavitation jet microbubble flotation machine and a cavitation jet bubble generator comprise an intensive feeding aeration tank, an upper tank body and a lower tank body, wherein a middle partition plate is arranged in the intensive feeding aeration tank, a plurality of ore pulp distribution ports and a plurality of air distribution ports are respectively arranged on the side wall of the intensive feeding aeration tank and are positioned above and below the middle partition plate, and a plurality of bubble generators are connected with the intensive feeding aeration tank through the ore pulp distribution ports and the air distribution ports; an inner barrel is arranged in the lower barrel body, a rectifying grating is arranged on the upper surface of the inner barrel, and a discharge hole below the bubble generator penetrates through the rectifying grating and then is arranged in the inner barrel; and a concentrate overflow trough is arranged on the periphery of the upper barrel body.
The bubble generator comprises a feeding pipe, one end of the feeding pipe is connected with the ore pulp distribution port, the other end of the feeding pipe is connected with a nozzle, an outlet of the nozzle is connected with an inlet of the throat pipe assembly, the outlet of the nozzle and the inlet of the throat pipe assembly are both arranged in a first expansion pipe, and an air suction port between the nozzle and the throat pipe assembly is arranged on the first expansion pipe; the air suction port is connected with the air distribution port through an air suction pipe; the other end of the first enlarged pipe is connected with one end of the second enlarged pipe, and the other end of the second enlarged pipe is provided with a horn-shaped extension pipe.
The expansion angle of the expansion pipe is in the range of 0-10 degrees, and the ratio of the height to the expansion outlet is in the range of 1-10.
Bubble generator still includes clamp and nozzle holder, the nozzle holder card is established in the nozzle periphery, the one end of nozzle holder pass through the bolt with the one end fixed connection of choke subassembly and first enlarged pipe, the other end passes through clamp and pan feeding pipe fixed connection.
The intensive feeding inflation tank is also provided with a concentrated air inlet pipe positioned below the intermediate partition plate, the concentrated air inlet pipe is provided with an air valve, and the intensive feeding inflation tank is also provided with a vacuum meter for measuring the vacuum degree of a space below the intermediate partition plate.
A foam reflecting disc is arranged in the inner barrel.
The bottom of the concentrate overflow groove is provided with a concentrate outlet pipe, the bottom of the lower barrel body is provided with a tailing concentration barrel, the bottom of the inner barrel body is provided with a circulating pipe, the tailing concentration barrel is connected with a tailing tank through a tailing pipe, the tailing pipe is provided with an accident emptying valve, and the tailing tank is provided with a tailing adjusting screw rod.
In addition, the utility model also provides a cavitation jet bubble generator, including the pan feeding pipe, pan feeding pipe one end is connected with the ore pulp distribution mouth, and the other end is connected with the nozzle, the export of nozzle is connected with the entry of choke subassembly, and the export of nozzle and the entry of choke subassembly are all in the first enlarged tube, be provided with the induction port that is located between nozzle and choke subassembly on the first enlarged tube; the air suction port is connected with the air distribution port through an air suction pipe; the other end of the first enlarged pipe is connected with one end of the second enlarged pipe, and the other end of the second enlarged pipe is provided with a horn-shaped extension pipe.
The expansion angle of the expansion pipe is in the range of 0-10 degrees, and the ratio of the height to the expansion outlet is in the range of 1-10.
The cavitation jet bubble generator further comprises a hoop and a nozzle seat, the nozzle seat is clamped at the periphery of the nozzle, one end of the nozzle seat is fixedly connected with one end of the throat pipe assembly and the first expansion pipe through a bolt, and the other end of the nozzle seat is fixedly connected with the feeding pipe through the hoop.
Compared with the prior art, the utility model following beneficial effect has: the utility model provides a cavitation jet microbubble flotation device that can be applicable to fine grain coal and mineral flotation is air jet bubble generator, the utility model discloses a with ore pulp evenly distributed to a plurality of bubble generators above the pan feeding gas tube, utilize the nozzle in the bubble generator to form the efflux, make the gas of dissolving in the ore pulp separate out and form small gas core, simultaneously under the wrapping up and holding under the effect of efflux boundary layer separation, form the negative pressure in the bubble generator, thereby inhale the air from the breathing pipe, produce strong fluid mixing when gas-solid-liquid three-phase ore pulp passes through the throat subassembly of bubble generator at a high speed, inhale the gas dispersion and be the small bubble, form the secondary injection in throat subassembly export, the air that gets into the ore pulp at the stage of breathing in this moment further separates out with the mode of air pocket, the bubble is further cracked simultaneously, generate the bubble of smaller scale, therefore, the utility model has the characteristics of granule bubble mineralize mineralization fluid turbulence level echelon reduces, can generate the air pocket and generate conventional flotation bubble simultaneously at hydrophobic particle surface normal position, has realized the function that the relative mutual noninterference of isolation of granule bubble mineralize mineralization and mineralize mineralization bubble separation for the rate of recovery and the selectivity of fine grain flotation obtain synchronous improvement.
Drawings
Fig. 1 is a schematic structural diagram of a cavitation jet microbubble flotation machine according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an intensive feeding aeration tank according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the cavitation jet flotation bubble generator in the embodiment of the present invention.
In the figure: 1-an upper barrel body, 2-a lower barrel body, 3-a tailing pipe, 4-a tailing box, 5-an intensive feeding aeration tank, 6-a bubble generator, 7-a check valve, 8-an inner barrel, 9-a rectification grid, 10-a foam emission disc, 11-a circulation pipe, 12-a tailing concentrated barrel, 13-a concentrate overflow trough, 14-an air suction pipe, 15-a valve, 16-an operation platform, 17-a concentrate outlet pipe, 18-a tailing port, 19-an accident discharge valve, 20-a tailing port, 21-a tailing adjusting screw, 22-a clapboard, 23-a bottom plate, 24-a feeding port, 25-a pulp distribution port, 26-an air distribution port, 27-a concentrated air inlet pipe, 28-an air valve and 29-a vacuum meter, 30-feeding bent pipe, 31-feeding pipe, 32-nozzle, 33-nozzle seat, 34-hoop, 35-throat pipe component, 36-air suction port, 37-first enlarged pipe, 38-second enlarged pipe and 39-expanding pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the embodiment of the utility model provides a cavitation jet microbubble flotation machine and cavitation jet bubble generator, including intensive pan feeding aeration tank 5, upper barrel body 1 and lower barrel body 2. Wherein, intensive pan feeding aeration tank 5 is located operation platform 16's top, goes up staving 1 and lower staving 2 and is located operation platform 16 below to, go up staving 1 and be located 2 tops of lower staving, its formula structure as an organic whole.
As shown in fig. 2, a middle partition plate 22 is arranged in the intensive feeding aeration tank 5, and a plurality of slurry distribution ports 25 and a plurality of air distribution ports 26 are arranged on the side wall of the intensive feeding aeration tank and are respectively positioned above and below the middle partition plate 22.
As shown in fig. 1, a plurality of bubble generators 6 are connected with the intensive feed aeration tank 5 through the slurry distribution port 25 and the air distribution port 26; an inner barrel 8 is arranged in the lower barrel body 2, a rectifying grating 9 is arranged on the upper surface of the inner barrel 8, and a discharge hole below the bubble generator 6 penetrates through the rectifying grating 9 and then is arranged in the inner barrel 8; and a concentrate overflow trough 13 is arranged on the periphery of the upper barrel body 1. The concentrate overflow launder 13 is provided at the outer circumference of the upper tub 1 at a height higher than the tub wall of the upper tub so that the concentrate overflowing from the upper tub 1 can enter the concentrate overflow launder 13.
Specifically, as shown in fig. 3, the bubble generator 6 includes a feeding pipe 31, one end of the feeding pipe 31 is connected to the slurry distribution port 25, the other end of the feeding pipe 31 is connected to a nozzle 32, an outlet of the nozzle 32 is connected to an inlet of a throat assembly 35, and both the outlet of the nozzle 32 and the inlet of the throat assembly 35 are disposed in a first enlarged pipe 37, and a suction port 36 is disposed on the first enlarged pipe 37 and located between the nozzle 32 and the throat assembly 35; the air suction port 36 is connected with the air distribution port 26 through an air suction pipe 14, and the air suction pipe 14 is provided with a check valve 7; the other end of the first enlarged tube 37 is connected to one end of a second enlarged tube 38, and the other end of the second enlarged tube 38 is provided with a flared extension tube 39. In this embodiment, the nozzle 33 is an inverted cone, and the interior of the throat assembly 35 is a throat.
Further, in this embodiment, the expanding tube 39 has an expanding angle in the range of 0 to 10 degrees and a ratio of height to expanding outlet in the range of 1 to 10. In addition, the bubble generator 6 further comprises a feeding elbow 30, and the feeding pipe 31 is connected with the intensive feeding inflation tank 5 through the feeding elbow 30.
Further, as shown in fig. 3, in this embodiment, the bubble generator 6 further includes a clamp 34 and a nozzle holder 33, the nozzle holder 33 is clamped at the periphery of the nozzle 32, one end of the nozzle holder 33 is fixedly connected to one end of the throat assembly 35 and one end of the first enlarged tube 37 through bolts, and the other end of the nozzle holder 33 is fixedly connected to the feeding tube 31 through the clamp 34.
Further, as shown in fig. 2, a centralized air inlet pipe 27 located below the middle partition plate 22 is further disposed on the centralized feeding aeration tank 5, an air valve 28 is disposed on the centralized air inlet pipe 27, and a vacuum gauge 29 for measuring the vacuum degree of the space below the middle partition plate 22 is further disposed on the centralized feeding aeration tank 5.
Further, as shown in fig. 1, a foam reflection disc 10 is disposed in the inner barrel 8. In the embodiment, the foam reflecting disc 10 and the rectifying grating 9 are matched to act, so that on one hand, an upward flow velocity is forcibly formed on gas-solid-liquid three-phase flow entering a mineralized bubble and ore pulp separation space, and large particles are prevented from falling off from the bubbles, on the other hand, a high-turbulence particle bubble mineralization area is isolated from a low-turbulence mineralized bubble separation area, disturbance of the high-turbulence mineralization area on mineralized bubble separation and foam layer stability is inhibited, the flotation efficiency is improved, and particularly the recovery rate of coarse-particle particles is improved.
Further, as shown in fig. 1, a concentrate outlet pipe 17 is arranged at the bottom of the concentrate overflow chute 13, a tailing concentration barrel 12 is arranged at the bottom of the lower barrel body 2, a circulation pipe 11 is arranged at the bottom of the inner barrel 8, the tailing concentration barrel 12 is connected with a tailing port 20 through a tailing pipe 3, an accident discharge valve 19 is arranged on the tailing pipe 3, and a tailing adjusting screw 21 is arranged on the tailing port 20.
The working principle of the utility model is as follows: when the device works, float coal slurry is fed into the intensive feeding aeration tank 5 through the feed inlet 24 under the pressure of a pump, the slurry is uniformly distributed to a plurality of bubble generators 6 through the slurry distribution port 26, the air suction pipe 14 and the check valve 7 on the upper part of the intensive feeding aeration tank 5, pressure slurry forms jet flow when being sprayed out through the nozzle 32, negative pressure is formed in a space between the outlet of the nozzle 32 and the throat component 35, air is sucked from the intensive feeding aeration tank 5 through the air suction port 36 and the air suction pipe 14, the check valve 7 is arranged at one end of the air suction pipe 14 close to the bubble generators 6, the intensive feeding aeration tank 5 is provided with the pressure gauge 29, the total air inlet pipe 27 and the valve 28 arranged on the air suction pipe control the total air inflow through the opening degree of the valve 28; the gas-solid-liquid three-phase ore pulp generates strong fluid mixing when passing through the throat component 35 at a high speed, the sucked gas is dispersed into tiny bubbles, secondary injection is formed at the outlet of the throat component 35, particles and the bubbles generate strong collision mineralization at the first expanding pipe 37, the second expanding pipe 38 and the lower expanding pipe 39 of the bubble generator 6, hydrophobic coal particles are selectively attached to the bubbles to form particle bubble attachment bodies, and due to the arrangement of the lower expanding pipe 39, the outflow speed is reduced, the fluid turbulence and the impact force entering the inner barrel 8 are reduced, the phenomenon that the particles fall off the bubbles due to excessive turbulence is avoided, and the recovery of coarse particles is facilitated; gas-solid-liquid three-phase flow flowing out of a plurality of bubble generators 6 flows in a space formed by a foam reflecting disc 10 and a rectifying grid 9 in an inner barrel 8, particles and bubbles continuously perform a collision mineralization process, a small part of ore pulp is divided by gaps between the foam reflecting disc 10 and the inner barrel 8 and enters an ore pulp barrel before a feed pump of a micro-bubble flotation machine through a circulating pipe 11, most three-phase ore pulp enters a space formed by the rectifying grid 9 at an upper outlet of the inner barrel 8 and the mineralized bubbles formed by the upper barrel body 1 and the mineralized bubbles under the reflection action of the foam reflecting disc 10 at a lower upward speed through the rectifying grid 9, the mineralized bubbles rise to enter the upper part of the upper barrel body 1 to form a foam layer under the action of buoyancy, and the foam layer overflows from the upper barrel body; the ore pulp is discharged along the gap between the lower barrel body 3 and the inner barrel 8 towards the lower tailing concentrated barrel 12 through a tailing outlet 18, a tailing pipe 3, a tailing box 4 and a tailing port 20 on the tailing pipe 3, and an accident discharge valve 19 is arranged on the tailing pipe 3, so that the flotation process is completed.
The embodiment of the utility model provides a cavitation jet microbubble flotation device and cavitation jet bubble generator, its completion flotation process key subprocess particle bubble mineralize mineralization adhere to and take place to develop and carry out the design according to the principle that fluid turbulence degree echelon reduces. The highest fluid mixing intensity is in the space formed by the nozzle 32, the throat assembly 35 and the air suction pipe 36 in the bubble generator 6; the moderate fluid mixing intensity occurs in the space formed by the expanding pipes 37,38 and the lower expanding pipe 39 in the bubble generator 6, and the fluid mixing intensity is further reduced in the space formed by the foam reflection disc 10 and the rectifying grille 9 in the inner barrel 8; the turbulence degree of the fluid in the three mineralization spaces is decreased progressively according to the relation of 10 times, so that air pockets can be generated in situ on the surfaces of the hydrophobic particles, and conventional flotation bubbles can be generated at the same time, the functions of relative isolation and mutual noninterference of particle bubble mineralization and mineralization bubble separation are realized, and the recovery rate and selectivity of micro-fine particle flotation are synchronously improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. The cavitation jet flow micro-bubble flotation machine is characterized by comprising an intensive feeding aeration tank (5), an upper barrel body (1) and a lower barrel body (2), wherein a middle partition plate (22) is arranged in the intensive feeding aeration tank (5), a plurality of ore pulp distribution ports (25) and a plurality of air distribution ports (26) which are respectively positioned above and below the middle partition plate (22) are arranged on the side wall of the intensive feeding aeration tank, and a plurality of bubble generators (6) are connected with the intensive feeding aeration tank (5) through the ore pulp distribution ports (25) and the air distribution ports (26); an inner barrel (8) is arranged in the lower barrel body (2), a rectifying grating (9) is arranged on the upper surface of the inner barrel (8), and a discharge hole below the bubble generator (6) penetrates through the rectifying grating (9) and then is arranged in the inner barrel (8); a concentrate overflow trough (13) is arranged on the periphery of the upper barrel body (1); the bubble generator (6) comprises a feeding pipe (31), one end of the feeding pipe (31) is connected with the ore pulp distribution port (25), the other end of the feeding pipe is connected with a nozzle (32), an outlet of the nozzle (32) is connected with an inlet of a throat pipe assembly (35), the outlet of the nozzle (32) and the inlet of the throat pipe assembly (35) are both arranged in a first enlarged pipe (37), and an air suction port (36) located between the nozzle (32) and the throat pipe assembly (35) is arranged on the first enlarged pipe (37); the air suction opening (36) is connected with the air distribution opening (26) through an air suction pipe (14); the other end of the first enlarged pipe (37) is connected with one end of a second enlarged pipe (38), and the other end of the second enlarged pipe (38) is provided with a flared extension pipe (39).
2. The cavitation jet micro bubble flotation machine according to claim 1, wherein the expansion tube (39) has an expansion angle in the range of 0-10 degrees and a height to expansion outlet ratio in the range of 1-10.
3. The cavitation jet microbubble flotation machine according to claim 1, characterized in that the bubble generator (6) further comprises a clamp (34) and a nozzle holder (33), the nozzle holder (33) is clamped at the periphery of the nozzle (32), one end of the nozzle holder (33) is fixedly connected with the throat pipe assembly (35) and one end of the first enlarged pipe (37) through bolts, and the other end of the nozzle holder is fixedly connected with the feeding pipe (31) through the clamp (34).
4. The cavitation jet microbubble flotation machine according to claim 1, characterized in that a centralized air inlet pipe (27) is further arranged on the centralized feeding aeration tank (5) and is positioned below the middle partition plate (22), an air valve (28) is arranged on the centralized air inlet pipe (27), and a vacuum meter (29) for measuring the vacuum degree of the space below the middle partition plate (22) is further arranged on the centralized feeding aeration tank (5).
5. The cavitation jet microbubble flotation machine according to claim 1, characterized in that a foam reflection disc (10) is arranged in the inner barrel (8).
6. The cavitation jet flow micro-bubble flotation machine according to claim 1, characterized in that a concentrate outlet pipe (17) is arranged at the bottom of the concentrate overflow trough (13), a tailing concentration barrel (12) is arranged at the bottom of the lower barrel body (2), a circulating pipe (11) is arranged at the bottom of the inner barrel (8), the tailing concentration barrel (12) is connected with a tailing tank (4) through a tailing pipe (3), an accident discharge valve (19) is arranged on the tailing pipe (3), and a tailing adjusting screw (21) is arranged on the tailing tank (4).
7. The cavitation jet bubble generator is characterized by comprising a feeding pipe (31), wherein one end of the feeding pipe (31) is connected with a pulp distribution port (25), the other end of the feeding pipe is connected with a nozzle (32), an outlet of the nozzle (32) is connected with an inlet of a throat pipe assembly (35), the outlet of the nozzle (32) and the inlet of the throat pipe assembly (35) are both arranged in a first enlarged pipe (37), and an air suction port (36) positioned between the nozzle (32) and the throat pipe assembly (35) is arranged on the first enlarged pipe (37); the air suction opening (36) is connected with the air distribution opening (26) through an air suction pipe (14); the other end of the first enlarged pipe (37) is connected with one end of a second enlarged pipe (38), and the other end of the second enlarged pipe (38) is provided with a flared extension pipe (39).
8. Cavitation jet bubble generator as claimed in claim 7, characterized in that said expansion duct (39) has an expansion angle in the range of 0-10 degrees and a height to expansion exit ratio in the range of 1-10.
9. The cavitation jet bubble generator according to claim 7, further comprising a clamp (34) and a nozzle holder (33), wherein the nozzle holder (33) is clamped at the periphery of the nozzle (32), one end of the nozzle holder (33) is fixedly connected with the throat pipe assembly (35) and one end of the first enlarged pipe (37) through bolts, and the other end of the nozzle holder is fixedly connected with the feeding pipe (31) through the clamp (34).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921822650.9U CN211463522U (en) | 2019-10-28 | 2019-10-28 | Cavitation jet microbubble flotation machine and cavitation jet bubble generator |
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| CN201921822650.9U CN211463522U (en) | 2019-10-28 | 2019-10-28 | Cavitation jet microbubble flotation machine and cavitation jet bubble generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732412A (en) * | 2019-10-28 | 2020-01-31 | 太原睿孚特选煤技术有限公司 | cavitation jet flow microbubble flotation machine and cavitation jet flow bubble generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110732412A (en) * | 2019-10-28 | 2020-01-31 | 太原睿孚特选煤技术有限公司 | cavitation jet flow microbubble flotation machine and cavitation jet flow bubble generator |
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