CN112691793B - Intelligent flotation machine and use method - Google Patents

Abstract

The invention provides an intelligent flotation machine and a use method thereof, wherein the flotation machine comprises a flotation machine body, an underflow box is arranged at one side of the flotation machine body and is communicated with the flotation machine body, and an input end of the underflow box is sequentially communicated with a large sleeve and a feeding disperser; the collector atomization unit is used for atomizing the collector and inputting the collector into the large sleeve; the foaming agent atomizing unit is used for atomizing the foaming agent and inputting the foaming agent into the large sleeve; the input end of the stirring shaft is connected with the impeller, and the input end of the stirring shaft is connected with a stirring driving unit; the stirring outer sleeve is sleeved on the stirring shaft; the output end of the stirring outer sleeve is communicated with a slurry circulation chamber, and the outer sleeve of the stirring shaft is communicated with an air suction pipe; the slurry circulation chamber is sleeved outside the impeller; the slurry circulation chamber is provided with a plurality of air outlet channels communicated with the inside of the flotation machine body; the suction duct is used for guiding air into the stirring outer sleeve. The invention solves the problems of insufficient air inlet amount in the flotation machine and insufficient mixing of the collector, the foaming agent and the slurry, and improves the recovery rate of the clean coal.

Description

Intelligent flotation machine and use method

Technical Field

The invention belongs to the technical field of mineral separation equipment, and particularly relates to an intelligent flotation machine and a use method thereof.

Background

Flotation is one of the widely used production processes in mineral separation production processes, and is a technical method for separating useful minerals from ores according to different physical and chemical properties of the surfaces of mineral particles. Flotation is usually carried out in a flotation machine, ore pulp treated by adding a reagent is stirred and aerated in the flotation machine, so that some ore particles are selectively fixed on bubbles, and the ore pulp floats to the surface of the ore pulp to be scraped out to form a foam product; the rest part is remained in the ore pulp to achieve the purpose of separating minerals. In the flotation process, minerals with low adhesive force gradually separate from bubbles and sink to form tailings; and the useful metal minerals with larger adhesive force rise along with the bubbles, and a large number of bubbles carry the metal minerals to form a foam layer and float to the surface of the ore pulp to be scraped out, so that the clean coal is formed.

In the prior art, the flotation machine has a plurality of structural forms, the most common use at present is a mechanical stirring flotation machine, and the prior flotation machine has the following defects in use: 1) The air inlet amount is insufficient during flotation, the efficiency is low during foam generation, and the time is very long; 2) In the process of medicated flotation, the collector, frother and slurry are not well mixed. Thus, the recovery rate of clean coal is low.

Disclosure of Invention

The invention aims to provide an intelligent flotation machine and a use method thereof, which are used for solving the problems that the air inlet amount of the flotation machine is insufficient, and a collector, a foaming agent and slurry cannot be fully mixed, so as to improve the recovery rate of clean coal. In order to achieve the above purpose, the invention adopts the following technical scheme:

an intelligent flotation machine comprising:

a flotation machine body;

the bottom flow box is arranged on one side of the flotation machine body, the output end of the bottom flow box is communicated with the flotation machine body, and the input end of the bottom flow box is sequentially communicated with a large sleeve and a feeding disperser; a dispersing spray plate communicated with the feeding disperser and the large sleeve is fixed in the large sleeve;

the collector atomization unit is used for atomizing a collector and inputting the collector into the large sleeve, and the collector atomization unit is communicated with the large sleeve;

the foaming agent atomizing unit is used for atomizing the foaming agent and inputting the foaming agent into the large sleeve, and the foaming agent atomizing unit is communicated with the large sleeve;

the stirring outer sleeve and the stirring shaft extend into the flotation machine body, the output end of the stirring shaft is connected with an impeller, and the input end of the stirring shaft is connected with a stirring driving unit; a stirrer bearing is arranged on the stirring shaft; the stirring outer sleeve is sleeved on the stirring shaft and comprises a bearing chamber for mounting the stirrer bearing; the output end of the stirring outer sleeve is communicated with a slurry circulation chamber, and the stirring shaft outer sleeve is communicated with an air suction pipe;

the slurry circulation chamber is sleeved outside the impeller; the slurry circulation chamber is provided with a plurality of air outlet channels communicated with the inside of the flotation machine body;

and the air suction pipe is used for guiding air into the stirring outer sleeve, and the input end of the air suction pipe is connected with an air suction control valve.

Preferably, the collector atomization unit comprises a collector feed inlet, a collector atomization nozzle and a collector air inlet which are sequentially communicated; the collector atomizing nozzle is fixed on the outer wall of the large sleeve; the output end of the collector atomizing nozzle is communicated with the inside of the large sleeve.

Preferably, a collector electric valve and a collector metering device are arranged between the collector feeding port and the collector atomizing nozzle.

Preferably, a plurality of diversion trenches are arranged on the inner bottom surface of the flotation machine body, and the diversion trenches are correspondingly arranged with the air outlet channel; the diversion trenches are communicated with the corresponding air outlet channels.

Preferably, the diversion trench is surrounded by a pair of diversion plates which are oppositely arranged; the guide plate is arc-shaped.

Preferably, the stirring driving unit comprises a small stirring belt pulley and a large stirring belt pulley which are connected in a belt manner; the stirring small belt pulley is connected to an output shaft of a stirring driving motor, and the stirring driving motor is fixed to the flotation machine body.

Preferably, the flotation device further comprises a flotation unit for beating froth to the outside of the flotation machine body, the flotation unit comprising a star-shaped scraper and a driving device; the star-shaped scraping plate is sleeved on a central shaft, and one end of the central shaft is connected with an output shaft of the driving device; and a gap for beating out the foam is formed between the star-shaped scraping plate and the refined coal slurry chute at the upper end of the flotation machine body.

Preferably, a discharge plate is detachably arranged in the flotation machine body, an outlet is formed in the bottom of the flotation machine body, and a tail coal discharge port is formed between the discharge plate and one side surface of the flotation machine body provided with the outlet; the outlet and the stirring shaft are positioned on different sides of the discharge plate.

Preferably, a density sensor for detecting the density in the slurry and a pressure sensor for detecting the pressure in the cavity are arranged on the feeding disperser; the flotation machine body is provided with a clean coal sensor and a tail coal sensor.

The use method of the flotation machine is based on the intelligent flotation machine and is characterized by comprising the following steps of:

step one: the slurry is conveyed into an inner cavity of a feeding disperser through a pipeline and then dispersed to a large sleeve through a dispersing spray plate; meanwhile, the collector is atomized by the collector atomizing unit and is input into the large sleeve, and the foaming agent is atomized by the foaming agent atomizing unit and is input into the large sleeve; the atomized collecting agent and the atomized foaming agent are mixed with the slurry in the large sleeve;

step two: the slurry, the atomized collector and the atomized foaming agent sequentially enter the flotation machine body through the large sleeve and the underflow box;

step three: starting a stirring power unit, and rotating an impeller to stir slurry in the flotation machine body; simultaneously, external air sequentially enters the large sleeve through the air suction control valve and the air suction pipe, enters the slurry circulation chamber through the large sleeve, and is discharged through the air outlet channel;

the slurry in the flotation machine body, the atomized collector, the atomized foamer and the air discharged from the air outlet channel are mixed, and the bubbles are bonded with the minerals in the slurry to form foam.

Compared with the prior art, the invention has the advantages that:

(1) Through setting up the control valve of breathing in, breathing pipe, stirring outer sleeve, slurry circulation chamber and (mixing) shaft, during operation, the impeller rotates, through control valve of breathing in and stirring outer sleeve, will external air is led into the impeller negative pressure area (slurry circulation chamber) constantly, has increased the air intake of the flotation machine, can obtain sufficient air while making the flotation machine run, can produce a large amount of foam in certain time while stirring; meanwhile, under the action of centrifugal force of the impeller, air sucked into the stirring outer sleeve is sheared by the impeller to form bubbles and crushed, the air overflows from an air outlet channel of the slurry circulation chamber, and under the stirring action of the impeller, the collector, the foaming agent, the slurry and the bubbles are fully mixed at the slurry circulation chamber. Thereby, the recovery rate of the clean coal is improved.

(2) The diversion trench arranged on the inner bottom surface of the flotation machine body shunts the collector, the foaming agent and the slurry entering the flotation machine body so as to realize uniform mixing with bubbles overflowing from the slurry circulation chamber, thereby further improving the recovery rate of the clean coal.

(3) The slurry is uniformly distributed by the disperser and then is mixed with the atomized collecting agent and the atomized foaming agent, so that the slurry, the collecting agent and the foaming agent are uniformly mixed, and the next step of full mixing with bubbles is ensured to be smoothly carried out.

Drawings

FIG. 1 is an isometric view of an intelligent flotation machine according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is a left side view of FIG. 1;

FIG. 5 is a right side view of FIG. 1;

FIG. 6 is a top view of FIG. 1;

FIG. 7 is a cross-sectional view of FIG. 1;

FIG. 8 is a schematic view of the positional relationship between the clean coal slurry chute and the star-shaped flights of FIG. 1;

FIG. 9 is a diagram showing the positional relationship among a flow guide groove, an outer stirring sleeve, a stirring shaft, an impeller and a slurry circulation chamber in an intelligent flotation machine according to an embodiment of the present invention;

FIG. 10 is a schematic view showing the positional relationship among the stirring outer sleeve, the impeller and the stirring shaft in the intelligent flotation machine according to the embodiment of the invention;

FIG. 11 is a schematic view of the tail coal discharge port of FIG. 1;

fig. 12 is a schematic diagram showing the positional relationship among the blowing agent inlet, the blowing agent motor valve, the blowing agent meter, the blowing agent atomizing nozzle, and the blowing agent air inlet in fig. 1.

The slurry-collecting device comprises a 1-feeding disperser, a 2-disperser feed inlet flange, a 3-disperser top cover, a 4-density sensor, a 5-pressure sensor, a 6-large sleeve, a 7-underflow box, an 8-collector feed inlet, a 9-collector electric valve, a 10-collector metering device, an 11-collector atomizing nozzle, a 12-collector air inlet, a 13-foamer feed inlet, a 14-foamer electric valve, a 15-foamer metering device, a 16-foamer atomizing nozzle, a 17-foamer air inlet, a 18-flotation machine body, a 19-supporting seat, a 20-star-shaped scraper, a 21-driving device, a 22-clean coal sensor, a 23-tail coal sensor, a 24-inspiration control valve, a 25-inspiration flow sensor, a 26-inspiration pipe, a 27-star-shaped scraper tail bearing seat, a 28-stirring driving motor, a 29-stirring small belt pulley, a 30-stirring transmission triangle belt, a 31-stirring large air inlet, a 32-stirring bearing chamber, a 33-outer sleeve, a 34-guiding groove, a 35-stirring motor, a 36-stirring beam, a 37-stirring shaft, a 37-supporting seat, a 37-stirring chute-supporting seat, a 37-spraying chute-supporting seat, a slurry-spraying chute, a 43-supporting seat, a slurry-dispersing impeller, a 40-spraying chute-supporting seat, a 41-circulating coal-spraying chute, a circulating coal bearing, a 43-spraying chute, a circulating coal-spraying machine and a circulating coal-spraying device.

Detailed Description

The present invention will be described in more detail below with reference to the drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art can modify the invention described herein while still achieving the advantageous effects of the invention. Accordingly, the following description is to be construed as broadly known to those skilled in the art and not as limiting the invention.

As shown in fig. 1 to 12, an intelligent flotation machine includes: the flotation machine body 18, the disperser unit, the collector atomizing unit, the foamer atomizing unit, the stirring unit, the air suction unit, the scraping unit, the monitoring unit and the control unit.

The disperser unit comprises a feeding disperser 1, a disperser feed inlet flange 2, a disperser top cover 3, a large sleeve 6, an underflow box 7 and a dispersing spray plate 38.

The feeding disperser 1 is welded and fixed with a disperser feed inlet flange 2, the disperser feed inlet flange 2 is connected with a flange of an external slurry conveying pipeline by bolts, and slurry enters the inner cavity of the feeding disperser 1 through an inlet of the disperser feed inlet flange 2.

The disperser top cover 3 is connected with the upper part of the feeding disperser 1 by bolts, the plane of the disperser top cover 3 is respectively drilled and tapped, and is parallel to be distributed, and is respectively in threaded connection with the density sensor 4 and the pressure sensor 5, and is mainly used for monitoring the density in slurry after the feeding disperser 1 is filled with slurry and the pressure in the inner cavity of the feeding disperser 1, and the output wires of the density sensor 4 and the pressure sensor 5 are connected with a control unit and used for transmitting collected data.

The underflow box 7 is arranged on one side of the flotation machine body 18, the output end of the underflow box is communicated with the flotation machine body 18, and the input end of the underflow box is sequentially communicated with a large sleeve 6 and a feeding disperser 1; a dispersing spray plate 38 is fixed in the large sleeve 6 and communicates the feed disperser 1 with the large sleeve 6, as shown in fig. 7. Specifically, the outside of the feeding disperser 1 is connected with an upper flange plate outside the large sleeve 6 through a lower flange plate by bolts, the flange at the lower end of the large sleeve 6 is fixedly connected with an upper port flange of the underflow box 7 by bolts, and a side port of the underflow box 7 is fixedly welded with an inlet of the machine body. Wherein, the inner diameter cavity at the lower end of the feed disperser 1 is welded with the dispersing spray plate 38 in the same diameter, the dispersing spray plate 38 faces downwards in an arc shape, slurry discharging holes are uniformly distributed on the plate surface, and when external slurry enters the feed disperser 1, the external slurry is dispersed and discharged through small holes on the dispersing spray plate 38 to form uniform rain columns to flow downwards.

And the collector atomization unit is used for atomizing and inputting the collector into the large sleeve 6, and is communicated with the large sleeve 6, as shown in fig. 7. Specifically, as shown in fig. 3, the collector atomizing unit includes a collector inlet 8, a collector atomizing nozzle 11, and a collector inlet 12, which are sequentially communicated. The collector atomizing nozzle 11 is fixed on the outer wall of the large sleeve 6; the output end of the collector atomizing nozzle 11 is communicated with the inside of the large sleeve 6; a collector electric valve 9 and a collector metering device 10 are arranged between the collector feed inlet 8 and the collector atomizing nozzle 11. In the embodiment, an external collector storage tank is connected with a collector inlet 8 through a hose, a collector is input, the collector inlet 8 is connected with an inlet of a collector electric valve 9 through stainless steel pipe threads, an outlet of the collector electric valve 9 is connected with an inlet of a collector metering device 10 through stainless steel pipe threads, an outlet of the collector metering device 10 is connected with a collector atomizing nozzle 11 through stainless steel pipe threads, an air inlet of the collector atomizing nozzle 11 is connected with a quick plug threaded end of a collector air inlet 12 through threads, a quick plug straight plug end of the collector air inlet 12 is connected with an external air source point, compressed air of 0.5-0.7Mpa is provided from outside, the compressed air and the collector are mixed in a nozzle in the collector atomizing nozzle 11, and the collector is atomized into micron-sized particles and slurry through the compressed air.

And the foaming agent atomizing unit is used for atomizing the foaming agent and inputting the foaming agent into the large sleeve 6, and the foaming agent atomizing unit is communicated with the large sleeve 6. The operating principle of the foamer atomizing unit is the same as that of the collector atomizing unit described above. Specifically, as shown in fig. 2 and 12, the foamer atomizing unit includes a foamer feed port 13, a foamer atomizing nozzle 16, and a foamer air inlet 17, which are sequentially communicated. The foaming agent atomizing nozzle is fixed on the outer wall of the large sleeve 6; the output end of the foaming agent atomizing nozzle 16 is communicated with the inside of the large sleeve 6; a foaming agent electric valve 14 and a foaming agent metering device 15 are arranged between the foaming agent feed opening 13 and the foaming agent atomizing nozzle 16. In this embodiment, the external foamer storage tank is connected with the foamer feed inlet 13 by a hose, the foamer is fed in, the foamer feed inlet 13 is connected with the foamer electric valve 14 by a stainless steel pipe in a threaded manner, the foamer electric valve 14 outlet is connected with the foamer metering device 15 inlet by a stainless steel pipe in a threaded manner, the foamer metering device 15 outlet is connected with the foamer atomizing nozzle 16 feed inlet by a stainless steel pipe in a threaded manner, the foamer atomizing nozzle 16 is screwed with the foamer air inlet 17 fast plug screw end, the foamer air inlet 17 fast plug straight pipe end is connected with an external air source point, compressed air of 0.5-0.7Mpa is supplied from the outside, the compressed air and the foamer are mixed in the foamer atomizing nozzle 16 inner nozzle, and the foamer is atomized into micron-sized particles and fully dissolved with slurry by the compressed air.

The stirring unit includes a stirring drive unit, a stirring outer sleeve 33, a stirring shaft 36, an impeller 41, and a slurry circulation chamber 40. As shown in fig. 7, the stirring outer sleeve 33 and the stirring shaft 36 extend into the flotation machine body 18, the output end of the stirring shaft 36 is connected with an impeller 41, and the input end is connected with a stirring driving unit; a stirrer bearing is arranged on the stirring shaft 36; an outer stirring sleeve 33 sleeved on the stirring shaft 36, wherein the outer stirring sleeve 33 comprises a pair of bearing chambers 32 for mounting the bearings of the stirrer and a sleeve body communicated with the bearing chambers 32, as shown in fig. 7 and 10; the output end of the stirring outer sleeve 33 is communicated with a slurry circulation chamber 40, and the stirring shaft outer sleeve 33 is communicated with an air suction pipe 26; the slurry circulation chamber 40 is sleeved outside the impeller 41; the slurry circulation chamber 40 is provided with a plurality of air outlet channels which are communicated with the inside of the flotation machine body 18, as shown in fig. 9. Preferably, the agitation driving unit comprises a small agitation pulley 29 and a large agitation pulley 31 with connection; the agitating pinion 29 is connected to an output shaft of an agitating drive motor 28, and the agitating drive motor 28 is fixed to the flotation machine body 18.

In this embodiment, the flanges at the two ends of the stirring support beam 35 are connected with the upper flange of the flotation machine body 18 by bolts, and the upper flange of the flotation machine body 18 is welded and fixed with the flotation machine body 18.

The lower end of the stirring motor supporting seat 37 is fixed with the left outer side of the stirring supporting beam 35 in a welding mode, and the flange at the upper end of the stirring motor supporting seat 37 is connected with the flange at the front end of the stirring driving motor 28 by bolts.

The output shaft end of the stirring driving motor 28 is connected with the stirring small belt pulley 29 through a concentric shaft and is positioned by an inner key bar, the center of the stirring small belt pulley 29 is provided with a hole, a bolt is penetrated downwards from the center of the hole, and the bolt and a threaded hole at the shaft end of the motor are screwed into and tightly press the stirring small belt pulley 29; the stirring small belt pulley 29 is matched with the stirring transmission triangular belt 30, the stirring transmission triangular belt 30 is matched with the stirring large belt pulley 31, the shaft hole of the stirring large belt pulley 31 is coaxially connected with the upper end shaft of the stirring shaft 36, the inner key bar is positioned, the center of the stirring large belt pulley 31 is provided with a hole, a bolt is downwards penetrated through the hole center, the bolt and a threaded hole at the shaft end of a motor are screwed into the stirring shaft 36 to be tightly pressed, the stirring shaft 36 downwards penetrates through the stirring bearing chamber 32, and the upper end and the lower end of the stirring bearing chamber 32 are respectively provided with a stirrer bearing 39.

The upper end bearing end of the stirrer bearing 39 is tightly pressed and fixed, the bearing end cover is connected with the upper end of the bearing chamber 32 by bolts, the lower end flange of the bearing chamber 32 is connected with the upper end flange of the sleeve body of the stirring outer sleeve 33 by bolts, the lower end flange of the sleeve body of the stirring outer sleeve 33 is connected with the upper end flange of the slurry circulation chamber 40 by bolts, the lower end of the slurry circulation chamber 40 is connected with the bottom plate of the diversion trench 34, namely, the distance between the bottom plate and the bottom of the flotation machine body 18 is 8mm, the diversion trench 34 is welded at the bottom of the flotation machine body 18, the stirring shaft 36 penetrates into the stirring bearing chamber 32 and concentrically penetrates through the stirrer bearing 39 and penetrates into the center of the inner cavity of the slurry circulation chamber 40, the lower end shaft of the stirring shaft 36 is coaxially connected with the impeller 41 by an inner spline for positioning, and the impeller 41 is locked and fixed by the locking nut. Namely, the diversion trench 34 is arranged on the inner bottom surface of the flotation machine body, and the diversion trench 34 is correspondingly arranged with the air outlet channel; the diversion trenches 34 are communicated with the corresponding air outlet channels; the diversion trench 34 is surrounded by a pair of diversion plates which are oppositely arranged; the baffle is arcuate as shown in fig. 7 and 9.

The suction unit comprises a suction control valve 24, a suction flow sensor 25 and a suction pipe 26. The air suction pipe 26 is used for guiding air into the stirring outer sleeve 33, the input end of the air suction pipe is connected with an air suction control valve 24, a threaded hole at the outer side of the air suction control valve 24 is connected with the air suction flow sensor 25 through threads, a signal transmission cable of the air suction flow sensor 25 is connected with the data acquisition unit, and the opening of the air suction control valve 24 is accurately adjusted through the control unit, so that air suction quantity standardization and air suction quantity digitization are realized. In the embodiment, the lower end of the air suction pipe 26 is connected and communicated with the four-position opening of the stirring outer sleeve 33 from bottom to top by adopting a welding method.

A flotation unit for beating froth to the outside of the flotation machine body 18, the flotation unit comprising a star-shaped scraper 20 and driving means 21; the star-shaped scraping plate 20 is sleeved on a central shaft, and one end of the central shaft is connected with an output shaft of the driving device 21; a gap for beating out froth is formed between the star-shaped scraper 20 and the clean coal slurry chute 43 at the upper end of the flotation machine body 18, as shown in fig. 8. In this embodiment, the supporting seat 19 is symmetrically fixed at the left and right outer ends of the machine body 18 by adopting a welding mode, the base of the driving device 21 is fixed with the supporting seat 19 by adopting bolts, the front end shaft of the driving device 21 is coaxially connected with the left end of the star-shaped scraper 20 to be positioned by an inner key bar, the tail bearing seat 27 of the star-shaped scraper is coaxially connected with the right end shaft of the star-shaped scraper 20 to be positioned by an inner key bar, and the tail bearing seat 27 of the star-shaped scraper is fixed at the right outer end of the machine body 18 by adopting bolts.

A discharge plate is fixed in the flotation machine body 18, as shown in fig. 11, an adjustable overflow weir is arranged on the discharge plate, an outlet is arranged at the bottom of the flotation machine body 18, and a tail coal discharge port 42 is formed between the discharge plate and one side surface of the flotation machine body where the outlet is positioned, as shown in fig. 7; the outlet and the stirring shaft 36 are located on different sides of the discharge plate. Specifically, a discharge hole communicated with the tail coal discharge hole 42 is formed in the discharge plate, and an adjustable overflow weir is arranged on the discharge hole. Specifically, the adjustable overflow weir is a rectangular steel plate and can be adjusted in an up-and-down lifting manner, such as a water station flashboard.

The monitoring unit comprises a density sensor 4, a pressure sensor 5, a clean coal sensor 22 and a tail coal sensor 23. The clean coal sensor 22 is fixed on the left side of the flotation machine body 18 near the outlet direction of the clean coal slurry chute 43 and is used for monitoring the clean coal content in the clean coal slurry, and an output signal is connected with the data acquisition unit; the tail coal sensor 23 is fixed at a half position upwards in the middle of a tail coal discharge hole 42 on the right side of the flotation machine body 18 and is used for monitoring the tail coal content in tail coal slurry, and an output signal is connected with the data acquisition unit. In this embodiment, the data acquisition unit is in signal connection with the control unit.

In the running process of the flotation machine, the given quantity of the collector and the foaming agent is quantified according to real-time data acquired by the tail coal sensor 23 according to actual production requirements, so that the random adjustment of the given quantity of the collector and the foaming agent by adopting a manual observation method is avoided, the full data and intelligent control is realized, and the flotation quantity of the clean coal can be accurately improved by more than 30 percent compared with the prior art; secondly, the data collected by all the sensors can enter a database for storage, so that the summary, analysis and guidance of production are facilitated, and human interference factors are avoided; after data quantization, a large amount of data in a database can be analyzed, the recovery rate of clean coal can be accurately improved according to the raw coal feeding index, the purposes of improving yield and efficiency are achieved, considerable economic benefits are brought to production enterprises, and the technical achievement can be completely achieved.

The working principle of the flotation machine is as follows:

(1) The slurry is conveyed into the inner cavity of the feeding disperser 1 through a pipeline, pressure and density are formed in the inner cavity, and then the slurry is sprayed on a plate in a dispersing way to form a dense rain column-shaped stockline and is dispersed to the large sleeve 6.

Meanwhile, after the collector is atomized and the foaming agent is atomized, the collector and the foaming agent are both dissolved with the slurry in the large sleeve. Specific: the collector enters a collector atomizing nozzle 11 through a collector feeding port 8, the collector is atomized to particles with the diameter of 0.5um in the inner cavity of the nozzle, the collector atomizing nozzle 11 sprays mist into the large sleeve 6, and the mist is mixed with a rain column-shaped stockline formed by a dispersion spraying plate 38 and is diffused into the large sleeve 6; meanwhile, the foaming agent enters the foaming agent atomizing nozzle 16 through the foaming agent feeding port 13, the foaming agent is atomized to particles of 0.5um in the inner cavity of the nozzle, the foaming agent atomizing nozzle 16 sprays mist shapes into the large sleeve 6, and the mist shapes are mixed with a rain column-shaped stockline formed by the dispersion spraying plate 38 and spread to the large sleeve 6.

(2) The slurry, the atomized collector and the atomized foaming agent are dissolved and then enter the flotation machine body 18 through the large sleeve 6 and the underflow box 7.

(3) Starting a stirring power unit, and rotating an impeller to stir slurry in the flotation machine body; simultaneously, external air sequentially enters the large sleeve 6 through the air suction control valve and the air suction pipe, enters the slurry circulation chamber 40 through the large sleeve 6, and is discharged through the air outlet channel. Specifically, the stirring driving motor 28 is powered on to drive the small stirring belt pulley 29 to drive the large stirring belt pulley 31 to drive the stirring shaft 36 to synchronously rotate with the impeller 41 through the stirring transmission triangular belt 30, the impeller 41 rotates, and air is guided into a negative pressure area where the impeller is located through the air suction control valve 24 and the air suction pipe 26, so that the air suction amount of the impeller is increased.

The slurry in the flotation machine body 18, the atomized collector, the atomized foamer, and the air bubbles discharged from the air outlet passage are then mixed, and the air bubbles adhere to the minerals in the slurry to form foam, and then uniformly spread upward through the guide grooves 34. Wherein the air bubbles are formed by shearing and pulverizing the air in the stirring outer sleeve 33 by the impeller 41 in the slurry circulation chamber 40. The bubbles contact the coal particles to form mineralized foam, are uniformly distributed on the cross section of each diversion trench 34, and move upwards into the separation zone, and a large amount of foam is enriched to form a spongy foam layer.

(4) The driving device 21 is powered to drive the star-shaped scraper 20, and the star-shaped scraper 20 discharges a foam layer from a gap between the clean coal slurry chute 43 and the star-shaped scraper 20 to form clean coal foam; the tail coal flows out to the tail coal discharge port 42 through an adjustable overflow weir arranged on the discharge plate, and is discharged into the material pool through the tail coal discharge port 42.

In this embodiment, the tailing sensor 23 and the clean coal sensor 22 detect the content in the slurry, and send analog signals to the data acquisition unit, the density sensor 4, the pressure sensor 5, the foamer meter 15, the collector meter 10 and the air suction flow sensor 25 send analog signals to the data acquisition unit respectively, and the opening of the collector electric valve 9, the foamer electric valve 14 and the air suction control valve 24 and the height of the tailing box flashboard are adjusted by the control unit according to set values through the data acquisition unit, so that the full-automatic intelligent clean coal flotation is finally realized.

The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art will make any equivalent substitution or modification to the technical solution and technical content disclosed in the invention without departing from the scope of the technical solution of the invention, and the technical solution of the invention is not departing from the scope of the invention.

Claims (6)

1. An intelligent flotation machine, comprising:

a flotation machine body;

the bottom flow box is arranged on one side of the flotation machine body, the output end of the bottom flow box is communicated with the flotation machine body, and the input end of the bottom flow box is sequentially communicated with a large sleeve and a feeding disperser; a dispersing spray plate communicated with the feeding disperser and the large sleeve is fixed in the large sleeve;

the collector atomization unit is used for atomizing a collector and inputting the collector into the large sleeve, and the collector atomization unit is communicated with the large sleeve;

the foaming agent atomizing unit is used for atomizing the foaming agent and inputting the foaming agent into the large sleeve, and the foaming agent atomizing unit is communicated with the large sleeve;

the stirring outer sleeve and the stirring shaft extend into the flotation machine body, the output end of the stirring shaft is connected with an impeller, and the input end of the stirring shaft is connected with a stirring driving unit; the stirring outer sleeve is sleeved on the stirring shaft, the output end of the stirring outer sleeve is communicated with a slurry circulation chamber, and the stirring shaft outer sleeve is communicated with an air suction pipe;

the slurry circulation chamber is sleeved outside the impeller; the slurry circulation chamber is provided with a plurality of air outlet channels communicated with the inside of the flotation machine body;

the air suction pipe is used for guiding air into the stirring outer sleeve, and the input end of the air suction pipe is connected with an air suction control valve;

a plurality of diversion trenches are arranged on the inner bottom surface of the flotation machine body, and the diversion trenches are correspondingly arranged with the air outlet channel; the diversion trench is communicated with the corresponding air outlet channel; the diversion trench is used for diverting the collector, the foaming agent and the slurry entering the flotation machine body so as to realize uniform mixing with bubbles overflowed from the slurry circulation chamber;

after the slurry is uniformly split by the disperser, the slurry is mixed with the atomized collecting agent and the atomized foaming agent, so that the slurry, the collecting agent and the foaming agent are uniformly mixed, and the next step of sufficiently mixing with bubbles is ensured to be smoothly carried out;

when the slurry circulating device works, the impeller rotates, and external air is continuously introduced into the slurry circulating chamber through the air suction control valve, the air suction pipe and the stirring outer sleeve;

the collector atomizing unit comprises a collector feed inlet, a collector atomizing nozzle and a collector air inlet which are sequentially communicated; the collector atomizing nozzle is fixed on the outer wall of the large sleeve; the output end of the collector atomizing nozzle is communicated with the inside of the large sleeve;

a collector electric valve and a collector metering instrument are arranged between the collector feeding port and the collector atomizing nozzle;

the feeding disperser is provided with a density sensor for detecting the density in slurry and a pressure sensor for detecting the pressure in the inner cavity; the flotation machine body is provided with a clean coal sensor and a tail coal sensor;

the slurry is conveyed into an inner cavity of a feeding disperser (1) through a pipeline, pressure and density are formed in the cavity, and then the slurry is sprayed on a plate through dispersion to form dense rain column-shaped stocklines and is dispersed to a large sleeve (6);

meanwhile, after the collector is atomized and the foaming agent is atomized, the collector and the foaming agent are both dissolved with slurry in the large sleeve, and the specific steps are as follows: the collector enters a collector atomizing nozzle (11) through a collector feeding port (8), the collector is atomized to particles with the diameter of 0.5um in the inner cavity of the nozzle, the collector atomizing nozzle (11) sprays mist into the large sleeve (6), and the mist is mixed with a rain column-shaped stockline formed by a dispersion spraying plate (38) and is diffused to the large sleeve (6); meanwhile, the foaming agent enters a foaming agent atomizing nozzle (16) through a foaming agent feeding hole (13), the foaming agent is atomized to particles with the diameter of 0.5um in the inner cavity of the nozzle, the foaming agent atomizing nozzle (16) sprays a fog shape into the large sleeve (6), and the fog shape is mixed with a rain column-shaped stockline formed by a dispersion spraying plate (38) and is diffused to the large sleeve (6);

the slurry, the atomized collector and the atomized foaming agent are dissolved and then enter a flotation machine body (18) through a large sleeve (6) and an underflow box (7) in sequence;

external air sequentially enters the large sleeve (6) through the air suction control valve and the air suction pipe, enters the slurry circulation chamber (40) through the large sleeve (6), and is discharged through the air outlet channel;

then, mixing the slurry in the flotation machine body (18), the atomized collector, the atomized foaming agent and the air bubbles discharged from the air outlet channel, bonding the air bubbles with minerals in the slurry to form foam, and uniformly diffusing upwards through the diversion trench (34), wherein the air bubbles are formed by shearing and crushing air in the stirring outer sleeve (33) by the impeller (41) in the slurry circulation chamber (40); the bubbles contact with coal particles to form mineralized foam, are uniformly distributed on the cross section of each diversion trench (34), and move upwards to enter a separation area, and a large amount of foam is enriched to form a spongy foam layer;

the tail coal sensor (23) and the clean coal sensor (22) detect the content in the slurry, and send analog quantity signals to the data acquisition unit, the density sensor (4), the pressure sensor (5), the foaming agent meter (15), the collecting agent meter (10) and the air suction flow sensor (25) respectively send analog quantity signals to the data acquisition unit, and the opening degree of the collecting agent electric valve (9), the foaming agent electric valve (14) and the air suction control valve (24) and the height of a gate plate of a tailing box are adjusted by the control unit according to set values through the data acquisition unit, so that full-automatic intelligent clean coal flotation is finally realized.

2. The intelligent flotation machine according to claim 1, wherein the diversion trench is surrounded by a pair of oppositely disposed diversion plates; the guide plate is arc-shaped.

3. The intelligent flotation machine according to claim 1, wherein the agitation drive unit comprises a small agitation pulley and a large agitation pulley with connections; the stirring small belt pulley is connected to an output shaft of a stirring driving motor, and the stirring driving motor is fixed to the flotation machine body.

4. The intelligent flotation machine according to claim 1, further comprising a flotation unit for beating froth to the outside of the flotation machine body, said flotation unit comprising a star-shaped scraper and drive; the star-shaped scraping plate is sleeved on a central shaft, and one end of the central shaft is connected with an output shaft of the driving device; and a gap for beating out the foam is formed between the star-shaped scraping plate and the refined coal slurry chute at the upper end of the flotation machine body.

5. The intelligent flotation machine according to claim 1, wherein a discharge plate is detachably arranged in the flotation machine body, an outlet is formed in the bottom of the flotation machine body, and a tail coal discharge port is formed between the discharge plate and one side surface of the flotation machine body where the outlet is located; the outlet and the stirring shaft are positioned on different sides of the discharge plate.

6. A method of using a flotation machine, based on an intelligent flotation machine according to any one of claims 1 to 5, characterized in that it comprises the steps of:

step one: the slurry is conveyed into an inner cavity of a feeding disperser through a pipeline and then dispersed to a large sleeve through a dispersing spray plate; meanwhile, the collector is atomized by the collector atomizing unit and is input into the large sleeve, and the foaming agent is atomized by the foaming agent atomizing unit and is input into the large sleeve; the atomized collecting agent and the atomized foaming agent are mixed with the slurry in the large sleeve;

step two: the slurry, the atomized collector and the atomized foaming agent sequentially enter the flotation machine body through the large sleeve and the underflow box;

step three: starting a stirring power unit, and rotating an impeller to stir slurry in the flotation machine body; simultaneously, external air sequentially enters the large sleeve through the air suction control valve and the air suction pipe, enters the slurry circulation chamber through the large sleeve, and is discharged through the air outlet channel;

the slurry in the flotation machine body, the atomized collector, the atomized foamer and the air discharged from the air outlet channel are mixed, and the bubbles are bonded with the minerals in the slurry to form foam.

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