CN109513529B - Vertical ore pulp surface modifying machine - Google Patents
Vertical ore pulp surface modifying machine Download PDFInfo
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- CN109513529B CN109513529B CN201811642702.4A CN201811642702A CN109513529B CN 109513529 B CN109513529 B CN 109513529B CN 201811642702 A CN201811642702 A CN 201811642702A CN 109513529 B CN109513529 B CN 109513529B
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- 238000003756 stirring Methods 0.000 claims abstract description 149
- 230000005540 biological transmission Effects 0.000 claims description 4
- 241000282326 Felis catus Species 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 36
- 239000002245 particle Substances 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 21
- 239000003814 drug Substances 0.000 abstract description 17
- 238000010008 shearing Methods 0.000 abstract description 13
- 238000005188 flotation Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 241000555745 Sciuridae Species 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/16—Flotation machines with impellers; Subaeration machines
Abstract
The invention relates to a vertical ore pulp surface modifying machine, which is characterized in that: comprises a base, a cylinder body, an operation platform, a power device, a stirring and dosing device and an air suction impeller; the cylinder body comprises an ore pulp mixing cylinder positioned at the upper part and a crushing and stirring cylinder positioned at the lower part of the ore pulp mixing cylinder body; the stirring and dosing device comprises a power shaft, a stirring shaft, a multistage stirring impeller, a stator connecting sleeve and a dosing pipe, wherein a stator is arranged at the lower end of the stator connecting sleeve; an air suction impeller is arranged in the stator, the air suction impeller is connected with a power shaft, stirring blades of a final-stage stirring impeller positioned below are inclined at a certain angle with the horizontal plane, and stirring blades of other stirring impellers are arranged vertically with the horizontal plane; a turbulence plate is arranged in the ore pulp stirring cylinder, and an overflow hole is arranged on the turbulence plate; the upper surface of the turbulent flow plate is provided with a diversion cone; a squirrel-cage crushing device is arranged below a final-stage stirring impeller in the ore pulp stirring cylinder. The invention enhances the longitudinal shearing of ore pulp; the shearing and crushing effects on coal slime and gangue particles in ore pulp are improved, and the mixing effect of the medicament is improved.
Description
Technical Field
The invention belongs to the technical field of coal slime flotation equipment, and particularly relates to a vertical ore pulp surface modifying machine.
Background
The main equipment of the pulp pretreatment link of the existing coal slime flotation process comprises a pulp pretreatment device, a pulp preparation device, a powerful stirrer, a surface modifying device and other related equipment. The main working principle of the equipment is to provide the opportunity for the contact of the ore pulp and the medicament, the adopted means is mechanical stirring, when the stirring intensity is high, the medicament and the ore pulp are fully mixed, the power consumption is high, and when the stirring intensity is low, the medicament and the ore pulp can not be fully mixed, so that the aim of pretreatment can not be achieved.
The coal slime surface modification technology is to change the physical, chemical or physical and chemical properties of the surfaces of coal particles with the particle size of-0.5 mm by using a physical or chemical method, so that the aim of being beneficial to separation or processing is fulfilled, the surface hydrophobicity of some coals is poor and floatability is poor due to the reasons of coal formation or occurrence conditions, the surface of some coals is oxidized and deteriorated due to the reasons of coal storage conditions, the surface hydrophobicity of the coals is poor, the floatability is also poor along with the degradation, in the actual production process of a coal preparation plant, if the coal with poor floatability is encountered, the flotation effect is poor, even a mineralized foam layer is not formed in a flotation machine, and finally the whole flotation recovery system is invalid and a large amount of coal slime is discharged. This not only pollutes the environment but also causes great economic loss due to the decrease in the yield of clean coal. Therefore, measures must be taken to change the surface properties of coal with poor floatability, create favorable conditions for flotation recovery, generally change the surface wettability of coal slime particles by using a surface modifying machine, enlarge the difference of the surface wettability between coal and gangue and pyrite particles, and further create favorable conditions for later flotation.
The structure and the working process of the surface modifying machine are as follows: the surface modifying machine is of a horizontal cylindrical structure as a whole, a stirring shaft is arranged on the central line of the cylinder, a plurality of flexible structures are arranged on the stirring shaft, ore pulp and a flotation collector enter from one end of the cylinder, flexible stirring blades are driven by the stirring shaft to be placed at a certain speed, coal slime and gangue particles are rubbed, sheared and stirred, the physical and chemical properties of the surface are changed, hydrophobic and organic functional groups are fully exposed, the hydrophobic and oleophilic properties of the surface of the coal particles are enhanced, and the floatability is improved. Meanwhile, the collector is emulsified, so that the mineralization speed is increased, the consumption of the collector is reduced, and ore pulp subjected to surface modification and collector emulsification is discharged from the other end of the cylinder and then enters a flotation machine for flotation operation.
The existing surface modifying machine has the defects of high power consumption, insufficient mixing of the medicament and the ore pulp and failure in pretreatment.
The vertical ore pulp surface modifying machine is designed for improving the shearing and crushing effects on coal slime and gangue particles in ore pulp and improving the mixing effect of the agent and the ore pulp.
Disclosure of Invention
The invention provides a method for enhancing the longitudinal shearing of ore pulp for solving the technical problems in the prior art; the vertical ore pulp surface modifying machine improves the shearing and crushing effects on coal slime and gangue particles in ore pulp and improves the mixing effect of the agent and the ore pulp.
The invention adopts the technical proposal for solving the technical problems in the prior art that:
a vertical ore pulp surface modifying machine is characterized in that: comprises a base, a cylinder body, an operation platform, a power device, a stirring and dosing device and an air suction impeller;
the cylinder body comprises an ore pulp mixing cylinder positioned at the upper part and a crushing and stirring cylinder positioned at the lower part of the ore pulp mixing cylinder body; an overflow cofferdam is arranged at the upper edge of the ore pulp mixing cylinder, and a discharging pipe is arranged on the lower surface of the overflow cofferdam;
the lower end of the crushing stirring cylinder is fixedly arranged on the base, a feeding hole is formed in the side wall of the lower end of the crushing stirring cylinder, and a feeding box is arranged in the feeding hole in a sealing manner; the side wall of the ore pulp stirring cylinder is also provided with a manhole;
the operation platform is fixedly arranged above the ore pulp mixing cylinder body, a power device is arranged on the upper surface of the operation platform, the power device is connected with the stirring and dosing device through a transmission component, and the central line of the stirring and dosing device is overlapped with the central line of the cylinder body; a cat ladder is arranged between the operation platform and the base;
the stirring and dosing device comprises a bearing seat which is arranged on the upper surface of an operation platform, a power shaft is arranged in the bearing seat through a support bearing, the power shaft is connected with a stirring shaft, and the stirring shaft extends to the lower part of the ore pulp stirring cylinder; the stirring shaft is provided with a multistage stirring impeller along the axial direction; a stator connecting sleeve is fixedly arranged at the lower end of the bearing seat in the ore pulp mixing cylinder at the lower end of the bearing seat, and a stator is arranged at the lower end of the stator connecting sleeve; an air suction impeller is arranged in the stator and is connected with a power shaft, and the power shaft extends out of the air suction impeller and is connected with a stirring shaft through a coupler; an ore pulp mixing space is arranged between the air suction impeller and the inner wall of the stator, a dosing pipe communicated with the inner wall of the stator connecting sleeve is arranged on the upper part of the stator, the upper part of the dosing pipe extends to the upper surface of the operation platform, and a dosing box is arranged on the dosing pipe on the upper surface of the operation platform;
among the multistage stirring impellers arranged on the stirring shaft, stirring blades of the last-stage stirring impeller positioned at the lower end are inclined at a certain angle with the horizontal plane, and stirring blades of the other stirring impellers are arranged vertically with the horizontal plane;
a turbulence plate is arranged in the ore pulp stirring cylinder, and an overflow hole is arranged on the turbulence plate; the center of the turbulent flow plate is provided with a central overflow hole, the upper surface of the turbulent flow plate is provided with a flow guide cone matched with the central overflow hole, and the center line of the flow guide cone is overlapped with the center line of the air suction impeller; the bus of the guide cone inclines towards the direction of the suction impeller; the upper part of the guide cone extends into the stator, and a gap is reserved between the upper surface of the guide cone and the lower surface of the air suction impeller;
a squirrel-cage crushing device is arranged in the ore pulp stirring cylinder;
the feeding box extends into the squirrel-cage crushing device and is positioned below the last-stage stirring impeller at the lower end of the stirring shaft.
The invention can also adopt the following technical measures:
the preferable scheme is that the diameter of the overflow hole of the turbulence plate is 10-30 mm; the hole ratio is 25-50%.
In the above scheme, preferably, the squirrel-cage crushing device comprises an upper flange plate and a lower flange plate, wherein the lower flange plate is fixedly arranged at the bottom of the crushing stirring cylinder through a fastener, and the upper flange plate is connected with the upper part of the crushing stirring cylinder through a connecting piece; a plurality of crushing vertical plates are uniformly distributed between the upper flange plate and the lower flange plate along the circumferential direction, and a plurality of ore pulp flow through grooves are formed in the outer side surfaces of the crushing vertical plates at intervals along the height direction; and the pulp flow through groove and the inner wall of the pulp stirring barrel form a pulp flow through channel.
The preferable scheme is that the depth of the ore pulp flowing through the launder is 20-50 mm; the height of the ore pulp flowing groove is 100-150 mm.
In the scheme, preferably, a gap is reserved between the outer side surface of the crushing vertical plate and the inner wall of the ore pulp stirring cylinder, and the gap value is 10-25 mm.
In the above scheme, preferably, the stirring blade of the last-stage stirring impeller has a certain inclination angle of 15-45 degrees with the horizontal.
The invention has the advantages and positive effects that: due to the adoption of the technical scheme, the method has the following advantages:
1. the multistage stirring impeller is arranged on the stirring shaft, and shears and breaks coal slime and gangue particles in ore pulp in the working process; in order to further enhance the mobility of the ore pulp in the ore pulp stirring cylinder, the sedimentation and accumulation of the ore pulp stirring bottom are avoided; the existing final-stage stirring impeller is optimally designed, specifically, the stirring blades of the final-stage stirring impeller and the horizontal plane form an inclined angle, so that the final-stage stirring impeller has a shearing and crushing function, and the bottom ore pulp is subjected to upward pushing force, the rising speed of the ore pulp is improved, and the mixing efficiency of the ore pulp and the medicament is accelerated; the stirring blade of the stirring impeller at the upper part is in a vertical arrangement state with the horizontal plane; the longitudinal shearing of ore pulp is enhanced; further improving the shearing and crushing effects on the coal slime and gangue particles in the ore pulp.
2. Because the volume of the ore pulp mixing cylinder is larger, and the reagent mixing space of the air suction impeller is relatively smaller, ore pulp and the reagent cannot be mixed fully in time, and part of crushed ore pulp is not mixed fully with the reagent under the condition that the ore pulp is continuously supplied, and the ore pulp which is not mixed fully flows to the overflow cofferdam, so that the mixing effect of the ore pulp and the reagent is reduced, and the later flotation is influenced; because the turbulence plate is additionally arranged, most ore pulp is blocked by the turbulence plate and then moves along the lower surface of the guide plate towards the direction of the guide cone, and most ore pulp is brought into the mixing and stirring space by the air suction impeller through the guide cone to be fully mixed with the medicament under the action of the guide cone, so that the mixing effect of the ore pulp and the medicament is greatly improved.
3. A squirrel-cage crushing device is arranged in the ore pulp stirring cylinder; under the existing condition, the ore pulp is stirred by the stirring impeller and then makes rotational flow movement, part of coal slime and gangue particles in the ore pulp move along with the rotational flow and rub with the inner wall of the ore pulp stirring cylinder and then make spiral rising movement, and as the inner wall of the ore pulp stirring cylinder is smoother, the coal slime and gangue particles do not have shearing and crushing functions, so that the crushing effect of the coal slime and gangue particles in the ore pulp is reduced, the unbroken coal and mud particles still contain clean coal, the ore pulp and the medicament cannot be fully mixed, the later flotation effect is reduced, and the loss of the clean coal is caused; due to the fact that the squirrel-cage crushing device is additionally arranged, the rotational flow track is disturbed, the rotational flow ore pulp collides with the squirrel-cage crushing device again, collided coal and mud particles are rebounded, and collide with forward rotational flow particles and the stirring impeller again in the rebound process, so that the crushing effect is improved, and a foundation is laid for full mixing of later-stage ore pulp and medicaments.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a schematic perspective view of the present invention;
FIG. 4 is a schematic diagram of a squirrel cage breaker;
FIG. 5 is a schematic perspective view of a cage crusher;
FIG. 6 is a schematic view of a connection structure of a turbulence plate and a guide cone.
In the figure: 1. a base; 2. a cylinder; 2-1, a pulp mixing cylinder; 2-2, crushing and stirring barrel; 2-20 parts of a feed inlet; 2-21, a feeding box; 2-22 parts of manhole; 2-3, overflow cofferdam; 2-4, a discharging pipe; 3. an operating platform; 4. a power device; 5. a stirring and dosing device; 5-1, bearing seats; 5-2, a power shaft; 5-3, a stirring shaft; 5-4, stirring impeller; 5-40, a final stage stirring impeller; 5-5, a stator connecting sleeve; 5-6, a stator; 5-7, pulp mixing space; 5-8, a dosing tube; 5-9, a medicine adding box; 6. an air suction impeller; 7. a ladder stand; 8. a turbulence plate; 8-1, an overflow hole; 9. a diversion cone; 10. a squirrel-cage crushing device; 10-1, an upper flange plate; 10-10, mounting grooves; 10-2, a lower flange plate; 10-20, positioning grooves; 10-3, crushing the vertical plates; 10-30, passing ore pulp through a launder; 10-4, L-shaped connecting seat.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:
referring to fig. 1 to 6, a vertical pulp surface modifying machine comprises a base 1, a barrel 2, an operation platform 3, a power device 4, a stirring and dosing device 5 and an air suction impeller 6;
the barrel 2 comprises an ore pulp mixing barrel 2-1 positioned at the upper part and a crushing stirring barrel 2-2 positioned at the lower part of the ore pulp mixing barrel; the upper edge of the ore pulp mixing cylinder is provided with an overflow cofferdam 2-3, and the lower surface of the overflow cofferdam is provided with a discharge pipe 2-4;
the lower end of the crushing stirring cylinder 2-2 is fixedly arranged on the base 1, a feeding hole 2-20 is formed in the side wall of the lower end of the crushing stirring cylinder, and a feeding box 2-21 is arranged in the feeding hole in a sealing manner; the side wall of the ore pulp stirring cylinder is also provided with overhaul holes 2-22;
the operation platform 3 is fixedly arranged above the ore pulp mixing cylinder 2-1, the upper surface of the operation platform is provided with a power device 4, the power device belongs to the known technology and mainly comprises a motor, a transmission belt and a speed reducer, the power device is connected with the stirring and dosing device 5 through a transmission component, and the central line of the stirring and dosing device coincides with the central line of the cylinder; a cat ladder 7 is arranged between the operation platform and the base;
the stirring and dosing device 5 comprises a bearing seat 5-1 arranged on the upper surface of an operation platform, a power shaft 5-2 is arranged in the bearing seat through a support bearing, the power shaft 5-2 is connected with a stirring shaft 5-3, and the stirring shaft extends to the lower part of the ore pulp stirring cylinder; the stirring shaft is provided with a multistage stirring impeller 5-4 along the axial direction; the lower end of the bearing seat is fixedly provided with a stator connecting sleeve 5-5 at the lower end of the bearing seat in the ore pulp mixing cylinder, and the lower end of the stator connecting sleeve is provided with a stator 5-6; an air suction impeller 6 is arranged in the stator and is connected with a power shaft 5-2, and the power shaft extends out of the air suction impeller and is connected with a stirring shaft through a coupler; an ore pulp mixing space 5-7 is arranged between the air suction impeller and the inner wall of the stator, a dosing tube 5-8 communicated with the inner wall of the stator connecting sleeve is arranged on the upper part of the stator, the upper part of the dosing tube extends to the upper surface of the operation platform, and a dosing box 5-9 is arranged on the dosing tube on the upper surface of the operation platform;
among the multistage stirring impellers arranged on the stirring shaft, stirring blades of the last-stage stirring impellers 5-40 positioned at the lower end form a certain inclination angle with the horizontal plane, and stirring blades of the other stirring impellers are arranged vertically with the horizontal plane; the multistage stirring impeller is arranged on the stirring shaft, and shears and breaks coal slime and gangue particles in ore pulp in the working process; in order to further enhance the mobility of the ore pulp in the ore pulp stirring cylinder, the sedimentation and accumulation of the ore pulp stirring bottom are avoided; the existing final-stage stirring impeller is optimally designed, specifically, the stirring blades of the final-stage stirring impeller and the horizontal plane form an inclined angle, so that the final-stage stirring impeller has a shearing and crushing function, and the bottom ore pulp is subjected to upward pushing force, the rising speed of the ore pulp is improved, and the mixing efficiency of the ore pulp and the medicament is accelerated; the stirring blade of the stirring impeller at the upper part is in a vertical arrangement state with the horizontal plane; the longitudinal shearing of ore pulp is enhanced; further improving the shearing and crushing effects on the coal slime and gangue particles in the ore pulp.
A turbulence plate 8 is arranged in the ore pulp stirring cylinder 2-2, and an overflow hole 8-1 is arranged on the turbulence plate; the center of the turbulence plate is provided with a center overflow hole, the upper surface of the turbulence plate is provided with a flow guide cone 9 matched with the center overflow hole, the flow guide cone 9 and the turbulence plate can be connected by adopting a fastener or welded, and the side surface of the flow guide cone is not provided with a hole, so that the flow guide effect is ensured; the central line of the flow guiding standard coincides with the central line of the air suction impeller; the bus of the guide cone inclines towards the direction of the suction impeller; the upper part of the diversion cone stretches into the stator 5-6, a gap is reserved between the upper surface of the diversion cone 9 and the lower surface of the air suction impeller 6, and the high-pressure rotation of the air suction impeller forms a negative pressure area, so that ore pulp is conveyed into an ore pulp mixing space to be fully mixed with the medicament; because the volume of the ore pulp mixing cylinder is larger, and the reagent mixing space of the air suction impeller is relatively smaller, ore pulp and the reagent cannot be mixed fully in time, and part of crushed ore pulp is not mixed fully with the reagent under the condition that the ore pulp is continuously supplied, and the ore pulp which is not mixed fully flows to the overflow cofferdam, so that the mixing effect of the ore pulp and the reagent is reduced, and the later flotation is influenced; because the turbulence plate is additionally arranged, most ore pulp is blocked by the turbulence plate and then moves along the lower surface of the guide plate towards the direction of the guide cone under the condition of ensuring the overflow, and most ore pulp is brought into the mixing and stirring space by the air suction impeller through the guide cone to be fully mixed with the medicament under the action of the guide cone, so that the mixing effect of the ore pulp and the medicament is greatly improved;
a squirrel-cage crushing device 10 is arranged in the ore pulp stirring cylinder; the feed boxes 2-21 extend into the squirrel cage crushing device 10 and are positioned below the last stage stirring impellers 5-40 at the lower end of the stirring shaft.
Under the existing condition, the ore pulp is stirred by the stirring impeller and then makes rotational flow movement, part of coal slime and gangue particles in the ore pulp move along with the rotational flow and rub with the inner wall of the ore pulp stirring cylinder and then make spiral rising movement, and as the inner wall of the ore pulp stirring cylinder is smoother, the coal slime and gangue particles do not have shearing and crushing functions, so that the crushing effect of the coal slime and gangue particles in the ore pulp is reduced, the unbroken coal and mud particles still contain clean coal, the ore pulp and the medicament cannot be fully mixed, the later flotation effect is reduced, and the loss of the clean coal is caused; due to the fact that the squirrel-cage type crushing device is additionally arranged, the rotational flow track is disturbed, so that the rotational flow ore pulp collides with the squirrel-cage type crushing device again, the collided coal and mud particles are rebounded, and collide with the forward rotational flow particles and the stirring impeller again in the rebound process, the crushing effect is further improved, and a foundation is laid for full mixing of the ore pulp and the medicament in the later stage;
preferably, the diameter of the overflow hole of the turbulent flow plate is 10-30 mm; the ratio of the flow through holes is 20-50%, and the diameter and the ratio of the flow through holes are selected according to actual working conditions so as to exert the optimal flow through.
In the above scheme, preferably, the squirrel-cage crushing device 10 includes an upper flange plate 10-1 and a lower flange plate 10-2, the lower flange plate 10-2 is fixedly installed at the bottom of the crushing and stirring cylinder 2-2 through a fastener, and the upper flange plate 10-1 is connected with the upper part of the crushing and stirring cylinder 2-2 through a connecting piece; a plurality of crushing vertical plates 10-3 are uniformly distributed between the upper flange plate and the lower flange plate along the circumferential direction, and a plurality of ore pulp flow through grooves 10-30 are formed in the outer side surfaces of the crushing vertical plates at intervals along the height direction; and the pulp flow through groove and the inner wall of the pulp stirring barrel form a pulp flow through channel. The preferable connection mode is that the outer circumference of the upper flange plate 10-1 is provided with a mounting groove 10-10 along the circumferential direction, an L-shaped connecting seat 10-4 is welded in the pulp stirring cylinder corresponding to the mounting groove, the horizontal section of the L-shaped connecting seat is inserted in the mounting groove, and the horizontal section of the L-shaped connecting seat is provided with a connecting hole; the turbulent flow plate 8 is respectively connected with the upper flange plate and the L-shaped connecting seat through fasteners; the lower flange is also provided with positioning grooves 10-20 for ease of installation, so that the squirrel cage breaker 10 is placed in a shaking manner during stirring by the fixed connection of the turbulence plates.
The preferable scheme is that the depth of the ore pulp flowing through the launder is 20-50 mm; the height of the ore pulp flowing groove is 100-150 mm.
In the scheme, preferably, a gap is reserved between the outer side surface of the crushing vertical plate and the inner wall of the ore pulp stirring cylinder, and the gap value is 10-25 mm. Dead angles are formed between the outer side surfaces of the crushing vertical plates and the ore pulp stirring barrel, ore pulp is accumulated, and the trouble is brought to later cleaning.
In the above scheme, preferably, the stirring blade of the last-stage stirring impeller has a certain inclination angle of 15-45 degrees with the horizontal. And selecting a proper angle according to the actual condition of ore pulp and the matching of the power device so as to ensure the optimal stirring effect.
In conclusion, the invention solves the defects that the traditional ore pulp surface modifying machine agent is fully and unevenly mixed with ore pulp, the power consumption is high, and the aim of pretreatment cannot be achieved when the stirring intensity is low.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present invention are within the scope of the technical solutions of the present invention.
Claims (6)
1. A vertical ore pulp surface modifying machine is characterized in that: comprises a base, a cylinder body, an operation platform, a power device, a stirring and dosing device and an air suction impeller;
the cylinder body comprises an ore pulp mixing cylinder positioned at the upper part and an ore pulp stirring cylinder positioned at the lower part of the ore pulp mixing cylinder body; an overflow cofferdam is arranged at the upper edge of the ore pulp mixing cylinder, and a discharging pipe is arranged on the lower surface of the overflow cofferdam;
the lower end of the ore pulp stirring cylinder is fixedly arranged on the base, a feed inlet is arranged on the side wall of the lower end of the ore pulp stirring cylinder, and a feed box is arranged in the feed inlet in a sealing manner; the side wall of the ore pulp stirring cylinder is also provided with a manhole;
the operation platform is fixedly arranged above the ore pulp mixing cylinder body, a power device is arranged on the upper surface of the operation platform, the power device is connected with the stirring and dosing device through a transmission component, and the central line of the stirring and dosing device is overlapped with the central line of the cylinder body; a cat ladder is arranged between the operation platform and the base;
the stirring and dosing device comprises a bearing seat which is arranged on the upper surface of an operation platform, a power shaft is arranged in the bearing seat through a support bearing, the power shaft is connected with a stirring shaft, and the stirring shaft extends to the lower part of the ore pulp stirring cylinder; the stirring shaft is provided with a multistage stirring impeller along the axial direction; a stator connecting sleeve is fixedly arranged at the lower end of the bearing seat in the ore pulp mixing cylinder at the lower end of the bearing seat, and a stator is arranged at the lower end of the stator connecting sleeve; an air suction impeller is arranged in the stator and is connected with a power shaft, and the power shaft extends out of the air suction impeller and is connected with a stirring shaft through a coupler; an ore pulp mixing space is arranged between the air suction impeller and the inner wall of the stator, a dosing pipe communicated with the inner wall of the stator connecting sleeve is arranged on the upper part of the stator, the upper part of the dosing pipe extends to the upper surface of the operation platform, and a dosing box is arranged on the dosing pipe on the upper surface of the operation platform;
among the multistage stirring impellers arranged on the stirring shaft, stirring blades of the last-stage stirring impeller positioned at the lower end are inclined at a certain angle with the horizontal plane, and stirring blades of the other stirring impellers are arranged vertically with the horizontal plane;
a turbulence plate is arranged in the ore pulp stirring cylinder, and an overflow hole is arranged on the turbulence plate; the center of the turbulent flow plate is provided with a central overflow hole, the upper surface of the turbulent flow plate is provided with a flow guide cone matched with the central overflow hole, and the center line of the flow guide cone is overlapped with the center line of the air suction impeller; the bus of the guide cone inclines towards the direction of the suction impeller; the upper part of the guide cone extends into the stator, and a gap is reserved between the upper surface of the guide cone and the lower surface of the air suction impeller;
a squirrel-cage crushing device is arranged in the ore pulp stirring cylinder;
the feeding box extends into the squirrel-cage crushing device and is positioned below the last-stage stirring impeller at the lower end of the stirring shaft.
2. The vertical pulp surface modifying machine of claim 1, wherein: the diameter of the overflow hole of the turbulent flow plate is 10-30 mm; the hole ratio is 20% -50%.
3. The vertical pulp surface modifying machine of claim 1, wherein: the squirrel-cage crushing device comprises an upper flange plate and a lower flange plate, wherein the lower flange plate is fixedly arranged at the bottom of the ore pulp stirring cylinder through a fastener, and the upper flange plate is connected with the upper part of the ore pulp stirring cylinder through a connecting piece; a plurality of crushing vertical plates are uniformly distributed between the upper flange plate and the lower flange plate along the circumferential direction, and a plurality of ore pulp flow through grooves are formed in the outer side surfaces of the crushing vertical plates at intervals along the height direction; and the pulp flow through groove and the inner wall of the pulp stirring barrel form a pulp flow through channel.
4. A vertical pulp surface modifying machine according to claim 3, wherein: the depth of the ore pulp flowing through the launder is 20-50 mm; the height of the ore pulp flowing groove is 100-150 mm.
5. A vertical pulp surface modifying machine according to claim 3, wherein: and a gap is reserved between the outer side surface of the crushing vertical plate and the inner wall of the ore pulp stirring cylinder, and the gap value is 10-25 mm.
6. The vertical pulp surface modifying machine of claim 1, wherein: and the stirring blade of the final-stage stirring impeller is inclined at a certain angle of 15-45 degrees with the horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642702.4A CN109513529B (en) | 2018-12-29 | 2018-12-29 | Vertical ore pulp surface modifying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642702.4A CN109513529B (en) | 2018-12-29 | 2018-12-29 | Vertical ore pulp surface modifying machine |
Publications (2)
| Publication Number | Publication Date |
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| CN109513529A CN109513529A (en) | 2019-03-26 |
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