CN113369024A - Coal slime grading and sorting assembly and system thereof - Google Patents

Coal slime grading and sorting assembly and system thereof Download PDF

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Publication number
CN113369024A
CN113369024A CN202110609630.9A CN202110609630A CN113369024A CN 113369024 A CN113369024 A CN 113369024A CN 202110609630 A CN202110609630 A CN 202110609630A CN 113369024 A CN113369024 A CN 113369024A
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China
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grading
filter screen
sorting
filter
coal slime
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CN202110609630.9A
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CN113369024B (en
Inventor
周伟
李亮
汪玲玲
李建波
王淑杰
刘亮亮
朱金波
闵凡飞
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Anhui University of Science and Technology
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Anhui University of Science and Technology
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
    • B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
    • B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
    • B01D33/0353—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements self-supporting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
    • B01D33/41—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/801—Driving means, shaft packing systems or the like
    • 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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • 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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/145—Feed mechanisms for reagents
    • 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
    • B03D1/1443—Feed or discharge mechanisms for flotation tanks
    • B03D1/1462—Discharge mechanisms for the froth

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

The invention discloses a coal slime grading and sorting assembly and a system thereof, which comprise a grading and sorting shell, wherein a screening feeding port is formed in the grading and sorting shell, at least one group of filtering modules is arranged in the grading and sorting shell from top to bottom, and the group of filtering modules comprises at least two layers of filtering screens; each group of filtering modules comprises a tail end filtering sieve positioned at the lowest layer and an upper filtering sieve positioned above the tail end filtering sieve; the screen surfaces of two adjacent layers of filter screens form an included angle with an upward opening, and a discharge port of an upper layer of filter screen of the adjacent screen meshes is connected with a feed port of a lower layer of filter screen; the lower surface of the upper filter screen is connected with an inlet of a bridging funnel for receiving fine particles passing through the filter screen, and an outlet of the bridging funnel penetrates through the tail end filter screen of the current filter module. The bridging funnel's connected mode, the fine grain granule that upper filter sieve will pass through after filtering is directly carried to the below of lower floor's filter sieve, exports to filterable efficiency has been increased.

Description

Coal slime grading and sorting assembly and system thereof
Technical Field
The invention relates to the field of column type stirring flotation machines and fine-grained coal slime grading and screening equipment for coal slime water treatment, in particular to a coal slime grading and sorting assembly and a system thereof.
Background
The invention is based on the fact that a large amount of experimental samples are treated in an experiment, obviously has insufficient capability for an XFD single-groove flotation machine commonly used in a laboratory, not only can not achieve the accuracy of each batch of experimental data, but also takes time and labor, and wastes a large amount of medicaments and water resources. The treatment of the slime water after the slime flotation is quite complex, fine slime is difficultly filtered from the slime water in a grading way, and the size of the slime water is larger than 0.5mm through one-time grading separation without drying; 0.25 mm-0.5 mm; 0.125 mm-0.25 mm; 0.075 mm-0.125 mm; 0.045 mm-0.075 mm; and fine-grained coal slime particles with different grades and the grades of less than 0.045mm, the traditional dry method for treating the coal slime water containing viscous mineral substances is to flocculate and precipitate the fine-grained coal slime particles firstly, then dry the fine-grained coal slime particles, and then screen the fine-grained coal slime particles step by using a screen set after drying, the dry method treatment time is long, the task is heavy, the labor and the time are wasted, and no wet method is used for directly grading and separating out the fine-grained particles at present.
Disclosure of Invention
The invention aims to provide a coal slime grading and sorting assembly and a system thereof, which are used for solving the problems of long dry processing time, heavy task, trouble and labor waste in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a coal slime grading and sorting assembly comprises a grading and sorting shell, wherein a screening feeding port is formed in the grading and sorting shell, at least one group of filtering modules is arranged in the grading and sorting shell from top to bottom, and the group of filtering modules comprises at least two layers of filtering screens; each group of filtering modules comprises a tail end filtering sieve positioned at the lowest layer and an upper filtering sieve positioned above the tail end filtering sieve; the screen surfaces of two adjacent layers of filter screens form an included angle with an upward opening, and a discharge port of an upper layer of filter screen of the adjacent screen meshes is connected with a feed port of a lower layer of filter screen; the lower surface of the upper filter screen is connected with a bridging funnel inlet for receiving fine particles passing through the filter screen, and an outlet of the bridging funnel penetrates through the tail end filter screen of the current filter module; a material collecting opening is formed in the position, above the lowermost end of each group of the lowermost filter screens, of the grading and sorting shell; the lowest end of the grading and sorting shell is provided with a material collecting opening.
As a still further scheme of the invention: the pore size of each layer of filter screen in the group of filter modules is the same.
As a still further scheme of the invention: a first filter sieve, a second filter sieve, a third filter sieve, a fourth filter sieve and a fifth filter sieve are sequentially arranged in the grading and sorting shell from top to bottom, and a first-stage material collecting port, a second-stage material collecting port, a third-stage material collecting port, a fourth-stage material collecting port and a fifth-stage material collecting port are sequentially formed in the grading and sorting shell from top to bottom at the position of the side wall of the lowest end of each stage of filter sieve; the fourth filter screen comprises a first fourth filter screen and a second fourth filter screen, and the first fourth filter screen and the second fourth filter screen form a group of filter modules; the fifth filter screen comprises a first fifth filter screen and a second fifth filter screen, and the first fifth filter screen and the second fifth filter screen form a group of filter modules; the lowest end of the grading and sorting shell is provided with a six-grade material collecting opening. As a still further scheme of the invention: vibration motors are symmetrically arranged on two side walls of the grading and sorting shell, and the rotation directions of the vibration motors are opposite; the bottom of the grading sorting shell is connected with a base, and a damping spring is arranged between the stacking sorting main body and the base; the inclination angle of each layer of filter screen is three degrees.
A system for coal slime grading and sorting components comprises: the flotation machine comprises a flotation machine main body and a slurry tank arranged on the outer side of the flotation machine main body, wherein the output end of the slurry tank is connected inside the flotation machine main body through a feeding guide pipe, the feeding guide pipe positioned inside the flotation machine main body is upwards connected with a feeding stirring area, an opening of the feeding stirring area is upwards and is provided with a constant triangular rotor above, the constant triangular rotor completely covers the feeding stirring area, the constant triangular rotor comprises a rotor shaft and a rotor impeller arranged at the lowest end of the rotor shaft, the rotor impeller is of a double-layer umbrella-shaped structure, a cover plate is arranged between the rotor impeller and the feeding stirring area, circulation holes are formed in the cover plate, and the direction of each circulation hole is horizontally arranged; a stirring rotor mechanism for driving the rotor shaft to rotate is arranged above the rotor shaft; the side wall of the flotation machine main body is provided with a rotary foam scraping device for scraping clean coal foam; the bottom of the main body of the flotation machine is connected with a coal slime grading and sorting component for grading and sorting coal slime water, and the coal slime water is conveyed into the coal slime grading and sorting component after the main body of the flotation machine is floated; a sensor is arranged in the main body of the flotation machine, and the sensor and the foam scraping liquid level of the rotary foam scraping device are located on the same horizontal plane.
As a still further scheme of the invention: the stirring rotor mechanism comprises a driving motor, the output end of the driving motor is connected with a bevel gear, the bevel gear is connected with a driving shaft downwards, and the driving shaft drives a rotor shaft to rotate.
As a still further scheme of the invention: the top of flotation machine main part still is including being used for the inside medicine mechanism that adds of flotation machine main part, and medicine mechanism includes the medicament groove, and the lateral wall in medicament groove is connected with adds medicine valve one, adds medicine valve and is connected with accurate graduated flask outward, and accurate graduated flask is connected with downwards and adds medicine valve two, and the output of adding medicine valve two stretches into to the flotation machine main part in.
As a still further scheme of the invention: the top of flotation device main part is still including being used for the inside moisturizing mechanism of flotation device main part, and moisturizing mechanism includes the moisturizing groove, and the lateral wall in moisturizing groove installs the moisturizing valve, and the moisturizing valve is connected with the water pipe that adds, and the water pipe that adds stretches into to the flotation device main part in.
As a still further scheme of the invention: the flotation machine comprises a flotation machine main body, a coal slime grading separation component, a stirring barrel, a stirring impeller and a water pump, wherein the stirring barrel is connected between the flotation machine main body and the coal slime grading separation component, the coal slime stirring is conveyed into the stirring barrel after the flotation of the flotation machine main body, the output end of the stirring barrel is connected with the coal slime grading separation component, and the stirring barrel is internally provided with the stirring impeller.
Compared with the prior art, the invention has the beneficial effects that:
1. the advantage of this bridging funnel connection is that the filtering of fine particles from top to bottom one layer is avoided by connecting a bridging funnel to the lower surface of the filter screen above the bottommost filter screen of a group of filter modules, the outlet of the bridging funnel penetrating the bottommost filter screen. The filtering mode of one layer and one layer has the problem that fine particles are necessarily filtered from the filtering screen at the lowest layer, and the fine particles are accumulated on the filtering screen at the lowest layer to cause the accumulation of the fine particles, so that the filtering efficiency of the fine particles is reduced.
The bridging funnel's connected mode makes in a set of filtration module, and the fine grain granule that upper filter sieve will pass through after filtering is directly carried to the below of lower floor's filter sieve, exports to great increase filterable efficiency.
And when the filtering efficiency is ensured, a group of filtering modules are arranged into a continuous channel in a vertical wavy line shape, so that fine particles are shunted in a limited space, the mode that the fine particles are filtered from one layer of filtering screen is changed into the mode that the fine particles are filtered from different layers of filtering screens, and the filtering efficiency is improved.
2. The method comprises the following steps that a first filter screen, a second filter screen, a third filter screen, a fourth filter screen and a fifth filter screen are arranged specifically, a first-level material collecting port, a second-level material collecting port, a third-level material collecting port, a fourth-level material collecting port and a fifth-level material collecting port are correspondingly formed in the side wall of a grading and sorting shell, the fourth filter screen comprises a fourth filter screen I and a fourth filter screen II according to different filtering precisions, and the fourth filter screen I and the fourth filter screen II form a group of filter modules; the fifth filter screen comprises a first fifth filter screen and a second fifth filter screen, and the first fifth filter screen and the second fifth filter screen form a group of filter modules; the lowest end of the grading and sorting shell is provided with a six-grade material collecting opening.
The first filter sieve, the second filter sieve and the third filter sieve realize coarse filtration of fine particles, the fourth filter sieve and the fifth filter sieve realize fine filtration of the fine particles, the fourth filter sieve and the fifth filter sieve are set into a group of filter modules, the fine particles are divided by the upper-layer and lower-layer filter structures, and a bridging funnel is arranged between the upper layer and the lower layer, so that the fine particles are ensured to have the advantage of high filter efficiency while being divided.
3. The vibrating motors are symmetrically arranged on two side walls of the grading sorting shell, and the rotating directions of the vibrating motors are opposite; when the two motors run synchronously, the screening device generates linear vibration to continuously overturn and loosen the material, so that the screening device has the advantages of preventing screen holes from being blocked, being high in screening efficiency, adjustable in processing capacity and the like.
4. The flotation mechanism is composed of the flotation machine main body, the rotary bubble scraping device is arranged in the flotation machine main body, and the output end of the flotation machine main body is connected with the grading separation assembly. The rotary foam scraping device scrapes clean coal foam, and the flotation machine body conveys coal slime water into the coal slime grading and sorting assembly after flotation. The equal triangular rotor action range of the flotation machine completely covers the stirring area, so that ore pulp is stirred more fully, and the flotation efficiency is improved. The flotation mechanism is connected with the grading and sorting assembly, and the grading and sorting process is carried out after the flotation process is finished; the working efficiency is improved, and the labor is saved.
5. The flotation main body is provided with a dosing mechanism and a water supplementing mechanism. In the chemical adding mechanism, a chemical tank is positioned above the middle of the flotation machine and is a cylindrical box with better sealing performance, in order to prevent evaporation and leakage of the chemical, an accurate measuring cylinder and an accurate control valve are connected beside the chemical tank, and a chemical adding conduit is directly communicated with a flotation center; so that the reagent can be fully contacted with the coal slurry, and the flotation effect is improved.
In the water replenishing mechanism, the water tank is positioned above the left side of the flotation machine and used for balancing the gravity center of the right motor, so that the whole flotation machine is compact in structure, the gravity center of the whole device is reduced, and the use of additional building area is reduced. The continuous foam scraping link is realized by adding fresh water through control.
A stirring barrel used for stirring the coal slime water is connected between the main body of the flotation machine and the coal slime grading and sorting assembly, the coal slime water after flotation enters the coal slime water stirring barrel to be well paved for the grading flotation and the filtration later, so that the coal slime water is not easy to agglomerate and accumulate when entering the screening and stacking screen, and the difficulty brought to the next step is prevented.
Drawings
FIG. 1 is a schematic structural diagram of a coal slime grading and sorting assembly and a system thereof.
FIG. 2 is a schematic structural diagram of a coal slime grading and sorting assembly and a coal slime grading and sorting device in the system.
FIG. 3 is a schematic structural diagram of a coal slime classifying and sorting assembly and three layers of filter screens in the system.
FIG. 4 is a schematic structural diagram of a coal slime classifying and sorting assembly and four layers of filter screens in the system.
FIG. 5 is a schematic structural diagram of a coal slurry grading and sorting assembly and a coal slurry co-sorting device in the system.
FIG. 6 is a schematic structural diagram of a coal slime grading and sorting assembly and a dosing and water supplementing mechanism in the system.
FIG. 7 is a schematic structural view of a coal slime classifying and sorting assembly and a stirring rotor mechanism in the system.
FIG. 8 is a schematic structural diagram of a coal slime classifying and sorting assembly and a rotary foam scraping mechanism in the system.
In the figure: 1. a drive motor; 2. rotating the foam scraping device; 3. a concentrate scraping and soaking tank; 4. a slurry tank; 5. a feeding valve; 6. a feeding conduit; 7. a bevel gear; 8. a precision measuring cylinder; 9. a medicament tank; 10. a water replenishing tank; 11. a first dosing valve; 12. a water adding valve; 13. a water adding conduit; 14. a sensor; 15. a baffle plate; 16. a cover plate; 17. a feeding and stirring area; 18. a rotor shaft; 19. a second dosing valve; 20. a discharge valve; 21. a stirring barrel; 22. a stirring impeller; 23. screening a feeding port; 24. a first filter sieve; 25. a second filter sieve; 26. a third filter sieve; 27. a fourth filter screen I; 28. a second filter screen; 29. a fifth filter screen I; 30. a fifth filter screen II; 31. a first-level material collection port; 32. a secondary material collection port; 33. a third-level material collecting port; 34. bridging the first funnel; 35. a fourth-stage material collecting port; 36. a second bridging funnel; 37. a vibration motor; 38. a damping spring; 39. a base; 40. a five-level material collection port; 41. a six-level material collecting port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if there is a directional indication (such as up, down, left, right, front, and back) in the embodiment of the present invention, it is only used to explain the relative position relationship between the components, the motion situation, and the like in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if the description of "first", "second", etc. is referred to in the present invention, it is used for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, in the embodiment of the invention, a coal slime classifying and sorting assembly comprises a classifying and sorting main body, wherein a screening feeding port 23 is formed in the upper bottom surface of the classifying and sorting main body, a first filter screen 24, a second filter screen 25, a third filter screen 26, a fourth filter screen and a fifth filter screen are sequentially arranged in the classifying and sorting main body from top to bottom, and a first-stage material collecting port 31, a second-stage material collecting port 32, a third-stage material collecting port 33, a fourth-stage material collecting port 35 and a fifth-stage material collecting port 40 are sequentially formed in the classifying and sorting shell at the position of the side wall at the lowest end of each stage of filter screen from top to bottom;
the fourth filter screen comprises a first fourth filter screen 27 and a second fourth filter screen 28, the first fourth filter screen 27 and the second fourth filter screen 28 form a group of filter modules, the first fourth filter screen 27 and the second fourth filter screen 28 are obliquely arranged, the lowermost end of the first fourth filter screen 27 corresponds to the uppermost end of the second fourth filter screen 28, the lower surface of the first fourth filter screen 27 is connected with a first bridging funnel 34, and the outlet of the first bridging funnel 34 penetrates through the second fourth filter screen 28; the fifth filter screen comprises a first fifth filter screen 29 and a second fifth filter screen 30, and the first fifth filter screen 29 and the second fifth filter screen 30 form a group of filter modules; the lowest end of the grading and sorting shell is provided with a six-grade material collecting port 41, the first fifth filter screen 29 and the second fifth filter screen 30 are obliquely arranged, the lowest end of the first fifth filter screen 29 corresponds to the uppermost end of the second fifth filter screen 30, the lower surface of the first fifth filter screen 29 is connected with a second bridging funnel 36, and an outlet of the second bridging funnel 36 penetrates through the second fifth filter screen 30;
the two side walls of the grading and sorting shell are symmetrically provided with vibrating motors 37, and the rotating directions of the vibrating motors 37 are opposite; the bottom of the grading and sorting shell is connected with a base 39, and a damping spring 38 is arranged between the stacking and sorting body and the base 39; the specific inclination angle of each layer of filter screen is not limited, and in this embodiment, preferably, the inclination angle of each layer of filter screen is three degrees.
The specific precision of each layer of filter sieve is not limited, in this embodiment, preferably, the screening precision of the first filter sieve 24, the second filter sieve 25, the third filter sieve 26, the fourth filter sieve and the fifth filter sieve is respectively 0.5mm filter sieve, 0.25mm filter sieve, 0.125mm filter sieve, 0.075mm filter sieve and 0.045mm filter sieve;
the working principle of the embodiment is as follows: the slime water falls down from the screening feeding port 23 and falls on the first filter screen 24 with the inclination angle of 3 degrees and the size of 0.5mm, and the gravity of the coal particles and the exciting force generated by the external vibration motor 37 enable the coal particles with the size larger than 0.5mm to be sorted out from the primary material collecting port 31 corresponding to the first filter screen 24. While the particles of the grade less than 0.5mm enter the second filter sieve 25 with the inclination angle of 3 degrees and the particles of 0.25 mm-0.5 mm are separated from the secondary material collecting port 32 corresponding to the second filter sieve 25, and when the coal particles less than 0.25mm enter the third filter sieve 26 with the inclination angle of 3 degrees, the particles of 0.075 mm-0.25 mm are separated from the tertiary material collecting port 33 corresponding to the third filter sieve 26. Considering the fineness degree of coal particles, a two-section filter sieve is designed for the filter sieve with 0.075mm, the fourth filter sieve with the precision of 0.075mm is subjected to fine filtration of the coal particles through strong exciting force, fine particles screened by the first fourth filter sieve 27 directly fall into the fifth filter layer through the first bridging funnel 34, accumulation of the fine particles is avoided, and the screening efficiency is improved through a direct downward channel. The same 0.045 mm-level particles are used for realizing accurate screening of coal particles and more sufficient screening, the fifth filter screen also adopts two sections of screens, namely a first filter screen 29 and a second filter screen 30, so that the screening accuracy is increased, and the screening quality is improved. The device can separate more than 0.5mm from the coal sample at one time; 0.25 mm-0.5 mm; 0.125 mm-0.25 mm; 0.075 mm-0.125 mm; 0.045 mm-0.075 mm; and the fine-grained coal slime with different grades and the grade less than 0.045mm, the production efficiency and the economic benefit are improved, the production cost and the production energy are saved, the working efficiency is improved, the labor is saved, and the liberation of the labor force is realized.
Example 2
Referring to fig. 3 to 4, in the present embodiment, a further improvement is performed on the basis of embodiment 1, in fig. 3, three layers of filter screens are arranged, the three layers of filter screens are all arranged obliquely, and an S-shaped continuous channel is formed on the upper surfaces of the three layers of filter screens; the lower surfaces of the filter sieves on the first layer and the second layer are connected with bridging funnels, and outlets of the bridging funnels penetrate through the filter sieves on the lowest layer;
in FIG. 4, four layers of filter sieves are arranged, the four layers of filter sieves are all obliquely arranged, and a continuous channel in a vertical wave shape is formed on the upper surfaces of the four layers of filter sieves; the lower surfaces of the filter sieves on the first layer, the second layer and the third layer are all connected with bridging funnels, and outlets of the bridging funnels penetrate through the filter sieves on the lowest layer;
this example is summarized as follows: the multiple layers of filter screens form a group of filter modules, wherein one group of filter modules comprises at least two layers of filter screens, and each group of filter modules comprises a tail end filter screen positioned at the lowest layer and an upper filter screen positioned above the tail end filter screen; the screen surfaces of two adjacent layers of filter screens form an included angle with an upward opening, and a discharge port of an upper layer of filter screen of the adjacent screen meshes is connected with a feed port of a lower layer of filter screen; the lower surface of the upper filter screen is connected with an inlet of a bridging funnel for receiving fine particles passing through the filter screen, and an outlet of the bridging funnel penetrates through the tail end filter screen of the current filter module.
The bridging funnels are connected in a mode that in one group of filtering modules, the upper filtering screen directly conveys the fine particles passing through to the lower part of the lowest filtering screen after filtering, and the filtering work of the output or the next filtering module is carried out; thereby greatly increasing the efficiency of filtration.
And when the filtering efficiency is ensured, a group of filtering modules are arranged into a vertical wave-line-shaped continuous channel, so that fine particles are shunted in a limited space, the mode that the fine particles are filtered from one layer of filtering screen is changed into the mode that the fine particles are filtered from different layers of filtering screens, and the filtering efficiency is improved.
Example 3
Please refer to fig. 5 to 8 and fig. 1, which includes the coal slime sorting and classifying components in embodiments 1 and 2, and further includes a flotation machine main body and a slurry tank 4 disposed outside the flotation machine main body, an output end of the slurry tank 4 is connected to an inside of the flotation machine main body through a feeding conduit 6, the feeding conduit 6 located inside the flotation machine main body is upwardly connected with a feeding stirring area 17, an equal triangular rotor is disposed above and above an opening of the feeding stirring area 17, the equal triangular rotor completely covers the feeding stirring area 17, the equal triangular rotor includes a rotor shaft 18 and a rotor impeller disposed at a lowest end of the rotor shaft 18, the rotor impeller is a double-layer umbrella-shaped structure, a cover plate 16 is disposed between the rotor impeller and the feeding stirring area 17, the cover plate 16 is provided with circulation holes, and directions of the circulation holes are horizontally disposed; a stirring rotor mechanism for driving the rotor shaft 18 to rotate is arranged above the rotor shaft 18;
a rotary foam scraping device 2 for scraping clean coal foam is arranged on the side wall of the flotation machine main body, and a concentrate foam scraping groove 3 is arranged below the rotary foam scraping device 2; a stirring barrel 21 for stirring slime water is connected between the main body of the flotation machine and the slime grading and sorting component, the slime water is conveyed into the stirring barrel 21 after the main body of the flotation machine is floated, the output end of the stirring barrel 21 is connected with the slime grading and sorting component, and a stirring impeller 22 is arranged in the stirring barrel 21; a sensor 14 is arranged in the flotation machine body, a baffle 15 is arranged below the sensor 14, and the sensor 14 and the froth scraping liquid level of the rotary froth scraping device 2 are positioned on the same horizontal plane.
The stirring rotor mechanism comprises a driving motor 1, the output end of the driving motor 1 is connected with a bevel gear 7, the bevel gear 7 is connected with a driving shaft downwards, and the driving shaft drives a rotor shaft 18 to rotate.
The top of flotation device main part is still including being used for the inside medicine mechanism that adds of flotation device main part, and medicine mechanism includes medicament groove 9, and the lateral wall of medicament groove 9 is connected with adds medicine valve 11, adds medicine valve 11 and outwards is connected with accurate graduated flask 8, and accurate graduated flask 8 is connected with two 19 of medicine valves downwards, and the output that adds medicine valve two 19 stretches into to the flotation device main part in. The reagent tank 9 is positioned above the middle of the flotation machine and is a cylindrical box body with better sealing performance, in order to prevent the reagent from evaporating and leaking, a precise measuring cylinder 8 and a first dosing valve 11 are connected beside the reagent tank 9, and a dosing guide pipe is directly communicated with the flotation center, so that the reagent can be fully contacted with coal slurry, and the flotation effect is improved.
The top of flotation device main part still includes the inside moisturizing mechanism that is used for the flotation device main part, and moisturizing mechanism includes moisturizing groove 10, and water adding valve 12 is installed to the lateral wall in moisturizing groove 10, and water adding valve 12 is connected with the pipe 13 that adds water, and the pipe 13 that adds water stretches into to the flotation device main part in. The water supplementing groove 10 is located at the upper left of the flotation machine and used for balancing the gravity center of the right vibration motor 37, so that the whole flotation machine is compact in structure, the gravity center of the whole device is reduced, the use of additional building area is reduced, and the continuous bubble scraping link is realized by supplementing clean water through control.
The working principle of the embodiment is as follows: during the flotation operation, the control system opens the feeding valve 5 of the conduit of the pulp tank 4, closes the discharging valve 20, the gravitational potential energy presses the pulp in the pulp tank 4 with high liquid level difference into the stirring center of the flotation machine, the sensor 14 senses the rise of the liquid level, at the moment, an output signal is sent to the control system, so that an instruction is sent to enable the stirring rotor mechanism to work, meanwhile, the dosing mechanism receives an instruction, the optimal reagent ratio is calculated and simulated according to the analysis and research of data, the flotation reagent is pumped out, and during the stirring process, the dosing mechanism is adopted to realize the automatic reagent addition on the basis of detecting the pulp reagent amount and calculating the reagent shortage. According to data and experimental result analysis, after stirring for a period of time, the rotary foam scraper 2 rotates to collect the concentrate. Along with the water loss liquid level decline of scraping the bubble task and carrying out, the decline of liquid level is gathered to top sensor 14 and is sent out instruction moisturizing mechanism and add water work for the flotation device accomplishes the concentrate collection that lasts, and after the flotation work was accomplished, open discharge valve 20 immediately and emit the tailing, carry out the flotation task of next batch.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A coal slime grading and sorting assembly comprises a grading and sorting shell, wherein a screening feeding port (23) is formed in the grading and sorting shell, and the coal slime grading and sorting assembly is characterized in that at least one group of filtering modules are arranged in the grading and sorting shell from top to bottom, and each group of filtering modules comprises at least two layers of filtering sieves; each group of filtering modules comprises a tail end filtering sieve positioned at the lowest layer and an upper filtering sieve positioned above the tail end filtering sieve; the screen surfaces of two adjacent layers of filter screens form an included angle with an upward opening, and a discharge port of an upper layer of filter screen of the adjacent screen meshes is connected with a feed port of a lower layer of filter screen;
the lower surface of the upper filter screen is connected with a bridging funnel inlet for receiving fine particles passing through the filter screen, and an outlet of the bridging funnel penetrates through the tail end filter screen of the current filter module;
a material collecting opening is formed in the position, above the lowermost end of each group of the lowermost filter screens, of the grading and sorting shell; the lowest end of the grading and sorting shell is provided with a material collecting opening.
2. The coal slurry classifying and sorting assembly according to claim 1, wherein the pore size of each layer of filter screen in the set of filter modules is the same.
3. The coal slime grading and sorting assembly according to claim 1, wherein a first filter sieve (24), a second filter sieve (25), a third filter sieve (26), a fourth filter sieve and a fifth filter sieve are sequentially arranged in the grading and sorting shell from top to bottom, and a first-stage material collecting port (31), a second-stage material collecting port (32), a third-stage material collecting port (33), a fourth-stage material collecting port (35) and a fifth-stage material collecting port (40) are sequentially formed in the grading and sorting shell from top to bottom at the positions of the side walls of the lowest ends of the various stages of filter sieves;
the fourth filter screen comprises a first fourth filter screen (27) and a second fourth filter screen (28), and the first fourth filter screen (27) and the second fourth filter screen (28) form a group of filter modules; the fifth filter screen comprises a first fifth filter screen (29) and a second fifth filter screen (30), and the first fifth filter screen (29) and the second fifth filter screen (30) form a group of filter modules; the lowest end of the grading and sorting shell is provided with a six-grade material collecting opening (41).
4. The coal slime grading and sorting assembly according to claim 3, wherein the two side walls of the grading and sorting shell are symmetrically provided with vibrating motors (37), and the rotating directions of the vibrating motors (37) are opposite; the bottom of the grading and sorting shell is connected with a base (39), and a damping spring (38) is arranged between the stacking and sorting body and the base (39); the inclination angle of each layer of filter screen is three degrees.
5. A system comprising the coal slurry classifying and sorting assembly according to any one of claims 1 to 4, the flotation machine is characterized by further comprising a flotation machine main body and a slurry tank (4) arranged on the outer side of the flotation machine main body, wherein the output end of the slurry tank (4) is connected inside the flotation machine main body through a feeding guide pipe (6), the feeding guide pipe (6) positioned inside the flotation machine main body is upwards connected with a feeding stirring area (17), an equal triangular rotor is arranged above and upwards from an opening of the feeding stirring area (17), the equal triangular rotor completely covers the feeding stirring area (17), the equal triangular rotor comprises a rotor shaft (18) and a rotor impeller arranged at the lowest end of the rotor shaft (18), the rotor impeller is of a double-layer umbrella-shaped structure, a cover plate (16) is arranged between the rotor impeller and the feeding stirring area (17), circulation holes are formed in the cover plate (16), and the directions of the circulation holes are horizontally arranged; a stirring rotor mechanism for driving the rotor shaft (18) to rotate is arranged above the rotor shaft (18);
6. the system of the coal slime grading and sorting assembly according to claim 5, characterized in that the side wall of the flotation machine body is provided with a rotary foam scraper (2) for scraping clean coal foam; the bottom of the main body of the flotation machine is connected with a coal slime grading and sorting component for grading and sorting coal slime water, and the coal slime water is conveyed into the coal slime grading and sorting component after the main body of the flotation machine is floated; a sensor (14) is arranged in the flotation machine main body, and the sensor (14) and the foam scraping liquid level of the rotary foam scraping device (2) are positioned on the same horizontal plane.
7. The system for classifying and sorting components according to the coal slime of claim 5, wherein the stirring rotor mechanism comprises a driving motor (1), a bevel gear (7) is connected to the output end of the driving motor (1), a driving shaft is connected to the bevel gear (7) downwards, and the driving shaft drives a rotor shaft (18) to rotate.
8. The system for the coal slime grading and sorting assembly according to claim 5, wherein a dosing mechanism used inside the main body of the flotation machine is further arranged above the main body of the flotation machine, the dosing mechanism comprises a chemical tank (9), a first dosing valve (11) is connected to the side wall of the chemical tank (9), a precise measuring cylinder (8) is connected to the first dosing valve (11) outwards, a second dosing valve (19) is connected to the precise measuring cylinder (8) downwards, and the output end of the second dosing valve (19) extends into the main body of the flotation machine.
9. The system for classifying and sorting the coal slime according to claim 5, wherein a water supplementing mechanism used in the flotation machine main body is further arranged above the flotation machine main body, the water supplementing mechanism comprises a water supplementing groove (10), a water supplementing valve (12) is installed on the side wall of the water supplementing groove (10), the water supplementing valve (12) is connected with a water adding water pipe (13), and the water adding water pipe (13) extends into the flotation machine main body.
10. The system for classifying and sorting the coal slime according to claim 6, wherein a stirring barrel (21) for stirring the coal slime water is connected between the main body of the flotation machine and the coal slime classifying and sorting assembly, the coal slime water is conveyed into the stirring barrel (21) after the main body of the flotation machine performs flotation, the output end of the stirring barrel (21) is connected with the coal slime classifying and sorting assembly, and a stirring impeller (22) is arranged in the stirring barrel (21).
CN202110609630.9A 2021-06-01 2021-06-01 Coal slime grading and sorting assembly and system thereof Active CN113369024B (en)

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