CN113070133A - Ore discharge end overflow weir controller capable of improving filling rate of ceramic balls of overflow ball mill - Google Patents
Ore discharge end overflow weir controller capable of improving filling rate of ceramic balls of overflow ball mill Download PDFInfo
- Publication number
- CN113070133A CN113070133A CN202110376594.6A CN202110376594A CN113070133A CN 113070133 A CN113070133 A CN 113070133A CN 202110376594 A CN202110376594 A CN 202110376594A CN 113070133 A CN113070133 A CN 113070133A
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- China
- Prior art keywords
- overflow
- flange
- ball mill
- controller
- overflow weir
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a discharge end overflow weir controller capable of improving the filling rate of ceramic balls of an overflow ball mill, which relates to the technical field of ball mills and comprises a hollow shaft neck, an overflow weir controller and a cylindrical screen; one end of the hollow shaft neck is connected with an end cover at the discharging side of the ball mill, and the overflow weir controller is arranged between the other end of the hollow shaft neck and the cylindrical screen. The discharging of the ceramic balls in the cylinder body of the ball mill is blocked by the overflow weir controller at the ore discharging end, the ore pulp is overflowed through sieve holes on the overflow weir controller, and the loading limit position of the grinding medium of the overflow ball mill is lifted; the reverse spiral blades arranged on the inner wall of the discharge barrel reversely convey ceramic balls entering the discharge barrel along with the overflow of ore pulp into the barrel of the mill, so that the ore grinding medium filling rate of the ball mill is greatly improved.
Description
Technical Field
The invention relates to the technical field of ball mills, in particular to a controller of an overflow weir at a discharge end, which can improve the filling rate of ceramic balls of an overflow ball mill.
Background
The overflow ball mill is a common ore grinding device in an ore grinding workshop of a mine, and the ore discharge principle is that when the surface of ore pulp is higher than a generatrix with the lowest inner diameter of a discharge port, the ore pulp overflows and is discharged out of the mill. The consumption of metal resources is increased, the grade of the metal mine is reduced, and minerals with fine embedded granularity are gradually mined. The fine grinding of minerals by using the overflow ball mill can be realized by changing the filling rate of a grinding medium.
Along with the deepening of the concept of energy conservation and consumption reduction in ore grinding workshops, the ceramic ball ore grinding medium with the specific gravity lighter than that of a steel ball is widely used in mines. When ceramic balls are used as ore grinding media, the overflow ball mill can be operated efficiently only when the filling rate of the overflow ball mill reaches 35% -45%, so that the filling rate of the ore grinding media of the overflow ball mill is urgently needed to be improved under the condition that the structure of the mill allows, and the ore grinding media cannot flow out of a discharge hole along with ore pulp.
Disclosure of Invention
In order to solve the technical problems, the invention provides a discharge end overflow weir controller capable of improving the filling rate of ceramic balls of an overflow ball mill, solves the problem that the ceramic balls of the overflow ball mill are discharged from a hollow shaft neck of a discharge cylinder of the overflow ball mill when the overflow ball mill is shut down in the production process because the ceramic balls have lighter specific gravity than steel balls, and is suitable for the overflow ball mill which needs to obtain finer-grained minerals or has higher production capacity by improving the filling rate of the ceramic balls.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a discharge end overflow weir controller capable of improving the filling rate of ceramic balls of an overflow ball mill, which comprises a hollow shaft neck, an overflow weir controller and a cylindrical screen, wherein the hollow shaft neck is provided with a hollow shaft neck; one end of the hollow shaft neck is connected with an end cover at the discharging side of the ball mill, and the overflow weir controller is arranged between the other end of the hollow shaft neck and the cylindrical screen.
Optionally, the other end of the hollow shaft neck is provided with a connecting flange.
Optionally, the inner wall of the overflow weir controller is provided with a reverse helical blade.
Optionally, a controller port is arranged at one end of the overflow weir controller; a first flange is arranged between the controller port and the hollow shaft neck.
Optionally, one side of the port of the controller, which is far away from the first flange, is provided with a plurality of counter bores, and bolt head rubber plugs are arranged in the counter bores.
Optionally, a second flange is arranged at the seam allowance of the first flange, the first flange and the second flange are coaxially arranged, the first flange and the second flange are connected through a plurality of connecting strips, a plurality of bolt holes are formed in the first flange, and the bolt holes correspond to the counter bores.
Optionally, one side of the first flange facing the hollow journal is provided with an L-shaped rubber protection pad, and the L-shaped rubber protection pad extends from one side of the first flange to a seam allowance of the first flange.
Optionally, a bowl-shaped nut protective sleeve is coaxially arranged between the first flange and the hollow shaft neck and the bolt hole, and a nut rubber plug is arranged in the bowl-shaped nut protective sleeve; a first nut is arranged in the nut rubber plug.
Optionally, the first nut is a type 1 non-metal insert hexagonal lock nut.
Compared with the prior art, the invention has the following technical effects:
on one hand, the ore discharge end overflow weir controller can prevent the ceramic balls in the cylinder of the ball mill from being discharged, and the ore pulp can overflow through the sieve pores on the overflow weir controller, so that the loading limit position of the grinding medium of the overflow ball mill is raised; on the other hand accessible sets up the reverse spiral blade on the play feed cylinder inner wall and will overflow along with the ore pulp and get into the ceramic ball reversal transport in the play feed cylinder to the mill barrel, has improved ball mill grinding medium filling rate greatly.
Through tests, the overflow weir controller at the ore discharging end, which can improve the filling rate of the ceramic balls of the overflow ball mill, is additionally arranged on a 400KW 2736 model overflow ball mill, so that the filling rate of ore grinding media of the ball mill is improved from 30% to 45%, the ore discharging fineness of the ball mill with-0.3 mm iron ore feeding capacity can reach-0.038 mm content accounting for 75%, and better economic benefit is obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an ore discharge end overflow weir controller capable of improving the filling rate of ceramic balls of an overflow ball mill according to the present invention;
FIG. 2 is a schematic structural diagram of a first flange and a second flange in the overflow weir controller at the ore discharging end for improving the filling rate of ceramic balls of the overflow ball mill according to the present invention;
fig. 3 is a schematic structural view of a matched mounting part of an overflow weir controller port and a first flange in an ore discharge end overflow weir controller capable of improving the filling rate of ceramic balls of an overflow ball mill.
Description of reference numerals: 1. a hollow journal; 2. a first flange; 3. an overflow weir controller; 4. a counter-helical blade; 5. a cylindrical screen; 6. screening holes; 7. a second flange; 8. a connecting strip; 301. a controller port; 9. a bowl-shaped nut protective sleeve; 10. a nut rubber plug; 11. a non-metal insert hexagonal lock nut; 12. bolt holes; 13. an L-shaped rubber protection pad; 14. a counter bore; 15. a bolt head rubber plug; 16. and (4) an inner hexagon bolt.
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.
As shown in fig. 1 to 3, the present embodiment provides a discharge end weir controller 3 capable of improving the filling rate of ceramic balls in a overflow type ball mill, comprising a hollow journal 1, a weir controller 3 and a cylindrical screen 5; one end of the hollow shaft neck 1 is connected with an end cover at the discharging side of the ball mill, and the overflow weir controller 3 is arranged between the other end of the hollow shaft neck 1 and the cylindrical screen 5.
In this embodiment, the other end of the hollow shaft journal 1 is provided with a connecting flange.
And the inner wall of the overflow weir controller 3 is provided with a reverse helical blade 4. A controller port 301 is arranged at one end of the overflow weir controller 3; a first flange 1 is arranged between the controller port 301 and the hollow journal 1. One side of the controller port 301, which is far away from the first flange 1, is provided with a plurality of counter bores 14, and bolt head rubber stoppers 15 are arranged in the counter bores 14. The spigot department of first flange 1 is provided with second flange 7, first flange 1 with the coaxial setting of two flanges, just, first flange 1 with connect through a plurality of connecting strips 8 between the second flange 7, be provided with a plurality of bolt holes 12 on the first flange 1, a plurality of bolt holes 12 with a plurality of counter bores 14 are corresponding. One side of the first flange 1 facing the hollow shaft neck 1 is provided with an L-shaped rubber protection pad, and the L-shaped rubber protection pad extends from one side of the first flange 1 to a seam allowance of the first flange 1.
A bowl-shaped nut protective sleeve 9 is coaxially arranged between the first flange 1 and the hollow shaft neck 1 and the bolt hole 12, and a nut rubber plug 10 is arranged in the bowl-shaped nut protective sleeve 9; a 1-type nonmetal insert hexagonal locking nut 11 is arranged in the nut rubber plug 10; the bolt hole 12 with connect through hexagon socket head cap screw 16 between the counter bore 14, be provided with gasket and nut in the bolt head rubber buffer 15, it is specific, in the microcephaly of hexagon socket head cap screw 16 passed 1 type nonmetal inserts hexagonal lock nut 11, bowl type nut protective sheath 9, L type rubber protection pad, first flange 1 and controller port 301 entering counter bore 14 in proper order, be connected with gasket and the nut cooperation in the counter bore 14.
The nut rubber plug 10 and the bowl-shaped nut protective sleeve 9 are in interference fit, and the bolt head rubber plug 15 and the counter bore 14 are in interference fit.
The overflow weir controller 3 stops the grinding balls in the hollow shaft neck 1 from overflowing along with ore pulp from the interior of the mill cylinder to continue flowing to the cylindrical screen 5, and the anti-spiral blades 4 arranged on the inner wall of the overflow weir controller 3 convey the grinding balls stopped by the overflow weir controller 3 to the direction of the mill cylinder in the continuous rotation of the hollow shaft neck 1 and the overflow weir controller 3 along with the mill cylinder, so that the effect of improving the mineral grinding medium filling rate of the mill is achieved. The ore discharging effect of the overflow ball mill on fine-grained ore pulp can not be influenced.
The L-shaped rubber protection pad 13 can protect the back surfaces of the first flange 1, the second flange 7 and the connecting strip 8 from being abraded and corroded by ore pulp, so that the service life of the L-shaped rubber protection pad is greatly prolonged, the times of detaching and installing the flange are reduced, and the mine operation cost is saved. Gluing seals are arranged in the counter bore 14 and the bowl-shaped nut protective sleeve 9 to further avoid abrasion and corrosion of ore pulp, so that the well-protected hexagonal locking nut 11 with the non-metal insert can save replacement time when being disassembled.
The assembly process of the invention is as follows:
firstly, the first flange 1 and the second flange 7 are superposed and correspond to the butt flange on the cylindrical screen 5, the first flange 1 and the second flange 7 are reversely screwed from the cylindrical screen 5 to the first flange 1 and the second flange 7 through full-thread bolts, and the first flange 1 and the second flange 7 are firstly jointed on the cylindrical screen 5.
Next, the controller ports 301 are respectively fitted into the bolt holes 12 on the first flange 1 and the second flange 7 with hexagon socket head cap screws 16 to form the weir controllers 3. And then the cylindrical screen 5 and the overflow weir controller 3 are integrally butted on a connecting flange arranged at the end part of the hollow journal 1, and nuts are arranged on the full-thread bolts to fix the hollow journal 1, the overflow weir controller 3 and the cylindrical screen 5.
And finally, after the whole body is lifted, the whole body is installed on an end cover at the discharge side of the overflow ball mill by a via hole bolt, and the whole installation is completed.
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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The overflow weir controller at the ore discharge end, which can improve the filling rate of the ceramic balls of the overflow ball mill, is characterized by comprising a hollow shaft neck, an overflow weir controller and a cylindrical screen; one end of the hollow shaft neck is connected with an end cover at the discharging side of the ball mill, and the overflow weir controller is arranged between the other end of the hollow shaft neck and the cylindrical screen.
2. The discharge end overflow weir controller capable of improving the filling rate of ceramic balls of a overflow ball mill as claimed in claim 1, wherein the other end of the hollow shaft neck is provided with a connecting flange.
3. The discharge end overflow weir controller capable of improving the filling rate of ceramic balls of a overflow ball mill as claimed in claim 1, wherein the inner wall of the overflow weir controller is provided with reverse helical blades.
4. The discharge end overflow weir controller capable of improving the filling rate of ceramic balls of an overflow type ball mill according to claim 1, wherein a controller port is arranged at one end of the overflow weir controller; a first flange is arranged between the controller port and the hollow shaft neck.
5. The ore discharge end overflow weir controller capable of improving the filling rate of ceramic balls of an overflow ball mill according to claim 4, wherein one side of the port of the controller, which is far away from the first flange, is provided with a plurality of counter bores, and bolt head rubber plugs are arranged in the counter bores.
6. The controller for the mine end overflow weir capable of improving the filling rate of ceramic balls of an overflow ball mill as claimed in claim 5, wherein a second flange is arranged at the stop of the first flange, the first flange and the second flange are coaxially arranged, the first flange and the second flange are connected through a plurality of connecting strips, a plurality of bolt holes are arranged on the first flange, and the bolt holes correspond to the counter bores.
7. An end-of-run weir controller for improving ceramic ball fill of a flooded ball mill as claimed in claim 6 wherein the first flange is provided with an L-shaped rubber protection pad on the side facing the hollow journal, the L-shaped rubber protection pad extending from the side of the first flange to the stop of the first flange.
8. The ore discharge end overflow weir controller capable of improving the filling rate of ceramic balls of an overflow ball mill according to claim 5, wherein a bowl-shaped nut protective sleeve is coaxially arranged between the first flange and the hollow shaft neck and the bolt hole, and a nut rubber plug is arranged in the bowl-shaped nut protective sleeve; a first nut is arranged in the nut rubber plug.
9. The discharge end overflow weir controller for improving the fill rate of ceramic balls in a overflow ball mill as claimed in claim 8, wherein the first nut is a type 1 non-metal insert hexagonal lock nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110376594.6A CN113070133A (en) | 2021-04-07 | 2021-04-07 | Ore discharge end overflow weir controller capable of improving filling rate of ceramic balls of overflow ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110376594.6A CN113070133A (en) | 2021-04-07 | 2021-04-07 | Ore discharge end overflow weir controller capable of improving filling rate of ceramic balls of overflow ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113070133A true CN113070133A (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110376594.6A Pending CN113070133A (en) | 2021-04-07 | 2021-04-07 | Ore discharge end overflow weir controller capable of improving filling rate of ceramic balls of overflow ball mill |
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| Country | Link |
|---|---|
| CN (1) | CN113070133A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522464A (en) * | 2021-07-29 | 2021-10-22 | 湖南柿竹园有色金属有限责任公司 | Ore discharging device of overflow type ball mill |
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2021
- 2021-04-07 CN CN202110376594.6A patent/CN113070133A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113522464A (en) * | 2021-07-29 | 2021-10-22 | 湖南柿竹园有色金属有限责任公司 | Ore discharging device of overflow type ball mill |
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Application publication date: 20210706 |