CN112570263B - Powder concentrator for calcium carbonate powder production - Google Patents
Powder concentrator for calcium carbonate powder production Download PDFInfo
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- CN112570263B CN112570263B CN202011590837.8A CN202011590837A CN112570263B CN 112570263 B CN112570263 B CN 112570263B CN 202011590837 A CN202011590837 A CN 202011590837A CN 112570263 B CN112570263 B CN 112570263B
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- mounting frame
- blanking pipe
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- 239000000843 powder Substances 0.000 title claims abstract description 72
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 30
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000007599 discharging Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000001179 sorption measurement Methods 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 abstract description 3
- 238000000429 assembly Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- 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
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- 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
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- 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
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides a powder concentrator for producing calcium carbonate powder, and belongs to the technical field of calcium carbonate powder production equipment. The screening mechanism comprises a screening cylinder, a feeding hopper, a coarse blanking pipe and a fine blanking pipe which are connected in series, wherein a rotating cylinder is connected in a rotating mode in the screening cylinder, two shielding filter structures are arranged outside the rotating cylinder, each shielding filter structure comprises an arc-shaped shielding sheet close to the inner wall of the screening cylinder, a connecting rod for connecting the shielding sheet with the outer wall of the rotating cylinder, and a mounting frame radially arranged in a material cavity, a plurality of telescopic assemblies are arranged between the mounting frame and the connecting rod, a filter screen is arranged in the middle of the mounting frame, a driving cylinder is connected in the rotating cylinder in a rotating mode, and the driving cylinder is connected with a driving motor; the serial connection mode of the plurality of sorting mechanisms is as follows: the thin discharging pipe of one sorting mechanism is connected with the feeding hopper (21) of the sorting mechanism behind the thin discharging pipe. The invention has the advantages of being capable of continuously finishing the selection of the calcium carbonate powder with different fineness on line, and the like.
Description
Technical Field
The invention belongs to the technical field of calcium carbonate powder production equipment, and relates to a powder concentrator for calcium carbonate powder production.
Background
The calcium carbonate powder is coarse whiting powder with certain whiteness and fineness obtained by mechanical crushing, sorting and other procedures of ore (CaCO 3), and is widely used as a filler in products such as desulfurization of power plants, glass fiber, citric acid industry, buildings, calcium plastic products, ceramics, chemical fiber carpets, waterproof materials, feeds, foods, putty powder of inner and outer walls and the like.
In the production process, the selection of the calcium carbonate powder with different fineness is an important link, the selection can collect products with different specifications, on the other hand, the powder with the fineness which is not in accordance with the requirement is required to be selected and returned to the crushing mechanism, and the powder enters the powder selecting machine for separation after being crushed again, in the prior art, only the powder with one particle size can be selected in one flow, namely, the powder which is not in accordance with the fineness requirement is removed through the filtering structure and returned to the crushing mechanism, so that the efficiency is lower, the process is complicated, corresponding equipment and required lifting machines are greatly increased, and the dust removing work of workshops is also increased; moreover, the existing filtering structure (especially when powder with certain fineness is strictly selected) is easy to be blocked, and frequent maintenance is needed, so that the selection quality and continuous operation production are affected.
Disclosure of Invention
The invention aims to solve the problems existing in the prior art and provides a powder selector for producing calcium carbonate powder, and the technical problem to be solved by the invention is how to continuously finish the selection of various powder with different specifications on line.
The aim of the invention can be achieved by the following technical scheme: the powder selecting machine for producing the calcium carbonate powder is characterized by comprising a plurality of selecting mechanisms which are connected in series, wherein each selecting mechanism comprises a selecting cylinder, a feeding hopper, a coarse blanking pipe and a fine blanking pipe, a rotary cylinder is rotationally connected between each selecting cylinder, an annular material cavity is formed between each rotary cylinder and each selecting cylinder, two shielding filter structures are arranged outside each rotary cylinder and are circumferentially and uniformly distributed outside each rotary cylinder, each shielding filter structure comprises an arc-shaped shielding sheet close to the inner wall of each selecting cylinder, a connecting rod for connecting the shielding sheet with the outer wall of each rotary cylinder and a mounting frame radially arranged in the corresponding material cavity, a plurality of telescopic assemblies are arranged between each mounting frame and each connecting rod, a filter screen is arranged in the middle of each mounting frame, each telescopic assembly comprises a guide sleeve fixed on each mounting frame and a guide post fixed on each connecting rod, each guide sleeve and each guide post corresponding to each guide sleeve are of the same in diameter, each guide post is slidingly connected in each corresponding guide sleeve, and a reset spring capable of driving each guide sleeve to be far away from each guide sleeve is arranged in each guide sleeve;
the inner side of the mounting frame is provided with a first iron adsorption block matched with the first electromagnetic block;
A plurality of second electromagnetic blocks corresponding to the shielding filter structures one by one are uniformly arranged on the outer wall of the sorting cylinder in the circumferential direction, and second adsorption blocks of iron matched with the second electromagnetic blocks are embedded in the shielding sheets;
When the second electromagnetic block adsorbs the second adsorption block, one of the shielding sheets shields the inlet of the coarse blanking pipe; the fine blanking pipe is positioned at the lowest point of the sorting barrel, the coarse blanking pipe and the feeding hopper are positioned at one side of the vertical radial line of the sorting barrel, and the rotation direction of the driving barrel is as follows: the direction that arbitrary shielding piece sheltered from hopper export, thick unloading pipe entry and thin unloading pipe entry in proper order can be controlled.
Furthermore, the first electromagnetic block and the second electromagnetic block are of an electromagnetic structure with controllable magnetic force.
Further, the series connection mode of the plurality of sorting mechanisms is as follows: the thin discharging pipe of one sorting mechanism is connected with the feeding hopper of the sorting mechanism at the rear of the thin discharging pipe.
The working principle of a single sorting mechanism is as follows:
The calcium carbonate powder after smashing the mechanism is thrown into the hopper at uniform speed, the driving motor is started, the driving cylinder is enabled to rotate, the first electromagnetic block is insufficient for driving the mounting frame to push the rotary cylinder to rotate due to the adsorption force action of the second electromagnetic block and the second adsorption block, but the mounting frame can be driven to be in a shaking state, because the mounting frame can move towards the direction of compressing the reset spring when the first electromagnetic block corresponds to the first adsorption block, and when the first electromagnetic block is separated from the first adsorption block, the mounting frame is reset under the action of the reset spring, namely shaking is realized by the mounting frame, so that powder falling onto the filter screen can be fully filtered.
The drum stop state is a fine powder sorting state, specifically: under the condition that the second electromagnetic block and the second adsorption block act, the shielding piece corresponding to the filter screen in the working state shields the inlet of the coarse blanking pipe, powder materials fall into the filter screen in the working position from the feeding hopper, powder passing through the filter screen falls into the fine blanking pipe at the lowest point, and coarse powder which cannot be filtered through the filter screen is accumulated on the filter screen.
Feeding the coarse powder into a coarse blanking pipe: when the filterable powder accumulated on the filter screen at the working position is accumulated to a certain amount, the second electromagnetic block can be actively controlled to be powered off, or the current amount of the second electromagnetic block is reduced to separate the second adsorption block from the second electromagnetic block, or the filter screen bears load to separate the second adsorption block from the second electromagnetic block, the rotary drum starts to rotate, in the rotary drum rotating process, the two shielding sheets firstly close the inlet of the feeding hopper and the inlet of the thin discharging pipe respectively, then the coarse discharging pipe is opened under the condition of keeping the inlet of the feeding hopper closed, coarse powder at the upper side of the filter screen enters the coarse discharging pipe, and after the coarse powder is discharged, the two shielding sheets are reset to return to the state of stopping the rotary drum, so that circulation is realized.
The plurality of sorting mechanisms are connected in series: according to the serial sequence, the subdivision selected by the previous sorting mechanism is taken as the raw material of the next sorting mechanism, and enters from the feeding hopper to sort the raw material again, and each filter screen is adaptively arranged, namely the pore diameters of the filter screens of the sequential sorting mechanisms are sequentially reduced.
Detailed description of the setting and control of the second electromagnetic block: when the second electromagnetic block is actively controlled, the energizing current of the second electromagnetic block can be controlled to select fine powder, so that the adsorption force between the second electromagnetic block and the second adsorption block is larger, the feeding amount of the feeding hopper is taken as a reference, and after the feeding amount of the feeding hopper reaches a set value, the current of the second electromagnetic block is disconnected, so that the rotary drum can rotate under the action of the adsorption force of the first electromagnetic block and the first adsorption block, and of course, the material above the filter screen can also drive the rotary drum to rotate; when the second electromagnetic block is fixed with the energizing current, the rotary drum is controlled to rotate according to the acting force of the filter screen on the rotary drum in the shaking process after bearing the load, and the rotary drum rotates to discharge coarse powder when the acting force can drive the second electromagnetic block to separate from the second adsorption block; of course, the current of the second electromagnetic block can also be controlled in real time, namely, the current of the second electromagnetic block is reduced when needed so that the rotary drum can rotate under the correspondence of other data or logic, and the current of the second electromagnetic block is increased when the rotary drum is needed to stop.
It is easy to see that the powder selecting machine can continuously finish powder with different fineness on line, the precision and efficiency of selecting powder can be increased under the shaking state of the filter screen, the structure is simple, the powder is in a relatively closed space, and the environmental protection problems of dust raising and the like of the traditional powder selecting mechanism are avoided.
The working states of the two filter screens are continuously switched, one filter screen is in a shaking state when the other filter screen is in the working state, and the idle filter screen can clean powder possibly remained in the pores of the filter screen in the shaking process, so that the filter screen is kept in an initial state, and the powder which falls out of the idle filter screen in the shaking process and blocks the filter screen enters a fine blanking pipe
Drawings
Fig. 1 is a schematic structural view of the screening mechanism when the screen is in one of the shaking states.
Fig. 2 is a schematic structural view of the screening mechanism in another state where the screen is in shaking.
Fig. 3 is a schematic view of the structure of the sorting mechanism in the coarse powder discharging state.
Fig. 4 is a schematic view of a structure in which one of the shutter pieces is in a state of closing the hopper outlet.
Fig. 5 is a schematic perspective view of the shutter and drum (one of the shutter and its connector are not shown for clarity).
In the figure, 1, a sorting cylinder; 21. feeding into a hopper; 22. a coarse blanking pipe; 23. a fine blanking pipe; 24. a material cavity; 25. a rotating drum; 26. a drive cylinder; 31. a shielding sheet; 32. a connecting rod; 33. a mounting frame; 34. a filter screen; 35. a guide sleeve; 36. a guide post; 41. a first electromagnetic block; 42. a first adsorption block; 51. a second electromagnetic block; 52. and a second adsorption block.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 5, the sorting mechanism comprises a plurality of sorting mechanisms connected in series, the sorting mechanism comprises a sorting barrel 1, a feeding hopper 21, a coarse blanking pipe 22 and a fine blanking pipe 23, a rotary barrel 25 is rotationally connected between the sorting barrel 1, an annular material cavity 24 is formed between the rotary barrel 25 and the sorting barrel 1, two shielding and filtering structures are arranged outside the rotary barrel 25, the two shielding and filtering structures are circumferentially and uniformly distributed outside the rotary barrel 25, each shielding and filtering structure comprises an arc-shaped shielding sheet 31 close to the inner wall of the sorting barrel 1, a connecting rod 32 for connecting the shielding sheet 31 and the outer wall of the rotary barrel 25, a mounting frame 33 radially arranged in the material cavity 24, a plurality of telescopic assemblies are arranged between the mounting frame 33 and the connecting rod 32, a filter screen 34 is arranged in the middle of the mounting frame 33, each telescopic assembly comprises a guide sleeve 35 fixed on the mounting frame 33 and a guide post 36 fixed on the connecting rod 32, the guide sleeve 35 and the corresponding guide post 36 are of the same diameter, the guide post 36 is slidingly connected in the corresponding guide sleeve 35, and a reset spring capable of driving the guide sleeve 35 to be far away from the guide post 36 is arranged in the guide sleeve 35;
A driving cylinder 26 is rotationally connected in the rotary cylinder 25, the driving cylinder 26 is connected with a driving motor, a plurality of first electromagnetic blocks 41 which are in one-to-one correspondence with shielding and filtering structures are uniformly arranged on the circumference of the driving cylinder 26, and a first iron adsorption block 42 matched with the first electromagnetic blocks 41 is arranged on the inner side of the mounting frame 33;
a plurality of second electromagnetic blocks 51 which are in one-to-one correspondence with the shielding and filtering structures are uniformly arranged on the outer wall of the sorting barrel 1 in the circumferential direction, and second adsorption blocks 52 of iron which are matched with the second electromagnetic blocks 51 are embedded in the shielding sheets 31;
when the second electromagnetic block 51 adsorbs the second adsorption block 52, one of the shielding sheets 31 shields the inlet of the coarse blanking pipe 22; the fine blanking pipe 23 is positioned at the lowest point of the sorting barrel 1, the coarse blanking pipe 22 and the feeding hopper 21 are positioned at one side of the vertical diameter line of the sorting barrel 1, and the rotation direction of the driving barrel 26 is as follows: the direction in which the arbitrary shielding sheet 31 shields the outlet of the hopper 21, the inlet of the coarse blanking pipe 22, and the inlet of the fine blanking pipe 23 in order can be controlled.
The first electromagnetic block 41 and the second electromagnetic block 51 are both of an electromagnetically-generated magnetic structure with controllable magnetic force.
The serial connection mode of the plurality of sorting mechanisms is as follows: the thin discharging pipe of one sorting mechanism is connected with the feeding hopper 21 of the sorting mechanism behind the thin discharging pipe.
The working principle of a single sorting mechanism is as follows:
the crushed calcium carbonate powder of the crushing mechanism is uniformly input into the hopper 21, the driving motor is started to enable the driving cylinder 26 to rotate, the adsorption force of the second electromagnetic block 51 and the second adsorption block 52 is insufficient for driving the mounting frame 33 to push the rotary drum 25 to rotate due to the adsorption force action of the first electromagnetic block 41 and the second adsorption block 52, but the mounting frame 33 can be driven to be in a shaking state, because the mounting frame 33 can move towards the direction of compressing the reset spring when the first electromagnetic block 41 corresponds to the first adsorption block 42, and the mounting frame 33 is reset under the action of the reset spring when the first electromagnetic block 41 is separated from the first adsorption block 42, namely, the mounting frame 33 is vibrated, so that the powder falling on the filter screen 34 can be fully filtered.
Fig. 1 to 4 show one working cycle of the drum, wherein fig. 4 shows a fine powder falling path through the filter screen, fig. 1 and 2 show two states of the filter screen in a shaking state in the working state, and fig. 3 shows a coarse powder discharging state.
The drum 25 stopped state is a fine powder sorting state, specifically: under the action of the second electromagnetic block 51 and the second adsorption block 52, the shielding piece 31 corresponding to the filter screen 34 in the working state shields the inlet of the coarse blanking pipe 22, powder materials fall onto the filter screen 34 in the working position from the feeding hopper 21, powder passing through the filter screen 34 falls into the fine blanking pipe 23 at the lowest point, and coarse powder which cannot be filtered through the filter screen 34 is accumulated on the filter screen 34.
Coarse powder is fed into coarse feed pipe 22: when the non-filterable powder accumulated on the filter screen 34 at the working position is accumulated to a certain amount, the second electromagnetic block 51 can be actively controlled to be powered off, or the current amount of the second electromagnetic block 51 can be reduced to separate the second adsorption block 52 from the second electromagnetic block 51, or the second adsorption block 52 is separated from the second electromagnetic block 51 due to the bearing of the filter screen 34, the rotary drum 25 starts to rotate, during the rotation of the rotary drum 25, the two shielding sheets 31 firstly close the outlet of the feeding hopper 21 and the inlet of the thin discharging pipe respectively, then the coarse discharging pipe 22 is opened under the condition that the outlet of the feeding hopper 21 is kept closed, coarse powder on the upper side of the filter screen 34 enters the coarse discharging pipe 22, and after the coarse powder is discharged, the two shielding sheets 31 are reset back to the stopping state of the rotary drum 25, so that circulation is performed.
The plurality of sorting mechanisms are connected in series: the subdivision selected by the preceding sorting mechanism is taken as the raw material of the next sorting mechanism in the serial order, and the raw material enters from the feeding hopper 21 to be sorted again, and each filter screen 34 is adaptively arranged, that is, the pore diameters of the filter screens 34 are sequentially reduced by the sequential sorting mechanism.
Detailed description of the setting and control of the second electromagnet block 51: when the second electromagnetic block 51 is actively controlled, the energizing current of the second electromagnetic block 51 can be controlled to make the adsorption force between the second electromagnetic block 51 and the second adsorption block 52 larger when the fine powder is selected, the feeding amount of the feeding hopper 21 is taken as a reference, after the feeding amount of the feeding hopper 21 reaches a set value, the current of the second electromagnetic block 51 is disconnected, so that the rotary drum 25 can rotate under the adsorption force of the first electromagnetic block 41 and the first adsorption block 42, and of course, the material above the filter screen 34 can also drive the rotary drum 25 to rotate; when the second electromagnetic block 51 is fixed with the energizing current, the rotary drum 25 is controlled to rotate according to the acting force of the filter screen 34 on the rotary drum 25 in the shaking process, and when the acting force can drive the second electromagnetic block 51 to be separated from the second adsorption block 52, the rotary drum 25 rotates to realize the discharge of coarse powder; of course, the energizing current of the second electromagnetic block 51 can also be controlled in real time, that is, the energizing current of the second electromagnetic block 51 is reduced when needed to enable the drum 25 to rotate, and the energizing current of the second electromagnetic block 51 is increased when the drum 25 is needed to stop.
It can be seen that the powder selecting machine can continuously finish powder with different fineness on line, the precision and efficiency of selecting powder can be increased by the filter screen 34 under the shaking state, and the powder selecting machine is simple in structure, the powder is in a relatively closed space, and environmental protection problems of dust raising and the like of a traditional powder selecting mechanism are avoided.
The working states of the two filter screens 34 are continuously switched, when one filter screen 34 is in the working state, the other filter screen 34 is also in the shaking state, and the idle filter screen 34 can clean powder possibly remained in the pores of the filter screen 34 in the shaking process, so that the filter screen 34 is kept in the initial state, and the powder which is dropped out of the idle filter screen 34 in the shaking process and blocks the filter screen 34 enters the fine blanking pipe 23.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (1)
1. The powder selecting machine for producing calcium carbonate powder is characterized by comprising a plurality of selecting mechanisms connected in series, wherein each selecting mechanism comprises a selecting cylinder (1), a feeding hopper (21), a coarse blanking pipe (22) and a fine blanking pipe (23), a rotating cylinder (25) is rotatably connected between the selecting cylinder (1), an annular material cavity (24) is formed between the rotating cylinder (25) and the selecting cylinder (1), two shielding filtering structures are arranged outside the rotating cylinder (25), the two shielding filtering structures are uniformly distributed outside the rotating cylinder (25) in the circumferential direction, each shielding filtering structure comprises an arc-shaped shielding sheet (31) close to the inner wall of the selecting cylinder (1), a connecting rod (32) connected with the shielding sheet (31) and the outer wall of the rotating cylinder (25), a mounting frame (33) radially arranged in the material cavity (24), a plurality of telescopic components are arranged between the mounting frame (33) and the connecting rod (32), a filter screen (34) is arranged in the middle of the mounting frame (33), each telescopic component comprises a guide sleeve (35) fixed on the rotating cylinder (33) and a guide sleeve (36) fixed on the corresponding guide sleeve (36) and the guide sleeve (36) with the same diameter as the guide sleeve (35), a reset spring capable of driving the guide sleeve (35) to be far away from the guide post (36) is arranged in the guide sleeve (35);
A driving cylinder (26) is rotationally connected in the rotary cylinder (25), the driving cylinder (26) is connected with a driving motor, a plurality of first electromagnetic blocks (41) which correspond to shielding filtering structures one by one are uniformly arranged on the driving cylinder (26) in the circumferential direction, and a first iron adsorption block (42) matched with the first electromagnetic blocks (41) is arranged on the inner side of the mounting frame (33);
a plurality of second electromagnetic blocks (51) which are in one-to-one correspondence with the shielding and filtering structures are uniformly arranged on the outer wall of the sorting barrel (1) in the circumferential direction, and second adsorption blocks (52) of iron which are matched with the second electromagnetic blocks (51) are embedded in the shielding sheets (31);
When the second electromagnetic block (51) adsorbs the second adsorption block (52), one of the shielding sheets (31) shields the inlet of the coarse blanking pipe (22); the fine blanking pipe (23) is positioned at the lowest point of the sorting barrel (1), the coarse blanking pipe (22) and the feeding hopper (21) are positioned at one side of the vertical diameter line of the sorting barrel (1), and the rotation direction of the driving barrel (26) is as follows: the direction of the outlet of the feeding hopper (21), the inlet of the coarse blanking pipe (22) and the inlet of the fine blanking pipe (23) can be controlled by an arbitrary shielding sheet (31) to be shielded in sequence;
the serial connection mode of the plurality of sorting mechanisms is as follows: a thin discharging pipe of one sorting mechanism is connected with a feeding hopper (21) of the sorting mechanism behind the thin discharging pipe;
the first electromagnetic block (41) and the second electromagnetic block (51) are of an electromagnetic structure with controllable magnetic force;
According to the serial sequence, the fine powder selected by the previous selecting mechanism is taken as the raw material of the next selecting mechanism, enters from a feeding hopper (21), is selected again, and the pore diameter of the filtering holes of each filtering net (34) is sequentially reduced;
wherein, the calcium carbonate powder crushed by the crushing mechanism is put into a hopper (21) at a constant speed.
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| CN202011590837.8A CN112570263B (en) | 2020-12-29 | 2020-12-29 | Powder concentrator for calcium carbonate powder production |
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| CN202011590837.8A CN112570263B (en) | 2020-12-29 | 2020-12-29 | Powder concentrator for calcium carbonate powder production |
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| CN108636790A (en) * | 2018-05-14 | 2018-10-12 | 安徽华米生物科技有限公司 | A kind of dedicated particle screening separator of feed factory |
| CN109277290A (en) * | 2018-09-30 | 2019-01-29 | 中交天津港湾工程研究院有限公司 | A kind of dry sieve method effective aperture test fixture and its application method |
| CN109353556A (en) * | 2018-11-19 | 2019-02-19 | 湖北科技学院 | A kind of title tea machine structure on brick tea production line |
| KR101999104B1 (en) * | 2019-04-22 | 2019-07-11 | 민원 | Crusher for improving the particle size of fine aggregate and method for producing fine aggregate using the same |
| CN112718462A (en) * | 2020-12-29 | 2021-04-30 | 湖北科技学院 | Different particle size sorting mechanism for calcium carbonate powder |
| CN214211268U (en) * | 2020-12-29 | 2021-09-17 | 湖北科技学院 | Powder concentrator for calcium carbonate powder production |
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