CN215277666U - Coarse and fine aggregate simultaneous preparation system - Google Patents
Coarse and fine aggregate simultaneous preparation system Download PDFInfo
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- CN215277666U CN215277666U CN202022263434.4U CN202022263434U CN215277666U CN 215277666 U CN215277666 U CN 215277666U CN 202022263434 U CN202022263434 U CN 202022263434U CN 215277666 U CN215277666 U CN 215277666U
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- 238000002360 preparation method Methods 0.000 title claims description 11
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000000428 dust Substances 0.000 claims abstract description 22
- 239000002893 slag Substances 0.000 claims abstract description 18
- 238000000227 grinding Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000004576 sand Substances 0.000 description 24
- 239000000463 material Substances 0.000 description 17
- 239000002245 particle Substances 0.000 description 7
- 239000004575 stone Substances 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Crushing And Grinding (AREA)
Abstract
The utility model relates to a system for simultaneously preparing coarse and fine aggregates, which comprises a vertical mill, wherein the vertical mill is provided with a feed inlet, a grinding roller and a grinding disc, and an air ring is arranged between the edge of the grinding disc and a shell; the device also comprises a feeding belt, an air inlet pipe, a vibrating screen, a lifter, a dust collector and a spiral conveying device; the discharge end of the feeding belt is connected with the feed inlet of the vertical mill, one end of the air inlet pipe is connected with the air inlet of the vertical mill and is arranged below the air ring, the feed inlet of the vibrating screen is connected with the slag outlet of the vertical mill, the feed inlet of the elevator is connected with the discharge outlet of the vibrating screen, the air inlet of the dust collector is connected with the air outlet of the vertical mill, the slag outlet and the powder concentrator are further arranged in the vertical mill, and the feed inlet of the spiral conveying device is connected with the coarse powder outlet of the powder concentrator; the utility model discloses a vertical mill carries out the breakage to the raw materials, selects fine aggregate and coarse aggregate with the help of selection powder machine and vibration, prepares out fine aggregate and coarse aggregate in step.
Description
Technical Field
The utility model relates to a thick and thin aggregate prepares system simultaneously.
Background
The sand for construction is mainly river sand in the past, but because river sand is exploited for many years in excess, the ecological environment and safety of the river channel are overwhelmed, and the sand resources are nearly exhausted. The country forbids to exploit river sand for protecting ecological environment, and is one of important measures for protecting channel safety and water ecology of Yangtze river and the like, but river sand supply amount can be directly reduced, and the infrastructure construction scale of China is larger and larger, so that the promotion of using machine-made sand to replace river sand is imperative.
The concrete is mainly composed of cement, aggregate, water, an additive and the like, wherein the aggregate is divided into coarse aggregate and fine aggregate, the fine aggregate is also called sand, and the aggregate is most commonly sandstone aggregate in the aggregate types, and the sandstone aggregate has the advantages of large resource quantity, fixed material source, stable performance, lower price, fixed production place, contribution to environmental protection and the like, so the concrete is an ideal aggregate product in construction engineering.
The sandstone aggregate is a general name of materials such as sand, pebble (gravel) stone, broken stone, block stone, material stone and the like, in the preparation process of the sandstone aggregate, the prepared aggregate with the particle size of more than 4.75mm is called coarse aggregate, namely what we often say is stone or broken stone, and the aggregate with the particle size of less than 4.75mm is called fine aggregate, also called sand or machine-made sand; the sandstone aggregate is a main building material of structures such as concrete, piled stone and the like in construction engineering.
At present, the preparation of the machine-made sand mainly adopts a mode of crushing raw materials firstly and then screening, wherein the crushing is mainly finished by a crusher or a vertical mill; the crusher is divided into coarse crushing, medium crushing, fine crushing and the like according to the granularity of input and output materials and the application of products, but due to the crushing principle, when medium sand and fine sand are prepared, the raw materials are crushed for multiple times to reach the granularity of the machine-made sand, the process flow is complex, the time consumption is long, and further the processing efficiency is low and the energy consumption is high; when the vertical mill is used for crushing, the proportion of powder in the machine-made sand is too high, so that the purity of the machine-made sand is low, and the machine-made sand is to be further improved. The removal of fine powder is a necessary step for realizing the sand making purity, the prior art mostly adopts a water washing mode to realize, water is brought into the machine-made sand to influence the quality of the machine-made sand, and the removal of the brought water usually needs a drying heat source or energy consumption.
SUMMERY OF THE UTILITY MODEL
To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a thick fine aggregate synchronous preparation system of purity that has simplified the flow in order to improve machining efficiency and reduce the energy consumption has improved fine aggregate (mechanism sand) simultaneously is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a thick and thin aggregate prepares system simultaneously, includes vertical mill, dust collector, fan, chute, is equipped with mill, grinding roller, wind ring, feed inlet, air intake one, air outlet one in the vertical mill, and the wind ring is located the mill edge and vertically grinds between the casing, its characterized in that: the system also comprises a feeding belt, an air inlet pipe, a vibrating screen, a lifter and a spiral conveying device; the vertical mill is provided with a slag hole, and the slag hole is positioned below the grinding disc and the air ring; the discharge end of the feeding belt is connected with the feed inlet of the vertical mill, one end of the air inlet pipe is connected with the air inlet I of the vertical mill and is arranged below the air ring, the feed inlet of the vibrating screen is connected with the slag outlet of the vertical mill, the feed inlet of the elevator is connected with the discharge outlet of the vibrating screen, the air inlet II of the dust collector is connected with the air outlet I of the vertical mill, the spiral conveying device is arranged in the vertical mill in an inserting mode, the powder concentrator is further arranged in the vertical mill, the spiral conveying device is located below the powder concentrator, and the feed inlet of the spiral conveying device is connected with the coarse powder outlet of the powder concentrator; and a third air inlet of the fan is connected with a second air outlet of the dust collector, and a discharge hole of the dust collector is connected with a feed end of the chute.
Preferably, a style wheel is further arranged between the discharge end of the feeding belt and the feed inlet of the vertical mill.
Preferably, the vibrating screen comprises a plurality of vertically stacked screen meshes, and the inner diameter of each screen mesh is gradually reduced from top to bottom.
Preferably, the sieve holes of the vibrating sieve are 4.75-40 mm.
Preferably, a grading device is further arranged below the discharge hole of the spiral conveying device, the grading device comprises a plurality of vertically stacked second screens, and the inner diameters of the screen holes of the plurality of second screens are gradually reduced from top to bottom.
Preferably, the inner diameter of the sieve hole of the second sieve is 0.08-4.75 mm.
Preferably, an air locking blanking device is further arranged between the feeding hole of the vibrating screen and the slag outlet of the vertical mill.
Compared with the prior art, the utility model has the advantages of: the utility model adopts the vertical mill to crush the raw materials, and screens out fine aggregate and coarse aggregate by means of the powder concentrator and the vibrating screen, thereby simplifying the flow to improve the processing efficiency and reduce the energy consumption; meanwhile, powder in the fine aggregate (machine-made sand) is removed by means of the vertical mill powder concentrator and the dust collector, so that the purity of the fine aggregate is improved; the simultaneous preparation of coarse aggregate is realized through the vertical mill air ring, the slag discharging port and the vibrating screen, so that the system has the function of simultaneously preparing coarse and fine aggregate, the aggregate yield is improved, and the data is effectively utilized; the system can adjust the proportion of finished products of fine aggregate and coarse aggregate by adjusting the pressure of the vertical mill, and is flexible.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a structural position diagram of a vibrating screen with multi-stage screens according to the present invention;
FIG. 3 is a structural position diagram of the fine aggregate classifier of the present invention;
fig. 4 is a structural position diagram of the air-lock blanking device of the present invention.
The equipment numbers are as follows:
1. a feeding belt, 2, a style wheel, 3, a vertical mill, 3-1, a feeding hole of the vertical mill, 3-2, a powder selecting machine of the vertical mill, a coarse powder outlet of the powder selecting machine of the 3-3 vertical mill, 3-4, a first air inlet and a first air outlet of the vertical mill, 3-5, a slag outlet of the vertical mill, 3-6, a first air outlet and a first air outlet of the vertical mill, 3-7, an air ring of the vertical mill, a millstone of the 3-8 vertical mill, 3-9, a grinding roller of the vertical mill, 4, a spiral conveying device, 5, an air inlet pipe, 6, a vibrating screen, 6-1, a screen of the vibrating screen, 7, a lifting machine, 8, a dust collector, 8-1, a second air inlet (8-1) of the dust collector, 8-2, a second air outlet and an 8-3 of the dust collector, a discharging hole of the dust collector, 9, a fan, 9-1, a third air inlet and 10 of the fan, a chute, 11, 9-1, a second air outlet of the vertical mill, a vertical, Grading plant, 11-1 second screen of grading plant, 12, air-lock blanking device
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.
As shown in figure 1, the system for simultaneously preparing coarse and fine aggregates comprises a vertical mill 3, a dust collector 8, a fan 9 and a chute 10, wherein a grinding disc 3-8, a grinding roller 3-9, an air ring 3-7, a feed inlet 3-1, an air inlet I3-4 and an air outlet I3-6 are arranged in the vertical mill 3, and the air ring 3-7 is positioned between the edge of the grinding disc 3-8 and the shell of the vertical mill 3, and is characterized in that: the system also comprises a feeding belt 1, a spiral conveying device 4, an air inlet pipe 5, a vibrating screen 6 and a lifter 7; the vertical mill is provided with a slag hole 3-5, and the slag hole 3-5 is positioned below the grinding disc 3-8 and the air ring 3-7; the discharge end of the feeding belt 1 is connected with a feed inlet 3-1 of the vertical mill, one end of an air inlet pipe 5 is connected with a first air inlet 3-4 of the vertical mill 3 and is arranged below an air ring 3-7, a feed inlet of the vibrating screen 6 is connected with a slag outlet 3-5 of the vertical mill 3, a feed inlet of the elevator 7 is connected with a discharge outlet of the vibrating screen 6, a second air inlet of the dust collector 8 is connected with a first air outlet 3-6 of the vertical mill 3, the spiral conveying device 4 is arranged in the vertical mill 3 in an inserting manner, a powder concentrator 3-2 is further arranged in the vertical mill 3, the spiral conveying device 4 is positioned below the powder concentrator 3-2, and a feed inlet of the spiral conveying device 4 is connected with a coarse powder outlet 3-3 of the powder concentrator; an air inlet III 9-1 of the fan 9 is connected with an air outlet II 8-2 of the dust collector 8, and a discharge hole 8-3 of the dust collector 8 is connected with a feed end of the chute 10.
A style wheel 2 is also arranged between the discharge end of the feeding belt 1 and the feed inlet of the vertical mill 3.
As shown in FIG. 2, the vibrating screen 6 comprises a plurality of vertically stacked screens 6-1, the inside diameters of the screens 6-1 are gradually reduced from top to bottom, and the inside diameter of the screen 6-1 is 4.75-40 mm.
As shown in fig. 3, a grading device 11 is further arranged below the discharge port of the spiral conveying device 4, the grading device 11 includes a plurality of vertically stacked second screens 11-1, the inside diameters of the screen holes of the plurality of second screens 11-1 are gradually reduced from top to bottom, and the inside diameter of the screen hole of the second screen 11-1 is 0.08-4.75 mm.
As shown in fig. 4, an air-locking blanking device 12 is also arranged between the feed inlet of the vibrating screen 6 and the slag outlet of the vertical mill 3.
A technological process of a system for simultaneously preparing coarse and fine aggregates comprises the following steps:
(1) the massive rocks are fed into a vertical mill 3 through a feeding belt 1 and a style wheel 2 for milling, the milled materials move to the edge of a grinding disc 3-8 under the rotation of the grinding disc 3-8, and powder selecting airflow enters the vertical mill 3 through an air inlet pipe 5 and enters the upper part of the grinding disc 3-8 after passing through an air ring 3-7 from bottom to top.
(2) The materials finally slide down the millstone 3-8 under the rotation of the millstone 3-8 and fall into the air ring 3-7, small particles and powder in the falling materials are blown upwards by the powder selecting airflow and are carried into the powder selecting machine 3-2, large materials cannot be blown by the powder selecting airflow and are discharged from the vertical mill through a slag outlet 3-5 of the vertical mill 3, then the large materials enter the vibrating screen 6, coarse aggregates and large materials with various particle size ranges are screened out by the vibrating screen 6, the coarse aggregates are discharged outwards and collected, and the large materials return to the feeding belt 1 through the elevator 7 and return to the vertical mill 3 again for circular crushing.
(3) The materials brought into the powder concentrator 3-2 are subjected to particle size classification in the powder concentrator 3-2, fine powder is discharged from the vertical mill 3 from the air outlet I3-6 along with the powder concentration airflow under the action of the fan 9, then enters the dust collector 8 to be collected into fine powder, the fine powder is output outwards through the chute 10, and the waste gas after dust collection is discharged into the atmosphere through the fan 9; the coarse powder is collected from the conical part 3-3 of the powder concentrator and is taken out of the vertical mill by the spiral conveying device 4, and fine aggregate is prepared.
(4) In the process of preparing the fine aggregate and the coarse aggregate, if the yield of the fine aggregate needs to be increased, the operating pressure of the vertical mill 3 is increased, so that the blocky materials are ground in the vertical mill 3 to generate more small particles; if the yield of the coarse aggregate needs to be increased, the operating pressure of the vertical mill 3 is reduced, so that the large materials are crushed into larger materials, fewer small particles are produced, and the amount of fine powder is synchronously reduced.
(5) The air locking blanking device 12 can prevent air from leaking into the vertical mill 3 when large materials come out of the slag outlet 3-5 of the vertical mill 3, so as to reduce the air leakage rate of the vertical mill 3 system, reduce the system resistance and save the air separation power consumption; when raw materials with high moisture content are ground in the vertical mill 3, the drying of the materials is completed at the same time, so that the powder selecting airflow is hot air with a certain temperature, the air leaking into the vertical mill 3 absorbs a certain amount of heat to become hot waste gas, and the air locking blanking device 12 is additionally arranged to prevent air leakage and reduce the drying heat.
The utility model adopts the vertical mill 3 to crush the raw materials, and screens out fine aggregate and coarse aggregate by means of the vertical mill powder concentrator 3-2 and the vibrating screen 6, thereby simplifying the flow to improve the processing efficiency and reduce the energy consumption; meanwhile, powder in the aggregate is removed by means of the vertical mill powder concentrator 3-2 and the dust collector 8, so that the purity of the aggregate, particularly fine aggregate, is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (6)
1. The utility model provides a thick and thin aggregate prepares system simultaneously, includes vertical mill (3), dust collector (8), fan (9), chute (10), is equipped with mill dish (3-8), grinding roller (3-9), wind ring (3-7), feed inlet (3-1), air intake (3-4), air outlet (3-6) in the vertical mill, and wind ring (3-7) are located between mill dish (3-8) edge and the vertical mill casing, its characterized in that: the system also comprises a feeding belt (1), an air inlet pipe (5), a vibrating screen (6), a lifter (7) and a spiral conveying device (4); the vertical mill is provided with a slag outlet (3-5), and the slag outlet (3-5) is positioned below the grinding disc (3-8) and the air ring (3-7); the discharge end of the feeding belt (1) is connected with a feed inlet (3-1) of the vertical mill (3), one end of the air inlet pipe (5) is connected with an air inlet I (3-4) of the vertical mill and is arranged below the air ring (3-7), the feed inlet of the vibrating screen (6) is connected with the slag outlet (3-5) of the vertical mill, the feed inlet of the elevator (7) is connected with the discharge outlet of the vibrating screen (6), an air inlet II (8-1) of the dust collector (8) is connected with an air outlet I (3-6) of the vertical mill (3), the spiral conveying device (4) is arranged in the vertical mill in an inserting way, the vertical mill (3) is also provided with a powder concentrator (3-2), the screw conveying device (4) is positioned below the powder concentrator (3-2), and a feed inlet of the screw conveying device (4) is connected with a coarse powder outlet (3-3) of the powder concentrator; and a third air inlet (9-1) of the fan (9) is connected with a second air outlet (8-2) of the dust collector (8), and a discharge hole (8-3) of the dust collector (8) is connected with a feed end of the chute (10).
2. A system for the simultaneous preparation of coarse and fine aggregates according to claim 1, characterised in that: and a style wheel (2) is also arranged between the discharge end of the feeding belt (1) and the feed inlet (3-1) of the vertical mill (3).
3. A system for the simultaneous preparation of coarse and fine aggregates according to claim 2, characterized in that: an air locking blanking device is arranged between the feed inlet of the vibrating screen (6) and the slag outlet (3-5) of the vertical mill (3).
4. A system for the simultaneous preparation of coarse and fine aggregates according to claim 3, characterized in that: the vibrating screen (6) comprises a plurality of vertically superposed screen meshes (6-1), and the inner diameter of each screen mesh is gradually reduced from top to bottom.
5. A system for the simultaneous preparation of coarse and fine aggregates according to claim 4, characterized in that: the inner diameter of a sieve hole of the screen (6-1) of the vibrating sieve (6) is 4.75-40 mm.
6. A system for the simultaneous preparation of coarse and fine aggregates as claimed in claim 5, wherein: a grading device (11) is arranged below a discharge hole of the spiral conveying device (4), the grading device (11) comprises a plurality of vertically overlapped second screens (11-1), the inner diameters of the screen holes of the second screens (11-1) are gradually reduced from top to bottom, and the inner diameters of the screen holes are 0.08-4.75 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022263434.4U CN215277666U (en) | 2020-10-13 | 2020-10-13 | Coarse and fine aggregate simultaneous preparation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022263434.4U CN215277666U (en) | 2020-10-13 | 2020-10-13 | Coarse and fine aggregate simultaneous preparation system |
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| CN215277666U true CN215277666U (en) | 2021-12-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156854A (en) * | 2020-10-13 | 2021-01-01 | 南京凯盛国际工程有限公司 | Coarse and fine aggregate simultaneous preparation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156854A (en) * | 2020-10-13 | 2021-01-01 | 南京凯盛国际工程有限公司 | Coarse and fine aggregate simultaneous preparation system |
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Address after: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Zhongcai International Intelligent Technology Co.,Ltd. Address before: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee before: NANJING KISEN INTERNATIONAL ENGINEERING Co.,Ltd. |