CN214320448U - Cement raw material roller press final grinding system - Google Patents
Cement raw material roller press final grinding system Download PDFInfo
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- CN214320448U CN214320448U CN202022833731.8U CN202022833731U CN214320448U CN 214320448 U CN214320448 U CN 214320448U CN 202022833731 U CN202022833731 U CN 202022833731U CN 214320448 U CN214320448 U CN 214320448U
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- 239000002994 raw material Substances 0.000 title claims abstract description 31
- 238000000227 grinding Methods 0.000 title claims abstract description 19
- 239000004568 cement Substances 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 114
- 239000000463 material Substances 0.000 claims abstract description 41
- 239000000428 dust Substances 0.000 claims abstract description 20
- 238000004062 sedimentation Methods 0.000 claims description 5
- 230000007480 spreading Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
The utility model relates to a cement raw material roller press final grinding system, which comprises a feeding belt conveyor, a V-shaped separator, a second bucket elevator, a steady flow bin, a manual valve, an automatic quick stop valve, a roller press and a first bucket elevator which are sequentially connected along a material path, wherein a discharge port of the first bucket elevator is connected with a feed port of the V-shaped separator; the device comprises a cyclone cylinder, a first fine powder concentrator, a second fine powder concentrator, a dust collecting device and a fan, wherein the first fine powder concentrator is connected between an air outlet of the V-type separator and an air inlet of the cyclone cylinder in series; the utility model discloses reduce the powder concentration in the air current and take the material ability with the reinforcing air current, prevent simultaneously that the farine from entering into the roll squeezer and carry out the circulation extrusion, and then reduced the farine content of roll squeezer material in order to promote the extrusion work effect of roll squeezer to system stability has been promoted, and system's output and play powder quality have been guaranteed.
Description
Technical Field
The utility model relates to a cement raw materials roll squeezer finish grinding system.
Background
With the development of a material bed grinding technology, a cement industry raw material preparation system mainly takes the material bed grinding technology as a main part at present, the material bed grinding technology is mainly divided into a raw material vertical mill system and a raw material roller press final grinding system, the raw material vertical mill system mainly adopts an internal circulation vertical mill with a powder concentrator, and the resistance of the air flow of the system is larger due to the larger resistance at the nozzle ring of the vertical mill, so that the power consumption of the raw material internal circulation vertical mill final grinding system is higher; the powder selecting system of the final grinding system of the roller press adopts an external circulation powder selecting system, the resistance of the powder selecting airflow is low, and the power consumption of the system grinding is further reduced, so that the system is a more commonly used raw material grinding system at present.
The final grinding system of the roller press generally adopts a structural mode of 'the roller press + a V-shaped powder concentrator + a fine powder concentrator', the fine powder concentrator is divided into a horizontal type powder concentrator and a vertical type powder concentrator, the horizontal type powder concentrator cannot control the fineness of raw materials, and then calcination of a cement kiln system is influenced, so that the vertical type fine powder concentrator is mostly adopted.
However, the lower part of a rotor cage of the existing vertical fine powder concentrator is conical, the size of an air inlet is small, the position of the rotor cage is large, powder selecting airflow upwards enters the rotor cage along a blanking cone, V-selected fine powder is brought into the vertical fine powder concentrator by the powder selecting airflow, the wind speed is gradually reduced, partial fine powder can generate a sedimentation phenomenon along with the reduction of the wind speed, and even some fine powder meeting the requirement of raw material granularity can be settled; in addition, when the work of the roller press fluctuates, the amount of the powder brought into the fine powder concentrator by the V-type separator fluctuates, so that the concentration of the powder in the airflow is higher, the material carrying capacity of the airflow is weakened, and partial powder is settled; the settled fine powder returns to the steady flow bin and the roller press together with the coarse material for circular extrusion, and the extrusion work effect of the roller press can be further influenced due to the higher content of the fine powder in the material of the roller press, even the roller press vibrates, so that the stability of the system is poorer, the yield and the powder outlet quality of the system are further influenced, and the further improvement is awaited.
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 powder concentration in order to strengthen the air current area material ability in having reduced the air current has reduced the fine powder content of material simultaneously in order to promote the extrusion work effect of roll squeezer to promote system stability, and guaranteed the cement raw materials roll squeezer final grinding system of system's output and play powder quality.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a cement raw material roller press final grinding system comprises a feeding belt conveyor, a V-shaped hopper, a second hopper lift machine, a steady flow bin, a manual valve, an automatic quick stop valve, a roller press and a first hopper lift machine which are sequentially connected along a material path, wherein a discharge hole of the first hopper lift machine is connected with a feed hole of the V-shaped hopper lift machine; still include along powder way a cyclone and chute that link to each other in proper order, still include circulating fan and chute fan, circulating fan's air intake links to each other with the air outlet of a cyclone, and the air outlet of chute fan links to each other its characterized in that with the air intake of chute: the device comprises a cyclone cylinder, a first fine powder concentrator, a second fine powder concentrator, a dust collecting device and a fan, wherein the first fine powder concentrator is connected between an air outlet of the V-type separator and an air inlet of the cyclone cylinder in series; the air outlet of the second fine powder concentrator is connected with the air inlet of the dust collecting device, the air outlet of the dust collecting device is connected with the air inlet of the fan, and the coarse powder outlet is connected with the feed inlet or the upper material spreading port of the steady flow bin.
Preferably, a first air-locking discharge valve is further arranged on the coarse powder outlet, and a second air-locking discharge valve is further arranged on the sedimentation material discharge port.
Preferably, the dust collecting device is a bag collector or a cyclone collector.
Compared with the prior art, the utility model has the advantages of: the utility model discloses first meticulous selection powder machine and the meticulous selection powder machine of second have been set up, and spill the material mouth on the top setting of the meticulous selection powder machine of second, set up the middlings export and subside the material discharge gate in the side of first meticulous selection powder machine simultaneously, the farine that subsides in the first meticulous selection powder machine can be in order to carry out the secondary selection powder through subsiding material discharge gate and middlings export and entering into the meticulous selection powder machine of second, thereby reduce the powder concentration in the air current and take the material ability with the reinforcing air current, prevent simultaneously that the farine from entering into and carry out the circulation extrusion in the roller press, and then reduced the farine content of roller press material with the extrusion work effect that promotes the roller press, thereby system stability has been promoted, and system's output and play powder quality have been guaranteed.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a position diagram of the first airlock blanking valve of the present invention;
fig. 3 is a position diagram of a second airlock blanking valve of the present invention;
fig. 4 is a schematic view of the dust collecting apparatus of the present invention in the form of a cyclone dust collector.
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 fig. 1, a cement raw material roller press final grinding system comprises a feeding belt conveyor 11, a V-type separator 6, a second bucket elevator 7, a steady flow bin 1, a manual valve 2, an automatic rapid stop valve 3, a roller press 4 and a first bucket elevator 5 which are connected in sequence along a material path, wherein a discharge hole of the first bucket elevator 5 is connected with a feed hole of the V-type separator 6; the powder classifying device further comprises a cyclone cylinder 9, a chute 15, a circulating fan 10 and a chute fan 16, wherein the cyclone cylinder 9 and the chute 15 are sequentially connected along a powder path, an air inlet of the circulating fan 10 is connected with an air outlet of the cyclone cylinder 9, an air outlet of the chute fan 16 is connected with an air inlet of the chute 15, the powder classifying device further comprises a first fine powder concentrator 8, a second fine powder concentrator 12, a dust collecting device 13 and a fan 14, the first fine powder concentrator 8 is connected between the air outlet of the V separator 6 and the air inlet of the cyclone cylinder 9 in series, a coarse powder outlet 81 and a sedimentation material discharge port 82 are arranged on the side surface of the fine powder concentrator 8, an upper material scattering port 121 is arranged at the top of the second fine powder concentrator 12, the sedimentation material discharge port 82 is connected with the upper material scattering port 121, and a discharge port at the bottom of the second fine powder concentrator 12 is connected with a feed inlet of the steady flow bin 1; the air outlet of the second fine powder concentrator 12 is connected with the air inlet of the dust collecting device 13, the air outlet of the dust collecting device 13 is connected with the air inlet of the fan 14, and the coarse powder outlet 81 is connected with the feed inlet or the upper material spreading port 121 of the steady flow bin 1.
The dust collecting device 13 is a bag type dust collector or a cyclone type dust collector.
As shown in fig. 2, the coarse powder outlet 81 is further provided with a first air-locking blanking valve 17, and the first air-locking blanking valve 17 can prevent air in the steady flow bin 1 from entering the first fine powder concentrator 8 in the process that coarse powder enters the steady flow bin 1, so as to play a role in blanking and air locking.
As shown in fig. 3, the settled material discharge port 82 is further provided with a second air-locking discharge valve 18, and the second air-locking discharge valve 18 can prevent air from entering the first fine powder separator 8 during the discharging process of the settled material in the first fine powder separator 8, so as to perform the same discharging and air-locking functions.
The process flow comprises the following steps:
(1) feeding the proportioned fresh raw materials into a V-shaped separator 6 through a feeding belt conveyor 11; meanwhile, high-temperature kiln tail flue gas from the cement kiln system enters the V-shaped separator 6 through an air inlet of the V-shaped separator 6, and the raw materials and high-temperature hot air are mixed in the V-shaped separator 6 to realize drying and primary separation of the raw materials.
(2) And conveying the coarse powder separated by the V-separation 6 into the steady flow bin 1 through the second bucket elevator 7, opening the manual valve 2 and the automatic quick stop valve 3, conveying the coarse powder into the roller press 4 to complete material extrusion, conveying the coarse powder into the V-separation 6 through the first bucket elevator 5, and conveying the coarse powder and fresh raw materials from a batching station into the V-separation 6 again to perform classification and drying.
(3) The fine powder of the V separation 6 rises along with the airflow and is brought into the first fine powder separator 8, the fine powder meeting the requirement of the granularity of the raw material passes through a rotor cage in the first fine powder separator 8 to be selected as a raw material finished product and enters the cyclone cylinder 9 under the action of the circulating fan 10 to complete gas-solid separation, the separated fine powder is sent into a raw material homogenizing warehouse under the action of the chute 15 and the chute fan 16, and the airflow after the gas-solid separation is circulated back to the V separation 6 or sent into a waste gas treatment system through the circulating fan 10; coarse powder which is not selected as raw material finished product enters the steady flow bin 1 through a coarse powder outlet 81 and finally returns to the roller press 4 for circular extrusion.
(4) The fine powder brought into the fine powder separator 8 along with the selected powder airflow is settled due to the gradual reduction of the wind speed in the ascending process, and is discharged from the settled material discharge port 82, and then enters the second fine powder separator 12 through the upper material scattering port 121 on the second fine powder separator 12 to perform secondary powder separation, so that the fine powder conforming to the raw material granularity is selected and enters the dust collecting device 13 under the action of the fan 14 to perform gas-solid separation, and the separated fine powder is mixed with the raw material powder separated by the cyclone 9 to form final raw material; the coarse powder separated by the second fine powder separator 12 is fed into the steady flow bin 1 and finally enters the roller press 4 for circular extrusion.
(5) When the coarse powder outlet 81 is connected to the upper material scattering port 121, coarse powder that is not selected as a raw material finished product enters the second fine powder classifier 12 through the coarse powder outlet 81 and the upper material scattering port 121, and then secondary powder classification is performed together with fine powder discharged from the settled material discharge port 82, so that the content of the fine powder of the raw material entering the roller press 4 is reduced to realize stable and efficient work of the roller press 4, as shown in fig. 3.
The utility model discloses first meticulous selection powder machine 8 and the meticulous selection powder machine 12 of second have been set up, and spill material mouth 121 on the top setting of the meticulous selection powder machine 12 of second, set up middlings export 81 and subside material discharge gate 82 in the side of first meticulous selection powder machine 8 simultaneously, the fine powder that subsides in the first meticulous selection powder machine 8 can be in order to carry out the secondary selection powder through subsiding material discharge gate 82 and middlings export 81 and entering into the meticulous selection powder machine 12 of second, thereby reduce the powder concentration in the air current and take the material ability with the reinforcing air current, prevent simultaneously that the fine powder from entering into and carry out the extrusion in the roller press 4, and then the fine powder content that has reduced roller press 4 material does the merit effect with the extrusion of promotion roller press 4, thereby system stability has been promoted, and system's output and play powder quality have been guaranteed.
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 (3)
1. A cement raw material roller press final grinding system comprises a feeding belt conveyor, a V-shaped hopper, a second hopper lift machine, a steady flow bin, a manual valve, an automatic quick stop valve, a roller press and a first hopper lift machine which are sequentially connected along a material path, wherein a discharge hole of the first hopper lift machine is connected with a feed hole of the V-shaped hopper lift machine; still include along powder way a cyclone and chute that link to each other in proper order, still include circulating fan and chute fan, circulating fan's air intake links to each other with the air outlet of a cyclone, and the air outlet of chute fan links to each other its characterized in that with the air intake of chute: the device comprises a cyclone cylinder, a first fine powder concentrator, a second fine powder concentrator, a dust collecting device and a fan, wherein the first fine powder concentrator is connected between an air outlet of the V-type separator and an air inlet of the cyclone cylinder in series; the air outlet of the second fine powder concentrator is connected with the air inlet of the dust collecting device, the air outlet of the dust collecting device is connected with the air inlet of the fan, and the coarse powder outlet is connected with the feed inlet or the upper material spreading port of the steady flow bin.
2. The cement raw material roller press final grinding system according to claim 1, characterized in that: and a first air locking discharge valve is also arranged on the coarse powder outlet, and a second air locking discharge valve is also arranged on the sedimentation material discharge port.
3. The cement raw material roller press final grinding system according to claim 1, characterized in that: the dust collecting device is a bag type dust collector or a cyclone type dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022833731.8U CN214320448U (en) | 2020-11-30 | 2020-11-30 | Cement raw material roller press final grinding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022833731.8U CN214320448U (en) | 2020-11-30 | 2020-11-30 | Cement raw material roller press final grinding system |
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| Publication Number | Publication Date |
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| CN214320448U true CN214320448U (en) | 2021-10-01 |
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| CN202022833731.8U Active CN214320448U (en) | 2020-11-30 | 2020-11-30 | Cement raw material roller press final grinding system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473994A (en) * | 2020-11-30 | 2021-03-12 | 南京凯盛国际工程有限公司 | Cement raw material roller press final grinding system and technological process thereof |
| CN114405644A (en) * | 2022-01-21 | 2022-04-29 | 上海山美环保装备股份有限公司 | Dry aggregate pre-sorting system and floor type sand making process system |
-
2020
- 2020-11-30 CN CN202022833731.8U patent/CN214320448U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473994A (en) * | 2020-11-30 | 2021-03-12 | 南京凯盛国际工程有限公司 | Cement raw material roller press final grinding system and technological process thereof |
| CN114405644A (en) * | 2022-01-21 | 2022-04-29 | 上海山美环保装备股份有限公司 | Dry aggregate pre-sorting system and floor type sand making process system |
| CN114405644B (en) * | 2022-01-21 | 2023-09-26 | 上海山美环保装备股份有限公司 | Dry aggregate pre-sorting system and building-type sand making process 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. |