CN211726097U - High-precision particle size powder processing system - Google Patents
High-precision particle size powder processing system Download PDFInfo
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- CN211726097U CN211726097U CN201922232750.2U CN201922232750U CN211726097U CN 211726097 U CN211726097 U CN 211726097U CN 201922232750 U CN201922232750 U CN 201922232750U CN 211726097 U CN211726097 U CN 211726097U
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- dust remover
- intercommunication
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- 239000002245 particle Substances 0.000 title claims description 12
- 238000009700 powder processing Methods 0.000 title claims description 11
- 239000000428 dust Substances 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims abstract description 28
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 208000011580 syndromic disease Diseases 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 14
- 239000002006 petroleum coke Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The utility model discloses a high accuracy granularity powder system of processing, including former feed bin, the batcher, numerical control hydraulic pressure station, the mill, the dust remover, the fan, the chimney, finished product feed bin and controller, batcher and former feed bin intercommunication, batcher and mill intercommunication, numerical control hydraulic pressure station and mill intercommunication, mill and dust remover intercommunication, dust remover and finished product feed bin intercommunication, dust remover and fan intercommunication, fan and chimney intercommunication, the air intake of mill has cold wind through the cold air valve intercommunication, the air outlet of chimney communicates through the air intake of return air valve with the mill, the discharge gate of mill is provided with temperature sensor, cold air valve and return air valve all are connected with the controller electricity. The utility model provides a high accuracy granularity powder system of processing can stabilize the mill and exert oneself, stable system wind-force, accurate control system of processing's wind-warm syndrome.
Description
Technical Field
The utility model belongs to the preparation field of vertical roller mill processing petroleum coke powder, concretely relates to high accuracy granularity powder processing system.
Background
The petroleum coke is used as a byproduct of the oil refining process and has the characteristics of high heat value, low volatile component, stable components, little moisture and ash content and the like, so the petroleum coke is mainly used for preparing carbon products, such as graphite electrodes and anode arcs, and provides steel making, nonferrous metals and aluminum smelting; preparing silicon carbide products, such as various grinding wheels, abrasive paper and the like; as industrial fuels, etc. In some special application environments, in order to pursue that the finished product powder can stably exert the performance, a relatively precise requirement is provided for the stability of the average fineness of the finished product of the petroleum coke, and in some cases, the fineness of the finished product is required to be controlled within 200 meshes, and the sieving rate is 80% +/-2.
At present, in a traditional mill powder preparation system, feeding is unstable due to low control precision of feeding of a mill; the dust remover adopts timing interval blowing to cause uncontrollable integral resistance of the dust remover; the fan is controlled by an air door, so that the air quantity is suddenly high or low; the grinding pressure of the grinder is manually controlled, and the grinding pressure is greatly changed; the mill powder selecting machine adopts electromagnetic speed regulation or variable air door control, so that the vertical mill pressure difference cannot be accurately controlled; do not have temperature measuring device in the export of founding the mill, cause to found mill export temperature can not be stable, and then not good to system windage control, above factor causes the system stability poor, and the concrete expression does: the conditions of unstable mill load, unstable system resistance, unstable system wind temperature and the like, and finally the unstable factors can influence the instability of the fineness of the finished product. The common practice in the industry is unidirectional control, for example, the 200-mesh sieve-passing rate of the powder is controlled to be more than 80%, various adjustments are adjusted in one direction, the actual control result is possibly 85% or higher, and the control method is difficult to achieve the requirement of controlling the average fineness of the finished powder. Moreover, when the system is restarted, the reproduction of the system is often poor, and it is often almost impossible to obtain a level of fineness as high as the previous one again.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the above-mentioned prior art, the utility model aims at providing a high progress granularity powder system of processing.
The purpose of the utility model is realized through the following technical scheme.
A high-precision particle size powder processing system comprises a raw material bin, a quantitative feeder, a numerical control hydraulic station, a mill, a dust remover, a fan, a chimney, a finished product bin and a controller, wherein a feed inlet of the quantitative feeder is communicated with a discharge outlet of the raw material bin, a discharge outlet of the quantitative feeder is communicated with a feed inlet of the mill, the numerical control hydraulic station is communicated with the mill and provides hydraulic power for the mill, a discharge outlet of the mill is communicated with a feed inlet of the dust remover, a discharge outlet of the dust remover is communicated with a feed inlet of the finished product bin, an air outlet of the dust remover is communicated with an air inlet of the fan, an air outlet of the fan is communicated with an air inlet of the chimney, an air inlet of the mill is communicated with cold air through a cold air; the cold air valve and the return air valve are both electrically connected with the controller.
And the discharge port of the mill is provided with an online granularity detector which is electrically connected with the controller.
The air inlet of mill is provided with first wind pressure sensor, and the air outlet of mill is provided with the second wind pressure sensor, and first wind pressure sensor and second wind pressure sensor all are connected with the controller electricity.
And a discharge port of the mill is provided with a temperature sensor which is electrically connected with the controller.
The upper part of the mill is a powder concentrator which comprises a first variable frequency motor, and the first variable frequency motor is connected with the controller.
The fan include a variable frequency motor, first variable frequency motor is connected with the controller electricity.
The dust remover is a pulse bag dust remover.
The utility model has the advantages that: the utility model provides a high accuracy granularity powder system of processing through the feeding volume of the stable mill of batcher control feed precision, realizes the control that becomes more meticulous, through the effect of numerical control hydraulic pressure station stable control mill grinding pressure, realizes stabilizing the purpose that the mill exerted force through batcher and numerical control hydraulic pressure station. The temperature sensor is arranged at the outlet of the mill, the cold air valve and the air return valve are arranged in the processing system, so that the temperature at the outlet of the mill is set at a reasonable target value, the cold air valve and the air return valve are controlled by the temperature sensor and the controller, the air temperature of the processing system is adjusted, and the effect of accurately controlling the air temperature is achieved. The utility model provides a high accuracy granularity powder system of processing can stabilize the mill and exert oneself, stable system wind-force, accurate control system of processing's wind-warm syndrome.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is a raw material bin, 2 is a constant feeder, 3 is a mill, 4 is an online particle size detector, 5 is a dust remover, 6 is a fan, 7 is a chimney, 8 is an air return valve, 9 is a pipeline, 10 is a finished product bin, and 11 is a cold air valve.
Detailed Description
As shown in fig. 1, a high-precision particle size powder processing system is used in a preparation system for processing petroleum coke powder by a vertical roller mill, and is used for solving the problem of the width of the fineness range of the petroleum coke finished product powder processed by a milling system, and the processing system works in a negative pressure state. The processing system comprises a raw material bin 1, a constant feeder 2, a numerical control hydraulic station, a mill 3, a dust remover 5, a fan 6, a chimney 7, a finished product bin 10, a controller and a pipeline 9 for communicating all the parts.
The feed inlet of the constant feeder 2 is communicated with the discharge outlet of the raw material bin 1, and the discharge outlet of the constant feeder 2 is communicated with the feed inlet of the mill 3. The constant feeder 2 has the control functions of weighing and constant feeding, can control feeding, further stabilize the feeding amount of the mill 3, and realize refined control.
The numerical control hydraulic station is communicated with the mill 3 and provides hydraulic power for the mill 3. The numerical control hydraulic station is a numerical control hydraulic system, changes acting force by changing pressure intensity, has the functions of automatically controlling and digitally adjusting hydraulic force, and further adjusts the grinding pressure of the grinding machine 3. The output of the mill is stabilized through the constant feeder 2 and the numerical control hydraulic station.
The upper part of the mill 3 is a powder selecting machine which comprises a first variable frequency motor connected with a controller, the powder selecting machine is driven by the first variable frequency motor, the variable frequency control of the powder selecting machine is realized, and the purpose of adjusting the fineness of the powder is achieved by adjusting the rotating speed of the powder selecting machine.
The discharge hole of the mill 3 is communicated with the feed inlet of the dust remover 5, the discharge hole of the dust remover 5 is communicated with the feed inlet of the finished product bin 10, and the air outlet of the dust remover 5 is communicated with the air inlet of the fan 6. The dust remover 5 is a pulse bag dust remover which has a constant pressure difference control function, and can stabilize the system resistance of the dust remover 5 and eliminate the influence of the wind fluctuation of the system on the powder selection precision under the condition of certain wind quantity and dust concentration.
The fan 6 comprises a first variable frequency motor which is electrically connected with the controller. The fan 6 is driven by a second variable frequency motor and realizes variable frequency control, so that the influence of fluctuation of air volume on a processing system is eliminated.
The air outlet of the fan 6 is communicated with the air inlet of the chimney 7, the air inlet of the mill 3 is communicated with cold air through the cold air valve 11, the cold air valve 11 is used for controlling the amount of cold air entering the mill 3, the air outlet of the chimney 7 is communicated with the air inlet of the mill 3 through the air return valve 8, the air return valve 8 is used for controlling the amount of hot air entering the mill 3, a temperature sensor is arranged at a discharge port of the mill 3, the cold air valve 11 and the air return valve 8 are both electrically operated valves, and the temperature sensor, the cold air valve 11 and the air return valve 8 are all electrically connected with a. The controller is internally provided with a threshold value, the temperature sensor transmits the detected temperature value to the controller, and the controller controls the cold air valve and the return air valve according to the threshold value to realize the adjustment of the air temperature of the system, so that the temperature at the outlet of the mill 3 is stabilized on a reasonable target value, and finally the effect of accurately controlling the air temperature of the system is achieved. It should be noted that the controller is a commonly used control means, and the present invention is not described in detail. The cold air valve 11 is communicated with cold air, the return air valve 8 is communicated with hot air, and the hot air is heated by the mill, the dust remover and the chimney.
Furthermore, an online granularity detector 4 is arranged at a discharge port of the mill 3, the online granularity detector 4 is connected to a pipeline 9 between the mill 3 and the dust remover 5, and the online granularity detector 4 is electrically connected with the controller. The online granularity detector 4 is used for monitoring the granularity and fineness of the powder in real time, converting the monitored average granularity and fineness into an electric signal and transmitting the electric signal to the controller, and the controller adjusts the rotation speed of the powder concentrator according to a threshold value so as to reach a required fineness interval.
The utility model discloses a working method does: the system works in a negative pressure state, raw materials are stored in a large raw material bin 1 and enter a mill 3 for grinding through a quantitative feeder 2 with weighing and quantitative control functions at the lower part, air quantity required by the system is provided through a fan 6 controlled by frequency conversion, a part of the air quantity enters the mill 3 through an air cooling valve 11, the wind power drives powdery particles ground by the mill 3 to enter a powder concentrator on the upper part of the mill 3, qualified wind is conveyed to a pulse bag dust collector with a constant pressure difference control function through a part of pipelines 9 by the air quantity to be collected, and the collected powder is transported to a finished product bin 10 to be stored. The crystallization tail gas separated by the pulse bag-type dust collector is discharged to the atmosphere from a chimney 7 through a part of pipelines 9 and a fan 6 in sequence, and the other part of the tail gas enters the mill 3 again through an air return valve 8 and a part of pipelines 9 to provide hot air for the mill 3.
A temperature sensor is arranged at a discharge port of the mill 3, a temperature threshold value is set in a controller, and when the temperature value of the wind detected by the temperature sensor is lower than the temperature threshold value, the controller reduces the opening degree of the cold air valve 11 according to the threshold value and increases the opening degree of the return air valve 8, so that the temperature of the wind approaches a reasonable target value; when the temperature of the wind detected by the temperature sensor is higher than the temperature threshold value, the controller increases the opening degree of the cold air valve 11 according to the threshold value and decreases the opening degree of the return air valve 8, so that the temperature of the wind approaches a reasonable target value.
The material outlet of the mill 3 is connected with a line granularity detector 4, a fineness threshold value is set in a controller, the condition of the granularity fineness of the powder is monitored by the line granularity detector 4 in real time, the monitored condition of the average granularity fineness is converted into an electric signal and transmitted to the controller, and when the granularity fineness is detected to be larger than the fineness threshold value, the controller controls a first variable frequency motor, the rotating speed of the powder concentrator is increased, and the granularity fineness is close to the fineness threshold value; when the fineness of granularity is smaller than the fineness threshold value, the controller controls the first variable frequency motor to reduce the rotation speed of the powder concentrator, so that the fineness of granularity is close to the fineness threshold value.
Through the structure and the relation of connection, the utility model discloses a system of processing has stable mill and gives force, stable system wind-warm syndrome, and then, through the signal of telecommunication of online granularity detector 4 output, the rotational speed of controller control selection powder machine to it is interval to obtain the finished product fineness of ideal.
Different with the aforesaid setting mode, be provided with first wind pressure sensor at the air intake of mill 3, the air outlet of mill 3 is provided with second wind pressure sensor, first wind pressure sensor and second wind pressure sensor all are connected with the controller electricity, the wind pressure that 3 imports and exports of mill that first wind pressure sensor and second wind pressure sensor will detect is transmitted for the controller, the controller obtains the pressure differential that the mill was imported and exported according to the threshold value, the effect that online granularity detector 4 reached can be obtained equally. Or the absolute negative pressure of the air outlet of the mill 3 is detected, and the effect achieved by the online granularity detector 4 can be obtained.
The above description is only a preferred embodiment of the present invention, and is not a limitation to the technical solution of the present invention, it should be noted that, further improvements and changes can be made by those skilled in the art on the premise of the technical solution of the present invention, and all such improvements and changes should be covered in the protection scope of the present invention.
Claims (7)
1. The utility model provides a high accuracy granularity powder system of processing which characterized in that: the grinding machine comprises a raw material bin, a quantitative feeder, a numerical control hydraulic station, a grinding machine, a dust remover, a fan, a chimney, a finished product bin and a controller, wherein a feed inlet of the quantitative feeder is communicated with a discharge outlet of the raw material bin; the cold air valve and the return air valve are both electrically connected with the controller.
2. The high-precision particle size powder processing system according to claim 1, wherein: and the discharge port of the mill is provided with an online granularity detector which is electrically connected with the controller.
3. The high-precision particle size powder processing system according to claim 1, wherein: the air inlet of mill is provided with first wind pressure sensor, and the air outlet of mill is provided with the second wind pressure sensor, and first wind pressure sensor and second wind pressure sensor all are connected with the controller electricity.
4. The high-precision particle size powder processing system according to claim 1, wherein: and a discharge port of the mill is provided with a temperature sensor which is electrically connected with the controller.
5. The high-precision particle size powder processing system according to claim 1, wherein: the upper part of the mill is a powder concentrator which comprises a first variable frequency motor, and the first variable frequency motor is connected with the controller.
6. The high-precision particle size powder processing system according to claim 1, wherein: the fan include a variable frequency motor, first variable frequency motor is connected with the controller electricity.
7. The high-precision particle size powder processing system according to claim 1, wherein: the dust remover is a pulse bag dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922232750.2U CN211726097U (en) | 2019-12-13 | 2019-12-13 | High-precision particle size powder processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922232750.2U CN211726097U (en) | 2019-12-13 | 2019-12-13 | High-precision particle size powder processing system |
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| CN211726097U true CN211726097U (en) | 2020-10-23 |
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| CN201922232750.2U Active CN211726097U (en) | 2019-12-13 | 2019-12-13 | High-precision particle size powder processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289161A (en) * | 2021-12-31 | 2022-04-08 | 河南黎明重工科技股份有限公司 | System for be used for preparing CFB power plant desulfurization limestone flour |
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2019
- 2019-12-13 CN CN201922232750.2U patent/CN211726097U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289161A (en) * | 2021-12-31 | 2022-04-08 | 河南黎明重工科技股份有限公司 | System for be used for preparing CFB power plant desulfurization limestone flour |
| CN114289161B (en) * | 2021-12-31 | 2023-10-24 | 河南黎明重工科技股份有限公司 | System for preparing CFB power plant desulfurized limestone powder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231226 Address after: No. 139 Science Avenue, High tech Industrial Development Zone, Zhengzhou City, Henan Province, 450000 Patentee after: Liming Heavy Industry Co.,Ltd. Address before: 450001 No.169, science Avenue, high tech Zone, Zhengzhou City, Henan Province Patentee before: HENAN LIMING HEAVY INDUSTRY & SCIENCE Co.,Ltd. |
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| TR01 | Transfer of patent right |