CN114377842B - Material fineness adjusting method and device, computer equipment and storage medium - Google Patents
Material fineness adjusting method and device, computer equipment and storage medium Download PDFInfo
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- CN114377842B CN114377842B CN202111608927.XA CN202111608927A CN114377842B CN 114377842 B CN114377842 B CN 114377842B CN 202111608927 A CN202111608927 A CN 202111608927A CN 114377842 B CN114377842 B CN 114377842B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/22—Matching criteria, e.g. proximity measures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The application relates to a method and a device for adjusting fineness of materials, computer equipment and a storage medium. The method is applied to a pulverizer including a classification wheel, comprising: acquiring fineness of a material and processing the material to obtain target fineness; determining a processing mode matched with the target fineness according to the target fineness when the fineness is out of a preset range of the target fineness, wherein the type of the processing mode has a preset association relationship with a fineness interval in which the target fineness is located; and processing the material according to the processing mode until the fineness after processing is within the preset range. By adopting the method, the full-automatic adjustment of the fineness of the materials can be realized according to the fineness of the materials and the target fineness, and the accuracy of adjustment is improved, so that the quality and the crushing efficiency of the products are improved.
Description
Technical Field
The present disclosure relates to the field of material crushing, and in particular, to a method and an apparatus for adjusting fineness of a material, a computer device, and a storage medium.
Background
The existing pulverizer system mainly comprises a pulverizing mechanism, a classifying mechanism and an air conveying system. The classifying mechanism has the function of separating small particle material meeting the fineness requirement from the crushing chamber and forcing large particle material to return to the crushing chamber to continuously receive the impact of the crushing mechanism. Among them, a classification mechanism generally adopts a structure of a classification wheel.
In the traditional crushing technology, the production is started by manually setting the rotating speed of the classifying wheel according to experience, a crushed material sample is obtained in the production process, the sieving rate of the crushed material of the sample is checked, and the rotating speed of the classifying wheel is adjusted according to experience according to the sieving rate. However, under the actual condition that the pulverized materials are different and the air quantity of the system is changed frequently, a one-to-one correspondence relation does not exist between the rotating speed of the classifying wheel and the fineness, and accurate adjustment is difficult to carry out manually through experience, so that the manual adjustment accuracy is low, and the quality of a product is unstable and the efficiency is low.
Disclosure of Invention
Based on the foregoing, it is necessary to provide a method, an apparatus, a computer device and a storage medium for adjusting fineness of materials, which can improve quality and efficiency of products.
In a first aspect, the present application provides a method for adjusting fineness of a material. The method is applied to a pulverizer including a classification wheel, comprising:
acquiring fineness of a material and processing the material to obtain target fineness;
determining a processing mode matched with the target fineness according to the target fineness when the fineness is out of a preset range of the target fineness, wherein the type of the processing mode has a preset association relationship with a fineness interval in which the target fineness is located;
and processing the material according to the processing mode until the fineness after processing is within the preset range.
In one embodiment, determining a processing mode matched with the target fineness according to the target fineness, where a type of the processing mode and a fineness interval in which the target fineness is located have a preset association relationship, and the determining includes:
when the target fineness is in the first fineness interval, determining the processing mode includes: and setting the air quantity of the pulverizer as a first threshold value, and adjusting up or down the rotating speed of the classifying wheel.
In one embodiment, the processing the material according to the processing manner until the fineness after processing is within the preset range includes:
When the fineness is smaller than the minimum value of the preset range, the rotating speed of the grading wheel is adjusted upwards by a first preset value until the fineness after processing is within the preset range;
and when the fineness is larger than the maximum value of the preset range, the rotating speed of the grading wheel is adjusted downwards by a second preset value until the fineness after processing is within the preset range.
In one embodiment, determining a processing mode matched with the target fineness according to the target fineness, where a type of the processing mode and a fineness interval in which the target fineness is located have a preset association relationship, and the determining includes:
when the target fineness is in the second fineness interval, determining the processing mode includes: and (3) up-regulating the air quantity of the pulverizer and down-regulating the rotating speed of the classifying wheel, or down-regulating the air quantity of the pulverizer and up-regulating the rotating speed of the classifying wheel.
In one embodiment, the processing the material according to the processing manner until the fineness after processing is within the preset range includes:
when the fineness is smaller than the minimum value of the preset range, the rotating speed of the grading wheel is adjusted up by a first preset value, and the air quantity of the pulverizer is adjusted down by a third preset value until the fineness after processing is within the preset range;
And when the fineness is larger than the maximum value of the preset range, the rotating speed of the classifying wheel is adjusted downwards by a second preset value, and the air quantity of the pulverizer is adjusted upwards by a fourth preset value until the fineness after processing is within the preset range.
In one embodiment, determining a processing mode matched with the target fineness according to the target fineness, where a type of the processing mode and a fineness interval in which the target fineness is located have a preset association relationship, and the determining includes:
when the target fineness is in the third fineness interval, determining the processing mode includes: setting the rotating speed of the classifying wheel as a second threshold value, and adjusting the air quantity of the pulverizer up or down.
In one embodiment, the processing the material according to the processing manner until the fineness after processing is within the preset range includes:
when the fineness is smaller than the minimum value of the preset range, the air quantity of the pulverizer is adjusted downwards by a third preset value;
and when the fineness is larger than the maximum value of the preset range, the air quantity of the pulverizer is adjusted upwards by a fourth preset value.
In a second aspect, the application also provides a device for adjusting the fineness of materials. The device is applied to a pulverizer, the pulverizer including a classification wheel, comprising:
The acquisition module is used for acquiring the fineness of the material and the target fineness to be achieved by processing the material;
the determining module is used for determining a processing mode matched with the target fineness according to the target fineness when the fineness is out of a preset range of the target fineness, wherein the type of the processing mode has a preset association relationship with a fineness range in which the target fineness is located;
and the processing module is used for processing the materials according to the processing mode until the processed fineness is within the preset range.
In one embodiment, the determining module includes:
the first determining module is configured to determine, when the target fineness is in a first fineness range, the processing mode includes: and setting the air quantity of the pulverizer as a first threshold value, and adjusting up or down the rotating speed of the classifying wheel.
In one embodiment, the process module comprises:
the first processing submodule is used for adjusting the rotating speed of the grading wheel by a first preset value when the fineness is smaller than the minimum value of the preset range until the fineness after processing is within the preset range;
and the second processing submodule is used for adjusting the rotating speed of the grading wheel by a second preset value when the fineness is larger than the maximum value of the preset range until the processed fineness is within the preset range.
In one embodiment, the determining module includes:
the second determining module is configured to determine, when the target fineness is in a second fineness interval, the processing mode includes: and (3) up-regulating the air quantity of the pulverizer and down-regulating the rotating speed of the classifying wheel, or down-regulating the air quantity of the pulverizer and up-regulating the rotating speed of the classifying wheel.
In one embodiment, the processing module comprises:
the first processing submodule is used for adjusting the rotating speed of the grading wheel up to a first preset value when the fineness is smaller than the minimum value of the preset range, and adjusting the air quantity of the pulverizer down to a third preset value until the fineness after processing is within the preset range;
and the second processing submodule is used for adjusting the rotating speed of the grading wheel downwards by a second preset value and adjusting the air quantity of the pulverizer upwards by a fourth preset value when the fineness is larger than the maximum value of the preset range until the fineness after processing is within the preset range.
In one embodiment, the determining module includes:
the third determining module is configured to determine, when the target fineness is in a third fineness interval, the processing mode includes: setting the rotating speed of the classifying wheel as a second threshold value, and adjusting the air quantity of the pulverizer up or down.
In one embodiment, the processing module includes:
the first processing submodule is used for downwards regulating the air quantity of the pulverizer by a third preset value when the fineness is smaller than the minimum value of the preset range;
and the second processing submodule is used for adjusting the air quantity of the pulverizer to a fourth preset value when the fineness is larger than the maximum value of the preset range.
In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor implementing the steps of the method of any of the embodiments of the present disclosure when the computer program is executed.
In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the method of any of the embodiments of the present disclosure.
In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of the method according to any of the embodiments of the present disclosure.
The method, the device, the computer equipment, the storage medium and the computer program product for adjusting the fineness of the materials are characterized in that firstly, the target fineness and the material crushing fineness which are required to be achieved by processing the materials are obtained, when the fineness of the materials is not within the preset range of the target fineness, the processing mode matched with the target fineness is determined, and then the materials are processed according to the processing mode, so that the fineness of the processed materials is within the preset range of the target fineness. According to the embodiment of the disclosure, the fineness of the material and the target fineness can be fully automatically adjusted, so that the accuracy of adjustment is improved, and the product quality and the crushing efficiency are improved.
Drawings
FIG. 1 is a system block diagram of a shredder in one embodiment;
FIG. 2 is a flow chart of a method for adjusting fineness of a material according to an embodiment;
FIG. 3 is a flow chart of a method for adjusting fineness of a material according to an embodiment;
FIG. 4 is a flow chart of a method for adjusting fineness of a material according to an embodiment;
FIG. 5 is a block diagram of an apparatus for adjusting fineness of a material in one embodiment;
fig. 6 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Fig. 1 is a system configuration diagram of a pulverizer according to an exemplary embodiment, and referring to fig. 1, the pulverizer system includes a bin to be pulverized, a superfine pulverizer main body, a saxophone (i.e., cyclone), a pulse dust collector, and a fan, and a particle size/fineness online detection system may be further added to the pulverizer system to detect fineness of a material after production, where the particle size/fineness online detection system may be installed at a, i.e., behind a classification system in the pulverizer, or at B, i.e., behind a subsequent sieving device.
In one embodiment, as shown in fig. 2, a method of adjusting fineness of a material is provided, and this embodiment is exemplified by the method applied to a pulverizer including a classification wheel. In this embodiment, the method includes the steps of:
step S201, acquiring fineness of a material and target fineness to be achieved by processing the material;
when the pulverizer is used for pulverizing, the fineness of the pulverized materials is different due to the different parameters such as the rotating speed of a classifying wheel of the pulverizer and the air quantity of a system. When the materials are crushed, the required fineness of the crushed materials is different according to the purposes of the materials and the like, and the target fineness is the fineness of the processed materials which is required to be achieved when the materials are crushed.
In the embodiment of the disclosure, when the material is crushed, the target fineness of the material to be processed and the fineness of the material processed by the crusher are obtained. In one example, the fineness of the material is typically obtained by a particle size on-line monitoring system, which may be based on various principles, such as laser-based particle size distribution, machine vision based principles, and the like. According to actual production needs, the particle size on-line monitoring system can be arranged behind a classification system in the pulverizer, and can also be arranged behind subsequent screening equipment. In one example, the particle size distribution instrument gives a result that is often a probability density distribution over the full size range; in different industries, the fineness is characterized in different ways, and a conversion is needed in the middle. Taking superfine grinding operation in the feed processing industry as an example, the fineness requirement of a certain feed product on the crushed materials is generally characterized by a sieving rate of 80 meshes, for example: the 80 mesh passing rate is over 95% +/-0.5%. The pore size corresponding to 80 mesh is 0.18mm, then: 80 mesh
The particle size on-line monitoring system can crush the particles according to the set sampling frequencyThe granularity distribution of the rear material is fed back to a fineness control system; the control system converts the particle size distribution into a 80 mesh sieve ratio and then compares it with a fineness standard. For example: the current 80-mesh passing rate is 94.8%, the current fineness is considered to be qualified, and the fineness adjustment is not carried out on the system. If the current 80-mesh passing rate is 93%, the control system can improve the fineness of the materials; and vice versa.
Step S202, determining a processing mode matched with the target fineness according to the target fineness when the fineness is out of a preset range of the target fineness, wherein the type of the processing mode has a preset association relationship with a fineness interval in which the target fineness is located;
in the embodiment of the disclosure, after the target fineness and the fineness of the material processed by the pulverizer are obtained, it is determined whether the fineness of the material is within a preset range of the target fineness, where the preset range of the target fineness is generally an error allowable range of the preset target fineness, in one example, when a certain feed product is pulverized, the fineness requirement of the pulverized material is represented by a 80-mesh sieving rate, and when the target fineness requirement is 95%, the preset range of the target fineness may be set to be 95% ± 0.5% of the 80-mesh passing rate. When the fineness of the material is out of the preset range of the target fineness, the fact that the fineness of the crushed material does not meet the fineness requirement at the moment is indicated, and the processing mode of the crusher is required to be changed so as to change the fineness of the crushed material. And determining a processing mode matched with the target fineness according to the acquired target fineness, wherein different processing modes are corresponding according to different target intervals in which the target fineness is positioned. In one example, when different materials are crushed, the fineness interval is divided into a first fineness interval, a second fineness interval and a third fineness interval according to the fineness from low to high, and the fineness interval division manner can comprise various standards. The three fineness intervals correspond to three processing modes respectively, and different processing modes are usually modes of adopting different adjustment on the rotating speed and the air quantity of the classifying wheel in the material crushing process.
And step 203, processing the material according to the processing mode until the processed fineness is within the preset range.
In the embodiment of the disclosure, after determining a processing mode corresponding to a target fineness, according to the fineness of a crushed material under a current processing parameter, adjusting the rotating speed of a classifying wheel and the air quantity of a crusher according to the processing mode, detecting the fineness of the crushed material again after adjustment, if the fineness is still outside a preset range of the target fineness, continuing to adjust the processing mode of the crusher according to the adjustment process until the fineness of the processed material is within the preset range of the target fineness, keeping the parameter unchanged until the next sampling period is reached, resampling after the next sampling period, and adjusting the processing mode according to a sampling result. In one example, the step wheel speed may be varied by driving the step wheel motor through a frequency converter. In another example, the air quantity of the pulverizer can be regulated on line through an automatic air door arranged in front of the fan, and a variable frequency fan can be also adopted to regulate the air quantity of the pulverizer by regulating the rotating speed of the fan.
According to the embodiment of the disclosure, the target fineness and the material crushing fineness which are required to be achieved by processing the material are firstly obtained, when the material fineness is not within the preset range of the target fineness, the processing mode matched with the target fineness is determined, and then the material is processed according to the processing mode so that the processed material fineness is within the preset range of the target fineness. According to the embodiment of the disclosure, the fineness of the material and the target fineness can be fully automatically adjusted, so that the accuracy of adjustment is improved, and the product quality and the crushing efficiency are improved.
In one embodiment, the determining a processing mode matched with the target fineness according to the target fineness, where a type of the processing mode has a preset association relationship with a fineness interval in which the target fineness is located, includes:
when the target fineness is in the first fineness interval, determining the processing mode includes: and setting the air quantity of the pulverizer as a first threshold value, and adjusting up or down the rotating speed of the classifying wheel.
In the embodiment of the disclosure, when the target fineness is in the first fineness interval, that is, when the fineness requirement is low fineness, at the moment, the crushed particles are larger, the influence of the air quantity of the crusher on the fineness of the processed material is smaller, and therefore, a better effect can be obtained by adjusting the rotating speed of the classifying wheel. Therefore, at this time, the processing adjustment mode is to set the system air quantity of the pulverizer as a first threshold value, wherein the first threshold value is usually a fixed value at a high position, and the rotating speed of the classification wheel is adjusted up or down according to the acquired fineness of the pulverized material. The feedback control mechanism of the step wheel rotating speed adjustment can adopt a PID mode.
According to the embodiment of the disclosure, when the target fineness is in the first fineness interval, the influence of different parameters on the fineness of the crushed materials at the moment is considered, the system air quantity is set to be a fixed value, and the rotating speed of the classifying wheel is adjusted up or down. According to the method and the device for adjusting the fineness of the crusher, the processing mode of the crusher when the target fineness is located in the first fineness range can be determined, and therefore a good adjusting effect can be achieved.
In one embodiment, the processing the material according to the processing mode until the fineness after processing is within the preset range includes:
when the fineness is smaller than the minimum value of the preset range, the rotating speed of the grading wheel is adjusted upwards by a first preset value until the fineness after processing is within the preset range;
and when the fineness is larger than the maximum value of the preset range, the rotating speed of the grading wheel is adjusted downwards by a second preset value until the fineness after processing is within the preset range.
In the embodiment of the disclosure, when the target fineness is in the first fineness interval, and the fineness of the crushed material is lower than the minimum value of the preset range, that is, the fineness of the crushed material is lower, the crushing fineness needs to be improved. At this time, the rotating speed of the classifying wheel is adjusted up to a first preset value, the diameter of the material allowed to pass through is reduced, and the fineness of the crushed material is improved. The first preset value is an up-regulating value of the rotating speed of the classifying wheel in one-time regulating process. When the fineness of the crushed material is higher than the maximum value of the preset range, that is, the fineness of the crushed material is higher, the crushing fineness needs to be reduced. At this time, the rotating speed of the classifying wheel is adjusted downwards by a second preset value, the diameter of the material allowed to pass through is increased, and the fineness of the crushed material is reduced. The second preset value is a down-regulating value of the rotating speed of the classifying wheel in one-time regulating process. Judging whether the fineness of the crushed materials after adjustment is within a preset range, and if so, completing adjustment.
According to the embodiment of the disclosure, when the target fineness is in the first fineness interval, the rotating speed of the classifying wheel is adjusted according to the difference of the fineness of crushed materials. According to the embodiment of the disclosure, when the target fineness is in the first fineness interval, the rotating speed of the classifying wheel can be adjusted, so that the fineness of the crushed materials after adjustment meets the requirement.
In one embodiment, determining a processing mode matched with the target fineness according to the target fineness, where a type of the processing mode and a fineness interval in which the target fineness is located have a preset association relationship, and the determining includes:
when the target fineness is in the second fineness interval, determining the processing mode includes: and (3) up-regulating the air quantity of the pulverizer and down-regulating the rotating speed of the classifying wheel, or down-regulating the air quantity of the pulverizer and up-regulating the rotating speed of the classifying wheel.
In the embodiment of the disclosure, when the target fineness is in the second fineness interval, that is, when the fineness requirement is medium fineness, at this time, the air quantity of the pulverizer and the rotating speed of the classification wheel have great influence on the fineness of the processed material, so that the rotating speed of the classification wheel and the air quantity of the pulverizer can be adjusted simultaneously to obtain a better effect. Therefore, the processing adjustment mode is to adjust the rotating speed of the classifying wheel up and the air quantity of the pulverizer down according to the acquired fineness of the crushed materials, or adjust the rotating speed of the classifying wheel down and the air quantity of the pulverizer up. The rotating speed of the classifying wheel and the air quantity of the pulverizer can be regulated by adopting a step control mode.
According to the embodiment of the disclosure, when the target fineness is in the second fineness interval, the influence of different parameters on the fineness of the crushed materials is considered, and the rotating speed of the classifying wheel and the air quantity of the crusher are adjusted. According to the method and the device for adjusting the fineness of the pulverizer, the processing mode of the pulverizer when the target fineness is located in the second fineness range can be determined, and therefore a good adjusting effect can be achieved.
In one embodiment, the processing the material according to the processing mode until the fineness after processing is within the preset range includes:
when the fineness is smaller than the minimum value of the preset range, the rotating speed of the grading wheel is adjusted up by a first preset value, and the air quantity of the pulverizer is adjusted down by a third preset value until the fineness after processing is within the preset range;
and when the fineness is larger than the maximum value of the preset range, the rotating speed of the classifying wheel is adjusted downwards by a second preset value, and the air quantity of the pulverizer is adjusted upwards by a fourth preset value until the fineness after processing is within the preset range.
In the embodiment of the disclosure, when the target fineness is in the second fineness interval, and the fineness of the crushed material is lower than the minimum value of the preset range, that is, the fineness of the crushed material is lower, the crushing fineness needs to be improved. At this time, the first preset value of the rotating speed of the classifying wheel is adjusted upwards, the third preset value of the air quantity of the pulverizer is adjusted downwards, the diameter of the material allowed to pass through is reduced, and the fineness of the pulverized material is improved. The first preset value is an up-regulating value of the rotating speed of the classifying wheel in the one-time regulating process, and the third preset value is a down-regulating value of the air quantity of the pulverizer in the one-time regulating process. When the fineness of the crushed material is higher than the maximum value of the preset range, that is, the fineness of the crushed material is higher, the crushing fineness needs to be reduced. At this time, the rotating speed of the classifying wheel is adjusted downwards by a second preset value, and the air quantity of the pulverizer is adjusted upwards by a fourth preset value, so that the diameter of the allowed material is increased, and the fineness of the pulverized material is reduced. The second preset value is a lower regulating value of the rotating speed of the classifying wheel in the one-time regulating process, and the fourth preset value is an upper regulating value of the air quantity of the pulverizer in the one-time regulating process. Judging whether the fineness of the crushed materials after adjustment is within a preset range, and if so, completing adjustment.
According to the embodiment of the disclosure, when the target fineness is in the second fineness interval, the rotating speed of the classifying wheel and the air quantity of the pulverizer are adjusted according to the difference of the fineness of the crushed materials. According to the embodiment of the disclosure, when the target fineness is in the second fineness range, the rotating speed of the classifying wheel and the air quantity of the pulverizer can be adjusted at the same time, so that the fineness of the pulverized material after adjustment meets the requirement.
In one embodiment, the determining a processing mode matched with the target fineness according to the target fineness, where a type of the processing mode has a preset association relationship with a fineness interval in which the target fineness is located, includes:
when the target fineness is in the third fineness interval, determining the processing mode includes: setting the rotating speed of the classifying wheel as a second threshold value, and adjusting the air quantity of the pulverizer up or down.
In the embodiment of the disclosure, when the target fineness is in the third fineness interval, that is, when the fineness requirement is high fineness, the crushed particles are smaller, and the influence of the rotating speed of the classifying wheel on the fineness of the processed material is smaller, so that the air quantity of the pulverizer is adjusted to obtain a better effect. Therefore, the processing adjustment mode is to set the rotating speed of the classifying wheel as a second threshold, wherein the second threshold is usually a fixed value at a high position, and the air quantity of the pulverizer is adjusted up or down according to the acquired fineness of the pulverized material. Wherein, the feedback control mechanism of the air quantity regulation of the pulverizer can adopt a PID mode.
According to the embodiment of the disclosure, when the target fineness is in the third fineness interval, the influence of different parameters on the fineness of the crushed materials at the moment is considered, and the air quantity of the crusher is adjusted. According to the method and the device for adjusting the fineness of the pulverizer, the processing mode of the pulverizer when the target fineness is located in the third fineness interval can be determined, and therefore a good adjusting effect can be achieved.
In one embodiment, the processing the material according to the processing mode until the fineness after processing is within the preset range includes:
when the fineness is smaller than the minimum value of the preset range, the air quantity of the pulverizer is adjusted downwards by a third preset value;
and when the fineness is larger than the maximum value of the preset range, the air quantity of the pulverizer is adjusted upwards by a fourth preset value.
In the embodiment of the disclosure, when the target fineness is in the third fineness interval, the fineness of the crushed material is lower than the minimum value of the preset range, that is, the fineness of the crushed material is lower at this time, and the crushing fineness needs to be improved. At this time, the third preset value of the air quantity of the pulverizer is adjusted downwards, the diameter of the material allowed to pass through is reduced, and the fineness of the pulverized material is improved. The third preset value is a down-regulating value of the air quantity of the pulverizer in one-time regulation process. When the fineness of the crushed material is higher than the maximum value of the preset range, that is, the fineness of the crushed material is higher, the crushing fineness needs to be reduced. At this time, the fourth preset value of the air quantity of the pulverizer is adjusted upwards, the diameter of the material allowed to pass through is increased, and the fineness of the pulverized material is reduced. The fourth preset value is an up-regulating value of the air quantity of the pulverizer in one-time regulation process. Judging whether the fineness of the crushed materials after adjustment is within a preset range, and if so, completing adjustment.
According to the embodiment of the disclosure, when the target fineness is in the third fineness interval, the air quantity of the pulverizer is adjusted according to the difference of the fineness of the crushed materials. According to the embodiment of the disclosure, when the target fineness is in the third fineness interval, the rotating speed of the classifying wheel can be adjusted, so that the fineness of the crushed materials after adjustment meets the requirement.
Fig. 3 is a flow chart of a method for adjusting fineness of materials according to an exemplary embodiment, and referring to fig. 3, a pulverizer starts pulverizing, first, according to the fineness of the materials, a first fineness interval, a second fineness interval, and a third fineness interval are established from small to large according to interval standards of the fineness, respectively corresponding to a low fineness interval, a medium fineness interval, and a high fineness interval, and then after the materials are put into the pulverizer, the materials are produced according to data in an initial value database. And detecting the fineness of the material by using a fineness online detection system, judging whether the fineness of the detected material meets the standard, and if not, adjusting by using a fineness adjusting system and continuously detecting the fineness of the material. If the material fineness meets the standard, judging whether the production is finished, if the production is not finished, judging whether the sampling period is reached, detecting the material fineness again when the sampling period is reached, and if the production is finished, stopping the operation of the pulverizer.
Fig. 4 is a flow chart illustrating a method for adjusting fineness of a material according to an exemplary embodiment, and referring to fig. 4, fineness of the material produced in the current situation is obtained by an on-line fineness monitoring system, and an interval in which a required target fineness is located is determined. If the interval is a low-fineness interval, the rotating speed of the classifying wheel is adjusted; if the interval is a medium fineness interval, the rotating speed of the classifying wheel and the air quantity of the system are required to be adjusted; if the air quantity is in the high-fineness zone, the air quantity of the system is adjusted. Wherein the adjustment process is adjusted according to a control algorithm, such as a PID algorithm. In an example, taking SWFL170 type vertical ultrafine grinding as an example, in actual production, when the fineness requirement is not higher than 90% of the 80 mesh passing rate, it can be considered as a low fineness requirement, and the fineness of the material is preferably adjusted by adjusting the rotation speed of the classifying wheel by adopting PID control; the system air volume at the moment can be fixed to be 16000m of the system design air volume 3 And/h. When the fineness requirement is higher than 98% of the 80-mesh passing rate, the fineness requirement can be considered as high fineness requirement, the fineness of the materials is adjusted by adjusting the air quantity of the system through PID control, and the frequency of the classifying wheel can be fixed at 44Hz. When the fineness requirement is 80 mesh passing rate is between 90% and 98%, it can be regarded as medium fineness requirement. The system air volume at this time can be fixed to an empirical value of 15000m 3 And/h, the rotating speed of the classifying wheel can be fixed to be an empirical value of 40Hz, and the fineness is adjusted by adjusting the rotating speed of the classifying wheel and the air quantity of the system at the same time in a step control mode. That is, if the measured fineness of the product is lower than the minimum value of the target fineness error range, the rotation speed of the classifying wheel is increased by 0.5Hz while the air quantity is reduced by 200m 3 /h; if the fineness of the measured product is higher than the maximum value of the target fineness error range, the rotating speed of the classifying wheel is reduced by 0.5Hz, and the air quantity is increased by 200m 3 And/h. And circulating until the fineness of the actually measured product falls within the target fineness error range.
In the embodiments of the present disclosure, since the sampling frequency of the on-line particle size detection can be shortened to 1-2 minutes, the cycle of fineness adjustment can be substantially completed within 3 minutes. Therefore, the quality stability of the crushed materials can be ensured to the greatest extent. Meanwhile, the influence on the quality of products caused by too low or too high granularity is eliminated to the maximum extent, and the energy waste caused by excessive processing is reduced. In addition, automated granularity detection can provide great convenience for production process recording. The fineness of the materials in the superfine grinding operation can be recorded and archived for about 3 minutes, which brings great help to production process optimization, product quality improvement and quality tracing.
It should be understood that, although the steps of the flowcharts in the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps in the figures may include steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor does the order in which the steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the application also provides a material fineness adjusting device for realizing the above-mentioned material fineness adjusting method. The implementation scheme of the device for solving the problem is similar to that described in the above method, so the specific limitation in the embodiment of the device for adjusting fineness of one or more materials provided below can be referred to the limitation of the method for adjusting fineness of materials hereinabove, and will not be described herein.
In one embodiment, as shown in fig. 5, there is provided a device for adjusting fineness of a material, the device being applied to a pulverizer including a classification wheel, comprising:
the acquisition module is used for acquiring the fineness of the material and the target fineness to be achieved by processing the material;
the determining module is used for determining a processing mode matched with the target fineness according to the target fineness when the fineness is out of a preset range of the target fineness, wherein the type of the processing mode has a preset association relationship with a fineness range in which the target fineness is located;
and the processing module is used for processing the materials according to the processing mode until the processed fineness is within the preset range.
In one embodiment, the determining module includes:
the first determining module is configured to determine, when the target fineness is in a first fineness range, the processing mode includes: and setting the air quantity of the pulverizer as a first threshold value, and adjusting up or down the rotating speed of the classifying wheel.
In one embodiment, the processing module comprises:
the first processing submodule is used for adjusting the rotating speed of the grading wheel by a first preset value when the fineness is smaller than the minimum value of the preset range until the fineness after processing is within the preset range;
And the second processing submodule is used for adjusting the rotating speed of the grading wheel by a second preset value when the fineness is larger than the maximum value of the preset range until the processed fineness is within the preset range.
In one embodiment, the determining module includes:
the second determining module is configured to determine, when the target fineness is in a second fineness interval, the processing mode includes: and (3) up-regulating the air quantity of the pulverizer and down-regulating the rotating speed of the classifying wheel, or down-regulating the air quantity of the pulverizer and up-regulating the rotating speed of the classifying wheel.
In one embodiment, the process module comprises:
the first processing submodule is used for adjusting the rotating speed of the grading wheel up to a first preset value when the fineness is smaller than the minimum value of the preset range, and adjusting the air quantity of the pulverizer down to a third preset value until the fineness after processing is within the preset range;
and the second processing submodule is used for adjusting the rotating speed of the grading wheel downwards by a second preset value and adjusting the air quantity of the pulverizer upwards by a fourth preset value when the fineness is larger than the maximum value of the preset range until the fineness after processing is within the preset range.
In one embodiment, the determining module includes:
the third determining module is configured to determine, when the target fineness is in a third fineness interval, the processing mode includes: setting the rotating speed of the classifying wheel as a second threshold value, and adjusting the air quantity of the pulverizer up or down.
In one embodiment, the processing module includes:
the first processing submodule is used for downwards regulating the air quantity of the pulverizer by a third preset value when the fineness is smaller than the minimum value of the preset range;
and the second processing submodule is used for adjusting the air quantity of the pulverizer to a fourth preset value when the fineness is larger than the maximum value of the preset range.
All or part of each module in the material fineness adjusting device can be realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 6. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing the fineness data of the materials. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements a method for adjusting the fineness of a material.
It will be appreciated by those skilled in the art that the structure shown in fig. 6 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In an embodiment, there is also provided a computer device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, carries out the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
It should be noted that, user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (11)
1. A method for adjusting the fineness of a material, characterized in that it is applied to a pulverizer comprising a classification wheel, comprising:
acquiring fineness of a material and processing the material to obtain target fineness;
determining a processing mode matched with the target fineness according to the target fineness when the fineness is out of a preset range of the target fineness, wherein the type of the processing mode has a preset association relationship with a fineness interval in which the target fineness is located;
Dividing a fineness interval into a first fineness interval, a second fineness interval and a third fineness interval from low to high according to fineness, wherein the fineness requirement of the first fineness interval is low, the fineness requirement of the second fineness interval is medium fineness, the fineness requirement of the third fineness interval is high, and determining a processing mode matched with the target fineness according to the target fineness, wherein the type of the processing mode and the fineness interval of the target fineness have a preset association relation, and the processing mode comprises the following steps:
when the target fineness is in the first fineness interval, determining the processing mode includes: setting the air quantity of the pulverizer as a first threshold value, and up-regulating or down-regulating the rotating speed of the classifying wheel; when the target fineness is in the second fineness interval, determining the processing mode includes: up-regulating the air quantity of the pulverizer and down-regulating the rotating speed of the classifying wheel, or down-regulating the air quantity of the pulverizer and up-regulating the rotating speed of the classifying wheel; when the target fineness is in the third fineness interval, determining the processing mode includes: setting the rotating speed of the classifying wheel as a second threshold value, and up-regulating or down-regulating the air quantity of the pulverizer;
And processing the material according to the processing mode until the fineness after processing is within the preset range.
2. The method according to claim 1, wherein when the target fineness is within the first fineness range, the processing the material according to the processing manner until the processed fineness is within the preset range includes:
when the fineness is smaller than the minimum value of the preset range, the rotating speed of the grading wheel is adjusted upwards by a first preset value until the fineness after processing is within the preset range;
and when the fineness is larger than the maximum value of the preset range, the rotating speed of the grading wheel is adjusted downwards by a second preset value until the fineness after processing is within the preset range.
3. The method according to claim 1, wherein when the target fineness is within the second fineness range, the processing the material according to the processing manner until the processed fineness is within the preset range includes:
when the fineness is smaller than the minimum value of the preset range, the rotating speed of the grading wheel is adjusted up by a first preset value, and the air quantity of the pulverizer is adjusted down by a third preset value until the fineness after processing is within the preset range;
And when the fineness is larger than the maximum value of the preset range, the rotating speed of the classifying wheel is adjusted downwards by a second preset value, and the air quantity of the pulverizer is adjusted upwards by a fourth preset value until the fineness after processing is within the preset range.
4. The method according to claim 1, wherein when the target fineness is within the third fineness range, the processing the material according to the processing manner until the processed fineness is within the preset range includes:
when the fineness is smaller than the minimum value of the preset range, the air quantity of the pulverizer is adjusted downwards by a third preset value;
and when the fineness is larger than the maximum value of the preset range, the air quantity of the pulverizer is adjusted upwards by a fourth preset value.
5. A device for adjusting the fineness of a material, characterized in that it is applied to a pulverizer comprising a classification wheel, comprising:
the acquisition module is used for acquiring the fineness of the material and the target fineness to be achieved by processing the material;
the determining module is used for determining a processing mode matched with the target fineness according to the target fineness when the fineness is out of a preset range of the target fineness, wherein the type of the processing mode has a preset association relationship with a fineness range in which the target fineness is located;
Dividing a fineness interval into a first fineness interval, a second fineness interval and a third fineness interval from low to high, wherein the fineness requirement of the first fineness interval is low, the fineness requirement of the second fineness interval is medium, the fineness requirement of the third fineness interval is high, and the determining module comprises:
the first determining module is configured to determine, when the target fineness is in a first fineness range, the processing mode includes: setting the air quantity of the pulverizer as a first threshold value, and up-regulating or down-regulating the rotating speed of the classifying wheel; the second determining module is configured to determine, when the target fineness is in a second fineness interval, the processing mode includes: up-regulating the air quantity of the pulverizer and down-regulating the rotating speed of the classifying wheel, or down-regulating the air quantity of the pulverizer and up-regulating the rotating speed of the classifying wheel; the third determining module is configured to determine, when the target fineness is in a third fineness interval, the processing mode includes: setting the rotating speed of the classifying wheel as a second threshold value, and up-regulating or down-regulating the air quantity of the pulverizer;
and the processing module is used for processing the materials according to the processing mode until the processed fineness is within the preset range.
6. The apparatus of claim 5, wherein the processing module comprises, when the target fineness is within the first fineness interval:
the first processing submodule is used for adjusting the rotating speed of the grading wheel by a first preset value when the fineness is smaller than the minimum value of the preset range until the fineness after processing is within the preset range;
and the second processing submodule is used for adjusting the rotating speed of the grading wheel by a second preset value when the fineness is larger than the maximum value of the preset range until the processed fineness is within the preset range.
7. The apparatus of claim 5, wherein the processing module when the target fineness is within the second fineness interval comprises:
the first processing submodule is used for adjusting the rotating speed of the grading wheel up to a first preset value when the fineness is smaller than the minimum value of the preset range, and adjusting the air quantity of the pulverizer down to a third preset value until the fineness after processing is within the preset range;
and the second processing submodule is used for adjusting the rotating speed of the grading wheel downwards by a second preset value and adjusting the air quantity of the pulverizer upwards by a fourth preset value when the fineness is larger than the maximum value of the preset range until the fineness after processing is within the preset range.
8. The apparatus of claim 5, wherein the processing module comprises, when the target fineness is within the third fineness interval:
the first processing submodule is used for downwards regulating the air quantity of the pulverizer by a third preset value when the fineness is smaller than the minimum value of the preset range;
and the second processing submodule is used for adjusting the air quantity of the pulverizer to a fourth preset value when the fineness is larger than the maximum value of the preset range.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 4 when the computer program is executed.
10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 4.
11. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the method of any of claims 1 to 4.
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