WO2016063897A1 - 造粒機の運転条件の評価装置及び評価方法 - Google Patents
造粒機の運転条件の評価装置及び評価方法 Download PDFInfo
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- WO2016063897A1 WO2016063897A1 PCT/JP2015/079664 JP2015079664W WO2016063897A1 WO 2016063897 A1 WO2016063897 A1 WO 2016063897A1 JP 2015079664 W JP2015079664 W JP 2015079664W WO 2016063897 A1 WO2016063897 A1 WO 2016063897A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/005—Control arrangements
- B30B11/006—Control arrangements for roller presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/22—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/26—Programme control arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/30—Feeding material to presses
- B30B15/302—Feeding material in particulate or plastic state to moulding presses
- B30B15/308—Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses
Definitions
- the present invention relates to a granulator operating condition evaluation apparatus, evaluation method, granulator, granulated product manufacturing method, granulator control apparatus, granulator control method, and program.
- Patent Document 1 describes a technique for controlling the operating conditions of the apparatus based on a strain value generated in a compression roller support that applies a compressive force to the raw material so that a granulated product can be produced under desired granulation conditions. ing. By measuring the strain value, the compression load applied to the raw material is directly grasped, and the operating conditions are precisely controlled.
- the present invention makes it easy to determine the direction of adjusting the operating conditions of the granulator when the quality of the granulated product is close to the target quality.
- An evaluation device for evaluating the operating conditions of a granulator, An evaluation information acquisition unit for acquiring a plurality of evaluation information indicating evaluation results of a plurality of granulated products manufactured by the granulator under the same manufacturing conditions; An evaluation data generating unit that generates evaluation data that is data obtained by comparing the plurality of evaluation information with each other; An evaluation device is provided.
- An evaluation method for evaluating the operating conditions of a granulator Obtaining a plurality of evaluation information indicating evaluation results of a plurality of granulated products produced by the granulator under the same production conditions; Generating and displaying evaluation data which is data obtained by comparing the plurality of evaluation information with each other;
- An evaluation method is provided in which the evaluation data is display data for displaying the plurality of pieces of evaluation information on the same graph in a state where they can be distinguished from each other.
- a computer program for realizing an evaluation device for evaluating the operating conditions of a granulator Computer Evaluation information acquisition means for acquiring a plurality of evaluation information indicating evaluation results of a plurality of granulated products manufactured by the granulator under the same manufacturing conditions, and There is provided a computer program for functioning as evaluation data generating means for generating evaluation data which is data obtained by comparing the plurality of evaluation information with each other.
- a granulating part that operates under set operating conditions to produce a granulated product;
- An acquisition unit that acquires evaluation information indicating an evaluation result of a plurality of the granulated products manufactured under the same manufacturing conditions;
- a setting unit for setting the operating condition based on the evaluation information;
- the evaluation information includes a first evaluation parameter and a second evaluation parameter,
- the setting unit evaluates based on the distribution of the plot when the evaluation results of the plurality of granulated products are plotted on a graph in which the first evaluation parameter is the first axis and the second evaluation parameter is the second axis. Determining whether to change the predetermined operating condition by comparing the value with a predetermined criterion; A granulator is provided.
- a granulator control device that operates under set operating conditions to produce a granulated product
- An acquisition unit that acquires evaluation information indicating an evaluation result of a plurality of the granulated products manufactured under the same manufacturing conditions
- a setting unit for setting the operating condition based on the evaluation information
- the evaluation information includes a first evaluation parameter and a second evaluation parameter
- the setting unit evaluates based on the distribution of the plot when the evaluation results of the plurality of granulated products are plotted on a graph in which the first evaluation parameter is the first axis and the second evaluation parameter is the second axis. Determining whether to change the predetermined operating condition by comparing the value with a predetermined criterion;
- a control device for the granulator is provided.
- a control method for a granulator that operates under set operating conditions to produce a granulated product An acquisition step of acquiring evaluation information indicating an evaluation result of a plurality of the granulated products manufactured under the same manufacturing conditions; A setting step for setting the operating condition based on the evaluation information; With The evaluation information includes a first evaluation parameter and a second evaluation parameter, In the setting step, an evaluation based on the distribution of the plot when the evaluation results of the plurality of granulated products are plotted on a graph in which the first evaluation parameter is taken as the first axis and the second evaluation parameter is taken as the second axis. Determining whether to change the predetermined operating condition by comparing the value with a predetermined criterion; A method for controlling a granulator is provided.
- a method for producing a granulated product by a granulator An acquisition step of acquiring evaluation information indicating an evaluation result of a plurality of the granulated products manufactured under the same manufacturing conditions; A setting step for setting the operating condition based on the evaluation information; Including The evaluation information includes a first evaluation parameter and a second evaluation parameter, In the setting step, an evaluation based on the distribution of the plot when the evaluation results of the plurality of granulated products are plotted on a graph in which the first evaluation parameter is taken as the first axis and the second evaluation parameter is taken as the second axis. Determining whether to change the predetermined operating condition by comparing the value with a predetermined criterion; A method for producing a granulated product is provided.
- a computer program for realizing a control device for a granulator that operates under set operating conditions to produce a granulated product Computer Functioning as acquisition means for acquiring evaluation information indicating evaluation results of a plurality of the granulated products manufactured under the same manufacturing conditions, and setting means for setting the operating conditions based on the evaluation information;
- the evaluation information includes a first evaluation parameter and a second evaluation parameter,
- the setting means evaluates based on the distribution of the plot when plotting the evaluation results of the plurality of granulated materials on a graph in which the first evaluation parameter is the first axis and the second evaluation parameter is the second axis.
- the present invention it is possible to easily adjust the operating conditions of the granulator to bring the quality of the obtained granulated product close to the target quality.
- (A) is a figure which shows the example of a probability ellipse at the time of taking a crushing strength on a horizontal axis
- (b) is the crushing strength of a granulated material, a single-piece
- control unit of the granulator, the setting unit, the storage unit, and the acquisition unit, the evaluation information acquisition unit of the evaluation device, and the evaluation data generation unit are not hardware unit configurations, A functional unit block is shown.
- the control unit, setting unit, storage unit, and acquisition unit of the granulator, and the evaluation information acquisition unit and evaluation data generation unit of the evaluation apparatus are loaded into the CPU, memory, and memory of any computer. It is realized by an arbitrary combination of hardware and software centering on a program for realizing the constituent elements, a storage medium such as a hard disk for storing the program, and a network connection interface. There are various modifications of the implementation method and apparatus.
- FIG. 1 is a diagram for explaining a use environment of the evaluation apparatus 20 according to the first embodiment.
- FIG. 2 is a block diagram showing the configuration of the evaluation apparatus 20. In the following, the flow of data is indicated by solid arrows, and the flow of objects is indicated by broken arrows.
- the granulator 10 produces a granulated product by compressing the raw material. And the quality of a granulated material changes with the driving
- Evaluation device 20 evaluates the operating conditions of the granulator 10.
- the evaluation device 20 includes an evaluation information acquisition unit 220 and an evaluation data generation unit 230.
- the evaluation information acquisition unit 220 acquires a plurality of pieces of evaluation information indicating evaluation results of a plurality of granulated products manufactured by the granulator 10 under the same manufacturing conditions.
- the evaluation data generation unit 230 generates evaluation data that is data obtained by comparing a plurality of pieces of evaluation information. This will be described in detail below.
- the granulator 10 includes a control unit 110, two rolls 120, a raw material supply unit 130, and a pressure adjustment unit 140.
- the two rolls 120 face each other.
- a recess is formed on at least one of the surfaces of the two rolls 120, and the raw material is compressed between the two rolls 120 to produce a granulated product.
- a raw material supply unit 130 is provided above the gap between the two rolls 120 so as to supply the raw material to the gap.
- the raw material supply unit 130 supplies the raw material between the two rolls 120.
- the raw material supply unit 130 includes, for example, a raw material hopper that stores the raw material, and a screw feeder that feeds the raw material between the two rolls 120.
- the two rolls 120 are arranged with the curved surface portions 122 facing each other, and the distance between the two rolls 120, that is, the interval between the curved surface portions 122 is variable.
- the pressure adjusting unit 140 adjusts the pressure applied to the raw material located between the two rolls 120 via the two rolls 120.
- the pressure adjustment unit 140 is provided on one roll 120 and adjusts the pressure with which the roll 120 is pressed toward the other roll 120.
- the pressure adjustment unit 140 is, for example, a hydraulic device.
- the granulator 10 further includes a control unit 110.
- the control unit 110 is, for example, a microcontroller (microcomputer).
- the granulator 10 further includes an input unit (not shown), and the control unit 110 controls the operating conditions based on a set value input from a user or an external device.
- the control unit 110 controls the rotation direction and rotation speed of the roll 120.
- the two rolls 120 are simultaneously driven in the opposite directions at the same rotational speed.
- the rotation direction of the two rolls 120 is a direction in which the two curved surface portions 122 advance in a direction away from the raw material supply portion 130 in a region where the two curved surface portions 122 face each other. For example, in FIG.
- the right roll 120 is rotated counterclockwise and the left roll 120 is rotated clockwise.
- the raw material in the gap between the two curved surface portions 122 is sent out to the side opposite to the raw material supply unit 130 while being compressed.
- the control unit 110 also controls the pressure adjusting unit 140 to adjust the pressure applied between the two rolls 120.
- the control unit 110 controls the raw material supply unit 130 and adjusts the amount of raw material (raw material supply amount) fed between the two rolls 120.
- the raw material supply amount can be adjusted by controlling the rotational speed of the screw feeder.
- the raw material supply part 130 is not restricted to said structure.
- a gate feeder may be provided instead of the screw feeder, or a feeder-less may be used.
- the raw material supply amount can be adjusted by the gate opening amount.
- the raw material supply amount can be adjusted by controlling the amount of raw material stored in the raw material hopper.
- the granulator 10 may further include a sensor for measuring the state of the raw material.
- the state of the raw material measured here is, for example, the temperature of the raw material, the moisture content of the raw material, or the like.
- the control part 110 acquires a measurement result as the information regarding a raw material from the said sensor.
- the granulator 10 may further include a sensor that measures the state of the environment in which the granulator 10 is placed.
- the environmental state measured here is, for example, humidity.
- the control unit 110 acquires the measurement result as information related to the environment from the sensor.
- granule identification information such as, for example, a lot number is attached to the information on the raw material and the information on the environment for each lot.
- the raw material charged into the granulator 10 is sent between the two rolls 120 by the raw material supply unit 130 and compressed.
- the surface of the surface on which the raw material is compressed is provided with a plurality of recesses, and the rough shape of the granulated product to be manufactured is determined according to the shape of the recesses.
- the compressed raw material is sent to the opposite side of the raw material supply unit 130 by the rotation of the roll 120, and a granulated product is obtained.
- the thickness of the granulated material is determined by the distance between the two rolls 120.
- the interval between the two rolls 120 is variable, and depends on the pressure adjusted by the pressure adjustment unit 140, the amount of raw material fed by the raw material supply unit 130, the rotational speed of the roll 120, and the like. Specifically, the interval between the two rolls 120 to which a constant pressure is applied is expanded according to the balance between the supply amount of the raw material and the rotational speed. Therefore, the thickness of the granulated material decreases as the pressure increases, decreases as the rotation speed of the roll 120 increases, and increases as the amount of raw material supplied increases.
- the operating conditions of the granulator 10 when the raw material is granulated are added to the raw material positioned between the two rolls 120 through the two rolls 120, for example, the rotational speed of the two rolls 120.
- the pressure and the amount of material supplied per unit time by the material supply unit 130 are included.
- the operating conditions are controlled by the control unit 110 directly to set values, in addition to the rotation speed of the roll 120, the rotation speed of the screw feeder of the raw material supply unit 130, the pressure of the pressure adjustment unit 140, etc. It is also possible to include a condition that is indirectly controlled so as to become a specific set value by adjusting.
- the operating conditions may include a raw material supply amount, current consumption, power consumption, a movement amount of the roll 120, a strain value generated in the support portion of the roll 120, and the like.
- the moving amount of the roll 120 is a size that the roll 120 moves from the initial position when the raw material is supplied between the two rolls 120.
- Opera condition information Information indicating the operation condition of the granulator 10 is hereinafter referred to as “operation condition information”.
- operation condition information is attached
- the production conditions of the granulated product are, for example, the above-described operating conditions, further including the type of raw material, the state of the raw material, and the state of the environment where the granulator 10 is placed.
- Information regarding the production conditions of the granulated product is hereinafter referred to as “production condition information”.
- the manufacturing condition information may include only operating condition information without including information on the type of raw material, the state of the raw material, and the state of the environment where the granulator 10 is placed.
- the evaluation device 20 includes an evaluation information acquisition unit 220, an evaluation data generation unit 230, and a measurement unit 210.
- the measurement part 210 may be provided outside the evaluation apparatus 20, for example, may be provided in the granulator 10.
- the characteristic of the granulated material manufactured with the granulator 10 is measured.
- the measured item that is, the evaluation parameter can include, for example, one or more of a single weight, a crushing strength, a rotating strength, a dropping strength, an apparent density, a weight, a dimension, and a volume of the granulated product.
- the measurement part 210 produces
- the evaluation information may be, for example, a table that associates each granulated product with the value of each evaluation parameter and shows the results for a plurality of granulated products.
- the evaluation information includes granule identification information such as a lot number for each lot.
- the evaluation information acquisition unit 220 acquires evaluation information from the measurement unit 210.
- the evaluation information acquisition unit 220 further acquires, from the control unit 110, operating condition information indicating operating conditions of the granulator 10, information on raw materials, and information on the environment among the manufacturing condition information.
- the information which shows the kind of raw material among manufacturing condition information is further provided with the input part which is not shown in the granulator 10 or the evaluation apparatus 20, and it is made to input by a user etc., and the evaluation information acquisition part 220 acquires.
- the evaluation information acquisition unit 220 does not necessarily need to acquire information on the raw material, information on the environment, and information indicating the type of the raw material, and may acquire only the operating condition information as the manufacturing condition information.
- the evaluation information, the operation information, the information on the raw material, the information on the environment, and the information indicating the type of raw material are each provided with granule identification information for each lot, for example, in the evaluation information acquisition unit 220, Can be associated with each other.
- a granulated product is manufactured at least at a certain time interval for each granulated product identification information. Since the manufacturing conditions can be different for each granule identification information, the quality of the manufactured granule can be different.
- the granulated product identification information may be different and the manufacturing conditions may be the same.
- the granule identification information can be further associated with the production time.
- the evaluation information acquisition unit 220 similarly acquires a plurality of evaluation information and manufacturing condition information.
- the granulated product that is the measurement target of the plurality of pieces of evaluation information has different granule identification information and is manufactured under different manufacturing conditions.
- the plurality of manufacturing conditions may be different from each other in at least one of the elements included in the manufacturing conditions.
- the plurality of manufacturing conditions include the rotational speed of two rolls 120, the pressure applied to the raw material positioned between the two rolls 120 via the two rolls 120, and the raw material supply amount per unit time by the raw material supply unit 130. At least one of the kind of raw material, the temperature of the raw material, and the humidity may be different from each other.
- the evaluation information acquisition unit 220 reads at least one set of evaluation information and manufacturing condition information from among a plurality of pieces of evaluation information and manufacturing condition information to be acquired and stores the evaluation information and manufacturing condition information stored in advance. You may get by.
- the evaluation data generation unit 230 acquires a plurality of evaluation information from the evaluation information acquisition unit 220, and generates evaluation data that is data obtained by comparing the plurality of evaluation information with each other.
- the evaluation data can be, for example, a table in which a plurality of pieces of evaluation information are compared, or display data for displaying the plurality of pieces of evaluation information on the same graph in a state where they can be distinguished from each other.
- Evaluation data generated by the evaluation data generation unit 230 can be displayed by the display unit 30 provided outside the evaluation device 20.
- FIG. 3 is a diagram illustrating an example of an image displayed on the display unit 30 in the present embodiment.
- the graph to be displayed can be a multidimensional graph such as a two-dimensional graph or a three-dimensional graph.
- the evaluation data includes values for each of a plurality of evaluation parameters.
- the x-axis of the graph is the first evaluation parameter
- the y-axis of the graph is the second evaluation parameter.
- This figure shows an example in which the first evaluation parameter is the apparent density and the second evaluation parameter is the crushing strength.
- the evaluation result of each granulated product is plotted.
- the plot can be identified for each granule identification information by changing the marker shape and color for each granule identification information.
- the state of the plurality of evaluation parameters can be easily visually confirmed.
- the scale of each axis can be set to the value of each evaluation parameter, and as shown in this figure, the target value as the quality of the granulated product is standardized as 50 or displayed. A deviation from the value may be displayed as a positive or negative value. Moreover, it is good also as a structure which can switch what is displayed.
- the evaluation data generation unit 230 generates a probability ellipse on a plane defined by the x-axis and the y-axis for each of a plurality of pieces of evaluation information.
- a probability ellipse is an ellipse that is drawn so that a certain number of plots fall within the ellipse among all plots in the graph.
- a probability ellipse can be defined to include 95% of the plot on the inside.
- FIG. 3 shows individual granulated products manufactured under three different manufacturing conditions (manufacturing condition 1, manufacturing condition 2, and manufacturing condition 3) that differ from each other only in the pressure applied to the raw material between the two rolls 120. It is the example which displayed the evaluation result and probability ellipse of the granulated material.
- the probability ellipse 310a is a probability ellipse generated based on the evaluation result of the manufacturing condition 1.
- the manufacturing condition 2 has a lower pressure than the manufacturing condition 1, and the probability ellipse 310b is a probability ellipse generated based on the evaluation result of the manufacturing condition 2.
- the manufacturing condition 3 has a higher pressure than the manufacturing condition 1, and the probability ellipse 310c is a probability ellipse generated based on the evaluation result of the manufacturing condition 3.
- the center coordinates of the probability ellipse 310a under manufacturing condition 1 are closest to the target value (50, 50).
- the manufacturing conditions 1 to 3 as the pressure is increased, the center of the ellipse moves in the y-axis direction, so that the number of granulated products with low crushing strength decreases, and the average value of crushing strength Can be seen to be higher.
- the length in the x-axis direction is longer in the manufacturing condition 3 where the pressure is higher than in the manufacturing condition 1 and the manufacturing condition 2, it can be seen that the variation in the apparent density is large. Therefore, it can be understood that a granulated product that is close to the target and has a small variation in quality can be obtained by the manufacturing condition 1. Then, it is possible to determine that operating conditions other than pressure should be adjusted when it is desired to further increase the crushing strength while avoiding an increase in apparent density variation.
- the ratio of plots inherent in the probability ellipse can be arbitrarily set.
- the evaluation data generation part 230 is good also as a structure which produces
- evaluation data generation unit 230 may generate a plurality of graphs in which at least one of the x-axis and y-axis evaluation parameters is different, and the one displayed on the display unit 30 may be switched.
- the evaluation device 20 further generates display data for displaying another auxiliary graph. May be. And what is displayed on the display part 30 among several graphs is good also as a structure which can be switched.
- the x-axis is any operating parameter
- the y-axis is any elliptical parameter
- the x-axis is the time when a plurality of granules are produced
- the y-axis is A graph or the like which is an ellipse parameter of any evaluation parameter can be mentioned.
- the ellipse parameter refers to a parameter that characterizes the probability ellipse, and refers to the center coordinates of the probability ellipse, the length of the major axis, the length of the minor axis, the inclination of the major axis, the area, and the like.
- the evaluation information acquisition unit 220 acquires the evaluation information for each of a plurality of different manufacturing conditions
- the plurality of evaluation information acquired by the evaluation information acquisition unit 220 is obtained by the same manufacturing conditions. May be included.
- generation part 230 may produce
- the evaluation data may be data obtained by comparing a plurality of pieces of evaluation information with different lot numbers.
- the stability of the quality of the granulated product can be confirmed by comparing the evaluation information with the same manufacturing conditions and different lots and different granule identification information. Specifically, the evaluation information having the same manufacturing conditions and different granule identification information is compared. If the evaluation information is not significantly different from each other, it can be determined that granulation is normally performed stably. In addition, unintended changes in production conditions can be detected, which helps to adjust the quality of the resulting granulated product to a target quality.
- the operating condition of a granulator can be evaluated by contrasting several evaluation information of a granulated material. Therefore, it is possible to easily adjust the operating conditions of the granulator to bring the quality of the obtained granulated product close to the target quality.
- FIG. 4 is a block diagram showing the configuration of the granulator 10 according to the second embodiment.
- the granulator 10 according to the present embodiment includes a granulation unit 410, an acquisition unit 430, a setting unit 450, and a storage unit 440.
- the granulation unit 410 operates under the set operating conditions to produce a granulated product.
- the acquisition part 430 acquires the evaluation information which shows the evaluation result of the some granulated material manufactured on the same manufacturing conditions.
- the setting unit 450 sets operating conditions based on the evaluation information.
- the storage unit 440 stores comparison data.
- the comparison data indicates a relationship between comparison evaluation information that is evaluation information to be compared and comparison operation conditions that are operation conditions when the comparison evaluation information is obtained.
- the setting unit 450 adjusts operating conditions based on the evaluation information acquired by the acquisition unit 430 and the comparison data. This will be described in detail below.
- the comparison data is, for example, evaluation information and operating conditions acquired in the past.
- the directionality for adjusting the operation condition is derived, and the granulated product Manufacturing.
- the granulation unit 410 includes two rolls 120, a raw material supply unit 130, and a pressure adjustment unit 140, similarly to the granulator 10 according to the first embodiment. Further, the granulator 10 according to the present embodiment includes a control unit 110. Each structure, mutual relationship, and operation of the two rolls 120, the raw material supply unit 130, the pressure adjustment unit 140, and the control unit 110 are the same as those in the first embodiment. The granulation unit 410 is controlled by the control unit 110 so as to operate under the set operating conditions, and produces a granulated product.
- the operating conditions are the rotational speed of the two rolls 120, the pressure applied to the raw material positioned between the two rolls via the two rolls 120, and the raw material supply per hour by the raw material supply unit. Two or more of the quantities may be included.
- the measuring unit 210 is provided outside the granulator 10, and the measuring unit 210 is similar to the measuring unit 210 according to the first embodiment and includes a plurality of granulated products manufactured under the same manufacturing conditions. Evaluation information indicating the evaluation result is generated. Note that the measuring unit 210 may be provided inside the granulator 10. In the present embodiment, the measurement unit 210 further calculates an elliptic parameter as a part of the evaluation information based on the evaluation result.
- the evaluation information according to the present embodiment includes at least one of the calculated ellipse parameters. This will be described in detail later.
- the acquisition unit 430 acquires evaluation information from the measurement unit 210 in the same manner as the evaluation information acquisition unit 220 according to the first embodiment.
- the acquisition unit 430 further acquires, from the control unit 110, operation condition information indicating the operation condition of the granulator 10, information on the raw material, and information on the environment among the production condition information.
- the information regarding a raw material and the information regarding an environment are acquired from each sensor provided in the granulation part 410 by the control part 110 similarly to 1st Embodiment.
- the information which shows the kind of raw material among manufacturing condition information is made to input into the granulator 10 in the user input part which is not shown in figure, and the acquisition part 430 acquires.
- evaluation information, operating condition information, information on raw materials, information on the environment, and information indicating the type of raw material are each provided with granule identification information such as a lot number for each lot.
- the acquisition unit 430 may read and acquire evaluation information and manufacturing condition information that are generated in advance and stored externally.
- the acquisition part 430 does not necessarily need to acquire the information regarding a raw material, the information regarding an environment, and the information which shows the kind of raw material, and may acquire only operating condition information as manufacturing condition information.
- the storage unit 440 stores comparison data.
- the comparison data is data indicating a relationship between comparison evaluation information that is evaluation information to be compared and comparison operation conditions that are operation conditions when the comparison evaluation information is obtained.
- the comparison data is, for example, information for generating a table, an expression, or a graph.
- the setting unit 450 acquires the evaluation information and the manufacturing information from the acquisition unit 430, and reads the comparison data from the storage unit 440. Then, the operating condition is adjusted based on the evaluation information and the comparison data.
- the setting unit 450 specifies an operation parameter to be adjusted based on the evaluation information and the comparison data, and calculates an adjustment amount of the operation parameter. The operation of the setting unit 450 will be described in detail later.
- the control part 110 acquires the operation parameter which should be adjusted, and the information which shows the adjustment amount from the setting part 450, and controls the granulation part 410 so that a granulated material may be manufactured on the operating conditions based on the acquired information.
- the operation parameter to be adjusted among the plurality of operation parameters by the setting unit 450, it is possible to avoid changing the operation parameter that does not require adjustment. Therefore, the operation
- FIG. 5 is a diagram showing a flow of a method for producing a granulated product according to the present embodiment.
- a granulated product is manufactured by the granulating part 410 (S10).
- the measuring unit 210 measures the manufactured granulated material and generates evaluation information.
- the acquisition unit 430 acquires evaluation information from the measurement unit 210 (S20).
- the setting unit 450 acquires comparison data from the storage unit 440 (S30), and adjusts operating conditions based on the evaluation information and the comparison data (S40). This will be described in detail below.
- a granulated product is manufactured by the granulating unit 410 of the granulator 10 (S10).
- S10 is the same as the operation
- the manufactured granulated material is measured by the measuring unit 210, and evaluation information is generated.
- the evaluation information according to the present embodiment is different from the first embodiment in that it includes an ellipse parameter.
- the acquisition unit 430 acquires evaluation information from the measurement unit 210 (S20).
- S20 is the same as the operation in which the evaluation information acquisition unit 220 acquires the evaluation information from the measurement unit 210 in the first embodiment.
- the acquisition part 430 acquires manufacturing condition information from the control part 110 or a user input part similarly to the evaluation information acquisition part 220 which concerns on 1st Embodiment.
- the setting unit 450 acquires evaluation information and manufacturing condition information from the acquisition unit 430, and further acquires comparison data from the storage unit 440 (S30). Then, the setting unit 450 adjusts the operating conditions based on the evaluation information and the comparison data (S40).
- FIG. 6 is a diagram for explaining details of step S40.
- An example of the operation of the setting unit 450 will be described in detail with reference to FIG.
- it indicates the probability ellipse based on the measured evaluation result by the measurement unit 210 with a solid line indicates the center coordinates a 1.
- it indicates the probability ellipse comparative evaluation data by a broken line shows the center coordinates A 1.
- examples of target center coordinates D 1 , D 2 , D 3 are shown.
- the measuring unit 210 calculates a set of ellipse parameters as evaluation information for the manufacturing conditions based on the evaluation results of a plurality of granulated products manufactured under the same manufacturing conditions.
- the evaluation information a includes a plurality of ellipse parameter values a 1 , a 2 , a 3 , and a 4 .
- the ellipse parameter is a probability ellipse in the case where the evaluation result of the granule is plotted on a plane defined with the first evaluation parameter of the granulation as the x axis and the second evaluation parameter of the granulation as the y axis.
- the center coordinates, the length of the major axis, the length of the minor axis, and the inclination of the major axis As shown in FIG. 6, the center coordinate of the probability ellipse based on the evaluation result is a 1 , the major axis length is a 2 , the minor axis length is a 3 , and the major axis inclination is a 4 .
- the production condition information b includes values b 1 , b 2 , and b 3 of a plurality of operation parameters when the granulated product is produced.
- b 1 is the rotational speed of the two rolls 120
- b 2 is the pressure applied to the raw material
- b 3 is the raw material supply amount per unit time.
- the comparison data stored in the storage unit 440 includes comparison evaluation information A and comparison operation conditions B.
- the comparative evaluation information A includes ellipse parameter values A 1 , A 2 , A 3 , and A 4 .
- a 1 is the central coordinate
- a 2 is the length of the major axis
- a 3 is the length of the minor axis
- a 4 is the inclination of the major axis.
- the comparative operation condition B includes operation parameter values B 1 , B 2 , and B 3 when the comparative evaluation information A is obtained.
- B 1 is the rotational speed of the two rolls 120
- B 2 is the pressure applied to the raw material
- B 3 is the raw material supply amount per unit time.
- the priority of adjustment is determined for the plurality of operation parameters.
- the priority is set higher as it is easier to adjust, or higher as it can be adjusted without reducing productivity.
- the priority is higher in the order of the raw material supply amount, the pressure, and the rotation speed.
- ⁇ b 3 is the difference between b 3 and B 3 . Note that the manufacturing conditions other than the raw material supply amount, pressure, and rotation speed are the same for the comparison data and the evaluation information.
- FIG. 7 is a diagram illustrating an operation flow of the setting unit 450.
- step S110 it is determined whether there is a target center coordinate near the straight line S passing through A 1 and a 1 (step S110). For example, if the D 1 shown in FIG. 6 as in the case of the center coordinates of the target, there is a center coordinate of the target in the vicinity of the straight line S (step S110: YES), the comparison operation condition B and the operating condition b
- the operation parameters having different values that is, the raw material supply amount, are determined to be adjusted subsequently, and are specified as the operation parameters to be adjusted (step S130).
- a straight line S passing through A 1 and a 1 is indicated by an arrow.
- Adjustment amount [Delta] b of operating parameters, on the extension of a line segment extending from A 1 to a 1, i.e., ⁇ b (d ⁇ ⁇ b 3 when centered coordinates to target on the opposite side of the A 1 with respect to a 1 ) / L relationship.
- ⁇ b (d ⁇ ⁇ b 3 when centered coordinates to target on the opposite side of the A 1 with respect to a 1 ) / L relationship.
- ⁇ b ⁇ (d ⁇ ⁇ b 3 ) / L.
- L is the distance between A 1 and a 1
- d is the distance between the target center coordinates and a 1 .
- step S110 determines whether there is a 1 in the vicinity of the point obtained through projection of the central coordinates of the target on the straight line S (step S150).
- the point which projected the target center coordinate on the straight line S means the intersection of the perpendicular drawn down to the straight line S from the said center coordinate, and the straight line S.
- the vicinity of a point indicates an area where the distance from the point is within a predetermined range.
- step S150 when a 1 is present near the point obtained by projecting the target center coordinate onto the straight line S, that is, near D ′ 2 in this figure (step S150: Yes), it is determined that it is difficult to adjust to the target with the operation parameters having different values between the operation condition b and the comparison operation condition B, that is, the raw material supply amount. Then, the operation parameter having the highest priority among the operation parameters other than the raw material supply amount, that is, the pressure is specified as the operation parameter to be adjusted (step S170). At this time, the absolute value of the adjustment amount ⁇ b is a predetermined unit amount. The direction of adjustment is determined to increase the second evaluation parameter when the target center coordinate deviates from the straight line S. On the other hand, when the target center coordinates deviate from the straight line S, the second evaluation parameter is set to be lowered. The correspondence between the direction in which each operation parameter is changed and the direction in which the second evaluation parameter is changed is previously grasped and stored.
- step S150 When D 3 shown in FIG. 6 is the target center coordinate, when a 1 is not present near the point where the target center coordinate is projected onto the straight line S, that is, near D ′ 3 in this figure (step S150: No), an operation parameter to be adjusted in order to bring the characteristics of the obtained granulated material closer to the projection point D′ 3 , and an adjustment amount ⁇ b is calculated (step S190). Specifically, it is determined that the operation parameters having different values between the operation condition b and the comparative operation condition B, that is, the raw material supply amount may be adjusted continuously.
- the setting unit 450 adjusts the operation condition based on the ellipse parameter, and can bring the two evaluation parameters into balance while bringing them close to the target value.
- step S40 the operation of the setting unit 450 in step S40 is not limited to the above-described example.
- storage part 440 may memorize
- the evaluation information acquired by the measurement unit 210 may be stored in the storage unit 440 as one piece of comparison data so that it can be used later when a granulated product is manufactured. In this way, basic data for many manufacturing conditions is accumulated, and adjustment accuracy can be improved.
- the target parameter is not limited to the center coordinates.
- the variation in the characteristics of the granulated product can be within a desired range.
- the area of the ellipse can be calculated from the length of the major axis of the ellipse and the length of the minor axis of the ellipse.
- the correlation of the characteristics of the granulated product can be within a desired range. .
- evaluation information does not necessarily include the ellipse parameter.
- the evaluation information may include other statistical values, for example, and may be used for specifying an operation parameter to be adjusted and calculating an adjustment amount.
- the operating conditions may be adjusted, and a graph or the like may be displayed on the display unit as described in the first embodiment.
- the granulator 10 which concerns on this embodiment is the following granulators 10.
- FIG. The granulator 10 includes a granulation unit 410, an acquisition unit 430, a setting unit 450, and a storage unit 440.
- the granulation unit 410 operates under the set operating conditions to produce a granulated product.
- the acquisition part 430 acquires the evaluation information which shows the evaluation result of the some granulated material manufactured on the same manufacturing conditions.
- the setting unit 450 sets operating conditions based on the evaluation information.
- the storage unit 440 stores comparison data indicating a relationship between comparison evaluation information that is evaluation information to be compared and comparison operation conditions that are operation conditions when the comparison evaluation information is obtained.
- the evaluation information includes a first evaluation parameter and a second evaluation parameter.
- the setting unit 450 is based on the distribution of the plot when the evaluation results of a plurality of granulated products are plotted on a graph in which the first evaluation parameter is the first axis and the second evaluation parameter is the second axis. By comparing the evaluation value with a predetermined standard, it is determined whether or not the predetermined operating condition is to be changed, and the operating condition is adjusted based on the comparison data.
- the manufacturing method of the granulated material which concerns on this embodiment is the following methods.
- the said manufacturing method is a method of manufacturing a granulated material with a granulator, Comprising: An acquisition process and a setting process are included.
- evaluation information indicating the results of a plurality of granules manufactured under the same manufacturing conditions is acquired.
- the setting step operating conditions are set based on the evaluation information.
- the evaluation information includes a first evaluation parameter and a second evaluation parameter.
- the evaluation is based on the distribution of the plot when the evaluation results of the plurality of granulated products are plotted on a graph in which the first evaluation parameter is the first axis and the second evaluation parameter is the second axis.
- the comparison evaluation information which is the evaluation information to be compared and the comparison data indicating the relationship between the comparison operation condition which is the operation condition when the comparison evaluation information is obtained are acquired, and based on the evaluation information and the comparison data The operating conditions are adjusted.
- FIG. 8 is a block diagram illustrating a configuration example of the granulator 10 according to the present embodiment.
- the granulator 10 according to the present embodiment is the same as the granulator 10 according to the second embodiment except for the points described below.
- the granulator 10 includes a granulation unit 410, an acquisition unit 430, and a setting unit 450.
- the granulation unit 410 operates under the set operating conditions to produce a granulated product.
- the acquisition part 430 acquires the evaluation information which shows the evaluation result of the some granulated material manufactured on the same manufacturing conditions.
- the setting unit 450 sets operating conditions based on the evaluation information.
- the evaluation information includes a first evaluation parameter and a second evaluation parameter.
- the setting unit 450 is based on the distribution of the plot when the evaluation results of a plurality of granulated products are plotted on a graph in which the first evaluation parameter is the first axis and the second evaluation parameter is the second axis.
- the granulation unit 410 includes the two rolls 120 facing each other and the raw material supply unit 130 that supplies the raw material between the two rolls 120 as described above.
- a recess for producing a granulated product is formed on at least one of the surfaces.
- the raw material is, for example, a powder raw material.
- the operation condition includes a plurality of operation parameters
- the setting unit 450 selects an operation parameter to be determined based on the type of the evaluation value.
- the types of evaluation values for example, when the user evaluates the granulated product, the types of evaluation values are selected, the evaluation values of the selected types are generated, and the acquisition unit 430 acquires them. Can be.
- the acquisition unit 430 may acquire a type of evaluation value set in advance by a user or the like from a plurality of types of evaluation values.
- the quality of the granulated product produced in the granulation unit 410 is determined in a complex manner by a plurality of operating parameters, and also varies depending on the state of the raw material (water content, etc.) and the environment (temperature and humidity) in which the granulation is performed. To do. Therefore, in order to obtain a granulated product having a desired quality, it is necessary to appropriately adjust a plurality of operation parameters.
- the operating conditions of the granulator 10 are the operating parameters, for example, the rotational speed of the two rolls 120, the pressure applied to the raw material located between the two rolls 120 via the two rolls 120, and the raw material supply unit 130. Including raw material supply per unit time.
- the operating conditions are operating parameters that are directly controlled to set values, that is, the rotational speed of the roll 120 (hereinafter referred to as “roll rotational speed”), the rotational speed of the screw feeder of the raw material supply unit 130 ( In the following, in addition to the material supply amount determined by “feeder rotation speed”) and the pressure applied to the material determined by the pressure of the pressure adjusting unit 140 (hereinafter referred to as “roll pressure”), these are adjusted.
- the operating conditions may include operating parameters such as current consumption, power consumption, amount of movement of the roll 120, strain value generated in the support part of the roll 120, and roll load.
- the operation conditions do not need to include all of these as operation parameters, and any of them may be included.
- the current consumption is the current consumption required for the rotation of the roll.
- the power consumption is power consumption required for rotating the roll.
- the current consumption and power consumption can be obtained from the external output signal of the roll inverter.
- the roll movement amount is a size by which the roll 120 moves from the initial position when the raw material is supplied between the two rolls 120 as described above, and is measured by a distance sensor provided on the roll 120.
- the strain value is a value indicating the amount of strain generated in the support portion of the roll 120 due to stress during driving.
- the roll load is the magnitude of the stress applied to the roll 120 and is measured by a load cell provided on one side of the roll 120.
- the value of each operation parameter during driving of the granulating unit 410 is acquired by the control unit 110 from each sensor or the like.
- the evaluation value is the center coordinate of the probability ellipse when the evaluation results of a plurality of granulated products are plotted on a graph in which the first evaluation parameter is the first axis and the second evaluation parameter is the second axis. , At least one of the length of the major axis, the length of the minor axis, the inclination of the major axis, and the area.
- the evaluation value may be acquired by the acquisition unit 430 obtained by the measurement unit 210 and may be acquired by the setting unit 450, or a generation unit (not shown) provided in the granulator 10 may be acquired by the acquisition unit 430.
- An evaluation value may be generated based on the evaluation information acquired in step S4, and the acquisition unit 430 may acquire the evaluation value.
- FIG. 9 is a diagram illustrating an example of a probability ellipse according to the present embodiment.
- the first evaluation parameter is the crushing strength and the second evaluation parameter is the weight of the granulated substance
- the present invention is not limited to this.
- the first axis is the x-axis (horizontal axis) and the second axis is the y-axis (vertical axis), but the present invention is not limited to this.
- the first axis may be the y-axis
- the second axis may be the x-axis. In this case, the following determination relationship between the slope and the reference may be changed as appropriate.
- the power consumption is controlled to be a specific set value by feedback (FB) control by PID (Proportional-Integral-Derivative Controller) control.
- FB feedback
- PID Proportional-Integral-Derivative Controller
- the power consumption can be used as a guideline for good granulation operation at a specific roll rotation speed. And by controlling so that power consumption may be made constant, the pressure added to a raw material can be kept constant, and the quality of a granulated material can be stabilized.
- the user knows in advance the roll rotation speed, roll pressure, and power consumption that can produce a granulated product with the target production volume and quality, and based on this guideline, initializes the operating conditions. Start driving. In addition, the user adjusts the operating conditions so that the quality matches the production item of the day. When the operation is started, the feeder rotation speed is FB-controlled so that the power consumption becomes a set value.
- the characteristics of the raw material change unexpectedly, there is a problem that it is impossible to detect that the relationship between the power consumption and the quality of the granulated material has changed, and that the quality has changed.
- the granulator 10 can avoid such a problem because it determines whether or not to change the operating condition using the evaluation value obtained from the evaluation result of the actual granulated product.
- FIG. 10 is a flowchart showing a method for producing a granulated product according to this embodiment.
- the manufacturing method of the granulated material which concerns on this embodiment is implement
- the manufacturing method includes an acquisition process (step S20) and a setting process (step S50). After a plurality of granulated products manufactured under the same manufacturing conditions in the granulation step (step S10) are evaluated by the evaluation apparatus as described in the first embodiment, for example, in the acquisition step, the evaluation result is obtained.
- the evaluation information shown is acquired.
- operating conditions are set based on the evaluation information.
- the evaluation information includes a first evaluation parameter and a second evaluation parameter.
- the evaluation is based on the distribution of the plot when the evaluation results of the plurality of granulated products are plotted on a graph in which the first evaluation parameter is the first axis and the second evaluation parameter is the second axis. By comparing the value with a predetermined standard, it is determined whether or not to change the predetermined operating condition.
- FIG. 11 is a flowchart showing the contents of the setting step (step 50) of the method for producing a granulated product according to the present embodiment.
- the setting unit 450 acquires an evaluation value from the acquisition unit 430, and selects an operation parameter to be determined from among the operation conditions based on the acquired evaluation value (step S51).
- the setting unit 450 determines whether or not the acquired evaluation value satisfies a predetermined criterion (step S52).
- the setting unit 450 does not change the selected operation parameter.
- setting unit 450 outputs a signal for changing the selected operation parameter to control unit 110.
- the setting unit 450 can repeatedly determine whether or not to change the operating condition, for example, at regular intervals.
- the acquisition unit 430 acquires the evaluation information and the setting unit 450 changes the operation condition in accordance with a predetermined operation (operation that triggers acquisition of information) performed on the granulator 10 or the like by the user. It may be determined whether or not.
- FIG. 12 is a flowchart showing in detail an example of the setting step (step S50) of the method for manufacturing a granulated product according to the present embodiment.
- the first evaluation parameter is any one of the crushing strength, rotational strength, and drop strength of the granulated product
- the second evaluation parameter is the unit weight of the granulated product.
- the setting unit 450 uses the rotation speed of the two rolls and the pressure applied to the raw material positioned between the two rolls via the two rolls as operating parameters. An example of determining whether or not to change at least one will be described.
- the setting unit 450 acquires information indicating the current power consumption from the control unit 110 and acquires information indicating the reference C regarding the power consumption from the storage unit 440. Then, the setting unit 450 determines whether or not the power consumption satisfies the criterion C (Step S501).
- the reference C is, for example, whether or not it is within a range of ⁇ 5% with respect to a set value in power consumption FB control.
- the setting unit 450 When the power consumption is not within the range, that is, when the reference C is not satisfied (No in step S501), the setting unit 450 further sets the situation where the power consumption is smaller than the range of the reference C as a specific time (hereinafter, “X time”). .) It is determined whether or not the process continues (step S502). Information indicating the time is stored in the storage unit 440 in advance, and can be read and acquired by the setting unit 450.
- the X time is, for example, 10 minutes.
- Step S503 the setting unit 450 continues the FB control as it is without changing the operation condition. This is because the control is being performed so that the power consumption becomes the set value, and it can be expected that the power consumption will satisfy the standard C by continuing the FB control as it is.
- the setting unit 450 further determines that the situation where the power consumption is smaller than the range of the reference C is a specific time (hereinafter, “ Y time ”)) It is determined whether or not the process is continued (step S504).
- Information indicating the time is stored in the storage unit 440 in advance, and can be read and acquired by the setting unit 450.
- Step S504 When the situation where the power consumption is smaller than the range of the reference C has not continued for Y hours or more (No in Step S504), the setting unit 450 changes the operation condition to increase the roll pressure (Step S506). Then, FB control is continued.
- Step S504 When the situation where the power consumption is smaller than the range of the reference C continues for more than Y hours (Yes in Step S504), the setting unit 450 changes the operation condition so as to decrease the roll rotation speed (Step S505). Then, FB control is continued.
- the setting unit 450 further performs determination and the like as follows. First, the setting unit 450 acquires an average value of the crushing strength (simply indicated as “crushing strength” in the drawing), and acquires information indicating the criterion E regarding the crushing strength from the storage unit 440.
- the average value of the crushing strength may be generated by the measurement unit 210 based on the evaluation results of a plurality of granulated products manufactured under the same manufacturing conditions, and the acquisition unit 430 may acquire the average value.
- the setting unit 450 may acquire an average value generated from the acquired evaluation information. Then, the setting unit 450 determines whether or not the average value of the crushing strength satisfies the criterion E (Step S507).
- the criterion E is, for example, whether or not the target value of the crushing strength of the granulated product to be manufactured is within a range of ⁇ 10%.
- the setting unit 450 determines whether or not the energy saving mode is set to ON (step S508).
- the energy saving mode can be set to ON by the user when it is desired to produce a desired granulated product with low power consumption.
- Information indicating ON / OFF of the energy saving mode is input to the input unit (not shown) by the user, and the information stored in the storage unit 440 can be read and acquired by the setting unit 450.
- step S508 When the energy saving mode is OFF (No in step S508), the setting unit 450 does not change the operation condition and continues the FB control as it is.
- the setting unit 450 continues the specific time (hereinafter referred to as “Z time”), the crushing strength satisfies the standard E, and the feeder rotational speed is It is determined whether it is less than the reference F (step S509).
- Information indicating the time and information indicating the reference F regarding the feeder rotation speed are stored in the storage unit 440 in advance, and can be read and acquired by the setting unit 450.
- standard F can be suitably set according to the target distribution of the single-piece
- the setting unit 450 does not change the operating condition and continues the FB control as it is. .
- Step S509 When the crushing strength satisfies the standard E continuously for Z time and the feeder rotational speed is less than the standard F (Yes in Step S509), the setting unit 450 changes the operation condition to lower the roll pressure (Step S510). ). Then, FB control is continued. This is because the power consumption of the entire apparatus can be reduced by lowering the roll pressure.
- the setting unit 450 determines whether or not the average value of the crushing strength is smaller than the range of the reference E (Step S512).
- the setting unit 450 determines whether or not the roll rotation speed is lower than the standard value ⁇ (step S513).
- the standard value ⁇ is a standard setting value of the roll rotation speed, for example, an initial setting value of the roll rotation speed at the start of operation.
- Information indicating the standard value ⁇ is stored in advance in the storage unit 440 and can be read and acquired by the setting unit 450.
- step S513 When the roll rotation speed is lower than the standard value ⁇ (Yes in step S513), the roll rotation speed has been lowered from the standard due to the adjustment and change of the operation conditions so far. Accordingly, the setting unit 450 changes the operating condition to increase the roll rotation speed in order to approach the standard value ⁇ (step S514). Then, FB control is continued. By doing so, it is possible to adjust the operating conditions so as to obtain a desired granulated product by reducing the crushing strength while keeping the roll rotation speed within a standard range.
- the setting unit 450 determines whether or not the roll pressure is higher than the standard value ⁇ (Step S516).
- the standard value ⁇ is a standard set value of roll pressure, for example, an initial set value of roll rotation speed at the start of operation.
- Information indicating the standard value ⁇ is held in the storage unit 440 in advance, and can be read and acquired by the setting unit 450.
- step S5 If the roll pressure is higher than the standard value ⁇ (Yes in step S516), the roll pressure has been raised from the standard by adjusting or changing the operating conditions so far. Accordingly, the setting unit 450 changes the operation condition so as to reduce the roll pressure in order to approach the standard value ⁇ (step S515). Then, FB control is continued. By doing so, it is possible to adjust the operating conditions so as to obtain a desired granulated product by reducing the crushing strength while keeping the roll pressure within a standard range.
- the setting unit 450 determines whether or not the feeder rotation speed is the lower limit value FL (Step S517).
- Information indicating the lower limit value FL is stored in advance in the storage unit 440 and can be read and acquired by the setting unit 450.
- the FB control is performed within a range of the feeder rotation speed that is equal to or greater than the lower limit value FL.
- lower limit FL can be suitably set according to the distribution of the granule's simple substance weight and the target distribution of crushing strength. Details will be described later.
- step S514 a standard range ⁇ having a specific width may be used instead of the standard value ⁇ .
- step S514 may be performed when the roll rotation speed is below the lower limit of the standard range ⁇
- step S516 may be performed when the roll rotation speed is within or above the range. The same applies to the standard value ⁇ in step S516.
- the setting unit 450 changes the operating condition so as to reduce the roll pressure (step S515). Then, FB control is continued. By doing so, the crushing strength of the resulting granulated product can be lowered.
- the setting unit 450 changes the operation condition so as to decrease the set value of the power consumption BF control (step S518). Then, FB control is continued. By doing so, feeder rotation speed falls, the raw material supply amount between the rolls 120 falls, and the crushing strength of the obtained granulated material can be lowered.
- the setting unit 450 determines whether or not the roll pressure is lower than the standard value ⁇ (step S519).
- step S519 If the roll pressure is lower than the standard value ⁇ (Yes in step S519), the roll pressure has been lowered from the standard by adjusting or changing the operating conditions so far. Accordingly, the setting unit 450 changes the operating condition to increase the roll pressure in order to approach the standard value ⁇ (step S523). Then, FB control is continued. By doing so, it is possible to adjust the operating conditions so as to obtain a desired granulated product by increasing the crushing strength while keeping the roll pressure within a standard range.
- the setting unit 450 acquires information indicating the inclination of the long axis of the probability ellipse and information indicating the reference G, and the inclination of the long axis of the probability ellipse is Then, it is determined whether or not the reference G is satisfied (step S520).
- the inclination of the major axis is an angle formed by the x axis and the major axis of the probability ellipse when the evaluation result of the granulated material is plotted on a graph in which the crushing strength is taken as the x axis and the unit weight is taken as the y axis.
- the setting unit 450 can acquire the inclination of the major axis as an evaluation value, for example, from the acquisition unit 430 as described above.
- Information indicating the reference G is stored in advance in the storage unit 440 and can be read and acquired by the setting unit 450. For example, it is assumed that the reference G is satisfied when the inclination of the major axis is not more than a specific magnitude.
- standard G can be suitably set according to the target distribution of the single-piece
- the setting unit 450 further determines whether or not the roll pressure is smaller than the reference H (step S524).
- the standard H is, for example, a specific value for the roll pressure, and is, for example, an allowable upper limit that does not overload the granulator.
- Information indicating the reference H is stored in advance in the storage unit 440 and can be read and acquired by the setting unit 450.
- step S524 When the roll pressure is smaller than the reference H (Yes in step S524), the setting unit 450 changes the operation condition to increase the roll pressure (step S523). Then, FB control is continued. By doing so, the crushing strength of the granulated product can be effectively increased.
- Step S524 When the roll pressure is equal to or higher than the reference H (No in Step S524), the roll pressure cannot be increased any more, so the setting unit 450 changes the operation condition so as to decrease the roll rotation speed (Step S525). Then, FB control is continued. By doing so, the crushing strength of the granulated product can be increased.
- the setting unit 450 determines whether or not the feeder rotation speed is the upper limit value FH (step S521).
- Information indicating the upper limit value FH is stored in advance in the storage unit 440 and can be read and acquired by the setting unit 450.
- the FB control is performed within a range of the feeder rotation speed that is equal to or less than the upper limit value FH.
- the upper limit value FH can be appropriately set according to the distribution of the granulated material as a target and the target distribution of crushing strength. Details will be described later.
- step S521 When the feeder rotational speed is the upper limit value FH (Yes in step S521), the feeder rotational speed cannot be increased any more. Then, it progresses to above-mentioned step S524, and the setting part 450 determines whether a roll pressure is smaller than the reference
- the setting unit 450 changes the operation condition to increase the set value of the power consumption BF control (step S522). Then, FB control is continued. By doing so, the feeder rotation speed is increased, the raw material supply amount between the rolls 120 is increased, and the crushing strength of the obtained granulated product can be increased.
- the setting unit 450 acquires the inclination of the long axis as the evaluation value, and is positioned between the two rolls via the rotation speed of the two rolls and the two rolls as the operation parameter. It is determined whether or not at least one of the pressures applied to the raw material is changed (step S520). By carrying out like this, the operation parameter which can adjust the characteristic of a granulated material effectively can be changed.
- the granulator 10 according to the present embodiment can stably produce a granulated product of a desired quality without depending on the skill level of the user.
- the setting unit 450 when the setting unit 450 increases or decreases the power consumption setting value, roll pressure, and roll rotation speed, it may be increased or decreased by a predetermined unit amount.
- Each unit amount is stored in advance in the storage unit 440 and can be read and acquired by the setting unit 450.
- an adjustable range may be provided for each of the roll rotation speed, the roll pressure, and the feeder rotation speed, and the adjustment may be performed only within the ranges. By doing so, a desired granulated product can be obtained while ensuring the stability of the granulator 10 and its operation.
- the operation parameter to be adjusted instead is determined in advance, and the information is stored in the storage unit.
- the operation parameter to be adjusted may be adjusted instead.
- FIG. 13 is a diagram showing the relationship between the characteristics of the granulated product and the operating parameters. The responsiveness of the crushing strength by adjusting the feeder rotation speed will be described below.
- FIG. 13A is a diagram showing the relationship between the feeder rotational speed and roll pressure and the thickness of the granulated product
- FIG. 13B is a diagram showing the relationship between the feeder rotational speed and roll pressure and the crushing strength of the granulated product
- FIG. 13C is a diagram showing the relationship between the feeder rotation speed and roll pressure and the apparent density of the granulated product. The apparent density refers to the mass per unit volume including the voids inside the granulated product.
- FIG. 13B shows that when the feeder rotation speed is increased at a specific roll pressure, the crushing strength has a maximum value at a certain feeder rotation speed. For this reason, it is effective to change the feeder rotation speed in order to adjust the crushing strength in a range sufficiently away from this maximum value, but in the vicinity of the maximum value, even if the feeder rotation speed is changed, the crushing strength is reduced. It can be seen that the responsiveness is poor and the crushing strength cannot be adjusted efficiently.
- FIG. 13C also shows that the apparent density reaches saturation at a certain feeder rotation speed, and the effect of increasing the apparent density cannot be obtained efficiently even if the feeder rotation speed is increased further. And it turns out that crushing strength and apparent density can be raised exceeding the maximum value and saturation value by raising roll pressure.
- the long axis of the probability ellipse becomes large in the graph in which the intensity is on the x-axis and the unit weight is on the y-axis. This is considered to be due to an increase in the number of granulated materials whose crushing strength cannot be sufficiently increased even if the weight of the single body is increased due to the state close to the maximum value.
- FIG. 14 (a) is a diagram showing an example of a probability ellipse when the horizontal axis indicates the crushing strength and the vertical axis indicates the unit weight.
- FIG.14 (b) is a figure which shows the relationship between the crushing strength of a granulated material, a single-piece
- a probability ellipse such as the probability ellipse 602 is obtained by avoiding the probability ellipse extending from the probability ellipse 601 in FIG. There is a need.
- FIG. 14 (b) is a diagram showing an example of a probability ellipse when the horizontal axis indicates the crushing strength and the vertical axis indicates the unit weight.
- FIG.14 (b) is a figure which shows the relationship between the crushing strength of a granulated material, a single-piece
- a probability ellipse such as the probability ellipse 602 is obtained by avoiding the probability
- the crushing strength is saturated or operating conditions where the target strength is a saturated value
- variations in the unit weight that is, each granulated product
- the operating conditions are suitable such that the granulated material is thick and the roll pressure is low. Therefore, the reference G relating to the inclination of the long axis may be increased, and the reference F relating to the feeder rotation speed, the lower limit value FL, and the upper limit value FH may be set higher.
- FIG. 15 is a diagram showing another example of a probability ellipse when the horizontal axis indicates the crushing strength and the vertical axis indicates the unit weight.
- the probability ellipse 604 in this figure has a smaller variation in unit weight than the probability ellipse 603.
- the operating conditions are suitable such that the granulated material is thin and the roll pressure is high. Therefore, the reference G relating to the inclination of the major axis may be set small, and the reference F relating to the feeder rotation speed, the lower limit value FL, and the upper limit value FH may be set low.
- an operation mode corresponding to the distribution to be obtained as described above may be prepared so that the values of the reference F, the lower limit value FL, the upper limit value FH, and the reference G can be switched together.
- roll load (kN)
- roll movement amount (current consumption, or roll pressure
- current consumption or roll pressure
- Rotational strength, drop strength, or density may be used instead of crushing strength. By doing so, it is possible to produce a granulated product that satisfies the desired criteria for each of these characteristics.
- the characteristics of the granulated product can be brought close to the target value while balancing the two evaluation parameters.
- the granulator 10 according to the present embodiment is the same as the granulator 10 according to the third embodiment except for the points described below.
- the first evaluation parameter is the apparent density of the granulated product
- the second evaluation parameter is any one of the crushing strength, rotational strength, and drop strength of the granulated product. . Details will be described below.
- FIG. 16 is a diagram illustrating an example of a probability ellipse according to the present embodiment.
- the setting unit 450 determines whether or not to change the raw material supply amount per hour by the raw material supply unit 130 as an operation parameter. Judging.
- the major axis of the probability ellipse is raised to the right and the minor axis is lowered to the right. It explains about. For example, when the major axis is lowered to the right, the operation may be stopped because an abnormality has occurred.
- the reference used for each determination of the setting unit 450 is held in the storage unit 440 in advance, and can be read and acquired by the setting unit 450.
- the setting unit 450 can repeatedly determine whether or not to change the operating conditions, for example, at regular intervals.
- the acquisition unit 430 acquires the evaluation information and the setting unit 450 changes the operation condition in accordance with a predetermined operation (operation that triggers acquisition of information) performed on the granulator 10 or the like by the user. It may be determined whether or not.
- the first evaluation parameter is one of the apparent density (hereinafter simply referred to as “density”) of the granulated product
- the second evaluation parameter is any one of the crushing strength, rotational strength, and drop strength of the granulated product.
- density apparent density
- shength means that the longer the long axis, the greater the variation in the degree of solidification. And it is guessed that the granulated material with which the supply amount of a raw material is not enough is mixed, and the dispersion
- the setting unit 450 determines whether or not to change the raw material supply amount per hour by the raw material supply unit 130 as an operation parameter. Specifically, when the length of the long axis is larger than a predetermined reference value, setting unit 450 adjusts the operating condition to increase the feeder rotation speed. On the other hand, when the major axis length is not larger than a predetermined reference, the feeder rotation speed is not changed.
- the setting unit 450 determines whether to change the roll movement amount instead of the raw material supply amount per hour by the raw material supply unit 130 as an operation parameter. Good. In this case, specifically, when the length of the long axis is larger than a predetermined reference value, the setting unit 450 adjusts the operation condition so as to increase the roll movement amount (distance between the two rolls 120). On the other hand, when the length of the long axis is not larger than a predetermined reference, the roll movement amount is not changed.
- the roll movement amount can be FB-controlled instead of the power consumption of the second embodiment so as to be maintained at a set value by adjusting the feeder rotational speed, for example.
- the first evaluation parameter is the apparent density of the granulated product
- the second evaluation parameter is any one of the crushing strength, rotational strength, and drop strength of the granulated product.
- step S50 when the evaluation value is the length of the short axis, the setting unit 450 uses the distance between the two rolls 120 as the operation parameter and 2 via the two rolls 120. It is determined whether or not at least one of the pressures applied to the raw material positioned between the two rolls 120 is changed.
- the setting unit 450 determines whether to change the roll pressure as the operation parameter. Specifically, when the length of the short axis is larger than a predetermined reference value, setting unit 450 adjusts the operating condition so as to lower the roll pressure. On the other hand, when the short axis length is not larger than a predetermined reference, setting unit 450 does not change the roll pressure.
- step S50 when the evaluation value is the inclination of the long axis, the setting unit 450 applies the raw material positioned between the two rolls 120 via the two rolls 120 as the operation parameter. Determine whether to change the applied pressure.
- the setting unit 450 determines whether or not to change the roll pressure as the operation parameter when the evaluation value is the inclination of the long axis. Specifically, when the inclination of the major axis is smaller than a predetermined reference value, setting unit 450 adjusts the operating condition so as to increase the roll pressure. On the other hand, when the inclination of the long axis is not smaller than a predetermined reference, the setting unit 450 does not change the roll pressure.
- the setting unit 450 may output a signal that causes a display unit (not shown) to display characters or the like that prompt the user to replace the roll 120 when the inclination of the long axis is smaller than a predetermined reference value. This is because wear of the roll is estimated as described above. In addition to or instead of this, a signal that causes the display unit to display characters or the like that prompt the user to confirm whether or not the side leakage of the powder has occurred may be output.
- the setting unit 450 outputs a signal for displaying a character or the like for urging the replacement of the roll 120 on a display unit (not shown) when the length of at least one of the long axis and the short axis is longer than a predetermined reference value. It may be. This is because wear of the roll 120 is estimated also in these cases.
- step S50 the setting unit 450 determines whether or not to change at least one of the feeder rotation speed and the roll pressure as the operation parameter when the evaluation value is the area of the probability ellipse. .
- the setting unit 450 determines to change at least one of the feeder rotation speed and the roll pressure as the operation parameter. Further, it is determined whether or not the lengths of the major axis and the minor axis are larger than a predetermined reference. When the length of the long axis is larger than a predetermined reference, the operating conditions are adjusted to increase the feeder rotation speed.
- the setting unit 450 When the length of the long axis is not larger than a predetermined reference, the setting unit 450 does not change the feeder rotation speed. Further, when the length of the short axis is larger than a predetermined reference, the setting unit 450 adjusts the operation condition so as to reduce the roll pressure. When the length of the short axis is not larger than a predetermined reference, the setting unit 450 does not change the roll pressure.
- the roll movement amount may be adjusted in place of the feeder rotation speed.
- the setting unit 450 determines whether or not to change at least one of the feeder rotation speed and the roll pressure as the operation parameter when the evaluation value is the center coordinate of the probability ellipse.
- the setting unit 450 determines whether or not the center coordinates are within a reference range including the target point. When the center coordinates are within the reference range, the setting unit 450 does not change the operating conditions.
- the setting unit 450 determines to change at least one of the feeder rotation speed and the roll pressure, and further, a line segment connecting the acquired center coordinates and the target point, and a probability ellipse It is determined whether the angle formed by the major axis is smaller than the reference.
- the angle is smaller than a predetermined reference, it can be said that the target point is mainly displaced in the major axis direction of the probability ellipse with respect to the center coordinate, and both the intensity and the density can be brought close to the target point.
- the setting unit 450 changes the feeder rotation speed so that the center coordinates are close to the target point.
- the feeder rotation speed is changed to be increased by a predetermined width.
- the feeder rotation speed is changed to be lowered by a predetermined width.
- the setting unit 450 changes the roll pressure so that the setting unit 450 brings the center coordinates closer to the target point. Specifically, when the y coordinate of the center coordinate is smaller than the y coordinate of the target point, the roll pressure is changed to be increased by a predetermined width. On the other hand, when the y coordinate of the center coordinate is larger than the y coordinate of the target point, the roll pressure is changed so as to be lowered by a predetermined width.
- the central coordinates are considered to approach the target point as follows. For example, when it is first determined that the angle is not smaller than a predetermined reference, the roll pressure is changed. Accordingly, it is considered that the angle becomes smaller as the center coordinate approaches the target point. And when it determines with the said angle being smaller than a reference
- the setting unit 450 stores a predetermined evaluation parameter to be prioritized from the storage unit 440 out of the first evaluation parameter and the second evaluation parameter. Either the feeder rotation speed or the roll pressure may be changed so that the evaluation parameter is obtained and the evaluation parameter approaches the target point. By doing so, the parameter to be prioritized can be brought closer to the desired value more quickly.
- the setting unit 450 includes, among the adjustments of the operating conditions according to the present embodiment, the first modification, the second modification, the third modification, the fourth modification, and the third embodiment. Two or more may be performed in parallel. Further, these adjustments may be switched as appropriate.
- FIG. 17 is a block diagram showing the configuration and usage environment of the control device 50 of the granulator according to the present embodiment.
- the control device 50 is a control device for the granulator 10 that operates under set operating conditions to produce a granulated product.
- the control device 50 includes an acquisition unit 430 and a setting unit 450.
- the acquisition part 430 acquires the evaluation information which shows the evaluation result of the some granulated material manufactured on the same manufacturing conditions.
- the setting unit 450 sets operating conditions based on the evaluation information.
- the evaluation information includes a first evaluation parameter and a second evaluation parameter.
- the setting part 450 was based on the distribution of the said plot at the time of plotting the evaluation result of a several granulated material on the graph which took the 1st evaluation parameter for the 1st axis
- the evaluation value By comparing the evaluation value with a predetermined standard, it is determined whether or not the predetermined operating condition is to be changed. This will be described in detail below.
- the control device 50 controls the granulator 10 so as to produce a granulated product by any of the methods described in the second to fourth embodiments.
- the acquisition unit 430 and the setting unit 450 according to the present embodiment have the same configuration as the acquisition unit 430 and the setting unit 450 according to any of the second to fourth embodiments, respectively.
- the granulator 10 includes a granulation unit 410 and a control unit 110.
- the configurations of the granulating unit 410 and the control unit 110 according to this embodiment are the same as the configurations of the granulating unit 410 and the control unit 110 according to the second or third embodiment, respectively.
- the granulator 10 and the control device 50 include a storage unit 440 and a storage unit 441, respectively.
- the said control method is a control method of the granulator which operate
- evaluation information indicating the evaluation results of a plurality of granulated products manufactured under the same manufacturing conditions is acquired.
- operating conditions are set based on the evaluation information.
- the evaluation information includes a first evaluation parameter and a second evaluation parameter.
- the plurality of granules are formed on a graph in which the first evaluation parameter is taken as the first axis and the second evaluation parameter is taken as the second axis.
- control apparatus 50 may be an apparatus integrated with the measurement unit 210 that measures the evaluation results of a plurality of granulated products manufactured under the same manufacturing conditions.
- a granulating part that operates under set operating conditions to produce a granulated product;
- An acquisition unit that acquires evaluation information indicating an evaluation result of a plurality of the granulated products manufactured under the same manufacturing conditions;
- a setting unit for setting the operating condition based on the evaluation information;
- a storage unit that stores comparison data indicating the relationship between the comparison evaluation information that is the evaluation information to be compared and the comparison operation condition that is the operation condition when the comparison evaluation information is obtained;
- Have The setting unit A granulator that adjusts the operating conditions based on the evaluation information acquired by the acquisition unit and the comparison data.
- the operating conditions include a plurality of operating parameters
- the said setting part is a granulator which specifies the said operation parameter which should be adjusted based on the said evaluation information and the said comparison data, and calculates the adjustment amount of the said operation parameter.
- the granulation part is Two rolls facing each other; A raw material supply unit for supplying a raw material between the two rolls; With A recess is formed on at least one of the surfaces of the two rolls,
- the operating conditions are: rotation speed of the two rolls, pressure applied to the raw material positioned between the two rolls via the two rolls, and raw material supply amount per hour by the raw material supply unit.
- Granulator containing two or more.
- the evaluation information is obtained when the evaluation result of the granulated product is plotted on a plane defined with the first evaluation parameter of the granulated product as the x axis and the second evaluation parameter of the granulated product as the y axis.
- a granulator comprising at least one of the center coordinates of the probability ellipse, the length of the major axis, the length of the minor axis, the inclination of the major axis, and the area. 5.
- a method for producing a granulated product by a granulator Obtaining evaluation information indicating the evaluation results of a plurality of the granulated products manufactured under the same manufacturing conditions, Obtain comparative data indicating the relationship between the comparative evaluation information that is the evaluation information to be compared and the comparative operating conditions that are the operating conditions when the comparative evaluation information is obtained, A method for producing a granulated product, which adjusts the operating conditions based on the evaluation information and the comparison data.
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Abstract
Description
造粒機の運転条件を評価する評価装置であって、
同一の製造条件で前記造粒機によって製造された複数の造粒物の評価結果を示す評価情報を、複数取得する評価情報取得部と、
前記複数の評価情報を互いに比較したデータである評価データを生成する評価データ生成部と、
を備える評価装置が提供される。
造粒機の運転条件を評価する評価方法であって、
同一の製造条件で前記造粒機によって製造された複数の造粒物の評価結果を示す評価情報を、複数取得し、
前記複数の評価情報を互いに比較したデータである評価データを生成して表示し、
前記評価データは、前記複数の評価情報を互いに識別可能な状態で同一のグラフに表示するための表示データである
評価方法が提供される。
造粒機の運転条件を評価する評価装置を実現するためのコンピュータプログラムであって、
コンピュータを、
同一の製造条件で前記造粒機によって製造された複数の造粒物の評価結果を示す評価情報を、複数取得する評価情報取得手段、および、
前記複数の評価情報を互いに比較したデータである評価データを生成する評価データ生成手段として機能させるためのコンピュータプログラムが提供される。
設定された運転条件で動作して造粒物を製造する造粒部と、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得部と、
前記評価情報に基づいて前記運転条件を設定する設定部と、
を備え、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定部は、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断する、
造粒機
が提供される。
設定された運転条件で動作して造粒物を製造する造粒機の制御装置であって、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得部と、
前記評価情報に基づいて前記運転条件を設定する設定部と、
を備え、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定部は、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断する、
造粒機の制御装置
が提供される。
設定された運転条件で動作して造粒物を製造する造粒機の制御方法であって、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得工程と、
前記評価情報に基づいて前記運転条件を設定する設定工程と、
を備え、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定工程では、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断する、
造粒機の制御方法が提供される。
造粒機により造粒物を製造する方法であって、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得工程と、
前記評価情報に基づいて前記運転条件を設定する設定工程と、
を含み、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定工程では、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断する、
造粒物の製造方法
が提供される。
設定された運転条件で動作して造粒物を製造する造粒機の制御装置を実現するためのコンピュータプログラムであって、
コンピュータを、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得手段、および
前記評価情報に基づいて前記運転条件を設定する設定手段として機能させ、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定手段は、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断するコンピュータプログラム
が提供される。
図1は、第1の実施形態に係る評価装置20の使用環境を説明する図である。図2は、評価装置20の構成を示すブロック図である。以下において、データの流れを実線矢印で示し、物の流れを破線矢印で示す。
表示させるグラフは、たとえば2次元グラフや3次元グラフ等の多次元グラフでありえる。以下では、2次元グラフの例について説明する。
評価データは複数の評価パラメータそれぞれの値を含んでいる。グラフのx軸は第1の評価パラメータであり、かつグラフのy軸は第2の評価パラメータである。本図では、第1の評価パラメータが見かけ密度であり、第2の評価パラメータが圧壊強度である場合の例を示している。グラフには、各造粒物の評価結果がプロットされている。プロットは、造粒物識別情報毎にマーカー形状や色を変える等して、造粒物識別情報毎に識別可能となっている。このように、x軸を第1の評価パラメータ、y軸を第2の評価パラメータとする多次元グラフを生成することで、複数の評価パラメータの状態を容易に視認できる。
図4は、第2の実施形態に係る造粒機10の構成を示すブロック図である。
本実施形態に係る造粒機10は、造粒部410、取得部430、設定部450、および記憶部440を備える。造粒部410は、設定された運転条件で動作して造粒物を製造する。取得部430は、同一の製造条件で製造された複数の造粒物の評価結果を示す評価情報を取得する。設定部450は、評価情報に基づいて運転条件を設定する。記憶部440は、比較データを記憶する。比較データは、比較対象となる評価情報である比較評価情報と、比較評価情報が得られるときの運転条件である比較運転条件との関係を示す。設定部450は、取得部430が取得した評価情報、および比較データに基づいて、運転条件を調整する。以下に、詳細に説明する。
本製造方法では、まず、造粒部410で造粒物を製造する(S10)。計測部210は製造された造粒物を計測して評価情報を生成する。次いで、取得部430が計測部210から評価情報を取得する(S20)。次いで、設定部450が記憶部440から比較データを取得し(S30)、評価情報と比較データに基づいて運転条件を調整する(S40)。以下に詳しく説明する。
まず、A1とa1とを通る直線S付近に目標とする中心座標があるか否かを判定する(ステップS110)。たとえば、図6に示したD1が目標とする中心座標である場合のように、直線S付近に目標とする中心座標がある場合(ステップS110:YES)、運転条件bと比較運転条件Bとで値が異なっている運転パラメータ、すなわち原料供給量を、続いて調整すればよいと判断し、調整すべき運転パラメータとして特定する(ステップS130)。なお、本図では、A1およびa1を通る直線Sを矢印で示している。また、直線付近とは、直線からの距離があらかじめ定めた範囲内である領域内を示す。運転パラメータの調整量Δbは、A1からa1に向かう線分の延長線上、すなわち、a1に対してA1と反対側に目標とする中心座標がある場合にΔb=(d×Δb3)/Lの関係により算出することができる。一方、それ以外の場合にΔb=-(d×Δb3)/Lの関係により算出することができる。なお、Lは、A1とa1との距離、dは、目標とする中心座標とa1との距離である。
本実施形態に係る造粒機10および造粒物の製造方法によれば、第1の実施形態と同様の作用および効果が得られる。加えて、運転条件の調整が自動的にされるため、所望の特性を有する造粒物を効率良く製造することができる。
図8は、本実施形態に係る造粒機10の構成例を示すブロック図である。本実施形態に係る造粒機10は、以下に説明する点を除いて第2の実施形態に係る造粒機10と同様である。
標準値βは、ロール圧力の標準的な設定値であり、たとえば運転スタート時のロール回転速度の初期設定値である。標準値βを示す情報は、予め記憶部440に保持されており、設定部450が読み出して取得できる。
本実施形態に係る造粒機10は、以下に説明する点を除いて、第3の実施形態に係る造粒機10と同様である。本実施形態に係る造粒機10において、第1の評価パラメータは造粒物の見かけ密度であり、第2の評価パラメータは造粒物の圧壊強度、回転強度、および落下強度のいずれかである。以下に詳細を説明する。
図17は、本実施形態に係る造粒機の制御装置50の構成と使用環境を示すブロック図である。制御装置50は、設定された運転条件で動作して造粒物を製造する造粒機10の制御装置である。制御装置50は、取得部430、および設定部450を備える。取得部430は、同一の製造条件で製造された複数の造粒物の評価結果を示す評価情報を取得する。設定部450は、評価情報に基づいて運転条件を設定する。評価情報は、第1評価パラメータ及び第2評価パラメータを含む。そして、設定部450は、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた運転条件を変更するか否かを判断する。以下に詳しく説明する。
1.設定された運転条件で動作して造粒物を製造する造粒部と、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得部と、
前記評価情報に基づいて前記運転条件を設定する設定部と、
比較対象となる前記評価情報である比較評価情報と、前記比較評価情報が得られるときの前記運転条件である比較運転条件との関係を示す比較データを記憶する記憶部と、
を有し、
前記設定部は、
前記取得部が取得した前記評価情報、および前記比較データに基づいて、前記運転条件を調整する
造粒機。
2.1.に記載の造粒機において、
前記運転条件は複数の運転パラメータを含み、
前記設定部は、前記評価情報および前記比較データに基づいて、調整すべき前記運転パラメータを特定すると共に、当該運転パラメータの調整量を算出する
造粒機。
3.1.または2,に記載の造粒機において、
前記造粒部は、
互いに対向している2つのロールと、
前記2つのロールの間に原料を供給する原料供給部と、
を備え、
前記2つのロールの表面の少なくとも一方に凹部が形成されており、
前記運転条件は、前記2つのロールの回転速度、前記2つのロールを介して前記2つのロールの間に位置する原料に加えられる圧力、前記原料供給部による時間あたりの原料供給量のうち、2つ以上を含む造粒機。
4.1.から3.のいずれか一つに記載の造粒機において、
前記評価情報は、前記造粒物の第1の評価パラメータをx軸、前記造粒物の第2の評価パラメータをy軸として定義される平面に前記造粒物の評価結果をプロットした場合における確率楕円の中心座標、長軸の長さ、短軸の長さ、長軸の傾き、および面積の少なくとも一つを含む造粒機。
5.造粒機により造粒物を製造する方法であって、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得し、
比較対象となる前記評価情報である比較評価情報と、前記比較評価情報が得られるときの運転条件である比較運転条件との関係を示す比較データを取得し、
前記評価情報、および前記比較データに基づいて、前記運転条件を調整する造粒物の製造方法。
Claims (24)
- 造粒機の運転条件を評価する評価装置であって、
同一の製造条件で前記造粒機によって製造された複数の造粒物の評価結果を示す評価情報を、複数取得する評価情報取得部と、
前記複数の評価情報を互いに比較したデータである評価データを生成する評価データ生成部と、
を備える評価装置。 - 請求項1に記載の評価装置において、
前記評価データ生成部は、前記評価データとして、前記複数の評価情報を互いに識別可能な状態で同一のグラフに表示するための表示データを生成する評価装置。 - 請求項2に記載の評価装置において、
前記グラフは多次元グラフであり、
前記評価データは複数の評価パラメータそれぞれの値を含んでおり、
前記多次元グラフのx軸は第1の前記評価パラメータであり、かつ前記多次元グラフのy軸は第2の前記評価パラメータである評価装置。 - 請求項3に記載の評価装置において、
前記評価データ生成部は、前記複数の評価情報毎に前記x軸および前記y軸で定義される平面における確率楕円を生成する評価装置。 - 請求項3又は4に記載の評価装置において、
前記第1の評価パラメータは前記造粒物の単体重量、圧壊強度、回転強度、落下強度、見かけ密度、重さ、寸法、および体積のうちの一つであり、前記第2の評価パラメータは前記単体重量、前記圧壊強度、前記回転強度、前記落下強度、前記見かけ密度、前記重さ、前記寸法、および前記体積の残りのうちの一つである評価装置。 - 請求項1から5のいずれか一項に記載の評価装置において、
前記複数の評価情報は、それぞれロットナンバーに対応づけられており、
前記評価データは、前記ロットナンバーの異なる前記複数の評価情報を互いに比較したデータである評価装置。 - 請求項1から6のいずれか一項に記載の評価装置において、
前記評価情報取得部は、複数の前記製造条件ごとに前記評価情報を取得する評価装置。 - 請求項7に記載の評価装置において、
前記造粒機は、
互いに対向している2つのロールと、
前記2つのロールの間に原料を供給する原料供給部と、
を有し、
前記2つのロールの表面の少なくとも一方に凹部が形成されており、
前記複数の製造条件は、前記2つのロールの回転速度、前記2つのロールを介して前記2つのロールの間に位置する前記原料に加えられる圧力、前記原料供給部による単位時間あたりの原料供給量、前記原料の種類、前記原料の温度、および湿度の少なくとも一つが互いに異なる評価装置。 - 造粒機の運転条件を評価する評価方法であって、
同一の製造条件で前記造粒機によって製造された複数の造粒物の評価結果を示す評価情報を、複数取得し、
前記複数の評価情報を互いに比較したデータである評価データを生成して表示し、
前記評価データは、前記複数の評価情報を互いに識別可能な状態で同一のグラフに表示するための表示データである
評価方法。 - 造粒機の運転条件を評価する評価装置を実現するためのコンピュータプログラムであって、
コンピュータを、
同一の製造条件で前記造粒機によって製造された複数の造粒物の評価結果を示す評価情報を、複数取得する評価情報取得手段、および、
前記複数の評価情報を互いに比較したデータである評価データを生成する評価データ生成手段として機能させるためのコンピュータプログラム。 - 設定された運転条件で動作して造粒物を製造する造粒部と、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得部と、
前記評価情報に基づいて前記運転条件を設定する設定部と、
を備え、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定部は、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断する、
造粒機。 - 請求項11に記載の造粒機において、
前記運転条件は複数の運転パラメータを含み、
前記設定部は、前記評価値の種類に基づいて、変更するか否かの判断対象となる前記運転パラメータを選択する、
造粒機。 - 請求項12に記載の造粒機において、
前記評価値は、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の確率楕円の中心座標、長軸の長さ、短軸の長さ、長軸の傾き、および面積の少なくとも一つを含む造粒機。 - 請求項13に記載の造粒機において、
前記造粒部は、
互いに対向している2つのロールと、
前記2つのロールの間に原料を供給する原料供給部と、
を備え、
前記2つのロールの表面の少なくとも一方に前記造粒物を製造するための凹部が形成されている造粒機。 - 請求項14に記載の造粒機において、
第1の評価パラメータは前記造粒物の見かけ密度であり、第2の評価パラメータは前記造粒物の圧壊強度、回転強度、および落下強度のいずれかであり、
前記設定部は、前記評価値が長軸の長さである場合、前記運転パラメータとして前記原料供給部による時間あたりの原料供給量を変更するか否かを判断する造粒機。 - 請求項14または15に記載の造粒機において、
第1の評価パラメータは前記造粒物の見かけ密度であり、第2の評価パラメータは前記造粒物の圧壊強度、回転強度、および落下強度のいずれかであり、
前記設定部は、前記評価値が短軸の長さである場合、前記運転パラメータとして前記2つのロールを介して前記2つのロールの間に位置する原料に加えられる圧力を変更するか否かを判断する造粒機。 - 請求項14から16のいずれか一項に記載の造粒機において、
第1の評価パラメータは前記造粒物の見かけ密度であり、第2の評価パラメータは前記造粒物の圧壊強度、回転強度、および落下強度のいずれかであり、
前記設定部は、前記評価値が長軸の傾きである場合、前記運転パラメータとして前記2つのロールを介して前記2つのロールの間に位置する原料に加えられる圧力を変更するか否かを判断する造粒機。 - 請求項12に記載の造粒機において、
第1の評価パラメータは前記造粒物の圧壊強度、回転強度、および落下強度のいずれかであり、第2の評価パラメータは前記造粒物の単体重量であり、
前記設定部は、前記評価値が長軸の傾きである場合、前記運転パラメータとして前記2つのロールの回転速度および前記2つのロールを介して前記2つのロールの間に位置する原料に加えられる圧力のうち少なくともいずれかを変更するか否かを判断する造粒機。 - 請求項11に記載の造粒機において、
比較対象となる前記評価情報である比較評価情報と、前記比較評価情報が得られるときの前記運転条件である比較運転条件との関係を示す比較データを記憶する記憶部をさらに有し、
前記設定部は、さらに、前記比較データに基づいて、前記運転条件を調整する、
造粒機。 - 設定された運転条件で動作して造粒物を製造する造粒機の制御装置であって、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得部と、
前記評価情報に基づいて前記運転条件を設定する設定部と、
を備え、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定部は、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断する、
造粒機の制御装置。 - 設定された運転条件で動作して造粒物を製造する造粒機の制御方法であって、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得工程と、
前記評価情報に基づいて前記運転条件を設定する設定工程と、
を備え、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定工程では、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断する、
造粒機の制御方法。 - 造粒機により造粒物を製造する方法であって、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得工程と、
前記評価情報に基づいて前記運転条件を設定する設定工程と、
を含み、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定工程では、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断する、
造粒物の製造方法。 - 請求項22に記載の造粒物の製造方法において、
さらに、比較対象となる前記評価情報である比較評価情報と、前記比較評価情報が得られるときの前記運転条件である比較運転条件との関係を示す比較データを取得し、
前記評価情報、および前記比較データに基づいて、前記運転条件を調整する造粒物の製造方法。 - 設定された運転条件で動作して造粒物を製造する造粒機の制御装置を実現するためのコンピュータプログラムであって、
コンピュータを、
同一の製造条件で製造された複数の前記造粒物の評価結果を示す評価情報を取得する取得手段、および
前記評価情報に基づいて前記運転条件を設定する設定手段として機能させ、
前記評価情報は、第1評価パラメータ及び第2評価パラメータを含み、
前記設定手段は、第1評価パラメータを第1軸、第2評価パラメータを第2軸に取ったグラフ上に前記複数の造粒物の評価結果をプロットした場合の当該プロットの分布に基づいた評価値と、予め定められた基準とを比較することにより、予め定められた前記運転条件を変更するか否かを判断するコンピュータプログラム。
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JPWO2016063897A1 (ja) | 2017-05-25 |
JP6581267B2 (ja) | 2019-09-25 |
JP6651455B2 (ja) | 2020-02-19 |
JP2019022888A (ja) | 2019-02-14 |
US10899099B2 (en) | 2021-01-26 |
US20210086464A1 (en) | 2021-03-25 |
US20180036981A1 (en) | 2018-02-08 |
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