CN115956008A

CN115956008A - Purification device

Info

Publication number: CN115956008A
Application number: CN202180050266.5A
Authority: CN
Inventors: 田川澄夫; 冈元健志
Original assignee: Satake Corp
Current assignee: Satake Corp
Priority date: 2020-08-18
Filing date: 2021-07-28
Publication date: 2023-04-11
Also published as: JP2022034481A; EP4201536A1; EP4201536A4; WO2022038979A1

Abstract

The purification device of the present invention comprises: a screening unit configured to have a screen and to screen the object while conveying the object to be processed on the screen in a predetermined direction; a plurality of rectifying chambers which are communicated with the inside of the screening part, are arranged above the screening part and are divided in a manner of being arranged along a specified direction; a plurality of airflow rate adjustment valves provided in the plurality of rectifying chambers, respectively, and configured to adjust an airflow rate of air that flows upward through the screen in the corresponding rectifying chamber; a plurality of motors configured to drive the plurality of airflow rate adjustment valves, respectively, to control opening degrees of the plurality of airflow rate adjustment valves; and a control device configured to control the plurality of motors.

Description

Purification device

Technical Field

The present invention relates to a purification apparatus for performing purification treatment in a milling process of grains.

Background

Conventionally, an apparatus (generally referred to as a purifying apparatus) for performing a purifying process in a milling process of grains (typically, wheat) is known (for example, patent document 1). For example, in a wheat milling process, wheat grains are refined, tempered, and ground to form a semi-finished product called stock. The stock material, after being screened, is fed to a purification device. In the purification plant, the stock is separated into endosperm particles, called grits, and epidermal fragments, called wheat bran.

More specifically, the purification device includes: a screening unit configured to screen the object while conveying the object on a screen in a predetermined direction; a plurality of rectifying chambers which are communicated with the interior of the sieving part, are arranged above the sieving part and are divided in a manner of being arranged along a specified direction; and a plurality of airflow regulating valves respectively provided in the plurality of rectifying chambers. The plurality of airflow rate adjustment valves adjust the airflow rate of the air that flows upward through the screens in the corresponding rectification chambers. When the stock is fed onto the screen while the screen is vibrated, the stock is conveyed in a predetermined direction on the screen. At this time, the relatively heavy coarse flour is dropped through the mesh in order, and the relatively light wheat bran is floated by the air flow (hereinafter referred to as an ascending air flow) flowing upward in the rectifying chamber and sucked. Since the mesh size of the screen gradually increases toward the downstream, the roughage falls from the screen first as the particle size of the roughage decreases. Therefore, the purification apparatus can also perform classification according to the particle size of the masa flour simultaneously with the removal of the bran.

In such a purification apparatus, if the ascending air flow is weak, the bran does not float, and as a result, the bran cannot be removed with high accuracy. On the other hand, when the rising air flow is strong, the relatively small-diameter coarse flour, wheat flour that has become powdery, and wheat bran float and are sucked together, and as a result, the milling yield decreases. Thus, in the purification apparatus, it is required to control the intensity of the ascending gas flow within an appropriate range by adjusting the opening degree of the airflow rate adjustment valve.

In the conventional purification apparatus, such adjustment of the opening degree of the airflow rate adjusting valve is performed by manually operating a knob mechanically coupled to the airflow rate adjusting valve while visually observing the state in the flow-rectifying chamber through an inspection window by an operator.

Patent document 1: japanese Kokai publication Hei-8-39002

The conventional purification apparatus described above still has room for improvement in operability and purification performance. For example, since the strength of the ascending air flow and the movement of the material on the screen vary depending on various operating conditions (for example, the particle diameter and flow rate of the material to be treated, the specification of the screen, the surrounding environment, and the like), the opening degree of the airflow rate adjustment valve by manual operation requires an operator's experience and intuitive and detailed adjustment. Therefore, the purification accuracy and the milling yield vary greatly between skilled operators and inexperienced operators. Further, it is also very troublesome for a skilled operator to perform fine adjustment according to the operating conditions. Thus, improvement in operability or purification performance of the purification apparatus is required.

Disclosure of Invention

The present invention has been made to solve at least part of the above problems, and can be realized, for example, as follows.

According to a first aspect of the present invention, there is provided a purification apparatus. The purification device is provided with: a screening unit configured to have a screen and to screen the object while conveying the object to be processed on the screen in a predetermined direction; a plurality of rectifying chambers which are communicated with the interior of the sieving part, are arranged above the sieving part and are divided in a manner of being arranged along a specified direction; a plurality of airflow rate adjustment valves provided in the plurality of rectifying chambers, respectively, and configured to adjust an airflow rate of air that flows upward through the screen in the corresponding rectifying chamber; a plurality of motors configured to drive the plurality of airflow rate adjustment valves, respectively, to control opening degrees of the plurality of airflow rate adjustment valves; and a control device configured to control the plurality of motors.

According to this purification device, the opening degrees of the plurality of air volume adjusting valves can be adjusted by controlling the plurality of motors by the control device. This increases the degree of freedom in designing the purification device, as compared with the conventional technique in which the opening degree of the airflow rate adjustment valve is adjusted by manually operating the knob. As a result, various modes as exemplified below can be realized, and the operability and purification performance of the purification apparatus can be improved.

According to a second aspect of the present invention, in addition to the first aspect, the purification apparatus includes an inspection window that enables visual confirmation of the inside of each of the plurality of rectification chambers. The control device includes a plurality of user interfaces provided in the vicinity of the inspection window in an arrangement corresponding to each of the plurality of airflow rate adjustment valves, and is configured to be capable of changing the opening degrees of the corresponding airflow rate adjustment valves. According to this aspect, as in the conventional art, the opening degrees of the plurality of airflow rate adjusting valves can be adjusted by the operator operating the plurality of user interfaces while visually checking the interiors of the plurality of rectifying chambers through the inspection window. Further, since the plurality of user interfaces are provided in an arrangement corresponding to the plurality of airflow rate adjustment valves, the operator can intuitively and easily grasp which airflow rate adjustment valve is being adjusted in terms of its opening degree.

According to a third aspect of the present invention, in addition to the second aspect, the control device includes a plurality of individual control devices configured to control the plurality of motors, respectively. The individual control devices are each provided with a plurality of user interfaces. According to this aspect, the wiring layout can be simplified as compared with a case where a single control device is directly electrically connected to each of the plurality of user interfaces and is directly electrically connected to each of the plurality of motors.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the control device includes an operation panel configured to be capable of controlling each of the plurality of motors to operate respective opening degrees of the plurality of airflow rate adjustment valves. According to this aspect, the operator can collectively operate the plurality of motors without being positioned in front of the plurality of rectification chambers.

According to a fifth aspect of the present invention, in addition to any one of the first to fourth aspects, the control device is configured to be operable in the first operation mode. The control device is configured to: in the first operation mode, factor information relating to a factor that affects purification accuracy and first correspondence information that associates opening degree information indicating the opening degrees of the plurality of air volume control valves are acquired, information corresponding to the factor information is acquired as an operation condition for a new operation when a new operation of the purification apparatus is performed, and the opening degrees of the plurality of air volume control valves in the new operation are determined based on the first correspondence information and the acquired information corresponding to the factor information. According to this aspect, if the first correspondence relationship is set in advance as the preferable correspondence relationship between the factor information as the operation condition and the respective opening degrees of the plurality of air volume adjusting valves, when a new operation of the purification apparatus is performed, the respective opening degrees of the plurality of air volume adjusting valves suitable for the operation condition of the new operation can be automatically determined based on the first correspondence relationship. Therefore, a skilled operator is not required to operate the purification apparatus. The information corresponding to the factor information may be input to the control device by an operator or may be acquired by a sensor of the purification device. The first correspondence information may be acquired by reading from a storage device of the control device or by acquiring from another device by communication. The first correspondence may also be determined experimentally at the manufacturing stage of the purification apparatus.

According to a sixth aspect of the present invention, in addition to the fifth aspect including at least the second aspect, the control device is configured to: when a new operation of the purification apparatus is performed by an operation using the user interface, the first correspondence information can be updated based on a combination of information corresponding to the factor information acquired in the new operation and a history of the respective opening degrees of the plurality of air volume control valves in the new operation. According to this aspect, the history of the respective opening degrees of the plurality of air volume adjusting valves when a skilled operator manually adjusts the opening degrees of the plurality of air volume adjusting valves using the user interface can be reflected in the first correspondence information as the preferred opening degree when the information corresponding to the factor information acquired in the new operation becomes the operation condition. For example, the combination described above may be rewritten as the first correspondence information regarding the corresponding factor information, or may be added as one of the options that can be used as the first correspondence information.

According to a seventh aspect of the present invention, in addition to any one of the first to sixth aspects, the control device is configured to output operation history information of the purifying device including the respective opening degrees of the plurality of air volume adjusting valves. The destination of the output of the operation history information may be a storage medium, a communication interface, or a printing apparatus. The operation history information may include factor information during operation, and may include operator identification information input by an operator to the control device. According to this aspect, the operation history information is outputted and the contents thereof are examined, whereby the operation of the purifying apparatus in the future can be effectively used. For example, the respective opening degrees of the plurality of air volume adjusting valves for improving the pulverizing yield can be studied based on the relationship between the pulverizing yield and the operation history information obtained separately. In the case where the seventh aspect is combined with the fifth or sixth aspect, the first correspondence information can also be corrected based on a relationship between the separately obtained powder making yield and the operation history information.

According to an eighth aspect of the present invention, in addition to any one of the first to seventh aspects, a plurality of static pressure sensors provided in the plurality of rectifying chambers, respectively, are provided. The plurality of static pressure sensors are configured to detect static pressures in the corresponding rectifying chambers, respectively. Since the static pressure is related to the air volume, according to this aspect, the degree of air flow in the plurality of rectification chambers can be grasped based on the detection result of the static pressure. Therefore, the respective opening degrees of the plurality of air volume adjusting valves can be adjusted more finely, and as a result, the purification performance can be improved.

According to a ninth aspect of the present invention, in addition to the eighth aspect, the control device is configured to be able to display the detection results of the plurality of static pressure sensors in real time. According to this aspect, the operator can estimate the air flow rates in the plurality of rectification chambers by checking the detection result of the static pressure sensor. In the case where the ninth aspect is combined with the second or fourth aspect, the operator can manually adjust the respective opening degrees of the plurality of air volume control valves while referring to the detection result of the static pressure sensor. The display may be performed on the user interface of the second mode, for example, or may be performed on the screen of the operation panel of the fourth mode instead of or in addition to the user interface of the second mode.

According to a tenth aspect of the present invention, in addition to the eighth or ninth aspect, the control device is configured to: the operation in the second operation mode can be automatically controlled based on the detection results of the plurality of static pressure sensors and the target static pressure value set individually for each of the plurality of rectifying chambers. According to this aspect, since the respective air volumes of the plurality of rectifying chambers are automatically and appropriately controlled, it is not necessary to have a skilled operator for operating the purification apparatus. Further, even if the air volume changes in the plurality of rectification chambers due to changes in the properties of the object to be processed, uneven distribution of the object to be processed on the screen, increase or decrease in the supply amount of the object to be processed, or the like, the opening degree of the air volume adjustment valve can be adjusted so as to return the air volume to an appropriate range.

According to an eleventh aspect of the present invention, in addition to the tenth aspect, the control device is configured to: in the second operation mode, second correspondence information is acquired that associates factor information relating to a predetermined factor that affects purification accuracy with a target static pressure value, information corresponding to the factor information is acquired as an operation condition for a new operation when the purification apparatus is newly operated, and the target static pressure value in the new operation is determined based on the second correspondence information and the acquired information corresponding to the factor information. According to this aspect, if the second correspondence relationship is set in advance as the preferable correspondence relationship between the factor information as the operation condition and the target static pressure value, when a new operation of the purification apparatus is performed, the target static pressure value suitable for the operation condition of the new operation can be determined based on the second correspondence relationship. The information corresponding to the factor information may be input to the control device by an operator or may be acquired by a sensor of the purification device. The second correspondence information may be acquired by reading from a storage device of the control device or by acquiring from another device by communication. The second correspondence may also be determined experimentally at the manufacturing stage of the purification apparatus.

According to a twelfth aspect of the present invention, in addition to the eleventh aspect, the control device is configured to: when a new operation of the purification apparatus is performed by an operation using the user interface, the second correspondence information can be updated based on a combination of information corresponding to the factor information acquired in the new operation and the detection result of the static pressure sensor acquired in the new operation. According to this aspect, the history of the respective static pressure detection values of the plurality of rectification chambers when a skilled operator manually adjusts the opening degrees of the plurality of airflow rate adjustment valves using the user interface can be reflected in the second correspondence information as the preferred target static pressure value when the information corresponding to the factor information acquired in the new operation becomes the operation condition. For example, the combination described above may be rewritten as the second correspondence information regarding the corresponding factor information, or may be added as one of the options that can be used as the second correspondence information.

According to a thirteenth aspect of the present invention, in addition to the twelfth aspect, the second correspondence information is a prediction model having the factor information as an explanatory variable and the target static pressure value as a target variable. The control device is configured to update the prediction model by learning based on artificial intelligence. According to this aspect, the purification performance can be further improved. A combination of information corresponding to factor information acquired in relation to a new operation and a detection result of the static pressure sensor acquired in the new operation when a skilled operator manually adjusts the opening degrees of the plurality of airflow rate adjustment valves may be collected as learning data.

According to a fourteenth aspect of the present invention, in addition to any one of the eighth to thirteenth aspects, the control device is configured to output operation history information of the purification device including detection results of the plurality of static pressure sensors. According to this aspect, the same effects as those of the seventh aspect can be obtained. For example, a static pressure target value for improving the milling yield can be studied based on the relationship between the milling yield and the operation history information obtained separately.

Drawings

Fig. 1 is a perspective view of a purification apparatus according to a first embodiment of the present invention.

Fig. 2 is a front view of the purification apparatus.

Fig. 3 is a schematic diagram showing the internal structure of the purification apparatus.

Fig. 4 is a control block diagram of the purification apparatus.

Fig. 5 is a block diagram showing a schematic configuration of the individual control device and the operation panel.

Fig. 6 is a diagram showing an example of a user interface in which the opening degree of the airflow rate adjusting valve can be manually operated.

Detailed Description

Fig. 1 is a perspective view of a purification apparatus 10 according to an embodiment of the present invention. Fig. 2 is a front view of the purification apparatus 10. Fig. 3 is a schematic diagram showing the internal structure of the purification apparatus 10. Hereinafter, the purification apparatus 10 will be described as an apparatus used in a wheat milling process. However, the purification apparatus 10 may be used in a milling process of any other cereal (for example, buckwheat, soybean, adzuki bean, coffee bean, corn, etc.). As shown in fig. 1, the purification apparatus 10 is constituted of two series consisting of a series a and a series B. The A series and the B series have the same structure. The operation panel 200 among the components of the purification apparatus 10 described later is provided in common for the a-series and the B-series, but the components other than the operation panel 200 are provided separately for the a-series and the B-series.

As schematically shown in fig. 3, the purification apparatus 10 includes an inlet 15 for introducing the stock, a sieving section 40, and a plurality of rectifying chambers 20. The screening unit 40 communicates with the inlet 15, and the stock introduced into the inlet 15 is supplied to the screening unit 40. The screen unit 40 is provided with

screens

41, 42, and 43. The

screens

41, 42, and 43 are provided in a state inclined so as to be located more vertically downward as the

screens

41, 42, and 43 are farther from the inlet 15 in the longitudinal direction. In the present embodiment, the sieving unit 40 has a 3-layer structure in which the

sieves

41, 42, and 43 are arranged in the vertical direction, but may be composed of any number of layers of 1 layer or more. Depending on the required purification performance, the number of layers of the sieving unit 40 can be changed by removing a part of the

sieves

41, 42, and 43 or by adding more sieves.

As shown in fig. 3, the

screens

41, 42, 43 are configured to be capable of being vibrated in the front-rear direction (the longitudinal direction of the

screens

41, 42, 43) by the vibration generating device 44. By this vibration, the stock fed from the feed port 15 is conveyed on the

screens

41, 42, 43 in the longitudinal direction of the

screens

41, 42, 43 (more specifically, in the direction away from the feed port 15). With this configuration, the screening section 40 is configured to perform screening while conveying the stock material in the longitudinal direction on the

screens

41, 42, 43. The mesh size of each of the

screens

41, 42, 43 is set to be gradually larger toward the downstream in the stock conveyance direction. Specifically, the mesh 41 is configured by arranging a plurality of meshes in the longitudinal direction, and the mesh size of the plurality of meshes is smaller as the mesh is disposed on the downstream side. This is also the same for the

screens

42, 43.

As shown in fig. 1 and 3, a collection tank 51 and a collection tank 53 for collecting the roughage powder that has fallen down through the mesh of the mesh 41, the mesh of the mesh 42, and the mesh of the mesh 43 in this order are disposed below the sieving unit 40. The trap tank 51 has a discharge port 52 at its lower end, and the trap tank 53 has a discharge port 54 at its lower end. A plurality of points (installation points of the switching valves) in the longitudinal direction of the destination of the fall from the sieving unit 40 can be switched between the collection tank 51 and the collection tank 53 by a plurality of switching valves (not shown) disposed between the sieving unit 40 and the

collection tanks

51 and 53.

As shown in fig. 3, the downstream ends of the

screens

41, 42, 43 terminate in a discharge chute 55. A discharge port 56 is formed at a lower portion of the discharge groove 55. As shown in fig. 2 and 3, the discharge port 56 is divided into three so that the roughage that has not fallen from the meshes of the

screens

41, 42, 43 and has reached the downstream ends of the

screens

41, 42, 43 and has fallen can be discharged while being distinguished from each other.

As shown in fig. 3, a plurality of rectification chambers 20 are disposed above the sieving section 40. The number of the rectification chambers 20 can be arbitrarily set, and in fig. 3, an example in which 16 rectification chambers 20 are provided per one series is shown. The rectifying plates 21 divide the plurality of rectifying chambers 20 so as to be arranged in the longitudinal direction of the

screens

41, 42, 43. The plurality of rectification chambers 20 communicate with the interior of the screening section 40. A plurality of rectification chambers 20 are connected above it to one end of a main conduit 22. Although not shown, the interior of the main pipe 22 is divided into an a-system area and a B-system area. A suction fan (not shown) is connected to the other end of the main pipe 22. The suction fan is driven during the screening by the screening section 40. As a result, an air flow (hereinafter, also referred to as an updraft) is generated which flows upward through the meshes of the

screens

41, 42, and 43 from a position below the screening unit 40 and further flows upward through the plurality of rectifying chambers 20. The air flow is eventually drawn into the main duct 22.

As shown in fig. 3, the same number of airflow rate adjustment valves 30 (hereinafter also simply referred to as "valves 30") as the number of the rectification chambers 20 are provided in each of the rectification chambers 20. I.e. one valve 30 per one rectifying chamber 20. The valve 30 is configured to be capable of adjusting the opening degree of the valve 30 in order to adjust the flow rate of the ascending air flow in the corresponding rectification chamber 20. An air volume adjusting valve 31 (hereinafter also simply referred to as a valve 31) is provided in the main duct 22. The valve 31 is configured to be capable of adjusting the opening degree of the valve 31 in order to adjust the air volume in the main duct 22 and the air volume in the plurality of rectification chambers 20. The valves 31 are provided one in each of the area for the a system and the area for the B system in the main pipe 22.

In the above-described purification apparatus 10, the purification process of the stock is performed as follows. First, the vibration generating device 44 is driven, and the stock is charged into the charge port 15 while the air in the sieving unit 40 is sucked through the main duct 22. The stock fed into the inlet 15 is supplied onto the screen 41, and is conveyed toward the downstream side of the discharge chute 55 by the inclination of the screen 41 and the vibration generated by the vibration generator 44. At this time, the relatively heavy coarse flour passes through the meshes of the sieve 41 and falls onto the sieve 42. Since the meshes of the mesh net 41 are larger toward the downstream side, the coarse flour having a relatively small particle size passes through the meshes of the mesh net 41 earlier (i.e., on the more upstream side).

When the prepared material is conveyed on the screen 41, relatively light bran floats up by the ascending air flow, is sucked into the main duct 22 together with air, and is collected by a collecting device (not shown) such as a bag filter.

The masa flour falling on the screen 42 is conveyed downstream on the screen 42, and the masa flour having a relatively small particle size passes through the meshes of the screen 42 and falls on the screen 43. Similarly, the masa flour falling on the screen 43 is transported downstream on the screen 43, and the masa flour having a relatively small particle size passes through the meshes of the screen 43 and falls on the collection tank 51 or the collection tank 53. This traps the coarse flour having a relatively small particle size in the trap tank 51 and discharges it from the discharge port 52. The coarse flour having a relatively large particle size is collected in the collection tank 53 and discharged from the discharge port 54.

The large-diameter coarse powder that does not fall through the meshes of the

screens

41, 42, 43 is guided to the discharge groove 55 and discharged from the discharge port 56. At this time, the coarse flour reaching the end of the mesh 41, the coarse flour reaching the end of the mesh 42, and the coarse flour reaching the end of the mesh 43 are distinguished from each other. In this way, bran is removed from the stock and the coarse flour is classified according to its particle size.

In such a purification process of the purification apparatus 10, the amount of air of the ascending air passing through the screen 41 and the rectification chamber 20 greatly affects the purification performance. Therefore, in the present embodiment, the purifying apparatus 10 includes various configurations for appropriately controlling the air volume of the ascending air current passing through the mesh 41 and the rectifying chamber 20 by adjusting the opening degrees of the

valves

30 and 31. This structure will be explained below.

Fig. 4 is a control block diagram of the purification apparatus 10. In fig. 4, only the a-series structure is shown in detail, and the B-series structure is not shown, but the B-series structure is also the same as the a-series structure. As shown in fig. 4, the purification apparatus 10 includes the same number of motors 80 as the number of valves 30 disposed in the plurality of rectification chambers 20. That is, one motor 80 is provided for each valve 30. The motor 80 is configured to drive the corresponding valve 30 to control the opening degree of the valve 30. The purification apparatus 10 further includes motors 81 configured to drive the valves 31 and control the opening degrees of the valves 31 in the a-series and the B-series, respectively. In the present embodiment, the

motors

80 and 81 are servo motors. The opening degree of the

valves

30 and 31 can be controlled with high accuracy by the servo motor. However, the

motors

80, 81 may be any other type of motor, such as a stepping motor.

As shown in fig. 4, the purification apparatus 10 includes the same number of individual control devices 100 as the number of motors 80 and the same number of individual control devices 101 as the number of motors 81 (i.e., one for each series). The individual control devices 100 are electrically connected to the motors 80, respectively, and the individual control devices 100 control the corresponding motors 80, respectively. Similarly, the individual control device 101 is electrically connected to the motor 81 to control the motor 81.

As shown in fig. 4, the purification apparatus 10 includes the same number of static pressure sensors 90 as the number of the rectification chambers 20. That is, one static pressure sensor 90 is provided for each of the rectifying chambers 20. The static pressure sensors 90 are disposed in the corresponding rectifying chambers 20, respectively, and detect static pressures in the corresponding rectifying chambers 20. Each of the static pressure sensors 90 is electrically connected to a corresponding individual control device 100, and the detection result of the static pressure sensor 90 is output to the individual control device 100. The purification device 10 is also provided with a static pressure sensor 91 in the main conduit 22 one for each series. The static pressure sensor 91 is connected to the individual control device 101, and the detection result of the static pressure sensor 91 is output to the individual control device 101.

As shown in fig. 2 and 4, the purification apparatus 10 includes an operation panel 200 configured to operate and control the entire apparatus constituting the purification apparatus 10. As shown in fig. 2, the operation panel 200 is disposed on the upper portion of the front surface of the purification apparatus 10. As shown in fig. 4, the operation panel 200 is electrically connected to the plurality of

individual control devices

100 and 101. In the present embodiment, they are daisy-chained, and wiring is simplified. The communication method CAN be, for example, CAN (Controller Area Network) or serial communication (for example, RS 485). When the motors 80 are controlled individually, the operation panel 200 controls the motors 80 to be controlled by the individual control devices 100 corresponding to the motors 80 to be controlled. Also, the operation panel 200 controls the motor 81 by the individual control device 101.

As shown in fig. 1, the purification apparatus 10 includes an inspection window 60. The inspection window 60 is formed of a transparent member, and is disposed at a position where an operator can visually confirm the inside of the plurality of rectifying chambers 20 through the inspection window 60. For example, the operator can visually confirm whether the air flow in the rectifying chamber 20 is properly maintained and the bran is properly removed, the air flow is excessively large and the air flow is relatively small, the wheat flour which is already in powder form floats together with the bran and is sucked into the main duct 22 (which reduces the yield of milling), or the air flow is excessively small and the bran is not floating (which reduces the purification accuracy). Alternatively, the operator can visually confirm the opening degree of the valve 30.

As shown in fig. 1, the user interfaces 130 are disposed in the vicinity of the inspection window 60 in the same number as the valves 30 (in other words, in the same number as the rectifying chambers 20). That is, one user interface 130 is provided for each valve 30. The user interface 130 is a component of the individual control device 100, and is configured to be capable of changing the opening degree of the corresponding valve 30. The operator can easily adjust the opening degrees of the plurality of valves 30 by operating the user interface 130 while checking the state in the rectifying chamber 20 through the inspection window 60.

Since the individual control device 100 including the user interface 130 is connected to the motor 80 via a cable, the user interface 130 can be disposed at a position separated from the motor 80. In other words, the user interface 130 can be disposed at any position. With this advantage, in the present embodiment, the user interfaces 130 are disposed adjacent to the inspection window 60 at a position lower than the inspection window 60. Therefore, the arm of the operator who operates the user interface 130 is positioned below the inspection window 60, and does not obstruct the operator's view of the inspection window 60. Therefore, the inspection window 60 and hence the inside of the rectifying chamber 20 can be easily observed.

The plurality of user interfaces 130 are also provided in a configuration that establishes correspondence with the plurality of valves 30, respectively. Specifically, the user interfaces 130 are arranged in the longitudinal direction (in other words, the feed direction of the stock) in the same manner as the valves 30, and the user interfaces 130 are arranged at the same longitudinal positions as the corresponding valves 30. Therefore, the operator can intuitively and easily grasp which valve 30 is being adjusted in opening degree.

Fig. 6 is a diagram showing an example of the user interface 130. The user interface 130 is provided with a close button 131 and an open button 132. When the operator presses the close button 131, the corresponding valve 30 is operated in the closing direction, and when the open button 132 is pressed, the corresponding valve 30 is operated in the opening direction. The valve 30 changes the opening degree in a stepwise manner or arbitrarily depending on the pressing time or the number of times of the off button 131 or the on button 132.

In the present embodiment, the user interface 130 also has a function of displaying the opening degree of the corresponding valve 30. In the example shown in fig. 6, the opening degree of the corresponding valve 30 can be displayed by the opening degree indicator 133. The opening indicator 133 is in the form of 11 LEDs, and is displayed in 10% scale from an opening of 0% indicating "off" to an opening of 100% indicating "on". More specifically, the opening indicator 133 is configured to turn on only the LED corresponding to the opening degree of the corresponding valve 30 indicated by the off button 131 or the on button 132. Fig. 6 shows a state in which the LED corresponding to the opening degree of 30% is turned on. According to such an opening display function, the operator can adjust the air volume in the plurality of rectification chambers 20 while displaying the reference opening, and thus the convenience is improved.

In the present embodiment, the user interface 130 also has a static pressure display function of displaying in real time the detection results of the corresponding static pressure sensors 90 (i.e., the static pressure sensors 90 disposed in the rectifying chambers 20 in which the corresponding valves 30 are disposed). In the example shown in fig. 6, the detected value of the corresponding static pressure sensor 90 is indicated numerically by the static pressure indicator 134. Since the air volume in the rectifying chamber 20 is related to the static pressure in the rectifying chamber 20, the operator can grasp the degree of the air flow in the corresponding rectifying chamber 20 based on the detection result of the static pressure sensor 90 by the static pressure display function. Therefore, the operator can visually confirm the state in the rectifying chamber 20 through the inspection window 60, and can more finely adjust the opening degree of the valve 30 by operating the close button 131 and the open button 132 while quantitatively grasping the degree of the air flow based on the detection result of the static pressure sensor 90.

As shown in fig. 2, the user interfaces 135 having the same number as the valves 31 (i.e., two for the a system and the B system) are arranged near the operation panel 200. The user interface 135 is configured to be capable of changing the opening degree of the corresponding valve 31. The user interface 135 has the same structure as the user interface 130. The user interface 135 for the a system has an operation function and an opening display function for the valve 31 disposed in the a system area of the main pipe 22, and a static pressure display function for the static pressure sensor 91 disposed in the a system area. Similarly, the user interface 135 for the B system has the same functions as those of the valve 31 and the static pressure sensor 91 disposed in the B system region. In addition, the two user interfaces 135 are provided in a configuration that establishes correspondence with the two valves 31, respectively. That is, the user interface 135 for the a system is disposed on the a system side, and the user interface 135 for the B system is disposed on the B system side.

Fig. 5 is a block diagram showing a schematic configuration of a plurality of individual control devices 100 and an operation panel 200. As shown in fig. 5, the individual control apparatus 100 has a controller 110, a memory 120, and the user interface 130 described above. Upon receiving an opening setting command (command for setting a predetermined opening) for the valve 30 from the user interface 130 at the start of operation or during operation of the purification apparatus 10, the controller 110 sends a control signal to the motor 80 to adjust the opening of the valve 30 in accordance with the opening setting command.

The controller 110 stores the thus set opening degree of the valve 30 in the memory 120 as operation history information of the purifying apparatus 10. The opening of the valve 30 may be obtained from the user interface 130 or from the motor 80. Further, the controller 110 receives a static pressure detection value from the static pressure sensor 90 during the operation of the purification apparatus 10, and stores the static pressure detection value in the memory 120 as operation history information of the purification apparatus 10. In the present embodiment, the opening degree and the static pressure detection value stored in the memory 120 are stored as time series data. However, the statistical value (for example, an average value or the like) may be stored in a simplified manner.

The controller 110 includes an overcurrent monitoring circuit, and when an overcurrent is detected, sends a predetermined signal to the operation panel 200. Therefore, when the opening degree of the valve 30 does not become the opening degree corresponding to the opening degree setting command due to the sticking of the stock or the like, the opening degree setting command can be reported to the operation panel 200.

Although not shown, the individual control device 101 also has the same configuration and function as the individual control device 100 described above.

The operation panel 200 includes a controller 210, a memory 220, an operation/display unit 230, an external storage device 240, and a communication interface 250. The operation/display unit 230 is in the form of a touch panel screen in the present embodiment. The operation/display unit 230 is configured to be able to display a user interface for setting the respective opening degrees of the

valves

30 and 31.

When the operator inputs the opening setting commands for the respective valves 30 via the operation and display unit 230, the controller 210 sends the opening setting commands to the corresponding individual control devices 100. The individual control device 100 that receives the opening setting command controls the corresponding motor 80 to adjust the opening of the corresponding valve 30 in accordance with the opening setting command. In this way, the operation panel 200 is configured to be able to control the motor 80 via the individual control device 100 to operate the valves 30, respectively. Similarly, the control panel 200 is configured to control the motor 81 via the individual control device 101 to operate the valves 31, respectively. That is, the operator may operate the

valves

30 and 31 individually by the

individual control devices

100 and 101, or may operate the

valves

30 and 31 collectively by the operation panel 200. When communication between the control panel 200 and an external device (for example, a central control panel) is established via the communication interface 250, the

motors

80 and 81 can be controlled from the external device via the control panel 200.

The operation/display unit 230 further has an opening display function of collectively displaying the respective openings of the

valves

30 and 31, and a static pressure display function of collectively displaying the detection results of the

static pressure sensors

90 and 91 in real time. Therefore, the operator can grasp all the opening degrees of the

valves

30 and 31 disposed in the rectification chamber 20 or the main pipe 22 and all the degrees of air flows in the plurality of rectification chambers 20 and the main pipe 22. Therefore, the operator can easily grasp whether or not there is an inappropriate opening or air volume. Therefore, the operator can operate the motor 80 appropriately even if the operator is not in front of the valve 30 (in other words, in front of the user interface 130).

The controller 210 is also configured to be able to acquire operation history information (that is, a history of the opening degree of the corresponding valve 30 and a history of the static pressure detection value of the corresponding static pressure sensor 90) stored in the memory 120 from each of the plurality of individual control devices 100 and store the acquired information in the memory 220. Similarly, the controller 210 is configured to be able to acquire the operation history information (that is, the history of the opening degree of the corresponding valve 31 and the history of the static pressure detection value of the corresponding static pressure sensor 91) stored in the memory from each of the two individual control devices 101 and store the acquired information in the memory 220. These pieces of operation history information are stored in association with identification information of the

valves

30 and 31.

The controller 210 can output the operation history information stored in the memory 220 to various output destinations in accordance with a predetermined operation on the operation/display unit 230. For example, the controller 210 may output the operation history information to the operation/display unit 230. That is, the controller 210 may display the operation history information on the screen. Alternatively, the controller 210 may output the operation history information to the external storage device 240. The external storage device 240 can be any removable storage medium (for example, a USB memory, an SD card, or the like). Alternatively, the controller 210 may output the operation history information to the communication interface 250. That is, the controller 210 may transmit the operation history information to another device (e.g., a central control panel, a personal computer, a printing device, etc.) via the communication interface 250. With these configurations, the operation history information is outputted and the contents thereof are examined, whereby the purification apparatus 10 can be effectively used for future operations. For example, based on the relationship between the pulverizing yield (which is calculated separately) of the purifying apparatus 10 in operation and the operation history information, which has obtained the operation history information, the respective opening degrees of the

valves

30 and 31 for improving the pulverizing yield, or the static pressure values in the rectifying chamber 20 and the main pipe 22 can be studied.

The operation/display unit 230 may be configured to: when the operator manually operates the

valves

30 and 31 using the

user interfaces

130 and 135, the operator receives input of identification information (for example, a name or an identification number assigned to each operator) before, during, or after the start of operation. In this case, the controller 210 may store the identification information of the operator in the memory 120 as a part of the operation history information. That is, the memory 120 may store a history of the opening degrees of the

valves

30 and 31 and a history of the static pressure detection values of the

static pressure sensors

90 and 91 in a corresponding relationship with an operator who is operating and who has obtained the history. In this way, convenience is improved when the operation history information is output to investigate the contents thereof.

The controller 210 may store the factor information related to the operation thereof in the memory 120 as a part of the operation history information. That is, the memory 120 may store the history of the opening degrees of the

valves

30 and 31 and the history of the static pressure detection values of the

static pressure sensors

90 and 91 in association with factor information on the operation in which the history is obtained. The factor information is information related to factors that affect the purification accuracy.

The factor information may include the type of the object to be processed. The type of the object to be processed may include at least one of information relating to a difference in material type and information relating to a difference in source process. The difference in the material variety means, for example, the difference between hard wheat and soft wheat. The difference in the supply source process means, for example, a difference in the number of brake stages in the previous process of the purification apparatus. The factor information may include at least one of the property and the flow rate of the object to be treated. The properties of the treatment object may include at least one of water content and particle size range.

The factor information may include the characteristic amount of the mesh of the sieving unit 40. The characteristic amount of the mesh may include the size of the mesh (which may include at least one of a change pattern of the size of the mesh in the flow direction of the object to be processed and a combination of the size of the mesh in the vertical direction in the case of 2 layers or more). The characteristic amount of the mesh may include at least one of the vibration frequency, the amplitude, and the inclination angle of the mesh. Also, the factor information may include a required product quality. The factor information may include the ambient environment at the time of processing. The ambient environment may also include at least one of ambient temperature and humidity.

Such factor information may be input by the operator via the operation/display unit 230. The input may be performed such that the operation/display unit 230 displays a plurality of options on the screen and accepts selection of any one of the options. Alternatively, the factor information may be automatically acquired by a sensor provided in the purification apparatus 10. For example, in the case where the factor environment includes the ambient temperature and humidity, the ambient temperature and humidity may also be automatically acquired by the temperature sensor and the humidity sensor.

Such factor information can be understood as an operating condition that affects the purification performance. Since the respective preferred opening degrees of the

valves

30 and 31 or the preferred static pressure values in the rectifying chamber 20 and the main pipe 22 are changed in accordance with such an operation condition, if factor information is included in the outputted operation history information, it is possible to easily perform a study in accordance with the operation condition.

When an abnormality is detected by either of the

individual control devices

100 and 101, the controller 210 receives a signal indicating the abnormality from the

individual control device

100 or 101 and reports the abnormality to the operator. The reported anomaly may be, for example, an overload of either of the

motors

80, 81. Alternatively, the reported abnormality may be a case where the detected value of at least one of the

static pressure sensors

90 and 91 is not within a predetermined range. The report can be made in various forms such as display on the screen of the operation/display unit 230, a warning sound, and lighting of a lamp. According to such a configuration, when a phenomenon occurs in which the air volume of any one of the plurality of rectifying chambers 20 deviates from the appropriate range, the operator can notice the occurrence of the phenomenon and quickly eliminate the cause thereof.

The purification apparatus 10 is configured to: the operation can be automated in addition to manual operation using the

user interfaces

130 and 135 or the operation/display unit 230. The automatic operation of the purification apparatus 10 will be described below. The purification apparatus 10 is configured to be automatically operable in the first operation mode or the second operation mode.

The first operation mode is a mode in which the respective opening degrees of the

valves

30 and 31 are determined in accordance with given operation conditions. In the first operation mode, the opening degrees of the

valves

30 and 31 are determined based on the first correspondence information 221 (see fig. 5) stored in the memory 220 of the operation panel 200. In the alternative, the first correspondence information 221 may also be acquired from other devices via the communication interface 250.

The first correspondence information 221 is information in which the factor information described above is associated with opening degree information indicating the opening degree of each of the

valves

30 and 31. The factor information here may be at least one or any combination of the above-described various embodiments. The opening degree information indicates a preferable opening degree of each of the

valves

30 and 31 when operating under the operating condition given factor information associated therewith as the operating condition. The preferred opening degree set for each of the

valves

30 and 31 may be set to a constant value or may be set to time series data that changes with the passage of time. The first correspondence information 221 may be determined by an experiment at the manufacturing stage of the purification apparatus 10, for example.

The first correspondence information 221 is typically a reference table in which the content of the factor information is stored in correspondence with the opening degree information. The reference table includes a plurality of combined unit data. The combination unit data is data to which the opening degree information is assigned to one of a plurality of specific contents of the factor information (in the case where there are a plurality of factor information, a combination of the specific contents of each factor information). For example, when there are two types of factor information, the specific content of one type of factor information a is a1 or a2, and the specific content of the other type of factor information B is B1 or B2, four combination unit data corresponding to the opening degree information are prepared for each of the four combinations of the specific contents of the factor information, such as (factor information a = a1, factor information B = B1, opening degree information C = C1), (factor information a = a2, factor information B = B1, opening degree information C = C2), (factor information a = a1, factor information B = B2, opening degree information C = C3), and (factor information a = a2, factor information B = B2, and opening degree information C = C4). However, the first correspondence information 221 is not limited to the reference table, and can be implemented in any manner. For example, the first correspondence information 221 may be a function having the content of the factor information as an independent variable.

When the purifying apparatus 10 is operated in the first operation mode, the controller 210 of the control panel 200 first acquires operation conditions regarding an operation performed thereafter (hereinafter, also referred to as a new operation). The operating condition acquired here is information corresponding to factor information. For example, when the factor information constituting the first correspondence information 221 is constituted by the type and property of the object to be processed, the type and property of the object to be processed in the new operation are acquired.

The acquisition of the operating conditions may be performed by receiving the operating conditions input by the operator operating the operation/display unit 230 of the operation panel 200. In this case, the operation/display unit 230 may display a plurality of options for each operating condition and receive a selection of any one of the options. If the operating conditions can be acquired from the sensors provided in the purification apparatus 10, the operating conditions may be automatically acquired from the sensors. Alternatively, the operating conditions may be obtained from other devices via the communication interface 250.

Next, the controller 210 determines the respective opening degrees of the

valves

30 and 31 in the new operation based on the acquired operation conditions and the first correspondence information 221. For example, when the first correspondence information 221 is the reference table, the controller 210 determines the respective opening degrees of the

valves

30 and 31 associated with the factor information that matches the acquired operation condition as the respective opening degrees of the

valves

30 and 31 in the new operation with reference to the first correspondence information 221. Further, the controller 210 controls the

motors

80 and 81 via the

individual control devices

100 and 101 to adjust the respective opening degrees of the

valves

30 and 31 to the determined opening degrees. According to the first operation mode, the respective opening degrees of the

valves

30 and 31 suitable for the operation conditions are automatically determined, and the automatic operation of the purification apparatus 10 can be performed. Therefore, the air volume of the plurality of rectifying chambers 20 can be appropriately adjusted without depending on the skill of the operator. As a result, the purification accuracy and the yield of the milled powder can be stabilized.

The controller 210 may be configured to: in the operation in the first operation mode, when an operation command for any one of the

valves

30 and 31 via the

user interface

130 or 135 or the operation/display unit 230 is received, the opening degree of the corresponding valve is changed based on the operation command. With this configuration, the operator can correct the valve opening degree as necessary while checking the state in the rectifying chamber 20 through the inspection window 60. Further, the operation of the purification apparatus 10 may be started from a state in which the respective opening degrees of the

valves

30 and 31 are substantially appropriately set in the first operation mode, and thereafter, fine adjustment by manual operation may be performed. In this case, the time required for opening adjustment by manual operation can be shortened as compared with the case where the opening adjustment of the

valves

30 and 31 is performed by manual operation from the beginning.

In the case where a new operation of the purification apparatus 10 is performed by an operation using the

user interface

130 or 135, instead of or in addition to the mode in which the first correspondence information 221 is set in advance by an experiment, the first correspondence information 221 may be updated based on a combination of the acquired operation condition (i.e., information of the factor information corresponding to the first correspondence information 221) and the history of the respective opening degrees of the

valves

30 and 31 in the new operation. The command regarding the update availability may be received via the operation/display unit 230. According to this configuration, the history of the opening degree when the skilled operator performs the opening degree adjustment by the manual operation using the

user interface

130 or 135 is recorded in advance, and then, when a new operation is to be performed under the same or similar operation conditions, the opening degree adjustment by the skilled operator can be easily reproduced.

For example, in the case where the first correspondence information 221 is a reference table, the combination unit data in which the factor information having the same content as the acquired operation condition and the opening degree information corresponding to the factor information are associated with each other, among the first correspondence information 221 stored in the memory 220 in advance, may be rewritten so as to be replaced with the combination. That is, the history of the respective opening degrees of the

valves

30 and 31 may be new opening degree information associated with factor information having the same content as the acquired operation conditions.

Alternatively, the combination unit data in which the acquired operation conditions are used as the factor information and the histories of the respective opening degrees of the

valves

30 and 31 are used as the opening degree information may be added to the first correspondence information 221 as one of the options selectable by the operation/display unit 230.

According to the first operation mode described above, the opening degrees of the

valves

30 and 31 can be adjusted to appropriate opening degrees (specifically, appropriate opening degrees set experimentally or opening degrees that can be set by a skilled operator) simply by performing a simple operation such as inputting an operation condition to the operation/display unit 230 or selecting an operation condition on the screen of the operation/display unit 230.

The second operation mode is a mode in which target static pressure values of the plurality of rectifying chambers 20 and the main pipe 22 are determined in accordance with given operation conditions, and the respective opening degrees of the

valves

30 and 31 are controlled based on the target static pressure values and the detection results of the

static pressure sensors

90 and 91. In the second operation mode, the target static pressure values of the plurality of rectifying chambers 20 and the main pipe 22 are determined based on the second correspondence information 222 (see fig. 5) stored in the memory 220 of the operation panel 200. In the alternative, the second corresponding information 222 may also be obtained from other devices via the communication interface 250.

The second correspondence information 222 is information for correlating the above-described factor information with the respective target static pressure values of the plurality of rectifying chambers 20 and the main pipe 22. The factor information here may be at least one or any combination of the above-described various embodiments. The target static pressure value indicates a preferred static pressure value for each of the plurality of rectifying chambers 20 and the main pipe 22 during operation under the operating condition when the factor information associated therewith is given as the operating condition. As described above, since the static pressure is related to the air volume, a preferred static pressure value can be understood as a preferred air volume. The target static pressure value may be set to be constant or may be set to be time series data that changes with the passage of time.

The second correspondence information 222 is a prediction model in the present embodiment that takes factor information as explanatory variables and a target static pressure value with respect to each of the plurality of rectifying chambers 20 and the main pipe 22 as a target variable. The second correspondence information 222 can be created by, for example, multiple regression analysis. The second correspondence information 222 may also be determined experimentally at the manufacturing stage of the purification apparatus 10.

In the case where the purification apparatus 10 is operated in the second operation mode, the controller 210 of the operation panel 200 first acquires the operation conditions for a new operation. The operation conditions obtained here are information corresponding to factor information, as in the first operation mode. The acquisition of the operating conditions can be performed in the same manner as in the first operating mode. Next, the controller 210 determines a target static pressure value for each of the plurality of rectifying chambers 20 and the main pipe 22 in the new operation based on the acquired operating conditions and the second correspondence information 222. That is, the controller 210 applies the acquired operating conditions to the prediction model to determine the target static pressure value.

The controller 210 controls the

motors

80 and 81 via the

individual control devices

100 and 101 based on the detection results of the

static pressure sensors

90 and 91 and the determined target static pressure values, and adjusts the respective opening degrees of the

valves

30 and 31. As this process, the controller 210 may perform feedback control on the

motors

80 and 81 so that the detection results of the

static pressure sensors

90 and 91 approach the target static pressure values, for example. Alternatively, the controller 210 may control the

motors

80 and 81 so that the detection results of the

static pressure sensors

90 and 91 fall within a predetermined range with respect to the target static pressure value.

According to the second operation mode, it is possible to automatically determine a target static pressure value for each of the plurality of rectifying chambers 20 and the main pipe 22, and to automatically operate the purifying apparatus 10 based on the target static pressure value. Therefore, the air volume of the plurality of rectifying chambers 20 can be appropriately adjusted without depending on the skill of the operator. Further, even if the air flow rates in the plurality of rectifying chambers 20 and the main pipe 22 vary due to a property change of the stocks, a distribution unevenness of the stocks on the

screens

41, 42, 43, an increase or decrease of the supply amount of the stocks, or the like during the operation of the purifying apparatus 10, the opening degrees of the

valves

30, 31 can be adjusted so as to return the air flow rates to appropriate ranges.

The controller 210 may update the second correspondence information 222 based on a combination of the operating conditions (i.e., information of the factor information corresponding to the second correspondence information 222) when the purification apparatus 10 is newly operated by the operation using the

user interfaces

130 and 135 and the detection results of the

static pressure sensors

90 and 91 during the new operation.

For example, the controller 210 may be configured to update the second correspondence information 222 (i.e., the prediction model) by learning based on artificial intelligence. More specifically, the learning data may be collected as a combination of the operating conditions (i.e., information corresponding to the factor information) under the new operation when the skilled operator adjusts the opening degrees of the

valves

30 and 31 by manual operation using the

user interfaces

130 and 135 during the new operation, and the detection result of the static pressure sensor 90 acquired during the new operation. A command to determine whether or not to collect learning data during a new operation can be received via the operation/display unit 230.

The controller 210 may receive at least one of the actual measurement value of the purification accuracy and the actual measurement value of the milling yield for the operation completed through the operation/display unit 230. In this case, the controller 210 may store the operation history information on the completed operation in the memory 120 in association with at least one of the received measured values, learn the target static pressure value most rewarded for the given operation condition (i.e., information corresponding to the factor information) by using the received measured value of the purification accuracy or the measured value of the milling yield as a reward. By using such artificial intelligence control, the purification performance can be further improved.

As in the first operation mode, the controller 210 may be configured to: in the automatic operation in the second operation mode, when an operation command for any one of the

valves

30 and 31 via the

user interfaces

130 and 135 or the operation/display unit 230 is received, the opening degree of the corresponding valve is changed based on the operation command.

In an alternative embodiment, each of the

user interfaces

130 and 135 may have a button that can switch between the automatic operation in the second operation mode and the manual operation in which the off button 131 and the on button 132 are operated. In this way, the operator can basically check the state in the rectifying chamber 20 through the inspection window 60 while adjusting the opening degrees of the

valves

30 and 31 by the automatic operation, and can correct the opening degree by the manual operation only for the valve that is necessary among the

valves

30 and 31. According to this configuration, the operation load of the operator is reduced.

In another alternative embodiment, the second correspondence information 222 may be a reference table such as the first correspondence information 221. In this case, the second correspondence information 222 may be updated based on a combination of the operation conditions (i.e., information of the factor information corresponding to the second correspondence information 222) when a new operation of the purification apparatus 10 is performed by the operation using the

user interfaces

130 and 135 and the detection results of the

static pressure sensors

90 and 91 during the new operation. The update may be performed in a manner similar to the first correspondence information 221, such that the unit data is rewritten in combination, or such that an option to be selected can be added by the operation/display unit 230.

The embodiments of the present invention have been described above, but the above embodiments are not intended to limit the present invention, since the understanding of the present invention is facilitated. The present invention can be modified and improved without departing from the gist thereof, and the present invention includes equivalents thereof. In addition, any combination or omission of the respective constituent elements described in the claims and the description may be made within a range in which at least a part of the above-described problems can be solved or within a range in which at least a part of the effects can be obtained.

For example, the

individual control devices

100 and 101 may be omitted. In this case, the configuration may be such that: the

user interfaces

130, 135 are directly connected to the operation panel 200, and the operation panel 200 directly controls the

motors

80, 81. Alternatively, only the motor 80 of the

motors

80 and 81 may be controlled in the first mode or the second mode.

Description of the reference numerals

A purification device; throwing in an inlet; a rectification chamber; a rectifying plate; a main conduit; an air volume regulating valve for the rectifying chamber; an air volume adjusting valve for a main pipeline; sieving; 41. 42, 43.. Screen mesh; a vibration generating device; 51. 53.. 52. An exhaust port; a discharge chute; 56.. An exhaust port; an inspection window; 80. a motor; 90. a static pressure sensor; 100. a separate control device; a controller; a memory; a user interface; a close button; open button; an opening indicator; a static pressure indicator; a user interface; 200.. An operating panel; a controller; a memory; first correspondence information; second corresponding information; an operation/display unit; an external storage device; a communications interface.

Claims

1. A purification device is characterized in that the device comprises a purification device,

the purification device is provided with:

a screening unit configured to have a screen and to screen a processing object while conveying the processing object on the screen in a predetermined direction;

a plurality of rectifying chambers which are communicated with the inside of the sieving unit, are arranged above the sieving unit, and are divided so as to be arranged in the predetermined direction;

a plurality of airflow rate adjustment valves provided in the plurality of rectifying chambers, respectively, and configured to adjust an airflow rate of air that flows upward through the screens in the corresponding rectifying chambers;

a plurality of motors configured to drive the plurality of airflow rate adjustment valves, respectively, to control the opening degrees of the plurality of airflow rate adjustment valves; and

and a control device configured to control the plurality of motors.

2. The purification apparatus of claim 1,

an inspection window capable of visually confirming the inside of each of the plurality of rectifying chambers,

the control device includes a plurality of user interfaces provided in the vicinity of the inspection window in an arrangement corresponding to each of the plurality of airflow rate adjustment valves, and configured to be capable of changing the opening degrees of the corresponding airflow rate adjustment valves.

3. The purification apparatus of claim 2,

the control device includes a plurality of individual control devices configured to control the plurality of motors respectively,

the plurality of individual control devices are respectively provided with the plurality of user interfaces.

4. The purification apparatus according to any one of claims 1 to 3,

the control device includes an operation panel configured to control each of the plurality of motors to operate the opening degrees of the plurality of air volume adjustment valves.

5. The purification apparatus according to any one of claims 1 to 4,

the control device is configured to be operable in a first operating mode,

the control device is configured to: in the first mode of operation, in the second mode of operation,

acquiring first correspondence information that associates factor information relating to a factor that affects purification accuracy with opening degree information indicating the opening degree of each of the plurality of air volume control valves,

acquiring information corresponding to the factor information as an operation condition of a new operation when the purification apparatus is operated newly,

the opening degrees of the plurality of air volume adjusting valves in the new operation are determined based on the first correspondence information and the acquired information corresponding to the factor information.

6. Purification device according to claim 5, when dependent on at least claim 2,

the control device is configured to: when the new operation of the purification apparatus is performed by an operation using the user interface, the first correspondence information can be updated based on a combination of the information corresponding to the factor information acquired for the new operation and the history of the opening degrees of the plurality of air volume control valves in the new operation.

7. The purification apparatus according to any one of claims 1 to 6,

the control device is configured to output operation history information of the purification device including the opening degrees of the plurality of air volume adjustment valves.

8. The purification apparatus according to any one of claims 1 to 7,

a plurality of static pressure sensors respectively arranged in the plurality of rectifying chambers,

the plurality of static pressure sensors are configured to detect static pressures in the corresponding rectifying chambers, respectively.

9. The purification apparatus of claim 8,

the control device is configured to be able to display the detection results of the plurality of static pressure sensors in real time.

10. The purification apparatus according to claim 8 or 9,

the control device is configured to: the operation in the second operation mode is capable of automatically controlling the operations of the motors based on the detection results of the static pressure sensors and target static pressure values individually set for the respective rectifying chambers.

11. The purification apparatus of claim 10,

the control device is configured to: in the second mode of operation, in the first mode of operation,

acquiring second correspondence information that associates factor information relating to a prescribed factor that affects purification accuracy with the target static pressure value,

the target static pressure value in the new operation is determined based on the second correspondence information and the acquired information corresponding to the factor information.

12. Purification device according to claim 11, when dependent on at least claim 2,

the control device is configured to: when a new operation of the purification apparatus is performed by an operation using the user interface, the second correspondence information can be updated based on a combination of information corresponding to the factor information acquired for the new operation and the detection result of the static pressure sensor acquired in the new operation.

13. The purification apparatus of claim 12,

the second corresponding information is a predictive model having the factor information as an explanatory variable and the target static pressure value as a target variable,

the control device is configured to update the prediction model by learning based on artificial intelligence.

14. The purification apparatus according to any one of claims 8 to 13,

the control device is configured to output operation history information of the purification device including detection results of the plurality of static pressure sensors.