JP2021062319A - Soundness evaluation system and soundness evaluation program - Google Patents

Abstract

To provide a soundness evaluation system that can preferably evaluate soundness of a magnetic separator.SOLUTION: A soundness evaluation system includes: a magnetic separator 10 including a case 11 and a magnet bar 20 capable of being pulled out from the case 11 and adsorbing a magnetic substance 2b from an object to be processed 2 loaded into the case 11 using the magnet bar 20; a magnetic force information acquisition unit 52 for acquiring magnetic force information relating to magnetic force of the magnet bar 20 when the magnet bar 20 is pulled out; a position information acquisition unit 51 for acquiring position information relating to a position where the magnetic force information on the magnet bar 20 is acquired; and an evaluation unit 57 for evaluating soundness of the magnetic separator on the basis of the magnetic force information and the position information.SELECTED DRAWING: Figure 1

Description

The present invention relates to a soundness evaluation system and a soundness evaluation program for a magnetic separator.

Conventionally, a magnetic separator has been known that uses a magnet to adsorb and remove foreign substances such as iron-based and stainless-based metal wear powder and metal pieces mixed in various raw materials such as powdery particles, liquids, and fluids, and products.

Japanese Patent No. 3426228

The magnetic force of a magnet decreases due to various factors such as deterioration over time, usage environment such as temperature, impact, and corrosion due to moisture. Conventionally, deterioration of a magnet has been confirmed by visual inspection or inspection using a magnetic measuring instrument at the time of maintenance or the like. However, since the measurement requires work by an operator or the magnetic separator must be stopped during the measurement, a more efficient method for measuring the magnetic force has been required.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a soundness evaluation system and a soundness evaluation program capable of suitably evaluating the soundness of a magnetic separator.

The soundness evaluation system according to the present invention has a case and a magnet bar that can be inserted and removed from the case in order to solve the above-mentioned problems, and the magnetic material in the object to be processed to be put into the case. A magnetic separator that attracts the magnet bar with the magnet bar, a magnetic force information acquisition unit that acquires magnetic force information regarding the magnetic force of the magnet bar when the magnet bar is pulled out, and position information regarding the position where the magnetic force information is acquired in the magnet bar. A position information acquisition unit for acquiring the above and an evaluation unit for evaluating the soundness of the magnetic separator based on the magnetic force information and the position information are provided.
Further, the soundness evaluation program according to the present invention has a case and a magnet bar that can be inserted and removed from the case, and the magnetic material in the object to be processed to be put into the case is attracted by the magnet bar. A soundness evaluation program for evaluating the soundness of a magnetic separator, in which a magnetic force information acquisition unit that acquires magnetic force information regarding the magnetic force of the magnet bar when the magnet bar is pulled out and the magnetic force information of the magnet bar are acquired. It includes a position information acquisition unit that acquires position information related to the above position, and an evaluation unit that evaluates the soundness of the magnetic separator based on the magnetic force information and the position information.

In the soundness evaluation system and the soundness evaluation program according to the present invention, the soundness of the magnetic separator can be suitably evaluated.

The functional block diagram which shows one Embodiment of the soundness evaluation system which concerns on this invention. A flowchart illustrating a soundness evaluation process. A graph that visualizes data related to changes in magnetic force with respect to the measurement position of the magnet bar.

An embodiment of the soundness evaluation system and the soundness evaluation program according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a functional block diagram showing an embodiment of a soundness evaluation system according to the present invention.

The soundness evaluation system 1 includes a magnetic separator 10, a magnetic sensor 30, a temperature sensor 40, a control unit 50, and a display unit 60.

The magnetic separator 10 selects and removes the magnetic material 2b contained in the object to be processed 2 by adsorbing it with the magnet bar 20. In the following description, the vertical and horizontal directions of the magnetic separator 10 follow the vertical and horizontal directions in FIG. The magnetic separator 10 includes a case 11, a magnet bar 20, a magnet insertion / removal mechanism 25, and a control panel 29.

The case 11 has a main body 12, a charging port 13, a powder outlet 14, a partition plate 15, a scraper support plate 16, and a magnetic material outlet 17.

The main body 12 has a processing space 18a that houses the magnet bar 20 and serves as a path for the object 2 to be processed. The input port 13 is formed above the main body 12, and the object to be processed 2 is input. The powder outlet 14 is formed downward (downward in the vertical direction) with respect to the charging port 13, and the powder 2a in the treated object 2 is discharged.

The partition plate 15 is formed in the main body 12 in the vertical direction. The partition plate 15 partitions the inside of the main body 12 from the processing space 18a which is the path of the object 2 to be processed and the other spaces. The partition plate 15 has a partition plate side insertion / extraction port 15a through which the magnet bar 20 penetrates.

The scraper support plate 16 is formed in the main body 12 in the vertical direction. The scraper support plate 16 is arranged in the extraction direction (left side in the drawing) of the magnet bar 20 with respect to the processing space 18a. The scraper support plate 16 has a support plate side insertion / extraction port 16a and a scraper 19.

The magnet bar 20 is passed through the support plate side insertion / extraction port 16a. The scraper 19 is a member fixed to the inner surface of the support plate side insertion / extraction port 16a. The scraper 19 scrapes the magnetic material 2b adsorbed on the outer periphery of the magnet bar 20 from the magnet bar 20.

The magnetic material outlet 17 is formed below the scraper 19 in the magnetic material removal space 18b between the partition plate 15 and the scraper 19. The magnetic material outlet 17 discharges the magnetic material 2b scraped from the magnet bar 20 by the scraper 19.

The magnet bar 20 (magnet) has, for example, a magnet pipe, a plurality of permanent magnets, a plurality of yokes, and a pair of end plugs.

The magnet pipe is made of a non-magnetic metal (for example, stainless steel or titanium) and has a hollow shape having a substantially circular cross-sectional shape orthogonal to the length direction. The magnet pipe houses a permanent magnet, a yoke and an end plug inside. The permanent magnet, the yoke, and the end plug have a shape whose cross-sectional shape orthogonal to the length direction of the magnet bar 20 (hereinafter, may be simply referred to as “length direction”) corresponds to the inner shape of the magnet pipe.

Permanent magnets are magnets such as neodymium-based rare earth magnets. The permanent magnets are arranged so that the same poles face each other in the length direction. The yoke is a magnetic material such as iron. The end plug is a substantially circular non-magnetic metal (for example, stainless steel such as SUS304, SUS316, SUS316L). Permanent magnets and yokes are alternately arranged in the magnet pipe. The pair of end plugs sandwich the permanent magnet and yoke at both ends of the magnet bar.

Each magnet bar 20 is connected to a magnet rod 21. The magnet rod 21 extends to the outside of the processing space 18a and the magnetic material removal space 18b via the partition plate side insertion / extraction port 15a and the support plate side insertion / extraction port 16a. The plurality of magnet rods 21 are connected by a connecting plate 22 at an end opposite to the connecting end with the magnet bar 20.

The magnet insertion / removal mechanism 25 includes a cylinder 26, a cylinder rod 27, and a stepping motor 28.

The cylinder 26 extends in the length direction of the magnet bar 20 and one end thereof is fixed to the case 11. The cylinder rod 27 is removably connected to the cylinder 26. The cylinder rod 27 is connected to the connecting plate 22 at an end opposite to the connecting end with the cylinder 26.

The stepping motor 28 drives the cylinder rod 27 in the insertion / removal direction (left-right direction) of the magnet bar 20 to process the magnet bar 20 via the partition plate side insertion / removal port 15a and the support plate side insertion / removal port 16a (case 11). Insert and remove from space 18a.

The control panel 29 controls various operations of the magnetic separator 10. In particular, the control panel 29 cleans the magnet bar 20 at regular intervals (for example, every hour). Specifically, the control panel 29 automatically operates the stepping motor 28 at regular intervals to remove the magnet bar 20 from the processing space 18a. As a result, the magnetic material 2b adsorbed on the magnet bar 20 is scraped from the magnet bar 20 in the magnetic material removal space 18b and discharged from the magnetic material outlet 17.

The magnetic sensor 30 and the temperature sensor 40 are mounted on, for example, one substrate and arranged in the main body 12. A plurality of magnetic sensors 30 are arranged according to the number of magnet bars 20, and the magnetic force of each magnet bar 20 when the magnet bars 20 are inserted and removed is measured.

The control unit 50 includes a position information acquisition unit 51, a magnetic force information acquisition unit 52, a torque information acquisition unit 53, a power consumption information acquisition unit 54, a temperature information acquisition unit 55, a storage unit 56, and an evaluation unit 57. Has.

The position information acquisition unit 51 acquires the moving distance of the magnet bar 20 as position information from the distance meter built in the stepping motor 28. The position information is used to identify a place where the magnetic force is measured by the magnetic sensor 30 in the magnet bar 20. The magnetic force information acquisition unit 52 acquires the magnetic force of the magnet bar 20 measured by the magnetic sensor 30 as magnetic force information. The torque information acquisition unit 53 and the power consumption information acquisition unit 54 acquire torque information and power consumption information at the time of inserting and removing the magnet bar 20 from the stepping motor 28. The temperature information acquisition unit 55 acquires the temperature information in the case 11 measured by the temperature sensor 40.

The storage unit 56 stores various information acquired by the position information acquisition unit 51, the magnetic force information acquisition unit 52, the torque information acquisition unit 53, the power consumption information acquisition unit 54, and the temperature information acquisition unit 55. In addition, the storage unit 56 stores various information in the normal state of the magnetic separator 10, which is used for evaluating the soundness of the magnetic separator 10. Specifically, the storage unit 56 stores the magnetic force information of the magnet bar 20 in the normal state as the normal magnetic force information. Further, the storage unit 56 stores the torque information of the magnet bar 20 in the normal state as the normal torque information. The storage unit 56 stores the power consumption information of the magnet bar 20 in the normal state as the normal power consumption information. The storage unit 56 stores the temperature information in the case 11 in the normal state as the normal temperature information.

The normal magnetic force information, the normal torque information, the normal power consumption information, and the normal temperature information are, for example, information (at the position) according to the measured position on the magnet bar 20 based on the position information of the magnet bar 20. It is stored as information that changes accordingly.

The evaluation unit 57 evaluates the soundness of the magnetic separator 10 based on various information including magnetic force information and position information. Specifically, the evaluation unit 57 compares the acquired magnetic force information and position information with the normal magnetic force information. The evaluation unit 57 evaluates that the magnet bar 20 (magnetic separator 10) is normal when the difference between the acquired magnetic force information and the normal magnetic force information is within a predetermined value. Further, the evaluation unit 57 compares the acquired torque information with the normal torque information. The evaluation unit 57 evaluates that the magnetic separator 10 is normal when the difference between the acquired torque information and the normal torque information is within a predetermined value. Further, the evaluation unit 57 compares the acquired power consumption information with the normal power consumption information. The evaluation unit 57 evaluates that the magnetic separator 10 is normal when the difference between the acquired power consumption information and the normal power consumption information is within a predetermined value.

The display unit 60 is a display, and displays the information obtained by the information acquisition units 51 to 55 and the evaluation unit 57 to the user.

Next, the process executed by the soundness evaluation system 1 will be described. FIG. 2 is a flowchart illustrating the soundness evaluation process.

In step S1, the control unit 50 determines whether or not the cleaning time has come. The arrival of the cleaning time is determined, for example, by the information obtained from the control panel 29 connected to the control unit 50. When the control unit 50 determines that the cleaning time has not arrived (NO in step S1), the control unit 50 waits until the cleaning time has arrived.

When it is determined that the cleaning time has come (YES in step S1), the control unit 50 acquires the position information and the magnetic information of the magnet bar 20 performing the operation of being extracted from the processing space 18a in step S2. Specifically, the position information acquisition unit 51 acquires the moving distance of the magnet bar 20 from the stepping motor 28. Based on this, the position information acquisition unit 51 acquires the measurement position of the magnetic force information. The magnetic force information acquisition unit 52 acquires the magnetic force information of each magnet bar 20 from the magnetic sensor 30. Further, the control unit 50 also acquires the temperature and torque information and power consumption information of the stepping motor 28 from the temperature sensor 40, the torque information acquisition unit 53, and the power consumption information acquisition unit 54.

In step S3, the evaluation unit 57 evaluates the soundness of the magnetic separator 10. Specifically, the evaluation unit 57 associates the position information and the magnetic force information with the measurement time and compares them.

For example, FIG. 3 is a graph that visualizes data on changes in magnetic force with respect to the measurement position of the magnet bar 20. In the graph of FIG. 3, the information obtained is visualized with the measurement position of the magnet bar 20 on the horizontal axis and the magnetic force of the magnet bar 20 on the vertical axis. Since the magnet bar 20 intermittently accommodates a plurality of permanent magnets, the magnetic force periodically changes with respect to the measurement position in the normal state.

The evaluation unit 57 compares the normal information obtained based on the normal magnetic force information with the measurement information obtained based on the position information and the magnetic force information acquired in step S2. The evaluation unit 57 evaluates that the magnet bar 20 is normal when the decrease (difference) in magnetic force between the normal information and the measurement information is within a predetermined value. On the other hand, for example, when the magnetic force that should be obtained originally is not obtained as in the region 70, there is a possibility that the permanent magnet housed in the place is deteriorated and the desired magnetic force is not obtained. is there. In such a case, the evaluation unit 57 evaluates that the magnet bar 20 is abnormal.

Similarly, the evaluation unit 57 can further evaluate the soundness and estimate the factors of the obtained evaluation by evaluating the magnetic separator 10 in consideration of the temperature information, the torque information, and the power consumption information.

For example, when the magnet bar 20 passes through the scraper 19, it passes while scraping the attracted magnetic material 2b, so that the torque and power consumption of the stepping motor 28 are larger than when the magnet bar 20 is not scraped off. Therefore, if the torque information and the power consumption information obtained by the measurement have a region smaller than the normal torque information and the normal power consumption information, it is possible that the scraper 19 has not scraped off the magnetic material 2b. There is. It is considered that the cause is that, for example, the scraper 19 is deteriorated and damaged by heat or the like and does not function as the scraper 19. Further, as a factor, it is considered that the magnet bar 20 is deteriorated and the magnetic material 2b, which is normally expected to be adsorbed, is not adsorbed.

In this way, the acquired torque information or power consumption information is the normal torque information and the normal power consumption information at the position where the magnetic body 2b is originally attracted and the torque and power consumption are large. When it is smaller than (when there is a difference larger than a predetermined value), the evaluation unit 57 evaluates that the scraper 19 is abnormal. At this time, the evaluation unit 57 estimates that, for example, when the acquired temperature information is higher than the normal temperature information, the temperature inside the case 11 is high for some reason, and the scraper 19 is deteriorated due to this. it can.

In step S4, the control unit 50 outputs the obtained evaluation result. The control unit 50 notifies the user of the evaluation result by displaying it on the display unit 60. For example, when the magnetic force of the magnet bar 20 is lowered, the control unit 50 gives a notification prompting the replacement of the magnet bar 20. In addition to the display on the display unit 60, the control unit 50 may send the user an e-mail via a network or make it viewable on the web.

Such a soundness evaluation system 1 can suitably evaluate the soundness of the magnetic separator 10. That is, in the conventional case, the magnet bar 20 is taken out and the deterioration inspection of the magnet bar 20 which has been performed by using a magnetic measuring instrument or the like is performed. The soundness of the magnetic separator 10 can be evaluated.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and the equivalent scope thereof.

The position information may be acquired not only from the stepping motor but also by using a rotary encoder provided separately, a distance sensor provided in a case or the like, an image recognition process using a camera, or the like.

Although the example in which the magnet bar 20 is inserted and removed by the stepping motor 28 has been described, the present invention can also be applied when the magnet bar 20 is manually inserted and removed.

Each unit included in the control unit 50 is shown as one unit, but the configuration example is not limited to this. For example, the magnetic force information acquisition unit 52 and the temperature information acquisition unit 55 are microcomputers mounted on a substrate on which the magnetic sensor 30 and the temperature sensor 40 are mounted, process the obtained measurement data, and select necessary information. You may. In this case, the PLC (Programmable Logic Controller) prepared separately is used as the evaluation unit 57 and the storage unit 56, and the information acquired from the microcomputer to the PLC is transmitted. Further, the evaluation unit 57 and the storage unit 56 may be realized by using cloud computing. In this case, the information acquired by the various information acquisition units 51 to 55 is transmitted to the evaluation unit 57 and the storage unit 56 via the network.

The object to be treated may be not only a powder but also another embodiment such as a liquid.

The present invention may be in a mode that can be retrofitted to an existing magnetic separator as a soundness evaluation program. In this case, the soundness evaluation program is used by being incorporated in a computer or the like that appropriately acquires necessary information from a magnetic separator or via a network and calculates the information.

The soundness evaluation system may perform necessary calculations on the information obtained from various information acquisition units to obtain feature quantities. The obtained feature quantity may be used as learning data for machine learning or deep learning, for example, and may be used for controlling a magnetic separator. For example, the soundness evaluation system may estimate the tendency of the amount of magnetic material adhered from the obtained information and determine a suitable timing of the cleaning time instead of a fixed cycle. The health assessment system may also predict the life of the magnet bar or scraper and prompt the user to replace it before it reaches the end of its life.

1 Soundness evaluation system 2 Processed object 2a Powder 2b Magnetic material 10 Magnetic separator 11 Case 12 Main body 13 Input port 14 Powder outlet 15 Partition plate 15a Partition plate side insertion / extraction port 16 Scraper support plate 16a Support plate side insertion / extraction port 17 Magnetic Body outlet 18a Processing space 18b Magnetic material removal space 19 Scraper 20 Magnet bar 21 Magnet rod 22 Connecting plate 25 Magnet insertion / removal mechanism 26 Cylinder 27 Cylinder rod 28 Stepping motor 29 Control panel 30 Magnetic sensor 40 Temperature sensor 50 Control unit 51 Position information acquisition unit 52 Magnetic information acquisition unit 53 Torque information acquisition unit 54 Power consumption information acquisition unit 55 Temperature information acquisition unit 56 Storage unit 57 Evaluation unit 60 Display unit 70 Area

The soundness evaluation system according to the present invention has a case and a magnet bar that can be inserted and removed from the case in order to solve the above-mentioned problems, and the magnetic material in the object to be processed to be put into the case. a magnetic separator that adsorbs at the magnet bar, and magnetic information acquisition unit for acquiring the magnetic bar of the magnetic force when withdrawing the magnet bar as magnetic information, position information about a position where the magnetic force information is acquired in the magnet bar A position information acquisition unit for acquiring the above and an evaluation unit for evaluating the soundness of the magnetic separator based on the magnetic force information and the position information are provided.
Further, the soundness evaluation program according to the present invention has a case and a magnet bar that can be inserted and removed from the case, and the magnetic material in the object to be processed to be put into the case is attracted by the magnet bar. A soundness evaluation program for evaluating the soundness of a magnetic separator, in which a magnetic force information acquisition unit that acquires the magnetic force of the magnet bar when the magnet bar is pulled out as magnetic force information and the magnetic force information of the magnet bar are acquired. It includes a position information acquisition unit that acquires position information related to the above position, and an evaluation unit that evaluates the soundness of the magnetic separator based on the magnetic force information and the position information.

Claims (6)

A magnetic separator having a case and a magnet bar that can be inserted and removed from the case, and attracting a magnetic material in an object to be loaded into the case with the magnet bar.
A magnetic force information acquisition unit that acquires magnetic force information regarding the magnetic force of the magnet bar when the magnet bar is pulled out, and a magnetic force information acquisition unit.
A position information acquisition unit that acquires position information regarding the position where the magnetic force information is acquired in the magnet bar, and a position information acquisition unit.
A soundness evaluation system including an evaluation unit for evaluating the soundness of the magnetic separator based on the magnetic force information and the position information. Further, a storage unit for storing the normal magnetic force information, which is the normal magnetic force information of the magnet bar, is provided.
The evaluation unit compares the magnetic force information with the normal magnetic force information based on the acquired magnetic force information and the position information, and the difference between the acquired magnetic force information and the normal magnetic force information is within a predetermined value. The soundness evaluation system according to claim 1, wherein the magnetic separator is evaluated as normal. A stepping motor for driving the magnet bar and inserting and removing the magnet bar from the case is further provided.
The soundness evaluation system according to claim 2, wherein the position information acquisition unit acquires the position information from the stepping motor. A torque information acquisition unit for acquiring torque information of the stepping motor is further provided.
The storage unit further stores the normal torque information, which is the normal torque information of the magnet bar.
The evaluation unit compares the acquired torque information with the normal torque information, and when the difference between the acquired torque information and the normal torque information is within a predetermined value, the magnetic separator is normal. The soundness evaluation system according to claim 3, which evaluates that there is. Further provided with a power consumption information acquisition unit for acquiring power consumption information of the stepping motor, the stepping motor is further provided.
The storage unit further stores the normal power consumption information, which is the normal power consumption information of the magnet bar.
The evaluation unit compares the acquired power consumption information with the normal power consumption information, and when the difference between the acquired power consumption information and the normal power consumption information is within a predetermined value, the magnetic selection unit is used. The soundness evaluation system according to claim 3, wherein the machine is evaluated as normal. A soundness evaluation program that has a case and a magnet bar that can be inserted and removed from the case, and evaluates the soundness of the magnetic separator that attracts the magnetic material in the object to be processed into the case with the magnet bar. And
A magnetic force information acquisition unit that acquires magnetic force information regarding the magnetic force of the magnet bar when the magnet bar is pulled out, and a magnetic force information acquisition unit.
A position information acquisition unit that acquires position information regarding the position where the magnetic force information is acquired in the magnet bar, and a position information acquisition unit.
A soundness evaluation program including an evaluation unit for evaluating the soundness of the magnetic separator based on the magnetic force information and the position information.

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