Material iron removal device and control method of material iron removal device

Abstract

The invention discloses a material iron removal device and a control method of the material iron removal device. The material iron removal device comprises a feeding channel, an iron removal cavity and a discharging channel which communicate with one another in sequence. The magnetic disk assembly is rotatably arranged in the iron removal cavity, the magnetic disk assembly is used for sucking iron impurities in the materials, and the magnetic disk assembly is provided with a material passing area for the materials to pass through; the driving motor is connected with the magnetic disk assembly to drive the magnetic disk assembly to rotate; the first detection module is used for detecting the material flow in the feeding channel; the first detection module and the driving motor are in communication connection with the control module, and the control module is configured to control the rotating speed of the driving motor according to the flow information obtained by the first detection module. According to the material iron removal device, the magnetic disk assembly can rotate, the risk of material blockage caused by excessive material discharging is reduced, and the risk of material blockage is further greatly reduced through real-time monitoring of the first detection module and dynamic adaptation of the rotating speed.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment, and in particular to a material iron removal device and a control method for the material iron removal device. Background Technology

[0002] In the production process of some products, it is necessary to remove ferromagnetic impurities from the materials to avoid affecting the quality of the products. For example, iron in lithium battery materials can affect the conductivity of the battery, and iron in pharmaceutical raw materials can pose safety hazards.

[0003] In related technologies, material removal devices are prone to blockage during the iron removal process, which affects the iron removal efficiency. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a material iron removal device that can reduce dead zones where iron is not removed, improve the cleanliness of iron removal, reduce the risk of material blockage caused by excessive material feeding, and improve iron removal efficiency.

[0005] In another aspect, the present invention provides a control method for the above-mentioned iron removal device for materials.

[0006] According to an embodiment of the present invention, a material iron removal device includes: a housing defining a feeding channel, an iron removal cavity, and a discharging channel, wherein the feeding channel and the discharging channel are respectively connected to the iron removal cavity; a disk assembly rotatably disposed within the iron removal cavity, the disk assembly being used to extract ferromagnetic impurities from the material, the disk assembly having a material passage area for material to pass through; a drive motor connected to the disk assembly to drive the disk assembly to rotate; and a first detection module for detecting the flow rate F of the material in the feeding channel. C The control module is configured to control the rotational speed of the drive motor based on the flow information obtained by the first detection module.

[0007] According to the material iron removal device of the present invention, the disk assembly can rotate, which not only makes the magnetic field coverage more comprehensive, but also extends the residence time of the material in the iron removal chamber, and the material has more sufficient contact with the disk, reducing dead corners where iron is not removed, improving the iron removal cleanliness, and reducing the risk of material blockage caused by excessive material feeding; through real-time monitoring and dynamic speed adaptation by the first detection module, the risk of material blockage is further greatly reduced, reducing the risk of production capacity loss due to material stoppage for cleaning, improving iron removal efficiency, and adaptive speed adjustment avoids redundant energy consumption at fixed high speeds, reducing the energy consumption for iron removal per unit of material, reducing the probability of knocking cleaning due to blockage, thereby reducing the amount of additional metal impurities introduced and improving product quality; it can adapt to materials with different flow rates without the need to change hardware, improving product adaptability, greatly reducing the operating threshold, and reducing manual intervention.

[0008] In some embodiments, the disk assembly can be energized to adsorb ferromagnetic impurities, and the material iron removal device has an iron discharge mode in which the disk assembly is de-energized.

[0009] In some embodiments, the housing further defines an iron discharge channel located below the iron removal chamber, and the material iron removal device is further provided with a switching valve having a switchable first state and a second state. In the first state, the discharge channel is in communication with the iron removal chamber and the iron discharge channel is closed. In the second state, the iron discharge channel is in communication with the iron removal chamber and the discharge channel is closed. And / or, the housing further includes a feed valve for controlling the opening and closing of the feed channel. In the iron removal mode, the feed valve controls the feed channel to be closed.

[0010] In some embodiments, in the iron removal mode, the feed valve controls the feed channel to close, and after a first set time, the switching valve switches to the second state, and the disk assembly is powered off.

[0011] In some embodiments, the material iron removal device further includes: a second detection module, the second detection module being used to detect the load condition of the drive motor, the second detection module being communicatively connected to the control module, and in the iron removal mode, the control module controlling the speed of the drive motor according to the data detected by the second detection module; preferably, the second detection module is configured to detect the current of the drive motor.

[0012] In some embodiments, the material iron removal device further includes an alerting device connected to the control module, the control module being configured to control the alerting device to issue an alarm signal under set conditions.

[0013] In some embodiments, the disk assembly includes: a rotating shaft extending at least in a vertical direction, the driving motor driving the rotating shaft to rotate; a plurality of iron cores spaced apart along the axial direction of the rotating shaft, the material passage area including a through hole provided in each iron core.

[0014] In some embodiments, each of the iron cores includes a plurality of annular support portions, which are spaced apart in the radial direction of the rotation axis; adjacent annular support portions are connected by a connecting portion, and the connecting portion and the annular support portion define the through hole.

[0015] In some embodiments, the two ends of the connecting portion are respectively connected to two of the annular support portions, and a plurality of the connecting portions between the two annular support portions are sequentially connected end to end along the circumference of the rotation axis.

[0016] In some embodiments, two adjacent iron cores are staggered in the circumferential direction of the rotating shaft, such that the connecting portion of one iron core is directly opposite the through hole of the adjacent iron core.

[0017] In some embodiments, the rotating shaft is provided with a gas channel adapted to connect to a gas pressure supply device, and the gas channel is provided with a plurality of air blowing holes located on the peripheral wall of the rotating shaft.

[0018] In some embodiments, each of the iron cores is provided with air blowing holes on both the upper and lower sides; and / or, at least some of the air blowing holes are evenly arranged circumferentially along the rotation axis; and / or, the gas channel is connected to the air pressure supply device through an air pressure valve, and the control module is connected to the air pressure valve to control the air pressure of the air blowing holes.

[0019] In some embodiments, the pneumatic valve is configured as a pulse-controlled valve.

[0020] According to an embodiment of the present invention, a control method for a material iron removal device is provided, wherein the material iron removal device is as described in the above-mentioned technical solution, the material iron removal device includes a second detection module, the second detection module being used to detect the load condition of the drive motor, and the second detection module being communicatively connected to the control module; the control method includes: controlling the flow rate F of the material in the material channel detected by the first detection module. C The disk assembly adsorbs ferromagnetic impurities from the material, and adjusts the speed of the drive motor in real time according to the detection results of the first detection module; after a second set time, the feeding channel is controlled to stop feeding, and the ferromagnetic impurities on the disk assembly are controlled to fall off, and the speed of the drive motor is adjusted in real time according to the detection results of the second detection module.

[0021] In some embodiments, when the detected traffic F C The change in load within a third set time period is greater than the first set value; and / or, the change in load on the drive motor within a fourth set time period is greater than the second set value; the speed of the drive motor is controlled to switch to the first set speed.

[0022] In some embodiments, after controlling the drive motor to operate at a first set speed for a fifth set time, when the flow rate F is detected... C Satisfying F1≤F C If the speed of the drive motor is ≤F2, then the speed of the drive motor is switched to the second set speed; when the material flow rate F is detected... C If <F1, the machine will stop and an alarm will sound.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a material iron removal device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a disk component according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the disk assembly core.

[0025] Reference numerals: 100, material iron removal device; 1, outer shell; 11, feeding channel; 12, iron removal chamber; 13, discharge channel; 14, iron discharge channel; 2, disk assembly; 21, rotating shaft; 211, air blowing hole; 22, iron core; 221, through hole; 222, circular ring support; 223, connecting part; 3, drive motor; 4, first detection module; 5, control module; 6, switching valve; 8, second detection module; 9, control cabinet. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The following is for reference. Figures 1-3 A material iron removal device 100 according to an embodiment of the present invention is described.

[0029] Reference Figure 1 , Figure 2 and Figure 3 According to an embodiment of the present invention, a material iron removal device 100 includes: a housing 1, a disk assembly 2, and a drive motor 3. The housing 1 defines a feeding channel 11, an iron removal cavity 12, and a discharge channel 13, which are respectively connected to the iron removal cavity 12. The disk assembly 2 is rotatably disposed in the iron removal cavity 12 and is used to absorb ferromagnetic impurities in the material. The disk assembly 2 is provided with a material passage area for the material to pass through. The drive motor 3 is connected to the disk assembly 2 to drive the disk assembly 2 to rotate.

[0030] When the material iron removal device 100 is performing iron removal (material iron removal mode), the powdery material enters the iron removal chamber 12 through the feed channel 11 and moves toward the discharge channel 13. The material needs to pass through the material passage area of ​​the disk assembly 2 in the iron removal chamber 12, so that the disk assembly 2 can absorb the ferromagnetic impurities in the material through the magnetic field, and the remaining material is discharged through the discharge channel 13.

[0031] During this process, the drive motor 3 drives the disk assembly 2 to rotate, which not only makes the magnetic field coverage more comprehensive and the material more fully in contact with the disk, reducing dead corners where iron is not removed and improving the cleanliness of iron removal, but also reduces the risk of material blockage caused by excessive material feeding.

[0032] Furthermore, in this embodiment of the invention, the material iron removal device 100 also includes a first detection module 4 and a control module 5. The first detection module 4 is used to detect the flow rate F of the material in the feed channel 11. C The first detection module 4 and the drive motor 3 are respectively connected to the control module 5. The control module 5 is configured to control the speed of the drive motor 3 according to the flow information obtained by the first detection module 4.

[0033] The first detection module 4 can monitor the instantaneous flow rate of the material in real time, determine the risk of material blockage, and provide a basis for speed adjustment. Specifically, the first detection module 4 can be an electromagnetic induction powder flow meter, a weighing mass flow meter, or a laser diffraction powder flow meter. This invention does not limit this, as long as it can monitor the instantaneous flow rate of the material in the feed channel 11 in real time.

[0034] The control module 5 is configured to control the speed of the drive motor 3 based on the flow information obtained by the first detection module 4.

[0035] For example, the control module 5 can control the rotational speed of the drive motor 3 and the flow rate F of the material. C It is directly proportional to the material flow rate F. C The larger the value, the higher the speed of the drive motor 3.

[0036] For example, control module 5 can also control: when the material flow rate F C Within the first flow range, the speed of the drive motor 3 is controlled to be the first speed, when the material flow rate F C Within the second flow range, the speed of drive motor 3 is controlled to be the second speed, when the material flow rate F C Within the third flow range, the speed of drive motor 3 is controlled to be the third speed, that is, based on the material flow rate F. C The value controls the gear of drive motor 3.

[0037] For example, control module 5 can also control: when the material flow rate F C When the flow rate is within a certain range, the speed of the drive motor 3 is controlled to be the set speed for the corresponding range. When the material flow rate F C When the flow rate is within other ranges, the speed of the drive motor 3 is controlled in relation to the material flow rate F. C The linear relationship makes the material flow rate F C Within this flow range, the speed of the drive motor 3 can be steplessly adjusted.

[0038] Specifically, when F C When the first set flow rate F1 is reached, the speed of the drive motor 3 is controlled to be the first speed V1; when F... C > When the second set flow rate F2 is reached, the rotational speed of the drive motor 3 is controlled to be the second rotational speed V2, where F2 > F1 and V2 > V1; when F1 ≤ F C When F2 is less than or equal to 2, the speed of the drive motor 3 is controlled to be the third speed V3, then F C V3 satisfies 0 < (V3 - V1) / (F) C -F1)≤(V2-V1) / (F2-F1).

[0039] Wherein, the first speed is the base speed in the material iron removal mode to ensure sufficient iron removal; the second speed V2 is the maximum speed in the material iron removal mode. By setting this maximum speed, overload of the drive motor 3 can be prevented, reducing the risk of damage to the drive motor 3. 0 < (V3 - V1) / (F C -F1), indicating that when F1≤F C When ≤F2, the third rotational speed V3 and the material flow rate F C Positive correlation, F C As the amount of material increases, the speed of the drive motor increases synchronously. The turbulence generated by the rotation disperses the material, reducing the risk of material blockage; (V3-V1) / (F C If -F1) ≤ (V2-V1) / (F2-F1), then it is limited to when F1 ≤ F C When the value of V3 is less than or equal to F2, the maximum value of V3 is equal to V2, which can prevent the drive motor 3 from being overloaded and reduce the risk of damage to the drive motor 3.

[0040] This invention does not specify the first set flow rate F1, the second set flow rate F2, the first rotational speed V1, the second rotational speed V2, or (V3-V1) / (F C The specific value of -F1 is limited and confirmed based on the equipment debugging results in specific application scenarios. For example, in some specific application scenarios, the first detection module 4 can detect a range of 0-600kg / h (accuracy ±1%), F1 is 50kg / h, F2 is 100kg / h, V1 is 5Hz, V2 is 15Hz, and (V3-V1) / (F C The value of -F1) is 0.05, which means the flow rate F C For every 10 kg / h increase, the speed of drive motor 3 increases by 0.5 Hz.

[0041] According to the material iron removal device 100 of the present invention, the disk assembly 2 can rotate, which not only makes the magnetic field coverage more comprehensive, but also extends the residence time of the material in the iron removal chamber 12, and the material has more sufficient contact with the disk, reducing dead corners where iron is not removed, improving the cleanliness of iron removal, and reducing the risk of material blockage caused by excessive material feeding; through real-time monitoring and dynamic speed adaptation by the first detection module 4, the risk of material blockage is further greatly reduced, reducing the risk of production capacity loss due to material stoppage for cleaning, improving iron removal efficiency, and adaptive speed adjustment avoids redundant energy consumption at fixed high speed, reducing the energy consumption for iron removal per unit of material, reducing the probability of knocking cleaning due to blockage, thereby reducing the amount of additional metal impurities introduced and improving product quality; it can adapt to materials with different flow rates without the need to change hardware, improving product adaptability, greatly reducing the operating threshold, and reducing manual intervention.

[0042] In some embodiments, the disk assembly 2 can be energized to adsorb ferromagnetic impurities, and the material iron removal device 100 has an iron removal mode in which the disk assembly 2 is de-energized.

[0043] When the disk assembly 2 is loaded with a certain amount of ferromagnetic impurities and needs to be cleaned, the disk assembly 2 can be powered off, causing it to lose its magnetism and facilitating the removal of the ferromagnetic impurities. In other embodiments, the disk assembly 2 can also be a common permanent magnet, and the ferromagnetic impurities on the disk assembly 2 can be cleaned by tapping, replacing the entire assembly, or rinsing. This invention does not limit the scope of the invention.

[0044] In some embodiments, the housing 1 further defines an iron discharge channel 14 located below the iron removal chamber 12, and the material iron removal device 100 is further provided with a switching valve 6. The switching valve 6 has a switchable first state and a second state. In the first state, the discharge channel 13 is connected to the iron removal chamber 12 and the iron discharge channel 14 is closed. In the second state, the iron discharge channel 14 is connected to the iron removal chamber 12 and the discharge channel 13 is closed.

[0045] When the material removal device 100 is normally removing iron, the switching valve 6 is in the first state, the discharge channel 13 is connected to the iron removal chamber 12, the iron discharge channel 14 is closed, and the material enters the iron removal chamber 12 through the feed channel 11. After the ferromagnetic impurities are removed by the disk assembly 2, it is discharged through the discharge channel 13. When it is necessary to clean the ferromagnetic impurities on the disk assembly 2, the switching valve 6 switches to the second state, the iron discharge channel 14 is connected to the iron removal chamber 12, and the discharge channel 13 is closed. In this way, the ferromagnetic impurities can be discharged through the iron discharge channel 14 after leaving the disk assembly 2, instead of entering the discharge channel 13. This not only improves the convenience of cleaning ferromagnetic impurities, but also helps to improve the purity of the material.

[0046] In some embodiments, the material iron removal device 100 further includes a feed valve that controls the opening and closing of the feed channel 11. In the iron discharge mode, the feed valve controls the feed channel 11 to close.

[0047] The above technical solution avoids the possibility of material entering the iron removal chamber 12 during the iron removal mode, avoids the risk of material being discharged together with ferromagnetic impurities, and reduces material waste.

[0048] In some further embodiments, in the iron removal mode, the feed valve controls the feed channel 11 to close, and after a first set time, the switching valve 6 switches to the second state, and the disk assembly 2 is de-energized.

[0049] Through the above technical solution, in the iron removal mode, the feed valve controls the feed channel 11 to close, stopping the feeding. After a first set time, the switching valve 6 switches to the second state, allowing the material in the iron removal channel to be emptied, further reducing material waste.

[0050] In some embodiments, the material iron removal device 100 further includes a second detection module 8, which is used to detect the load condition of the drive motor 3. The second detection module 8 is communicatively connected to the control module 5. In the iron removal mode, the control module 5 controls the speed of the drive motor 3 according to the data detected by the second detection module 8.

[0051] The second detection module 8 can monitor the load of the drive motor 3 in real time. A higher load indicates heavier material adhesion to the iron core 22, providing a basis for adjusting the parameters of the iron removal mode. Specifically, the second detection module 8 can be a torque sensor for detecting the torque of the drive motor 3, a current sensor for detecting the current of the drive motor 3, a voltage sensor for detecting the voltage of the drive motor 3, or other sensors, as long as the load torque T of the drive motor 3 can be determined from the detected data. C This invention does not impose any limitations on this.

[0052] In the iron removal mode, the control module 5 adjusts the speed of the drive motor 3 based on the data detected by the second detection module 8.

[0053] For example, the control module 5 can control the speed of the drive motor 3 to be directly proportional to the load torque, that is, the greater the load torque, the greater the speed of the drive motor 3.

[0054] For example, control module 5 can also control: when the load torque T C Within the first torque range, the speed of drive motor 3 is controlled to be the fourth speed, when the load torque T C Within the second torque range, the speed of drive motor 3 is controlled to be the fifth speed, when the load torque TC Within the third torque range, the speed of drive motor 3 is controlled to the sixth speed, that is, the gear of drive motor 3 is controlled according to the value of load torque.

[0055] For example, control module 5 can also control: when the load torque T C When the torque is within a certain range, the speed of the drive motor 3 is controlled to be the set speed for the corresponding torque range. When the load torque T C When the torque range is within a certain range, the speed of the drive motor 3 is linearly related to the load torque, so that the load torque T C Within this torque range, the speed of drive motor 3 can be steplessly adjusted.

[0056] Specifically, when T C When the first set torque T1 is reached, the speed of the drive motor 3 is controlled to be the fourth speed V4, where V4 > V2; when T... C > When the second set torque T2 is reached, the speed of the drive motor 3 is controlled to be the fifth speed V5, where T2 > T1 and V5 > V4; when T1 ≤ T C When T2 is less than or equal to T2, the speed of drive motor 3 is controlled to be the sixth speed V6, and T... C V6 satisfies 0 < (V6 - V4) / (T) C -T1)≤(V5-V4) / (T2-T1).

[0057] It should be noted that, in the material iron removal mode, the material iron removal device 100 operates according to F. C Controlling the speed of drive motor 3, the material iron removal device 100, in iron discharge mode, adjusts according to T. C The two control methods control the speed of the drive motor 3. They belong to two different working modes of the material iron removal device 100 and do not affect each other.

[0058] The fourth speed, V4, is the base speed in the iron removal mode. V4 > V2, indicating that the drive motor 3's speed is higher in the iron removal mode than in the material removal mode, facilitating the removal of ferromagnetic impurities from the disk assembly. The fifth speed, V5, is the maximum speed in the iron removal mode. Setting this maximum speed prevents overload of the drive motor 3, reducing the risk of damage. 0 < (V6 - V4) / (T) C -T1), indicating that when T1≤T C When T2 is less than or equal to T2, the sixth rotational speed V6 and the load torque T C Positive correlation, T C The larger the value, the higher the rotational speed of drive motor 3, which facilitates the removal of ferromagnetic impurities from the disk assembly; (V6-V4) / (T C -T1)≤(V5-V4) / (T2-T1), then it is limited to when T1≤T CWhen T2 is less than or equal to T2, the maximum value of V6 is equal to V5, which can prevent the drive motor 3 from being overloaded and reduce the risk of damage to the drive motor 3.

[0059] This invention does not specify the first set torque T1, the second set torque T2, the fourth speed V4, the fifth speed V5, or (V6-V4) / (T). C The specific value of T1 is limited and confirmed based on the equipment debugging results in specific application scenarios. For example, in some specific application scenarios, T1 is 20 N•m, T2 is 35 N•m, V4 is 20 Hz, V5 is 30 Hz, and (V6-V4) / (T) is... C The value of -T1) is 0.3, which is the load torque T. C For every 5 N•m increase, the speed of drive motor 3 increases by 1.5 Hz.

[0060] Through the above technical solution, the second detection module 8 monitors and dynamically adapts to the rotation speed in real time, which greatly improves the efficiency of removing ferromagnetic impurities from the disk component 2 in the iron removal mode, shortens the iron removal time, and ensures that the iron removal efficiency does not decrease in the next cycle. The adaptive rotation speed adjustment avoids redundant energy consumption at fixed high speeds, reduces the energy consumption for iron removal per unit of material, improves product adaptability, significantly lowers the operating threshold, and reduces manual intervention.

[0061] In some embodiments, the second detection module 8 is configured to detect the current of the drive motor 3.

[0062] For example, the second detection module 8 includes a current sensor (such as a Hall current sensor), a signal filtering circuit, and an analog-to-digital conversion unit. It can suppress electromagnetic interference from the disk assembly 2 and transmit a stable digital signal to the control module 5. The second detection module 8 is an integrated module with signal acquisition, conversion, and transmission functions. Its core function is to convert the current signal of the drive motor 3 into a digital signal that can be recognized by the control module 5, and indirectly realize the monitoring of the load torque according to the motor current-load torque calibration curve pre-input in the control module 5.

[0063] It should be noted that the motor current-load torque calibration curve is first obtained through calibration experiments and then manually imported into control module 5. Its core function is to provide data for "indirectly monitoring load torque by detecting motor current". For example, when the motor current is 1A, the corresponding motor load torque is 5N•m.

[0064] In this embodiment of the invention, the load torque is indirectly monitored by combining the second detection module 8 with the motor current-load torque calibration curve. Compared with the solution of directly detecting the load torque by the torque sensor, the cost of the material iron removal device 100 is effectively reduced.

[0065] In some specific embodiments, the material iron removal device 100 includes a control cabinet 9, a control module 5 disposed within the control cabinet 9, and a second detection module 8 installed within the control cabinet 9 and located on the power supply line of the drive motor 3. The measurement range of the second detection module 8 is 0-10A (accuracy ±0.01A). A motor current-load torque calibration curve is pre-established in the control module 5 (e.g., a current of 1A corresponds to a load of 5 N•m, and a current of 3A corresponds to a load of 25 N•m).

[0066] The power supply line for drive motor 3 provides electrical energy to drive motor 3. When drive motor 3 is running, current flows through the power supply line to power drive motor 3. The second detection module 8 is installed on the power supply line and can collect the current magnitude of drive motor 3 in real time during operation. By monitoring the current on the power supply line, the operating status information of drive motor 3 can be obtained. For example, when the load on drive motor 3 increases, the current in the power supply line will increase accordingly. The second detection module 8 can capture this change and convert it into an electrical signal, which is then transmitted to control module 5.

[0067] In this embodiment of the invention, the control module 5 and the second detection module 8 are both located inside the control cabinet 9, which facilitates installation and operation, and reduces the maintenance difficulty of the material iron removal device 100.

[0068] In some embodiments, the first detection module 4 is installed in the feed channel 11, and the height difference between it and the iron removal cavity 12 is a first set height.

[0069] The first set height can be 40cm, 50cm, 60cm or other sizes, and the present invention does not limit this.

[0070] By setting the height difference between the first detection module 4 and the iron removal chamber 12 as the first set height, the control module 5 can predict the risk of material blockage in advance, providing time for adjusting the speed of the drive motor 3.

[0071] In some embodiments, the first detection module 4 and the second detection module 8 are respectively connected to the control module 5 through shielded signal lines, which avoids magnetic field interference from the disk component 2 and ensures the reliability of information transmission.

[0072] For example, the shielded signal line is provided with a metal braided layer shielding structure or a metal foil shielding structure, but the present invention does not limit this.

[0073] In some embodiments, after the first detection module 4 and the second detection module 8 collect data, the analog signal is filtered (to suppress electromagnetic interference from the disk component 2), amplified (signal gain 100 times), and converted into a digital signal and transmitted to the control module 5. The control module 5 calls the pre-stored motor current-load torque calibration curve and converts the current signal into load data. The data update frequency is 10Hz to ensure that the regulation is lag-free.

[0074] In some embodiments, the material iron removal device 100 further includes an alerting device connected to the control module 5, which is configured to control the alerting device to issue an alarm signal under set conditions.

[0075] For example, when F C > When the second set flow rate F2 is reached, the speed of the drive motor 3 is controlled to the second speed V2. At this time, the speed of the drive motor 3 reaches the upper limit of normal iron removal operation, and the control module 5 controls the reminder device to issue an alarm signal.

[0076] The reminder device can be configured as a light reminder, a sound reminder, or a combination of light and sound reminders; this invention does not limit the scope of the invention.

[0077] In this embodiment of the invention, by setting a reminder device, the staff can be reminded that the material flow rate has reached the upper limit, avoiding excessive material flow and further reducing the risk of blockage of the material iron removal device 100.

[0078] In some embodiments, the disk assembly 2 includes a rotating shaft 21 and a plurality of iron cores 22. The rotating shaft 21 extends at least in the vertical direction. The drive motor 3 drives the rotating shaft 21 to rotate. The plurality of iron cores 22 are spaced apart on the rotating shaft 21 along the axial direction of the rotating shaft 21. The material passage area includes a through hole 221 provided in each iron core 22.

[0079] Specifically, the feed channel 11 is located above the iron removal chamber 12, and the discharge channel 13 is located below the iron removal chamber 12. After the material enters the iron removal chamber 12 through the feed channel 11, it passes through the through holes 221 of multiple iron cores 22 in sequence under the action of gravity, and is finally discharged through the discharge channel 13.

[0080] In this embodiment of the invention, the material needs to pass through multiple iron cores 22 in sequence, which effectively increases the contact area between the disk assembly 2 and the iron cores 22 and improves the iron removal efficiency.

[0081] In some embodiments, each core 22 includes a plurality of annular support portions 222, which are spaced apart in the radial direction of the rotation shaft 21. Adjacent annular support portions 222 are connected by a connecting portion 223, and a through hole 221 is defined between the connecting portion 223 and the annular support portions 222.

[0082] In this embodiment of the invention, the iron core 22 includes multiple annular support portions 222, which helps to improve the structural stability of the iron core 22 during rotation and reduces the risk of deformation of the iron core 22; adjacent annular support portions 222 are connected by a connecting portion 223, which further improves the overall strength of the iron core 22; a through hole 221 is defined between the connecting portion 223 and the annular support portions 222. In this embodiment of the invention, the through hole 221 is formed in a simple way, without the need for additional drilling, which reduces the cost of the iron core 22.

[0083] In some embodiments, the two ends of the connecting portion 223 are respectively connected to two annular support portions 222, and a plurality of connecting portions 223 between the two annular support portions 222 are connected end to end in sequence along the circumference of the rotating shaft 21.

[0084] Through the above technical solution, adjacent two circular ring support portions 222 are connected by multiple connecting portions 223, and the multiple connecting portions 223 are sequentially connected end to end along the circumference of the rotation axis 21, which effectively improves the overall strength of the iron core 22 and makes the arrangement of multiple through holes 221 in the circumference of the iron core 22 more uniform, which is conducive to the passage of materials and further reduces the risk of material blockage. In some embodiments, the two ends of the connecting portion 223 are respectively connected to two circular ring support portions 222, and the multiple connecting portions 223 between the two circular ring support portions 222 are distributed at intervals along the circumference of the rotation axis 21. The present invention does not limit the arrangement of these connecting portions 223. In other embodiments, the iron core 22 can also be a plate structure with multiple honeycomb-shaped through holes 221. The iron core 22 can also be other shapes, and the present invention does not limit them.

[0085] In some embodiments, two adjacent iron cores 22 are staggered in the circumferential direction of the rotating shaft 21, such that the connecting portion 223 of one iron core 22 is directly opposite the through hole 221 of the adjacent iron core 22. Adjacent iron cores 22 have no overlapping through holes 221 in the feeding direction, reducing dead zones in iron removal.

[0086] For example, two adjacent iron cores 22 are staggered at a first angle in the circumferential direction of the rotation shaft 21. The first angle can be 10°, 20°, 22.5°, 30° or other angles. The present invention does not limit this, as long as the connecting part 223 of one iron core 22 is directly opposite the through hole 221 of the adjacent iron core 22.

[0087] Through the above technical solution, multiple iron cores 22 are formed into a rotatable three-dimensional network. When powder material passes through the iron core 22, it needs to pass through this three-dimensional network. The material particles will come into contact with the network units of different dimensions, which greatly increases the effective contact area between the material particles per unit volume and the disk assembly 2, and effectively improves the iron removal efficiency.

[0088] In some embodiments, the rotating shaft 21 is provided with a gas channel adapted to connect to a gas pressure supply device, and the gas channel is provided with a plurality of air blowing holes 211 located on the peripheral wall of the rotating shaft 21.

[0089] When the material iron removal device 100 is performing material iron removal, the air pressure blown out of the air blowing hole 211 can disperse the material and improve the iron removal effect. In the iron discharge mode, within the first set time after the feed valve controls the feed channel 11 to close, the air pressure blown out of the air blowing hole 211 can further blow away the residual material inside the iron removal chamber 12, improving the functional stability of the material iron removal device 100 during continuous operation. In the iron discharge mode, when the disk assembly 2 is cleaning ferromagnetic impurities, the air pressure blown out of the air blowing hole 211 can powerfully clean the ferromagnetic impurities adhering to the disk assembly 2, reducing the impact of the ferromagnetic impurities adhering to the disk assembly 2 on the iron removal efficiency of the next cycle.

[0090] In some embodiments, the gas passage is connected to the gas supply device via a pressure valve, and the control module 5 is connected to the pressure valve to control the air pressure of the blowing hole 211.

[0091] For example, when F C When the first set flow rate F1 is reached, the speed of the drive motor 3 is controlled to be the first speed V1; when F... C > When the second set flow rate F2 is reached, the rotational speed of the drive motor 3 is controlled to be the second rotational speed V2, where F2 > F1 and V2 > V1; when F1 ≤ F C When F2 is less than or equal to 2, the speed of the drive motor 3 is controlled to be the third speed V3, then F C V3 satisfies 0 < (V3 - V1) / (F) C -F1)≤(V2-V1) / (F2-F1).

[0092] Furthermore, when the material iron removal device 100 is performing material iron removal, when F C When the third set flow rate F3 is ≤, the air pressure of the air blowing port 211 is controlled to be the first air pressure P1, where F1≤F3≤F2; when F C When the pressure is greater than F3, the air pressure of the blowing hole 211 is controlled to be the second air pressure P2, where P2 > P1.

[0093] This invention does not specify the first set flow rate F1, the second set flow rate F2, the first rotational speed V1, the second rotational speed V2, or (V3-V1) / (F). C-F1), the third set flow rate F3, the first air pressure P1, and the second air pressure P2 are limited to specific values, which are confirmed based on the equipment debugging results in specific application scenarios. For example, in some specific application scenarios, F1 is 50kg / h, F2 is 100kg / h, V1 is 5Hz, V2 is 15Hz, (V3-V1) / (F C The value of -F1) is 0.05, which means the flow rate F C For every 10 kg / h increase, the speed of drive motor 3 increases by 0.5 Hz, F3 is 80 kg / h, and the air pressure supply equipment can provide a pressure range of 0.1-0.7 MPa, P1 is 0.2 MPa, and P2 is 0.3 MPa.

[0094] Through the above technical solution, the air pressure value of the air blowing hole 211 can be dynamically adjusted together with the speed of the drive motor 3, which further improves the iron removal efficiency of the material iron removal device 100.

[0095] For example, in the iron removal mode, when T C When the first set torque T1 is reached, the speed of the drive motor 3 is controlled to the fourth speed V4, where V4 > V2, and the air pressure of the air blowing hole 211 is controlled to the third air pressure P3, where P3 > P2; when T C > When the second set torque T2 is reached, the speed of the drive motor 3 is controlled to the fifth speed V5, and the air pressure of the air blowing hole 211 is controlled to the fourth air pressure P4, where T2 > T1, V5 > V4, and P4 > P3; when T1 ≤ T C When T2 is less than or equal to T2, the speed of drive motor 3 is controlled to be the sixth speed V6, and T... C V6 satisfies 0 < (V6 - V4) / (T) C -T1)≤(V5-V4) / (T2-T1), and control the air pressure of the blowing hole 211 to the fifth air pressure P5, T C P5 satisfies (P5-P3) / T C >0.

[0096] Among them, the third air pressure P3 is the minimum air pressure in the iron removal mode. P3 > P2, indicating that the air pressure at the blowing hole 211 is higher in the iron removal mode than in the material iron removal mode, facilitating the removal of ferromagnetic impurities from the disk assembly. The fourth air pressure P4 is the maximum air pressure in the iron removal mode, typically the upper limit of the air pressure that the gas supply equipment can provide. (P5-P3) / T C >0 indicates that when T1≤T C When ≤T2, the fifth air pressure P5 and the load torque T C Positive correlation, T C The larger the pressure, the greater the fifth atmosphere pressure P5, which facilitates the removal of ferromagnetic impurities from the disk assembly.

[0097] This invention does not specify the first set torque T1, the second set torque T2, the fourth speed V4, the fifth speed V5, or (V6-V4) / (T). C -T1), third pressure P3, fourth pressure P4, and (P5-P3) / T C The specific values ​​are limited and confirmed based on the equipment's debugging results in specific application scenarios. For example, in some specific application scenarios, T1 is 20 N•m, T2 is 35 N•m, V4 is 20 Hz, V5 is 30 Hz, and (V6-V4) / (T C The value of -T1) is 0.3, which is the load torque T. C For every 5 N•m increase, the speed of drive motor 3 increases by 1.5 Hz, P3 becomes 0.4 MPa, P4 becomes 0.8 MPa, and (P5-P3) / T C The value is 0.01, which is the load torque T. C For every 5 N•m increase, the air pressure at the blowing port 211 increases by 0.05 MPa.

[0098] Through the above technical solution, the air pressure value of the air blowing hole 211 can be dynamically adjusted together with the speed of the drive motor 3, which further improves the iron removal efficiency of the material iron removal device 100 in the iron removal mode.

[0099] In some further embodiments, the pneumatic valve is configured as a pulse-controlled valve.

[0100] The above technical solution enables the air blowing hole 211 to emit pulsed air. By adjusting the air pressure and pulse frequency of the air blowing hole 211, the iron removal efficiency of the material iron removal device 100 and the iron discharge efficiency in the iron discharge mode are further improved.

[0101] In some embodiments, each iron core 22 is provided with air blowing holes 211 on both the upper and lower sides.

[0102] Through the above technical solution, when the material iron removal device 100 is performing material iron removal, the iron removal efficiency of each iron core 22 is further improved; in the iron discharge mode, the iron discharge efficiency of each iron core 22 is further improved.

[0103] In some embodiments, at least some of the air holes 211 are evenly arranged circumferentially along the rotation axis 21.

[0104] The above technical solution makes the air pressure in the circumferential direction of the rotating shaft 21 more uniform, further improving the iron removal efficiency of each iron core 22 and further reducing the risk of material blockage.

[0105] In some specific embodiments, the six air holes 211 are arranged as a group, and the six air holes 211 in a group are evenly arranged along the circumference of the rotation axis 21. Each iron core 22 has a group of air holes 211 on both the upper and lower sides.

[0106] In other embodiments, the number of air holes 211 may be grouped into 7, 8 or other numbers, and the present invention does not limit this.

[0107] In some specific embodiments, the diameter of the air blowing hole 211 is 1 mm. In other embodiments, the diameter of the air blowing hole 211 can also be other sizes such as 0.8 mm, 1.2 mm, 1.5 mm, etc. The present invention does not limit this.

[0108] In some embodiments, the drive motor 3 is configured to receive a PWM signal to adjust the speed (accuracy ±0.1Hz), and the pneumatic valve is configured to receive a 4-20mA signal to adjust the pneumatic pressure (accuracy ±0.01MPa), thereby improving control accuracy.

[0109] According to the control method of the material iron removal device 100 of the present invention, the material iron removal device 100 is the material iron removal device 100 in the above technical solution. The material iron removal device 100 includes a second detection module 8, which is used to detect the load condition of the drive motor 3. The second detection module 8 is communicatively connected to the control module 5. The control method includes: The first detection module 4 controls the flow rate F of the material in the material channel. C The disk assembly 2 adsorbs ferromagnetic impurities from the material and adjusts the speed of the drive motor 3 in real time based on the detection results of the first detection module 4. After the second set time period, the feeding channel 11 is stopped, the ferromagnetic impurities on the disk assembly 2 are detached, and the speed of the drive motor 3 is adjusted in real time according to the detection results of the second detection module 8.

[0110] It should be noted that the embodiments of the present invention do not limit the specific value of the second set duration, but rather confirm it based on the debugging results of the device in specific application scenarios. For example, in some specific application scenarios, the second set duration is 2 hours.

[0111] Through the above technical solution, when the material iron removal device 100 is performing material iron removal, it can automatically switch to the iron discharge mode after a second set time, without the need for the operator to manually start the iron discharge mode, which effectively improves the intelligence of the material iron removal device 100.

[0112] In some further embodiments, the material iron removal device 100 can automatically switch to the material iron removal mode after operating in the iron discharge mode for a certain period of time.

[0113] It should be noted that the embodiments of the present invention do not limit the specific value of a particular duration, which should be determined based on the debugging results of the device in specific application scenarios. For example, in some specific application scenarios, the specific duration is 5 minutes.

[0114] Through the above technical solution, the material iron removal device 100 can automatically switch to the material iron removal mode after running in the iron discharge mode for a certain period of time, without the need for staff to manually start the material iron removal mode. This allows the material iron removal device 100 to work continuously and periodically, effectively improving the intelligence of the material iron removal device 100 and increasing its production capacity.

[0115] In some embodiments, when the detected traffic F C If the change in load within a third set time period is greater than the first set value; and / or, if the change in load on drive motor 3 within a fourth set time period is greater than the second set value; control drive motor 3 to switch its speed to the first set speed.

[0116] This invention does not impose specific limits on the third set duration, the first set value, the fourth set duration, the second set value, and the first set rotational speed; these values ​​are determined based on the equipment's debugging results in specific application scenarios. For example, in some specific application scenarios, the third set duration is 1 second, and the first set value is 50%, i.e., the flow rate F... C The load decreases by 50% within 1 second; the fourth setting duration is 1 second, the second setting value is 30%, that is, the motor load increases by 30% within 1 second, and the first setting speed is 12Hz.

[0117] In other application scenarios, the third set duration can also be 0.1s, 0.05s, 0.01s, or other durations; the first set value can also be 30%, 40%, 60%, or other values; the fourth set duration can also be 0.1s, 0.05s, 0.01s, or other durations; the first set value can also be 40%, 50%, 60%, or other values; and the first set rotation speed can also be 15Hz, 18Hz, 20Hz, or other rotation speeds. This invention does not impose any limitations on these settings.

[0118] The above technical solution enables the first detection module 4 and / or the second detection module 8 to trigger an emergency evacuation mode when they detect abnormal data, thereby switching the speed of the drive motor 3 to the first set speed and reducing the risk of material blockage.

[0119] In some further embodiments, after controlling the drive motor 3 to operate at a first set speed for a fifth set time, when the flow rate F is detected... C Satisfying F1≤F C If the speed of the drive motor 3 is ≤F2, then the speed of the drive motor 3 will be switched to the second set speed; when the material flow rate F is detected... C If <F1, the machine will stop and an alarm will sound.

[0120] It should be noted that the second set rotation speed refers to the flow rate F when the material is in iron removal mode. C Satisfying F1≤F CRotational speed ≤ F2. In some embodiments, flow rate F during material iron removal mode. C Satisfying F1≤F C When F2 is ≤, the second set rotational speed is a fixed value. In other embodiments, the flow rate F is [not specified] in the material iron removal mode. C Satisfying F1≤F C When F2 is less than or equal to 2, the second set speed is the third speed V3, (V3-V1) / (F2). C -F1) > 0.

[0121] This invention does not impose a specific value on the fifth set duration; it is determined based on the device's debugging results in specific application scenarios. For example, in some specific application scenarios, the fifth set duration is 3 minutes.

[0122] In other words, after controlling the drive motor 3 to operate at the first set speed for the fifth set time, when the flow rate F is detected... C Satisfying F1≤F C When the flow rate is ≤F2, it indicates that the material flow rate has returned to normal, meaning that the drive motor 3 is operating normally in the material iron removal mode. When the material flow rate F is detected... C <F1 indicates that the material flow rate has not returned to normal, so a shutdown alarm will be triggered to prevent damage to the material removal device.

[0123] In some embodiments, the disk assembly 2 includes a rotating shaft 21 and a plurality of iron cores 22. The rotating shaft 21 extends at least in the vertical direction. A drive motor 3 drives the rotating shaft 21 to rotate. The plurality of iron cores 22 are spaced apart on the rotating shaft 21 along the axial direction of the rotating shaft 21. The material passage area includes a through hole 221 provided in each iron core 22. The rotating shaft 21 is provided with a gas channel adapted to connect to a gas pressure supply device. The gas channel is provided with a plurality of air blowing holes 211 located on the peripheral wall of the rotating shaft 21. The gas channel is connected to the gas pressure supply device through a gas pressure valve. A control module 5 is connected to the gas pressure valve to control the air pressure of the air blowing holes 211.

[0124] When the flow rate F is detected C The change in load of drive motor 3 within a third set time period is greater than the first set value; and / or, the change in load of drive motor 3 within a fourth set time period is greater than the second set value; the speed of drive motor 3 is controlled to switch to the first set speed, and the air pressure of air blowing hole 211 is controlled to the first set air pressure.

[0125] The first set air pressure can be a value such as 0.5MPa, 0.7MPa, or 0.8MPa, and the present invention does not limit it to this value.

[0126] In this embodiment of the invention, the air pressure of the air blowing hole 211 can be matched with the rotation speed of the drive motor 3 for emergency drainage, which improves the drainage effect and further reduces the risk of material blockage.

[0127] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0128] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A material iron removal device (100), characterized in that, include: The outer casing (1) defines a feeding channel (11), an iron removal cavity (12), and a discharge channel (13), wherein the feeding channel (11) and the discharge channel (13) are respectively connected to the iron removal cavity (12); The disk assembly (2) is rotatably disposed in the iron removal cavity (12). The disk assembly (2) is used to absorb ferromagnetic impurities in the material. The disk assembly (2) is provided with a material passage area for the material to pass through. A drive motor (3) is connected to the disk assembly (2) to drive the disk assembly (2) to rotate; The first detection module (4) is used to detect the flow rate F of the material in the feed channel (11). C ; The control module (5) is connected to the first detection module (4) and the drive motor (3) respectively. The control module (5) is configured to control the speed of the drive motor (3) according to the flow information obtained by the first detection module (4).

2. The material iron removal device (100) according to claim 1, characterized in that, The disk assembly (2) can be energized to adsorb ferromagnetic impurities, and the material iron removal device (100) has an iron removal mode in which the disk assembly (2) is de-energized.

3. The material iron removal device (100) according to claim 2, characterized in that, The outer shell (1) further defines an iron discharge channel (14) located below the iron removal chamber (12). The material iron removal device (100) is also provided with a switching valve (6). The switching valve (6) has a switchable first state and a second state. In the first state, the discharge channel (13) is connected to the iron removal chamber (12) and the iron discharge channel (14) is closed. In the second state, the iron discharge channel (14) is connected to the iron removal chamber (12) and the discharge channel (13) is closed. And / or, the housing (1) further includes a feed valve that controls the opening and closing of the feed channel (11), wherein in the iron discharge mode, the feed valve controls the feed channel (11) to close.

4. The material iron removal device (100) according to claim 2, characterized in that, Also includes: The second detection module (8) is used to detect the load of the drive motor (3). The second detection module (8) is connected to the control module (5) in communication. In the iron removal mode, the control module (5) controls the speed of the drive motor (3) according to the data detected by the second detection module (8). Preferably, the second detection module (8) is configured to detect the current of the drive motor (3).

5. The material iron removal device (100) according to claim 1, characterized in that, The material iron removal device (100) also includes an alarm device connected to the control module (5), which is configured to control the alarm device to issue an alarm signal under set conditions.

6. The material iron removal device (100) according to any one of claims 1-5, characterized in that, The disk component (2) includes: A rotating shaft (21) extends at least in the vertical direction, and the drive motor (3) drives the rotating shaft (21) to rotate; Multiple iron cores (22) are spaced apart along the axial direction of the rotating shaft (21), and the material passage area includes a through hole (221) provided in each iron core (22).

7. The material iron removal device (100) according to claim 6, characterized in that, Each of the iron cores (22) includes a plurality of annular support portions (222), which are spaced apart in the radial direction of the rotating shaft (21); The two adjacent annular support portions (222) are connected by a connecting portion (223), and the connecting portion (223) and the annular support portion (222) define the through hole (221).

8. The material iron removal device (100) according to claim 7, characterized in that, Two adjacent iron cores (22) are offset in the circumferential direction of the rotating shaft (21) so that the connecting part (223) of one iron core (22) is directly opposite the through hole (221) of the adjacent iron core (22).

9. The material iron removal device (100) according to claim 6, characterized in that, The rotating shaft (21) is provided with a gas channel, which is adapted to connect to a gas pressure supply device. The gas channel is provided with a plurality of air blowing holes (211) located on the peripheral wall of the rotating shaft (21).

10. The material iron removal device (100) according to claim 9, characterized in that, Each of the iron cores (22) is provided with air holes (211) on both the upper and lower sides; and / or At least some of the air holes (211) are evenly arranged circumferentially along the rotation axis (21); and / or The gas channel is connected to the gas supply device via a gas pressure valve, and the control module (5) is connected to the gas pressure valve to control the gas pressure of the blowing hole (211).

11. A control method for a material iron removal device (100), characterized in that, The material iron removal device (100) is the material iron removal device (100) according to any one of claims 1-10. The material iron removal device (100) includes a second detection module (8), which is used to detect the load of the drive motor (3). The second detection module (8) is communicatively connected to the control module (5). The control method includes: The first detection module (4) controls the flow rate F of the material in the material channel. C The disk assembly (2) adsorbs ferromagnetic impurities from the material and adjusts the rotation speed of the drive motor (3) in real time according to the detection results of the first detection module (4). After a second set time period, the feeding channel (11) is controlled to stop feeding, the ferromagnetic impurities on the disk assembly (2) are controlled to fall off, and the speed of the drive motor (3) is adjusted in real time according to the detection result of the second detection module (8).

12. The control method for the material iron removal device (100) according to claim 11, characterized in that, When the flow rate F is detected C The change in load within a third set time period is greater than the first set value; and / or the change in load of the drive motor (3) within a fourth set time period is greater than the second set value; The speed of the drive motor (3) is switched to the first set speed.

13. The control method for the material iron removal device (100) according to claim 12, characterized in that, After controlling the drive motor (3) to move at a first set speed for a fifth set time, When traffic F is detected C Satisfying F1≤F C If ≤F2, then switch the speed of the drive motor (3) to the second set speed; When the material flow rate F is detected C If <F1, the machine will stop and an alarm will sound.

Images