Magnetically-driven double-geared roller crusher and control method thereof

Abstract

The invention relates to the technical field of crushers, and provides a magnetically-driven double-geared-roller crusher and a control method thereof.The magnetically-driven double-geared-roller crusher comprises a case and a geared roller, the geared roller is rotationally arranged in the case, and the geared roller comprises a fixed shaft arranged on the case; the plurality of silicon steel sheet assemblies are arranged on the fixed shaft at intervals, and each silicon steel sheet assembly is wound with an electromagnetic coil; the rotor roller is rotationally arranged on the outer side of the fixing shaft, the rotor roller and the fixing shaft are coaxially arranged, the silicon steel sheet assemblies are arranged in the rotor roller at intervals in the axis direction of the fixing shaft, and a plurality of containing grooves are formed in the inner wall of the rotor roller at intervals; each magnet block is placed in one placing groove, and the magnetic poles of the adjacent magnet blocks are opposite; and the crushing toothed plates are arranged in the circumferential direction of the outer wall of the rotor roller. According to the technical scheme, the problems that a crusher in the prior art is low in space utilization rate, relatively complex in mechanical structure, long in transmission chain, large in energy loss and multiple in fault point are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of crushers, and in particular to a magnetically driven double-toothed roller crusher and a control method thereof. Background Art

[0002] Conventional toothed roller crushers use a drive structure of motor-coupler-reducer-coupling-toothed roller. The effective working length of the crusher is only the length of the toothed roller part. The cumulative length from the motor to the coupling usually reaches or even exceeds half of the overall length. The space utilization rate is not high, and the mechanical structure is relatively complex, the transmission chain is long, the energy loss is large, and there are many failure points. Summary of the invention

[0003] The present invention provides a magnetic drive double-toothed roller crusher and a control method thereof, which solves the problems of low space utilization of the crusher in the related art, relatively complex mechanical structure, long transmission chain, large energy loss and many fault points.

[0004] The technical solution of the present invention is as follows: A magnetically driven double-toothed roller crusher comprises a chassis and a toothed roller, wherein the toothed roller is rotatably arranged in the chassis, and the toothed roller comprises: A fixed shaft is arranged on the chassis; There are a plurality of silicon steel sheet assemblies, which are arranged on the fixed shaft at intervals, and each of the silicon steel sheet assemblies is wound with an electromagnetic coil; A rotor drum is rotatably arranged outside the fixed shaft, the rotor drum is coaxially arranged with the fixed shaft, and a plurality of silicon steel sheet assemblies are arranged in the rotor drum at intervals along the axial direction of the fixed shaft, and a plurality of placement grooves are arranged at intervals on the inner wall of the rotor drum; There are a plurality of magnet blocks, each of which is placed in one of the placement slots, and the magnetic poles of adjacent magnet blocks are opposite; There are a plurality of crushing tooth plates, and the plurality of crushing tooth plates are arranged in an arranged manner on the circumference of the outer wall of the rotor drum.

[0005] Optionally, the silicon steel sheet assembly includes a plurality of stacked silicon steel sheets, each of the silicon steel sheets has a circular hole in the middle, and the silicon steel sheet is keyed to the fixed shaft via the circular hole.

[0006] Optionally, the silicon steel sheet has a plurality of contacts, and the electromagnetic coil is wound on the contacts; the electromagnetic coil has a plurality of contacts, and two contacts arranged at 180° on the same silicon steel sheet are wound around the same electromagnetic coil, and the winding directions are symmetrical; after the electromagnetic coil is energized, the two contacts arranged at 180° present the same magnetic pole direction.

[0007] Optionally, the magnet blocks are high-strength neodymium magnets, and the number of the magnet blocks is less than the number of the contacts.

[0008] Optionally, each silicon steel sheet is coated with insulating paint.

[0009] Optionally, also include: A rotating disc is rotatably sleeved on the fixed shaft, the rotating disc is detachably arranged on both end surfaces of the rotor drum, the rotating disc is a web-type structure, and the rotating disc has an air inlet; The fan blades are arranged on the rotating disk and are located in the chassis. After the rotating disk rotates, the fan blades are used to dissipate heat for the electromagnetic coil.

[0010] Optionally, also include: A junction box, arranged at the end of the fixed shaft; A bracket, disposed on the fixed shaft, and the bracket is located inside the rotating disc; A light curtain sensor is arranged on the bracket, and the light curtain sensor is electrically connected to the junction box; An annular grating encoding disk is arranged on the rotating disk. After the rotating disk rotates, the annular grating encoding disk cooperates with the light curtain sensor to calculate the position of the magnet block and the rotation speed and rotation direction of the rotor drum.

[0011] Optionally, the light curtain sensor is U-shaped, the light curtain sensor is arranged horizontally, the lower end of the light curtain sensor is the light emitting end, the lower end of the light curtain sensor is the receiving light curtain end, and the annular grating encoding disk is located close to the receiving light curtain end.

[0012] Optionally, also include: There are a plurality of positioning sleeves, and the plurality of positioning sleeves are arranged on the fixed shaft at intervals, and a silicon steel sheet assembly is fixedly arranged between every two adjacent positioning sleeves.

[0013] A control method for a magnetically driven double-toothed roller crusher comprises the following steps: Step 1: Set the crusher's rotation direction and speed on the human-machine interface; Step 2: Perform calculations based on the position and speed signals of the rotor drum fed back by the light curtain sensor; Step 3: The main controller controls the drive circuit to output a DC current through the IGBT component; Step 4: Control the magnitude and direction of the DC current of the crusher electromagnetic coil in real time through the main controller to control the rotation direction and speed of the crusher rotor drum.

[0014] The working principle and beneficial effects of the present invention are: In the present invention, the crushing tooth plate is assembled with the external rotor drum as a whole, and is designed as a driving device of the outer rotor and the inner stator. The segmented tooth plate is directly nested on the outer rotor drum to form a magnetically driven crushing roller without any intermediate transmission link. This not only improves the system reliability and energy efficiency, reduces the failure rate, and reduces the maintenance cost, but also realizes closed-loop control by equipping a dedicated control system, realizes stepless speed regulation of the double-tooth roller drive, reduces equipment wear, and extends service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0016] Figure 1 It is a schematic diagram of the internal structure of the chassis of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the toothed roller of the present invention; Figure 3 This is a schematic diagram of the internal structure of the gear roller of the present invention; Figure 4 for Figure 3 A partial enlarged view of the middle part; Figure 5 This is a diagram of the first state of the toothed roller of the present invention; Figure 6 This is a diagram of the second state of the gear roller of the present invention; Figure 7 A schematic diagram of the winding direction of the electromagnetic coil of the present invention; Figure 8 It is a schematic diagram of the crusher control process of the present invention.

[0017] In the figure: 1, chassis; 2, gear roller; 3, fixed shaft; 4, silicon steel sheet assembly; 41, silicon steel sheet; 401, round hole; 5, rotor drum; 6, crushing tooth plate; 7, placement slot; 8, magnet block; 9, electromagnetic coil; 10, contact; 11, rotating disk; 13, fan blade; 12, positioning sleeve; 14, junction box; 15, annular grating encoder disk; 16, bracket; 17, light curtain sensor; 1701, receiving light curtain end; 1702, light transmitting end. DETAILED DESCRIPTION In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0018] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0019] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] Reference Figure 1 to Figure 7 , which is an embodiment of the present invention, proposes a magnetic drive double-toothed roller crusher, including a chassis 1 and a toothed roller 2, the toothed roller 2 is rotatably arranged in the chassis 1, the toothed roller 2 includes a fixed shaft 3, and the fixed shaft 3 is arranged on the chassis 1; there are a plurality of silicon steel sheet assemblies 4, and the plurality of silicon steel sheet assemblies 4 are arranged on the fixed shaft 3 at intervals, and each silicon steel sheet assembly 4 is wound with an electromagnetic coil 9; a rotor drum 5 is rotatably arranged outside the fixed shaft 3, the rotor drum 5 is coaxially arranged with the fixed shaft 3, and a plurality of silicon steel sheet assemblies 4 are arranged in the rotor drum 5 along the axial direction of the fixed shaft 3 at intervals, and a plurality of placement grooves 7 are arranged on the inner wall of the rotor drum 5 at intervals; there are a plurality of magnet blocks 8, each magnet block 8 is placed in a placement groove 7, and the magnetic poles of adjacent magnet blocks 8 are opposite; there are a plurality of crushing tooth plates 6, and the plurality of crushing tooth plates 6 are arranged on the circumference of the outer wall of the rotor drum 5.

[0022] In the above scheme, the gear roller 2 is arranged inside the chassis 1 and connected to the chassis 1 through the fixed shaft 3 to realize the rotational installation of the gear roller 2 in the chassis 1. The fixed shaft 3 serves as a supporting component to provide an installation basis for the silicon steel sheet assembly 4, the rotor drum 5, etc. A plurality of silicon steel sheet assemblies 4 are installed on the fixed shaft 3 along the axial direction of the fixed shaft 3 and are located inside the rotor drum 5. An electromagnetic coil 9 is tightly wound on each silicon steel sheet assembly 4. The electromagnetic coil 9 is made of copper material and is used to generate a magnetic field to interact with the magnet block 8 in the rotor drum 5. The rotor drum 5 is made of austenitic stainless steel, and a plurality of placement grooves 7 are provided on its inner wall at intervals along the circumferential direction for placing the magnet blocks 8. The magnet blocks 8 are made of high-strength neodymium magnets, and are evenly distributed in several groups (for example, 8 groups) along the circumferential direction, and the magnetic poles of adjacent magnet blocks 8 are arranged in opposite directions. A number of crushing tooth plates 6 are arranged circumferentially on the outer side of the rotor drum 5. The crushing tooth plates 6 adopt a fan-shaped segmented tooth disc structure, for example, 8 pieces are evenly distributed along the circumferential direction, and are fixed on the rotor drum 5 by tightening bolts to form an effective part of the crushing work.

[0023] When the electromagnetic coil 9 is energized, a magnetic field is generated, which interacts with the magnetic field of the magnet block 8 in the rotor drum 5, thereby driving the rotor drum 5 to rotate, and then driving the crushing tooth plate 6 to crush the material.

[0024] The crushing tooth plate 6 is assembled with the external rotor drum 5 as a whole, and is designed as a driving device of the outer rotor and the inner stator. The fan-shaped segmented tooth plate is directly nested on the outer rotor drum 5 to form a direct-drive crushing roller without any intermediate transmission link. This not only improves the system reliability and energy efficiency, reduces the failure rate, and reduces the maintenance cost, but also realizes closed-loop control by equipping a dedicated control system, realizes stepless speed regulation of the double tooth roller 2 drive, reduces equipment wear, and extends service life.

[0025] Furthermore, the silicon steel sheet assembly 4 includes a plurality of stacked silicon steel sheets 41 , each of which has a circular hole 401 in the middle, and the silicon steel sheet 41 is key-connected to the fixed shaft 3 through the circular hole 401 .

[0026] In the above scheme, the silicon steel sheet assembly 4 is composed of a plurality of silicon steel sheets 41 stacked together, and a circular hole 401 is processed in the middle of each silicon steel sheet 41. During installation, the circular hole 401 is connected to the fixed shaft 3 through a key, so that the silicon steel sheet assembly 4 can be stably fixed on the fixed shaft 3, and remains relatively fixed during the rotation of the rotor drum 5, ensuring that the magnetic field generated by the electromagnetic coil 9 stably acts on the magnet block 8 in the rotor drum 5.

[0027] Furthermore, the silicon steel sheet 41 has a plurality of contacts 10, and the electromagnetic coil 9 is wound on the contacts 10; the electromagnetic coil 9 has a plurality of contacts 10 arranged at 180° on the same silicon steel sheet 41 are wound around the same electromagnetic coil 9, and the winding directions are symmetrical. After the electromagnetic coil 9 is energized, the two contacts 10 arranged at 180° present the same magnetic pole direction.

[0028] In the above scheme, a plurality of contacts 10 are arranged on the silicon steel sheet 41, and the electromagnetic coil 9 is wound on the contacts 10. Two contacts 10 arranged at 180 degrees on the same silicon steel sheet 41 (for example, the 0 o'clock direction and the 6 o'clock direction) are wound around the same electromagnetic coil 9, and the winding directions are symmetrical.

[0029] Magnetic pole state after power-on: When the electromagnetic coil 9 is powered on, the two contacts 10 arranged at 180° present the same magnetic pole direction. Taking the 0 o'clock direction and the 6 o'clock direction as an example, the magnetic pole directions are the same after power-on. Such a winding method can ensure that the required magnetic poles can be accurately generated when the current direction is controlled, thereby effectively driving the rotor drum 5 to rotate. Each silicon steel sheet 41 group has a total of 6 groups of coil windings (such as the contacts 10 in the directions of 0-6, 1-7, 2-8, 3-9, 4-10, and 5-11 respectively constitute the coil windings), and the rotation of the rotor drum 5 in different directions and speeds is achieved by controlling the current directions of different coil windings.

[0030] Furthermore, the magnet blocks 8 are high-strength neodymium magnets, and the number of the magnet blocks 8 is less than the number of the contacts 10 .

[0031] In the above solution, the number of magnet blocks 8 is less than the number of contacts 10, for example, the number of magnet blocks 8 is 8 and the number of contacts 10 is 12. When the rotor drum 5 rotates, at least four magnet blocks 8 are located between adjacent contacts 10 regardless of the state.

[0032] By applying opposite magnetic fields to the two groups of contacts 10 corresponding to the magnet blocks 8 located between adjacent contacts 10, the rotor can be driven to rotate. When the rotor permanent magnet is facing the stator contact 10, the coil of the contact 10 is temporarily closed. After the rotor permanent magnet rotates through the stator contact 10, the current of the coil of the contact 10 is immediately commutated to generate a magnetic field of the same polarity to repel further rotation of the permanent magnet. For example, when the rotor is at a certain position, according to the relative position relationship between the magnet block 8 and the contact 10, the current direction of the coil of the contact 10 is controlled to generate a suitable magnetic pole, driving the rotor to rotate clockwise or counterclockwise. Figure 2For example, when the crusher rotates clockwise at the position, since the directions of 0, 3, 6 and 9 are just opposite to the middle position of the magnet block 8, the coils at 0-6 and 3-9 are controlled not to generate current, and the DC current direction of the coils at 1-7 and 4-10 is controlled to generate S magnetic poles. The current direction at 2-8 and 5-11 is opposite to generate N magnetic poles, which can drive the rotor drum to rotate clockwise. When the rotor rotates a certain angle to reach the position such as Figure 6 When the state is reached, no magnet block 8 faces the contact. The control system controls the current direction of coil 9 at 0:00-6:00, 2:00-8:00, 3:00-9:00, 5:00-11:00 to generate N magnetic poles, and 1:00-7:00, 4:00-10:00 to generate S magnetic poles, driving the rotor drum 5 to further rotate clockwise. When the rotor drum 5 rotates a certain angle to reach the state as shown in FIG. Figure 5 In this state, since the directions of 1 o'clock, 7 o'clock, 4 o'clock and 10 o'clock are just opposite to the middle position of the magnet block 8, the coils at 1 o'clock-7 o'clock and 4 o'clock-10 o'clock are controlled not to generate current, and the DC current direction of the coils at 2 o'clock-8 o'clock and 5 o'clock-11 o'clock is controlled to generate S magnetic poles. The current direction at 0 o'clock-6 o'clock and 3 o'clock-9 o'clock is opposite to generate N magnetic poles, which can drive the rotor drum 5 to continue to rotate clockwise.

[0033] In summary, it is found that since the number of magnet blocks 8 is 8 and the number of contacts 10 is 12, there are at least 4 permanent magnets located between two adjacent contacts 10 in any state. Applying opposite magnetic fields to the two groups of contacts 10 can drag the rotor drum 5 to rotate. When the rotor magnet block 8 is facing the contact 10, the contact coil is temporarily closed. After the magnet block 8 rotates past the contact 10, the current of the contact 10 coil is immediately commutated to generate a magnetic field of the same polarity to repel the permanent magnet from further rotation. The same applies when the rotor drum 5 rotates counterclockwise.

[0034] Furthermore, each silicon steel sheet 41 is coated with insulating paint.

[0035] In the above scheme, before the silicon steel sheets 41 are stacked to form the silicon steel sheet assembly 4, insulating paint is evenly applied on each silicon steel sheet 41. The function of the insulating paint is to ensure that the silicon steel sheets 41 are insulated from each other, to prevent the current from being conducted between the silicon steel sheets 41 during the power-on process of the electromagnetic coil 9, to avoid unnecessary current loss and interference, to ensure that the magnetic field generated by each electromagnetic coil 9 is independent and stable, and thus to ensure the normal operation of the entire drive system.

[0036] Furthermore, it also includes a rotating disc 11, which is rotatably sleeved on the fixed shaft 3. The rotating disc 11 is detachably arranged on the two end surfaces of the rotor drum 5. The rotating disc 11 is a web-type structure, and the rotating disc 11 has an air inlet; the fan blades 13 are arranged on the rotating disc 11, and the fan blades 13 are located in the chassis 1. After the rotating disc 11 rotates, the fan blades 13 are used to dissipate heat for the electromagnetic coil 9.

[0037] In the above scheme, the rotating disc 11 adopts a web-type structure, is rotatably sleeved on the fixed shaft 3, and is detachably mounted on both end surfaces of the rotor drum 5. Its web-type structure is convenient for ventilation and is beneficial to internal heat dissipation.

[0038] The fan blades 13 are mounted on the rotating disc 11 and are located in the chassis 1. When the rotor drum 5 rotates, the rotating disc 11 is driven to rotate synchronously, thereby rotating the fan blades 13. During the rotation of the fan blades 13, the air in the chassis 1 forms a flow under the action of the fan blades 13, and the cold air flows through the heat-generating components such as the electromagnetic coil 9, taking away the heat, realizing the heat dissipation of the electromagnetic coil 9, ensuring that the equipment operates within the normal temperature range, and improving the reliability and service life of the equipment.

[0039] Furthermore, it also includes a junction box 14, which is arranged at the end of the fixed shaft 3; a bracket 16 is arranged on the fixed shaft 3, and the bracket 16 is located in the rotating disc 11; a light curtain sensor 17 is arranged on the bracket 16, and the light curtain sensor 17 is electrically connected to the junction box 14; an annular grating encoder disk 15 is arranged on the rotating disc 11, and after the rotating disc 11 rotates, the annular grating encoder disk 15 cooperates with the light curtain sensor 17 to calculate the position of the magnet block 8 and the rotation speed and rotation direction of the rotor drum 5.

[0040] In the above scheme, the junction box 14 is arranged at the end of the fixed shaft 3, and is used to connect and organize the cables of the electromagnetic coil 9, etc. The bracket 16 is fixedly mounted on the fixed shaft 3 and is located inside the rotating disc 11. The light curtain sensor 17 is mounted on the bracket 16, and is electrically connected to the junction box 14 through a cable to achieve signal transmission. The annular grating encoder disk 15 is mounted on the rotating disc 11 and rotates coaxially with the rotor drum 5. A threading hole is opened on the shaft of the fixed shaft 3, and the threading hole is parallel to the axial direction. The communication cable of the light curtain sensor 17 is led to the external junction box 14 through the threading hole.

[0041] When the rotor drum 5 rotates, the annular grating encoder disk 15 rotates accordingly. The light curtain sensor 17 monitors the rotation of the annular grating encoder disk 15 by emitting and receiving light, and calculates the position of the magnet block 8 and the speed and rotation direction of the rotor drum 5 according to the change of light. This information is transmitted to the control system through the junction box 14, providing data basis for the subsequent control of the operation of the crusher, and realizing precise control of the crusher.

[0042] Furthermore, the light curtain sensor 17 is U-shaped, arranged laterally, the lower end of the light curtain sensor 17 is a light emitting end 1702 , the lower end of the light curtain sensor 17 is a receiving light curtain end 1701 , and the annular grating encoder disk 15 is located near the receiving light curtain end 1701 .

[0043] In the above scheme, the light curtain sensor 17 is U-shaped and arranged horizontally, with the lower end being the light emitting end 1702 and the upper end being the receiving light curtain end 1701. The annular grating encoder disk 15 is located near the receiving light curtain end 1701. Such an arrangement can ensure that the light curtain sensor 17 can accurately receive the light change signal generated by the annular grating encoder disk 15 during the rotation process, avoid the influence of factors such as light diffraction on the accuracy of the signal, thereby accurately calculating the position of the magnet block 8 and the speed, rotation direction and other parameters of the rotor drum 5, and improving the accuracy and reliability of the entire control system.

[0044] Furthermore, it also includes a plurality of positioning sleeves 12 , which are arranged on the fixed shaft 3 at intervals, and a silicon steel sheet assembly 4 is fixedly arranged between every two adjacent positioning sleeves 12 .

[0045] In the above scheme, multiple positioning sleeves 12 are installed on the fixed shaft 3 at intervals, and a silicon steel sheet assembly 4 is fixedly installed between each two adjacent positioning sleeves 12. The function of the positioning sleeve 12 is to accurately locate the position of the silicon steel sheet assembly 4 on the fixed shaft 3 to ensure that the spacing between each silicon steel sheet assembly 4 meets the design requirements, thereby ensuring that the magnetic field generated by the electromagnetic coil 9 can effectively interact with the magnet block 8 in the rotor drum 5, and is also beneficial to the stability and balance of the entire gear roller 2 structure.

[0046] Reference Figure 8 , a control method for a magnetically driven double-toothed roller crusher, comprising the following steps: Step 1: Set the crusher rotation direction and speed through the human-machine interface. Specifically, the operator inputs the required gear roller rotation direction (clockwise or counterclockwise) and speed value through the human-machine interface, and the human-machine interface transmits these setting information to the main controller.

[0047] Step 2: Perform calculations based on the position and speed signals of the rotor drum 5 fed back by the light curtain sensor 17; Specifically, after receiving the position and speed signals of the rotor drum 5 fed back by the light curtain sensor 17 and processed by the signal processor, the main controller performs calculations based on the set rotation direction and speed and the current actual state of the rotor drum 5. For example, based on the relative position relationship between the magnet block 8 and the contact 10 and the current speed of the rotor drum 5, the magnitude and direction of the current of the electromagnetic coil 9 that needs to be adjusted are calculated.

[0048] Step 3: The main controller controls the drive circuit to output DC current through the IGBT component; specifically, the main controller controls the drive circuit according to the calculation result, and the drive circuit outputs the corresponding DC current through the IGBT component. As a power switching element, the IGBT component can quickly and accurately control the on / off and size of the current.

[0049] Step 4: Control the rotation direction and speed of the crusher rotor drum 5 by controlling the magnitude and direction of the DC current of the crusher electromagnetic coil 9 in real time through the main controller. Specifically, the output DC current enters the electromagnetic coil 9, and by controlling the magnitude and direction of the DC current of the electromagnetic coil 9 in real time, a suitable magnetic field is generated to interact with the magnet block 8 in the rotor drum 5, thereby accurately controlling the rotation direction and speed of the crusher rotor drum 5, so that it can operate according to the requirements set by the human-machine interface, and achieve effective crushing of the material. For example, when acceleration is required, the magnitude of the current of the electromagnetic coil 9 is increased; when the direction of rotation needs to be changed, the current direction of the corresponding electromagnetic coil 9 is changed. During the whole process, the light curtain sensor 17 continuously monitors the state of the rotor drum 5, and feeds back the real-time signal to the main controller to form a closed-loop control to ensure the stability and accuracy of the crusher operation. It should be noted that the rotor drum 5 of the present invention can be referred to as a rotor, and the silicon steel sheet assembly 4, the electromagnetic coil 9 and the fixed shaft can be referred to as a stator after being combined.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A magnetically driven double-toothed roller crusher, comprising a housing (1) and a toothed roller (2), wherein the toothed roller (2) is rotatably arranged in the housing (1), and characterized in that: The toothed roller (2) comprises: A fixed shaft (3) is arranged on the chassis (1); A plurality of silicon steel sheet assemblies (4), wherein the plurality of silicon steel sheet assemblies (4) are arranged at intervals on the fixed shaft (3), and an electromagnetic coil (9) is wound around each of the silicon steel sheet assemblies (4); A rotor drum (5) is rotatably arranged outside the fixed shaft (3), the rotor drum (5) and the fixed shaft (3) are coaxially arranged, and a plurality of silicon steel sheet assemblies (4) are arranged in the rotor drum (5) at intervals along the axial direction of the fixed shaft (3), and a plurality of placement grooves (7) are arranged at intervals on the inner wall of the rotor drum (5); There are a plurality of magnet blocks (8), each of which is placed in one of the placement slots (7), and the magnetic poles of adjacent magnet blocks (8) are opposite; There are a plurality of crushing tooth plates (6), and the plurality of crushing tooth plates (6) are arranged in an arranged manner in the circumferential direction of the outer wall of the rotor drum (5).

2. A magnetically driven double-toothed roller crusher according to claim 1, characterized in that: The silicon steel sheet assembly (4) comprises a plurality of silicon steel sheets (41) stacked together, each silicon steel sheet (41) having a circular hole (401) in the middle, and the silicon steel sheet (41) is key-connected to the fixed shaft (3) via the circular hole (401).

3. A magnetically driven double-toothed roller crusher according to claim 1, characterized in that: The silicon steel sheet (41) has a plurality of contacts (10), and the electromagnetic coil (9) is wound on the contacts (10); the electromagnetic coil (9) has a plurality of contacts (10) arranged at 180 degrees on the same silicon steel sheet (41) and wound around the same electromagnetic coil (9), and the winding directions are symmetrical; after the electromagnetic coil (9) is energized, the two contacts (10) arranged at 180 degrees present the same magnetic pole direction.

4. A magnetically driven double-toothed roller crusher according to claim 3, characterized in that: The magnet blocks (8) are high-strength neodymium magnets, and the number of the magnet blocks (8) is less than the number of the contacts (10).

5. The magnetic drive double-toothed roller crusher according to claim 1, characterized in that: Each silicon steel sheet (41) is coated with insulating paint.

6. The magnetic drive double-toothed roller crusher according to claim 1, characterized in that: Also includes: A rotating disc (11) is rotatably sleeved on the fixed shaft (3); the rotating disc (11) is detachably arranged on the two end surfaces of the rotor drum (5); the rotating disc (11) is a web-type structure; and the rotating disc (11) has an air inlet; The fan blades (13) are arranged on the rotating disk (11), and the fan blades (13) are located in the chassis (1). After the rotating disk (11) rotates, the fan blades (13) are used to dissipate heat from the electromagnetic coil (9).

7. A magnetically driven double-toothed roller crusher according to claim 6, characterized in that: Also includes: A junction box (14) is arranged at the end of the fixed shaft (3); A bracket (16) is arranged on the fixed shaft (3), and the bracket (16) is located inside the rotating disc (11); A light curtain sensor (17) is arranged on the bracket (16), and the light curtain sensor (17) is electrically connected to the junction box (14); An annular grating encoding disk (15) is arranged on the rotating disk (11). After the rotating disk (11) rotates, the annular grating encoding disk (15) cooperates with the light curtain sensor (17) to calculate the position of the magnet block (8) and the rotation speed and rotation direction of the rotor drum (5).

8. The magnetically driven double-toothed roller crusher according to claim 7, characterized in that: The light curtain sensor (17) is U-shaped, the light curtain sensor (17) is arranged transversely, the lower end of the light curtain sensor (17) is a light emitting end (1702), the lower end of the light curtain sensor (17) is a receiving light curtain end (1701), and the annular grating encoding disk (15) is located close to the receiving light curtain end (1701).

9. The magnetic drive double-toothed roller crusher according to claim 1, characterized in that: Also includes: There are a plurality of positioning sleeves (12), wherein the plurality of positioning sleeves (12) are arranged at intervals on the fixed shaft (3), and a silicon steel sheet assembly (4) is fixedly arranged between every two adjacent positioning sleeves (12).

10. A control method for a magnetically driven double-toothed roller crusher, applied to a magnetically driven double-toothed roller crusher as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Set the crusher's rotation direction and speed on the human-machine interface; Step 2, performing calculations based on the position and speed signals of the rotor drum (5) fed back by the light curtain sensor (17); Step 3: The main controller controls the drive circuit to output a DC current through the IGBT component; Step 4: The main controller controls the magnitude and direction of the DC current of the crusher electromagnetic coil (9) in real time to control the rotation direction and speed of the crusher rotor drum (5).

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