Electromagnetic shaker head

Abstract

The present application relates to the technical field of mineral processing machinery equipment, and particularly relates to an electromagnetic table head of a shaking table, and aims to provide an electromagnetic table head of a shaking table, which comprises a shell, an electromagnetic part, a moving iron part and an intelligent control part, the electromagnetic part and the moving iron part are arranged in the shell, and the intelligent control part is connected with the electromagnetic part, the reciprocating motion speed and acceleration of the shaking table are controllable, and the difference speed of motion in two directions is controllable. The carrying effect of the shaking table surface can be enhanced, and the processing capacity of the shaking table is improved. The layering, zoning and separation effects of minerals on the shaking table surface are improved. The stroke of the shaking table is convenient to adjust, the frequency is convenient to adjust, the shaking table is intelligent and has high automation, the intelligent controller can intelligently calculate and control the current size and on-off time of two electromagnetic coils according to the measurement and feedback of the displacement meter. When the load of the equipment changes, the intelligent controller can adjust the control according to the change of the load.

Description

Technical Field

[0001] This invention relates to the technical field of mineral processing machinery and equipment, and in particular to an electromagnetic shaking table head. Background Technology

[0002] In mineral processing, shaking tables are often used to separate fine-particle ores. This involves separating the metals from impurities by vibrating the slurry on the table's surface, based on the difference in specific gravity between the metallic minerals and impurities, thus separating the usable metallic minerals. Generally, a shaking table consists of three main parts: the table body, the frame, and the transmission mechanism. The shaking table allows mineral particles to move in different directions according to their specific gravity and particle size, spreading out diagonally from the feed trough and discharging sequentially along the edges of the table body. The discharge line is long, producing various grades of products, such as concentrate, secondary concentrate, middlings concentrate, and tailings.

[0003] Existing shaking tables are mainly classified into: the 6-S type with an eccentric connecting rod headstock; the Yunnan Tin shaking table with a cam lever headstock; and spring shaking tables and centrifugal shaking tables that use hard and soft springs to create differential motion. Although there have been improvements in the bed structure, bed material, and slope adjustment mechanism, improvements to the core component that enables the reciprocating differential motion of the shaking table are minimal. Many experts and scholars have conducted extensive research on the implementation of reciprocating differential motion in shaking tables. Significant progress has been made in the research of hydraulically driven headstocks. Compared to existing 6S headstocks, Yunnan Tin headstocks, and spring shaking table headstocks, hydraulic headstocks offer a larger reciprocating differential motion amplitude, which is beneficial for mineral sorting. However, the longer response time of hydraulic components limits the frequency of the shaking table, thus restricting further improvements in the processing capacity and sorting performance. How to provide a shaking table headstock with a short response time, high control precision, and the ability to overcome the inconvenience of frequency and stroke adjustment and the small difference in reciprocating speed of traditional shaking tables is an urgent problem to be solved at present. Summary of the Invention

[0004] The purpose of this invention is to provide an electromagnetic rocking bed head, which includes a housing, an electromagnetic part, a moving iron part, and an intelligent control part. The electromagnetic part and the moving iron part are disposed inside the housing, and the intelligent control part is connected to the electromagnetic part.

[0005] The electromagnetic part includes a first electromagnetic cavity and a second electromagnetic cavity. An electronic displacement meter is provided between the first electromagnetic cavity and the second electromagnetic cavity. Both the first electromagnetic cavity and the second electromagnetic cavity include an electromagnetic coil cavity and a moving iron displacement cavity. An electromagnetic coil is provided in each electromagnetic coil cavity. The number of turns of the electromagnetic coil in the first electromagnetic cavity and the second electromagnetic cavity are different. A moving iron connector is provided at the outer end of the moving iron displacement cavity of the first electromagnetic cavity and the moving iron displacement cavity of the second electromagnetic cavity. The moving iron connector is coaxially sleeved on the moving iron part.

[0006] The moving iron part includes a non-magnetic moving iron rod and a frustum-shaped iron core assembly. The frustum-shaped iron core assembly is fixedly connected to the non-magnetic moving iron rod. The two ends of the non-magnetic moving iron rod connect to the first electromagnetic cavity and the second electromagnetic cavity and then pass through the housing. The two ends of the non-magnetic moving iron rod are hinged to the rocker bed surface via telescopic rods. The frustum-shaped iron core assembly includes a first iron core and a second iron core, which are mirror-symmetrically distributed at both ends of the non-magnetic moving iron rod. The first iron core and the second iron core are respectively disposed in the first electromagnetic cavity and the second electromagnetic cavity, and the first iron core and the second iron core are of different sizes.

[0007] Furthermore, the electronic displacement gauge is connected to the center of the non-magnetic moving iron rod to measure the displacement distance of the non-magnetic moving iron rod.

[0008] Furthermore, the moving iron part connector includes a linear bearing and a frustum-shaped iron core blocking part. The linear bearing is inserted into the frustum-shaped iron core blocking part and fixedly connected by fixing bolts. The linear bearing is coaxially sleeved on the non-magnetic moving iron rod.

[0009] Furthermore, the first iron core and the second iron core both face the frustum-shaped iron core blocking part, and the frustum-shaped iron core blocking part is provided with a frustum-shaped groove.

[0010] Furthermore, both ends of the non-magnetic moving iron rod are threadedly connected to the telescopic rod, and the telescopic rod is hinged to the rocker bed surface through a hinge flange.

[0011] Furthermore, to reduce the coil inductance, the electromagnetic coil is wound using a parallel winding method.

[0012] Furthermore, the intelligent control unit includes an intelligent controller and a power supply. The intelligent controller is connected to the electromagnetic coil and the electronic displacement meter, and controls the current in the electromagnetic coil by receiving displacement information from the electronic displacement meter.

[0013] The advantages of this invention are:

[0014] (1) The reciprocating speed and acceleration of the shaking table of the present invention are controllable, and the differential speed of the two directions of motion is controllable. This can enhance the conveying effect of the shaking table surface and improve the processing capacity of the shaking table. It can also improve the stratification, zoning and sorting effect of minerals on the shaking table surface.

[0015] (2) The stroke of the shaker of the present invention is easy to adjust. The stroke of the shaker can be adjusted simply by setting the displacement meter parameters of the coil switching on and off.

[0016] (3) The frequency of the present invention is easy to adjust. With the stroke unchanged, the reciprocating frequency of the moving iron part can be adjusted by adjusting the current in the electromagnetic coil.

[0017] (4) The shaking table of the present invention has a high degree of intelligence and automation. The intelligent controller can intelligently calculate and control the current magnitude and switching time of the two electromagnetic coils based on the measurement and feedback of the displacement gauge. When the equipment load changes, the intelligent controller will adjust the control according to the load change.

[0018] (5) The shaker of the present invention is directly driven by electromagnetic induction, which reduces energy loss caused by deceleration and unnecessary mechanical transmission, making it more energy-efficient. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of a section;

[0021] Figure 3 This is a side view of the present invention;

[0022] Figure 4 This is a structural diagram showing the connection between the present invention and the shaking table surface.

[0023] Drawing number

[0024] Housing (1), first electromagnetic cavity (2), second electromagnetic cavity (3), electronic displacement gauge (4), electromagnetic coil cavity (5), moving iron displacement cavity (6), electromagnetic coil (7), moving iron connector (8), non-magnetic moving iron rod (9), telescopic rod (10), rocker bed surface (11), first iron core (12), second iron core (13), linear bearing (14), frustum-shaped iron core blocking part (15), frustum-shaped groove (16), hinge flange (17), intelligent controller (18), power supply (19). Detailed Implementation

[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments and are only used to explain and help understand the present invention. They should not be construed as limiting the present invention.

[0026] The embodiments of the present invention are described in detail below, examples of which 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.

[0027] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] Example 1

[0031] like Figure 1-4 An electromagnetic rocking bed head is shown, comprising a housing 1, an electromagnetic part, a moving iron part, and an intelligent control part. The electromagnetic part and the moving iron part are disposed inside the housing 1, and the intelligent control part is connected to the electromagnetic part.

[0032] The electromagnetic part includes a first electromagnetic cavity 2 and a second electromagnetic cavity 3. An electronic displacement meter 4 is provided between the first electromagnetic cavity 2 and the second electromagnetic cavity 3. Both the first electromagnetic cavity 2 and the second electromagnetic cavity 3 include an electromagnetic coil cavity 5 and a moving iron displacement cavity 6. An electromagnetic coil 7 is provided in the electromagnetic coil cavity 5. The number of turns of the electromagnetic coil 7 in the first electromagnetic cavity 2 is less than the number of turns of the electromagnetic coil 7 in the second electromagnetic cavity 3. In order to reduce the coil inductance, the electromagnetic coil 7 adopts a parallel winding method. The moving iron displacement cavity 6 of the first electromagnetic cavity 2 and the moving iron displacement cavity 6 of the second electromagnetic cavity 3 are provided with moving iron connectors 8 at their outer ends. The moving iron connectors 8 are coaxially sleeved on the moving iron part.

[0033] The moving iron part includes a non-magnetic moving iron rod 9 and a frustum-shaped iron core assembly. The frustum-shaped iron core assembly is fixedly connected to the non-magnetic moving iron rod 9. The two ends of the non-magnetic moving iron rod 9 are connected to the first electromagnetic cavity 2 and the second electromagnetic cavity 3 and then pass through the housing 1. The two ends of the non-magnetic moving iron rod 9 are threadedly connected to the telescopic rod 10. The telescopic rod 10 is hinged to the rocker bed surface 11 through a hinge flange 17. The electronic displacement gauge 4 is connected to the center of the non-magnetic moving iron rod 9 to measure the displacement distance of the non-magnetic moving iron rod 9. The frustum-shaped iron core assembly includes a first iron core 12 and a second iron core 13. The first iron core 12 and the second iron core 13 are mirror-symmetrically distributed at both ends of the non-magnetic moving iron rod 9. The first iron core 12 and the second iron core 13 are respectively located in the first electromagnetic cavity 2 and the second electromagnetic cavity 3. The size of the first iron core 12 is smaller than that of the second iron core 13.

[0034] The moving iron part connector 8 includes a linear bearing 14 and a frustum-shaped iron core blocking part 15. The linear bearing 14 is inserted into the frustum-shaped iron core blocking part 15 and fixedly connected by fixing bolts. The linear bearing 14 is coaxially sleeved on the non-magnetic moving iron rod 9. The frustum-shaped surfaces of the first iron core 12 and the second iron core 13 both face the frustum-shaped iron core blocking part 15, and the frustum-shaped iron core blocking part 15 is provided with a frustum-shaped groove 16.

[0035] The intelligent control unit includes an intelligent controller 18 and a power supply 19. The intelligent controller 18 is connected to the electromagnetic coil 7 and the electronic displacement meter 4, and controls the current in the electromagnetic coil 7 by receiving displacement information from the electronic displacement meter 4.

[0036] In practice

[0037] This invention utilizes the principle of electromagnetic induction, employing two electromagnetic coils with a turns ratio of 3:8 (specifically, 1500 turns and 4000 turns respectively) to drive the moving iron part in reciprocating motion. The magnitude and switching time of the current in the electromagnetic coils are controlled by an intelligent controller. The current value is variable and automatically adjusted according to the load. The current at a frequency of 4.5 Hz is 0.45 A and 0.78 A, respectively. After mass production, the actual values ​​will be much higher than the experimental values. Because the current transmission speed is close to the speed of light, the response time of the electromagnetic induction system is also very short, approximately 5-10 ms, resulting in high control precision. This invention overcomes many shortcomings of traditional shaking tables, such as inconvenient frequency and stroke adjustment and small difference in reciprocating speed.

[0038] In this invention, the two frustum-shaped iron cores of the moving iron section are connected by a non-magnetic material. The resulting parameters of the first and second electromagnetic coils differ; by adjusting the magnitude of the current flowing through the two coils, the strength of the magnetic fields generated by the two coils can be easily adjusted. An intelligent controller alternately switches the current through the two coils, ensuring that the attractive force of the magnetic field generated by the first coil on the moving iron section is less than that generated by the second coil. This achieves the goal of the moving iron's acceleration when moving forward being less than its acceleration when moving backward, realizing the reciprocating differential motion of the moving iron section and the shaking table surface.

[0039] The electronic displacement gauge transmits the position information of the moving iron to the intelligent controller. By setting the displacement values ​​when the two coils are alternately switched on and off, the stroke of the moving iron and the bed surface can be set. By adjusting the magnitude of the current through the two electromagnetic coils, the magnitude of the reciprocating acceleration can be adjusted, and the frequency of the reciprocating motion is controlled accordingly.

[0040] Example 2

[0041] like Figure 1-4 An electromagnetic rocking bed head is shown, comprising a housing 1, an electromagnetic part, a moving iron part, and an intelligent control part. The electromagnetic part and the moving iron part are disposed inside the housing 1, and the intelligent control part is connected to the electromagnetic part.

[0042] The electromagnetic component includes a first electromagnetic cavity 2 and a second electromagnetic cavity 3. An electronic displacement meter 4 is disposed between the first electromagnetic cavity 2 and the second electromagnetic cavity 3. Both the first electromagnetic cavity 2 and the second electromagnetic cavity 3 include an electromagnetic coil cavity 5 and a moving iron displacement cavity 6. Each electromagnetic coil cavity 5 contains an electromagnetic coil 7. The number of turns of the electromagnetic coil 7 in the first electromagnetic cavity 2 is greater than the number of turns of the electromagnetic coil 7 in the second electromagnetic cavity 3. To reduce the coil inductance, the electromagnetic coil 7 is wound using a parallel winding method.

[0043] The first electromagnetic cavity 2, the moving iron part displacement cavity 6, and the second electromagnetic cavity 3, the moving iron part displacement cavity 6 are both provided with moving iron part connectors 8 at their outer ends, and the moving iron part connectors 8 are coaxially sleeved on the moving iron part.

[0044] The moving iron part includes a non-magnetic moving iron rod 9 and a frustum-shaped iron core assembly. The frustum-shaped iron core assembly is fixedly connected to the non-magnetic moving iron rod 9. The two ends of the non-magnetic moving iron rod 9 are connected to the first electromagnetic cavity 2 and the second electromagnetic cavity 3 and then pass through the housing 1. The two ends of the non-magnetic moving iron rod 9 are threadedly connected to the telescopic rod 10. The telescopic rod 10 is hinged to the rocker bed surface 11 through a hinge flange 17. The electronic displacement gauge 4 is connected to the center of the non-magnetic moving iron rod 9 to measure the displacement distance of the non-magnetic moving iron rod 9. The frustum-shaped iron core assembly includes a first iron core 12 and a second iron core 13. The first iron core 12 and the second iron core 13 are mirror-symmetrically distributed at both ends of the non-magnetic moving iron rod 9. The first iron core 12 and the second iron core 13 are respectively located in the first electromagnetic cavity 2 and the second electromagnetic cavity 3. The size of the first iron core 12 is larger than that of the second iron core 13.

[0045] The moving iron part connector 8 includes a linear bearing 14 and a frustum-shaped iron core blocking part 15. The linear bearing 14 is inserted into the frustum-shaped iron core blocking part 15 and fixedly connected by fixing bolts. The linear bearing 14 is coaxially sleeved on the non-magnetic moving iron rod 9. The frustum-shaped surfaces of the first iron core 12 and the second iron core 13 both face the frustum-shaped iron core blocking part 15, and the frustum-shaped iron core blocking part 15 is provided with a frustum-shaped groove 16.

[0046] The intelligent control unit includes an intelligent controller 18 and a power supply 19. The intelligent controller 18 is connected to the electromagnetic coil 7 and the electronic displacement meter 4, and controls the current in the electromagnetic coil 7 by receiving displacement information from the electronic displacement meter 4.

[0047] In practice

[0048] This invention utilizes the principle of electromagnetic induction, employing two electromagnetic coils with a turns ratio of 3:8 (specifically, 1500 turns and 4000 turns respectively) to drive the moving iron part in reciprocating motion. The magnitude and switching time of the current in the electromagnetic coils are controlled by an intelligent controller. The current value is variable and automatically adjusted according to the load. The current at a frequency of 4.5 Hz is 0.45 A and 0.78 A, respectively. After mass production, the actual values ​​will be much higher than the experimental values. Because the current transmission speed is close to the speed of light, the response time of the electromagnetic induction system is also very short, approximately 5-10 ms, resulting in high control precision. This invention overcomes many shortcomings of traditional shaking tables, such as inconvenient frequency and stroke adjustment and small difference in reciprocating speed.

[0049] In this invention, the two frustum-shaped iron cores of the moving iron section are connected by a non-magnetic material. The resulting parameters of the first and second electromagnetic coils differ; by adjusting the magnitude of the current flowing through the two coils, the strength of the magnetic fields generated by the two coils can be easily adjusted. An intelligent controller alternately switches the current through the two coils, ensuring that the attractive force of the magnetic field generated by the first coil on the moving iron section is greater than that generated by the second coil. This achieves the goal of ensuring that the acceleration of the moving iron when moving forward is greater than its acceleration when moving backward, thus realizing the reciprocating differential motion of the moving iron section and the shaking table surface.

[0050] The electronic displacement gauge transmits the position information of the moving iron to the intelligent controller. By setting the displacement values ​​when the two coils are alternately switched on and off, the stroke of the moving iron and the bed surface can be set. By adjusting the magnitude of the current through the two electromagnetic coils, the magnitude of the reciprocating acceleration can be adjusted, and the frequency of the reciprocating motion is controlled accordingly.

[0051] The embodiments of the present invention are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Simple combinations and changes are all within the protection scope of the present invention.

Claims

1. An electromagnetic rocking bed head, characterized in that: The electromagnetic rocking bed head includes a housing (1), an electromagnetic part, a moving iron part, and an intelligent control part. The electromagnetic part and the moving iron part are located inside the housing (1), and the intelligent control part is connected to the electromagnetic part. The electromagnetic part includes a first electromagnetic cavity (2) and a second electromagnetic cavity (3). An electronic displacement meter (4) is provided between the first electromagnetic cavity (2) and the second electromagnetic cavity (3). The first electromagnetic cavity (2) and the second electromagnetic cavity (3) each include an electromagnetic coil cavity (5) and a moving iron displacement cavity (6). An electromagnetic coil (7) is provided in the electromagnetic coil cavity (5). The number of turns of the electromagnetic coil (7) in the first electromagnetic cavity (2) and the second electromagnetic cavity (3) are different. A moving iron part connector (8) is provided at the outer end of the moving iron part displacement cavity (6) of the first electromagnetic cavity (2) and the moving iron part displacement cavity (6) of the second electromagnetic cavity (3). The moving iron part connector (8) is coaxially sleeved on the moving iron part. The moving iron part includes a non-magnetic moving iron rod (9) and a frustum-shaped iron core assembly. The frustum-shaped iron core assembly is fixedly connected to the non-magnetic moving iron rod (9). The two ends of the non-magnetic moving iron rod (9) are connected to the first electromagnetic cavity (2) and the second electromagnetic cavity (3) and then pass through the housing (1). The two ends of the non-magnetic moving iron rod (9) are hinged to the rocker bed surface (11) through a telescopic rod (10). The frustum-shaped iron core assembly includes a first iron core (12) and a second iron core (13). The first iron core (12) and the second iron core (13) are mirror-symmetrically distributed at both ends of the non-magnetic moving iron rod (9). The first iron core (12) and the second iron core (13) are respectively located in the first electromagnetic cavity (2) and the second electromagnetic cavity (3). The first iron core (12) and the second iron core (13) are different in size. The electronic displacement meter (4) is centrally connected to the non-magnetic moving iron rod (9) to measure the displacement distance of the non-magnetic moving iron rod (9); The intelligent control unit includes an intelligent controller (18) and a power supply (19). The intelligent controller (18) is connected to the electromagnetic coil (7) and the electronic displacement meter (4) and controls the current in the electromagnetic coil (7) by receiving displacement information from the electronic displacement meter (4).

2. The electromagnetic shaking bed head according to claim 1, characterized in that, The number of turns of the electromagnetic coil (7) in the first electromagnetic cavity (2) is less than the number of turns of the electromagnetic coil (7) in the second electromagnetic cavity (3), and the size of the first iron core (12) is less than the size of the second iron core (13).

3. The electromagnetic shaking bed head according to claim 1, characterized in that, The number of turns of the electromagnetic coil (7) in the first electromagnetic cavity (2) is greater than the number of turns of the electromagnetic coil (7) in the second electromagnetic cavity (3), and the size of the first iron core (12) is greater than the size of the second iron core (13).

4. The electromagnetic shaking bed head according to claim 1, characterized in that, The moving iron part connector (8) includes a linear bearing (14) and a frustum-shaped iron core blocking part (15). The linear bearing (14) is inserted into the frustum-shaped iron core blocking part (15) and fixedly connected by fixing bolts. The linear bearing (14) is coaxially sleeved on the non-magnetic moving iron rod (9).

5. The electromagnetic shaking bed head according to claim 4, characterized in that, The frustum surfaces of the first iron core (12) and the second iron core (13) are both facing the frustum-shaped iron core blocking part (15), and the frustum-shaped iron core blocking part (15) is provided with a frustum-shaped groove (16).

6. The electromagnetic shaking bed head according to claim 1, characterized in that, The two ends of the non-magnetic moving iron rod (9) are threadedly connected to the telescopic rod (10), and the telescopic rod (10) is hinged to the rocker bed surface (11) through the hinge flange (17).

7. The electromagnetic shaking bed head according to claim 1, characterized in that, To reduce the coil inductance, the electromagnetic coil (7) is wound in parallel.

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