Electromagnetic vibrator

Abstract

The invention relates to the technical field of vibrators, in particular to an electromagnetic vibrator. Comprising a shell, a magnetic conductive iron core is fixed on the shell, a wire slot is formed in the magnetic conductive iron core, and the magnetic conductive iron core is divided into a plurality of magnetic pole iron cores; an A-phase excitation coil and a B-phase excitation coil are sequentially wound on the magnetic pole iron core in a staggered mode. The A-phase excitation coil and the B-phase excitation coil are alternately connected with directional current through diodes in opposite directions so as to alternately generate induction magnetic poles, and N poles and S poles of the induction magnetic poles are distributed in a staggered mode. A vibrator iron core is arranged on one side of the induction magnetic pole, permanent magnets are embedded in the vibrator iron core, the number of the permanent magnets is the same as that of the magnetic pole iron cores wound by the excitation coils of each phase, and N poles and S poles of the permanent magnets are distributed in a staggered mode; the two ends of the vibrator iron core are supported through bearings, the bearings are installed on end covers, and the end covers are fixedly connected with the shell. The eccentric block electric vibrator overcomes the defects that an existing eccentric block electric vibrator is large in noise, fast in abrasion, low in efficiency and unstable in service life.

Description

Technical Field

[0001] This invention relates to the field of vibrator technology, and more particularly to an electromagnetic vibrator. Background Technology

[0002] Vibrators are a common production tool with many types, including electric, pneumatic, and hydraulic. Electric vibrators are the most common. The working principle of existing electric vibrators is to drive an eccentric block to rotate through a motor, thereby generating vibration. This type of vibrator is called an eccentric block vibrator. Under the excitation of the eccentric block, this type of vibrator has high noise, fast wear, low efficiency, and unstable service life. Summary of the Invention

[0003] This invention provides an electromagnetic vibrator that generates reciprocating vibration through electromagnetic action, overcoming the shortcomings of existing eccentric block electric vibrators, such as high noise, rapid wear, low efficiency, and unstable service life.

[0004] The technical solution adopted in this invention is as follows: an electromagnetic vibrator includes a housing, on which a magnetic core is fixed. The magnetic core has grooves that divide it into several magnetic pole cores. An A-phase excitation coil and a B-phase excitation coil are alternately wound on the magnetic pole cores. The A-phase and B-phase excitation coils are alternately connected to directional currents through diodes with opposite directions to generate induced magnetic poles alternately. The N and S poles of the induced magnetic poles are alternately distributed. A vibrator core is provided on one side of the induced magnetic poles. Permanent magnets are embedded in the vibrator core. The number of permanent magnets is the same as the number of magnetic pole cores wound on each phase excitation coil, and the N and S poles of the permanent magnets are alternately distributed. The vibrator cores are supported at both ends by bearings, which are mounted on end caps. The end caps are fixedly connected to the housing.

[0005] As a further improvement of the present invention, the magnetic core is formed by stacking silicon steel sheets.

[0006] As a further improvement of the present invention, the A-phase excitation coil and the B-phase excitation coil are connected to a single-phase AC power supply or a three-phase AC power supply through diodes.

[0007] As a further improvement of the present invention, when connected to a single-phase AC power supply, the front ends of the A-phase excitation coil and the B-phase excitation coil are connected together to the L terminal of the power supply, and the rear ends are connected together to the N terminal of the power supply, and diodes with opposite directions are connected in series respectively.

[0008] As a further improvement of the present invention, when a three-phase AC power supply is connected, one end of the A-phase excitation coil is connected to phase U1 via a forward diode, and the other end is combined with one end of the B-phase excitation coil and connected to phase U2. The other end of the B-phase excitation coil is connected to phase U3 via a reverse diode.

[0009] As a further improvement of the present invention, the housing is circular or square, and correspondingly, the oscillator core is arc-shaped or straight.

[0010] As a further improvement of the present invention, the permanent magnet and the induced magnetic poles are attracted to each other by the N pole and the S pole under the action of the magnetic field, so as to realize the reciprocating vibration of the oscillator core.

[0011] As a further improvement of the present invention, the vibration frequency of the oscillator core is consistent with the frequency of the AC power supply.

[0012] The beneficial effects of this invention are as follows: This invention sets multiple magnetic pole cores on a magnetic core and sequentially winds A and B phase excitation coils, each connected to diodes in opposite directions. This achieves alternating rectification of the AC power supply, thereby alternately passing directional currents through the coils, causing the magnetic pole cores to alternately generate N and S alternating induced magnetic fields. The oscillator core is inlaid with permanent magnets of the same number as the induced magnetic poles, distributed with alternating polarities. Utilizing the mutual attraction between the N and S poles of the permanent magnets and the induced magnetic field, the oscillator core is directly driven to perform high-frequency reciprocating vibration along the axial direction. This structure eliminates the need for mechanical components such as motors, transmission mechanisms, and eccentric blocks found in traditional vibrators, fundamentally eliminating mechanical friction and impact, significantly reducing operating noise and wear, resulting in high vibration efficiency, direct energy conversion, and long service life. Furthermore, this device can be flexibly adapted to single-phase or three-phase AC power supplies through a simple diode rectifier circuit, maintaining consistency between the vibration frequency and the power supply frequency. It is easy to control, compact in structure, and reliable in operation, suitable for various industrial vibration scenarios, and possesses strong practicality and promotional value. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the inner oscillator principle of an electromagnetic vibrator according to the present invention;

[0014] Figure 2 This is a cross-sectional view of the outer oscillator of an electromagnetic vibrator according to the present invention;

[0015] Figure 3 This is a cross-sectional view of the principle of the inner oscillator of the multi-pole electromagnetic vibrator of the present invention;

[0016] Figure 4 This is a wiring diagram of an electromagnetic vibrator of the present invention connected to a single-phase AC power supply;

[0017] Figure 5 This is a wiring diagram of an electromagnetic vibrator of the present invention connected to a three-phase AC power supply.

[0018] As shown in the figure: 1. Outer shell, 2. Magnetic core, 3. Wire groove, 4. Magnetic pole core, 5. Phase A excitation coil, 6. Phase B excitation coil, 7. Diode, 8. Oscillator core, 9. Permanent magnet, 10. Bearing. Detailed Implementation

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0020] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0021] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] Example:

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, an electromagnetic vibrator includes a housing 1, characterized in that: a magnetic core 2 is fixed on the housing 1, and the magnetic core 2 is provided with a wire groove 3, dividing the magnetic core 2 into several magnetic pole cores 4; an A-phase excitation coil 5 and a B-phase excitation coil 6 are alternately wound on the magnetic pole cores 4; the A-phase excitation coil 5 and the B-phase excitation coil 6 are respectively connected to directional currents through diodes 7 with opposite directions to alternately generate induced magnetic poles, and the N poles and S poles of the induced magnetic poles are alternately distributed; an oscillator core 8 is provided on one side of the induced magnetic poles, and permanent magnets 9 are embedded in the oscillator core 8, the number of permanent magnets 9 being the same as the number of magnetic pole cores wound on each phase excitation coil, and the N poles and S poles of the permanent magnets 9 are alternately distributed; the two ends of the oscillator core 8 are supported by bearings 10, the bearings 10 are mounted on end caps, and the end caps are fixedly connected to the housing 1.

[0024] Figure 4 The diagram shows a wiring configuration for an electromagnetic vibrator connected to a single-phase AC power supply. Phase A excitation coil 5 and phase B excitation coil 6 are connected to diodes 7 in opposite directions. The front ends of the two excitation coils are connected together to the L terminal of the single-phase AC power supply, and the rear ends are connected together to the N terminal. When the single-phase AC power supply operates at a certain frequency... When the circuit is turned on, the forward current flows through the A-phase excitation coil 5, and the reverse current flows through the B-phase excitation coil 6. The A-phase excitation coil 5 and the B-phase excitation coil 6 operate at the same frequency. The excitation coils alternately generate induced magnetic poles, with the number of induced magnetic poles matching the number of permanent magnets 9 on the core 8 of the oscillator. When the A-phase excitation coil 5 generates induced magnetic poles, the N and S poles of the induced magnetic poles correspond to the S and N poles of the permanent magnets 9 on the core 8 under the influence of the magnetic field. Similarly, when the B-phase excitation coil generates induced magnetic poles, the S and N poles of the permanent magnets 9 on the core 8 correspond to the N and S poles of the B-phase induced magnetic pole 6 under the influence of the magnetic field. Because the A and B-phase excitation coils are alternately distributed, the permanent magnets 9 cause the core 8 to vibrate reciprocally. The vibration frequency is the same as the AC power frequency. Consistent.

[0025] Figure 5 The diagram shows a wiring method for connecting an electromagnetic vibrator to a three-phase AC power supply. One end of the A-phase excitation coil 5 is connected to a forward diode 7 and then to the three-phase AC power supply U1. The other end of the A-phase excitation coil 5 is combined with one end of the B-phase excitation coil 6 and connected to the three-phase AC power supply U2. The other end of the B-phase excitation coil 6 is connected to a reverse diode 7 and then to the three-phase AC power supply U3. When U1 is high, current flows through the A-phase excitation coil 5. When U2 is high, current flows through the B-phase excitation coil 6. The A-phase excitation coil 5 and the B-phase excitation coil 6 alternately generate induced magnetic poles. As mentioned earlier, the N and S poles of the alternately generated induced magnetic poles correspond alternately with the S and N poles of the permanent magnet 9 on the oscillator core 8 under the action of the magnetic field, generating reciprocating vibration.

[0026] The housing of an electromagnetic vibrator according to the present invention can be circular or square. If the housing is circular, the vibrator is also circular and vibrates in an arc. If the housing is square, the vibrator is also square and vibrates in a straight line.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electromagnetic vibrator, comprising a housing (1), characterized in that: A magnetic core (2) is fixed on the housing (1). The magnetic core (2) has a wire groove (3) that divides it into several magnetic pole cores (4). An A-phase excitation coil (5) and a B-phase excitation coil (6) are wound alternately on the magnetic pole cores (4). The A-phase excitation coil (5) and the B-phase excitation coil (6) are alternately connected to directional currents through diodes (7) with opposite directions to generate induced magnetic poles. The N and S poles of the magnetic poles are alternately distributed; an oscillator core (8) is provided on one side of the induction magnetic pole, and a permanent magnet (9) is embedded on the oscillator core (8). The number of permanent magnets (9) is the same as the number of magnetic pole cores wound in each phase excitation coil, and the N and S poles of the permanent magnets (9) are alternately distributed; the two ends of the oscillator core (8) are supported by bearings (10), the bearings (10) are mounted on the end cover, and the end cover is fixedly connected to the housing (1).

2. The electromagnetic vibrator according to claim 1, characterized in that: The magnetic core (2) is made of stacked silicon steel sheets.

3. An electromagnetic vibrator according to claim 1, characterized in that: The A-phase excitation coil (5) and the B-phase excitation coil (6) are connected to a single-phase AC power supply or a three-phase AC power supply through a diode (7).

4. An electromagnetic vibrator according to claim 3, characterized in that: When connected to a single-phase AC power supply, the front ends of the A-phase excitation coil (5) and the B-phase excitation coil (6) are connected to the L end of the power supply, and the rear ends are connected to the N end of the power supply, and diodes (7) with opposite directions are connected in series respectively.

5. An electromagnetic vibrator according to claim 3, characterized in that: When connected to a three-phase AC power supply, one end of the A-phase excitation coil (5) is connected to phase U1 via a forward diode (7), and the other end is connected to phase U2 via one end of the B-phase excitation coil (6). The other end of the B-phase excitation coil (6) is connected to phase U3 via a reverse diode (7).

6. An electromagnetic vibrator according to claim 1, characterized in that: The shell (1) is circular or square, and correspondingly, the oscillator core (8) is arc-shaped or straight.

7. An electromagnetic vibrator according to claim 1, characterized in that: The permanent magnet (9) and the induced magnetic poles are attracted to each other by the N pole and the S pole under the action of the magnetic field, so as to realize the reciprocating vibration of the oscillator core (8).

8. An electromagnetic vibrator according to claim 1, characterized in that: The vibration frequency of the oscillator core (8) is consistent with the frequency of the AC power supply.

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