An electromagnetic exciter

Abstract

This utility model relates to an electromagnetic vibrator, comprising a housing assembly, a spring plate, an electromagnet, and an armature. The spring plate is located at the top of the housing assembly, with the armature fixedly connected to its bottom end and a clamping assembly at its top. The electromagnet is located at the bottom of the housing assembly and is coaxially arranged with the armature. A position adjustment assembly is located at the bottom of the electromagnet. An electrical connection assembly for connecting an external power source to the electromagnet is located at the bottom of the outer side of the housing assembly. This application can be used for conveying and storing powder or granular materials, effectively improving material flowability and unloading effect, breaking up material agglomeration, restoring material permeability, reducing material accumulation at the bottom of the silo, and reducing the load on the silo bottom surface. Moreover, it has a stable structure and minimal impact on materials, and can be applied to vibrating discs, vibrating conveyors, vibrating screens, and vibrating impactors.

Description

Technical Field

[0001] This utility model relates to the field of exciter technology, specifically to an electromagnetic exciter. Background Technology

[0002] In industrial sectors such as material processing, warehousing, and transportation, material silos serve as core equipment for the temporary storage and transfer of materials, and the unobstructed flow of their discharge ports directly impacts the operational efficiency of the entire production line. However, due to the tendency of materials (such as powders and granular materials) to agglomerate and bridge during storage and descent caused by humidity, viscosity, or accumulation pressure, discharge port blockages are frequent. This not only leads to production interruptions but also requires manual cleaning, increasing labor costs and safety hazards. To address this issue, the industry commonly employs vibration excitation to disrupt material agglomeration, with plate vibrators being one of the current mainstream solutions. The plate vibrator uses a plate and springs as elastic supports and vibration transmission carriers. A vibrating motor drives the plate to oscillate periodically, transmitting the vibration to the side wall of the material hopper's discharge port. However, this structure has significant technical defects, making it difficult to achieve the ideal anti-clogging effect: Firstly, the vibration direction of the plate spring is mainly lateral oscillation, concentrating the vibration energy in a local area of ​​the discharge port. It cannot form an effective excitation along the material's falling direction (axial direction). For materials that have already formed bridges, it can only slightly disturb the surface layer, making it difficult to completely destroy the internal agglomeration structure, causing the material to still easily get stuck in the discharge port. Secondly, the elastic stiffness of the plate spring is limited by the structure. After long-term high-frequency vibration, it is prone to fatigue deformation, which not only leads to a decrease in vibration frequency and excitation force but may also cause equipment failure due to spring breakage, requiring frequent shutdowns for replacement and resulting in high maintenance costs. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing an electromagnetic vibrator that can adapt to the working conditions of the material silo discharge port.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An electromagnetic vibrator includes a housing assembly, a spring plate, an electromagnet, and an armature; the spring plate is located at the top inside the housing assembly, the bottom end of the spring plate is fixedly connected to the armature, and the top end is provided with a clamping assembly; the electromagnet is located at the bottom inside the housing assembly and is coaxially arranged with the armature, and the bottom end of the electromagnet is provided with a position adjustment assembly; the bottom outside the housing assembly is provided with an electrical connection assembly for connecting an external power source to the electromagnet.

[0005] The beneficial effects of this utility model are: The vibration function is achieved by attracting and releasing the armature with an electromagnet, causing the spring plate to deform elastically. The relative position of the electromagnet and the armature is adjusted by the position adjustment component, thereby regulating the vibration parameters of the vibrator. It can be used for conveying and storing powdery or granular materials (such as cement, lime, activated carbon, alumina, etc.), effectively improving material flowability and unloading effect, breaking up material agglomeration, restoring material permeability, reducing material accumulation at the bottom of the silo, reducing the load on the bottom surface of the silo, and extending the service life of the silo. Moreover, it has a stable structure and minimal impact on materials, and can be applied to vibratory feeders, vibratory conveyors, vibrating screens, and vibratory impactors.

[0006] Furthermore, the housing assembly includes a housing, a front cover, and a rear cover. The front cover and rear cover are respectively fixed to the front and rear ends of the housing using screws and washers. The inner wall of the housing is provided with a support platform for supporting the spring plate. The housing assembly has good sealing and stability, and can effectively protect the internal spring plate, electromagnet, and other components from the influence of the external environment.

[0007] Furthermore, a connecting plate for connecting the load-bearing device is fixedly provided at the top of the housing, so that the electromagnetic vibrator can be easily connected to various devices that need to be vibrated, thereby realizing the force transmission between the vibrator and the load-bearing device.

[0008] Furthermore, the side wall of the housing is provided with a lifting ring, an observation window, and a nameplate, and the bottom wall of the housing is provided with a wiring port to facilitate the hoisting, understanding, and management of the equipment.

[0009] Furthermore, the clamping assembly is located at both ends and the middle of the spring plate, and includes a clamping screw, a clamping nut, and a clamping block. The clamping nut is fixedly connected to the inner wall of the top of the housing. The end of the clamping screw passes into the housing and is fixed with a clamping block. The lower surface of the clamping block abuts against the upper surface of the spring plate. The clamping screw and the clamping nut are threadedly connected.

[0010] Furthermore, the electromagnet is mounted inside the housing via a mounting bracket, and the electromagnet is fixedly connected to the mounting bracket.

[0011] Furthermore, the position adjustment assembly is located at both ends below the mounting base and includes an adjusting bolt, an adjusting nut, and a locking nut. The adjusting nut is fixedly connected to the outer wall of the bottom of the housing. The end of the adjusting bolt passes through the adjusting nut and the housing in sequence and abuts against the lower surface of the mounting base. The adjusting bolt and the adjusting nut are threadedly connected, and a locking nut is provided on the adjusting bolt between the mounting base and the housing. By rotating the adjusting bolt, the electromagnet can be moved up and down, thereby achieving fine adjustment of the electromagnet's position.

[0012] Furthermore, the electrical connection assembly includes terminals, a terminal block, and a junction box. The junction box is fixed to the bottom outer wall of the housing at the corresponding terminal port by screws and washers. The terminal block is fixed inside the junction box, and the terminal block is fixed to the terminal block.

[0013] Furthermore, the terminal block includes a positive terminal and a negative terminal. The positive terminal is electrically connected to an external power supply, and the negative terminal is electrically connected to the electromagnet. This electrical connection assembly structure makes the connection between the power supply and the electromagnet more reliable and safe, facilitates wiring and maintenance, and effectively prevents electrical faults, ensuring the normal operation of the exciter.

[0014] Furthermore, pads and shims are provided between the lower surfaces of both ends of the spring plate and the upper surface of the support platform on the inner wall of the housing, which serve to buffer and adjust. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 for Figure 1 A cross-sectional view along the AA direction; The attached diagram lists the components represented by each number as follows: 1. Housing, 2. Front cover, 3. Rear cover, 4. Support platform, 5. Connecting plate, 6. Lifting ring, 7. Observation window, 8. Nameplate, 9. Spring plate, 10. Electromagnet, 11. Armature, 12. Clamping screw, 13. Clamping nut, 14. Clamping block, 15. Terminal post, 16. Terminal block, 17. Junction box, 18. Spacer, 19. Washer, 20. Mounting base, 21. Adjusting bolt, 22. Adjusting nut, 23. Locking nut. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 technology based on the specific circumstances.

[0019] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0020] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0021] like Figure 1 , Figure 2 As shown, this embodiment provides an electromagnetic vibrator, including a housing assembly, a spring plate 9, an electromagnet 10, and an armature 11. The spring plate 9 is located at the top inside the housing assembly, and the armature 11 is fixedly connected to the bottom end of the spring plate 9. A clamping assembly is provided at the top end of the spring plate 9. The electromagnet 10 is located at the bottom inside the housing assembly and is coaxially arranged with the armature 11. A position adjustment assembly is provided at the bottom end of the electromagnet 10. An electrical connection assembly for connecting an external power supply to the electromagnet 10 is provided at the bottom outside the housing assembly.

[0022] The electromagnetic vibrator in this embodiment achieves its vibration function by attracting and releasing the armature 11 through the electromagnet 10, causing the spring plate 9 to undergo elastic deformation. The relative positions of the electromagnet 10 and armature 11 are adjusted by a position adjustment component, thereby precisely controlling the gap between them and ensuring the vibrator's operational stability and accuracy. For example, the initial position of the spring plate 9 can be changed by adjusting the bolt 12 according to different operational requirements, allowing the vibrator to output different excitation forces and amplitudes. It can be used for conveying and storing powdery or granular materials (such as cement, lime, activated carbon, alumina, etc.), effectively improving material flowability and unloading efficiency, breaking up material agglomerations, restoring material permeability, reducing material accumulation at the bottom of the silo, decreasing the load on the silo bottom, and extending the silo's service life. Furthermore, it has a stable structure and minimal impact on materials, making it suitable for applications such as vibrating discs, vibrating conveyors, vibrating screens, and vibrating impactors.

[0023] Specifically: The housing assembly includes a housing 1, a front cover 2, and a rear cover 3. The front cover 2 and the rear cover 3 are fixedly installed at the front and rear ends of the housing 1 by screws and washers, respectively. A support platform 4 for supporting the spring plate is provided on the upper part of the inner wall of the housing 1. The housing assembly has good sealing and stability, effectively protecting the internal components from the influence of the external environment, such as dust and moisture. It is also easy to install and disassemble, facilitating maintenance and repair of the internal components. In this embodiment, a connecting plate 5 for connecting the load-bearing device is fixed to the top of the housing 1 by screws, allowing the electromagnetic vibrator to be easily connected to various devices that require vibration, realizing force transmission between the vibrator and the load-bearing device, and broadening the application range of the vibrator. For example, the vibrator can be installed on equipment such as vibrating screens and feeders through the connecting plate 5 to provide power to these devices. In this embodiment, the side wall of the housing 1 is provided with a lifting ring 6, an observation window 7, and a nameplate 8, and the bottom wall of the housing 1 has a wiring port. The lifting ring 6 is used for the transportation and installation of the vibrator; the observation window 7 allows operators to easily observe the internal workings of the vibrator, such as the deformation of the spring plate 9 and the working status of the electromagnet 10, so as to promptly identify and address any problems; the nameplate 8 provides relevant information about the vibrator, such as model, specifications, production date, and manufacturer, facilitating user understanding and management of the equipment. The wiring port is used to install electrical connection components.

[0024] The clamping assembly is located at both ends (both ends along the length) and the middle position above the spring plate 9, and includes clamping screws 12, clamping nuts 13, and clamping blocks 14. The clamping nuts 13 are fixedly connected to the inner wall of the top of the housing 1. The end of the clamping screws 12 passes into the housing 1 and is fixed to the clamping blocks 14. The lower surface of the clamping blocks 14 abuts against the upper surface of the spring plate 9. The clamping screws 12 and clamping nuts 13 are threadedly connected. The clamping assembly cooperates with the support platform 101 on the inner wall of the housing 1 to fix the spring plate 9, ensuring its positional stability during operation. At the same time, it provides a certain degree of support and buffering during vibration transmission, limiting the deformation of the spring plate.

[0025] The electromagnet 10 is mounted inside the housing 1 via the mounting base 20, and the electromagnet 10 is fixedly connected to the mounting base 20 by screws. The position adjustment assembly is located at both ends below the mounting base 20, including an adjusting bolt 21, an adjusting nut 22, and a locking nut 23. The adjusting nut 22 is fixedly connected to the bottom outer wall of the housing 1. The end of the adjusting bolt 21 passes through the adjusting nut 22 and the housing 1 in sequence and abuts against the lower surface of the mounting base 20. The adjusting bolt 21 and the adjusting nut 22 are threadedly connected. A locking nut 23 is provided on the adjusting bolt 21 between the mounting base 20 and the housing 1. When the adjusting bolt 21 is rotated, the screw pair transmission characteristics of the thread cause the adjusting bolt 21 to move axially in a linear motion relative to the adjusting nut 22, directly pushing the mounting base 20 and the electromagnet 10 to move together, thereby achieving fine adjustment of the position of the electromagnet 10 and adjusting the vibration parameters of the vibrator. After the adjustment is in place, the locking nut 23 is tightened, and the friction force is used to prevent the adjusting bolt 21 from rotating due to vibration, thereby limiting the return movement of the electromagnet 10 and ensuring the stability of the position of the electromagnet 10 during operation, thus ensuring the working performance of the vibrator.

[0026] The electrical connection assembly includes terminals 15, a terminal block 16, and a junction box 17. The junction box 17 is fixed to the bottom outer wall of the housing 1 at the location corresponding to the wiring port using screws and washers, completely covering the wiring port. The junction box 17 has a wire-passing hole. The terminal block 16 is located inside the junction box 17 and is fixedly connected to the bottom outer wall of the housing 1. Terminals 15 are fixedly mounted on the terminal block 16 and pass through the wiring port of the housing. Each terminal 15 includes a positive terminal and a negative terminal. The positive terminal is electrically connected to an external power supply via a wire, and the negative terminal is electrically connected to the coil of the electromagnet 10 via a wire. The wires and the electromagnet coil can be fixed by welding. This electrical connection assembly structure makes the connection between the power supply and the electromagnet 10 more reliable and safer, facilitates wiring and maintenance, and effectively prevents electrical faults, ensuring the normal operation of the exciter.

[0027] A pad 18 and a shim 19 are provided between the lower surfaces of both ends of the spring plate 9 and the upper surface of the inner wall support platform 4 of the housing 1. The pad 18 can limit the displacement range of the spring plate 9, prevent the spring plate 9 from being damaged due to excessive deformation, and can also adjust the initial position and stiffness of the spring plate 9 to a certain extent, playing a role in buffering and adjustment.

[0028] The working principle of the above structure: Before use, depending on different excitation requirements, the position of the electromagnet 10 inside the exciter relative to the armature 11 can be adjusted by rotating the adjusting bolt 21, thereby adjusting the vibration parameters of the exciter (such as amplitude, frequency, etc.).

[0029] In use, the vibrator is first installed on the supporting equipment via the connecting plate 5, such as fixedly installed on the outer wall of the bottom of the hopper near the discharge port. An external power supply is then connected to the electromagnet 10 via the terminal block 15 and the terminal block 16, causing the electromagnet 10 to generate an electromagnetic field. Then, by controlling the magnitude, direction, and switching frequency of the current, the electromagnet 10 generates a periodically changing electromagnetic force.

[0030] Under the action of electromagnetic force, the armature 11 drives the connected spring plate 9 to move closer to the electromagnet 10, and causes the spring plate 9 to undergo elastic deformation; when the electromagnetic force disappears, the armature 11 returns to its original position under the restoring force of the spring plate 9; this repetition forms a periodic motion, thereby converting the electromagnetic force into mechanical vibration.

[0031] The vibration generated by the vibrator is transmitted to the wall of the hopper, which overcomes the internal friction of the material in the hopper and reduces the friction between the materials, allowing the material to flow more smoothly and fall smoothly from the discharge port.

[0032] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. An electromagnetic exciter, characterized in that, Includes housing assembly, spring plate, electromagnet, and armature; The spring plate is located at the top of the housing assembly, with an armature fixedly connected to the bottom end of the spring plate and a clamping assembly at the top end. The electromagnet is located at the bottom of the housing assembly and is coaxially arranged with the armature. A position adjustment component is provided at the bottom end of the electromagnet. The outer bottom of the housing assembly is provided with an electrical connection component for connecting an external power source to the electromagnet.

2. The electromagnetic exciter according to claim 1, characterized in that, The housing assembly includes a housing, a front cover, and a rear cover. The front cover and the rear cover are fixedly installed at the front and rear ends of the housing by screws and washers, respectively. A support platform for supporting the spring plate is provided on the upper part of the inner wall of the housing.

3. An electromagnetic exciter according to claim 2, characterized in that, A connecting plate for connecting and supporting equipment is fixed at the top of the shell.

4. An electromagnetic exciter according to claim 2, characterized in that, The side wall of the housing is provided with a lifting ring, an observation window and a nameplate, and the bottom wall of the housing is provided with a wiring port.

5. An electromagnetic exciter according to claim 1, characterized in that, The clamping assembly is located at both ends and the middle of the spring plate, and includes a clamping screw, a clamping nut, and a clamping block. The clamping nut is fixedly connected to the inner wall of the top of the housing. The end of the clamping screw passes into the housing and is fixed with a clamping block. The lower surface of the clamping block abuts against the upper surface of the spring plate. The clamping screw and the clamping nut are threadedly connected.

6. An electromagnetic exciter according to claim 1, characterized in that, The electromagnet is mounted inside the housing via a mounting base, and the electromagnet is fixedly connected to the mounting base.

7. An electromagnetic exciter according to claim 6, characterized in that, The position adjustment assembly is located at both ends below the mounting base and includes an adjustment bolt, an adjustment nut, and a locking nut. The adjustment nut is fixedly connected to the outer wall of the bottom of the housing. The end of the adjustment bolt passes through the adjustment nut and the housing in sequence and then abuts against the lower surface of the mounting base. The adjustment bolt and the adjustment nut are threadedly connected. A locking nut is provided on the adjustment bolt between the mounting base and the housing.

8. An electromagnetic exciter according to claim 1, characterized in that, The electrical connection assembly includes terminals, a terminal block, and a junction box. The junction box is fixed to the bottom outer wall of the housing at the corresponding terminal port by screws and washers. The terminal block is fixed inside the junction box, and the terminal block is fixed to the terminal block.

9. An electromagnetic exciter according to claim 8, characterized in that, The terminals include a positive terminal and a negative terminal. The positive terminal is electrically connected to an external power supply, and the negative terminal is electrically connected to an electromagnet.

10. An electromagnetic exciter according to claim 1, characterized in that, A pad and a gasket are provided between the lower surfaces of both ends of the spring plate and the upper surface of the support platform on the inner wall of the shell.

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