Three-proofing electromagnetic coil

Abstract

The utility model relates to a three-proofing electromagnetic coil. Comprising a supporting bottom plate, an E-shaped iron core assembly is fixedly installed in the middle of the supporting bottom plate, the back of the iron core assembly is fixedly connected with the supporting bottom plate, and a framework and a winding are installed on the iron core assembly. The framework and the winding are positioned in an epoxy resin casting ladle which is integrally cast and molded, and the epoxy resin casting ladle and the iron core assembly are combined into a whole; the framework and the winding comprise a framework sleeve, a framework top plate is mounted at the top of the framework sleeve, a framework bottom plate is mounted at the bottom of the framework sleeve, the winding is wound on the framework sleeve, and the framework sleeve sleeves a middle body of the iron core assembly; and the cable is connected with the framework and the winding. The three-proofing electromagnetic coil provided by the utility model is strong in structural integrity and has good moisture-proof, mildew-proof and salt mist-proof capabilities, the service life is prolonged, and the failure rate is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic coil technology, and in particular relates to a three-proof electromagnetic coil. Background Technology

[0002] An electromagnetic coil is a coil that converts electricity into a magnetic field. The generation and disappearance of magnetic force are controlled by switching the coil on and off. It has wide applications in various industries, such as magnetic sorting of goods and automated sorting of medicines in hospital pharmacies. Structurally, an electromagnetic coil typically consists of an iron core and coil windings. When the coil windings are energized or de-energized, the iron core exhibits magnetic force or the magnetic force disappears.

[0003] Existing electromagnetic coils typically have a modular assembly structure, resulting in poor overall integrity and consequently, poor resistance to moisture, mold, and salt spray. In harsh environments, such as high-frequency vibration environments or humid salt spray environments, electromagnetic coils are prone to failure, leading to short service life and high failure rates. Therefore, it is necessary to optimize the design of the electromagnetic coil structure to address the aforementioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a tri-proof electromagnetic coil with a strong overall structure, good moisture-proof, mildew-proof, and salt spray-proof capabilities, thereby extending service life and reducing failure rate.

[0005] The technical solution adopted by this utility model is as follows: a three-proof electromagnetic coil, including a supporting base plate, an "E"-shaped iron core assembly fixedly installed in the middle of the supporting base plate, the back of the iron core assembly being fixedly connected to the supporting base plate, a skeleton and windings being installed on the iron core assembly, the skeleton and windings being located inside an integrally cast epoxy resin casting, and the epoxy resin casting being combined with the iron core assembly to form a whole; the skeleton and windings include a skeleton sleeve, a skeleton top plate being installed at the top of the skeleton sleeve and a skeleton bottom plate being installed at the bottom, the windings being wound on the skeleton sleeve, and the skeleton sleeve being fitted on the middle body of the iron core assembly; it also includes a cable connected to the skeleton and windings.

[0006] Preferably, the core assembly is formed by stacking multiple "E"-shaped core laminations. On-plate welding grooves are provided on both sides and end edges of each core lamination. After the core laminations are stacked, the on-plate welding grooves at the corresponding positions form straight welding grooves. Strip-shaped core welding points are formed by welding in each straight welding groove.

[0007] Preferably, two connecting holes are provided at the root of each iron core lamination, and after the iron core laminations are stacked, fastening bolts are installed in the connecting holes.

[0008] Preferably, root weld grooves are provided on both sides of the root of each core lamination. After the core laminations are stacked, the root weld grooves at the corresponding positions form straight weld grooves. The back surface of the core assembly is attached to the support base plate and welded in the straight weld grooves to form strip-shaped assembly weld points.

[0009] Preferably, the supporting base plate includes a base plate body, an iron core assembly fixedly connected to the middle of the base plate body, and a connection hole and a ground wire connection hole on the base plate body. A cable fixing seat is provided at the end of the cable and the cable fixing seat is installed and fixed in the connection hole on the plate. The ground wire in the cable is connected to the ground wire connection hole by a connector.

[0010] Preferably, mounting holes are provided at the four corners of the base plate body supporting the base plate, and the three-proof electromagnetic coil is fixed by mounting bolts located in the mounting holes.

[0011] The advantages and positive effects of this utility model are:

[0012] This invention provides a three-proof electromagnetic coil. Compared with existing electromagnetic coils, this coil's core assembly and supporting base plate are fixed as one unit, and the frame and windings are integrally cast with epoxy resin, with the epoxy resin lamination combined with the core assembly to form a whole. Therefore, this electromagnetic coil has strong integrity and structural stability. Because the frame and windings are integrally cast inside the epoxy resin lamination, this reactor has superior moisture-proof, mildew-proof, and salt spray-proof capabilities, i.e., superior three-proof capabilities. During long-term application, even under harsh operating conditions, the electromagnetic coil is not prone to failure, exhibiting a long service life and low failure rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure of the central support base plate;

[0015] Figure 3 yes Figure 1 Schematic diagram of the structure of the iron core assembly;

[0016] Figure 4 yes Figure 1 A schematic diagram of the skeleton structure of the frame and windings; the windings are not shown.

[0017] In the picture:

[0018] 1. Support base plate; 1-1. Base plate body; 1-2. Connecting holes on the plate; 1-3. Ground wire connecting hole; 1-4. Mounting hole; 2. Cable fixing seat; 3. Cable; 4. Fastening bolt; 5. Iron core assembly; 5-1. Iron core laminations; 5-2. On-laminate welding groove; 5-3. Connecting hole; 5-4. Root welding groove; 6. On-core welding point; 7. Epoxy resin casting ladle; 8. Frame and winding; 8-1. Frame base plate; 8-2. Frame sleeve; 8-3. Frame top plate; 8-4. Wire hole; 9. Assembly welding point; 10. Mounting bolt. Detailed Implementation

[0019] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0020] Please see Figure 1 The tri-proof electromagnetic coil of this invention includes a supporting base plate 1. An "E"-shaped iron core assembly 5 is fixedly installed in the middle of the supporting base plate 1. The back of the iron core assembly 5 is fixedly connected to the supporting base plate 1. A frame and winding 8 are installed on the iron core assembly 5. The frame and winding 8 are located inside an integrally cast epoxy resin casting 7 and are combined with the iron core assembly 5 to form a whole. Therefore, this tri-proof electromagnetic coil has an integral structure that cannot be disassembled after processing, ensuring the structural stability of the electromagnetic coil during its application period.

[0021] Please see Figure 2 It can be seen that:

[0022] The supporting base plate 1 includes a base plate body 1-1, and the iron core assembly 5 is fixedly connected to the middle of the base plate body 1-1. The base plate body 1-1 is also provided with on-plate connection holes 1-2 and ground wire connection holes 1-3. Furthermore, mounting holes 1-4 are provided at the four corners of the base plate body 1-1 of the supporting base plate 1, and the tri-proof electromagnetic coil is fixed using mounting bolts 10 located in the mounting holes 1-4, for example, fixed to the equipment frame.

[0023] Please see Figure 3 It can be seen that:

[0024] The core assembly 5 is composed of multiple "E"-shaped core laminations 5-1 stacked together. On-plate welding grooves 5-2 are provided on both sides and end edges of each core lamination 5-1. After the core laminations 5-1 are stacked, the on-plate welding grooves 5-2 at the corresponding positions form straight welding grooves. Strip-shaped core welding points 6 are welded in each straight welding groove, and the strip-shaped core welding points 6 fix each core lamination 5-1 into a whole.

[0025] like Figure 1 and Figure 3As shown, five straight weld grooves are formed on the left, right, and front (including the left, middle, and right parts) of the core assembly 5, corresponding to five strip-shaped core weld points 6. These core weld points 6 fix the stacked core laminations 5-1 into a single unit, forming a stable structure. Furthermore, after welding the core weld points 6, the surface of the core assembly 5 should be polished to make it smooth.

[0026] In this embodiment, two connecting holes 5-3 are provided at the root of each core lamination 5-1. After the core laminations 5-1 are stacked, fastening bolts 4 are installed in the connecting holes 5-3. The function of this structure is: after the core laminations 5-1 are stacked and before welding to form the core weld point 6, the stacked core laminations 5-1 are first pressed into a whole by the two fastening bolts 4 to prevent loosening. Then, the core weld point 6 is formed by welding. After welding, the two fastening bolts 4 can be retained or removed.

[0027] In this embodiment, root weld grooves 5-4 are provided on both sides of the root of each core lamination 5-1. After the core laminations 5-1 are stacked, the root weld grooves 5-4 at the corresponding positions form straight weld grooves. The back surface of the core assembly 5 is attached to the base plate body 1-1 of the supporting base plate 1 and welded in the straight weld groove to form strip-shaped assembly weld points 9. As shown in the figure, the two strip-shaped assembly weld points 9 on the left and right assemble the supporting base plate 1 and the core assembly 5 into a whole.

[0028] Please see Figure 4 It can be seen that:

[0029] The skeleton and winding 8 includes a skeleton sleeve 8-2, a skeleton top plate 8-3 is installed on the top of the skeleton sleeve 8-2, a skeleton bottom plate 8-1 is installed on the bottom, the winding is wound on the skeleton sleeve 8-2, and the skeleton sleeve 8-2 is sleeved on the middle body of the iron core assembly 5.

[0030] As shown in the figure, the skeleton sleeve 8-2 is a cuboid shape, and its cross-sectional dimensions are larger than those of the intermediate body of the iron core assembly 5. The top plate 8-3 and the bottom plate 8-1 of the skeleton are both rectangular plates with a rectangular window in the middle. The ends of the skeleton sleeve 8-2 are located in the corresponding windows and are welded and fixed.

[0031] As shown in the figure, two wire holes 8-4 are provided on the left and right sides of the edge of the frame base plate 8-1. After the coil winding is wound on the frame sleeve 8-2, the two ends of the coil pass through the two wire holes 8-4.

[0032] It also includes a cable 3 connected to the frame and winding 8. The cable 3 includes a power supply line for power supply control of the coil winding and a ground wire. In this embodiment, a cable fixing seat 2 is provided at the end of the cable 3 and the cable fixing seat 2 is installed and fixed in the connection hole 1-2 on the plate. The ground wire in the cable 3 is connected to the ground wire connection hole 1-3 by a connector. The power supply line in the cable 3 is connected to the two coil ends of the coil winding.

[0033] Production method:

[0034] After stacking the iron core laminations 5-1, they are first fixed together with fastening bolts 4. Then, multiple welding points 6 are formed on the core and ground after welding to form the iron core assembly 5. The iron core assembly 5 is then welded and installed on the support base plate 1.

[0035] The coil winding is wound on the skeleton of the skeleton and winding 8 and the coil end is passed through the wire hole 8-4. Then the skeleton and winding 8 are assembled on the iron core assembly 5. The aforementioned assembly is placed into the casting mold and cast in one piece to form an epoxy resin casting bag 7. The epoxy resin casting bag 7 should cast the skeleton and winding 8 as a whole inside and the epoxy resin casting bag 7 combines the skeleton and winding 8 with the iron core assembly 5 into a whole. Then the cable fixing seat 2 of the cable 3 is installed and fixed on the support base plate 1, and then the power supply line and ground line are connected.

Claims

1. A tri-proof electromagnetic coil, characterized in that: The system includes a support base plate (1), an "E"-shaped iron core assembly (5) fixedly installed in the middle of the support base plate (1), the back of the iron core assembly (5) being fixedly connected to the support base plate (1), a skeleton and winding (8) being installed on the iron core assembly (5), the skeleton and winding (8) being located inside an integrally cast epoxy resin casting ladle (7) and being combined with the iron core assembly (5) to form a whole; the skeleton and winding (8) includes a skeleton sleeve (8-2), a skeleton top plate (8-3) being installed at the top of the skeleton sleeve (8-2) and a skeleton bottom plate (8-1) being installed at the bottom, the winding being wound on the skeleton sleeve (8-2), and the skeleton sleeve (8-2) being fitted on the middle body of the iron core assembly (5); it also includes a cable (3) connected to the skeleton and winding (8).

2. The tri-proof electromagnetic coil as described in claim 1, characterized in that: The core assembly (5) is made up of multiple "E"-shaped core laminations (5-1). On-plate welding grooves (5-2) are provided on both sides and end edges of each core lamination (5-1). After the core laminations (5-1) are stacked, the on-plate welding grooves (5-2) at the corresponding positions form straight welding grooves. Strip-shaped core welding points (6) are welded in each straight welding groove.

3. The tri-proof electromagnetic coil as described in claim 2, characterized in that: in Each core lamination (5-1) is provided with two connecting holes (5-3) at the root. After the core laminations (5-1) are stacked, fastening bolts (4) are installed in the connecting holes (5-3).

4. The tri-proof electromagnetic coil as described in claim 3, characterized in that: in Each core lamination (5-1) has a root weld groove (5-4) on both sides of its root. After the core laminations (5-1) are stacked, the root weld grooves (5-4) at the corresponding positions form a straight weld groove. The back surface of the core assembly (5) is attached to the support base plate (1) and welded in the straight weld groove to form a strip-shaped assembly weld point (9).

5. The tri-proof electromagnetic coil as described in claim 4, characterized in that: The supporting base plate (1) includes a base plate body (1-1), and the iron core assembly (5) is fixedly connected to the middle of the base plate body (1-1). The base plate body (1-1) is also provided with a plate connection hole (1-2) and a ground wire connection hole (1-3). A cable fixing seat (2) is provided at the end of the cable (3) and the cable fixing seat (2) is installed and fixed in the plate connection hole (1-2). The ground wire in the cable (3) is connected to the ground wire connection hole (1-3) by a connector.

6. The tri-proof electromagnetic coil as described in claim 5, characterized in that: Mounting holes (1-4) are provided at the four corners of the base plate body (1-1) of the supporting base plate (1). The three-proof electromagnetic coil is fixed by mounting bolts (10) located in the mounting holes (1-4).

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