Long life electromagnet

Abstract

The utility model discloses a long -life electromagnet relates to the technical field of electromagnet, including magnetic coil subassembly, and the movable iron core is set up in the inside of magnetic coil subassembly, and the movable iron core is T type, and the top iron core is inserted fixed from the one end of magnetic coil subassembly away from movable iron core. The spring is pagoda -shaped and is fixedly arranged between the movable iron core and the top iron core position, and the spring inner chamber end portion sliding insertion has the aluminum cover fixed with movable iron core end face. The utility model discloses a movable iron core is set as T type, makes it and the top iron core contact contact shoe part has greater outer diameter, guarantees enough power capacity, still can have the ability to overcome resistance after resistance increases when long -time use abrasion, and adopts aluminum cover positioning spring, not only guarantees spring centering positioning, can also resist the impact after the electromagnetic attraction of electrification, thereby help to prolong the service life of electromagnet.

Description

Technical Field

[0001] This utility model relates to the field of electromagnet technology, and in particular to a long-life electromagnet. Background Technology

[0002] An electromagnet is a device that uses an electric current passing through a coil to generate a magnetic field. Its magnetism can be quickly controlled by turning the current on or off. It is usually composed of an iron core and a coil of wound wire. When the current passes through the coil, the iron core is magnetized, forming a strong magnetic field. When the current is turned off, the magnetic field disappears. As a result, electromagnets are now widely used, especially in some precision instruments. For example, modern dialysis machines use electromagnets to precisely control the flow of dialysate and blood.

[0003] Mechanical wear is one of the important factors affecting the service life of electromagnets currently in use. Due to the repeated collisions between the electromagnet valve core and the guide component during the attraction / release process, metal fatigue or deformation may occur after long-term use, resulting in a short service life of the electromagnets currently in use, which increases the cost of maintenance and use. Therefore, a long-life electromagnet is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a long-life electromagnet to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a long-life electromagnet, comprising:

[0006] Magnetic coil assembly;

[0007] A moving iron core, which is movably disposed inside the magnetic coil assembly, is T-shaped.

[0008] A top iron core is inserted and fixed from the end of the magnetic coil assembly away from the moving iron core.

[0009] The spring is pagoda-shaped and fixedly positioned between the moving iron core and the top iron core. An aluminum sleeve, which is fixed to the end face of the moving iron core, is slidably inserted into the end of the spring cavity.

[0010] Preferably, the magnetic coil assembly includes:

[0011] The housing has a top iron core fixedly inserted into one end and a moving iron core slidably inserted into the other end.

[0012] A coil holder is fixedly inserted into the inside of the housing, and a coil is fixedly mounted on the outer wall of the coil holder.

[0013] Preferably, a wire electrically connected to the coil is inserted into the outer wall end of the top iron core, and a protective sleeve is fixedly provided between the top iron core and the wire.

[0014] Preferably, a guide rod is provided at the middle of one end of the moving iron core facing the top iron core, and the moving iron core, aluminum sleeve and guide rod are riveted into an integral structure, and the aluminum sleeve is made of aluminum alloy.

[0015] Preferably, a first bearing is provided between the moving iron core and the housing, and a second bearing is provided between the guide rod and the top iron core.

[0016] Preferably, a rubber pad is provided between the guide rod and the top iron core, at the end of the second bearing near the spring, and the diameter of the rubber pad gradually decreases along the direction close to the spring.

[0017] Compared with the prior art, the technical effects of this utility model are as follows:

[0018] This invention sets the moving iron core in a T-shape, giving it a larger outer diameter at the contact point with the top iron core and the pole shoe, ensuring sufficient output power. Even after prolonged use and wear leading to increased resistance, it can still overcome resistance. Furthermore, the use of an aluminum sleeve positioning spring not only ensures the spring is centered but also withstands the impact after the electromagnet is energized and attracted, thus helping to extend the electromagnet's service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the split structure of this utility model.

[0021] Figure 3 This is a front cross-sectional view of the present invention.

[0022] In the diagram: 100, housing; 101, coil; 102, moving iron core; 103, first bearing; 104, guide rod; 105, spring; 106, aluminum sleeve; 107, rubber gasket; 108, top iron core; 109, wire sheath; 110, second bearing; 111, coil retainer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figures 1-3The long-life electromagnet shown includes a magnetic coil assembly. The magnetic coil assembly includes a housing 100, a top iron core 108 fixedly inserted into one end of the housing 100, a moving iron core 102 slidably inserted into the other end of the housing 100, and a coil holder 111 fixedly inserted into the inside of the housing 100. The coil 101 is fixedly mounted on the outer wall of the coil holder 111. One end face of the housing 100 has an annular cavity, allowing the moving iron core 102 to be wound and fixed on the outer wall of the coil holder 111, and the entire assembly of the coil holder 111 can be inserted into the annular cavity of the housing 100 for installation. Positioning: The moving iron core 102 is movably disposed inside the magnetic coil assembly. The moving iron core 102 is T-shaped. The top iron core 108 is inserted and fixed from the end of the magnetic coil assembly away from the moving iron core 102. The moving iron core 102 can move axially inside the housing 100, while the top iron core 108 is fixed to the inner wall of the housing 100, acting as a barrier to the moving iron core 102. Due to the T-shaped design of the moving iron core 102, the contact part with the top iron core 108 has a large outer diameter, ensuring a sufficiently strong output capacity. Furthermore, this design allows for long-term operation of the moving iron core 102 and the top iron core 108. Even with wear and tear and increased resistance, the moving iron core 102 can still overcome the resistance, helping to extend its service life. The spring 105 is pagoda-shaped and fixedly positioned between the moving iron core 102 and the top iron core 108. An aluminum sleeve 106, which is fixed to the end face of the moving iron core 102, is slidably inserted into the inner end of the spring 105. The pagoda-shaped design of the spring 105 contributes to a compact structure, thereby achieving a high load-bearing capacity in a limited space. Furthermore, the aluminum sleeve 106 positions the port of the spring 105, ensuring a centered installation of the spring 105. Made of aluminum alloy, it can withstand the impact after the electromagnet is energized and attracted, and has a long service life. At the same time, the small size further ensures the compactness of the internal structure of the electromagnet, thus ensuring that the spring 105 has a long service life. The moving iron core 102 has a guide rod 104 in the middle of one end facing the top iron core 108. The moving iron core 102, aluminum sleeve 106 and guide rod 104 are riveted into a whole structure. The moving iron core 102, aluminum sleeve 106 and guide rod 104 are riveted and fixed to form a whole structure, which makes the connection between the three more stable and the structure more compact.

[0025] Furthermore, a first bearing 103 is provided between the moving iron core 102 and the housing 100, and a second bearing 110 is provided between the guide rod 104 and the top iron core 108. The contact portion between the moving iron core 102 and the first bearing 103 is produced by external cylindrical grinding, resulting in a smooth surface and a small outer diameter, which significantly reduces frictional resistance. Additionally, the outer wall of the guide rod 104 is also produced by external cylindrical grinding, similarly reducing frictional resistance. Furthermore, a second bearing 110 is provided at the end of the guide rod 104. Preferably, both the first bearing 103 and the second bearing 110 are self-lubricating bearings, with the first bearing 103 located at the end of the moving iron core 102. The frictional resistance and wear of the moving iron core 102 are small throughout its movement, which helps to extend its service life. A rubber pad 107 is provided between the guide rod 104 and the top iron core 108, and at the end of the second bearing 110 near the spring 105. The diameter of the rubber pad 107 gradually decreases along the direction near the spring 105. The rubber pad 107 adopts a tapered design with a gradually decreasing diameter, which can effectively prevent it from falling out after being embedded in the top iron core 108. In addition, the rubber pad 107 is hardened to improve its wear resistance, thereby extending its service life.

[0026] In addition, a wire electrically connected to the coil 101 is inserted into the outer end of the top iron core 108. A protective sleeve 109 is fixed between the top iron core 108 and the wire. The wire can easily establish an electrical connection between the coil 101 and the external power source. The protective sleeve 109 positions and protects the wire between the guide and the top iron core 108, reducing the probability of wire damage and improving safety.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A long-life electromagnet, characterized in that, include: Magnetic coil assembly; A moving iron core (102) is movably disposed inside the magnetic coil assembly, and the moving iron core (102) is T-shaped; A top iron core (108) is inserted and fixed from the end of the magnetic coil assembly away from the moving iron core (102); Spring (105), which is pagoda-shaped and fixedly positioned between the moving iron core (102) and the top iron core (108), has an aluminum sleeve (106) slidably inserted into the inner end of the spring (105) and fixed to the end face of the moving iron core (102).

2. The long-life electromagnet according to claim 1, characterized in that, The magnetic coil assembly includes: The housing (100) has a top iron core (108) fixedly inserted into one end of the housing (100), and a moving iron core (102) slidably inserted into the other end of the housing (100). A coil holder (111) is fixedly inserted into the housing (100), and a coil (101) is fixedly provided on the outer wall of the coil holder (111).

3. A long-life electromagnet according to claim 2, characterized in that, The top iron core (108) has a wire that is electrically connected to the coil (101) inserted into the outer wall end, and a wire sleeve (109) is fixedly provided between the top iron core (108) and the wire.

4. A long-life electromagnet according to claim 2, characterized in that, The moving iron core (102) is provided with a guide rod (104) at the middle of one end facing the top iron core (108). The moving iron core (102), the aluminum sleeve (106) and the guide rod (104) are riveted into an integral structure, and the aluminum sleeve (106) is made of aluminum alloy.

5. A long-life electromagnet according to claim 4, characterized in that, A first bearing (103) is provided between the moving iron core (102) and the housing (100), and a second bearing (110) is provided between the guide rod (104) and the top iron core (108).

6. A long-life electromagnet according to claim 5, characterized in that, A rubber pad (107) is provided between the guide rod (104) and the top iron core (108) and at one end of the second bearing (110) near the spring (105). The diameter of the rubber pad (107) gradually decreases along the direction near the spring (105).

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