Movable iron core structure of electromagnetic valve

Abstract

The utility model discloses an electromagnetic valve movable iron core structure which comprises an electromagnetic valve shell, a coil framework arranged in the electromagnetic valve shell, a coil wound on the outer side of the coil framework and a static iron core fixedly installed in the middle of the coil framework, and a movable iron core is movably installed in the center of the coil framework and located below the static iron core. A containing groove is formed in the center of the bottom of the static iron core, an ejector pin is movably arranged in the containing groove, one end of the ejector pin penetrates through the containing groove, extends to the outer side of the static iron core and abuts against the top of the movable iron core, a spring is installed in the containing groove, and the two ends of the spring abut against the static iron core and the ejector pin respectively. According to the utility model, the spring is arranged in the static iron core, so that the movable iron core does not need to be slotted, the structure is very simple, complicated processing steps are not needed, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a moving iron core structure of an electromagnetic valve. Background Art

[0002] A solenoid valve is a basic automation component that uses electromagnetic force to control fluid flow. It is widely used in hydraulic, pneumatic and other industrial control systems. It is mainly composed of a coil, a moving iron core, a static iron core, a spring, a valve core, a valve seat and a housing.

[0003] like Figure 3 As shown, the solenoid valve in the prior art includes a static iron core 1 and a movable iron core 2. A thimble 4 is installed on the static iron core 1, and a spring 3 is sleeved on the outer side of the thimble 4. A receiving groove 5 for accommodating the spring 3 and the thimble 4 is provided on the movable iron core 2.

[0004] However, this design also requires slotting on the moving iron core, which has a relatively complex structure and cumbersome processing steps, resulting in high production costs. Utility Model Content

[0005] The purpose of the present utility model is to provide a solenoid valve movable iron core structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a solenoid valve moving iron core structure, comprising a solenoid valve housing, a coil frame arranged inside the solenoid valve housing, a coil wound on the outside of the coil frame, and a static iron core fixedly installed in the middle of the coil frame, a moving iron core is movably installed in the center of the coil frame and below the static iron core, a receiving groove is provided in the center of the bottom of the static iron core, a thimble is movably provided inside the receiving groove, one end of the thimble extends through the receiving groove to the outside of the static iron core and is pressed against the top of the moving iron core, a spring is installed inside the receiving groove, and the two ends of the spring are respectively pressed against the static iron core and the thimble.

[0007] As a preferred solution of the present invention, the moving iron core is a solid structure.

[0008] As a preferred solution of the present invention, both ends of the moving iron core are provided with chamfers.

[0009] As a preferred solution of the present invention, the static iron core, the ejector pin and the moving iron core are located on the same axis.

[0010] As a preferred solution of the present invention, a sealing ring is provided between the static iron core and the coil skeleton.

[0011] Compared with the prior art, the beneficial effects of the present invention are: by arranging the spring in the static iron core, the present invention eliminates the need for slotting on the moving iron core, resulting in a very simple structure, no need for complicated processing steps, and reduced production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the moving iron core of the utility model;

[0014] Figure 3 It is a structural diagram of a solenoid valve in the prior art.

[0015] In the figure: 1. static iron core; 2. moving iron core; 3. spring; 4. ejector pin; 5. receiving groove; 6. sealing ring; 7. solenoid valve housing; 8. coil frame; 9. coil. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figures 1 to 2 The utility model provides a technical solution: a solenoid valve moving iron core structure, including a solenoid valve housing 7, a coil skeleton 8 arranged inside the solenoid valve housing 7, a coil 9 wound on the outside of the coil skeleton 8, and a static iron core 1 fixedly installed in the middle of the coil skeleton 8. A moving iron core 2 is movably installed in the center of the coil skeleton 8 and below the static iron core 1. The moving iron core 2 does not have any slots, and the structure is very simple. It does not require complicated processing steps, which reduces production costs. A receiving groove 5 is provided in the center of the bottom of the static iron core 1. A thimble 4 is movably provided inside the receiving groove 5. One end of the thimble 4 is fixedly installed in the middle of the coil skeleton 8. It extends through the accommodating groove 5 to the outside of the static iron core 1 and is pressed against the top of the moving iron core 2. A spring 3 is installed inside the accommodating groove 5. When the coil 9 is energized, it drives the moving iron core 2 to move toward the static iron core 1. The moving iron core 2 pushes the ejector pin 4 to move. The ejector pin 4 compresses the spring 3. The spring 3 acts as a buffer to prevent the moving iron core 2 from damaging the static iron core 1 and prolong its service life. After the coil 9 is de-energized, the spring 3 pushes the moving iron core 2 toward the direction away from the static iron core 1 through the ejector pin 4, thereby increasing the reset speed of the moving iron core 2. The two ends of the spring 3 are respectively pressed against the static iron core 1 and the ejector pin 4.

[0018] The moving iron core 2 is a solid structure, which prolongs the service life of the moving iron core 2.

[0019] Both ends of the moving iron core 2 are provided with chamfers, which make it easier to install the moving iron core 2.

[0020] The static iron core 1 , the ejector pin 4 and the moving iron core 2 are located on the same axis.

[0021] A sealing ring 6 is provided between the static iron core 1 and the coil frame 8 , and the sealing ring 6 is used to ensure the sealing between the coil frame 8 and the static iron core 1 to prevent the medium from leaking therefrom.

[0022] Specifically, when the coil 9 is energized, it drives the moving iron core 2 to move toward the static iron core 1. The moving iron core 2 pushes the ejector pin 4 to move. The ejector pin 4 compresses the spring 3. The spring 3 acts as a buffer to prevent the moving iron core 2 from hitting the static iron core 1 with force, thereby shortening the life of the moving iron core 2. When the coil 9 is de-energized, the spring 3 bounces back and resets to push the ejector pin 4 to move. The ejector pin 4 pushes the moving iron core 2 to move away from the static iron core 1, thereby increasing the reset speed of the moving iron core 2.

[0023] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0025] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solenoid valve moving iron core structure, comprising a solenoid valve housing (7), a coil frame (8) disposed inside the solenoid valve housing (7), a coil (9) wound around the outside of the coil frame (8), and a stationary iron core (1) fixedly mounted in the middle of the coil frame (8), characterized in that: A moving iron core (2) is movably mounted at the center of the coil frame (8) and below the static iron core (1); a receiving groove (5) is provided at the center of the bottom of the static iron core (1); a thimble (4) is movably provided inside the receiving groove (5); one end of the thimble (4) passes through the receiving groove (5) and extends to the outside of the static iron core (1) and is pressed against the top of the moving iron core (2); a spring (3) is installed inside the receiving groove (5); two ends of the spring (3) are pressed against the static iron core (1) and the thimble (4) respectively.

2. The electromagnetic valve moving iron core structure according to claim 1, characterized in that: The moving iron core (2) is a solid structure.

3. The electromagnetic valve moving iron core structure according to claim 1, characterized in that: Both ends of the moving iron core (2) are provided with chamfers.

4. The electromagnetic valve moving iron core structure according to claim 1, characterized in that: The static iron core (1), the ejector pin (4) and the moving iron core (2) are located on the same axis.

5. The electromagnetic valve moving iron core structure according to claim 1, characterized in that: A sealing ring (6) is provided between the static iron core (1) and the coil frame (8).

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