A cylinder magnetic ring
By dividing the large magnetic ring into small sector magnets and setting sealing grooves and sealing rings on the cylinder head, the problem of the magnetic ring being easily broken was solved, achieving stable operation and accurate detection of the cylinder, and improving the level of automation control in steelmaking production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANGANG STEEL CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-06-30
AI Technical Summary
Existing cylinders with magnetic rings are prone to breakage at the steelmaking site, leading to unstable detection signals and affecting the automation process of steelmaking and the service life of the cylinders.
The large magnetic ring is divided into several small sector magnets along the circumference. The magnetic force between the magnets is used to assemble them into a magnetic ring, which increases stability. A sealing groove and a sealing ring are set on the cylinder head to improve the tightness of the installation and protection.
It improves the stability and reliability of the cylinder under complex working conditions, reduces the risk of magnetic ring breakage, ensures the stability of the test and the service life of the cylinder, and improves the efficiency and quality control of steelmaking production.
Smart Images

Figure CN224432996U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metallurgical machinery technology, and more specifically, to a cylinder magnetic ring. Background Technology
[0002] In the steelmaking industry, cylinders with magnetic rings are key actuators widely used in various automated control systems. Through the magnetic ring and corresponding magnetic detection devices, they achieve precise detection of the cylinder piston position, providing crucial positional feedback information for many operational steps in the steelmaking process. This ensures precise control and efficient operation of the entire production process, guaranteeing the stability and safety of the steelmaking process.
[0003] Currently, the most common cylinders used in steel mills with magnetic rings typically employ a design where a single hard magnetic ring is divided into two semi-circular rings. During cylinder assembly, these two semi-circular rings are installed in slots within the cylinder head. Simultaneously, a specialized magnetic detection device is installed on the outer wall of the cylinder body. The main function of this device is to detect the magnetic signals emitted by the magnetic rings, thereby determining the precise position of the piston and enabling accurate monitoring and control of its movement.
[0004] However, existing cylinders with magnetic rings have several drawbacks. Firstly, hard magnetic rings are prone to breakage due to impacts and other factors experienced by the cylinder under complex and harsh conditions in steelmaking. Once the ring breaks, the magnetic detection device may fail to detect the magnetic signal, resulting in inaccurate piston position information and affecting the normal operation of the cylinder and the automation of the entire steelmaking process. Secondly, when a hard magnetic ring breaks, the two ends at the break point repel each other, increasing the ring's diameter and making it more susceptible to friction and collision with the cylinder wall, causing wear and affecting the cylinder's lifespan and sealing performance. Furthermore, while flexible magnetic rings exist, their relatively weaker magnetism leads to unstable signals detected by the magnetic detection device, also increasing the risk of detection errors and introducing instability into steelmaking production. In severe cases, this could even cause accidents affecting production and resulting in economic losses for the company. Utility Model Content
[0005] To address the aforementioned technical problem of existing cylinder magnetic rings being prone to breakage, a new cylinder magnetic ring is provided. This invention divides the entire circumference of a large magnetic ring into several smaller magnets. These smaller magnets attract each other and assemble to form the complete magnetic ring. After assembly, the smaller individual magnets make the ring less prone to breakage, significantly improving the stability of the cylinder during use.
[0006] The technical means adopted in this utility model are as follows:
[0007] A cylinder magnetic ring includes several identical sector magnets, which are combined to form a magnetic ring structure. The sector magnets are magnetically connected to the sector magnets on both sides. The lower and upper parts of the sector magnets are arc-shaped structures that convex to the same side, and the two sides of the sector magnets are respectively connected to the two sides of the lower and upper arc-shaped structures.
[0008] Furthermore, the magnetic ring structure is snapped into the magnetic ring slot of the cylinder head, and a lever is connected to one side of the cylinder head.
[0009] Furthermore, the cylinder head is provided with a first sealing groove and a second sealing groove, with the side away from the lever as the front side. The first sealing groove is located on the front side of the magnetic ring slot, and the second sealing groove is located on the rear side of the magnetic ring slot.
[0010] Furthermore, sealing rings are provided in the first sealing groove and the second sealing groove.
[0011] Furthermore, the sealing ring is made of rubber.
[0012] Furthermore, the width of the central part of the sector magnet is 8mm, the height of the sector magnet is 15mm, and the thickness of the sector magnet is 5mm.
[0013] Compared with the prior art, the present invention has the following advantages:
[0014] This invention innovatively divides a traditional large magnetic ring into multiple smaller magnets along its circumference. These smaller magnets are then assembled using the attraction between them to form a complete magnetic ring, effectively solving the problem of fragile magnetic rings in existing technologies. Because each small magnet is smaller in size, its internal stress distribution is more dispersed when subjected to external forces such as impacts, significantly enhancing its impact resistance. This greatly reduces the risk of the magnetic ring breaking due to impact, thereby significantly improving the working stability and reliability of the cylinder under complex steelmaking conditions and reducing the probability of detection failures and production accidents caused by magnetic ring breakage.
[0015] This invention features a magnetic ring assembled from multiple small magnets that attract each other, resulting in a more secure installation. This tight installation ensures the magnetic ring maintains a stable position and shape within the cylinder head slot, avoiding the problems of increased ring diameter and wear on the cylinder wall caused by mutual repulsion between the two ends after ring breakage, as seen in existing technologies. This effectively protects the integrity of the cylinder's inner wall, extends its service life, and ensures the overall sealing performance and operational accuracy of the cylinder.
[0016] This invention optimizes the structural design of the magnetic ring by using a combination of multiple small magnets. While ensuring that the overall magnetic properties of the magnetic ring meet the requirements of the magnetic detection device, it overcomes the problems of poor magnetic properties and unstable detection of existing flexible magnetic rings. This ensures the stability and accuracy of cylinder piston position detection, provides precise and reliable position feedback information for the automated control of steelmaking production, and further improves the production efficiency and quality control level of the entire steelmaking process. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the installation position of this utility model.
[0019] Figure 2 This is a schematic diagram of the magnetic ring for this practical cylinder.
[0020] Figure 3 This is a schematic diagram of the cylinder head of the present invention.
[0021] Figure 4 This is a front view of the sector-shaped magnet of this utility model.
[0022] Figure 5 This is a side view of the sector-shaped magnet of this utility model.
[0023] Figure 6 This is a top view of the sector magnet of this utility model.
[0024] In the diagram: 1. Sector magnet; 2. Magnetic ring structure; 3. Magnetic ring slot; 4. Cylinder head; 5. Lever; 6. First sealing groove; 7. Second sealing groove. Detailed Implementation
[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0029] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0030] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0031] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0032] like Figure 1-6 As shown, this utility model provides a cylinder magnetic ring, including several identical sector magnets 1. These sector magnets 1 are combined to form a magnetic ring structure 2. Each sector magnet 1 is magnetically connected to two other sector magnets 1 on either side. The lower and upper parts of each sector magnet 1 are arc-shaped structures convex to the same side, and the two sides of each sector magnet 1 are respectively connected to the two sides of the lower and upper arc-shaped structures. The magnetic ring structure 2 is snapped into a magnetic ring slot 3 in the cylinder head 4. A lever 5 is connected to one side of the cylinder head 4. The cylinder head is provided with a first sealing groove 6 and a second sealing groove 7, with the side furthest from the lever 5 as the front side. The first sealing groove 6 is located on the front side of the magnetic ring slot 5, and the second sealing groove 7 is located on the rear side of the magnetic ring slot 5. A sealing ring is provided in both the first sealing groove 6 and the second sealing groove 7. The sealing ring is made of rubber.
[0033] The key innovation of this invention lies in its innovative decomposition of the traditional large magnetic ring into several identical sector-shaped magnets. These sector-shaped magnets have unique shape features: both their lower and upper parts adopt arc-shaped structures that bulge to the same side, and the two sides of the sector-shaped magnet are respectively connected to the two sides of the lower and upper arc-shaped structures. This ingenious shape design allows each sector-shaped magnet to fit tightly against its adjacent sector-shaped magnets.
[0034] In the actual assembly process, multiple identical sector magnets are arranged sequentially along the circumference. Utilizing the magnetism inherent in the magnets themselves, adjacent sector magnets attract each other and bond tightly, ultimately forming a complete and stable magnetic ring structure. This assembly method is not only simple to operate, but also significantly improves the structural stability of the entire magnetic ring due to the characteristics of magnetic connection.
[0035] The magnetic ring structure formed by this invention can be precisely engaged in the magnetic ring slot of the cylinder head. A lever is connected to one side of the cylinder head, and the magnetic ring slot is located in a suitable position on the cylinder head, ensuring that the magnetic ring can maintain a stable state after installation without loosening or displacement, thus providing a reliable physical basis for subsequent magnetic testing.
[0036] This invention features a first sealing groove and a second sealing groove on the cylinder head. With the side furthest from the lever as the front side, the first sealing groove is located in front of the magnetic ring slot, and the second sealing groove is located behind the magnetic ring slot. Sealing rings made of rubber are installed within these sealing grooves. The rubber sealing rings possess good elasticity and wear resistance, effectively filling the minute gaps between the magnetic ring and the cylinder head, preventing liquid or gas leakage. They also provide some shock absorption and cushioning, further enhancing the overall performance and service life of the cylinder.
[0037] The fan-shaped magnet is designed with a width of 8mm, a height of 15mm, and a thickness of 5mm. These dimensions are precisely calculated and optimized based on the cylinder specifications and magnetic detection requirements of actual applications. During the manufacturing process, the dimensions of the fan-shaped magnet can be adjusted according to the specific dimensions and performance requirements of different cylinders to ensure that the magnetic ring can perfectly fit various cylinder models and meet diverse industrial application scenarios.
[0038] Through the detailed description of the above specific embodiments, the cylinder magnetic ring of this utility model has shown significant advantages and innovations in terms of structural design, assembly process and cooperation with the cylinder head. It effectively solves many problems existing in the prior art and provides a reliable solution for the stable operation and accurate detection of cylinders in the steelmaking field.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A magnetic cylinder ring, characterized by: It includes several identical sector magnets (1), which are combined to form a magnetic ring structure (2). The sector magnets (1) are connected to the sector magnets (1) on both sides by magnetic force. The lower and upper parts of the sector magnets (1) are arc-shaped structures that bulge to the same side. The two sides of the sector magnets (1) are respectively connected to the two sides of the lower and upper arc-shaped structures.
2. The magnetic cylinder of claim 1, wherein, The magnetic ring structure (2) is snapped into the magnetic ring slot (3) of the cylinder head (4), and a lever (5) is connected to one side of the cylinder head (4).
3. The magnetic cylinder of claim 2, wherein, The cylinder head is provided with a first sealing groove (6) and a second sealing groove (7), with the side away from the lever (5) as the front side. The first sealing groove (6) is located on the front side of the magnetic ring slot (3), and the second sealing groove (7) is located on the rear side of the magnetic ring slot (3).
4. The magnetic cylinder of claim 3, wherein, A sealing ring is provided in the first sealing groove (6) and the second sealing groove (7).
5. The magnetic cylinder of claim 4, wherein, The sealing ring is made of rubber.
6. The magnetic cylinder of claim 5, wherein, The fan-shaped magnet has a width of 8mm at the center, a height of 15mm, and a thickness of 5mm.