Anti-loosening positioning device for metal winding mat

Abstract

The utility model relates to metal winding pad technical field, specifically disclose a kind of anti-loosening type positioning device of metal winding pad, including positioning ring, four arc grooves are equidistantly arranged in the inside of positioning ring, the inner chamber of arc groove is equipped with threaded hole, the both sides of arc groove inner chamber are equipped with limit hole, the inner chamber of arc groove is equipped with arc pressing plate, the both ends of arc pressing plate outside are equipped with movable rod. The utility model when needing to prevent the loosening of gasket, first, positioning ring is set on the gasket of winding completion, screw is rotated at this time, screw is driven to move inwards by threaded hole, arc pressing plate is pushed inwards by screw, limit hole and movable rod cooperate arc pressing plate and move stably inwards, the gasket of winding can be compacted by arc pressing plate, avoid positioning ring when using, positioning ring does not have to prevent the loosening function, and then lead to the condition that gasket can appear loosening in positioning ring.

Description

Technical Field

[0001] This utility model relates to the field of metal spiral wound pad technology, specifically to a metal spiral wound pad anti-loosening positioning device. Background Technology

[0002] Spiral wound gaskets are widely used sealing gaskets with advantages such as good resilience and sealing performance. They are mainly used for sealing flange connections in the petroleum, chemical, metallurgical, and power industries. Spiral wound gaskets are made by alternately overlapping and spirally winding metal strips with graphite, asbestos, PTFE, or asbestos-free soft materials. They are particularly suitable for applications with uneven loads, easily loosened joints, periodic temperature and pressure changes, and impacts or vibrations.

[0003] After the gaskets on the metal spiral wound pad are wound, a positioning ring is used to position the gaskets. However, the positioning ring does not have an anti-loosening function, which can cause the gaskets to come loose inside the positioning ring. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a metal spiral wound pad anti-loosening positioning device, which has the advantages of preventing the positioning ring from loosening, thus solving the problem that the positioning ring does not have anti-loosening properties.

[0005] This utility model discloses an anti-loosening positioning device for metal spiral wound gaskets, comprising a positioning ring. Four arc-shaped grooves are evenly spaced on the inner side of the positioning ring. Threaded holes are formed within the inner cavities of the arc-shaped grooves. Limiting holes are formed on both sides of the inner cavity of the arc-shaped grooves. An arc-shaped pressure plate is provided within the inner cavity of the arc-shaped grooves. Movable rods are provided at both ends of the outer sides of the arc-shaped pressure plate, with the outer sides of the movable rods penetrating and extending into the inner cavity of the limiting holes. A screw is provided within the inner cavity of the threaded holes. When anti-loosening of the gasket is required, the positioning ring is first placed on the wound gasket. Then, the screw is rotated, causing it to move inward through the threaded holes. The screw pushes the arc-shaped pressure plate inward, and the limiting holes and movable rods work together to stably move the arc-shaped pressure plate inward. The arc-shaped pressure plate then presses the wound gasket tightly, preventing the gasket from loosening within the positioning ring if it lacks anti-loosening functionality.

[0006] This utility model discloses an anti-loosening positioning device for a metal spiral wound pad. The movable rod is fixedly connected to a limiting plate on its outer side, and the diameter of the limiting plate is larger than the diameter of the movable rod. This utility model solves the problem of the movable rod accidentally coming out of the limiting hole, causing the arc-shaped pressure plate to fail, by fixing the limiting plate to the outer side of the movable rod and the limiting plate having a larger diameter than the movable rod. This achieves the effect of mechanically limiting the movable rod and ensuring that the arc-shaped pressure plate always maintains linkage with the positioning ring.

[0007] This utility model discloses an anti-loosening positioning device for metal spiral wound gaskets. The inner cavity of the arc-shaped groove is larger than the volume of the arc-shaped pressure plate, and the arc-shaped pressure plate can move inward within the arc-shaped groove. By using a structure where the inner cavity of the arc-shaped groove is larger than the volume of the arc-shaped pressure plate and allows it to move inward, the problem that the arc-shaped pressure plate cannot flexibly adjust the clamping force to adapt to the gasket size tolerance or thermal expansion and contraction is solved. This achieves the effect of providing adaptive clamping stroke and enhancing the dynamic locking ability of the gasket under different working conditions.

[0008] This utility model discloses a positioning device for preventing loosening of metal spiral wound pads. The inner side of the arc-shaped pressure plate is provided with anti-slip particles, and the number of anti-slip particles is not less than fifteen. By setting anti-slip particles on the inner side of the arc-shaped pressure plate, the problem of insufficient friction between the pressure plate and the pad and easy relative sliding caused by the smooth surface of the metal spiral wound pad is solved. This significantly increases the friction coefficient of the contact surface and prevents the pad from radially loosening in a vibration environment.

[0009] This utility model discloses a metal spiral wound gasket anti-loosening positioning device, wherein the outer side of the threaded hole is formed by a groove, and the diameter of the inner cavity of the groove is the same as the diameter of the screw head. By forming a groove on the outer side of the threaded hole with the same diameter as the screw head, the problem of the screw head protruding from the surface of the positioning ring and interfering with the flatness of the flange sealing surface is solved. This achieves the effect of completely accommodating the screw head, ensuring that the positioning device is flush with the flange end face after installation, and maintaining the sealing integrity.

[0010] This utility model discloses a metal spiral wound pad anti-loosening positioning device, wherein a hexagonal disassembly groove is provided on the outer side of the screw cavity, and the hexagonal disassembly groove is located at the center of the outer side of the screw cavity. By opening a hexagonal disassembly groove at the center of the top of the screw, the problem of traditional slotted and Phillips head screws being prone to slippage and wear and difficult to operate in confined spaces is solved. This achieves compatibility with standard hexagonal tools, high torque disassembly efficiency, and extended screw service life.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. When this utility model is needed to prevent the gasket from loosening, the positioning ring is first placed on the wound gasket. Then, the screw is rotated, and the screw moves inward through the threaded hole. The screw pushes the arc-shaped pressure plate inward. The arc-shaped pressure plate moves steadily inward through the limiting hole and the movable rod. The arc-shaped pressure plate can then press the wound gasket tightly, avoiding the situation where the positioning ring does not have the function of preventing loosening during use, which would cause the gasket to loosen inside the positioning ring.

[0013] 2. This utility model solves the problem of the arc-shaped pressure plate failing due to the movable rod accidentally coming out of the limiting hole by fixing a limiting plate on the outside of the movable rod and the limiting plate having a diameter larger than the movable rod. It achieves the effect of mechanically limiting the movable rod and ensuring that the arc-shaped pressure plate always maintains linkage with the positioning ring.

[0014] By using a structure where the inner volume of the arc groove is larger than that of the arc pressure plate and allows it to move inward, the problem of the arc pressure plate being unable to flexibly adjust the clamping force to adapt to the dimensional tolerances or thermal expansion and contraction of the gasket is solved, thereby achieving the effect of providing adaptive clamping stroke and enhancing the dynamic locking ability of the gasket under different working conditions.

[0015] By setting anti-slip particles on the inner side of the arc-shaped pressure plate, the problem of insufficient friction between the pressure plate and the gasket due to the smooth surface of the metal spiral wound gasket is solved, and the gasket is easy to slide relative to the plate. This achieves the effect of significantly increasing the friction coefficient of the contact surface and preventing the gasket from loosening radially in a vibration environment.

[0016] By creating a groove on the outside of the threaded hole that matches the diameter of the screw head, the problem of the screw head protruding from the surface of the positioning ring and interfering with the flatness of the flange sealing surface is solved. This achieves the effect of fully accommodating the screw head, ensuring that the positioning device is flush with the flange end face after installation, and maintaining the integrity of the seal.

[0017] By creating a hexagonal slot at the center of the screw top, the design solves the problems of slippage and wear in traditional slotted and Phillips head screws, as well as the difficulty in operating them in confined spaces. This design achieves compatibility with standard hexagonal tools, high torque disassembly efficiency, and extended screw lifespan. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

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

[0020] Figure 2 This is a schematic cross-sectional view of the positioning ring structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the arc-shaped pressure plate and the positioning ring structure before screw installation in this utility model;

[0022] Figure 4 This is a schematic diagram of the arc-shaped pressure plate and screw structure of this utility model.

[0023] In the diagram: 1. Positioning ring; 2. Screw; 3. Arc-shaped pressure plate; 4. Limiting hole; 5. Movable rod; 6. Groove; 7. Arc-shaped groove; 8. Threaded hole; 9. Hexagonal disassembly groove; 10. Limiting plate. Detailed Implementation

[0024] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0025] Please see Figure 1-4 This utility model discloses an anti-loosening positioning device for a metal spiral wound gasket, comprising a positioning ring 1. Four arc-shaped grooves 7 are evenly spaced on the inner side of the positioning ring 1. Threaded holes 8 are formed within the inner cavity of each arc-shaped groove 7. Limiting holes 4 are formed on both sides of the inner cavity of each arc-shaped groove 7. An arc-shaped pressure plate 3 is provided within the inner cavity of each arc-shaped pressure plate 3. Movable rods 5 are provided at both ends of the outer side of the arc-shaped pressure plate 3, and the outer sides of the movable rods 5 penetrate and extend into the inner cavity of the limiting holes 4. Screws 2 are provided within the inner cavity of the threaded holes 8. This utility model allows for the positioning of the gasket when it is necessary to adjust its position. When the gasket is used to prevent loosening, the positioning ring 1 is first placed on the wound gasket. Then, the screw 2 is rotated, and the screw 2 is moved inward through the threaded hole 8. The screw 2 pushes the arc-shaped pressure plate 3 inward. The arc-shaped pressure plate 3 moves inward stably through the limiting hole 4 and the movable rod 5. The arc-shaped pressure plate 3 can then press the wound gasket tightly, thus preventing the gasket from loosening inside the positioning ring 1 if the positioning ring 1 does not have the function of preventing loosening.

[0026] A limiting plate 10 is fixedly connected to the outer side of the movable rod 5, and the diameter of the limiting plate 10 is larger than the diameter of the movable rod 5. This utility model solves the problem of the movable rod 5 accidentally coming out of the limiting hole 4, causing the arc-shaped pressure plate 3 to fail, by fixing the limiting plate 10 to the outer side of the movable rod 5 and the limiting plate 10 having a larger diameter than the movable rod 5. This achieves the effect of mechanically limiting the movable rod 5 and ensuring that the arc-shaped pressure plate 3 always maintains linkage with the positioning ring 1.

[0027] The inner cavity of the arc groove 7 is larger than the volume of the arc pressure plate 3, and the arc pressure plate 3 can move inward within the arc groove 7. By using the structure that the inner cavity of the arc groove 7 is larger than the volume of the arc pressure plate 3 and allows it to move inward, the problem that the arc pressure plate 3 cannot flexibly adjust the clamping force to adapt to the dimensional tolerance of the gasket or thermal expansion and contraction is solved, thereby achieving the effect of providing adaptive clamping stroke and enhancing the dynamic locking ability of the gasket under different working conditions.

[0028] The inner side of the arc-shaped pressure plate 3 is provided with anti-slip particles, and the number of anti-slip particles is not less than fifteen. By setting anti-slip particles on the inner side of the arc-shaped pressure plate 3, the problem of insufficient friction between the pressure plate and the gasket and easy relative sliding caused by the smooth surface of the metal winding pad is solved, and the friction coefficient of the contact surface is significantly increased, thus preventing the gasket from radially loosening in the vibration environment.

[0029] The outer side of the threaded hole 8 is opened in the groove 6, and the diameter of the inner cavity of the groove 6 is the same as the diameter of the screw head 2. By opening the groove 6 on the outer side of the threaded hole 8 with the same diameter as the screw head 2, the problem of the screw head 2 protruding from the surface of the positioning ring 1 and interfering with the flatness of the flange sealing surface is solved. This achieves the goal of fully accommodating the screw head 2, ensuring that the positioning device is flush with the flange end face after installation, and maintaining the sealing integrity.

[0030] The outer side of the inner cavity of screw 2 is provided with a hexagonal disassembly groove 9, and the hexagonal disassembly groove 9 is located at the center of the outer side of the inner cavity of screw 2. By opening the hexagonal disassembly groove 9 at the center of the top of screw 2, the problem of traditional slotted and cross screws 2 being prone to slipping and wear and difficult to operate in narrow spaces is solved. It achieves compatibility with standard internal hex tools, realizes high torque disassembly efficiency and extends the service life of screw 2.

[0031] When using this utility model: When it is necessary to prevent the gasket from loosening, first put the positioning ring 1 on the wound gasket. At this time, rotate the screw 2, and drive the screw 2 to move inward through the threaded hole 8. The screw 2 pushes the arc-shaped pressure plate 3 to move inward. The arc-shaped pressure plate 3 moves inward stably through the limiting hole 4 and the movable rod 5. The arc-shaped pressure plate 3 can press the wound gasket tightly, which avoids the situation where the positioning ring 1 does not have the function of preventing loosening, thus preventing the gasket from loosening inside the positioning ring 1.

[0032] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A positioning device for preventing loosening of a metal spiral wound pad, comprising a positioning ring (1), characterized in that: The positioning ring (1) has four arc-shaped grooves (7) evenly spaced on its inner side. The inner cavity of the arc-shaped groove (7) has a threaded hole (8). Limiting holes (4) are opened on both sides of the inner cavity of the arc-shaped groove (7). The inner cavity of the arc-shaped groove (7) is provided with an arc-shaped pressure plate (3). Both ends of the outer side of the arc-shaped pressure plate (3) are provided with movable rods (5). The outer side of the movable rods (5) penetrates and extends to the inner cavity of the limiting hole (4). The inner cavity of the threaded hole (8) is provided with a screw (2).

2. The anti-loosening positioning device for a metal spiral wound pad according to claim 1, characterized in that: A limiting plate (10) is fixedly connected to the outside of the movable rod (5), and the diameter of the limiting plate (10) is greater than the diameter of the movable rod (5).

3. The anti-loosening positioning device for a metal spiral wound pad according to claim 1, characterized in that: The inner cavity of the arc groove (7) is larger than the volume of the arc pressure plate (3), and the arc pressure plate (3) can move inward within the arc groove (7).

4. The anti-loosening positioning device for a metal spiral wound pad according to claim 1, characterized in that: The inner side of the arc-shaped pressure plate (3) is provided with anti-slip particles, and the number of anti-slip particles is not less than fifteen.

5. The anti-loosening positioning device for a metal spiral wound pad according to claim 1, characterized in that: The threaded hole (8) is opened on the outside of the groove (6), and the diameter of the inner cavity of the groove (6) is the same as the diameter of the screw head (2).

6. The anti-loosening positioning device for a metal spiral wound pad according to claim 1, characterized in that: The screw (2) has a hexagonal disassembly groove (9) on the outer side of its inner cavity, and the hexagonal disassembly groove (9) is located at the center of the outer side of the screw (2).

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