Polytetrafluoroethylene check ring

Abstract

The utility model relates to the technical field of sealing check rings, in particular to a polytetrafluoroethylene check ring which comprises a check ring body, a second groove is formed in the check ring body, a hoop is installed in the second groove, one end of the hoop is fixedly connected with a limiting block, the other end of the hoop is provided with a limiting groove, and the limiting block is fixedly connected with the limiting groove. The limiting block is clamped with the limiting groove; the hoop is installed outside the check ring body, the two ends of the hoop are pulled away from each other during installation, the check ring body can be rapidly sleeved with the sealing groove, installation is convenient and flexible, the installation efficiency is improved, one end of the hoop is fixedly connected with the limiting block, the other end of the hoop is provided with the limiting groove, and the check ring body is installed more firmly and stably.

Description

Technical Field

[0001] The utility model relates to a retaining ring, in particular to a polytetrafluoroethylene retaining ring, belonging to the technical field of sealing retaining rings. Background Technique

[0002] As a high-performance sealing element, the polytetrafluoroethylene retaining ring has a wide range of applications in various industrial fields. Its excellent properties such as high temperature resistance, high pressure resistance, corrosion resistance and wear resistance make it an ideal choice for compensating the pressure in cylinders, hydraulic systems or valves without losing its sealing function. Especially in the hydraulic sealing system, the polytetrafluoroethylene retaining ring can be used in cooperation with low-pressure-bearing sealing rings such as O-rings, star rings and U-rings to improve and extend the sealing pressure-bearing capacity and service life of such sealing rings.

[0003] However, the traditional retaining ring has a closed annular structure. When installing the retaining ring, a rope needs to be put on the retaining ring, and the retaining ring is pulled into the sealing groove by means of the rope. And after the retaining ring is sleeved in the sealing groove of the equipment, when it needs to be disassembled and replaced, the shielding object above the retaining ring needs to be disassembled before the original retaining ring can be disassembled. The operation is relatively cumbersome and not flexible enough, resulting in poor convenience of installing the retaining ring and affecting the installation efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a polytetrafluoroethylene retaining ring to solve the above problems. By installing a hoop outside the retaining ring body, when installing, the two ends of the hoop are pulled in the direction away from each other, and the retaining ring body can be quickly sleeved in the sealing groove. The installation is convenient and flexible, improving the installation efficiency. And one end of the hoop is fixedly connected with a limiting block, and the other end is provided with a limiting groove, making the installation of the retaining ring body more firm and stable.

[0005] The utility model realizes the above purpose through the following technical solutions. A polytetrafluoroethylene retaining ring includes a retaining ring body. A second groove is opened on the retaining ring body, and a hoop is installed in the second groove. One end of the hoop is fixedly connected with a limiting block, and the other end of the hoop is provided with a limiting groove, and the limiting block is engaged with the limiting groove.

[0006] Preferably, the cross-section of the retaining ring body is in an "L" shape, and the thickness of the retaining ring body is greater than the thickness of the hoop.

[0007] Preferably, the limiting block is in a trapezoidal structure, and the limiting groove is in a trapezoidal structure.

[0008] Preferably, one end of the retaining ring body is fixedly connected with a first overlapping joint, and the other end of the retaining ring body is fixedly connected with a second overlapping joint, and the first overlapping joint and the second overlapping joint are in contact with each other.

[0009] Preferably, a spring piece is installed at one end of the hoop away from the limit block. The bottom end of the spring piece abuts against the limit block, and the top end of the spring piece abuts against the retainer ring body.

[0010] Preferably, two first grooves are formed in the hoop, and the two first grooves are symmetrically distributed.

[0011] Preferably, the cross section of the first groove is in an "L" shape, and the two first grooves are located on both sides of the limit block.

[0012] The beneficial effects of the present utility model are as follows: a second groove is formed in the retainer ring body, and a hoop is installed in the second groove. One end of the hoop is fixedly connected with a limit block, and a limit groove is formed at the other end of the hoop. The limit block is engaged with the limit groove; by installing the hoop outside the retainer ring body and pulling the two ends of the hoop away from each other during installation, the retainer ring body can be quickly sleeved in the sealing groove, and the installation is convenient and flexible, improving the installation efficiency. Moreover, one end of the hoop is fixedly connected with a limit block, and the other end is provided with a limit groove, making the installation of the retainer ring body more firm and stable. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is Figure 1 the enlarged schematic diagram of part A shown in;

[0015] Figure 3 is a schematic diagram of the connection structure between the first joint and the second joint of the present utility model;

[0016] Figure 4 is a schematic diagram of the connection structure between the retainer ring body and the hoop of the present utility model;

[0017] Figure 5 is a schematic diagram of the connection structure between the first joint and the retainer ring body of the present utility model.

[0018] In the figure: 1, retainer ring body; 2, hoop; 3, first joint; 4, second joint; 5, limit block; 6, limit groove; 7, first groove; 8, spring piece; 9, second groove. Detailed Embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] See also Figures 1 - 5 As shown, a polytetrafluoroethylene retaining ring includes a retaining ring body 1, a second groove 9 is formed on the retaining ring body 1, a clamp 2 is installed in the second groove 9, one end of the clamp 2 is fixedly connected to a limiting block 5, and the other end of the clamp 2 is formed with a limiting groove 6, and the limiting block 5 is engaged with the limiting groove 6.

[0021] As a technical optimization solution of the present utility model, the cross-section of the retaining ring body 1 is an "L"-shaped structure, and the thickness of the retaining ring body 1 is greater than the thickness of the clamp 2; the thickness of the retaining ring body 1 is greater than the thickness of the clamp 2, which can avoid the sealing performance of the retaining ring body 1 being affected by the extrusion deformation of the clamp 2.

[0022] As a technical optimization solution of the utility model, the limit block 5 is in a trapezoidal structure, and the limit groove 6 is in a trapezoidal structure; the limit block 5 cannot slip off from the horizontal direction of the clamp 2, thereby increasing the stability of the installation of the limit block 5.

[0023] As a technical optimization solution of the utility model, one end of the retaining ring body 1 is fixedly connected to a first lap joint 3, and the other end of the retaining ring body 1 is fixedly connected to a second lap joint 4, and the first lap joint 3 and the second lap joint 4 are in conflict with each other; the first lap joint 3 and the second lap joint 4 are in conflict with each other, so that the retaining ring body 1 maintains a sealed state, which facilitates the installation of the retaining ring body 1 and improves the sealing effect of the retaining ring body 1.

[0024] As a technical optimization solution of the utility model, a spring piece 8 is installed at the end of the clamp 2 away from the limit block 5, the bottom end of the spring piece 8 is in conflict with the limit block 5, and the top end of the spring piece 8 is in conflict with the retaining ring body 1; when the retaining ring body 1 is sleeved in the sealing groove of the equipment, the bottom ends of the retaining ring body 1 and the second lap joint 4 are in conflict with the spring piece 8 and move toward the direction of the limit block 5, so that the spring piece 8 is pressed against the limit block 5, further increasing the stability of the limit block 5.

[0025] As a technical optimization solution of the utility model, two first grooves 7 are provided on the clamp 2, the two first grooves 7 are symmetrically distributed, the cross-section of the first groove 7 is an "L"-shaped structure, and the two first grooves 7 are located on both sides of the limit block 5; the setting of the first groove 7 facilitates the opening of the clamp 2 during operation, thereby facilitating the installation of the clamp 2 and the retaining ring body 1; and the first groove 7 is an "L"-shaped structure, which is convenient for the thumb to exert force on the clamp 2.

[0026] When the utility model is in use, first, the pliers clamp the retaining ring body 1. Then, the two pliers are respectively inserted into the two first grooves 7. Next, the retaining hoop 2 is pulled in the direction away from each other of the two first grooves 7, so that the limiting block 5 and the limiting groove 6 are no longer engaged, and at the same time, the first joint 3 and the second joint 4 no longer abut against each other, thereby opening the retaining ring body 1. Then, the retaining ring body 1 is sleeved in the sealing groove of the device. Next, the retaining hoop 2 is squeezed, so that the limiting block 5 at one end of the retaining hoop 2 and the limiting groove 6 at the other end gradually approach each other, thereby engaging the limiting block 5 and the limiting groove 6. At this time, the first joint 3 and the second joint 4 on the retaining ring body 1 abut against each other, thereby installing the retaining ring body 1 in the sealing groove of the device. The operation is simple and flexible, which is convenient for the installation and disassembly of the retaining ring body 1, improves the installation efficiency of the retaining ring body 1, and the arrangement of the limiting block 5 and the limiting groove 6 increases the firmness of the installation of the retaining hoop 2 and the retaining ring body 1; after the retaining ring body 1 is sleeved in the sealing groove of the device, the retaining ring body 1 and the second joint 4 abut against the elastic sheet 8 and move in the direction of the limiting block 5, so that the elastic sheet 8 abuts tightly against the limiting block 5, further increasing the stability of the limiting of the limiting block 5; the thickness of the retaining ring body 1 is greater than the thickness of the retaining hoop 2, which can avoid affecting the sealing performance of the retaining ring body 1 due to the extrusion deformation of the retaining hoop 2; the first joint 3 and the second joint 4 abut against each other, keeping the retaining ring body 1 in a sealed state, which is convenient for the installation of the retaining ring body 1 and at the same time makes the sealing effect of the retaining ring body 1 good.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0028] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A polytetrafluoroethylene retaining ring, comprising a retaining ring body (1), characterized in that: The retaining ring body (1) is provided with a second groove (9), a clamp (2) is installed in the second groove (9), one end of the clamp (2) is fixedly connected to a limiting block (5), the other end of the clamp (2) is provided with a limiting groove (6), and the limiting block (5) is engaged with the limiting groove (6).

2. A polytetrafluoroethylene retaining ring according to claim 1, characterized in that: The cross section of the retaining ring body (1) is in an "L"-shaped structure, and the thickness of the retaining ring body (1) is greater than the thickness of the clamp (2).

3. A polytetrafluoroethylene retaining ring according to claim 1, characterized in that: The limiting block (5) is in a trapezoidal structure, and the limiting groove (6) is in a trapezoidal structure.

4. A polytetrafluoroethylene retaining ring according to claim 1, characterized in that: One end of the retaining ring body (1) is fixedly connected to a first lap joint (3), and the other end of the retaining ring body (1) is fixedly connected to a second lap joint (4), and the first lap joint (3) and the second lap joint (4) are in conflict with each other.

5. A polytetrafluoroethylene retaining ring according to claim 1, characterized in that: A spring sheet (8) is installed at one end of the clamp (2) away from the limit block (5); the bottom end of the spring sheet (8) contacts the limit block (5), and the top end of the spring sheet (8) contacts the retaining ring body (1).

6. The polytetrafluoroethylene retaining ring according to claim 5, wherein: The hoop (2) is provided with two first grooves (7), and the two first grooves (7) are symmetrically distributed.

7. The polytetrafluoroethylene retaining ring according to claim 6, wherein: The cross section of the first groove (7) is in an "L"-shaped structure, and the two first grooves (7) are located on both sides of the limiting block (5).

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