Teflon fully-coated O-shaped sealing ring auxiliary tool

Abstract

The utility model discloses a Teflon fully-coated O-shaped sealing ring auxiliary tool which comprises a connecting plate, and further comprises supporting plates, supporting assemblies and a uniform feeding assembly, one end of each supporting plate is movably connected to the end face of the connecting plate, and the supporting plates are annularly and uniformly arranged at intervals with the central axis of the connecting plate as the center; the supporting assembly penetrates through the connecting plate to be movably connected to the center of the connecting plate and is in sliding fit with the inner walls of the annularly-arranged supporting plates, the upper walls of the supporting plates are movably connected with a pushing assembly, the pushing assembly slides in the axial direction of the connecting plate through a uniform feeding assembly, and the uniform feeding assembly is arranged in the connecting plate in a sliding mode. And one end of the propelling assembly is contacted. The utility model belongs to the technical field of sealing ring mounting tools, and particularly relates to a teflon fully-coated O-shaped sealing ring auxiliary tool which is used for mounting a sealing ring on the outer wall of a shaft end, improving the uniformity of thrust applied to movement of the sealing ring and avoiding local distortion and deformation of the sealing ring caused by uneven stress.

Description

Technical Field

[0001] This utility model belongs to the technical field of sealing ring installation tools, and in particular relates to an auxiliary tool for a PTFE fully encapsulated O-ring seal. Background Technology

[0002] PTFE-coated O-rings typically consist of an inner elastomer (such as rubber) and an outer, fully encapsulated layer of polytetrafluoroethylene (PTFE), combining elasticity with chemical resistance and high-temperature resistance. During installation, because the PTFE layer is relatively hard, a lubricant is used to reduce friction, while ensuring even force application and avoiding scratches.

[0003] Existing installation aids for PTFE fully encapsulated O-rings include conical guide sleeves, flaring tools, and hydraulic / pneumatic presses. Hydraulic / pneumatic presses are used for automated installation in high-pressure scenarios and require the use of custom molds, resulting in higher costs. When conical guide sleeves and flaring tools smoothly guide the O-ring into the groove, they cannot guarantee uniform thrust applied to the O-ring, which can easily cause twisting and lead to a decrease in sealing performance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to improve the uniformity of the thrust on the outer wall of the shaft end for the installation of the sealing ring, and to avoid local twisting and deformation of the sealing ring due to uneven force.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: A PTFE fully encapsulated O-ring auxiliary tool, comprising a connecting plate, a support plate, a support assembly, and a uniform feeding assembly. One end of the support plate is movably connected to the end face of the connecting plate and arranged in a ring with uniform intervals around the central axis of the connecting plate. The support assembly passes through the connecting plate and is movably connected to the center of the connecting plate, and slides against the inner wall of the ring-arranged support plate. A pushing assembly is movably connected to the upper wall of the support plate. The pushing assembly slides along the axial direction of the connecting plate through the uniform feeding assembly. The uniform feeding assembly is slidably disposed inside the connecting plate and contacts one end of the pushing assembly.

[0006] Furthermore, the middle section of the support plate is bent, and the end of the support plate away from the connecting plate is perpendicular to the end face of the connecting plate.

[0007] Furthermore, the support assembly includes a stud, a movable plate, and a handle. The stud is threadedly connected to the center of the connecting plate, and one end of the stud extends to the center of the ring-shaped support plate. The movable plate is rotatably connected to the end face of the stud and slides against the inner wall of the support plate. The handle is fixedly connected to the end of the stud away from the support plate, and the corner of the movable plate near the connecting plate is chamfered.

[0008] Furthermore, the propulsion assembly includes a vertical plate, a sliding rod, and a push plate. The vertical plate is fixedly connected to the bend in the outer wall of the support plate. The sliding rod passes through the vertical plate and is slidably disposed within the vertical plate. The push plate is fixedly connected to the end face of the sliding rod away from the connecting plate.

[0009] Furthermore, a baffle is fixedly connected to the end of the slide rod away from the push plate, and a support spring is sleeved on the outer wall of the slide rod. The support spring is located between the upright plate and the baffle and is used for the reset adjustment of the push plate.

[0010] Furthermore, the uniform feeding assembly includes a push rod, a first connecting ring, and a second connecting ring. The push rod slides through the outer circumference of the end face of the connecting plate. The push rods are arranged in a ring with uniform intervals around the stud. The first connecting ring is fixedly connected to the end of the push rod near the vertical plate, and the second connecting ring is fixedly connected to the end of the push rod near the connecting plate.

[0011] With the above structure, the beneficial effects of this utility model are as follows: For the installation of the PTFE fully encapsulated O-ring seal on the outer wall of the shaft end, the support assembly is adjusted by moving along the axial direction of the connecting plate, so that the outer wall of the ring-arranged support plate evenly expands the seal ring, and the inner wall of the support plate contacts the outer wall of the shaft end. With the lubricant acting between the seal ring and the support plate, the uniform feeding assembly is pushed to indirectly contact the end face of the seal ring. By pushing multiple propulsion assemblies to contact the end face of the seal ring, the seal ring is simultaneously stressed at multiple points, increasing the uniformity of stress. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] Figure 1 This is a schematic diagram of the overall structure of an auxiliary tool for a PTFE-coated O-ring seal proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the uniform feeding component of a PTFE-coated O-ring auxiliary tool proposed in this utility model.

[0015] Figure 3 This is a half-sectional view of an auxiliary tool for a PTFE-coated O-ring seal proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the internal structure of an auxiliary tool for a PTFE-coated O-ring seal proposed in this utility model.

[0017] In the attached diagram: 1. Connecting plate, 2. Support plate, 3. Support assembly, 4. Uniform feed assembly, 5. Propulsion assembly, 6. Stud, 7. Moving plate, 8. Handle, 9. Vertical plate, 10. Slide rod, 11. Push plate, 12. Baffle, 13. Support spring, 14. Propulsion rod, 15. Connecting ring one, 16. Connecting ring two. Detailed Implementation

[0018] like Figure 1-4 As shown, an auxiliary tool for a PTFE-coated O-ring seal includes a connecting plate 1, a support plate 2, a support assembly 3, and a uniform feeding assembly 4. One end of the support plate 2 is movably connected to the end face of the connecting plate 1, and the support assemblies are arranged in a ring with uniform intervals around the central axis of the connecting plate 1. The support assembly 3 passes through the connecting plate 1 and is movably connected to the center of the connecting plate 1, and slides against the inner wall of the ring-shaped support plate 2. A pushing assembly 5 is movably connected to the upper wall of the support plate 2. The pushing assembly 5 slides along the axial direction of the connecting plate 1 via the uniform feeding assembly 4. The uniform feeding assembly 4 is slidably disposed within the connecting plate 1 and is in contact with the pushing assembly. One end of the support plate 2 is in contact with the other end of the support plate 2. The middle section of the support plate 2 is bent and the end of the support plate 2 away from the connecting plate 1 is perpendicular to the end face of the connecting plate 1. The sealing ring is put on the outer wall of the multiple support plates 2 and fits against one end of the push assembly 5. The support assembly 3 is adjusted to move towards one end of the connecting plate 1. The support assembly 3 slides in contact with the inclined inner wall of the support plate 2, so that the multiple support plates 2 are opened synchronously, so that the sealing ring is tightened and the diameter is expanded. The inner wall of the support plate 2 is put on the outer wall of the shaft end. The uniform feeding assembly 4 is pushed to move along the axial direction of the connecting plate 1. The multiple push assemblies 5 act on the end of the sealing ring to achieve uniform force on the movement of the sealing ring.

[0019] like Figure 3 and Figure 4 As shown, in order to achieve the synchronous opening of multiple support plates 2, the support assembly 3 includes a stud 6, a movable plate 7, and a handle 8. The stud 6 is threadedly connected to the center of the connecting plate 1, and one end of the stud 6 extends to the center of the ring-shaped support plates 2. The movable plate 7 is rotatably connected to the end face of the stud 6 and slides against the inner wall of the support plate 2. The handle 8 is fixedly connected to the end of the stud 6 away from the support plate 2. The corner of the movable plate 7 near the connecting plate 1 is chamfered. When pushing the sealing ring, lubricant is applied between the outer wall of the support plate 2 and the inner wall of the sealing ring. The handle 8 is rotated clockwise to move the stud 6 away from the support plate 2, and the movable plate 7 moves synchronously. The movable plate 7 contacts the inclined inner wall of the support plate 2 at its angle, thereby achieving the synchronous opening of multiple support plates 2.

[0020] like Figure 1 , Figure 3 and Figure 4As shown, in order to prevent the sealing ring from twisting during installation, the uniform feeding assembly 4 includes a push rod 14, a connecting ring 15, and a connecting ring 16. The push rod 14 slides through the outer circumference of the end face of the connecting plate 1. The push rods 14 are arranged in a ring with uniform intervals around the stud 6. The connecting ring 15 is fixedly connected to the end of the push rod 14 near the vertical plate 9. The connecting ring 16 is fixedly connected to the end of the push rod 14 near the connecting plate 1. After the sealing ring is opened, the connecting ring 16 is pushed, and the thrust is transmitted to the connecting ring 15 by the multiple push rods 14, so that the connecting ring 15 is evenly contacted by one end of the multiple push assemblies 5, and indirectly contacts the end face of the sealing ring, thereby improving the uniformity of the installation thrust.

[0021] To ensure that the end face of the sealing ring is subjected to synchronous and uniform force, and can automatically reset after being pushed, thus reducing interference between the uniform feeding assembly 4 and the outer walls of the multiple support plates 2, the pushing assembly 5 includes a vertical plate 9, a slide rod 10, and a push plate 11. The vertical plate 9 is fixedly connected to the bend in the outer wall of the support plate 2. The slide rod 10 passes through the vertical plate 9 and is slidably disposed within the vertical plate 9. The push plate 11 is fixedly connected to the end face of the slide rod 10 away from the connecting plate 1. A baffle 12 is fixedly connected to the end of the slide rod 10 away from the push plate 11. A support spring 13 is sleeved on the outer wall of the slide rod 10, and the support spring 13 is located on the vertical plate. Between the vertical plate 9 and the baffle 12, the push plate 11 is reset and adjusted. The connecting ring 15 is in direct contact with the push assembly 5 and pushes it to move along the length of the support plate 2 to realize the end of the sealing ring being pushed. In the initial state, the vertical plate 9 supports the slide rod 10. Under the support of the support spring 13, the baffle 12 approaches the connecting plate 1. When the connecting ring 15 contacts the baffle 12 and pushes it to move, the slide rod 10 supports the push plate 11 to push the sealing ring to move. When the sealing ring is separated from the support plate 2, the push plate 11 is automatically reset by the support spring 13.

[0022] In actual use, the operator installs the sealing ring on the installation tool. In the initial state, the push plate 11 is in contact with the upright plate 9, and the sealing ring is placed on the front end of multiple support plates 2, with the end face of the sealing ring in contact with the push plate 11.

[0023] Turn the handle 8 clockwise to move the stud 6 away from the support plate 2, and the moving plate 7 moves synchronously. The angle of the moving plate 7 contacts the inner wall of the inclined side of the support plate 2, so that multiple support plates 2 are opened synchronously. The inner walls of multiple support plates 2 are put into contact with the outer wall of the shaft end. After the sealing ring is opened, the connecting ring 2 16 is pushed. Multiple push rods 14 transmit the thrust to the connecting ring 15, so that the connecting ring 15 is evenly in contact with multiple baffles 12. The slide rod 10 supports the push plate 11 to push the sealing ring to move until it is separated from the support plate 2 and sleeved in the groove of the outer wall of the shaft end.

[0024] After the sealing ring separates from the support plate 2, under the elastic support of the support spring 13, the push plate 11 automatically resets and fits against the side wall of the upright plate 9. At the same time, the connecting ring 15 and the connecting ring 16 slide away from the side of the support plate 2, reducing the rotational interference to the outer walls of the multiple support plates 2.

[0025] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A PTFE-coated O-ring auxiliary tool, comprising a connecting plate (1), characterized in that: It also includes a support plate (2), a support component (3), and a uniform feeding component (4). One end of the support plate (2) is movably connected to the end face of the connecting plate (1) and is arranged in a ring with uniform intervals around the central axis of the connecting plate (1). The support component (3) passes through the connecting plate (1) and is movably connected to the center of the connecting plate (1), and slides against the inner wall of the ring-arranged support plate (2). The upper wall of the support plate (2) is movably connected to a propulsion component (5). The propulsion component (5) slides along the axial direction of the connecting plate (1) through the uniform feeding component (4). The uniform feeding component (4) is slidably disposed inside the connecting plate (1) and is in contact with one end of the propulsion component (5).

2. The PTFE-coated O-ring auxiliary tool according to claim 1, characterized in that: The middle section of the support plate (2) is bent, and the end of the support plate (2) away from the connecting plate (1) is perpendicular to the end face of the connecting plate (1).

3. The PTFE-coated O-ring auxiliary tool according to claim 2, characterized in that: The support assembly (3) includes a stud (6), a movable plate (7), and a handle (8). The stud (6) is threaded to the center of the connecting plate (1). One end of the stud (6) extends to the center of the ring-shaped support plate (2). The movable plate (7) is rotatably connected to the end face of the stud (6) and slides against the inner wall of the support plate (2). The handle (8) is fixedly connected to the end of the stud (6) away from the support plate (2). The corner of the movable plate (7) near the connecting plate (1) is chamfered.

4. The PTFE-coated O-ring auxiliary tool according to claim 3, characterized in that: The propulsion assembly (5) includes a vertical plate (9), a sliding rod (10) and a push plate (11). The vertical plate (9) is fixedly connected to the bend of the outer wall of the support plate (2). The sliding rod (10) passes through the vertical plate (9) and is slidably disposed inside the vertical plate (9). The push plate (11) is fixedly connected to the end face of the sliding rod (10) away from the connecting plate (1).

5. The PTFE-coated O-ring auxiliary tool according to claim 4, characterized in that: A baffle (12) is fixedly connected to one end of the slide rod (10) away from the push plate (11). A support spring (13) is sleeved on the outer wall of the slide rod (10). The support spring (13) is located between the upright plate (9) and the baffle (12) and is used for the reset adjustment of the push plate (11).

6. The PTFE-coated O-ring auxiliary tool according to claim 5, characterized in that: The uniform feeding assembly (4) includes a push rod (14), a first connecting ring (15) and a second connecting ring (16). The push rod (14) slides through the outer circumference of the end face of the connecting plate (1). The push rods (14) are arranged in a ring with uniform intervals around the stud (6). The first connecting ring (15) is fixedly connected to the end of the push rod (14) near the vertical plate (9). The second connecting ring (16) is fixedly connected to the end of the push rod (14) near the connecting plate (1).

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