Pipe joint sealing structure and mounting method thereof
By designing the combination of thread A, locking nut, support washer and sealing ring on the pipe joint, the problem of uneven force of the sealing parts during the assembly process of the planar sealing pipe joint is solved, and a better sealing effect is achieved.
Patent Information
- Application Number
- CN202411909870.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-21
AI Technical Summary
When assembling the plane sealing pipe joint, the seal is prone to relative rotation and is affected by friction. The seal is unevenly subjected to damage and is easily damaged, which affects the sealing effect.
A pipe joint sealing structure is designed, including thread A, locking nut, pipe joint retracting groove, support gasket and sealing ring. By rotating the lock nut, the support washer and sealing ring are pushed to the direction of thread B until the sealing ring deforms, and sealing is achieved.
It avoids relative rotation of the seal during assembly, protects the seal ring from damage, ensures that the seal is subjected to uniform force, and improves the sealing effect.
Smart Images
Figure CN119665049A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a pipe joint sealing structure and an installation method thereof, belonging to the technical field of fasteners. Background Art
[0002] At present, the common sealing forms of hydraulic system pipe joints are mainly flat seals and conical seals. Flat seals are formed by the mutual extrusion between sealing parts, such as O-rings, sealing rings, etc., and the sealed parts to prevent the leakage of liquid.
[0003] When assembling a traditional flat sealing pipe joint, the assembly part and the seal are prone to relative rotation during the process of screwing in. Under the relative rotation and extrusion, the seal is affected by friction, the force is uneven, and the seal is easily damaged, thus affecting the sealing effect. Summary of the invention
[0004] The present invention aims to solve the technical problem that when assembling a flat sealing pipe joint, the assembly part and the seal are prone to relative rotation during the process of screwing in, and the seal is affected by friction under relative rotation and extrusion, the seal is unevenly stressed, and the seal is easily damaged, thus affecting the sealing effect.
[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A pipe joint sealing structure, the pipe joint is provided with a thread A, and a locking nut is assembled on the thread A; A pipe joint retreat groove is provided below the thread A on the pipe joint, and a support washer and a sealing ring are installed in the pipe joint retreat groove; The inner diameter of the support washer and sealing ring and the diameter of the undercut groove of the pipe joint are interference fit; A thread B is arranged below the pipe joint retreat groove on the pipe joint.
[0006] A method for installing a pipe joint sealing structure comprises the following steps: Step 1: Screw the lock nut into thread A on the pipe joint; Step 2: Put the support washer and the sealing ring into the recess of the pipe joint; Step 3: Tighten the assembly onto thread B; Step 4: Tighten the locking nut to push the support washer toward thread B until the sealing ring is deformed.
[0007] The beneficial effects of adopting the above technical solution are: In the present invention, during the rotation of the locking nut, the support washer and the sealing ring are closely fitted and move toward the assembly part on the thread B. The support washer and the sealing ring will not rotate relative to each other, thus preventing the relative rotation from squeezing and deforming the sealing ring, thereby protecting the sealing ring. Secondly, the support washer pushes the sealing ring to move evenly toward the assembly part on the thread B until the sealing ring is evenly stressed and deformed in the circumferential direction, thereby achieving a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a schematic diagram of the sealing structure of the pipe joint of the present invention.
[0009] In the figure: 1-pipe joint, 2-locking nut, 3-support washer, 4-sealing ring, 7-thread B.
[0010] Figure 2 for Figure 1 Schematic diagram of the center pipe joint structure.
[0011] In the figure: 5-thread A, 6-pipe joint undercut groove, 7-thread B. DETAILED DESCRIPTION
[0012] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0013] A pipe joint sealing structure, a pipe joint 1 is provided with a thread A5, and a locking nut 2 is assembled on the thread A5; A pipe joint undercut groove 6 is provided below the thread A5 on the pipe joint 1, and a support washer 3 and a sealing ring 4 are installed in the pipe joint undercut groove 6; The inner diameters of the support washer 3 and the sealing ring 4 and the diameter of the undercut groove 6 of the pipe joint are interference fit; A thread B7 is provided below the pipe joint undercut groove 6 on the pipe joint 1 .
[0014] A method for installing a pipe joint sealing structure comprises the following steps: Step 1: Screw the lock nut 2 into the thread A5 on the pipe joint 1; Step 2: Insert the support washer 3 and the sealing ring 4 into the undercut groove 6 of the pipe joint; Step 3: Tighten the assembly onto thread B7; Step 4: Tighten the locking nut 2 to push the supporting washer 3 toward the direction of the thread B7 until the sealing ring 4 is deformed to produce a sealing effect.
[0015] In the present invention, during the rotation of the locking nut 2, the support washer 3 and the sealing ring 4 are closely fitted and move toward the assembly part on the thread B7, and the support washer 3 and the sealing ring 4 do not rotate relative to each other, thereby preventing the relative rotation from squeezing and deforming the sealing ring 4, thereby protecting the sealing ring 4. Secondly, the support washer 3 pushes the sealing ring 4 to move evenly toward the assembly part on the thread B7 until the sealing ring 4 is evenly stressed and deformed along the circumferential direction, thereby achieving a better sealing effect.
Claims
1. A pipe joint sealing structure, characterized in that: The pipe joint (1) is provided with a thread A (5), and a locking nut (2) is mounted on the thread A (5); A pipe joint undercut groove (6) is provided below the thread A (5) on the pipe joint (1), and a support washer (3) and a sealing ring (4) are installed in the pipe joint undercut groove (6); The inner diameters of the support washer (3) and the sealing ring (4) and the diameter of the undercut groove (6) of the pipe joint are interference fit; A thread B (7) is provided below the pipe joint cut-back groove (6) on the pipe joint (1).
2. A method for installing the pipe joint sealing structure according to claim 1, comprising the following steps: Step 1: Screw the lock nut (2) into thread A (5) on the pipe connector (1); Step 2: Insert the support washer (3) and the sealing ring (4) onto the undercut groove (6) of the pipe joint; Step 3: Tighten the assembly onto thread B (7); Step 4: Tighten the lock nut (2) and push the support washer (3) toward the direction of thread B (7) until the sealing ring (4) is deformed.