A pipe coupling
By designing a combination structure of a second external pressure component and a first external pressure component on the pipe joint, and utilizing the combination of an adjusting screw and a fastening nut, the problem of inconvenient installation requiring external tools in the existing technology is solved, achieving a fast and secure pipe connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MAIDAO FLUID EQUIP CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-06-26
AI Technical Summary
In existing technologies, the connection between pipe joints and pipe bodies requires the use of external tools for compression and fixation, which makes installation and connection inconvenient and inefficient.
A pipe connection joint was designed. By welding a second external pressure component and a first external pressure component to the outer pipe surface on the left and right sides of the pipe joint, and using a combination structure of adjusting screw, limiting stud and fastening nut, a fixed connection without external tools can be achieved. The magnetic attraction of the arc-shaped magnetic strip and collar can be used for quick installation.
It enables quick tightening of pipe joints without the need for external tools, improving installation efficiency, preventing loose connections, and ensuring the stability of the installation.
Smart Images

Figure CN224414573U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe joint technology, and specifically to a pipe connection joint. Background Technology
[0002] Pipelines are a crucial part of urban infrastructure construction, serving as a transmission medium. Due to limitations in pipeline production, transportation, and installation, pipelines often need to be cut into multiple segments for ease of transport. Upon arrival at their destination, these segments need to be connected to form a pipe network, requiring pipe connectors. A search revealed existing technology (publication number: CN202322625428.2) for pipe connectors, which describes a process where "the transport pipe is inserted into the connecting pipe and tightly connected via a sealing ring. Then, a pressing tool is used to squeeze the portion of the connecting pipe opposite the transport pipe, creating a clamping part protruding towards the axis of the connecting pipe. This clamping part presses against the outer circumference of the transport pipe, achieving a second, secure connection between the connecting and transport pipes. This design, using two methods to fix the connecting and transport pipes, improves the connection strength." However, the existing technology requires external tools for clamping and fixing the pipe connector to the pipe body, leading to inconvenient installation and low efficiency. Utility Model Content
[0003] To overcome the shortcomings of existing technologies, a pipe connection joint is provided to solve the problem that the connection between the pipe joint and the pipe body in the existing technology requires external tools for compression and fixation, resulting in inconvenient installation and low efficiency.
[0004] To achieve the above objectives, a pipe connection joint is provided, comprising: a pipe joint, wherein a second external pressure member is welded to both the left and right outer pipe surfaces of the pipe joint.
[0005] The upper end of the second external pressure component is engaged with the first external pressure component. The lower surface of the second external pressure component is connected to an adjusting screw via a bearing. The surface of the adjusting screw is connected to a limiting base plate via a driving block. A limiting stud is welded to the upper surface of the limiting base plate. The side end of the first external pressure component is welded to the limiting stud via a connecting block. The side end of the second external pressure component is connected to the limiting stud via a fixing block. A fastening nut is screwed onto the cylindrical surface of the limiting stud.
[0006] Furthermore, the first and second external pressure components are symmetrically arranged around the left and right pipe ends of the pipe joint, and sealing gaskets are adhered to the outer surfaces of the left and right pipe ends of the pipe joint.
[0007] Furthermore, the pipe joint has a collar fitted onto its surface, and the collar is fitted onto the outer surface of one end of the first external pressure member and the second external pressure member.
[0008] Furthermore, both the inner arc surfaces of the first and second external pressure components are bonded with sealing rubber gaskets; and the first and second external pressure components are in the shape of semi-annular blocks.
[0009] Furthermore, the first external pressure member and the second external pressure member are respectively welded to the front and rear ends with connecting blocks and fixing blocks, and two sets of limiting studs are symmetrically welded to the lower surface of the connecting blocks.
[0010] Furthermore, the fastening nut is located between the fixing block and the limiting base plate.
[0011] Furthermore, the outer arc surfaces of the first and second external pressure components are bonded with arc-shaped magnetic strips, and the arc surfaces of the arc-shaped magnetic strips are adsorbed with collars.
[0012] The beneficial effects of this utility model are as follows: the pipe connection joint of this utility model utilizes a second external pressure member welded to the side end of the pipe joint to receive and adhere to the lower pipe surface of the external pipe. By rotating the adjusting screw, the limiting base plate is moved downward, causing the limiting stud to pull the first external pressure member down and engage with the second external pressure member. The fastening nut is then tightened to form a wrap-around fixing structure for the external pipe. This eliminates the need for external tools to connect and install the pipe, facilitating quick and easy tightening and installation of the pipe joint. It also prevents the pipe connection joint from moving or detaching during the fixing process, ensuring the installation firmness of the pipe connection joint and improving the installation efficiency of the pipe connection joint. Attached Figure Description
[0013] Figure 1 This is a front view structural diagram of the pipe connection joint according to an embodiment of the present utility model.
[0014] Figure 2 This is a partial cross-sectional view of the pipe connection joint according to an embodiment of the present utility model.
[0015] Figure 3 This is a side view cross-sectional diagram of the connection structure of the external pressure component according to an embodiment of the present invention.
[0016] Figure 4 This is a side view of the connection structure of the external pressure component in an embodiment of the present invention.
[0017] In the diagram: 1. Pipe joint; 11. Sealing gasket; 2. First external pressure component; 21. Connecting block; 22. Arc-shaped magnetic strip; 3. Second external pressure component; 31. Adjusting screw; 32. Sealing rubber gasket; 33. Drive block; 34. Fixing block; 4. Limiting stud; 41. Limiting base plate; 42. Fastening nut; 5. Collar. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Reference Figures 1 to 4 As shown, this utility model provides a pipe connection joint, including: a pipe joint 1, with second external pressure members 3 welded to the outer pipe surfaces on both the left and right sides of the pipe joint 1.
[0020] The upper end of the second external pressure component 3 is engaged with the first external pressure component 2. The lower surface of the second external pressure component 3 is connected to an adjusting screw 31 via a bearing. The surface of the adjusting screw 31 is connected to a limiting base plate 41 via a driving block 33. A limiting stud 4 is welded to the upper surface of the limiting base plate 41. The side end of the first external pressure component 2 is welded to the limiting stud 4 via a connecting block 21. The side end of the second external pressure component 3 is connected to the limiting stud 4 via a fixing block 34. A fastening nut 42 is screwed onto the cylindrical surface of the limiting stud 4.
[0021] In use, first insert one end of the pipe connector 1 into the pipe wall of a set of external pipes. At this time, the second external pressure component 3 is close to the pipe surface on one side of the external pipe. Then, select the yellow drill adjusting screw 31 to make the limiting stud 4 pull the first external pressure component down and engage with the second external pressure component. This will drive the limiting base plate 41 to move down, so that the limiting stud 4 pulls the first external pressure component 2 down and engages with the upper surface of the second external pressure component 3. Tighten the fastening nut 42 to form a wrap-around fixation of the external pipe. Then, magnetically attach the collar 5 to the side of the first external pressure component 2 and the second external pressure component 3 to complete the connection of one end of the pipe.
[0022] In this embodiment, the first external pressure member 2 and the second external pressure member 3 are symmetrically arranged around the outer sides of the left and right pipe ends of the pipe joint 1, and sealing gaskets 11 are adhered to the outer surfaces of the left and right pipe ends of the pipe joint 1. A collar 5 is fitted onto the pipe surface of the pipe joint 1, and the collar 5 is fitted onto the outer surface of one end of the first external pressure member 2 and the second external pressure member 3.
[0023] In a preferred embodiment, the first external pressure member 2 and the second external pressure member 3 are externally pressed and fixed to securely fix the pipe joint 1 to the connection end of the external pipe, preventing the connection between the pipe joint 1 and the external pipe from loosening or shifting. The collar 5 engages with the first external pressure member 2 and the second external pressure member 3, restricting any loosening of the first external pressure member 2 and the second external pressure member 3.
[0024] In this embodiment, sealing rubber gaskets 32 are bonded to the inner arc surfaces of both the first external pressure member 2 and the second external pressure member 3; and the first external pressure member 2 and the second external pressure member 3 are semi-annular blocks. Connecting blocks 21 and fixing blocks 34 are welded to the front and rear ends of the first external pressure member 2 and the second external pressure member 3, respectively. Two sets of limiting studs 4 are symmetrically welded to the lower surface of the connecting block 21. The fastening nut 42 is located between the fixing block 34 and the limiting base plate 41. Arc-shaped magnetic strips 22 are bonded to the outer arc surfaces of the first external pressure member 2 and the second external pressure member 3, and collars 5 are adsorbed onto the arc surfaces of the arc-shaped magnetic strips 22.
[0025] In a preferred embodiment, the first external pressure member 2 and the second external pressure member 3 are tightly pressed against the outer pipe surface of the external pipe by the sealing rubber gasket 32 on the inner side wall, preventing leakage of liquid inside the pipe. The limiting stud 4, the limiting base plate 41, and the fastening nut 42 constitute the limiting and fixing structure of the first external pressure member 2 and the second external pressure member 3, which facilitates the separation or locking of the first external pressure member 2 and the second external pressure member 3, and facilitates the convenient installation and disassembly of the pipe joint 1.
[0026] This utility model of pipe connection joint effectively solves the problem that the connection between pipe joints and pipe bodies in the prior art requires external tools for compression and fixation, resulting in inconvenient installation and low efficiency. It eliminates the need for external tools to connect and install pipes, facilitates quick and easy compression and installation of pipe joints, prevents pipe joints from moving or detaching during the fixing process, ensures the firmness of pipe joint installation, and improves the installation efficiency of pipe joints. It is applicable to pipe connection joints.
[0027] 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.
Claims
1. A pipe connection fitting, comprising: Pipe joint (1), wherein a second external pressure component (3) is welded to both the left and right outer pipe surfaces, characterized in that: The upper end of the second external pressure member (3) is engaged with the first external pressure member (2). The lower surface of the second external pressure member (3) is connected to an adjusting screw (31) via a bearing. The surface of the adjusting screw (31) is connected to a limiting base plate (41) via a driving block (33). A limiting stud (4) is welded to the upper surface of the limiting base plate (41). The side end of the first external pressure member (2) is welded to the limiting stud (4) via a connecting block (21). The side end of the second external pressure member (3) is connected to the limiting stud (4) via a fixing block (34). A fastening nut (42) is screwed onto the cylindrical surface of the limiting stud (4).
2. A pipe connection joint according to claim 1, characterized in that, The first external pressure component (2) and the second external pressure component (3) are symmetrically arranged around the left and right pipe ends of the pipe joint (1), and the outer surfaces of the left and right pipe ends of the pipe joint (1) are bonded with sealing gaskets (11).
3. A pipe connection joint according to claim 1, characterized in that, The pipe joint (1) has a collar (5) fitted on its pipe surface. The collar (5) is fitted on the outer surface of one end of the first external pressure member (2) and the second external pressure member (3).
4. A pipe connection joint according to claim 1, characterized in that, The inner arc surfaces of the first external pressure member (2) and the second external pressure member (3) are both bonded with sealing rubber gaskets (32); and the first external pressure member (2) and the second external pressure member (3) are in the shape of a semi-ring block.
5. A pipe connection joint according to claim 1, characterized in that, The first external pressure component (2) and the second external pressure component (3) are respectively welded with connecting blocks (21) and fixing blocks (34) on their front and rear ends. Two sets of limiting studs (4) are symmetrically welded on the lower surface of the connecting block (21).
6. A pipe connection joint according to claim 1, characterized in that, The fastening nut (42) is located between the fixed block (34) and the limiting base plate (41).
7. A pipe connection joint according to claim 1, characterized in that, The first external pressure member (2) and the second external pressure member (3) have an arc-shaped magnetic strip (22) glued to their outer arc surfaces, and the arc surface of the arc-shaped magnetic strip (22) is adsorbed with a collar (5).