Bushing for connecting plastic pipe and pipe hot melting socket
By designing thin-walled tubular bushings made of stainless steel, the diameter reduction problem at the connections of thin-walled plastic pipes is solved, and high-throughput and stable connection effects are achieved to ensure the normal operation of the pipeline system.
Patent Information
- Application Number
- CN202422455960.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-10
AI Technical Summary
In the connection of thin-walled and thick-sized plastic pipes, problems such as shrinking diameters and separation at the connections are prone to occur, which affects the normal use of the pipeline.
The thin-walled tubular bushing is made of stainless steel, designed to be integrated with the plug and flare mouth. The inner diameter of the flare mouth is slightly smaller than the outer diameter of the pipe, and the protruding clamping point is fixed to the inner wall of the pipe to ensure the connection strength and sealing, and avoid the shrinkage caused by the accumulation of welded interference fluid.
Effectively prevent the pipe hot melt socket shrinkage, ensure high-throughput operation, improve connection stability and sealing effect, and ensure long-term smoothness and stability of the pipeline system.
Smart Images
Figure CN223257805U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hot-melt sockets, and in particular relates to a bushing for connecting plastic pipes with pipes through hot-melt sockets. Background Art
[0002] With technological advancements, the research, development, production, and application of plastic composite pipes are gaining increasing attention and becoming a key area of development for plastic piping. Hot-melt socket-and-spigot connection technology is widely used in plastic piping systems. Its core principle is to heat the plastic pipe, causing it to fuse together in a molten state, achieving a tight connection. However, improper operation of the socket-and-spigot connection for thin-walled and thick pipes can lead to problems such as shrinkage and separation of the connecting layers, thus affecting the normal operation of the pipe. Summary of the Invention
[0003] The purpose of the utility model is to solve the above problems and provide a bushing for connecting plastic pipes with pipes by hot-melt socket connection.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a bushing for hot-melt socket connection of plastic pipes and pipes, comprising a thin-walled tubular bushing body for installation between a first pipe and a second pipe connected by plugging and having open ends, one end of the first pipe being plugged into the circumferential inner side of one end of the second pipe, the bushing body comprising a plug-in portion for plugging into the first pipe, located on the circumferential inner side of one end of the inner side of the second pipe and having an equal diameter structure, one end of the bushing body having a bell-mouth portion which abuts against the outer side of the end face of the first pipe and has a variable diameter structure, the diameter of the bell-mouth portion close to one end of the plug-in portion gradually increases to the other end, the outer side of one end of the plug-in portion close to the bell-mouth portion is provided with at least one protrusion clamping point which protrudes outward and abuts against the inner wall of the first pipe, the outer side of the bell-mouth portion exceeds the outer side of the protrusion clamping point and the outer diameter of the bell-mouth portion is not greater than the outer diameter of the first pipe. The bushing body can control the hot-melt socket reduction of the pipe while ensuring large flux. By optimizing the bushing structure and material, the connection strength and stability are improved, and the sealing effect is optimized to ensure the normal operation of the pipeline system and ensure water flow capacity.
[0005] In the aforementioned socket-and-spigot hot-melt connection bushing, the spigot portion and flared portion are integrally formed and made of stainless steel. This material prevents accumulation of excess fluid during the hot-melt socket-and-spigot connection, which can lead to pipe diameter reduction, reduced water flow capacity, and even pipe blockage.
[0006] In the above-mentioned bushing for connecting plastic pipes and pipes by hot-melt socket connection, the wall thickness of the bushing body is 0.15-0.25 mm, and the protrusion height of the protrusion clamping point is 0.4-0.6 mm.
[0007] In the above-mentioned sleeve for connecting plastic pipes and pipes by hot-melt socket connection, the plug-in portion and the bell-mouth portion are coaxially arranged and the wall thickness of the plug-in portion is the same as that of the bell-mouth portion.
[0008] In the aforementioned sleeve for hot-melt socket-spigot connection of plastic pipes, there is only one protruding engagement point, which is formed by the inner side of the splice portion being deformed outward by external pressure. Before hot-melt socket-spigot connection, the protruding engagement point secures the sleeve body to the first pipe. During the socket-spigot connection process, the sleeve body fills the slight gap between the pipes, forming a more reliable seal.
[0009] In the aforementioned socket-and-spigot bushing for connecting plastic pipes to pipes, the inner diameter of the bell-mouth portion is 1.5-2.5 mm smaller than the outer diameter of the first pipe. The inner diameter of the bell-mouth portion is slightly larger than the inner diameter of the first pipe but smaller than the outer diameter of the first pipe, thereby enhancing the strength and stability of the connection.
[0010] In the above-mentioned sleeve for hot-melt socket connection of plastic pipes and pipes, the length of the splice portion is equal to the length of the first pipe inserted into the inner side of the second pipe, thereby ensuring the firmness, sealing and overall performance of the connection.
[0011] In the above-mentioned sleeve for hot-melt socket connection between plastic pipes and pipes, the outer circumferential side of the end surface of the plug-in portion away from the bell mouth portion has an arc-shaped chamfered portion for installing the plug-in portion into the first pipe.
[0012] In the aforementioned sleeve for hot-melt socket-and-spigot connection of a plastic pipe to another pipe, at least one rib is provided on the outer side of the end of the inserting portion remote from the bell-mouth portion. The rib is arranged axially along the length of the inserting portion. The rib prevents the sleeve body from rotating circumferentially when installed in the first pipe, which could affect subsequent processing.
[0013] In the above-mentioned sleeve for hot-melt socket connection between plastic pipes and pipes, the height of the rib is lower than the height of the protruding clamping point, and circumferential limiting steps are respectively provided on both sides of the rib.
[0014] Compared with the existing technology, the advantages of this utility model are:
[0015] The device effectively prevents the hot-melt socket-and-spigot connection of the pipeline system from shrinking while ensuring high-throughput operation, thereby ensuring the smoothness and efficiency of the pipeline system, and also effectively improves the stability of the connection, providing a strong guarantee for the long-term stable operation of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of embodiment 1 of the present utility model.
[0017] Figure 2 It is a structural sectional view of embodiment 1 of the present utility model.
[0018] Figure 3 It is a structural diagram of the first embodiment of the present utility model when in use.
[0019] Figure 4 It is a structural diagram of the second embodiment of the present utility model.
[0020] In the figure: bushing body 1, plug-in portion 2, arc chamfered portion 21, convex rib 22, circumferential limit step 23, bell mouth portion 3, protruding locking point 4, first pipe 5, second pipe 6. DETAILED DESCRIPTION
[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0022] Example 1
[0023] like Figure 1-3 As shown, a bushing for hot-melt socket connection between plastic pipes and pipes includes a thin-walled tubular bushing body 1 for installation between a first pipe 5 and a second pipe 6 that are connected in a plug-in manner and is open at both ends. One end of the first pipe 5 is plugged into the circumferential inner side of one end of the second pipe 6. The bushing body 1 includes a plug-in portion 2 for plugging into the first pipe 5 and located on the circumferential inner side of one end of the inner side of the second pipe 6 and having an equal diameter structure. One end of the bushing body 1 has a bell-mouth portion 3 that abuts against the outside of the end face of the first pipe 5 and has a variable diameter structure. The diameter of the bell-mouth portion 3 gradually increases from one end close to the plug-in portion 2 to the other end. At least one protrusion clamping point 4 that protrudes outward and abuts against the inner wall of the first pipe 5 is provided on the outside of one end of the plug-in portion 2 close to the bell-mouth portion 3. The outer side of the bell-mouth portion 3 exceeds the outer side of the protrusion clamping point 4 and the outer diameter of the bell-mouth portion 3 is not greater than the outer diameter of the first pipe 5. The bushing body 1 can control the hot-melt socket reduction of the pipe, while ensuring large flux. It also improves the connection strength and stability by optimizing the bushing structure, material, etc., and optimizes the sealing effect, ensuring the normal operation of the pipeline system and ensuring water flow capacity.
[0024] like Figure 1 As shown, the spigot 2 and the bell mouth 3 are integrated into a single piece and are both made of stainless steel. Stainless steel can prevent the accumulation of excess fluid during hot-melt socket connection, which can lead to pipe diameter reduction, reduced water flow capacity, and even pipe blockage.
[0025] like Figure 2 As shown, the wall thickness of the bushing body 1 is 0.15-0.25 mm, and the protrusion height of the protrusion locking point 4 is 0.4-0.6 mm.
[0026] The plug-in portion 2 and the bell-mouth portion 3 are coaxially arranged, and the wall thickness of the plug-in portion 2 is the same as that of the bell-mouth portion 3 .
[0027] Specifically, there is only one protruding engagement point 4, which is formed when the inner side of the plug portion 2 is deformed outward by external pressure. Before hot-melt socket connection, the protruding engagement point 5 secures the bushing body 1 to the first pipe 5. During the socket connection process, the bushing body 1 can fill the tiny gap between the pipes, forming a more reliable seal.
[0028] like Figure 3 As shown, the inner diameter of the bell mouth 3 is 1.5-2.5 mm smaller than the outer diameter of the first pipe 5. The inner diameter of the bell mouth 3 is slightly larger than the inner diameter of the first pipe 5 but smaller than the outer diameter of the first pipe 5, which enhances the strength and stability of the connection.
[0029] The length of the plug-in portion 2 is equal to the length of the first pipe 5 plugged into the inner side of the second pipe 6. This ensures the firmness, sealing and overall performance of the connection.
[0030] like Figure 1 As shown, the outer circumferential side of one end surface of the plug-in portion 2 away from the bell-mouth portion 3 has an arc-shaped chamfered portion 21. The arc-shaped chamfered portion 21 is used for installing the plug-in portion 2 into the first pipe 5.
[0031] The principle of this embodiment is:
[0032] The bushing body 1 is provided with customized specifications by the factory. Before the pipe is hot-melt-socketed, the bushing body 1 is inserted into the first pipe 5 so that the protruding clamping point 4 fits tightly with the inner wall of the first pipe 5. Then the ends of the first pipe 5 and the second pipe 6 are heated. After the heating time is reached, they are quickly removed and the first pipe 5 is quickly and accurately inserted into the second pipe 6. During the insertion process, avoid rotating the pipe to ensure the uniformity of the weld surface. The bushing body 1 effectively avoids diameter reduction in the first pipe 5, ensures the accuracy and sealing effect of the connection, reduces the possibility of leakage, and ensures the normal operation of the pipeline system.
[0033] Example 2
[0034] Combine Figure 4As shown, the principles and steps of this embodiment are similar to those of the first embodiment, with the difference being that, in the first embodiment, the end surface of the plug-in portion 2, which is remote from the bell-mouth portion 3, has an arcuate chamfer 21 on the circumferential outer side. In this embodiment, at least one rib 22 is provided on the outer side of the end of the plug-in portion 2, which is remote from the bell-mouth portion 3. The rib 22 is axially arranged along the length of the plug-in portion 2, and the height of the rib 22 is lower than the height of the protruding engagement point 4. Circumferential limiting steps 23 are provided on either side of the rib 22. The rib 22 serves as a guide for insertion and also prevents the bushing body 1 from circumferentially rotating when installed in the first pipe 5, which could affect subsequent processing.
[0035] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.
[0036] Although this document frequently uses terms such as bushing body 1, inserting portion 2, arc-shaped chamfered portion 21, rib 22, circumferential limiting step 23, bell mouth portion 3, protruding locking point 4, first pipe 5, and second pipe 6, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.
Claims
1. A bushing for connecting plastic pipes with pipes by hot-melt socket connection, comprising a thin-walled tubular bushing body (1) for installation between a first pipe (5) and a second pipe (6) connected by plugging and having open ends, wherein one end of the first pipe (5) is plugged into the circumferential inner side of one end of the second pipe (6), and is characterized in that: The bushing body (1) includes a plug-in portion (2) for plugging into the first pipe (5) and located on the inner side of one end of the inner side of the second pipe (6) and having an equal diameter structure. One end of the bushing body (1) has a bell-mouth portion (3) that abuts against the outer side of the end face of the first pipe (5) and has a variable diameter structure. The diameter of the bell-mouth portion (3) gradually increases from one end close to the plug-in portion (2) to the other end. The outer side of one end of the plug-in portion (2) close to the bell-mouth portion (3) is provided with at least one protrusion clamping point (4) that protrudes outward and abuts against the inner wall of the first pipe (5). The outer side of the bell-mouth portion (3) exceeds the outer side of the protrusion clamping point (4) and the outer diameter of the bell-mouth portion (3) is not greater than the outer diameter of the first pipe (5).
2. A bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 1, characterized in that: The plug-in portion (2) and the bell-mouth portion (3) are connected into an integrated structure and are both made of stainless steel.
3. A bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 1, characterized in that: The wall thickness of the bushing body (1) is 0.15-0.25 mm, and the protrusion height of the protrusion locking point (4) is 0.4-0.6 mm.
4. A bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 1, characterized in that: The plug-in portion (2) and the bell-mouth portion (3) are coaxially arranged, and the wall thickness of the plug-in portion (2) is the same as the wall thickness of the bell-mouth portion (3).
5. The bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 1, characterized in that: The number of the protruding locking point (4) is one, and the protruding locking point (4) is formed by the inner side of the plug-in portion (2) being pressed outward by an external force and deformed.
6. A bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 1, characterized in that: The inner diameter of the bell mouth portion (3) is 1.5-2.5 mm smaller than the outer diameter of the first pipe (5).
7. The bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 1, characterized in that: The length of the plug-in portion (2) is equal to the length of the first pipe (5) plugged into the inner side of the second pipe (6).
8. The bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 1, characterized in that: The plug-in portion (2) has an arc-shaped chamfered portion (21) on the circumferential outer side of an end surface of one end away from the bell-mouth portion (3).
9. The bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 1, characterized in that: At least one convex rib (22) is provided on the outer side of one end of the plug-in portion (2) away from the bell-mouth portion (3), and the convex rib (22) is axially arranged along the length direction of the plug-in portion (2).
10. A bushing for connecting plastic pipes and pipes with hot-melt sockets according to claim 9, characterized in that: The height of the convex rib (22) is lower than the height of the protruding locking point (4), and circumferential limiting steps (23) are respectively provided on both sides of the convex rib (22).