Connecting structure of steel pipe and plastic pipe
By adopting a combined structure such as thickened connecting pipe, internal thread, external thread, sealing ring, etc. at the connection between steel pipe and plastic pipe, the problem of loose connection and poor sealing effect of steel pipe and plastic pipe is solved, and a stable connection and sealing are achieved, enhancing the overall effect of the connection.
Patent Information
- Application Number
- CN202422502979.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-10-16
AI Technical Summary
The connecting structures between existing steel pipes and plastic pipes have problems such as poor sealing effect and easy loosening.
A combined structure of thickened connecting pipe, internal thread, external thread, steel pipe sealing ring, inner limit ring, buffer inclined surface, plastic pipe connector, drain inclined surface, end groove, annular groove, annular projection and fastening steel wire is adopted. The firm connection between the steel pipe and the plastic pipe is achieved through threaded connection and clamping tightening, and a sealing ring is set at the connection to enhance the sealing effect.
It improves the stability and sealing of the connection, reduces the impact of the water flow on the connection position, avoids loosening of the connection, and enhances the overall effect of the connection.
Smart Images
Figure CN223063376U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline connection, in particular to a connection structure between a steel pipe and a plastic pipe. Background Technique
[0002] A steel pipe has a hollow cross-section, and its length is much greater than the diameter or circumference of the steel. A plastic pipe is generally made of synthetic resin, that is, polyester, as the raw material, and stabilizers, lubricants, plasticizers, etc. are added, and it is processed by extrusion in a pipe-making machine by the method of "plastic molding". The plastic pipe has a certain plasticity relative to pipes of other materials. The steel pipe and the plastic pipe belong to two different types of pipes and cannot be directly connected. During the installation process, when connection is required, a connector is usually used for connection, and the two pipes can be connected together through the connection of the connector;
[0003] However, the current connection structure between the steel pipe and the plastic pipe has a poor sealing effect at the connection, is easy to loosen, and the connection is not firm enough, which brings trouble to subsequent use. Content of the Utility Model
[0004] The utility model provides a connection structure between a steel pipe and a plastic pipe, which can effectively solve the problems in the above background technique that the current connection structure between the steel pipe and the plastic pipe has a poor sealing effect at the connection, is easy to loosen, and the connection is not firm enough, bringing trouble to subsequent use.
[0005] To achieve the above object, the utility model provides the following technical solution: A connection structure between a steel pipe and a plastic pipe, including a thickened connection pipe, one end of the thickened connection pipe is fixedly connected with a steel pipe connector, an internal thread is provided inside the steel pipe connector, a connection steel pipe is threadedly connected inside the steel pipe connector, an external thread is provided at one end of the connection steel pipe, a steel pipe sealing ring is bonded to the end of the steel pipe connector, an internal limiting ring is installed inside the steel pipe connector, and a buffer inclined surface is provided inside the internal limiting ring;
[0006] The other end of the thickened connection pipe is fixedly connected with a plastic pipe connector, a connection plastic pipe is clamped outside the plastic pipe connector, a drainage inclined surface is provided inside one end of the plastic pipe connector, an end groove is provided outside one end of the plastic pipe connector, an annular groove is provided outside the plastic pipe connector, an annular protrusion is installed outside the plastic pipe connector, a plastic pipe sealing ring is bonded to one side of the thickened connection pipe, and a fastening wire is screwed tightly outside the connection plastic pipe.
[0007] Preferably, one end of the connection steel pipe is screwed into the inside of the steel pipe connector through a thread, and one end of the connection steel pipe contacts the internal limiting ring.
[0008] Preferably, the inner diameter of the steel pipe sealing ring is equal to the outer diameter of the connecting steel pipe, and the inner side of the steel pipe sealing ring is adhesively connected to the outer side of the connecting steel pipe.
[0009] Preferably, one end of the connecting plastic pipe contacts the thickened connecting pipe, and the inner side of the plastic pipe sealing ring is adhesively connected to the outer side of the connecting plastic pipe.
[0010] Preferably, the connecting plastic pipe is clamped outside the annular protrusion, and a structure protruding outward is formed by extrusion at a position corresponding to the annular protrusion at one end of the connecting plastic pipe.
[0011] Preferably, the fastening steel wire is screwed at a position corresponding to the annular groove on the outer side of the connecting plastic pipe, and one end of the connecting plastic pipe is attached to the position of the annular groove by the extrusion of the fastening steel wire.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The structure of the present utility model is scientific and reasonable, and it is safe and convenient to use:
[0013] 1. By providing a plastic pipe connector, a connecting plastic pipe, a drainage slope, an end groove, an annular groove, an annular protrusion, a plastic pipe sealing ring, and a fastening steel wire, the connecting plastic pipe is clamped outside the plastic pipe connector, and the inner side of the plastic pipe sealing ring is adhesively fixed to the outer side of the connecting plastic pipe. Due to the provision of the end groove, annular groove, and annular protrusion, the connecting plastic pipe is tightly clamped to the plastic pipe connector. Then, a section of fastening steel wire is wound around the outer side of the connecting plastic pipe at a position corresponding to the annular groove, and the fastening steel wire is tightened with pliers to fix the connecting plastic pipe, thereby connecting the connecting steel pipe and the connecting plastic pipe together. The middle parts of the connecting steel pipe, connecting plastic pipe, thickened connecting pipe, steel pipe connector, and plastic pipe connector are all connected. The provision of the buffer slope and drainage slope provides buffering for the flow of internal water, reduces the impact of water flow on the connection position, and is not likely to cause loosening of the connection position, thereby ensuring the connection stability of the connection position.
[0014] 2. By providing a thickened connecting pipe, a steel pipe connector, an internal thread, a connecting steel pipe, an external thread, a steel pipe sealing ring, an internal limiting ring, and a buffer slope, the steel pipe connector is screwed onto the outer side of the connecting steel pipe to make the internal thread cooperate with the external thread until the connecting steel pipe contacts the internal limiting ring inside the steel pipe connector to achieve limiting. Then, the inner side of the steel pipe sealing ring at one end of the steel pipe connector is adhesively connected to the outer side of the connecting steel pipe to seal the gap between the steel pipe connector and the connecting steel pipe, thereby making the connection more stable and not easily oxidized and corroded.
[0015] In summary, at one end of the connection structure, a steel pipe is connected by threading, and at the other end of the connection structure, a plastic pipe is connected by clamping and fastening steel wires. Steel pipe seals and plastic pipe seals are used at the connection to enhance the sealing effect. The internal channel is provided with a buffer inclined plane and a drainage inclined plane to reduce the impact of water flow and prevent loosening at the connection, resulting in a better overall connection effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation to the present invention.
[0017] In the accompanying drawings:
[0018] Figure 1 is a schematic structural view of the present invention;
[0019] Figure 2 is a schematic internal structural view of the thickened connecting pipe of the present invention;
[0020] Figure 3 is a schematic structural view of the plastic pipe connection of the present invention;
[0021] Figure 4 is a cross-sectional view of the present invention;
[0022] Reference numerals in the figures: 1, thickened connecting pipe; 2, steel pipe connector; 3, internal thread; 4, connecting steel pipe; 5, external thread; 6, steel pipe seal; 7, internal limit ring; 8, buffer inclined plane; 9, plastic pipe connector; 10, connecting plastic pipe; 11, drainage inclined plane; 12, end groove; 13, annular groove; 14, annular protrusion; 15, plastic pipe seal; 16, fastening steel wire. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.
[0024] Embodiment: As Figures 1-4As shown in the figure, the utility model provides a technical solution, a connection structure between a steel pipe and a plastic pipe, including a thickened connecting pipe 1. One end of the thickened connecting pipe 1 is fixedly connected with a steel pipe connector 2. An internal thread 3 is provided inside the steel pipe connector 2. A connecting steel pipe 4 is threadedly connected inside the steel pipe connector 2. One end of the connecting steel pipe 4 is screwed into the inside of the steel pipe connector 2 through the thread. One end of the connecting steel pipe 4 contacts the inner limiting ring 7, which is convenient for the limiting installation of the connecting steel pipe 4. An external thread 5 is provided at one end of the connecting steel pipe 4. A steel pipe sealing ring 6 is bonded to the end of the steel pipe connector 2. The inner diameter of the steel pipe sealing ring 6 is equal to the outer diameter of the connecting steel pipe 4. The inner side of the steel pipe sealing ring 6 is adhesively connected to the outer side of the connecting steel pipe 4, which is convenient for sealing the gap at the connection and making the connection more firm. An inner limiting ring 7 is installed inside the steel pipe connector 2, and a buffer inclined surface 8 is provided inside the inner limiting ring 7;
[0025] The other end of the thickened connecting pipe 1 is fixedly connected with a plastic pipe connector 9. A connecting plastic pipe 10 is clamped outside the plastic pipe connector 9. A drainage inclined surface 11 is provided inside one end of the plastic pipe connector 9. An end groove 12 is provided outside one end of the plastic pipe connector 9. An annular groove 13 is provided outside the plastic pipe connector 9. An annular protrusion 14 is installed outside the plastic pipe connector 9. The connecting plastic pipe 10 is clamped outside the annular protrusion 14. A structure protruding outward is formed by extrusion at the position of the connecting plastic pipe 10 corresponding to the annular protrusion 14, which is convenient for the installation of the connecting plastic pipe 10. A plastic pipe sealing ring 15 is bonded to one side of the thickened connecting pipe 1. One end of the connecting plastic pipe 10 contacts the thickened connecting pipe 1. The inner side of the plastic pipe sealing ring 15 is adhesively connected to the outer side of the connecting plastic pipe 10, which is convenient for sealing the end of the connecting plastic pipe 10. A fastening wire 16 is tightened outside the connecting plastic pipe 10. The fastening wire 16 is screwed at the position corresponding to the annular groove 13 outside the connecting plastic pipe 10. One end of the connecting plastic pipe 10 is fitted with the annular groove 13 through the extrusion of the fastening wire 16, making the installation of the connecting plastic pipe 10 more stable.
[0026] The working principle and usage process of the utility model: When connecting the plastic pipe and the steel pipe, first screw the steel pipe connector 2 outside the connecting steel pipe 4, so that the internal thread 3 and the external thread 5 cooperate with each other until the connecting steel pipe 4 contacts the inner limiting ring 7 inside the steel pipe connector 2 to achieve limiting. Then, bond the inner side of the steel pipe sealing ring 6 at one end of the steel pipe connector 2 to the outer side of the connecting steel pipe 4 to seal the gap between the steel pipe connector 2 and the connecting steel pipe 4, so that the connection is more stable and not easily oxidized and corroded;
[0027] Then, cut one end of the connecting plastic pipe 10 flat, and immerse the end to be connected in hot water to make one end of the connecting plastic pipe 10 expand due to heat. Then, quickly take out the connecting plastic pipe 10 from the hot water and snap it onto the outside of the plastic pipe connector 9. After the connecting plastic pipe 10 cools down, it will be directly clamped tightly on the outside of the plastic pipe connector 9;
[0028] Finally, bond and fix the inner side of the plastic pipe sealing ring 15 to the outer side of the connecting plastic pipe 10. Due to the settings of the end groove 12, the annular groove 13, and the annular protrusion 14, the connection between the connecting plastic pipe 10 and the plastic pipe connector 9 is tightly snapped. Then, take a section of fastening wire 16 and wind it around the position of the annular groove 13 on the outside of the connecting plastic pipe 10, and use pliers to tighten the fastening wire 16 to fix the connecting plastic pipe 10, thereby connecting the connecting steel pipe 4 and the connecting plastic pipe 10 together. The middle parts of the connecting steel pipe 4, the connecting plastic pipe 10, the thickened connecting pipe 1, the steel pipe connector 2, and the plastic pipe connector 9 are all connected;
[0029] The settings of the buffer slope 8 and the drainage slope 11 provide buffering for the flow of the internal water flow, reduce the impact of the water flow on the connection position, and are not likely to cause loosening of the connection position, thereby ensuring the connection stability of the connection position.
[0030] Finally, it should be noted that the above are only the preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A connecting structure between a steel pipe and a plastic pipe, comprising a thickened connecting pipe (1), characterized in that: One end of the thickened connecting pipe (1) is fixedly connected with a steel pipe connector (2). An internal thread (3) is provided inside the steel pipe connector (2). A connecting steel pipe (4) is threadedly connected inside the steel pipe connector (2). An external thread (5) is provided at one end of the connecting steel pipe (4). A steel pipe sealing ring (6) is bonded to the end of the steel pipe connector (2). An internal limiting ring (7) is installed inside the steel pipe connector (2). A buffer inclined surface (8) is provided inside the internal limiting ring (7). The other end of the thickened connecting pipe (1) is fixedly connected with a plastic pipe connector (9). A connecting plastic pipe (10) is clamped outside the plastic pipe connector (9). A drainage inclined surface (11) is provided inside one end of the plastic pipe connector (9). An end groove (12) is provided outside one end of the plastic pipe connector (9). An annular groove (13) is provided outside the plastic pipe connector (9). An annular protrusion (14) is installed outside the plastic pipe connector (9). A plastic pipe sealing ring (15) is bonded to one side of the thickened connecting pipe (1). A fastening wire (16) is tightened outside the connecting plastic pipe (10).
2. The connecting structure between a steel pipe and a plastic pipe according to claim 1, characterized in that: One end of the connecting steel pipe (4) is screwed into the inside of the steel pipe connector (2) through threads, and one end of the connecting steel pipe (4) contacts the internal limiting ring (7).
3. The connecting structure between a steel pipe and a plastic pipe according to claim 1, characterized in that: The inner diameter of the steel pipe sealing ring (6) is equal to the outer diameter of the connecting steel pipe (4), and the inner side of the steel pipe sealing ring (6) is adhesively connected to the outer side of the connecting steel pipe (4).
4. A connecting structure between a steel pipe and a plastic pipe according to claim 1, characterized in that: One end of the connecting plastic pipe (10) contacts the thickened connecting pipe (1), and the inner side of the plastic pipe sealing ring (15) is adhesively connected to the outer side of the connecting plastic pipe (10).
5. The connecting structure between a steel pipe and a plastic pipe according to claim 1, characterized in that: The connecting plastic pipe (10) is clamped outside the annular protrusion (14), and a structure protruding outward is formed by extrusion at the position of the connecting plastic pipe (10) corresponding to the annular protrusion (14).
6. The connecting structure of a steel pipe and a plastic pipe according to claim 1, wherein: The fastening wire (16) is screwed at the position corresponding to the annular groove (13) outside the connecting plastic pipe (10), and one end of the connecting plastic pipe (10) is attached to the position of the annular groove (13) by the extrusion of the fastening wire (16).