Double-layer co-extrusion MPP pipe
By improving the installation and connection component structure, the problem of requiring a high level of technology for the connection of existing double-layer co-extruded MPP pipes has been solved, achieving improved stability and sealing performance, and enhancing the overall strength of the pipeline.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-27
- Publication Date
- 2026-04-03
AI Technical Summary
The existing connection method for double-layer co-extruded MPP pipes requires a high level of technical expertise. Improper operation can easily lead to incomplete or false welds, reducing the strength of the pipe.
The system employs mounting and connecting components, including mounting plates, connecting plates, positioning tubes, sealing rings, positioning grooves, and connecting screws, to achieve stable snap-fit and sealing of the MPP mounting tubes and connecting tubes.
It improves the connection stability and sealing effect of MPP pipes, simplifies construction operations, and enhances the overall strength of the pipeline.
Smart Images

Figure CN224079789U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of MPP pipe technology, specifically a double-layer co-extruded MPP pipe. Background Technology
[0002] MPP uses modified polypropylene as its main raw material. It is a construction project that does not require a lot of dredging, excavation and road surface damage to lay pipelines and cables in special sections such as roads, railways, buildings and riverbeds. Compared with the traditional trenching and burying method, trenchless power pipe engineering is more in line with current environmental protection requirements.
[0003] Currently, the connection methods for double-layer co-extruded MPP pipes typically include hot-melt connection and electrofusion connection. These connection methods require construction personnel to have a high level of technical skill and operational experience to ensure the quality of the connection. If the construction personnel operate improperly, such as poor temperature control during hot-melt connection or connection time that is too long or too short, problems such as incomplete welding or false welding may occur at the connection points, significantly reducing the overall strength of the pipeline. Therefore, those skilled in the art have provided a double-layer co-extruded MPP pipe to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this invention is to provide a double-layer co-extruded MPP pipe to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A double-layer co-extruded MPP pipe includes an installation assembly and a connecting assembly. The installation assembly includes an installation plate, on the inner wall of which an MPP installation pipe is installed. The connecting assembly includes a connecting plate, on the inner wall of which an MPP connecting pipe is installed. Both the outer surfaces of the MPP installation pipe and the outer surfaces of the MPP connecting pipe are equipped with annularly arranged triangular plates. The outer surfaces of one set of triangular plates are connected to the installation plate, and the outer surfaces of another set of triangular plates are connected to the connecting plate.
[0007] As a further embodiment of this utility model: the outer surface of the mounting plate is provided with a ring-shaped arrangement of connecting blocks, each of the connecting blocks having a connecting hole on its outer surface, and the outer surface of the mounting plate having a ring-shaped arrangement of positioning holes.
[0008] As a further improvement of this utility model: each set of connecting holes is provided with connecting screws inside, and the outer surface of the mounting plate is provided with a ring-shaped arrangement of positioning grooves.
[0009] As a further embodiment of this utility model: a positioning tube is installed on the outer surface of the mounting plate, a sealing ring is installed on the outer surface of the positioning tube, and a positioning groove is formed on the outer surface of the mounting plate.
[0010] As a further improvement of this utility model: all connecting grooves are opened on the outer surface of the connecting plate, and positioning rods arranged in a ring are installed on the outer surface of the connecting plate.
[0011] As a further improvement of this utility model: a fixing tube is installed on the outer surface of the connecting plate, and a sealing gasket is installed on the outer surface of the fixing tube.
[0012] As a further improvement of this utility model: the outer surface of the connecting plate is equipped with a ring of ear plates, and each ear plate has a threaded hole on its outer surface.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This double-layer co-extruded MPP pipe, through the design of positioning tubes, sealing rings, positioning grooves, connecting grooves, fixing tubes, and sealing gaskets, not only facilitates the snap-fit connection of MPP installation tubes and MPP connecting tubes, but also improves the sealing effect of MPP installation tubes and MPP connecting tubes. The positioning holes and positioning rods make the MPP installation tubes and MPP connecting tubes more stable during operation. The design of connecting blocks, connecting holes, connecting screws, ear plates, and threaded holes allows for the assembly and disassembly of MPP installation tubes and MPP connecting tubes. The triangular plate significantly increases the strength of the installation and connecting components. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a double-layer co-extruded MPP pipe.
[0016] Figure 2 A side view of a double-layer co-extruded MPP pipe;
[0017] Figure 3 A bottom view of a double-layer co-extruded MPP pipe;
[0018] Figure 4 This is a top view of a double-layer co-extruded MPP pipe.
[0019] In the diagram: 1. MPP mounting tube; 2. Mounting assembly; 201. Mounting plate; 202. Connecting block; 203. Connecting hole; 204. Connecting screw; 205. Positioning tube; 206. Sealing ring; 207. Positioning hole; 208. Positioning groove; 3. MPP connecting tube; 4. Connecting assembly; 401. Connecting plate; 402. Connecting groove; 403. Fixing tube; 404. Sealing gasket; 405. Ear plate; 406. Threaded hole; 407. Positioning rod; 5. Triangle plate. Detailed Implementation
[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] Please see Figures 1-4 In this embodiment of the present invention, a double-layer co-extruded MPP pipe includes an installation assembly 2 and a connecting assembly 4. The installation assembly 2 includes an installation plate 201, on the inner wall of which an MPP installation pipe 1 is installed. The connecting assembly 4 includes a connecting plate 401, on the inner wall of which an MPP connecting pipe 3 is installed. Both the outer surfaces of the MPP installation pipe 1 and the MPP connecting pipe 3 are equipped with annularly arranged triangular plates 5. One set of triangular plates 5 has its outer surface connected to the installation plate 201, and another set has its outer surface connected to the connecting plate 401. This not only facilitates people's use of the pipe but also... This method enables rapid connection of MPP pipes and improves the sealing effect at the connection between MPP installation pipe 1 and MPP connecting pipe 3. This addresses the issue raised in the background technology that current connection methods for double-layer co-extruded MPP pipes typically include heat fusion and electrofusion. These connection methods require construction personnel to have a high level of technical expertise and operational experience to ensure the quality of the connection. If the construction personnel operate improperly, such as poor temperature control during heat fusion connection or connection time that is too long or too short, problems such as incomplete welding or false welding may occur at the connection points, significantly reducing the overall strength of the pipeline.
[0023] The outer surface of the mounting plate 201 is equipped with annularly arranged connecting blocks 202, each connecting block 202 having a connecting hole 203 on its outer surface. The outer surface of the mounting plate 201 is also equipped with annularly arranged positioning holes 207, and each set of connecting holes 203 has a connecting screw 204 inside. The outer surface of the mounting plate 201 is also equipped with annularly arranged positioning grooves 208. A positioning tube 205 is also installed on the outer surface of the mounting plate 201, and a sealing ring 206 is installed on the outer surface of the positioning tube 205. The positioning grooves 208 on the outer surface of the mounting plate 201 not only facilitate quick assembly of the MPP mounting tube 1 and the MPP connecting tube 3, but also significantly increase the stability of the MPP mounting tube 1 and the MPP connecting tube 3.
[0024] All connecting grooves 402 are opened on the outer surface of the connecting plate 401. A ring-shaped positioning rod 407 is installed on the outer surface of the connecting plate 401. A fixing tube 403 is installed on the outer surface of the connecting plate 401. A sealing gasket 404 is installed on the outer surface of the fixing tube 403. A ring-shaped ear plate 405 is installed on the outer surface of the connecting plate 401. Each ear plate 405 has a threaded hole 406 on its outer surface, which can improve the sealing effect between the MPP mounting tube 1 and the MPP connecting tube 3 and prevent leakage between the MPP mounting tube 1 and the MPP connecting tube 3.
[0025] The working principle of this utility model is as follows: First, the positioning tube 205, positioning rod 407, and fixing tube 403 can be snapped into the positioning groove 208, connecting groove 402, and positioning hole 207 respectively. After the MPP mounting tube 1 and MPP connecting tube 3 are snapped into place, the connecting screw 204 can be installed into the threaded hole 406 to fix the MPP mounting tube 1 and MPP connecting tube 3. The sealing ring 206 and sealing gasket 404 can prevent leakage at the MPP mounting tube 1 and MPP connecting tube 3.
[0026] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A double-layer co-extruded MPP pipe, comprising an installation assembly (2) and a connecting assembly (4), characterized in that, The mounting assembly (2) includes a mounting plate (201), on the inner wall of which an MPP mounting tube (1) is mounted. The connecting assembly (4) includes a connecting plate (401), on the inner wall of which an MPP connecting tube (3) is mounted. Both the outer surface of the MPP mounting tube (1) and the outer surface of the MPP connecting tube (3) are equipped with annularly arranged triangular plates (5), one set of which has an outer surface connected to the mounting plate (201) and the other set of which has an outer surface connected to the connecting plate (401).
2. The double-layer co-extruded MPP pipe according to claim 1, characterized in that, The outer surface of the mounting plate (201) is provided with annularly arranged connecting blocks (202), each connecting block (202) having a connecting hole (203) on its outer surface, and the outer surface of the mounting plate (201) having annularly arranged positioning holes (207).
3. The double-layer co-extruded MPP pipe according to claim 2, characterized in that, Each set of connecting holes (203) is provided with connecting screws (204) inside, and the outer surface of the mounting plate (201) is provided with a ring-shaped arrangement of positioning grooves (208).
4. The double-layer co-extruded MPP pipe according to claim 1, characterized in that, The mounting plate (201) is provided with a positioning tube (205) on its outer surface, a sealing ring (206) on its outer surface, and a positioning groove (208) on its outer surface.
5. The double-layer co-extruded MPP pipe according to claim 1, characterized in that, All connecting grooves (402) are opened on the outer surface of the connecting plate (401), and a ring-shaped positioning rod (407) is installed on the outer surface of the connecting plate (401).
6. The double-layer co-extruded MPP pipe according to claim 1, characterized in that, A fixing tube (403) is installed on the outer surface of the connecting plate (401), and a sealing gasket (404) is installed on the outer surface of the fixing tube (403).
7. The double-layer co-extruded MPP pipe according to claim 1, characterized in that, The outer surface of the connecting plate (401) is equipped with a ring of ear plates (405), and each ear plate (405) has a threaded hole (406) on its outer surface.