A high-strength PPR water supply pipe

Abstract

This utility model provides a high-strength PPR water supply pipe, including a main pipe body. Connecting components are provided on both sides of the main pipe body, facilitating the connection of external extension pipes. The main pipe body includes an inner pipe, a reinforcing pipe, a composite layer, and an outer layer. The reinforcing pipe is sleeved on the outer wall of the inner pipe, the composite layer is sleeved on the outer wall of the reinforcing pipe, and the outer layer is sleeved on the outer wall of the composite layer. This multi-layered composite structure enhances the pipe's compressive strength. The reinforcing pipe has internal reinforcing ribs, and the outer wall of the composite layer is sleeved with annular reinforcing ribs and fiberglass mesh, further improving the pipe's compressive strength and impact resistance. The connecting components include a connector pipe, a tightening pipe, and a rubber ring fixedly connected to both sides of the main pipe body. The tightening pipe is threaded to one end of the connector pipe, and the rubber ring is sleeved on the outside of the tightening pipe. The detachable threaded connection facilitates later maintenance and pipeline adjustment.

Description

Technical Field

[0001] This utility model relates to the field of water supply pipe technology, specifically a high-strength PPR water supply pipe. Background Technology

[0002] PPR water pipes are a type of polymer pipe, commonly known as type 3 polypropylene. PPR pipes are a replacement for UPVC water pipes, aluminum-plastic composite pipes, PE pipes, and PE-RT pipes. Because they use random copolymerization technology, the strength and high-temperature resistance of polypropylene are well guaranteed, making them a mainstream water pipe material.

[0003] A modified high-strength PPR water pipe, disclosed in patent number "CN217234854U", includes: an outer casing; a first sliding groove, the first sliding groove being formed on the inner side of the outer casing, a snap-fit ​​plate slidably connected to the inner side of the first sliding groove, a sliding post fixedly installed at the bottom of the snap-fit ​​plate, a spring fixedly installed at the bottom of the sliding post, and a fixing post sleeved on the outer side of both the spring and the sliding post; a sliding ring, the sliding ring being fixedly installed at the bottom of the fixing post, and a second sliding groove being formed on both sides of the inner side of the sliding ring; and a first limiting plate, the first limiting plate slidably connected to the inner side of the second sliding groove, and a fixing ring fixedly installed on one side of the first limiting plate. The fixing ring can fix the water pipe, allowing the water pipe to be installed in the middle position of the outer casing, and sliding on the inner side of the fixing post via the sliding post. When water flows through the water pipe, it can provide a certain buffering effect.

[0004] However, the above-mentioned device still has the following problems during implementation: 1. Traditional PPR water supply pipes are mostly single-layer structures or only use simple double-layer composite structures. When subjected to high water pressure and external impacts (such as construction collisions and soil compression), they are prone to cracking and deformation. This poses significant safety hazards, especially in scenarios such as water supply for high-rise buildings and underground laying. 2. When the water supply system needs to extend the pipeline, the two ends of the existing PPR water supply pipe usually need to be connected by hot-melt butt welding or by adding a joint. Hot-melt butt welding has high requirements for operation process, while joint connection increases the risk of leakage and construction cost. Moreover, it is difficult to achieve a fast and stable extension connection with either method. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength PPR water supply pipe to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-strength PPR water supply pipe includes a main pipe body with connecting components on both sides for easy connection of external extension pipes. The main pipe body includes an inner pipe, a reinforcing pipe, a composite layer, and an outer layer. The reinforcing pipe is sleeved on the outer wall of the inner pipe, the composite layer is sleeved on the outer wall of the reinforcing pipe, and the outer layer is sleeved on the outer wall of the composite layer. The multi-layer composite structure enhances the pressure resistance of the pipe body. The reinforced tube is provided with tube-attached reinforcing ribs inside, and the outer wall of the composite layer is fitted with annular reinforcing ribs and fiberglass mesh, which further improves the compressive strength and impact resistance of the tube.

[0007] Preferably, the connecting assembly includes a connector tube, a tightening tube, and a rubber ring fixedly connected to both sides of the main body. The tightening tube is threaded to one end of the connector tube, and the rubber ring is fitted onto the outside of the tightening tube.

[0008] Preferably, the connection structure at both ends of the connector pipe includes a socket and a spigot. The socket is located on the inner wall of one end of the main pipe, and the inner wall of the connector pipe has an internal thread. The spigot is located on the outer wall of the other end of the connector pipe, and the outer wall has an external thread. The inner diameter of the socket matches the outer diameter of the spigot. The pitch and thread profile of the internal and external threads are consistent. At the same time, a sealing groove is provided at the end of the socket. The screw-in pipe is installed in the sealing groove and then sealed by the rubber ring. When two water pipes are connected, the spigot of one water pipe can be screwed into the socket of the other water pipe. The sealing connection is achieved through the threaded fit and the rubber sealing ring.

[0009] Preferably, the inner wall of the reinforcing tube has multiple sets of through holes evenly distributed at equal intervals, and the tube-attached reinforcing ribs are respectively disposed inside the multiple sets of through holes.

[0010] Preferably, the annular reinforcing rib is made of high-strength PPR material and is integrally injection molded with the inner and outer layers to ensure structural stability and prevent delamination.

[0011] Preferably, the glass fiber mesh is woven from alkali-free glass fiber and its surface is coated with a hot melt adhesive layer, which can be tightly bonded to the inner and outer PPR materials during injection molding, thereby improving the interfacial bonding strength.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The pipe body adopts a multi-layer composite structure consisting of an inner pipe, a reinforcing pipe, a composite layer, and an outer layer. The annular reinforcing ribs in the reinforcing layer can effectively improve the axial and radial compressive strength of the pipe body, while the fiberglass mesh can enhance the impact resistance and tensile strength of the pipe body, which can meet the high-strength requirements of high-rise buildings, underground laying, and other scenarios. 2. By setting threaded sockets and spigots at both ends of the main pipe and using rubber sealing rings, two water pipes can be quickly connected by manual screwing without the need for professional heat fusion equipment. The connection provides excellent sealing performance, and the removability of the threaded connection facilitates later maintenance and pipeline adjustment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the main body of this utility model; Figure 3 This is an exploded view of the reinforcing tube portion of this utility model; Figure 4 This is an exploded structural diagram of the main body of this utility model; Figure 5 This is an exploded structural diagram of the connecting component of this utility model.

[0014] In the diagram: 1. Main tube; 101. Inner tube; 102. Reinforcing tube; 103. Composite layer; 104. Outer layer; 2. Connecting assembly; 201. Joint tube; 202. Tightening tube; 203. Rubber ring; 3. Pipe reinforcing rib; 4. Annular reinforcing rib; 5. Fiberglass mesh. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-5 This utility model provides a technical solution: A high-strength PPR water supply pipe includes a main pipe body 1, with connecting components 2 on both sides of the main pipe body 1. The connecting components 2 facilitate the connection of external extension pipes. The main pipe body 1 includes an inner pipe 101, a reinforcing pipe 102, a composite layer 103, and an outer layer 104. The reinforcing pipe 102 is sleeved on the outer wall of the inner pipe 101, the composite layer 103 is sleeved on the outer wall of the reinforcing pipe 102, and the outer layer 104 is sleeved on the outer wall of the composite layer 103. Through the multi-layer composite structure, the pressure resistance of the pipe body is enhanced. The inner part of the reinforcing tube 102 is provided with tube-attached reinforcing ribs 3, and the outer wall of the composite layer 103 is fitted with annular reinforcing ribs 4 and fiberglass mesh 5, which further improves the compressive strength and impact resistance of the tube body. The connecting component 2 includes a connector tube 201, a tightening tube 202 and a rubber ring 203 fixedly connected to both sides of the main body 1. The tightening tube 202 is threaded to one end of the connector tube 201, and the rubber ring 203 is sleeved on the outside of the tightening tube 202. The connection structure at both ends of the connector pipe 201 includes a socket and a spigot. The socket is located on the inner wall of one end of the main pipe 1, and the inner wall of the connector pipe 201 is provided with an internal thread. The spigot is located on the outer wall of the other end of the connector pipe 201, and the outer wall is provided with an external thread. The inner diameter of the socket matches the outer diameter of the spigot. The pitch and thread profile of the internal thread and the external thread are consistent. At the same time, a sealing groove is provided at the end of the socket. The pipe 202 is tightened and installed in the sealing groove, and then sealed by the rubber ring 203. When two water pipes are connected, the spigot of one water pipe can be screwed into the socket of the other water pipe. The sealing connection is achieved through the threaded fit and the rubber sealing ring. Multiple sets of through holes are evenly distributed and spaced on the inner wall of the reinforcing tube 102, and the tube-attached reinforcing ribs 3 are respectively set inside the multiple sets of through holes; The ring-shaped reinforcing rib 4 is made of high-strength PPR material and is injection molded as a whole with the inner and outer layers to ensure structural stability and prevent delamination. The fiberglass mesh 5 is woven from alkali-free fiberglass and coated with a hot melt adhesive layer. During the injection molding process, it can be tightly bonded to the inner and outer PPR materials, thereby improving the interfacial bonding strength.

[0017] Working principle: During use, the main pipe 1 adopts a multi-layer composite structure consisting of an inner tube 101, a reinforcing tube 102, a composite layer 103, and an outer layer 104. The annular reinforcing ribs 4 in the composite layer 103 can effectively improve the axial and radial compressive strength of the main pipe 1, while the fiberglass mesh 5 can enhance the impact resistance and tensile strength of the pipe. The connecting components 2 at both ends of the main pipe 1 are equipped with threaded sockets and spigots, and with rubber sealing rings, no professional hot-melt equipment is required. The two water pipes can be quickly connected by simply turning them by hand. The connection has excellent sealing performance, and the detachability of the threaded connection facilitates later maintenance and pipeline adjustment.

[0018] 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 high-strength PPR water supply pipe, comprising a main pipe body (1), characterized in that: The main body (1) is provided with connecting components (2) on both sides, which facilitates the connection of external extension pipes. The main body (1) includes an inner tube (101), a reinforcing tube (102), a composite layer (103), and an outer layer (104). The reinforcing tube (102) is sleeved on the outer wall of the inner tube (101), the composite layer (103) is sleeved on the outer wall of the reinforcing tube (102), and the outer layer (104) is sleeved on the outer wall of the composite layer (103). Through the multi-layer composite structure, the pressure resistance of the tube body is enhanced. The reinforcing tube (102) is provided with a tube-attached reinforcing rib (3), and the outer wall of the composite layer (103) is fitted with annular reinforcing ribs (4) and glass fiber mesh (5), which further improves the compressive strength and impact resistance of the tube.

2. The high-strength PPR water supply pipe according to claim 1, characterized in that: The connecting assembly (2) includes a connector tube (201), a tightening tube (202) and a rubber ring (203) fixedly connected to both sides of the main body (1). The tightening tube (202) is threaded to one end of the connector tube (201), and the rubber ring (203) is sleeved on the outside of the tightening tube (202).

3. A high-strength PPR water supply pipe according to claim 2, characterized in that: The connection structure at both ends of the connector pipe (201) includes a socket and a spigot. The socket is set on the inner wall of one end of the main pipe body (1). The inner wall of the connector pipe (201) is provided with an internal thread. The spigot is set on the outer wall of the other end of the connector pipe (201). The outer wall is provided with an external thread. The inner diameter of the socket matches the outer diameter of the spigot. The pitch and tooth profile of the internal thread and the external thread are consistent. At the same time, a sealing groove is provided at the end of the socket. The tightening pipe (202) is installed in the sealing groove and then sealed by the rubber ring (203). When two water pipes are connected, the spigot of one water pipe can be screwed into the socket of the other water pipe. The sealing connection is achieved through the threaded fit and the rubber sealing ring.

4. A high-strength PPR water supply pipe according to claim 1, characterized in that: The inner wall of the reinforcing tube (102) is provided with multiple sets of through holes evenly distributed at equal intervals, and the tube-attached reinforcing ribs (3) are respectively set inside the multiple sets of through holes.

5. A high-strength PPR water supply pipe according to claim 1, characterized in that: The annular reinforcing rib (4) is made of high-strength PPR material and is integrally injection molded with the inner and outer layers to ensure structural stability and avoid delamination.

6. A high-strength PPR water supply pipe according to claim 1, characterized in that: The glass fiber mesh (5) is woven from alkali-free glass fiber and its surface is coated with a hot melt adhesive layer. During the injection molding process, it can be tightly bonded to the inner and outer PPR materials to improve the interface bonding strength.

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