Water pipe fitting with PPR (pentatricopeptide repeats) groove

Abstract

The utility model discloses a water pipe fitting with a hidden PPR (pentatricopeptide repeats) groove, which relates to the technical field of water pipe connection and comprises a PPR water pipe fitting body, a step structure is arranged inside a pipe connecting section of the PPR water pipe fitting body, and the step structure consists of a pipe fitting section A, a pipe fitting section B and a step surface for connecting the pipe fitting section A and the pipe fitting section B; an annular groove is formed in the step face and used for containing PPR hot melting excess materials generated during hot melting connection. The PPR pipe solves the problem that in the connecting process of an existing PPR pipe, hot melting excess materials are accumulated to form pipeline blocking points.

Description

Technical Field

[0001] This utility model discloses a water pipe fitting with a concealed PPR groove, which relates to the field of water pipe connection technology. Background Technology

[0002] In modern building and water supply systems, PPR water pipes are widely used in various pipe connection scenarios due to their excellent heat resistance, corrosion resistance, and ease of installation. PPR water pipe connections typically employ a heat fusion splicing method. This involves heat-fusioning one end of one PPR pipe with the same inner diameter and then quickly inserting it into the other PPR pipe to achieve a sealed connection. However, existing PPR pipe connection structures have significant technical flaws. During the heat fusion splicing process, because the inner casing of the PPR pipe fitting lacks a dedicated space to accommodate excess heat fusion material, this excess material is squeezed and accumulates at the end of the embedded PPR pipe, forming a blockage point. Figure 1 As shown in the image, such pipe blockages not only significantly affect the smooth flow of water inside the pipe but also easily become a hidden danger for the long-term accumulation of scale and impurities, thereby reducing the service life of the pipeline system. Furthermore, existing technologies do not effectively guide the flow of hot-melt residue, causing it to be squeezed out from the gap between the pipe end face and the stepped surface, further exacerbating the blockage problem. Therefore, how to design a PPR water pipe connection structure that can effectively accommodate and guide hot-melt residue to avoid the formation of pipe blockages has become an urgent technical challenge. Summary of the Invention

[0003] This invention addresses the problem of pipe blockage caused by the accumulation of hot melt residue during the connection of existing PPR water pipes. It proposes a water pipe fitting with a recessed PPR groove. By setting a stepped structure and annular groove inside the pipe connection section, it solves the problem of the impact of hot melt residue accumulation on the smoothness of water flow, while reducing the accumulation of scale and impurities.

[0004] This utility model provides a water pipe fitting with a recessed PPR groove, comprising a PPR water pipe fitting body. The internal structure of the pipe connection section of the PPR water pipe fitting body is designed as a stepped structure, consisting of pipe section A, pipe section B, and a stepped surface connecting the two. An annular groove for concealing excess PPR hot-melt material is provided on the stepped surface. Further, the annular groove is coaxially arranged with the PPR water pipe fitting body, and its depth is set between 1mm and 5mm. The inner diameter of pipe section A is larger than the inner diameter of pipe section B to form the stepped structure with a stepped surface; pipe section B is used as a water delivery pipe section, and pipe section A is used as a connecting pipe section.

[0005] Furthermore, during the hot-melt insertion of a PPR pipe into section A of the fitting, the excess hot-melt material on the outer wall of the PPR pipe is guided into the annular groove, rather than being squeezed out from the gap between the pipe end face and the stepped surface. The design of the annular groove allows for effective collection of the excess hot-melt material, preventing it from accumulating at the end of the inserted PPR pipe and forming a pipe blockage.

[0006] Furthermore, the geometric parameters of the annular groove are carefully designed, with a groove depth ranging from 1mm to 5mm. This range ensures sufficient volume to accommodate excess hot-melt material while avoiding increased water flow resistance due to excessive groove depth. The width of the annular groove is adjusted according to the hot-melt characteristics of the PPR material to ensure that excess hot-melt material is evenly distributed inside the groove, preventing overflow or accumulation in the water flow channel. In particular, the annular groove is coaxially arranged with the PPR water pipe fitting body (i.e., the central axis of the annular groove coincides with the central axis of the PPR water pipe fitting body). This design not only simplifies the manufacturing process but also ensures that the water flow is not affected by eccentric forces when passing through the annular groove.

[0007] The technical advantages of this invention are reflected in several aspects. First, by setting an annular groove on the stepped surface, excess hot-melt material is effectively collected, preventing it from accumulating at the end of the inserted PPR pipe and forming a pipe blockage. Second, due to the elimination of pipe blockage, water flow remains smooth when passing through the junction of the two PPR pipes, reducing the accumulation of scale and impurities.

[0008] Furthermore, the structural design of this utility model fully considers operability and reliability in practical applications. The processing technology of the annular groove is simple and can be achieved through machining or injection molding, and its geometric parameters can be adjusted according to specific application scenarios. In particular, the surface roughness of the stepped surface has been optimized to reduce additional extrusion of the hot-melt residue during the hot-melt insertion process.

[0009] In summary, this invention provides a novel PPR water pipe fitting design by incorporating a stepped structure and an annular groove within the pipe connection section. This invention not only solves the pipe blockage problem caused by the accumulation of hot-melt residue in existing technologies, but also ensures smooth water flow and the reliability of the fitting through reasonable geometric parameter design and structural optimization. In particular, the annular groove design of this invention provides a clear storage space for hot-melt residue, preventing it from interfering with the water flow channel, thereby significantly improving the overall performance of the PPR water pipe connection.

[0010] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, embodiments of this utility model are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a structural diagram of a PPR water pipe heat-fused and inserted into a PPR water pipe without grooves in the existing technology;

[0013] Figure 2 This is a cross-sectional view of a PPR pipe heat-fused into a grooved PPR water pipe in one embodiment.

[0014] Figure 3 This is a cross-sectional view of the water pipe fitting with a concealed PPR groove in the embodiment;

[0015] The attached figures are labeled as follows:

[0016] 1. PPR water pipe fittings body;

[0017] 2. PPR pipe;

[0018] 3. Annular groove;

[0019] 4. Stepped surface;

[0020] 5. Pipe fittings, section A;

[0021] 6. Pipe fittings, section B;

[0022] 7. Pipe blockage. Detailed Implementation

[0023] This utility model provides a water pipe fitting with a concealed PPR groove. By setting a stepped structure and annular groove inside the pipe connection section, it solves the problem of pipe blockage caused by the accumulation of hot melt residue in the prior art. The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0024] like Figure 3As shown, this embodiment discloses a water pipe fitting with a concealed PPR groove, including a PPR water pipe fitting body 1. The internal design of the pipe connection section of the PPR water pipe fitting body 1 is a stepped structure, which consists of pipe section A 5, pipe section B 6, and a stepped surface 4 connecting the two. An annular groove 3 for concealing PPR hot-melt residue is provided on the stepped surface 4. The annular groove 3 is coaxially arranged with the PPR water pipe fitting body 1 (i.e., the central axis of the annular groove 3 coincides with the central axis of the PPR water pipe fitting body 1), and its groove depth is set between 1mm and 5mm. The inner diameter of pipe section A 5 is larger than the inner diameter of pipe section B 6 to form a stepped structure with the stepped surface 4. Pipe section B is used as a water delivery pipe section, and pipe section A is used as a connecting pipe section.

[0025] During the hot-melt insertion of PPR pipe 2 into section A of fitting 5, the excess hot-melt material on the outer wall of PPR pipe 2 is guided into the annular groove 3, rather than being squeezed out from the gap between the pipe end face and the stepped surface 4 of PPR pipe 2. This design achieves effective collection of excess hot-melt material, preventing it from accumulating at the end of PPR pipe 2 and forming a pipe blockage point 7.

[0026] Furthermore, the geometric parameters of the annular groove 3 have been carefully designed. Its depth ranges from 1mm to 5mm, ensuring sufficient volume to accommodate excess heat-fused material while avoiding increased water flow resistance due to excessive depth. The width of the annular groove 3 is adjusted according to the heat-fused characteristics of the PPR material, ensuring that the excess heat-fused material is evenly distributed within the groove, preventing overflow or accumulation in the water flow channel. The annular groove 3 is coaxially arranged with the PPR water pipe fitting body 1. This design simplifies the manufacturing process and ensures that water flow is not affected by eccentric forces when passing through the annular groove 3. After the excess heat-fused material is guided into the annular groove 3, its volume is confined within the groove, preventing significant impact on the water flow channel. In addition, the surface of the annular groove 3 is optimized to reduce the adhesion of excess heat-fused material within it, thus facilitating subsequent cleaning or maintenance.

[0027] The inner diameter of section A 5 of the pipe fitting shown in the figure is designed to be equal to the outer diameter of PPR pipe 2. In fact, since it is a hot-melt sealing process between PPR pipes, the outer diameter of PPR pipe 2 and the body 1 of PPR water pipe fitting can be the same. This can also ensure that PPR pipe 2 can be smoothly inserted and realized, but more hot-melt residue will be generated.

[0028] The inner diameter of section B 6 of the fitting is equal to the inner diameter of PPR pipe 2. The position and shape of the stepped surface 4 are optimized to effectively guide and restrict the hot-melt residue during the hot-melt insertion process. When PPR pipe 2 is inserted into section A 5 of the fitting, its end face fits against the stepped surface 4, and the hot-melt residue is squeezed and flows along the shape of the stepped surface 4, eventually entering the annular groove 3. This design not only achieves effective collection of hot-melt residue but also avoids its accumulation at the end of PPR pipe 2, forming a pipe blockage point 7.

[0029] The technical advantages of this embodiment are reflected in several aspects. First, by setting an annular groove 3 on the stepped surface 4, the excess hot melt material is effectively collected, preventing it from accumulating at the end of the PPR pipe 2 and forming a pipe blockage point 7. Second, due to the elimination of the pipe blockage point 7, the water flow remains smooth when passing through the connection between the PPR pipe 2 and the fitting, reducing the accumulation of scale and impurities.

[0030] Furthermore, the structural design of this embodiment fully considers operability and reliability in practical applications. The annular groove 3 has a simple processing technology, which can be achieved through machining or injection molding, and its geometric parameters can be adjusted according to specific application scenarios. In particular, the surface roughness of the stepped surface 4 has been optimized to reduce additional compression of the hot-melt residue during the hot-melt insertion process. In actual installation, the construction personnel only need to heat the PPR pipe 2 to an appropriate temperature and insert it into the fitting section A 5 to complete the connection. The hot-melt residue is automatically guided into the annular groove 3 without any additional operation steps. This design not only simplifies the construction process but also improves the reliability and efficiency of the connection.

[0031] In practical applications, the water pipe fitting with concealed PPR grooves in this embodiment can be widely used in domestic water supply systems, industrial piping systems, and other scenarios requiring PPR water pipe connections. In domestic water supply systems, users can connect PPR pipe 2 to the water pipe fitting of this embodiment for water supply lines in kitchens, bathrooms, or balconies. Due to the design of the annular groove 3, water flow remains smooth when passing through the connection, preventing blockages or scale buildup caused by heat-fused material. Furthermore, the depth and width of the annular groove 3 are optimized to ensure that it will not deform or fail due to water flow impact during long-term use. This design significantly extends the service life of the water pipe connection and reduces maintenance costs.

[0032] In industrial piping systems, the water pipe fittings of this embodiment also exhibit excellent performance. Under high pressure or high temperature environments, PPR water pipes need to withstand significant water flow pressure and temperature variations. The stepped structure and annular groove 3 design of this embodiment effectively address these challenges. The surface roughness of the stepped surface 4 is optimized to reduce additional compression of the heat-fused material during the heat-fusion connection process. The geometric parameters of the annular groove 3 are carefully designed to ensure stable containment capacity even under high-pressure water flow. This design significantly improves the reliability and durability of the water pipe connection, making it suitable for various complex industrial environments.

[0033] Furthermore, the water pipe fittings of this embodiment can also be used in conjunction with other types of pipe connectors to meet the needs of different scenarios. In multi-pipe systems, users can combine the water pipe fittings of this embodiment with other types of pipe fittings to construct complex water supply networks. The design of the annular groove 3 ensures smooth water flow at each connection point, avoiding blockage problems caused by the accumulation of hot melt residue.

[0034] In summary, this embodiment provides a novel PPR water pipe fitting design by incorporating a stepped structure and annular groove 3 within the pipe connection section. This solution addresses the pipe blockage issue 7 caused by the accumulation of excess heat-fused material in existing technologies. Furthermore, through reasonable geometric parameter design and structural optimization, it ensures smooth water flow and the reliability of the fitting. The annular groove 3 provides a clear storage space for excess heat-fused material, preventing it from interfering with the water flow channel and thus significantly improving the overall performance of the PPR water pipe connection.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water pipe fitting with a recessed PPR groove, comprising a PPR water pipe fitting body (1), characterized in that, The PPR water pipe fitting body (1) has a stepped structure inside the pipe connection section. The stepped structure consists of fitting section A (5), fitting section B (6) and the step surface (4) that connects the two. The stepped surface (4) is provided with an annular groove (3), which is used to accommodate the PPR hot melt residue generated during hot melt connection.

2. The water pipe fitting with concealed PPR groove according to claim 1, characterized in that, The central axis of the annular groove (3) coincides with the central axis of the PPR water pipe fitting body (1).

3. The water pipe fitting with concealed PPR groove according to claim 1, characterized in that, The groove depth of the annular groove (3) is 1~5mm.

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