CN-224214934-U - Water pipe fitting with hide PPR recess

Abstract

The utility model discloses a water pipe fitting with a hidden PPR groove, which relates to the technical field of water pipe connection and comprises a PPR water pipe fitting body, wherein a step structure is arranged in a pipe connection section of the PPR water pipe fitting body, the step structure consists of a pipe fitting section A, a pipe fitting section B and a step surface connecting the pipe fitting section A and the pipe fitting section B, an annular groove is arranged on the step surface, and the annular groove is used for accommodating PPR hot melt excess materials generated during hot melt connection. The utility model provides a pipeline plugging point problem that current PPR pipe was piled up because of the hot melt clout in the connection process and is formed.

Inventors

• ZHANG YOUFENG
• YE WUJIAN
• HAO YUNQIANG

Assignees

• 广东星艺装饰集团有限公司

Dates

Publication Date

20260508

Application Date

20250605

Claims (3)

1. 1. A water pipe fitting with a hidden PPR groove, which comprises a PPR water pipe fitting body (1) and is characterized in that, A step structure is arranged in the pipe connecting section of the PPR water pipe fitting body (1), and consists of a pipe fitting A section (5), a pipe fitting B section (6) and a step surface (4) for connecting the pipe fitting A section and the pipe fitting B section; The step surface (4) is provided with an annular groove (3), and the annular groove (3) is used for accommodating PPR hot melt residues generated during hot melt connection.
2. 2. A water pipe fitting with a hidden 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. 3. A water pipe fitting with hidden PPR groove according to claim 1, characterized in that the groove depth of the annular groove (3) is 1-5 mm.

Description

Water pipe fitting with hide PPR recess Technical Field The utility model discloses a water pipe fitting with a hidden PPR groove, and relates to the technical field of water pipe connection. Background In modern construction and water supply systems, PPR water pipes are widely used in various pipe connection scenarios due to their excellent heat resistance, corrosion resistance and installation convenience. The PPR water pipes are connected in a hot-melting plugging mode, namely, under the condition that the inner diameters and the pipe diameters of two PPR water pipes are the same, one port of one PPR water pipe is hot-melted and then the other PPR water pipe port is quickly inserted into the other PPR water pipe port so as to realize sealing connection. However, the existing PPR water pipe connection structure has obvious technical defects. In the hot-melt plugging process, because the interior of the PPR water pipe fitting of the outer sleeve lacks a space special for accommodating the excessive hot-melt residual materials, the excessive hot-melt materials can be extruded and piled up at the end position of the embedded PPR water pipe to form a pipeline plugging point, as shown in fig. 1. The blockage point of the pipeline can not only obviously influence the smoothness of water flow in the pipeline, but also easily become hidden danger of accumulated scale and impurities for a long time, thereby reducing the service life of a pipeline system. In addition, the flow direction of the hot melt residue is not effectively guided in the prior art, so that the hot melt residue is extruded from a gap between the pipe end surface and the step surface, and the blocking problem is further aggravated. Therefore, how to design a PPR water pipe connection structure capable of effectively accommodating and guiding the hot melt residues, and avoiding the formation of pipe blockage points, has become a technical problem to be solved. Disclosure of Invention Aiming at the problem that a pipeline blocking point is formed due to accumulation of hot melt excess materials in the existing PPR water pipe connection process, the utility model provides a water pipe fitting with a hidden PPR groove, which solves the problem that the accumulation of the hot melt excess materials affects the smoothness of water flow and reduces the accumulation of scale impurities by arranging a step structure and an annular groove in the pipe connection section. The utility model provides a water pipe fitting with a hidden PPR groove, which comprises a PPR water pipe fitting body. The inside of the pipe connecting section of the PPR water pipe fitting body is designed into a ladder structure, and the ladder structure consists of a pipe fitting A section, a pipe fitting B section and a step surface for connecting the pipe fitting A section and the pipe fitting B section. The step surface is provided with an annular groove for hiding PPR hot-melt residues. Further, the annular groove and the PPR water pipe fitting body are coaxially arranged, and the groove depth is set to be between 1mm and 5mm. The inner diameter of the pipe fitting A section is larger than that of the pipe fitting B section to form a step structure with a step surface, the pipe fitting B section is used as a water delivery pipe section, and the pipe fitting A section is used as a connecting pipe section. Further, during hot melt plugging of a certain PPR pipe in the pipe section a, the hot melt remainder of the outer wall of the PPR pipe is guided into the annular groove instead of being extruded from the gap between the pipe end face and the step face of the PPR pipe. The design of the annular groove enables the hot melt excess material to be effectively contained, and the hot melt excess material is prevented from being accumulated at the end head of the inserted PPR pipe to form a pipeline plug point. Further, the geometric parameters of the annular groove are carefully designed, the groove depth is 1mm to 5mm, and the range ensures enough volume to contain hot melt residues and avoids the increase of water flow resistance caused by overlarge groove depth. The width of the annular groove is adjusted according to the hot melting characteristic of the PPR material so as to ensure that the hot melting residual material can be uniformly distributed in the groove without overflowing or accumulating in the water flow channel. In particular, the annular groove and the PPR water pipe fitting body are coaxially arranged (namely, the central axis of the annular groove coincides with the central axis of the PPR water pipe fitting body), so that the design not only simplifies the processing technology, but also ensures that water flow cannot be influenced by eccentric force when passing through the annular groove. The technical effects of the present utility model are embodied in various aspects. Firstly, through setting up the annular groove on the step face, the hot melt surplus materia