Plastic pipe fitting for quick repair

Abstract

The utility model discloses a plastic pipe fitting for quick repair, which relates to the technical field of pipeline repair, and comprises a pipe fitting main body, a sealing rubber ring and a sealing locking piece, the pipe fitting main body comprises a hot melting bell mouth section, a sealing section and a first connecting section, and the hot melting bell mouth section is coaxially connected with the sealing section; the first connecting section is connected with the hot melting socket section and arranged outside the sealing section to form a double-layer structure, a gap exists between the first connecting section and the sealing section, a second to-be-repaired pipe is inserted into the sealing section, internal threads are arranged in the first connecting section, the sealing locking piece is a pipe body and comprises a rotating section and a second connecting section, external threads are arranged outside the second connecting section, and the rotating section is connected with the second connecting section. A second to-be-repaired pipe is inserted into the sealing locking piece, the second connecting section is inserted into the gap, the external thread is connected with the internal thread, and the sealing rubber ring is located between the second to-be-repaired pipe on the sealing section and the sealing section. By means of threaded screwing and annular sealing, operation is convenient, pipeline connection is few, water circulation is not affected, and potential quality hazards of a connector are avoided.

Description

Technical Field

[0001] This utility model relates to the field of pipeline repair technology, and in particular to a plastic pipe fitting for rapid repair. Background Technology

[0002] PP-R pipes are widely used in household hot and cold water piping systems. They are typically laid in grooves in walls or floors, and then backfilled with cement after installation. In actual use, the piping system may be damaged by external impacts or have poor welds during the installation phase, leading to leaks after long-term use. In such cases, it is necessary to break open the wall or floor to carry out repairs.

[0003] Due to space constraints and the fact that both ends of the pipe to be repaired are encased in concrete, hindering movement, axial sealing methods cannot be used for repair. Existing technology uses elbows to change the sealing direction, stacking four 90° elbows to redirect the axial direction to a direction perpendicular to the pipe's axis for socket welding, resulting in a U-shaped repair section. However, this method results in two tightly fitted weld joints and connecting short pipes, leading to numerous joints, significant potential hazards, and high flow resistance due to the large number and density of elbows, affecting water flow. Utility Model Content

[0004] The purpose of this invention is to solve the problems of limited installation space, numerous joints and small flow capacity, and insufficient sealing performance due to potential joint quality issues in pipeline repair, and to provide a plastic pipe fitting for rapid repair.

[0005] To achieve the above objectives, this utility model provides a plastic pipe fitting for rapid repair, comprising a pipe fitting body, a sealing ring, and a sealing locking component. The pipe fitting body includes a heat-fused socket section, a sealing section, and a first connecting section. The heat-fused socket section and the sealing section are coaxially connected. The heat-fused socket section is used for a fusion-seal connection with a first pipe to be repaired. The first connecting section is connected to the heat-fused socket section and sleeved outside the sealing section, making the first connecting section and the sealing section a double-layer structure with a gap between them. A second pipe to be repaired is inserted into the sealing section. The inner side of the first connecting section is provided with internal threads. The sealing locking component is a pipe body, comprising a connected rotating section and a second connecting section. The outer surface of the second connecting section is provided with external threads. The second pipe to be repaired is inserted into the pipe of the sealing locking component. The second connecting section is inserted into the gap between the first connecting section and the sealing section, and the second connecting section and the first connecting section are connected by external and internal threads. The sealing ring is installed on the sealing section and located between the second pipe to be repaired and the sealing section.

[0006] Preferably, the sealing and locking component further includes a limiting ring, which is located between the rotating section and the second connecting section. The limiting ring is sleeved at the connection between the rotating section and the second connecting section, and the outer diameter of the limiting ring is larger than the outer diameter of the rotating section and the second connecting section. The limiting ring is connected to the opening of the first connecting section.

[0007] Preferably, the inner diameter of the hot-melt socket section is smaller than the outer diameter of the first pipe to be repaired.

[0008] Preferably, the inner wall of the pipe fitting body is provided with an inwardly extending limiting ring, which is located between the hot-melt socket section and the sealing section.

[0009] Preferably, the inner diameter of the sealing section is larger than the outer diameter of the second pipe to be repaired.

[0010] Preferably, the sealing section is provided with an annular positioning groove, the bottom of the annular positioning groove is provided with a plurality of sealing holes communicating with the interior of the sealing section, the sealing ring is gear-shaped, the sealing ring includes a positioning ring and a plurality of sealing platforms, the positioning ring is snapped into the annular positioning groove, and the plurality of sealing platforms are inserted into the plurality of sealing holes.

[0011] Preferably, the plurality of sealing holes are evenly distributed circumferentially along the annular positioning groove, and the sealing platform is evenly distributed circumferentially along the outer surface of the positioning ring.

[0012] Preferably, the outermost outer diameter of the sealing platform at the end near the rotating section is the same as the outer diameter of the sealing section, and the outermost outer diameter of the sealing platform at the end near the rotating section gradually increases towards the end near the hot-melt socket section.

[0013] Preferably, the pipe hole of the second connecting section is tapered, the inner diameter of the pipe opening into the sealing section of the second connecting section is consistent with the outer diameter of the sealing section, and the inner diameter of the pipe opening into the sealing section of the second connecting section gradually decreases towards the end closer to the rotating section.

[0014] Preferably, the inner diameter of the rotating section is greater than or equal to the outer diameter of the sealing section, and the outer surface of the rotating section is a regular polygon.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] This invention achieves circumferential sealing by tightening with threads and using a sealing section and sealing ring. It is easy to operate, requires fewer pipe connections, does not affect water flow, eliminates potential joint quality issues, and enhances sealing performance. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the repaired structure of a plastic pipe fitting for rapid repair according to the present utility model.

[0018] Figure 2 This is a schematic diagram showing the structural separation of a plastic pipe fitting for rapid repair according to the present utility model.

[0019] Figure 3 This is a cross-sectional view of the main body of a plastic pipe fitting for rapid repair according to the present utility model application;

[0020] Figure 4 This is a schematic diagram showing the specific structure of a sealing ring for a quick-repair plastic pipe fitting according to the present utility model.

[0021] Figure 5 This is a cross-sectional view of a sealing and locking component for a quick-repair plastic pipe fitting according to the present utility model.

[0022] Figure 6 This is a schematic diagram illustrating the installation and positioning of the sealing and locking component, the pipe to be repaired, the sealing ring, and the main body of the pipe fitting during the repair process of a quick-repair plastic pipe fitting according to this utility model application.

[0023] Figure 7 This is a schematic diagram illustrating the hot-melt socket section and the socket connection of the pipe to be repaired during the repair process of a plastic pipe fitting for rapid repair according to this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Pipe body, 101. Hot-melt socket section, 102. Limiting ring, 103. Internal thread, 104. Sealing section, 1041. Annular positioning groove, 1042. Sealing hole, 105. First connecting section; 2. Sealing ring, 201. Positioning ring, 202. Sealing platform; 3. Sealing locking element, 301. External thread, 302. Inner surface of sealing locking element, 303. Limiting ring, 304. Rotating section, 305. Second connecting section; 501. First pipe to be repaired, 502. Second pipe to be repaired. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0027] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0028] 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.

[0029] Example 1

[0030] Please see Figure 1 This utility model provides a plastic pipe fitting for rapid repair, including a pipe fitting body 1, a sealing ring 2, and a sealing locking element 3. The pipe fitting body 1 includes a heat-fusion socket section 101, a sealing section 104, and a first connecting section 105. The heat-fusion socket section 101 and the sealing section 104 are coaxially connected. The heat-fusion socket section 101 is used for a fusion-socket sealing connection with a first pipe 501 to be repaired. The first connecting section 105 is connected to the heat-fusion socket section 101 and sleeved outside the sealing section 104, making the first connecting section 105 and the sealing section 104 a double-layer structure, with a gap between the first connecting section 105 and the sealing section 104. The second pipe 502 to be repaired is inserted into the sealing section 104. The first connecting section 105 has an internal thread 103 on its inner side. The sealing locking member 3 is a pipe body. The sealing locking member 3 includes a rotating section 304 and a second connecting section 305 connected to each other. The outer surface of the second connecting section 305 has an external thread 301. The second pipe to be repaired 502 is inserted into the pipe of the sealing locking member 3. The second connecting section 305 is inserted into the gap between the first connecting section 105 and the sealing section 104. The second connecting section 305 and the first connecting section 105 are connected by the external thread 301 and the internal thread 103. The sealing ring 2 is installed on the sealing section 104 and is located between the second pipe to be repaired 502 and the sealing section 104.

[0031] Example 2

[0032] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 This embodiment 2 is based on embodiment 1, and further explains the structure of the pipe body 1, sealing ring 2 and sealing locking component 3 in embodiment 1.

[0033] In this embodiment 2, the sealing and locking component 3 further includes a limiting ring 303, which is located between the rotating section 304 and the second connecting section 305. The limiting ring 303 is sleeved at the connection between the rotating section 304 and the second connecting section 305. The outer diameter of the limiting ring 303 is larger than the outer diameter of the rotating section 304 and the second connecting section 305. The limiting ring 303 is connected to the opening of the first connecting section 105.

[0034] The inner diameter of the heat-fusion socket section 101 is smaller than the outer diameter of the first pipe to be repaired 501. The inner wall of the pipe body 1 is provided with an inwardly extending limiting ring 102, which is located between the heat-fusion socket section 101 and the sealing section 104.

[0035] In this embodiment 2, the inner diameter of the sealing section 104 is larger than the outer diameter of the second pipe to be repaired 502. The sealing section 104 is provided with an annular positioning groove 1041, and the bottom of the annular positioning groove 1041 is provided with a plurality of sealing holes 1042 communicating with the interior of the sealing section 104. The sealing ring 2 is gear-shaped and includes a positioning ring 201 and a plurality of sealing platforms 202. The positioning ring 201 is engaged in the annular positioning groove 1041, and the plurality of sealing platforms 202 are inserted into the plurality of sealing holes 1042. The plurality of sealing holes 1042 are evenly distributed circumferentially along the annular positioning groove 1041, and the sealing platforms 202 are evenly distributed circumferentially along the outer surface of the positioning ring 201. The outermost outer diameter of the sealing platform 202 near the rotating section 304 is the same as the outer diameter of the sealing section 104, and the outermost outer diameter of the sealing platform 202 near the rotating section 304 gradually increases towards the outer diameter of the hot melt socket section 101.

[0036] In this embodiment 2, the pipe hole of the second connecting segment 305 is tapered, and the inner diameter of the pipe opening into the sealing segment 104 is the same as the outer diameter of the sealing segment 104. Furthermore, the inner diameter of the pipe opening into the sealing segment 104 gradually decreases towards the end closer to the rotating segment 304. The inner diameter of the rotating segment 304 is greater than or equal to the outer diameter of the sealing segment 104, and the outer surface of the rotating segment 304 is a regular polygon.

[0037] Example 3

[0038] This embodiment 3, based on embodiments 1 and 2, describes how the various structures of this utility model are connected during the repair process of a specific embodiment.

[0039] In the actual repair process, the damaged pipe section is cut off in advance, and a certain installation distance is reserved between the first pipe to be repaired 501 and the second pipe to be repaired 502.

[0040] Please see Figure 6 , Figure 6 This is a schematic diagram illustrating the installation and positioning of the sealing locking component, the pipe to be repaired, the sealing ring, and the main body of the pipe fitting during the repair process of a quick-repair plastic pipe fitting according to this utility model application. The sealing locking component 3 is connected to the second pipe to be repaired 502; the sealing ring 2 is assembled into the sealing section of the main body 1 of the pipe fitting, wherein the positioning ring 201 is connected to the annular positioning groove 1041, and the sealing platform 202 is inserted into the sealing hole 1042. At this time, the inner diameter of the sealing ring 2 and the inner diameter of the sealing section 104 are the same and slightly larger than the outer diameter of the second pipe to be repaired 502. The main body 1 of the pipe fitting with the sealing ring 2 assembled is connected to the second pipe to be repaired 502, and the end face of the second pipe to be repaired 502 abuts against the limiting platform 102.

[0041] Please see Figure 7 , Figure 7 This is a schematic diagram illustrating the hot-melt socket section and the socket connection of the pipe to be repaired during the repair process of a plastic pipe fitting for rapid repair according to this utility model. The end face of the first pipe to be repaired 501 and the hot-melt socket section 101 of the fitting body 1 are simultaneously heated and melted using a hot-melt socket welding machine. By dragging the fitting body 1 towards the first pipe to be repaired 501, the end face of the first pipe to be repaired 501 abuts against the limiting platform 102 and is then held under pressure and cooled, achieving a molten socket seal between the first pipe to be repaired 501 and the hot-melt socket section 101.

[0042] Please see Figure 1 , Figure 1 This is a cross-sectional view of the completed repair structure of a plastic pipe fitting for rapid repair according to this utility model. The sealing locking member 3 is slid towards the pipe fitting body 1, with its inner surface 302 contacting the outer surface of the sealing section 104, and its internal thread 103 contacting the external thread 301. Rotating the sealing locking member 3 allows the internal thread 103 and external thread 301 to engage. As the sealing locking member 3 continues to move towards the pipe fitting body 1, the inner surface 302 of the second connecting section 305, due to its conical structure, continuously applies circumferential pressure to the sealing section 104 and the sealing ring 2. Through the deformation of the sealing ring 2, the sealing hole 1042 between the first pipe to be repaired 501 and the pipe fitting body 1 is filled, achieving a circumferential seal and completing the entire repair process.

[0043] In summary, the present invention, through the design of a repair pipe fitting body with a heat-fusion socket section and a circumferential sealing section, achieves circumferential sealing of the pipe to be repaired by connecting and fixing one end through a heat-fusion socket and coordinating the other end with a gear-shaped rubber ring and a sealing locking component. This solves the problems of limited installation space and multiple joints with low flow capacity. The gear-shaped rubber ring serves both positioning and sealing functions, and the threaded connection and circumferential compression achieve circumferential sealing, significantly enhancing sealing performance. Furthermore, it is easy to operate, has fewer pipe connection sections, does not affect water flow, and eliminates potential quality issues related to joints.

[0044] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A plastic pipe fitting for quick repair, characterized by The fitting includes a pipe body (1), a sealing ring (2), and a sealing locking element (3). The pipe body (1) includes a heat-fusion socket section (101), a sealing section (104), and a first connecting section (105). The heat-fusion socket section (101) and the sealing section (104) are coaxially connected. The heat-fusion socket section (101) is used to perform a fusion socket sealing connection with the first pipe to be repaired (501). The first connecting section (105) is connected to the heat-fusion socket section (101) and sleeved outside the sealing section (104), so that the first connecting section (105) and the sealing section (104) are a double-layer structure, and there is a gap between the first connecting section (105) and the sealing section (104). The second pipe to be repaired (502) is inserted into the sealing section (104). The first connecting section (105) The inner side is provided with an internal thread (103). The sealing locking member (3) is a pipe body. The sealing locking member (3) includes a rotating section (304) and a second connecting section (305) connected together. The outer surface of the second connecting section (305) is provided with an external thread (301). The second pipe to be repaired (502) is inserted into the pipe of the sealing locking member (3). The second connecting section (305) is inserted into the gap between the first connecting section (105) and the sealing section (104). The second connecting section (305) and the first connecting section (105) are connected by the external thread (301) and the internal thread (103). The sealing ring (2) is installed on the sealing section (104) and located between the second pipe to be repaired (502) and the sealing section (104).

2. A plastic pipe fitting for quick repair according to claim 1, wherein The sealing locking component (3) further includes a limiting ring (303), which is located between the rotating section (304) and the second connecting section (305). The limiting ring (303) is sleeved at the connection between the rotating section (304) and the second connecting section (305). The outer diameter of the limiting ring (303) is larger than the outer diameter of the rotating section (304) and the second connecting section (305). The limiting ring (303) is connected to the port of the first connecting section (105).

3. A plastic pipe fitting for quick repair according to claim 1, wherein The inner diameter of the hot-melt socket section (101) is smaller than the outer diameter of the first pipe to be repaired (501).

4. A plastic pipe according to claim 3, wherein The inner wall of the pipe body (1) is provided with an inwardly extending limiting ring (102), which is located between the hot melt socket section (101) and the sealing section (104).

5. A plastic pipe fitting for quick repair according to claim 1, wherein The inner diameter of the sealing section (104) is larger than the outer diameter of the second pipe to be repaired (502).

6. A plastic pipe fitting for quick repair according to claim 5, wherein The sealing section (104) is provided with an annular positioning groove (1041). The bottom of the annular positioning groove (1041) is provided with a plurality of sealing holes (1042) communicating with the interior of the sealing section (104). The sealing ring (2) is gear-shaped. The sealing ring (2) includes a positioning ring (201) and a plurality of sealing platforms (202). The positioning ring (201) is engaged in the annular positioning groove (1041), and the plurality of sealing platforms (202) are inserted into the plurality of sealing holes (1042).

7. A plastic pipe according to claim 6, wherein The plurality of sealing holes (1042) are evenly distributed circumferentially along the annular positioning groove (1041), and the sealing platform (202) is evenly distributed circumferentially along the outer surface of the positioning ring (201).

8. A plastic pipe according to claim 7, wherein The outermost outer diameter of the sealing platform (202) near the rotating section (304) is consistent with the outer diameter of the sealing section (104), and the outermost outer diameter of the sealing platform (202) near the rotating section (304) gradually increases towards the outer diameter near the hot melt socket section (101).

9. A plastic pipe according to claim 1, wherein The second connecting section (305) has a tapered tube. The inner diameter of the pipe opening into the sealing section (104) of the second connecting section (305) is consistent with the outer diameter of the sealing section (104). The inner diameter of the pipe opening into the sealing section (104) of the second connecting section (305) gradually decreases towards the end closer to the rotating section (304).

10. A plastic pipe fitting for quick repair according to claim 1, wherein The inner diameter of the rotating section (304) is greater than or equal to the outer diameter of the sealing section (104), and the outer surface of the rotating section (304) is a regular polygon.

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