Detachable plastic pipe fitting

Abstract

A detachable plastic pipe fitting relates to the technical field of plastic pipe fittings, and comprises a pipe fitting main body, one end of the pipe fitting main body is provided with an adjusting pipe, the pipe fitting main body is telescopically matched with the adjusting pipe by rotating the adjusting pipe, one end of the adjusting pipe is provided with a connecting ring, the connecting ring is rotatably matched with the adjusting pipe, and one end of the connecting ring is provided with a connecting cap. A connecting cap is arranged at one end of each pipe fitting body and matched with the corresponding connecting ring in a rotating mode, a threaded head is arranged at the other end of each pipe fitting body and matched with the corresponding connecting cap, a corrugated elastic hose is installed on the inner side of each adjusting pipe, and after the two pipe fitting bodies are assembled, a sealed channel is formed by the corrugated elastic hoses. According to the scheme, the problem that the plastic pipe fitting is difficult to disassemble and replace after being installed is solved.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe fittings technology, specifically a detachable plastic pipe fitting. Background Technology

[0002] Plastic pipe fittings are plastic products made primarily from synthetic resin, processed through injection molding, extrusion, and other processes. They are used for fluid transportation, pipeline connections, and other fields. They are characterized by corrosion resistance, light weight, and easy installation, and are widely used in building water supply and drainage, chemical industry, agricultural irrigation, and other industries. Common types include elbows, tees, and straight fittings, which can meet diverse engineering needs according to different pipe diameters, pressure ratings, and connection methods.

[0003] For example, the Chinese authorized patent CN220770476U, entitled "A High-Strength Plastic Pipe Fitting", includes an inner pipe body, an outer pipe body fitted on the surface of the inner pipe body, a sealing ring plate installed between the inner and outer pipe bodies, a first inner sleeve bonded to the inside of the sealing ring plate, a second inner sleeve bonded to the surface of the first inner sleeve, an installation plate installed inside the inner pipe body, a positioning cylinder welded to one side of the installation plate, a filter screen cylinder slidably fitted to the surface of the positioning cylinder, a positioning plate set inside the filter screen cylinder, a connecting rod installed between one side of the positioning plate and the through hole of the installation plate, and a threaded rod welded to the other side of the positioning plate.

[0004] However, traditional pipe fittings are complex to connect, requiring specialized tools and skills, and consuming a lot of manpower and time. For example, heat fusion connection has extremely high requirements for operation process, and even a slight deviation will affect the connection quality. Once a problem occurs in the pipe fitting or the inside of the pipe, since traditional pipe fittings are mostly fixed connections, disassembly means large-scale damage to the pipeline system, and the repair cost will rise sharply and take a long time. Therefore, it does not meet the current needs. In response, we have proposed a detachable plastic pipe fitting. Utility Model Content

[0005] The purpose of this utility model is to provide a detachable plastic pipe fitting to solve the problem mentioned in the background art that plastic pipe fittings are difficult to disassemble and replace after installation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a detachable plastic pipe fitting, comprising a pipe fitting body, an adjusting tube installed at one end of the pipe fitting body, which expands and contracts with the pipe fitting body by rotating the adjusting tube, a connecting ring installed at one end of the adjusting tube, the connecting ring rotating with the adjusting tube, a connecting cap provided at one end of the connecting ring, the connecting cap rotating with the connecting ring, a threaded head provided at the other end of the pipe fitting body, the threaded head being adapted to the connecting cap, and a corrugated elastic hose installed inside the adjusting tube, wherein a sealed channel is formed by the corrugated elastic hose after the two pipe fitting bodies are assembled.

[0007] Preferably, an expansion groove is provided in the inner wall of one end of the pipe body, one end of the adjusting pipe is located inside the expansion groove, and the outer wall of the adjusting pipe near the end of the pipe body is provided with an adjusting thread, which is adapted to the inner thread of the expansion groove.

[0008] Preferably, both ends of the corrugated flexible hose are fixedly installed with fixing rings. One fixing ring is fixed to the inner wall of the hose body, and the other fixing ring is fixed to the connecting ring.

[0009] Preferably, an annular limiting groove is provided in the inner wall of one end of the regulating tube, and a movable ring is rotatably fitted inside the annular limiting groove, with one end of the movable ring fixed to the connecting ring.

[0010] Preferably, the connecting cap has a rubber washer inside, and the rubber washer is engaged with the connecting cap. One end of the threaded head has multiple integrally formed annular protrusions.

[0011] Preferably, an adjusting lever is welded and fixed to one end of the adjusting tube near the connecting ring.

[0012] Preferably, the moving distance of the connecting cap and the adjusting tube remains consistent when they rotate synchronously.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a connecting cap at one end of the pipe fitting body and a screw head at the other end. Therefore, when assembling the plastic pipe fitting, simply align the connecting cap of one plastic pipe fitting with the screw head of the other and rotate. The threaded engagement causes the screw head to continuously extend into the connecting cap until it compresses the rubber gasket inside the cap. Simultaneously, the outer end of the screw head has multiple annular protrusions, which also compress the rubber gasket. This multi-faceted compression ensures the rubber gasket tightly fits against all gaps at the pipe fitting connection, creating a good seal and effectively preventing fluid leakage. This ensures the safe and stable operation of the pipeline system. This assembly design effectively improves installation efficiency and reduces installation difficulty, making it easy for even non-professionals to use.

[0015] 2. This utility model enables convenient disassembly of damaged parts when pipeline problems occur. The user presses the upper and lower ends of the connecting cap with their thumb and forefinger respectively, while the joints of their thumb and forefinger press against the outer sides of the upper and lower adjustment levers. By reversing the connecting cap, the connecting cap and the adjusting tube rotate simultaneously. As the connecting cap separates from the screw head, the adjusting tube retracts into the expansion groove under the engagement of the adjusting thread on the outer wall of the adjusting tube and the thread of the expansion groove inside the pipe body. This reduces the length of the adjusting tube as it separates from the previous pipe. Then, by rotating the connecting cap of the rear pipe body, the damaged pipe can be disassembled. This design can accurately locate and disassemble the damaged part separately, avoiding unnecessary damage to other intact pipes, reducing maintenance costs and material waste, effectively ensuring that the pipeline system can be quickly restored to normal operation, and improving the maintainability and service life of the pipeline system.

[0016] 3. To improve the sealing performance of the pipe fitting, this utility model features a corrugated elastic hose installed inside the adjusting pipe. Its two ends are secured with fixing rings on the pipe fitting body and connecting ring, respectively. After assembly, the pipe fitting forms a sealed channel at the connection point, effectively blocking fluid leakage paths. The design of the connecting ring and connecting cap rotating together ensures that during pipe fitting assembly, the rotation of the connecting cap will not cause the corrugated elastic hose to rotate via the connecting ring, maintaining the stability of the sealing structure. Simultaneously, the other end of the corrugated elastic hose seals the connection between the expansion groove and the adjusting pipe, further enhancing the sealing effect. Particularly noteworthy is that as the adjusting pipe expands and contracts, the corrugated elastic hose can adaptively adjust, always maintaining a tight fit at the connection point, ensuring the continuity and reliability of the seal. The rotating engagement of the other end of the connecting ring with the adjusting pipe prevents the adjusting pipe from interfering with the corrugated elastic hose, avoiding damage to the seal due to mutual influence between components. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is another perspective view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This is a perspective view of the plastic pipe fitting connection of this utility model.

[0021] In the diagram: 1. Pipe body; 2. Adjusting pipe; 3. Adjusting thread; 4. Adjusting lever; 5. Connecting cap; 6. Rubber gasket; 7. Corrugated flexible hose; 8. Threaded head; 9. Connecting ring; 10. Expansion groove; 11. Annular limiting groove; 12. Movable ring; 13. Fixed ring; 14. Annular protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 The present invention provides an embodiment of a detachable plastic pipe fitting, comprising a pipe fitting body 1, an adjusting pipe 2 installed at one end of the pipe fitting body 1, which is telescopically coupled with the pipe fitting body 1 by rotating the adjusting pipe 2, a connecting ring 9 installed at one end of the adjusting pipe 2, and the connecting ring 9 being rotatably coupled with the adjusting pipe 2, a connecting cap 5 provided at one end of the connecting ring 9, and the connecting cap 5 being rotatably coupled with the connecting ring 9, a threaded head 8 provided at the other end of the pipe fitting body 1, and the threaded head 8 being adapted to the connecting cap 5, and a corrugated elastic hose 7 installed on the inner side of the adjusting pipe 2, which forms a sealed channel after the two pipe fitting bodies 1 are assembled;

[0024] When the regulating pipe 2 is rotated, its outer wall interacts with the inner wall of the pipe body 1, allowing the regulating pipe 2 to extend and retract, thereby adjusting the length of the pipe body 1. The connecting ring 9 rotates with the regulating pipe 2 and the connecting cap 5 respectively, ensuring that each component works independently yet collaboratively when rotating. This allows for flexible adjustment of the pipe length to adapt to different installation space requirements. The independent rotational engagement design facilitates smooth operation of each component during installation and disassembly, reducing installation difficulty and maintenance costs.

[0025] Please see Figure 1 and Figure 3 The inner wall of one end of the pipe body 1 is provided with a telescopic groove 10. One end of the adjusting pipe 2 is located inside the telescopic groove 10. The outer wall of the adjusting pipe 2 near the end of the pipe body 1 is provided with an adjusting thread 3, which is adapted to the internal thread of the telescopic groove 10. An adjusting lever 4 is welded and fixed to the end of the adjusting pipe 2 near the connecting ring 9. The moving distance of the connecting cap 5 and the adjusting pipe 2 is consistent when they rotate synchronously. The user presses the upper and lower ends of the connecting cap 5 with his thumb and forefinger respectively, while the joints of his thumb and forefinger press against the outer side of the upper and lower adjusting levers 4 respectively. By reversing the connecting cap 5, the engagement of the adjusting thread 3 with the internal thread of the telescopic groove 10 pushes the adjusting pipe 2 to extend and retract within the telescopic groove 10. When the connecting cap 5 and the adjusting pipe 2 rotate synchronously, the consistent moving distance of the two ensures the stability of the connection process. The adjusting lever 4 makes it convenient for the user to operate the rotation of the adjusting pipe 2, improving the convenience of adjustment. The synchronous and consistent movement of the connecting cap 5 and the adjusting pipe 2 ensures the accuracy and sealing of the pipe connection.

[0026] Please see Figure 1 and Figure 3Both ends of the corrugated flexible hose 7 are fixedly equipped with retaining rings 13. One retaining ring 13 is fixed to the inner wall of the fitting body 1, and the other retaining ring 13 is fixed to the connecting ring 9. After the fitting is assembled, the two retaining rings 13 are fixed to the fitting body 1 and the connecting ring 9 respectively, so that the corrugated flexible hose 7 forms a sealed channel at the connection, effectively blocking the fluid leakage path. The design of the connecting ring 9 and the connecting cap 5 rotating together ensures that when the fitting body 1 is assembled, the rotation of the connecting cap 5 will not cause the corrugated flexible hose 7 to rotate through the connecting ring 9, maintaining the stability of the sealing structure. At the same time, the connection between the sealing expansion groove 10 and the regulating pipe 2 at the other end of the corrugated flexible hose 7 further enhances the sealing effect. In particular, as the regulating pipe 2 expands and contracts, the corrugated flexible hose 7 can adaptively adjust, always tightly fitting the connection part, ensuring the continuity and reliability of the seal. The other end of the connecting ring 9 rotates with the regulating pipe 2, so that the rotation of the regulating pipe 2 will not interfere with the corrugated flexible hose 7, avoiding damage to the sealing state due to mutual influence between components.

[0027] Please see Figure 3 An annular limiting groove 11 is provided in the inner wall of one end of the regulating pipe 2. A movable ring 12 is rotatably fitted inside the annular limiting groove 11, and one end of the movable ring 12 is fixed to the connecting ring 9. The movable ring 12 rotates within the annular limiting groove 11, connecting the connecting ring 9 and the regulating pipe 2, while allowing them to rotate relative to each other. This ensures the stability of the connection between the connecting ring 9 and the regulating pipe 2, while not hindering their relative rotation according to design requirements during operation, thus enhancing the flexibility and reliability of the entire pipe structure.

[0028] Please see Figure 2 and Figure 3 The connecting cap 5 has a rubber washer 6 inside, which engages with the connecting cap 5. One end of the threaded head 8 has multiple integrally formed annular protrusions 14. When the threaded head 8 is screwed into the connecting cap 5, the annular protrusions 14 compress the rubber washer 6, ensuring a tight fit at the connection point. Under the compression of the annular protrusions 14, the rubber washer 6 further improves the sealing of the connection, preventing fluid leakage, ensuring the normal operation of the pipeline system, and extending the service life of the pipe fittings.

[0029] Working principle: During assembly, align the threaded head 8 at one end of one pipe fitting body 1 with the connecting cap 5 of the other pipe fitting body 1, and slowly rotate the connecting cap 5, allowing the threaded head 8 to gradually screw into the interior. Under the action of the threaded engagement, the threaded head 8 continuously extends into the connecting cap 5. As the screwing depth increases, the annular protrusion 14 at the outer end of the threaded head 8 compresses the rubber gasket 6. At the same time, the reduced internal space of the connecting cap 5 also compresses the rubber gasket 6. This multi-faceted compression ensures that the rubber gasket 6 tightly fits against all gaps at the pipe fitting connection, thus completing the initial connection of the two pipe fitting bodies 1 and forming a good sealing effect.

[0030] During disassembly, the user presses the upper and lower ends of the connecting cap 5 of the pipe fitting to be disassembled with their thumb and forefinger, respectively, while simultaneously placing the knuckles of their thumb and forefinger against the outer sides of the upper and lower adjusting levers 4. By reversing the connecting cap 5, as the connecting cap 5 rotates synchronously with the adjusting tube 2, the connecting cap 5 gradually separates from the threaded head 8. At the same time, the threaded engagement between the adjusting thread 3 on the outer wall of the adjusting tube 2 and the internal expansion groove 10 of the pipe fitting body 1 causes the adjusting tube 2 to retract into the expansion groove 10. As the pipe fitting separates from the previous pipe, its own length decreases, making room for subsequent operations. Rotating the connecting cap 5 of the rear pipe fitting body 1 completely separates it from the damaged pipe fitting, thereby achieving precise positioning and individual disassembly of the damaged pipe.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A detachable plastic pipe fitting, comprising a pipe fitting body (1), characterized in that: One end of the pipe body (1) is equipped with an adjusting pipe (2). The adjusting pipe (2) is rotated to extend and retract with the pipe body (1). One end of the adjusting pipe (2) is equipped with a connecting ring (9), and the connecting ring (9) is rotatably engaged with the adjusting pipe (2). One end of the connecting ring (9) is provided with a connecting cap (5), and the connecting cap (5) is rotatably engaged with the connecting ring (9). The other end of the pipe body (1) is provided with a threaded head (8), and the threaded head (8) is adapted to the connecting cap (5). A corrugated elastic hose (7) is installed on the inner side of the adjusting pipe (2). After the two pipe bodies (1) are assembled, a sealed channel is formed by the corrugated elastic hose (7).

2. The detachable plastic pipe fitting according to claim 1, characterized in that: The inner wall of one end of the pipe body (1) is provided with a telescopic groove (10), and one end of the adjusting pipe (2) is located inside the telescopic groove (10). The outer wall of the adjusting pipe (2) near the end of the pipe body (1) is provided with an adjusting thread (3), and the adjusting thread (3) is adapted to the internal thread of the telescopic groove (10).

3. A detachable plastic pipe fitting according to claim 1, characterized in that: Both ends of the corrugated flexible hose (7) are fixedly installed with fixing rings (13). One fixing ring (13) is fixed to the inner wall of the main body (1) of the hose, and the other fixing ring (13) is fixed to the connecting ring (9).

4. A detachable plastic pipe fitting according to claim 1, characterized in that: The inner wall of one end of the regulating tube (2) is provided with an annular limiting groove (11), and a movable ring (12) is rotatably fitted inside the annular limiting groove (11), and one end of the movable ring (12) is fixed to the connecting ring (9).

5. A detachable plastic pipe fitting according to claim 1, characterized in that: The connecting cap (5) is provided with a rubber gasket (6) inside, and the rubber gasket (6) is engaged with the connecting cap (5). One end of the threaded head (8) is provided with multiple integrally formed annular protrusions (14).

6. A detachable plastic pipe fitting according to claim 1, characterized in that: An adjusting lever (4) is welded and fixed to one end of the adjusting tube (2) near the connecting ring (9).

7. A detachable plastic pipe fitting according to claim 1, characterized in that: The connecting cap (5) and the adjusting tube (2) rotate synchronously and move the same distance.

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