A type of PVC-U drainage pipe

Abstract

This utility model relates to the field of drainage pipe technology and discloses a PVC-U drainage pipe, including a drainage pipe 1 on the left, a drainage pipe 2 on the right, and an elastic rubber sleeve fitted at the joint. Both the drainage pipe 1 and the drainage pipe 2 have a mid-section disassembly mechanism on their inner and outer sides. This PVC-U drainage pipe, through its mid-section disassembly mechanism, allows for the replacement of the original adhesive structure with a detachable flange at the mid-section joint of the pipe during use. This ensures sealing while eliminating the need for cutting during pipe maintenance and unclogging; only disassembly is required. This avoids the limitations of needing adhesive fixation during cutting and unclogging. After maintenance, it can be installed and used directly without waiting. Furthermore, the assembly method does not damage the original drainage pipe structure; only a customized fit based on the pipe model is required.

Description

Technical Field

[0001] This utility model relates to the field of drainage pipe technology, specifically a PVC-U drainage pipe. Background Technology

[0002] PVC-U drainage pipes are made of unplasticized polyvinyl chloride and are specifically designed for internal or external drainage systems in buildings. They have high hardness and strength, good rigidity, excellent chemical corrosion resistance, good weather resistance, can withstand certain pressure and impact, will not easily deform, and have good resistance to acids, alkalis, and salts. They are very suitable for transporting domestic sewage, rainwater, and some industrial wastewater, and can maintain their performance over a wide temperature range and resist ultraviolet radiation.

[0003] In existing technologies, the socket bonding method is typically used for the butt joint installation of PVC-U drainage pipes. This involves cutting the pipe to the required length using a pipe cutter, ensuring the cut is straight and perpendicular to the pipe axis, and removing burrs and debris. After cleaning, an insertion depth line is marked on the spigot end. Using a special brush, a thin, even layer of adhesive is first applied to the inner wall of the socket, and then another thin, even layer to the outer wall of the spigot. While the adhesive is still dissolved, the pipe is quickly inserted into the socket. After the adhesive cures, the butt joint installation is complete. However, in practical use, this method requires a one-day waiting period for the pipes to cure. Once bonded, the pipes are permanently fixed. Maintenance and unclogging require cutting the pipes, making internal cleaning inconvenient. Furthermore, subsequent bonding is necessary. During the curing period, the pipes cannot be used normally. Therefore, an improved PVC-U drainage pipe is needed to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a PVC-U drainage pipe to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PVC-U drainage pipe, including a drainage pipe 1 disposed on the left side, a drainage pipe 2 disposed on the right side, and an elastic rubber sleeve fitted at the joint. Both the inner and outer sides of the drainage pipe 1 and the drainage pipe 2 are provided with a mid-section disassembly mechanism.

[0006] Preferably, the mid-section disassembly mechanism includes an adhesive edge ear, which is adhered to the outside of drain pipe one and drain pipe two. An insert is slidably installed inside drain pipe one and drain pipe two. A mating flange is fixedly installed on the inner side of the insert. A sealing ring is fixedly installed on the inner side of the mating flange. An edge ear frame is sleeved on the outside of the insert. A sealing sleeve is fixedly installed inside the edge ear frame. A threaded rod slides through the adhesive edge ear, the mating flange, and the edge ear frame. A nut is installed on the external thread of the threaded rod.

[0007] Preferably, the diameter of the insertion tube corresponds to the internal aperture of drain pipe one and drain pipe two, and the outer surface of the insertion tube slides in contact with the inner wall of drain pipe one and drain pipe two.

[0008] Preferably, two sealing sleeves are provided, and both sealing sleeves are fitted onto the joint between drain pipe one and insert pipe and drain pipe two and insert pipe.

[0009] Preferably, there are two mating flanges, and the elastic rubber sleeve is fitted over the outside of the two mating flanges.

[0010] Preferably, multiple nuts are provided, and the nuts are provided on the outer side of the two adhesive side lugs, the outer side of the two mating flanges, and the inner side of the side lug frame.

[0011] Compared with the prior art, the present invention provides a PVC-U drainage pipe with the following advantages:

[0012] This PVC-U drainage pipe features a mid-section disassembly mechanism. During use, a detachable flange replaces the original adhesive structure at the mid-section joint, ensuring a tight seal. This eliminates the need for cutting during pipe maintenance and unclogging; simply disassembling avoids the limitations of adhesive fixation required after cutting and unclogging. After maintenance, it can be installed and used immediately without waiting. Furthermore, the modular design does not damage the original drainage pipe structure; it only requires customization to fit the specific pipe model. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the external structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the external structure of the mid-section disassembly mechanism of this utility model;

[0017] Figure 4 This is an exploded view of the external structure of the mid-section disassembly mechanism of this utility model.

[0018] In the diagram: 1. Drain pipe one; 2. Mid-section disassembly mechanism; 21. Adhesive side lug; 22. Insert pipe; 23. Connecting flange; 24. Sealing ring; 25. Side lug frame; 26. Sealing sleeve; 27. Threaded rod; 28. Nut; 3. Drain pipe two; 4. Elastic rubber sleeve. Detailed Implementation

[0019] 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.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Example:

[0022] Please see Figure 1-4 This utility model provides a technical solution: a PVC-U drainage pipe, including a drainage pipe 1 on the left side, a drainage pipe 3 on the right side, and an elastic rubber sleeve 4 fitted at the joint. The drainage pipe 1 and the drainage pipe 3 are provided with a mid-section disassembly mechanism 2 on their inner and outer sides.

[0023] Furthermore, the mid-section disassembly mechanism 2 includes an adhesive side lug 21, which is adhered to the outside of drain pipe 1 and drain pipe 2. An insert pipe 22 is slidably installed inside drain pipe 1 and drain pipe 2. A mating flange 23 is fixedly installed on the inside of the insert pipe 22, and a sealing ring 24 is fixedly installed on the inside of the mating flange 23. A side lug frame 25 is sleeved on the outside of the insert pipe 22, and a sealing sleeve 26 is fixedly installed inside the side lug frame 25. A threaded rod 27 slides through the inside of the adhesive side lug 21, the mating flange 23, and the side lug frame 25. A nut 28 is installed on the external thread of the threaded rod 27. By setting the mid-section disassembly mechanism 2 in the middle section of the drain pipe, the mid-section structure can be disassembled when the pipe is blocked and the blockage needs to be cleared, making it easier to clear the blockage. At the same time, it can be used directly after installation.

[0024] Furthermore, the diameter of the insertion tube 22 corresponds to the internal diameter of the drain pipe 1 and the drain pipe 2 3, and the outer surface of the insertion tube 22 slides in contact with the inner wall of the drain pipe 1 and the drain pipe 2 3. Through the insertion tube 22 corresponding to the diameter of the drain pipe 1 and the drain pipe 2 3, it can be tightly locked inside the drain pipe 1 and the drain pipe 2 3, and at the same time, it can be slidably disassembled.

[0025] Furthermore, two sealing sleeves 26 are provided, and both sealing sleeves 26 are fitted at the joint between drain pipe 1 and insert pipe 22 and drain pipe 3 and insert pipe 22, sealing the joint to prevent water from seeping out during drainage.

[0026] Furthermore, there are two mating flanges 23, and the elastic rubber sleeve 4 is fitted on the outside of the two mating flanges 23. The elastic rubber sleeve 4 fitted on the outside of the mating flanges 23 can seal the connection of the mating flanges 23 and prevent leakage at the joint with the cooperation of the sealing ring 24.

[0027] Furthermore, multiple nuts 28 are provided, and the nuts 28 are located on the outside of the two adhesive side lugs 21, the outside of the two mating flanges 23, and the inside of the side lug frame 25. Through the combination of multiple nuts 28, the two mating flanges 23 can be tightly fitted together, and the mating flanges 23 can be fixed at the center of the drain pipe 1 and the drain pipe 23, and the side lug frame 25 can be tightened.

[0028] In actual operation, when this device is used, during the installation of the mid-section disassembly mechanism 2 on the inner side of the two drain pipes 1 and 3, firstly, the sealing sleeve 26 is placed on the outside of the drain pipe 1 and 3, and a mark is made at the joint between the side ear frame 25 and the drain pipe 1 and 3. Then, the adhesive side ear 21 is fixed at the marked position by adhesive bonding, ensuring the positions of the two side ear 21s correspond. After fixing the adhesive side ear 21, sufficient space is reserved inside the drain pipe 1 and 3. After placing the side ear frame 25 on the outside of the insertion tube 22, the insertion tube 22 is inserted into the inside of the drain pipe 1 and 3, and the mating flange 23 is fitted. Then, the threaded rod 27 passes through the right side adhesive side ear 21 and side ear frame 25, and through... Next, a nut 28 is fitted onto the left end of the threaded rod 27. The nut 28 is rotated, and the threaded rod 27 is moved to the left again until the threaded rod 27 is close to the mating flange 23. Then, the nut 28 is fitted onto the outside of the threaded rod 27, so that it is placed on the outside of the mating flange 23. This operation is repeated until nuts 28 are placed on the outside of the adhesive side lug 21, the inside of the side lug frame 25, and the outside of the mating flange 23. Then, they are tightened to fit the adhesive side lug 21, the mating flange 23, and the side lug frame 25, thus completing the fastening of the mating flange 23 and the fixation of the insertion tube 22, and completing the sealing of the joint of the insertion tube 22. At the same time, during installation, the elastic rubber sleeve 4 needs to be fitted onto the outside of the insertion tube 22 in advance. After the mating flange 23 is tightened, the elastic rubber sleeve 4 is fitted onto the outside of the mating flange 23.

[0029] When cleaning and maintaining the pipes, there is no need to cut them. Simply remove the nut 28 and the flange 23 can be removed through the reserved space to clean the blockages in drain pipe 1 and drain pipe 2.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A PVC-U drainage pipe, comprising a drainage pipe one (1) disposed on the left side, a drainage pipe two (3) disposed on the right side, and an elastic rubber sleeve (4) fitted at the joint, characterized in that: Both the inner and outer sides of drain pipe 1 (1) and drain pipe 2 (3) are equipped with a mid-section disassembly mechanism (2).

2. The PVC-U drainage pipe according to claim 1, characterized in that: The mid-section disassembly mechanism (2) includes an adhesive side ear ring (21), which is bonded to the outside of drain pipe one (1) and drain pipe two (3). A tube (22) is slidably installed inside drain pipe one (1) and drain pipe two (3). A docking flange (23) is fixedly installed on the inside of the tube (22). A sealing ring (24) is fixedly installed on the inside of the docking flange (23). A side ear round frame (25) is sleeved on the outside of the tube (22). A sealing sleeve (26) is fixedly installed inside the side ear round frame (25). A threaded rod (27) slides through the inside of the adhesive side ear ring (21), docking flange (23) and side ear round frame (25). A nut (28) is installed on the external thread of the threaded rod (27).

3. A PVC-U drainage pipe according to claim 2, characterized in that: The diameter of the insertion tube (22) corresponds to the internal aperture of the first drain pipe (1) and the second drain pipe (3), and the outer surface of the insertion tube (22) slides in contact with the inner wall of the first drain pipe (1) and the second drain pipe (3).

4. A PVC-U drainage pipe according to claim 2, characterized in that: Two sealing sleeves (26) are provided, and both sealing sleeves (26) are fitted at the joint between drain pipe one (1) and insert pipe (22) and drain pipe two (3) and insert pipe (22).

5. A PVC-U drainage pipe according to claim 2, characterized in that: Two docking flanges (23) are provided, and the elastic rubber sleeve (4) is sleeved on the outside of the two docking flanges (23).

6. A PVC-U drainage pipe according to claim 2, characterized in that: Multiple nuts (28) are provided, and the nuts (28) are located on the outside of the two adhesive side lugs (21), the outside of the two mating flanges (23), and the inside of the side lug frame (25).

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