Water supply pipeline convenient to disassemble and assemble

By designing a water supply pipe structure that is easy to disassemble and assemble, and using components such as sealing rings, reinforcement rings and quick disassemblers, the problem of low installation efficiency of traditional water supply pipes is solved, rapid installation and disassembly are achieved, and the service life is extended.

CN223375325UActive Publication Date: 2025-09-23XINGTAI WATER GRP CO LTD
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Patent Information

Application Number
CN202422993086.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-09-23
Estimated Expiration
2034-12-05

AI Technical Summary

Technical Problem

The installation efficiency of traditional water supply pipelines is low, mainly because the buried construction method makes disassembly cumbersome and affects the construction progress.

Method used

A water supply pipeline that is easy to disassemble and assemble is designed, which adopts a pipeline, an installation structure, a reinforcement structure, a clamp interface and a quick disassembler. The installation efficiency is improved and the operation process is simplified through components such as a sealing ring, a reinforcement ring and a quick disassembler.

Benefits of technology

It realizes the rapid installation and disassembly of water supply pipelines, improves construction efficiency, extends the service life of pipelines, and ensures that the joints are leak-proof.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of water supply pipelines, in particular to a water supply pipeline convenient to disassemble and assemble, and adopts the technical scheme that the water supply pipeline convenient to disassemble and assemble comprises a pipeline, a mounting structure, a reinforcing structure, a hoop connector and a quick disassembling and assembling device, a lower bracket in the mounting structure is arranged on the lower side of a pipe body, and a filling block is fixedly connected in a gap between the lower bracket and the pipe body; the reinforcing ring is arranged on the outer surface of the pipe body, the reinforcing piece is arranged at the bottom of the pipe body, the lower clamping ring is arranged on the front side of the pipe body, the quick dismounting device is arranged at the top of the upper clamping ring, and a sealing ring is arranged at a pipeline connector, so that it is guaranteed that the pipe body cannot leak water during follow-up use; a large number of reinforcing rings and reinforcing blocks are arranged outside the pipe body, the strength of the pipe body is improved, the service life of the pipe body is prolonged, the quick dismounting device is inserted into an internal hexagonal wrench to fix a bolt in a hoop structure, the operation process is simplified, and the pipe body is convenient to mount and dismount.
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Description

Technical Field

[0001] The utility model relates to the field of water supply pipes, in particular to a water supply pipe which is easy to assemble and disassemble. Background Art

[0002] Water supply pipelines are an important part of urban infrastructure, used to transport clean water to various water points such as residential areas, commercial areas, and industrial areas. The main function of water supply pipelines is to ensure the effective transportation of water resources to meet people's daily life, industrial production, agricultural irrigation and other water needs. Its importance is self-evident and is directly related to the normal operation of the city and the quality of life of residents.

[0003] At present, the installation efficiency of traditional water supply pipelines is relatively low. During the installation process, traditional water supply pipelines need to be excavated on the ground, and the pipeline connections are complicated and the installation tools are cumbersome. The installation of water supply pipelines generally adopts buried construction. Although the buried construction method can protect the water supply pipeline, it will make its installation and disassembly troublesome, resulting in low installation efficiency.

[0004] Therefore, in order to solve the problem that the above-mentioned buried construction method can protect the water supply pipeline but makes its installation and disassembly troublesome, resulting in low installation efficiency, a water supply pipeline that is easy to disassemble and assemble can be designed to facilitate the disassembly and installation of the buried water supply pipeline. Utility Model Content

[0005] In order to overcome the problem that the buried construction method can protect the water supply pipeline, it will make its installation and disassembly become troublesome, resulting in low installation efficiency.

[0006] The technical solution of the utility model is: a water supply pipe that is easy to disassemble and assemble, including a pipe, a mounting structure, a reinforcement structure, a clamp interface and a quick disassembler, the lower bracket in the mounting structure is arranged on the lower side of the pipe body in the pipe, the filling block in the mounting structure is fixedly connected to the gap between the lower bracket and the pipe body, the reinforcement ring inside the reinforcement structure is arranged on the outer surface of the pipe body, the reinforcement sheet is arranged at the bottom of the pipe body, the lower clamping ring in the clamp interface is arranged on the front side of the pipe body, and the quick disassembler is arranged on the top of the upper clamping ring.

[0007] Preferably, a sealing ring is provided at the pipe interface, which plays an auxiliary installation role when the pipe bodies are connected to each other, and at the same time ensures that the pipe bodies will not leak during subsequent use. A gap is left between the upper bracket and the pipe body in the installation structure. When the staff puts the water supply pipe into the excavated ground, the rope can be passed through this gap to provide convenience in installation. A large number of reinforcement rings and reinforcement blocks are provided outside the pipe body to improve the strength of the pipe body and extend its service life. The inner groove of the clamp structure is adapted to the connecting ring, and there is obvious feedback on whether it is placed in place when fixing two adjacent pipes. Two rows of bolts are provided inside the clamp structure to fix adjacent pipes, and the fixing effect is better. The quick disassembler fixes the bolts in the clamp structure by inserting the hex wrench. Four bolts can be tightened or loosened in one operation, which simplifies the operation process and facilitates the installation and disassembly of the pipe body.

[0008] Preferably, the pipeline includes a pipe body, a sealing ring and a connecting ring. The outer diameter of the sealing ring is equal to the inner diameter of the pipe body. The sealing ring is fixedly connected to the front side of the inner part of the pipe body. The outer diameter of the pipe body is equal to the outer diameter of the connecting ring. The connecting ring is arranged at the front and rear ends of the pipe body. A sealing ring is arranged on the front side of the pipe body. When adjacent pipes are connected to each other, it can assist in determining the installation position. At the same time, it can also prevent water leakage at the joints after the water supply pipe is laid.

[0009] Preferably, the installation structure includes a lower bracket, a filling block, an upper bracket, a No. 1 screw hole and a No. 1 bolt. The filling block is fixedly connected to the inner side of the lower bracket. The upper bracket is arranged at the upper end of the lower bracket. The No. 1 screw hole is opened on the left and right sides of the upper bracket and the lower bracket. The No. 1 bolt is rotatably connected to the inside of the No. 1 screw hole. A filling block is provided between the lower bracket and the pipe body to provide a certain support for the pipe body. A gap is left between the upper bracket and the pipe body, which provides space for the rope to pass through when the crane is lifted during installation, providing convenience for laying the pipeline.

[0010] Preferably, the reinforcement structure includes a reinforcement ring, a reinforcement sheet, and a reinforcement block. The reinforcement ring is fixedly connected to the outer surface of the pipe body, the reinforcement sheet is fixedly connected between the two lower brackets, and the reinforcement block is fixedly connected between adjacent reinforcement rings. There are four groups of reinforcement blocks, which are located on the upper, lower, left and right sides respectively. The reinforcement rings and reinforcement blocks reinforce the pipe body to ensure the strength of the water supply pipe.

[0011] Preferably, the clamp interface includes an upper clamping ring, a lower clamping ring, a No. 2 screw hole, a No. 2 bolt and a groove. The lower clamping ring is arranged at the lower end of the front side of the tube body, and the upper clamping ring is arranged at the upper end of the front side of the tube body. Two rows of No. 2 screw holes are arranged on both sides of the upper clamping ring and the lower clamping ring. The No. 2 bolt is rotatably connected to the No. 2 screw hole. Grooves are provided inside the upper clamping ring and the lower clamping ring. The grooves are adapted to the connecting rings, which play a limiting role when connecting two adjacent tube bodies, and provide obvious feedback on whether the two adjacent pipes are placed in place.

[0012] Preferably, the quick disassembler includes a shell, a circular opening, a hexagonal shaft and a limit block. The shell is fixedly connected to the upper end of the upper retaining ring, two rows of circular openings are arranged at the bottom of the left and right sides of the shell, the hexagonal shaft is rotatably connected to the upper side of the shell, the limit block is fixedly connected to the inside of the shell, and the lower side of the shell is a semicircular arc with the same outer diameter as the upper retaining ring, so that it can be tightly installed on the upper end of the upper retaining ring. The hexagonal shaft can be connected to a hexagonal wrench to rotate the internal gear, saving time and effort.

[0013] Preferably, the quick disassembler also includes a No. 1 connecting rod, a universal joint, a No. 2 connecting rod, a limit plate, a No. 1 gear rod and a No. 2 gear rod. The No. 1 connecting rod is rotatably connected to the limit blocks on both sides, the No. 2 connecting rod is rotatably connected to the upper limit block, the universal joint is arranged between the No. 1 connecting rod and the No. 2 connecting rod and between the No. 2 connecting rod and the No. 1 gear rod, the limit plate is fixedly connected to the top of the outer shell, the No. 1 gear rod is rotatably connected to both sides inside the limit plate, the No. 2 gear rod is rotatably connected to the middle of the limit plate, the No. 1 gear rod and the No. 2 gear rod are meshed and connected, and the No. 1 gear rod on both sides is driven to rotate by rotating the No. 2 gear rod, and the rotation is transmitted to the bottom bolt through the universal joint and the connecting rod, so that the clamp interface is tightened and fixed.

[0014] Beneficial effects of the utility model:

[0015] 1. A sealing ring is provided at the pipe interface to assist in installation when the pipes are connected to each other, and to ensure that the pipes will not leak during subsequent use. A large number of reinforcement rings and reinforcement blocks are provided outside the pipe to improve the strength of the pipe and extend its service life. The quick disassembler fixes the bolts in the clamp structure by inserting an inner hexagonal wrench. Four bolts can be tightened or loosened in one operation, simplifying the operation process and facilitating the installation and disassembly of the pipe.

[0016] 2. There is a gap between the upper bracket and the pipe body in the installation structure. When the staff puts the water supply pipe into the excavated ground, they can pass the rope through this gap to provide convenience for installation;

[0017] 3. The inner groove of the clamp structure is adapted to the connecting ring, and there is obvious feedback on whether it is placed in place when fixing two adjacent pipes. Two rows of bolts are set inside the clamp structure to fix the adjacent pipes, and the fixing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the overall three-dimensional structure of the water supply pipeline that is easy to disassemble and assemble according to the present invention;

[0019] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the water supply pipe and reinforcement structure that is easy to disassemble and assemble according to the utility model;

[0020] Figure 3Shown is a schematic diagram of the three-dimensional structure of the water supply pipe installation structure that is easy to disassemble and assemble according to the present invention;

[0021] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the water supply pipe clamp interface that is easy to disassemble and assemble according to the present invention;

[0022] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the quick disassembly and assembly device for water supply pipes of the present invention that is easy to disassemble and assemble;

[0023] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the slope of the quick disassembly device for water supply pipes of the present invention that is easy to disassemble and assemble;

[0024] Description of reference numerals: 101, tube body; 102, sealing ring; 103, connecting ring; 201, lower bracket; 202, filling block; 203, upper bracket; 204, screw hole No. 1; 205, bolt No. 1; 301, reinforcement ring;

[0025] 302, reinforcement sheet; 303, reinforcement block; 401, upper snap ring; 402, lower snap ring; 403, screw hole No. 2;

[0026] 404, No. 2 bolt; 405, groove; 501, housing; 502, circular opening; 503, hexagon socket shaft;

[0027] 504, limit block; 505, connecting rod No. 1; 506, universal joint; 507, connecting rod No. 2; 508, limit plate;

[0028] 509, gear lever number one; 510, gear lever number two; DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] See also Figures 1-6In this embodiment, the utility model provides a water supply pipe that is easy to disassemble and assemble, including a pipe, a mounting structure, a reinforcement structure, a clamp interface and a quick disassembler. The lower bracket 201 in the mounting structure is arranged on the lower side of the pipe body 101 in the pipe, and the filling block 202 in the mounting structure is fixedly connected to the gap between the lower bracket 201 and the pipe body 101. The reinforcement ring 301 inside the reinforcement structure is arranged on the outer surface of the pipe body 101, and the reinforcement sheet 302 is arranged at the bottom of the pipe body 101. The lower clamping ring 402 in the clamp interface is arranged on the front side of the pipe body 101, and the quick disassembler is arranged on the top of the upper clamping ring 401. A sealing ring 102 is provided at the pipe interface, which plays an auxiliary installation role when the pipe bodies 101 are connected to each other, and at the same time ensures that the pipe body 101 is not There will be water leakage. There is a gap between the upper bracket 203 and the pipe body 101 in the installation structure. When the staff puts the water supply pipe into the excavated ground, the rope can be passed through the gap to provide convenience in installation. A large number of reinforcement rings 301 and reinforcement blocks 303 are provided on the outside of the pipe body 101 to improve the strength of the pipe body 101 and extend its service life. The inner groove 405 of the clamp structure is adapted to the connecting ring 103. When fixing two adjacent pipes, there is obvious feedback on whether it is placed in place. Two rows of bolts are provided inside the clamp structure to fix the adjacent pipes, and the fixing effect is better. The quick disassembler fixes the bolts in the clamp structure by inserting the hexagonal wrench. Four bolts can be tightened or loosened in one operation, which simplifies the operation process and facilitates the installation and disassembly of the pipe body 101.

[0031] See also Figure 2-Figure 3, in this embodiment, the pipeline includes a pipe body 101, a sealing ring 102 and a connecting ring 103. The outer diameter of the sealing ring 102 is equal to the inner diameter of the pipe body 101. The sealing ring 102 is fixedly connected to the front side of the inner part of the pipe body 101. The outer diameter of the pipe body 101 is equal to the outer diameter of the connecting ring 103. The connecting ring 103 is arranged at the front and rear ends of the pipe body 101. The sealing ring 102 is arranged on the front side of the pipe body 101. When adjacent pipes are connected to each other, it can help determine the installation position. At the same time, it can also prevent water leakage at the joints after the water supply pipe is laid. The installation structure includes a lower bracket 201, a filling block 202, an upper bracket 203, a No. 1 screw hole 204 and a No. 1 bolt 205. The filling block 202 is fixedly connected to the inner side of the lower bracket 201, the upper bracket 203 is arranged at the upper end of the lower bracket 201, and the No. 1 screw hole 204 is opened on the upper bracket 2 03 and the left and right sides of the lower bracket 201, the No. 1 bolt 205 is rotatably connected to the inside of the No. 1 screw hole 204, and a filling block 202 is provided between the lower bracket 201 and the pipe body 101, which plays a certain supporting role for the pipe body 101. A gap is not filled between the upper bracket 203 and the pipe body 101, which provides space for the rope to pass through when the crane is lifted during installation, and provides convenience for laying pipes. The reinforcement structure includes a reinforcement ring 301, a reinforcement sheet 302, and a reinforcement block 303. The reinforcement ring 301 is fixedly connected to the outer surface of the pipe body 101, the reinforcement sheet 302 is fixedly connected between the two lower brackets 201, and the reinforcement block 303 is fixedly connected between adjacent reinforcement rings 301. There are four groups of reinforcement blocks 303, which are respectively located on the upper, lower, left and right sides. The reinforcement ring 301 and the reinforcement block 303 reinforce the pipe body 101 to ensure the strength of the water supply pipe.

[0032] See also Figure 4-Figure 6In this embodiment, the clamp interface includes an upper clamping ring 401, a lower clamping ring 402, a No. 2 screw hole 403, a No. 2 bolt 404 and a groove 405. The lower clamping ring 402 is arranged at the lower end of the front side of the tube body 101, and the upper clamping ring 401 is arranged at the upper end of the front side of the tube body 101. Two rows of No. 2 screw holes 403 are arranged on both sides of the upper clamping ring 401 and the lower clamping ring 402. The No. 2 bolt 404 is rotatably connected to the No. 2 screw hole 403. The upper clamping ring 401 and the lower clamping ring 402 are both provided with a groove 405, and the groove 405 is adapted to the connecting ring 103. , plays a limiting role when connecting two adjacent pipe bodies 101, and has obvious feedback on whether the two adjacent pipes are placed in place. The quick disassembler includes a shell 501, a circular opening 502, an inner hexagonal shaft 503 and a limit block 504. The shell 501 is fixedly connected to the upper end of the upper clamping ring 401, and two rows of circular openings 502 are set at the bottom of the left and right sides of the shell 501. The inner hexagonal shaft 503 is rotatably connected to the upper side of the shell 501, and the limit block 504 is fixedly connected to the inside of the shell 501. The lower side of the shell 501 is connected to the upper clamping ring 401 has the same semicircular arc as the outer diameter, so that it is tightly installed on the upper end of the upper retaining ring 401. The inner hexagonal shaft 503 can be connected to the inner hexagonal wrench to rotate the internal gear, saving time and effort. The quick disassembly and assembly device also includes a No. 1 connecting rod 505, a universal joint 506, a No. 2 connecting rod 507, a limiting plate 508, a No. 1 gear rod 509 and a No. 2 gear rod 510. The No. 1 connecting rod 505 is rotatably connected to the limiting blocks 504 on both sides, and the No. 2 connecting rod 507 is rotatably connected to the upper limiting block 504. The universal joint 506 is set between the No. 1 connecting rod 505 and the No. 2 Between the No. 1 connecting rod 507 and between the No. 2 connecting rod 507 and the No. 1 gear rod 509, the limiting plate 508 is fixedly connected to the top of the shell 501, the No. 1 gear rod 509 is rotatably connected to both sides inside the limiting plate 508, and the No. 2 gear rod 510 is rotatably connected to the middle of the limiting plate 508. The No. 1 gear rod 509 and the No. 2 gear rod 510 are meshed and connected. By rotating the No. 2 gear rod 510, the No. 1 gear rods 509 on both sides are driven to rotate, and the rotation is transmitted to the bottom bolt through the universal joint 506 and the connecting rod, so that the clamp interface is tightened and fixed.

[0033] When working, the staff first excavates the road surface where the water supply pipe needs to be laid, and then fixes the traction rope to the gap between the upper bracket 203 and the pipe body 101 inside the installation structure, passes the traction rope through the gap, and connects it to the crane. The entire pipe is hoisted into the pre-dug pit by the crane. After placing multiple consecutive water supply pipes into the dug pit, the water supply pipes are spliced, and the tail of the previous pipe is connected to the top of the next pipe. The two pipes are aligned through the connecting rings 103 on both sides of the pipe body 101 and the sealing ring 102 on one side. After the connecting rings 103 of the two pipe bodies 101 are fitted, they are set in the clamp interface at one end of the pipe body 101. When the connecting ring 103 is placed in the clamp interface, it can be judged by feedback whether it is installed in place. If it is not installed in place, it needs to be adjusted. , if it has been installed in place, the clamp interface is locked by the quick disassembler, and the hexagonal shaft 503 on the upper part of the quick disassembler is inserted into the hexagonal shaft 503 to rotate the No. 2 gear rod 510 inside the quick disassembler. The No. 2 gear rod 510 drives the No. 1 gear rod 509 on both sides to rotate, and then the rotation is transmitted to the bolts in the clamp interface through the No. 1 connecting rod 505, the No. 2 connecting rod 507 and the universal joint 506. The No. 2 bolt 404 set on the left side of the clamp interface is a positive thread bolt, and the No. 2 bolt 404 set on the right side of the clamp interface is a reverse thread bolt to ensure that when the hexagonal shaft 503 rotates, the No. 2 bolts 404 on both sides are tightened or loosened. After tightening the No. 2 bolt 404 with the hexagonal shaft 503, remove the hexagonal shaft wrench to complete the installation and connection of the adjacent water supply pipes.

[0034] Through the above steps, a sealing ring 102 is provided at the pipe interface, which plays an auxiliary installation role when the pipe bodies 101 are connected to each other, and at the same time ensures that the pipe body 101 will not leak during subsequent use. A gap is left between the upper bracket 203 in the installation structure and the pipe body 101. When the staff puts the water supply pipe into the excavated ground, the rope can be passed through this gap to provide convenience in installation. A large number of reinforcement rings 301 and reinforcement blocks 303 are provided on the outside of the pipe body 101 to improve the strength of the pipe body 101 and extend its service life. The inner groove 405 of the clamp structure is adapted to the connecting ring 103, and there is obvious feedback whether it is placed in place when fixing two adjacent pipes. Two rows of bolts are provided inside the clamp structure to fix the adjacent pipes, and the fixing effect is good. The quick disassembler fixes the bolts in the clamp structure by inserting the hexagonal wrench. Four bolts can be tightened or loosened in one operation, which simplifies the operation process and facilitates the installation and disassembly of the pipe body 101.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A water supply pipe that is easy to disassemble and assemble, comprising a pipe and a clamp interface; characterized in that: The invention also includes a mounting structure, a reinforcement structure and a quick disassembler. The lower bracket (201) in the mounting structure is arranged on the lower side of the pipe body (101) in the pipeline. The filling block (202) in the mounting structure is fixedly connected to the gap between the lower bracket (201) and the pipe body (101). The reinforcement ring (301) inside the reinforcement structure is arranged on the outer surface of the pipe body (101). The reinforcement sheet (302) is arranged at the bottom of the pipe body (101). The lower clamping ring (402) in the clamp interface is arranged on the front side of the pipe body (101). The quick disassembler is arranged on the top of the upper clamping ring (401).

2. The water supply pipe that is easy to assemble and disassemble according to claim 1, characterized in that: The pipeline comprises a pipe body (101), a sealing ring (102) and a connecting ring (103). The outer diameter of the sealing ring (102) is equal to the inner diameter of the pipe body (101). The sealing ring (102) is fixedly connected to the front side of the inner part of the pipe body (101). The outer diameter of the pipe body (101) is equal to the outer diameter of the connecting ring (103). The connecting ring (103) is arranged at the front and rear ends of the pipe body (101).

3. The water supply pipe that is easy to assemble and disassemble according to claim 2, characterized in that: The mounting structure comprises a lower bracket (201), a filling block (202), an upper bracket (203), a No. 1 screw hole (204) and a No. 1 bolt (205), wherein the filling block (202) is fixedly connected to the inner side of the lower bracket (201), the upper bracket (203) is arranged at the upper end of the lower bracket (201), the No. 1 screw hole (204) is opened on the left and right sides of the upper bracket (203) and the lower bracket (201), and the No. 1 bolt (205) is rotatably connected to the inside of the No. 1 screw hole (204).

4. The water supply pipe that is easy to assemble and disassemble according to claim 3, characterized in that: The reinforcement structure comprises a reinforcement ring (301), a reinforcement sheet (302), and a reinforcement block (303). The reinforcement ring (301) is fixedly connected to the outer surface of the tube body (101), the reinforcement sheet (302) is fixedly connected between two lower brackets (201), and the reinforcement block (303) is fixedly connected between adjacent reinforcement rings (301). Four groups of reinforcement blocks (303) are provided, which are respectively located on the upper, lower, left, and right sides.

5. The water supply pipe that is easy to assemble and disassemble according to claim 4, characterized in that: The clamp interface comprises an upper clamping ring (401), a lower clamping ring (402), a No. 2 screw hole (403), a No. 2 bolt (404) and a groove (405), wherein the lower clamping ring (402) is arranged at the lower end of the front side of the tube body (101), and the upper clamping ring (401) is arranged at the upper end of the front side of the tube body (101), two rows of No. 2 screw holes (403) are arranged on both sides of the upper clamping ring (401) and the lower clamping ring (402), and the No. 2 bolt (404) is rotatably connected in the No. 2 screw hole (403), and grooves (405) are provided inside the upper clamping ring (401) and the lower clamping ring (402).

6. The water supply pipe that is easy to assemble and disassemble according to claim 5, characterized in that: The quick disassembler comprises a shell (501), a circular opening (502), an inner hexagonal rotating shaft (503) and a limit block (504). The shell (501) is fixedly connected to the upper end of the upper snap ring (401). Two rows of circular openings (502) are arranged on the left and right bottoms of the shell (501). The inner hexagonal rotating shaft (503) is rotatably connected to the upper side of the shell (501). The limit block (504) is fixedly connected to the inside of the shell (501).

7. The water supply pipe that is easy to assemble and disassemble according to claim 6, characterized in that: The quick disassembly and assembly device further comprises a No. 1 connecting rod (505), a universal joint (506), a No. 2 connecting rod (507), a limiting plate (508), a No. 1 gear rod (509) and a No. 2 gear rod (510), wherein the No. 1 connecting rod (505) is rotatably connected to the limiting blocks (504) on both sides, the No. 2 connecting rod (507) is rotatably connected to the upper limiting block (504), and the universal joint (506) is arranged on the No. 1 connecting rod (505). Between the No. 2 connecting rod (507) and the No. 1 gear rod (509), the limiting plate (508) is fixedly connected to the top of the housing (501), the No. 1 gear rod (509) is rotatably connected to both sides of the interior of the limiting plate (508), the No. 2 gear rod (510) is rotatably connected to the middle of the limiting plate (508), and the No. 1 gear rod (509) and the No. 2 gear rod (510) are meshed and connected.