PVC double-wall gutter water falling system

By designing a PVC double-wall gutter system, which utilizes elbows, outlet pipes, corrugated pipes, and clamps, the problem of cleaning dead corners in roof drainage systems has been solved. This has enabled the drainage system to be more flexible and easier to maintain, thereby improving building waterproofing safety and user experience.

CN223922523UActive Publication Date: 2026-02-17JIANGSU SHUANGLOU CONSTR GRP
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Patent Information

Application Number
CN202520544725.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-02-17
Estimated Expiration
2035-03-25

AI Technical Summary

Technical Problem

In existing roof drainage systems, dead corners are formed at the corners between the walls and the ground, making them difficult to clean effectively and affecting the building's waterproofing safety and user experience.

Method used

Design a PVC double-wall gutter drainage system, including elbow pipes and movable outlet pipes, combined with corrugated pipes and clamp structures, to reserve cleaning space and ensure drainage stability. Through the flexibility of the corrugated pipes and the design of the clamps, the outlet pipes can be moved flexibly and fixed stably.

Benefits of technology

It effectively avoids the problem of cleaning dead corners, improves the flexibility and ease of maintenance of the drainage system, and ensures the reliability and service life of the drainage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a PVC double-wall gutter water falling system, and relates to the technical field of roof water falling, the PVC double-wall gutter water falling system comprises a water collecting mechanism and a water falling pipe fixedly installed on the wall surface, the water collecting mechanism is arranged at the top of the water falling pipe and used for guiding roof rainwater into the water falling pipe, and the bottom of the water falling pipe is fixedly communicated with an elbow pipe; a space for cleaning is reserved between the elbow pipe and the ground, the end, away from the downpipe, of the elbow pipe is communicated with a water outlet pipe, the water outlet pipe is obliquely arranged in the direction away from the wall face, and the water outlet pipe can move in the direction away from the ground. The drainage system has the effects that the dead angle area between the bottom of the downpipe and the ground can be conveniently cleaned and maintained, and the flexibility of the drainage system is improved.
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Description

Technical Field

[0001] This application relates to the field of roof drainage technology, and in particular to a PVC double-wall gutter drainage system. Background Technology

[0002] Most buildings are equipped with roof drainage systems, which are mainly used to drain rainwater from the roof. The performance of the drainage system directly affects the building's waterproofing safety and user experience.

[0003] One related technology designs a rainwater drainage system that includes a water collection mechanism and a downpipe fixedly installed on the wall. The water collection mechanism is located at the top of the downpipe and is used to guide rainwater from the roof into the downpipe. The bottom of the downpipe extends to the ground, and the downpipe is used to guide rainwater from the roof to the ground. However, for homeowners, the corner between the wall and the ground at the downpipe becomes a dead corner, making it inconvenient to carry out cleaning work such as weeding, and therefore needs to be improved. Utility Model Content

[0004] To facilitate cleaning and maintenance of the dead-end area between the bottom of the downpipe and the ground, and to improve the flexibility of the drainage system, this application provides a PVC double-wall gutter downpipe system.

[0005] The PVC double-wall gutter drainage system provided in this application adopts the following technical solution:

[0006] A PVC double-wall gutter system includes a water collection mechanism and a downpipe fixedly installed on the wall. The water collection mechanism is located at the top of the downpipe and is used to guide rainwater from the roof into the downpipe. The bottom of the downpipe is fixed and connected to an elbow pipe. A space for cleaning is left between the elbow pipe and the ground. A water outlet pipe is connected to the end of the elbow pipe away from the downpipe. The water outlet pipe is inclined away from the wall and can move away from the ground.

[0007] By adopting the above technical solutions, the cleaning space reserved between the elbow pipe and the ground can avoid dead corners and corners. The inclined water pipe allows rainwater to be discharged away from the wall surface, minimizing water accumulation and corrosion of the wall base. When cleaning operations are required near the downpipe, the water pipe can be raised to keep it away from the ground, facilitating maintenance operations such as weeding and cleaning.

[0008] Preferably, a corrugated pipe is provided between the elbow pipe and the outlet pipe, with one end of the corrugated pipe fixedly connected to the elbow pipe and the other end of the corrugated pipe fixedly connected to the outlet pipe.

[0009] By adopting the above technical solution, the flexible structure of the corrugated pipe can buffer the mechanical stress generated when the water outlet pipe moves, and minimize the risk of pipe connection breakage caused by frequent lifting of the water outlet pipe; at the same time, the corrugated pipe can adapt to the length change requirements under different lifting heights, ensuring that the water outlet pipe can maintain reliable connection with the elbow pipe when moving at any angle.

[0010] Preferably, the elbow pipe has an integrally formed connecting pipe at one end near the outlet pipe, and the outlet pipe has a connecting groove at one end near the elbow pipe. The connecting pipe is inserted into the connecting groove, and the outer wall of the connecting pipe fits against the inner wall of the connecting groove.

[0011] By adopting the above technical solution, the connecting pipe can be inserted into the docking groove to connect the elbow pipe and the outlet pipe, ensuring coaxiality and making drainage smoother. It also facilitates installation and disassembly. Furthermore, due to the variable length of the corrugated pipe, it provides space for the connecting pipe to be inserted into or removed from the docking groove. Simultaneously, when the connecting pipe is inserted into the docking groove, the outlet pipe is in a stable state and cannot wobble freely, thus extending the service life of the corrugated pipe.

[0012] Preferably, a first clamp is fixedly installed on the outer wall of the water outlet pipe, and a set of connecting rods are symmetrically and rotatably arranged on the first clamp. The connecting rods are provided with slots. A second clamp is fixedly installed on the outer wall of the elbow pipe, and a set of first blocks are symmetrically and fixedly arranged on the second clamp. The slots correspond one-to-one with the first blocks, and the slots are fitted onto the first blocks.

[0013] By adopting the above technical solution, when cleaning is required near the drain pipe, the connecting rod can be rotated to disengage the slot from the first locking block. This allows the drain pipe to move away from the elbow pipe and the connecting pipe to disengage from the docking groove. At this point, the drain pipe can move freely away from the ground, providing sufficient space for cleaning. After cleaning, the drain pipe is reset, and the connecting rod is rotated again to re-engage the slot onto the first locking block, thus fixing the drain pipe in a stable drainage position and minimizing any shaking or displacement of the drain pipe during drainage.

[0014] Preferably, a third clamp is fixedly installed on the downpipe, and a set of second clamps are symmetrically and fixedly arranged on the third clamp. The clamp slots correspond one-to-one with the second clamps, and the clamp slots can be fitted onto the second clamps.

[0015] By adopting the above technical solution, when it is necessary to clean the area near the drain pipe, the connecting rod is rotated to disengage the slot from the first locking block, the drain pipe is lifted and moved away from the ground, and then the slot on the connecting rod is put into the second locking block. In this way, the drain pipe can be stably fixed in the raised position, without the need for manual holding or additional support to maintain the raised state of the drain pipe, making it convenient for homeowners to carry out maintenance operations such as weeding and cleaning.

[0016] Preferably, the water collection mechanism includes a gutter, a water guide plate, and a drain hopper. The drain hopper is fixed to the top of the downpipe. The gutter is installed on the side of the roof eaves. One end of the gutter is fixedly connected to the drain hopper, and the other end of the gutter is provided with a baffle plate. The gutter is inclined downwards in the direction close to the drain hopper. One end of the water guide plate is fixed to the roof eaves by expansion bolts, and the other end of the water guide plate extends directly above the gutter.

[0017] By adopting the above technical solution, the water guide plate guides the rainwater on the roof into the gutter, preventing the rainwater from flowing down the wall. The gutter is installed on the side of the roof eaves and is inclined towards the drain hopper, so that the rainwater falling into the gutter can flow naturally to the drain hopper by gravity and then be discharged through the downpipe to collect the rainwater on the roof. The water baffle is set at the other end of the gutter to prevent rainwater from overflowing from the end of the gutter.

[0018] Preferably, the water collection mechanism also includes a bracket, which is fixed to the side of the roof eaves by expansion bolts, and the gutter is hung on the bracket.

[0019] By adopting the above technical solution, the bracket is firmly fixed to the side of the roof eaves with expansion bolts, providing stable support and suspension structure for the gutter, bearing the rainwater in the gutter, and the gutter is hung on the bracket, making the installation of the gutter on the house convenient and easy for construction workers to carry out the installation operation.

[0020] Preferably, a connecting piece is fixed on the gutter, and a reinforcing block is fixed on the bracket, with the connecting piece fixed to the reinforcing block by bolts.

[0021] By adopting the above technical solution, the integrally formed connecting piece on the gutter and the reinforcing block on the bracket are fixedly connected by bolts, which further strengthens the connection strength and stability between the gutter and the bracket and prevents the gutter from detaching from the bracket.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By setting up elbows, outlet pipes, corrugated pipes, connecting pipes, and docking grooves, cleaning space is reserved at the bottom of the downpipe. Combined with the liftable outlet pipe, the problem of cleaning the corners of the wall at the outlet pipe is solved. Furthermore, the flexible and extensible characteristics of the corrugated pipe, combined with the docking structure of the connecting pipe and docking groove, allow the water pipe to move flexibly while remaining stable.

[0024] 2. By setting up a first clamp, connecting rod, slot, second clamp, first clamp, third clamp, and second clamp, when cleaning and maintaining the corner of the wall, the water outlet pipe can be suspended on the second clamp without manual support. When draining, the first clamp fixes the water outlet pipe to prevent shaking, thus balancing maintenance convenience and drainage reliability.

[0025] 3. By setting up gutters, water guides, downspouts, baffles, brackets, connecting plates, and reinforcing blocks, the water guides the rainwater from the roof to the sloping gutter, and works with the downspout to achieve gravity-fed drainage. The brackets are fixed to the connecting plates with expansion bolts to form a stable support structure, ensuring that the gutter maintains its sloping angle over a long period of time. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a PVC double-wall gutter drainage system provided in the embodiments of this application.

[0027] Figure 2 yes Figure 1 Enlarged view of section A.

[0028] Figure 3 yes Figure 1 Enlarged view of section B.

[0029] Figure 4 This is a partial cross-sectional structural diagram of a PVC double-wall gutter drainage system provided in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Downpipe; 11. Elbow; 111. Connecting pipe; 112. Second clamp; 113. First clamping block; 12. Outlet pipe; 121. Connecting groove; 122. First clamp; 123. Connecting rod; 1231. Slot; 13. Corrugated pipe; 14. Third clamp; 141. Second clamping block; 2. Water collection mechanism; 21. Gutter; 22. Water guide plate; 23. Downpipe; 24. Water baffle; 25. Hanger; 26. Connecting piece; 27. Reinforcing block; 3. Wall; 4. Roof; 5. Ground. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a PVC double-wall gutter system. (Refer to...) Figure 1 and Figure 2The system includes a water collection mechanism 2 and a downpipe 1 fixedly installed on the wall 3. The downpipe 1 is fixed to the wall 3 by several pipe clamps. The water collection mechanism 2 is located at the top of the downpipe 1 and is used to guide rainwater from the roof 4 into the downpipe 1. The water collection mechanism 2 includes a gutter 21, a water guide plate 22, a drain hopper 23, and a bracket 25. Several brackets 25 are provided, and each is fixed to the side of the eaves of the roof 4 by expansion bolts. The gutter 21 is hung on the bracket 25, thereby installing the gutter 21 on the side of the eaves of the roof 4. A connecting piece 26 is fixed to the edge of the gutter 21, and a reinforcing block 27 is fixed on the bracket 25. The connecting piece 26 is fixed to the reinforcing block 27 by bolts to further reinforce the connection between the bracket 25 and the gutter 21. Gutter 21 is made up of multiple PVC double-walled water tanks. Specifically, adjacent water tanks are interlocked by slots on both sides of the connector, and sealant is provided at the connection between the water tank and the connector to prevent water leakage.

[0033] Reference Figure 1 and Figure 2 The downspout 23 is fixed to the top of the downspout 1 and connected to it. The downspout 23 is located on the side of the eaves of the roof 4. One end of the gutter 21 is fixedly connected to the downspout 23. Specifically, a slot is provided on the side wall of the downspout 23 for the end of the gutter 21 to extend into. The gutter 21 is fixed in the slot with adhesive, and the gutter 21 extends at least 50 mm into the downspout 23. A baffle 24 is provided at the other end of the gutter 21. The gutter 21 is inclined downwards towards the downspout 23. Specifically, there is a 1 mm height difference for every meter the gutter 21 is close to the downspout 23. One end of the water guide 22 is fixed to the eaves of the roof 4 with expansion bolts, and the other end of the water guide 22 extends directly above the gutter 21 to guide rainwater from the roof 4 into the gutter 21.

[0034] Reference Figure 3 and Figure 4The bottom of the downpipe 1 is fixed and connected to an elbow pipe 11, with sufficient space for cleaning between the elbow pipe 11 and the ground 5. Specifically, the distance between the elbow pipe 11 and the ground 5 must be greater than 150 mm. An outlet pipe 12 is connected to the end of the elbow pipe 11 furthest from the downpipe 1. The outlet pipe 12 is inclined away from the wall 3 and gradually approaches the ground 5. The outlet pipe 12 can move away from the ground 5. A corrugated pipe 13 is provided between the elbow pipe 11 and the outlet pipe 12. One end of the corrugated pipe 13 is fixedly connected to the elbow pipe 11, and the other end is fixedly connected to the outlet pipe 12. Specifically, the corrugated pipe 13 is fitted and fixed to the ends of the elbow pipe 11 and the outlet pipe 12 by a clamp. The elbow pipe 11 has an integrally formed connecting pipe 111 at the end near the outlet pipe 12. The outlet pipe 12 has a connecting groove 121 at the end near the elbow pipe 11. The connecting pipe 111 is inserted into the connecting groove 121, and the outer wall of the connecting pipe 111 fits against the inner wall of the connecting groove 121. Specifically, the outer wall of the connecting pipe 111 is tapered, and the diameter of the connecting pipe 111 at the end away from the elbow pipe 11 is smaller than the diameter at the end near the elbow pipe 11. A rubber gasket is fixed on the outer wall of the connecting pipe 111 to improve the sealing between the connecting pipe 111 and the connecting groove 121.

[0035] To ensure stability when the outlet pipe 12 is connected to the elbow pipe 11, refer to Figure 3 and Figure 4 A first clamp 122 is fixedly installed on the outer wall of the outlet pipe 12. A set of connecting rods 123 are symmetrically and rotatably arranged on the first clamp 122, and a slot 1231 is opened on the connecting rod 123. Specifically, the slot 1231 is opened on the bottom wall of the connecting rod 123 along the arc direction with the rotation center of the connecting rod 123 as the center. A common connecting rod is fixed on the two connecting rods 123. The common connecting rod is curved in an arc shape so that the user can move the two connecting rods 123 at the same time through the common connecting rod. A second clamp 112 is fixedly installed on the outer wall of the elbow pipe 11. A set of first locking blocks 113 are symmetrically and fixedly arranged on the second clamp 112. The second locking blocks 141 are cylindrical blocks. The slots 1231 correspond one-to-one with the first locking blocks 113, and the slots 1231 fit on the first locking blocks 113.

[0036] To facilitate hanging up the water pipe 12 when cleaning the corner, refer to... Figure 1 and Figure 3 A third clamp 14 is fixedly installed on the drain pipe 1. A set of second clamps 141 are symmetrically and fixedly installed on the third clamp 14. The slots 1231 correspond one-to-one with the second clamps 141, and the slots 1231 can be fitted onto the second clamps 141.

[0037] The implementation principle of a PVC double-wall gutter 21 drainage system according to an embodiment of this application is as follows: When cleaning the corner area near the drain pipe 1, rotate the connecting rod 123 to disengage the slot 1231 from the first locking block 113. Then, manually pull the outlet pipe 12 to move it away from the elbow pipe 11. Next, lift the outlet pipe 12 and move it away from the ground 5. The flexible expansion and contraction of the corrugated pipe 13 compensates for the length change between the outlet pipe 12 and the elbow pipe 11, preventing any residual sewage from leaking out directly after the outlet pipe 12 and elbow pipe 11 separate. Then, insert the slot 1231 into the second locking block 141 of the third clamp 14, suspending the outlet pipe 12 in the lifted position to free up operating space. After cleaning, reset the outlet pipe 12, re-insert the connecting pipe 111 into the docking groove 121, and lock it with the slot 1231 through the first locking block 113 to restore the drainage function.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A PVC double-wall gutter downspout system, comprising a water collecting mechanism (2), a downspout (1) fixedly installed on a wall surface (3), the water collecting mechanism (2) being arranged at the top of the downspout (1) and used for guiding rainwater on a roof (4) into the downspout (1), characterized in that: The bottom of the downpipe (1) is fixed and communicated with an elbow pipe (11), which leaves a space for cleaning between the elbow pipe (11) and the ground (5), the elbow pipe (11) is communicated with a water outlet pipe (12) at the end away from the downpipe (1), the water outlet pipe (12) is inclined to the direction away from the wall surface (3), and the water outlet pipe (12) can be moved away from the ground (5).

2. A PVC double-wall gutter drop system according to claim 1, characterized in that: The elbow pipe (11) and the water outlet pipe (12) are provided with a bellows (13), one end of the bellows (13) is fixedly connected with the elbow pipe (11), and the other end of the bellows (13) is fixedly connected with the water outlet pipe (12).

3. The PVC double-wall gutter drop system of claim 1, wherein: The elbow pipe (11) is integrally formed with a butt joint pipe (111) at the end close to the water outlet pipe (12), the water outlet pipe (12) is provided with a butt joint groove (121) at the end close to the elbow pipe (11), the butt joint pipe (111) is inserted into the butt joint groove (121), and the outer wall of the butt joint pipe (111) is attached to the inner wall of the butt joint groove (121).

4. The PVC double-wall gutter drop system of claim 1, wherein: The outer wall of the water outlet pipe (12) is fixedly provided with a first clamp (122), a group of connecting rods (123) are symmetrically and rotatably arranged on the first clamp (122), a clamping groove (1231) is formed in the connecting rod (123), the outer wall of the elbow pipe (11) is fixedly provided with a second clamp (112), a group of first clamping blocks (113) are symmetrically and fixedly arranged on the second clamp (112), the clamping groove (1231) corresponds to the first clamping block (113) in one-to-one correspondence, and the clamping groove (1231) is sleeved on the first clamping block (113).

5. A PVC double-walled gutter downspout system according to claim 4, wherein: The outer wall of the water outlet pipe (12) is fixedly provided with a first clamp (122), a group of connecting rods (123) are symmetrically and rotatably arranged on the first clamp (122), a clamping groove (1231) is formed in the connecting rod (123), the outer wall of the elbow pipe (11) is fixedly provided with a second clamp (112), a group of first clamping blocks (113) are symmetrically and fixedly arranged on the second clamp (112), the clamping groove (1231) corresponds to the first clamping block (113) in one-to-one correspondence, and the clamping groove (1231) is sleeved on the first clamping block (113).

6. The PVC double-wall gutter drop system of claim 1, wherein: The outer wall of the water outlet pipe (12) is fixedly provided with a first clamp (122), a group of connecting rods (123) are symmetrically and rotatably arranged on the first clamp (122), a clamping groove (1231) is formed in the connecting rod (123), the outer wall of the elbow pipe (11) is fixedly provided with a second clamp (112), a group of first clamping blocks (113) are symmetrically and fixedly arranged on the second clamp (112), the clamping groove (1231) corresponds to the first clamping block (113) in one-to-one correspondence, and the clamping groove (1231) is sleeved on the first clamping block (113).

7. A PVC double-walled gutter downspout system according to claim 6, wherein: The outer wall of the water outlet pipe (12) is fixedly provided with a first clamp (122), a group of connecting rods (123) are symmetrically and rotatably arranged on the first clamp (122), a clamping groove (1231) is formed in the connecting rod (123), the outer wall of the elbow pipe (11) is fixedly provided with a second clamp (112), a group of first clamping blocks (113) are symmetrically and fixedly arranged on the second clamp (112), the clamping groove (1231) corresponds to the first clamping block (113) in one-to-one correspondence, and the clamping groove (1231) is sleeved on the first clamping block (113).

8. A PVC double-walled gutter downspout system according to claim 7, characterized in that: The outer wall of the water outlet pipe (12) is fixedly provided with a first clamp (122), a group of connecting rods (123) are symmetrically and rotatably arranged on the first clamp (122), a clamping groove (1231) is formed in the connecting rod (123), the outer wall of the elbow pipe (11) is fixedly provided with a second clamp (112), a group of first clamping blocks (113) are symmetrically and fixedly arranged on the second clamp (112), the clamping groove (1231) corresponds to the first clamping block (113) in one-to-one correspondence, and the clamping groove (1231) is sleeved on the first clamping block (113). The outer wall of the water outlet pipe (12) is fixedly provided with a first clamp (122), a group of connecting rods (123) are symmetrically and rotatably arranged on the first clamp (122), a clamping groove (1231) is formed in the connecting rod (123), the outer wall of the elbow pipe (11) is fixedly provided with a second clamp (112), a group of first clamping blocks (113) are symmetrically and fixedly arranged on the second clamp (112), the clamping groove (1231) corresponds to the first clamping block (113) in one-to-one correspondence, and the clamping groove (1231) is sleeved on the first clamping block (113).