A siphonic rainwater head for roof drainage

Abstract

The utility model relates to rainwater bucket technical field discloses a siphon rainwater bucket for roof drainage, including rainwater bucket body, connecting pipe and drain pipe, rainwater bucket body bottom is fixedly connected with the upper end of connecting pipe, and the lower extreme of connecting pipe is connected with the upper extreme of drain pipe, the siphon rainwater bucket for roof drainage is through the thread connection of thread groove one and thread groove two, realizes the quick disassembly of connecting pipe and drain pipe, can complete installation or maintenance without professional tool, improves construction efficiency greatly, the expansion ring in annular clamping slot is closely combined drain pipe wall, forms elastic seal, effectively prevents the leakage of connecting place, compares traditional sealing ring, and rubber expansion ring has elastic deformation capacity and reset performance, can adapt to the displacement caused by slight vibration or thermal expansion and contraction, improves sealing reliability, and the wear -resisting layer covers the outer wall of expansion ring, avoids the friction loss when thread connection, prolongs the service life of sealing part, reduces the leakage hidden danger due to abrasion.

Description

Technical Field

[0001] This utility model relates to the field of rainwater hopper technology, specifically a siphon rainwater hopper for roof drainage. Background Technology

[0002] Traditional rainwater hoppers are widely used in roof drainage systems, but their connection methods (such as welding and flange connections) have significant drawbacks: welding or flange connections require specialized tools and advanced construction skills, making the installation process cumbersome. When components need repair or replacement, the entire structure often needs to be disassembled, consuming a lot of time and labor costs. Traditional connection methods rely on rigid sealing structures, which are difficult to adapt to changes in ambient temperature or displacement caused by slight vibrations, easily leading to water leakage at the connection points, resulting in a decrease in the roof's waterproofing performance and even structural damage. Therefore, we propose a siphon rainwater hopper for roof drainage to solve the above problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a siphon rainwater hopper for roof drainage, which solves the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a siphon rainwater hopper for roof drainage, including a rainwater hopper body, a connecting pipe and a drain pipe;

[0005] The bottom of the rainwater hopper is fixedly connected to the upper end of the connecting pipe, and the lower end of the connecting pipe is connected to the upper end of the drainage pipe;

[0006] The drain pipe has a threaded groove 1 on the outer side wall at the top, the connecting pipe has an annular groove at the bottom, and the connecting pipe has a threaded groove 2 on the inner side wall of the annular groove that matches the threaded groove 1. The connecting pipe and the drain pipe are connected by threads through the threaded groove 1 and the threaded groove 2.

[0007] The connecting pipe has an inclined hole in its wall, and the inclined hole communicates with the rainwater hopper and the interior of the annular groove.

[0008] The connecting pipe has an annular groove on the inner side wall of the annular groove, and an expansion ring is fixedly installed in the annular groove. A wear-resistant layer is fixedly connected to the outer wall of the expansion ring.

[0009] Furthermore, the expansion ring is made of rubber, and the outer wall of the expansion ring is in contact with the wall of the drain pipe.

[0010] Furthermore, the wear-resistant layer is a ceramic coating or a metal plating.

[0011] Furthermore, there are multiple inclined holes, which are evenly distributed along the circumference of the connecting pipe, and the axis of the inclined hole forms an angle of 30°-60° with the axis of the connecting pipe.

[0012] Furthermore, the rainwater hopper is shaped like an inverted frustum, with the diameter of its upper opening being larger than that of its lower opening. The connecting pipe is a straight pipe structure, and the drain pipe is a vertically extending cylindrical structure.

[0013] Furthermore, there are multiple annular slots, and the multiple annular slots are arranged at equal intervals along the axial direction of the connecting pipe.

[0014] The beneficial effects of this utility model are:

[0015] 1. This siphon rainwater hopper for roof drainage uses threaded connections between threaded groove one and threaded groove two to achieve quick assembly and disassembly of the connecting pipe and the drainage pipe. Installation or maintenance can be completed without professional tools, greatly improving construction efficiency. The expansion ring inside the annular groove tightly fits the drainage pipe wall to form an elastic seal, effectively preventing water leakage at the connection. Compared with traditional sealing rings, the rubber expansion ring has both elastic deformation capability and reset performance, which can adapt to displacement caused by slight vibration or thermal expansion and contraction, improving sealing reliability. The wear-resistant layer covers the outer wall of the expansion ring to avoid frictional wear during threaded connections, extend the service life of sealing components, and reduce the risk of water leakage caused by wear.

[0016] 2. This siphon rainwater hopper for roof drainage has multiple circumferentially evenly distributed inclined holes (with the axis of the hole forming an angle of 30°-60° with the axis of the connecting pipe) on the pipe wall. These holes guide rainwater into the annular groove at a specific angle, accelerating air discharge, promoting the formation of the siphon effect, and improving drainage efficiency. Multiple annular grooves are arranged at equal intervals along the axis of the connecting pipe, allowing for the installation of multiple expansion rings to form a multi-level sealing structure, further enhancing sealing performance and adapting to drainage needs under high water pressure or complex environments. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 4 This is a cross-sectional view of the connecting pipe structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the drainage pipe structure of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Rainwater hopper body; 2. Connecting pipe; 3. Drain pipe; 4. Threaded groove one; 5. Annular groove; 6. Threaded groove two; 7. Inclined hole; 8. Annular groove; 9. Expansion ring; 10. Wear-resistant layer. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please see Figures 1-5 A siphon rainwater hopper for roof drainage includes a rainwater hopper body 1, a connecting pipe 2, and a drain pipe 3;

[0026] The bottom of the rainwater hopper 1 is fixedly connected to the upper end of the connecting pipe 2, and the lower end of the connecting pipe 2 is connected to the upper end of the drain pipe 3.

[0027] The drain pipe 3 has a threaded groove 4 on the outer side wall at the top, and the connecting pipe 2 has an annular groove 5 at the bottom. The connecting pipe 2 has a threaded groove 6 on the inner side wall of the annular groove 5 that is compatible with the threaded groove 4. The connecting pipe 2 and the drain pipe 3 are connected by threads through the threaded groove 4 and the threaded groove 6.

[0028] The pipe wall of the connecting pipe 2 is provided with an inclined hole 7, which is connected to the inside of the rainwater hopper 1 and the annular groove 5.

[0029] The connecting pipe 2 has an annular groove 8 on the inner side wall of the annular groove 5. An expansion ring 9 is fixedly installed in the annular groove 8, and a wear-resistant layer 10 is fixedly connected to the outer wall of the expansion ring 9.

[0030] In this embodiment, the threaded connection between the first threaded groove 4 and the second threaded groove 6 enables quick assembly and disassembly of the connecting pipe 2 and the drain pipe 3. Installation or maintenance can be completed without professional tools, greatly improving construction efficiency. The expansion ring 9 in the annular groove 8 tightly fits the wall of the drain pipe 3 to form an elastic seal, effectively preventing water leakage at the connection. Compared with traditional sealing rings, the rubber expansion ring 9 has both elastic deformation capability and reset performance, which can adapt to displacement caused by slight vibration or thermal expansion and contraction, improving sealing reliability. The wear-resistant layer 10 covers the outer wall of the expansion ring 9 to avoid frictional wear during threaded connection, extend the service life of the sealing components, and reduce the risk of water leakage caused by wear.

[0031] Reference Figure 3 As shown, the expansion ring 9 is made of rubber, and the outer wall of the expansion ring 9 is in contact with the wall of the drain pipe 3.

[0032] Reference Figure 4 As shown, the wear-resistant layer 10 is a ceramic coating or a metal plating.

[0033] Reference Figure 3 , Figure 4As shown, there are multiple inclined holes 7, which are evenly distributed around the circumference of the connecting pipe 2, and the axis of the inclined holes 7 forms an angle of 30°-60° with the axis of the connecting pipe 2.

[0034] In this embodiment, multiple circumferentially evenly distributed inclined holes 7 (with the axis of the hole forming an angle of 30°-60° with the axis of the connecting pipe 2) are opened in the wall of the connecting pipe 2. This allows rainwater to enter the annular groove 5 at a specific angle, accelerating air discharge, promoting the formation of a siphon effect, and improving drainage efficiency. Multiple annular grooves 8 are arranged at equal intervals along the axial direction of the connecting pipe 2, which can be used to install multiple layers of expansion rings 9 to form a multi-level sealing structure, further enhancing the sealing performance and adapting to the drainage needs of high water pressure or complex environments.

[0035] Reference Figure 1 , Figure 2 As shown, the rainwater hopper 1 is in the shape of an inverted frustum, with the diameter of its upper opening being larger than that of its lower opening. The connecting pipe 2 is a straight pipe structure, and the drain pipe 3 is a vertically extending cylindrical structure.

[0036] Reference Figure 3 , Figure 4 As shown, there are multiple annular slots 8, which are arranged at equal intervals along the axial direction of the connecting pipe 2.

[0037] During use, rainwater flows into the connecting pipe 2 from the bottom of the rainwater hopper 1. At this time, the inclined holes 7 (multiple holes, evenly distributed circumferentially, with their axes at an angle of 30°-60° to the axis of the connecting pipe 2) inside the connecting pipe 2 begin to function: the inclined holes 7 guide the rainwater at a specific angle, such as tangentially, into the annular groove 5 at the bottom of the connecting pipe 2, causing the water flow to rotate or accelerate, forming a "vortex" effect. This helps to separate air from the water. When the water flows through the inclined holes 7 into the annular groove 5, the air, due to its lower density, is compressed upwards by the water flow. The water is discharged through the inclined hole 7 and the rainwater hopper 1, or discharged with the water flow into the drain pipe 3. The annular groove 5 forms an annular space around the top of the drain pipe 3. The rotating flow of water here further separates the air, gradually creating a negative pressure environment inside the drain pipe 3. When the negative pressure reaches a certain level, a siphon effect is formed, and the water flow velocity inside the drain pipe 3 is significantly increased. The atmospheric pressure difference is used to drive the rainwater to be discharged quickly, and the drainage efficiency is far superior to traditional gravity drainage. The connecting pipe 2 and the drain pipe 3 are connected by a threaded groove 4 (outside the drain pipe 3) and a screw thread. Tighten and secure the groove 6 (inner side of connecting pipe 2) to ensure structural stability; install a rubber expansion ring 9 in the annular groove 8 inside the annular groove 5 of connecting pipe 2, with its outer wall covered by a wear-resistant layer 10 (ceramic coating or metal plating). When the thread is tightened, the expansion ring 9 is compressed and pressed tightly against the wall of the drain pipe 3, forming an elastic seal. The elastic deformation capacity of the rubber can adapt to displacement caused by slight vibration or thermal expansion and contraction, preventing air leakage at the connection and maintaining the negative pressure required for siphoning. The wear-resistant layer 10 reduces frictional wear during thread rotation and extends the life of the sealing components. To prevent wear and tear from reducing the sealing performance; if there are multiple annular grooves 8 (arranged at equal intervals along the axial direction), multiple expansion rings 9 can be installed to form a multi-level seal, further improving the stability of the negative pressure environment, especially suitable for high water pressure or complex environments; the straight pipe connecting pipe 2 and the vertical cylindrical drain pipe 3 form a straight water flow path, reducing the resistance of bends and ensuring that the water flow continues to be discharged stably after the siphon is formed. The high-speed water flow generated by the siphon effect can drive the residual air in the pipe to be discharged further, forming a virtuous cycle and maintaining a high-efficiency drainage state.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A siphonic rainwater hopper for roof drainage, characterized in that, It includes a rainwater hopper (1), a connecting pipe (2), and a drain pipe (3); The bottom of the rainwater hopper (1) is fixedly connected to the upper end of the connecting pipe (2), and the lower end of the connecting pipe (2) is connected to the upper end of the drain pipe (3); The drain pipe (3) has a threaded groove 1 (4) on the outer side wall at the top, and the connecting pipe (2) has an annular groove (5) at the bottom. The connecting pipe (2) has a threaded groove 2 (6) on the inner side wall of the annular groove (5) that is compatible with the threaded groove 1 (4). The connecting pipe (2) and the drain pipe (3) are connected by threads through the threaded groove 1 (4) and the threaded groove 2 (6). The connecting pipe (2) has an inclined hole (7) in its wall, and the inclined hole (7) is connected to the inside of the rainwater bucket (1) and the annular groove (5). The connecting pipe (2) has an annular groove (8) on the inner side wall of the annular groove (5). An expansion ring (9) is fixedly installed in the annular groove (8), and a wear-resistant layer (10) is fixedly connected to the outer wall of the expansion ring (9).

2. A siphonic rainwater hopper for roof drainage according to claim 1, characterized in that: The expansion ring (9) is made of rubber, and the outer wall of the expansion ring (9) is in contact with the wall of the drain pipe (3).

3. A siphon rainwater hopper for roof drainage according to claim 2, characterized in that: The wear-resistant layer (10) is a ceramic coating or a metal plating.

4. A siphon rainwater hopper for roof drainage according to claim 3, characterized in that: There are multiple inclined holes (7), which are evenly distributed around the circumference of the connecting pipe (2), and the axis of the inclined hole (7) forms an angle of 30°-60° with the axis of the connecting pipe (2).

5. A siphon rainwater hopper for roof drainage according to claim 4, characterized in that: The rainwater hopper (1) is in the shape of an inverted frustum, with the diameter of its upper opening being larger than that of its lower opening. The connecting pipe (2) is a straight pipe structure, and the drain pipe (3) is a vertically extending cylindrical structure.

6. A siphon rainwater hopper for roof drainage according to claim 1, characterized in that: There are multiple annular slots (8), and the multiple annular slots (8) are arranged at equal intervals along the axial direction of the connecting pipe (2).

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