Rainwater drainage system for building

Abstract

The utility model discloses a rainwater drainage system for a building. The rainwater drainage system comprises a rainwater hopper, a rainwater pipe and a water dustpan, the rainwater hopper is fixed on the roof and communicated with the upper end of the rainwater pipe; the rainwater pipe is longitudinally arranged along the wall body and is fixed with the wall body through a plurality of groups of pipe clamping pieces with different heights and expansion screws; the bottom end of the rainwater pipe is directly or indirectly connected with a water outlet elbow, and the water dustpan is bonded or screwed on the ground; the water outlet elbow is fixed with a flange plate and is in threaded connection with the water dustpan through the flange plate; and the water dustpan is provided with a height adjusting device for adjusting the height of the water outlet elbow. The building rainwater drainage system can ensure that the water outlet elbow is stably supported, and the height of the water outlet elbow can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building water supply and drainage system construction, in particular to a building rainwater drainage system. BACKGROUND

[0002] The building rainwater drainage system generally comprises a rainwater bucket, a rainwater pipe and a water sieve; the rainwater bucket is fixed on a roof bearing structure and is sealed with the roof edge; the rainwater pipe is longitudinally arranged along the outer wall, and a pipe clamp is sleeved on the rainwater pipe every certain height; each pipe clamp is fixed to the outer wall through an expansion screw; a water outlet elbow is arranged at the bottom end of the rainwater pipe; to avoid the impact of drainage on the ground, the water sieve is bonded or fixed to the ground through a ground anchor bolt; rainwater is guided by the water sieve and finally flows into the drainage ditch inlet.

[0003] Under normal circumstances, the drainage ditch inlet is close to the lower end of the rainwater pipe, and a basic drainage system is adopted, that is, the water sieve is arranged below the rainwater pipe, and a forty-five-degree front-bent water outlet elbow is directly connected to the lower end of the rainwater pipe. However, in some cases, the drainage ditch inlet is far away from the lower end of the rainwater pipe, such as when the rainwater pipe is a hidden pipe fixed to the inner side of the wall and the drainage ditch inlet is located on the outer side of the wall, or when the rainwater pipe is located on the outer side of the wall but the ground drainage ditch inlet is still a certain distance away from the corner of the wall and the rainwater pipe. In this case, an L-shaped drainage system is required, that is, a ninety-degree transition elbow is arranged at the lower end of the rainwater pipe, a transition horizontal pipe is connected through the transition elbow, and a forty-five-degree downward-bent water outlet elbow is connected to the end of the transition horizontal pipe, and the water sieve is arranged below the downward-bent water outlet elbow.

[0004] However, the above-mentioned existing drainage systems have the following defects: the water outlet elbow and the water sieve are separated from each other and do not contact. This will result in less compact assembly, and the elbow and the water sieve will occupy more space; more importantly, the end of the pipe and the water outlet elbow lack support and have no fulcrum, and when water is sprayed out of the pipe outlet, a continuous reaction force will be generated on the pipe outlet, causing the pipe outlet to vibrate and shake, and this vibration will be transmitted upward along the lower end of the rainwater pipe, which will accumulate over time and may cause the rainwater pipe to loosen or even fall off the wall and the pipe clamp; moreover, the water falling along the rainwater pipe will generate a water hammer effect on the elbow at the lower end, intensifying the vibration at the lower end of the rainwater pipe and even causing the elbow and the rainwater pipe to separate. However, the existing technology cannot fix the water outlet elbow and the water sieve, because there will inevitably be errors in the height direction of the rainwater pipe during actual construction, and once the water outlet elbow and the water sieve are fixed, the height error of the rainwater pipe cannot be compensated, resulting in the failure of the lower elbow to connect to the rainwater pipe. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a building rainwater drainage system that can ensure stable support of the water outlet elbow and adjust the height of the water outlet elbow.

[0006] The technical solution of the utility model discloses a building rainwater drainage system, it includes rainwater bucket, rainwater pipe and water sieve; Rainwater bucket is fixed in roof and is communicated with rainwater pipe upper end; Rainwater pipe is along wall body longitudinal arrangement, and rainwater pipe is fixed with wall body through multiple groups of different height pipe clamp and expansion screw; Rainwater pipe bottom end is directly or indirectly connected with water outlet elbow, and water sieve is bonded or screwed on the ground; Water outlet elbow is fixed with flange, and water outlet elbow is screwed with water sieve through flange; Water sieve is equipped with height adjusting device for adjusting the height of water outlet elbow.

[0007] Compared with the prior art, the building rainwater drainage system has the following advantages.

[0008] The water outlet elbow of the system is firmly screwed with the water sieve through the flange, making the assembly compact and occupying less space. More importantly, it ensures that the pipeline outlet and the water outlet elbow are sufficiently supported, thereby continuously and effectively resisting the reaction force of the water flow on the pipeline outlet, eliminating the oscillation and shaking of the pipeline outlet, and avoiding the loosening of the rainwater pipe and the wall surface and the clamp. Moreover, the elbow water pipe is continuously supported, effectively reducing the influence of water hammer effect, and avoiding the disconnection of the water outlet elbow and the rainwater pipe. Furthermore, since the water sieve is provided with a height adjusting device, the height of the water outlet elbow can be effectively adjusted to ensure that the rainwater pipe and the lower elbow can be effectively connected and docked, effectively compensating for the height error of the rainwater pipe, and ensuring the assembly.

[0009] For the preferred basic drainage system, the bottom end of the rainwater pipe is directly fixed with a forty-five-degree front-bent water outlet elbow, and the front-bent water outlet elbow is fixed with a horizontal flange. A cover plate is additionally provided on the water sieve, the front-bent water outlet elbow passes through the through hole of the cover plate, and the horizontal flange and the cover plate are screwed through vertical bolts. A plurality of height adjusting washers are arranged between the cover plate and the horizontal flange. First, the integral cover plate is additionally provided on the water sieve to prevent the water flow from the outlet elbow from splashing. More importantly, it provides a position for screwing and fixing the water outlet elbow. By passing the water outlet elbow through the through hole of the cover plate and screwing the horizontal flange and the cover plate through vertical bolts, the water outlet elbow and the water sieve can be firmly connected, thereby providing continuous and stable support for the lower end of the pipeline. Moreover, the operation of adjusting the height of the water outlet elbow is also flexible and convenient. By increasing or decreasing the number of washers according to the height of the bottom end of the rainwater pipe, the water outlet elbow can be firmly assembled at the required height, ensuring that the water outlet elbow is sealed and firmly docked with the lower end of the rainwater pipe.

[0010] As a further improvement, the through hole of the cover plate is waist-shaped, and the two sides of the cover plate through hole are provided with transverse screwing long holes for vertical bolts to pass through. The transverse screwing long holes and the through hole both extend along the front and back. In this way, the positions of the water sieve, the rainwater pipe and the water outlet elbow can be adjusted along the front and back, allowing the water sieve to have a certain front and back assembly allowance, further facilitating the assembly process.

[0011] The preferred L-shaped drainage system is that the bottom end of the rainwater pipe is indirectly connected with the forty-five degree downward water outlet elbow through the transition elbow and the transition horizontal pipe; the downward water outlet elbow is fixed with a vertical flange plate; the back plate of the water sieve is provided with a central vertical mounting slot and a vertical screwing long hole; the downward water outlet elbow passes through the vertical mounting slot of the back plate and the vertical flange plate and the back plate are screwed by a horizontal bolt which passes through the vertical screwing long hole; firstly, the structure can ensure that the downward water outlet elbow is firmly connected with the water sieve and continuously and favorably supports the end section of the pipe; moreover, the assembly process is convenient to operate, only the downward water outlet elbow passes through the vertical mounting slot of the back plate of the water sieve and the horizontal bolt passes through the vertical screwing long hole and is firmly screwed; furthermore, before the horizontal bolt is tightened, the downward water outlet elbow and the horizontal bolt can slide up and down along the vertical mounting slot and the vertical screwing long hole, so that the assembly height of the downward water outlet elbow, the transition horizontal pipe and the transition elbow is adjusted, the rainwater pipe and the pipes, elbows and the like at the lower end thereof are tightly connected and sealed, and the height assembly error of the rainwater pipe of dozens of meters is effectively compensated.

[0012] As a further preferred L-shaped drainage system, the front part of the top surface of the water sieve is provided with a front half flat baffle, the upper part of the front surface of the water sieve is provided with an upper half arc-shaped baffle, and the front end of the front half flat baffle is fixed with the upper end of the upper half arc-shaped baffle; in this way, the water flow out of the water outlet elbow can be blocked and splashed; the arc-shaped baffle blocks the upper half but is hollowed out for the lower half, facilitating drainage; the flat baffle blocks the front half but is hollowed out for the rear half, facilitating the assembly of the downward water outlet elbow and the back plate of the water sieve. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the embodiment 1 of the building rainwater drainage system of the utility model.

[0014] Figure 2 is Figure 1 an exploded structural schematic view.

[0015] Figure 3 is a structural schematic view of the embodiment 2 of the building rainwater drainage system of the utility model.

[0016] Figure 4 is Figure 3 a structural schematic view after the front half flat baffle and the upper half arc-shaped baffle are removed.

[0017] Figure 5 is Figure 4 a further exploded structural schematic view.

[0018] 1, rainwater pipe, 2, water sieve, 3, front bending water outlet elbow, 4, horizontal flange, 5, cover plate, 6, vertical bolt, 7, through hole, 8, transverse screw long hole, 9, gasket, 10, transition elbow, 11, transition cross pipe, 12, lower bending water outlet elbow, 13, vertical flange, 14, vertical installation groove, 15, vertical screw long hole, 16, transverse bolt, 17, front half flat baffle, 18, upper half arc baffle. DETAILED DESCRIPTION

[0019] The utility model will be further explained in connection with the drawings and specific embodiments.

[0020] As Figures 1-2 shown, the embodiment 1 of the utility model building rainwater drainage system, namely the basic type drainage system, it includes the rainwater bucket, rainwater pipe 1 and water sieve 2. Rainwater bucket is fixed on roof bearing structure, and is sealed with roof edge, and rainwater bucket is communicated with the upper end of rainwater pipe 1;Rainwater pipe 1 is arranged along the longitudinal direction of wall body and rainwater pipe 1 is sleeved with a pipe clamp every certain height, and each pipe clamp is fixed with wall body through expansion screw;Rainwater pipe 1 bottom end is provided with water outlet elbow, and water sieve 2 is bonded or screwed with ground anchor bolt on ground and is used for receiving the drainage of water outlet elbow;Water is guided after water sieve 2, and finally flows into drainage ditch entrance.

[0021] Water outlet elbow is fixed with flange, and water outlet elbow is screwed with water sieve 2 through flange. In this embodiment, rainwater pipe 1 bottom end is directly fixed with forty-five degree front bending water outlet elbow 3, and front bending water outlet elbow 3 is fixed with horizontal flange 4;Water sieve 2 is additionally provided with a cover plate 5, and front bending water outlet elbow 3 passes through the through hole 7 of cover plate 5 and horizontal flange 4 is screwed with cover plate 5 through vertical bolt 6. More specifically, the through hole 7 of cover plate 5 is waist-shaped, and the both sides of the through hole 7 of cover plate 5 are provided with transverse screw long holes 8 for vertical bolt 6 to pass through, and the transverse screw long holes 8 and the waist-shaped through hole 7 all extend along the front and back directions;Vertical bolt 6 passes through the flange hole of horizontal flange 4 and the transverse screw long hole 8 of cover plate 5 from top to bottom and is locked by a nut.

[0022] Water sieve 2 is provided with height adjusting device for adjusting the height of water outlet elbow, namely multiple height adjusting gaskets 9 are arranged between cover plate 5 and horizontal flange 4.

[0023] As Figures 3-5 shown, the embodiment 2 of the utility model building rainwater drainage system, namely L type drainage system, the system also includes rainwater bucket, rainwater pipe 1, and the difference lies in that the bottom end of rainwater pipe 1 is not directly connected with water outlet elbow, and the bottom end of rainwater pipe 1 is indirectly connected with forty-five degree lower bending water outlet elbow 12 through transition elbow 10 and transition cross pipe 11. The purpose is to move the water outlet point of rainwater pipe 1 horizontally, so that the water outlet elbow is close to the entrance of drainage ditch.

[0024] The lower-bent water outlet elbow 12 is fixed with a vertical flange plate 13; the back plate of the water sieve 2 is provided with a central vertical mounting slot 14 and a vertical screwing long hole 15; the lower-bent water outlet elbow 12 passes through the vertical mounting slot 14 of the back plate and the vertical flange plate 13 and the back plate are screwed by a horizontal screw bolt 16, the horizontal screw bolt 16 passes through the flange hole of the vertical flange plate 13 and the vertical screwing long hole 15 of the back plate from back to front and is locked by a nut. The vertical mounting slot 14 and the vertical screwing long hole 15 constitute the height adjusting device of the water sieve 2, which is used to adjust the height of the transition elbow 10, the transition horizontal pipe 11 and the lower-bent water outlet elbow 12.

[0025] The front half flat baffle 17 is arranged on the front top surface of the water sieve 2 and the upper half arc baffle 18 is arranged on the upper front surface of the water sieve 2, and the front end of the front half flat baffle 17 is fixed with the upper end of the upper half arc baffle 18.

[0026] Of course, after the lower-bent water outlet elbow 12 and the back plate of the water sieve 2 are fixed, a cushion block can be additionally arranged at the middle section of the transition horizontal pipe 11 and below the transition elbow 10 to strengthen the support.

Claims

1. A building rainwater drainage system, comprising a rainwater hopper, a rainwater pipe, and a water hopper; the rainwater hopper is fixed to the roof and connected to the upper end of the rainwater pipe; the rainwater pipe is laid longitudinally along the wall, and is fixed to the wall by multiple sets of pipe clamps and expansion bolts of different heights; the bottom end of the rainwater pipe is directly or indirectly connected to a drain elbow, and the water hopper is bonded or screwed to the ground; characterized in that: The water outlet elbow is fixed with a flange plate, and the water outlet elbow is screwed with the water scoop through the flange plate.

2. The building rainwater drainage system of claim 1, wherein: The drainage system is of a base type, and the bottom end of the rainwater pipe is directly fixed with a forty-five-degree front-bent water outlet elbow, and the front-bent water outlet elbow is fixed with a horizontal flange plate; a cover plate is additionally arranged on the water scoop, the front-bent water outlet elbow passes through the through hole of the cover plate, and the horizontal flange plate is screwed with the cover plate through vertical bolts; a plurality of height-adjusting shims are arranged between the cover plate and the horizontal flange plate.

3. The building rainwater drainage system of claim 2, wherein: The through hole of the cover plate is in a waist shape, and the cover plate is provided with transverse screwing long holes on both sides of the through hole for the vertical bolts to pass through, and the transverse screwing long holes and the through hole all extend along the front-rear direction.

4. The building rainwater drainage system of claim 1, wherein: The drainage system is of an L type, and the bottom end of the rainwater pipe is indirectly connected with a forty-five-degree downward-bent water outlet elbow through a transition elbow and a transition cross pipe; the downward-bent water outlet elbow is fixed with a vertical flange plate; the back plate of the water scoop is provided with a central vertical mounting groove and a vertical screwing long hole; the downward-bent water outlet elbow passes through the vertical mounting groove of the back plate, and the vertical flange plate and the back plate are screwed through transverse bolts, and the transverse bolts pass through the vertical screwing long hole.

5. The building rainwater drainage system of claim 4, wherein: The front half of the top surface of the water scoop is provided with a front half flat baffle, and the upper part of the front of the water scoop is provided with an upper half arc-shaped baffle, and the front end of the front half flat baffle is fixed with the upper end of the upper half arc-shaped baffle.

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