A siphon rainwater head for building drainage

Abstract

The present application belongs to the technical field of drainage, and particularly relates to a siphon rainwater head for building drainage, which comprises a mounting plate, a grid assembly coaxially and fixedly connected to the top of the mounting plate, a drainage pipeline coaxially and fixedly connected to the bottom of the mounting plate, and the drainage pipeline being communicated with the grid assembly; an active baffle is vertically and slidingly connected in the grid assembly, the active baffle is limitingly matched with a limiting portion, and the limiting portion is fixedly connected to the middle portion of the inner side of the grid assembly; a float ball is arranged in the drainage pipeline and is drivingly connected with the active baffle. The initial position of the active baffle is relatively low, and the siphon effect can be conveniently formed when there is a small amount of accumulated water. The active baffle can be lifted along with the water level, the effective water inlet area is increased while the siphon effect is maintained, and when the water amount gradually decreases, the active baffle will also be lowered along with the water level while maintaining the siphon state, thereby prolonging the siphon effect until the rainwater is completely drained.

Description

Technical Field

[0001] This invention belongs to the field of drainage technology, and in particular relates to a siphon rainwater hopper for building drainage. Background Technology

[0002] Currently, there are two main types of rainwater hoppers used in buildings: gravity-type rainwater hoppers, which are traditional and rely on the gravity of rainwater for drainage; and roof siphon-type rainwater hoppers, a newer type used in conjunction with siphon drainage systems. When rainfall is light, they drain like gravity-type hoppers; however, when rainwater accumulates to a certain level, they utilize the siphon effect to continuously draw in more rainwater, accelerating drainage. Driven by these new roof rainwater drainage systems, traditional gravity-type rainwater hoppers are gradually being replaced, and more and more new buildings are adopting roof siphon-type rainwater drainage systems.

[0003] However, with the use of roof siphon rainwater drainage systems, more and more problems have emerged: due to the instability of rainfall, especially in the early stage of increased water volume, the siphon rainwater hopper cannot form a siphon in time, causing the problem of early rainwater accumulation and affecting the drainage effect. Therefore, there is an urgent need for a siphon rainwater hopper for building drainage to solve this problem. Summary of the Invention

[0004] The purpose of this invention is to provide a siphon rainwater hopper for building drainage to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] A siphon rainwater hopper for building drainage includes: a mounting plate, a grid assembly coaxially fixed to the top of the mounting plate, and a drainage pipe coaxially fixed to the bottom of the mounting plate, the drainage pipe being connected to the grid assembly;

[0007] A movable partition is vertically slidably connected inside the grille assembly. The movable partition is limited by a limiting part, which is fixedly connected to the middle of the inner side of the grille assembly.

[0008] The drainage pipe is equipped with a float ball, which is connected to the movable partition.

[0009] Preferably, the grille assembly includes a top plate, which is coaxially arranged with the mounting plate. A plurality of guide vanes are fixedly connected between the top plate and the mounting plate. The plurality of guide vanes are arranged at equal intervals in the circumferential direction, and a gap is provided between two adjacent guide vanes.

[0010] The bottom of the guide vane is fixedly connected to the top of the mounting plate;

[0011] The limiting part is disposed in the middle of the plurality of guide vanes.

[0012] Preferably, the limiting part includes a plurality of limiting blocks, each of the limiting blocks corresponding to a plurality of the guide vanes. The limiting blocks are fixed in the middle of the corresponding guide vanes, and the movable partition is vertically limited in cooperation with the plurality of limiting blocks.

[0013] Preferably, the top of the limiting block is rotatably connected with a ball bearing.

[0014] Preferably, the bottom end of the second connecting rod is fixedly connected to the top axis of the float, and a mounting bracket is coaxially sleeved on the outside of the second connecting rod. The second connecting rod passes through the center of the mounting bracket, and the top end of the second connecting rod is fixedly connected to the bottom axis of the movable partition.

[0015] Preferably, a liquid-blocking plate is coaxially fixed inside the drainage pipe. The liquid-blocking plate is located below the float. A liquid outlet hole is opened in the center of the liquid-blocking plate. A conical plug for sealing is provided inside the liquid outlet hole. A gap is left between the outer wall of the conical plug and the inner wall of the liquid outlet hole. The bottom end of a third connecting rod is axially fixed to the top of the conical plug. The top end of the third connecting rod is fixed to the bottom of the float.

[0016] Preferably, a check valve is coaxially fixed to the bottom of the drainage pipe, the inlet end of the check valve is connected to the outlet end of the drainage pipe, and a plurality of Tesla valve channels are equally spaced in the inner circumference of the check valve, the inlet end of the Tesla valve channel is connected to the outlet end of the drainage pipe, and the liquid acceleration direction of the Tesla valve channel is downward.

[0017] Preferably, a centrifugal impeller is coaxially sleeved on the outside of the third connecting rod, the centrifugal impeller is located below the float, the fixed end of the second bearing is fixedly connected to the center of the mounting bracket, the rotating end of the second bearing is radially limited to the second connecting rod, and the rotating end of the second bearing is axially slidably connected to the second connecting rod.

[0018] Preferably, the bottom end of a telescopic rod is fixedly connected to the top axis of the movable partition, the top end of the telescopic rod is rotatably connected to the top plate through a first bearing, the top end of the telescopic rod passes through the top plate and is fixedly connected to one end of a plurality of first connecting rods, the other end of the first connecting rod is fixedly connected to a vertically arranged scraper, the plurality of scrapers contact the outer side wall on which the filter screen is provided, and the filter screen is coaxially fixedly connected to the outside of the plurality of guide vanes.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] In use, when drainage is not required, the movable baffle is positioned above the limiting part under the action of the limiting part. A gap is left between the movable baffle and the water inlet of the drainage pipe for rainwater to pass through. When the amount of rainwater is small, the rainwater enters from both sides of the grid assembly and then enters the drainage pipe through the gap between the movable baffle and the water inlet of the drainage pipe to achieve gravity drainage. When the amount of rainwater is large, as the amount of rainwater increases, the drainage capacity of the drainage pipe is insufficient, causing the rainwater level to gradually submerge the movable baffle. At this time, the air inside the drainage pipe is expelled, and the drainage pipe is filled with rainwater, forming a siphon drainage, which improves the drainage capacity. During the process of the rainwater filling the drainage pipe, the float rises under the action of buoyancy, which drives the movable baffle to move upward within the grid assembly, increasing the distance between the movable baffle and the water inlet of the drainage pipe. In fact, under the condition of ensuring siphon drainage, the effective area of ​​water inlet is increased, thereby improving the drainage efficiency per unit time. The movable baffle of this device is initially positioned low, which facilitates the formation of a siphon effect even when there is a small amount of water accumulation. As the water level rises, the movable baffle increases the effective water inlet area while maintaining the siphon effect. As the water volume gradually decreases, the movable baffle will also descend with the water level while maintaining the siphon state, prolonging the siphon effect until the rainwater is drained. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the top plate and several guide vanes of the present invention;

[0025] The components are as follows: 1. Mounting plate; 2. Guide vane; 3. Top plate; 4. First bearing; 5. First connecting rod; 6. Telescopic rod; 7. Scraper; 8. Filter screen; 9. Limiting block; 10. Ball bearing; 11. Second connecting rod; 12. Mounting bracket; 13. Second bearing; 14. Float; 15. Centrifugal impeller; 16. Third connecting rod; 17. Conical plug; 18. Blocking plate; 20. Liquid outlet; 21. Check valve; 22. Tesla valve flow channel; 23. Drainage pipe; 24. Movable partition. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figures 1 to 3 The present invention discloses a siphon rainwater hopper for building drainage, comprising: a mounting plate 1, a grid assembly coaxially fixed to the top of the mounting plate 1, and a drainage pipe 23 coaxially fixed to the bottom of the mounting plate 1, the drainage pipe 23 being connected to the grid assembly;

[0029] A movable partition 24 is vertically slidably connected inside the grille assembly. The movable partition 24 is limited by a limiting part, which is fixedly connected to the middle of the inner side of the grille assembly.

[0030] A float ball 14 is installed inside the drainage pipe 23, and the float ball 14 is connected to the movable partition 24 in a transmission manner.

[0031] In use, when drainage is not required, the movable baffle 24 is positioned above the limiting part under the action of the limiting part. A gap is left between the movable baffle 24 and the water inlet end of the drainage pipe 23 for rainwater to pass through. When the amount of rainwater is small, the rainwater enters from both sides of the grid assembly and then enters the drainage pipe 23 through the gap between the movable baffle 24 and the water inlet end of the drainage pipe 23 to achieve gravity drainage. When the amount of rainwater is large, as the amount of rainwater increases, the drainage capacity of the drainage pipe 23 is insufficient, causing the rainwater level to gradually submerge the movable baffle 24. At this time, the air inside the drainage pipe 23 is expelled, and the drainage pipe 23 is filled with rainwater to form a siphon drainage, which improves the drainage capacity. During the process of the rainwater filling the drainage pipe 23, the float 14 rises under the action of buoyancy, which drives the movable baffle 24 to move upward within the grid assembly, increasing the distance between the movable baffle 24 and the water inlet of the drainage pipe 23. In fact, under the condition of ensuring siphon drainage, the effective area of ​​water inlet is increased, thereby improving the drainage efficiency per unit time.

[0032] The movable baffle 24 of this device is initially positioned low, which facilitates the formation of a siphon effect even when there is a small amount of water accumulation. As the water level rises, the movable baffle 24 can increase the effective water inlet area while maintaining the siphon effect. As the water volume gradually decreases, the movable baffle 24 will also drop with the water level while maintaining the siphon state, prolonging the siphon effect until the rainwater is drained.

[0033] The scheme is further optimized. The grid assembly includes a top plate 3, which is coaxially arranged with the mounting plate 1. Several guide vanes 2 are fixedly connected between the top plate 3 and the mounting plate 1. The guide vanes 2 are arranged at equal intervals around the circumference, and there is a gap between two adjacent guide vanes 2.

[0034] The bottom of the guide vane 2 is fixedly connected to the top of the mounting plate 1;

[0035] The limiting part is located in the middle of several guide vanes 2.

[0036] The scheme is further optimized. The limiting part includes several limiting blocks 9, which correspond one-to-one with several guide vanes 2. The limiting blocks 9 are fixed in the middle of the corresponding guide vanes 2, and the movable partition 24 is vertically limited and cooperates with the limiting blocks 9.

[0037] The design has been further optimized so that the top of the limit block 9 is connected to a ball bearing 10.

[0038] The grid assembly consists of several guide vanes 2, which are spaced apart. Rainwater enters through the gap between two guide vanes 2. The guide vanes 2 are designed to prevent the formation of eddies and to prevent larger debris from entering and clogging the drain outlet.

[0039] The limiting block 9 is fixed in the middle of the guide plate 2 to ensure the minimum distance between the movable baffle 24 and the inlet of the drainage pipe 23.

[0040] The rolling ball 10 on the limiting block 9 allows the movable partition 24 to rotate on the horizontal plane where the top of the ball 10 is located.

[0041] In a further optimized design, the bottom end of the second connecting rod 11 is fixedly connected to the top axis of the float 14. A mounting bracket 12 is coaxially sleeved on the outside of the second connecting rod 11. The second connecting rod 11 passes through the center of the mounting bracket 12. The top end of the second connecting rod 11 is fixedly connected to the bottom axis of the movable partition 24.

[0042] The second connecting rod 11 is installed inside the drain pipe 23 via the mounting bracket 12. The second connecting rod 11 passes through the middle of the mounting bracket 12. The mounting bracket 12 is used to allow the second connecting rod 11 to move vertically. When the drain pipe 23 is filled with water, the float 14 pushes the second connecting rod 11 upward under the action of buoyancy.

[0043] The mounting bracket 12 is formed by at least two rods meeting at the center, and the ends of the rods are fixed to the inner wall of the drainage pipe 23.

[0044] In a further optimized design, a liquid-blocking plate 18 is coaxially fixed inside the drainage pipe 23. The liquid-blocking plate 18 is located below the float 14. A liquid outlet hole 20 is opened in the center of the liquid-blocking plate 18. A conical plug 17 for sealing is provided inside the liquid outlet hole 20. A gap is left between the outer wall of the conical plug 17 and the inner wall of the liquid outlet hole 20. The bottom end of the third connecting rod 16 is axially fixed to the top of the conical plug 17. The top end of the third connecting rod 16 is fixed to the bottom of the float 14.

[0045] The liquid blocking plate 18 has a liquid outlet hole 20 in the middle, and a conical block 17 is provided inside the liquid outlet hole 20. There is a gap between the outer wall of the conical block 17 and the inner wall of the liquid outlet hole 20. This gap is achieved by adjusting the length of the third connecting rod 16 and cooperating with several limiting blocks 9. When the water volume is small, the water flows out through the gap between the outer wall of the conical block 17 and the inner wall of the liquid outlet hole 20.

[0046] When the water volume is large, the gap is insufficient to meet the drainage requirements, causing water to accumulate in the drainage pipe 23. Subsequently, the float 14 rises. The rise of the float 14 will drive the conical block 17 away from the liquid outlet 20 through the third connecting rod 16, making the gap between the outer wall of the conical block 17 and the inner wall of the liquid outlet 20 larger, thereby increasing the drainage flow and improving the drainage effect.

[0047] After the siphon condition is formed inside the drainage pipe 23, the gap between the outer wall of the conical block 17 and the inner wall of the liquid outlet 20 increases, thereby increasing the drainage volume and improving the drainage efficiency.

[0048] In a further optimized design, a check valve 21 is coaxially fixed to the bottom of the drainage pipe 23. The inlet end of the check valve 21 is connected to the outlet end of the drainage pipe 23. Several Tesla valve channels 22 are evenly spaced on the inner circumference of the check valve 21. The inlet end of the Tesla valve channel 22 is connected to the outlet end of the drainage pipe 23. The liquid acceleration direction of the Tesla valve channel 22 is set downward.

[0049] Check valve 21 is used to prevent liquid backflow and reduce drainage efficiency.

[0050] The liquid acceleration direction of the Tesla valve flow channel 22 is downward, which can ensure the drainage speed while preventing liquid backflow from affecting the drainage speed.

[0051] In a further optimized design, a centrifugal impeller 15 is coaxially sleeved on the outer side of the third connecting rod 16. The centrifugal impeller 15 is located below the float 14. The fixed end of the second bearing 13 is fixedly connected to the center of the mounting bracket 12. The rotating end of the second bearing 13 is radially limited and matched with the second connecting rod 11. The rotating end of the second bearing 13 is axially slidably connected with the second connecting rod 11.

[0052] In use, when water enters the drain pipe 23, it then enters the inlet end of the centrifugal impeller 15. The water is discharged from the side wall of the centrifugal impeller 15. When the drain pipe 23 is full of water, the water will drive the centrifugal impeller 15 to rotate when it passes through the centrifugal impeller 15. The centrifugal impeller 15 can drive the movable partition 24 to rotate through the second bearing 13. At the same time, the second bearing 13 is axially slidably connected to the second connecting rod 11, which does not affect the float 14 driving the movable partition 24 to rise and fall.

[0053] In a further optimized design, the bottom end of a telescopic rod 6 is fixedly connected to the top axis of the movable partition 24. The top end of the telescopic rod 6 is rotatably connected to the top plate 3 through the first bearing 4. The top end of the telescopic rod 6 passes through the top plate 3 and is fixedly connected to one end of several first connecting rods 5. The other end of the first connecting rods 5 is fixedly connected to a vertically arranged scraper 7. Several scrapers 7 contact the outer wall of the filter screen 8. The filter screen 8 is coaxially fixed to the outer side of several guide vanes 2.

[0054] A filter screen 8 is installed over several guide vanes 2 to prevent debris from entering and clogging the drainage pipe 23. At the same time, the movable baffle 24 rotates, and through the cooperation of the telescopic rod 6 and the first bearing 4, several first connecting rods 5 rotate simultaneously, driving the corresponding scraper 7 to move along the outer wall of the filter screen 8, scraping off the debris on the outer wall of the filter screen 8 and preventing the filter screen 8 from clogging.

[0055] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0056] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A siphon rainwater hopper for building drainage, characterized in that, include: Mounting plate (1), the top of the mounting plate (1) is coaxially fixed with a grid assembly, the bottom of the mounting plate (1) is coaxially fixed with a drainage pipe (23), and the drainage pipe (23) is connected to the grid assembly; A movable partition (24) is vertically slidably connected inside the grille assembly. The movable partition (24) is limited by a limiting part, which is fixed to the middle of the inner side of the grille assembly. The drainage pipe (23) is equipped with a float (14), which is connected to the movable partition (24) in a transmission manner; The bottom end of the second connecting rod (11) is fixedly connected to the top axis of the float (14). The second connecting rod (11) is coaxially sleeved with a mounting bracket (12). The second connecting rod (11) passes through the center of the mounting bracket (12). The top end of the second connecting rod (11) is fixedly connected to the bottom axis of the movable partition (24). A liquid-blocking plate (18) is coaxially fixed inside the drainage pipe (23). The liquid-blocking plate (18) is located below the float (14). A liquid outlet hole (20) is opened in the center of the liquid-blocking plate (18). A conical plug (17) for sealing is provided inside the liquid outlet hole (20). A gap is left between the outer wall of the conical plug (17) and the inner wall of the liquid outlet hole (20). The bottom end of a third connecting rod (16) is axially fixed to the top of the conical plug (17). The top end of the third connecting rod (16) is fixed to the bottom of the float (14). A check valve (21) is coaxially fixed to the bottom of the drainage pipe (23). The inlet end of the check valve (21) is connected to the outlet end of the drainage pipe (23). Several Tesla valve channels (22) are evenly spaced in the inner circumference of the check valve (21). The inlet end of the Tesla valve channel (22) is connected to the outlet end of the drainage pipe (23). The liquid acceleration direction of the Tesla valve channel (22) is downward.

2. The siphon rainwater hopper for building drainage according to claim 1, characterized in that: The grid assembly includes a top plate (3), which is coaxially arranged with the mounting plate (1). A plurality of guide vanes (2) are fixedly connected between the top plate (3) and the mounting plate (1). The plurality of guide vanes (2) are arranged at equal intervals in the circumference, and a gap is provided between two adjacent guide vanes (2). The bottom of the guide plate (2) is fixedly connected to the top of the mounting plate (1); The limiting part is disposed in the middle of the plurality of guide plates (2).

3. A siphon rainwater hopper for building drainage according to claim 2, characterized in that: The limiting part includes a plurality of limiting blocks (9), and the plurality of limiting blocks (9) correspond one-to-one with the plurality of guide vanes (2). The limiting blocks (9) are fixed in the middle of the corresponding guide vanes (2), and the movable partition (24) is vertically limited and cooperates with the plurality of limiting blocks (9).

4. A siphon rainwater hopper for building drainage according to claim 3, characterized in that: The top of the limiting block (9) is connected to a ball bearing (10).

5. A siphon rainwater hopper for building drainage according to claim 1, characterized in that: A centrifugal impeller (15) is coaxially sleeved on the outside of the third connecting rod (16). The centrifugal impeller (15) is located below the float (14). The fixed end of the second bearing (13) is fixedly connected to the center of the mounting bracket (12). The rotating end of the second bearing (13) is radially limited to the second connecting rod (11). The rotating end of the second bearing (13) is axially slidably connected to the second connecting rod (11).

6. A siphon rainwater hopper for building drainage according to claim 2, characterized in that: The bottom end of the telescopic rod (6) is fixedly connected to the top axis of the movable partition (24). The top end of the telescopic rod (6) is rotatably connected to the top plate (3) through the first bearing (4). The top end of the telescopic rod (6) passes through the top plate (3) and is fixedly connected to one end of several first connecting rods (5). The other end of the first connecting rods (5) is fixedly connected to a vertically arranged scraper (7). Several scrapers (7) contact the outer side wall of the filter screen (8). The filter screen (8) is coaxially fixed to the outside of several guide vanes (2).

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