Rainwater drainage device

Abstract

The utility model discloses a rainwater drainage device, which relates to the technical field of building drainage, and comprises a roof, an outer drainage tube and an inner drainage tube, the outer drainage tube is embedded in a drainage port of the roof, a fixing ring is fixedly arranged in the outer drainage tube, the inner drainage tube is arranged on the fixing ring, and the inner drainage tube is arranged on the roof. The roof drainage device comprises an inner drainage pipe and an outer drainage pipe, a filter screen cylinder is arranged between the inner drainage pipe and the outer drainage pipe, a floating ring is installed at the bottom of the filter screen cylinder, a drainage hole is formed in the side face of the inner drainage pipe, and a trash holding cover is installed on the roof. When rainwater flow is too large, rainwater collected between the outer drainage pipe and the inner drainage pipe can be used for enabling the floating ring to float, so that the filter screen cylinder is ejected upwards through the floating ring, part of the filter screen cylinder extends out of the trash holding cover, the drainage efficiency of the rainwater is improved, and then the device can better adapt to rainstorm weather.

Description

TECHNICAL FIELD

[0001] The utility model relates to building drainage technical field, concretely is a rainwater drainage device. BACKGROUND

[0002] Roof area water can cause roof structure to be damaged, even causes leakage problem, good drainage system can quickly drain roof area water, reduces the time of water in roof, thereby lightens the pressure of waterproof layer, protects roof structure from being damaged, and the existing roof drainage is mostly first setting rainwater drainage device at the drainage port, utilizes rainwater drainage device and leads rainwater to building drainage pipe and drains.

[0003] Through the retrieval, patent authorized announcement No. CN 106948557 A discloses a building rainwater drainage device, which is provided with a filter screen on the drainage device, which filters and collects impurities in the rainwater, and has the characteristics of convenient collection of sundries and prevention of pipeline blockage, but the effective water area of the filter screen of the above-mentioned rainwater drainage device is fixed and cannot be adjusted according to the size of the rainfall, which is prone to rainwater retention in heavy rain weather, and external impurities are easy to block the filter screen, thereby reducing the rainwater drainage efficiency. UTILITY MODEL CONTENT

[0004] The utility model provides a rainwater drainage device, has the advantages that the water area can be adjusted, to solve the above-mentioned rainwater drainage device water area of the prior art in the background part cannot be adjusted, and the problem that it is difficult to adapt to heavy rain weather.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rainwater drainage device, including roof, outer drainage pipe and inner drainage pipe, the roof drainage port is embedded with outer drainage pipe, the outer drainage pipe is fixedly provided with fixed ring, the fixed ring is installed with inner drainage pipe, the filter screen cylinder is arranged between the inner drainage pipe and the outer drainage pipe, the bottom of the filter screen cylinder is installed with the float ring, the side surface of the inner drainage pipe is provided with the drainage hole, the roof is installed with the dirt blocking cover, the dirt blocking cover is provided with the through hole matched with the filter screen cylinder, the dirt blocking cover includes the cover body and the cover edge, the cover body side surface is provided with the lattice hole, the anchor screw is installed on the cover edge, and the cover edge is fixedly connected with the roof through the anchor screw.

[0006] As a preferred technical scheme of the utility model, the outer drainage pipe bottom is installed with the flange plate, and the flange hole is formed in the flange plate.

[0007] As a preferred technical scheme of the utility model, the top surface of the filter screen cylinder is a non-porous surface.

[0008] As a preferred technical scheme of the utility model, the inner diameter of the floating ring is equal to the inner diameter of the filter screen cylinder and greater than the outer diameter of the inner drainage pipe, and the outer diameter of the floating ring is equal to the inner diameter of the outer drainage pipe.

[0009] As a preferred technical scheme of the utility model, the filter screen cylinder and the outer drainage pipe are matched in size.

[0010] As a preferred technical scheme of the utility model, the upper ring surface of the floating ring gradually decreases in height from outside to inside.

[0011] As a preferred technical scheme of the utility model, the fixing ring is provided with a top rod.

[0012] Compared with the prior art, the utility model provides a rainwater drainage device with the following beneficial effects:

[0013] 1. The rainwater drainage device, by setting filter screen cylinder, floating ring, top rod and drainage hole and inner drainage pipe, can use the rainwater collected between the outer drainage pipe and the inner drainage pipe to make the floating ring float up when the rainwater flow is large, so that the filter screen cylinder is pushed out upward through the floating ring, so that the filter screen cylinder part is stretched out of the dirt blocking cover, the rainwater drainage efficiency is improved, and the device can better adapt to the heavy rain weather.

[0014] 2. The rainwater drainage device, by setting the dirt blocking cover, the grid hole formed in the dirt blocking cover can intercept the large particles mixed in the rainwater, thereby reducing the filtering pressure of the filter screen cylinder in the middle of the dirt blocking cover, so that the filter screen cylinder is not easy to be blocked, and the rainwater drainage process is more smooth. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is an installation structure schematic view of the utility model;

[0016] Fig. 2 It is an overall cut open view of the utility model;

[0017] Fig. 3 It is a local structure cut open view of the utility model.

[0018] In the drawing: 1, roof; 2, outer drainage pipe; 3, inner drainage pipe; 4, top rod; 5, floating ring; 6, filter screen cylinder; 7, dirt blocking cover; 701, cover edge; 702, grid hole; 703, cover body; 8, anchor screw; 9, flange plate; 10, drainage hole; 11, fixing ring; 12, flange hole; 13, through hole. DETAILED DESCRIPTION

[0019] Clearly, the described embodiments are merely part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present utility model.

[0020] Please refer to Figs. 1-3 The utility model discloses a rainwater drainage device, including roof 1, outer drainage pipe 2 and inner drainage pipe 3, the drain of roof 1 embeds formula installation has outer drainage pipe 2, and the fixed ring 11 is fixed in outer drainage pipe 2, and the fixed ring 11 is installed with inner drainage pipe 3, and the filter screen cylinder 6 is arranged between inner drainage pipe 3 and outer drainage pipe 2, and the float ring 5 is installed at the bottom of filter screen cylinder 6, and the side surface of inner drainage pipe 3 is provided with drain hole 10, the utility model discloses can utilize the rainwater that gathers between outer drainage pipe 2 and inner drainage pipe 3 when rainwater flow is too big and makes float ring 5 float up, thereby through float ring 5, filter screen cylinder 6 is jacked out upwards, makes filter screen cylinder 6 part stretch out outside the dirt cover 7, improves the drainage efficiency of rainwater, and the dirt cover 7 is installed on roof 1, and the through hole 13 that is compatible with filter screen cylinder 6 is seted up on the dirt cover 7, and the dirt cover 7 includes cover body 703 and cover edge 701, and the grating hole 702 is seted up on the side surface of cover body 703, and the anchoring screw 8 is installed on cover edge 701, and cover edge 701 is fixedly connected with roof 1 through anchoring screw 8, and the grating hole 702 seted up on the dirt cover 7 can intercept the large particle impurities mixed in rainwater, thereby reducing the filtering pressure of filter screen cylinder 6 in the middle of dirt cover 7, making filter screen cylinder 6 not easy to block, making the rainwater drainage process more smooth.

[0021] Specifically, the flange plate 9 is installed at the bottom of the outer drainage pipe 2, and the flange hole 12 is formed in the flange plate 9.

[0022] In the embodiment, the flange plate 9 is arranged to facilitate the connection of the outer drainage pipe 2 and the building drainage pipe, so that the rainwater can be guided out through the drainage pipe.

[0023] Specifically, the top surface of the filter screen cylinder 6 is a non-porous surface.

[0024] In the embodiment, the top surface of the filter screen cylinder 6 is designed as a non-porous surface to prevent rainwater from flowing into the drainage pipe from the top of the device, which can easily cause impurities to accumulate on the top of the filter screen cylinder 6 and affect the normal floating of the filter screen cylinder 6.

[0025] Specifically, the inner diameter of the float ring 5 is equal to the inner diameter of the filter screen cylinder 6 and greater than the outer diameter of the inner drainage pipe 3, and the outer diameter of the float ring 5 is equal to the inner diameter of the outer drainage pipe 2.

[0026] In the embodiment, the size of the floating ring 5 is limited so that the floating ring 5 can quickly float up when there is too much rain, and then the filter screen cylinder 6 is lifted by the floating ring 5, so that the rainwater drainage efficiency is improved.

[0027] Specifically, the filter screen cylinder 6 is matched with the size of the upper pipe opening of the outer drainage pipe 2.

[0028] In the embodiment, the filter screen cylinder 6 is matched with the size of the upper pipe opening of the outer drainage pipe 2, so that the gap between the filter screen cylinder 6 and the outer drainage pipe 2 is smaller, and the impurities in the rainwater are prevented from entering the drain pipe through the gap between the filter screen cylinder 6 and the outer drainage pipe 2, so as to better ensure the rainwater filtering effect.

[0029] Specifically, the height of the upper ring surface of the floating ring 5 gradually decreases from outside to inside.

[0030] In the embodiment, the design is to enable the rainwater falling on the floating ring 5 to automatically flow to the inside of the floating ring 5 under the action of gravity, so as to guide the rainwater to the space below the floating ring 5 to provide buoyancy for the floating ring 5, and avoid the rainwater pressing on the floating ring 5 to affect the normal floating of the floating ring 5.

[0031] Specifically, the fixed ring 11 is provided with a jacking rod 4, and the jacking rod 4 can support the floating ring 5, so that a certain space is always left at the bottom of the floating ring 5 to facilitate the storage of rainwater, so as to facilitate the floating ring 5 to generate buoyancy and then float up.

[0032] The working principle and use process of the utility model are as follows: when rainwater is collected towards the drain of the roof 1, the large-particle impurities in the rainwater are first intercepted by the dirt blocking cover 7 arranged at the outermost side, then the rainwater reaches the filter screen cylinder 6 through the dirt blocking cover 7, the small-particle impurities in the rainwater are intercepted through the filter screen cylinder 6, then the rainwater enters the filter screen cylinder 6 and flows downwards into the inner drainage pipe 3 and the gap between the inner drainage pipe 3 and the outer drainage pipe 2, the rainwater entering the inner drainage pipe 3 directly flows downwards into the drain pipe and is discharged, and the rainwater between the inner drainage pipe 3 and the outer drainage pipe 2 flows into the inner drainage pipe 3 through the drain hole 10. When the rainfall is too large to be discharged in time, the water surface gradually rises, the floating ring 5 is driven by the rainwater buoyancy to gradually lift the filter screen cylinder 6, the filter screen cylinder 6 is lifted upwards through the through hole 13 of the dirt blocking cover 7, and the rainwater at the upper layer directly enters the inner drainage pipe 3 through the part of the filter screen cylinder 6, so that the rainwater drainage efficiency is improved when the rainfall is too large, and the heavy rain weather is better coped with.

[0033] It has to be noted that, as used herein, such terms as "including", "including a", "having", "comprising", "containing", or any other similar term are intended to be encompassing for a passage, a method, an article, or an apparatus that includes a series of elements, but not excluding the other elements not explicitly listed of further elements that can be inherent to such passage, method, article, or apparatus. The use of a phrase such as "including a" should not, in and of itself, exclude the presence of additional elements or steps, irrespective of whether the additional elements or steps are specifically disclosed in the specification.

[0034] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rainwater drainage device, comprising a roof (1), an external drainage pipe (2), and an internal drainage pipe (3), characterized in that: An external drain pipe (2) is embedded in the drain outlet of the roof (1). A fixing ring (11) is fixedly installed inside the external drain pipe (2). An internal drain pipe (3) is installed on the fixing ring (11). A filter screen cylinder (6) is provided between the internal drain pipe (3) and the external drain pipe (2). A float ring (5) is installed at the bottom of the filter screen cylinder (6). A drain hole (10) is opened on the side of the internal drain pipe (3). A dirt-blocking cover (7) is installed on the roof (1). A through hole (13) adapted to the filter screen cylinder (6) is opened on the dirt-blocking cover (7). The dirt-blocking cover (7) includes a cover body (703) and a cover edge (701). A grid hole (702) is opened on the side of the cover body (703). An anchor screw (8) is installed on the cover edge (701). The cover edge (701) is fixedly connected to the roof (1) by the anchor screw (8).

2. The rainwater diversion device according to claim 1, characterized in that: The bottom of the external drainage pipe (2) is fitted with a flange (9), and the flange (9) has a flange hole (12).

3. The rainwater diversion device according to claim 1, characterized in that: The top surface of the filter cylinder (6) is a non-porous surface.

4. A rainwater diversion device according to claim 1, characterized in that: The inner diameter of the float (5) is equal to the inner diameter of the filter cylinder (6) and greater than the outer diameter of the inner drain pipe (3). The outer diameter of the float (5) is equal to the inner diameter of the outer drain pipe (2).

5. A rainwater diversion device according to claim 1, characterized in that: The size of the filter cylinder (6) is matched with the size of the opening of the external drainage pipe (2).

6. A rainwater diversion device according to claim 1, characterized in that: The height of the upper ring surface of the float (5) gradually decreases from the outside to the inside.

7. A rainwater diversion device according to claim 1, characterized in that: A top rod (4) is installed on the fixing ring (11).

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