Siphon drainage device

Abstract

The utility model discloses a siphon drainage device, and mainly relates to the technical field of drainage. Comprising a main drainage pipe installed on a roof, a plurality of water inlet holes are formed in the outer wall of the main drainage pipe, filter screens are arranged in the water inlet holes, a sealing cover with buoyancy is arranged at the top of the main drainage pipe, and an annular filter plate is arranged in an annular space between the sealing cover and the main drainage pipe. The filter plate is fixed to the inner wall of the sealing cover and is in sliding connection with the main drainage pipe, a guide sliding rod is vertically arranged on the main drainage pipe, a check ring is arranged at the top of the guide sliding rod, and the guide sliding rod is sleeved with a spring; when the rainfall is too large, the siphon effect is utilized, the drainage speed can be increased, it is guaranteed that even if the rainfall is large, the main drainage pipe can effectively work, and when the drainage amount is not large or no water is drained, the water inlet end of the main drainage pipe is covered with the sealing cover, and the water inlet end of the main drainage pipe can be prevented from being blocked when not used.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage, in particular to a siphon drainage device. Background Art

[0002] Most traditional roof drainage devices use a water inlet. Once the water inlet is blocked or the water cannot be discharged in a timely and effective manner, water will accumulate on the roof. In addition, most water inlets are exposed to the outside all year round and are prone to blockage when there is no water to drain. In order to solve the problem of water inlet blockage, a utility model patent with publication number CN211341456U discloses a planted roof protective siphon drainage device, which uses a protective cover that can float up and down for protection. In clear weather, the protective cover completely covers and closes the drainage hopper to prevent debris and dust in the air from affecting the patency of the drainage hopper. In rainy weather, the protective cover floats above the accumulated water to ensure that the drainage channel of the drainage hopper is open, which can ensure the patency of the drainage system in rainy weather. However, before the protective cover moves to the top of the filter cover, the water is only discharged through the water guide hole, and the drainage speed is limited. Utility Model Content

[0003] The purpose of the utility model is to solve the problems existing in the prior art and provide a siphon drainage device. When the rainfall is too heavy, the siphon effect is utilized to speed up the drainage speed, thereby ensuring that the main drainage pipe can work effectively even when the rainfall is heavy. Moreover, when the drainage volume is not large or no water is discharged, the water inlet end of the main drainage pipe is covered by a sealing cover, which can also prevent the water inlet end of the main drainage pipe from being blocked when not in use.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] A siphon drainage device comprises a main drain pipe installed on a roof, a plurality of water inlet holes are provided on the outer wall of the main drain pipe, and the water inlet holes are located above the roof, a filter screen is provided in the water inlet holes, a sealing cover with buoyancy is provided on the top of the main drain pipe, the sealing cover is located above the water inlet holes, the inner diameter of the sealing cover is larger than the outer diameter of the main drain pipe, an annular filter plate is provided in the annular space between the sealing cover and the main drain pipe, the filter plate is fixed on the inner wall of the sealing cover and is slidably connected to the main drain pipe, a guide slide rod is vertically provided on the main drain pipe, the guide slide rod passes through the sealing cover and is slidably connected to the sealing cover, a stop ring is provided on the top of the guide slide rod, a spring is sleeved on the guide slide rod, the bottom end of the spring abuts against the sealing cover, and the top end abuts against the stop ring.

[0006] Preferably, the bottom of the sealing cover is provided with an extension portion extending outward.

[0007] Preferably, a first sealing ring is provided on the inner wall of the filter plate.

[0008] Preferably, a second sealing ring is provided between the sealing cover and the guide slide rod.

[0009] Preferably, a fixing frame is fixedly provided in the main drainage pipe, the bottom end of the guide slide bar is fixed on the fixing frame, and the top end extends upward out of the main drainage pipe.

[0010] Preferably, the fixing frame includes a circular ring and a cross-shaped bracket fixedly arranged in the circular ring, and a triangular support frame adapted to the circular ring is provided on the inner wall of the main drainage pipe.

[0011] Preferably, a pipe stabilizing frame for fixing the main drainage pipe is provided at the bottom of the roof, and the connection between the main drainage pipe and the pipe stabilizing frame is U-shaped.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The water inlet hole of the utility model is used to facilitate drainage when the amount of rain is not large, and when the amount of rain is too heavy, the siphon effect is utilized to speed up the drainage speed, thereby ensuring that the main drain pipe can work effectively even when the amount of rain is large, and when the drainage amount is not large, or when no water is discharged, the water inlet end on the main drain pipe is covered by the sealing cover, which can also prevent the water inlet end of the main drain pipe from being blocked when not in use; in addition, by arranging a filter plate, the water entering the main drain pipe from the top water inlet end of the main drain pipe can be filtered, thereby preventing the water inlet end of the main drain pipe from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a structural diagram of the fixing frame.

[0016] The numbers shown in the accompanying drawings are: 1. roof; 2. main drain pipe; 3. water inlet; 4. filter screen; 5. sealing cover; 6. filter plate; 7. guide slide rod; 8. stop ring; 9. spring; 10. fixing frame; 11. triangular support frame; 12. pipe stabilizing frame. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined in this application.

[0018] Example: As shown in the attached Figure 1-2As shown, the utility model is a siphon drainage device, including a main drain pipe 2 installed on the roof 1, a fence is provided around the roof 1, the main drain pipe 2 is located on the inner side of the fence, the main drain pipe 2 vertically passes through the roof 1, the main drain pipe 2 can be pre-buried in the roof 1, and a plurality of water inlet holes 3 are evenly provided on the outer wall of the main drain pipe 2 along the circumference of the main drain pipe 2, and the water inlet holes 3 are located above the roof 1, and a filter screen 4 is provided in the water inlet hole 3, the filter screen 4 can be prefabricated in the water inlet hole 3, or the filter screen 4 can be fixed to one end of a sleeve with a thread on the outside, a corresponding internal thread is processed in the water inlet hole 3, and the sleeve is screwed into the water inlet hole 3.

[0019] A buoyant sealing cover 5 is provided on the top of the main drain pipe 2. The sealing cover 5 is a cover body with a closed top and an open bottom. The sealing cover 5 is made of a buoyant material, and a floating block can also be glued to the bottom end of the sealing cover 5. The sealing cover 5 is located above the water inlet 3. The inner diameter of the sealing cover 5 is larger than the outer diameter of the main drain pipe 2. An annular filter plate 6 is provided in the annular space between the sealing cover 5 and the main drain pipe 2. The filter plate 6 is fixed on the inner wall of the sealing cover 5 and is slidably connected to the main drain pipe 2. The filter plate 6 can be glued to the inner wall of the sealing cover 5. Preferably, a first sealing ring is provided on the inner wall of the filter plate 6, and the first sealing ring is located between the filter plate 6 and the main drain pipe 2.

[0020] A guide slide bar 7 is vertically provided on the main drain pipe 2 , and the guide slide bar 7 passes through the sealing cover 5 and is slidably connected to the sealing cover 5 , and the guide slide bar 7 provides a guide for the sealing cover 5 to slide up and down.

[0021] A stop ring 8 is provided on the top of the guide slide 7. The stop ring 8 can be a nut. A corresponding external thread is provided on the guide slide 7. A spring 9 is sleeved on the guide slide 7. The bottom end of the spring 9 abuts against the sealing cover 5, and the top end abuts against the stop ring 8. The spring 9 gives the sealing cover 5 a downward thrust.

[0022] A water inlet end is provided at the top of the main drain pipe 2, and the water inlet end at the top of the main drain pipe 2 is located inside the sealing cover 5. The sealing cover 5 and the filter plate 6 cannot cover the water inlet hole 3 regardless of whether the water level rises or falls. The opening positions of multiple water inlet holes 3 can be on the same horizontal plane as the top of the roof 1. The main drain pipe 2 is a siphon structure.

[0023] Preferably, the bottom of the sealing cover 5 is provided with an extension portion extending outward, which can increase the area of ​​the bottom of the sealing cover 5 .

[0024] Preferably, a second sealing ring is provided between the sealing cover 5 and the guide slide rod 7 .

[0025] Preferably, in order to facilitate the installation of the guide slide bar, a fixing frame 10 is fixed in the main drain pipe 2, the bottom end of the guide slide bar 7 is fixed on the fixing frame 10, and the top end extends upward from the main drain pipe 2.

[0026] Preferably, in order to facilitate the installation of the fixing frame, the fixing frame 10 includes a circular ring and a cross-shaped bracket fixed in the circular ring. A triangular support frame 11 adapted to the circular ring is provided on the inner wall of the main drainage pipe 2. The triangular support frame 11 is embedded in the inner wall of the main drainage pipe 2, and the circular ring is welded to the triangular support frame 11.

[0027] Preferably, a pipe stabilizing frame 12 for fixing the main drainage pipe 2 is provided at the bottom of the roof 1, and the connection between the main drainage pipe 2 and the pipe stabilizing frame 12 is U-shaped. The pipe stabilizing frame 12 is fixed to the bottom of the roof 1 by expansion screws.

[0028] During use, when the amount of rain is not large, water can smoothly flow back into the main drain pipe 2 through the water inlet hole 3. As the rain becomes heavier and the amount of water increases, the water inlet hole 3 cannot quickly drain all the water. As the water level rises, the sealing cover 5 will be lifted up. Since the sealing cover 5 is mounted on the guide slide 7, it will rise to a certain height along the guide slide 7. The sealing cover 5 squeezes the spring 9 while rising along the guide slide 7. When the water level fluctuates, the reaction force of the spring 9 quickly pushes the sealing cover 5 down, so that under the action of atmospheric pressure, water flows through the sealing cover 5. The annular space between the main drain pipe 2 and the main drain pipe 2 is sucked into the main drain pipe 2, forming a siphon phenomenon, which speeds up the drainage speed; ensuring that the main drain pipe 2 can work effectively even when the amount of rainwater is large, avoiding the problem of poor rainwater drainage, and the filter plate 6 can filter the water entering the main drain pipe 2 from the top water inlet end of the main drain pipe 2, avoiding the blockage of the water inlet end of the main drain pipe 2, and when the drainage volume is not large, or when there is no water to be discharged, the water inlet end on the main drain pipe 2 is covered by the sealing cover 5, which can also avoid the water inlet end of the main drain pipe 2 from being blocked when not in use.

Claims

1. A siphon drainage device, comprising a main drainage pipe (2) installed on a roof (1), characterized in that: The outer wall of the main drainage pipe (2) is provided with a plurality of water inlet holes (3), and the water inlet holes (3) are located above the roof (1). A filter screen (4) is provided in the water inlet holes (3). A buoyant sealing cover (5) is provided on the top of the main drainage pipe (2). The sealing cover (5) is located above the water inlet holes (3). The inner diameter of the sealing cover (5) is larger than the outer diameter of the main drainage pipe (2). An annular filter plate is provided in the annular space between the sealing cover (5) and the main drainage pipe (2). (6), the filter plate (6) is fixed on the inner wall of the sealing cover (5) and is slidably connected to the main drainage pipe (2), a guide slide bar (7) is vertically provided on the main drainage pipe (2), the guide slide bar (7) passes through the sealing cover (5) and is slidably connected to the sealing cover (5), a stop ring (8) is provided on the top of the guide slide bar (7), a spring (9) is sleeved on the guide slide bar (7), the bottom end of the spring (9) abuts against the sealing cover (5), and the top end abuts against the stop ring (8).

2. A siphon drainage device according to claim 1, characterized in that: The bottom of the sealing cover (5) is provided with an extension portion extending outward.

3. The siphon drainage device according to claim 1, characterized in that: A first sealing ring is provided on the inner wall of the filter plate (6).

4. The siphon drainage device according to claim 1, characterized in that: A second sealing ring is provided between the sealing cover (5) and the guide slide rod (7).

5. The siphon drainage device according to claim 1, characterized in that: A fixing frame (10) is fixedly provided in the main drainage pipe (2), the bottom end of the guide slide bar (7) is fixed on the fixing frame (10), and the top end extends upward from the main drainage pipe (2).

6. The siphon drainage device according to claim 5, characterized in that: The fixing frame (10) comprises a circular ring and a cross-shaped bracket fixedly arranged in the circular ring, and a triangular support frame (11) adapted to the circular ring is provided on the inner wall of the main drainage pipe (2).

7. The siphon drainage device according to claim 1, characterized in that: A pipe stabilizing frame (12) for fixing the main drainage pipe (2) is provided at the bottom of the roof (1), and the connection between the main drainage pipe (2) and the pipe stabilizing frame (12) is U-shaped.

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