Rainwater overflow well with backflow prevention function

Abstract

The utility model discloses a rainwater overflow well with an anti-backflow function, belongs to the field of municipal engineering, and solves the problem that heavy rainfall easily causes rainwater backflow. The drainage device comprises a rainwater grate, a drainage channel is arranged below the rainwater grate, the bottom of the drainage channel is movably connected with a sealing plate, a hinge arm is arranged on the outer side of the drainage channel, the sealing plate is rotationally connected to the hinge arm through a rotating shaft rod, a balancing weight is arranged on one side of the sealing plate, and the sealing plate and the balancing weight are located on the two sides of the rotating shaft rod respectively. The sealing plate movably connected is arranged at the bottom of the drainage channel, and opening and closing of the sealing plate are controlled by the balance relation between the borne rainwater weight and the balancing weight. When rainwater is little, the sealing plate is closed at the bottom of the drainage channel, and the reverse flow and backflow phenomena caused by excessive rainwater in the pipe gallery are effectively prevented; when much rainwater exists, the sealing plate rotates and turns downwards along the rotating shaft rod, the bottom of the drainage channel is opened, and the rainwater is drained away.

Description

Technical Field

[0001] This utility model belongs to the field of municipal engineering, specifically relating to a rainwater overflow well with anti-backflow function. Background Technology

[0002] Stormwater overflow wells are an important component of municipal road engineering and landscaping. Low-lying areas and sunken green spaces are characterized by rainwater accumulation, which helps reduce runoff. Stormwater overflow wells are the main drainage devices in low-lying areas, preventing rainwater from exceeding the storage capacity of the depression and overflowing onto municipal roads, effectively preventing urban flooding.

[0003] When encountering sudden and heavy rainfall, the municipal utility tunnel drainage system may be unable to immediately drain the rainwater inside the tunnel, causing rainwater backflow and flooding. In addition, excessive rainwater accumulation in low-lying areas can easily lead to large-scale urban flooding disasters. Utility Model Content

[0004] The purpose of this invention is to provide a rainwater overflow well with anti-backflow function to solve the problem of rainwater backflow caused by heavy rainfall.

[0005] The technical solution of this utility model is: a rainwater overflow well with anti-backflow function, including a rainwater grate, a drainage channel provided below the rainwater grate, a sealing plate movably connected to the bottom of the drainage channel, a hinge arm provided on the outside of the drainage channel, the sealing plate being rotatably connected to the hinge arm through a rotating shaft, a counterweight provided on one side of the sealing plate, and the sealing plate and the counterweight being located on both sides of the rotating shaft respectively.

[0006] As a further improvement of this utility model, the top of the sealing plate is provided with a boss, which engages with the inner wall around the bottom of the drainage channel.

[0007] As a further improvement of this utility model, an inclined hydrophobic plate is provided on one side of the hydrophobic channel.

[0008] As a further improvement of this utility model, a first connecting frame is provided around the bottom of the rain grate, and a second connecting frame is provided around the top of the drainage channel. Bolt holes are provided on the first and second connecting frames respectively, and connecting bolts are installed in the corresponding bolt holes.

[0009] As a further improvement of this utility model, a protruding strip is provided on the inner periphery of the first connecting frame, and a groove is provided on the inner periphery of the second connecting frame, with the protruding strip engaging in the groove.

[0010] As a further improvement of this utility model, the rain grate is composed of a top grate unit and multiple side grate units, with the multiple side grate units connected in an enclosing manner, and the top grate unit being located on top of the enclosing side grate units.

[0011] The beneficial effects of this utility model are as follows: A movable sealing plate is installed at the bottom of the drainage channel. The opening and closing of the sealing plate is controlled by the balance between the weight of the rainwater it bears and the counterweight. When there is little rain, the weight of the rainwater borne by the sealing plate is lighter, and under the action of the counterweight, the sealing plate can remain closed at the bottom of the drainage channel, effectively preventing backflow due to excessive rainwater in the pipe gallery. When there is more rain, the weight of the rainwater borne by the sealing plate is greater than the weight of the counterweight, causing the sealing plate to rotate and flip down along the pivot, opening the bottom of the drainage channel and allowing the rainwater to drain away. This utility model utilizes the principles of physical and mechanical construction to design a rainwater overflow well with anti-backflow function. It has a simple structure, is easy to assemble and use, and has good reliability and practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is an exploded view of the present invention.

[0014] In the diagram: 1-Rain grate; 101-Top grate unit; 102-Side grate unit; 2-Drain hole; 3-First connecting frame; 4-Bolt hole; 5-Raised strip; 6-Groove; 7-Second connecting frame; 8-Drainage channel; 9-Hinged arm; 11-Rotating shaft; 12-Sealing plate; 13-Boss; 14-Counterweight; 16-Drainage plate. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings.

[0016] like Figure 1 , Figure 2 As shown, a rainwater overflow well with anti-backflow function includes a rainwater grate 1, a drainage hole 2 on the rainwater grate 1, a drainage channel 8 below the rainwater grate 1, a sealing plate 12 movably connected to the bottom of the drainage channel 8, a hinged arm 9 on the outside of the drainage channel 8, the sealing plate 12 being rotatably connected to the hinged arm 9 via a rotating shaft 11, and a counterweight 14 on one side of the sealing plate 12, with the sealing plate 12 and the counterweight 14 located on both sides of the rotating shaft 11 respectively.

[0017] The top of the sealing plate 12 is provided with a boss 13, which engages with the inner wall of the bottom periphery of the drainage channel 8 to improve the sealing performance of the sealing plate 12.

[0018] An inclined drainage plate 16 is provided on one side of the drainage channel 8 to guide the flow. The drainage plate 16 is positioned opposite the counterweight 14, and the area below the drainage plate 16 is provided for the counterweight 14 to rotate.

[0019] The bottom perimeter of the rain grate 1 is provided with a first connecting frame 3, and the top perimeter of the drainage channel 8 is provided with a second connecting frame 7. The first connecting frame 3 and the second connecting frame 7 are respectively provided with bolt holes 4, and connecting bolts are installed in the corresponding bolt holes 4.

[0020] The inner periphery of the first connecting frame 3 is provided with a protrusion 5, and the inner periphery of the second connecting frame 7 is provided with a groove 6, with the protrusion 5 engaging in the groove 6.

[0021] The rain grate 1 consists of a top grate unit 101 and multiple side grate units 102, which are connected and enclosed. The top grate unit 101 is located on top of the enclosed side grate units 102, and the first connecting frame 4 is located at the bottom of the enclosed side grate units 102. The three-dimensional shape of the rain grate 1 can increase the water flow area and accelerate the flow rate.

[0022] The pivot rod 11 is positioned between the sealing plate 12 and the counterweight 14. The sealing plate 12 and the counterweight 14 are integrated and are installed between the two hinged arms 9 via the pivot rod 11.

[0023] The side grate unit 102 has four trapezoidal sections. When installing the rain grate 1, the protrusion 5 at the bottom of the first connecting frame 3 engages with the groove 6 on the second connecting frame 7, which facilitates the quick positioning and installation of the rain grate 1. Then, the connecting bolts are installed in the corresponding bolt holes 4 of the first connecting frame 3 and the second connecting frame 7 to fix the rain grate 1 and the drainage channel 8.

[0024] Rainwater from low-lying areas in municipal engineering and landscaping projects flows into drainage channels 8 through drainage holes 2 on rainwater grates 1. During periods of low rainfall, rainwater accumulates in drainage channels 8. The weight of the rainwater borne by the sealing plate 12 is relatively light, and with the help of the counterweight 14, the sealing plate 12 remains closed at the bottom of the drainage channel 8, effectively preventing backflow due to excessive rainwater in the utility tunnel. During heavy rain, the amount of rainwater accumulated in the drainage channel 8 increases. When the weight of the rainwater borne by the sealing plate 12 exceeds the weight of the counterweight 14, the sealing plate 12 rotates and flips down along the pivot rod 11. At this time, the bottom of the drainage channel 8 opens, allowing rainwater to be guided into the municipal utility tunnel system through rainwater pipes, achieving rapid drainage and channeling of rainwater from municipal roads.

Claims

1. A rainwater overflow well with anti-backflow function, comprising a rainwater grate (1), characterized in that: A drainage channel (8) is provided below the rain grate (1). A sealing plate (12) is movably connected to the bottom of the drainage channel (8). A hinge arm (9) is provided on the outside of the drainage channel (8). The sealing plate (12) is rotatably connected to the hinge arm (9) through a rotating shaft (11). A counterweight (14) is provided on one side of the sealing plate (12). The sealing plate (12) and the counterweight (14) are located on both sides of the rotating shaft (11).

2. A rainwater overflow well with anti-backflow function according to claim 1, characterized in that: The top of the sealing plate (12) is provided with a boss (13), which engages with the inner wall around the bottom of the drainage channel (8).

3. A rainwater overflow well with anti-backflow function according to claim 1 or 2, characterized in that: An inclined hydrophobic plate (16) is provided on one side of the hydrophobic channel (8).

4. A rainwater overflow well with anti-backflow function according to claim 3, characterized in that: The bottom periphery of the rain grate (1) is provided with a first connecting frame (3), and the top periphery of the drainage channel (8) is provided with a second connecting frame (7). The first connecting frame (3) and the second connecting frame (7) are respectively provided with bolt holes (4), and connecting bolts are installed in the corresponding bolt holes (4).

5. A rainwater overflow well with anti-backflow function according to claim 4, characterized in that: The first connecting frame (3) has a protruding strip (5) on its inner periphery, and the second connecting frame (7) has a groove (6) on its inner periphery, with the protruding strip (5) engaging in the groove (6).

6. A rainwater overflow well with anti-backflow function according to claim 5, characterized in that: The rain grate (1) is composed of a top grate unit (101) and multiple side grate units (102), with the multiple side grate units (102) connected in an enclosed manner, and the top grate unit (101) being located on top of the enclosed side grate units (102).

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