Flood gate

Abstract

The invention relates to the technical field of water conservancy projects, and discloses a flood gate which comprises a gate chamber, flashboards, a first buoyancy assembly and a second buoyancy assembly, the multiple flashboards are vertically arranged in the gate chamber, the two ends of each flashboard are movably installed on the inner wall of the gate chamber, the adjacent flashboards abut against each other, and the flashboards have the first state of abutting against each other and the second state of overturning towards a flood control area. The first buoyancy assembly is arranged below the portion, located on one side of the flood control area, of the gate plate, and the second buoyancy assembly is arranged above the portion, located on one side of the flood discharge area, of the gate plate. And when the flood control area encounters flood, all the flashboards rotate to the second state through buoyancy of the first buoyancy assembly arranged on the side of the flood control area, flood discharge is achieved, and therefore automatic adjustment of the flood control gate can be achieved, and manual regulation and control are not needed.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a flood control gate. Background Art

[0002] With the acceleration of social development and urban construction, the importance of urban flood control, waterlogging prevention and water level regulation has become increasingly prominent. In recent years, the global extreme weather has increased, especially if the impact of floods not only affects people's lives and property, but also has a huge impact on agricultural production. In order to effectively control or reduce the impact of flood disasters, flood control facilities are usually built to achieve flood control. Among them, flood gates are one of the most important buildings in this type of facilities and are widely used in rivers, lakes, estuaries and flood control embankments. Through the reasonable scheduling and operation of flood gates, water levels and flows can be adjusted to greatly reduce the damage caused by flood disasters.

[0003] In the existing technology, traditional flood control gates generally adopt several forms such as flat steel gates, arc gates and miter gates, which are generally equipped with electric gate operators for opening and closing. Small gates are opened and closed manually. There are problems such as inaccurate manual control time of the gates and long opening and closing time. Summary of the invention

[0004] In view of this, the present invention provides a flood control gate to solve the problems of inaccurate manual control time and long opening and closing time of the flood control gate in the prior art.

[0005] The present invention provides a flood control gate, comprising a gate chamber, a gate plate, a first buoyancy component and a second buoyancy component. The gate chamber is suitable for being arranged in a water area, and the two sides of the gate chamber are respectively a flood control area and a flood discharge area. The interior of the gate chamber is an installation cavity, and a plurality of gate plates are vertically arranged in the gate chamber. Both ends of the gate plates are movably installed on the inner wall of the gate chamber, and adjacent gate plates are abutted against each other. The gate plates have a first state of abutting against each other and a second state of flipping toward the flood control area. The first buoyancy component is arranged below the gate plate on the side of the flood control area, and the second buoyancy component is arranged above the gate plate on the side of the flood discharge area.

[0006] Beneficial effect: When the water level in the flood discharge area is high, the buoyancy generated by the second buoyancy assembly arranged on the flood discharge area side is used to generate a torque on the gate plate, which is used to resist other external forces such as water pressure and keep each gate plate in the first state. When the flood control area encounters a flood, the buoyancy of the first buoyancy assembly arranged on the flood control area side is used to rotate each gate plate to the second state to discharge the flood, thereby realizing automatic adjustment of the flood control gate without the need for human control, and has the advantages of accurate control and short opening and closing time.

[0007] In an optional embodiment, the first buoyancy assembly includes a first connecting rod and a first buoyancy box. The first connecting rod is in the shape of an "I". One end of the first connecting rod is fixed below the gate plate on the flood control area side, and the first buoyancy box is connected to the end of the first connecting rod away from the gate plate.

[0008] In an optional embodiment, the second buoyancy assembly includes a second connecting rod and a second buoyancy box, the second connecting rod is "L" shaped, one end of the second connecting rod is fixed above the gate plate on the flood discharge area side, and the second buoyancy box is connected to the end of the second connecting rod away from the gate plate.

[0009] Beneficial effect: The present invention sets the position of the second connecting rod to be higher than the first connecting rod. When the water level in the flood discharge area is higher than that in the flood control area, the second buoyancy box generates a torque on the gate plate under the action of buoyancy, which is used to resist other external forces such as water pressure and keep each gate plate in a closed state.

[0010] In an optional embodiment, the flood control gate further includes a rotating shaft, a mounting hole is provided in the middle of the gate plate, the rotating shaft is rotatably mounted in the mounting hole, and both ends of the rotating shaft are mounted on the inner wall of the gate chamber.

[0011] In an optional implementation, a bearing is installed in the installation hole, and the rotating shaft is rotatably installed in the bearing.

[0012] Beneficial effect: The present invention installs the rotating shaft in the bearing, which can not only improve the supporting force of the rotating shaft, but also reduce the friction between the rotating shaft and the gate plate, thereby realizing the rapid rotation of the gate plate.

[0013] In an optional embodiment, a sill is provided on the bottom wall of the gate chamber, and the bottom of the gate plate located at the bottom abuts against the sill.

[0014] Beneficial effect: The present invention arranges a sill on the bottom wall of the gate chamber. When the gate plate is in the first state, the bottom of the gate plate at the bottom abuts against the sill, which limits the gate plate and keeps the gate plate in the first state.

[0015] In an optional embodiment, a first limiting groove is provided at the top of the gate plate, the first limiting groove is located in the flood control area, a second limiting groove is provided at the bottom of the gate plate, the second limiting groove is located in the flood discharge area, the first limiting groove on adjacent gate plates abuts against the second limiting groove, and the second limiting groove at the end abuts against the sill.

[0016] Beneficial effect: In the present invention, the first limiting groove is set on the flood control area side, and the second limiting groove is set on the flood discharge area side. When the first limiting groove and the second limiting groove on adjacent gate plates abut against each other, the gate plates can be kept in the first state.

[0017] In an optional embodiment, the flood control gate further includes a first sealing member, which is disposed on the top of the gate plate and abuts against the bottom of an adjacent gate plate.

[0018] Beneficial effects: The present invention arranges the first sealing member on the top of the gate plate, which can improve the sealing between adjacent gate plates, ensure that no leakage occurs on the flood side under various water level conditions, and ensure the safety of the flood control area.

[0019] In an optional embodiment, the flood control gate further comprises a second sealing member, the second sealing member is arranged below the end gate plate, and the second sealing member abuts against the bottom wall of the gate chamber.

[0020] Beneficial effect: The present invention arranges a second seal at the bottom of the end gate plate, which can improve the sealing between the gate plate and the sill, ensure that flood water does not leak at the abutment between the sill and the gate plate, and ensure the safety of the flood control area.

[0021] In an optional embodiment, the flood control gate further includes a third sealing member, two third sealing members are respectively arranged on both sides of the gate plate, and the third sealing members abut against the inner wall of the gate chamber.

[0022] Beneficial effect: The present invention arranges the third sealing member on both sides of the gate plate, which can improve the sealing between the gate plate and the side wall of the gate chamber, ensure that the flood does not leak on the side of the gate plate, and ensure the safety of the flood control area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the internal three-dimensional structure of a flood control gate according to an embodiment of the present invention;

[0025] Figure 2 A longitudinal cross-sectional view of a flood control gate according to an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the three-dimensional structure of a gate plate in a flood control gate according to an embodiment of the present invention;

[0027] Figure 4 is a cross-sectional view of a flood control gate according to an embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the installation of a first sealing member in a flood control gate according to an embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the installation of a second sealing member in a flood control gate according to an embodiment of the present invention;

[0030] Figure 7The present invention is a schematic diagram of the installation of a third sealing member in a flood control gate according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Lock chamber; 101. Retaining sill; 2. Flood control area; 3. Flood discharge area; 4. Gate; 401. First limiting groove; 402. Second limiting groove; 5. First buoyancy assembly; 501. First connecting rod; 502. First buoyancy box; 6. Second buoyancy assembly; 601. Second connecting rod; 602. Second buoyancy box; 7. Rotating shaft; 8. Bearing; 9. First sealing member; 10. Second sealing member; 11. Third sealing member. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0034] In some residential areas and areas with important industrial and agricultural facilities, once floods occur, it will cause incalculable losses. In related technologies, common flood gates need to be manually regulated, and it is difficult to accurately schedule the gates. There are mainly two situations. One is that if the flood control area encounters water accumulation, it needs to be discharged in time. If the gate opening time is delayed, the flood control area may cause further losses; the second is that if the outer river channel encounters floods, if the gate is opened too early, it will cause floods to invade the flood control area, which will also cause losses. Therefore, the regulation of flood gates needs to be further refined, or a method of automatic regulation needs to be studied. For example, in some coastal areas, seawater backflow during high tide causes soil salinization, and relevant tide-blocking buildings need to be built to prevent such impacts.

[0035] Combine the following Figures 1 to 7 , describing an embodiment of the present invention.

[0036] According to an embodiment of the present invention, Figures 1 to 7 As shown, a flood control gate is provided, including a gate chamber 1, a gate plate 4, a first buoyancy assembly 5 and a second buoyancy assembly 6. The gate chamber 1 is suitable for being set in a water area, and the gate chamber 1 has a flood control area 2 and a flood discharge area 3 on both sides respectively. The gate chamber 1 has an installation cavity inside, and a plurality of gate plates 4 are vertically arranged in the gate chamber 1. Both ends of the gate plates 4 are movably installed on the inner wall of the gate chamber 1, and adjacent gate plates 4 are abutted against each other. The gate plates 4 have a first state of abutting against each other and a second state of flipping toward the flood control area 2. The first buoyancy assembly 5 is arranged below the gate plate 4 on the side of the flood control area 2, and the second buoyancy assembly 6 is arranged above the gate plate 4 on the side of the flood discharge area 3.

[0037] Specifically, in this embodiment, there is no specific limitation on the applicable scenarios of the flood control gates. For example, the flood control gates can be used in rivers, lakes, estuaries, flood control embankments and other locations.

[0038] In this embodiment, the gate chamber 1 is in the shape of a "gate", with gate piers on both sides of the gate chamber 1, a bottom plate is provided between the bottoms of the two gate piers, an installation cavity is formed between the gate piers and the bottom plate, and the gate chamber 1 is cast by concrete.

[0039] In this embodiment, the gate plate 4 is not specifically limited. For example, in this embodiment, the gate plate 4 is made of a rectangular steel plate. Figure 1 and Figure 2 As shown, a plurality of gate plates 4 are connected end to end and vertically arranged between two gate piers, the middle parts of both ends of the gate plates 4 are rotatably connected to the gate piers, and the gate plates 4 can only be flipped toward one side of the flood discharge area 3, the bottom of the gate plate 4 located at the top abuts against the top of the gate plate 4 located at the bottom, and the bottom end of the gate plate 4 located at the bottom abuts against the bottom plate, and each gate plate 4 has a first state of abutting against each other and a second state of flipping toward the flood control area 2. In this embodiment, the height of a single gate plate 4 and the number of gate plates 4 can be adjusted according to actual needs.

[0040] In this embodiment, Figures 1 to 4 As shown, the first buoyancy assembly 5 is arranged below the gate plate 4 on the side of the flood control area 2, and the second buoyancy assembly 6 is arranged above the gate plate 4 on the side of the flood discharge area 3. The installation position of the second buoyancy assembly 6 is higher than the installation position of the first buoyancy assembly 5.

[0041] In this embodiment, when the water level in the flood discharge area 3 is higher than the water level in the flood control area 2, the buoyancy generated by the second buoyancy assembly 6 generates a torque at the rotation point of the gate plate 4, which is used to resist other external forces such as water pressure to keep the gate closed, and ensure that each gate plate 4 is in the first state; when the flood control area 2 encounters a flood, the water level in the flood control area 2 rises, and the water level in the flood control area 2 is higher than the water level in the flood discharge area 3. The buoyancy of the first buoyancy assembly 5 generates a torque at the rotation point of the gate plate 4, causing the gate plate 4 to rotate toward the flood discharge area 3, and each gate plate 4 is in the second state, thereby discharging flood water to the flood control area 2 and reducing the water level in the flood control area 2.

[0042] According to the present invention, when the water level in the flood discharge area 3 is high, the buoyancy generated by the second buoyancy assembly 6 arranged on the side of the flood discharge area 3 is used to generate a torque on the gate plate 4, so as to resist other external forces such as water pressure and keep each gate plate 4 in the first state. When the flood control area 2 encounters a flood, the buoyancy of the first buoyancy assembly 5 arranged on the side of the flood control area 2 is used to rotate each gate plate 4 to the second state to discharge the flood, thereby realizing automatic adjustment of the flood control gate without the need for human control, and having the advantages of accurate control and short opening and closing time.

[0043] In one embodiment, Figures 1 to 4 As shown, the first buoyancy assembly 5 includes a first connecting rod 501 and a first buoyancy box 502. The first connecting rod 501 is in the shape of an "I". One end of the first connecting rod 501 is fixed below the gate plate 4 on the flood control area 2 side, and the first buoyancy box 502 is connected to the end of the first connecting rod 501 away from the gate plate 4.

[0044] Specifically, in this embodiment, the first connecting rod 501 is horizontally arranged between the gate plate 4 and the first pontoon 502. In this embodiment, the first connecting rod 501 is not specifically limited. For example, in this embodiment, the material of the first connecting rod 501 is stainless steel, the connection point of the first connecting rod 501 is welded to the gate plate 4, and the bottom of the first pontoon 502 at the end is flush with the bottom plate of the gate chamber 1, ensuring that all the accumulated water in the flood control area 2 can be discharged.

[0045] In one embodiment, Figures 1 to 4 As shown, the second buoyancy assembly 6 includes a second connecting rod 601 and a second buoyancy box 602. The second connecting rod 601 is "L" shaped. One end of the second connecting rod 601 is fixed above the gate plate 4 on the flood discharge area 3 side. The second buoyancy box 602 is connected to the end of the second connecting rod 601 away from the gate plate 4.

[0046] Specifically, in this embodiment, the second connecting rod 601 is in an "L" shape, and the second connecting rod 601 includes a horizontal section and a vertical section, one end of the horizontal section is fixed above the gate plate 4, and the other end is connected to the top of the vertical section, and the second buoyancy box 602 is fixed to the bottom of the vertical section. In this embodiment, the second connecting rod 601 is not specifically limited. For example, in this embodiment, the material of the second connecting rod 601 is stainless steel, and the connection point of the second connecting rod 601 is connected to the gate plate 4 by welding.

[0047] In this embodiment, the torque generated by the first buoyancy box 502 and the second buoyancy box 602 at the rotating shaft 7 is greater than the sum of the torques generated by the water pressure and the friction force at the rotating shaft 7, thereby ensuring that the gate plate 4 can be rotated to open and close under the action of buoyancy.

[0048] In this embodiment, the number of the first buoyancy assembly 5 and the second buoyancy assembly 6 can be adjusted according to aesthetic requirements or stress conditions, and the length of the first connecting rod 501 and the second connecting rod 601 can be adjusted according to the stress conditions.

[0049] The present invention sets the position of the second connecting rod 601 to be higher than the first connecting rod 501. When the water level in the flood discharge area 3 is higher than that in the flood control area 2, the second buoyancy box 602 generates a torque on the gate plate 4 under the action of buoyancy, which is used to resist other external forces such as water pressure and keep each gate plate 4 in a closed state.

[0050] In one embodiment, Figure 3 and Figure 7As shown, the flood control gate also includes a rotating shaft 7. A mounting hole is provided in the middle of the gate plate 4. The rotating shaft 7 is rotatably mounted in the mounting hole. Both ends of the rotating shaft 7 are mounted on the inner wall of the gate chamber 1.

[0051] Specifically, in this embodiment, a through mounting hole perpendicular to the water flow direction is provided in the middle of the gate plate 4, and the rotating shaft 7 is nested in the mounting hole. The rotating shaft 7 is the main force-bearing component of the gate plate 4, and both ends of the rotating shaft 7 are installed on the inner wall of the gate pier.

[0052] In one embodiment, Figure 4 As shown, a bearing 8 is installed in the installation hole, and the rotating shaft 7 is rotatably installed in the bearing 8.

[0053] Specifically, in this embodiment, a bearing 8 is installed at each end of the mounting hole on the gate plate 4, and the rotating shaft 7 is inserted into the bearing 8, which can ensure that the gate plate 4 can rotate flexibly around the rotating shaft 7. The two ends of the rotating shaft 7 extend into the gate pier of the gate chamber 1 and are fixed, and can be pre-buried in the gate pier. In this embodiment, the bearing 8 is not specifically limited. For example, in this embodiment, the bearing 8 is a ball bearing 8.

[0054] The present invention installs the rotating shaft 7 in the bearing 8, which can not only improve the supporting force of the rotating shaft 7, but also reduce the friction between the rotating shaft 7 and the gate plate 4, so that the gate plate 4 can rotate quickly.

[0055] In one embodiment, Figure 2 and Figure 7 As shown, a sill 101 is provided on the inner bottom wall of the gate chamber 1 , and the bottom of the gate plate 4 located at the bottom abuts against the sill 101 .

[0056] Specifically, in this embodiment, a sill 101 is provided on the top of the inner bottom wall of the gate chamber 1. In this embodiment, the sill 101 is not specifically limited. For example, in this embodiment, the sill 101 is a reinforced concrete structure, which is cast integrally with the gate chamber 1. The bottom of the gate plate 4 at the end is abutted against the side of the sill 101 located in the flood control area 2, ensuring that the bottom gate plate 4 can be opened in one direction.

[0057] The present invention sets a sill 101 on the bottom wall of the gate chamber 1. When the gate plate 4 is in the first state, the bottom of the gate plate 4 at the bottom abuts against the sill 101, which limits the gate plate 4 and keeps the gate plate 4 in the first state.

[0058] In one embodiment, Figure 4 As shown, a first limiting groove 401 is provided at the top of the gate plate 4, and the first limiting groove 401 is located in the flood control area 2. A second limiting groove 402 is provided at the bottom of the gate plate 4, and the second limiting groove 402 is located in the flood discharge area 3. The first limiting groove 401 on adjacent gate plates 4 abuts against the second limiting groove 402, and the second limiting groove 402 at the end abuts against the sill 101.

[0059] Specifically, in this embodiment, the top end of the gate plate 4 is located in the flood control area 2 and is provided with a first limiting groove 401, and the bottom end of the gate plate 4 is located in the flood discharge area 3 and is provided with a second limiting groove 402. When the adjacent gate plates 4 are in the first state, the first limiting groove 401 abuts against the second limiting groove 402. The thickness of the first limiting groove 401 and the second limiting groove 402 is half of the thickness of the gate plate 4. When each gate plate 4 is in the first state, the two sides of each gate plate 4 are flush in the vertical plane.

[0060] In the present invention, the first limiting groove 401 is arranged on the side of the flood control area 2, and the second limiting groove 402 is arranged on the side of the flood discharge area 3. When the first limiting groove 401 and the second limiting groove 402 on the adjacent gate plates 4 abut against each other, the gate plates 4 can be kept in the first state.

[0061] In one embodiment, Figure 5 As shown, the flood control gate further includes a first seal 9 , which is disposed on the top of the gate plate 4 , and the first seal 9 abuts against the bottom of the adjacent gate plate 4 .

[0062] Specifically, in this embodiment, except for the gate plate 4 at the top, a first sealing member 9 is disposed on the top of the other gate plates 4 , and the first sealing member 9 abuts against the second limiting groove 402 on the gate plate 4 above it.

[0063] The present invention provides a first sealing member 9 on the top of the gate plate 4 to improve the sealing between adjacent gate plates 4, ensuring that no leakage occurs on the flood side under various water level conditions, thereby ensuring the safety of the flood control area 2.

[0064] In one embodiment, Figure 6 As shown, the flood control gate further includes a second sealing member 10 , which is disposed below the end gate plate 4 , and the second sealing member 10 abuts against the inner bottom wall of the gate chamber 1 .

[0065] Specifically, in this embodiment, the second sealing member 10 is disposed below the end gate plate 4 on the flood discharge area 3 side and above the second limiting groove 402 , and the second sealing member 10 abuts against the top of the sill 101 .

[0066] The present invention provides a second sealing member 10 at the bottom of the end gate plate 4 to improve the sealing between the gate plate 4 and the sill 101 , thereby ensuring that flood water does not leak at the junction of the sill 101 and the gate plate 4 , thereby ensuring the safety of the flood control area 2 .

[0067] In one embodiment, Figure 7 As shown, the flood control gate further includes a third sealing member 11 . Two third sealing members 11 are respectively arranged on both sides of the gate plate 4 , and the third sealing members 11 abut against the inner wall of the gate chamber 1 .

[0068] Specifically, in this embodiment, the first seal 9, the second seal 10 and the third seal 11 are not specifically limited. For example, in this embodiment, the first seal 9, the second seal 10 and the third seal 11 are rubber water stop strips.

[0069] The present invention arranges third sealing members 11 on both sides of the gate plate 4 to improve the sealing between the gate plate 4 and the side wall of the gate chamber 1 , ensuring that flood water does not leak on the side of the gate plate 4 and ensuring the safety of the flood control area 2 .

[0070] In this embodiment, after the gate pier steel bar template of the gate chamber 1 is installed and before the concrete is poured, a truck crane is used to insert the rotating shaft 7 installed in the gate plate 4 into the opening position in the middle of the gate chamber 1. During installation, the gate plate 4 is first hoisted as a whole to the specified position, and then the two ends of the rotating shaft 7 are inserted into the gate pier steel bars and fixed, and finally the gate pier is poured with concrete.

[0071] In this embodiment, after the first connecting rod 501 and the first buoyancy box 502 as well as the second connecting rod 601 and the second buoyancy box 602 are assembled in the construction site, an aerial work vehicle is used to send the installation workers to the installation location, and a car crane is used to lift the assembled first buoyancy assembly 5 and the second buoyancy assembly 6 to the installation workers. The installation workers use a welding machine to fully weld the first connecting rod 501 and the second connecting rod 601 to the gate plate 4. After welding, the same anti-corrosion paint as the gate plate 4 is applied; the first seal 9, the second seal 10 and the third seal 11 are installed in the same manner as above.

[0072] In this embodiment, the gate maintenance should be carried out during the dry season when the water level on both sides of the gate is low or there is no water. The maintenance personnel are transported to the designated location by an aerial work vehicle to carry out maintenance work such as replacement of the first seal 9, the second seal 10 and the third seal 11, and application of anti-corrosion paint.

[0073] The flood control gate provided by the present invention has a simple structure, low cost and low operating cost, can ensure that the flood control area 2 is free of water under various water level conditions, and can realize automatic adjustment of the flood control gate without the need for human control. The buoyancy boxes on both sides of the gate plate 4 are used to drive the gate plate 4 to rotate around the rotating shaft 7 according to different water level conditions to realize the opening and closing of the gate plate 4.

[0074] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A flood control gate, characterized in that: include: A lock chamber (1), wherein the lock chamber (1) is suitable for being arranged in a water area, the two sides of the lock chamber (1) are respectively a flood control area (2) and a flood discharge area (3), and the interior of the lock chamber (1) is an installation cavity; Gate plates (4), a plurality of gate plates (4) are vertically arranged in the gate chamber (1), two ends of the gate plates (4) are movably mounted on the inner wall of the gate chamber (1), adjacent gate plates (4) are abutted against each other, and the gate plates (4) have a first state of abutting against each other and a second state of turning over toward the flood control area (2); A first buoyancy assembly (5), the first buoyancy assembly (5) being arranged below the gate plate (4) on one side of the flood control area (2); A second buoyancy component (6), the second buoyancy component (6) is arranged above the gate plate (4) on one side of the flood discharge area (3).

2. The flood gate according to claim 1, characterized in that: The first buoyancy component (5) comprises: A first connecting rod (501), the first connecting rod (501) is in the shape of a letter "I", and one end of the first connecting rod (501) is fixed below the gate plate (4) on the side of the flood control area (2); A first buoyancy box (502), wherein the first buoyancy box (502) is connected to an end of the first connecting rod (501) away from the gate plate (4).

3. The flood gate according to claim 1 or 2, characterized in that: The second buoyancy assembly (6) comprises: A second connecting rod (601), the second connecting rod (601) is in an "L" shape, and one end of the second connecting rod (601) is fixed above the gate plate (4) on the flood discharge area (3) side; A second buoyancy box (602), wherein the second buoyancy box (602) is connected to an end of the second connecting rod (601) away from the gate plate (4).

4. The flood gate according to claim 1, characterized in that: Also includes: A rotating shaft (7) is provided with a mounting hole in the middle of the gate plate (4), the rotating shaft (7) is rotatably mounted in the mounting hole, and both ends of the rotating shaft (7) are mounted on the inner wall of the gate chamber (1).

5. The flood gate according to claim 4, characterized in that: A bearing (8) is installed in the installation hole, and the rotating shaft (7) is rotatably installed in the bearing (8).

6. The flood gate according to claim 1, characterized in that: The inner bottom wall of the gate chamber (1) is provided with a barrier sill (101), and the bottom of the gate plate (4) located at the bottom abuts against the barrier sill (101).

7. The flood gate according to claim 6, characterized in that: The top of the gate plate (4) is provided with a first limiting groove (401), the first limiting groove (401) is located in the flood control area (2), the bottom of the gate plate (4) is provided with a second limiting groove (402), the second limiting groove (402) is located in the flood discharge area (3), the first limiting groove (401) and the second limiting groove (402) on adjacent gate plates (4) are in contact with each other, and the second limiting groove (402) at the end is in contact with the sill (101).

8. The flood gate according to claim 1, characterized in that: Also includes: A first sealing member (9), wherein the first sealing member (9) is arranged on the top of the gate plate (4), and the first sealing member (9) abuts against the bottom of an adjacent gate plate (4).

9. The flood gate according to claim 1, characterized in that: Also includes: A second sealing member (10), wherein the second sealing member (10) is arranged below the gate plate (4) at the end, and the second sealing member (10) abuts against the inner bottom wall of the gate chamber (1).

10. The flood gate according to claim 1, characterized in that: Also includes: A third sealing member (11), wherein two third sealing members (11) are respectively arranged on both sides of the gate plate (4), and the third sealing members (11) are in contact with the inner wall of the gate chamber (1).

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