Anti-backflow flood control and drainage well lid

Abstract

The utility model discloses an anti-backflow flood control and drainage well lid, relates to the related field of well lids, and aims to solve the problems of unsmooth drainage and backflow of rainwater in rainstorm seasons when the drainage amount is sharply increased in the prior art. A lower base is arranged at the lower end of the interior of the installation well ring, an inner arc-shaped drainage hole groove is formed in the lower end face of the lower base in a penetrating mode, a water accumulation cavity is formed in the installation well ring and the lower base, and a backflow prevention assembly is arranged in the installation well ring and comprises a floating sealing disc which is located in the water accumulation cavity. A connecting stand column is fixed to the lower end of the floating sealing disc, the lower end of the connecting stand column penetrates through the inner arc-shaped drainage hole groove to be fixedly provided with a circular-truncated-cone-shaped sealing piece, the middle of the circular-truncated-cone-shaped sealing piece is matched with the inner arc-shaped drainage hole groove in shape, and the diameter of the connecting stand column is smaller than the minimum diameter of the inner arc-shaped drainage hole groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of well lid is directly related to a kind of flood control and drainage well lid of anti backflow. BACKGROUND

[0002] In the process of urbanization accelerates unceasingly today, city drainage system as the important component of city infrastructure, its performance is directly related to the flood control and drainage capacity of city and the quality of life of resident. Traditional well lid, it is made of cast iron or composite material more, main function is to cover and protect underground drainage pipeline, simultaneously prevent pedestrian or vehicle from entering into water well, cause safety accident.

[0003] For example, the China authorized patent (a waterproof composite well lid) with the announcement number CN 205776378 U includes well lid, well lid base, well lid is installed on well lid base, the inner side wall of well lid base is the ladder type structure of first step and second step, the well lid includes upper well lid, lower well lid, the edge of upper well lid is equipped with positioning plate, first step is equipped with the positioning groove compatible with positioning plate, lower well lid is pressed into shape using glass steel, positioning hole is equipped on lower well lid, positioning hole is equipped with concave ring groove, first sealing ring is equipped in concave ring groove.

[0004] But in storm season, when drainage capacity increases sharply, drainage is not smooth, rainwater backflow phenomenon can occur. Therefore, a flood control and drainage well lid capable of effectively preventing backflow is needed, which needs to have stronger backflow prevention ability while ensuring drainage efficiency. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of flood control and drainage well lid of anti backflow to solve the problem that rainwater backflow in storm season when drainage capacity increases sharply in the background art described above.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of flood control and drainage well lid of anti backflow, including installation well ring, the lower end of the inside of installation well ring is provided with lower base, the lower end surface of lower base is opened in arc-shaped drainage hole slot, the installation well ring and lower base form water accumulation cavity, the installation well ring is provided with anti backflow assembly, the anti backflow assembly includes floating sealing disc, floating sealing disc is located in water accumulation cavity, the lower end of floating sealing disc is fixed with connection column, the lower end of connection column is fixed with circular truncated cone sealing piece through arc-shaped drainage hole slot, circular truncated cone sealing piece middle part is consistent with the shape of arc-shaped drainage hole slot, the diameter of connection column is less than the minimum diameter of arc-shaped drainage hole slot.

[0007] Preferably, the lower end of the inner surface of the installation well circle is provided with a second step, the outer end of the lower base is integrally connected with a fixed outer edge, the fixed outer edge is arranged on the upper end of the second step, the inner surface of the installation well circle is provided with a first step along the upper end of the second step, and the installation well circle is provided with an installation cover along the upper end of the first step.

[0008] Preferably, the installation cover is provided with a water inlet hole slot, and the floating sealing disc is provided with a water inlet hole slot along the outer part of the connecting column.

[0009] Preferably, the floating sealing disc is fixedly provided with a sealing pad at a position corresponding to the water inlet hole slot, the upper end of the sealing pad is fixedly provided with an upper clamping block, and the upper clamping block is matched with the shape of the water inlet hole slot.

[0010] Preferably, the inner surface of the installation well circle is provided with a rotating groove in an annular array between the first step and the second step, a rotating clamping hook is rotatably connected in the rotating groove through a shaft, a pressure spring is fixed between the rotating clamping hook and the inner wall of the installation well circle, a clamping groove is formed in the lower end surface of the installation cover along the rotating track of the rotating clamping hook, and the rotating clamping hook is clamped in the clamping groove.

[0011] Preferably, the inner end surface of the lower base is fixedly provided with a limiting vertical rod in an annular array along the outer part of the inner arc-shaped drainage hole slot, the floating sealing disc is provided with a limiting hole slot at a position corresponding to the limiting vertical rod, and the limiting hole slot of the floating sealing disc slides along the limiting vertical rod.

[0012] Preferably, the outer surface of the circular truncated cone sealing element is fixedly provided with a sealing layer.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) In the utility model, the floating and sealing effects of the floating sealing disc and the circular truncated cone sealing element can automatically close the drainage channel when the water level of the underground pipe network system rises due to heavy rain, prevent rainwater from flowing back, and effectively guarantee the safe operation of the urban drainage system.

[0015] (2) In the utility model, the inner arc-shaped drainage hole slot ensures smooth drainage of rainwater under normal conditions, but under the condition that the water level rises, the circular truncated cone sealing element and the sealing layer outside the circular truncated cone sealing element are gradually clamped in the inner arc-shaped drainage hole slot, closing the flow of the water body between the well cover and the underground pipe network system; at the same time, the sealing pad and the upper clamping block are arranged, further enhancing the sealing performance of the well cover and preventing rainwater from seeping from the gap.

[0016] (3) In this utility model, when there is heavy rainfall, the water level gradually rises. The upward pressure of the floating sealing disc drives the rotating hook to rotate upward. The upward rotation of the rotating hook will lock into the slot of the installation cover, realizing the automatic locking and stabilization of the installation cover, reducing the instability of the manhole cover during heavy rain. Moreover, through the cooperation of the rotating hook and the pressure spring, it can automatically reset after the water level drops, without the need for manual intervention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a flood control and drainage manhole cover for preventing backflow, based on the main view of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall structure of a flood control and drainage manhole cover for preventing backflow, as viewed from below.

[0019] Figure 3 This is a cross-sectional view of a flood control and drainage well cover for preventing backflow according to this utility model;

[0020] Figure 4 This is a schematic diagram of the installation ring of a flood control and drainage well cover that prevents backflow, according to this utility model.

[0021] Figure 5 This is a schematic diagram of the installation body of a flood control and drainage well cover for preventing backflow according to this utility model;

[0022] Figure 6 This is a schematic diagram of the lower base of a flood control and drainage well cover for preventing backflow, according to the present invention.

[0023] Figure 7 This is a schematic diagram of the anti-backflow component of a flood control and drainage well cover according to the present invention.

[0024] In the diagram: 1. Installation well ring; 2. First step edge; 3. Second step edge; 4. Rotating groove; 5. Rotating hook; 6. Pressure spring; 7. Installation cover; 8. Water inlet groove; 9. Slot; 10. Lower base; 11. Fixed outer edge; 12. Inner arc-shaped drainage hole groove; 13. Limiting upright; 14. Water accumulation chamber; 15. Anti-backflow component; 16. Floating sealing disc; 17. Water passage groove; 18. Limiting hole groove; 19. Upper locking block; 20. Sealing gasket; 21. Connecting column; 22. Frustum-shaped seal; 23. Sealing layer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please seeFigures 1-7 The utility model provides an embodiment provided by the utility model:

[0027] (1) the whole structure design of well lid:

[0028] The lower end of the installation well ring 1 is provided with a lower base 10, and an inner arc-shaped drainage hole groove 12 is formed in the lower end surface of the lower base 10, which is used for normal drainage.

[0029] The installation well ring 1 and the lower base 10 form a water accumulation cavity 14, which is used for temporarily storing water. The design of the water accumulation cavity provides necessary space for the anti-backflow related structure.

[0030] The lower end of the inner surface of the installation well ring 1 is provided with a second step along 3, and the outer end of the lower base 10 is integrally connected with a fixed outer edge 11, which is arranged on the upper end of the second step along 3 to achieve stable placement. The upper end of the installation well ring 1 along the first step along 2 is provided with an installation cover body 7, and a water inlet hole groove 8 is formed in the installation cover body 7, which is a channel for rainwater to enter the water accumulation cavity 14, ensuring smooth entry of rainwater.

[0031] (2) Anti-backflow assembly, as shown in Figures 1-3 、 Figure 6 and Figure 7 :

[0032] The water accumulation cavity 14 is provided with an anti-backflow assembly 15, which comprises a floating sealing disc 16. The floating sealing disc 16 is located in the water accumulation cavity 14 and rises with the rise of water level, which can respond to water level changes in real time and realize automatic anti-backflow.

[0033] The lower end of the floating sealing disc 16 is fixedly connected with a connecting column 21, and the diameter of the connecting column 21 is smaller than the minimum diameter of the inner arc-shaped drainage hole groove 12. The lower end of the connecting column 21 is fixedly connected with a circular truncated cone sealing element 22 through the inner arc-shaped drainage hole groove 12. The middle part of the circular truncated cone sealing element 22 is matched with the shape of the inner arc-shaped drainage hole groove 12, and the circular truncated cone sealing element 22 can gradually be clamped into the inner arc-shaped drainage hole groove 12 with the rise of water level, so as to realize the closing of the drainage channel.

[0034] The outer surface of the circular truncated cone sealing element 22 is fixedly connected with a sealing layer 23, which further improves the sealing effect between the circular truncated cone sealing element and the inner arc-shaped drainage hole groove, preventing rainwater from seeping.

[0035] A water passage groove 17 is formed in the outer part of the connecting column 21 of the floating sealing disc 16, which is used for normal drainage, and the floating sealing disc will not hinder the drainage of rainwater during the rising process.

[0036] A sealing pad 20 is fixedly connected with the water inlet hole groove 8 at the corresponding position of the upper end of the floating sealing disc 16, and the upper end of the sealing pad 20 is fixedly connected with an upper clamping block 19, which enhances the sealing performance of the well lid and prevents rainwater from seeping in.

[0037] The inner end surface of the lower base 10 is fixed with a limiting vertical rod 13 along the outer annular array of the inner arc-shaped drainage hole groove 12, and a limiting hole groove 18 is formed in the floating sealing disc 16 at a position corresponding to the limiting vertical rod 13. The cooperation of the limiting vertical rod and the limiting hole groove limits the movement track of the floating sealing disc, and ensures the stable operation of the anti-backflow assembly.

[0038] (3) The rotating hook and the clamping groove are shown in Figs. Figure 3 , Figure 4 and Figure 5 .

[0039] The inner surface of the installation well ring 1 is annularly arrayed with a rotating groove 4 between the first step along 2 and the second step along 3, and the rotating hook 5 is rotatably connected in the rotating groove 4 through a shaft. The lower end surface of the installation cover body 7 is annularly arrayed with a clamping groove 9 along the rotating track of the rotating hook 5. The outer part of the floating sealing disc 16 is in contact with the outer inclined surface of the rotating hook 5, and with the continuous upward movement of the anti-backflow assembly 15, the floating sealing disc 16 will press the rotating hook 5 to rotate upward, realizing the automatic locking and stabilization of the installation cover body 7.

[0040] The rotating hook 5 is fixed with a pressure spring 6 between the inner wall of the installation well ring 1, providing a restoring force for the rotating hook.

[0041] Working principle: In the normal use state, rainwater enters the water accumulation cavity 14 through the water inlet hole groove 8 of the installation cover body 7, reaches the lower end of the floating sealing disc 16 through the water passing hole groove 17 on the floating sealing disc 16, and flows downward along the inner arc-shaped drainage hole groove 12 and the connecting vertical column 21.

[0042] When the rainwater is large, the water body in the underground pipe network system cannot be discharged in time, and the water level line gradually rises. Water begins to accumulate in the water accumulation cavity 14. Since the floating sealing disc 16 is a floating structure, with the rising of the water level line, the anti-backflow assembly 15 moves upward along the limiting vertical rod 13. With the upward movement of the anti-backflow assembly 15, the outer part of the floating sealing disc 16 is in contact with the outer inclined surface of the rotating hook 5. With the continuous upward movement of the anti-backflow assembly 15, the center rotating shaft of the rotating hook 5 is located in the rotating groove 4, which will press the rotating hook 5 to rotate upward. The upward rotation of the rotating hook 5 will be clamped in the clamping groove 9 of the installation cover body 7, realizing the automatic locking and stabilization of the installation cover body 7.

[0043] The water level line continues to rise, and the upper clamping block 19 is first clamped into the water inlet hole groove 8 of the installation cover body 7, avoiding the downward flow of the road surface water body. With the continuous rising of the water level line, the circular truncated cone sealing member 22 and the outer sealing layer 23 thereof are gradually clamped in the inner arc-shaped drainage hole groove 12, closing the flow of the water body between the well cover and the underground pipe network system, and preventing the backflow of rainwater.

[0044] When the water level line drops, the buoyancy of the water body to the anti-inrush assembly 15 is weakened, the anti-inrush assembly 15 moves downward, the circular-truncated-cone-shaped sealing member 22 is not completely clamped in the inner arc-shaped drain hole groove 12, the water body can flow downward, and under the action of the pressure spring 6, the rotating clasp 5 resets.

[0045] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A flood control and drainage well cover for preventing backflow, comprising a well ring (1), characterized in that: The lower end of the mounting well ring (1) is provided with a lower base (10). The lower end face of the lower base (10) is provided with an inner arc-shaped drainage hole groove (12). The mounting well ring (1) and the lower base (10) form a water accumulation cavity (14). The mounting well ring (1) is provided with an anti-backflow component (15). The anti-backflow component (15) includes a floating sealing disc (16). The floating sealing disc (16) is located in the water accumulation cavity (14). The lower end of the floating sealing disc (16) is fixed with a connecting column (21). The lower end of the connecting column (21) passes through the inner arc-shaped drainage hole groove (12) and is fixed with a frustum-shaped seal (22). The middle part of the frustum-shaped seal (22) matches the shape of the inner arc-shaped drainage hole groove (12). The diameter of the connecting column (21) is smaller than the minimum diameter of the inner arc-shaped drainage hole groove (12).

2. A flood control and drainage well cover for preventing backflow as described in claim 1, characterized in that: The lower end of the inner surface of the mounting well ring (1) is provided with a second step edge (3), and the upper end of the outer side of the lower base (10) is integrally connected with a fixed outer edge (11). The fixed outer edge (11) rests on the upper end of the second step edge (3). The upper end of the inner surface of the mounting well ring (1) along the second step edge (3) is provided with a first step edge (2), and the upper end of the inner surface of the mounting well ring (1) along the first step edge (2) is provided with a mounting cover (7).

3. A flood control and drainage well cover for preventing backflow as described in claim 2, characterized in that: The mounting cover (7) is provided with a water inlet groove (8), and the floating sealing disc (16) is provided with a water passage groove (17) along the outside of the connecting column (21).

4. A flood control and drainage well cover for preventing backflow as described in claim 3, characterized in that: A sealing pad (20) is fixed at the upper end of the floating sealing disc (16) at a position corresponding to the water inlet groove (8). An upper locking block (19) is fixed at the upper end of the sealing pad (20), and the upper locking block (19) matches the shape of the water inlet groove (8).

5. A flood control and drainage well cover for preventing backflow as described in claim 2, characterized in that: The inner surface of the mounting well ring (1) is provided with a rotating groove (4) arranged in an annular array between the first step edge (2) and the second step edge (3). A rotating hook (5) is rotatably connected to the rotating groove (4) via a shaft. A pressure spring (6) is fixed between the rotating hook (5) and the inner wall of the mounting well ring (1). The lower end face of the mounting cover (7) is provided with a slot (9) along the rotation trajectory of the rotating hook (5). The rotating hook (5) rotates and is locked in the slot (9).

6. A flood control and drainage well cover for preventing backflow as described in claim 1, characterized in that: The lower base (10) has a limit rod (13) fixed in a ring array on the inner end face of the inner arc-shaped drainage hole groove (12). The floating sealing plate (16) has a limit hole groove (18) at the position corresponding to the limit rod (13). The floating sealing plate (16) slides along the limit rod (13) with the limit hole groove (18) in a limited position.

7. A flood control and drainage well cover for preventing backflow as described in claim 1, characterized in that: A sealing layer (23) is fixed on the outer surface of the frustum-shaped seal (22).

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