Well lid capable of automatically draining water and preventing backflow

Abstract

The utility model discloses an automatic drainage and anti-backflow well lid, which relates to the technical field of well lids and comprises a base, a well lid is movably mounted in the base, a well wall is fixedly mounted at the bottom of the base, and a filter component is mounted in the well wall. A plurality of through grooves are circumferentially formed in the interior of the well lid at equal intervals, filter screens are fixedly mounted at the tops of the through grooves, movable plates are rotationally mounted on one sides of the interiors of the through grooves, and the movable plates are matched with the through grooves. Rainwater on the ground can penetrate through the well lid through the through groove to enter the well, and the automatic drainage effect of the well lid is achieved. When short-time heavy rainfall occurs and rainwater in a pipe network system cannot be drained in time, the movable plate floats on the water surface through the floating block at the bottom and can move upwards along with the water surface along with rising of the water level below the well lid, after the water level is flush with the bottom of the well lid, the movable plate can seal the through groove, and at the moment, the backward flowing phenomenon cannot occur.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a manhole cover with automatic drainage and anti-backflow functions. Background Art

[0002] A manhole cover is used to cover a road or a deep well at home to prevent people or objects from falling into the well. Manhole covers can be classified into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc. In recent years, with the continuous development of the social economy and the expansion of the urban scale, the construction scale of sewer systems has accelerated accordingly. Therefore, a large number of manhole covers are required, and manhole covers are used in municipal engineering, water conservancy projects, communication projects, etc.

[0003] Most of the existing manhole covers are rotatably installed on manholes, and there is mostly only an opening hole for opening the manhole cover inside the manhole cover, and the opening hole is small. When short-term heavy rainfall occurs, the rainwater inside the pipe network system cannot be discharged in time, and the manhole cover is easily lifted by the water, and the rainwater will flow back into the road surface through the manhole cover, resulting in backflow. This not only causes the accumulated water on the road surface to not be discharged in time, but also increases the amount of accumulated water on the road surface, forming local waterlogging. Therefore, in order to solve the foregoing problems, we propose a manhole cover with automatic drainage and anti-backflow functions. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a manhole cover with automatic drainage and anti-backflow functions.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A manhole cover with automatic drainage and anti-backflow functions, including a base, a manhole cover is movably installed inside the base, a well wall is fixedly installed at the bottom of the base, and a filtering component is installed inside the well wall;

[0007] A plurality of through grooves are equidistantly and circumferentially formed inside the manhole cover, filter nets are fixedly installed at the tops of the plurality of through grooves, and movable plates are rotatably installed on one side inside the plurality of through grooves, and the movable plates are adapted to the through grooves.

[0008] Further, the filtering component includes a partition plate, a mesh cylinder, and an annular groove. The annular groove is fixedly installed at the top of the partition plate. The outer edge of the partition plate abuts against the inner surface of the well wall. A round hole is formed inside the partition plate, and the round hole is located inside the annular groove. The partition plate installs the mesh cylinder through the annular groove.

[0009] Further, convex rings are fixedly installed on the inner sides of the base and the well wall respectively, and the two convex rings are respectively located at the bottoms of the manhole cover and the partition plate.

[0010] Furthermore, floating blocks are fixedly installed at the bottoms of the multiple movable plates.

[0011] Furthermore, a connecting block is fixedly installed on one side of the manhole cover. A bolt is installed in the connecting block in a threaded manner. A connecting groove adapted to the connecting block is formed on one side of the top of the base, and a threaded hole is formed at the bottom of the inner side of the connecting groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] During rain, rainwater on the ground can pass through the through groove through the manhole cover and enter the well, realizing the function of automatic drainage of the manhole cover. The filter screen can prevent sundries from entering the well, and the filtering component can further filter the rainwater to prevent the well passage from being blocked.

[0014] When a short-term heavy rainfall occurs and the rainwater inside the pipe network system cannot be discharged in time, as the water level below the manhole cover rises, the movable plate will float on the water surface through the floating block at the bottom and can move up with the water surface. When the water level is flush with the bottom of the manhole cover, the movable plate will close the through groove, and at this time, backflow cannot occur; after the water level drops, the movable plate will fall, and external rainwater can enter the well through the through groove again. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model.

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is an exploded view of the present utility model;;

[0018] Figure 3 is a three-dimensional view of the manhole cover of the present utility model;

[0019] Figure 4 is an exploded view of the filtering component of the present utility model;

[0020] Figure 5 is a three-dimensional view of the base of the present utility model.

[0021] In the figure: 1, base; 2, manhole cover; 3, filter screen; 4, partition board; 5, mesh cylinder; 6, annular groove; 7, well wall; 8, movable plate; 9, convex ring; 10, floating block; 11, through groove; 12, connecting groove; 13, connecting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model;

[0023] Referring to Figures 1-5 , a manhole cover with automatic drainage and anti-backflow function, including a base 1, a manhole cover 2 is movably installed inside the base 1, a well wall 7 is fixedly installed at the bottom of the base 1, and a filtering component is installed inside the well wall 7; a plurality of through slots 11 are equidistantly and circumferentially opened inside the manhole cover 2, a filter net 3 is fixedly installed at the top of each of the plurality of through slots 11, and a movable plate 8 is rotatably installed on one side inside each of the plurality of through slots 11, and the movable plate 8 is adapted to the through slot 11.

[0024] During rain, the rainwater on the ground can enter the well through the through slot 11 and pass through the manhole cover 1, realizing the function of automatic drainage of the manhole cover 1. The filter net 3 can prevent sundries from entering the well, and the filtering component can further filter the rainwater to avoid blockage of the well passage.

[0025] Floating blocks 10 are fixedly installed at the bottoms of the plurality of movable plates 8.

[0026] When a short-term heavy rainfall occurs and the rainwater inside the pipe network system cannot be discharged in time, as the water level below the manhole cover 1 rises, the movable plate 8 will float on the water surface through the floating block 10 at the bottom and can move up with the water surface. When the water level is flush with the bottom of the manhole cover 1, the movable plate 8 will close the through slot 11, and at this time, backflow phenomenon will not occur; after the water level drops, the movable plate 8 will fall, and the external rainwater can enter the well through the through slot 11 again.

[0027] The filtering component includes a partition plate 4, a mesh cylinder 5, and an annular groove 6. The annular groove 6 is fixedly installed at the top of the partition plate 4. The outer edge of the partition plate 4 abuts against the inner surface of the well wall 7. A round hole is opened inside the partition plate 4, and the round hole is located inside the annular groove 6. The partition plate 4 installs the mesh cylinder 5 through the annular groove 6;

[0028] The top end of the mesh cylinder 5 can abut against the bottom of the manhole cover 1, which can prevent sundries from entering the well through the gap between the mesh cylinder 5 and the manhole cover 1; the rainwater passing through the manhole cover 1 can enter the well through the round hole; the setting of the annular operation 6 can facilitate the disassembly of the mesh cylinder 5, so as to facilitate the cleaning of the mesh cylinder 5.

[0029] Convex rings 9 are fixedly installed on the inner side of the base 1 and the inner side of the well wall 7 respectively, and the two convex rings 9 are respectively located at the bottoms of the manhole cover 2 and the partition plate 4.

[0030] The two convex rings 9 can respectively support the manhole cover 2 and the partition plate 4. The inner diameter of the well wall 7 is smaller than the inner diameter of the base 1. After the manhole cover 2 is opened, the partition plate 4 can be taken out of the well, which is convenient for the staff to enter the well for pipeline maintenance, etc.

[0031] One side of the manhole cover 2 is fixedly installed with a connecting block 13. A bolt is installed inside the connecting block 13 in a threaded manner. A connecting groove 12 adapted to the connecting block 13 is opened on one side of the top of the base 1, and a threaded hole is opened at the bottom inside the connecting groove 12.

[0032] The connecting block 13 can be connected to the connecting groove 12 through the bolt and the threaded hole, so that the manhole cover 2 is fixed to the base 1, which can prevent the manhole cover 2 from being lifted by excessive water pressure in the well, causing backflow.

Claims

1. A manhole cover with automatic drainage and backflow prevention, comprising a base (1), characterized in that: A manhole cover (2) is movably mounted inside the base (1), a manhole wall (7) is fixedly mounted at the bottom of the base (1), and a filter assembly is mounted inside the manhole wall (7); The manhole cover (2) is provided with a plurality of through grooves (11) at equal intervals on the circumference thereof, a filter screen (3) is fixedly mounted on the top of each of the through grooves (11), and a movable plate (8) is rotatably mounted on one side of each of the through grooves (11), and the movable plate (8) is adapted to fit the through grooves (11).

2. The automatic drainage and backflow prevention manhole cover according to claim 1, characterized in that: The filtering assembly comprises a partition (4), a mesh cylinder (5), and an annular groove (6); the annular groove (6) is fixedly mounted on the top of the partition (4); the outer edge of the partition (4) is in contact with the inner surface of the well wall (7); a circular hole is provided inside the partition (4); the circular hole is located on the inner side of the annular groove (6); and the partition (4) is mounted with the mesh cylinder (5) through the annular groove (6).

3. The automatic drainage and backflow prevention manhole cover according to claim 2 is characterized in that: The inner side of the base (1) and the inner side of the well wall (7) are both fixedly mounted with convex rings (9), and the two convex rings (9) are respectively located at the bottom of the well cover (2) and the partition (4).

4. The automatic drainage and backflow prevention manhole cover according to claim 1, characterized in that: Floating blocks (10) are fixedly mounted on the bottoms of the plurality of movable plates (8).

5. The automatic drainage and backflow prevention manhole cover according to claim 1 is characterized in that: A connection block (13) is fixedly mounted on one side of the manhole cover (2), a bolt is mounted on the internal thread of the connection block (13), a connection groove (12) adapted to the connection block (13) is provided on one side of the top of the base (1), and a threaded hole is provided at the bottom of the inner side of the connection groove (12).

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