Nodular cast iron well lid capable of preventing sewage from overflowing

Abstract

The utility model discloses a nodular cast iron well lid capable of preventing sewage from overflowing, and belongs to the field of nodular cast iron well lids. The nodular cast iron well lid capable of preventing the sewage from overflowing comprises a cast iron well lid mounting base, a cast iron well lid body is arranged on the cast iron well lid mounting base, a fixing block is arranged on the cast iron well lid body, a connecting rotating shaft is arranged on the fixing block, and the fixing block is rotationally connected with the cast iron well lid mounting base through the connecting rotating shaft. The cast iron well lid further comprises a water inlet hole, the water inlet hole is formed in the cast iron well lid body, a lower leakage pipe is arranged at the position, corresponding to the water inlet hole, of the lower end of the cast iron well lid body, the lower leakage pipe is connected with the cast iron well lid body in a welded mode, a water drainage opening is formed in the lower leakage pipe, and an anti-overflow buoy is arranged in the lower leakage pipe. The cast iron well lid solves the problem that when an existing cast iron well lid is installed on a road surface, if a sewer line is blocked, sewage in the sewer line will overflow outwards to the road surface from a water inlet hole of the cast iron well lid.

Description

Technical Field

[0001] The utility model relates to the field of ductile iron manhole covers, in particular to a ductile iron manhole cover for preventing sewage from overflowing. Background Art

[0002] Ductile iron manhole covers are mainly made of ductile iron. The quality of this kind of manhole cover involves the issue of spheroidization rate. The commonly used coating for treating castings is anti-rust asphalt paint. Of course, the surface of ductile iron manhole covers is also treated with spray anti-rust asphalt paint. Ductile iron manhole covers have an advantage. Due to the high strength and good toughness of ductile iron, ductile iron manhole covers are about 30% lighter than the same type of gray cast iron manhole covers. For example, the application number is 202021130876.5, which is a ductile iron manhole cover with anti-blocking function, including a manhole cover body, one side of the manhole cover body is fixedly connected with a fixing ring, the outer wall of the fixing ring is provided with a through groove, the top of the manhole cover body is provided with a fixing groove, one side of the fixing net is movably connected with a top plate, one side of the top plate is fixedly connected with a fixing strip, one side of the top plate is provided with a groove, and the inner wall of the groove is movably connected with a movable rod. The ductile iron manhole cover with anti-blocking function achieves the purpose of having the anti-blocking function and solves the problem that the general ductile iron manhole cover has a relatively simple structure and poor anti-blocking function. The flexible structure improves the support and stability of the device, prevents the device from being blocked and inconvenient to use after long-term use, facilitates the use of the device through water, and is convenient for the staff to open and use, and is convenient for the staff to use for subsequent maintenance work, meeting the use needs of users.

[0003] When the cast iron manhole cover of the above patent is installed on the road surface, if the sewer pipe is blocked, the sewage in the pipe will overflow from the water inlet hole of the cast iron manhole cover to the road surface. Utility Model Content

[0004] The purpose of the utility model is to provide a ductile iron manhole cover for preventing sewage from overflowing. A lower leakage pipe is arranged at the lower end of the water inlet hole, and an anti-overflow float is arranged in the lower leakage pipe. When the pipeline is blocked and the water level in the pipeline rises and submerges the lower leakage pipe, the anti-overflow float rises with the rising water level, blocks the water inlet hole, prevents sewage in the pipeline from overflowing, and solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ductile iron manhole cover for preventing sewage overflow, comprising a cast iron manhole cover mounting base, a cast iron manhole cover is arranged on the cast iron manhole cover mounting base, a fixed block is arranged on the cast iron manhole cover, a connecting shaft is arranged on the fixed block, the fixed block is rotatably connected to the cast iron manhole cover mounting base through the connecting shaft, and also comprises a water inlet hole, the water inlet hole is opened on the cast iron manhole cover, a lower leakage pipe is arranged at the lower end of the cast iron manhole cover at a position corresponding to the water inlet hole, the lower leakage pipe is welded to the cast iron manhole cover, a drain outlet is opened on the lower leakage pipe, an anti-overflow float is arranged in the lower leakage pipe, the anti-overflow float is in limited contact with the inner wall of the lower leakage pipe; the outer surface of the anti-overflow float is provided with a lower magnetic sheet.

[0006] Preferably, an annular upper magnetic sheet is provided on the inner wall of the lower leakage pipe at one end close to the water inlet hole, and the annular upper magnetic sheet is bolted to the inner wall of the lower leakage pipe.

[0007] Preferably, a limiting ring is provided at the upper end of the annular upper magnetic sheet, and the limiting ring is welded to the inner wall of the lower leakage pipe.

[0008] Preferably, a connecting block is provided on the outer surface of the cast iron manhole cover mounting base, and one end of the connecting block is welded to the outer surface of the cast iron manhole cover mounting base.

[0009] Preferably, the connecting block is provided with a ground-contacting connecting base at one end away from the cast iron manhole cover mounting base, and the ground-contacting connecting base is welded to the connecting block.

[0010] Preferably, a classification mark is provided on the outer surface of the cast iron manhole cover, and the classification mark is integrated with the cast iron manhole cover.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model comprises a cast iron manhole cover mounting base, a cast iron manhole cover is arranged on the cast iron manhole cover mounting base, a fixing block is arranged on the cast iron manhole cover, a connecting shaft is arranged on the fixing block, the fixing block is rotatably connected to the cast iron manhole cover mounting base through the connecting shaft, and also includes a water inlet, the water inlet is opened on the cast iron manhole cover, a lower leakage pipe is arranged at the lower end of the cast iron manhole cover at a position corresponding to the water inlet, the lower leakage pipe is welded and connected to the cast iron manhole cover, a drainage outlet is opened on the lower leakage pipe, an anti-overflow float is arranged in the lower leakage pipe, the anti-overflow float is limitedly abutted against the inner wall of the lower leakage pipe, a lower magnetic sheet is arranged on the outer surface of the anti-overflow float, when the cast iron manhole cover is installed on the road surface, if the pipeline below the manhole cover is blocked and the water level in the pipeline rises, when the water level submerges the lower leakage pipe, the anti-overflow float in the lower leakage pipe will float up due to the buoyancy of the water until the water inlet is blocked, thereby preventing the sewage in the pipeline from overflowing through the water inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0015] Figure 3 This is a schematic diagram of the lower leakage pipe structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the lower leakage pipe of the utility model;

[0017] In the figure: 1. Cast iron manhole cover installation base; 2. Connecting inverted block; 3. Lower drain pipe; 101. Connecting shaft; 102. Fixed block; 103. Cast iron manhole cover; 104. Classification mark; 105. Water inlet hole; 201. Ground connection base; 301. Drainage outlet; 302. Limiting ring; 303. Ring-shaped upper magnetic sheet; 304. Anti-overflow float; 305. Lower magnetic sheet. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1-3 The utility model provides an embodiment: a ductile iron manhole cover for preventing sewage overflow, comprising a cast iron manhole cover mounting base 1, a cast iron manhole cover 103 is arranged on the cast iron manhole cover mounting base 1, a fixed block 102 is arranged on the cast iron manhole cover 103, a connecting shaft 101 is arranged on the fixed block 102, the fixed block 102 is rotatably connected to the cast iron manhole cover mounting base 1 through the connecting shaft 101, and also comprises a water inlet hole 105, the water inlet hole 105 is opened on the cast iron manhole cover 103, a lower leakage pipe 3 is arranged at the lower end of the cast iron manhole cover 103 at a position corresponding to the water inlet hole 105, the lower leakage pipe 3 is welded to the cast iron manhole cover 103, a drainage port 301 is opened on the lower leakage pipe 3, an anti-overflow float 304 is arranged in the lower leakage pipe 3, the anti-overflow float 304 is limitedly abutted against the inner wall of the lower leakage pipe 3, and a lower magnetic sheet 305 is arranged on the outer surface of the anti-overflow float 304.

[0020] In this embodiment, Figure 4 As shown, an annular upper magnetic sheet 303 is provided at one end of the inner wall of the lower leakage pipe 3 near the water inlet hole 105, and the annular upper magnetic sheet 303 is bolted to the inner wall of the lower leakage pipe 3. When the anti-overflow float 304 is about to overflow due to pipe blockage and the anti-overflow float 304 floats, the annular upper magnetic sheet 303 absorbs the lower magnetic sheet 305 provided on the anti-overflow float 304 to prevent the anti-overflow float 304 from being unable to block the water inlet hole due to improper position.

[0021] In this embodiment, Figure 4 As shown, a limit ring 302 is provided on the upper end of the annular upper magnetic sheet 303, and the limit ring 302 is welded to the inner wall of the lower leakage pipe 3. The limit ring 302 is used to prevent the anti-overflow float 304 from escaping from the lower leakage pipe 3 due to excessively high water level in the pipeline.

[0022] In this embodiment, Figure 1 As shown, a connecting block 2 is provided on the outer surface of the cast iron manhole cover mounting base 1, and one end of the connecting block 2 is welded to the outer surface of the cast iron manhole cover mounting base 1.

[0023] In this embodiment, Figure 1 As shown, a ground-contacting connection base 201 is provided at one end of the connecting block 2 away from the cast iron manhole cover mounting base 1 , and the ground-contacting connection base 201 is welded to the connecting block 2 .

[0024] In this embodiment, Figure 1 The outer surface shown is provided with a classification mark 104, and the classification mark 104 is integrated with the cast iron manhole cover 103. The classification mark 104 includes a mark with the word "rain" on the manhole cover on the rainwater pipe and a mark with the word "dirt" on the manhole cover on the sewage pipe. The cast iron manhole covers 103 in different installation environments can be accurately classified.

[0025] Working principle: The staff installs the cast iron manhole cover 103 above the pipeline. When the cast iron manhole cover 103 is installed on the pipeline, if the pipeline below the manhole cover is blocked and the water level in the pipeline rises, when the water level submerges the lower leakage pipe 3, the anti-overflow float 304 in the lower leakage pipe 3 will float up due to the buoyancy of the water until it blocks the water inlet 105, preventing the sewage in the pipeline from overflowing through the water inlet 105. An annular upper magnetic piece 303 is provided on the inner wall of the lower leakage pipe 3 at one end close to the water inlet 105. The annular upper magnetic piece 303 is bolted to the inner wall of the lower leakage pipe 3. When the anti-overflow float 304 is about to overflow due to pipeline blockage and the anti-overflow float 304 floats up, the annular upper magnetic piece 303 adsorbs the lower magnetic piece 305 set on the anti-overflow float 304 to prevent the anti-overflow float 304 from being unable to block the water inlet due to improper position.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ductile iron manhole cover for preventing sewage from overflowing, comprising a cast iron manhole cover mounting base (1), a cast iron manhole cover (103) being arranged on the cast iron manhole cover mounting base (1), a fixing block (102) being arranged on the cast iron manhole cover (103), a connecting shaft (101) being arranged on the fixing block (102), and the fixing block (102) being rotatably connected to the cast iron manhole cover mounting base (1) via the connecting shaft (101); Features: The invention also comprises a water inlet hole (105), wherein the water inlet hole (105) is provided on the cast iron manhole cover (103), a lower drain pipe (3) is provided at a position corresponding to the water inlet hole (105) at the lower end of the cast iron manhole cover (103), the lower drain pipe (3) is welded to the cast iron manhole cover (103), a drain outlet (301) is provided on the lower drain pipe (3), an anti-overflow float (304) is provided inside the lower drain pipe (3), the anti-overflow float (304) is in limited contact with the inner wall of the lower drain pipe (3), and a lower magnetic sheet (305) is provided on the outer surface of the anti-overflow float (304).

2. The ductile iron manhole cover for preventing sewage overflow according to claim 1 is characterized in that: An annular upper magnetic sheet (303) is provided on the inner wall of the lower leakage pipe (3) at one end close to the water inlet hole (105), and the annular upper magnetic sheet (303) is bolted to the inner wall of the lower leakage pipe (3).

3. The ductile iron manhole cover for preventing sewage overflow according to claim 2 is characterized in that: A limiting ring (302) is provided at the upper end of the annular upper magnetic sheet (303), and the limiting ring (302) is welded to the inner wall of the lower leakage pipe (3).

4. The ductile iron manhole cover for preventing sewage overflow according to claim 1 is characterized in that: The outer surface of the cast iron manhole cover installation base (1) is provided with a connecting block (2), and one end of the connecting block (2) is welded to the outer surface of the cast iron manhole cover installation base (1).

5. The ductile iron manhole cover for preventing sewage overflow according to claim 4 is characterized in that: The connecting block (2) is provided with a ground-contacting connecting base (201) at one end away from the cast iron manhole cover mounting base (1), and the ground-contacting connecting base (201) is welded to the connecting block (2).

6. The ductile iron manhole cover for preventing sewage overflow according to claim 1 is characterized in that: The outer surface of the cast iron manhole cover (103) is provided with a classification mark (104), and the classification mark (104) and the cast iron manhole cover (103) are integrally provided.

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