Sewage collection and drainage well lid structure

Abstract

A sewage collection and drainage well lid structure relates to the technical field of municipal engineering and comprises a catch basin and a well lid body arranged at the top of the catch basin, the well lid body comprises a precast concrete block, an annular sewage collection groove is formed in the top end of the precast concrete block around the axis, and an inverted trapezoidal through hole is formed in the inner side of the sewage collection groove. The through hole penetrates through the upper end face and the lower end face of the well lid body and is coaxial with the well lid body, a first filter plate is clamped to an upper end opening of the through hole, a second filter plate is embedded into a lower end opening of the through hole, and a conical filter cover is coaxially and fixedly connected to the top end of the second filter plate. According to the rainwater collecting device, dirt in rainwater can be collected by arranging the dirt collecting tank, and the dirt can be discharged around the rainwater well under the condition of light rain; under the condition of moderate rain or heavy rain, dirt can be further filtered and collected by arranging a first filter plate and a second filter plate; the conical filter cover is arranged, so that the filter effect can be ensured under the condition of dirt accumulation.

Description

Technical Field

[0001] The invention relates to the technical field of municipal engineering, and in particular to a sewage collection and drainage manhole cover structure. Background Art

[0002] Municipal engineering refers to municipal infrastructure construction projects. Municipal drainage pipes include rainwater and sewage pipes. The main function of the drainage well is to collect rainwater from the road surface. It collects rainwater and drains it to the rainwater pipe under the road. However, due to the mud and solid garbage on the road surface, it flows into the drainage well under the scouring of rainwater, blocking the drainage well, reducing the drainage efficiency of the city, causing urban waterlogging, and easily causing loss of life and property of the people.

[0003] Most of the existing drainage manhole covers are grate structures made of concrete or metal materials, which do not have the function of collecting dirt. When in use, it is inevitable that a large amount of dirt will enter the drainage well, which will cause the drainage well to be blocked over time. Utility Model Content

[0004] The present invention provides a dirt collection drainage manhole cover structure, which improves the structure of a traditional drainage manhole cover to solve the technical problem that the drainage manhole cover in the prior art has no dirt collection function and easily causes blockage of the drainage well.

[0005] To achieve the above purpose, the technical solution of this novel invention is:

[0006] A waste collection and drainage manhole cover structure comprises a rainwater well and a manhole cover body arranged on the top of the rainwater well, wherein the manhole cover body comprises a precast concrete block, wherein an annular waste collection groove is arranged around an axis at the top of the precast concrete block, an inverted trapezoidal through hole is arranged on the inner side of the waste collection groove, the through hole passes through the upper and lower end surfaces of the manhole cover body and is coaxial with the manhole cover body, a first filter plate is clamped at the upper port of the through hole, and a second filter plate is embedded in the lower port, and a conical filter cover is coaxially fixedly connected to the top of the second filter plate.

[0007] Preferably, the precast concrete block is a cubic or cylindrical structure, and the bottom end of the precast concrete block is sealed and connected to the top end of the rainwater well.

[0008] Preferably, an annular filter plate is clamped at the top of the dirt collection tank, and the filter hole diameter of the annular filter plate is larger than the filter hole diameters of the first filter plate, the second filter plate, and the conical filter cover.

[0009] Preferably, the inner wall of the dirt collection tank is provided with a plurality of drainage holes connected with the through holes, and a filter net is embedded in the port of the drainage hole facing the dirt collection tank.

[0010] Preferably, a plurality of drainage holes are evenly distributed around the axis of the manhole cover body, and the ports of the drainage holes are located on one side of the through hole and are opposite to the outer wall of the conical filter cover.

[0011] Preferably, the first filter plate is a circular plate, and an annular limiting edge is integrally formed on the outer edge of the circular plate, and the annular limiting edge is engaged with an annular groove preset at the upper end of the through hole.

[0012] Preferably, a plurality of steel bars are evenly distributed around the axis on the outer edge of the second filter plate, and the steel bars are embedded in the prefabricated concrete block where the lower end of the inner wall of the through hole is located.

[0013] Preferably, the conical filter cover comprises an annular fixing frame at the bottom, a circular plate at the top, and a conical filter screen connected between the annular fixing frame and the circular plate.

[0014] Preferably, the bottom end of the annular fixing frame is welded to the top end of the second filter plate.

[0015] Preferably, the conical filter screen has a plurality of pleated structures evenly distributed around the axis, the pleated structures protruding outward or recessed inward.

[0016] The novel sewage collection and drainage manhole cover structure has the following beneficial effects:

[0017] The invention can collect dirt in rainwater by arranging a dirt collection trough, and can discharge the dirt around the rainwater well in the case of light rain; in the case of moderate or heavy rain, the dirt can be further filtered and collected by arranging a first filter plate and a second filter plate; and the conical filter cover can ensure the filtering effect when dirt accumulates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 , a schematic diagram of the overall structure of the new device when in use;

[0019] Figure 2 , a top view of the new manhole cover body;

[0020] Figure 3 , a schematic diagram of the top view of the structure of the novel conical filter cover;

[0021] 1: rainwater well, 2: precast concrete block, 3: second filter plate, 4: dirt collection trough, 5: trapezoidal through hole, 6: steel bar, 7: annular filter plate, 8: first filter plate, 9: annular limiting edge, 10: conical filter cover, 11: pleated structure, 12: drainage hole, 13: filter net, 14: annular fixing frame, 15: round plate. DETAILED DESCRIPTION

[0022] The following is a detailed description of the implementation method of the present invention in a step-by-step manner. The description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only used to describe the present invention and simplify the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0024] The following embodiments may be understood as explaining part of the structure of the present invention individually, or may be understood as a combination of multiple embodiments to illustrate the structure of the present invention in a wider range.

[0025] Example 1

[0026] A sewage collection drainage manhole cover structure, such as Figure 1-3 As shown, it includes a rainwater well 1 and a manhole cover body arranged on the top of the rainwater well 1, the manhole cover body includes a precast concrete block 2, the top of the precast concrete block 2 is provided with an annular dirt collection groove 4 around the axis, the inner side of the dirt collection groove 4 is provided with an inverted trapezoidal through hole 5, the through hole 5 penetrates the upper and lower end surfaces of the manhole cover body and is coaxial with the manhole cover body, the upper port of the through hole 5 is clamped with a first filter plate 8, and the lower port is embedded with a second filter plate 3, and the top of the second filter plate 3 is coaxially fixedly connected with a conical filter cover 10.

[0027] In this embodiment, the purpose of setting up the dirt collection trough is to collect the dirt entering the rainwater well through the dirt collection trough first, thereby forming the first barrier for collecting dirt; after the rainwater with debris enters the dirt collection trough, the debris sinks in the dirt collection trough, and after the dirt collection trough is full, it flows to the first filter plate. The function of the first filter plate is to preliminarily filter the rainwater entering the middle part of the manhole cover body, and form a second barrier for collecting dirt between the first filter plate and the second filter plate. The function of the conical filter cover is: as the dirt in the second barrier accumulates, the drainage efficiency of the second filter plate will decrease, and the liquid level will rise at this time. Since the side wall of the conical filter cover has a filtering function, the drainage function can continue to be maintained when the dirt accumulates.

[0028] Example 2

[0029] like Figure 1 , 2 As shown, the precast concrete block 2 is a cubic or cylindrical structure, and the bottom end of the precast concrete block is sealed and connected to the top end of the rainwater well.

[0030] Example 3

[0031] like Figure 1 , 2 As shown, an annular filter plate 7 is clamped at the top of the dirt collection tank 4, and the filter hole diameter of the annular filter plate 7 is larger than the filter hole diameters of the first filter plate 8, the second filter plate 3, and the conical filter cover 10, so that larger pollutants are retained in the dirt collection tank 4.

[0032] Example 4

[0033] like Figure 1 As shown, the inner wall of the dirt collection tank 4 is provided with a plurality of drainage holes 12 connected with the through holes 5 , and a filter screen 13 is embedded in the port of the drainage hole 12 facing the dirt collection tank 4 .

[0034] like Figure 1 , 2 As shown, a plurality of drainage holes 12 are evenly distributed around the axis of the manhole cover body, and the ports of the drainage holes 12 located on one side of the through hole 5 are opposite to the outer wall of the conical filter cover 10 .

[0035] In this embodiment, the sewage in the dirt collection tank 4 is directly filtered by the filter screen 13 and enters the through hole 5, thereby preventing the dirt collection tank from being full and ensuring the dirt collection effect of the dirt collection tank. At the same time, the filtered water can wash the outer wall of the conical filter cover 10 to prevent dirt from being retained on the conical filter cover and ensure the drainage effect when the rain is heavy.

[0036] Example 5

[0037] like Figure 1 , 2 As shown, the first filter plate 8 is a circular plate, and an annular limiting edge 9 is integrally formed on the outer edge of the circular plate, and the annular limiting edge 9 is engaged with an annular groove (not marked in the figure) preset at the upper end of the through hole 5. That is, the first annular plate can be removed, and the dirt on the second filter plate can be cleaned after removal.

[0038] Example 6

[0039] like Figure 1 As shown, a plurality of steel bars 6 are evenly distributed around the axis on the outer edge of the second filter plate 3 , and the steel bars 6 are pre-buried in the prefabricated concrete block 2 at the lower end of the inner wall of the through hole 5 , so that the second filter plate 3 is fixed.

[0040] Example 7

[0041] like Figure 1 , 3As shown, the conical filter cover 10 includes an annular fixing frame 14 located at the bottom, a circular plate 15 located at the top, and a conical filter screen connected between the annular fixing frame 14 and the circular plate 15 .

[0042] like Figure 1 , 3 As shown, the bottom end of the annular fixing frame 14 is welded to the top end of the second filter plate 3 .

[0043] Example 8

[0044] like Figure 1 , 3 As shown, the conical filter screen has a plurality of pleated structures 11 evenly distributed around the axis, which are protruding outward or recessed inward, in order to increase the area of ​​the conical filter screen and improve the filtering effect.

[0045] When the new type is used, rainwater first passes through the dirt collection tank. When the amount of rainwater is not large, the dirt collection tank continuously discharges filtered water into the through hole through the filter net, and the dirt can be collected in the dirt collection tank; when the rainwater is heavy, the heavy dirt settles in the dirt collection tank, and the overflowing rainwater containing less dirt enters the through hole after being filtered by the first filter plate, and then enters the rainwater well after being filtered by the second filter plate and the conical filter cover. When the rainwater is particularly heavy, dirt accumulates on the second filter plate, the liquid level rises, and the rainwater enters the conical filter cover through the conical filter cover and is discharged through the second filter plate, ensuring the drainage effect. The staff can regularly open the annular filter plate on the dirt collection tank to collect the dirt in the dirt collection tank. At the same time, the first filter plate can also be opened to clean the dirt accumulated in the through hole.

Claims

1. A waste collection and drainage manhole cover structure, characterized by: It includes a rainwater well and a manhole cover body arranged on the top of the rainwater well. The manhole cover body includes a precast concrete block. The top of the precast concrete block is provided with an annular dirt collection groove around the axis. The inner side of the dirt collection groove is provided with an inverted trapezoidal through hole. The through hole penetrates the upper and lower end surfaces of the manhole cover body and is coaxial with the manhole cover body. The upper port of the through hole is clamped with a first filter plate, and the lower port is embedded with a second filter plate. The top of the second filter plate is coaxially fixedly connected with a conical filter cover.

2. A waste collection and drainage manhole cover structure as claimed in claim 1, characterized in that: The precast concrete block is a cubic or cylindrical structure, and the bottom end of the precast concrete block is sealed and connected to the top end of the rainwater well.

3. A waste collection and drainage manhole cover structure as claimed in claim 2, characterized in that: An annular filter plate is clamped at the top of the dirt collection tank, and the filter hole diameter of the annular filter plate is larger than the filter hole diameters of the first filter plate, the second filter plate and the conical filter cover.

4. A waste collection and drainage manhole cover structure as claimed in claim 3, characterized in that: The inner wall of the dirt collection tank is provided with a plurality of drainage holes communicated with the through holes, and a filter net is embedded in the port of the drainage hole facing the dirt collection tank.

5. A waste collection and drainage manhole cover structure as claimed in claim 4, characterized in that: A plurality of drainage holes are evenly distributed around the axis of the manhole cover body, and the ports of the drainage holes are located on one side of the through hole and are opposite to the outer wall of the conical filter cover.

6. A waste collection and drainage manhole cover structure as claimed in claim 5, characterized in that: The first filter plate is a circular plate, and an annular limiting edge is integrally formed on the outer edge of the circular plate. The annular limiting edge is engaged with an annular groove preset at the upper end of the through hole.

7. A waste collection and drainage manhole cover structure as claimed in claim 6, characterized in that: A plurality of steel bars are evenly distributed around the axis on the outer edge of the second filter plate, and the steel bars are pre-buried in the prefabricated concrete block where the lower end of the inner wall of the through hole is located.

8. A waste collection and drainage manhole cover structure as claimed in claim 7, characterized in that: The conical filter cover comprises an annular fixing frame at the bottom, a circular plate at the top and a conical filter screen connected between the annular fixing frame and the circular plate.

9. A waste collection and drainage manhole cover structure as claimed in claim 8, characterized in that: The bottom end of the annular fixing frame is welded to the top end of the second filter plate.

10. A waste collection and drainage manhole cover structure as claimed in claim 9, characterized in that: The conical filter screen is evenly distributed with a plurality of pleated structures protruding outwards or recessed inwards around the axis.

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