Nodular cast iron well lid capable of draining water easily

Abstract

The utility model discloses a nodular cast iron well lid easy to drain water, which comprises a well frame and a well lid body, the well lid body is clamped in a frame body of the well frame, the nodular cast iron well lid further comprises a taper box, a taper embedding hole is formed in the center of the surface of the well lid body, and the taper box is clamped in the taper embedding hole. The manhole cover body made of nodular cast iron is improved to be provided with a concave-convex water inlet structure, when the manhole cover body is clamped in a manhole frame above a catch basin, the manhole cover body guides sewage to enter the catch basin through the edge strip opening, the taper falling hole, the main strip opening, the matched strip opening and the taper box, and when leaves in the sewage flow to the surface of the manhole cover body, the leaves in the sewage flow to the surface of the manhole cover body. The main bent ribs and the auxiliary bent ribs protruding out of the surface of the well lid body can form a structure for blocking leaves at the main strip opening and the auxiliary strip opening, the protruding ring and the dislocation plate arranged above the taper box can block the leaves, the well lid body made of nodular cast iron is not prone to being blocked by the leaves in daily use, and sewage is easily discharged into the well lid body.

Description

Technical Field

[0001] The utility model relates to the technical field of cast iron manhole covers, in particular to a ductile iron manhole cover which is easy to drain water. Background Art

[0002] Cast iron manhole covers are divided into ductile iron manhole covers and gray cast iron manhole covers. Generally speaking, ductile iron manhole covers of the same weight have stronger pressure resistance than gray iron manhole covers. 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 paint 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, which is that ductile iron has high strength and good toughness.

[0003] At present, when the ductile iron manhole cover of the rainwater well is draining, a drainage groove is usually set on the surface of the manhole cover for the water to flow into the surrounding area of ​​the well. However, the drainage groove of this manhole cover is usually a concave groove body, and the drainage grooves of the manhole cover are at the same horizontal position. When fallen leaves are washed on the surface of the manhole cover by the water flow, the drainage groove is easily covered and blocked by the fallen leaves, which makes the ductile iron manhole cover difficult to drain. For this reason, we propose a ductile iron manhole cover that is easy to drain. Utility Model Content

[0004] The main purpose of the utility model is to provide a ductile iron manhole cover which is easy to drain. A concave and convex water inlet structure is improved at the manhole cover body made of ductile iron. When the manhole cover body is stuck in the manhole frame above the rainwater well, the manhole cover body uses side strips, tapered drop holes, main strips, auxiliary strips and tapered boxes to guide sewage into the rainwater well. When leaves in the sewage flow to the surface of the manhole cover body, the raised main bending ribs and auxiliary bending ribs on the surface of the manhole cover body can form a structure to block the leaves at the main strips and auxiliary strips, and the convex ring and the offset plate above the tapered box can also block the leaves, so that the manhole cover body made of ductile iron is not easily blocked by leaves during daily use, and sewage is easily discharged from the manhole cover body, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A ductile iron manhole cover that is easy to drain, comprises a manhole frame and a manhole cover body, the manhole cover body is clamped in the frame of the manhole frame, and also comprises a tapered box, a tapered embedding hole is provided in the center of the surface of the manhole cover body, and the tapered box is clamped in the tapered embedding hole, a convex ring is welded outside the upper box opening of the tapered box that exposes the tapered embedding hole, and a ring leakage opening is provided at the ring wall of the convex ring, and an offset plate extending to the surface of the manhole cover body is welded to the top of the tapered box in the ring leakage opening, and the manhole cover body surface outside the tapered drop holes is symmetrically provided with main strip openings and auxiliary strip openings on the manhole cover body surface outside the tapered drop holes, and the manhole cover body surface outside the tapered drop holes is symmetrically provided with main strip openings and auxiliary strip openings, and the manhole cover body surface outside the main strip openings and auxiliary strip openings are respectively raised with main bending ribs and auxiliary bending ribs for blocking debris, and the manhole cover body surface outside the tapered embedding hole, the tapered drop hole, the main bending ribs and the auxiliary bending ribs is provided with side strip openings, and the inner box bottom of the tapered box is provided with a bottom leakage opening.

[0007] Furthermore, a lifting rod is welded at the inner box opening of the taper box;

[0008] By adopting the above technical solution, the taper box can be lifted up from the taper embedding hole by holding the lifting rod to be disassembled for cleaning.

[0009] Furthermore, the ring leakage openings are provided in four groups in a cross-distributed manner on the ring wall of the convex ring, and the bottom notches of the ring leakage openings are in the same horizontal plane as the cover surface of the manhole cover body;

[0010] By adopting the above technical solution, there are four groups of ring leaks on the ring wall of the convex ring, which can leak water from the surface of the manhole cover body.

[0011] Furthermore, the notch of the main bending reinforcement faces the notch of the auxiliary bending reinforcement, and the main bending reinforcement and the auxiliary bending reinforcement have the same reinforcement height;

[0012] By adopting the above technical solution, the main bending reinforcement and the auxiliary bending reinforcement can be respectively protected above the main strip opening and the auxiliary strip opening to form a structure for blocking the leaves in opposite directions, thereby preventing the leaves from directly covering the main strip opening and the auxiliary strip opening when flowing with the water.

[0013] Furthermore, the box body of the tapered box is a tapered box body, and the tapered box body of the tapered box is clamped on the tapered hole wall of the tapered embedded hole;

[0014] By adopting the above technical solution, the taper box can be clamped in the taper embedding hole to obtain support.

[0015] Furthermore, the cavity size of the main strip opening and the auxiliary strip opening is greater than the cavity size of the side strip opening;

[0016] By adopting the above technical solution, more water can flow into the main strip opening and the auxiliary strip opening compared to the side strip opening.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model improves the ductile iron manhole cover body by arranging a concave-convex water inlet structure. When the manhole cover body is stuck in the manhole frame above the rainwater well, the manhole cover body guides sewage into the rainwater well with the side strip openings, tapered drop holes, main strip openings, auxiliary strip openings and tapered boxes. When leaves in the sewage flow to the surface of the manhole cover body, the raised main bending ribs and auxiliary bending ribs on the surface of the manhole cover body can form a structure to block the leaves from covering at the main strip openings and auxiliary strip openings, and the convex ring and the offset plate above the tapered box can also block the leaves, so that the ductile iron manhole cover body is not easily blocked by the leaves during daily use, and the manhole cover body is easy to discharge sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of the overall structure of a ductile iron manhole cover that is easy to drain.

[0020] Figure 2 The utility model is a schematic diagram of the disassembly of the taper box and the taper embedded hole of a ductile iron manhole cover which is easy to drain water.

[0021] In the figure: 1. well frame; 2. well cover body; 3. tapered embedded hole; 4. tapered box; 5. bottom leakage; 6. convex ring; 7. ring leakage; 8. offset plate; 9. tapered drop hole; 10. main strip opening; 11. auxiliary strip opening; 12. main bending rib; 13. auxiliary bending rib; 14. side strip opening; 15. lifting rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-2 As shown, a ductile iron manhole cover that is easy to drain includes a manhole frame 1 and a manhole cover body 2, the manhole cover body 2 is clamped in the frame of the manhole frame 1, and also includes a tapered box 4, a tapered embedding hole 3 is centrally provided on the surface of the manhole cover body 2, and the tapered box 4 is clamped in the tapered embedding hole 3, a convex ring 6 is welded outside the upper box opening of the tapered box 4 exposed from the tapered embedding hole 3, and a ring leakage opening 7 is provided at the ring wall of the convex ring 6, and a dislocation plate 8 extending toward the surface of the manhole cover body 2 is welded to the top of the tapered box 4 in the ring leakage opening 7, The surface of the manhole cover body 2 outside the tapered box 4 is symmetrically provided with tapered drop holes 9, and the surface of the manhole cover body 2 outside the tapered drop holes 9 is symmetrically provided with main strip openings 10 and auxiliary strip openings 11. The surface of the manhole cover body 2 outside the main strip openings 10 and auxiliary strip openings 11 are respectively protruded with main bending ribs 12 and auxiliary bending ribs 13 for blocking debris. The surface of the manhole cover body 2 outside the tapered embedding holes 3, the tapered drop holes 9, the main bending ribs 12 and the auxiliary bending ribs 13 is provided with side strip openings 14, and the inner box bottom of the tapered box 4 is provided with a bottom leakage opening 5.

[0024] Wherein, a lifting rod 15 is welded at the inner box opening of the taper box 4;

[0025] By adopting the above technical solution, the taper box 4 can be lifted up from the taper embedding hole 3 by holding the lifting rod 15 to be disassembled for cleaning.

[0026] The ring leakage openings 7 are four groups of cross-distributed openings on the ring wall of the convex ring 6, and the bottom notches of the ring leakage openings 7 are on the same horizontal plane as the cover surface of the manhole cover body 2;

[0027] By adopting the above technical solution, four groups of ring leaks 7 are provided on the ring wall of the convex ring 6 to allow water on the surface of the manhole cover body 2 to leak into the manhole cover body 2 .

[0028] The notch of the main bending rib 12 faces the notch of the auxiliary bending rib 13, and the main bending rib 12 and the auxiliary bending rib 13 have the same rib height;

[0029] By adopting the above technical solution, the main bending ribs 12 and the auxiliary bending ribs 13 can be respectively protected above the main strip opening 10 and the auxiliary strip opening 11 to form a structure for blocking leaves in opposite directions, thereby preventing the leaves from directly covering the main strip opening 10 and the auxiliary strip opening 11 when flowing with the water.

[0030] The box body of the tapered box 4 is a tapered box body, and the tapered box body of the tapered box 4 is clamped on the tapered hole wall of the tapered embedding hole 3;

[0031] By adopting the above technical solution, the taper box 4 can be clamped on the taper embedding hole 3 to obtain support.

[0032] The size of the main strip opening 10 and the auxiliary strip opening 11 is greater than the size of the side strip opening 14.

[0033] By adopting the above technical solution, more water can flow into the main strip opening 10 and the auxiliary strip opening 11 compared with the side strip opening 14 .

[0034] It should be noted that the utility model is a ductile iron manhole cover that is easy to drain. After the ductile iron manhole cover body 2 is improved with a concave-convex water inlet structure, the manhole cover body 2 can be normally inserted into the manhole frame 1, and the manhole frame 1 can be fixed at the wellhead of the rainwater well in a normal construction method. When sewage carries leaves or debris to the surface of the manhole cover body 1, the sewage will first fall from the side strip opening 14 into the rainwater well below the manhole frame 1, and the tapered drop hole 9, the main strip opening 10 and the auxiliary strip opening 11 can also allow the sewage to flow downward into the rainwater well. When the leaves carried by the sewage touch the main bending rib 12 or the auxiliary bending rib 13 on the surface of the manhole cover body 2 , the leaves will be blocked to prevent the main strip opening 10 and the auxiliary strip opening 11 from being covered and blocked by the leaves, and when too many leaves accumulate on the surface of the manhole cover body 2, the convex ring 6 above the tapered box 4 can flow in rainwater through the ring leakage port 7, and the convex ring 6 cooperates with the offset plate 8 to prevent a large number of leaves from entering the tapered box 4 with the water flow, and the sewage entering the tapered box 4 flows downward from the bottom leakage port 5 into the rainwater well below the well frame 1. When some debris is collected inside the tapered box 4, the lifting rod 15 can be held to lift the tapered box 4 out of the tapered embedded hole 3, and then after manually cleaning the debris in the tapered box 4, it can be put back into the tapered embedded hole 3 for use.

[0035] It should be noted that the utility model is a ductile iron manhole cover that is easy to drain. The components in the utility model are all components known to technical personnel in the field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A ductile iron manhole cover that is easy to drain, comprising a manhole frame (1) and a manhole cover body (2), wherein the manhole cover body (2) is clamped in the frame of the manhole frame (1), and characterized in that: It also comprises a tapered box (4), a tapered embedding hole (3) is centrally provided on the surface of the manhole cover body (2), and the tapered box (4) is clamped in the tapered embedding hole (3), a convex ring (6) is welded outside the upper box opening of the tapered box (4) exposed from the tapered embedding hole (3), and a ring leakage opening (7) is provided on the ring wall of the convex ring (6), a dislocation plate (8) extending toward the surface of the manhole cover body (2) is welded to the top of the tapered box (4) in the ring leakage opening (7), and tapered drop holes (9) are symmetrically provided on the surface of the manhole cover body (2) outside the tapered box (4) The surface of the manhole cover body (2) outside the tapered drop hole (9) is symmetrically provided with a main strip opening (10) and a matching strip opening (11); the surface of the manhole cover body (2) outside the main strip opening (10) and the matching strip opening (11) is respectively provided with a main bending rib (12) and a matching bending rib (13) for blocking debris; the surface of the manhole cover body (2) outside the tapered embedded hole (3), the tapered drop hole (9), the main bending rib (12) and the matching bending rib (13) is provided with a side strip opening (14); and the inner box bottom of the tapered box (4) is provided with a bottom leakage opening (5).

2. The ductile iron manhole cover with easy drainage according to claim 1, characterized in that: A lifting rod (15) is welded at the inner box opening of the taper box (4).

3. The ductile iron manhole cover with easy drainage according to claim 1, characterized in that: Four groups of annular leakage openings (7) are cross-distributed on the annular wall of the convex ring (6), and the bottom notches of the annular leakage openings (7) and the cover surface of the manhole cover body (2) are located at the same horizontal plane.

4. The ductile iron manhole cover with easy drainage according to claim 1, characterized in that: The notch of the main bending rib (12) faces the notch of the auxiliary bending rib (13), and the main bending rib (12) and the auxiliary bending rib (13) have the same rib height.

5. The ductile iron manhole cover with easy drainage according to claim 1, characterized in that: The box body of the tapered box (4) is a tapered box body, and the tapered box body of the tapered box (4) is clamped on the tapered hole wall of the tapered embedding hole (3).

6. The ductile iron manhole cover with easy drainage according to claim 1, characterized in that: The cavity sizes of the main strip opening (10) and the auxiliary strip opening (11) are greater than the cavity size of the side strip opening (14).

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