A snap type closed well lid

Abstract

This invention provides a snap-on sealed manhole cover, comprising a manhole base pre-embedded in a manhole, a manhole cover covering the manhole base, a first snap-on part, and a second snap-on part. The manhole cover includes a manhole cover body and an outer fixing part and an inner fixing part disposed on the manhole cover body. Both the outer fixing part and the inner fixing part extend downward from the manhole cover body. The manhole base includes an inner support part and an outer support part. The first snap-on part includes a first snap-on one disposed on the outer fixing part and a first snap-on two disposed on the outer support part. The second snap-on part includes a second snap-on one disposed on the inner fixing part and a second snap-on two disposed on the inner support part. By pressing or pulling the manhole cover, the manhole cover can be disassembled and assembled with the manhole base through the cooperation of the first snap-on part and the second snap-on part, avoiding the situation where the manhole cover cannot be opened normally when the bolts are corroded, which is a problem with bolted connections.

Description

Technical Field

[0001] This invention relates to the field of drainage technology, and in particular to a snap-on sealed manhole cover. Background Technology

[0002] The separation of rainwater and sewage in urban drainage networks is a crucial measure to effectively improve the treatment of polluted water bodies. However, for most old urban areas with combined sewer systems, there is insufficient space to construct new drainage pipes due to narrow alleys and dense underground pipelines. Adopting an intensive drainage system is an effective solution to the shortage of drainage pipe space in old urban areas, where rainwater and sewage pipes are laid in the same location, i.e., using a layout of "rainwater ditch above, sewage pipe below".

[0003] In this design, the inspection well openings of the lower-level sewage pipeline system are located within the rainwater ditch, using sealed manhole covers to prevent rainwater from entering the sewage pipes. Currently, the commonly used sealed manhole covers in engineering projects consist of a number of bolts installed around the perimeter of the cover to connect it to the manhole casing, with a rubber sealing ring between the cover and the opening for a tight seal. However, these sealed manhole covers are inconvenient and time-consuming to open during pipeline maintenance, and if the bolts rust, the cover may become unusable. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a snap-on sealing manhole cover.

[0005] This invention provides a snap-on sealed manhole cover, comprising a manhole base pre-embedded in a manhole, a manhole cover covering the manhole base, a first snap-on part, and a second snap-on part. The manhole cover includes a manhole cover body and an outer fixing part and an inner fixing part disposed on the manhole cover body. Both the outer fixing part and the inner fixing part extend downward from the manhole cover body. The manhole base includes an inner support part and an outer support part. The first snap-on part includes a first snap-on one disposed on the outer fixing part and a first snap-on two disposed on the outer support part, the first snap-on one being adapted to the first snap-on two. The second snap-on part includes a second snap-on one disposed on the inner fixing part and a second snap-on two disposed on the inner support part, the second snap-on one being adapted to the second snap-on two.

[0006] Preferably, when both the first latching part and the second latching part are engaged, the first latching part is located radially outward of the second latching part, and the second latching part is located radially inward of the second latching part.

[0007] Preferably, the manhole base, the outer fixing part of the manhole cover, and the inner fixing part of the manhole cover are cylindrical; the first buckle two and the second buckle two are arranged in a closed loop around the manhole base; the first buckle one is arranged in a ring around the outer fixing part of the manhole cover, and the second buckle one is arranged in a ring around the inner fixing part of the manhole cover.

[0008] Preferably, it further includes a third latching part, which includes a third latching second disposed on the top of the manhole seat and a third latching first located on the inner sidewall of the manhole cover, wherein the third latching first and the third latching second are adapted to each other.

[0009] Preferably, the first latching part, or / and the second latching part, or / and the third latching part are all provided with sealing rings, and the sealing rings respectively abut against the manhole cover and the manhole base.

[0010] As described above, the present invention relates to a snap-on sealed manhole cover. By pressing or pulling the manhole cover, the engagement of the first and second snap-on parts enables the assembly and disassembly of the manhole cover and the manhole base, avoiding the situation where bolted connections prevent the manhole cover from opening properly if the bolts corrode. The manhole base, the outer fixing part of the manhole cover, and the inner fixing part of the manhole cover are cylindrical. The first and second snap-on parts are arranged in a closed loop around the circumference of the manhole base. The first snap-on part is arranged in a ring around the outer fixing part of the manhole cover, and the second snap-on part is arranged in a ring around the inner fixing part of the manhole cover. The manhole base, the manhole cover body, and the inner fixing part of the manhole cover are connected by the second snap-on parts to form a sealed space with the inspection well. The inner fixing part, the outer fixing part, the manhole cover body, and the manhole base are connected by the first and second snap-on parts to form a second sealed space. The two sealed spaces enhance the sealing function of the manhole cover for the inspection well. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a snap-on sealed manhole cover in an inspection well according to the present invention.

[0012] Figure 2 This is a schematic diagram of a snap-on sealed manhole cover according to the present invention.

[0013] Figure 3 This is a schematic diagram of the manhole cover in this invention.

[0014] Figure 4 This is a schematic diagram of the well base in this invention.

[0015] Explanation of reference numerals in the attached figures:

[0016] 10. Manhole base; 11. Inner support part of manhole base; 12. Outer support part of manhole base; 20. Manhole cover; 21. Manhole cover body; 22. Outer fixing part of manhole cover; 23. Inner fixing part of manhole cover; 30. First snap fastener; 31. First snap fastener one; 32. First snap fastener two; 40. Second snap fastener; 41. Second snap fastener one; 42. Second snap fastener two; 50. Third snap fastener; 51. Third snap fastener one; 52. Third snap fastener two; 60. Inspection well; 61. Sewage pipe; 62. Rainwater ditch; 63. Rainwater ditch cover; 64. Inspection well cover. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0018] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0019] like Figure 1-4 As shown, this invention provides an embodiment of a snap-on sealed manhole cover, including a manhole base 10 pre-embedded in an inspection well 60, a manhole cover 20 covering the manhole base 10, a first snap-on part 30, and a second snap-on part 40. The manhole cover 20 includes a manhole cover body 21 and an outer fixing part 22 and an inner fixing part 23 disposed on the manhole cover body 21; both the outer fixing part 22 and the inner fixing part 23 extend downward from the manhole cover body 21; the manhole base 10 includes a well... The well cover has an inner support part 11 and an outer support part 12; the first buckle part 30 includes a first buckle 31 disposed on the outer fixing part 22 of the well cover and a first buckle 32 disposed on the outer support part 12 of the well cover, the first buckle 31 and the first buckle 32 being adapted to each other; the second buckle part 40 includes a second buckle 41 disposed on the inner fixing part 23 of the well cover and a second buckle 42 disposed on the inner support part 11 of the well cover, the second buckle 41 and the second buckle 42 being adapted to each other.

[0020] Pressing or pulling the manhole cover 20 allows for the assembly and disassembly of the manhole cover 20 and the manhole base 10 through the cooperation of the first latching part 30 and the second latching part 40, avoiding the situation where the manhole cover 20 cannot be opened normally when the bolts are corroded, which is a problem with bolted connections.

[0021] In this embodiment, when both the first latching part 30 and the second latching part 40 are engaged, the first latch 31 is located radially outside the first latch 32, and the second latch 41 is located radially inside the second latch 42.

[0022] By having the first buckle 31 of the outer fixing part 22 of the manhole cover wrap around the first buckle 32 of the outer support part 12 of the manhole seat, and the second buckle 42 of the inner support part 11 of the manhole seat wrap around the second buckle 41 of the inner fixing part 23 of the manhole cover, radial displacement of the manhole cover 20 after it is fixed to the manhole seat 10 can be avoided.

[0023] Preferably, the manhole base 10, the outer fixing part 22 of the manhole cover, and the inner fixing part 23 of the manhole cover are cylindrical; the first buckle 2 32 and the second buckle 2 42 are arranged in a closed loop around the manhole base 10; the first buckle 1 31 is arranged in a ring around the outer fixing part 22 of the manhole cover, and the second buckle 1 41 is arranged in a ring around the inner fixing part 23 of the manhole cover.

[0024] The manhole base 10, the manhole cover body 21, and the inner fixing part 23 are connected by the second snap-fit ​​part 40 to form a sealed space with the inspection well 60. The inner fixing part 23, the outer fixing part 22, the manhole cover body 21, and the manhole base 10 are connected by the first snap-fit ​​part 30 and the second snap-fit ​​part 40 to form a second sealed space. The arrangement of the two sealed spaces enhances the sealing function of the sealed manhole cover 20 for the inspection well 60.

[0025] In this embodiment, the manhole base 10 is gourd-shaped. The innermost annular portion of the manhole base 10 is the inner support portion 11, and the outermost annular portion is the outer support portion 12. The outer fixing portion 22 and the inner fixing portion 23 of the manhole cover are two annular cylinders arranged radially inside and outside the manhole cover body portion 21.

[0026] Preferably, the system further includes a third latching part 50, which includes a second third latch 52 disposed on the top of the manhole base 10 and a first third latch 51 located on the inner wall of the manhole cover 20. The first third latch 51 and the second third latch 52 are adapted to each other. In this embodiment, the connection between the top of the manhole base 10 and the inner wall of the manhole cover 20 through the third latching part 50 further divides the second sealed space into two sealed spaces, thereby enhancing the sealing function of the manhole cover 20. At the same time, the third latching part 50 also enhances the firmness of the connection between the manhole cover 20 and the manhole base 10.

[0027] In this embodiment, the first latching part 30, the second latching part 40 and the third latching part 50 are all provided with sealing rings. The sealing rings abut against the manhole cover 20 and the manhole seat 10 respectively, so as to ensure that the inspection well 60 can be sealed when the manhole cover 20 covers the manhole seat 10.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A snap-on sealed manhole cover, characterized in that, The manhole cover (20) includes a manhole seat (10) pre-embedded in the manhole (60), a manhole cover (20) covering the manhole seat (10), a first snap-fit ​​part (30), and a second snap-fit ​​part (40). The manhole cover (20) includes a manhole cover body part (21) and an outer fixing part (22) and an inner fixing part (23) provided on the manhole cover body part (21). The outer fixing part (22) and the inner fixing part (23) both extend downward from the manhole cover body part (21). The manhole seat (10) includes an inner support part (11) and an outer support part (12). Pressing or pulling the manhole cover (20) allows for the assembly and disassembly of the manhole cover (20) and the manhole seat (10) through the cooperation of the first snap-fit ​​part (30) and the second snap-fit ​​part (40). The first latching part (30) includes a first latch one (31) disposed on the outer fixing part (22) of the manhole cover and a first latch two (32) disposed on the outer support part (12) of the manhole seat, wherein the first latch one (31) and the first latch two (32) are adapted to each other; the second latching part (40) includes a second latch one (41) disposed on the inner fixing part (23) of the manhole cover and a second latch two (42) disposed on the inner support part (11) of the manhole seat, wherein the second latch one (41) and the second latch two (42) are adapted to each other; When both the first latching part (30) and the second latching part (40) are engaged, the first latch (31) is located radially outside the first latch (32), and the second latch (41) is located radially inside the second latch (42). The well base (10), the outer fixing part (22) of the well cover and the inner fixing part (23) of the well cover are cylindrical; the first buckle two (32) and the second buckle two (42) are arranged in a closed loop around the well base (10); the first buckle one (31) is arranged in a ring around the outer fixing part (22) of the well cover and the second buckle one (41) is arranged in a ring around the inner fixing part (23) of the well cover.

2. The snap-on sealed manhole cover according to claim 1, characterized in that, It also includes a third latching part (50), which includes a third latching second (52) disposed on the top of the well seat (10) and a third latching first (51) located on the inner side wall of the well cover (20), and the third latching first (51) and the third latching second (52) are adapted to each other.

3. A snap-on sealed manhole cover according to claim 2, characterized in that, The first latching part (30), or / and the second latching part (40), or / and the third latching part (50) are all provided with sealing rings, which abut against the manhole cover (20) and the manhole seat (10) respectively.

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