Drainage system
By designing a drainage system including a manhole, a manhole cover and a diversion pipe, the problem of being unable to lay rainwater and sewage pipes at the same time in narrow street areas was solved, the thoroughness of rainwater and sewage diversion was achieved, the sewage collection rate was improved, and the living environment was improved.
Patent Information
- Application Number
- CN202421238201.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-31
AI Technical Summary
When rainwater and sewage pipes cannot be laid at the same time in narrow streets in villages and towns, the existing technology is difficult to achieve thoroughness of rainwater and sewage diversion and increase sewage collection rate, resulting in easy fishing points and living environment pollution.
Design a drainage system, including a wellbore, a first manhole cover, a second manhole cover, a rainwater pipe and a sewage pipe. Through the cooperation of the wellbore's segmented structure and seals, the up and down direction diversion and collection of rainwater and sewage can be achieved.
The system solves the problem of the laying of the same as the same as the rain and sewage pipeline and the layout of cross -shelters, improves the diversion effect and collection rate of sewage and rain, avoids mixed rain and dirt, and improves the living environment of narrow areas.
Smart Images
Figure CN222390598U_ABST
Abstract
Description
Technical Field
[0001] The technical field of drainage systems of the embodiments of the utility model, in particular, relates to a drainage system. Background Art
[0002] When laying underground drainage pipelines, the relevant specifications must be followed. When rainwater and sewage pipelines are laid in parallel on the same route, certain clearance requirements must be met. Inspection wells are set at certain intervals at pipeline intersections, bends, changes in pipe diameter or slope, waterfalls, and straight sections. Common inspection wells include reinforced concrete, brick, concrete modular, and plastic drainage inspection wells.
[0003] In the related technology, inspection wells are set up separately for rainwater pipes and sewage pipes. However, when it is impossible to lay rainwater and sewage pipes at the same time in narrow streets in villages and towns, combined rainwater and sewage pipes are generally used for collection, or one of the pipes is abandoned. This will result in incomplete rainwater and sewage separation, low sewage collection rate, and easy generation of salvage points, which will seriously affect the living environment of the area. Summary of the invention
[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.
[0005] To this end, an embodiment of the present invention proposes a drainage system that can be installed in a narrow street area and can collect sewage and rainwater.
[0006] A drainage system according to an embodiment of the present invention includes: a wellbore, which is suitable for being penetrated in the ground; a first manhole cover and a second manhole cover, wherein the first manhole cover is arranged at the upper end of the wellbore so as to cover the wellbore, and the second manhole cover is arranged in the wellbore so that the second manhole cover divides the wellbore into a first tube and a second tube that are independent of each other in the up-down direction, and the first tube is located above the second tube; a rainwater pipe and a sewage pipe, which can be pre-buried in the ground and arranged at intervals in the up-down direction, and the sewage pipe is located below the rainwater pipe, the rainwater pipe is connected to the first tube, and the sewage pipe is connected to the second tube, and a seal is arranged between the outer circumferential surface of the second manhole cover and the inner circumferential surface of the wellbore, so that the seal blocks the first tube.
[0007] The drainage system of the embodiment of the utility model is provided with a manhole, a second manhole cover, a sewage pipe and a rainwater pipe, which solves the above-mentioned problem of the obstruction of laying the rainwater and sewage pipes in the same position and crossing each other in the townships, and improves the diversion effect and collection rate of sewage and rainwater.
[0008] In some embodiments, the drainage system also includes a connecting pipe, which is arranged in the wellbore, and both ends of the connecting pipe are respectively connected to the first tube and the second tube, so that the airflow in the first tube flows into the second tube to make the pressure in the first tube equal to the pressure in the second tube.
[0009] In some embodiments, the connecting pipe extends in the up-down direction, the upper end of the connecting pipe is disposed adjacent to the first manhole cover, and the lower end of the connecting pipe is disposed adjacent to the second manhole cover.
[0010] In some embodiments, the inner circumference of the shaft is provided with a flange extending inward and outward directions, the second manhole cover is provided on the flange, and the outer circumference of the second manhole cover is in contact with the inner circumference of the flange.
[0011] In some embodiments, the sealing member includes a sealing ring, which is sleeved on the outer circumference of the second manhole cover and located between the second manhole cover and the flange.
[0012] In some embodiments, the first tube has a first port and a second port penetrating the tube wall of the first tube along the inside-outside direction, the first port and the second port are spaced opposite to each other along the inside-outside direction and are both connected to the first tube, the rainwater pipe includes a first rainwater pipe and a second rainwater pipe, the first port is connected to the first rainwater pipe so that rainwater in the first rainwater pipe flows into the first tube through the first port, and the second rainwater pipe is connected to the second port so that rainwater in the first tube flows into the second rainwater pipe through the second port.
[0013] In some embodiments, the first port and the second port are disposed adjacent to the second manhole cover, and a first groove extending from the first port toward the second port is disposed on the upper end surface of the second manhole cover, and both ends of the first groove are respectively connected to the first port and the second port, so that rainwater in the first tube flows in the first groove.
[0014] In some embodiments, the second cylinder has a third port and a fourth port penetrating the cylinder wall of the second cylinder along the inner-outer direction, the third port and the fourth port are spaced opposite to each other along the inner-outer direction and are both connected to the second cylinder, the sewage pipe includes a first sewage pipe and a second sewage pipe, the third port is connected to the first sewage pipe so that the sewage in the first sewage pipe flows into the second cylinder through the third port, and the second sewage pipe is connected to the fourth port so that the sewage in the second cylinder flows into the second sewage pipe through the fourth port.
[0015] In some embodiments, the third port and the fourth port are arranged adjacent to the bottom surface of the second tube, and the bottom surface of the second tube is provided with a second groove extending from the third port toward the fourth port, and both ends of the second groove are respectively connected to the third port and the fourth port, so that rainwater in the second tube flows in the second groove.
[0016] In some embodiments, the drainage system further comprises a pull ring, which is disposed on the upper end surface of the second manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a top view of the drainage system of the utility model.
[0018] Figure 2 yes Figure 1 Sectional view of AA.
[0019] Figure 3 yes Figure 1 Cross-sectional view of BB.
[0020] Drainage system 100;
[0021] Wellbore 1; first tube 11; second tube 12; second groove 13; flange 14;
[0022] First manhole cover 2;
[0023] Second manhole cover 3; first groove 31;
[0024] Rainwater pipe 4; first rainwater pipe 41; second rainwater pipe 42;
[0025] Sewage pipe 5; first sewage pipe 51; second sewage pipe 52; sealing member 6; connecting pipe 8. DETAILED DESCRIPTION
[0026] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0027] The following describes a drainage system 100 according to an embodiment of the present invention with reference to the accompanying drawings.
[0028] like Figure 1-3 As shown, the drainage system 100 according to an embodiment of the present invention includes a wellbore 1, a first well cover 2, a second well cover 3, a rainwater pipe 4, a sewage pipe 5, and a sealing member 6.
[0029] The wellbore 1 is suitable for being penetrated in the ground. Figure 1-3 As shown, the wellbore 1 is a circular tube extending in the up-down direction, and the wellbore 1 is suitable for being penetrated in the ground.
[0030] The first manhole cover 2 is arranged at the upper end of the shaft 1 to cover the shaft 1, and the second manhole cover 3 is arranged in the shaft 1 so that the second manhole cover 3 divides the shaft 1 into a first tube 11 and a second tube 12 which are independent of each other in the vertical direction, and the first tube 11 is located above the second tube 12. Specifically, Figure 1-3 As shown, the first manhole cover 2 is a circular manhole cover which is placed at the upper end of the well shaft 1 to cover the well shaft 1 to prevent people or animals from falling into the well shaft 1 or to prevent external garbage from falling into the well shaft 1. The second manhole cover 3 is a circular manhole cover which is placed in the middle of the well shaft 1 to divide the well shaft 1 into a first tube 11 and a second tube 12. The first tube 11 is located above the second tube 12.
[0031] The rainwater pipe 4 and the sewage pipe 5 can be pre-buried in the ground and arranged at intervals in the vertical direction. The sewage pipe 5 is located below the rainwater pipe 4. The rainwater pipe 4 is connected to the first tube 11, and the sewage pipe 5 is connected to the second tube 12. Specifically, Figure 1-3 As shown, the first cylinder 11 can be connected with the rainwater pipe 4, and the rainwater in the rainwater pipe 4 can flow into the first cylinder 11 and then into the rainwater pipe 4, so that the rainwater pipe 4 can be cleaned through the first cylinder 11, and the second cylinder 12 is connected with the sewage pipe 5, and the sewage in the sewage pipe 5 can flow into the second cylinder 12 and then into the sewage pipe 5, so that the sewage pipe 5 can be cleaned through the second cylinder 12.
[0032] The seal 6 is disposed between the outer circumference of the second manhole cover 3 and the inner circumference of the shaft 1, so that the seal 3 blocks the first shaft 11. Thus, the second manhole cover 3 and the shaft 1 are sealed by the seal to prevent rainwater in the first shaft 11 from flowing into the second shaft 12.
[0033] The drainage system 100 of the utility model embodiment is provided with a manhole 1, a second manhole cover 3, a sewage pipe 5 and a rainwater pipe 4. By arranging the sewage pipe 5 and the rainwater pipe 4 up and down and arranging the first tube 11 and the second tube 12 up and down, the underground space is reasonably utilized, so that rainwater and sewage are collected separately in the upper and lower directions, solving the above-mentioned problem of the obstruction of laying the rainwater and sewage pipes in the same position and crossing each other in the townships, improving the diversion effect and collection rate of sewage and rainwater, without the need for power equipment, and equipped with automatic control facilities, it can be realized without human operation, reducing the burden of later operation and maintenance.
[0034] In some embodiments, the inner circumference of the shaft 1 is provided with a flange 14 extending inward and outward directions, the second manhole cover 3 is provided on the flange 14, and the outer circumference of the second manhole cover 3 is in contact with the inner circumference of the flange 14. Figure 2-3As shown, the flange 14 is arranged on the inner circumferential surface of the middle part of the wellbore 1, and the flange 14 extends into a ring shape along the circumference of the wellbore 1, and the second manhole cover 3 is inserted into the flange 14 and the outer circumferential surface of the second manhole cover 3 and the inner circumferential surface of the flange 14 are fitted together. Thus, the cooperation between the second manhole cover 3 and the flange divides the wellbore 1 into a first tube 11 and a second tube 12, making the setting of the drainage system 100 more reasonable.
[0035] It is worth mentioning that the flange 14 can be divided into a first flange and a second flange along the up and down directions. The first flange is located below the second flange. In the projection plane orthogonal to the up and down directions, the projection of the first flange is located inside the second flange (in other words, the size of the first flange in the inner and outer directions is larger than the size of the second flange in the inner and outer directions). When the second manhole cover 3 is arranged in the wellbore 1, the inner circumferential surface of the second flange and the outer circumferential surface of the second manhole cover 3 are fitted, and the second manhole cover 3 is arranged on the first flange, thereby ensuring the stability of the installation of the second manhole cover 3.
[0036] In some embodiments, Figure 2-3 As shown, the seal 6 includes a sealing ring, which is sleeved on the outer circumference of the second manhole cover 3 and located between the second manhole cover 3 and the flange. Thus, the second manhole cover 3 and the flange are sealed by the sealing ring to prevent rainwater in the first tube 11 from flowing into the second tube 12.
[0037] In some embodiments, the drainage system 100 further includes a connecting pipe 8, which is disposed in the wellbore 1, and the two ends of the connecting pipe 8 are respectively connected to the first tube 11 and the second tube 12, so that the airflow in the first tube 11 flows into the second tube 12 to make the pressure in the first tube 11 equal to the pressure in the second tube 12. Specifically, Figure 1 As shown, the connecting pipe 8 is a ventilation pipe, and the connecting pipe 8 is passed through the flange, the upper end of the connecting pipe 8 is connected to the first tube 11, and the lower end of the connecting pipe 8 is connected to the second tube 12. Therefore, the connecting pipe 8 is used to ensure that the pressure in the first tube 11 is equal to the pressure in the second tube 12, thereby preventing the pressure in the second tube 12 from being too low, which makes it impossible to take the second manhole cover 3 out of the first tube 11.
[0038] In some embodiments, the connecting pipe 8 extends in the up-down direction, the upper end of the connecting pipe 8 is disposed adjacent to the first manhole cover 2, and the lower end of the connecting pipe 8 is disposed adjacent to the second manhole cover 3. Figure 2 As shown, the connecting pipe 8 is a vertical pipe extending in the up-down direction. The upper end of the connecting pipe 8 is arranged adjacent to the first manhole cover 2 to prevent rainwater in the first tube 11 from flowing into the second tube 12 through the connecting pipe 8. The lower end of the connecting pipe 8 is arranged adjacent to the second manhole cover 3 to prevent the sewage in the second tube 12 from being too high. The lower end of the connecting pipe 8 may extend into the sewage, causing the connecting pipe to be unable to play a connecting role.
[0039] In some embodiments, the first tube 11 has a first opening and a second opening that penetrate the tube wall of the first tube 11 along the inner and outer directions, and the first opening and the second opening are spaced opposite to each other along the inner and outer directions and are both connected to the first tube 11, so that rainwater flows into the first tube 11 through the first opening and flows out of the first tube 11 through the second opening, and the rainwater pipe 4 includes a first rainwater pipe 41 and a second rainwater pipe 42, the first opening is connected to the first rainwater pipe 41, so that rainwater in the first rainwater pipe 41 flows into the first tube 11 through the first opening, and the second rainwater pipe 42 is connected to the second opening, so that rainwater in the first tube 11 flows into the second rainwater pipe 42 through the second opening. Specifically, as Figure 2 As shown, the first port is arranged at the left end of the first cylinder 11, and the second port is arranged at the right end of the first cylinder 11. The first port is connected with the first rainwater pipe 41, so that the rainwater in the first rainwater pipe 41 flows into the first cylinder 11 through the first port, and the second port is connected with the second rainwater pipe 42, so that the rainwater in the first cylinder 11 flows into the second rainwater pipe 42 through the second port, so that the rainwater flows through the first rainwater pipe 41, the first cylinder 11 and the second sewage pipe 52 in sequence to collect rainwater.
[0040] In some embodiments, the first opening and the second opening are disposed adjacent to the second manhole cover 3, and the upper end surface of the second manhole cover 3 is provided with a first groove 31 extending from the first opening toward the second opening, and both ends of the first groove 31 are respectively connected to the first opening and the second opening, so that rainwater in the first tube 11 flows in the first groove 31. Specifically, Figure 2 As shown, the first port and the second port are disposed adjacent to the second manhole cover 3 (in other words, the first port and the second port are disposed adjacent to the bottom of the first tube 11), the upper end surface of the flange and the upper end surface of the second flange define the bottom surface of the first tube 11, and the bottom surface of the first tube 11 is provided with a first groove 31 extending in the left-right direction, the left end of the first groove 31 is connected to the first port, and the right end of the first groove 31 is connected to the second port, whereby, when rainwater flows into the first tube 11, the rainwater can flow in the first groove 31 to transport the rainwater in the first tube 11.
[0041] In some embodiments, the second cylinder 12 has a third port and a fourth port that penetrate the cylinder wall of the second cylinder 12 along the inside-outside direction. The third port and the fourth port are spaced opposite to each other along the inside-outside direction and are both connected to the second cylinder 12, so that rainwater flows into the second cylinder 12 through the third port and flows out of the second cylinder 12 through the fourth port. The sewage pipe 5 includes a first sewage pipe 51 and a second sewage pipe 52. The third port is connected to the first sewage pipe 51, so that the sewage in the first sewage pipe 51 flows into the second cylinder 12 through the third port. The second sewage pipe 52 is connected to the fourth port, so that the sewage in the second cylinder 12 flows into the second sewage pipe 52 through the fourth port.
[0042] Specifically, Figure 2As shown, the third port is arranged at the left end of the second cylinder 12, and the fourth port is arranged at the right end of the second cylinder 12. The third port is connected with the first sewage pipe 51, so that the sewage in the first sewage pipe 51 flows into the second cylinder 12 through the third port. The fourth port is connected with the second sewage pipe 52, so that the sewage in the second cylinder 12 flows into the second sewage pipe 52 through the fourth port. The sewage flows through the first sewage pipe 51, the second cylinder 12 and the second sewage pipe 52 in sequence to collect the sewage.
[0043] In some embodiments, the third port and the fourth port are disposed adjacent to the bottom surface of the second tube 12, and the bottom surface of the second tube 12 is provided with a second groove 13 extending from the third port toward the fourth port, and both ends of the second groove 13 are respectively connected to the third port and the fourth port, so that rainwater in the second tube 12 flows in the second groove 13. Specifically, Figure 2 As shown, the third port and the fourth port are arranged adjacent to the second manhole cover 3, and the bottom surface of the second cylinder 12 is provided with a second groove 13 extending in the left-right direction, the left end of the second groove 13 is connected with the third port, and the right end of the second groove 13 is connected with the fourth port, thereby, when sewage flows into the second cylinder 12, the sewage can flow in the second groove 13 to transport the sewage in the second cylinder 12.
[0044] In some embodiments, the drainage system 100 further includes a pull ring 7, which is disposed on the upper end surface of the second manhole cover 3. Figure 2-3 As shown, there are two pull rings 7 , and the two pull rings 7 are arranged at intervals on the upper end surface of the second manhole cover 3 along the left-right direction, so that the second manhole cover 3 can be taken out from the shaft 1 through the two pull rings 7 .
[0045] In some embodiments, the first manhole cover 2 is provided with a drainage hole (not shown in the figure) penetrating the first manhole cover 2 in the up-down direction, so that rainwater can flow into the first tube 11 through the first manhole cover 2 .
[0046] The following is based on the attached Figure 1-3 The drainage system 100 will be described in detail.
[0047] The drainage system 100 includes a first manhole cover 2 , a second manhole cover 3 , a well shaft 1 , and a connecting pipe 8 .
[0048] The shaft 1 can be divided into a first shaft 11 and a second shaft 12. The first shaft 11 is mainly used to receive rainwater collected by the rainwater pipe 4. A second shaft cover 3 is provided at the junction of the upper and lower layers. When the second shaft cover 3 is opened, the second shaft 12 is located below the second shaft cover 3, which is a sewage collection area.
[0049] The rainwater pipe 4 is located at the bottom of the first tube 11 and is used to collect rainwater in the narrow area. The sewage pipe 5 is located at the bottom of the second tube 12 and is used to collect domestic sewage from residents in the narrow area.
[0050] A first manhole cover 2 is set on the top of the drainage system 100, and the height of the drainage system 100 is set according to the narrow area. If the narrow area is a thoroughfare, the first manhole cover 2 should be flush with the road. If the drainage system 100 is located in a low-lying area such as a green space, it can be appropriately 10-20 cm higher than the ground.
[0051] The second manhole cover 3 is provided with a sealing ring and a pull ring 7. In order to ensure the ventilation and safety of the sewage area and the convenience of opening the inner manhole cover, a connecting pipe 8 connecting the upper and lower rainwater sewage areas is set on the side of the second manhole cover 3, and the connecting pipe 8 is 5cm-10cm lower than the first manhole cover 2. The second manhole cover 3 has a first groove 31, which is designed to meet the hydraulic characteristics of rainwater discharge. A pull ring 7 is set above the second manhole cover 3 to facilitate the opening of the manhole cover, and the lower part of the second manhole cover 3 is a sealing ring, which physically separates rainwater and sewage to avoid mixing of rainwater and sewage. Ensure the normal collection and transportation of rainwater and sewage.
[0052] The rainwater and sewage drainage system 100 can also be used as a cross well. It only needs to be laid crosswise according to the actual direction of the rainwater and sewage. The internal structure of the drainage system 100 remains unchanged. Only the 5 overlapping rainwater and sewage pipes are changed to a cross direction, which saves space and facilitates project implementation.
[0053] In summary, the drainage system 100 of the embodiment of the utility model has a simple structure, small footprint, and is easy to operate and install; it has a good rainwater and sewage diversion effect and a high sewage collection rate; it does not require power equipment and is equipped with automatic control facilities, which can be unattended and reduce the burden of later operation and maintenance. The rainwater and sewage pipes 5 can be laid in narrow areas without the need to combine rainwater and sewage or abandon certain pipes. The sewage collection rate is guaranteed, which improves the living environment in narrow areas and ensures the normal implementation of drainage projects.
[0054] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0058] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.
Claims
1. A drainage system, characterized in that: include: A wellbore, the wellbore is suitable for being penetrated in the ground; a first manhole cover and a second manhole cover, the first manhole cover is arranged at the upper end of the wellbore so as to cover the wellbore, the second manhole cover is arranged in the wellbore so that the second manhole cover divides the wellbore into a first tube and a second tube that are independent of each other in the up-down direction, the first tube is located above the second tube; a rainwater pipe and a sewage pipe, the rainwater pipe and the sewage pipe can be pre-buried in the ground and arranged at intervals in the up-down direction, the sewage pipe is located below the rainwater pipe, the rainwater pipe is connected to the first tube, and the sewage pipe is connected to the second tube; a sealing member, the sealing member is arranged between the outer circumference of the second manhole cover and the inner circumference of the wellbore, so that the sealing member blocks the first tube.
2. The drainage system according to claim 1, characterized in that: It also includes a connecting pipe, which is arranged in the wellbore, and the two ends of the connecting pipe are respectively connected to the first tube and the second tube, so that the airflow in the first tube flows into the second tube to make the pressure in the first tube equal to the pressure in the second tube.
3. The drainage system according to claim 2, characterized in that: The connecting pipe extends in the up-down direction, the upper end of the connecting pipe is arranged adjacent to the first manhole cover, and the lower end of the connecting pipe is arranged adjacent to the second manhole cover.
4. The drainage system according to claim 1, characterized in that: The inner circumferential surface of the shaft is provided with a flange extending inward and outward directions, the second shaft cover is arranged on the flange, and the outer circumferential surface of the second shaft cover is in contact with the inner circumferential surface of the flange.
5. The drainage system according to claim 4, characterized in that: The sealing member comprises a sealing ring, which is sleeved on the outer circumferential surface of the second manhole cover and is located between the second manhole cover and the flange.
6. The drainage system according to claim 1, characterized in that: The first tube has a first opening and a second opening penetrating through the tube wall of the first tube in the inner and outer directions, the first opening and the second opening are spaced opposite to each other in the inner and outer directions and are both connected to the first tube. The rainwater pipe includes a first rainwater pipe and a second rainwater pipe. The first port is connected to the first rainwater pipe so that rainwater in the first rainwater pipe flows into the first tube through the first port. The second rainwater pipe is connected to the second port so that rainwater in the first tube flows into the second rainwater pipe through the second port.
7. The drainage system according to claim 6, characterized in that: The first port and the second port are disposed adjacent to the second manhole cover, and a first groove extending from the first port toward the second port is disposed on the upper end surface of the second manhole cover, and both ends of the first groove are respectively connected to the first port and the second port, so that rainwater in the first tube flows in the first groove.
8. The drainage system according to claim 1, characterized in that: The second tube has a third port and a fourth port penetrating the tube wall of the second tube in the inner and outer directions, the third port and the fourth port are spaced opposite to each other in the inner and outer directions and are both connected to the second tube. The sewage pipe includes a first sewage pipe and a second sewage pipe. The third port is connected to the first sewage pipe so that the sewage in the first sewage pipe flows into the second cylinder through the third port. The second sewage pipe is connected to the fourth port so that the sewage in the second cylinder flows into the second sewage pipe through the fourth port.
9. The drainage system according to claim 8, characterized in that: The third port and the fourth port are arranged adjacent to the bottom surface of the second tube. The bottom surface of the second tube is provided with a second groove extending from the third port toward the fourth port, and both ends of the second groove are respectively connected to the third port and the fourth port, so that rainwater in the second tube flows in the second groove.
10. The drainage system according to claim 1, characterized in that: It also includes a pull ring, which is arranged on the upper end surface of the second manhole cover.