Municipal road anti-reverse-surge drainage system and using method thereof

Abstract

The invention relates to the field of municipal drainage, in particular to a municipal road anti-reverse-gushing drainage system and a using method thereof.The municipal road anti-reverse-gushing drainage system comprises a barrel, a well lid is installed at the top of the barrel in a matched mode, and a drainage pipe is arranged at the bottom of the barrel; the partition plate is arranged on the inner wall of the barrel body; a top water inlet of the spiral water guide pipe is flush with the upper surface of the partition plate, and a bottom water outlet section of the spiral water guide pipe is provided with a water filtering section; the sediment box is arranged in the barrel body and communicated with the water filtering section in a one-way mode, an overflow pipe extending out of the barrel body is arranged on the sediment box, and water in the overflow pipe flows outwards in a one-way mode; and the one-way water guide mechanism is arranged in the barrel body and located below the sediment box, and a reverse gushing pipe communicated with the sediment box in a guiding mode is arranged on the one-way water guide mechanism. According to the self-cleaning device, silt in water is further filtered, the blocking risk of the main drainage pipe can be reduced, the silt is concentrated in the silt box, self-cleaning is conducted through back flushing and large-rainfall drainage, the silt box basically does not need to be manually cleaned, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal drainage, and in particular to a municipal road backflow prevention drainage system and a use method thereof. Background Art

[0002] There are many reasons for backflow in municipal road drainage systems (i.e. sewage or rainwater flows back from inspection wells, rainwater outlets, etc. to the road surface), such as blockage of drainage pipes, too low water outlets of drainage pipes, etc. Backflow is not just as simple as water overflowing onto the road surface, it is often accompanied by a strong odor, affecting the normal use of the road.

[0003] A Chinese patent with publication number CN118581963A discloses a road backflow prevention drainage system and construction method, including a well body, a water outlet is provided on the surface of inclined plate one, a backflow prevention component is arranged at the bottom of inclined plate one and below the water outlet, the inner wall of the well body is connected to a rotating shaft by fixed axis rotation, a plurality of blades are evenly arranged on the surface of the rotating shaft, a storage box is fixedly connected to the inner wall of the well body, a cleaning plate is fixedly connected to the surface of a connecting rod, a swinging component is arranged in the well body, and the connecting rod and the cleaning plate are reciprocated by the movement of the swinging component to clean inclined plate two, avoid clogging of the surface of inclined plate two, ensure the drainage effect of the well body, drive the cleaning plate to move by the impact of rainwater, and achieve energy saving without using additional energy. When the water volume is large, the water outlet is blocked by setting a baffle to avoid backflow and ensure the normal use of the road.

[0004] However, the above-mentioned publicly disclosed scheme has the following shortcomings: inclined plate 2 filters water, and foreign matter will inevitably accumulate on inclined plate 2 (such as branches, leaves, mud, etc.). It is difficult to achieve good work by using the gravity of falling water to drive the rotation of related structural parts to provide power, because in many cases the rainfall is small and the drainage volume is small. In this case, the cleaning process is very slow, inclined plate 2 is still easy to be blocked, and the rotating structure itself is easy to be entangled by foreign matter and cause jamming, which will also cause the cleaning function to fail, aggravating the blocking process of inclined plate 2, resulting in failure to drain water smoothly and increasing the frequency of manual processing. In addition, the storage box needs to be manually cleaned from time to time, otherwise inclined plate 2 will inevitably be blocked, making it more troublesome to use. Summary of the invention

[0005] The purpose of the present invention is to address the problem in the background technology that foreign matter in drainage filtration blocks the filter plate and the foreign matter needs to be manually cleaned, and to propose a municipal road backflow prevention drainage system and a method of using the same.

[0006] On the one hand, the present invention provides a municipal road backflow prevention drainage system, comprising a barrel body, a manhole cover is installed on the top of the barrel body, and a drainage pipe is arranged at the bottom of the barrel body; and further comprising:

[0007] A partition plate is arranged on the inner wall of the barrel;

[0008] The spiral water guide pipe is arranged at the bottom of the partition, the water inlet at the top of the spiral water guide pipe is flush with the upper surface of the partition, and the water outlet section at the bottom of the spiral water guide pipe is provided with a water filtering section;

[0009] The sediment box is arranged inside the barrel body and is in one-way communication with the water filtering section. An overflow pipe extending outside the barrel body is arranged on the sediment box, and water in the overflow pipe flows outward in one-way;

[0010] And a one-way water guide mechanism is arranged in the barrel body and below the sediment box, and a backflow pipe which is in conduction with the sediment box is arranged on the one-way water guide mechanism.

[0011] Preferably, it also includes a main drainage pipe, on which a plurality of connecting pipes are arranged, and the drainage pipes and the connecting pipes are connected.

[0012] Preferably, a sewage interception hanging basket is arranged on the top of the barrel body, and the sewage interception hanging basket is located above the partition.

[0013] Preferably, the mud and sand box is connected via a connecting column and a sealing plate, a through hole for the mud and sand box to pass through is provided on the peripheral wall of the barrel body, and the sealing plate closes the through hole and is connected to the outer wall of the barrel body.

[0014] Preferably, the one-way water guide mechanism includes a conical flow guide cover arranged on the inner wall of the barrel body, and a one-way valve c arranged at the bottom outlet of the conical flow guide cover, and the bottom of the backflow pipe is connected to the space below the conical flow guide cover.

[0015] Preferably, the parameters are defined as follows: the resistance of water in the filtration section entering the sediment box is F1, the resistance of water in the overflow pipe to be discharged is F2, the water flow resistance of the one-way water guide mechanism is F3, and the resistance of water in the backflow pipe to flow into the sediment box is F4; F1=F3<F2, F4=2×F1.

[0016] Preferably, the one-way valve c is a flap-type one-way valve.

[0017] On the other hand, the present invention provides a method for using a municipal road backflow prevention drainage system, comprising the following steps:

[0018] S1. Place the one-way water guide mechanism into the barrel from the top and install it;

[0019] S2. Place the baffle and spiral water pipe into the barrel from the top and install them;

[0020] S3, insert the sediment box into the barrel from the side, and connect the sediment box with the water filtration section and the backflow pipe;

[0021] S4. Cover the manhole cover and put the assembled whole into the rainwater well for use.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects: by further filtering the sediment in the water, the risk of blockage of the main drainage pipe can be reduced, and the failure rate of the overall drainage system can be reduced; the sediment is concentrated in the sediment box, which can be self-cleaned through heavy rainfall and even through backflow, and is particularly suitable for use in places with heavy rainfall; the sediment box basically does not require manual cleaning and is easy to use; the only thing that needs to be cleaned is the sewage interception basket, which is simple to clean and can be cleaned by opening the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0024] Figure 2 and Figure 3 All of them are schematic diagrams of the internal structure of the barrel;

[0025] Figure 4 for Figure 2 A schematic diagram of the cutaway structure without any separation;

[0026] Figure 5 It is a structural diagram of a one-way valve.

[0027] Figure numerals: 1. barrel body; 2. flange; 3. manhole cover; 4. drain pipe; 5. main drain pipe; 6. flange; 7. connecting pipe; 8. sewage interception basket; 9. partition; 10. spiral water guide pipe; 11. water filter section; 12. sediment box; 13. one-way valve a; 14. plug-in tube a; 15. one-way valve b; 16. plug-in tube b; 17. backflow pipe; 18. conical guide cover; 19. mounting ring; 20. one-way valve c; 21. sealing plate; 22. connecting column; 23. overflow pipe; 24. box body; 25. one-way valve d; 26. U-shaped frame; 27. rotating shaft; 28. limiting ring; 29. ​​torsion spring; 30. flap; 31. sealing plate; 32. screw. DETAILED DESCRIPTION

[0028] Embodiment 1, as Figure 1-Figure 4 As shown, a municipal road backflow prevention and drainage system proposed by the present invention includes a barrel body 1, a manhole cover 3 is installed on the top of the barrel body 1, and a drainage pipe 4 is arranged at the bottom of the barrel body 1. Specifically, a flange 2 is arranged on the top of the barrel body 1, and the manhole cover 3 is inserted into the flange 2. When in use, the barrel body 1 is installed in the rainwater well, and the manhole cover 3 is flush with the ground; and also includes:

[0029] The partition 9 is arranged on the inner wall of the barrel body 1. The partition 9 is connected to the inner wall of the barrel body 1 by threads, and can also be connected by a supporting platform, which is determined according to the shape of the barrel body 1;

[0030] The spiral water pipe 10 is arranged at the bottom of the partition 9, the water inlet at the top of the spiral water pipe 10 is flush with the upper surface of the partition 9, and the water filter section 11 is arranged at the water outlet section at the bottom of the spiral water pipe 10. The water filter section 11 is a porous pipe for supplying water to pass through while blocking sediment;

[0031] The silt box 12 is arranged in the barrel body 1 and is in one-way communication with the water filtering section 11, that is, water and silt can only enter the silt box 12 from the water filtering section 11, but cannot enter the water filtering section 11 from the silt box 12. Specifically, a plug-in tube a14 is arranged on the silt box 12, and the water filtering section 11 is inserted into the plug-in tube a14. A one-way valve a13 for closing the water outlet of the plug-in tube a14 is arranged on the inner wall of the silt box 12. An overflow pipe 23 extending to the outside of the barrel body 1 is arranged on the silt box 12. The overflow pipe 23 is arranged on the silt box 12. The water in the pipe 23 flows outward in a one-way manner. Specifically, a box body 24 is arranged in the middle of the overflow pipe 23, and a one-way valve d25 is arranged in the box body 24; the silt box 12 is connected to the sealing plate 21 through a connecting column 22, and a through hole for the silt box 12 to pass through is arranged on the peripheral wall of the barrel body 1, and the sealing plate 21 closes the through hole and is connected to the outer wall of the barrel body 1. Specifically, a plurality of horizontal studs are fixedly arranged on the outer wall of the barrel body 1, and a plurality of mounting holes for the studs to pass through are arranged on the sealing plate 21, and then locked with nuts;

[0032] And a one-way water guide mechanism is arranged in the barrel body 1 and below the silt box 12, on which a backflow pipe 17 is arranged to guide and conduct with the silt box 12, that is, water can only enter the silt box 12 through the backflow pipe 17, but cannot enter the backflow pipe 17 from the silt box 12. Specifically, a horizontal section is arranged on the top of the backflow pipe 17, and a plug-in tube b16 is arranged on the silt box 12. The plug-in tube b16 is inserted into the horizontal section of the backflow pipe 17, and a one-way valve b15 for closing the plug-in tube b16 is arranged on the inner wall of the silt box 12.

[0033] Furthermore, it also includes a main drain pipe 5, on which a plurality of connecting pipes 7 are arranged, and the drain pipe 4 is connected to the connecting pipe 7. Specifically, a butt-joint pipe is screwed into the drain pipe 4, and flanges 6 are arranged at the ends of the butt-joint pipe and the connecting pipe 7, and the two flanges 6 are connected. By rotating the butt-joint pipe, the distance between the drain pipe 4 and the main drain pipe 5 can be adjusted to adapt to the installation environment on site.

[0034] Furthermore, a sewage interception hanging basket 8 is arranged on the top of the barrel body 1, and the sewage interception hanging basket 8 is located above the partition 9. The form of the sewage interception hanging basket 8 is determined according to the shape of the barrel body 1, and the barrel body 1 is determined according to the shape of the rainwater well. When the horizontal cross-section of the rainwater well is square, the barrel body 1 and the sewage interception hanging basket 8 are both square. When the horizontal cross-section of the rainwater well is circular, the barrel body 1 is also circular. The sewage interception hanging basket 8 is a truncated cone with a larger top and a smaller bottom. There are several hooks on the sewage interception hanging basket 8, and several strip grooves are opened on the top of the barrel body 1, and the hooks are stuck in the strip grooves.

[0035] Embodiment 2, as Figure 4As shown, a municipal road backflow prevention and drainage system proposed by the present invention, compared with the first embodiment, this embodiment introduces the structure of the one-way water guide mechanism in detail.

[0036] The one-way water guide mechanism includes a conical flow guide cover 18 arranged on the inner wall of the barrel body 1, and a one-way valve c20 arranged at the bottom outlet of the conical flow guide cover 18, and the bottom of the backflow pipe 17 is connected to the space below the conical flow guide cover 18; specifically, a mounting ring 19 is arranged on the inner wall of the barrel body 1, and the conical flow guide cover 18 is placed on the mounting ring 19 from above, and the conical flow guide cover 18 and the mounting ring 19 are connected by bolts.

[0037] Embodiment three, as Figure 5 As shown, a municipal road backflow prevention drainage system proposed by the present invention, compared with the second embodiment, this embodiment introduces in detail the conduction resistance relationship between multiple one-way valves.

[0038] Defined parameters: the resistance of water in the filtration section 11 entering the sediment box 12 is F1, the resistance of water in the overflow pipe 23 to be discharged is F2, the water flow resistance of the one-way water guide mechanism is F3, and the resistance of water in the backflow pipe 17 to flow into the sediment box 12 is F4; F1=F3<F2, F4=2×F1.

[0039] The one-way valve c20 is a flap-type one-way valve, which specifically includes a U-shaped frame 26, a rotating shaft 27, a torsion spring 29, a flap 30 and a screw 32; the rotating shaft 27 is rotatably arranged on the U-shaped frame 26, a limit ring 28 is arranged on the rotating shaft 27, and a plurality of screws 32 are arranged on the U-shaped frame 26. A mounting frame needs to be arranged at the position where the one-way valve needs to be installed, and the screw 32 passes through the mounting frame and is then locked and fixed by a nut. The torsion spring 29 is sleeved on the rotating shaft 27, and the two ends of the torsion spring 29 are respectively connected to the U-shaped frame 26 and the limit ring 28, and the flap 30 is connected to the U-shaped frame 26 and the limit ring 28. 0 is arranged on the rotating shaft 27, and a sealing plate 31 is arranged on the flap 30, and the sealing plate 31 closes the water outlet; in this embodiment, the one-way valve a13, the one-way valve b15, the one-way valve c20 and the one-way valve d25 have the same structure, but the torsion force of the torsion spring 29 is different, so as to adjust the sealing force of the sealing plate 31, and then change the numerical values ​​of F1, F2, F3, and F4. The size of F3 is sufficient to ensure that the conical guide cover 18 can be opened when it is full of water, and F1, F2, and F4 can be adjusted according to F3.

[0040] Embodiment 4, a method for using a municipal road backflow prevention drainage system proposed by the present invention, specifically comprises the following steps:

[0041] S1, put the one-way water guide mechanism into the barrel body 1 from the top and install it;

[0042] S2, put the partition 9 and the spiral water pipe 10 into the barrel body 1 from the top of the barrel body 1 and install them;

[0043] S3, insert the sediment box 12 into the barrel body 1 from the side, and connect the sediment box 12 with the water filtering section 11 and the backflow pipe 17;

[0044] S4, after installing the sewage interception hanging basket 8, cover the well cover 3, and put the assembled whole into the rainwater well for use.

[0045] In summary, when the present invention is used, the top flange of the conical deflector 18 is attached to the mounting ring 19, and then locked by bolts or screws, and then the partition 9 and the spiral water guide pipe 10 are placed into the barrel body 1 from the top and installed. Specifically, when the barrel body 1 is a round barrel, the threaded connection is completed by rotating the partition 9 until the partition 9 can no longer rotate. When the barrel body 1 is square, several supporting bosses are pre-processed on the inner wall of the barrel body 1, and the partition 9 is placed on the supporting bosses, and then fixed by bolts or screws. It is necessary to pay attention to the angle of the spiral water guide pipe 10 so that the water filtering section 11 is located on the backflow pipe 1. 7 is directly above the top horizontal section; then, the sediment box 12 is inserted into the barrel body 1 from the side, the plug-in pipe a14 and the water filtering section 11 are plugged in, the plug-in pipe b16 and the top of the backflow pipe 17 are plugged in, the sealing plate 21 is attached to the outer wall of the barrel body 1 for sealing, and the sealing plate 21 is locked by screws and nuts. In order to improve the sealing effect, an elastic sealing layer is provided on the inner wall of the sealing plate 21; after installing the sewage interception hanging basket 8, the manhole cover 3 is covered, and the assembled whole is put into the rainwater well for use. After the rainwater passes through the manhole cover 3 and the sewage interception hanging basket 8, it is accelerated by the spiral water guide pipe 10 and mainly falls from the water filtering section 11, and a small part of the water and sediment The impact of the one-way valve a13 brings the silt into the silt box 12, and the water then flows through the one-way valve c20 and the drain pipe 4 into the main drain pipe 5 for discharge. When backflow occurs, the one-way valve c20 is closed, and the one-way valve b15 is opened under the larger backflow pressure. The backflow high-pressure water impacts the silt deposited in the silt box 12 and then is discharged through the overflow pipe 23 to complete the cleaning of the silt. When the drainage is normal and smooth, rainwater will not accumulate in the barrel body 1, the one-way valve d25 will not open, and no overflow will occur. When the drainage volume is large and the water cannot be quickly discharged in the barrel body 1, the liquid level rises to above the silt box 12, and under the action of water pressure, The overflow pipe 23 starts to drain water, and the two drainage places improve the drainage efficiency. In the drainage process, since the flap 30 of the silt box 12 is opened downward, the water flows into the silt box 12 and impacts the silt downward, thereby taking away the silt and completing the self-cleaning of the silt box 12. As long as there is backflow and the drainage volume exceeds the maximum drainage speed, the silt box 12 can clean itself, and basically no manual cleaning is required. What needs to be cleaned manually is the sewage intercepting hanging basket 8. If the silt box 12 really needs to be cleaned, it is also very convenient. Just pull out the sealing plate 21 to take out the silt box 12. However, it should be noted that external operating space needs to be reserved in advance.In the present invention, by further filtering the sediment in the water, the risk of blockage of the main drainage pipe 5 can be reduced, and the failure rate of the overall drainage system can be reduced. The sediment is concentrated in the sediment box 12, which can be self-cleaned by heavy rainfall or even by backflow. It is particularly suitable for use in places with heavy rainfall. The sediment box 12 basically does not require manual cleaning and is easy to use. Only the sewage interception basket 8 needs to be cleaned. The sewage interception basket 8 is simple to clean and can be cleaned by opening the manhole cover 3. Compared with the structure disclosed in the prior art that is difficult to clean, it has obvious advantages. When water flows out of the overflow pipe 23, attention should be paid. Backflow may have occurred at this time, and the fault should be checked in time. The drainage condition of the overflow pipe 23 can be monitored by setting monitoring means, such as installing sensors, cameras, etc.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A municipal road backflow prevention drainage system, comprising a barrel body (1), a manhole cover (3) is installed on the top of the barrel body (1), and a drainage pipe (4) is arranged at the bottom of the barrel body (1); characterized in that: Also includes: A partition (9) is arranged on the inner wall of the barrel (1); The spiral water conduit (10) is arranged at the bottom of the partition (9), the water inlet at the top of the spiral water conduit (10) is flush with the upper surface of the partition (9), and the water filter section (11) is arranged at the water outlet section at the bottom of the spiral water conduit (10); The sediment box (12) is arranged in the barrel body (1) and is in one-way communication with the water filtering section (11). The sediment box (12) is provided with an overflow pipe (23) extending to the outside of the barrel body (1), and water in the overflow pipe (23) flows outward in one-way; And a one-way water guide mechanism is arranged in the barrel body (1) and below the sediment box (12), and a backflow pipe (17) is arranged on the one-way water guide mechanism so as to be in conduction with the sediment box (12).

2. The municipal road anti-backflow drainage system according to claim 1, characterized in that: It also comprises a main drainage pipe (5), on which a plurality of connecting pipes (7) are arranged, and the drainage pipe (4) and the connecting pipes (7) are connected.

3. The municipal road backflow prevention and drainage system according to claim 1, characterized in that: A sewage interception hanging basket (8) is arranged on the top of the barrel body (1), and the sewage interception hanging basket (8) is located above the partition plate (9).

4. The municipal road anti-backflow drainage system according to claim 1, characterized in that: The sand box (12) is connected via a connecting column (22) and a sealing plate (21); a through hole for the sand box (12) to pass through is provided on the peripheral wall of the barrel body (1); the sealing plate (21) closes the through hole and is connected to the outer wall of the barrel body (1).

5. The municipal road anti-backflow drainage system according to claim 1, characterized in that: The one-way water guide mechanism comprises a conical flow guide cover (18) arranged on the inner wall of the barrel body (1), and a one-way valve c (20) arranged at the bottom outlet of the conical flow guide cover (18), and the bottom of the backflow pipe (17) is connected to the space below the conical flow guide cover (18).

6. The municipal road backflow prevention and drainage system according to claim 5, characterized in that: Definition parameters: the resistance of water in the water filtering section (11) entering the sediment box (12) is F1, the resistance of water in the overflow pipe (23) to be discharged is F2, the water flow resistance of the one-way water guide mechanism is F3, and the resistance of water in the backflow pipe (17) to flow into the sediment box (12) is F4; F1 = F3 < F2, F4 = 2 × F1.

7. The municipal road backflow prevention and drainage system according to claim 6, characterized in that: The one-way valve c (20) is a flap type one-way valve.

8. A method for using a municipal road backflow prevention and drainage system, using the municipal road backflow prevention and drainage system according to claim (1), characterized in that: The following steps are involved: S1. Place the one-way water guide mechanism into the barrel body (1) from the top of the barrel body (1) and install it; S2, placing the partition plate (9) and the spiral water guide pipe (10) into the barrel body (1) from the top of the barrel body (1) and installing them; S3, inserting the sediment box (12) into the barrel (1) from the side, and docking the sediment box (12) with the water filtering section (11) and the backflow pipe (17); S4, cover the well cover (3), and put the assembled whole into the rainwater well for use.

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