Anti-blocking rainwater drainage pipe
By designing an anti-blocking rainwater drainage pipe with a float and buoyancy device, the problem of municipal drainage pipes being easily blocked by debris is solved, and the smooth discharge of rainwater and effective prevention of blockage is achieved.
Patent Information
- Application Number
- CN202422020621.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-20
AI Technical Summary
Municipal drainage pipes are easily blocked by leaves, branches and other debris, resulting in the inability to discharge rainwater smoothly and causing problems such as waterlogging.
An anti-blocking rainwater drainage pipe is designed, including a cylindrical shell, a cover plate, a float and a buoyancy device. The float can actively float when the water flow is high, pushing away the blocked leaves, dead branches and other debris to prevent blockage.
Through the automatic up and down movement of the float, debris can be effectively pushed away, preventing the drainage outlet from being blocked, ensuring the smooth discharge of rainwater, and avoiding the problem of flooding.
Smart Images
Figure CN222923879U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of water supply and drainage pipelines, and more particularly relates to an anti-blocking rainwater drainage pipe. Background Art
[0002] Municipal drainage pipelines are an important part of urban infrastructure, mainly used for collecting and discharging urban domestic sewage, rainwater and industrial wastewater. A basic function of municipal drainage pipelines is to collect and discharge rainwater. During the rainy season, the rainwater in the city will be discharged through the municipal drainage pipelines to prevent urban waterlogging.
[0003] Municipal drainage pipelines are easily blocked by sundries such as leaves and branches, especially when there are more fallen leaves in autumn. Once the drainage pipeline is blocked, it may cause the rainwater to be unable to be discharged smoothly, leading to problems such as waterlogging.
[0004] When the rainwater flow is large, water accumulates on the road surface, which is likely to bring the leaves, dead branches and other sundries on the road surface to the vicinity of the drainage outlet. These leaves, dead branches and other sundries are likely to cause blockage of the drainage outlet. Summary of the Utility Model
[0005] An object of the utility model is to provide an anti-blocking rainwater drainage pipe for draining rainwater on the road surface and having a function of preventing blockage. The anti-blocking rainwater drainage pipe includes a cylindrical shell with both ends penetrating, a cover plate arranged at the end of the cylindrical shell, a floating cylinder connected to the cover plate, and a buoyancy device arranged inside the floating cylinder;
[0006] The inside of the cylindrical shell is hollow. The two ends of the cylindrical shell are respectively a proximal end and a distal end. The proximal end is the water inlet, and the distal end is the water outlet; the cover plate is arranged at the end of the proximal end of the cylindrical shell, and an upper water inlet hole is arranged on the cover plate; the floating cylinder is circular, one end of the floating cylinder is connected to the cover plate, and a side water inlet hole penetrating the circumferential surface is arranged on the circumferential surface of the floating cylinder;
[0007] A water blocking assembly is further arranged inside the cylindrical shell. The water blocking assembly includes a water blocking cylinder arranged inside the floating cylinder and a water blocking plate arranged between the floating cylinder and the water blocking cylinder; an overflow hole is arranged on the water blocking cylinder; when water flows in through the upper water inlet hole and the water inflow rate of the upper water inlet hole is greater than the water outflow rate of the overflow hole, water accumulates in the area between the water blocking plate and the cover plate, the buoyancy device drives the floating cylinder to rise, and water can also flow in through the side water inlet hole.
[0008] Preferably, the circumferential surface of the floating cylinder is provided with a plurality of longitudinal partition strips arranged evenly and at intervals, and the gap between adjacent longitudinal partition strips is the side water inlet hole;
[0009] The state in which the float is completely inside the cylindrical shell is a retracted state, and the state in which the float is driven up by the buoyancy device is a floating state; when the float is in the retracted state, water cannot enter the side water inlet hole due to the obstruction of the cylindrical shell.
[0010] Preferably, the water retaining cylinder is a hollow cylinder, and the buoyancy device is arranged between the water retaining cylinder and the cover plate; the water retaining plate is annular, and a plurality of protrusions matching the gaps between the longitudinal spacers are arranged on the outer side of the water retaining plate, the protrusions are connected to the cylindrical shell, and the longitudinal spacers of the buoy can move in the gaps between the protrusions;
[0011] The water baffle plate surrounds the outer side of the water baffle cylinder, the water baffle cylinder can move in the circular hole at the center of the water baffle plate, and the overflow hole is arranged on the circumferential surface of the water baffle cylinder.
[0012] Preferably, the overflow hole is in the shape of an elongated strip, the length direction of the overflow hole is parallel to the axis of the cylindrical shell, the water baffle plate divides the overflow hole into two upper and lower areas, the area above the water baffle plate is the overflow water inlet area, and the area below the water baffle plate is the overflow water outlet area;
[0013] The relative position of the water baffle and the overflow hole can control the water inlet speed of the overflow hole. When the buoy is in the retracted state, water flows into the upper water inlet hole. When the water flow rate of the upper water inlet hole is greater than the maximum water flow rate of the overflow water inlet area, water accumulates in the area between the water baffle and the cover plate, and the buoyancy device drives the buoy to rise; after the buoy rises, the area of the overflow water inlet area above the water baffle increases, and the amount of water accumulated between the water baffle and the cover plate decreases, and the buoy drops accordingly.
[0014] Preferably, a water storage space is provided at the bottom of the water retaining cylinder, and the water storage space is used to collect water to increase the weight of the buoy; a hinged drain plate and an elastic connector connecting the drain plate and the water retaining cylinder are provided at the bottom of the water storage space;
[0015] When the water mass in the water storage space is small, the elastic connector pushes the drain plate to close; when the water mass in the water storage space is large, the drain plate opens to drain the water in the water storage space, and then the elastic connector pushes the drain plate to close.
[0016] Preferably, a limiting step is provided inside the cylindrical shell, and the limiting step is used to limit the lowest position of the float inside the cylindrical shell; when the float contacts the limiting step, the top end of the cover plate is flush with the top end of the cylindrical shell.
[0017] As described above, when the rainwater flow rate is large, water accumulates on the road surface, and it is easy to carry leaves, dead branches, and other sundries on the road surface to the vicinity of the drain outlet. These leaves, dead branches, and other sundries are likely to cause blockage of the drain outlet. An anti-blocking rainwater drain pipe of the present invention can actively float up by a certain distance when the water flow rate is large. On the one hand, it can increase the water inlet flow rate, and on the other hand, it can push away the blocking leaves, dead branches, and other sundries to prevent blockage. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention will be more fully understood through the following detailed description in conjunction with the drawings, in which like elements are numbered in like manner, where:
[0019] Figure 1 is an overall schematic view of an anti-blocking rainwater drain pipe according to an embodiment of the present invention;
[0020] Figure 2 is a cross-sectional view of an anti-blocking rainwater drain pipe according to an embodiment of the present invention;
[0021] Figure 3 is Figure 2 a partial enlarged view of part A in
[0022] Figure 4 is a schematic view of a floating cylinder of an anti-blocking rainwater drain pipe according to an embodiment of the present invention;
[0023] Figure 5 is a schematic view of the inside of a floating cylinder of an anti-blocking rainwater drain pipe according to an embodiment of the present invention;
[0024] Figure 6 is a schematic view of a water-blocking cylinder of an anti-blocking rainwater drain pipe according to an embodiment of the present invention;
[0025] Figure 7 is Figure 6 a partial enlarged view of part A in
[0026] In the figure: cylindrical shell 1, limit step 11, cover plate 2, upper water inlet hole 21, floating cylinder 3, side water inlet hole 31, longitudinal partition strip 32, water-blocking cylinder 4, water-blocking plate 41, protruding part 411, overflow hole 42, water storage space 43, elastic connecting piece 44, drainage plate 45, buoyancy device 5. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] An anti-blocking rainwater drain pipe for draining rainwater on the road surface and having the function of preventing blockage, the anti-blocking rainwater drain pipe includes a cylindrical shell 1 with both ends penetrating, a cover plate 2 arranged at the end of the cylindrical shell 1, a floating cylinder 3 connected to the cover plate 2, and a buoyancy device 5 arranged inside the floating cylinder 3;
[0028] The cylindrical shell 1 is hollow inside. The two ends of the cylindrical shell 1 are the proximal end and the distal end respectively. The proximal end is the water inlet, and the distal end is the water outlet. The cover plate 2 is arranged at the end of the proximal end of the cylindrical shell. An upper water inlet hole 21 is arranged on the cover plate 2. The floating cylinder 3 is annular. One end of the floating cylinder 3 is connected to the cover plate 2. Side water inlet holes 31 penetrating the circumferential surface are arranged on the circumferential surface of the floating cylinder 3.
[0029] A water blocking assembly is further arranged inside the cylindrical shell 1. The water blocking assembly includes a water blocking cylinder 4 arranged inside the floating cylinder 3 and a water blocking plate 41 arranged between the floating cylinder 3 and the water blocking cylinder 4. An overflow hole 42 is arranged on the water blocking cylinder 4. Water is input through the upper water inlet hole 21. When the water inflow rate through the upper water inlet hole 21 is greater than the water outflow rate of the overflow hole 42, water accumulates in the area between the water blocking plate 41 and the cover plate 2. The buoyancy device 5 drives the floating cylinder 3 to rise, and water can also be input through the side water inlet holes 31.
[0030] In this embodiment, as Figure 1 , Figure 2 shown, the cylindrical shell 1 is the outer shell of the water leakage port of an anti-blocking rainwater drain pipe, usually installed on the ground surface. The proximal end of the cylindrical shell 1 is installed on the ground, and the rainwater on the road surface can flow into the drain pipe through the proximal end of the cylindrical shell 1.
[0031] The cover plate 2 is provided with an upper water inlet hole 21, and the upper water inlet hole 21 can prevent larger debris from falling into the drain pipe. The floating cylinder 3 is arranged inside the cylindrical shell 1, and the floating cylinder 3 can move up and down along the axis of the cylindrical shell 1. When the floating cylinder 3 floats, it can push away the blocked leaves, dead branches and other debris to prevent the drain outlet from being blocked.
[0032] The floating of the floating cylinder 3 is realized by the buoyancy device 5. The buoyancy device 5 can be a hollow container with air sealed inside to generate sufficient buoyancy. The water blocking assembly is used to collect the water flowing into the drain pipe, and this water can be discharged through the overflow hole 42. When the rainfall is small and the water inflow rate into the drain pipe is small, the drainage speed of the overflow hole 42 is close to the speed of the rainwater flowing into the drain pipe, and water cannot accumulate in large quantities in the area between the water blocking plate 41 and the cover plate 2. The buoyancy device 5 arranged in the area between the water blocking plate 41 and the cover plate 2 cannot float, and the floating cylinder 3 remains in a sunken state.
[0033] When the rainfall is large and the water inflow rate into the drain pipe is large, the drainage speed of the overflow hole 42 is less than the speed of the rainwater flowing into the drain pipe, and water accumulates in large quantities in the area between the water blocking plate 41 and the cover plate 2. The buoyancy device 5 floats, drives the floating cylinder 3 to rise, and pushes away the blocked leaves, dead branches and other debris to prevent the drain outlet from being blocked.
[0034] Inside the cylindrical housing 1, a limiting step 11 is provided, which is used to limit the lowest position of the floating cylinder 3 inside the cylindrical housing 1; when the floating cylinder 3 contacts the limiting step 11, the top end of the cover plate 2 is flush with the top end of the cylindrical housing 1.
[0035] Furthermore, on the circumferential surface of the floating cylinder 3, a plurality of longitudinal partition bars 32 are evenly and spacedly arranged. The gap between adjacent longitudinal partition bars 32 is a side water inlet hole 31.
[0036] The state where the floating cylinder 3 is completely inside the cylindrical housing 1 is the retracted state, and the state where the buoyancy device 5 drives the floating cylinder 3 to rise is the floating state; when the floating cylinder 3 is in the retracted state, the water inlet of the side water inlet hole 31 cannot intake water due to the blockage of the cylindrical housing 1.
[0037] The retracted state is as shown in Figure 1 、 Figure 2 、 Figure 4 shown, and the floating state is as shown in Figure 5 shown.
[0038] In this embodiment, as shown in Figure 2 、 Figure 3 and Figure 4 shown, on the one hand, the longitudinal partition bars 32 play a role in supporting the floating cylinder 3, and on the other hand, they can also provide a channel for side water intake in the floating state of the floating cylinder 3. The gap between adjacent longitudinal partition bars 32 is a side water inlet hole 31.
[0039] Furthermore, the water blocking cylinder 4 is a hollow cylindrical shape, and the buoyancy device 5 is arranged between the water blocking cylinder 4 and the cover plate 2; the water blocking plate 41 is annular, and a plurality of protruding parts 411 matching the gap between the longitudinal partition bars 32 are arranged on the outer side of the water blocking plate 41. The protruding parts 411 are connected to the cylindrical housing 1, and the longitudinal partition bars 32 of the floating cylinder 3 can move within the gap between the protruding parts 411.
[0040] The water blocking plate 41 surrounds the outside of the water blocking cylinder 4, and the water blocking cylinder 4 can move within the circular hole at the center of the water blocking plate 41. The overflow hole 42 is arranged on the circumferential surface of the water blocking cylinder 4.
[0041] In this embodiment, the water blocking plate 41 is umbrella-shaped, with a circular hole in the center, and the center is low in height while the surrounding is high in height. The water around can flow towards the center. The outer side of the water blocking plate 41 is provided with protruding parts 411, and the protruding parts 411 are connected to the cylindrical housing 1, which can be bonded. The water blocking plate 41 does not float up and down with the floating cylinder 3, and the longitudinal partition bars 32 of the floating cylinder 3 can move within the gap between the protruding parts 411.
[0042] Furthermore, the overflow hole 42 is in the shape of an elongated strip, and the length direction of the overflow hole 42 is parallel to the axis of the cylindrical shell 1. The water baffle 41 divides the overflow hole 42 into two upper and lower areas. The area above the water baffle 41 is the overflow water inlet area, and the area below the water baffle 41 is the overflow water outlet area.
[0043] The relative position of the water baffle 41 and the overflow hole 42 can control the water inlet speed of the overflow hole 42. When the buoy 3 is in the retracted state, water flows into the upper water inlet hole 21. When the flow rate of water entering the upper water inlet hole 21 is greater than the maximum water flow rate of the overflow water inlet area, water accumulates in the area between the water baffle 41 and the cover plate 2, and the buoyancy device 5 drives the buoy 3 to rise; after the buoy 3 rises, the area of the overflow water inlet area above the water baffle 41 increases, and the amount of water accumulated between the water baffle 41 and the cover plate 2 decreases, and the buoy 3 drops accordingly.
[0044] In this embodiment, the overflow hole 42 is in the shape of a long strip, and the water baffle 41 divides the overflow hole 42 into two upper and lower areas. The area above the water baffle 41 is the overflow water inlet area, and the area below the water baffle 41 is the overflow water outlet area. When the float 3 is in the retracted state, the overflow water inlet area is small, and the water baffle 41 has a strong water blocking effect. When the rainfall is heavy, the water flow rate flowing into the drain pipe is large, and the drainage speed of the overflow hole 42 is lower than the speed of rainwater flowing into the drain pipe. A large amount of water gathers in the area between the water baffle 41 and the cover plate 2.
[0045] After the float 3 rises, the relative position of the water baffle 41 and the overflow hole 42 changes, the area of the overflow water inlet area becomes larger, and the water blocking effect of the water baffle 41 becomes weaker, which is conducive to the discharge of water. The amount of water in the area between the water baffle 41 and the cover plate 2 decreases accordingly, the float 3 descends, and the water blocking effect of the water baffle 41 becomes stronger again, and so on. The automatic up and down movement of the float 3 can play a role in dynamically cleaning leaves, dead branches and other debris, and prevent leaves, dead branches and other debris from gathering near the drain outlet and causing blockage of the drain outlet.
[0046] Furthermore, a water storage space 43 is provided at the bottom of the water retaining cylinder 4, and the water storage space 43 is used to collect water to increase the weight of the buoy 3; a hinged drain plate 45 and an elastic connector 44 connecting the drain plate 45 and the water retaining cylinder 4 are provided at the bottom of the water storage space 43;
[0047] When the water mass in the water storage space 43 is small, the elastic connector 44 pushes the drain plate 45 to close; when the water mass in the water storage space 43 is large, the drain plate 45 opens to drain the water in the water storage space 43, and then the elastic connector 44 pushes the drain plate 45 to close.
[0048] In this embodiment, Figure 5 , Figure 6As shown, the water storage space 43 is used to collect the water passing through the water baffle 41 to increase the weight of the buoy 3. After the weight of the buoy 3 increases, it can drive the floating body to drop significantly. When the water storage quality in the water storage space 43 is large, the drain plate 45 opens to empty the water in the water storage space 43. The water storage space 43 can increase the distance of the buoy 3 moving up and down when the rainfall is large, and clean the leaves, dead branches and other sundries when the drain outlet is blocked.
[0049] As Figure 7 shown, the water baffle cylinder 4 is cylindrical, the drain plate 45 is a matching cylinder, the drain plate 45 is hinged to the water baffle cylinder 4, the elastic connecting member 44 is a spring, one end of the elastic connecting member 44 is connected to the water baffle cylinder 4, and the other end is connected to the drain plate 45.
Claims
1. An anti-clogging rainwater drainage pipe, used for road rainwater drainage, has the function of preventing clogging, characterized by: The anti-clogging rainwater drainage pipe comprises a cylindrical shell (1) with two ends connected, a cover plate (2) arranged at the end of the cylindrical shell (1), a buoy (3) connected to the cover plate (2), and a buoyancy device (5) arranged inside the buoy (3); The cylindrical shell (1) is hollow inside, and the two ends of the cylindrical shell (1) are respectively a proximal end and a distal end, the proximal end being a water inlet, and the distal end being a water outlet; the cover plate (2) is arranged at the end of the proximal end of the cylindrical shell, and an upper water inlet hole (21) is arranged on the cover plate (2); the buoy (3) is in the shape of a ring, one end of the buoy (3) is connected to the cover plate (2), and a side water inlet hole (31) penetrating the circumferential surface is arranged on the circumferential surface of the buoy (3); A water retaining assembly is also provided inside the cylindrical shell (1), the water retaining assembly comprising a water retaining cylinder (4) provided inside the buoy (3) and a water retaining plate (41) provided between the buoy (3) and the water retaining cylinder (4); an overflow hole (42) is provided on the water retaining cylinder (4); water flows into the upper water inlet hole (21), and when the flow rate of water flowing into the upper water inlet hole (21) is greater than the flow rate of water flowing out of the overflow hole (42), water accumulates in the area between the water retaining plate (41) and the cover plate (2), the buoyancy device (5) drives the buoy (3) to rise, and water flows can also be input through the side water inlet hole (31).
2. The anti-clogging rainwater drainage pipe according to claim 1, characterized in that: The circumferential surface of the buoy (3) passes through a plurality of longitudinal partition bars (32) that are evenly and spaced apart, and the gaps between the longitudinal partition bars (32) and adjacent longitudinal partition bars (32) are side water inlet holes (31); The state in which the buoy (3) is completely inside the cylindrical shell (1) is a retracted state, and the state in which the buoyancy device (5) drives the buoy (3) to rise is a floating state; when the buoy (3) is in the retracted state, water cannot enter the side water inlet hole (31) due to the obstruction of the cylindrical shell (1).
3. The anti-clogging rainwater drainage pipe according to claim 2, characterized in that: The water retaining cylinder (4) is in the shape of a cylinder with a hollow interior, and the buoyancy device (5) is arranged between the water retaining cylinder (4) and the cover plate (2); the water retaining plate (41) is in the shape of a ring, and a plurality of protrusions (411) matching the gaps between the longitudinal spacer bars (32) are arranged on the outside of the water retaining plate (41), the protrusions (411) are connected to the cylindrical shell (1), and the longitudinal spacer bars (32) of the buoy (3) can move in the gaps between the protrusions (411); The water baffle plate (41) surrounds the outside of the water baffle cylinder (4); the water baffle cylinder (4) is movable in a circular hole at the center of the water baffle plate (41); and the overflow hole (42) is arranged on the circumferential surface of the water baffle cylinder (4).
4. The anti-clogging rainwater drainage pipe according to claim 3, characterized in that: The overflow hole (42) is in the shape of an elongated strip, and the length direction of the overflow hole (42) is parallel to the axis of the cylindrical shell (1). The water baffle plate (41) divides the overflow hole (42) into two upper and lower areas, the area above the water baffle plate (41) is the overflow water inlet area, and the area below the water baffle plate (41) is the overflow water outlet area; The relative position of the water retaining plate (41) and the overflow hole (42) can control the water inlet speed of the overflow hole (42). When the buoy (3) is in a retracted state, water flows into the upper water inlet hole (21). When the flow rate of water flowing into the upper water inlet hole (21) is greater than the maximum water flow rate of the overflow water inlet area, water accumulates in the area between the water retaining plate (41) and the cover plate (2), and the buoyancy device (5) drives the buoy (3) to rise. After the buoy (3) rises, the area of the overflow water inlet area above the water retaining plate (41) increases, the amount of water accumulated between the water retaining plate (41) and the cover plate (2) decreases, and the buoy (3) descends accordingly.
5. The anti-clogging rainwater drainage pipe according to claim 4, characterized in that: A water storage space (43) is provided at the bottom of the water retaining cylinder (4), and the water storage space (43) is used to collect water to increase the weight of the buoy (3); a hinged drainage board (45) and an elastic connecting member (44) connecting the drainage board (45) and the water retaining cylinder (4) are provided at the bottom of the water storage space (43); When the mass of water stored in the water storage space (43) is small, the elastic connecting member (44) pushes the drain plate (45) to close; when the mass of water stored in the water storage space (43) is large, the drain plate (45) opens to drain the water in the water storage space (43), and then the elastic connecting member (44) pushes the drain plate (45) to close.
6. The anti-clogging rainwater drainage pipe according to claim 1, characterized in that: A limiting step (11) is provided inside the cylindrical shell (1), and the limiting step (11) is used to limit the lowest position of the float (3) inside the cylindrical shell (1); when the float (3) contacts the limiting step (11), the top end of the cover plate (2) is flush with the top end of the cylindrical shell (1).