A municipal road drainage structure with anti-backflow function

Abstract

The present invention discloses a municipal road drainage structure with an anti-backflow function, comprising an outer shell, a manhole cover provided on the top of the outer shell, a water inlet provided on the top of the outer shell, a cylinder installed inside the water inlet; an annular protrusion is fixedly connected to the inner wall of the cylinder, and the annular protrusion is trumpet-shaped as a whole; when the present invention is used, the float can always float on the water surface of the rising water level, and as the water level in the sewer continues to rise, the float can continue to rise in the cylinder. During this process, since the interior of the float is hollow and a counterweight is installed, the counterweight always maintains a vertical downward position, and the sealing ring installed on the surface of the float can always maintain a vertical upward position on the water surface. When the water level rises to the water inlet, the sealing ring can fit with the annular protrusion to close the opening of the water inlet, thereby preventing the water level inside the sewer from rising and causing the accumulated water to flow back to the road surface.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal road drainage, and in particular to a municipal road drainage structure with an anti-backflow function. Background Art

[0002] Municipal road drainage refers to the management and treatment of rainwater and wastewater from urban roads and neighborhoods. This involves the design and construction of drainage systems on road surfaces to collect, convey, treat, and discharge rainwater and wastewater. The goal of municipal road drainage systems is to ensure smooth drainage of roads and surrounding areas, preventing flooding, stagnation, and waterlogging, while also preventing wastewater from contaminating surface and groundwater resources.

[0003] However, the existing municipal road drainage structure with anti-backflow function still has certain problems. The common municipal road drainage structure usually installs a drainage well at the drainage outlet to guide the road surface water into the sewer, and sets an anti-backflow baffle inside the drainage well. When the water in the sewer flows back during the drainage process, maintenance personnel are required to manually close the drainage outlet to avoid backflow. In addition, when the drainage pressure suddenly increases, the common drainage well with anti-backflow structure is difficult to quickly relieve the drainage pressure, resulting in excessive road surface water affecting the normal use of the road surface. Summary of the Invention

[0004] The purpose of the present invention is to provide a municipal road drainage structure with an anti-backflow function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a municipal road drainage structure with an anti-backflow function, comprising an outer shell, a manhole cover provided on the top of the outer shell, a water inlet provided on the top of the outer shell, a cylinder installed inside the water inlet; an annular protrusion is fixedly connected to the inner wall of the cylinder, the annular protrusion is generally trumpet-shaped, a float is provided inside the cylinder, the interior of the float is hollow, a counterweight is fixedly connected to the interior of the float, a sealing ring is fixedly connected to the outer wall of the float, the shape of the sealing ring matches the shape of the annular protrusion, a plurality of groups of equally spaced water outlets are provided on the outer wall of the cylinder in a vertical direction, and the number of water outlet holes in each group is not less than five, an annular groove is provided on the outer wall of the float, and a limiting mechanism for controlling the moving position of the float is installed on the cylinder.

[0006] Preferably, the limiting mechanism includes a T-shaped groove symmetrically opened on the outer wall of the cylinder, and a stopper is installed inside the T-shaped groove through a rotating shaft. The repelling sides of the two stops are fixedly connected to a limiting ring, and two insertion rods are symmetrically passed through the top of the cylinder, and the bottom end of the insertion rod passes through the limiting ring.

[0007] Preferably, four guide blocks are symmetrically installed on the outer wall of the cylinder, the insertion rod passes through the guide blocks, and one end of the top of the insertion rod is fixedly connected to a handle, and the handle is located at the top of the cylinder.

[0008] Preferably, a filter screen is embedded in the top opening of the cylinder, and the number of meshes of the filter screen is smaller than the number of meshes of the manhole cover.

[0009] Preferably, an elastic traction rope is fixedly connected to the top of the float, and one end of the top of the elastic traction rope is fixedly connected to the bottom of the filter screen.

[0010] Preferably, the volume of the counterweight block occupies 1 / 3 of the float, and the mass of the counterweight block is greater than the mass of the float.

[0011] Preferably, a plurality of water collecting troughs arranged at equal intervals are provided on the top of the shell, and the shape of the water collecting troughs is wedge-shaped.

[0012] Preferably, the annular protrusion and the sealing ring are made of fluorocarbon rubber.

[0013] Preferably, grooves are provided on both sides of the shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The float in the present invention can be used with a sealing ring to seal the annular protrusion to close the water inlet, thereby solving the problem of backflow of accumulated water. During this process, the float uses a counterweight block to keep the sealing ring in a vertical upward position. The present invention does not require maintenance personnel to manually close the drain outlet or use electric equipment to drive the drain outlet to close, saving labor costs and usage costs.

[0016] 2. During the drainage process of the present invention, the accumulated water enters the cylinder and can be discharged outward through the water outlet near the top of the cylinder. The float located inside the cylinder moves downward when under pressure. During the movement of the float, more water outlets can be exposed, thereby realizing automatic adjustment of the drainage volume under different drainage pressures.

[0017] 3. When the municipal road drainage pressure rises suddenly, the drainage maintenance personnel can pull up the two handles to pull the bottom of the rod out of the limit ring, thereby unlocking the block and allowing the float to move out of the cylinder through the bottom opening of the cylinder under the action of water pressure, exposing the water outlet and the bottom opening of the cylinder, reducing the pressure of accumulated water discharge and solving the problem that the drainage pressure cannot be quickly relieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a municipal road drainage structure with an anti-backflow function according to an embodiment of the present invention;

[0019] Figure 2 This is a structural schematic diagram of a water inlet and a water collection tank in a municipal road drainage structure with an anti-backflow function according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic structural diagram of a cylinder in a municipal road drainage structure with an anti-backflow function according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic cross-sectional view of a cylinder and a sphere in a municipal road drainage structure with backflow prevention function according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic cross-sectional structural diagram of the cylinder and sphere in the municipal road drainage structure with backflow prevention function from another perspective according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic structural diagram of a sphere in a municipal road drainage structure with an anti-backflow function according to an embodiment of the present invention.

[0024] In the figure: 1. Outer shell; 2. Manhole cover; 3. Cylinder; 4. Insert rod; 5. Limiting ring; 6. T-slot; 7. Water outlet; 8. Groove; 9. Guide block; 10. Water collecting trough; 11. Water inlet; 12. Filter screen; 13. Handle; 14. Annular protrusion; 15. Float; 16. Sealing ring; 17. Counterweight; 18. Stop block; 19. Annular groove; 20. Tow rope. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-6 An embodiment of the present invention provides a municipal road drainage structure with an anti-backflow function, including: a shell 1, a manhole cover 2 and a cylinder 3.

[0027] In this embodiment, Figure 1-Figure 5 As shown, a manhole cover 2 is provided on the top of the outer shell 1, a water inlet 11 is provided on the top of the outer shell 1, and a cylinder 3 is installed inside the water inlet 11; an annular protrusion 14 is fixedly connected to the inner wall of the cylinder 3, and the annular protrusion 14 is horn-shaped as a whole, and a float 15 is provided inside the cylinder 3, the interior of the float 15 is hollow, and a counterweight block 17 is fixedly connected to the interior of the float 15.

[0028] During use, when the water level in the sewer of the municipal road rises, the float 15 can always float on the water surface of the rising water level. As the water level in the sewer continues to rise, the float 15 can continue to rise in the cylinder 3. During this process, since the interior of the float 15 is hollow and is equipped with a counterweight 17, the counterweight 17 always maintains a vertical downward position to prevent the float 15 from tilting at will.

[0029] It should be noted that the volume of the counterweight 17 accounts for 1 / 3 of the float 15, and the mass of the counterweight 17 is greater than the mass of the float 15, so that the part of the float 15 where the counterweight 17 is installed is always vertically downward in the water body. At the same time, the maximum radius surface of the float 15 is no more than 0.5CM away from the inner wall of the cylinder 3.

[0030] In this embodiment, Figure 3-Figure 6 As shown, the outer wall of the float 15 is fixedly connected to a sealing ring 16, the shape of the sealing ring 16 matches the shape of the annular protrusion 14, the outer wall of the cylinder 3 is provided with multiple groups of equally spaced water outlet holes 7 along the vertical direction, and the number of water outlet holes 7 in each group is not less than five, the outer wall of the float 15 is provided with an annular groove 19, and a limiting mechanism for controlling the moving position of the float 15 is installed on the cylinder 3.

[0031] When in use, the sealing ring 16 installed on the surface of the float 15 can always maintain a vertical upward position on the water surface. When the water level rises to the water inlet 11, the sealing ring 16 can fit with the annular protrusion 14 to close the opening of the water inlet 11 and form a seal, thereby avoiding the phenomenon that the water level inside the sewer rises and the accumulated water flows back to the road surface, and there is no need for maintenance personnel to manually close the drain outlet.

[0032] Furthermore, the annular protrusion 14 and the sealing ring 16 are made of fluorocarbon rubber.

[0033] In this embodiment, Figure 3-Figure 6 As shown, the limiting mechanism includes a T-shaped groove 6 symmetrically opened on the outer wall of the cylinder 3, and a stopper 18 is installed inside the T-shaped groove 6 through a rotating shaft. The repelling side of the two stoppers 18 is fixedly connected to the limiting ring 5. Two insertion rods 4 are symmetrically passed through the top of the cylinder 3, and the bottom end of the insertion rod 4 passes through the limiting ring 5. In addition, four guide blocks 9 are symmetrically installed on the outer wall of the cylinder 3. The insertion rod 4 passes through the guide block 9. The top end of the insertion rod 4 is fixedly connected to a handle 13, and the handle 13 is located at the top of the cylinder 3.

[0034] When in use, the block 18 can be blocked in the annular groove 19 opened on the surface of the float 15 to prevent the float 15 from arbitrarily separating from the cylinder 3. When the drainage pressure suddenly rises, the drainage maintenance personnel can pull the two handles 13 upwards to pull the bottom end of the insertion rod 4 out of the limit ring 5 on one side of the block 18, thereby unlocking the position of the block 18 so that the block 18 will not restrict the position of the float 15. After being subjected to high water pressure and moving downward, the float 15 can move out of the cylinder 3 through the bottom opening of the cylinder 3, thereby exposing the water outlet 7 and the bottom opening of the cylinder 3.

[0035] In addition, after the float 15 is separated from the cylinder 3 and used, the float 15 and the limiting ring 5 can be reset, and the insertion rod 4 can be used to reinsert the limiting ring 5, thereby improving the reusability of the float 15.

[0036] like Figures 1-4 As shown, a filter screen 12 is embedded in the top opening of the cylinder 3 . The number of meshes of the filter screen 12 is smaller than that of the manhole cover 2 . The filter screen 12 on the top of the cylinder 3 can filter and intercept impurities finer than the manhole cover 2 from entering the interior of the cylinder 3 .

[0037] Furthermore, an elastic traction rope 20 is fixedly connected to the top of the float 15, and one end of the top of the elastic traction rope 20 is fixedly connected to the bottom of the filter screen 12. The elastic traction rope 20 can prevent the float 15 from being lost after being moved out of the cylinder 3.

[0038] Specifically, the top of the shell 1 is provided with several water collection troughs 10 arranged at equal intervals. The water collection troughs 10 are wedge-shaped, and grooves 8 are provided on both sides of the shell 1. The water collection troughs 10 can use the wedge-shaped structure to guide the accumulated water into the water inlet 11, wherein the grooves 8 can facilitate maintenance personnel to carry and move the shell 1.

[0039] According to the above technical solution, the working steps of this solution are summarized and sorted out: when the present invention is used, the outer shell 1 equipped with the cylinder 3 is installed in the municipal road outlet, and the manhole cover 2 is installed on the top of the outer shell 1. During the road drainage process, the accumulated water on the road will enter the outer shell 1 through the manhole cover 2 and flow into the cylinder 3 through the water inlet 11, so that the cylinder 3 can guide the accumulated water to be discharged into the sewer of the municipal road.

[0040] When the water level in the sewer of the municipal road rises, the float 15 can always float on the water surface of the rising water level. As the water level in the sewer continues to rise, the float 15 can continue to rise in the cylinder 3. During this process, since the interior of the float 15 is hollow and is equipped with a counterweight 17, the counterweight 17 always maintains a vertical downward position, and the sealing ring 16 installed on the surface of the float 15 can always maintain a vertical upward position on the water surface. When the water level rises to the water inlet 11, the sealing ring 16 can fit with the annular protrusion 14 to close the opening of the water inlet 11 to form a seal, thereby avoiding the phenomenon of accumulated water flowing back to the road surface due to the rising water level inside the sewer. There is no need for maintenance personnel to manually close the drain outlet, and there is no need for electric equipment to drive the drain outlet to be closed, so that the present invention can automatically prevent backflow, saving labor costs and usage costs.

[0041] During the drainage process, the accumulated water enters the cylinder 3 and can be discharged outward through the water outlet 7 near the top of the cylinder 3. When the pressure of the accumulated water inside the cylinder 3 increases, the float 15 located inside the cylinder 3 moves downward under pressure. During the movement of the float 15, more water outlet holes 7 can be exposed, thereby realizing automatic adjustment of the drainage volume under different drainage pressures.

[0042] When there is too much water on the municipal road and the drainage pressure rises suddenly, the drainage maintenance personnel can pull the two handles 13 upwards to pull the bottom end of the rod 4 out of the limit ring 5 on the side of the block 18, thereby unlocking the position of the block 18, so that the block 18 will not restrict the position of the float 15. After being subjected to high water pressure and moving downward, the float 15 can move out of the cylinder 3 through the bottom opening of the cylinder 3, thereby exposing the water outlet 7 and the bottom opening of the cylinder 3, so that the suddenly accumulated water can be quickly discharged outward through the cylinder 3, reducing the discharge pressure of the accumulated water, so that the present invention can solve the problem that the drainage pressure cannot be quickly relieved due to the sudden increase of accumulated water, and the float 15 and the limit ring 5 can be reset after use, and the rod 4 can be reinserted into the limit ring 5, thereby improving the reusability of the float 15.

[0043] Parts not described in the present invention are the same as those in the prior art or can be implemented using the prior art. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A municipal road drainage structure with a backflow prevention function, comprising a housing (1), a manhole cover (2) provided on the top of the housing (1), a water inlet (11) provided on the top of the housing (1), a cylinder (3) installed inside the water inlet (11), and characterized in that: The inner wall of the cylinder (3) is fixedly connected with an annular protrusion (14), and the annular protrusion (14) is in the shape of a trumpet as a whole. A float (15) is provided inside the cylinder (3), and the interior of the float (15) is hollow. A counterweight (17) is fixedly connected inside the float (15). A sealing ring (16) is fixedly connected to the outer wall of the float (15), and the shape of the sealing ring (16) matches the shape of the annular protrusion (14). The outer wall of the cylinder (3) is provided with a plurality of groups of equally spaced water outlet holes (7) in the vertical direction, and each group of the water outlet holes ( 7) is not less than five, an annular groove (19) is provided on the outer wall of the float (15), a limiting mechanism for controlling the moving position of the float (15) is installed on the cylinder (3), the limiting mechanism includes a T-shaped groove (6) symmetrically opened on the outer wall of the cylinder (3), a stopper (18) is installed inside the T-shaped groove (6) through a rotating shaft, and the repelling sides of the two stops (18) are fixedly connected to the limiting ring (5), and two insertion rods (4) are symmetrically passed through the top of the cylinder (3), and the bottom end of the insertion rod (4) passes through the limiting ring (5).

2. The municipal road drainage structure with backflow prevention function according to claim 1, characterized in that: Four guide blocks (9) are symmetrically mounted on the outer wall of the cylinder (3), the insertion rod (4) passes through the guide blocks (9), and a handle (13) is fixedly connected to one end of the top of the insertion rod (4), and the handle (13) is located at the top of the cylinder (3).

3. The municipal road drainage structure with backflow prevention function according to claim 1, characterized in that: A filter screen (12) is embedded in the top opening of the cylinder (3), and the number of meshes of the filter screen (12) is smaller than the number of meshes of the manhole cover (2).

4. The municipal road drainage structure with backflow prevention function according to claim 3, characterized in that: The top of the float (15) is fixedly connected to an elastic traction rope (20), and one end of the top of the traction rope (20) is fixedly connected to the bottom of the filter screen (12).

5. The municipal road drainage structure with backflow prevention function according to claim 1, characterized in that: The volume of the counterweight block (17) accounts for 1 / 3 of the float ball (15), and the mass of the counterweight block (17) is greater than the mass of the float ball (15).

6. The municipal road drainage structure with backflow prevention function according to claim 1, characterized in that: The top of the housing (1) is provided with a plurality of water collecting grooves (10) arranged at equal intervals, and the shape of the water collecting grooves (10) is wedge-shaped.

7. The municipal road drainage structure with backflow prevention function according to claim 1, characterized in that: The annular protrusion (14) and the sealing ring (16) are made of fluorocarbon rubber.

8. The municipal road drainage structure with backflow prevention function according to claim 1, characterized in that: Grooves (8) are provided on both sides of the housing (1).

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