Anti-backflow pipeline structure of catch basin

Abstract

The utility model relates to the technical field of drainage equipment, and provides an anti-backflow pipeline structure of a catch basin, which comprises an inner well pipe and an outer well pipe, the outer well pipe is horizontally arranged, the inner well pipe is of a U-shaped structure, the outlet end of the inner well pipe faces downwards, the opening of the U-shaped structure faces downwards, and the outlet end of the U-shaped structure faces downwards. The vertical height of the outlet end of the in-well pipe is larger than that of the out-well pipe. By means of the technical scheme, the problem that in the prior art, a connecting pipeline of a rainwater well possibly has well water backflow due to rising of the water level in the well is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage equipment, and in particular to a backflow prevention pipeline structure of a rainwater well. Background Art

[0002] A rainwater well has holes on its side that are connected to the drainage pipe, and a seepage pipe extending downward at the bottom, which can replenish rainwater into the ground and drain excess rainwater through the drainage pipe. Rainwater wells can be installed in places such as roads, squares, parks, and around buildings. Among them, rainwater wells are also widely used in industrial plants. Some of the rainwater wells are installed around the basement. The basement may involve important power facilities, fire-fighting facilities, etc. in the plant area. Generally, pipes are connected from the basement to the rainwater well to drain excess water in the basement into the rainwater well. However, when the rainfall is too heavy, the water level in the rainwater well rises and is higher than the position connected to the basement pipe, which will cause rainwater backflow. Therefore, based on the above problems, a new pipeline structure is urgently needed to solve them. Utility Model Content

[0003] The utility model provides a rainwater well anti-backflow pipeline structure, which solves the problem in the prior art that the connecting pipeline of the rainwater well may backflow due to the rising water level in the well.

[0004] The technical solution of the utility model is as follows:

[0005] A backflow prevention pipeline structure for a rainwater well, the backflow prevention pipeline structure is used to be arranged on the middle side wall of the rainwater well and pass through the side wall of the rainwater well, the backflow prevention pipeline structure includes an inner well pipe and an outer well pipe, the outer well pipe is arranged horizontally, the inner well pipe is arranged as a U-shaped structure, the outlet end of the inner well pipe faces downward, the opening of the U-shaped structure faces downward, and the vertical height of the outlet end of the inner well pipe is higher than the vertical height of the outer well pipe.

[0006] The anti-backflow pipeline structure also includes a first one-way valve assembly and a second one-way valve assembly. The first one-way valve assembly is arranged on a side of the U-shaped structure of the well pipe close to the well pipe, and the second one-way valve assembly is arranged at the outlet end of the U-shaped structure of the well pipe.

[0007] The second one-way valve assembly includes a pipe mouth bracket and a fan-shaped blade arranged on the pipe mouth bracket. The pipe mouth bracket is clamped at the outlet end of the pipe in the well. The pipe mouth bracket is provided with a bearing net in the water outlet direction. The arc edge of the fan-shaped blade is connected to the water outlet side edge of the pipe mouth bracket, and multiple fan-shaped blades are arranged circumferentially.

[0008] The first one-way valve assembly includes a connecting pipe and a duckbill hose arranged in the connecting pipe. The well pipe includes a first part and a second part. The first part and the second part are connected by means of the connecting pipe. The direction from the large diameter end to the flat mouth end of the duckbill hose is the same as the water outlet direction of the well pipe.

[0009] The working principle and beneficial effects of the utility model are:

[0010] The utility model discloses a backflow prevention pipeline structure for a rainwater well, wherein the backflow prevention pipeline structure is arranged on the side wall of the rainwater well, the pipeline passes through the side wall of the rainwater well, and the backflow prevention pipeline structure is divided into an outer well pipe and an inner well pipe according to different installation positions of the rainwater well, wherein the outer well pipe is used to connect to a location with lower terrain such as a basement, and the inner well pipe is in the rainwater well, and water in a location with lower terrain such as the basement can enter the inner well pipe through the outer well pipe and then be discharged from the rainwater well. In order to solve the dangerous situation in the prior art that the rainwater well is backflowed to a location with lower terrain such as a basement when the rainwater is heavy, a U-shaped structure is arranged after the inner well pipe extends from the outer well pipe into the side wall of the rainwater well, and the opening of the U-shaped structure faces downward, the outlet end of the inner well pipe also faces downward, and the vertical height of the outlet end of the inner well pipe is higher than the vertical height of the outer well pipe, so as to prevent the accumulated water in the rainwater well from flowing back to a location with lower terrain such as a basement through the inner well pipe, thereby solving the problem in the prior art that the connecting pipeline of the rainwater well may flow back due to the rising water level in the well. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0014] In the figure: 1, inner well pipe, 2, outer well pipe, 3, first one-way valve assembly, 4, second one-way valve assembly, 5, pipe mouth bracket, 6, fan-shaped blades, 7, bearing net, 8, connecting pipe, 9, duckbill hose, 10, first part, 11, second part. DETAILED DESCRIPTION

[0015] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1-2 As shown, this embodiment proposes a backflow prevention pipeline structure for a rainwater well, the backflow prevention pipeline structure is used to be arranged on the middle side wall of the rainwater well and pass through the side wall of the rainwater well, the backflow prevention pipeline structure includes an inner well pipe 1 and an outer well pipe 2, the outer well pipe 2 is horizontally arranged, the inner well pipe 1 is arranged as a U-shaped structure, the outlet end of the inner well pipe 1 faces downward, the opening of the U-shaped structure faces downward, and the vertical height of the outlet end of the inner well pipe 1 is higher than the vertical height of the outer well pipe 2.

[0017] In the present embodiment, a backflow prevention pipeline structure for a rainwater well is disclosed, wherein the backflow prevention pipeline structure is arranged on the side wall of the rainwater well, and the pipeline passes through the side wall of the rainwater well. Depending on the installation position of the rainwater well, the backflow prevention pipeline structure is divided into an outer well pipe 2 and an inner well pipe 1, wherein the outer well pipe 2 is used to connect to a lower-lying location such as a basement, and the inner well pipe 1 is in the rainwater well. Water in a lower-lying location such as a basement can enter the inner well pipe 1 through the outer well pipe 2 and then be discharged from the rainwater well. In order to solve the dangerous situation in the prior art that the rainwater well is backflowed to a lower-lying location such as a basement when there is heavy rain, a U-shaped structure is arranged after the inner well pipe 1 extends from the outer well pipe 2 into the side wall of the rainwater well, and the opening of the U-shaped structure faces downward, the outlet end of the inner well pipe 1 also faces downward, and the vertical height of the outlet end of the inner well pipe 1 is higher than the vertical height of the outer well pipe 2, so as to prevent the accumulated water in the rainwater well from backflowing to a lower-lying location such as a basement through the inner well pipe 1. It should be noted that the vertical height of the outlet end of the U-shaped structure in the well can be adaptively selected according to the needs of use. An optional implementation method is to make the outlet end of the U-shaped structure higher than the best water level of the rainwater well, which is the relatively safest implementation method. Of course, under the condition of good drainage, the height does not have to be selected at this height, and other heights may also be applicable.

[0018] The anti-backflow pipeline structure also includes a first one-way valve assembly 3 and a second one-way valve assembly 4. The first one-way valve assembly 3 is arranged on a side of the U-shaped structure of the well pipe 1 close to the outer well pipe 2, and the second one-way valve assembly 4 is arranged at the outlet end of the U-shaped structure of the well pipe 1.

[0019] In this embodiment, a first one-way valve assembly 3 and a second one-way valve assembly 4 are also provided on the anti-backflow pipeline structure, combined with a U-shaped structure, wherein the first one-way valve assembly 3 is arranged on the side of the U-shaped structure close to the outer well pipe 2, and the second one-way valve assembly 4 is arranged at the outlet end of the inner well pipe 1, wherein both one-way valve assemblies can play a role in preventing backflow. Combined with the U-shaped structure, the first one-way valve assembly 3 can also form a liquid seal in a section of the pipeline to prevent odor in the rainwater well from entering the basement and other lower-lying areas through the pipeline.

[0020] The second one-way valve assembly 4 includes a pipe nozzle bracket 5 and a fan-shaped blade 6 arranged on the pipe nozzle bracket 5. The pipe nozzle bracket 5 is clamped at the outlet end of the well pipe 1. The pipe nozzle bracket 5 is provided with a supporting net 7 in the water outlet direction. The arc edge of the fan-shaped blade 6 is connected to the water outlet side edge of the pipe nozzle bracket 5, and multiple fan-shaped blades 6 are arranged circumferentially.

[0021] In this embodiment, the second one-way valve assembly 4 is arranged at the outlet end of the well pipe 1, and a pipe mouth bracket 5 is installed at the pipe mouth. The pipe mouth bracket 5 can be locked at the pipe mouth by snap-fitting or a locking clamp. The pipe mouth bracket 5 is annular, and a bearing net 7 is arranged on the inner side. On the water outlet side, a plurality of fan-shaped blades 6 are arranged on the pipe mouth bracket 5, and the arc-shaped edges are connected to the pipe mouth bracket 5. When water is discharged, the fan-shaped blades 6 spread out under the action of water. When the water level of the rainwater well rises and overflows the outlet end, the fan-shaped blades 6 will be closed under the action of pressure to avoid backflow.

[0022] The first one-way valve assembly 3 includes a connecting pipe 8 and a duckbill hose 9 arranged in the connecting pipe 8. The well pipe 1 includes a first part 10 and a second part 11. The first part 10 and the second part 11 are connected by means of the connecting pipe 8. The direction from the large diameter end to the flat mouth end of the duckbill hose 9 is the same as the water outlet direction of the well pipe 1.

[0023] In this embodiment, the first one-way valve assembly 3 is installed in the U-shaped structure of the well pipe 1 close to the outer well pipe 2, wherein the well pipe 1 is divided into a first part 10 and a second part 11, and the disconnection point is located on the side of the vertical part of the U-shaped structure close to the outer well pipe 2. The first part 10 and the second part 11 are connected through a connecting pipe 8, and a duckbill hose 9 is arranged in the connecting pipe 8. The direction from the large diameter end to the flat mouth end of the duckbill hose 9 is the same as the water outlet direction in the well pipe 1. When water is discharged, the water flows from the large diameter end of the duckbill hose 9 toward the flat mouth end and is in a passage state. When no water is discharged, the flat mouth end is closed to prevent rainwater from backflowing and to form a water seal in the pipe to prevent odor in the rainwater well from entering the indoor area through the pipe.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rainwater well anti-backflow pipeline structure, characterized in that: The anti-backflow pipeline structure is used to be arranged on the middle side wall of the rainwater well and pass through the side wall of the rainwater well. The anti-backflow pipeline structure comprises an inner well pipe (1) and an outer well pipe (2). The outer well pipe (2) is arranged horizontally. The inner well pipe (1) is arranged as a U-shaped structure. The outlet end of the inner well pipe (1) faces downward, the opening of the U-shaped structure faces downward, and the vertical height of the outlet end of the inner well pipe (1) is higher than the vertical height of the outer well pipe (2).

2. The anti-backflow pipeline structure of the rainwater well according to claim 1 is characterized in that: The anti-backflow pipeline structure also includes a first one-way valve assembly (3) and a second one-way valve assembly (4), wherein the first one-way valve assembly (3) is arranged on a side of the U-shaped structure of the well pipe (1) close to the well pipe (2), and the second one-way valve assembly (4) is arranged at the outlet end of the U-shaped structure of the well pipe (1).

3. The anti-backflow pipeline structure of the rainwater well according to claim 2 is characterized in that: The second one-way valve assembly (4) comprises a pipe nozzle bracket (5) and a fan-shaped blade (6) arranged on the pipe nozzle bracket (5); the pipe nozzle bracket (5) is clamped at the outlet end of the well pipe (1); the pipe nozzle bracket (5) is provided with a bearing net (7) in the water outlet direction; the arc edge of the fan-shaped blade (6) is connected to the water outlet side edge of the pipe nozzle bracket (5); and a plurality of the fan-shaped blades (6) are arranged circumferentially.

4. The anti-backflow pipeline structure of the rainwater well according to claim 2 or 3, characterized in that: The first one-way valve assembly (3) comprises a connecting pipe (8) and a duckbill hose (9) arranged in the connecting pipe (8); the well pipe (1) comprises a first part (10) and a second part (11); the first part (10) and the second part (11) are connected by means of the connecting pipe (8); the direction from the large diameter end to the flat mouth end of the duckbill hose (9) is the same as the water outlet direction of the well pipe (1).

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