External drainage switching device of internal drainage rainwater pipe

Abstract

The utility model discloses an outer drainage switching device of an inner drainage rainwater pipe. The outer drainage switching device comprises the inner drainage rainwater pipe and a three-way valve arranged at the bottom of the inner drainage rainwater pipe. A roof rainwater hopper is arranged at the top end of the inner rainwater drainage pipe, and a three-way valve is arranged at the lower end of the inner rainwater drainage pipe. Wherein a rainwater discharging pipe is arranged on a lateral opening of the three-way valve. The three-way valve is additionally arranged at the position, suitable for being used as the outer rainwater drainage pipe, of the inner rainwater drainage pipe for rainwater drainage; therefore, the problem that water is accumulated in a roof and a building when the inner rainwater drainage pipe does not meet the use condition during construction is solved, the engineering quality is guaranteed, and social and economic benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of internal rainwater pipe engineering, in particular to an internal rainwater pipe external discharge switching device. Background Art

[0002] Conventional internal drainage rainwater pipes have the advantages of easy maintenance and safety; they do not affect the outdoor appearance; they will not freeze and clog in cold areas, which are advantages that ordinary external drainage rainwater pipes do not have. Therefore, they are more and more widely used. However, in the actual construction process, the progress of outdoor supporting projects often lags behind that of indoor projects. In fact, many projects will not start the construction of outdoor supporting projects until the indoor projects are completely completed.

[0003] This leads to water accumulation on the ground inside the building during the construction process, which has a very adverse impact on the construction progress and quality. However, the external rainwater pipe can solve this problem and discharge the rainwater directly to the outside through the external pipe. Therefore, when the indoor rainwater system has been completed but the outdoor rainwater pipe network has not been completed, how to combine the internal and external rainwater pipes to drain the water on the roof and prevent rainwater from entering the building has become a direction that needs to be studied urgently. Utility Model Content

[0004] The utility model aims to provide an internal-drainage rainwater pipe external-drainage switching device to solve the problem of how to drain roof water and prevent rainwater from entering the interior of the building when the indoor rainwater system is completed but the outdoor rainwater pipe network is not completed.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides an internal rainwater pipe external discharge switching device, comprising an internal rainwater pipe and a three-way valve arranged at the bottom of the internal rainwater pipe;

[0007] A roof rainwater gutter is arranged at the top of the inner rainwater pipe, a three-way valve is arranged at the lower end of the inner rainwater pipe, and an outer rainwater pipe is arranged on the lateral opening of the three-way valve.

[0008] Furthermore, the upper end of the inner rainwater pipe extends to the roof of the building;

[0009] The top of the inner rainwater pipe at the upper end is provided with a roof rainwater gutter, and the upper part of the inner rainwater pipe at the lower end is provided with a flexible joint structure adapted to the three-way valve.

[0010] Furthermore, the internal rainwater pipe and three-way valve are both made of PVC.

[0011] Furthermore, the external rainwater pipe also includes an external riser.

[0012] Compared with the prior art, the beneficial technical effects of the utility model are:

[0013] In the present application, rainwater is discharged externally by installing a three-way valve and an external drainage pipe at a position suitable for the internal drainage rainwater pipe; thereby solving the problem of water accumulation on the roof and inside the building when the internal drainage rainwater pipe is not suitable for use during construction, ensuring the quality of the project and improving the social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is the inner row cross-sectional view of the utility model;

[0016] Figure 2 It is an external row cross-sectional view of the utility model;

[0017] Figure 3 This is a schematic diagram of the working state of the three-way valve of the utility model;

[0018] Figure 4 It is a schematic diagram of another working state of the three-way valve of the utility model.

[0019] Explanation of the accompanying drawings: 1. Internal rainwater pipe; 2. Three-way valve; 3. Roof rainwater gutter; 4. External rainwater pipe. DETAILED DESCRIPTION

[0020] This embodiment discloses an internal rainwater pipe external discharge switching device, comprising an internal rainwater pipe 1, and a three-way valve 2 installed at the bottom of the internal rainwater pipe 1;

[0021] A roof rainwater gutter 3 is installed at the top of the inner rainwater pipe 2; an outer rainwater pipe 4 is installed on the side opening of the three-way valve 2;

[0022] A three-way valve is installed at the upper part of an appropriate pipeline position, and the three-way valve is adjusted to a side discharge position, and then an external rainwater pipe 4 is connected at the three-way position to discharge rainwater externally.

[0023] In this embodiment, the upper end of the inner rainwater pipe 1 extends to the roof of the building;

[0024] A roof rain gutter 3 is installed at the upper end of the inner rainwater pipe 1 located at the uppermost layer, and a flexible joint structure adapted to the three-way valve 2 is provided at the upper part of the inner rainwater pipe 1 located at the lower end.

[0025] The inner rainwater pipe 1 and the three-way valve 2 are both made of PVC.

[0026] In the prior art, when the internal drainage system has been completed but the outdoor pipe network has not been laid, and therefore the conditions for use are not met, the technical solution of this embodiment serves as a device for discharging rainwater externally.

[0027] In the construction project, rainwater is discharged externally by installing a three-way valve 2 at a position suitable for a temporary external rainwater pipe 4 on the internal rainwater pipe 1.

[0028] Install a flexible joint below the pipeline position. After the outdoor pipe network is installed, you can choose to remove the external rainwater pipe 4 and adjust the three-way valve to the direct discharge position. Then firmly connect the lower outflow rainwater pipe to the flexible joint at the bottom of the three-way valve to restore the normal operation of the internal rainwater system.

[0029] Most of the internal rainwater pipes 1 are made of PVC. A three-way valve is installed at the position of the riser where the temporary external rainwater pipe is installed. Then the upper and lower ends of the tee are connected to the riser respectively, and then the external rainwater pipe is installed and laid and firmly connected to the outlet end of the tee. The riser of the internal rainwater pipe 1 can be used to discharge rainwater by controlling the three-way valve. When the conditions for internal rainwater drainage are met, the external rainwater pipe 4 can be removed, and then the lower outlet rainwater pipe is firmly connected to the lower part of the three-way valve. Then the normal operation of the internal rainwater system is restored by controlling the three-way valve.

[0030] The utility model solves the problem of water accumulation on the roof and inside the building when the internal rainwater pipe 1 is not in use during construction, ensures the quality of the project and improves the social and economic benefits.

[0031] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solution of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A switching device for internal rainwater pipe external discharge, characterized in that: It comprises an inner rainwater drainage pipe (1) and a three-way valve (2) arranged at the bottom of the inner rainwater drainage pipe (1); A roof rainwater gutter (3) is arranged at the top end of the inner rainwater pipe (1); and an outer rainwater pipe (4) is arranged on the lateral opening of the three-way valve (2).

2. The internal rainwater pipe external discharge switching device according to claim 1 is characterized in that: The upper end of the inner rainwater pipe (1) extends to the roof of the building; A roof rainwater gutter (3) is arranged at the upper end of the inner rainwater pipe (1), and a flexible joint structure adapted to the three-way valve (2) is arranged at the lower end of the inner rainwater pipe (1).

3. The internal rainwater pipe external discharge switching device according to claim 1 is characterized in that: The internal rainwater pipe (1) and the three-way valve (2) are both made of PVC.

4. The internal rainwater pipe external discharge switching device according to claim 1 is characterized in that: The external rainwater pipe (4) also includes an external vertical pipe.

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