Anti-return-overflow system for vertical pipe offset of drainage system of high-rise housing

Abstract

The utility model discloses an anti-return-overflow system for the offset of a vertical pipe of a high-rise housing drainage system. The anti-return-overflow system comprises a drainage vertical pipe, a drainage transverse main pipe, an offset drainage vertical pipe, a drainage transverse branch pipe, a sanitary ware, an annular ventilation pipe and a common top-extending ventilation vertical pipe or a special ventilation vertical pipe, the pipeline system is simple in structure, the upper end of the annular ventilation pipe is connected with the drainage vertical pipe or the special ventilation vertical pipe, the lower end of the annular ventilation pipe is connected with the bottom floor drainage transverse branch pipe, and the connecting point is located between the two sanitary ware. Compressed air is diffused to a drainage vertical pipe or a special ventilation vertical pipe through the annular ventilation pipe, the effects of eliminating pressure fluctuation in a drainage transverse branch pipe of a bottom floor and solving drainage overflow of the bottom floor are achieved, when the total unfolding length of the annular ventilation pipe does not exceed 10 m, the maximum passing air flow of the annular ventilation pipe is about 10.5 L / s, and when the unfolding length of the annular ventilation pipe does not exceed 10 m, the maximum passing air flow of the annular ventilation pipe is about 10.5 L / s. And the total drainage capacity of the drainage riser system is exceeded.

Description

Technical Field

[0001] The utility model belongs to the technical field of drainage, and in particular relates to an anti-overflow system for a high-rise residential drainage system when a vertical pipe is offset. Background Art

[0002] At present, with the widespread construction of high-rise residential buildings, overflow and odor return from the bottom floors of the drainage system often occur. The types of drainage riser systems used in high-rise residential drainage systems mainly include: ordinary top-extending ventilation risers, special ventilation risers, special single risers, etc. For special single riser drainage systems, the current standards have relatively detailed bottom-level anti-overflow measures, but for drainage systems using ordinary top-extending ventilation risers and special ventilation risers, when the axis of the riser of the drainage pipe system on the bottom floor is offset, according to the design regulations of the current national standards, there are no technical measures to properly solve the bottom floor overflow. Utility Model Content

[0003] The utility model is mainly for overcoming the deficiencies of the prior art and provides an anti-overflow system for the offset of the vertical pipe of the drainage system of a high-rise residential building.

[0004] The utility model is realized by the following technical solutions:

[0005] A backflow prevention system for high-rise residential drainage system risers when the risers are offset, comprising: a drainage riser, a drainage horizontal main pipe, an offset drainage riser, a drainage horizontal branch pipe, sanitary appliances, an annular vent pipe, a common top-extending vent riser or a special vent riser;

[0006] The drainage riser runs vertically through the entire high-rise residential building, one end of the drainage horizontal main pipe is horizontally connected to one side of the bottom end of the drainage riser, and the offset drainage riser is vertically connected to the other end of the drainage horizontal main pipe and extends downward; the drainage horizontal branch pipe includes an upper floor drainage horizontal branch pipe and a bottom floor drainage horizontal branch pipe, and the sanitary ware of each upper floor is connected to the drainage riser through the upper floor drainage horizontal branch pipe, and the sanitary ware of the bottom floor residence is connected to the drainage horizontal main pipe or the offset drainage riser through the bottom floor drainage horizontal branch pipe;

[0007] The upper end of the annular ventilation pipe is connected to the drainage riser or the special ventilation riser, and the lower end is connected to the bottom floor drainage lateral branch pipe; when the annular ventilation pipe is connected to the drainage riser, an ordinary top-extending ventilation riser is also provided, which is connected to the upper floor drainage lateral branch pipe of the topmost layer and extends upward to the outdoors; when the annular ventilation pipe is connected to the special ventilation riser, the special ventilation riser is communicated with the drainage riser.

[0008] In the above technical solution, when the bottom floor drainage lateral branch pipe is connected to the drainage lateral main pipe, the connection point between the bottom floor drainage lateral branch pipe and the drainage lateral main pipe is at a horizontal distance of not less than 1.5m downstream from the bottom of the drainage riser.

[0009] In the above technical solution, when the bottom floor drainage branch pipe is connected to the offset drainage riser, the connection point between the bottom floor drainage branch pipe and the offset drainage riser should be no less than 0.6m below the turning point of the offset drainage riser and the drainage horizontal main pipe.

[0010] In the above technical solution, when the annular vent pipe is connected to the drainage riser, an inclined pipeline (the pipeline is an H-pipe) extending upward from the drainage riser is arranged at the connection of the annular vent pipe to the drainage riser, and the connection part between the annular vent pipe and the drainage riser is at a distance H1 of not less than 2m from the bottom of the drainage riser.

[0011] In the above technical solution, when the annular ventilation pipe is connected to the dedicated ventilation riser, the dedicated ventilation riser is connected to the drainage riser through the H-tube.

[0012] In the above technical solution, when the total unfolded length of the annular ventilation tube does not exceed 10m, the maximum air flow rate that can pass through it is about 10.5L / s.

[0013] The advantages and beneficial effects of the utility model are:

[0014] The pipeline system of the utility model has a simple structure. The upper end of the annular ventilation pipe is connected to the drainage riser or the special ventilation riser, and the lower end is connected to the drainage lateral branch pipe on the bottom floor, and the connection point is located between the two sanitary appliances. When pressure fluctuations occur in the drainage lateral branch pipe on the bottom floor, the compressed air is diffused to the drainage riser or the special ventilation riser through the annular ventilation pipe, thereby eliminating the pressure fluctuations in the drainage lateral branch pipe on the bottom floor and solving the problem of drainage overflow on the bottom floor. When the total unfolded length of the annular ventilation pipe does not exceed 10m, the maximum air flow rate that can pass through the annular ventilation pipe is about 10.5L / s, which exceeds the total drainage capacity of the drainage riser system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a first structural schematic diagram of the utility model when a common top-extending ventilation riser is adopted.

[0016] Figure 2 This is a second structural schematic diagram of the utility model when a common top-extending ventilation riser is adopted.

[0017] Figure 3 This is a first structural schematic diagram of the utility model when a dedicated ventilation riser is used.

[0018] Figure 4This is a first structural schematic diagram of the utility model when a dedicated ventilation riser is used.

[0019] In the figure, there are drainage riser 1, drainage horizontal main pipe 2, offset drainage riser 3, drainage horizontal branch pipe 4, upper floor drainage horizontal branch pipe 4.1, bottom floor drainage horizontal branch pipe 4.1, sanitary ware 5, annular ventilation pipe 6, and special ventilation riser 7.

[0020] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below in conjunction with specific embodiments.

[0022] A backflow prevention system for high-rise residential drainage system when the riser is offset, see attached Figure 1-4 , including: drainage riser 1, drainage horizontal main pipe 2, offset drainage riser 3, drainage horizontal branch pipe 4, sanitary ware 5, annular vent pipe 6, ordinary top-extending vent riser or special vent riser 7.

[0023] The drainage riser 1 vertically runs through the entire high-rise residential building, one end of the drainage horizontal main pipe 2 is horizontally connected to one side of the bottom end of the drainage riser 1, and the offset drainage riser 3 is vertically connected to the other end of the drainage horizontal main pipe 2 and extends downward; the drainage horizontal branch pipe 4 includes an upper floor drainage horizontal branch pipe 4.1 and a bottom floor drainage horizontal branch pipe 4.2, and the sanitary ware 5 of each upper floor is connected to the drainage riser 1 through the upper floor drainage horizontal branch pipe 4.1, and the sanitary ware 5 of the bottom floor residence is connected to the drainage horizontal main pipe 2 or the offset drainage riser 3 through the bottom floor drainage horizontal branch pipe 4.2. Specifically:

[0024] When the bottom floor drainage lateral branch pipe 4.2 is connected to the drainage lateral main pipe 2, see the attached Figure 1 As a preferred embodiment, the connection point between the bottom floor drainage horizontal branch pipe 4.2 and the drainage horizontal main pipe 2 is not less than 1.5m from the bottom downstream of the drainage riser 1; when the bottom floor drainage horizontal branch pipe 4.2 is connected to the offset drainage riser 3, see the attached Figure 2 Preferably, the connection point between the bottom floor drainage branch pipe 4.2 and the offset drainage riser 3 should be no less than 0.6m below the turning point of the offset drainage riser 3 and the drainage horizontal main pipe 2.

[0025] The upper end of the annular ventilation pipe 6 is connected to the drainage riser 1 or the dedicated ventilation riser 7, and the lower end is connected to the bottom floor drainage horizontal branch pipe 4.2.

[0026] When the annular vent pipe 6 is connected to the drainage riser 1 ( Figure 1 and Figure 2 In the state), a common top-extending ventilation riser (not shown in the figure) is also provided which is connected to the upper floor drainage horizontal branch pipe 4.1 of the uppermost layer and extends upward to the outdoors. The annular ventilation pipe 6 connects the bottom floor drainage horizontal branch pipe 4.2 with the air in the drainage riser 1. Preferably, an inclined pipeline (the pipeline is an H pipe) upward from the drainage riser 1 is provided at the connection of the annular ventilation pipe 6 to the drainage riser 1 to prevent water in the drainage riser 1 from entering the annular ventilation pipe 6. The connection part between the annular ventilation pipe 6 and the drainage riser 1 is not less than 2m away from the bottom of the drainage riser 1 at a distance H1; in the state where the annular ventilation pipe 6 is connected to the dedicated ventilation riser 7 ( Figure 3 and Figure 4 state), the dedicated ventilation riser 7 is connected to the drainage riser 1. Preferably, the dedicated ventilation riser 7 is connected to the drainage riser 1 through an H tube to prevent water in the drainage riser 1 from entering the dedicated ventilation riser 7. The annular ventilation pipe 6 connects the bottom floor drainage horizontal branch pipe 4.2 with the air in the dedicated ventilation riser 7.

[0027] When pressure fluctuation occurs in the drainage lateral branch pipe 4.2 of the bottom floor, the compressed air diffuses to the drainage riser 1 or the dedicated ventilation riser 7 through the annular ventilation pipe 6, thereby eliminating the pressure fluctuation in the drainage lateral branch pipe 4.2 of the bottom floor and solving the problem of drainage overflow on the bottom floor.

[0028] Preferably, when the total unfolded length of the annular ventilation pipe 6 does not exceed 10 m, the maximum air flow rate that can pass through it is about 10.5 L / s, which exceeds the total drainage capacity of the drainage riser system.

[0029] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0030] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0031] The above is an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be done by other technical personnel in this field without expending creative labor falls within the protection scope of the present invention.

Claims

1. A backflow prevention system for high-rise residential drainage system when the riser is offset, characterized by: Including drainage riser, drainage horizontal main pipe, offset drainage riser, drainage horizontal branch pipe, sanitary ware, annular vent pipe, ordinary top extension vent riser or special vent riser; The drainage riser runs vertically through the entire high-rise residential building, one end of the drainage horizontal main pipe is horizontally connected to one side of the bottom end of the drainage riser, and the offset drainage riser is vertically connected to the other end of the drainage horizontal main pipe and extends downward; the drainage horizontal branch pipe includes an upper floor drainage horizontal branch pipe and a bottom floor drainage horizontal branch pipe, and the sanitary ware of each upper floor is connected to the drainage riser through the upper floor drainage horizontal branch pipe, and the sanitary ware of the bottom floor residence is connected to the drainage horizontal main pipe or the offset drainage riser through the bottom floor drainage horizontal branch pipe; The upper end of the annular ventilation pipe is connected to the drainage riser or the special ventilation riser, and the lower end is connected to the bottom floor drainage lateral branch pipe; when the annular ventilation pipe is connected to the drainage riser, an ordinary top-extending ventilation riser is also provided, which is connected to the upper floor drainage lateral branch pipe of the topmost layer and extends upward to the outdoors; when the annular ventilation pipe is connected to the special ventilation riser, the special ventilation riser is communicated with the drainage riser.

2. The anti-overflow system for the offset riser of a high-rise residential drainage system according to claim 1, characterized in that: When the bottom floor drainage branch pipe is connected to the drainage horizontal main pipe, the connection point between the bottom floor drainage branch pipe and the drainage horizontal main pipe shall be at least 1.5m horizontally downstream from the bottom of the drainage riser.

3. The anti-overflow system for the offset riser of a high-rise residential drainage system according to claim 1, characterized in that: When the bottom floor drainage branch pipe is connected to the offset drainage riser, the connection point between the bottom floor drainage branch pipe and the offset drainage riser should be no less than 0.6m below the turning point of the offset drainage riser and the drainage horizontal main pipe.

4. The anti-overflow system for the offset riser of a high-rise residential drainage system according to claim 1, characterized in that: When the annular vent pipe is connected to the drainage riser, an inclined pipeline upward from the drainage riser is arranged at the connection of the annular vent pipe to the drainage riser, and the connection part between the annular vent pipe and the drainage riser is not less than 2m from the bottom of the drainage riser.

5. The anti-overflow system for the offset riser of a high-rise residential drainage system according to claim 1, characterized in that: When the annular ventilation pipe is connected to the dedicated ventilation riser, the dedicated ventilation riser is communicated with the drainage riser through the H pipe.

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