CN206385741U - A kind of siphon drainge system for building - Google Patents

Abstract

The utility model discloses a siphon drainage system for large buildings, which comprises a plurality of water collecting pipes, the lower ends of the plurality of water collecting pipes communicate with the upper ends of straight pipes through connecting pipes, and the lower ends of the straight pipes extend vertically downwards to ground drains, and The upper end of the water collection pipe is provided with a rainwater bucket, and a plurality of energy dissipation units are arranged on the inner wall of the straight pipe, and the energy dissipation unit includes a water baffle and a spiral concave opening on the inner peripheral wall of the straight pipe along the axis of the straight pipe. The water retaining plate is fixed on the inner wall of the straight pipe and is located below the spiral groove, and a discharge hole is arranged in the middle of the water retaining plate. Multiple energy dissipation units communicate with each other through discharge holes, and the fluid consumes energy step by step through multiple energy dissipation units, which prolongs the service life of the straight pipe and greatly reduces the kinetic energy of the fluid at the outlet of the straight pipe, that is Reduce the impact of fluids on building foundations.

Description

A siphon drainage system for large buildings

technical field

The utility model relates to the field of building drainage, in particular to a siphon drainage system for large buildings.

Background technique

At present, there are two main ways to drain rainwater on the roof: one is the traditional gravity rainwater drainage system. The effect of gravity goes down the standpipe; this way of drainage is inefficient, requires a large number of pipes, the diameter of the pipes is large, and a slope of 1%-3% is required, and the installation is complicated. The other is the siphon rainwater drainage system. In the initial stage of rainfall, when the depth of rainwater on the roof is relatively shallow, the rainwater still uses the principle of gravity to drain the rainwater. When the rainfall increases and the water level on the roof reaches a certain height, the rainwater The bucket will automatically block the air, thereby creating a siphon, and the drainage system will be transformed into an efficient drainage system, which will pump rainwater and discharge it downwards. Although the efficiency of the siphon drainage system is much higher than that of the gravity drainage system, there are still some shortcomings in the current siphon drainage system: the height of some buildings is too high, and the closer to the ground in the riser, the greater the potential energy. The residual pressure and flow velocity at the pipe outlet are relatively large, which will have a relatively large impact on the building foundation. On the other hand, it will cause the negative pressure of the drainage system to exceed the standard, which does not meet the design regulations of the siphon drainage system; this may shorten the service life of the standpipe in the long run. And in many buildings with high height and complex structure, it is very difficult to replace the standpipe; second, the rainwater still carries a small part of air into the rainwater bucket, first of all, the efficiency of drainage is reduced, and the air reaches the system In the negative pressure zone, the pressure in the negative pressure zone will increase, resulting in poor suction function of the negative pressure zone for rainwater, which will affect the drainage efficiency of the entire system; 3. The sediment in the rainwater will flow into the level through the rainwater bucket In the suspension pipes, for a long time, the sediment will deposit in the suspension pipes and block the suspension pipes. Once the above situation occurs, the sediment in the suspension pipes is very difficult to clean, and it is also very difficult to replace the suspension pipes. .

Utility model content

The purpose of the utility model is to provide a siphon drainage system for large buildings, which solves the problem of excessive residual pressure and flow velocity at the water outlet of the standpipe in the system, and prolongs the service life of the drainage pipe.

The utility model is realized through the following technical solutions:

A siphon drainage system for large buildings, comprising a plurality of water collecting pipes, the lower ends of the plurality of water collecting pipes communicate with the upper ends of straight pipes through connecting pipes, the lower ends of the straight pipes extend vertically downwards to the ground drains, and the upper ends of the water collecting pipes are provided with The rainwater bucket is provided with a plurality of energy dissipation units on the inner wall of the straight pipe, and the energy dissipation unit includes a water baffle and a spiral groove provided on the inner peripheral wall of the straight pipe along the axis of the straight pipe, and the water baffle It is fixed on the inner wall of the straight pipe and located under the spiral groove, and a discharge hole is provided in the middle of the water baffle. In view of the relatively high construction height of large buildings in the prior art, the potential energy of the position closer to the ground in the straight pipe used for rainwater drainage is greater, which will not only cause the residual pressure and flow velocity at the outlet of the straight pipe to be too large, and further aggravate the flow of the fluid. The impact on the building foundation can also easily cause the negative pressure of the drainage system to exceed the standard, so as to reduce the service life of the drainage pipeline; in this regard, the inventor improved the existing straight pipe so that the fluid in the straight pipe will fall with time during the falling process. Energy conversion and self-dissipation, in order to reduce the conversion efficiency of fluid potential energy into kinetic energy, ensure that the fluid at the outlet of the straight pipe smoothly and stably enters the drainage channel of the building, and reduce the impact of the fluid on the inner wall of the straight pipe , while ensuring the service life of the straight pipe. In specific use, rainwater enters the water collection pipe from the rainwater bucket, and the rainwater in multiple water collection pipes gathers in the connecting pipe, and then is discharged into the drainage channel through the straight pipe; the gathered fluid itself has high potential energy. As the fluid moves in the straight pipe, the potential energy begins to be converted into kinetic energy, and the fluid quickly enters the straight pipe, and after being continuously redirected by the spiral groove, the fluid forms a vortex in the straight pipe, and the vortex will consume part of the kinetic energy converted from the potential energy , and the setting of the spiral groove makes a continuous protrusion formed in an energy dissipation unit area in the straight pipe, so that the fluid in the energy dissipation area will form a water film on the inner wall of the straight pipe, thereby increasing the resistance of the fluid, that is, further consuming The kinetic energy of the fluid prevents the fluid from forming a severe impact on the inner wall of the straight pipe. Furthermore, the water baffle makes the cross section of the fluid flow suddenly smaller, so that the flow of the fluid is instantly hindered, and the water baffle is also subject to a greater impact , and the fluid can quickly enter the next energy dissipation unit through the discharge hole, which can quickly transfer the instantaneous load of the water baffle to avoid damage to the water baffle or the connection between the water baffle and the inner wall of the straight pipe, thus It can be seen that the fluid in one energy dissipation unit will be subjected to three different degrees of kinetic energy loss; while multiple energy dissipation units are connected to each other through discharge holes, and the fluid consumes energy step by step through multiple energy dissipation units, extending the length of the straight pipe. The service life of the straight pipe is greatly reduced, and the kinetic energy of the fluid after the straight pipe outlet is greatly reduced, that is, the impact of the fluid on the foundation of the building is reduced.

A plurality of adjusting holes distributed in an annular shape are also arranged on the water retaining plate, and the inner diameters of the adjusting holes are smaller than the inner diameters of the discharge holes. After the fluid is redirected by the spiral groove, it finally enters the energy dissipation unit of the next stage through the discharge hole, and there are a number of adjustment holes with an inner diameter smaller than the discharge hole on the water baffle. The main channel of the row and the multiple adjustment holes are used as the auxiliary channels of the lower row of fluid, which can ensure that the fluid form flowing out of the energy dissipation unit of the upper stage will gradually change from swirling flow to direct flow, further increasing the energy loss of the fluid. Then the swirling flow is restored in the energy dissipation unit of the next stage, that is, the secondary overall energy consumption of the fluid begins.

A flow valve is also included, and the upper end of the water collecting pipe is connected with the lower end of the rain bucket through the flow valve. As a preference, when the amount of rain in summer is large, the excessive flow of fluid in the water collecting pipe, connecting pipe or straight pipe may easily lead to excessive impact and damage to the local pipeline. Therefore, the inventor installed a flow valve on the upper end of the water collecting pipe, That is, the inflow of rainwater at the rainwater bucket can be controlled to reduce the pressure of the drainage pipeline and the underground drainage system, so as to prolong the service life of the drainage pipeline.

The flow valve is an electromagnetic flow valve. As a preference, the electromagnetic flow valve is selected, which can realize manual control of the rainwater intake on the ground, abandons the traditional manual adjustment, and greatly improves the drainage efficiency of the drainage pipeline.

A sand settling tank is installed directly below the rain bucket. As a preference, a settling tank is installed under the rainwater bucket to prevent the sediment in the rainwater from flowing into the connecting pipe through the rainwater bucket and the water collection pipe for sedimentation, effectively preventing the connecting pipe from being blocked by sand and increasing the service time of the entire system .

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. The utility model is a siphon drainage system for large buildings. Multiple energy dissipation units communicate with each other through discharge holes, and the fluid consumes energy step by step after passing through multiple energy dissipation units, which prolongs the use of straight pipes. life, and greatly reduce the kinetic energy of the fluid behind the outlet of the straight pipe, that is, reduce the impact of the fluid on the foundation of the building;

2. The utility model is a siphon drainage system used for large buildings. When the amount of rain in summer is large, the fluid flow in the water collection pipe, connecting pipe or straight pipe is too large, which will easily lead to excessive impact on the local pipeline and appear Therefore, the inventor installed a flow valve on the upper end of the water collection pipe, which can control the amount of rainwater entering the rainwater bucket, reduce the pressure of the drainage pipeline and the underground drainage system, and prolong the service life of the drainage pipeline;

3. The utility model is a siphon drainage system for large buildings. A settling tank is installed under the rainwater bucket to prevent the sediment in the rainwater from flowing into the connecting pipe through the rainwater bucket and the water collection pipe for precipitation, which is effective It prevents the connecting pipe from being blocked by sand and increases the service time of the whole system.

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the utility model, constitute a part of the application, and do not constitute a limitation to the embodiments of the utility model. In the attached picture:

Fig. 1 is the structural representation of the utility model;

Figure 2 is a cross-sectional view of a straight pipe.

Marks and corresponding parts names in the attached drawings:

1-rain bucket, 2-sand sink, 3-collecting pipe, 4-straight pipe, 5-spiral groove, 6-discharge hole, 7-regulating hole, 8-water retaining plate, 9-flow valve.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the examples and accompanying drawings. The schematic implementation of the utility model and its description are only used to explain the utility model Novelty, not as a limitation to the utility model.

Example 1

As shown in Figures 1 and 2, this embodiment includes a plurality of water collecting pipes 3, the lower ends of the plurality of water collecting pipes 3 communicate with the upper ends of the straight pipes 4 through connecting pipes, and the lower ends of the straight pipes 4 extend vertically downwards to the ground drains, and in the collection The upper end of the water pipe 3 is provided with a rainwater bucket 1, and a plurality of energy dissipation units are provided on the inner wall of the straight pipe 4, and the energy dissipation units include a water baffle 8 and are set in the straight pipe 4 along the axis of the straight pipe 4. The spiral groove 5 on the circumferential wall, the water retaining plate 8 is fixed on the inner wall of the straight pipe 4 and is located below the spiral groove 5, and the middle part of the water retaining plate 8 is provided with a discharge hole 6.

During specific use, rainwater enters the water collection pipe 3 from the rainwater bucket 1, and the rainwater in the multiple water collection pipes 3 gathers in the connecting pipe, and then is discharged into the drain through the straight pipe 4; As the fluid moves in the straight pipe 4, the potential energy begins to convert into kinetic energy, and the fluid quickly enters the straight pipe 4, and after the continuous redirection of the spiral groove 5, the fluid forms a section of vortex in the straight pipe 4 , the vortex will convert potential energy into kinetic energy and consume part of it, and the setting of the spiral groove 5 makes a continuous protrusion formed in an energy dissipation unit area in the straight pipe 4, so that the fluid in the energy dissipation area will flow on the inner wall of the straight pipe 4 Form a water film on the top of the pipe, thereby increasing the resistance of the fluid, that is, further consuming the kinetic energy of the fluid, and avoiding the severe impact of the fluid on the inner wall of the straight pipe 4. Furthermore, the water baffle 8 makes the flow section of the fluid suddenly smaller, so that the fluid The flow of the water baffle 8 is instantaneously hindered, and accordingly the water baffle 8 is also subject to a greater impact, and the fluid can quickly enter the next energy dissipation unit through the discharge hole 6, which can quickly transfer the instantaneous load of the water baffle 8 to avoid The water baffle 8 or the connection part between the water baffle 8 and the inner wall of the straight pipe 4 is damaged, so it can be seen that the fluid in one energy dissipation unit will be subjected to three different degrees of kinetic energy loss; The holes 6 are connected to each other, and the fluid consumes energy step by step through multiple energy dissipation units, prolonging the service life of the straight pipe 4, and greatly reducing the kinetic energy of the fluid after the outlet of the straight pipe 4, that is, reducing the impact of the fluid on the building. The impact of the material base.

In this embodiment, a plurality of adjusting holes 7 distributed in an annular shape are also provided on the water retaining plate 8 , and the inner diameter of the adjusting holes 7 is smaller than the inner diameter of the discharge hole 6 . After being redirected by the spiral groove 5, the fluid finally enters the next-level energy dissipation unit through the discharge hole 6, and a plurality of adjustment holes 7 with an inner diameter smaller than the inner diameter of the discharge hole 6 are arranged on the water baffle 8, so that the discharge The orifice 6 serves as the main flow channel for the lower flow of the fluid, and the plurality of adjustment holes 7 serve as the auxiliary channels for the lower flow of the fluid, which can ensure that the form of the fluid flowing out of the upper-level energy dissipation unit gradually changes from swirl flow to direct flow, and further Increase the energy loss of the fluid, and then return to the swirling flow in the energy dissipation unit of the next stage, that is, start the secondary overall energy consumption of the fluid.

As preferably, when the amount of rainwater in summer is large, the excessive fluid flow in the water collecting pipe 3, the connecting pipe or the straight pipe 4 may easily cause the local part of the pipeline to receive too much impact and cause damage. Installing the flow valve 9 can control the rainwater inflow at the rain bucket 1, reduce the pressure of the drainage pipeline and the underground drainage system, and prolong the service life of the drainage pipeline.

As a preference, the electromagnetic flow valve is selected, which can realize manual control of the rainwater intake on the ground, abandons the traditional manual adjustment, and greatly improves the drainage efficiency of the drainage pipeline.

As a preference, a settling tank 2 is installed below the rainwater bucket 1 to prevent the sediment in the rainwater from flowing into the connecting pipe through the rainwater bucket 1 and the water collecting pipe 3 for precipitation, effectively preventing the connecting pipe from being blocked by silt and increasing the overall System usage time.

The specific implementation manners described above have further described the purpose, technical solutions and beneficial effects of the present utility model in detail. Within the protection scope of the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (5)

1. A siphon drainage system for large buildings, comprising a plurality of water collecting pipes (3), the lower ends of the plurality of water collecting pipes (3) communicate with the upper ends of the straight pipes (4) through connecting pipes, and the lower ends of the straight pipes (4) are vertically It extends down to the ground drain, and a rain bucket (1) is provided at the upper end of the water collection pipe (3), and it is characterized in that: a plurality of energy dissipation units are arranged on the inner wall of the straight pipe (4), and the energy dissipation The unit includes a water baffle (8) and a spiral groove (5) provided on the inner peripheral wall of the straight pipe (4) along the axis of the straight pipe (4), and the water baffle (8) is fixed on the straight pipe (4) On the inner wall and below the spiral groove (5), a discharge hole (6) is provided in the middle of the water retaining plate (8). 2. A siphon drainage system for large buildings according to claim 1, characterized in that: a plurality of annularly distributed regulating holes (7) are also provided on the water retaining plate (8), And the inner diameter of the regulating hole (7) is smaller than the inner diameter of the discharge hole (6). 3. A siphon drainage system for large buildings according to claim 1, characterized in that: it also includes a flow valve (9), the upper end of the water collection pipe (3) passes through the flow valve (9) and the rainwater bucket (1) The lower end is connected. 4. A siphon drainage system for large buildings according to claim 3, characterized in that: the flow valve (9) is an electromagnetic flow valve. 5. A siphon drainage system for large buildings according to claim 1, characterized in that: a sand settling tank (2) is installed directly under the rainwater bucket (1).