CN205894157U - An initial rainwater diversion filter device - Google Patents

Abstract

The utility model discloses an initial rainwater diversion and filtration device, which comprises a diversion three-way pipe, a filtration tank and a discharge pipe which are connected with the lower end of a rainwater vertical pipe; the filtering tank is positioned below the three-way flow dividing pipe, and the discharge pipe is positioned on one side of the filtering tank and the three-way flow dividing pipe; the flow dividing three-way pipe is provided with a drain pipe connected with the rainwater vertical pipe and an overflow pipe I connected with the drain pipe; a filter body is arranged in the filter tank, the filter tank is divided into an upper part and a lower part by the porous plate, the upper part of the filter tank is provided with a planting groove, and the lower part of the filter tank is provided with a water storage tank; the planting groove forms the filter body; a capillary suction pipe is inserted on the porous plate, and an overflow pipe II connected with the discharge pipe is arranged at the upper part of the water storage tank. The utility model discloses can thoroughly purify the initial stage rainwater.

Description

An initial rainwater diversion filter device

technical field

The utility model belongs to the technical field of rainwater storage and utilization and water supply and drainage, in particular to an initial rainwater diversion filter device.

Background technique

Due to the initial rainfall, the rainwater dissolves a large amount of polluting gases such as acid gas, automobile exhaust and factory exhaust gas in the air, and after falling on the roof, it has a scouring effect on the roof, so that the initial rainwater on the roof contains a large amount of suspended solids and other pollutants , resulting in a higher degree of pollution and poor water quality in the initial rainwater. In the later period of rainfall, the pollutant content gradually decreased to a relatively stable level. Therefore, from the perspective of sustainable utilization of water resources, it is necessary to divert and filter the initial rainwater.

Contents of the invention

The utility model provides an initial rainwater diversion filter device for solving the technical problems in the known technology.

The technical scheme adopted by the utility model for solving the technical problems existing in the known technology is: an initial rainwater diversion and filtration device, comprising a diversion tee connected to the lower end of the rainwater standpipe, a filter tank and a discharge pipe; the filter tank Located below the diversion tee pipe, the discharge pipe is located on one side of the filter tank and the diversion tee pipe; the diversion tee pipe is provided with a drainage pipe connected to the rainwater riser and connected to the The overflow pipe I connected to the discharge pipe, the overflow pipe I is arranged obliquely, and the inlet is lower and the outlet is higher, the inlet of the overflow pipe I is connected to one side of the drain pipe, and the overflow pipe I The outlet of the outlet is connected with the discharge pipe; the lower end of the drain pipe is provided with a water outlet, and the flow area of the water outlet is smaller than the flow area of the drain pipe; a filter body is provided in the filter tank, so The filter body is supported by a porous plate, and the porous plate is supported by the side wall of the filter tank. The porous plate divides the filter tank into upper and lower parts, and the upper part of the filter tank is a planting tank. The lower part of the pool is a water storage tank; a geotextile is laid on the upper surface of the porous plate, soil is filled in the planting tank, plants are planted on the soil, the plants, the The soil body and the geotextile constitute the filter body; a capillary straw is inserted on the porous plate, and the upper end of the capillary straw extends through the geotextile at the bottom of the soil body, and the capillary straw The lower end of the water storage tank extends to the bottom of the water storage tank; the upper part of the water storage tank is provided with an overflow pipe II connected with the discharge pipe; the outlet of the overflow pipe II is lower than the inlet of the overflow pipe II .

A filter screen is arranged at the outlet of the drain pipe.

A cleaning port is provided at the lower part of the drain pipe.

A support ring plate is welded on the side wall of the filter tank, and the porous plate is placed on the support ring plate.

The advantages and positive effects that the utility model has are:

1) Good filtering effect: the initial rainwater and small flow rainwater enter the filter tank through the diversion tee pipe. The filter tank uses planting tanks as the filter body, and uses plants and soil to realize the adsorption and interception of pollutants in the initial rainwater, and the effluent water quality is good; rainwater After being filtered and purified by plants and soil, it is stored in the water storage tank. The water storage tank can automatically replenish water for the planting tank through the capillary suction tube. At the same time, the water storage tank also functions as a sedimentation tank. Therefore, the utility model can thoroughly purify the initial rainwater.

2) High ornamental practicability: Integrate rainwater filtration with planting tanks, use plants and soil to filter initial rainwater during rainy days, and realize water storage and automatic watering in water tanks during droughts.

3) High stability: no power control device, low maintenance frequency. At the same time, it is very suitable for general rainfall and heavy rainfall.

4) Low cost of installation and maintenance: It is installed on the ground, the structure is relatively simple, the cost of required accessories is low, the installation is convenient, and the maintenance in the future is convenient, saving most of the manpower and material resources, and reducing the cost of use.

Description of drawings

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

Among the figure: 1, rainwater riser, 2-1, drainage pipe, 2-2, overflow pipe I, 2-3, cleaning port, 2-4, filter screen, 3, water outlet, 4, discharge pipe, 5 -1, porous plate, 5-2, geotextile, 5-3, plant, 5-4, soil body, 5-5, support ring plate, 5-6, capillary suction tube, 5-7, overflow pipe II.

detailed description

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Please refer to Fig. 1, a kind of primary rainwater diversion filtering device, comprises the diversion tee pipe that links to each other with rainwater riser 1 lower end, filter pond and discharge pipe 4; Described filter pond is positioned at the below of described diversion tee pipe, and described The discharge pipe 4 is located on one side of the filter tank and the diversion tee.

The diversion tee is provided with a drainage pipe 2-1 connected to the rainwater standpipe 1 and an overflow pipe I2-2 connected to the discharge pipe 4. The overflow pipe I2-2 is arranged obliquely, and the entrance is relatively The lower outlet is higher, the inlet of the overflow pipe I2-2 is connected to one side of the drain pipe 2-1, and the outlet of the overflow pipe I2-2 is connected to the discharge pipe 4.

A water outlet 3 is provided at the lower end of the drain pipe 2-1, and the flow area of the water outlet 3 is smaller than that of the drain pipe 2-1.

A filter body is provided in the filter tank, the filter body is supported by a porous plate 5-1, the porous plate 5-1 is supported by the side wall of the filter tank, and the porous plate 5-1 filters the The pool is divided into upper and lower parts, the upper part of the filter pool is a planting tank, and the lower part of the filter pool is a water storage tank; a geotextile 5-2 is laid on the upper surface of the porous plate 5-1, and the The planting groove is filled with a soil body 5-4, and a plant 5-3 is planted on the soil body 5-4, and the plant 5-3, the soil body 5-4 and the geotextile 5- 1 constitutes the filter body.

A capillary 5-6 is inserted on the porous plate 5-1, and the upper end of the capillary 5-6 extends through the geotextile 5-2 at the bottom of the soil 5-4. The lower ends of the capillary tubes 5-6 extend to the bottom of the water storage tank.

An overflow pipe II5-7 connected to the discharge pipe 4 is provided on the upper part of the water storage tank; the outlet of the overflow pipe II5-7 is lower than the inlet of the overflow pipe II5-7.

In the early stage of rainfall and during the period of small flow rainfall, the rainwater enters the diversion tee through the rainwater standpipe 1, flows into the filter tank through the water outlet 3, and passes through the plants 5-3, soil 5-4, geotextile 5-2 and porous plate 5-1 Stored in the lower water storage tank, when the water storage tank is full, the rainwater in the tank is discharged through the overflow pipe Ⅱ5-7. When encountering heavy rainfall, the water level in the three-way pipe gradually rises due to the flow difference in the middle and late stages of the rainfall until it is discharged by the overflow pipe I2-2. The water discharged through the overflow pipe I2-2 and the overflow pipe II5-7 is clean rainwater, which can enter the water storage tank or the water storage module through the discharge pipe 4. When drought occurs, the water in the water storage tank enters the upper soil through the capillary suction pipes 5-6 to realize automatic water replenishment.

In this embodiment, a filter screen 2-4 is provided at the outlet of the drain pipe 2-1, and the filter screen 2-4 is located above the water outlet 3, and the mesh hole is smaller than the diameter of the water outlet 3, which can prevent debris (such as leaves) block the water outlet 3. In order to ensure the cleaning of the filter screen 2-4, a cleaning port 2-3 is provided near the lower filter screen 2-4 of the drain pipe 2-1, so as to facilitate timely cleaning of sundries. In order to facilitate installation and disassembly, a support ring plate 5-5 is welded on the side wall of the filter tank, and the porous plate 5-1 is placed on the support ring plate 5-5.

Although the preferred embodiment of the utility model has been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative and not restrictive. Under the enlightenment of the utility model, those skilled in the art can also make many forms without departing from the purpose of the utility model and the protection scope of the claims, and these all belong to the protection scope of the utility model.

Claims (4)

1. a kind of initial stage rainwater diversion filter device, it is characterized in that, comprise the diversion tee that links to each other with the rainwater riser lower end, filter tank and discharge pipe; Described filter tank is positioned at the below of described diversion tee, and described discharge The pipe is located on one side of the filter tank and the diversion tee; the diversion tee is provided with a drainage pipe connected to the rainwater standpipe and an overflow pipe I connected to the discharge pipe, and the overflow The pipe I is arranged obliquely, and the inlet is lower and the outlet is higher. The inlet of the overflow pipe I is connected to one side of the drain pipe, and the outlet of the overflow pipe I is connected to the discharge pipe; The lower end of the pipe is provided with a water outlet, and the flow area of the water outlet is smaller than the flow area of the drain pipe; a filter body is provided in the filter tank, and the filter body is supported by a porous plate, and the porous plate is composed of The side wall of the filter tank is supported, and the porous plate divides the filter tank into upper and lower parts, the upper part of the filter tank is a planting tank, and the lower part of the filter tank is a water storage tank; A geotextile is laid on the upper surface of the planter, soil is filled in the planting groove, plants are planted on the soil, and the plant, the soil and the geotextile constitute the filter body; A capillary is inserted on the porous plate, the upper end of the capillary extends through the geotextile at the bottom of the soil body, and the lower end of the capillary extends to the bottom of the water storage tank; The upper part of the water storage tank is provided with an overflow pipe II connected with the discharge pipe; the outlet of the overflow pipe II is lower than the inlet of the overflow pipe II. 2. The initial rainwater diversion filter device according to claim 1, characterized in that a filter screen is provided at the outlet of the drainpipe. 3 . The initial rainwater separation and filtering device according to claim 1 , wherein a cleaning port is provided at the lower part of the drain pipe. 4 . 4 . The primary rainwater diversion filter device according to claim 1 , wherein a support ring plate is welded on the side wall of the filter tank, and the porous plate is placed on the support ring plate.