CN206325296U - A kind of early-stage rainwater automatic back-flushing filtering device - Google Patents

Abstract

The utility model discloses a kind of early-stage rainwater automatic back-flushing filtering device, characterized in that, it includes water leg, the first rainwater down pipe, the second rainwater down pipe, the 3rd rainwater down pipe, the first bend pipe, the second bend pipe, the 3rd bend pipe, the 4th bend pipe, the 5th bend pipe, the first transverse tube, the second transverse tube, the 3rd transverse tube, the first water collector, the second water collector, outlet pipe, backwash tube, backwash switch valve, linker pipe, upper filter screen, lower filter screen, filtrate, the first eyelid retractor, the second eyelid retractor, sloped roof；It can be artificially, regularly filter screen, filtrate backwashed, the preliminary good filtration effect to early-stage rainwater and stable.

Description

A kind of early-stage rainwater automatic back-flushing filtering device

Technical field

The utility model is related to a kind of early-stage rainwater filter, and more particularly to a kind of early-stage rainwater automatic backflushing is washed Filter device.

Background technology

With environmental pollution it is serious, living standards of the people carried and people's consciousness of saving water enhancing, rainwater water money The concern of people is also increasingly mentioned in source, therefore, significant for the Collection utilization of rainwater resource.The filtering of rainwater is An essential part in rainwater purification processing procedure, especially for early-stage rainwater.China is at present to early-stage rainwater Collection processing is in the primary stage, and what the processing to early-stage rainwater was typically chosen is abandoned stream, is directly discharged into municipal administration life dirty Grid.But early-stage rainwater due to containing the polluter such as substantial amounts of organic matter, suspension, grease, pathogen, and pollutant Concentration is higher, and processing load of the sewage treatment plant to sewage can be increased by being directly discharged into sanitary sewage pipe network.If being directly discharged into downstream Water body, serious pollution will be caused to water body.

Common net formula filter good filtration effect, resistance is small, therefore is employed extensively, but its shortcoming is also very Substantially, the blocking and cleaning for being easily contaminated thing are complicated, generally require that device just dismantle could be to filter house Divide and cleaned.

Utility model content

The purpose of this utility model is that there is provided a kind of early-stage rainwater automatic backflushing in order to overcome the shortcomings of above-mentioned background technology Filter is washed, filtration fraction can be rinsed automatically.

The utility model provides a kind of early-stage rainwater automatic back-flushing filtering device, it include water leg, the first rainwater down pipe, Second rainwater down pipe, the 3rd rainwater down pipe, the first bend pipe, the second bend pipe, the 3rd bend pipe, the 4th bend pipe, the 5th bend pipe, the first transverse tube, Second transverse tube, the 3rd transverse tube, the first water collector, the second water collector, outlet pipe, backwash tube, backwash switch valve, linker Pipe, upper filter screen, lower filter screen, filtrate, the first eyelid retractor, the second eyelid retractor, sloped roof；It is equipped with immediately below described sloped roof It is terminated with the first described rainwater down pipe under described water leg, described water leg, described the first rainwater down pipe and described the One transverse tube is vertically connected with the first described bend pipe, and the first described transverse tube and the second rainwater down pipe are hung down using the second described bend pipe Directly lead to；The second described rainwater down pipe, the first water collector, the 3rd bend pipe are in turn switched on below second bend pipe；Described The horizontal port of three bend pipes is connected with described backwash tube, and described backwash switch valve is provided with described backwash tube； The left port of the lower port of 3rd bend pipe and described linker pipe is connected, and is set in the left test tube wall of described linker pipe There is described filtrate, the top of described filtrate is provided with described upper filter screen, and the bottom of described filtrate is provided with described lower filter Net；The lower port of the right output port of described linker pipe and the second described water collector is connected, described the second water collector it is upper Connected at the water outlet of port with second transverse tube；The second described transverse tube utilizes described the 4th curved with the 3rd described rainwater down pipe Pipe is connected, and the 3rd described rainwater down pipe is connected with described outlet pipe using the 5th described bend pipe.

Beneficial effect：The beneficial effects of the utility model are artificially, regularly filter screen, filtrate to be recoiled Wash, the preliminary good filtration effect to early-stage rainwater and stable.

Brief description of the drawings

Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：

Fig. 1 is a kind of planar structure schematic diagram of early-stage rainwater automatic back-flushing filtering device embodiment of the utility model；

Fig. 2 is a kind of mistake of the linker pipe front end of early-stage rainwater automatic back-flushing filtering device embodiment of the utility model Filter schematic device；

Embodiment

Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model, but the embodiment should not be understood For to limitation of the present utility model.

The present embodiment provides a kind of early-stage rainwater automatic back-flushing filtering device, as described in Figure 1, and it includes water leg 1, the One rainwater down pipe 2.1, the second rainwater down pipe 2.2, the 3rd rainwater down pipe 2.3, the first bend pipe 3.1, the second bend pipe 3.2, the 3rd bend pipe 3.3, 4th bend pipe 3.4, the 5th bend pipe 3.5, the first transverse tube 4.1, the second transverse tube 4.2, the 3rd transverse tube 4.3, the first water collector 5.1, Two-into-one breeching 5.2, outlet pipe 6, backwash tube 7, backwash switch valve 8, linker pipe 9, upper filter screen 10.1, lower filter screen 10.2, Filtrate 11, the first eyelid retractor 12.1, the second eyelid retractor 12.2, sloped roof 13；Institute is equipped with immediately below described sloped roof 13 The first described rainwater down pipe 2.1, the first described rainwater down pipe 2.1 and institute are terminated with the water leg 1 stated, described water leg 1 The first transverse tube 4.1 stated vertically is connected with the first described bend pipe 3.1, the first described transverse tube 4.1 and the profit of the second rainwater down pipe 2.2 Vertically connected with the second described bend pipe 3.2；The lower section of second bend pipe 3.2 in turn switch on the second described rainwater down pipe 2.2, First water collector 5.1, the 3rd bend pipe 3.3；The horizontal port of 3rd bend pipe is connected with described backwash tube 7, described Described backwash switch valve 8 is provided with backwash tube 7；The lower port of 3rd bend pipe and a left side for described linker pipe 9 Port is connected, and the left test tube wall of described linker pipe 9 is interior to be provided with described filtrate 11, and the top of described filtrate 11 is provided with institute The upper filter screen 10.1 stated, the bottom of described filtrate 11 is provided with described lower filter screen 10.2；The right output port of described linker pipe 9 Connected with the lower port of the second described water collector 5.2, with described second at the upper port water outlet of described the second water collector 5.2 Transverse tube 4.2 is connected；The second described transverse tube 4.2 is connected with the 3rd described rainwater down pipe 2.3 using the 4th described bend pipe 3.4, The 3rd described rainwater down pipe 2.3 is connected with described outlet pipe 6 using the 5th described bend pipe 3.5, when the recoil described in closing When washing switch valve 8, rainwater can smoothly be filtered, flowed out, meanwhile, there is foot in the second described water collector 5.2 at the end of the rainfall Enough remaining rainwater can be backwashed to filter.

Specifically, in the early-stage rainwater automatic back-flushing filtering device that the utility model is provided, first rainwater down pipe 2.1 It is limited in the lower section of the water leg 1 using the second described eyelid retractor 12.2, described the first transverse tube 4.1 utilizes described the One eyelid retractor 12.1 is supported on above the ground.

Specifically, as described in Figure 2, it is described in the early-stage rainwater automatic back-flushing filtering device that the utility model is provided Upper filter screen 10.1 is bigger than the aperture of described lower filter screen 10.2, and it is larger that rainwater first passes through the described filtering particle diameter of upper filter screen 10.1 Pollutant, then by filtering the relatively small pollution of particle diameter by described lower filter screen 10.2 again after described filtrate 11 Thing, it is therefore an objective to when backwashing, the pollutant in filtrate can be smoothly by described upper filter screen 10.1, then from backwash tube In flow out together with sewage, and set on described filtrate 11 the described upper filter screen 10.1 can to increase described lower filter screen The disposal ability of 10.2 pairs of pollutional loads, prevents from blocking.

Preferably, in the early-stage rainwater automatic back-flushing filtering device that the utility model is provided, described filtrate 11 is used Be volcanic rock, cheap, good filtration effect, filter effect is stable after backwash.

Specifically, in the early-stage rainwater automatic back-flushing filtering device that the utility model is provided, catchmented with described second Horizontal plane where the top of device is AA1 horizontal planes, using the horizontal plane where the bottom of the second described water collector as BB1 levels Face, the bottom of first water collector 5.1 is higher than AA1 horizontal planes, and described backwash tube 7 is concordant with BB1 horizontal planes, described The water level of second water collector 5.2 is located between AA1 horizontal planes and BB1 horizontal planes, closes described backwash switch valve 8, works as drop After rain terminates, the water level in described the first water collector 5.1 and the second described water collector 5.2 can drop to AA1 faces, anti-when opening Flush switching valve, waterline can drop to BB1 faces, and the water of the second described water collector 5.2 ensure that between AA1 faces and BB1 faces What is backwashed is smoothed out.

The utility model the utility model provide early-stage rainwater automatic back-flushing filtering device can be artificially, regularly Filter screen, filtrate are backwashed, the preliminary good filtration effect to early-stage rainwater and stable.

Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model New spirit and scope.So, if it is of the present utility model these modification and modification belong to the utility model claim and Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.

Claims (5)

1. a kind of early-stage rainwater automatic back-flushing filtering device, it is characterised in that：It includes water leg, the first rainwater down pipe, second Rainwater down pipe, the 3rd rainwater down pipe, the first bend pipe, the second bend pipe, the 3rd bend pipe, the 4th bend pipe, the 5th bend pipe, the first transverse tube, second Transverse tube, the 3rd transverse tube, the first water collector, the second water collector, outlet pipe, backwash tube, backwash switch valve, linker pipe, on Filter screen, lower filter screen, filtrate, the first eyelid retractor, the second eyelid retractor, sloped roof；It is equipped with immediately below described sloped roof described Water leg, be terminated with the first described rainwater down pipe under described water leg, described the first rainwater down pipe and described first horizontal Effective the first described bend pipe is vertically connected, and described the first transverse tube and the second rainwater down pipe connect using described second bend pipe is vertical It is logical；The second described rainwater down pipe, the first water collector, the 3rd bend pipe are in turn switched on below second bend pipe；Described 3rd is curved The horizontal port of pipe is connected with described backwash tube, and described backwash switch valve is provided with described backwash tube；It is described The lower port of 3rd bend pipe and the left port of described linker pipe are connected, and the left test tube wall of described linker pipe is interior to be provided with institute The filtrate stated, the top of described filtrate is provided with described upper filter screen, and the bottom of described filtrate is provided with described lower filter screen；Institute The right output port for the linker pipe stated and the lower port of the second described water collector are connected, and the upper port of the second described water collector goes out Connected at water with second transverse tube；The second described transverse tube is connect with the 3rd described rainwater down pipe using the 4th described bend pipe Logical, the 3rd described rainwater down pipe is connected with described outlet pipe using the 5th described bend pipe.

2. early-stage rainwater automatic back-flushing filtering device as claimed in claim 1, it is characterised in that：The first rainwater down pipe profit The lower section of the water leg is limited in the second described eyelid retractor, the first described transverse tube utilizes the first described eyelid retractor branch Support is square on the ground.

3. early-stage rainwater automatic back-flushing filtering device as claimed in claim 1, it is characterised in that：Described upper filter screen compares institute The aperture for the lower filter screen stated is big.

4. early-stage rainwater automatic back-flushing filtering device as claimed in claim 1, it is characterised in that：What described filtrate was used It is volcanic rock.

5. early-stage rainwater automatic back-flushing filtering device as claimed in claim 1, it is characterised in that：First water collector Bottom is not less than the top of the second described water collector, and described backwash tube is not higher than the second described browser at the bottom of the catchment.