CN220725306U - Building site rainwater collection device - Google Patents

Abstract

The embodiment of the application provides a building site rainwater collection device belongs to rainwater and collects technical field. The building site rainwater collection device comprises a drainage ditch and a filtering tank, wherein the drainage ditch is used for collecting and draining rainwater on the ground; the filtering tank is communicated with the drainage ditch so as to collect and purify the surface rainwater which is collected by the drainage ditch; the filter tank is provided with a water inlet and a water outlet, a first filter area and a second filter area are arranged below the water inlet along the height direction of the filter tank, the first filter area is arranged closer to the water inlet than the second filter area, a filter screen is arranged in the first filter area, and the filter screen is used for performing primary filtration on rainwater entering the filter tank; the second filtering area is internally provided with a filtering layer, the filtering layer is filled with filter materials, the filtering layer is used for purifying and filtering rainwater filtered by the filter screen, and the water outlet is arranged at one side of the bottom of the filtering tank. The rainwater collecting device for the construction site can effectively improve the filtering effect on rainwater and is beneficial to secondary recycling of the rainwater.

Description

Building site rainwater collection device

Technical Field

The application relates to the technical field of rainwater collection, in particular to a building site rainwater collection device.

Background

The existing rainwater of building site generally only does preliminary sediment and carries out the efflux promptly, and the efflux water can't reach the water requirement completely steadily, and this water needs the retrieval and utilization simultaneously, and the rainwater after its preliminary sediment is unable to be recycled because of the quality of water problem, considers the building site tension simultaneously, and the position is unfixed, leads to unable better to carry out recovery processing to building site rainwater. The utility model provides a patent of CN218292113U discloses a rainwater is collected and is recycled system, its include rainwater collection facility, through collecting the pipeline communicate in rainwater collection facility's sedimentation tank, through outlet pipe connect in sedimentation tank's pressurized water tank, through water pipe communicate in pressurized water tank's on-the-spot water facility, the sedimentation tank include the cell body, set up in filter plate in the cell body, inlet opening and apopore have been seted up respectively to the cell body lateral wall, collecting the pipeline with outlet pipe communicate respectively in the inlet opening with the apopore, the filter plate is the infundibulate setting and the middle part is equipped with the mounting hole, fixedly connected with dust collecting box in the mounting hole, dust collecting box bottom intercommunication has the extension to the outside blow off pipe of cell body. This scheme can filter recycle to the rainwater, but only filters the rainwater through the filter screen in this scheme, and is not high to the filtration degree of rainwater, still has impurity particles in the rainwater to smuggle easily, and follow-up when utilizing the rainwater to carry out the reutilization, when utilizing the rainwater to carry out building site dust fall pipeline, the rainwater causes the jam to the pipeline easily, and consequently the purification degree of recycle of rainwater is still especially important.

Disclosure of Invention

The embodiment of the application provides a building site rainwater collection device, can effectively improve the filter effect to the rainwater, does benefit to the secondary recycle of rainwater.

The embodiment of the application provides a building site rainwater collection device, and the building site rainwater collection device comprises a drainage ditch and a filtering tank, wherein the drainage ditch is used for collecting and draining rainwater on the ground; the filtering tank is communicated with the drainage ditch so as to collect and purify the surface rainwater which is collected by the drainage ditch; the filter tank is provided with a water inlet and a water outlet, a first filter area and a second filter area are arranged below the water inlet along the height direction of the filter tank, the first filter area is arranged closer to the water inlet than the second filter area, a filter screen is arranged in the first filter area, and the filter screen is used for primary filtering of rainwater entering the filter tank; the second filtering area is internally provided with a filtering layer, the filtering layer is internally filled with filter materials, the filtering layer is used for purifying and filtering rainwater filtered by the filter screen, and the water outlet is arranged at one side of the bottom of the filtering tank and is used for discharging the rainwater filtered by the filtering layer.

In this scheme, through the rainwater with the help of escape canal, can collect the earth's surface, drain into in the filtering ponds with rainwater after the collection of escape canal and filter. Through being provided with the filter screen in the first filtration district of filtering ponds, the filter screen can carry out preliminary filtration to getting into the sewage in the filtering ponds, remain partial impurity granule on the filter screen, carry out preliminary filtration's effect to the rainwater, the rainwater after the filter screen filters gets into the second filtration district in filtering ponds below, owing to the filter material is filled in the second filtration district, the purity degree of rainwater after the secondary filtration is higher like this, the rainwater is used for spraying system dust removal like this subsequently, the road sprays, afforestation watering or vehicle flushing equipment water supply etc. is difficult to the jam pipeline, do benefit to the sustainable utilization of rainwater recovery.

In some embodiments, the cross-sectional area of the first filtration zone is less than the cross-sectional area of the second filtration zone.

Among the above-mentioned technical scheme, because be the filter screen in the first filtration district, the second is filtered the district and is the filter layer, and the rainwater can pass through the filter screen fast after getting into in first filtration, then gets into in the second filtration district, because the filtration rate of the filter layer in the second filtration district is less than in the filter screen, consequently rationally set up the cross sectional area of first filtration district and second filtration district, more do benefit to the filtration of filter vat to the rainwater.

In some embodiments, the filter tank is provided with a first overflow duct at a top surface side of the filter layer, the first overflow duct being used for discharging rainwater accumulated on an upper surface of the second filter area to cope with rainy season.

Among the above-mentioned technical scheme, when coping rainy season, the rainwater passes through the escape canal and discharges into the speed of filtering ponds faster, and the speed of entering in the filtering ponds is greater than the drainage speed of filter layer to the rainwater when the rainwater, then the rainwater just can be detained and accumulate on the surface of filter layer, through being provided with first overflow pipeline in the top surface one side of filter layer, first overflow pipeline can discharge the rainwater of accumulating at second filtering area upper surface, has reduced the filtration pressure of filter layer.

In some embodiments, the filter screen is disposed in the first filtering area in an inclined manner, and comprises a first side and a second side along the height direction of the filtering tank, the first side is lower than the second side, and the inner wall of the filtering tank is provided with a bearing table in a protruding manner at a position corresponding to the first side and the second side, wherein the bearing table is used for bearing the first side and the second side.

Among the above-mentioned technical scheme, through setting up the filter screen slope in first filtration district, the rainwater gets into the impurity on the filter screen like this and can lean on under the effect of gravity and the direction of first side under the impact effect of rainwater, compares with flat filter screen, the filter screen that the slope set up on the filter screen has reduced the probability that is blockked up by impurity to the impurity can draw close to the direction of first side by the second side of filter screen under the effect of gravity, does not need to set up anti-blocking mechanism and realizes preventing of filter screen, has simplified the structure, and the cost is lower. The plummer mainly plays support and bearing effect to the filter screen, and the filter screen can be comparatively firm install in the filtering ponds, can not take place to empty because of the rainwater impact.

In some embodiments, the filter tank is provided with a slag discharge port at a position of the first side edge, and the slag discharge port is used for discharging impurities on the filter screen under the action of gravity.

In the above technical scheme, the position department through the filter vat at first side has seted up the row's cinder notch, and the row's cinder notch can supply the impurity on the filter screen to arrange outside the filter vat, avoids impurity to pile up at the first side of filter screen and influence the normal work of filter screen.

In some embodiments, the filter tank is connected with a dustbin on one side of the slag discharge port, the dustbin is communicated with the slag discharge port, and the dustbin is used for allowing impurities accumulated on the filter screen to enter through the slag discharge port.

According to the technical scheme, the dustbin is connected to one side of the slag discharging port of the filter tank and is communicated with the slag discharging port, and impurities on the filter screen can be collected and temporarily stored by the dustbin.

In some embodiments, the water inlet of the filter tank is flush with the ground, the filter tank is buried below the ground, a pit is dug in one side of the dustbin in the filter tank, and the pit is used for arranging the dustbin.

Among the above-mentioned technical scheme, through digging to be equipped with the pit to with the filter tank wholly bury in the earth's surface, rainwater that the escape canal was collected like this can directly flow into in the filter tank, need not with the help of equipment such as elevator pump, more energy-conserving.

In some embodiments, a lifting assembly is arranged in the pit, the driving end of the lifting assembly is connected with the dustbin, so that the dustbin is driven to switch between a working position and a discharging position, when the dustbin is in the working position, the dustbin is positioned at one side of the slag discharging port and is communicated with the slag discharging port, and when the dustbin is in the discharging position, the dustbin is not lower than the top surface of the filtering tank and is exposed out of the ground.

In the above-mentioned technical scheme, through being provided with lifting unit in the pit, when clearing up the impurity in the dustbin like this, only need carry the dustbin to by working position lift to the position of unloading through lifting unit, the dustbin just exposes outside ground like this, and the staff of being convenient for clears up the impurity in the dustbin, and after the clearance was accomplished, lifting unit moved the dustbin back to working position alright, alleviateed staff's working strength.

In some embodiments, the lifting assembly comprises a lifting frame, a screw rod, a driving piece, a nut seat and a guide part, wherein the screw rod is rotatably installed on the lifting frame along the vertical direction, the nut seat is in threaded fit with the screw rod, the nut seat is connected with the dustbin, the driving piece is installed on the lifting frame, the driving end of the driving piece is in driving connection with the screw rod, the guide part is installed on the lifting frame, the nut seat is in sliding fit with the guide part, and the guide part is used for guiding the nut seat to axially move along the screw rod.

In the above-mentioned technical scheme, through adopting lifting unit as screw-nut pair mechanism, drive the lead screw and rotate under the effect of driving piece, because nut seat and guiding part sliding fit prevent that the nut seat from following the lead screw and rotate, the nut seat can only follow the extending direction of lead screw like this to realize the oscilaltion of dustbin, the moving accuracy is high, simple structure easily realizes.

In some embodiments, the water outlet is connected with a water reservoir, the water reservoir is used for temporarily storing filtered rainwater, a second overflow pipeline is arranged in the water reservoir, and the second overflow pipeline is arranged on the upper side in the water reservoir.

According to the technical scheme, the water storage tank is connected with the water outlet, the water storage tank can store filtered rainwater temporarily, and the rainwater utilization assembly can be communicated with the water storage tank to utilize the rainwater in the water storage tank. In order to control the water quantity in the reservoir, a second overflow pipeline is arranged on one side of the top of the reservoir, and the second overflow pipeline can discharge redundant rainwater to a pipe network system.

The beneficial effect of this scheme is: through being provided with the filter screen in the first filtration district of filtering ponds, the filter screen can carry out preliminary filtration to getting into the sewage in the filtering ponds, remain partial impurity granule on the filter screen, carry out preliminary filtration's effect to the rainwater, the rainwater after the filter screen filters gets into the second filtration district in filtering ponds below, owing to the filter material is filled in the second filtration district, the purity degree of rainwater after the secondary filtration is higher like this, the rainwater is used for spraying system dust removal like this subsequently, the road sprays, afforestation watering or vehicle flushing equipment water supply etc. is difficult to the jam pipeline, do benefit to the sustainable utilization of rainwater recovery. The filter screen that the slope set up has reduced the probability that is blockked up by impurity to impurity can be drawn close to the direction of first side by the second side of filter screen under the action of gravity, does not need to set up anti-blocking mechanism and realizes preventing of filter screen that the structure has been simplified, and the cost is lower. Through being provided with lifting unit in the pit, when clearing up impurity in the dustbin like this, only need carry the dustbin to by working position lift to the position of unloading through lifting unit, the dustbin just exposes outside ground like this, and the staff of being convenient for clears up impurity in the dustbin, and after the clearance was accomplished, lifting unit moved the dustbin back to working position alright, alleviateed staff's working strength.

Additional features and advantages of the present application will be set forth in the detailed description which follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a construction site rainwater harvesting apparatus provided in some embodiments of the present application;

fig. 2 is a schematic structural view of the dustbin in fig. 1 after being lifted by a lifting assembly.

Icon: 10-drainage ditches; 20-a filter tank; 21-a first filtration zone; 22-a second filtration zone; 23-a filter screen; 230-a first side; 231-a second side; 24-a filter layer; 25-water inlet; 26-water outlet; 27-a bearing table; 28-a slag discharge port; 30-a first overflow conduit; 40-a dustbin; 50-lifting assembly; 51-lifting frame; 52-screw rod; 53-a driving member; 54-a nut seat; 200-ground; 201-pit.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present application, it should be noted that, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is conventionally put in use of the product of the application, only for convenience of description and simplification of the description, and is not indicative or implying that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those skilled in the art in the specific case.

Examples

The embodiment of the application provides a building site rainwater collection device, please refer to fig. 1 and 2, the building site rainwater collection device comprises a drainage ditch 10 and a filtering pond 20, wherein the drainage ditch 10 is used for collecting and draining rainwater on the ground 200; the filter tank 20 is communicated with the drainage ditch 10 to collect and purify the surface rainwater which is collected by the drainage ditch 10; the filter tank 20 is provided with a water inlet 25 and a water outlet 26, a first filter area 21 and a second filter area 22 are arranged below the water inlet 25 along the height direction of the filter tank 20, the first filter area 21 is arranged closer to the water inlet 25 than the second filter area 22, a filter screen 23 is arranged in the first filter area 21, and the filter screen 23 is used for primarily filtering rainwater entering the filter tank 20; the second filtering area 22 is internally provided with a filtering layer 24, the filtering layer 24 is filled with filtering materials, the filtering layer 24 is used for purifying and filtering rainwater filtered by the filtering net 23, and the water outlet 26 is arranged at one side of the bottom of the filtering tank 20 and is used for discharging the rainwater filtered by the filtering layer 24.

In this embodiment, rainwater on the ground surface can be collected by means of the drainage ditch 10, and the rainwater is collected by the drainage ditch 10 and then discharged into the filtering tank 20 for filtering. Through being provided with filter screen 23 in the first filtration zone 21 of filtering ponds 20, filter screen 23 can carry out preliminary filtration to getting into the sewage in filtering ponds 20, reserve partial impurity granule on filter screen 23, carry out preliminary filtration's effect to the rainwater, the rainwater after the filter screen 23 filters gets into the second filtration zone 22 in filtering ponds 20 below, owing to the filter material is filled in the second filtration zone 22, the purity degree of rainwater after the secondary filtration is higher like this, the rainwater is used for spraying system dust removal like this subsequently, the road sprays, afforestation watering or vehicle flushing equipment water supply etc. is difficult to the jam pipeline, do benefit to the sustainable utilization of rainwater recovery.

The filter material in the filter layer 24 may be various, for example, the filter material may be crushed stone, haydite, zeolite, etc. In this embodiment, the filter material of the filter layer 24 is ceramic particles and zeolite, the proportion of the ceramic particles to the zeolite can be 1:1, the ceramic particles and the zeolite are convenient to obtain, the cost is low, and the filtering effect is high.

In some embodiments, the cross-sectional area of the first filtration zone 21 is smaller than the cross-sectional area of the second filtration zone 22. Because the filter screen 23 is arranged in the first filter area 21, the second filter area 22 is the filter layer 24, rainwater can quickly pass through the filter screen 23 after entering the first filter and then enter the second filter area 22, and the filter speed of the filter layer 24 in the second filter area 22 is smaller than that of the filter screen 23, so that the cross section areas of the first filter area 21 and the second filter area 22 are reasonably arranged, and the rainwater is filtered by the filter tank 20 more conveniently.

In some embodiments, the filter tank 20 is provided with a first overflow pipe 30 at a top surface side of the filter layer 24, and the first overflow pipe 30 is used for discharging rainwater accumulated on an upper surface of the second filter region 22 to cope with rainy season. When coping with rainy season, the rainwater is discharged into the filtering tank 20 through the drainage ditch more quickly, when the rainwater enters the filtering tank 20 at a speed greater than the filtering speed of the filtering layer 24 to the rainwater, then the rainwater can be retained and accumulated on the surface of the filtering layer 24, and the first overflow pipeline 30 is arranged on one side of the top surface of the filtering layer 24, so that the rainwater accumulated on the upper surface of the second filtering area 22 can be discharged through the first overflow pipeline 30, and the filtering pressure of the filtering layer 24 is reduced.

In some embodiments, the filter screen 23 is disposed obliquely in the first filtering area 21, and along the height direction of the filtering tank 20, the filter screen 23 includes a first side 230 and a second side 231, the height of the first side 230 is lower than the height of the second side 231, the inner wall of the filtering tank 20 is provided with a bearing platform 27 in a protruding manner at a position corresponding to the first side 230 and the second side 231, and the bearing platform 27 is used for bearing the first side 230 and the second side 231. Through setting up filter screen 23 slope in first filtration district 21, the impurity that the rainwater got into on filter screen 23 like this can lean on under the action of gravity and the impact effect of rainwater down to the direction of first side 230, compare with flat filter screen 23, the filtration pore on the filter screen 23 that the slope set up has reduced the probability of being blockked up by impurity to the impurity can draw close to the direction of first side 230 by the second side 231 of filter screen 23 under the action of gravity, does not need to set up anti-blocking mechanism and realizes the anti-blocking of filter screen 23, has simplified the structure, and the cost is lower. The bearing table 27 mainly plays a role in supporting and bearing the filter screen 23, and the filter screen 23 can be stably arranged in the filter tank 20 without falling down due to rain impact.

In some embodiments, the filtering ponds 20 are provided with a slag discharging opening 28 at the position of the first side 230, and the slag discharging opening 28 is used for discharging impurities on the filtering net 23 under the action of gravity. The slag discharging port 28 is formed in the position of the first side 230 of the filter tank 20, and impurities on the filter screen 23 can be discharged out of the filter tank 20 through the slag discharging port 28, so that the phenomenon that the normal operation of the filter screen 23 is influenced due to the fact that the impurities are accumulated on the first side 230 of the filter screen 23 is avoided.

In some embodiments, the filter tank 20 is connected to a dustbin 40 at one side of the slag discharge port 28, the dustbin 40 is communicated with the slag discharge port 28, and the dustbin 40 is used for allowing impurities accumulated on the filter screen 23 to enter through the slag discharge port 28. The dustbin 40 is connected to the filter tank 20 at one side of the slag discharging port 28, the dustbin 40 is communicated with the slag discharging port 28, and the dustbin 40 can collect and temporarily store impurities on the filter screen 23.

In some embodiments, the water inlet 25 of the filter tank 20 is flush with the ground 200, the filter tank 20 is buried below the ground 200, the filter tank 20 is dug with a pit 201 on one side of the dustbin 40, and the pit 201 is used for arranging the dustbin 40. By digging the pit 201 and burying the filter tank 20 on the ground, rainwater collected by the drainage ditch can directly flow into the filter tank 20, and equipment such as a lifting pump is not needed, so that the energy is saved.

In some embodiments, the lifting assembly 50 is disposed in the pit 201, the driving end of the lifting assembly 50 is connected to the dustbin 40 for driving the dustbin 40 to switch between a working position and a discharging position, when the dustbin 40 is in the working position, the dustbin 40 is located at one side of the slag discharging port 28 and is communicated with the slag discharging port 28, and when the dustbin 40 is in the discharging position, the height of the dustbin 40 is not lower than the top surface of the filter tank 20 and is exposed outside the ground 200. Through being provided with lifting unit 50 in pit 201, when clearing up the impurity in the dustbin 40 like this, only need carry dustbin 40 by working position to the position of unloading through lifting unit 50, dustbin 40 just exposes outside ground 200 like this, and the staff of being convenient for clear up impurity in the dustbin 40, after the clearance is accomplished, lifting unit 50 moves dustbin 40 back to working position alright, has alleviateed staff's working strength.

The lifting assembly 50 may be a variety of driving mechanisms, for example, the lifting assembly 50 may be a screw-nut pair structure of a screw rod 52, a hydraulic cylinder, an electric push rod, a gear-rack mechanism, or the like.

In some embodiments, the lifting assembly 50 includes a lifting frame 51, a screw rod 52, a driving member 53, a nut seat 54 and a guiding portion, the screw rod 52 is rotatably mounted on the lifting frame 51 along a vertical direction, the nut seat 54 is in threaded fit with the screw rod 52, the nut seat 54 is connected with the dustbin 40, the driving member 53 is mounted on the lifting frame 51, a driving end of the driving member 53 is in driving connection with the screw rod 52, the guiding portion is mounted on the lifting frame 51, the nut seat 54 is in sliding fit with the guiding portion, and the guiding portion is used for guiding the nut seat 54 to move along an axial direction of the screw rod 52. Through adopting lifting assembly 50 as screw rod 52 nut pair mechanism, drive screw rod 52 rotation under the effect of driving piece 53, owing to nut seat 54 and guide part sliding fit, prevent nut seat 54 to follow screw rod 52 rotation, nut seat 54 can only follow the extending direction of screw rod 52 like this to realize the oscilaltion of dustbin 40, the moving accuracy is high, simple structure, easily realizes.

In some embodiments, the water outlet 26 is connected to a reservoir for temporarily storing filtered rainwater, and a second overflow pipe is disposed in the reservoir and on an upper side of the reservoir. The water outlet 26 is connected with the water reservoir, so that the water reservoir can temporarily store filtered rainwater, and the rainwater utilization assembly can be communicated with the water reservoir to utilize the rainwater in the water reservoir. In order to control the water quantity in the reservoir, a second overflow pipeline is arranged on one side of the top of the reservoir, and the second overflow pipeline can discharge redundant rainwater to a pipe network system.

The rainwater utilization component can be a spraying system dust removing device, a road spraying device, a greening irrigation device or a vehicle flushing device and the like.

It should be noted that, without conflict, features in the embodiments of the present application may be combined with each other.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. A building site rainwater collection device, characterized by comprising:

the drainage ditch is used for collecting and draining rainwater on the ground;

the filtering tank is communicated with the drainage ditch so as to collect and purify the surface rainwater which is collected by the drainage ditch;

the filter tank is provided with a water inlet and a water outlet, a first filter area and a second filter area are arranged below the water inlet along the height direction of the filter tank, the first filter area is arranged closer to the water inlet than the second filter area, a filter screen is arranged in the first filter area, and the filter screen is used for primarily filtering rainwater entering the filter tank; the second filtering area is internally provided with a filter layer, the filter layer is internally filled with filter materials, the filter layer is used for purifying and filtering rainwater filtered by the filter screen, and the water outlet is arranged on one side of the bottom of the filtering tank and is used for discharging the rainwater filtered by the filter layer.

2. The construction site stormwater collection device as claimed in claim 1, wherein the cross-sectional area of the first filtration zone is smaller than the cross-sectional area of the second filtration zone.

3. The construction site rainwater collecting apparatus according to claim 1, wherein the filtering tank is provided with a first overflow pipe at a top surface side of the filtering layer, the first overflow pipe being for discharging rainwater accumulated on an upper surface of the second filtering area to cope with rainy seasons.

4. The construction site rainwater collecting device according to claim 1, wherein the filter screen is obliquely disposed in the first filtering area, the filter screen includes a first side and a second side along a height direction of the filtering tank, the first side is lower than the second side in height, and a carrying table is provided on an inner wall of the filtering tank in a protruding manner at a position corresponding to the first side and the second side, the carrying table being for carrying the first side and the second side.

5. The construction site rainwater collection device according to claim 4, wherein the filter tank is provided with a slag discharge port at the position of the first side edge, and the slag discharge port is used for discharging impurities on the filter screen under the action of gravity.

6. The construction site rainwater collecting apparatus according to claim 5, wherein the filter tank is connected to a dustbin on one side of the slag tap, the dustbin being communicated with the slag tap, the dustbin being for allowing impurities accumulated on the filter screen to enter through the slag tap.

7. The construction site rainwater collection apparatus according to claim 6, wherein the water inlet of the filtering tank is flush with the ground, the filtering tank is buried below the ground, the filtering tank is dug with a pit on one side of the dustbin, and the pit is used for the dustbin to be arranged.

8. The construction site rainwater collecting device according to claim 7, wherein a lifting assembly is arranged in the pit, a driving end of the lifting assembly is connected with the dustbin for driving the dustbin to switch between a working position and a discharging position, when the dustbin is in the working position, the dustbin is located at one side of the slag discharging opening and is communicated with the slag discharging opening, and when the dustbin is in the discharging position, the height of the dustbin is not lower than the top surface of the filter tank and is exposed out of the ground.

9. The construction site rainwater collecting device according to claim 8, wherein the lifting assembly comprises a lifting frame, a screw rod, a driving piece, a nut seat and a guide part, the screw rod is rotatably mounted on the lifting frame in the vertical direction, the nut seat is in threaded fit with the screw rod, the nut seat is connected with a dustbin, the driving piece is mounted on the lifting frame, the driving end of the driving piece is in driving connection with the screw rod, the guide part is mounted on the lifting frame, the nut seat is in sliding fit with the guide part, and the guide part is used for guiding the nut seat to move along the axial direction of the screw rod.

10. The building site rainwater collection device of claim 1, wherein the delivery port links up there is the cistern, the cistern is used for keeping in the rainwater after filtering, be provided with the second overflow pipeline in the cistern, the second overflow pipeline set up in the upside in the cistern.