CN111424777B

CN111424777B - Urban road surface rainwater collecting system

Info

Publication number: CN111424777B
Application number: CN202010188619.5A
Authority: CN
Inventors: 游桂林; 夏善轩
Original assignee: Anqing Renchuang Juyuan Ecological Environmental Protection Technology Co ltd
Current assignee: Anqing Public Engineering Co
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2021-01-05
Anticipated expiration: 2040-03-17
Also published as: CN111424777A

Abstract

The invention belongs to the technical field of rainwater treatment, and particularly relates to an urban road surface rainwater collection system which comprises a collection tank, a silt tank, a rough filtering tank, an impurity tank, a fine filtering tank and a water storage tank; the collecting tank is positioned below the ground, and a grid plate is arranged at the top of the collecting tank; a first filter screen is arranged at the upper part of the collecting tank; the silt pool is positioned on the right side of the collecting pool and is communicated with the collecting pool; the rough filtering tank is positioned at the left lower part of the collecting tank and communicated with the collecting tank; a second filter screen is arranged in the coarse filter tank; a square mounting pool is mounted on the side wall of the coarse filtration pool; the fine filter tank is positioned at the left lower part of the rough filter tank and communicated with the rough filter tank; a third filter screen and a fourth filter screen are arranged in the fine filter; the water storage tank is positioned at the left lower part of the fine filter tank and communicated with the fine filter tank; the invention can separate the initial rainwater, reduce the treatment cost; external power is not needed in the collection process, so that the operation cost is reduced; realize the automatic clearance of impurity, avoid blockking up the filter screen, influence treatment effeciency.

Description

Urban road surface rainwater collecting system

Technical Field

The invention belongs to the technical field of rainwater treatment, and particularly relates to an urban road surface rainwater collection system.

Background

Water resources are very important and special natural resources, and are basic substances for human survival and restriction factors for human sustainable development. As the world's population expands, the problem of water shortage has become a threat to the world. China belongs to a developing country with poor water resources, and the water quantity occupied by people is 2400-. Rainwater is the most fundamental, direct and economic water resource, and the utilization of rainwater becomes an important way for solving the water resource in the 21 st century. The urban rainwater collection and utilization is to collect rainwater, and the rainwater is properly treated to be used as reclaimed water to supplement a water source or recharge underground water, so that the purposes of opening sources, throttling and relieving urban water resource shortage are achieved.

Also appeared the scheme of some urban road surface rainwater collection system among the prior art, collect, handle the rainwater in the chinese patent that application number is CN201610072513.2, supply with water equipment and use in depositing in the retaining tower at last, collect the in-process of rainwater at this scheme, mud, the impurity in the rainwater rely on sludge impoundment and filter screen to get rid of, but in use appear silt easily and pile up too much and lead to the problem that can't collect the rainwater. Therefore, need a rainwater collecting system, can be collecting the rainwater in-process and from going to remove the too much silt of deposit, prevent that silt from piling up and influencing the rainwater and collect, can also clear up sedimentary impurity on the filter screen automatically simultaneously, reinforcing filter screen filtration throughput.

Disclosure of Invention

In order to make up the defects of the prior art, the invention provides an urban road surface rainwater collecting system.

The technical scheme adopted by the invention for solving the technical problems is as follows: the urban road surface rainwater collection system comprises a collection pool, a silt pool, a rough filtering pool, an impurity pool, a fine filtering pool and a water storage pool; the collecting tank is positioned below the ground; a grid plate is arranged at the top of the collecting tank; the upper surface of the grid plate is flush with the ground; a first filter screen is arranged at the upper part of the collecting tank; the silt pool is positioned on the right side of the collecting pool; the depth of the silt pool is less than that of the collecting pool; the silt pool is communicated with the collecting pool; the surface of the bottom of the collecting tank, which is connected with the bottom of the sediment tank, is inclined; the coarse filtration tank is positioned at the left lower part of the collection tank; the highest position of the coarse filter tank does not exceed the bottom of the collecting tank; the coarse filtration tank is communicated with the collection tank through a second pipeline; the second pipeline is communicated with an opening in the collecting tank and is positioned below the first filter screen; the coarse filter tank is cylindrical; a second filter screen is arranged in the coarse filter tank; a circular hole is formed in the position, above the second filter screen, of the side wall of the coarse filter tank; a square mounting pool is mounted on the side wall of the coarse filtration pool; the square mounting tank covers the round hole on the side wall of the coarse filter tank; the square mounting pool is communicated with the impurity pool; the fine filter tank is positioned at the left lower part of the coarse filter tank; the coarse filter tank and the fine filter tank are communicated through a pipeline IV; a third filter screen and a fourth filter screen are arranged in the fine filter; the filter screen III is positioned above the filter screen IV; the water storage tank is positioned at the left lower part of the fine filter; the fine filter tank is communicated with the water storage tank through a fifth pipeline; a sixth pipeline and a seventh pipeline are connected to the water storage tank; the seventh pipeline is connected with external water equipment; the sixth pipeline is connected with a municipal water supply pipe network; when the rainwater collecting device works, rainwater falls into the collecting pool through the uppermost grid plate, large-volume sundries carried by the rainwater are separated through the grid plate, the sundries are prevented from entering the collecting pool, the rainwater is filtered by the first filter screen after entering the collecting pool, smaller gravel, branches, leaves and the like which can pass through the grid plate and are carried by the rainwater are intercepted by the first filter screen, meanwhile, the initial rainwater falls into the collecting pool, the inclined bottom of the collecting pool is arranged, so that the initial rainwater is accumulated in the collecting pool, the initial rainwater is intercepted and separated, the initial rainwater is prevented from entering a subsequent treatment process, after the inclined part at the bottom of the collecting pool is filled with the rainwater, the rainwater can just pass through the second pipeline, the rainwater enters the collecting pool through the second pipeline, two pairs of rainwater are subjected to rough filtration through the first filter screen arranged in the rough filtration pool, large-particle impurities in the rainwater are removed, and the primarily treated rainwater is obtained, then, rainwater enters the fine filter tank through a pipeline IV, after being purified by a filter screen III and a filter screen IV in the fine filter tank, the rainwater enters the water storage tank through a pipeline V for storage, and the purified rainwater stored in the water storage tank is conveyed to external water utilization equipment through a pipeline VII for use by the external equipment; simultaneously, when external equipment use amount is less or the water storage is too much in the tank, send into municipal water supply network through six rainwater that will purify of pipeline, distribute and call, improve the rainwater and collect the scope of using, can in time discharge the rainwater after purifying in the tank simultaneously, prevent to influence the collection of rainwater and handle.

Preferably, the silt pool comprises a movable plate, a mounting shaft and a balancing weight; the movable plate is arranged on the side wall of the silt pool through a mounting shaft; the movable plate can rotate around the mounting shaft towards the direction of the silt pool; the movable plate is positioned at the joint of the silt pool and the collecting pool; the contact position of the movable plate and the bottom surface of the collecting tank is an inclined plane; the balancing weight is arranged on the movable plate; the balancing weight is positioned in the silt pool; a third pipeline is arranged on the side surface of the silt pool far away from the collecting pool; the third pipeline is connected to a greening pouring device; when the automatic sand-mud pouring device works, in order to prevent silt from accumulating in the collecting tank, when the weight of the silt in the collecting tank exceeds the weight of the balancing weight after accumulating to a certain degree, the movable plate rotates towards the direction of the silt pool under the extrusion of the silt so as to directly communicate the silt pool and the collecting tank, the silt deposited in the collecting tank is flushed into the silt pool along with water flow, after the silt deposited in the collecting tank is emptied, the movable plate returns to the original position under the action of the balancing weight to block the communication between the silt pool and the collecting tank, prevent the collected rainwater from entering the silt pool from the joint between the silt pool and the collecting tank until the weight of the silt deposited in the next collecting tank exceeds the weight of the balancing weight, simultaneously, the silt discharged into the silt pool flows into the third pipeline along with the entering rainwater, enters the greening pouring device through the third pipeline, and discharges the silt back to the greening belt while pouring, the water and soil loss caused by rain wash is avoided.

Preferably, a first pipeline is connected to the side wall of the collecting tank; the first pipeline is communicated to the top of the silt pool (); the first pipeline is positioned below the first filter screen; the side wall of the collecting tank is fixedly connected with a mounting frame; the side surface of the mounting frame is grooved; an opening of the first pipeline on the side wall of the collecting tank is positioned in the mounting frame; a square baffle is slidably arranged in a gap between the mounting frame and the collecting tank; a floating ball is arranged at the bottom of the square baffle; the floating ball is arranged on the square baffle through a connecting rod vertical to the surface of the square baffle; the connecting rod penetrates through a groove on the mounting frame; the buoyancy generated by the floating ball in the water can drive the floating ball and the square baffle to slide upwards; when the rainwater collecting device works, in order to avoid impurities such as sludge and the like with small volume carried in rainwater from entering a treatment step, the treatment speed is improved, after the rainwater passes through a first filter screen in a collecting tank and falls to the bottom of the collecting tank, the impurities such as the sludge and the like carried in the rainwater slide to the bottom of the collecting tank through the obliquely arranged bottom surface and are deposited at the joint of the collecting tank and a silt tank, the rainwater enters the silt tank after the weight of deposited silt reaches a certain degree, meanwhile, when the rainwater is too large and the collecting tank is full of the rainwater, a floating ball arranged on a square baffle plate can float upwards under the action of buoyancy, so that the first communicating pipeline is communicated, the rainwater which is not treated in future is discharged into the silt tank along the pipeline to prevent water from accumulating on the ground, the redundant rainwater discharged into the silt tank washes away the silt remained in the silt tank, the accumulation of the silt in the silt tank is avoided, the use is not influenced, and meanwhile, the automatic operation can, the cost of using the electric switch is reduced.

Preferably, a cross mounting frame is installed in the coarse filtering tank; the second filter screen is arranged on the cross-shaped installation; a rotating shaft is rotatably arranged on the cross-shaped mounting rack; the top end of the rotating shaft is positioned above the second filter screen; the top of the rotating shaft is provided with a conical body; the tip of the conical body is opposite to the outlet of the pipeline II above the coarse filter tank; a cross shifting plate is fixedly arranged on the rotating shaft; the cross shifting plate is positioned between the conical body and the second filter screen; the cross shifting plate is provided with a hairbrush, and the hairbrush is in contact with the surface of the filter screen II; an impeller is arranged below the rotating shaft; a water guide plate is arranged in the coarse filtering tank; the section of the water guide plate is trapezoidal; the impeller is positioned below the water guide plate; when the automatic cleaning device works, in order to avoid impurities from being accumulated on the filter screen to block the filter holes, and meanwhile, the automatic cleaning is realized, and after rainwater enters the coarse filter tank through the second pipeline, the rainwater falls onto the second filter screen; later the rainwater passes through filter screen two, and be installed in the guide of the water guide board of filter screen two below, rainwater impact impeller after the guide of water guide board, it rotates to drive the impeller, finally drive and install the cross in the pivot and dial the board and rotate, make the impurity that filters to leave on the filter screen two dial the board by the cross and dial the board and stir, discharge through the round hole on the coarse strainer lateral wall, avoid impurity to pile up, thereby improve the filter speed of filter screen two, install simultaneously that the cross dials the brush on the board and can alleviate the cross and dial the damage of board to filter screen two when clear impurity, improve filter screen life, and use cost is reduced.

Preferably, a flexible rope is fixedly connected in the square mounting pool; the tail end of the flexible rope is fixedly connected with a hemispherical stop block; the spherical surface of the hemispherical stop block is tightly attached to a round hole formed in the side wall of the coarse filtration tank under the action of gravity; the top point on the spherical surface of the hemispherical stop block exceeds the inner side wall of the coarse filter tank; an inclination angle exists at a connecting section between the impurity pool and the square mounting pool; when the device works, in order to prevent rainwater from flowing out along with impurities when the impurities accumulated on the second filter screen are discharged from the coarse filter tank, the treatment efficiency is reduced, the round hole on the side wall of the coarse filter tank is blocked by the hemispherical stop block, meanwhile, as the hemispherical stop block is installed by the flexible rope, when the cross shifting plate in the coarse filter tank rotates to the position of the round hole on the side wall of the coarse filter tank, the hemispherical stop block is pushed outwards to open the round hole on the side wall of the coarse filter tank, so that the impurities can be discharged from the round hole on the side wall of the coarse filter tank, and after the cross shifting plate rotates away, the hemispherical stop block is extruded inwards under the action of gravity to block the round hole on the side wall of the coarse filter tank again, so as to prevent the rainwater to be treated from flowing out from the round hole on the side wall of the coarse filter tank, meanwhile, the automatic opening and closing of the, potential safety hazards caused by the use of the electric switch in a humid environment are avoided; the inclination of the connection section between impurity pond and the square installation pond can make the impurity discharged through the round hole on the coarse filtration pond lateral wall slide to the impurity pond easily, prevents that the discharged impurity from piling up at the connection section between impurity pond and the square installation pond, influences impurity discharge effect.

Preferably, the diameter of the filtering holes on the second filter screen is smaller than that of the filtering holes on the first filter screen; the diameter of the filtering holes on the filter screen III is smaller than that of the filtering holes on the filter screen II; the diameter of the filtering holes on the filter screen IV is smaller than that of the filtering holes on the filter screen III; polyurethane filler used as a carrier of the treating agent is placed between the third filter screen and the fourth filter screen; when the rainwater treatment device works, in order to improve the rainwater treatment effect and speed, the diameters of filtering holes on the first filtering net, the second filtering net, the third filtering net and the fourth filtering net are sequentially reduced, rainwater is subjected to multistage treatment, the treatment effect is improved, meanwhile, the rainwater is pretreated through the large aperture of the front filtering net, impurities far exceeding the treatment capacity of the rear filtering net are intercepted, the rear filtering net is convenient to treat, the treatment speed and efficiency are improved, the filtering net is prevented from being blocked in the treatment process, and the treatment efficiency is reduced; the treatment agent in the polyurethane filler is purposefully replaced aiming at different impurities in rainwater, so that a better treatment effect is obtained, the difference of rainwater among different regions can be adapted, the use range is expanded, and the adaptability is improved.

Preferably, the inner wall of the collecting tank is provided with a mounting block; the first filter screen is arranged on the mounting block; an inclination angle exists between the first filter screen and the horizontal direction; a square hole is formed in the first filter screen; the square baffle is inserted into the square hole, and the top of the square baffle is flush with the upper surface of the filter screen; during operation, in order to improve the filtering effect of the first filter screen, impurities in rainwater are gathered to one side, the first filter screen is installed in a tilted mode, when rainwater passes through, the impurities carried in the rainwater slide downwards along the inclined direction of the first filter screen and are accumulated on the lower portion of the first filter screen, the first filter screen is prevented from being blocked by the impurities, the processing efficiency of the first filter screen is reduced, meanwhile, the impurities accumulated together are convenient to clean, and the workload of workers is reduced.

The invention has the following beneficial effects:

1. according to the urban road surface rainwater collection system, the collection pool, the square baffle, the floating and silt pool and the movable plate are arranged, rainwater with high pollution degree collected in the initial stage can be separated, the treatment difficulty and the treatment cost are reduced, silt accumulated at the bottom of the collection pool can be automatically discharged into the silt pool, the rainwater collection is prevented from being influenced by the accumulation of the silt, when the rainwater collection speed exceeds the treatment capacity, redundant rainwater is discharged into the silt pool, and the silt in the silt pool is flushed away while the rainwater is discharged.

2. According to the urban road surface rainwater collection system, the rotating shaft, the cross shifting plate, the impeller and the hemispherical stop block are arranged, so that impurities accumulated on the second filter screen are automatically cleaned in the treatment process, and the influence on the speed and efficiency of rainwater treatment due to blockage of the filter screen by the impurities is avoided.

3. According to the urban road surface rainwater collection system, extra external power input is not needed in the rainwater collection and treatment process, so that the energy consumption is reduced, and the operation cost of the rainwater collection system is reduced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the present invention at A;

FIG. 3 is an enlarged view of a portion of the invention at B;

in the figure: the device comprises a ground 1, a grid plate 11, a collecting tank 2, a first filter screen 21, an installation block 22, an installation frame 23, a square baffle 24, a floating ball 241, a first pipeline 25, a second pipeline 26, a silt tank 3, a third pipeline 31, a movable plate 32, an installation shaft 321, a balancing weight 33, a rough filtering tank 4, a rotating shaft 41, a conical body 42, a cross shifting plate 43, a second filter screen 44, a cross installation frame 45, an impeller 46, a water guide plate 47, a fourth pipeline 48, an impurity tank 5, a square installation tank 51, a flexible rope 52, a hemispherical stop 53, a third filter screen 61, a fourth filter screen 62, a fifth pipeline 63, a water storage tank 7, a sixth pipeline 71 and a seventh pipeline 72.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 3, the urban road surface rainwater collection system of the present invention comprises a collection tank 2, a silt tank 3, a coarse filtration tank 4, an impurity tank 5, a fine filtration tank and a water storage tank 7; the collecting tank 2 is positioned below the ground 1; a grid plate 11 is arranged at the top of the collecting tank 2; the upper surface of the grid plate 11 is flush with the ground 1; a first filter screen 21 is arranged at the upper part of the collecting tank 2; the silt pool 3 is positioned on the right side of the collecting pool 2; the depth of the silt pool 3 is less than that of the collecting pool 2; the silt pool 3 is communicated with the collecting pool 2; the surface of the bottom of the collecting tank 2 connected with the bottom of the sediment tank 3 is inclined; the coarse filtration tank 4 is positioned at the left lower part of the collection tank 2; the highest position of the coarse filter tank 4 does not exceed the bottom of the collecting tank 2; the coarse filtration tank 4 is communicated with the collection tank 2 through a second pipeline 26; the second pipeline 26 is communicated with an opening on the collecting tank 2 and is positioned below the first filter screen 21; the coarse filter tank 4 is cylindrical; a second filter screen 44 is arranged in the coarse filter tank 4; a circular hole is formed in the position, above the second filter screen 44, of the side wall of the coarse filter tank 4; a square mounting pool 51 is arranged on the side wall of the coarse filter pool 4; the square mounting tank 51 covers the round hole on the side wall of the coarse filtration tank 4; the square mounting pool 51 is communicated with the impurity pool 5; the fine filter tank is positioned at the left lower part of the rough filter tank 4; the coarse filter tank 4 is communicated with the fine filter tank through a pipeline IV 48; a third filter screen 61 and a fourth filter screen 62 are arranged in the fine filter; the third filter screen 61 is positioned above the fourth filter screen 62; the water storage tank 7 is positioned at the lower left of the fine filter; the fine filter tank is communicated with the water storage tank 7 through a fifth pipeline 63; a sixth pipeline 71 and a seventh pipeline 72 are connected to the water storage tank; the seventh pipeline 72 is connected with external water equipment; the six pipelines 71 are connected with a municipal water supply network; when the rainwater collecting device works, rainwater falls into the collecting pool 2 through the uppermost grid plate 11, impurities with larger volume carried by the rainwater are separated through the grid plate 11, the impurities are prevented from entering the collecting pool 2, the rainwater is filtered by the first filter screen 21 after entering the collecting pool 2, smaller impurities carried by the rainwater can be intercepted by the first filter screen 21 through small stones, branches, leaves and the like of the grid plate 11, meanwhile, the initial rainwater falls into the collecting pool 2, the inclined bottom of the collecting pool 2 is arranged, so that the initial rainwater is accumulated in the collecting pool 2, the initial rainwater is intercepted and separated, the initial rainwater is prevented from entering a subsequent treatment process, after the inclined part at the bottom of the collecting pool 2 is filled with the rainwater, the rainwater can just pass through the second pipeline 26, the rainwater enters the rough filtering pool 4 through the second pipeline 26, the rainwater is roughly filtered through the second filter screen 44 arranged in the rough filtering pool 4, and large particles in the rainwater are removed, obtaining primarily treated rainwater, then, enabling the rainwater to enter a fine filter tank through a pipeline four 48, after being purified by a filter screen three 61 and a filter screen four 62 in the fine filter tank, enabling the rainwater to enter a water storage tank 7 through a pipeline five 63 for storage, and transporting the purified rainwater stored in the water storage tank to external water utilization equipment through a pipeline seven 72 for use by the external equipment; simultaneously, when external equipment use amount is less or the water storage is too much in the tank 7, the rainwater that will purify through six 71 pipelines is sent into municipal water supply pipe network, distributes and calls, improves the scope that the rainwater was collected and is used, can in time discharge the rainwater after purifying in the tank 7 simultaneously, prevents to influence the collection of rainwater and handles.

As an embodiment of the present invention, the silt basin 3 includes a movable plate 32, a mounting shaft 321 and a counterweight 33; the movable plate 32 is mounted on the side wall of the silt pool 3 through a mounting shaft 321; the movable plate 32 can rotate around the mounting shaft 321 towards the direction of the sediment pool 3; the movable plate 32 is positioned at the joint of the silt pool 3 and the collecting pool 2; the contact position of the movable plate 32 and the bottom surface of the collecting tank 2 is an inclined plane; the counterweight 33 is mounted on the movable plate 32; the balancing weight 33 is positioned in the silt pool; a third pipeline 31 is arranged on the side surface of the silt pool 3 far away from the collecting pool 2; the third pipeline 31 is connected to a greening pouring device; in operation, in order to prevent silt from accumulating in the collecting tank 2, when silt in the collecting tank 2 accumulates to a certain extent and the weight of the silt itself exceeds the weight of the counterweight 33, the movable plate 32 rotates in the direction of the silt tank 3 under the extrusion of the silt, so as to directly communicate the silt tank 3 with the collecting tank 2, so that the silt deposited in the collecting tank 2 is flushed into the silt tank along with the water flow, after the silt deposited in the collecting tank 2 is emptied, the movable plate 32 returns to the original position under the action of the counterweight 33, and the communication between the silt tank 3 and the collecting tank 2 is blocked, so that the collected rainwater is prevented from entering the silt tank from the connection between the two, until the weight of the silt deposited in the collecting tank 2 next time exceeds the weight of the counterweight 33, and meanwhile, the silt discharged into the silt tank 3 flows into the pipeline III 31 along with the entering rainwater, and enters the greening pouring device through the pipeline III 31, when the irrigation is carried out, silt is drained back to the green belt, and water and soil loss caused by rain wash is avoided.

As an embodiment of the invention, a first pipeline 25 is connected to the side wall of the collecting tank 2; the first pipeline 25 is communicated to the top of the silt pool (3); the first pipeline 25 is positioned below the first filter screen 21; the side wall of the collecting tank 2 is fixedly connected with a mounting frame 23; the side surface of the mounting frame 23 is grooved; the opening of the first pipeline 25 on the side wall of the collecting tank 2 is positioned inside the mounting frame 23; a square baffle plate 24 is slidably arranged in a gap between the mounting frame 23 and the collecting tank 2; a floating ball 241 is arranged at the bottom of the square baffle 24; the floating ball 241 is mounted on the square baffle 24 through a connecting rod perpendicular to the square baffle 24; the connecting rod passes through a groove on the mounting frame 23; the buoyancy generated by the floating ball 241 in the water can drive the floating ball and the square baffle 24 to slide upwards; in operation, in order to avoid impurities such as sludge with small volume carried in rainwater from entering the treatment step, the treatment speed is increased, the rainwater passes through the filter screen I21 in the collecting tank 2 and falls to the bottom of the collecting tank 2, the impurities such as sludge carried in rainwater slide to the bottom of the collecting tank 2 through the obliquely arranged bottom surface and are deposited at the joint of the collecting tank 2 and the silt tank 3, the rainwater enters the silt tank 3 after the deposited silt reaches a certain degree, meanwhile, when the rainwater is too heavy and the collecting tank 2 is full of rainwater, the floating ball 241 arranged on the square baffle plate 24 can float upwards under the action of buoyancy, so as to communicate with the pipeline I25, the rainwater which is not treated in future is discharged into the silt tank 3 along the pipeline I25, the water accumulation on the ground 1 is prevented, the residual silt in the silt tank 3 is washed away by the redundant rainwater discharged into the silt tank 3, and the accumulation of the residual silt in the silt tank 3 is avoided, influence is used, simultaneously, can realize automatic operation through setting up floater 241, reduces the cost that uses electric switch to produce.

As an embodiment of the present invention, a cross mounting frame 45 is installed in the coarse filtering tank 4; the second filter screen 44 is arranged on the cross; the cross mounting bracket 45 is rotatably provided with a rotating shaft 41; the top end of the rotating shaft 41 is positioned above the second filter screen 44; the top of the rotating shaft 41 is provided with a conical body 42; the tip of the conical body 42 is opposite to the outlet of the second pipeline 26 and is positioned above the coarse filter tank 4; a cross shifting plate 43 is fixedly arranged on the rotating shaft 41; the cross shifting plate 43 is positioned between the conical body 42 and the second filter screen 44; a brush is arranged on the cross shifting plate 43 and is in contact with the surface of the second filter screen 44; an impeller 46 is arranged below the rotating shaft 41; a water guide plate 47 is arranged in the coarse filter tank 4; the section of the water guide plate 47 is trapezoidal; the impeller 46 is positioned below the water guide plate 47; during operation, in order to avoid impurities from being accumulated on the filter screen to block the filter holes and realize automatic cleaning, after rainwater enters the coarse filter tank 4 through the second pipeline 26, the rainwater falls onto the second filter screen 44; later the rainwater passes through filter screen two 44, and be installed in the guide of the water deflector 47 of filter screen two 44 below, rainwater impact impeller 46 after the guide of water deflector 47, it rotates to drive impeller 46, finally, it dials board 43 and rotates to drive the cross of installing on pivot 41, make the impurity that filters to leave on filter screen two 44 dial the board 43 by the cross and stir, discharge through the round hole on the 4 lateral walls of coarse filter tank, avoid impurity to pile up, thereby improve the filter speed of filter screen two 44, install the brush that the board 43 was dialled to the cross simultaneously and can alleviate the cross and dial the damage of board 43 to filter screen two 44 when clear impurity, improve filter screen life, and use cost is reduced.

As an embodiment of the present invention, a flexible rope 52 is fixedly connected inside the square mounting pool 51; the tail end of the flexible rope 52 is fixedly connected with a hemispherical stop block 53; the spherical surface of the hemispherical stop block 53 is tightly attached to a round hole formed in the side wall of the coarse filtration tank 4 under the action of gravity; the top point on the spherical surface of the hemispherical stop block 53 exceeds the inner side wall of the coarse filter tank 4; the connecting section between the impurity pool 5 and the square mounting pool 51 has an inclination angle; in operation, in order to prevent impurities accumulated on the second filter screen 44 from flowing out along with the impurities in the coarse filter tank 4, and reduce the treatment efficiency, the round hole on the side wall of the coarse filter tank 4 is blocked by the hemispherical stopper 53, meanwhile, because the hemispherical stopper 53 is installed by the flexible rope 52, when the cross dial plate 43 in the coarse filter tank 4 rotates to the round hole position on the side wall of the coarse filter tank 4, the hemispherical stopper 53 is pushed outwards to open the round hole on the side wall of the coarse filter tank 4, so that the impurities can be discharged from the round hole on the side wall of the coarse filter tank 4, when the cross dial plate 43 rotates away, the hemispherical stopper 53 is pressed inwards under the action of gravity to block the round hole on the side wall of the coarse filter tank 4 again, so as to prevent the rainwater to be treated from flowing out from the round hole on the side wall of the coarse filter tank 4, and meanwhile, by arranging the hemispherical stopper 53, the automatic opening, the cost increase caused by using the electric switch is avoided, and the potential safety hazard caused by using the electric switch in a humid environment is avoided; the inclination of the connection section between impurity pond 5 and square installation pond 51, the easy landing of impurity through the round hole exhaust on the coarse filter tank 4 lateral wall that can make is to impurity pond 5 in, prevents that the discharged impurity from piling up at the connection section between impurity pond 5 and square installation pond 51, influences impurity discharge effect.

In one embodiment of the present invention, the diameter of the filtering holes on the second filter screen 44 is smaller than the diameter of the filtering holes on the first filter screen 21; the diameter of the filtering holes on the third filter screen 61 is smaller than that of the filtering holes on the second filter screen 44; the diameter of the filtering holes on the filter screen four 62 is smaller than that of the filtering holes on the filter screen three 61; polyurethane filler used as a carrier of the treating agent is placed between the third filter screen 61 and the fourth filter screen 62; when the rainwater treatment device works, in order to improve the rainwater treatment effect and speed, the diameters of filtering holes on the first filter screen 21, the second filter screen 44, the third filter screen 61 and the fourth filter screen 62 are sequentially reduced, rainwater is subjected to multi-stage treatment, the treatment effect is improved, meanwhile, rainwater is pretreated through the large aperture of the front filter screen, impurities far exceeding the treatment capacity of the rear filter screen are intercepted, the rear filter screen is conveniently treated, the treatment speed and efficiency are improved, the filter screen is prevented from being blocked in the treatment process, and the treatment efficiency is reduced; the treatment agent in the polyurethane filler is purposefully replaced aiming at different impurities in rainwater, so that a better treatment effect is obtained, the difference of rainwater among different regions can be adapted, the use range is expanded, and the adaptability is improved.

As an embodiment of the present invention, the inner wall of the collecting tank 2 is provided with a mounting block 22; the first filter screen 21 is arranged on the mounting block 22; an inclination angle is formed between the first filter screen 21 and the horizontal direction; a square hole is formed in the first filter screen 21; the square baffle 24 is inserted into the square hole, and the top of the square baffle 24 is flush with the upper surface of the first filter screen 21; during operation, in order to improve the filter effect of filter screen one 21, make the impurity of rainwater gather to one side, filter screen one 21 slope installation, when the rainwater passes through, the impurity that carries in the rainwater is followed filter screen one 21's slope direction and is fallen downwards, piles up in the lower part of filter screen one 21, prevents that impurity from blockking up filter screen one 21, reduces filter screen one 21's treatment effeciency, and the impurity of piling up together simultaneously is convenient for clear up, reduces workman's work load.

The specific working process is as follows:

during operation, rainwater falls into the collecting tank 2 through the uppermost grid plate 11, the grid plate 11 separates impurities with large volume carried by the rainwater, the first filter screen 21 further filters the rainwater, the inclined bottom surface arranged in the collecting tank 2 collects the rainwater at the early stage of rain, the rainwater enters the rough filter tank 4 through the pipeline two 26 after the inclined bottom of the collecting tank 2 is fully filled with the rainwater, the rainwater is roughly filtered by the filter screen two 44 in the rough filter tank 4 and then enters the fine filter tank, and the rainwater enters the water storage tank 7 through the pipeline five 63 after being purified by the filter screen three 61 and the filter screen four 62 in the fine filter tank; rainwater falls to the bottom of the collecting pool 2 through the filter screen I21 in the collecting pool 2, impurities such as sludge carried in the rainwater slide to the joint of the collecting pool 2 and the silt pool 3 through the obliquely arranged bottom surface, the sludge and the like carried in the rainwater are collected, when silt is deposited to a certain degree, the movable plate 32 is opened, the silt deposited in the collecting pool 2 is discharged into the silt pool 3, then the silt enters a greening pouring device along the pipeline III 31, when the rainwater is too large and fills the collecting pool 2, the floating ball 241 arranged on the square baffle plate 24 can float upwards under the action of buoyancy, so that the pipeline I25 is communicated, and the rainwater which is not treated is discharged into the silt pool 3; rainwater enters the coarse filter tank 4 and falls onto the second filter screen 44, then the rainwater passes through the second filter screen 44, is guided by the water guide plate 47 and impacts the impeller 46 to drive the impeller 46 to rotate, and finally drives the cross shifting plate 43 arranged on the rotating shaft 41 to rotate, so that impurities left on the second filter screen 44 after being filtered are shifted by the cross shifting plate 43 and are discharged through a round hole in the side wall of the coarse filter tank 4; the hemisphere block 53 blocks the round hole on the side wall of the coarse filter tank 4, when the cross shifting plate 43 in the coarse filter tank 4 rotates to the round hole position on the side wall of the coarse filter tank 4, the hemisphere block 53 is pushed outwards to open the round hole on the side wall of the coarse filter tank 4, so that impurities can be discharged from the round hole on the side wall of the coarse filter tank 4, after the cross shifting plate 43 rotates and leaves, the hemisphere block 53 is squeezed inwards under the action of gravity to block the round hole on the side wall of the coarse filter tank 4 again, and rainwater to be treated is prevented from flowing out of the round hole on the side wall of the coarse filter tank 4; the diameters of the filtering holes on the first filtering net 21, the second filtering net 44, the third filtering net 61 and the fourth filtering net 62 are sequentially reduced, the rainwater is subjected to multi-stage treatment, meanwhile, the rainwater is pretreated through the large hole diameter of the front filtering net, impurities far exceeding the treatment capacity of the rear filtering net are intercepted, and the rear filtering net is convenient to treat; aiming at different impurities in the rainwater, the treating agent in the polyurethane filler is replaced in a targeted manner; purified rainwater stored in the water storage tank is conveyed to external water utilization equipment through a pipeline seven 72 for use by the external equipment; when the usage amount of external equipment is small or the water stored in the water storage tank 7 is excessive, purified rainwater is sent into a municipal water supply network through a pipeline six 71 for distribution and calling; the filter screen I21 is installed in an inclined mode, and when rainwater passes through, impurities carried in the rainwater slide downwards along the inclined direction of the filter screen I21 and are accumulated on the lower portion of the filter screen I21.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an urban road surface rainwater collecting system, includes collecting pit (2), silt pond (3), coarse filter (4), impurity pond (5), essence filter (6) and tank (7), its characterized in that: the collecting tank (2) is positioned below the ground (1); a grid plate (11) is arranged at the top of the collecting tank (2); the upper surface of the grid plate (11) is flush with the ground (1); a first filter screen (21) is arranged at the upper part of the collecting tank (2); the silt pool (3) is positioned on the right side of the collecting pool (2); the depth of the silt pool (3) is less than that of the collecting pool (2); the silt pool (3) is communicated with the collecting pool (2); the surface of the bottom of the collecting tank (2) connected with the bottom of the silt pool (3) is inclined; the coarse filtration tank (4) is positioned at the lower left of the collection tank (2); the highest position of the coarse filter tank (4) does not exceed the bottom of the collecting tank (2); the coarse filtration tank (4) is communicated with the collection tank (2) through a second pipeline (26); the second pipeline (26) is communicated with an opening on the collecting tank (2) and is positioned below the first filter screen (21); the coarse filter tank (4) is cylindrical; a second filter screen (44) is arranged in the coarse filter tank (4); a round hole is formed in the position, above the second filter screen (44), of the side wall of the coarse filter tank (4); a square mounting pool (51) is mounted on the side wall of the coarse filter pool (4); the square mounting pool (51) covers the round hole on the side wall of the coarse filtering pool (4); the square mounting pool (51) is communicated with the impurity pool (5); the fine filter tank (6) is positioned at the left lower part of the rough filter tank (4); the coarse filter tank (4) is communicated with the fine filter tank (6) through a pipeline IV (48); a third filter screen (61) and a fourth filter screen (62) are arranged in the fine filter (6); the filter screen III (61) is positioned above the filter screen IV (62); the water storage tank (7) is positioned at the lower left of the fine filter tank (6); the fine filter (6) is communicated with the water storage tank (7) through a fifth pipeline (63); a sixth pipeline (71) and a seventh pipeline (72) are connected to the water storage tank; the seventh pipeline (72) is connected with external water equipment; the sixth pipeline (71) is connected with a municipal water supply network;

the silt pool (3) comprises a movable plate (32), a mounting shaft (321) and a balancing weight (33); the movable plate (32) is arranged on the side wall of the silt pool (3) through a mounting shaft (321); the movable plate (32) can rotate around the mounting shaft (321) towards the direction of the sediment pool (3); the movable plate (32) is positioned at the joint of the silt pool (3) and the collecting pool (2); the contact position of the movable plate (32) and the bottom surface of the collecting tank (2) is an inclined plane; the balancing weight (33) is arranged on the movable plate (32); the balancing weight (33) is positioned in the silt pool; a third pipeline (31) is arranged on the side surface of the silt pool (3) far away from the collecting pool (2); the third pipeline (31) is connected to a greening pouring device; when silt in the collecting tank (2) is accumulated to a certain degree and the weight of the silt exceeds the weight of the balancing weight (33), the movable plate (32) rotates towards the direction of the silt tank (3) under the extrusion of the silt so as to directly communicate the silt tank (3) with the collecting tank (2), so that the silt deposited in the collecting tank (2) is flushed into the silt tank along with water flow, and after the silt deposited in the collecting tank (2) is emptied, the movable plate (32) returns to the original position under the action of the balancing weight (33), the communication between the silt tank (3) and the collecting tank (2) is blocked, and collected rainwater is prevented from entering the silt tank from the joint between the silt tank and the collecting tank;

a first pipeline (25) is connected to the side wall of the collecting tank (2); the first pipeline (25) is communicated with the top of the silt pool (3); the first pipeline (25) is positioned below the first filter screen (21); the side wall of the collecting tank (2) is fixedly connected with a mounting frame (23); the side surface of the mounting frame (23) is grooved; the opening of the first pipeline (25) on the side wall of the collecting tank (2) is positioned inside the mounting frame (23); a square baffle (24) is slidably arranged in a gap between the mounting frame (23) and the collecting tank (2); a floating ball (241) is arranged at the bottom of the square baffle (24); the floating ball (241) is arranged on the square baffle (24) through a connecting rod vertical to the surface of the square baffle (24); the connecting rod passes through a groove on the mounting frame (23); the buoyancy generated by the floating ball (241) in the water can drive the floating ball and the square baffle (24) to slide upwards;

a cross mounting rack (45) is arranged in the coarse filter tank (4); the second filter screen (44) is arranged on the cross-shaped installation; a rotating shaft (41) is rotatably arranged on the cross mounting rack (45); the top end of the rotating shaft (41) is positioned above the second filter screen (44); the top of the rotating shaft (41) is provided with a conical body (42); the tip of the conical body (42) is opposite to an outlet of the second pipeline (26) which is positioned above the coarse filter tank (4); a cross shifting plate (43) is fixedly arranged on the rotating shaft (41); the cross shifting plate (43) is positioned between the conical body (42) and the second filter screen (44); a brush is arranged on the cross shifting plate (43) and is in contact with the surface of the second filter screen (44); an impeller (46) is arranged below the rotating shaft (41); a water guide plate (47) is arranged in the coarse filter tank (4); the section of the water guide plate (47) is trapezoidal; the impeller (46) is positioned below the water guide plate (47);

a flexible rope (52) is fixedly connected in the square mounting pool (51); the tail end of the flexible rope (52) is fixedly connected with a hemispherical stop block (53); the spherical surface of the hemispherical stop block (53) is tightly attached to a round hole formed in the side wall of the coarse filtration tank (4) under the action of gravity; the top point on the spherical surface of the hemispherical stop block (53) exceeds the inner side wall of the coarse filter tank (4); an inclination angle is formed at the connecting section between the impurity pool (5) and the square mounting pool (51);

the diameter of the filtering holes on the second filter screen (44) is smaller than that of the filtering holes on the first filter screen (21); the diameter of the filtering holes in the third filter screen (61) is smaller than that of the filtering holes in the second filter screen (44); the diameter of the filtering holes in the filter screen four (62) is smaller than that of the filtering holes in the filter screen three (61); polyurethane filler used as a carrier of the treating agent is placed between the filter screen three (61) and the filter screen four (62);

the inner wall of the collecting tank (2) is provided with a mounting block (22); the first filter screen (21) is arranged on the mounting block (22); an inclination angle exists between the first filter screen (21) and the horizontal direction; a square hole is formed in the first filter screen (21); the square baffle (24) is inserted into the square hole, and the top of the square baffle (24) is flush with the upper surface of the first filter screen (21);

rainwater falls into the collecting tank (2) through the uppermost grid plate (11), impurities with large volume carried by the rainwater are separated by the grid plate (11), the rainwater is further filtered by the first filter screen (21), the rainwater at the early stage of raining is collected by the inclined bottom surface arranged in the collecting tank (2), the rainwater enters the rough filter tank (4) through the second pipeline (26) after the inclined bottom of the collecting tank (2) is fully filled by the rainwater, the rainwater is roughly filtered by the second filter screen (44) in the rough filter tank (4), then enters the fine filter tank (6), is purified by the third filter screen (61) and the fourth filter screen (62) in the fine filter tank (6), and then enters the water storage tank (7) through the fifth pipeline (63) for storage; rainwater passes through a filter screen I (21) in a collecting tank (2), falls to the bottom of the collecting tank (2), impurities such as sludge carried in the rainwater slide to the joint of the collecting tank (2) and a silt tank (3) through a bottom surface which is obliquely arranged, the sludge and the like carried in the rainwater are collected, when silt is deposited to a certain degree, a movable plate (32) is opened, silt deposited in the collecting tank (2) is discharged into the silt tank (3), then the silt enters a greening pouring device along a pipeline III (31), when the rainwater is over-heavy and the collecting tank (2) is filled with the rainwater, a floating ball (241) arranged on a square baffle (24) can float upwards under the action of buoyancy, so that the pipeline I (25) is communicated, and the rainwater which is not treated in time is discharged into the silt tank (3); rainwater enters the coarse filter tank (4) and falls onto a second filter screen (44), then the rainwater passes through the second filter screen (44), is guided by the water guide plate (47) and impacts the impeller (46), drives the impeller (46) to rotate, and finally drives the cross shifting plate (43) arranged on the rotating shaft (41) to rotate, so that impurities left on the second filter screen (44) by filtration are shifted by the cross shifting plate (43) and are discharged through round holes in the side wall of the coarse filter tank (4); the semi-sphere stop block (53) blocks round holes in the side wall of the coarse filter tank (4), when the cross shifting plate (43) in the coarse filter tank (4) rotates to the round hole position in the side wall of the coarse filter tank (4), the semi-sphere stop block (53) is pushed outwards, the round holes in the side wall of the coarse filter tank (4) are opened, impurities can be discharged from the round holes in the side wall of the coarse filter tank (4), after the cross shifting plate (43) rotates away, the semi-sphere stop block (53) is squeezed inwards under the action of gravity, the round holes in the side wall of the coarse filter tank (4) are blocked again, and rainwater to be treated is prevented from flowing out from the round holes in the side wall of the coarse filter tank (4; the diameters of filtering holes in the first filter screen (21), the second filter screen (44), the third filter screen (61) and the fourth filter screen (62) are sequentially reduced, rainwater is subjected to multi-stage treatment, meanwhile, the rainwater is pretreated through the large hole diameter of the front filter screen, impurities far exceeding the treatment capacity of the rear filter screen are intercepted, and the rear filter screen is convenient to treat; aiming at different impurities in the rainwater, the treating agent in the polyurethane filler is replaced in a targeted manner; purified rainwater stored in the water storage tank is conveyed to external water utilization equipment through a pipeline seven (72) for use by the external equipment; when the usage amount of external equipment is small or the water stored in the water storage tank (7) is excessive, purified rainwater is sent into a municipal water supply network through a pipeline six (71) for distribution and calling; the filter screen I (21) is installed in an inclined mode, and when rainwater passes through, impurities carried in the rainwater slide downwards along the inclined direction of the filter screen I (21) and are accumulated on the lower portion of the filter screen I (21).