CN108678135B

CN108678135B - Sponge city rainwater recovery system

Info

Publication number: CN108678135B
Application number: CN201810554701.8A
Authority: CN
Inventors: 黎剑鸣
Original assignee: Harbin Jianyuan Municipal Engineering Planning And Design Co Ltd
Current assignee: Harbin Jianyuan municipal engineering planning and Design Co., Ltd
Priority date: 2018-06-01
Filing date: 2018-06-01
Publication date: 2020-05-05
Anticipated expiration: 2038-06-01
Also published as: CN108678135A

Abstract

The invention mainly relates to a rainwater and sludge separated rainwater recovery system, which comprises a plurality of drainage well covers, a regional water distribution box, a rainwater centralized filtering device and a rainwater chemical treatment device, wherein the drainage well covers, the regional water distribution box, the rainwater centralized filtering device and the rainwater chemical treatment device are arranged on a road.

Description

Sponge city rainwater recovery system

Technical Field

The invention relates to the field of urban construction, in particular to a sponge urban rainwater recovery system.

Background

Sponge city, as the name implies just like the city of sponge, can collect, impound and purify the rainfall rainwater in the city in rainy season, when needing the water resource, releases the water resource of having saved and utilizes. The invention mainly relates to a rainwater and sludge separated rainwater recovery system, which can realize alarm separation of rainwater and sludge, is provided with a reliable wall scraping device and a good sludge cleaning effect, and is provided with a novel self-cleaning anti-blocking drainage well cover.

Municipal drainage well lid is a kind of drainage, maintenance of equipment of installing on the town road extensively, and general municipal well lid all comprises well lid body and the wash port that link up the well lid body. Although most of the simple well covers can work normally, in some places with much dust and sewage, the drainage holes of the well covers are often dirty and blocked after being used for a long time, especially in some areas which are not careful about road cleaning and maintenance. Based on this, the inventor has developed an energy storage formula, has from municipal drainage well lid that prevents stifled function.

Disclosure of Invention

Aiming at the problems, the invention provides a sponge urban rainwater recovery system.

The purpose of the invention is realized by adopting the following technical scheme:

a sponge urban rainwater recovery system comprises a plurality of drainage well covers, regional water distribution boxes, a rainwater centralized filtering device and a rainwater chemical treatment device, wherein the drainage well covers are arranged on a road; the rainwater centralized filtering device comprises a filtering cylinder and a sludge cylinder which are detachably connected through flanges, the filtering cylinder is positioned above the sludge cylinder, a filtering net is fixedly connected to the inner wall of the filtering cylinder, a wall scraping ring plate is arranged below the filtering net and fixedly connected with a push rod through a plurality of connecting rods, and the push rod is driven by a piston in an air cylinder to do linear motion; the lower end of the filter cartridge is opened, the upper end of the sludge cylinder is opened, the bottom of the filter cartridge is provided with an electric flashboard door, the filter cartridge below the filter screen is communicated with a water inlet pipe internally provided with a water inlet valve, the top of the filter cartridge is communicated with a rainwater chemical treatment device through a water outlet pipe, the water outlet pipe is provided with a water outlet valve, the bottom of the filter cartridge is also communicated with a water discharge pipe communicated with a water storage tank, and the water discharge pipe is provided with a water discharge; a weight sensor is arranged on the sludge cylinder, at least one first pressure sensor is installed on the connecting rod, a second pressure sensor is installed above the filter screen, and a liquid level sensor is installed in the water storage tank.

Drawings

The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.

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

FIG. 2 is a cross-sectional view of a rainwater concentration filtration unit;

FIG. 3 is a schematic view of the construction of the scraper ring plate;

FIG. 4 is a front cross-sectional view of a drain cover;

FIG. 5 is an exterior isometric view of the drain cover;

FIG. 6 is an isometric view of a metal plate;

FIG. 7 is an isometric view of a sponge sheet;

FIG. 8 is an isometric view of the annular bladder and piston rod;

FIG. 9 is an isometric view of the associated components of the movable iron and magnet blocks;

FIG. 10 is a view showing the spatial shape of the cleaning hole and the drain hole;

FIG. 11 is an enlarged view of a portion of FIG. 4 at A;

fig. 12 is a partially enlarged view of a point a when the movable iron piece is attracted to the magnet piece.

Detailed Description

The invention is further described with reference to the following examples.

Please refer to fig. 1-3, which illustrates a sponge urban rainwater recycling system, comprising a plurality of drainage well lids 100 installed on roads, regional distribution boxes 101, a rainwater centralized filtering device 102 and a rainwater chemical treatment device 103, wherein rainwater enters a sewer from the drainage well lids 100 and is collected to each regional distribution box 101, rainwater in each regional distribution box 101 is supplied to the rainwater centralized filtering device 102 by a first power pump 104, and rainwater separated by the rainwater centralized filtering device 102 enters the rainwater chemical treatment device 103; the rainwater centralized filtering device 102 comprises a filter cylinder 106 and a sludge cylinder 107 which are detachably connected through a flange 105, the filter cylinder 106 is positioned above the sludge cylinder 107, a filter screen 108 is fixedly connected to the inner wall of the filter cylinder 106, a wall scraping ring plate 109 is arranged below the filter screen 108, the wall scraping ring plate 109 is fixedly connected with a push rod 111 through a plurality of connecting rods 110, and the push rod 111 is driven by a piston 113 in an air cylinder 112 to do linear motion; the lower end of the filter cylinder 106 is open, the upper end of the sludge cylinder 107 is open, the bottom of the filter cylinder 106 is provided with an electric gate plate 126, the filter cylinder 106 below the filter screen 108 is communicated with a water inlet pipe 115 in which a water inlet valve 114 is arranged, the top of the filter cylinder 106 is communicated with the rainwater chemical treatment device 103 through a water outlet pipe 116, the water outlet pipe 116 is provided with a water outlet valve 124, the bottom of the filter cylinder 106 is also communicated with a water discharge pipe 118 communicated with a water storage tank 117, and the water discharge pipe 118 is provided with a water discharge. A weight sensor is arranged on the sludge cylinder 107, at least one first pressure sensor 121 is arranged on the connecting rod 110, a second pressure sensor 122 is arranged above the filter screen 108, and a liquid level sensor is arranged in the water storage tank 117; at ordinary times, the electric gate plate door 126 is in a closed state, rainwater enters the filter cylinder 106 from the water inlet pipe 115, after being filtered by the filter screen 108, the rainwater overflows to the rainwater chemical treatment device 103 from the water outlet pipe 116, when the difference between the first pressure sensor 121 and the second pressure sensor 122 is detected to exceed a set value (at this time, it is indicated that large-particle sludge accumulated above the filter screen is much), the water inlet valve 114 and the water outlet valve 124 are closed, the water drain valve 119 is opened to drain the water stored in the filter cylinder 106, the air cylinder 112 is started to drive the wall scraping plate 109 up and down to scrape the sludge on the inner wall of the filter cylinder 106 below the filter screen 108, and then the electric gate plate door 126 is opened to place the accumulated sludge into the sludge cylinder 107 (then the original state; when the total weight detected by the weight sensor exceeds a set value (since the total volume of the filter cylinder 106 and the sludge cylinder 107 is fixed and the fluctuation of the density of rainwater itself is not large, when the weight sensor exceeds the set value, it indicates that the sludge accumulated in the sludge cylinder 107 is nearly fully loaded), a remote alarm (not shown in the figure and connected to the weight sensor) gives an alarm to a monitoring person, the monitoring person detaches the sludge cylinder 107 from the filter cylinder 106 on site to dump the sludge, and when the level sensor detects that the water level exceeds the set value, the second power pump 125 is started to supply the water in the water storage tank 117 to the rainwater chemical treatment device 103. The rainwater chemical treatment device 103 is an immersed ultraviolet sterilization bank light disinfection tank. The cylinder 112 is mounted above the filter cartridge 106, and the water inlet pipe 115 is communicated with the outlet of the first power pump 104.

As shown in fig. 4-12, the drainage manhole cover 100 includes a manhole cover body 1 and drainage holes 2 penetrating through the manhole cover body 1, a sponge plate 3 is fixedly connected to the manhole cover body 1, a plurality of spring holes 4 are formed in the sponge plate 3, first springs 5 are disposed in the spring holes 4, lower ends of the first springs 5 are fixedly connected to the surface of the manhole cover body 1, upper ends of the first springs 5 are fixedly connected to the bottom end of a metal plate 6 located on the sponge plate 3, and the sponge plate 3 and the metal plate 6 are respectively provided with a sponge plate drainage hole 7 and a metal plate drainage hole 8 which are coaxial with the drainage holes 2; the bottom surface of the well lid body 1 is fixedly connected with at least one piston cylinder 9, a piston 10 is arranged in the piston cylinder 9, and the upper end of the piston 10 is fixedly connected with the metal plate 6 through a connecting rod 11; the bottom surface of the well lid body 1 is also fixedly connected with an annular air bag 12, a central hole 13 of the annular air bag 12 is coaxial with the drain hole 2, and the piston cylinder 9 is communicated with the annular air bag 12 through an air supply pipe 14; the bottom end of the well lid body 1 is provided with an L-shaped air inlet communicated with the annular air bag 12, the inner wall of a vertical hole 15 of the L-shaped air inlet is fixedly connected with a fixed plate 16, the fixed plate 16 is provided with a plurality of air vents 17, the upper end of the fixed plate 16 is fixedly connected with a movable iron block 19 through a second spring 18, the upper end of the movable iron block 19 is fixedly connected with a movable rod 20, a magnet block 21 used for attracting the movable iron block 19 is fixedly embedded in the well lid body above the corner of the L-shaped air inlet, the movable rod 20 penetrates through the magnet block 21 and extends upwards to a containing hole 22 formed in the sponge plate 3, a horizontal hole 23 of the L-shaped air inlet is communicated with a plurality of cleaning air holes 24, and the tail ends of the; the attracting force of the movable iron block 19 and the magnet block 21 is set as follows: when the upper edge of the movable iron block 19 passes over the lower edge of the horizontal hole 23, the movable iron block 19 is attracted by the magnet block 21, and when the movable iron block 19 and the magnet block 21 are attracted together, the upper edge of the movable rod 20 just contacts the bottom end of the metal plate 6; when the metal plate 6 moves to the lowest level, the upper edge of the movable iron block 19 is not higher than the lower edge of the horizontal hole 23.

As a further preferable scheme, the metal plate 6 is provided with an outer convex edge 25, the well lid body 1 is provided with a clamping convex edge 26, and the upper surface of the outer convex edge 25 is in contact with the lower surface of the clamping convex edge 26.

As a further preferable scheme, for the manhole cover of which the upper surface is often rolled by vehicles, how to achieve the energy storage purpose of the invention on the basis of not influencing the safety of vehicle driving is very important, which requires that the maximum moving distance of the metal plate 6 must be reasonably set and cannot be too large, and under the condition that the maximum moving distance of the metal plate 6 does not exceed 10mm through repeated tests of the inventor, when vehicles of common vehicle types pass through the manhole cover, people on the vehicle basically have no fluctuation feeling and cannot influence the normal operation of the vehicle.

As a further preferred option, the central hole 13 of the annular bladder 12 has a diameter larger than the diameter of the drainage hole.

As a further preferred option, a one-way valve 27 is provided in the gas supply tube directed to the annular bladder 12, and a one-way valve 27 is provided in the horizontal bore 23 directed to the purge air hole 24.

As a further preferable scheme, a rubber air sealing ring (not shown in the figure) is fixedly connected to the circumferential side surface of the movable iron block 19.

As a further preferable mode, the uppermost cleaning air hole has an upward inclination angle to facilitate cleaning of the side walls of the sponge plate drain hole 7 and the metal plate drain hole 8.

As a further preferred scheme, when the air pressure in the annular air bag 12 is a local atmospheric pressure, the upper edge of the movable iron block 19 is at least 5mm lower than the lower edge of the horizontal hole.

As a further preferable mode, the metal plate 6 is an iron plate.

As a further preferable scheme, the diameters of the sponge plate drain hole 7 and the metal plate drain hole 8 are not smaller than the diameter of the drain hole 2.

When the manhole cover is used, if pedestrians or vehicles trample and roll the manhole cover body 1, the metal plate 6 overcomes the first spring 5 to move downwards for a small distance after being stressed (the sponge plate 3 can effectively buffer the descending energy and reduce the fluctuation of the pedestrians and the vehicles as much as possible), the metal plate 6 drives the connecting rod 11 and the piston 10 to move downwards, air is compressed into the annular air bag 12 through the one-way valve 27, the air pressure in the annular air bag 12 is increased, and the movable iron block 19 overcomes the spring force of the second spring 18 to move upwards for a small distance; when the pedestrian or the vehicle gets out above the metal plate 6, the metal plate 6 goes upward by the spring force of the first spring 5 to be restored to the original position. After a plurality of pedestrians or vehicles crush the manhole cover body 1, the movable iron block 19 is continuously pushed upwards until the upper edge of the movable iron block 19 crosses the lower edge of the horizontal hole 23 (dotted line K in fig. 11), the movable iron block 19 is attracted to the position shown in fig. 12 by the magnet block 21, and at the moment, the high-pressure air of the annular air bag 12 passes through the one-way valve 27 of the horizontal hole 23 and is sprayed to the side walls of the drain hole 2, the sponge plate drain hole 7 and the metal plate drain hole 8 through the cleaning air holes 24 to be swept and cleaned. At this time, the movable rod 20 presses against the lower end of the metal plate 6, and when a pedestrian or a vehicle passes next time, the metal plate 6 descends and pushes the movable rod 20 and the movable iron block 19 to descend, and the movable iron block 19 returns to the original position shown in fig. 4 and 11 to enter the next purging and cleaning cycle.

The invention has the beneficial effects that: 1. can realize the alarm formula autosegregation of rainwater and mud, have reliable wall scraping device simultaneously, mud clearance is effectual.

2. The energy of rolling for many times of pedestrians or vehicles is converted into the higher air pressure energy of the annular air bag 12 to be stored, when the air pressure reaches a certain value, the drain hole 2 is automatically purged irregularly, and the drain hole 2 can be effectively prevented from being blocked due to excessive dust and dirt.

3. The invention accumulates the multiple rolling energy into the air pressure energy, thus the maximum descending distance of the metal plate 6 at each time can be reduced as much as possible, the fluctuation feeling of pedestrians or vehicles is lightened, and the normal walking and driving of the pedestrians and vehicles are ensured.

4. The electromechanical devices with high price such as electromagnetic valves and air pumps are not needed, the manufacturing cost is low, the energy completely comes from the external energy, the operation cost is low, and the structural integration level is high.

5. By changing the original length of the second spring 18 and the original distance between the movable iron block 19 and the magnet block 21, the action threshold of the annular air bag 12 can be conveniently changed, so that the purging threshold can be selected according to different environments. For example, for some pedestrian and vehicle-less locations, the actuation threshold may be lowered appropriately, thereby shortening the purge cycle; in the areas with more pedestrians and vehicles, the action threshold value can be properly increased, and therefore the effect of purging each time is improved.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A sponge urban rainwater recovery system is characterized by comprising a plurality of drainage well covers, regional water distribution boxes, a rainwater centralized filtering device and a rainwater chemical treatment device, wherein the drainage well covers are arranged on a road; the rainwater centralized filtering device comprises a filtering cylinder and a sludge cylinder which are detachably connected through flanges, the filtering cylinder is positioned above the sludge cylinder, a filtering net is fixedly connected to the inner wall of the filtering cylinder, a wall scraping ring plate is arranged below the filtering net and fixedly connected with a push rod through a plurality of connecting rods, and the push rod is driven by a piston in an air cylinder to do linear motion; the lower end of the filter cartridge is opened, the upper end of the sludge cylinder is opened, the bottom of the filter cartridge is provided with an electric flashboard door, the filter cartridge below the filter screen is communicated with a water inlet pipe internally provided with a water inlet valve, the top of the filter cartridge is communicated with a rainwater chemical treatment device through a water outlet pipe, the water outlet pipe is provided with a water outlet valve, the bottom of the filter cartridge is also communicated with a water discharge pipe communicated with a water storage tank, and the water discharge pipe is provided with a water discharge; a weight sensor is arranged on the sludge cylinder, at least one first pressure sensor is installed on the connecting rod, a second pressure sensor is installed above the filter screen, and a liquid level sensor is installed in the water storage tank.

2. The sponge city rainwater recycling system according to claim 1, wherein at ordinary times, the electric shutter door is in a closed state, rainwater enters the filter cartridge from the water inlet pipe, is filtered by the filter screen and then overflows to the rainwater chemical treatment device from the water outlet pipe, when the difference between the first pressure sensor and the second pressure sensor is detected to exceed a set value, the water inlet valve and the water outlet valve are closed, the water drain valve is opened to drain the stored water in the filter cartridge, the air cylinder is started to drive the wall scraping plate to move up and down, sludge on the inner wall of the filter cartridge below the filter screen is scraped, and then the electric shutter door is opened to drain the collected sludge into the sludge cartridge; when the total weight detected by the weight sensor exceeds a set value, an alarm is sent to monitoring personnel through a remote alarm, and when the liquid level sensor detects that the water level exceeds the set value, the second power pump is started to supply water in the water storage tank to the rainwater chemical treatment device.

3. The system of claim 2, wherein the chemical rainwater treatment device is an immersed ultraviolet germicidal bank-lamp disinfection tank.

4. The sponge city rainwater recycling system of claim 3 wherein said cylinder is mounted above the cartridge filter, said water inlet pipe being in communication with the outlet of the first power pump.

5. The sponge urban rainwater recycling system according to claim 4, wherein the drainage manhole cover comprises a manhole cover body and drainage holes penetrating through the manhole cover body, a sponge plate is fixedly connected to the manhole cover body, a plurality of spring holes are formed in the sponge plate, a first spring is arranged in each spring hole, the lower end of each first spring is fixedly connected to the surface of the manhole cover body, the upper end of each first spring is fixedly connected to the bottom end of a metal plate located on the sponge plate, and the sponge plate and the metal plate are respectively provided with a sponge plate drainage hole and a metal plate drainage hole which are coaxial with the drainage holes; the bottom surface of the well lid body is fixedly connected with at least one piston cylinder, a piston is arranged in the piston cylinder, and the upper end of the piston is fixedly connected with the metal plate through a connecting rod; the bottom surface of the well lid body is also fixedly connected with an annular air bag, a central hole of the annular air bag is coaxial with the drain hole, and the piston cylinder is communicated with the annular air bag through an air supply pipe; the bottom end of the well lid body is provided with an L-shaped air inlet communicated with the annular air bag, the inner wall of a vertical hole of the L-shaped air inlet is fixedly connected with a fixed plate, the fixed plate is provided with a plurality of air vents, the upper end of the fixed plate is fixedly connected with a movable iron block through a second spring, the upper end of the movable iron block is fixedly connected with a movable rod, a magnetic stone block used for attracting the movable iron block is fixedly embedded in the well lid body above the corner of the L-shaped air inlet, the movable rod penetrates through the magnetic stone block and extends upwards to a containing hole formed in the sponge plate, a horizontal hole of the L-shaped air inlet is communicated with a plurality of cleaning air holes, and the tail; when the upper edge of the movable iron block crosses the lower edge of the horizontal hole, the movable iron block is attracted by the magnet block, and when the movable iron block and the magnet block are attracted together, the upper edge of the movable rod just contacts the bottom end of the metal plate; when the metal plate moves to the lowest level, the upper edge of the movable iron block is not higher than the lower edge of the horizontal hole.

6. The sponge urban rainwater recycling system according to claim 5, wherein the metal plate has an outer convex edge, the manhole cover body has a clamping convex edge, and the upper surface of the outer convex edge is in contact with the lower surface of the clamping convex edge.

7. The urban sponge rainwater recycling system according to claim 6, wherein the maximum moving distance of the metal plate is not more than 10mm, and the diameter of the central hole of the annular air bag is larger than that of the drainage hole.

8. The system of claim 7, wherein when the air pressure in the annular air bag is a local atmospheric pressure, the upper edge of the movable iron block is at least 5mm lower than the lower edge of the horizontal hole.

9. The system of claim 8, wherein the air supply pipe is provided with a one-way valve directed to the annular air bag, and the horizontal hole is provided with a one-way valve directed to the clean air hole.

10. The system of claim 9, wherein a rubber air sealing ring is fixed to a circumferential side surface of the movable iron block, an uppermost cleaning air hole has an upward inclination angle, the metal plate is an iron plate, and the diameters of the sponge plate drain hole and the metal plate drain hole are not smaller than the diameter of the drain hole.