CN111270742A - Urban rainwater treatment system - Google Patents
Urban rainwater treatment system Download PDFInfo
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- CN111270742A CN111270742A CN201911150370.2A CN201911150370A CN111270742A CN 111270742 A CN111270742 A CN 111270742A CN 201911150370 A CN201911150370 A CN 201911150370A CN 111270742 A CN111270742 A CN 111270742A
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- grass planting
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- rainwater
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/103—Naturals or landscape retention bodies, e.g. ponds
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/02—Shut-off devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/078—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted and linearly movable closure members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
- F16K31/0613—Sliding valves with cylindrical slides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses an urban rainwater treatment system, which comprises a grass planting ditch connected with an urban rainwater collection ditch and a reservoir for accumulating rainwater, wherein the side of the grass planting ditch is provided with a drainage ditch, a separation wall is arranged between the grass planting ditch and the drainage ditch, the grass planting ditch comprises a gravel filter layer at the bottom, a water-proof layer at the middle and a planting layer at the upper part, the planting layer comprises a plurality of grass planting buckets which are arranged at intervals and are used for planting plants, gravels are filled between the adjacent grass planting buckets, the separation wall is provided with a plurality of water passing holes from top to bottom, the reservoir is arranged at a position close to the end part of the grass planting ditch, a drainage pipeline is arranged between the gravel filter layer at the lower part of the grass planting ditch and the reservoir, the side wall of the drainage ditch is provided with a drainage port communicated with a municipal rainwater pipeline, and the height. The invention can effectively improve the rainwater treatment efficiency and is convenient for enlarging the rainwater storage capacity, thereby avoiding urban waterlogging caused by rainwater and facilitating the reutilization of the stored rainwater.
Description
Technical Field
The invention relates to the technical field of municipal engineering, in particular to an urban rainwater treatment system.
Background
Along with the development of cities, the impervious ground formed by concrete, asphalt and the like is increased rapidly, the original infiltration channel of rainfall is damaged, and the rainfall infiltration amount is greatly reduced, so that the underground water reserve is reduced; the water storage effect on the urban ground is greatly reduced, and urban waterlogging is easily caused.
Therefore, a sponge city concept is provided, and the main idea is to add some devices capable of adsorbing and storing rainwater, so that the waterlogging caused by rapid overflow of the rainwater can be avoided, and the rainwater can be reasonably utilized, thereby realizing the benign migration of the rainwater in the urban development. For example, the publication of "grass planting ditch at corner of road based on concept of sponge city" in chinese patent literature is CN109997560A, and specifically comprises a water storage unit and a grass planting ditch unit, wherein aquatic plants are planted in the water storage unit, and the water storage unit is connected with a municipal rainwater pipeline by a drainage connecting pipe. The grass planting ditch comprises a buffer unit, a slow flow layer, a planting soil layer, a zeolite layer and a gravel layer from top to bottom in sequence. The slow flow layer consists of a slow flow device and a cobble layer. The rainwater in the grass planting ditch is firstly hindered by the buffer unit and the flow buffering layer and reduces the flow speed, so that the plants can be prevented from being washed away. This grass planting ditch can improve retaining, drainage and water purification ability, alleviates runoff scouring strength, reduces the drought and flooding resistant requirement to all kinds of plants, is favorable to realizing the theory in sponge city.
However, such a grass planting ditch for treating rainwater has the following disadvantages: firstly, the water storage unit is independently arranged, and the rainwater enters the water storage unit after the treatment of buffering, purification and the like of the grass planting ditch. Because the grass planting ditch sets up on the roadside, and the retaining unit sets up at the grass planting ditch side, consequently, receives the restriction of ground condition, and the capacity of retaining unit is limited, makes the effect that this facility absorbed the rainwater limited, when meetting the great big, the torrential rain of precipitation in the short time, the unable a large amount of rainwater of storage of retaining unit, still can appear the waterlogging phenomenon such as road surface water level rises. Secondly, the independently arranged water storage unit is not convenient for the effective utilization of the internal water storage. More importantly, the retaining unit sets up the side at the grass planting ditch, and the rainwater in the grass planting ditch enters into the retaining unit of side from last to entering into after the filtration of zeolite layer, gravel layer down, and consequently, the volume of whole rainwater filters the route weak point, and the filter effect is poor. And the zeolite layer and the gravel layer used for filtering are provided with a planting soil layer used for planting plants, which can absorb part of rainwater in the initial stage, but can greatly reduce the speed of rainwater reaching the zeolite layer and the gravel layer, thereby reducing the filtering and purifying speed and efficiency of rainwater, and a large amount of rainwater easily overflows the grass planting ditch in a short time.
Disclosure of Invention
The invention aims to solve the problems that the existing grass planting ditches are low in rainwater treatment efficiency, small in rainwater collection capacity, easy to spread and cause waterlogging, difficult to recycle accumulated rainwater and the like when used for treating rainwater, and provides an urban rainwater treatment system which can effectively improve the rainwater treatment efficiency and is convenient for expanding the rainwater accumulation amount, so that urban waterlogging caused by rainwater is avoided, and the accumulated rainwater is convenient to recycle.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an urban rainwater processing system, includes the grass planting ditch that links to each other with urban rainwater collection irrigation canals and ditches, is used for accumulating the cistern of rainwater, is equipped with the escape canal at the side of grass planting ditch, is equipped with the division wall between grass planting ditch and escape canal, the grass planting ditch includes the gravel filter layer of bottom, the water barrier at middle part and the planting layer on upper portion, it includes the grass planting bucket that a plurality of intervals set up and plant the plant to plant the layer, and it has the gravel to fill between the adjacent grass planting bucket, and the division wall is equipped with a plurality of water holes down from last, and the cistern setting is being close to grass planting ditch tip department, is equipped with drainage pipe between the gravel filter layer of grass planting ditch lower part and the cistern, is equipped with the outlet that is linked together with municipal rainwater pipeline at the lateral wall in escape.
The grass planting ditch of the present invention can be arranged on the roadside so as to be connected with the rainwater collection ditch nearby. Similar to the existing grass planting ditch, the grass planting ditch is internally provided with a planting layer planted with plants such as similar aquatic plants and the like so as to form a blocking and buffering effect on rainwater entering the grass planting ditch, thereby reducing the flow rate of the rainwater and avoiding the strong scouring of the grass planting ditch of the rainwater. Different from the prior art, the grass planting layer comprises a grass planting barrel buried in gravel, and plants are planted in the grass planting barrel. That is, the grass planting bucket resembles a large flowerpot. When raining, rainwater get into when planting the grass ditch in, the earth in the grass planting bucket can play the effect of preliminary absorption rainwater, and remaining rainwater is then by the first filtration of grass planting bucket gravel all around to permeate downwards fast, get into in the escape canal side by side through the water hole of crossing on the division wall after receiving blockking of water barrier. The rainwater after primary filtration in the drainage ditch enters the gravel filtering layer at the lower part of the grass planting ditch for secondary filtration after passing through the water holes on the partition wall, and is filtered forwards along the longitudinal direction of the grass planting ditch and flows until entering the water storage tank through the drainage pipeline. The rainwater accumulated in the water storage tank can be used for urban greening, road surface cleaning or other industrial and commercial water. Thereby greatly improving the utilization value of the rainwater.
It should be noted that, in the present invention, the rainwater flows longitudinally along the grass planting ditch, and correspondingly the rainwater is longitudinally filtered in the gravel filtering layer, compared with the prior art that rainwater is transversely filtered, the path of rainwater filtering is greatly prolonged, so that the filtering effect can be greatly improved, the width of the grass planting ditch can be correspondingly reduced, and the occupation of precious urban land is reduced. Of course we can cover the gutters with cover plates to prevent the un-filtered rainwater from directly entering the gutters, and the gutters can be used as part of the sidewalk.
When meeting heavy rain, torrential rain even, perhaps when long-time raining, a large amount of rainwater can't be filtered rapidly by the gravel filter layer in the short time and enter into the cistern, perhaps a large amount of rainwater leads to the cistern to be full, and at this moment, rainwater accessible outlet in the escape canal gets into municipal rainwater pipeline and outwards discharges, avoids the rainwater overfilling of cistern. That is to say, the invention can fully play a role in absorbing rainwater, and avoid urban waterlogging caused by rapid rise of water level in rainy days. And the rainwater can be fully released after the rain stops, thereby saving the clean water such as the precious tap water.
Particularly, as the height of the water outlet is not lower than that of the partition wall, when the rainfall is not large, the rainwater subjected to primary filtration in the grass planting ditch can completely enter the drainage ditch; when the rainfall exceeded the holding limit in escape canal, the water level can be higher than the division wall, and the not filterable rainwater in grass planting ditch top layer was crossed the division wall and is got into in the escape canal this moment to directly get into municipal rainwater pipeline through the wash port and outwards discharge. That is, the drain hole may effectively function to define the water level within the drain.
It can be understood that a plurality of urban rainwater treatment systems can be arranged on two sides of a road, so that the grass planting ditch is kept at a proper length, the gravel filtering layer is enabled to form a proper length, the filtering effect of the gravel filtering layer can be ensured, rainwater can be stored in the water storage pool as soon as possible, the road flooding is avoided, meanwhile, the rainwater in the water storage pool can be conveniently used nearby, and the construction cost of a water delivery pipe network is reduced. In addition, a plurality of urban rainwater treatment systems are convenient for arranging a plurality of water reservoirs in scattered open lands, so that the accumulation of rainwater is increased, and the vacant places in cities are fully utilized.
Preferably, the barrel wall of the grass planting barrel is provided with a plurality of communicating holes, and the inner side wall of the grass planting barrel is provided with a filter screen covering the communicating holes.
After the rain stops, the rain water absorbed in the soil in the grass planting barrel can gradually permeate into the surrounding gravels through the communicating holes on the barrel wall, thereby avoiding the plants from being necrotic due to long-time rain water immersion. The filter screen can prevent soil from entering the gravels so as to ensure the primary filtering effect of the gravels on rainwater.
Preferably, the grass planting barrels are regular hexagons, a plurality of rows of the grass planting barrels are arranged in the planting layer, adjacent grass planting barrels in each row of the grass planting barrels are connected through a left vertex angle and a right vertex angle, the two adjacent rows of the grass planting barrels are arranged in a staggered mode, so that a plurality of regular-triangular filter cavities are formed between the two adjacent rows of the grass planting barrels, gravels are arranged in the filter cavities and between the water-resisting layer and the bottom of the grass planting barrel, the communication holes comprise water filtering holes formed in the bottom wall of the grass planting barrel and water drainage holes formed in the upper portion of the side wall of the grass planting barrel, and the height of each water drainage hole is 5-10cm higher than the height of soil in the grass planting barrel.
The invention arranges a plurality of rows of regular hexagon grass planting barrels in the planting layer, namely, each grass planting barrel has 6 120-degree vertex angles, the grass planting barrels in each row are connected by the left vertex angle and the right vertex angle, and the grass planting barrels in two adjacent rows are arranged in a staggered way, so that 3 grass planting barrels in two adjacent rows form a regular trilateral filter cavity. Rainwater in the grass planting barrel can be discharged through the water filtering holes at the bottom to enter gravels at the lower part of the grass planting barrel for preliminary filtration, so that the phenomenon that the growth of plants is influenced by overhigh water level in the grass planting barrel is avoided. When the rainwater in the grass planting barrel rises to the position of the drain hole, the rainwater can flow out through the drain hole and extend into the gravel in the filtering cavity outside the grass planting barrel for primary filtering. Through reasonably controlling the height of the drain hole relative to the soil in the grass planting barrel, the rainwater in the grass planting barrel can be discharged to avoid long-time flooding, and meanwhile, the short-time water absorption and storage effects of the grass planting barrel are fully exerted.
Preferably, the water pump further comprises a water pump, a main water inlet pipeline, an auxiliary water inlet pipeline and a water conveying pipeline connected with a water outlet of the water pump, wherein one end of the main water inlet pipeline is connected with the reservoir, one end of the auxiliary water inlet pipeline is connected with a tap water pipe, the other ends of the main water inlet pipeline and the auxiliary water inlet pipeline are connected with a water inlet of the water pump through a control valve, the control valve comprises a control valve core, the control valve core is provided with a main conduction position and an auxiliary conduction position, when the water pump is stopped, the control valve core is located at the auxiliary conduction position, and the main water inlet pipeline and the auxiliary water inlet pipeline are both communicated; when the water pump is started, the water flow in the main water inlet pipeline enables the control valve core to move to the main conducting position, the main water inlet pipeline is communicated with the water inlet, and the auxiliary water inlet pipeline is cut off from the water inlet.
The invention arranges a water pump beside a reservoir and a main water inlet pipeline and an auxiliary water inlet pipeline. The main water inlet pipeline and the auxiliary water inlet pipeline are connected with a water inlet of the water pump through a control valve. When the rainwater in the reservoir is needed to be used for watering green lands on two sides of a road or the road watering cart needs to be filled with water, the water pump can be started, at the moment, the main water inlet pipeline connected with the reservoir can extract the rainwater in the reservoir, and the rainwater is output outwards through the water delivery pipeline after being pressurized by the water pump. When the rainwater in the water storage tank is dry, the water pump can draw tap water of the auxiliary water inlet pipeline, so that the water cut-off phenomenon can be effectively avoided. Particularly, the control valve core of the control valve is provided with a main conduction position and an auxiliary conduction position, when the water pump is started, the water flow in the main water inlet pipeline enables the control valve core to move to the main conduction position, the main water inlet pipeline is communicated with the water inlet, and the auxiliary water inlet pipeline is cut off from the water inlet, so that rainwater in the main water inlet pipeline can be effectively prevented from entering the urban tap water pipe network through the auxiliary water inlet pipeline, and the tap water pipe network is prevented from being polluted by rainwater. That is, when the rainwater in the reservoir is sufficient, the control valve forms a reverse cut-off effect on the auxiliary water inlet pipeline.
It can be understood that the urban rainwater treatment system of the invention does not need to consider the storage capacity of rainwater in the reservoir, can always keep normal use of greening water, cleaning water and the like, and is beneficial to continued rainwater collection to the maximum extent.
Preferably, the control valve comprises a valve body, one end of the valve body is provided with a first through hole and a second through hole at intervals, the first through hole and the second through hole penetrate the other end of the valve body, a control valve hole perpendicular to the first channel and the second channel is arranged in the valve body, one end of the first through hole is connected with the main water inlet pipeline, the other end of the first through hole is connected with the water inlet hole through a pipeline, one end of the second through hole is connected with the auxiliary water inlet pipeline, the other end of the second through hole is connected with the water inlet hole through a pipeline, one end of the control valve hole is crossed with the first through hole, the other end of the control valve hole is crossed with the second through hole, the control valve core is arranged in the control valve hole, the center of the control valve core is spliced with a rotating shaft, two ends of the rotating shaft are connected with the valve body, the outer side of the valve body is provided with a guide rod extending inwards, the inner end of the guide rod is positioned in the spiral groove, a steel wire coil spring is wound on the rotating shaft, one end of the coil spring is connected to the valve body, and the other end of the coil spring is connected to the end face of the turbine, so that the control valve core is positioned at an auxiliary conduction position.
When the control valve core rotates, the spiral groove on the surface of the control valve core generates an axial force under the action of the guide rod, so that the control valve core generates axial displacement when rotating. When the water pump is stopped, the control valve core is positioned at the auxiliary conduction position, the initial elastic force of the steel wire coil spring can drive the control valve core to rotate in the positive direction and move axially, the control valve core moves towards the first through hole at the moment, the turbine enters the first through hole, and the first through hole and the second through hole are both in a conduction state at the moment; when the water pump is started, rainwater in the reservoir enters the first through hole through the main water inlet pipeline and is output outwards through the water conveying pipeline after being pressurized by the water pump. At the moment, the water flow in the first through hole drives the turbine to rotate reversely, the control valve core moves towards the second through hole, and the cylindrical cut-off section of the control valve core enters the second through hole, so that the second through hole is in a cut-off state, and the control valve core enters the main conducting position at the moment, so that an auxiliary water inlet pipeline connected with tap water can be automatically cut off, the waste of tap water is avoided, and meanwhile, rainwater is effectively prevented from reversely flowing into the tap water pipeline; when rainwater in the reservoir is dry, when water flow of the first through hole is interrupted, the turbine loses power, the initial elastic force of the steel wire coil spring can drive the control valve core to rotate in the forward direction and move axially, the control valve core moves towards the first through hole, the cut-off section exits the second through hole, the second through hole is conducted at the moment, tap water in the auxiliary water inlet pipeline can pass through the second through hole and is output outwards from the water conveying pipeline after being pressurized by the water pump.
That is, the control valve of the invention can realize automatic switching of rainwater and tap water, ensure rainwater priority and effectively separate rainwater and tap water.
Preferably, a push-pull electromagnet is arranged on the outer side of the valve body, a moving rod is coaxially connected with a moving iron core of the electromagnet, the moving rod movably extends into the valve body and crosses with the second through hole, the moving rod comprises a core rod and a sliding sleeve, the outer end of the core rod is connected with the moving iron core, the sliding sleeve is sleeved on the inner end of the core rod, a pressure spring abutting against the inner end of the core rod is arranged in the sliding sleeve, an axial limiting groove is formed in the side wall of the core rod, which is positioned in the sliding sleeve, and a limiting.
When water supply is not needed, the water pump is in a stop state, the push-pull type electromagnet is in a power-off state at the moment, the sliding sleeve enters the second through hole under the action of the pressure spring, and the second through hole is in a stop state, so that running water is effectively prevented from reversely flowing back to the first through hole through the second through hole and the water inlet of the water pump and entering the water storage tank through the main water inlet pipeline. When water needs to be supplied, the water pump can be started, the push-pull type electromagnet is electrified, the movable iron core drives the movable rod to axially move at the moment, the sliding sleeve is driven to move out of the second through hole, and the control valve can be automatically switched to a tap water auxiliary water supply state when the water storage tank is free of water. Particularly, the moving rod comprises a core rod and a sliding sleeve sleeved outside the core rod, wherein the side wall of the core rod is provided with an axial limiting groove, and the side wall of the sliding sleeve is provided with a limiting pin positioned in the limiting groove. That is, the sliding sleeve can produce a certain axial displacement relative to the core rod. Therefore, when the water pump is started and the electromagnet is electrified, the electromagnet drives the core rod to move rapidly. Because the plug can move certain distance relative to the sliding sleeve, only after the plug moves certain distance, the spacer pin makes the new edition drive the sliding sleeve and move and leave the second through-hole. That is, at the initial stage of starting the water pump, the moving rod has a lag relative to the water pump, which ensures that the water pump preferentially pumps the rainwater in the main water inlet pipeline, so that the water flow is formed in the first through hole to move the control valve core to the main conducting position, and the second through hole is cut off.
Preferably, the circuits of the water pump and the electromagnet are connected in parallel and then are connected in series with the control switch, so that the control switch can control the on-off of the circuits of the water pump and the electromagnet at the same time.
Because the control switch can control the on-off of the water pump and the electromagnet circuit at the same time, when the control switch is turned on, the rainwater of the reservoir can be preferentially pumped by the hand pump by depending on the hysteresis effect of the movable rod sliding sleeve.
Therefore, the invention has the following beneficial effects: the rainwater treatment efficiency can be effectively improved, the rainwater accumulation amount is convenient to expand, urban waterlogging caused by rainwater is avoided, and the accumulated rainwater is convenient to reuse.
Drawings
FIG. 1 is a schematic view of a structure of a grass-planting trench of the present invention.
Fig. 2 is a schematic view of the connection structure of the grass planting furrows and the water reservoir.
Fig. 3 is a schematic view of the arrangement structure of the grass planting barrel.
Fig. 4 is a schematic structural view of the grass planting barrel.
Fig. 5 is a schematic view of the structure of the control valve.
In the figure: 1. the device comprises a grass planting ditch 11, a gravel filter layer 12, a water-resisting layer 13, a planting layer 131, a grass planting barrel 132, gravel 133, a filter cavity 134, a water filtering hole 135, a water discharging hole 14, a water discharging pipeline 2, a reservoir 3, a water discharging ditch 31, a water discharging hole 4, a separation wall 41, a water passing hole 5, a water pump 51, an output pipeline 6, a main water inlet pipeline 7, an auxiliary water inlet pipeline 8, a control valve 81, a valve body 811, a first through hole 812, a second through hole 813, a control valve hole 814, a guide rod 815, a sealing plug 82, a control valve plug 821, a cut-off section 822, a turbine 823, a spiral groove 83, a rotating shaft 84, a steel wire coil spring 9, an electromagnet 91, a moving rod 911, a core rod 912, a.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
As shown in fig. 1 and 2, a city rainwater treatment system includes a grass planting ditch 1 connected to a city rainwater collection ditch, a reservoir 2 for accumulating rainwater, a drainage ditch 3 provided side by side at the grass planting ditch, and a partition wall 4 provided between the grass planting ditch and the drainage ditch to partition the grass planting ditch and the drainage ditch. The grass planting ditch includes gravel filter layer 11 of bottom, the water barrier 12 in middle part and planting layer 13 on upper portion, and the planting layer includes grass planting bucket 131 that a plurality of intervals set up, and the grass planting bucket intussuseption is filled with earth to it has moisture-resistant plant to plant, and it has gravel 132 to fill between the adjacent grass planting bucket. The partition wall is provided with a plurality of water holes 41 from top to bottom, the water reservoirs are arranged at the sides of the two ends of the grass planting ditch, and a drainage pipeline 14 is arranged between the gravel filtering layer at the lower part of the grass planting ditch and the water reservoirs, namely, one end of the drainage pipeline is connected at the lower part of the closed end wall of the grass planting ditch, and the other end of the drainage pipeline is connected at the pool wall of the water reservoir.
During the time of just raining, the rainwater falls into the grass planting ditch, perhaps in the rainwater entering grass planting ditch of urban rainwater collection irrigation canals and ditches centralization ground, most rainwater gets into the grass planting bucket in, and the earth in the grass planting bucket can play the effect of preliminary absorption rainwater, and remaining rainwater then is filtered for the first time by grass planting bucket gravel all around to permeate downwards fast. When the rainfall is great, the rainwater primarily filtered by the gravel is gradually increased, and the rainwater enters the side-by-side drainage ditch through the water passing holes in the partition wall after being blocked by the waterproof layer. The rainwater subjected to primary filtration in the drainage ditch enters the gravel filtering layer at the lower part of the grass planting ditch for secondary filtration after passing through the water holes on the partition wall, and is filtered forwards along the longitudinal direction of the grass planting ditch and flows until entering the water storage tank through the drainage pipeline, so that the rainwater is used for urban greening, pavement cleaning or other industrial and commercial water, and the utilization value of the rainwater is greatly improved.
The water-barrier layer may be made of concrete or a water-barrier material such as a plastic sheet or a rubber sheet.
In order to avoid overflow of rainwater in the grass planting ditch when the rainfall is too large, a water outlet 31 communicated with a municipal rainwater pipeline is formed in the side wall of the drainage ditch, and the height of the water outlet is not lower than that of the partition wall. When the rainwater water level in the drainage ditch gradually rises to exceed the height of the partition wall, rainwater can be discharged into the municipal rainwater pipeline through the drainage outlet.
Preferably, the barrel wall of the grass planting barrel can be provided with a plurality of communicating holes, and the inner side wall of the grass planting barrel is provided with a filter screen covering the communicating holes. After the rain stops, the rain water absorbed in the soil in the grass planting barrel can gradually permeate into the surrounding gravels through the communicating holes on the barrel wall, thereby avoiding the plants from being necrotic due to long-time rain water immersion. The filter screen can prevent soil from entering the gravels so as to ensure the primary filtering effect of the gravels on rainwater.
Further, as shown in fig. 3 and 4, the grass planting barrel can be made into a regular hexagonal shape, so that each grass planting barrel has 6 apex angles of 120 degrees, a plurality of rows of grass planting barrels are arranged in the planting layer, the adjacent grass planting barrels in each row of grass planting barrel are connected with the left apex angle and the right apex angle, the two adjacent rows of grass planting barrels are arranged in a staggered manner, the left lower apex angle of the upper row of grass planting barrels is connected with the right upper apex angle of the lower row of grass planting barrels, the right lower apex angle of the upper row of grass planting barrels is connected with the left upper apex angle of the lower row of grass planting barrels, so that a plurality of regular triangular filter cavities 133 are formed between the two adjacent rows of grass planting barrels, gravel is arranged in the filter cavities and between the waterproof layer and the bottom of the grass planting barrels, and the height of the grass planting barrels is smaller than that of the planting layer. The stable structure of regular triangle can ensure the fixing of grass planting bucket position, avoids it to walk the position. The communication hole comprises a water filtering hole 134 arranged at the bottom wall of the grass planting barrel and a water drainage hole 135 arranged at the upper part of the side wall of the grass planting barrel, and the height of the water drainage hole is 5-10cm higher than the height of soil in the grass planting barrel.
Rainwater in the grass planting barrel can be discharged through the water filtering holes at the bottom to enter gravels at the lower part of the grass planting barrel for preliminary filtration, so that the phenomenon that the growth of plants is influenced by overhigh water level in the grass planting barrel is avoided. When the rainwater in the grass planting barrel rises to the position of the drain hole, the rainwater can flow out through the drain hole and extend into the gravel in the filtering cavity outside the grass planting barrel for primary filtering. Through reasonably controlling the height of the drain hole relative to the soil in the grass planting barrel, the rainwater in the grass planting barrel can be discharged to avoid long-time flooding, and meanwhile, the short-time water absorption and storage effects of the grass planting barrel are fully exerted.
In order to facilitate the utilization of rainwater in the reservoir, as shown in fig. 5, the invention further comprises a water pump 5 with a water inlet and a water outlet, a main water inlet pipeline 6, an auxiliary water inlet pipeline 7 and a water delivery pipeline 51 connected with the water outlet of the water pump, wherein one end of the main water inlet pipeline is connected with the reservoir, one end of the auxiliary water inlet pipeline is connected with a municipal tap water pipe, and the other ends of the main water inlet pipeline and the auxiliary water inlet pipeline are connected with the water inlet of the water pump through a control valve 8. The control valve includes a control spool 82 having a primary conduction position and an auxiliary conduction position. When the water pump is stopped, the control valve core is in the auxiliary conduction position, and the main water inlet pipeline and the auxiliary water inlet pipeline are communicated with the water inlet at the moment; when the water pump is started, the water flow in the main water inlet pipeline enables the control valve core to move to the main conducting position, the main water inlet pipeline is communicated with the water inlet, and the auxiliary water inlet pipeline is cut off from the water inlet.
When the rainwater in the reservoir is needed to be used for watering green lands on two sides of a road or the road watering cart needs to be filled with water, the water pump can be started, at the moment, the main water inlet pipeline connected with the reservoir can extract the rainwater in the reservoir, and the rainwater is output outwards through the water delivery pipeline after being pressurized by the water pump. When the rainwater in the water storage tank is dry, the water pump can draw tap water of the auxiliary water inlet pipeline, so that the water cut-off phenomenon can be effectively avoided.
It should be noted that the water pump can be turned on and off by a remote controller, and even the mobile phone app can be remotely controlled through a network. Since the above technical solutions are all the prior art, they are not described herein too much.
Preferably, the control valve comprises a valve body 81, a first through hole 811 and a second through hole 812 penetrating the other end are arranged at one end of the valve body at intervals, a control valve hole 813 vertical to the first and second channels is arranged in the valve body, one end of the first through hole is connected with a main water inlet pipeline, and the other end is connected with a water inlet of the water pump through a pipeline. One end of the second through hole is connected with the auxiliary water inlet pipeline, and the other end of the second through hole is connected with a water inlet of the water pump through a pipeline. One end of the control valve hole is crossed with the first through hole, the other end of the control valve hole is crossed with the second through hole, the control valve core is arranged in the control valve hole, a rotating shaft 83 is inserted in the center of the control valve core, and two ends of the rotating shaft extend out of the control valve core and are connected with the valve body, so that the control valve core can rotate around the rotating shaft. One end of the control valve core close to the second through hole is a cylindrical stop section 821, the other end of the control valve core is provided with a turbine 822, and the turbine is positioned in the first through hole. In addition, a spiral groove 823 is formed in the circumferential surface of the stop section on the side close to the turbine, an inward extending guide rod 814 is arranged on the outer side of the valve body, and the inner end of the guide rod is located in the spiral groove, so that the control valve core can form axial displacement when rotating. When the stop section of the control valve core enters the second through hole to stop the second through hole, the control valve core is in the main conducting position, and the turbine is still positioned in the second through hole at the moment; when the stop section of the control valve core leaves the second through hole so as to lead the second through hole to be conducted, the control valve core is in the auxiliary conducting position.
It will be appreciated that the turbine is unable to close the first through-hole and therefore the first through-hole is always in a conducting state.
In addition, a wire coil spring 84 is wound around the rotary shaft, one end of the coil spring is connected to the valve body, and the other end is connected to the end face of the turbine wheel, and the coil spring drives the control valve member to rotate around the rotary shaft, thereby axially displacing and positioning the control valve member at the auxiliary on position.
When the water pump is stopped, the control valve core is positioned at the auxiliary conduction position; when the rainwater in the reservoir needs to be used, the water pump is started, the rainwater in the reservoir enters the first through hole through the main water inlet pipeline and is output outwards through the water delivery pipeline after the water pump is pressurized. At the moment, the water flow in the first through hole drives the turbine to rotate reversely, the control valve core moves towards the second through hole, and the cylindrical cut-off section of the control valve core enters the second through hole, so that the second through hole is in a cut-off state, and the control valve core enters the main conducting position at the moment, so that an auxiliary water inlet pipeline connected with tap water can be automatically cut off, the waste of tap water is avoided, and meanwhile, rainwater is effectively prevented from reversely flowing into the tap water pipeline; when rainwater in the reservoir is dry, the first through hole does not allow water to pass through, the turbine loses power, the initial elastic force of the steel wire coil spring can drive the control valve core to rotate in the forward direction and move axially, the control valve core moves towards the first through hole, the cut-off section exits from the second through hole, the second through hole is conducted at the moment, tap water in the auxiliary water inlet pipeline can pass through the second through hole and is output outwards from the water conveying pipeline after being pressurized by the water pump.
It should be noted that the diameter of the stopping section should be not smaller than the diameter of the second through hole, and the axis of the stopping section passes through the axis of the second through hole, so that the stopping section effectively stops the second through hole. The axial line of the first through hole and the axial line of the control valve core can have an eccentricity so that water flow in the first through hole flushes one side of the turbine to form a torque on the turbine, and the axial length of the turbine is not less than the sum of the diameter of the first through hole and the axial movement amount of the control valve core. In addition, the control valve hole can run through the two side walls of the valve body to facilitate the processing of the valve body, and two ends of the control valve hole are provided with sealing plugs 815 which are in threaded connection to facilitate the installation and the positioning of the control valve core.
Furthermore, a push-pull electromagnet 9 can be arranged outside the valve body, and the push-pull electromagnet comprises a movable iron core, a movable rod 91 coaxially connected with the movable iron core and a spring capable of automatically resetting the movable iron core, wherein the movable rod movably extends into the valve body and is crossed with the second through hole. That is, when the inner end of the moving rod is located in the second through hole, the second through hole is stopped; when the inner end of the movable rod leaves the second through hole, the second through hole is communicated. In addition, the movable rod comprises a core rod 911 with an outer end connected with the movable iron core and a sliding sleeve 912 which is sleeved at the inner end of the core rod and has a closed end, a pressure spring 913 which is pressed against the inner end of the core rod is arranged in the sliding sleeve, an axial limit groove 914 is arranged on the side wall of the core rod which is positioned in the sliding sleeve, a limit pin 915 is arranged on the side wall of the sliding sleeve, and the inner end of the limit pin is positioned. That is, a non-rigid connection is formed between the mandrel and the sliding sleeve, which has a hysteresis effect when moving axially relative to the mandrel.
In order to facilitate the control of the push-pull type electromagnet, the circuits of the water pump and the electromagnet are connected in parallel and then are connected in series with a control switch, so that the control switch can control the on-off of the circuits of the water pump and the electromagnet at the same time.
When water supply is not needed, the control switch is in an off state, the water pump is stopped at the moment, the push-pull electromagnet is in a power-off state, the movable iron core is automatically positioned on one side close to the second through hole under the action of the spring, the sliding sleeve of the movable rod enters the second through hole under the action of the pressure spring, and the second through hole is in a cut-off state, so that running water is effectively prevented from reversely flowing back to the first through hole through the second through hole and the water inlet of the water pump and entering the water reservoir through the main water inlet pipeline. When water needs to be supplied, a control switch can be turned on, the water pump is powered on to start, the push-pull type electromagnet is powered on simultaneously, and the movable iron core drives the movable rod to move axially outwards. If the reservoir has water, the sliding sleeve still is positioned in the second through hole and the second through hole is still in a stop state because the sliding sleeve has a hysteresis effect when moving axially relative to the core rod, and the water pump can preferentially extract rainwater in the reservoir through the main water inlet pipeline. Then, the water flow in the first through hole enables the control valve core to move to the main through hole position to cut off the first through hole, and the sliding sleeve leaves the second through hole at the moment, so that the mixing of tap water and rainwater is effectively avoided; if the cistern is dry at this moment, first through-hole can't form rivers, and the control case stays in supplementary switch-on position. And the running water can enter the water pump through the second through hole and is sent out by the water conveying pipeline after being pressurized by the water pump.
It is understood that the control switch can be turned on and off by a remote controller as described above, and even remotely controlling the mobile phone app through a network.
Claims (7)
1. The utility model provides an urban rainwater processing system, includes the grass planting ditch that links to each other with urban rainwater collection irrigation canals and ditches, is used for accumulating the cistern of rainwater, characterized by is equipped with the escape canal at the side of grass planting ditch, is equipped with the division wall between grass planting ditch and escape canal, the grass planting ditch includes the gravel filter layer of bottom, the water barrier at middle part and the planting layer on upper portion, planting layer includes the grass planting bucket that a plurality of intervals set up and plant the plant, and it has the gravel to fill between the adjacent grass planting bucket, and the division wall is equipped with a plurality of water holes down from last, and the cistern setting is being close to grass planting ditch tip department, is equipped with drainage pipe between gravel filter layer and the cistern of grass planting ditch lower part, is equipped with the outlet that is linked together with municipal rainwater pipeline at the lateral wall in escape canal, the height.
2. The urban rainwater treatment system according to claim 1, wherein the barrel wall of the grass planting barrel is provided with a plurality of communication holes, and the inner side wall of the grass planting barrel is provided with a filter screen covering the communication holes.
3. The urban rainwater treatment system according to claim 2, wherein the grass planting barrels are regular hexagonally shaped, a plurality of rows of the grass planting barrels are arranged in the planting layer, adjacent grass planting barrels in each row of the grass planting barrels are connected with a left top angle and a right top angle, two adjacent rows of the grass planting barrels are arranged in a staggered mode, so that a plurality of regular trilateral filter cavities are defined between the two adjacent rows of the grass planting barrels, the gravels are arranged in the filter cavities and between the water-resisting layer and the bottom of the grass planting barrel, the communication holes comprise water filtering holes arranged on the bottom wall of the grass planting barrel and water drainage holes arranged on the upper portion of the side wall of the grass planting barrel, and the height of each water drainage hole is 5-10cm higher than the height of soil in the grass planting barrel.
4. The urban rainwater treatment system according to claim 1, further comprising a water pump, a main water inlet pipeline, an auxiliary water inlet pipeline, and a water delivery pipeline connected to a water outlet of the water pump, wherein one end of the main water inlet pipeline is connected to the reservoir, one end of the auxiliary water inlet pipeline is connected to the tap water pipe, the other ends of the auxiliary water inlet pipeline and the main water inlet pipeline are connected to a water inlet of the water pump through a control valve, the control valve comprises a control valve core, the control valve core has a main conducting position and an auxiliary conducting position, when the water pump is stopped, the control valve core is in the auxiliary conducting position, and the main water inlet pipeline and the auxiliary water inlet pipeline are both communicated with the water inlet; when the water pump is started, the water flow in the main water inlet pipeline enables the control valve core to move to the main conducting position, the main water inlet pipeline is communicated with the water inlet, and the auxiliary water inlet pipeline is cut off from the water inlet.
5. A city rainwater treatment system according to claim 4, wherein said control valve comprises a valve body, a first through hole and a second through hole are provided at one end of the valve body at intervals through the other end, a control valve hole perpendicular to the first and second passages is provided in the valve body, one end of the first through hole is connected to the main water inlet pipeline, the other end is connected to the water inlet hole through a pipeline, one end of the second through hole is connected to the auxiliary water inlet pipeline, the other end is connected to the water inlet hole through a pipeline, one end of the control valve hole intersects the first through hole, the other end of the control valve hole intersects the second through hole, said control valve core is provided in the control valve hole, a rotation shaft is inserted in the center of the control valve core, both ends of the rotation shaft are connected to the valve body, one end of the control valve core is a cylindrical stop section near the second through hole, and the other, the periphery of the cut-off section, which is close to one side of the turbine, is provided with a spiral groove, the outer side of the valve body is provided with a guide rod extending inwards, the inner end of the guide rod is positioned in the spiral groove, a steel wire coil spring is wound on the rotating shaft, one end of the coil spring is connected to the valve body, and the other end of the coil spring is connected to the end face of the turbine, so that the control valve core is positioned at an auxiliary.
6. The urban rainwater treatment system according to claim 5, wherein a push-pull electromagnet is arranged outside the valve body, a moving rod is coaxially connected to a moving iron core of the electromagnet, the moving rod movably extends into the valve body and crosses the second through hole, the moving rod comprises a core rod with an outer end connected with the moving iron core, a sliding sleeve is sleeved at the inner end of the core rod, a pressure spring is arranged in the sliding sleeve and is used for pressing against the inner end of the core rod, an axial limiting groove is arranged on the side wall of the core rod in the sliding sleeve, and a limiting pin with an inner end positioned in the limiting groove is arranged on the side wall of.
7. The urban rainwater treatment system according to claim 6, wherein the circuits of the water pump and the electromagnet are connected in parallel and then connected in series with the control switch, so that the control switch can control the on-off of the circuits of the water pump and the electromagnet at the same time.
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| CN201911150370.2A CN111270742A (en) | 2019-11-21 | 2019-11-21 | Urban rainwater treatment system |
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| CN201911150370.2A CN111270742A (en) | 2019-11-21 | 2019-11-21 | Urban rainwater treatment system |
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| CN111270742A true CN111270742A (en) | 2020-06-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112761215A (en) * | 2021-01-25 | 2021-05-07 | 上海勘测设计研究院有限公司 | Collection rain clean system convenient to clearance |
| CN113207473A (en) * | 2021-03-25 | 2021-08-06 | 章亿男 | Road middle green belt for sponge city |
| CN115336490A (en) * | 2022-08-10 | 2022-11-15 | 中国市政工程中南设计研究总院有限公司 | Unpowered maintenance-free green roof design system |
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| CN113207473A (en) * | 2021-03-25 | 2021-08-06 | 章亿男 | Road middle green belt for sponge city |
| CN115336490A (en) * | 2022-08-10 | 2022-11-15 | 中国市政工程中南设计研究总院有限公司 | Unpowered maintenance-free green roof design system |
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Application publication date: 20200612 |
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