CN217232433U - Water supply and drainage equipment device for roof garden - Google Patents

Abstract

The utility model relates to a roof garden gives drainage equipment device is equipped with roof kind plant district, roof kind plant district is equipped with the cofferdam, be equipped with on the base face in roof kind plant district mainly with waterproofing membrane lay the infiltration water conservancy diversion layer that forms, waterproofing membrane is equipped with bed course, geotechnological rete, water guide layer and geotechnological cloth layer from the end to the top in proper order, bed course, geotechnological rete, water guide layer and geotechnological cloth layer bond in proper order, be equipped with the guiding gutter that extends along waterproofing membrane length direction on the top surface of water guide layer, the periphery on infiltration water guide layer is equipped with the passageway that catchments, the both ends port of guiding gutter communicates the passageway that catchments at corresponding position separately respectively, the bottom of cofferdam is equipped with the cofferdam drain pipe, the import intercommunication of cofferdam drain pipe catchment passageway. The utility model discloses can realize the automatic watering and the automatic drainage of roof garden, the drainage can be used for the watering of roof garden once more after filtering and deposiing, has realized the cyclic utilization of water resource.

Description

Water supply and drainage equipment device for roof garden

Technical Field

The utility model relates to a garden water supply and drainage equipment facility especially relates to a roof garden water supply and drainage equipment device.

Background

As an urban greening mode, the roof garden not only has excellent cooling and heat insulation effects on buildings, but also can beautify the environment, purify the air, improve local microclimate, enrich the pitching landscape of the city, compensate the greening ground occupied by the buildings and improve the greening coverage rate of the city. The traditional irrigation mode for the roof garden is manual periodic irrigation, and a large amount of manpower and time are consumed. In rainy seasons, accumulated water is often formed in roof gardens, and if the accumulated water is not discharged in time, the growth of plants is influenced, and roof leakage is easily caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a roof garden water supply and drainage equipment device, which can realize the automatic irrigation and automatic drainage of the roof garden.

The utility model discloses realize that the technical scheme of above-mentioned purpose is: a water supply and drainage device for a roof garden is provided with a roof planting area (a roof garden) and is characterized in that the roof planting area is provided with a cofferdam, a water seepage and diversion layer mainly formed by laying waterproof coiled materials is arranged on a base surface of the roof planting area, the waterproof coiled materials are sequentially provided with a cushion layer, a geomembrane layer, a water diversion layer and a geotextile layer from bottom to top (the direction/position facing the base surface in a waterproof roll layer is the bottom), the cushion layer, the geomembrane layer, the water diversion layer and the geotextile layer are sequentially bonded, a water guide groove extending along the length direction of the waterproof coiled materials is arranged on the top surface of the water guide layer, the periphery of the water seepage and diversion layer is provided with water collection channels, two end ports of the water guide groove are respectively communicated with water collection channels of the corresponding positions, a cofferdam drainage pipe is arranged at the bottom of the cofferdam, and an inlet of the cofferdam drainage pipe is communicated with the water collection channels.

The base surface of the roof planting area can be a waterproof roof surface or a planting platform surface erected on a roof.

The base of the roof planting area may be a horizontal plane or a slightly inclined plane (which may be referred to as an inclined plane), or a plane inclined from the middle to both sides simultaneously (which may be considered to consist of two or more inclined planes or of a respective horizontal plane and inclined plane).

When the base surface of the planting area is an inclined plane (the base surface usually has a smaller slope), when the impermeable layer is laid, the extending direction of the water guiding groove is preferably consistent with the inclined direction of the base surface of the planting area, so that water in the water guiding groove can flow downwards into the water collecting channel along the inclined direction of the base surface.

The waterproof coiled material can be laid according to the prior art, the joint part adopts proper modes such as splicing or lapping, waterproof strips lapped on the edges of the coiled materials on two sides can be arranged below and above the joint during splicing, waterproof sealing adhesive is coated at the joint and between the waterproof strips and the coiled materials, and the waterproof sealing adhesive can be coated in the lapping area and the area near the lapping edge during lapping.

The waterproofing of the inner side surface of the cofferdam can be arranged according to prior art.

In all the constructions related to the utility model, the original waterproof layer of the roof is not destroyed.

When the base surface of the planting area is inclined, the cofferdam drainage pipe is usually arranged on the cofferdam at the lower side.

The cofferdam drain pipe can pass through the cofferdam, so that the inlet of the cofferdam drain pipe is opened in the water collecting channel, and the outlet of the cofferdam drain pipe is positioned outside the cofferdam.

The cushion layer may be made of any suitable material, such as a rubber-plastic material with suitable flexibility or hardness, in particular a foamed (foamed) rubber-plastic material, such as foamed EVA, or foamed PVC, and the thickness thereof may be set appropriately according to actual needs and material characteristics.

The geomembrane may be of any suitable prior art and is a multi-layer construction of impermeable material.

The water-conducting layer can be made of a high polymer material or a rubber plastic material with appropriate hardness, and can be a foamed (foamed) rubber plastic material, such as foamed EVA, foamed PVC or foamed NBR.

The proper cushion layer and water guide layer materials can be selected according to actual needs.

The geotextile may be of any suitable prior art, typically a multi-layer construction of water permeable material.

The bonding between the layers can be realized by adopting a proper bonding agent, and the bonding between the layers can also be realized by adopting other modes such as heat sealing and the like according to the material characteristics.

The geotextile layer should be flatly laid on the water guide layer and does not sink into the water guide groove.

The number of the water chutes on the waterproof roll can be set according to actual needs, and usually, a plurality of water chutes can be distributed at equal intervals.

The water guide groove can be internally provided with or not provided with an elastic supporting tube, and the tube wall of the elastic supporting tube is distributed with a plurality of water collecting holes penetrating through the tube wall.

The elastic supporting tube can be a rubber tube and can support the geotextile covering the water guide groove, and meanwhile, water in the water guide groove can flow into the elastic supporting tube, so that the tube diameter of the elastic supporting tube becomes a part of a water collecting space, and the water collecting space of the water guide groove is prevented from being excessively occupied by the elastic supporting tube.

The spiral elastic wires are preferably fixedly connected in the pipe wall of the elastic supporting pipe, the elastic wires can be thin steel wires with the diameter smaller than the wall thickness of the elastic supporting pipe and are spiral like the spiral springs, but the thread pitch can be obviously larger than that of the conventional spiral springs, and the supporting capacity of the elastic supporting pipe can be obviously improved due to the arrangement of the elastic wires.

Usually, the cross section of guiding gutter can be square, and the external diameter of elasticity stay tube is roughly imitative (can be the same or slightly bigger) with the height of guiding gutter to play the supporting role to the geotechnological cloth layer that is located its top better when in actual use, simultaneously, leaves effective clearance between the inner wall of elasticity stay tube and guiding gutter, guarantees the mobility of water.

The water collecting channel can be an annular water collecting pipe arranged on the inner side of the bottom of the cofferdam, the annular water collecting pipe surrounds the periphery of the water seepage flow guide layer, the outer side and the bottom side of the annular water collecting pipe are respectively sealed with the inner wall of the cofferdam and the base surface of the planting area (for example, waterproof sealant is coated/filled between the annular water collecting pipe and the inner wall of the cofferdam and the base surface of the planting area to realize sealing and bonding), a gap along the generatrix direction (the direction parallel to the axis) is formed in the pipe wall of the inner side of the annular water collecting pipe, and the edges of the water guide layer and the geotechnical cloth layer in the adjacent water seepage flow guide layer extend into the annular water collecting pipe through the corresponding gaps.

The gap should be opened in the well upper portion of annular collector pipe for the tube hole that is located the gap below has sufficient water and gathers and flow space, and the lower edge of gap should not be higher than the normal height (the height when not influenced by annular collector pipe) of the water guide layer bottom surface of corresponding position to do benefit to the rivers in the guiding gutter and flow into annular collector groove.

The annular water collecting pipe can be a round pipe, a square pipe and the like.

Corresponding concave structures can be arranged at corresponding parts of the inner wall of the cofferdam, and part or all of the annular water collecting pipes are embedded into the concave structures.

The annular header pipe may also be a tubular structure prepared on the cofferdam. For example, an annular groove for forming a pipe cavity (pipe hole) of an annular water collecting pipe is formed in the inner wall of the cofferdam, most of the notch of the annular groove is sealed by a plate, a strip-shaped gap for extending into the water guide layer and the geotextile layer is reserved, and the corresponding edge parts of the water guide layer and the geotextile layer extend into the sealed groove from the gap.

The water collecting channel can be an annular water collecting tank arranged at the lower part of the inner wall of the cofferdam, the annular water collecting tank is a groove which is inwards concave towards the cofferdam from the inner wall (inner surface) of the cofferdam, the notch of the annular water collecting tank is positioned at the inner wall of the cofferdam, the width (the size of the notch in the vertical direction) of the notch of the annular water collecting tank is greater than the height (the depth of the called water guiding tank, namely the size of the water guiding tank in the vertical direction) of the water guiding tank, the lower edge of the notch of the annular water collecting tank is lower than the tank bottom of the water guiding tank connected with the notch of the annular water collecting tank, the upper edge of the notch of the annular water collecting tank is higher than the notch (the tank top) of the water guiding tank connected with the annular water collecting tank, a water permeable baffle covering (shielding) the notch is arranged on the notch of the annular water collecting tank, and water reserved from the corresponding port of the water guiding tank can automatically flow into the annular water collecting tank through the water permeable baffle.

The water permeable barrier is preferably of a double layer material structure, the inner layer (facing inwards into the tank) being made of a hard wire mesh (e.g. stainless steel wire mesh or plastic grid) and the outer layer being made of a water permeable geotextile or mesh (flexible sheet material in a mesh shape).

The lower groove wall of the annular water collecting groove is preferably provided with a concave structure, for example, in the shape of an inclined plane with a high outer side (the groove opening side of the annular water collecting groove) and a low inner side, or in the shape of a step with a low inner side, so as to facilitate the collection and flow of water.

The inner wall of the annular water collecting tank can be coated with a waterproof material layer according to the waterproof requirement.

The upper and lower edges of the inner layer material (stainless wire net) and the outer layer material (geotextile or mesh cloth) forming the water permeable baffle are preferably bonded on the inner wall of the cofferdam on two sides (upper and lower sides) of the notch of the annular water collecting tank, so that the water permeable baffle can be fixed on the cofferdam and can cover the whole notch of the water collecting tank.

The cofferdam drain pipe can be connected to the aquatic plant culture pond.

The aquatic plant culture pond can be set as a low-level pond (the water level of the pond is lower than the outlet height of the cofferdam drainage pipe, and the practical standard is that the water level is lower than the base level of the roof planting area). For example, it may be located on the ground, or lower adjacent to the roof. When the low-level pond can not be set, the cofferdam drainage pipe can be connected into a lower sand filter with temporary water storage function, water in the cofferdam drainage pipe automatically flows into the sand filter by means of gravity, meanwhile, a cofferdam drainage connecting pipe for connecting the sand filter with the aquatic plant culture pond is arranged, and water in the sand filter is pumped into the aquatic plant culture pond on a roof or other higher positions by a cofferdam drainage pump for connecting the cofferdam drainage connecting pipe. The effective capacity of the water collecting channel (such as an annular water collecting tank or an annular water collecting pipe) can be increased moderately, the cofferdam drainage pump is connected to the cofferdam drainage pipe, and when drainage is needed, the water in the water collecting channel is directly pumped into the aquatic plant growing pond by the cofferdam drainage pump connected with the cofferdam drainage pipe.

In other situations, a sand filter can be arranged to filter the water discharged from the aquatic plant planting pool.

The cofferdam drainage pump can be controlled according to the irrigation condition and the water infiltration and consumption condition of the roof planting area. A sand filter pool water level sensor or a water collecting channel water level sensor can be arranged, and the cofferdam drainage pump is controlled according to the water level height in the sand filter pool or the water collecting tank.

The aquatic plant culture pond can be connected with the sedimentation tank through a culture pond drain pipe (a drain pipe of the aquatic plant culture pond) or a culture pond overflow channel (an overflow channel of the aquatic plant culture pond).

The sedimentation tank can be set as a low-level tank (the water level of the tank is lower than the bottom level of the overflow port of the aquatic plant culture tank). For example, it may be located on the ground, or lower adjacent to the roof. When the device can not be set to a low-level pond, a drainage pump of the culture pond can be arranged on a drainage pipe of the culture pond, and water in the aquatic plant culture pond is pumped into a sedimentation pond arranged on a roof or other higher positions through the drainage pump of the culture pond.

The water level sensor of the aquatic plant culture pond can be arranged, and the control of the drainage pump of the culture pond is carried out according to the water level height in the aquatic plant culture pond.

The sedimentation tank can be connected with the water tank through a sedimentation tank overflow channel (an overflow channel of the sedimentation tank) or a sedimentation tank drain pipe (a drain pipe of the sedimentation tank).

The water tank can be set to be a low-level water tank (the water level of the water tank is lower than the bottom height of the overflow port of the sedimentation tank). For example, it may be located on the ground, or lower adjacent to the roof. When can not set up to low level water tank, can set up the sedimentation tank drain pipe, the overflow water catch bowl or the clear water district of the import intercommunication sedimentation tank of sedimentation tank drain pipe, export access water tank sets up the sedimentation tank drain pump on the sedimentation tank drain pipe, squeezes into the water tank through the overflow water catch bowl of sedimentation tank or the clear water in the sedimentation tank through the sedimentation tank drain pump.

Can set up sedimentation tank level sensor, carry out the control of sedimentation tank drainage pump according to the water level height of sedimentation tank.

The water tank can be provided with a water tank drain pipe, the water tank drain pipe is connected with a water supply port of the irrigation system and is also connected or not connected with an external drainage pipeline, and a water replenishing pipe is connected into the water tank.

The water collected in the water tank can thus be used as a source of water for the irrigation system (irrigation water), which is mixed with the recovered water as a result of the water supply pipe connected to the water tank.

Can set up water tank level sensor, when the water tank water level exceeded the water tank water level upper limit of settlement, start the water tank drain pump and pass through the water tank drain pipe with water and discharge, get into other retaining or water facilities through outer discharge pipe way. The outer drainage pipeline can be connected with other water storage or water utilization facilities and the like according to actual conditions, valves can be arranged on related pipelines according to the prior art, and the water outlet flow direction of the water tank drainage pipe is controlled by opening and closing the related valves.

The manner in which the respective water level sensors are arranged and the manner in which the associated pump control is carried out in dependence on the water level signals of the respective water level sensors may be in accordance with the prior art.

Because the water that the water tank was collected mainly for roof planting district waters the exudation of watering, under the condition that does not have outside rainwater, entire system need frequently moisturizing, as long as the moisturizing volume is suitable and each link operation is normal, the excessive water that need arrange outward can not appear in the water tank usually.

The utility model has the advantages that:

1) the utility model can utilize the existing automatic control technology to realize the automatic irrigation and automatic drainage of roof gardens (such as a roof planting area), when the water tank level sensor detects the water level in the water tank (reaching or exceeding the water level of the set upper limit), the water tank drainage pump is controlled to be started, the water tank drainage pump can be used as an irrigation water pump, the flow direction of the water tank drainage is controlled through a relevant valve, the irrigation system can be generally flowed into for automatically irrigating the plants planted in the cofferdam, when the water is accumulated in the cofferdam (caused by rainfall or excessive irrigation), the accumulated water is automatically discharged into the aquatic plant culture pond through the cofferdam drainage pipe or pumped into the sedimentation tank through the cofferdam drainage pump, when the water level in the aquatic plant culture pond reaches the overflow outlet or exceeds the height of the set upper limit, the water is automatically flowed into the sedimentation tank through sand filtration or is not pumped into the sedimentation tank through the drainage pump of the planting pond for sedimentation, when the water level sensor of the sedimentation tank detects the water level (reaching or exceeding the water level of a set upper limit) in the sedimentation tank, controlling the drainage pump of the sedimentation tank to start, sending the settled clean water into the water tank, and using the settled clean water for irrigating the plants in the cofferdam again, thereby realizing the cyclic utilization of water resources;

2) the waterproof coiled material has both a waterproof function and a drainage guide function, accumulated water on the waterproof coiled material can be quickly guided to be drained through the water chute, and the phenomenon that the growth of plants is influenced or the accumulated water overflows from the cofferdam due to excessive accumulated water in the cofferdam is avoided;

3) the water guide layer of the waterproof roll can be made of high polymer materials with good hydrophobicity and temperature resistance, so that the waterproof (anti-seepage) effect of the waterproof roll can be effectively improved, and the waterproof roll is resistant to high and low temperatures and wide in application range; the cushion layer and the geomembrane layer both have waterproof performance, so that the waterproof effect of the waterproof coiled material can be further improved, the water guide layer can be supported and protected, and the water guide layer is prevented from being abraded or scratched; the arrangement of the geotechnical cloth layer can realize the separation of the water guide layer and the planting soil above the waterproof coiled material, not only can effectively prevent the planting soil from falling into the water chute to cause the blockage of the water chute, but also can make water in the planting soil permeate into the water chute by utilizing the water permeability of the planting soil and discharge the water from the cofferdam under the guidance of the water chute and the water collecting channel;

4) the elastic supporting tube in the water chute can support a geotextile layer above the water chute, so that the situation that the geotextile layer is excessively deformed to block the water chute when the pressure of planting soil above the waterproof coiled material is too high is avoided, and the arrangement of the water collecting holes on the elastic supporting tube enables water penetrating through the geotextile layer to enter the elastic supporting tube and be discharged along the elastic supporting tube, so that the water containing amount of the water chute is hardly influenced by the arrangement of the elastic supporting tube, and the water chute is ensured to be kept smooth all the time;

5) the arrangement of the annular water collecting grooves and the water permeable baffle plates thereof can ensure that drainage guided by the water guide grooves is converged in the water collecting channel and flows out of the cofferdam drainage pipe, and can ensure that water in planting soil can directly permeate into the annular water collecting grooves without passing through the water guide grooves and flows out of the cofferdam drainage pipe under the condition that relatively more water is accumulated in the cofferdam in heavy rain due to large precipitation, thereby improving the drainage capacity of the space in the cofferdam and ensuring the drainage effect of a roof garden. Under the condition of not considering rainwater (for example, a ceiling is arranged), the annular water collecting pipe provides a water collecting channel which is more fine and convenient to arrange, and the water passes through the filtering action of the geotextile during the permeation process, so that the impurity content and particularly the impurity content with larger grain size are effectively reduced, and the fault is favorably reduced.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the waterproof roll of the present invention;

fig. 3 is a schematic cross-sectional structure of an embodiment of the cofferdam of the present invention;

fig. 4 is a schematic view of the structure of the annular water collecting pipe and the related connection structure of the present invention.

Detailed Description

Referring to fig. 1, 2, 3 and 4, the utility model discloses a roof garden water supply and drainage equipment device, which comprises a cofferdam 1, a sand filter 2, a sedimentation tank 3 and a water tank 4, wherein the space in the cofferdam is used as a planting area of the soil plants, a waterproof coiled material 5 is laid at the bottom in the cofferdam, a planting soil layer is laid on the waterproof coiled material, the soil plants are planted on the planting soil layer, a cofferdam drain pipe 101 is arranged at the lower part of the weir wall of the cofferdam and used for discharging accumulated water in the cofferdam, the cofferdam drain pipe is connected with the water inlet of the sand filter, the sand filter is used for filtering incoming water, the water outlet of the sand filter is connected with the water inlet of the sedimentation tank and used for standing and precipitating the incoming water, the water outlet of the sedimentation tank is connected with the circulating water inlet of the water tank through a sedimentation tank drain pipe 6 and used for feeding the clear water after standing and precipitating into the water tank, the sedimentation tank is characterized in that a sedimentation tank drainage pump 7 is arranged on the sedimentation tank drainage pipe, a water outlet of the water tank is connected with a watering pipe (a water pipe of a watering system) 8, the watering pipe penetrates through the weir wall of the cofferdam and extends into the cofferdam or extends into the cofferdam from the upper part of the cofferdam and is used for watering the plants in the cofferdam, a watering pump 9 is arranged on the watering pipe, and the water tank drainage pump can be used as or regarded as the watering pump 9.

The waterproof roll preferably comprises a cushion layer 501, a geomembrane layer 502, a water guide layer 503 and a geotextile layer 504 from bottom to top in sequence, each layer is bonded or integrated by hot pressing, a water guide groove 505 is arranged on the top surface of the water guide layer along the length direction of the waterproof roll, the water guide groove is a through groove, ports are arranged at two ends of the water guide groove, and in practical application, the water guide groove is communicated with the cofferdam drainage pipe through a water collecting channel. So set up, make waterproofing membrane both has waterproof function, has drainage guide function again, through the guiding gutter can guide fast ponding discharge on the waterproofing membrane avoids the excessive vegetation of ponding in the cofferdam or follow spill over in the cofferdam. The water guide layer is preferably made of a high-molecular organic material, has good hydrophobicity and temperature resistance, can effectively improve the waterproof effect of the waterproof roll, enables the waterproof roll to resist high and low temperatures, and has a wide application range. The bed course with geomembrane all has waterproof performance, both can further improve waterproofing membrane's water-proof coiled material, can be right again the water guide layer plays support and guard action, avoids water guide layer wearing and tearing or fish tail. The bed course can be thicker usually to eliminate the damage and the influence of local tiny particle etc. of base face to each layer of top, improve the plane degree of water guide layer and guiding gutter, also prevent simultaneously to the destruction of geotechnological rete, guarantee the water proof performance of geotechnological rete, the setting on geotechnological cloth layer can be realized the water guide layer with the separation of the planting soil of waterproofing membrane top both can effectively prevent to plant soil and fall into cause in the guiding gutter blocks up, can utilize the infiltration of the water permeability messenger water content in the planting soil again the guiding of guiding gutter is followed discharge in the cofferdam.

The geomembrane layer comprises one layer or a plurality of layers of geomembranes, and when the plurality of layers of geomembranes are adopted, the plurality of layers of geomembranes are overlapped up and down in sequence. The geotextile layer comprises one layer or a plurality of layers of geotextile, and when the plurality of layers of geotextile are adopted, the plurality of layers of geotextile are overlapped up and down in sequence.

An elastic supporting pipe 506 is preferably arranged in the water guide groove, and water collecting holes penetrating through the elastic supporting pipe from inside to outside are densely distributed on the elastic supporting pipe. The setting of elasticity stay tube can be right the geotechnological cloth layer of guiding gutter top plays the supporting role, avoids working as the planting soil pressure of waterproofing membrane top leads to when too big geotechnological cloth layer warp and blocks up the guiding gutter, the setting of the water collecting hole on the elasticity stay tube makes and oozes the water on geotechnological cloth layer can get into in the elasticity stay tube, follow the elasticity stay tube is discharged, makes the setting of elasticity stay tube does not influence hardly the water yield that holds of guiding gutter guarantees the guiding gutter keeps unobstructed all the time.

The length of the elastic supporting tube is preferably the same as that of the water chute, that is, two ends of the elastic supporting tube are respectively flush with the end parts of the waterproof rolls on the corresponding sides.

Preferably, a gap is reserved between the outer wall of the elastic supporting tube and the side wall of the water chute, so that the space in the water chute except the tube inner space of the elastic supporting tube still has certain water drainage capacity. The outer diameter of the elastic supporting tube is preferably equal to the depth (or called height) of the water guide groove, so that the elastic supporting tube cannot protrude upwards or shrink downwards from the top surface of the water guide layer, the leveling of the geotextile layer is facilitated, the top surface of the waterproof roll is planar or approximately planar, and the construction and curling are facilitated.

The elastic supporting tube is preferably a silicon rubber hose, has the characteristics of temperature resistance and weather resistance, enables the waterproof roll to be suitable for long-term use in severe environment, has certain deformation capacity, and is convenient to curl with the main body of the waterproof roll. The elastic supporting tube can be fixed in the water chute by bonding or other suitable methods.

The number of the water guide grooves is preferably a plurality, and the water guide grooves are uniformly distributed on the water guide layer along the width direction of the water guide layer at equal intervals so as to improve the drainage capacity.

The inner lower part of the weir wall of the cofferdam is preferably provided with an annular catchment channel 102.

The water collecting channel can adopt the form of an annular water collecting tank, the longitudinal section of the annular water collecting tank is rectangular, the upper tank wall (top wall) of the annular water collecting tank is higher than the top surface of the waterproof coiled material, the lower tank wall (bottom wall) of the annular water collecting tank is lower than the bottom of the water guiding tank, the annular water collecting tank faces towards an opening in the cofferdam (namely, an annular notch on the inner wall of the cofferdam) and is coated with geotextile, a stainless steel net is preferably arranged on the inner side of the geotextile to form a support for the geotextile, the geotextile is arranged to prevent planting soil from entering the annular water collecting tank, and the cofferdam water discharging pipe is communicated with the annular water collecting tank. By the arrangement, the drained water guided by the water guide grooves can flow out of the cofferdam drainage pipe after converging in the annular water collecting groove. In rainy seasons, when the precipitation is large, the accumulated water in the cofferdam is relatively large, the water in the planting soil can directly permeate into the annular water collecting tank without passing through the water guide groove and then flows out of the cofferdam drainage pipe, so that the drainage capacity of the space in the cofferdam is improved, and the drainage effect of the roof garden is ensured.

The water collecting channel can also take the form of an annular water collecting pipe 13 which surrounds the periphery of the water seepage and flow guiding layer and the outer side and the bottom side of which are sealed with the inner wall of the cofferdam 1 and the base surface of the planting area respectively. For example, waterproof sealant is coated/filled between the annular water collecting pipe and the inner wall of the cofferdam and the base surface of the planting area to form the sealing structures 14 and 15 of the corresponding parts, the pipe wall of the inner side of the sealing structure is provided with a gap along the generatrix direction (the direction parallel to the axis), and the edges of the water guide layer 505 (including the elastic support pipe therein if any) and the geotextile layer 504 in the adjacent water seepage guide layer extend into the annular water collecting pipe through the corresponding gaps.

Can follow waterproofing membrane's bottom surface during the construction and decide depthkeeping cut off bed course and geotechnological rete according to required width, the bed course and the geotechnological rete edge part that will cut off tear, the water guide layer and the geotechnological cloth layer that will expose insert the gap on the annular collector pipe, perhaps tear the bonding between the bed course and the pouring layer at edge part, with the bed course and the geotechnological rete shrivelled clearance between annular collector pipe and base face at edge part, insert the gap on the annular collector pipe with water guide layer and geotechnological cloth layer, according to needs coating or filling waterproof sealing binder in the work progress.

Due to the action of gravity, the edges of the water guide layer and the geotextile layer extending into the annular water collecting pipe are slightly bent downwards, so that water can flow into the annular water collecting tank from the water guide tank.

The downstream of the drainage of the cofferdam is an aquatic plant culture pond 10 for culturing aquatic plants, and at the moment, the cofferdam drainage pipe is connected with the water inlet of the aquatic plant culture pond.

The downstream of the aquatic plant culture pond is a sand filter, and a water outlet of the aquatic plant culture pond is connected with a water inlet of the sand filter.

The downstream of the sand filter is a sedimentation tank, and the water outlet of the sand filter is connected with the water inlet of the sedimentation tank.

According to actual needs, the sand filter can be omitted.

The water flow between the tanks is preferably by overflow.

The height of the water inlet of the aquatic plant culture pond is higher than that of the water outlet of the aquatic plant culture pond, the water inlet of the aquatic plant culture pond is usually arranged at the upper part of the pond wall, and the water outlet of the aquatic plant culture pond is usually arranged at the middle part of the pond wall. The sand filter pond has been laid husky layer in, the water inlet in husky filter pond is located the top of husky layer, is located the upper portion of pool wall usually, the delivery port in husky filter pond is located husky layer, preferably is located the bottom in husky filter pond, the delivery port side on the inner wall in husky filter pond has the geotechnological cloth, avoids sand grain to get into through the delivery port the sedimentation tank. The water inlet of the sedimentation tank is usually arranged at the upper part of the tank wall, and the water outlet is usually arranged at the middle part of the tank wall.

Under normal conditions, the height of the cofferdam drain pipe is not lower than the height of the water inlet of the aquatic plant culture pond, the height of the water outlet of the aquatic plant culture pond is not lower than the height of the water inlet of the sand filter pond, and the height of the water outlet of the sand filter pond is not lower than the height of the water inlet of the sedimentation pond, so that the drainage in the cofferdam can automatically flow into the aquatic plant culture pond, when the water in the aquatic plant culture pond reaches the height of the water outlet of the aquatic plant culture pond, the water in the aquatic plant culture pond can automatically flow into the sand filter pond, and the water filtered by a sand layer in the sand filter pond can automatically flow into the sedimentation pond.

In practical application, the cofferdam can be arranged on a higher roof, the aquatic plant culture pond can be arranged on a lower roof, and the sand filter and the sedimentation tank can be arranged on the ground. The cofferdam and the aquatic plant culture pond can also be arranged on the same roof or the roof at the same height, a water tank is arranged between the cofferdam and the aquatic plant culture pond and is lower than the bottom surfaces of the cofferdam and the aquatic plant culture pond, so that the drainage in the cofferdam is firstly drained into the water tank, then the water in the water tank is sent into the aquatic plant culture pond through a water pump, and the on-off of the water pump can be controlled through a water level sensor arranged in the water tank.

The inner wall of the sedimentation tank is preferably provided with a sedimentation tank water level sensor, the setting height of the sedimentation tank water level sensor is higher than the height of a water outlet of the sedimentation tank and lower than the height of a water inlet of the sedimentation tank, the signal output of the sedimentation tank water level sensor is connected to the control end of the sedimentation tank drainage pump, and when the water level in the sedimentation tank reaches the height of the sedimentation tank water level sensor, the sedimentation tank water level sensor controls the starting of the sedimentation tank drainage pump to send the supernatant water in the sedimentation tank into the water tank. The drainage pump of the sedimentation tank can be set to be automatically closed in a delayed manner according to the prior art, or the drainage pump of the sedimentation tank is provided with two water level sensors, one is arranged at a high position, the other is arranged at a low position, when the water level sensor of the sedimentation tank at the high position detects a water level signal, the drainage pump of the sedimentation tank is controlled to be started, and when the water level sensor of the sedimentation tank at the low position cannot detect the water level signal, the drainage pump of the sedimentation tank is controlled to be stopped.

The bottom of the sedimentation tank can be provided with a water outlet which is connected with a municipal drainage pipe network through a drainage pipe 11, and the drainage pipe is provided with a drainage valve for discharging part of water in the sedimentation tank when the precipitation is large in rainy season and the total water amount in the water supply and drainage equipment device of the roof garden exceeds the self circulation treatment capacity.

The inner wall of the water tank is preferably provided with a water tank level sensor, the setting height of the water tank level sensor is higher than the height of a water outlet of the water tank and lower than the height of a circulating water inlet of the water tank, the signal output of the water tank level sensor is connected to the control end of a water discharge pump of the water tank, and when the water level in the water tank reaches the height of the water tank level sensor, the water tank level sensor controls the water discharge pump of the water tank to be started, so that the water in the water tank is sent into the cofferdam through the watering pipe to water plants. The draining pump of the water tank can be set to be automatically closed in a delayed manner according to the prior art, or the draining pump of the water tank is provided with two water level sensors, one is arranged at a high position and the other is arranged at a low position, when the water level sensor of the water tank at the high position detects a water level signal, the draining pump of the water tank is controlled to be started, and when the water level sensor of the water tank at the low position cannot detect the water level signal, the draining pump of the water tank is controlled to be stopped.

The top of water tank can be equipped with the water inlet, the water inlet passes through inlet tube 12 and connects municipal water supply pipe network, be equipped with inlet valve on the inlet tube for when the less rainy season precipitation is less and the total water yield in the roof garden water supply and drainage equipment device can't reach automatic cycle and water the plant in the cofferdam, to retaining in the water tank.

The irrigation water pipes in the cofferdam are preferably provided with a plurality of irrigation nozzles which are uniformly distributed in the cofferdam, or the cofferdam is internally provided with a plurality of irrigation branch pipes communicated with the irrigation water pipes, each irrigation branch pipe is provided with one or more irrigation nozzles, and all the irrigation nozzles are uniformly distributed in the cofferdam so as to realize uniform irrigation of plants in the cofferdam.

The utility model discloses a so-called connection is according to prior art adoption suitable pipe connection or can realize the arbitrary connected mode that relevant water was carried, for example when overflow delivery port is located the top in low reaches pond, falls into water entering low reaches pond of overflow delivery port, also is effectual connected mode.

And control valves can be arranged on the connecting pipelines according to actual needs in the prior art.

The preferred and optional technical means disclosed in the present invention, except for the specific description and the further limitation that one preferred or optional technical means is another technical means, can be combined at will to form a plurality of different technical solutions.

Claims (10)

1. The utility model provides a roof garden plumbing installation, is equipped with roof planting district, its characterized in that roof planting district is equipped with the cofferdam, be equipped with the infiltration water conservancy diversion layer that mainly forms with waterproofing membrane laying on the base face in roof planting district, waterproofing membrane is equipped with bed course, geotechnological rete, water guide layer and geotechnological cloth layer from the bottom to the top in proper order, bed course, geotechnological rete, water guide layer and geotechnological cloth layer bond in proper order, be equipped with the guiding gutter that extends along waterproofing membrane length direction on the top surface of water guide layer, the periphery of infiltration water guide layer is equipped with the water collecting channel, the both ends port of guiding gutter communicates the water collecting channel at respective corresponding position respectively, the bottom of cofferdam is equipped with the cofferdam drain pipe, the import of cofferdam drain pipe communicates the water collecting channel.

2. A water supply and sewerage installation as claimed in claim 1, wherein the gutter is provided with or without an elastic support tube, and the wall of the tube is provided with a plurality of water collection holes extending through the wall.

3. The water supply and drainage facility apparatus for roof garden as claimed in claim 1 or 2, wherein said water collecting channel is an annular water collecting pipe provided at the inner side of the bottom of the cofferdam, said annular water collecting pipe surrounds the periphery of said seeping water guiding layer, the outer side and the bottom side of said annular water collecting pipe are sealed with the inner wall of said cofferdam and the base surface of said planting area, respectively, the pipe wall of the inner side of said annular water collecting pipe is provided with a slit along the generatrix direction thereof, and the edges of the water guiding layer and the geotextile layer in the adjacent seeping water guiding layer extend into said annular water collecting pipe through the corresponding slit.

4. The water supply and drainage equipment device for roof garden as claimed in claim 1 or 2, wherein said water collection channel is an annular water collection tank formed on the lower portion of the inner wall of said cofferdam, said annular water collection tank is a groove recessed inwardly from the inner wall of the cofferdam toward the cofferdam, the width of the notch is larger than the height of the water guide tank, the lower edge of the notch is lower than the bottom of the water guide tank connected thereto, the upper edge of the notch is higher than the notch of the water guide tank connected thereto, and a water-permeable baffle plate covering the notch is formed on the notch.

5. A water supply and sewerage installation according to claim 4 wherein the water permeable barrier is of a double layer construction, the inner layer being a rigid mesh and the outer layer being a water permeable geotextile or scrim.

6. A water supply and sewerage installation for roof gardens according to claim 5 wherein the inner and outer layers of material forming said water permeable barrier have their upper and lower edges bonded to the inner wall of the cofferdam on either side of the rebate of the annular collection gutter.

7. A water supply and drainage facility installation for a roof garden as claimed in claim 1 or claim 2 wherein the cofferdam drainage pipe is connected to an aquatic plant growing pond.

8. The roof garden plumbing installation of claim 7, wherein the aquatic plant growing tank is connected to the settling tank by a growing tank drain or a growing tank overflow channel.

9. A roof garden plumbing installation according to claim 8, wherein the sedimentation basin is connected to the tank by a sedimentation basin overflow channel or a sedimentation basin drain.

10. A roof garden plumbing installation according to claim 9, wherein the tank is provided with a tank drain which is connected to a water supply of the watering system and which may or may not be connected to an external drainage pipe, a water refill pipe being connected to the tank.

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