130results about How to "Reduce drain pressure" patented technology

The flush toilet has a waste receipt surface section (10) of a bowl section (1) formed continuously integrally with an inner rim wall surface section (15) of the rim portion disposed at a peripheral edge of an upper opening (13) of the bowl section (1) as a curved surface; and the inner rim wall surface section (15) of the rim portion acts as a flush water passage (16) of the bowl section. The flush water passage (16) of the bowl section is further configured such that the inner rim wall surface section (15) of the rim portion is shaped in an overhanging form inclining so as to hang over inside of the bowl section (1). The flush toilet of this configuration can be cleaned with ease and kept clean in sanitation.

The invention discloses a functional rainwater garden suitable for the interior of an urban community grassy area in Shanghai. The functional rainwater garden suitable for the interior of urban community grassy area in Shanghai comprises pretreatment facilities, a water storage layer, water seepage facilities and an overflow facilities, wherein the pretreatment facilities comprise a ring-shaped side slope and gravels; the ring-shaped side slope is positioned on the periphery of the functional rainwater garden; the gravels are covered on the ring-shaped side slope; the water storage layer is a space formed by the ring-shaped side slope and the bottom of the functional rainwater garden in a horizontally encircling manner; the water seepage facilities are positioned at the bottom of the functional rainwater garden; the overflow facilities comprise an overflow pipe penetrating through the thickness direction of the water storage layer and an overflow drain pipe positioned at the bottom of the functional rainwater garden. The functional rainwater garden suitable for the interior of urban community grassy area in Shanghai provided by the invention can decrease the rainfall runoff peak value, purify water quality, supplement groundwater, reduce pressure on municipal water draining, improve microclimate and lift the livable degree of Shanghai.

The invention discloses a full-automatic rainwater harvesting irrigation apparatus and an operation method of the same and relates to the technical field of rainwater collection and utilization. The full-automatic rainwater harvesting irrigation apparatus comprises a solar energy photovoltaic power generation system, a rainwater collecting system, an irrigating system and an intelligent control system, wherein solar energy is directly converted into electricity through a solar energy panel by the solar energy photovoltaic power generation system, so energy can be provided for apparatus work; the rainwater collecting system collects rainwater according to an atmosphere raining condition; the irrigating system forms relative irrigation water-supply sources according to soil humidity and water amount required by the plants; and the intelligent control system receives signals of each sensor to control the other systems to work in a coordinate way. By the use of the method and equipment rainwater can be automatically collected and plants can be automatically irrigated; and the method and equipment have wide application range.

The invention discloses a rainwater garden system for community rainwater flow diversion, peak clipping and ecological purification. The rainwater garden system comprises a community roof rainwater flowing-through facility, a reverse U-shaped buffer flow division pipe, a green land rainwater garden facility and a rainwater well, wherein the community roof rainwater flowing-through facility is connected with the green land rainwater garden facility through two paths; one path is the direct connection with the green land rainwater garden facility, and the other path is the connection with the green land rainwater garden facility through the reverse U-shaped buffer flow division pipe; and the green land rainwater garden facility is also connected with the rainwater well. The reverse U-shaped buffer flow division pipe is used, and a water storage layer, a covering layer, a planting layer, a transition layer, a filling material layer, a water discharge layer and matched pipelines which are sequentially and downwards provided by the downward green land rainwater garden facility from the ground are used, so that the rainwater garden system has the effects of early-period rainwater processing, rainfall runoff flow division, peak clipping and purification regulation and control.

The invention discloses a vegetation bag ecological slope protection construction method and a vegetation bag rainwater treatment system. The vegetation bag ecological slope protection construction method comprises the following steps: (a) performing construction preparation; (b) measuring and lining; (c) excavating a foundation pit; (d) pouring concrete to obtain a slope foundation; (e) performing primary rainwater treatment system construction; (f) performing whole slope construction; (g) manufacturing beam grillages; (h) performing secondary rainwater treatment system construction; (i) stacking vegetation bags; (j) planting plants. According to a vegetation bag ecological slope protection system, plant growth substrates are fixed to the interiors of vegetation bags, so that a side slope is more stable and has erosion resistance by utilizing the anchoring effect of the roots of plants; the slope protection foundation which is erosion-resistant, firm and breathable, and suitable for the growth of the plants is formed by combining the characteristics of the beam grillages and the vegetation bags. Meanwhile, the rainwater treatment system is added, so that rainwater is stored in a rainy season and can be used for irrigating the plants in a dry season; on one hand, the slope protection pressure is relieved, and the water and soil loss is further prevented; on the other hand, the rainwater treatment system is favorable to the growth of the plants.

The invention provides a rainwater storage irrigation system for green belts under viaducts. The rainwater storage irrigation system comprises a water storage tank, a fresh rain primary filtration and separation device, a photovoltaic pump, an energy supply device, a spray head and a microcomputer centralized control box, wherein the fresh rain primary filtration and separation device comprises a filter screen, a base, a fresh rain separation water tank, a drain pipe and a first overflow pipe; the filter screen, the base and the fresh rain separation water tank are assembled in sequence from top to bottom; the first overflow pipe is communicated with the water storage tank; the photovoltaic pump is arranged in the water storage tank; the energy supply device is used for providing power for the photovoltaic pump, and comprises a solar photovoltaic plate and an energy storage inverter; the spray head is connected with the photovoltaic pump; and the microcomputer centralized control cabinet is in signal connection with the photovoltaic pump. The rainwater storage irrigation system provided by the invention is capable of removing massive harmful substances in the rainwater so as to prevent harmful substances from adversely influencing the growth of green plants, and sufficiently utilizing the rainwater resource and the solar energy so as to achieve energy conservation and environment protection functions; and moreover, the rainwater storage irrigation system is automatic in the process from primary filtration and separation to rainwater storage to spray irrigation and flood irrigation, so that the labor cost is reduced to the greatest extent and the work efficiency is improved.

The invention relates to a water-harvesting type roof rainwater garden. The water-harvesting type roof rainwater garden comprises an outdoor greening system and a rainwater circulating system, wherein the outdoor greening system comprises a roof vegetation layer, a sandy soil layer, a grit layer, a geotechnical cloth layer, a crushed stone cushion layer, a gravel layer, a barrier layer, a secondary filter layer and a rammed earth layer from top to bottom; the rainwater circulating system comprises a water storage tank, a water purifier, a water pump, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a soil humidity sensor, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a PLC (programmable logic controller). According to the water-harvesting type roof rainwater garden, the problem about drainage and filtration of rainwater are solved, a graceful landscape environment space is created, and the rainwater is collected, purified and recycled perfectly.

The invention discloses an ecological water permeable pavement. The ecological water permeable pavement comprises a water permeable surface layer, a plain water permeable concrete base layer and a broken stone cushion layer which are distributed in sequence from top to bottom, wherein the water permeable surface layer is made from a water permeable concrete mixture. The ecological water permeable pavement allows rainwater to infiltrate back to underground through original runoffs on the ground, underground water can be effectively restored and supplemented, underground ecological system balance is maintained, and the rainwater directly infiltrates into soil at the lower part through water permeable runoffs of the water permeable pavement, so that water discharge pressure of an urban pipeline network is reduced while the rainwater is filtered and purified by a soil layer in an infiltration process, and pollution of natural water such as rivers, lakes and seas due to pavement water is reduced; and the water permeable pavement adopts a porous structure, can effectively absorb all kinds of noise of automobiles, motorcycles and environment outside traffic, effectively ameliorates urban noise pollution and is ecological and environment-friendly.

The invention discloses a method for reducing water on urban streets which builds rainwater accumulation devices in residential quarters or other public areas such as squares, parks and grassy areas without affecting the traffic, wherein the rainwater accumulation devices are communicated with urban sewerage backbone network through drainage branch pipes with drainage flow regulating devices. When it rains, the rainwater on areas except the urban streets firstly flows in the rainwater accumulation devices, then water in the rainwater accumulation devices is drained to the urban sewerage backbone network designedly and organically according to the flow set by the drainage flow regulating devices to outflow. The constant flow organically drainage is carried out according to different zones and different time intervals along the rainwater accumulation devices, the rainwater branch pipes and the backbone pipes so as to solve the conflict that the drainage capacities of the drainage backbone pipes and river channels are not enough as rainwater is drained intensively in short time, and reduce the influence of standing water to the work and life of people.

The invention discloses a greening irrigation system for sponge cities. The greening irrigation system comprises a water collecting device, a priming pump device, an aeration device and a greening device, wherein the water collecting device comprises a water collecting pool, a water collector and a purification integrated machine; the priming pump device comprises water feed pumps connected with pump water discharge pipes, the pump water discharge pipes are connected with the aeration device which is connected with a water storage tank, and the water storage tank is connected with water storage tank discharge pipes which are connected with the greening device. The construction method comprises steps as follows: (1), excavating foundation pits; (b), building the water collecting pool, an aeration tank and the water storage tank; (c), pretreating a foundation where ecological greening insert blocks are to be laid; (d), laying the ecological greening insert blocks; (e), planting green plants. According to the system, urban rainwater is collected and treated by the water collecting device, the collected rainwater is purified, put into secondary use and applied to irrigation of the greening device, so that not only is the waterlogging phenomenon of the road surface prevented effectively, but also water resource waste can be reduced through rainwater collection.

The invention discloses a comprehensive water managing method in an underground mining stage of open pit into underground mining. The method comprises the steps of building a flood intercepting trench (13) outside an underground mining moving band range line (10), mounting a lower shaft pump station (3) inside an underground mining horizontal transportation lane (7) at the bottom of the underground mining lift shaft (1), at least adding an upper shaft pump station (2) inside the underground mining horizontal transportation lane (7) at the upper portion of the underground mining lift shaft (1), establishing a drainage opening (5) at the bottom of an open pit slope, and building an overflow well (4) in the underground mining horizontal transportation lane (7) arranged with the lower shaft pump station (3). According to the comprehensive water managing method in the underground mining stage of open pit into underground mining, multi-pronged comprehensive measures of severing, prevention, drainage, dredging and storage are adopted, water disasters in the underground mining stage of the open pit into underground mining can be effectively solved, and the method can be applied widely to water managing in the underground mining stage of the open pit into underground mining in industries of ferrous, non-ferrous, coal, chemical engineering and the like.

The invention discloses a cooling water storage box type pavement structure. The cooling water storage box type pavement structure comprises a pavement layer meeting the using requirements of a load of a road, wherein the pavement layer is provided with a water storage space, and the water storage space is communicated with a rainwater collection and drainage system. As the cooling water storage box type pavement structure comprises the pavement layer meeting the using requirements of the load of the road, the cooling water storage box type pavement structure can achieve the functions of vehicle driving, people walking, pipeline laying and the like; in addition, as the pavement layer is provided with the water storage space, a heat island effect of a city can be slowed down, the instantaneous rainstorm of the city can be stored, a water storage space of the city is increased, rainwater can be collected as far as possible, the waste of the rainwater is reduced, and the water can be used for watering a roadside green belt and the like nearby.

The invention provides a rainwater recycling system for a lawn. The system is composed of turfs, white gravels, soil, a filter layer, a concrete cover plate, rainwater reservoirs, sedimentation tanks, automatic rainwater filters, rainwater recycling reservoirs, a water pump, rainwater recycling auxiliary facilities and the like. Through a series of reasonable layout and construction, the flat and monotonous lawn turns into small hills of different sizes, at the same time, the reservoirs and running water grooves are arranged at the bottoms of small valleys and used for collecting and recycling rainwater, the surface layers of the valley bottoms are covered with a layer of white gravels which are shaped like water, and the whole design is similar to a landscape design which includes water and mountains. Not only the design can enhance the greening effect of a landscape, increase the enjoyment of the lawn, improve the use area of the lawn, be convenient for people to walk on the valley bottoms without trampling the lawn, but also the reasonable utilization and recycling of rainwater are achieved, the water discharge pressure of municipal rainwater pipes is reduced, and the system has a good application value.

The invention discloses an urban road sponge engineering system combining pavement maintenance, and belongs to the technical field of urban road drainage and rainwater utilization. A sidewalk pavement is kept invariable, original structures of the portions under surface layers of a motorway and a non-motorized vehicle lane are retained, the thickness of the motorway and the thickness of the non-motorized vehicle lane are both decreased by 20-40 mm, then a water-permeable surface layer is repaved, the thickness of the water-permeable surface layer is 40-50 mm, and the outer edge of the water-permeable surface layer is next to a water collecting side trench cover plate; water collecting side trenches are arranged along a road flat curb on the outer side of the motorway and a road flat curb between the non-motorized vehicle lane and the sidewalk respectively, and the water collecting side trenches are connected with circular water permeating and storing tanks and square water permeating and storing tanks through oblique collecting pipes and connected with municipal rainwater pipes through overflow pipes. The invention further discloses a construction method of the system. Accordingly, an old urban road pavement is maintained and repaired, an existing sewage system is not changed, the downstream drainage burden is effectively reduced, pollution of initial pavement rainwater pollution to a downstream water body is avoided, and the practicability is achieved.

Provided are an integrated green belt system based on flood drainage and water conservation and a flood drainage and water conservation method. The system comprises a planting soil layer with plants planted, a filter and drainage water conservation system and a waterproof material layer are arranged on the lower portion, the filter and drainage water conservation system is formed by stacking an inward concave sand permeable layer, a sand-gravel material permeable layer and a gravel permeable layer, the waterproof material layer is in an upward protruding arc shape, and gravity water holding and flood draining channel arrays are arranged in the filter and drainage water conservation system and vertically penetrate through the filter and drainage water conservation system. According to the method, the waterproof material layer in the upward protruding arc shape is arranged, water drainage holes are formed in the highest position of the waterproof material layer, the gravel permeable layer in an upward protruding arc shape, the sand-gravel material permeable layer in a downward concave shape, the sand permeable layer and the planting soil layer are laid on the waterproof material layer in sequence, and the gravity holding and draining channel arrays are arranged in the gravel permeable layer, the sand-gravel material permeable layer and the sand permeable layer.

The invention discloses a pavement permeable pavement combined concave greenbelt sponge city structure. The system comprises a rainwater outlet structure, a permeable sidewalk structure and an urban water storage sponge body, the rainwater outlet structure comprises a water collecting well provided with a rainwater grate. An overflow drain pipe with a water inlet at the upper part is arranged in the water collecting well; the water outlet is formed in the water collecting well; a sidewalk seepage pipe is arranged at the inner bottom of the permeable sidewalk structure, an overflow pipe is arranged in the urban water storage sponge body, and the horizontal height of an overflow opening in the overflow pipe is equal to that of the upper end face of an overflow drain pipe and is larger than that of a water outlet in the water collecting well. The utilization rate of the urban water storage sponge body can be increased, rainwater can be drained into a municipal rainwater drainage system through the overflow drainage pipe after the urban water storage sponge body reaches the maximum water storage capacity, and through the horizontal position design of overflow in the urban water storagesponge body, the urban water storage and drainage capacity can be improved, and municipal drainage pressure is reduced.

The invention discloses a nanometer asphalt concrete urban road pavement structure based on a sponge city. The nanometer asphalt concrete urban road pavement structure is characterized in that a roadis separated into a water permeable area and a water non-permeable area along the transverse direction; the water permeable area is positioned between the water non-permeable area and a greening belt;curb is arranged between the water permeable area and the greening belt; the water non-permeable area comprises a soil base layer I, a gravel bedding layer I, a cement stabilized macadam base layer I, a lower surface layer I and an upper surface layer I from bottom to top under a motor vehicle lane; the water permeable area comprises a soil base layer II, a waterproof layer, a water storage layer, a gravel bedding layer II, a cement stabilized macadam base layer II, a lower surface layer II and an upper surface layer II from bottom to top under a non-motor vehicle lane; the water permeable area and the water non-permeable area are separated by an anti-seepage cement box body; an anti-seepage cement blocking plate is arranged under the curb and is used for isolating the water permeable area from the greening belt; a rainwater purifying system is arranged under the greening belt. The nanometer asphalt concrete urban road pavement structure has the advantages that the rainwater drainagespeed of the urban road is improved, the total rainwater drainage amount is increased, a large amount of rainwater is collected and reutilized, and the problems of water accumulation, vehicle track, particle falling and the like on the road pavement are relieved.

The invention provides a continuous coal cutter, wherein a cutting part comprises a cutting motor arranged on a cutting arm, a cutting decelerator and a cutting roller arranged on an output end of the cutting decelerator, a cooling system of the continuous coal cutter is an enclosed cooling system, the cutting part further comprises a chain drive cutting device, the chain drive cutting device comprises a drive sprocket wheel set, a driven sprocket wheel set and a cutter chain, the drive sprocket wheel set is arranged on the output end of the cutting decelerator, and is coaxial with the cutting roller, the driven sprocket set is arranged on the cutting arm, the cutter chain, the drive sprocket wheel set and the driven sprocket wheel set are cooperated by chain drive, and picks are continuously distributed on an external surface of the cutter chain. The chain drive cutting device is arranged on the external side of the output end of the cutting decelerator of the continuous coal cutter. Accordingly, continuous active cutting mode can be implemented on whole cutting width, cutting efficiency can be greatly raised, the chain drive cutting device is suitable for conditions of joint non-development coal or other mineral matters, and an application range is increased.

The invention relates to a community sewage integrated treatment and recycling system. The system comprises a grating, a regulating pond, a horizontal spiral self-cleaning fine particle removal device, an aerobic bioreaction pond water distribution room, an aerobic bioreaction pond, a settling pond, a self-aeration device, an artificial wetland, a rainwater storage pond, a filtering and disinfection device, a sewage storage pond and a system base. Solid suspension in aesthetic environment use water is up to standard through the grating, the regulating pond, the horizontal spiral self-cleaning fine particle removal device and the settling pond arranged in the system, so that the quality of sewage achieves the requirement of the aesthetic environment use water; the aerobic microbial reaction pond and the self-aeration device can achieve the standard of organic matters and nutritional substance indexes, the arranged artificial wetland not only can achieve the purpose of beautifying the community environment to cause aquatic plant and microorganism to continue to deeply treat sewage and rainwater, but also can play a buffering role in raining season to prevent the occurrence of community flood, and thus the occurrence of the community flood can be prevented.

The invention relates to an adjustable gap seal and leakage treatment device belonging to a main shaft seal device of a water turbine in a hydraulic turbine generator unit, especially to an adjustable gap seal and leakage treatment device of a water turbine main shaft in a horizontal hydraulic turbine generator unit. The device mainly includes a fixed type static sealing ring, an adjustable rotating sealing ring, a water-throwing ring fixedly arranged on the rotating sealing ring or a main shaft at outside of the rotating sealing ring, a shield and a water-receiving groove arranged on the shield. The device can control leakage of the main shaft sealing to minimum range, and thoroughly treats the leaked water, so that the leaked water can not enter into a bearing, and the hydraulic turbine generator unit can safely, stably and continuously operate with full load.

The invention discloses a spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants,belonging to the field of rainwater pollution control. The spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants mainly comprises the spiral type low elevation greenbelt and a reverse cone-shaped water retaining filtering wall, wherein the spiral type low elevation greenbelt is composed of a spiral type plant zone and a low elevation greenbelt bottom plant zone; the water retaining filtering wall is composed of 2-3 layers of stone grains made from different materials from outside to inside. The reverse cone-shaped water retaining filtering wall in the spiral type low elevation greenbelt can preliminarily intercept and filter the runoff pollutants seeped from the periphery; in combination of the design for the shape and slope of the spiral type plant zone, under the effect of gravity, the rainwater and the upstream direct surface runoff water entering the low elevation greenbelt all spirally flow and infiltrate, so that the seepage time and the seepage path of the incoming water can be greatly prolonged and the capability of the low elevation greenbelt to reduce the upstream runoff pollutants can be promoted. According to the spiral type low elevation greenbelt, the hydraulic load caused by initial rainwater runoff pollution can be effectively relieved, the downstream water-draining pressure can be reduced, and the spiral type low elevation greenbelt has obvious social, environmental and economic benefits.

The invention discloses a permeable pavement based on a sponge city concept. The permeable pavement comprises traffic lanes and pedestrian ways. The traffic lanes comprise a surface layer, a base layer, a filter isolated layer, a permeable cushion and a subgrade from top to bottom in sequence; the pedestrian ways comprise permeable road surface bricks, a permeable cement concrete layer, a macadambase layer, a filter isolated layer and a base layer from top to bottom in sequence, boundaries between the traffic lanes and the pedestrian ways comprise curbs, permeable cement concrete faces and impermeable cement concrete faces from top to bottom in sequence, wherein the lower ends of the curbs extend to the base layer and the macadam base layer, the lower ends of the impermeable cement concrete faces are aligned with the lower end of the filter isolated layer. The permeable pavement based on sponge city concept has the advantages of that the water storage function of the permeable pavement structure is improved, the drainage pressure of municipal pipe network is relieved, occurrence of city water-logging is reduced and hydrological cycle of urban ecology is promoted.

The invention discloses a sponge engineering system based on an existing urban road and a drainage condition and belongs to the technical field of urban road drainage and rainwater utilization. Road surfaces of a motorized vehicle lane, a non-motorized vehicle lane and a pavement keep unchanged; water collection side ditches are formed in an outer side of the motorized vehicle lane along a road flat teeth part, and a road flat teeth part between the non-motorized vehicle lane and the pavement; gap cover plates cover the water collection side ditches; dredging wells are arranged along the water collection side ditches every 5m to 6m; the water collection side ditches are connected with a round water seepage and storage tank and a square water seepage and storage tank through inclined collection pipes respectively; the water collection side ditches are connected with a municipal rainwater pipe through overflow pipes. The invention further discloses a construction method of the system. By adopting the sponge engineering system and the construction method, an existing drainage system is not changed and burden of downstream drainage is effectively alleviated; pollution to a downstream water body, caused by initial rainwater pollution of the road surface, is avoided; disturbance on the existing rod surface and arbor planting is not caused; the construction is convenient and the road does not need to be blocked; interference to traffic is not caused, water resources are saved and the sponge engineering system and the construction method have promotional value.

The invention relates to a tractor synchronizer gear shifting oil cylinder, a gear shifting method and a tractor. The gear shifting oil cylinder comprises a piston rod, a cylinder body and a positioning piston, the positioning piston can be arranged in the cylinder body in an axial moving mode, and the piston rod is arranged on the cylinder body in a sealed and penetrating mode and can axially move relative to the cylinder body; the positioning piston is of a cylindrical structure, the piston rod is sleeved with the positioning piston, a piston is arranged in the middle of the piston rod, the peripheral side wall of the piston is in sealed connection with the inner side wall of the positioning piston and can axially move relative to the positioning piston, and a cavity of the cylinder body is divided into a first cavity and a second cavity by the piston; and a first oil port and a second oil port are formed in the cylinder body, the first oil port communicates with the first cavity, and the second oil port communicates with the second cavity. The tractor synchronizer gear shifting oil cylinder is high in response speed, high in reliability, compact in structure and low in cost. The piston rod of the gear shifting oil cylinder is arranged in the positioning piston in a sleeved mode, the piston arranged on the piston rod is matched with an inner cavity of the positioning piston, and gear shifting control can be achieved by utilizing the two cavities of the cylinder body to be matched with the two oil ports.

A sponge roof rainwater collecting and using system comprises a roof system, a pipeline system and a water storage system, wherein the pipeline system is connected with the roof system and used for conveying redundant rainwater on the roof system to the water storage system, the water storage system is used for storing the rainwater flowing from the pipeline system, and the pipeline system is connected with the water storage system and uses the rainwater in the water storage system for vegetation irrigation and toilet flushing. The sponge roof rainwater collecting and using system has the remarkable advantages that the roof system effectively collects the rainwater, a vegetation layer preliminarily collects and uses the rainwater and has the filtering effect on the rainwater, and the vegetation layer effectively retain part of the rainwater, reduces rainwater runoff amount, and then reduces the drainage pressure of a rainwater pipe network; coverage of the vegetation layer is increased, the green area can be increased, air is purified, and the indoor temperature of a penthouse can be effectively adjusted.

The invention relates to a water-harvesting type roof rainwater garden. The water-harvesting type roof rainwater garden comprises an outdoor greening system and a rainwater circulating system, wherein the outdoor greening system comprises a roof vegetation layer, a sandy soil layer, a grit layer, a geotechnical cloth layer, a crushed stone cushion layer, a gravel layer, a barrier layer, a secondary filter layer and a rammed earth layer from top to bottom; the rainwater circulating system comprises a water storage tank, a water purifier, a water pump, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a soil humidity sensor, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a PLC (programmable logic controller). According to the water-harvesting type roof rainwater garden, the problem about drainage and filtration of rainwater are solved, a graceful landscape environment space is created, and the rainwater is collected, purified and recycled perfectly.

The invention discloses a flood water storage recycling system for a sponge city and a construction method thereof; the flood water storage recycling system comprises a flood storage pond, a flood recycling pond, a shunt and a purifying device; the flood storage pond is connected with an urban ditch through an open ditch, a trash filtering device is arranged on the open ditch, the bottom end of the flood storage pond is connected with the flood recycling pond through a first draining pipe; a water suction pump is arranged on the first draining pipe; a settling pond is arranged between the flood recycling pond and the urban ditch; the shunt is arranged in the settling pond, and both sides of the shunt are respectively connected with the urban ditch and the flood recycling pond through a water inlet pipe and a water outlet pipe. The construction method includes steps of measurement and sampling, flood storage pond construction, flood recycling pond construction, settling pond construction, purifying device construction, and test running of the flood storage recycling system. The flood water storage recycling system can well prevent flood and effectively recycle flood, thus the system and method improve the utilization rate of water resource, reduce the flood influence on city and avoid urban inland inundation.

The invention provides coal mining equipment and a cooling system of the coal mining equipment. The coal mining equipment comprises a cooling machine set arranged on a coal mining equipment body, a cooling liquid container and a cooled device set. The cooled device set comprises a plurality of cooled parts which are connected in series and / or in parallel through cooling liquid pipelines, the cooled device set, the cooling machine set and the cooling liquid container are connected in series through the cooling liquid pipelines to form a circulation loop, and split-flow valves are arranged on the pipelines among the cooling machine set and the cooled parts. The cooling system of the coal mining equipment adopts a closed circulation system, external influences on cooling liquid are small, therefore, a cooling effect is good, in addition, all the parts can further adjust flow of the cooling liquid through the split-flow valves to adjust cooling temperature, cooling efficiency is improved, and the failure rate of the equipment is lowered. Furthermore, the cooling liquid does not need to be discharged outwards, water discharging pressure of an operational working face is reduced, less hydration of the working surface is achieved, and therefore operational efficiency can be improved.

The invention relates to the technical field of anti-ponding roadbeds, in particular to an anti-ponding reinforced roadbed pavement. The technical problems that the drainage pressure of a cable channel is too large, rainwater cannot be drained in time, the water content of a road surface is high, and rainwater resources cannot be well utilized are solved. In order to solve the technical problems,the reinforced roadbed pavement capable of preventing water accumulation comprises a roadbed structure, drainage structures are fixedly connected to the two sides of the roadbed structure, and permeable pipes are inserted into the opposite sides of the two drainage structures in a penetrating mode; and the sides, departing frame each other, of the two drainage structures are fixedly connected withdrainage pipes communicated with the interiors of the two drainage structure. According to the invention, the roadbed structure is good in overall water permeability, the water guide and seepage functions of the roadbed can be fully played, and water flow can be rapidly guided into the drainage grooves through the water permeable pipes and the drainage holes under the guidance of the flow guide slope; therefore, the drainage groove can effectively intercept and slowly drain rainwater, the drainage pressure of the rainwater pipe network is effectively reduced, and the pavement drainage performance is enhanced.

The invention discloses an intelligent self-control type intercepting well. The intelligent self-control type intercepting well comprises a rainwater inlet pipe, a flow dividing well chamber, a rainwater outlet pipe, a flow abandoning pipe, a control cabinet, an electric valve, a valve well chamber and a rain gauge, wherein the flow dividing well chamber communicates with the rainwater inlet pipe,the rainwater outlet pipe and the flow abandoning pipe respectively; the rainwater inlet pipe is used for receiving rainwater in an upstream water collecting area of an area; the rainwater outlet pipe is used for communicating with a downstream rainwater pipe network; the flow abandoning pipe is used for being connected to a sewage inspection well; the electric valve is arranged on the flow abandoning pipe and is arranged in the valve well chamber; and the control cabinet is connected with the electric valve and the rain gauge respectively. Sewage in sunny days can be intercepted and drainedinto the sewage pipe network, a large amount of rainwater can be prevented from being drained into the sewage pipe network in rainy days, drainage pressure of the downstream sewage pipe network is relieved, and the load and treatment cost of a downstream sewage treatment plant are reduced.