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Floating skimmer apparatus with up-flow filter
ActiveUS20100032363A1Smooth water flowGeneral water supply conservationTreatment involving filtrationPollutantStorm
The present invention is a storm water filter system for filtering floatable debris and non-floating pollutants from storm water passing through a storm water drain system. The storm water filtering system has a floatable skimmer therein for capturing floatable debris and trash from the storm water and a separate filtration system to filter non-floatable pollutants from water passing therethrough.
Owner:OLDCASTLE INFRASTRUCTURE INC
Efficient paint mist coagulating agent and preparation thereof
InactiveCN101407353AImprove working environmentExtended service lifeWater/sewage treatment by flocculation/precipitationIron saltsWastewater
The invention relates to a highly-efficient paint mist coagulant and an application method thereof. The paint mist coagulant includes an A reagent and a B reagent, the A reagent is a water solution mainly prepared by a modified macromolecule polymerization metal salt, the macromolecule polymerization metal salt is aluminium salt or iron salt; the B reagent is a water solution mainly prepared by a polymerization amide-type substance with molecular weight of 9 millions to 12 millions. When in application, the paint waste water is blended with the A reagent and the B reagent according to volume ratio of 500:2:1, thus leading the paint in the paint waste water to cake and float, the paint and the water are separated, clear water is obtained to reuse. The usage is firstly adding the A reagent, and adding the B reagent after even blending. The processed paint waste water is fat-soluble paint waster water and water-soluble paint waste water. The highly-efficient paint mist coagulant has a wide reagent source, effectively overcomes the disadvantages of the trivial preparation process, many and complex additional reagents and high price of the traditional paint mist coagulant, can reduce common paint waste water treatment cost to 0.25 yuan / ton and can be widely used in circulating water treatment in a wet-typed paint mist removing system.
Owner:WUHAN UNIV OF TECH
High-flux high-dirt-holding-capacity filtering element and preparation method thereof
InactiveCN102188848AExtended service lifeEven distribution of water flowStationary filtering element filtersCENBOLFiltration membrane
The invention discloses a high-flux high-dirt-holding-capacity filtering element, which comprises a filtering medium layer (3), a central tube (2), a shell (1) and upper and lower end covers (10, 11), wherein the filtering medium layer (3) is folded into an arc-shaped fold and then encloses the central tube (2), and the whole is cylindrical; the shell (1) is sleeved outside a cylindrical filtering medium; the filtering medium layer comprises a filtering layer (3b) and plastic net layers (8) which are positioned on two sides of the filtering layer; the filtering layer consists of at least two layers of filtering materials (3d); and the upper and lower ends of the central tube (2) and the shell (1) are fixedly connected with the upper and lower end covers. A high-flux folding filtering element is wide in runner, relatively low in fluid resistance, and more uniform in flow distribution of water inlet and outlet ends of the filtering element. Compared with the conventional W-shaped linear fold designing filtration membrane, the high-flux folding filtering element is improved by over 30 percent in terms of filling density, large in filtering area, high in total dirt-holding capacity and long in service life of the filtering element.
Owner:浙江瑞普环境技术有限公司
Multifunctional water softening valve
ActiveCN102635707ASmooth water flowEasy to use and installScale removal and water softeningMultiple way valvesEngineeringStreamflow
The invention discloses a multifunctional water softening valve. The valve comprises a valve body, a cover, an ejector, a fixed valve plate and a moving valve plate, wherein the moving valve plate is connected with a valve rod; the water softening valve is provided with a water inlet, a water outlet, a drain outlet, a filter element outside connector, a filter element inside connector and a salt absorption hole; and an ejector outlet and an ejector inlet flow passage are also arranged in the water softening valve. The valve is characterized in that six through holes are arranged on the fixed valve plate; the first and second through holes are communicated with the filter element outside connector; the third through hole is communicated with the filter element inside connector; the fourth through hole is communicated with the water outlet; the fifth through hole is communicated with the ejector outlet; the sixth through hole is communicated with the ejector inlet; the moving valve plate is provided with a water inlet channel, a communication blind hole and a sewage draining channel; the sewage draining channel is communicated with the drain outlet; the fixed valve plate and the moving valve plate are sealed by end faces; and different flow passages are formed by rotating the moving valve plate. The valve has the beneficial effects of practicability, high flow, environment friendliness and convenience in use and installation.
Owner:YUYAO YADONG PLASTIC
Intelligent cleaning robot
InactiveCN106955062ARealize the detection functionLow costCarpet cleanersFloor cleanersLeaking waterEngineering
The invention discloses an intelligent cleaning robot. The robot comprises a casing, a water tank, a mop, a controller and a power supply, wherein an accommodating cavity used for accommodating the water tank is formed in the casing; an inner water outlet is formed in the bottom of the water tank and connected with a water valve for controlling the inner water outlet to be opened or closed, a conducting strip group is arranged on the outer wall of the water tank, and a spring needle group matched with the conducting strip group for detection is arranged in the accommodating cavity. The intelligent cleaning robot has the functions of water tank detection, water yield control and water level detection; besides, the water tank is provided with a hidden air inlet cavity, so that the water tank does not leak water after being inverted at will.
Owner:SHENZHEN YUNFENG INTELLIGENT TECH CO LTD
Weather non-water tank pressure-bearing solar water heater
ActiveCN1752659AEasy to useSmooth water flowSolar heating energySolar heat devicesWater storageSolar water
The present invention relates to an all-weather pressure-bearing type solar water heater free from water tank. It includes heat collector which is made up by series-connecting several glass evacuated collecting tubes by means of L-shaped flow-inducing tubes, on the cold water inlet tube of first collecting tube a non-return valve and a pressure switching valve are set, on the hot water outlet tube of tail end collecting tube a decompression safety valve is series-connected, and a temperature sensor is inserted into any one collecting tube of tail portion first to fourth collecting tube. Said solar water heater has the double function of heat collection and water storage.
Owner:黄永生
Automatic control type hot-gallbladder-free intelligent drinking machine
The invention relates to a self-control and non-thermal bile intelligent drinking machine. The electric heating membrane heater is used as heater, and is equipped with gas discharge buffering device, which can continuously discharge bubble generated during heating process, the hot water can be discharged smoothly. The electric heating circuit of said drinking machine comprises power adjusting circuit, which regulates the output power in time according to water temperature in electric membrane heating pipe. Because the cold water temperature, grid voltage and electric heat membrane reduction that influence heating process and hot water temperature, the water temperature regulation can be carried out according to each influencing factor.
Owner:邬志坚
Helix extrusion type sludge dehydrator
ActiveCN101781076ASmooth water flowSolve the blockageSludge treatment by de-watering/drying/thickeningWater flowEngineering
The invention relates to a helix extrusion type sludge dehydrator. Multiple first friction convex ribs (41) are evenly spaced and distributed along the circumference on both sides of each moving filter leaf (4). The space between two adjacent first friction convex ribs (41) is larger than the width of the first friction convex rib (41). Multiple second friction convex ribs (31) are also evenly spaced and distributed along the circumference on both sides of each non-moving filter leaf (3). The space between adjacent two second friction convex ribs (31) is larger than the width of the second friction convex rib (31). Compared with the prior art, the first friction convex rib on the moving filter leaf of the invention can contact and rub with the side of adjacent non-moving filter leaf. Sludge can be scraped down by the first friction convex ribs. Furthermore, the sludge can also be scraped down by the second friction convex ribs of the non-moving filter leaf. The invention can well solve the problem of blocking between the moving filter leaf and the non-moving filter leaf. The invention effectively guarantees the space between the moving filter leaf and the non-moving filter leaf, and smooth water flowing out of the sludge dehydrator.
Owner:ZHEJIANG DEAN TECH
Wallpaper printing system
ActiveCN104002507AReduce in quantityHigh thermal efficiencyMechanical working/deformationWebs handlingEngineeringHeating efficiency
The invention relates to a wallpaper printing system and belongs to the technical field of printing machines. The wallpaper printing system comprises a preheating mechanism, an embossing mechanism, a cooling mechanism, a tension mechanism, a winding mechanism and a machine frame. The preheating mechanism comprises a preheating cover and a heating roller, the preheating cover is arranged on a working surface of the heating roller, the embossing mechanism comprises a press roller and an embossing roller, and the press roller and the embossing roller are parallelly arranged and located on a discharging port of the preheating mechanism. Hot oil single-side inflow and outflow are adopted according to the preheating mechanism for the wallpaper printing system, the number of components in heat exchange with hot oil is reduced, and heat efficiency is improved; according to the preheating mechanism for the wallpaper printing system, an oil guide sleeve is adopted, the area of the hot oil in the heating roller is reduced, the circulation speed of the hot oil is accelerated, and the temperature of a roller can be kept constant to the largest extent.
Owner:陈换换
Variable-diameter single-screw-shaft dehydrating device
ActiveCN103712421AReduce moisture contentImprove the extrusion effectDrying solid materials without heatHelical bladeEngineering
A variable-diameter single-screw-shaft dehydrating device comprises a frame, a driving device, a feed component, a discharge component, a tapered sieve cage and a driving rotary shaft. The feed component and the discharge component are arranged at two ends of the frame. The tapered sieve cage is arranged in the frame. The driving rotatory shaft is mounted in the sieve cage and is coaxially arranged with the sieve cage. The driving device is connected with one end of the driving rotary shaft. A screw blade is arranged on the driving rotary shaft. The diameter of the screw blade gradually decreases along with the inner diameter of the tapered sieve cage. The diameter of the driving rotary shaft gradually increases along with decrease of the inner diameter of the sieve cage. The screw pitch of the screw blade gradually decreases along with the increase of the diameter of the driving rotary shaft. The variable-diameter single-screw-shaft dehydrating device is good in dehydrating effect and smooth in equipment water discharge, moisture content of dehydrated materials is obviously reduced as compared with the original moisture content, and energy as required by follow-up drying is greatly reduced.
Owner:江苏纵横浓缩干燥设备有限公司
Gas laser
InactiveCN101789559ASimple structureIncrease powerActive medium materialGas laser constructional detailsLaser processingMetallic materials
The invention discloses a gas laser, which comprises a discharge chamber, a discharge electrode, a water-cooling channel and a gas storage chamber, wherein the water-cooling channel is distributed on the ektexine of the discharge chamber, the gas storage chamber is positioned outside the water-cooling channel, the discharge chamber and the gas storage chamber are communicated through a muffler, the discharge chamber is a sealed cavity which consists of a discharge cavity, a strip-shaped reflector on a tail end mirror, a strip-shaped reflector on an output end and a full-through output mirror, the discharge cavity is in a lath-shaped hollow-core structure which is made of nonmetal materials, the tail end mirror, the strip-shaped reflector on the output end are respectively positioned on the front end and the rear end of the discharge cavity, an aperture is left on the middle or one side of the strip-shaped reflector of the output end, the full-through output mirror is positioned at the position of the aperture and is used as a laser output window, and the discharge electrode is poisoned in the front end and rear end of the discharge cavity, or in the left side and the right side of the discharge cavity. The gas laser has small size, light weight, simple structure, a cooling system with good cooling effect, high output power and stable laser beam with good mode, and can be used for the laser processing industry.
Owner:HUAZHONG UNIV OF SCI & TECH
Water energy machine
InactiveCN1651758AAchieve soft landingWaterline automatic adjustmentWater-power plantsMachines/enginesWater flowEngineering
The present invention relates to a water engine machine capable of extensively and fully utilizing natural water flow energy source. Its technical scheme is characterized by that a light high-sensitivity hydraulic turbine is mounted on the floating table or seat table, said whole machine can be floated or fixed in the water toward water flow, then the hydraulic turbine can be rotated so as to obtain the low-cost green energy source.
Owner:杨建宝
Paint mist coagulant and preparation method thereof
InactiveCN102502935AImprove working environmentImprove circulating water qualityWater/sewage treatment by flocculation/precipitationEnvironmental engineeringAqueous solubility
The invention discloses a paint mist coagulant and a preparation method thereof. The paint mist coagulant comprises an agent A and an agent B, wherein the agent A is an aqueous solution which is prepared by taking a macromolecular polymeric metal salt as a main component; the macromolecular polymeric metal salt is aluminum salt or ferric salt; and the agent B is an aqueous solution which is prepared from a polyamide substance with the molecular weight of 9000000-12000000. In the application, paint wastewater, the agent A and the agent B are mixed according to a volume ratio of 500: 2: 1, paint in the paint wastewater agglomerates and floats upwards, the paint is separated from water to obtain clear water, and the clear water is reused; the application method is that the agent A is added and uniformly mixed firstly and then the agent B is added; and the treated paint wastewater is fat-soluble treated paint wastewater and water-soluble treated paint wastewater. The chemicals used in the invention are wide in source; the defects that the conventional process of preparing the paint mist coagulant is complicated and many complicated and expensive chemicals are added are overcome; the treatment cost of the ordinary paint wastewater can be reduced to 0.25 Yuan per ton; and the paint mist coagulant can be widely applied to circulating water treatment of a wet-type paint mist removing system.
Owner:CHANGSHA GUTERUI NOVEL MATERIAL SCI & TECH
Embedded leak-proof joint
InactiveCN104452949AEasy to rotate and alignRealize the inconvenience of installationSewerage structuresDomestic plumbingArchitectural engineeringBuilding construction
Owner:湖南中财化学建材有限公司
Drainage well opening anti-falling and warning device
ActiveCN106400935APrevent fallingWarning approachArtificial islandsSewerage structuresForeign objectEngineering
Owner:丁丽军
Hydraulic automatic control sewage intercepting well
PendingCN108412026ARelieve stressPrevent backflowFatty/oily/floating substances removal devicesSewerage structuresAutomatic controlGrating
The invention discloses a hydraulic automatic control sewage intercepting well. The well is characterized in that a well body is divided into a filtering well chamber, an intercepting well chamber anda water outlet well chamber according to the water flowing sequence, wherein a grating is arranged between the filtering well chamber and the intercepting well chamber, and an overflow weir is arranged between the intercepting well chamber and the water outlet well chamber; a sewage intercepting pipe is arranged at the lower part of the intercepting well chamber and is communicated with the outside, and a sewage intercepting valve is arranged at an opening of the sewage intercepting pipe; a water outlet is formed in the water outlet well chamber, and an anti-backflow flap valve is arranged atthe water outlet. The sewage intercepting well device is suitable for small-flow pollutant intercepting of confluence pipes in villages and towns, the automatic operation is achieved, the construction investment is saved, the operation cost is low, construction and maintenance are convenient, the interception amount of combined sewage can be automatically controlled, and the situation that the load of a subsequent pipeline is too large and overload operation of a sewage treatment plant is caused due to an excessively large pollutant intercepting amount is avoided.
Owner:HUALAN DESIGN GRP CO LTD
Modern agricultural planting hidden layer filter and drainage and water and soil improving high-yield technology blind drain
InactiveCN105340411AImprove discharge water qualityIncrease underground air circulationSoil lifting machinesSoil-working methodsPloughAgriculture
The invention relates to a modern agricultural planting hidden layer filter and drainage and water and soil improving high-yield technology blind drain. An isolation layer, a first filter layer, a second filter layer, a third filter layer, a fourth filter layer and a fifth filter layer are sequentially arranged below a soil plough layer from top to bottom, wherein the first filter layer is composed of coarse sand, the second filter layer is composed of coarse sand and melon seed-shaped gravels or small gravels, the third filter layer is composed of melon seed-shaped gravels or small gravels, the fourth filter layer is composed of inch gravels or medium gravels, and the fifth filter layer is composed of large gravels. A laying layer is arranged on the upper layer of the isolation layer, and a filter net is arranged on the lower layer of the isolation layer. The laying layer is composed of mountain grass or bamboo or leaves or fruit shells or straw or halm or husk. A pipeline with no filter net or a drainage pipeline wrapped by a filter net are arranged in the fifth filter layer and is higher than the horizontal plane of water flow in a canal or river, and a plurality of small holes are evenly formed in the pipe body for water flow. Water in soil on a farmland planting surface layer or hidden layer is drained after being filtered, the drained water quality is improved, the hidden layer soil water level is lowered, and the deep desalination and dealkalization effect can be achieved for salt and alkali farmland. The modern agricultural planting hidden layer filter and drainage and water and soil improving high-yield technology blind drain is easy to construct, practical, durable and low in cost.
Owner:韩秋华
Robot for underwater observation and observation method thereof
ActiveCN109878667ASmooth water flowSmall impact on shootingTelevision system detailsColor television detailsImaging qualityWater flow
The invention discloses a robot for underwater observation and an observation method thereof, and belongs to the field of underwater engineering. The robot comprises a basis assembly, a driving assembly and a shooting assembly. The basis assembly comprises a waterproof shell, a top plate installed on the waterproof shell and multiple supports arranged at the bottom of the waterproof shell. The driving assembly comprises two balance buoyancy cavities formed in the two sides of the waterproof shell, a balance detector arranged between the two balance buoyancy cavities and paddle-free propellersarranged in the middles of the two balance buoyancy cavities. The shooting assembly comprises a camera shooting unit and an underwater halogen lamp which are arranged on the top plate. According to the robot for underwater observation and the observation method thereof, screw propulsion is replaced with the paddle-free propellers, and water flow ejected by the paddle-free propellers is stable, andhas a small shooting influence on the shooting assembly; the problem that as an existing underwater robot is influenced by propulsion of an engine of the existing underwater robot, the imaging quality of a visual system is reduced is solved.
Owner:张思银
Beveled bidirectional vertical pump device
ActiveCN103047185AGuaranteed uptimeEasy maintenancePump componentsPumpsImpellerHydraulic engineering
The invention belongs to the technical field of hydraulic engineering and discloses a beveled bidirectional vertical pump device which comprises a bidirectional rectangular water inlet runner, a rectangular water outlet runner, an eddy elimination and prevention cone, an inlet flared pipe, an impeller chamber, a guide vane part, a despinner, an annular siphonic water outlet structure, a rear water guide cone, an outlet flared pipe and a humped annular shell. The eddy elimination and prevention cone is arranged in the rectangular water inlet runner below the inlet flared pipe, an inlet of the impeller chamber is connected with the inlet flared pipe, and an outlet of the impeller chamber is connected with the guide vane part. The despinner, the rear water guide cone and the outlet flared pipe are sequentially arranged on the upper portion of the guide vane part, the upper annular side of the humped annular shell is smoothly connected with the upper edge of the rear water guide cone, the lower annular side of the humped annular shell is positioned in the rectangular water outlet runner to form the annular siphonic water outlet structure, and the humped tope of the annular siphonic water outlet structure is provided with a vent hole connector connected with a vacuum breaker valve. The beveled bidirectional vertical pump device is structurally reasonable and scientific, has four functions of self-discharging, self-sucking, pump-discharging and pump-sucking and is high in automation degree and convenient to operate and manage, efficiency of the pump device is improved, and investment is saved.
Owner:YANGZHOU UNIV
Cooling water pump for internal combustion engine and production process of cooling water pump
InactiveCN106837507AIncrease effective powerExtend your lifePump componentsFoundry mouldsImpellerExternal combustion engine
The invention discloses a cooling water pump for an internal combustion engine. The cooling water pump comprises a water pump shell, a rotary shaft, a cover plate and an impeller. A cavity is formed in the water pump shell, the rotary shaft is mounted in the middle of the cavity through a bearing, and the impeller can be mounted on the rotary shaft in the manner of rotating around the axis of itself. The cover plate is fixedly connected with the side, provided with the cavity, of the water pump shell. The water pump shell is provided with a water inlet and a water outlet, a separation tongue is machined in the position, close to the water outlet, in the cavity, a volute chamber passageway is machined between the separation tongue and the water outlet, and the volute chamber passageway is in an arc shape. The impeller comprises a hub, a wheel disc and blades. The hub is fixedly connected with the center of the wheel disc, the blades are in arc sheet shapes, and the at least two blades are evenly arranged on the wheel disc around the hub in a spaced manner. At least two openings are formed in the wheel disc, and the openings are formed between the blades. According to the cooling water pump for the internal combustion engine, the openings are formed in the wheel disc, the size and mass of the impeller are reduced, the available volume in the cavity is increased, and under the condition of not changing the boundary dimension of the water pump and a connector, the flow of the water pump is increased, and energy consumption is reduced.
Owner:YANCHENG DUOWEI GROUP
Bottle cap discharging water through stirring
ActiveCN104555048APrevent outflowSimple structureClosures with discharging deviceEngineeringBottle cap
The invention discloses a bottle cap discharging water through stirring. The bottle cap discharging water through stirring comprises a fixed cover, a sealing valve made of elastic material is arranged in the fixed cover, the fixed cover and sealing valve are provided with corresponding suction nozzle splicing holes, a suction nozzle is arranged in the suction nozzle splicing holes, a deformation part is arranged at the upper side of the sealing valve, a sealing part is arranged at the middle, a fixed holding part is arranged at the lower end, a convex bottom plate is arranged at the lower end of the suction nozzle, the sealing valve is hermetically connected with the side wall of the suction nozzle, the sealing part is sealed with the surface of the bottom plate, the lower end of the bottom plate is firmly connected with the fixed holding part, the suction nozzle is provided with a water inlet of the suction nozzle in the deformation part, and the fixed holding part is provided with a sealing valve water inlet communicated with the deformation part. The bottle cap discharging water through stirring is simple in structure and smooth in water discharge, after loosening the suction nozzle, the suction nozzle resets naturally by means of the elastic effect of the sealing valve, and the sealing part is sealed with the surface of the bottom plate again to prevent liquid in the bottle flowing out.
Owner:李红彪
Box-shaped floating type dock gate with open bottomtank
ActiveCN101239653ASimple piping system setupImprove the stability of sinking and floatingDry-dockingEngineeringMechanical engineering
The present invention provides a bottom tank opening case shaped floating gate, including a gate body and a water ballast space set in the gate, a tide cabinet, a botton cabinet, a pump valve cabinet, the characteristics is that the bottom plate of the gate is set with a solid ballast, a water ballast space having a ''L'' shaped section is symmetrically set in the gate and the solid ballast; a deck is set between two water ballast spaces and in the center of the gate, the top of the deck is divided into several tide cabinets, the lower center is set with a bottom cabinet, two ends and top are pump valve cabinets. The invention adopts reasonable cabinet design, has light load displacement, solid ballast, reducing installed capacity contrast to the present technology. the pipe system is simple, drainage of the tide cabinet is smooth, sediment deposition is easy to clean, the dock gate has a better stability and safety, and saving the investment and equipment operationa and maintenance charge.
Owner:ZHONGCHUAN NO 9 DESIGN & RES INST
Control method of water faucet
InactiveCN107448661AThe water flow went smoothlyReduce short supplyOperating means/releasing devices for valvesDomestic plumbingHand washingLiquid soap
The invention discloses a control method of a water faucet. The water faucet is characterized in that a first sensor used for sensing the hands of a user in the vertical direction is arranged on the water faucet. The control method of the water faucet comprises the following steps: S1, mixing clear water with a liquid soap according to a preset proportion to form a mixed hand-washing solution; S2, when the first sensor senses the hands of the user, controlling the water faucet to enable the mixed hand-washing solution to flow out, so that the water faucet enters a mixed hand-washing solution mode; S3, when the hands of the user is within the sensing range of the first sensor and after the mixed hand-washing solution flows out for a first preset time, controlling the water faucet to enable clear water to flow out, and the water faucet enters a clear water mode. The control method of the water faucet provided by the invention has the benefits as follows: when the user puts the hands under the water faucet, the liquid soap and the clear water which are mixed according to a proper proportion are discharged through the water faucet, and after the user scrubs with the mixed hand-washing solution, clear water is discharged automatically through the water faucet to thoroughly clean the hands of the user, the overall process is carried out in a same hand basin, no switch is needed, and therefore the use is simple and convenient.
Owner:梁颂轩
Plastic assembling module for rainwater collection and storage
InactiveCN104746631AReduce construction costsSmooth water flowSewerage structuresGeneral water supply conservationRainwater harvestingEngineering
Owner:江阴市星宇塑胶有限公司
New style rapid heating drinking machine
InactiveCN101118084APrevent intrusionPrevent temperature shiftingWater heatersEngineeringTemperature resistance
The present invention relates to a quick heating water dispenser, which comprises a casing, a water tank and a quick heater arranged on the casing, the water tank is connected with a water outlet pipe, and connected with the inlet of the quick heater, the outlet of the quick heater is connected with a hot water outlet, the quick heating pipe is arranged inside a heating pipe outer protective cover. The inlet is connected with the water inlet tie-in in airproof method, the outlet is connected with the water outlet tie-in of the protective cover in airproof method. The present invention provides a novel quick heating water dispenser with reliable structure, strong performance of pressure resistance and temperature resistance, and long service life.
Owner:岑孟达
Inflow and outflow water body of pump shaft locating-free inflow and outflow water body structure
InactiveCN104863899AGuaranteed to workGuaranteed coaxialityPump componentsPumpsEngineeringMechanical engineering
The invention belongs to the technical field of water pump tools, and particularly relates to an inflow and outflow water body of pump shaft locating-free inflow and outflow water body structure. The inflow and outflow water body of the pump shaft locating-free inflow and outflow water body structure comprises a main body, a first seam allowance and a second seam allowance are formed in the upper end face of the main body and are simultaneously formed through one-time clamping and machining, a water inflow guide blade is arranged above the first seam allowance and is matched with the first seam allowance, the second seam allowance is connected with an outer cylinder matched with the second seam allowance, and the water inflow guide blade is arranged in the outer cylinder. The water body has the advantages that coaxiality of a pump shaft can be guaranteed, and inflow water at a water inlet of a pump flows smoothly.
Owner:ZHEJIANG NANYUAN PUMP IND CO LTD
Koi culture method
ActiveCN109673547AFully fertilizedSmooth water flowClimate change adaptationPisciculture and aquariaFecundityFertility
The invention relates to the field of koi culture, and particularly relates to a koi culture method, comprising the following steps obtaining roes of female parent fish of koi by adopting a manual primary intraperitoneal injection odinagogue, wherein the spawning efficiency time is 11-20h, and the weight relative fecundity is about 98.16 / g; then, performing conventional dry-method insemination according to a volume ratio between a semen diluent and roe of 1:2 or 3:4, and waiting for 1-2min after insemination of the roes; then immediately performing artificial roe layout, with the method of slowly moving a hatching mesh or hatching cup, so that the roes can be uniformly attached to the hatching mesh to the greatest extent, and toe overlapping or leakage in a hatching barrel is reduced. After artificial hatching, performing seedling culture. By adopting the koi culture method disclosed by the invention, the fertility rate of is 98.47% on average, the hatching rate is 87.52% on average, and the death rate of the parent fish after delivery is 0. The koi culture method disclosed by the invention has important significance to the large-scale culture of the koi and promotion of the high-quality good prepotency rate.
Owner:BEIJING FISHERIES RES INST
Cross-medium unmanned aerial vehicle device and control method thereof
ActiveCN113085462AAvoid destructionGuaranteed flight statusFuselagesAir-flow influencersUncrewed vehicleStructural engineering
The invention discloses a cross-medium unmanned aerial vehicle device and a control method thereof. The cross-medium unmanned aerial vehicle device comprises a shell and a piston which is arranged in the shell and can reciprocate in the shell, one end of the shell is open, and a plurality of flying wings are evenly arranged in the circumferential direction of the piston; the flying wings are rotatably connected to one side, facing the opening, of the piston and are unfolded or folded in an umbrella shape; and under the pushing of the piston, the flying wings can be unfolded towards the outside of the shell and can be folded back into the shell. The piston capable of moving is arranged in the shell, the piston is rotatably connected with the flying wings, the flying wings can be unfolded towards the outside of the shell under the pushing action of the piston and can be folded in the shell, and therefore conversion of different forms in water and air can be completed; when the device enters and moves out of water, the flying wings are folded in the shell and protected by the shell to be prevented from being damaged; and during flying, the flying wings can be smoothly unfolded to guarantee the flying state.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Aeration structure for Longluowei flood discharging tunnel
The invention relates to the field of water conservancy and hydropower, in particular to an aeration structure for a Longluowei flood discharging tunnel. The technical problem to be solved is to provide the aeration structure for the Longluowei flood discharging tunnel, which is capable of effectively reducing damage to an overcurrent surface of the flood discharging tunnel due to cavitation of high-speed flow. The aeration structure for the Longluowei flood discharging tunnel comprises a flood discharging tunnel, wherein the flood discharging tunnel is formed by connecting a tunnel initial segment, a slope segment, a reverse camber segment and a downstream slope segment in sequence, and at least one aeration aerator is arranged in the flood discharging tunnel. During actual use, the flood discharging tunnel is formed by connecting the tunnel initial segment, the slope segment, the reverse camber segment and the downstream slope segment in sequence, and air admission is carried out on flow in the flood discharging tunnel through the flood discharging tunnel, so that the small impact force on concrete of the overcurrent surface of the flood discharging tunnel, which is caused by flow cavitation due to turbulent fluctuation of high-speed flow, can be effectively reduced, and cavitation corrosion damage to the flood discharging tunnel is reduced, and thus the effects of smooth flow state of the flow and full aeration are achieved. The aeration structure is particularly suitable for construction of the Longluowei flood discharging tunnel.
Owner:POWERCHINA CHENGDU ENG
Weather-resistant colored composite PVC (Polyvinyl Chloride) pipe
ActiveCN103524972AWeather resistantWith a variety of colorsSynthetic resin layered productsAntioxidantPolyvinyl chloride
The invention provides a weather-resistant colored composite PVC (Polyvinyl Chloride) pipe. The weather-resistant colored composite PVC pipe comprises an outer layer 3 and a core layer 2 which are subjected to co-extrusion, wherein the core layer 2 is a PVC layer; the outer layer 3 is a modified ASA (Acrylonitrile Styrene Acrylate) resin layer which is made from acrylonitrile, styrene and acrylate grafted copolymer, stearic acid, a fatty acid ester lubricating agent, calcium stearate, pigment, an antioxidant, an ultraviolet-resistant absorbing agent, an outer lubricating agent, a filling agent and a plastic modifying agent; the PVC pipe is made from polyvinyl chloride resin, a calcium-zinc stabilizing agent, modified barium sulfate, ACR (Acrylicester) resin, chlorinated polyethylene, stearic acid, polyethylene wax and a fatty acid ester lubricating agent and the like. The composite PVC pipe provided by the invention has the advantages that the weather resistance is excellent, the color is diversified and the sound-insulating effect is good.
Owner:重庆顾地塑胶电器有限公司 +1
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