44results about How to "With separation function" patented technology

The invention belongs to the technical field of material science and engineering and particularly relates to a functional porous cement based composite material and a preparation method thereof. The composite material is prepared from the following raw materials: cement, aggregates, water, additives and a catalyst in a ratio of (1-1.2):(0.5-0.6): (0.2-0.8):(0-0.04):(0-0.2), wherein the content of the catalyst is not zero and the catalyst is a compound of titanium dioxide and graphene oxide. The invention provides the functional porous cement based composite material which not only has a separating function, but also has the characteristics of being photocatalytic, pollution-resistant and self-cleaning. The functional porous cement based composite material is simple in preparation process and low in cost and has wide application prospect in the technical industry of environmental protection and management.

Disclosed is a plate heat exchanger with a condensed fluid separating function, which includes a reheater having plural laminated wrinkled plates and introduction and discharge holes connected to different compressed air channels therein; a chiller having plural laminated wrinkled plates, working fluid inlet and outlet holes connected to a working fluid channel therein, and compressed air channels formed therein; and a wall-shaped pipe configured for partitioning the reheater and the chiller with providing a flow line to communicate a compressed air with the reheater and the chiller. An adiabatic expansion chamber is formed in a lower portion of the chiller on a flow line for the compressed air cooled in the chiller to move toward the reheater. A condensation chamber is formed in a lower portion of the reheater connected to the adiabatic expansion chamber. A condensation mesh sieve and a drainage hole are formed in the condensation hole.

The invention provides a combined type sealing cover and an open-type axial flow threshing system using the same, and relates to sealing covers and open-type axial flow threshing systems. The combined type sealing cover and the open-type axial flow threshing system using the same aim at resolving the problems that a sealing cover in an existing threshing system can not achieve multiple purposes, workload is heavy, and only a single variety of crops can be harvested. A front sealing cover shell of the combined type sealing cover is provided with an impurity and residue recovery system connection port, a front sealing plate, the front sealing cover shell, a rear middle sealing cover shell and a rear sealing plate are connected in sequence, rear two side sealing cover shells are installed on two sides of the rear middle sealing cover shell, a plurality of front guide vanes are installed on the front sealing cover shell in an inclined mode, and a plurality of rear middle guide vanes are installed on the rear middle sealing cover shell in an inclined mode. A chained coupling and a transmission reversing gearbox of the threshing system are sequentially installed at the rear end of at least one set of axial flow threshing device. The combined type sealing cover and the open-type axial flow threshing system using the same are used for threshing the crops.

The invention discloses a method for fast screening a xanthine oxidase inhibitor or a superoxide anion scavenging agent by utilizing a coupling technique of thin-layer chromatography and bioautography. According to the method, the thin-layer chromatography is combined with biological activity assay, a superoxide anion free radical (O2<.->) generated by an enzymatic reaction reacts with nitroblue tetrazolium (NBT) to generate formazan which is a bluish violet insoluble substance, and substances capable of inhibiting xanthine oxidase or scavenging superoxide anion inhibit the reaction so yellow and / or white spots under a purple background show on a thin layer plate. The method is suitable for analyzing the in-vitro inhibition activity to the the xanthine oxidase or the scavenging activity to the superoxide anion of natural drugs and / or traditional Chinese medicine extracts or monomeric compounds.

The invention relates to an offshore wind power generator with a separating function. The offshore wind power generator comprises a seabed anchor, connecting piles, a base, a floating body, a tower tube, a power generating unit, a driving mechanism, a first fixing mechanism and a second mechanism, wherein the first fixing mechanism comprises a supporting rod, a push rod, a first rack, a second rack and a circular gear, the second fixing mechanism comprises a force sensor, a winding engine and a stay cord, and the driving mechanism comprises blades, a flange disc and a transmission shaft. According to the offshore wind power generator with the separating function, in normal circumstances, the tower tube of the wind power generator is fixed in the base, and when the sea level extremely rises due to conditions such as rainstorms and tsunami, the tower tube can float on the sea surface under the action of the floating body. In addition, the wind power generator is provided with an anti-collision mechanism, and a protective effect on the wind power generator itself and a ship can be achieved when the ship is collided.

The invention relates to an assembled bathroom and a construction method for the same. The bathroom comprises a floor, four wall bodies, a ceiling and bathroom equipment. According to the invention, the floor and the wall bodies have triple functions including entity existence, decoration and waterproof performance; floor drains, horizontal-row pipelines and vertical-pipe socket-and-spigot joints are disposed in the floor; and water supply and drainage pipelines, electric appliance circuits, installation parts of sanitary ware and the like are disposed in the wall bodies. The assembled bathroom provided by the invention is characterized in that the floor and the wall bodies are different from a floor and wall bodies of a traditional box-type bathroom, integrate functions of structure, decoration, waterproof performance, pipelines and the like, and are capable of load bearing, sound insulation and division; each whole-face wall body is prefabricated and integrated at a factory; only the four wall bodies need to be assembled on site; and requirements of construction structure systems such as modern PC structures and steel structures can be satisfied. Meanwhile, a brand-new drainage system is adopted in the floor, so that floor descending is not needed during same-layer drainage, and the drainage system has advantages which cannot be prevailed by a same-layer floor-descending drainage mode.

The invention relates to the technical field of high polymer materials, and particularly discloses hydrophobic slurry as well as a preparation method and application thereof, wherein the hydrophobic slurry is Pickering type hydrophobic slurry, the hydrophobic slurry comprises solid particles, water and a solid hydrophobic substance, and the solid hydrophobic substance is embedded in the solid particles in a particle form. Through a Pickering emulsion type particle emulsifying technology, the solid hydrophobic substance particles are embedded in solid particles to form spherical particles, milkwhite hydrophobic slurry with uniform and stable properties is prepared, and high hydrophobicity and water resistance can be provided for a to-be-applied base material. The invention also provides the preparation method of the hydrophobic slurry, and the method is simple and convenient, and is beneficial to industrial production. The invention also provides hydrophobic paper which comprises the hydrophobic slurry, is simple and convenient to prepare and has good hydrophobic performance.

The invention discloses a simulation doctor system of intelligent medicine based on a composite diagnosis and treatment template, comprising a diagnosis and treatment template module for providing an interactive interface for doctor to build and maintain the diagnosis and treatment template; a synthesis simulation doctor module for synthesizing the diagnosis and treatment templates to be a simulation doctor to provide diagnosis and treatment service for patients. The simulation doctor system of intelligent medicine based on the composite diagnosis and treatment template has the advantages of high simulation degree, high efficiency, high accessibility and high timeliness. The system can provide the simulation doctor with all experience and wisdom of the doctor to provide 24-hour service in 365 days for patients, so that the patient can enjoy comprehensive care of the simulation doctor at any time and any place.

The invention belongs to the technical field of fuel cells, and particularly relates to a gas-water separation assembly, a fuel cell hydrogen circulation system and application. At present, for a fuelcell hydrogen circulation system using a single ejector, the ejector cannot work in a wide power range, and meanwhile, the resistance loss of a gas-water separator in the system is relatively large.If a plurality of ejectors are used for jointly working to broaden the applicable power range of the ejectors, system components are increased, control becomes complex, and reliability is reduced. Theinvention provides a gas-water separation assembly which comprises a main body, a nozzle is arranged at one end of the main body, the nozzle is connected with a swirl vane, and a gas-liquid mixture inlet is formed in one end of the main body. An exhaust pipe and a drain pipe are arranged at the other end of the main body. Part of the ejection function is achieved, and the working range of the ejector is widened; A traditional gas-water separator is replaced, and the gas-water separation assembly has the advantages of being small, compact, small in pressure loss and beneficial to improving theperformance of the ejector.

The invention discloses traditional Chinese medicinal material extraction equipment based on ceramic membrane concentration. The traditional Chinese medicinal material extraction equipment comprises atank body, a motor is installed at the top of the tank body, a rotating shaft is rotatably installed in the tank body, a stirring knife is welded to the surface of the rotating shaft, a steam valve is installed on the portion, close to the end face of a feeding bin, of the tank body, a filtering device is installed at the bottom of the tank body, a bottom valve plate is pneumatically installed atthe bottom of the tank body, a medicine residue storage tank is arranged under the bottom valve plate, a steam inlet is formed in the bottom valve plate, and the steam inlet can be in gas communication with the tank body. A liquid medicine inlet pipe is arranged at the position, located below the filtering device, of the tank body, a ceramic membrane concentration filtering device can be in fluidcommunication with the tank body through the liquid medicine inlet pipe, and the ceramic membrane concentration filtering device is communicated through pipelines with a concentrated solution storagetank and a waste residue storage tank which are installed on a bottom plate. By arranging the ceramic membrane concentration filtering structure, the purposes of accurate filtration and efficient concentration in the traditional Chinese medicine extraction process can be achieved.

The invention provides a dual-transverse parallel diverting low impact threshing separator comprising a primary threshing feeding unit, a diverting threshing unit I, and a diverting threshing unit II; the outlet of the primary threshing feeding unit is provided with A B grass exits; the inlet of the diverting threshing unit I is provided with A B feeding ports; two ends of the outlet of the diverting threshing unit I are respectively provided with an A exit and a B exit; two ends of the inlet of the diverting threshing unit II are provided with an A inlet and a B inlet; the outlet of the diverting threshing unit II is provided with A B grass exits; a flow cutting roller cover plate of the primary threshing feeding unit comprises a flow cutting roller cover plate A portion and a flow cutting roller cover plate B portion; diverting roller I cover plates of the diverting threshing unit I comprise a diverting roller I cover plate A, a diverting roller I cover plate B and a diverting roller I cover plate C; diverting roller II cover plates of the diverting threshing unit II comprise a diverting roller II cover plate A and a diverting roller II cover plate B. The dual-transverse parallel diverting low impact threshing separator is small in power consumption, low in broken rate, low in threshing roller impact, and low in vibration.

The invention relates to the technical field of automobile transportation, in particular to a multi-space cold chain transportation carriage based on different-temperature refrigeration. The carriage comprises a refrigerator, a carriage, two doors, a processor and a plurality of temperature sensors; the refrigerating machine comprises a compression outer unit and an air outlet inner unit, and a heat preservation protective cover is fixedly connected to one side outside the compartment; a plurality of delivery pipes are arranged on one side of the heat preservation protective cover, a plurality of air outlet holes are formed in one side of the compartment, the delivery pipes are fixed in the air outlet holes, a plurality of air return holes are formed in one side of the compartment, the delivery pipes are fixed in the air return holes, and automatic flow control devices are arranged on the inner sides of the delivery pipes. According to the invention, a separation door A, a separation door B, a connecting seat A, a connecting seat B, a door locking piece, the transfer pipe, a first sliding piece, a second sliding piece, a lifting piece, a precise motor and the temperature sensors are arranged. The carriage has the functions of multi-space transportation, quick connection, quick disassembly, automatic flow control, automatic constant temperature, automatic temperature regulation and the like.

The invention relates to a composite membrane with a middle layer for forward osmosis of an organic solvent as well as a preparation method and application of the composite membrane. The composite membrane comprises a supporting layer, the middle layer and a compact separation layer, the material of the supporting layer comprises polyimide, the material of the middle layer comprises a cyclodextrinsupramolecular polymer, and the separation layer is made of polyamide. The composite membrane is used for forward osmosis treatment or recovery of an organic solvent system. Compared with the prior art, the invention has the advantages of high organic solvent resistance, high solute rejection rate in the forward osmosis process of the organic solvent and the like.

The invention relates to a preparation method of a protein-printed polymer of carboxymethyl chitosan and chitosan, belonging to the field of polymer chemistry and protein selective adsorption and separation. The preparation method is characterized by comprising the following steps of: (1) preparing carboxymethyl chitosan as a chitosan derivative; (2) preparing a blend solution of the carboxymethyl chitosan and the chitosan; (3) preparing polymer spherical particles embedded with protein; (4) crosslinking the polymer spherical particles embedded with the protein; and (5) eluting template protein to obtain the protein-printed polymer of the carboxymethyl chitosan and the chitosan. The protein-printed polymer of the carboxymethyl chitosan and the chitosan has good capacity of selectively absorbing and separating the template protein and good reusable performance, meanwhile, the preparation method has the advantages of high simplicity, easy control, mild preparation condition and low cost.

The invention relates to a preparation method of a hollow fiber organic gas separation membrane. The preparation method comprises following steps: 1, preparation of a membrane casting solution; 2, base membrane treatment; 3, filled membrane preparation; and 4, thermo-crosslinking. The hollow fiber organic gas separation membrane with organic gas separation capacity is prepared via the above steps finally. The preparation method is simple and continuous in process; the prepared hollow fiber organic gas separation membrane is high in strength, flux, and pressure resistance, low in mass transfer resistance, and stable in membrane performance; both internal pressure operation and external pressure operation can be adopted by the hollow fiber organic gas separation membrane; and the hollow fiber organic gas separation membrane can be applied in the fields of VOC recycling, industrial exhaust gas treatment, organic gas mixture separation, and other petrochemical, biological, pharmaceutical, and energy fields with requirements on high performance organic gas separation membrane preferably.

The invention relates to an elevator. The elevator comprises an operation portion (2) and a hand-held portion (1) which are coaxially connected successively from front to back. The front end of the operation portion (2) is laterally bended to form a hook-shaped head (3). An included angle formed by the hook-shaped head (3) and the operation portion (2) is 90 DEG. A cutter knife (4) is formed at aninner side of the included angle formed by the hook-shaped head (3) and the operation portion (2). A blade of the cutter knife (4) is parallel to an extension direction of the hook-shaped head (3). The elevator has cutting and separating functions and can be used for separation of important blood vessels and nerves and sharp incision of superficial tissues, and the number of operating apparatusesin a narrow surgical space is reduced. The cutting blade is formed at the inner side of the hook-shaped head of the elevator, the cutting edge is positioned below the hook-shaped head, and the cutting direction is consistent with the axial direction of the operation portion, thereby facilitating operation in a narrow and long space. Requirements of a deep skull base surgery can be satisfied.

The invention relates to the technical field of analytical testing, in particular to a device for ion generation, transmission and mass spectrometry of a low-vacuum system, which comprises an ion source, a primary ion transmission system, an ion mobility spectrometry, a secondary ion transmission system and an ion mass analyzer. A vacuum system of the device has a multi-stage vacuum differential function; wherein the ion source is placed in a chamber with a lower vacuum degree, sample ions to be detected generated by the ion source are efficiently transmitted to the ion mobility spectrometry through the primary ion transmission system and enter the secondary ion transmission system to be efficiently transmitted to the ion mass analyzer after being separated by the ion mobility tube; the device system can improve the ion generation efficiency and the ion transmission efficiency and realize the separation of the ion isomers, thereby improving the ion separation efficiency, the ion transmission efficiency and the detection sensitivity of the whole system.

A non-equilibrium enrichment and measurement method for ultra-trace lead and cadmium ions in beverages. A dialysis bag is made of cellulose acetate dialysis membrane, and the binder sodium alginate is put into the dialysis bag, soaked and purified in deionized water; the purified The sodium alginate solution was made into a solution, and the sodium alginate solution was taken according to the volume of the collection device and put into the collection device, and the collection device was sealed with cellulose acetate dialysis membrane, and after enrichment and sampling in a liquid drink, the concentration of the binder was determined. The cumulative amount of lead ions and cadmium ions, and finally calculate the concentration of heavy metal cations in the drink. The advantages are: the method can in-situ non-equilibrium separation and enrichment of lead ions and cadmium ions in beverages, reduce matrix interference, and accurately measure ultra-trace lead ions and cadmium ions in liquid beverages.

The invention belongs to the technical field of plasma separation membranes, and relates to a preparation method of a plasma separation membrane. The invention discloses a membrane with a plasma separation function, which is prepared on the basis of a membrane separation technology. The preparation method comprises the following steps: synthesizing a diamino chitosan-graphene oxide hybrid material, enabling the hybrid material to deposit a membrane on an aluminum oxide hollow fiber support body through a vacuum suction filtration method, and adjusting the membrane structure by controlling conditions such as concentration and deposition time of the hybrid material, so as to achieve the purpose of separating plasma. The preparation method is simple in process, relatively low in cost and good in separation effect, and has a prospect of large-scale process production.

The invention relates to a biogas tank with an oil-water separation function. The biogas tank comprises a casing, a connecting pipe and a fermentation chamber. The casing is internally provided with acrushing mechanism, and a separating mechanism is arranged in two sides of the fermentation chamber respectively. The crushing mechanism comprises a first motor, a transmission belt and two crushingassemblies. Each crushing assembly comprises a driving wheel, a connecting shaft and a crushing wheel. The separating mechanism comprises a lifting assembly and a gripping assembly. The gripping assembly comprises a fixing plate, a driving unit, a moving plate, a connecting rod, an adsorption plate and two limit plates. The driving unit comprises a second motor, a driving gear and two driven units. The biogas tank with the oil-water separation function can separate oil and water preliminarily through the separating mechanism, so that garbage in the biogas tank can be more easily decomposed, and the practicability of the biogas tank can be improved. The garbage is crushed by the crushing mechanism, so that the garbage is more easily degraded, and the fermentation efficiency of the biogas tank is improved.

The invention discloses a superhydrophobic multifunctional membrane and a preparation method thereof and an application of the superhydrophobic multifunctional membrane in oil-water separation. According to the invention, a nonwoven fabric material is horizontally placed in a crystallizing dish filled with perfluorodecyl trichlorosilane (POTS), the POTS vapor is diffused by a silylation reaction between POTS and a hydroxyl group on the nonwoven fabric and is reacted at the bottom of the nonwoven fabric membrane, and a hydrophobic surface is formed; a fabric sample is immersed in a mixture of asmall amount of TMSPMA, acetic acid and THF to form a double-bond surface, and the hydrophilic surface of the nonwoven fabric is modified with methacryloxypropyltrimethoxysilane (TMSPMA); and subsequently, poly[2-(N,N-dimethyl amino)ethyl methacrylate] (PDMAEMA) is grafted to prepare the material for rapid oil-water separation. The superhydrophobic multifunctional membrane can be widely used in sewage processing and emulsion separating aspects.

The invention relates to an extraction and separation device, in particular to a multi-linkage reciprocating extrusion type trace extraction-separation integrated device and a using method. The device comprises a pipe frame assembly, a lifting assembly rotating shaft and a support, the pipe frame assembly comprises side guide rods located at the two sides and a pipe frame connected between the two side guide rods, an extraction pipe is arranged on the pipe frame, the extraction pipe is a place for extraction and separation, the lifting assembly comprises a sliding block connected between the two side guide rods, a stirring and extruding column is connected to the sliding block, the sliding block can slide up and down along the side guide rods so as to drive the stirring and extruding column to enter and exit the extraction pipe, and the outer sides of the side guide rods are connected to the support through rotating shafts. The pipe frame assembly and the lifting assembly can synchronously swing through the rotating shaft, the stirring and extruding column enters and exits the extraction pipe to achieve extraction in the vertical state of the extraction pipe, and the stirring and extruding column enters the extraction pipe to achieve separation after extraction in the inclined state of the extraction pipe.

The invention relates to an offshore wind power generator with a separating function. The offshore wind power generator comprises a seabed anchor, connecting piles, a base, a floating body, a tower tube, a power generating unit, a driving mechanism, a first fixing mechanism and a second mechanism, wherein the first fixing mechanism comprises a supporting rod, a push rod, a first rack, a second rack and a circular gear, the second fixing mechanism comprises a force sensor, a winding engine and a stay cord, and the driving mechanism comprises blades, a flange disc and a transmission shaft. According to the offshore wind power generator with the separating function, in normal circumstances, the tower tube of the wind power generator is fixed in the base, and when the sea level extremely rises due to conditions such as rainstorms and tsunami, the tower tube can float on the sea surface under the action of the floating body. In addition, the wind power generator is provided with an anti-collision mechanism, and a protective effect on the wind power generator itself and a ship can be achieved when the ship is collided.

The invention discloses a low-emission integrated adsorbent on-site regeneration device, which includes a steam generator, a desorption tower, a waste heat recovery device and a condensate separation tank connected in sequence; the steam generator is used to provide heat for the desorption tower steam; the desorption tower is used for steam desorption of the saturated adsorbent, and generates adsorbent and water-oil vapor; the waste heat recovery device is used for recovering the waste heat of the water-oil vapor, and condenses to generate water-oil condensate; The condensate separation tank is used to separate the water-oil condensate to generate recovered water and recovered oil; the waste heat recovered by the waste heat recovery device is used to heat the recovered water, and the heated recovered water is provided to the steam generator. The invention adopts the hot steam desorption method and has good economical efficiency; the waste heat recovery device is used for waste heat recovery, which can achieve rational utilization of resources, energy saving and environmental protection.

The invention relates to the technical field of polymer materials, and specifically discloses a hydrophobic slurry and a preparation method and application thereof. The hydrophobic slurry is a Pickering-type hydrophobic slurry, and the hydrophobic slurry includes solid particles, water and solid hydrophobic substances, and the solid hydrophobic substances are embedded in the solid particles in the form of particles. The present invention uses the Pickering emulsion type particle emulsification technology to embed the particles of solid hydrophobic substances in solid particles to form spherical particles, and prepare a milky white hydrophobic slurry with uniform and stable properties, which can provide high hydrophobicity for the substrate to be applied. and water resistance. The present invention also provides a method for preparing the above-mentioned hydrophobic slurry, which is simple and convenient for industrial production. The present invention further provides a hydrophobic paper comprising the above-mentioned hydrophobic slurry, which is easy to prepare and has good hydrophobic performance.

The invention provides a combined type sealing cover and an open-type axial flow threshing system using the same, and relates to sealing covers and open-type axial flow threshing systems. The combined type sealing cover and the open-type axial flow threshing system using the same aim at resolving the problems that a sealing cover in an existing threshing system can not achieve multiple purposes, workload is heavy, and only a single variety of crops can be harvested. A front sealing cover shell of the combined type sealing cover is provided with an impurity and residue recovery system connection port, a front sealing plate, the front sealing cover shell, a rear middle sealing cover shell and a rear sealing plate are connected in sequence, rear two side sealing cover shells are installed on two sides of the rear middle sealing cover shell, a plurality of front guide vanes are installed on the front sealing cover shell in an inclined mode, and a plurality of rear middle guide vanes are installed on the rear middle sealing cover shell in an inclined mode. A chained coupling and a transmission reversing gearbox of the threshing system are sequentially installed at the rear end of at least one set of axial flow threshing device. The combined type sealing cover and the open-type axial flow threshing system using the same are used for threshing the crops.

The invention belongs to the technical field of material science and engineering and particularly relates to a functional porous cement based composite material and a preparation method thereof. The composite material is prepared from the following raw materials: cement, aggregates, water, additives and a catalyst in a ratio of (1-1.2):(0.5-0.6): (0.2-0.8):(0-0.04):(0-0.2), wherein the content of the catalyst is not zero and the catalyst is a compound of titanium dioxide and graphene oxide. The invention provides the functional porous cement based composite material which not only has a separating function, but also has the characteristics of being photocatalytic, pollution-resistant and self-cleaning. The functional porous cement based composite material is simple in preparation process and low in cost and has wide application prospect in the technical industry of environmental protection and management.

The invention discloses an oil-water separation structure for a valve and further discloses an implementation method of the oil-water separation structure for the valve. The oil-water separation structure for the valve comprises a main oil-water separation mechanism and a bearing and water discharging mechanism, and the bearing and water discharging mechanism is installed at the bottom end of themain oil-water separation mechanism. According to the oil-water separation structure for the valve, after oil-water mixed liquid is poured into the inner cavity of the valve body through a liquid injection port, an explosion-proof motor is used for driving a rotating shaft and driving a driving wheel to rotate at a high speed, a driven rotation rod connected with one end of a driven wheel drives bent type roller cutters to rotate the oil-water mixed liquid flowing into a separation working chamber at a high speed, and different centrifugal forces is generated so as to separate oil from water;since the density of the oil is smaller than that of the water, the separated oil is discharged into the upper end of the inner cavity of the valve body, and the water flows into an inner cavity of abearing outer frame communicated with the valve body. Compared with a common valve, the valve has the oil-water separation function, and the situation that when the valve is used, since introduced oiland water are mixed and cannot be separated, the oil and water mixture is discharged into outside water and causes pollution can be prevented.

The invention relates to the field of water retaining dams, in particular to a water conservancy and hydropower station water retaining dam with a sediment separation function. Comprising an intercepting body, water passing bodies, water inlet channels, an inclined water channel, a sewer, a water outlet pipeline, a primary separation mechanism and a conveying mechanism, the water passing bodies are arranged on the rear side of the intercepting body, the water inlet channels are arranged in the water passing bodies and the intercepting body, the inclined water channel is obliquely arranged at the rear end of the water inlet channel in a communicating mode, and the sewer is arranged at the lower end of the inclined water channel in a communicating mode; the water outlet pipeline is connected to the rear end of the sewer, a preliminary separation mechanism is connected to the interior of each inclined water channel, and a conveying mechanism used for conveying silt separated by the multiple preliminary separation mechanisms is connected to the rear ends of the multiple water passing bodies.