63results about How to "Efficient replacement" patented technology

This utility model relates to the field of high-efficiency dispensing equipment technology, and in particular to a glue cartridge replacement mechanism and replacement kit. The key technical points include: a base; a dispensing valve fixedly connected to the base, the dispensing valve having a plug-in module with a glue outlet channel, the plug-in module being used to plug into the bottom end of the glue cartridge, and when the glue cartridge is plugged into the plug-in module, the glue outlet channel connecting with the glue outlet at the bottom end of the glue cartridge; and a glue pressure assembly, which is vertically and vertically mounted on the base and located above the dispensing valve, the glue pressure assembly having an air inlet channel, and the glue pressure assembly being movably connected to the top end of the glue cartridge to connect or disconnect the air inlet of the glue cartridge. This application can significantly improve the glue cartridge replacement efficiency.

This application discloses a method for preparing ultra-high purity citric acid monohydrate based on supercritical CO2, belonging to the field of citric acid preparation technology. The method includes the following steps: dissolving citric acid monohydrate in an organic solvent to prepare a citric acid solution; spraying the citric acid solution into a supercritical CO2 environment to crystallize the citric acid using the supercritical anti-solvent effect; performing dynamic washing with pure supercritical CO2; and obtaining ultra-high purity citric acid monohydrate crystals after depressurization and drying. The citric acid monohydrate product prepared by this method has high purity, high light transmittance, low total metal ion content, controllable crystal habit, and low organic solvent residue, meeting the stringent requirements of high-end applications such as electronic and pharmaceutical grades.

This utility model discloses a diesel engine return oil pressure regulating control device, belonging to the field of diesel engine fuel system control technology. It includes a dry pump, a pressure regulating valve, a pipeline assembly, and a control circuit assembly. The pipeline assembly uses engineering pipelines. The pressure regulating valve is used to regulate the pressure at the dry pump inlet to ensure that the engine return oil pressure meets project requirements and that the return oil pipeline system is balanced. The control circuit assembly includes two power supply systems, a relay, and a benchtop control module. The power supply system consists of a regulated power supply and a power line. One end of one power supply system is connected to the negative terminal of the dry pump, and the other end of the normally open contact of the relay is connected to the positive terminal of the dry pump. One end of the other power supply system is connected to one end of the relay coil, and the other end of the relay coil and the other end of the power supply system are respectively connected to the switching terminals of the benchtop control module. This utility model has the technical advantages of precise pressure regulation, strong adaptability to operating conditions, convenient installation and maintenance, and high system reliability.

This utility model discloses a conical bidirectional mixing head for cement mixing pile construction, comprising a hollow outer rod, within which a hollow inner rod is nested. A vertical main shaft is fixedly connected to the end of the inner rod, which serves as the mixing shaft and is a hollow shaft with a closed conical end. The inner rod is coaxially fixedly connected to the top of the vertical main shaft, and their inner cavities are interconnected. Straight blades and a grouting pipe communicating with the inner cavity of the vertical main shaft are vertically mounted on the vertical main shaft. The straight blades are the main mixing blades. A positioning sleeve is fitted onto the vertical main shaft. The outer rod and the positioning sleeve are fixedly connected through the free end of a C-shaped mixing blade, which is a secondary mixing blade. This mixing head achieves bidirectional rotation while improving and optimizing its structural form, resulting in stronger mixing capacity and anti-drilling characteristics, which is beneficial to the stability and uniformity of pile formation and can improve construction efficiency to a certain extent.

The utility model relates to the technical field of energy storage battery installation, and discloses a convenient installation structure of a household energy storage battery, the convenient installation structure comprises an installation base and a battery main body, the outer wall of the installation base is provided with an installation assembly used for rapidly fixing the battery main body, and the installation assembly comprises two moving plates moving relatively and a gear; the two movable plates are arranged on the mounting base, racks are welded to the outer walls of the bottoms of the two movable plates, the gear is rotationally connected to the outer wall of the middle of the mounting base through a rotating shaft, and the two racks are meshed with the gear. The fixing column is quickly inserted into the fixing hole of the battery main body, the installation process is completed, professional tools and skills are not needed, compared with a traditional structure, the installation difficulty and time cost are remarkably reduced, a user can independently complete installation, the problems of inconvenient installation and high cost are effectively solved, and the installation of the household energy storage battery is simpler and more feasible.

The utility model discloses a kind of self-adapting assembly component clamp device, comprising: mounting bracket;Fixed chuck, fixed on the mounting bracket;Movable chuck, for cooperating with the fixed chuck and clamping workpiece;Outer tube, set on the mounting bracket;Slide bar, slidingly set in the outer tube, the slide bar moves under the direction of first gas pressure towards the fixed chuck;The driving block and the movable chuck between there is mutually matched slope;Cylinder, for driving the driving block moves after the slide bar is locked and cooperates, to drive the movable chuck moves towards the direction of the fixed chuck by the cooperation of the slope.The technical scheme not only improves the compatibility of fixture to diversified products, and through accurate secondary clamping, the clamping accuracy and reliability in assembly process are guaranteed, so as to improve production efficiency and product quality, effectively solve the problem proposed in background art.

The utility model discloses a fracturing flow-back fluid multistage cyclone desanding device which comprises a processing support, a plurality of filter tanks are arranged on the processing support, the filter tanks are installed on the processing support in a step shape, filter rollers are arranged on the inner sides of the filter tanks, a pair of inclined blocks are arranged on the filter tanks, and the inclined blocks are arranged on the inner sides of the filter tanks. The utility model relates to the technical field of flowback fluid treatment, adopts the multi-stage filtering design, adopts the plurality of filtering basins which are installed in a step shape, and is matched with the filtering drum, the filtering nets and the filtering plates on the U-shaped inclined blocks, so that the flowback fluid can be effectively filtered, and the flowback fluid can be efficiently and efficiently treated by the filtering drum, the filtering nets and the filtering plates on the U-shaped inclined blocks and the like. According to the flow-back liquid filter, graded fine filtration can be carried out according to the characteristics of impurities with different particle sizes in flow-back liquid, the filtration precision is greatly improved, various solid substances, fine particles and suspended solids are effectively removed, and it is ensured that the treated liquid meets the high-standard recycling or discharging requirement.

The utility model discloses a paint mist filtering device. The paint mist filtering device comprises a filtering unit closed room and a paint mist capturing trolley which can be flexibly pushed into the filtering unit closed room, the filtering unit closed room comprises a cabinet body and two cabinet doors arranged on one side of the cabinet body; a plurality of fluency strips are hinged to the two side walls of the interior of the cabinet body. A plurality of partition plates are arranged in the paint mist capturing trolley, storage areas are arranged among the partition plates, and filter cotton is placed in the storage areas; a plurality of connecting blocks are arranged on the outer side of the top of the paint mist capturing trolley, a rubber coating wheel is connected to any connecting block in a matched mode, and the rubber coating wheel is matched with the fluent strip; the paint mist capturing trolley is flexibly pushed into the filtering unit closed room by arranging fluent strips in the filtering unit closed room and matching with rubber coating wheels on the paint mist capturing trolley, the filtering cotton is placed in the storage area to filter paint mist, and when the filtering cotton needs to be replaced, the paint mist capturing trolley is pushed out to achieve efficient replacement of the filtering cotton.

The invention relates to the technical field of dispensing equipment, and provides an automatic valve and glue changing device applied to dispensing equipment, comprising: a back plate main body, one side of which is provided with a back fixing plate, the other side of which is provided with a driving hinge, and which is internally provided with an air chamber and a movable push rod communicated by an air passage; a clamping hook clamped with the driving hinge is arranged on one side of the valve main body, an electromagnet is arranged on a mounting seat on the other side of the valve main body, and the bottom of the valve main body is connected with a runner; the cylinder fixing support is provided with a containing part, an adapter and a metal plate capable of being attracted by the electromagnet. The movable push rod can be driven by air pressure to push the drive hinge to stretch out and be clamped with the clamping hook, and therefore the valve body can be rapidly locked. The electromagnet can adsorb the metal plate to realize rapid combination of the rubber sleeve; the device has the characteristics of modular structure, reliable locking, quick replacement, good sealing performance and high integration level.

The present application relates to a kind of high-precision cold-rolled screw with medium carbon steel hot rolled wire rod in metallurgical technology field, preparation method and application.The present application is aimed at solving the technical problems of low first processing qualified rate of cold-rolled screw caused by poor material organization uniformity and low purity.The chemical composition of the wire rod according to the present application is as follows: C 0.52-0.58%, Si 0.15-0.35%, Mn 0.70-0.90%, Cr 0.10-0.35%, Al 0.015-0.045%, Ti≤0.0025%, [O]≤0.0015%, [N]≤0.0060% and the like, with the balance being Fe.The preparation method of the present application obtains uniform organization with cross-section hardness range ≤20HV through the combined action of narrow component design, continuous casting end electromagnetic stirring, high temperature diffusion annealing and "fast first and slow later" controlled cooling process.The present application is mainly used for manufacturing high-precision ball screw, and the finished product precision reaches more than 5 levels, with first cold-rolled forming qualified rate ≥85%.

The present application relates to the technical field of biotechnology, and particularly relates to a CRISPR / SuCas12a2-based gene editing system and application thereof. The present application constructs a high-efficiency counter-selection recombination editing tool by exploring the counter-selection potential of CRISPR-SuCas12a2 and combining it with lambda recombinase. The method can complete high-efficiency recombination editing of genes through a double-plasmid and single-plasmid system carrying SuCas12a2 and lambda recombinase, and the efficiency is greatly improved compared with the current recombination editing method based on lambda recombinase. Compared with the previous dependence on the specific cleavage of target double-stranded DNA by CRISPR-Cas protein to promote the effect of recombination editing, the efficiency is also obviously improved, and the method has the advantages of more transformants and low probability of immune escape. The plasmid construction, recombination editing and plasmid elimination operations can be completed within one week. The above functions supplement a powerful tool for gene recombination editing.

This invention discloses an integrated device for purifying impurities in electrolytically produced gases and enriching carbon dioxide based on pressure swing adsorption (PSA), belonging to the field of gas separation and new energy utilization technology. The device includes a water electrolysis unit, a PSA unit, and a control unit. The water electrolysis unit uses renewable energy to electrolyze water to produce crude hydrogen. The PSA unit comprises at least two sets of adsorption towers connected in parallel, filled with a composite adsorbent that selectively adsorbs oxygen and carbon dioxide. The control unit uses time-series control to alternately operate the adsorption towers between a "purification mode" and an "enrichment and regeneration mode." In purification mode, the adsorption towers remove oxygen impurities from the crude hydrogen; in enrichment and regeneration mode, the adsorption towers adsorb carbon dioxide from an external gas source and output enriched gas through vacuum desorption. This invention achieves high integration and low energy consumption by time-sharing reuse of the same set of adsorption towers, making it particularly suitable for preparing raw material gas for hydrogen autotrophic microorganisms to synthesize single-cell proteins (air proteins).

The utility model relates to the technical field of solid-liquid separation, in particular to a solid-liquid separation device for environmental engineering, which comprises a box body, a round opening is arranged at the top of the box body, a circular ring fixing frame is longitudinally and fixedly connected in the box body, a filter cartridge is arranged in the circular ring fixing frame, a drain pipe is fixedly connected to the side edge of the box body, and the drain pipe is fixedly connected with the top of the box body. And a feeding hopper is arranged at the top of the box body. The filter cartridge is arranged in the circular ring fixing frame, the feed hopper is connected with the box body through the fixing assembly, and the bayonet lock, the pull rod, the spring and other structures of the fixing assembly are convenient to operate, so that when separation holes of the filter cartridge are blocked greatly and need to be cleaned or are damaged after being used for a long time, the separation holes can be cleaned conveniently. According to the solid-liquid separation device, the feeding hopper can be conveniently disassembled and the filter cartridge can be conveniently taken out, so that the filter cartridge is disassembled and effectively cleaned or replaced, the service life of the whole solid-liquid separation device is prolonged, and the problem that a filter part in an existing similar device is difficult to disassemble and maintain is solved.

The utility model relates to battery installation shell technical field discloses the gasket protruding structure of battery box, including installation shell and the battery box of being installed in the inside of installation shell shell body, the both sides of the shell body of installation shell are provided with the lock catch part in symmetrical form, the both sides of the box body of battery box are provided with the lock catch groove of buckle with lock catch part in two -two symmetrical form. The utility model in installation uses, through pre -installing in the door side frame near indoor in installation shell, using its lock catch part and the abutment lock catch of lock catch groove on battery box, forms the side door frame type assembly work, provides power supply for electronic lock, it has simple and convenient external installation performance, and the user daily replacement battery box is convenient, and the user only needs to pull out battery box from installation shell, can carry out daily replacement work to battery box, and the operation is simple and convenient, and the replacement efficiency is more efficient.

The utility model provides a kind of ammonia distillation wastewater cooling equipment, belong to ammonia distillation wastewater cooling technical field, including, cooling shell, the cooling shell is cylindrical, cooling shell is used for the cooling main body of ammonia distillation wastewater;Positioning drive assembly, the positioning drive assembly is installed at the top of cooling shell, the positioning drive assembly includes support and drive unit, the drive unit is installed on support;Waste water transmission component, the waste water transmission component is vertically installed in cooling shell from top to bottom;Water replenishment component, the water replenishment component is installed in the side of cooling shell;Discharge pipe, the discharge pipe is installed in the bottom of cooling shell middle, valve one is installed on the discharge pipe.Besides the utility model solves the problem that ammonia distillation wastewater is relatively stationary when cooling and cold water is slowly self-heat pipe position to spread outside for the heat absorption of waste water, low efficiency and heat energy is easy to waste.

The invention relates to the technical field of soil improvement and crop disease prevention and control. The invention provides a zinc-silicon synergistic soil conditioner and a preparation method and application thereof.The zinc-silicon synergistic soil conditioner is prepared from, by mass, 5-8 parts of citric acid chelated zinc, 5-8 parts of citric acid chelated zinc, 5-8 parts of citric acid chelated zinc, 5-8 parts of citric acid chelated zinc, 5-8 parts of citric acid chelated zinc, 5- 25 to 40 parts of potassium silicate; 30 to 45 parts of humic acid; 5 to 10 parts of soluble starch; and the balance of deionized water. According to the zinc-silicon synergistic soil conditioner, the pH and the alkalization degree of soda saline-alkali soil are reduced through humic acid, and the rhizosphere microenvironment is improved; the citric acid chelated zinc provides quick-acting zinc, the potassium silicate continuously releases silicon, and the citric acid chelated zinc and the potassium silicate keep high bioavailability under the protection of humic acid; the soluble starch regulates nutrient release and prevents precipitation and inactivation. Field application shows that the morbidity of the rice red blight in the soda saline-alkali soil can be reduced to 5% or below, and synergistic interaction of soil improvement and disease prevention and control is achieved.

This utility model provides a lithium battery explosion-proof formation machine, comprising: a housing, within which an explosion-proof formation system is installed; the explosion-proof formation system includes a negative pressure extraction unit, a gas manifold unit, a vacuum control unit, a gas detection unit, and an inert gas replenishment unit; the negative pressure extraction unit is connected to the gas manifold unit, the gas manifold unit is connected to the vacuum control unit, and the inert gas replenishment unit is connected to the gas manifold unit; the gas detection unit is located in the gas flow path. By setting up the explosion-proof formation system, functional units such as negative pressure extraction, gas manifold, vacuum control, gas detection, and inert gas replenishment are integrated, forming a complete explosion-proof protection system that can effectively prevent the risk of combustion and explosion during the formation process.

This invention discloses a dustproof belt conveyor for mining, belonging to the field of belt conveying. It includes a conveying mechanism comprising a first dust cover, with a winding mechanism at one end. The winding mechanism includes a top laying mechanism and two sets of side laying mechanisms. The top laying mechanism includes a first winding roller, and the side laying mechanisms include second winding rollers located at both ends of the first winding roller. A first flame-retardant dustproof felt is wound onto the first winding roller, and a second flame-retardant dustproof felt is wound onto the second winding roller. The winding mechanism also includes a clamping assembly slidably disposed on the first dust cover, used to clamp the first and second flame-retardant dustproof felts respectively. This invention, by providing a winding mechanism at one end of the conveying mechanism for laying and winding the flame-retardant dustproof felt, allows for the laying of flame-retardant dustproof felt on the top and side shells inside the conveying mechanism. The flame-retardant dustproof felt is laid in a U-shape inside the conveying mechanism.

The utility model discloses a kind of quick-mounting screen setting grinder, including grinder body and quick-mounting screen, quick-mounting screen is introduced from the side end installation of grinder body, the bottom position of grinder body side end is provided with screen pressing handle, grinder body side end top is equipped with screen positioning plate and fastener is connected on screen positioning plate, locking block is fixedly installed on the bottom net body of quick-mounting screen, fixed aperture is set on the upper end net body of quick-mounting screen. Through the above mode, the utility model can efficiently replace screen, the bottom of grinder body is increased screen pressing handle, quick-mounting screen is provided with fixed aperture and locking block, when screen is installed, quick-mounting screen is slid to bottom along screen pressing handle, after screen pressing handle is pressed down, front part is lifted and hits locking block, then quick-mounting screen is pulled to the screen positioning plate of equipment, quick-mounting screen can be fastened using screw, both ends of screen are firmly fixed by the above ingenious design, and the fixing mode is quick and simple, firm and reliable.

The lifting device comprises at least one continuous anode, the periphery of the continuous anode is sleeved with a clamping frame, a plurality of anode guide rods are arranged between the clamping frame and the continuous anode, and a pressing mechanism enabling the anode guide rods to make contact with the continuous anode is installed on the clamping frame. A lifting mechanism is arranged at the upper end of the clamping frame and comprises a first driver, a second driver and a lifter, a lifter connector connected with the second driver is arranged on the upper portion of an output shaft of the lifter, an anode bus is arranged on the outer side of the anode guide rod, and a soft belt connected with the anode bus and the anode guide rod closest to the anode bus is arranged between the anode bus and the anode guide rod. According to the invention, the synchronism of the continuous anodes is ensured, the accuracy of electrode distance and cell voltage control is improved, the thermal balance of the electrolytic cell is maintained, the energy consumption is reduced, the current efficiency is improved, and the technical problems in controlling the electrode distance and regulating and controlling the distance between an anode guide rod and an aluminum oxide crust are thoroughly solved.

The utility model discloses an accessory detachable wisdom fire helmet and command system belong to fire helmet technical field. An accessory detachable wisdom fire helmet, including cap shell, still include: bolt nut structure, face guard, accessory attachment track and a plurality of T shape adjustable elastic clamping seat, each adjustable elastic clamping seat all is provided with detachable function module, wherein, detachable function module is one of processor module, positioning module, image module, combustible gas detection module and fall detection module, the utility model can realize the free combination to different accessory module, satisfy detachable easy replacement's use demand, realize the automatic acquisition of on -the -spot image data, environmental data, firefighter data etc. information, carry out monitoring and early warning, and carry out real -time communication through bone conduction earphone, improve the scientific nature and practicality of decision, further enhance the scientific nature of on -the -spot rescue action and guarantee firefighter life safety.

The scheme belongs to the technical field of gas analysis, and particularly relates to an analysis method of fluorine-containing gas. For pure fluorine gas analysis, the method comprises the following steps S10-S80: step S10: closing first valve, second valve, third valve, fourth valve, fifth valve and eighth valve, and opening first pressure reducing valve, second pressure reducing valve and third pressure reducing valve; step S20: slowly opening sixth valve and second valve in sequence, and closing sixth valve and second valve after 10 min of emptying; comprising the following steps K10-SK90: step K10: closing fifth valve, second valve, eighth valve, sixth valve, third valve, fourth valve and first valve, and opening first pressure reducing valve, second pressure reducing valve, third pressure reducing valve and seventh valve. The method is simple and convenient to operate, has high controllability and safety performance, air in the pipeline is sucked into the injection port of the Venturi tube, and then the air is discharged from the outlet of the Venturi tube, so that the air in the pipeline is efficiently and completely replaced, and the analysis result is more accurate and real.

This application relates to an automatic dredging device for leachate grating in landfills, comprising a main mounting plate, mounting columns at the four corners of the main mounting plate, dredging components mounted on the mounting columns, and a drive component mounted on the main mounting plate. The dredging components include a sliding plate slidably connected to the mounting columns, a plurality of dredging columns mounted on the sliding plate, and a fixing component mounted on the sliding plate. The sliding plate has through holes for the dredging columns to pass through. The fixing component includes a fixing rod, a fixing plate, and fixing bolts. Each dredging column has a fixing hole for the fixing rod to pass through, and the fixing rod abuts against the side of the sliding plate closest to the main mounting plate. The fixing bolts fix the fixing plate to the sliding plate. Each dredging column has a mounting ring at its end near the sliding plate, and a disassembly plate is located on the side of the sliding plate away from the main mounting plate. The disassembly plate allows the dredging column to pass through, and its two sides abut against the sliding plate and the mounting ring, respectively. This application improves the efficiency of replacing dredging columns.

The utility model relates to the technical field of soot blower, concretely is a sealing device of soot blower, including installation frame, connecting frame, power ware, jet pipe, support column and protection device, installation frame fixedly connected in the inside of connecting frame, support column is fixedly connected in the inside of installation frame, power ware installs in the surface of support column, jet pipe is connected in the surface of support column slidingly, jet pipe is fixedly connected in one end of power ware, jet pipe is connected in the inside of installation frame slidingly, one end fixedly seted up of installation frame is provided with protection device, the protection device includes protection cover and spacing rod, spacing rod fixedly connected in one end of installation frame, the surface of jet pipe is connected with the cover of protection, the outer surface fixedly connected with two connecting blocks of protection cover, spacing rod is connected in the inside of connecting block slidingly. The utility model protection device has realized the sealing of jet pipe and furnace body, has improved the neatness of equipment to the environment.

The utility model relates to the technical field of highway car tire changing equipment, concretely to a kind of quick automatic dismounting pipe tire device for highway car, including base, mounting plate, rotating clamp, visual detector and three-dimensional mover, the mounting plate fixedly connected in the upper surface of base, the rotating clamp fixedly connected in the surface of mounting plate, the visual detector fixedly connected in the surface of mounting plate, the three-dimensional mover fixedly connected in the upper surface of base, the one side of three-dimensional mover close to rotating clamp is fixedly provided with replacement device, the replacement device includes pry plate and connecting block, the connecting block is arranged in one side of three-dimensional mover, the pry plate fixedly connected in the one side of connecting block away from three-dimensional mover, the one side of three-dimensional mover close to connecting block is fixedly connected with limit block. The utility model replacement device can replace pry plate, facilitate equipment to dismount different models of articles, improve the practicability of equipment.

The utility model relates to tea maker technical field, specifically disclose tea maker ultraviolet sterilization water route module, include: tea maker main part and assemble in the water tank of tea maker main part inside, set up the placing plate of tea maker main part one side, and set up in the disinfection lamp tube of water tank, one side inner wall of water tank fixed mounting has the mounting block, and the arc slot is penetrated in mounting block top side, the outside of disinfection lamp tube is equipped with the quartz sleeve, the outside upper end of quartz sleeve is equipped with the mounting ring, and the mounting ring outside and arc slot between are adapted, the utility model avoids using bolt long time soaking in water and leads to the problem of silk, alleviates personnel maintenance burden, lets disinfection lamp tube and quartz sleeve's replacement or maintenance process more efficient, easy, improves the practicality of sterilization module.

The present application relates to a kind of detachable replacement type middle louvre, comprising: main frame, first glass plate, second glass plate, spacer frame, movable frame, closed assembly and louvre assembly;Movable frame rotates to closed state, mounting frame is in contact with spacer frame, mounting frame, first glass plate, second glass plate and spacer frame are combined to form a sealed cavity, and louvre assembly is located inside the sealed cavity;Pressurizing component is set to one side of mounting frame, for applying pressure to mounting frame towards spacer frame;Movable frame rotates to open state, and mounting frame can be removed from limiting slot.Through unlocking and rotating movable frame, maintenance personnel can repair or replace louvre assembly, and movable frame is rotated to closed state again, and pressure is applied to mounting frame towards spacer frame by pressurizing component;So that mounting frame and spacer frame are more closely contacted, so that after replacing louvre assembly, the sealed cavity can still be restored to sufficient sealing state.

A kind of urban rainwater pipe network and river network hydrodynamic accelerated calculation method based on data-driven surrogate model, comprising: based on bidirectional long short-term memory (BiLSTM), graph attention network (GAT) and residual connection, data-driven surrogate model Deep-Drain is constructed, for simulating the simplified process of urban rainwater pipe network and river network water flow;Mechanism model is constructed to simulate one-dimensional hydrodynamic process under measured rainfall and different return period design rainfall, and process data set of rainwater pipe network and river network flow process is constructed, while training set, validation set and test set are divided;Optimal hyperparameter combination of Deep-Drain is found by using Bayesian optimization;The efficiency improvement effect of Deep-Drain is quantitatively analyzed by typhoon storm event;The present application realizes the effective improvement of the calculation efficiency of urban rainwater pipe network and river network flow simulation process.

The utility model discloses a dust falling device, which relates to the related technical field of dust falling and comprises a filter box, a dust monitor is arranged at the bottom of the inner wall of the filter box, the outer wall of one side of the filter box is connected with one side of a control box, and a display screen is arranged on the other side of the control box. Protective covers which are symmetrically distributed are arranged at the top of the filter box, fan blades matched with the protective covers are arranged in the protective covers, the input ends of the fan blades are connected with one end of a transmission shaft matched with the fan blades, and an alternating current motor is arranged above the transmission shaft. According to the dust falling device, the dust concentration in air in the filter box can be detected through the dust monitor, the display screen can directly display detection data, the rotating speed of the alternating current motor is automatically adjusted according to the dust concentration in cooperation with the control box, the dust falling effect is guaranteed, meanwhile, energy consumption is reduced, and the operation cost is optimized; and the two alternating current motors operate to drive the two fan blades to operate, so that dust-containing air can be efficiently sucked into the equipment for treatment.