308results about How to "Solve waste" patented technology

The embodiment of the invention relates to a database access system of a compound database. The system comprises a database service gateway, a request message queue, a feedback message queue, a message processing module, a cache message queue, a database management module, a user permission configuration table, an operation approval configuration table and the compound database, the database service gateway is respectively connected with the request message queue and the feedback message queue; the message processing module is respectively connected with the request message queue, the feedback message queue and the cache message queue; and the database management module is respectively connected with the cache message queue, the user permission configuration table, the operation approval configuration table and the compound database. Through the method, the waste rate of storage resources can be reduced, and the overall task processing performance of the database is improved.

The utility model relates to the technical field of emulsion pumps, and discloses a double back-suction type all-plastic emulsion pump which is of an all-plastic structure and comprises a pump body, a pressing head, a main column, an auxiliary column, a spring, a one-way ball valve, a piston and a back-suction rod. The main column is provided with a back suction cavity located between the inner wall of the main column and the outer wall of the auxiliary column and communicated with the pressing head. The piston movably sleeves the auxiliary column in a sealing manner, is movably connected with the inner wall of the pump body in a sealing manner, and is movably connected with the inner wall of the lower end of the main column in a sealing manner to seal and close the lower end of the back-suction cavity; and the upper end of the resorption rod is movably and hermetically nested in the secondary column. According to the double back-suction type all-plastic emulsion pump, a double back-suction structure or a back-suction structure can be formed between the main column and the piston and between the auxiliary column and the back-suction rod, materials of the pressing head can be quickly sucked back or back into the back-suction cavity and the inner cavity of the auxiliary column, the back-suction space is large, the back-suction efficiency is high, and the back-suction effect is good. The problem of waste or pollution caused by residual feed liquid after the liquid is discharged from the pressing head is solved, and the use is cleaner, more environment-friendly and more sanitary.

The invention relates to the technical field of petroleum pipeline machining, and discloses an energy-saving petroleum pipeline anti-corrosion machining device which comprises a base, a clamping device is arranged above the base and used for clamping and fixing a petroleum pipeline, and the bottom of the base sleeves and is slidably connected to the bottom of a supporting frame; a linear displacement mechanism is arranged between the supporting frame and the base, the bottom of the supporting frame is driven by the linear displacement mechanism to horizontally move along the bottom of the base, a cross beam is fixedly connected to the top of the supporting frame, and the central axis of the cross beam coincides with the central axis of the clamped and fixed petroleum pipeline. The end, facing the petroleum pipeline, of the cross beam is fixedly connected with a heating base, and the end face of the heating base is rotationally connected with a spraying device. Through the arrangement of the air channel and the spraying device, the spraying device is driven to rotate through cooperation of drying airflow power and paint spraying power, on one hand, uniform spraying of the spraying device is achieved, on the other hand, effective utilization of energy is achieved, and energy loss is reduced.

The invention discloses a CO2 circulating injection ironmaking method of a hydrogen-rich carbon circulating oxygen blast furnace, which comprises the following steps: heating CO2 separated and captured from top gas of the blast furnace to 2500 DEG C or above, and then circularly injecting into the blast furnace from a tuyere; and further purifying the residual CO and H2 in the top gas of the blast furnace to prepare a chemical product. The invention further discloses a CO2 circulating injection ironmaking system of the hydrogen-carbon-rich circulating oxygen blast furnace. The method solves the problems that the carbon emission reduction potential of a hydrogen-rich carbon circulating oxygen blast furnace process is not fully exerted, and CO2 separated and captured from top gas is not fully utilized.

The utility model discloses a cleaning device for high specific volume corrosion foil, which relates to the technical field of corrosion foil cleaning and comprises a cleaning box, a sealing door is fixedly connected to the side face of the cleaning box, and fixing plates are fixedly connected to two ends of one side of the cleaning box. The utility model relates to an anti-theft device. A first rotary drum, a second rotary drum and stirring blades, through the cooperation between a flow dividing pipe and a spraying pipe, when the device is used for cleaning the high-specific-volume corrosion foil, cleaning liquid can make full contact with the high-specific-volume corrosion foil, the high-specific-volume corrosion foil is soaked in the cleaning liquid, then the cleaning liquid is driven to flow, the high-specific-volume corrosion foil is washed, and the cleaning liquid in a cleaning box is pumped. The high-specific-volume corrosion foil is sprayed and cleaned, and the problems that when the high-specific-volume corrosion foil is cleaned, the high-specific-volume corrosion foil is only soaked in cleaning liquid, the cleaning efficiency is low, repeated cleaning is needed, and a large amount of cleaning liquid needs to be consumed are effectively solved.

The present invention relates to a growth device and a growth method of a silicon carbide single crystal by a liquid phase method, and belongs to the technical field of silicon carbide single crystal production. The growth device includes a growth crucible, a seed crystal rod fixed with a seed crystal, a laser rangefinder for determining the position of the growth raw material, a movable graphite block, a braking device, and a blocking graphite; a reserved hole is provided in the crucible cover of the growth crucible corresponding to the laser rangefinder directly below the light exit hole; at least four rows of holes are provided on the side wall of the growth crucible, and each row of holes is evenly spaced from top to bottom, and a hole is provided at the center of the bottom, and the movable graphite block is filled in the hole, and one end of the blocking graphite is embedded in the hole, and the other end is sleeved on the outer wall of the growth crucible; an opening is provided in the center of the blocking graphite for the braking device to pass through and connected to the movable graphite block, and the braking device is used to control the movable graphite block to move forward and backward relative to the growth raw material. The device of the present invention can realize the determination and adjustment of the high temperature line position before crystal growth, can weaken the self-circulating convection in the growth solution, and improve the utilization rate of carbon.

The invention relates to the technical field of solid waste recycling, in particular to a bean dreg recycling method which comprises the following steps: adding a first compound enzyme into bean dregs and first water to perform enzymolysis, performing ultrasonic treatment and first heating treatment on the prepared first mixture, and performing first centrifugal treatment to prepare first liquid and first solid; adding a second compound enzyme into the first solid and second water for enzymolysis to obtain a second mixture, and carrying out second heating treatment and second centrifugal treatment on the second mixture to obtain a second liquid and a second solid; an oligosaccharide concentrated solution prepared from the first liquid can be used as an additive of a soymilk beverage, and a soybean hydrolysis concentrated solution prepared from the second liquid; the soybean hydrolysis concentrated solution can be used as a freshener; the insoluble fiber polysaccharide prepared from the second solid can be used as a dietary fiber supplement or used for preparing feed. According to the method, recycling and comprehensive utilization of the bean dregs are achieved, secondary pollution is avoided, the application range of recycled products is wide, and the economic value is high.

The invention discloses an infrared image column stripe heterogeneity correction method based on an improved median histogram, and belongs to the field of infrared image heterogeneity correction. The method comprises the following steps: calculating a column histogram of a single-frame infrared image and a column mean value curve subjected to wavelet denoising according to an input infrared image; performing inversion operation according to the obtained column histogram to obtain a column inverse histogram; generating an adaptive window of the bilateral filter according to the column mean value curve; generating a bilateral filter according to the spatial domain distance of the column and the gray domain difference of the column mean value curve; filtering the column inverse histogram according to the obtained bilateral filter to obtain a median histogram; and an input infrared image is mapped according to the median histogram to obtain an infrared image after stripe removal. According to the method, a better fringe removal effect is achieved, blind pixel points are avoided, and the step of repeatedly calculating a comparison result to solve an optimal parameter value in an original algorithm is omitted.

The invention provides a container capacity expansion method, system and device, belongs to the technical field of data processing, and aims to achieve container dynamic resource management.The method comprises the steps that running state data of all containers in a target container cluster are collected in real time; constructing a service calling relation graph according to the running state data; wherein the service calling relation graph is a directed acyclic graph, each node in the graph represents a micro-service, each edge in the graph represents a calling relation from the current node to the next node, and the weight of each edge represents service processing time delay; when a preset capacity expansion condition is met, executing a critical path algorithm according to the service calling relation graph, identifying to obtain a critical path, calculating the priority of each node in the critical path, and determining a to-be-expanded container according to the priority; determining an expansion strategy according to the state of the container to be expanded; and according to the capacity expansion strategy, carrying out capacity expansion on the container to be subjected to capacity expansion.

The invention discloses a storage resource management method and device, electronic equipment and a readable storage medium, the method is applied to a central monitor, the central monitor is connected to a storage system, the storage system comprises a plurality of storage directories, and each storage directory is bound with a user group, and the method comprises the following steps: monitoring each storage directory in the storage system, obtaining storage resource use information of each storage directory; determining a to-be-managed storage directory and a target user group corresponding to the to-be-managed storage directory according to the use information of each storage resource; obtaining user group information of the target user group, and determining a storage directory management strategy according to the user group information and the storage resource use information; and adjusting the storage capacity of the to-be-managed storage directory by using the storage directory management strategy to obtain a new storage directory corresponding to the target user group. By applying the technical scheme provided by the invention, reasonable and flexible storage resource quota management can be carried out on vast users, and the problem of waste of storage resources is further avoided.

This application relates to an electronic valve control method, apparatus, computer equipment, and storage medium. It includes: determining the electronic valve supply voltage of a target electronic valve, and determining a filtered supply voltage for the target electronic valve based on the electronic valve supply voltage; adjusting the target supply voltage of the target electronic valve based on the filtered supply voltage and the brushed motor supply voltage of the target electronic valve; and controlling the operation of the motor in the target electronic valve based on the target supply voltage. This solution determines the desired supply voltage of the target electronic valve, i.e., the target supply voltage of the target electronic valve, based on the electronic valve supply voltage and a pre-set brushed motor supply voltage, avoiding the resource waste caused by directly controlling the motor operation of the target electronic valve based on the electronic valve supply voltage, and reducing resource consumption during the operation of the electronic valve.

The application discloses a double-membrane water treatment system, which comprises a front ultrafiltration assembly and at least one reverse osmosis assembly; the front ultrafiltration assembly is provided with an ultrafiltration water tank; the reverse osmosis assembly is connected to the downstream of the ultrafiltration water tank and is provided with a water tank; the water production side and the concentrated water side of the reverse osmosis assembly are respectively connected to a discharge flow path; a shunt device provides a first discharge flow path and a second recovery flow path for flushing water from the reverse osmosis assembly; the first discharge flow path is connected to an external discharge point of the system; the second recovery flow path is connected to the water tank or the ultrafiltration water tank in the system; a control unit receives an operating state signal of the reverse osmosis assembly to control the shunt device to selectively guide the flushing water to the first discharge flow path or the second recovery flow path; in a flushing state, the shunt device guides the flushing water to the second recovery flow path; and in a chemical cleaning state, the shunt device guides the flushing water to the first discharge flow path. The scheme realizes recycling of high-quality flushing water and improves the recovery rate of the system.

The utility model belongs to the technical field of steel ore dressing equipment, especially relate to a belt conveyor material limiting device, including belt conveyor, the material limiting structure of the head department of belt conveyor is provided, the material limiting structure includes the support structure of being fixed in the head department of belt conveyor, the shape retainer of being fixed to the support structure and being provided above the adhesive tape of belt conveyor and the soft material scraping board of being fixed to the shape retainer, the soft material scraping board is provided as V shape, the V shape opening of soft material scraping board is close to the head of belt conveyor and is provided, the V shape end of soft material scraping board is far from the head of belt conveyor and is provided, and the V shape end is provided as arc shape. The soft material scraping board can spread the middle part of the ore raw material, avoid the thickness of the iron ore raw material to exceed the magnetic force line range of the magnetic separator and mistake the high content iron ore raw material as waste and discard, solve the problem that the existing belt conveyor transports the iron ore raw material to the magnetic separator screening and easily causes the waste of the iron ore raw material.

The application provides a data transmission method, device, system and electronic equipment. The data transmission method comprises the following steps: when target data sent by a source device is received or feedback information sent by a first slave device is received, waiting for a preset time length; determining a second slave device in a local area network which does not send feedback information as a target device; sending the target data to the target device or sending a data sending instruction to the first slave device. The above method can realize that the source device only needs to send the target data once, the target data can be received by the master device and all the slave devices, the source device does not need to resend the target data due to the influence of the second slave device which does not receive the target data, and the waste of communication resources is reduced.

The application provides a fire station hierarchical site selection method based on a quadratic unconstrained binary optimization model, relates to the field of fire station site selection, and comprises the following steps: discretizing a city space into a grid, calculating fire risks by using multi-source interest point data, mapping the fire risks to a real road network to generate demand points and candidate points, constructing a hierarchical multi-objective site selection model considering service path distance and construction cost, converting a problem with constraints into a quadratic unconstrained binary optimization model by using a non-balanced penalty method, and performing fast optimization and solution by using a QUBO-compatible solver to obtain a hierarchical site selection scheme of large and small fire stations. The application realizes global collaborative optimization of large and small fire stations, breaks through the calculation bottleneck of large-scale site selection problems, significantly improves the solution efficiency and scheme quality, and provides technical support for constructing an efficient, economical and resilient urban fire system.

The invention belongs to the technical field of nuclear energy equipment power supply design, and particularly relates to a power supply protection and distribution unit circuit. The device comprises an outer box shell and a refrigeration inner container arranged in the outer box shell. The refrigeration inner container is provided with an air inlet and an air outlet, and an air flow channel is formed between the air inlet and the air outlet. A cross-flow fan is arranged at the air inlet and used for guiding waste gas into the air flow channel. A thermoelectric refrigeration piece is arranged in the refrigeration inner container, and a cold end fin is connected to the rear portion of the cold end of the thermoelectric refrigeration piece and used for condensing heavy water vapor in waste gas in the air flow channel, so that the problem that in the prior art, heavy water vapor contained in by-product oxygen during deuterium preparation through heavy water electrolysis is mostly and directly discharged along with oxygen, and the deuterium preparation efficiency is improved is solved. And heavy water is greatly wasted.

The invention discloses a high and steep slope roadbed reinforcement and gravity type retaining wall combined supporting structure and a design method, the supporting structure comprises an embankment supporting structure and a drainage system, the embankment supporting structure comprises a gravity type retaining wall, the gravity type retaining wall is arranged on a moderately weathered slate of a slope toe, a reinforcement area is arranged above the gravity type retaining wall, and the drainage system is arranged on the gravity type retaining wall. The reinforcement area comprises a non-modified reinforcement area and a modified reinforcement area from inside to outside, and reinforcement materials are laid in the reinforcement area in a layered mode. A reinforced modified soil cushion layer is horizontally laid between the bottom of the reinforced area and the top of the gravity type retaining wall, and rib materials are laid in the reinforced modified soil cushion layer in a full-section mode. Identifying a damage mode of overall instability; and the rib material length and the retaining wall height are optimized according to different failure modes. Based on the cooperative supporting effect between the modified reinforcement and the gravity type retaining wall, the overall stability of the combined structure is improved, the length of the reinforcement and the height of the retaining wall are optimized, the construction cost is reduced, and the dual purposes of cost saving and engineering performance optimization are achieved.

The application provides a structure for realizing docking locking of a multi-rotor aircraft and power transmission, comprising a docking mechanism and a multi-rotor structure, wherein the docking mechanism comprises a conductive structure, a clamp, an electromagnet, a docking table, a magnet and a Pogo Pin probe; the multi-rotor structure comprises a central connecting piece, a plurality of arms are connected with rotors around the central connecting piece, a magnet is arranged below the central connecting piece, and an aluminum foil is arranged on each arm; the docking table is fixedly connected with an access device, an electromagnet is arranged in the center of the docking table, and the electromagnet is connected with the magnet on the multi-rotor structure; a plurality of clamps corresponding to the number and position of the rotors are distributed around the docking table, and a Pogo Pin probe is arranged on each clamp. The multi-rotor aircraft is closely contacted with a carrier to form an integral whole when the carrier cooperates to perform a task, which is beneficial to efficiently complete the task in cooperation, and can improve the endurance of the aircraft when performing a task alone.

This invention provides an energy conversion control system, relating to the field of power plant wastewater treatment technology. The energy conversion control system includes: a raw water tank for storing and discharging desulfurization wastewater; a reverse osmosis unit for concentrating the desulfurization wastewater to generate permeate and a first concentrate; a pressure regulating device that uses the first concentrate to regulate the pressure of the desulfurization wastewater discharged from the raw water tank to become the first desulfurization wastewater, and sends the first desulfurization wastewater into the reverse osmosis unit via a pressure regulating pipeline group and a first pipeline; a rotary control valve for controlling the first concentrate to enter the pressure regulating device via a third pipeline and controlling the second concentrate to be discharged from the pressure regulating device; and a vacuum breaking valve connected to the outlet of the rotary control valve via a drainage pipeline for drawing in air to break the vacuum created in the drainage pipeline. The energy conversion control system provided by this invention solves the problem of energy waste caused by the discharge of the first concentrate generated during the desulfurization wastewater treatment process through valve regulation or pressure reduction by a flow-limiting orifice plate in the prior art.

The invention relates to the technical field of impregnated paper processing, and discloses an accurate impregnated paper gluing device which comprises a platform, a gluing assembly used for gluing impregnated paper is arranged above the platform, and an adjusting assembly used for determining the width of the impregnated paper is arranged at the top of the platform. The adjusting assembly is provided with a downward pressing assembly used for preventing impregnated paper from curling, the adjusting assembly is further provided with a cleaning assembly used for removing adhesive glue, and the two sides of the platform are rotationally connected with conveying rollers used for conveying the impregnated paper through connecting bases. The problem that when the size of the impregnated paper is smaller than the gluing range, glue is prone to dripping on the conveying platform, and consequently glue waste is caused is effectively solved, the production and processing cost of the impregnated paper is saved, and practicability is high.

The invention relates to the technical field of rail conveying equipment, in particular to a rail guide vehicle for conveying fatty acid raw materials, which comprises a guide rail and a rail vehicle mechanism running along the guide rail, and further comprises a support mechanism, a guide rail, a guide rail and a guide rail, the hopper mechanism is hinged to the support mechanism through a hinge shaft and used for containing and conveying raw materials, a heating jacket is arranged outside the hopper mechanism, and a plurality of electric heating pipes are arranged in the heating jacket; and the self-adaptive hinge damping mechanism is arranged at the hinge shaft. According to the rail car, the conveying hopper is hinged to the car frame, and the self-adaptive hinge damping mechanism is arranged, so that the conveying hopper can adjust the posture in a self-adaptive mode when the rail car is started and stopped or passes through a ramp, meanwhile, the self-adaptive hinge damping mechanism can effectively absorb the inertia moment, the shaking and splashing risks of internal viscous liquid are greatly reduced, and the safety of the rail car is improved. And the damping force can be adaptively adjusted according to the load of the hopper mechanism, so that the swinging of the conveying hopper can be quickly inhibited.

The application discloses a chemical process safety state evaluation method based on multi-dimensional process parameters and relates to the technical field of chemical process safety evaluation. The method comprises the following steps: acquiring multi-dimensional process parameter time series data of a plurality of monitoring nodes in a chemical process; constructing a dynamic recursive safety state evaluation model, which comprises a parameter coupling memory unit and a state transition probability deduction unit; performing time domain difference recursion and space domain cross coupling calculation on the data through the parameter coupling memory unit to generate a process parameter coupling state vector; inputting the coupling state vector into the state transition probability deduction unit, which iteratively calculates the probability distribution of the deviation of the current process state from the safety domain based on the Markov blanket dependence structure determined based on historical accident case statistics learning; and determining and outputting the safety state grade according to the cumulative probability value of the probability distribution exceeding the safety threshold.

The utility model discloses a silicon solar energy industry nitrogen residual cold recovery device which comprises a vortex tube, a first three-way valve, a second three-way valve and a heat exchange mechanism, the input end of the vortex tube is communicated with a nitrogen exhaust port of a condensation evaporator in a photovoltaic workshop, and the hot air output end of the vortex tube is communicated with the input end of the first three-way valve. The cold air output end of the vortex tube communicates with the input end of the second three-way valve; the first output end of the first three-way valve and the first output end of the second three-way valve are both connected with gas discharge ends, and the second output end of the first three-way valve and the second output end of the second three-way valve are both communicated with the heat exchange mechanism. Nitrogen in a silicon solar crystal pulling and slicing manufacturing section is collected in a centralized mode and sequentially passes through the vortex tube and the heat exchange mechanism, energy recovery is achieved, the problem that in the prior art, resources are wasted due to direct nitrogen discharging is solved, and recycling of the resources is facilitated.

The utility model discloses a handheld trace liquid nitrogen transfer device, including storage cylinder, the top surface of storage cylinder is installed with module box, the bottom surface of storage cylinder is installed with conical barrel, the bottom surface fixed connection of conical barrel has screw pipe, the inner top wall of conical barrel is installed with micro two -way pump, one end communication of micro two -way pump has first pipe line, and first pipe line passes through the inside of conical barrel and is linked with storage cylinder, the other end communication of micro two -way pump has second pipe line, and micro flow sensor and micro electric valve are installed on second pipe line.

This utility model relates to the field of bio-jet fuel technology, specifically a selective collection device for isomeric fractions of bio-jet fuel. The device includes a housing, a rotating assembly, and a tube rack. The bottom of the rotating assembly is located inside one end of the housing, and the end of the tube rack away from the rotating assembly is connected to the housing. This assembly, consisting of the housing, rotating assembly, and tube rack, provides a continuous collection device for isomeric fractions of bio-jet fuel. Through a step-by-step rotation, test tubes used for collecting the fractions pass sequentially below the discharge end of the tube rack. Simultaneously, the device actively lifts the test tubes being collected, bringing the tube opening closer to the discharge end of the fraction, thus reducing the likelihood of external interference during the fraction's descent into the test tube and improving the reliability of fraction collection.

The utility model relates to the technical field of power plant desulfurization, in particular to coal-fired power plant desulfurization wastewater treatment equipment which comprises an equipment body and a softener feeding assembly, a feeding pipe is mounted on the equipment body, and the softener feeding assembly is mounted at the upper end of the equipment body; wherein the softener feeding assembly comprises a supporting table, a measuring barrel, a discharging pipe and a feeding pipe, the supporting table is installed at the upper end of the equipment body, the measuring barrel is installed at the upper end of the supporting table, the upper end of the discharging pipe penetrates through the supporting table and is fixedly communicated with the lower end of the measuring barrel, the other end of the discharging pipe is fixedly communicated with the feeding pipe, and a water pump is installed on the discharging pipe; the feeding pipe is fixedly communicated with the upper end of the measuring cylinder, and a switch valve is mounted on the feeding pipe. The device has the function of quantitatively adding the softening agent, so that the problems that the softening agent is wasted and the treatment effect is influenced are solved.

The utility model discloses a kind of air port aromatherapy, including the shell with cavity and be located in shell and be used for accommodating fragrance substance perfume container, the rear end of shell and / or periphery is equipped with several air holes, the rear end of perfume container is open, open place is sequentially equipped with breakable sealing sheet and volatile film from inside to outside;The rear end of shell inside is equipped with an elastic puncture piece that is moved inward and extrudes volatile film and breakable sealing sheet after being stressed, the front end of elastic puncture piece is equipped with at least one towards the protruding spike of volatile film arrangement, the end of protruding spike close to volatile film is non-sharp shape;The rear end of shell is equipped with elastic drive piece that is rotated inward and pushes elastic puncture piece to move inward after being stressed in middle, the rear end of shell is rotatably equipped with the clip for pushing elastic drive piece to rotate inward. The utility model has the characteristics that incense effect is good, leave incense time is long and good leak-out effect, and overall structure is simple and processing and assembly are convenient.

The invention provides a dust removal water cannon for coal mining and processing. The dust removal water cannon comprises a dust removal moving trolley; the dust removal liquid storage conveying mechanism is fixedly mounted on the inner side of the dust removal moving trolley, and the dust removal liquid storage conveying mechanism is electrically connected with the control case through a connecting wire; the positioning lifting mechanism is fixed to the front end of the dust removal liquid storage conveying mechanism, and the positioning lifting mechanism is electrically connected with the control case through a connecting line; according to the dedusting water cannon for coal mining and processing, a dripping liquid collecting frame of the dripping liquid collecting mechanism is used for receiving dripping liquid at a cannon muzzle, a high-low collecting cavity guides the liquid to flow into a recycling frame through a recycling pipeline, and the rotating dedusting cannon barrel is movably mounted on the inner side of the upper end of the positioning lifting mechanism; the problem that an existing device wastes water resources is solved, cyclic utilization of the water resources is achieved, and the use cost is reduced.

The rice seedling raising device comprises a support and a controller, the support comprises a bottom plate and supporting columns perpendicular to the four corners of the bottom plate, a ceiling is arranged at the tops of the four supporting columns, a plurality of seedling raising devices are arranged among the four supporting columns from top to bottom, each seedling raising device comprises a seedling raising plate and a sliding way frame, the seedling raising plates are cavities, and the sliding way frames are arranged in the cavities. A cavity is formed in the seedling raising plate, a seedling raising groove is formed in the seedling raising plate, the bottom of the seedling raising groove extends into the cavity, water permeable holes are formed in the bottom and the side face of the seedling raising groove, a sponge block is embedded in the seedling raising groove, and a strip-shaped hole is formed in the top face of the sponge block. Through optimization and improvement in multiple aspects of multi-layer design, resource recycling, intelligent control, nutrient solution receiving optimization, simple operation and the like, the rice seedling raising efficiency and effect are remarkably improved. The novel rice seedling raising device not only solves the problems and limitation of a traditional seedling raising device, but also provides a more efficient, environment-friendly and intelligent seedling raising solution for rice production.