600results about How to "Improve screening efficiency" patented technology

The utility model discloses a kind of gradable construction waste screening machines, it is related to screening machine field, including vibrating screening machine, the vertical plate of vibrating screening machine rear side symmetry is provided;The inside of vibrating screening machine and the side of vertical plate are respectively rotatably connected with two rotating rods, and rotating rod passes through vibrating screening machine and is respectively connected with winding roller with vertical plate, and winding roller is connected with screen between;The surface of vibrating screening machine is hinged with guide plate close to upper side screen, and the surface of vibrating screening machine is hinged with cylinder that is hinged with guide plate;The inner wall of vibrating screening machine two sides is respectively symmetrically provided with the fixed plate that is contacted with screen bottom end.

The utility model relates to an automatic slag discharging device for metallurgical slag, and aims to solve the problems that the slag cooling efficiency is low and the slag discharging process is not environment-friendly. The device comprises an L-shaped cooling pipe with a bent bottom, wherein the upper section of the L-shaped cooling pipe is communicated with a slag discharge port of the metallurgical furnace; the circulating cooling part is arranged on the cooling pipe and is used for cooling slag; the dispersing part comprises a rotating power mechanism, a rotating shaft and a dispersing plate, dispersing holes are densely distributed in the dispersing plate, the dispersing plate is located below the slag discharging opening, the rotating shaft is driven by the rotating power mechanism to rotate, slag is discharged from the dispersing holes under the action of gravity and centrifugal force and dispersed into particles, and rapid cooling and subsequent recycling treatment are facilitated; the blades are arranged on the rotating shaft and located above the slag discharging opening, and the blades rotate synchronously when the rotating shaft rotates; one end of the waste gas discharge pipe is communicated with the top of the cooling pipe, and the other end is connected with a waste gas treatment system for discharging and treating waste gas generated by slag cooling. According to the utility model, the slag cooling efficiency is improved, and the slag discharging process is more environment-friendly.

The application discloses a chemical medicine formula automatic screening system, and relates to the technical field of medicine preparation research and formula screening. The system comprises a device casing, a working platform and a main control system are arranged in the device casing, a multi-axis robot and multiple functional stations are arranged on the working platform, the multiple functional stations are arranged around the multi-axis robot in the device casing, and the main control system is in communication connection with the multi-axis robot and the multiple functional stations. The multiple functional stations comprise: a feeding and recycling rack, a solvent raw medicine filling device, a powder feeding device, a heating and oscillation reaction device, a viscous additive filling device, and an automatic cap closing mechanism. The system realizes automatic and accurate batching and improves overall work efficiency.

The application relates to the technical field of molecular biology, and discloses a cold-tolerance identification method of Pennisetum based on a 65-core molecular marker set, a primer group and a gene chip and application thereof. The application collects core germplasm resources of the Pennisetum through a system, and constructs a GWAS population by using multi-environment (different altitudes) conditions, so that a wide genetic background and phenotype variation are fully covered, and a material foundation for genetic analysis of cold tolerance is laid. In the aspect of cold-tolerance phenotype identification, the application innovatively takes the chlorophyll content of leaves and the percentage of green leaves after natural low-temperature stress in autumn and winter fields as the cold-tolerance evaluation indexes, judges individuals with more than 40 excellent allelic variations as high-cold-tolerance varieties, and establishes a rapid and non-destructive phenotype screening method which can be implemented at the seedling stage.

The invention relates to the technical field of risk assessment of diabetic patients, in particular to a risk assessment method and system for diabetic patients. The eye fundus image containing local defects is directly processed through the trained lesion risk assessment model, lesion risk assessment is carried out on the decoupled lesion feature vector, and the preprocessing step of carrying out manual or algorithm restoration on the defect image is omitted, so that distortion errors possibly introduced in the restoration process are avoided, the assessment efficiency is improved, and the method is suitable for popularization and application. By constructing a feature decoupling network and constructing a total loss function including comparison loss, independence constraint loss and classification loss, the model is forced to learn pure lesion feature vectors, lesion information is ensured to be effectively separated from imaging quality information, and the defect that a traditional model excessively depends on image integrity is overcome; the technical problem that the risk assessment effect of most existing DR risk assessment models based on deep learning is poor when a repaired complete eye fundus image is input is solved.

The utility model provides a sieve sand device for wet mixing mortar production, including first support frame, first support frame top is equipped with second support frame and both one end rotationally links, is provided with the lifting hydraulic cylinder between first support frame and second support frame and is inclined, the both ends of lifting hydraulic cylinder are rotationally linked with the connecting frame respectively, two connecting frames are installed in first support frame and second support frame respectively, make second support frame rotate around first support frame under the drive of lifting hydraulic cylinder, second support frame top is equipped with drum screening device, and it changes the inclination angle along with first support frame rotation. The utility model discloses when using, the screen cloth can realize the lifting under the action of lifting hydraulic cylinder, so can find the best screening angle when screening quartz stone through the mode for adjusting the inclination angle of screen cloth, thereby improves screening efficiency.

This invention relates to the technical field of infrastructure construction, and more particularly to a crushing and screening device for infrastructure construction. The device includes a crushing component, a shaking component disposed at the bottom of the crushing component, and a dust removal component disposed on one side of the shaking component. The crushing component includes a drive shaft, a first crushing roller, and a second crushing roller. The drive shaft includes teeth and a drive gear, which meshes with one side of the first and second crushing rollers. The first and second crushing rollers are respectively provided with a first driven gear and a second driven gear. The shaking component includes a transmission component, a linkage component, and a screening component. The transmission component is connected to the drive shaft, the linkage component is disposed on one side of the transmission component, and the screening component is disposed on one side of the linkage component. The shaking component achieves periodic shaking of the material, thereby increasing screening efficiency. Furthermore, the dust removal component operates synchronously with the shaking component; dust is removed synchronously with each shaking, effectively ensuring work efficiency and saving water resources.

The utility model discloses coal gangue sorting device relates to the field of sorting, including frame, the frame is installed with the feed end, the inner wall of feed end is installed with the crushing roller for carrying out the crushing of coal mine and gangue, the inner wall of frame is installed with the magnetic separation conveyer belt of carrying out the conveying of the coal mine and gangue after crushing, the inner wall of frame is slidably provided with screen cloth, the inner wall of frame is installed with the dredging assembly of dredging screen cloth, the utility model discloses the crushing roller of feed end can evenly break the coal mine and the gangue on the gangue to the same granularity, simultaneously, the application of magnetic separation conveyer belt has realized the quick sorting of the material after crushing, has effectively distinguished the gangue of rich magnetic substance and the coal mine of lower magnetic substance content, has improved the sorting efficiency.

The utility model relates to bamboo shoot raw material processing technical field discloses a kind of raw material screening devices of multilayer assembly, including box, the middle end of the box is connected with screening frame by dismounting component, the middle end of the screening frame is fixedly connected with multiple horizontal poles, the top side of the horizontal pole is fixedly connected with telescopic link one, the outer wall of telescopic link one is equipped with spring one, the bottom side of spring one is fixedly connected with the top side of horizontal pole, the outer wall of the horizontal pole is equipped with vibrating shell, the top side of telescopic link one and the top side of spring one are fixedly connected with the inner wall of vibrating shell, the rear end of multiple vibrating shells is fixedly connected by connecting plate, the top side rear end of one of vibrating shells is fixedly connected with lug, slot is arranged in the middle end of the lug. In the utility model, according to the specific needs of bamboo shoot processing, single layer or multilayer different mesh screening frame combination can be conveniently installed, and the screening frame installed in multiple layers is vibrated synchronously and uniformly.

The utility model belongs to the technical field of grain separation, and particularly relates to a vibrating screen for grain impurity separation, which comprises a fixing component, a screen component and a rotation driving component, the rotation driving component is fixedly mounted on the fixing component, and the screen component is movably mounted on the upper side of the fixing component through a sliding support component. The rotation driving assembly is arranged on the lower side of the screen assembly, a rotating disc is rotationally arranged on the screen assembly, and the output end of the rotation driving assembly is eccentric and fixedly connected with the rotating disc. When the rotating driving assembly rotates, the rotating disc eccentrically rotates around the output end of the rotating driving assembly, finally the effect that the screen assembly shakes around the output end of the rotating driving assembly is achieved, shaking of workers is simulated to screen grains, the grain screening efficiency is improved, meanwhile, shaking can prevent the situation that the surface of a screen is locally stacked, and the screening efficiency is improved. And the condition of non-uniform screening is avoided.

The utility model relates to the technical field of aquaculture, and discloses a fry screening device for aquaculture, which comprises a box body, the inner wall of the box body is connected with a screen I in a sliding manner, the inner wall of the box body is connected with a screen II in a sliding manner, and the outer walls of the screen I and the screen II are fixedly connected with mounting blocks; a hollow block is slidably connected to the inner wall of the mounting block, a handle is slidably connected to the interior of the hollow block, a transmission block is fixedly connected to the outer wall of the handle, a fixing rod is arranged on the upper surface of the transmission block, an L-shaped rod is slidably connected to the outer wall of the fixing rod, and the outer wall of the upper side of the L-shaped rod is slidably connected to the inner wall of the mounting block. According to the screening device disclosed by the utility model, through mutual cooperation of the mounting block, the hollow block, the handle, the transmission block, the spring, the fixed rod, the L-shaped rod and the limiting rod, the screen I and the screen II are quickly mounted and dismounted, so that breeding personnel can conveniently replace aged and deformed screens in time, and therefore, the screening quality is guaranteed.

This invention discloses an automatic image recognition method, apparatus, computer device, and readable storage medium. The method includes: acquiring an actual image of a target object to be tested; inputting the actual image into a preset image processing algorithm model for image recognition to obtain a recognition result, wherein the preset image processing algorithm model is constructed based on training data; and determining whether the target object to be tested is an industrial product based on the recognition result. By implementing this invention, the problems of strong subjectivity, high cost, and complex process that are difficult to scale up due to manual recognition are solved, thereby improving screening efficiency and accuracy.

The utility model discloses a screening device for traditional Chinese medicinal material processing, and relates to the technical field of screening devices. The utility model comprises a rectangular bottom plate, and also comprises a main body part arranged above the rectangular bottom plate; the collecting part is mounted on the main body part; the screening part is mounted at the top of the rectangular bottom plate; wherein the top of the screening part is connected with the main body part and is used for enabling the main body part to generate vibration. Furthermore, the main body part comprises a sieve plate arranged above the rectangular bottom plate, and bulges are arranged on the inner wall of the sieve plate. By arranging the collecting part, the problems that in the using process of an existing screening device, screened traditional Chinese medicinal materials are inconvenient to collect, the screened traditional Chinese medicinal materials are scattered and stacked, the workload and operation difficulty of manual picking are increased, new impurities are mixed into the traditional Chinese medicinal materials or the traditional Chinese medicinal materials are polluted due to the fact that collection is not timely, and the traditional Chinese medicinal materials are wasted are solved. The purity of the medicinal materials is influenced.

The utility model discloses a kind of steel sand recycling screening devices of shot blasting machine, it is related to shot blasting machine technical field, including selection device main body, the upper surface of screening device main body is provided with feed pipe, and the lower surface of feed pipe is provided with support frame, the upper surface of support frame is provided with vibration device, and the both sides surface of support frame is provided with elastic restorer, and the front surface of support frame is provided with discharge plate.The steel sand recycling screening device of shot blasting machine, compared with the shot blasting screening recycling device of existing ordinary shot blasting machine, by the setting of double layer screen mesh hole plate, steel sand can be graded and screened by the setting of size hole, improve screening speed, reduce the frequency of steel sand jam in screen mesh hole plate simultaneously;By the setting of connecting plate one, double layer screen mesh hole plate can be extracted between to carry out quick update maintenance, to improve the maintenance speed of screen mesh hole plate, improve the working efficiency of screening device.

The utility model provides a grain purchasing screening device which comprises a screening box, a feeding port is formed in the top of the screening box, a dust discharging pipe is arranged on one side of the screening box and located on the upper portion of the interior of the screening box, and a conical assembly is arranged on the upper portion of the interior of the screening box. The conical assembly is fixed in the screening box through a connecting rod, the conical assembly comprises a small conical part, the lower portion of the small conical part is connected with a large conical part, a vibrating mechanism is arranged below the conical assembly, and a discharging opening is formed in the bottom of the screening box. After grains are fed into the screening box through the feeding port, the grains sequentially impact a small conical part and a large conical part in the conical assembly, dust attached to the surfaces of the grains is raised through impact and discharged through the dust discharging pipe, the device can effectively treat the dust on the surfaces of the grains, the subsequent dust removing procedure is omitted, and the grain screening efficiency is improved.

This utility model relates to the technical field of building material processing equipment, specifically to a multi-stage aggregate particle size screening device. The multi-stage aggregate particle size screening device includes a frame, screening components, a feeding conveyor belt, and a multi-stage discharge conveyor belt. The screening components are inclinedly arranged on the upper part of the frame. The feeding conveyor belt is parallel to the screen components above them for feeding aggregates to be screened. The multi-stage discharge conveyor belts are arranged sequentially from top to bottom below the screen components for receiving screened aggregates of different particle sizes. The screening components include a frame plate, screen bars, and hopper plates. The frame plates are symmetrically installed on the upper part of the frame. The screen bars are spaced apart along the length of the frame plates and divided into multiple rows along the height direction. The screening gap between each row of screen bars decreases progressively from top to bottom. Each row of screen bars has a hopper plate at its discharge end, with the hopper plate length decreasing progressively from top to bottom. A motor is installed on the outside of the frame plate.

This invention provides a method, apparatus, electronic device, and storage medium for real-time filtering of recommended videos. The method includes: acquiring video attribute information and user feature information of a target video; determining video content features corresponding to the target video based on the video attribute information; acquiring several candidate videos corresponding to the video content features, as well as index similarity scores between each candidate video and the target video; determining content relevance scores between each candidate video and the target video based on the index similarity scores; and filtering recommended videos corresponding to the user feature information from the several candidate videos based on the content relevance scores corresponding to each candidate video. This method quickly filters recommended videos corresponding to the user feature information from several candidate videos, improving the filtering efficiency of recommended videos and the user browsing experience.

This utility model relates to the field of screening machines, specifically a multi-stage speed-reducing stable vibrating screening machine, which includes a frame; it also includes: a storage silo, mounted on the frame, with a feed hopper on the storage silo, a discharge mechanism at the bottom of the feed hopper connecting to the storage silo, and a discharge port at the center of the bottom of the storage silo; an air chamber, located at one end of the storage silo, with a dust outlet at the other end, and a blower mechanism inside the air chamber; a slag discharge trough, located at the bottom of the storage silo near the dust outlet; a vibrating frame, mounted on the frame via a rocker arm, with a screening mechanism mounted on the vibrating frame below the discharge port; and a vibration mechanism, mounted on the frame, which drives the vibrating frame to vibrate. This utility model uses a common motor for multi-stage speed reduction and then uses a rocker arm to drive the vibrating frame to oscillate within a small range, resulting in lower costs. Furthermore, it quickly completes screening through multiple screening plates, resulting in a low screening path and high screening efficiency.

A fertilizing device for agricultural planting comprises a fertilizer containing groove, a driving shaft, a driven chain wheel, a transition feeding hose, a swing screening block, a fertilizing block driving motor and a dispersing fertilizing block, a screening mechanism bearing groove is formed in the bottom of the fertilizer containing groove, a lower containing groove is formed in the bottom of the screening mechanism bearing groove, and the screening mechanism bearing groove is matched with the swing screening block; the material screening mechanism bearing groove is connected with a swing screening block, the swing screening block rotates in the material screening mechanism bearing groove, a swing mechanism bearing groove is formed in the side face of the material screening mechanism bearing groove, screening shifting blocks and a side guiding flat groove are arranged at the top of the swing screening block, the three screening shifting blocks are evenly arranged at the top of the swing screening block, and screening holes are formed in the upper surface of the swing screening block. Each group of screening holes is located in the two sides of the screening shifting block, and the side guide flat grooves are located in the two sides of the screening shifting block array group.

The utility model discloses screening equipment for medicine raw materials, which comprises a screening mechanism, two toothed plates are fixedly mounted on the outer surface of the screening mechanism, a discharging hopper is arranged above the screening mechanism, two supporting plates are fixedly connected to the outer surface of the discharging hopper, a rotating shaft is rotatably connected to the inside of the discharging hopper through a bearing, and a plurality of supporting plates are fixedly connected to the outer surface of the discharging hopper. The two ends of the rotating shaft penetrate through the discharging hopper and are rotationally connected with the supporting plates through bearings, and two gears are installed on the outer surface of the rotating shaft. According to the device, through the meshing effect of a gear and a toothed plate and the sliding fit design of a sliding groove and a sliding block, the discharging hopper keeps stable movement in the vibration process, equipment deviation or blockage caused by vibration is avoided, the discharging hopper drives a material stirring plate to rotate in the feeding process through the arrangement of the material stirring plate and a driving motor, medicine raw materials are evenly dispersed, and therefore the medicine feeding efficiency is improved. Raw materials are prevented from accumulating on the screen, the blocking risk is reduced, and the screening efficiency is improved.

The present application relates to the technical field of insect screening and collecting, in particular to a virgin fly collecting device and method for fruit fly genetic research; the device comprises a guide pipe and a camera assembly and the like structure, two elastic bags are arranged on the guide pipe, and a preset interval is arranged between the two elastic bags as a detection section; the camera assembly is arranged opposite to the detection section, and is used for shooting photos of fruit flies located in the detection section; real-time image acquisition of fruit flies passing through the detection section is realized through the camera assembly; virgin flies and non-virgin flies are automatically distinguished by combining a deep learning visual recognition program built in an upper computer; and the airflow direction is controlled by an electromagnetic three-way valve to drive the elastic bag and the air blowing pipe to complete the shunting of fruit flies; the whole process does not need manual anesthesia, magnifying glass identification and the like operation, the labor cost is significantly reduced, and the problems of long screening time and large labor intensity of virgin flies in the prior art are solved.

Embodiments of the present specification provide a train screening method and device after a line controller restarts, the train screening method after the line controller restarts comprising: reading a configuration file after restarting, wherein the configuration file stores train information of each train passing a front screen under the line controller; determining a predicted position of a target train after communication interruption and emergency braking based on train information of the target train in the configuration file, wherein the target train is any one of each train passing the front screen; performing position verification on the target train based on the predicted position of the target train and a target position, wherein the target position is a current position reported by the target train after the line controller restarts; and determining a front screening result and a rear screening result of the target train based on a position verification result of the target train. After the line controller restarts, the train information in the configuration file is read to quickly perform position verification, so as to determine the front screening result and the rear screening result of the target train, thereby improving train screening efficiency.

The bar screen for the vibrating screen comprises a main frame, mounting plates are fixed to the left end and the right end of the outer wall of the main frame, limiting columns are vertically embedded into the front end, the rear end, the left end and the right end of the interior of the main frame, inner sliding blocks are embedded into the middles of the limiting columns, and return springs are embedded into the upper ends and the lower ends of the outer sides of the limiting columns. Supporting plates are fixed to the ends, close to the middle of the main frame, of the limiting columns, bar columns are embedded into the main frame, fixing plates are embedded into the front, rear, left and right ends of the upper portion of the inner wall of the main frame, limiting plates are fixed to the bottoms of the fixing plates, and limiting bolts are vertically embedded into the middles of the fixing plates. When the bar screen is installed on a vibrating screen, the vibration amplitude is larger, materials can rapidly move and roll over on the surface of the bar screen, the speed of passing through screen holes is increased, then the screening efficiency of the materials is improved, meanwhile, the bar columns can be rapidly replaced and overhauled, and use is more convenient.

The invention provides a red-blue confrontation-based large model agent autonomous iterative optimization method and system, and the method comprises the steps: building a customer agent as a blue party based on a large language model, obtaining user data from a plurality of channels, generating diversified customer portrait data, generating a dialogue test set containing diversified customer consultation test data, and carrying out the calculation of the dialogue test set. Taking the data as adversarial data for iterative optimization of the model; the method comprises the following steps: constructing a sales agent as a red party by using a preset first version prompt word, starting the red party and a blue party to carry out dialogue based on adversarial data, limiting a maximum dialogue round or taking a transaction conclusion as an exit condition, and carrying out quality inspection scoring and prompt word optimization direction prompting on the sales agent through a plurality of evaluation dimensions; inputting the first version cue word and the cue word optimization direction to a sales agent to obtain an optimized sales agent cue word; and repeating until the quality inspection score converges, and completing the iterative optimization process of the sales agent. According to the method, the sales conversion rate is remarkably improved, and the manual optimization cost is greatly reduced.

The utility model is applicable to the technical field of traditional Chinese medicine screening, and discloses a traditional Chinese medicine gravity screening device which is characterized in that a fixed frame is movably and detachably mounted between the side edges of every two groups of hollow rotating rods, a screening net plate is fixedly embedded and mounted at the bottom of the inner side of each fixed frame, and transmission frames are fixedly mounted at the two ends of the side edge of a mounting frame; and a driving mechanism is arranged in each transmission frame and is in transmission connection with the hollow rotating rod, and a reciprocating movement mechanism is arranged on the side edge of the mounting frame and is in transmission connection with the driving mechanisms. According to the technical scheme, the follow-up gear can clockwise and anticlockwise reciprocate to drive the fixing frame and the screening net plate to synchronously conduct inclination adjustment in the mounting frame, and then traditional Chinese medicine raw materials stacked in the fixing frame can incline along with rotation of the fixing frame and roll left and right on the surface of the screening net plate in a reciprocating mode; and traditional Chinese medicinal materials are subjected to rolling dispersion treatment, so that the screening efficiency of the traditional Chinese medicinal raw materials can be improved.

The utility model discloses a kind of leap sieves, it is related to sandstone screening field, comprising: leap sieve main body, the leap sieve main body is used to the screening of sandstone;Adjustable material blocking device, the adjustable material blocking device is installed in the both sides of leap sieve main body screen, and the adjustable material blocking device of both sides is staggered arrangement, the adjustable material blocking device includes: rotating mechanism, the rotating mechanism is installed on leap sieve main body;Telescopic mechanism.The utility model utilizes the setting mode of rotating mechanism and telescopic mechanism cooperation, through the staggered arrangement of adjustable material blocking device, it is convenient to block sandstone on leap sieve main body screen, through the cooperative matching of rotating mechanism and telescopic mechanism, the double regulation function of adjustable material blocking device angle and length is realized, this double regulation mechanism can control the leap speed and movement trajectory of material according to material particle size and humidity characteristic, make screening efficiency improve.

The utility model discloses a raw material pretreatment device for feed processing, which relates to the technical field of feed processing and comprises a screening component, a box body, a sealing door fixed on one side of the box body and a blanking hopper fixed on the top of the box body, a filter screen is arranged in the box body, one end of the filter screen is rotatably connected with the inner wall of the box body, and the other end of the filter screen is rotatably connected with the inner wall of the box body. A material receiving piece is arranged on one side of the box body; and the driving assembly is arranged on one side of the box body and comprises a driving piece fixed to one side of the box body, a connecting rod is fixed to the output end of the driving piece, an eccentric block is fixed to the end of the driving piece, a buffer block matched with the eccentric block is fixed to the top of the filter screen, a fixing shaft is rotationally connected into the discharging hopper, and the end of the fixing shaft is matched with the driving piece. The driving assembly can drive the filter screen to vibrate, the screening efficiency is improved, meanwhile, the discharging speed can be controlled, materials on the filter screen are in a tiled state all the time, accumulation of the materials is avoided, and therefore the screening efficiency is greatly improved.

This utility model relates to an automatic underwater screening device, comprising a main frame, a water tank, a housing, a screening fixture, and a screening fixture drive mechanism. The main frame and water tank are mounted on the housing, with the main frame located outside the water tank. The screening fixture drive mechanism is installed on the upper part of the main frame. The screening fixture drive mechanism includes a vibration source fixture, a linear bearing mounting bracket, a linear bearing, a tie rod, and a chain. The vibration source fixture and the linear bearing mounting bracket are mounted on the upper part of the main frame, and the linear bearing is mounted on the linear bearing mounting bracket. The tie rod is arranged vertically. The advantages of this utility model are: by integrating the main frame, water tank, housing, screening fixture, and drive mechanism into one unit, the equipment size is significantly reduced, facilitating transportation and installation, and solving the problems of large size and complex assembly of traditional split-type equipment.

The invention discloses an automatic food sorting device which comprises supporting legs, a machine body fixedly connected to the tops of the supporting legs, a protective cover hinged to the top of the machine body, a dust removal mechanism arranged on the back face of the machine body, a sorting mechanism arranged in the middle in the machine body, a feeding mechanism arranged at the bottom in the machine body and an anti-blocking mechanism arranged in the middle of the right side of the machine body. When screening work needs to be carried out, a protective cover is opened, then rice is poured into a sorting basket, a first motor is started, the first motor controls the sorting basket to rotate when working, and when the sorting basket rotates, the first motor is controlled to rotate rapidly, so that centrifugal force generated at the top in the sorting basket is increased, and screening work is completed; at the moment, a large amount of rice close to the middle is thrown to the position, close to the outer side, in the sorting basket, the stacked rice can be spread, meanwhile, under the action of centrifugal force, a first spring is stretched, when the first spring is stretched, a pushing frame is spread towards the outer side of a separation block, the rice is prevented from being stacked at the top in the sorting basket, and the screening efficiency is better.