28124results about "Screening" patented technology

The invention provides a defect detection method and system for integrated circuit manufacturing. Wherein in the integrated circuit packaging stage, packaged chips are divided into a first type of chips meeting a preset physical characteristic threshold value and a second type of chips exceeding the physical characteristic threshold value through a pneumatic sorting device; performing scanning electron microscope imaging on the surface of the second type of chip, generating a three-dimensional topological structure by using an image reconstruction technology, and positioning a micron-sized particle defect area by comparing reference type differences; synchronously applying high-frequency electric signal excitation in the sorting process, detecting impedance response of the second type of chips, and recording an abnormal signal sequence exceeding a preset frequency domain range; performing space-time correlation matching on the micron-sized particle defect area and the abnormal signal sequence, and judging that the defect is a multi-layer composite defect when a preset coupling condition is met; and dynamically adjusting the mesh diameter and vibration frequency parameters of the pneumatic sorting device. According to the technical scheme provided by the invention, accurate identification of the multi-layer composite defect of the chip is realized, and the defect interception efficiency is remarkably improved.

A batch feeding-based multi-stage screening device for granular materials, comprising a housing (1). A quantification assembly (2) is installed at the top of the housing (1), a dust removal assembly (3) is installed outside the housing (1), and an anti-blocking assembly (6) is installed inside the housing (1); the dust removal assembly (3) comprises a mounting plate (305) and a fixed column (304); the mounting plate (305) and the fixed column (304) are both fixedly connected to the outside of the housing (1), a rack plate (306) is slidably connected to the outer surface of the mounting plate (305), a movable rod (311) is fixedly connected to the bottom end of the rack plate (306), a rubber piston (312) is fixedly connected to the bottom end of the movable rod (311), and a filter box (301) is fixedly connected to the outside of the housing (1). A large amount of dust on the surface of rice grains can be adsorbed, filtered and removed by means of the dust removal assembly, thereby improving the quality of rice.

The invention relates to the technical field of screening, in particular to a dynamic sorting method and system based on multistage screening and airflow compensation. The method comprises the steps that 1, space phase screening pretreatment is conducted, specifically, in a rotary type multidirectional screening channel, white rice is made to rotate through a flow guide structure, the included angle between the long axis direction of rice grains and the long edge of a screening hole is obtained in real time, and the rotating angular speed of a screen is dynamically adjusted according to the included angle; 2, mass-airflow coupling sorting is carried out; step 3, performing deformation feedback optical sorting; 4, energy field cooperative control; and 5, dynamic convergence optimization: collecting a screen mesh pore passing rate, a rice grain group distribution entropy value and system total energy consumption power, constructing a state space, and adjusting vibration frequency, airflow pressure and light intensity parameters by adopting a stability judgment algorithm. According to the method, the screening precision is improved, the energy consumption is reduced, the production efficiency is improved, and the method has remarkable practical application value for the grain processing industry.

The invention relates to the technical field of parameter control, and discloses a vibrating screen parameter self-adaptive control method and system based on machine learning. The method comprises the following steps: collecting coal characteristic parameters through an image device and a sensor; calculating a load coefficient and a difficulty index according to the parameters, and adjusting the parameters of the dual-motor vibration exciter to control vibration; the spring pre-tightening force and the screen surface inclination angle are adjusted according to vibration feedback, and the screening track is optimized; and the feeding speed and the baffle height are adjusted based on screening efficiency data, and self-adaptive control is achieved. The technical problems that traditional vibrating screen fixed parameter control cannot adapt to multi-coal-type changes, a vibrating screen control system lacks coal material characteristic real-time sensing and analyzing capacity, and a precise mapping and dynamic optimization mechanism is lacked between vibrating parameters and screening efficiency are solved.

The invention relates to the technical field of screening, and discloses an iron ore powder and antifreezing agent mixed screening device which comprises a rack, and the surface where the top of the rack is located is inclined; a first bearing seat is mounted on the rack, a roller with a rubber wheel surface is rotationally connected to the first bearing seat, a universal coupling is connected to the shaft end of the roller, a shaft rod is connected to the other end of the universal coupling, a speed reducer arranged on a second supporting seat is connected to the free end of the shaft rod, and the second supporting seat is connected with the rack; the speed reducer is driven by a first motor arranged on the rack, and the first motor and the speed reducer transmit power through belt transmission; a drum screen assembly used for improving the mixing uniformity of the iron ore powder and the anti-freezing agent is connected to the rolling wheel in a rolling mode, and mixed materials are discharged from screen holes of the drum screen assembly. Mixing, screening, conveying and cleaning are integrated, mixing uniformity is high, screening efficiency is excellent, operation and maintenance are convenient and fast, and the requirement for mixing and screening of iron ore powder and an anti-freezing agent is met.

The invention discloses a glass bead sorting device, and belongs to the field of glass bead sorting. The glass bead sorting device comprises a base plate, a positioning ring is fixedly connected to the top of the base plate, outer sleeves are rotationally connected to the two sides of the positioning ring, a screening barrel is rotationally connected between the outer sleeves on the two sides, limiting seats are fixedly connected to the two sides of the base plate, and limiting rings are fixedly connected to the outer walls of the outer sleeves on the two sides; through rotation of the outer sleeve and the screening cylinder, quick sorting of glass beads with different particle sizes is achieved, the glass beads can be automatically separated under the action of gravity, the anti-blocking effect on the screening cylinder is achieved, and the sorting effect is improved; and the outer sleeve and the screening barrel generate a vibration effect through cooperation of repulsive cooperation of the magnetic plate and the knocking plate and the rebound effect of the knocking spring, so that rolling of glass beads is accelerated, the sorting efficiency is improved, blockages on the screening barrel are conveniently vibrated out, and the sorting effect of the screening barrel is improved.

The invention relates to the technical field of chemical raw material processing, and discloses a petroleum coke particle size grading and batching system which comprises a raw material pretreatment module, a multi-stage dynamic screening module, a particle size real-time monitoring module, an intelligent batching decision module and a closed-loop control execution module. The classification definiteness of materials with different particle sizes is ensured; meanwhile, through a particle size monitoring feedback mechanism, the particle size distribution abnormal state in the screening process is recognized in real time, the material purity within the target particle size range is guaranteed, the particle size grading accuracy is improved, a closed-loop matching decision module is arranged, particle matching weight parameters are dynamically optimized in combination with the electrolytic aluminum process requirement, and the particle size grading accuracy is improved. The deviation degree between the ingredient proportion and the target performance can be judged in real time; the speed ratio of the conveying belt and the opening degree of the stock bin are automatically corrected through the executing mechanism, it is guaranteed that the mixing proportion of coarse particles, medium particles and fine particles is always in the optimal interval matched with electrolytic aluminum anode production, and the quality stability of anode carbon blocks is improved.

The invention relates to the technical field of grain sorting and cleaning, in particular to a multi-modal sensor fusion-based grain quality dynamic grading and stone removal cooperative control method, which comprises the following steps of: 1, synchronously collecting by a multi-modal sensor, and generating a synchronous pulse through a high-speed photoelectric trigger when grains fall, a linear array camera is triggered to collect grain surface morphology sequence images, a near-infrared spectrometer collects an absorbance curve and moisture content data, and a piezoelectric weighing platform collects impact pressure waveforms; step 2, dynamic grading decision making; step 3, generation of collaborative parameters; 4, executing and feedback optimization, and issuing the generated parameters to a vibrating screen, a fan and an inclination angle adjusting mechanism to execute control; and detecting the proportion of residual impurities at a stone removal outlet, and triggering the cascade decision-making model to retrain when the proportion exceeds the limit continuously. Through the design, the grain grading and stone removing efficiency and accuracy are remarkably improved, and high-quality product experience and value-added benefits are provided for users.

System for use in directing a sorting operation includes receptacles configured for receiving articles therein, and a sleeve removably attached to each receptacle such that an upper portion of the sleeve extending upward above a top rim of the receptacle and defining an opening that permits access to the receiving space of the receptacle; and automated transport devices for transporting and depositing articles into the receptacles. The system configured to: assign a first count of articles to a receptacle such that the first count of articles overfills the receptacle and direct the transport devices to transport and deposit the first count of articles into the receptacle after the sleeve is removably attached over a top region of the receptacle.

Systems, devices and methods for screening materials or industrial products, such as foundry coke, are disclosed herein. In some embodiments, representative systems and / or devices can include (i) a plurality of screening members each extending along a first axis, wherein the screening members are configured to make contact with a material to be screened, (ii) a plurality of elevating members extending along the first axis, wherein individual elevating member are coupled to a lower portion of corresponding individual screening members, and (iii) a cross support extending along a second axis angled relative to the first axis, wherein the cross support is coupled to a lower portion of at least some of the elevating members.

The urea crusher comprises a first crushing box and a second crushing box, a feeding hopper is arranged on the first crushing box, a crushing mechanism is arranged in the first crushing box, a screening mechanism is arranged at the position, located below the crushing mechanism, in the first crushing box through an adjusting mechanism, and a discharging opening is formed in the bottom end of the first crushing box. An empty groove matched with the screening mechanism is formed in one side wall of the crushing box, a guide-out plate is obliquely arranged at the end of the empty groove, the first crushing box and the second crushing box are the same in structure, and the guide-out plate of the first crushing box is matched with the feeding hopper of the second crushing box. The urea crushing device has the beneficial effects that crushed urea can be conveniently vibrated and screened, then urea with the proper particle size can be conveniently collected, subsequent processing and using are facilitated, meanwhile, urea with the large particle size can be conveniently screened and discharged, it is prevented that the urea is left on a screen, the urea can be discharged and crushed again, waste can be avoided, and the production cost is reduced. And screen mesh blockage caused by long-time use can be avoided, and the screening effect is ensured.

The invention relates to the technical field of screening and collecting equipment, and particularly discloses a magnesium ingot cutting material collecting device which comprises a magnesium chip collecting box, a screening mechanism and a magnesium powder collecting assembly, the screening mechanism is used for separating magnesium chips from magnesium powder and comprises a box body, a screen, a vibration assembly and an air blowing assembly, and a material inlet and a magnesium chip outlet are formed in the box body; a magnesium chip and magnesium powder mixed material can fall on the screen when being conveyed into the box body, and the screen can drive magnesium chips to move towards the magnesium chip outlet when vibrating; the air blowing assembly is used for outputting upward separation airflow, the separation airflow can carry magnesium powder to move upwards when passing through the screen, so that the magnesium powder is separated from the magnesium chips, the magnesium powder collecting assembly is located above the screen, and the separation airflow can carry the magnesium powder to enter the magnesium powder collecting assembly. During use, magnesium chips and magnesium powder can be separated and collected, so that fire or explosion possibly caused by static electricity, friction or high temperature during storage due to the fact that the magnesium chips contain the magnesium powder is prevented.

The invention discloses an automatic removing vibrating screen, and relates to the technical field of vibrating screens, the automatic removing vibrating screen comprises a vibrating assembly, a screening assembly, a connecting pipe and a cleaning assembly, the screening assembly comprises a screening round box, a C-shaped fan-shaped seat, a penetrating through hole, a discharging opening, a C-shaped partition plate, a rotating disc, a T-shaped through hole, a screen, a discharging notch, a guiding opening and a driving motor; the rotating disc is driven by the driving motor to rotate so that the alignment states of the four screens and the penetrating through holes can be switched, screening operation of different granularities can be achieved, and the cleaning assembly is used for conducting reverse blowing cleaning operation on the switched screens. By arranging the screening assembly, screening operation of different particle sizes and different grading numbers of different raw materials can be achieved, meanwhile, by arranging the cleaning assembly, residual materials on the screen can be cleaned and collected, follow-up use is facilitated, and compared with a traditional operation mode that the screen needs to be detached to be replaced and cleaned, the screening operation efficiency is improved. The whole operation is simpler, easier and more efficient.

The invention discloses screw type injection molding equipment for injection molding, and relates to the technical field of injection molding devices, the screw type injection molding equipment comprises an injection molding machine and a material pipe, and the top of the material pipe is provided with a conveying mechanism capable of discharging plastic particles; according to the plastic particle stirring device, the spiral blades can do circular motion around the transmission gear through the transmission gear and the connecting plate, dead corners in the charging barrel are reduced, it is ensured that plastic particles in the charging barrel can be fully stirred, meanwhile, through the threaded shape of the spiral blades, the plastic particles can be turned up and down when the spiral blades rotate, and the stirring efficiency is improved. And the plastic particles can be longitudinally shaken while the drying effect of the plastic particles is improved, and the surfaces of the plastic particles are primarily cleaned through shaking.

The invention discloses a double-roller spin vibration screen with an anti-blocking function, and relates to the technical field of grain screening, the double-roller spin vibration screen comprises a support, a flow dividing channel is cooperatively installed on the upper side of the support, a feeding bin is cooperatively installed on the upper side of the flow dividing channel, and a first screening box and a second screening box are cooperatively installed on the support; a screening plate is cooperatively installed in the second screening box, a roller frame is rotatably and cooperatively installed in the first screening box, a first rotary screening part is cooperatively installed on the roller frame, the first rotary screening part comprises a first screening cylinder, a first fixing plate and a second fixing plate, the first screening cylinder is cooperatively installed on the roller frame, and the second screening cylinder is cooperatively installed on the roller frame. And a plurality of first through holes are formed in the first screening cylinder. The section of the first through hole is in a lightning shape, and by means of the structure, even if straw is clamped in the first through hole, the cleanliness of the first through hole is improved due to the fact that the structure of the first through hole cannot penetrate through the first through hole.

The invention relates to a slag charge adding device for smelting low-phosphorus steel through a high-silicon molten iron converter double-slag method, and relates to the technical field of steel-making slag charge adding. The slag charge adding device comprises a base, a converter body is installed on the base, a fixing frame is fixedly connected to the base, a moving assembly is arranged on the fixing frame, a storage barrel is arranged on the moving assembly, and the storage barrel is connected with the converter body. A sorting assembly is arranged below the storage barrel, and the lower portion of the sorting assembly communicates with a spreading disc. The method has the advantages that the slag materials are separated and scattered in different areas according to different sizes, large particles fall into the center position close to the converter body, small particles fall into the area close to the side wall of the converter body, and the temperature of the center position of the converter body is usually the highest area, so that the slag materials are separated; and the high temperature is beneficial for increasing the melting speed of the large-particle slag charge, so that the large-particle slag charge can participate in the chemical reaction of steelmaking more quickly.

The invention discloses a powder coating hopper anti-blocking device, and relates to the technical field of anti-blocking devices, the powder coating hopper anti-blocking device comprises a screening structure, the screening structure comprises a screening assembly and a guide assembly, the guide assembly and the screening assembly are driven to move synchronously to screen powder coatings, and the powder coatings are screened through the synergistic effect of a reflecting plate, a barrier plate and a triangular guide plate and the matched use of a spiral structure; the guiding assembly and the screening assembly are driven to synchronously move so as to screen powder coating, and effective separation of fine-particle coating and large-particle coating is achieved. The reflecting plate is obliquely mounted, and the kinetic energy advantage of large-particle coating is utilized to guide the large-particle coating into the powder storage area; the fine-particle coating is effectively blocked from passing through the blocking plate; the inclined plane design of the triangular guide plate ensures that the large-particle coating can smoothly slide to the coarse material outlet, the accuracy and reliability of the screening result are ensured, and meanwhile, the screening assembly is arranged below the emptying hopper, so that the undesirable phenomenon of dust diffusion caused by flying of the fine-particle coating can be avoided.

The invention discloses a waste rubber sealing element recovery treatment all-in-one machine, and relates to the technical field of waste recovery, the waste rubber sealing element recovery treatment all-in-one machine comprises a treatment box, the outer wall of the front side of the treatment box is fixedly connected with a feeding hopper, the inner wall of the treatment box is fixedly connected with a sieve plate, and the outer wall of the front side of the treatment box is provided with a discharge port corresponding to the sieve plate. When the rubber sealing element is processed, the first driving motor drives the roller to rotate, rubber particles are screened through the screen holes, the particles meeting the size are thrown out, the particles which do not meet the standard are taken back through the blocking plate to be smashed again, the particle size uniformity is ensured, meanwhile, the knocking block is matched with the triggering rod, the sealing element accurately falls onto the smashing roller, deviation is avoided, and the screen holes are prevented from being blocked. And in addition, an inner gear ring and a third gear synchronously drive a rotating rod to rotate, a power-on guide column is matched with a magnetic attraction ring, the magnetic attraction ring moves in a reciprocating mode to attract metal impurities, the impurities fly into a magnetic collecting barrel after power failure, and the impurity removal efficiency and the rubber recovery purity and quality are improved.

The utility model discloses a hammer crusher, which belongs to the technical field of material crushing and specifically comprises a shell, a hammer component and a sieve plate, the hammer component and the sieve plate are arranged in the shell, a dredging component is arranged below the sieve plate and comprises dredging rods and a driving mechanism, the number of the dredging rods corresponds to that of holes of the sieve plate, and the driving mechanism controls the dredging rods to be inserted into or separated from the holes of the sieve plate. The dredging assembly is arranged in the machine shell, when the holes of the sieve plate are blocked and in the shutdown state, the driving mechanism controls the dredging rod to eject broken stones in the holes of the sieve plate out, blockage in the holes of the sieve plate can be cleared away without taking out the sieve plate when the sieve plate is blocked, time and labor are saved, and the cleaning efficiency is improved. And the cleaning efficiency is effectively improved.

The invention relates to the technical field of metal plate processing and cutting, and discloses a metal plate processing and cutting device which comprises a mounting frame, a feeding and discharging assembly is arranged on the rear side of the mounting frame, a to-be-cut placing block is fixedly connected to the rear left side of the mounting frame, and a cut placing block is fixedly connected to the left side of the to-be-cut placing block. The device comprises a mounting frame, a placing frame assembly is arranged in the mounting frame, a cutting assembly is arranged at the top end of the mounting frame, a screening assembly is arranged on the inner bottom wall of the mounting frame, a protection frame is fixedly connected to the top end of the mounting frame, and a smoke discharging and dust removing assembly is arranged at the top of the protection frame. A metal plate can be accurately cut according to a preset path through the laser cutter under the control of the numerical control module, deviation and temperature change of a laser beam are monitored in real time through the sensor, and large metal waste and small slag can be automatically separated through reciprocating knocking driven by the cam and continuous vibration of the screen.

A crushing apparatus for treating waste lithium batteries, comprising a supporting bottom plate (1). A crushing box (2) is provided above the supporting bottom plate, a fixing plate (8) is provided below the crushing box, a supporting block (4) and two fixing blocks (6) are fixedly connected to the upper surface of the supporting bottom plate, a threaded rod (10) is rotatably connected between the supporting block and the supporting bottom plate, a screening box (9) is provided above the fixing plate, and a vibration motor (21) is fixedly mounted on the left surface of the screening box. When it is necessary to crush waste lithium batteries, a first motor (5) is started, an output shaft of the first motor drives the front gear among two gears (15) to rotate, the two gears mesh with each other in the rotation process, and at the moment, two crushing rollers (3) fixedly connected to the two gears also rotate accordingly. The two crushing rollers rotate towards each other to effectively crush the waste lithium batteries, the slag obtained by crushing falls into the screening box provided below for conveyance, and a screening mesh (17) is provided in the screening box. The screening efficiency can be improved by means of the vibration of the vibration motor, and the distance between the crushing box and the screening box can be adjusted according to needs.

The utility model relates to the technical field of crop straw packing and compacting, in particular to a crop straw packing and compacting device which is convenient for compacting straws at multiple stations, improves the compacting efficiency, is convenient for crushing and screening the straws and improves the compacting quality. Comprising a compaction mechanism; the device further comprises a smashing mechanism, a screening mechanism, a driving mechanism, a material distributing mechanism and a switching mechanism, the screening mechanism is installed at the bottom end of the smashing mechanism, the driving mechanism is installed on the screening mechanism, the material distributing mechanism is installed at the bottom end of the screening mechanism, the switching mechanism is installed on the material distributing mechanism, and the compacting mechanism is installed on the material distributing mechanism. Straw is smashed through the smashing mechanism, the driving mechanism drives the screening mechanism to screen the smashed straw, the distributing mechanism conducts multi-station packaging and compacting, the switching mechanism assists the distributing mechanism in feeding switching, and the compacting mechanism conducts compacting on the straw.

The utility model relates to the technical field of craft beer, and discloses a craft beer malt crushing device, the craft beer malt crushing device comprises a main body, a crushing assembly is provided inside the main body, a crushing structure is provided inside the main body, an auxiliary structure is provided inside the main body, the crushing structure comprises: an auxiliary shell, the outer wall of the main body is fixedly connected with the auxiliary shell, a discharge port is provided on the side wall of the main body close to one end of the auxiliary shell, and a discharge port is provided on the side wall of the main body close to one end of the auxiliary shell. The craft beer malt crushing device is provided with a crushing structure, and the crushing structure can transport the craft beer malt that has not been completely crushed to the top of the crushing assembly, and then the craft beer malt is crushed again by the crushing assembly, thereby improving the crushing effect of the crushing device on the craft beer malt, and thereby improving the crushing quality of the crushing device.

The invention relates to the technical field of plasma spraying, and discloses a plasma laser automatic composite spraying system which comprises a plasma composite laser spraying gun and an anti-blocking device. The plasma composite laser spraying gun, the powder feeding mechanism and the control panel are arranged to form a stable plasma laser automatic spraying system, efficient spraying of metal components is achieved, meanwhile, an anti-blocking device is further arranged, and through meshing transmission of a main bevel gear, a first auxiliary bevel gear and a second auxiliary bevel gear, the efficient spraying of the metal components is achieved. The first screening assembly and the second screening assembly can rotate synchronously and oppositely, so that bidirectional multiple screening of the spraying powder is achieved, the size of the powder is reduced, the problem of blockage in subsequent use is solved, meanwhile, the stirring assembly can be operated in a linkage mode to further stir the screened powder in a reciprocating mode, the powder is looser, and the powder quality is improved. Therefore, multiple times of screening and stirring of the spraying powder are achieved, the spraying powder is smoothly sprayed and used, and the spraying blocking problem is reduced.

The utility model relates to the technical field of screening, and discloses an anti-blocking step-by-step screening device which is characterized in that when a control assembly is arranged and an output shaft of a motor drives a rotating rod and a rotating disc to rotate, latches fixed on the surface of the rotating disc abut against a second rack to move; a horizontal rod fixed to the surface of a second rack is stressed to transversely slide in two sets of protruding blocks, when the horizontal rod moves, a transverse rod fixed to the surface of the horizontal rod can drive a first rack to slide on the surface of a gear, and the gear is stressed to drive a round rod and a disc to rotate on the surface of a fixing plate; a stirring plate fixed to the surface of the disc can synchronously stir on the surface of the first screening plate, materials gathered on the surface of the first screening plate are stirred, and the materials are evenly distributed on the surface of the first screening plate, in this way, substances with different particle sizes can be separated more meticulously, the screening precision is improved, meanwhile, compared with a directly-arranged inclined filtering plate, the screening efficiency is improved, and the screening efficiency is improved. And the condition of local material accumulation can be avoided.

The utility model discloses an on-line separation and classification device for large and medium redried tobacco sheets. The separation and classification device comprises a conveyor (1), a first-stage vibrating screen (4), a conveying plate (5), a first-stage discharge hopper (6), a second-stage vibrating screen (9), a second-stage discharge hopper (10) and a third-stage discharge hopper (11), the first-stage vibrating screen (4) and the second-stage vibrating screen (9) respectively comprise a first-stage screen plate (2) and a second-stage screen plate (7), the surface screening surfaces of the first-stage screen plate (2) and the second-stage screen plate (7) are arranged to be wave-shaped surfaces, and the wave-shaped surfaces are space curved surfaces formed by orthogonality of curved surfaces formed by moving along a first track and curved surfaces formed by moving along a second track; the loose conveying and screening effects are better, large tobacco flakes and medium tobacco flakes can be loosened and screened, for the tobacco shred making and cigarette rolling process, the medium tobacco flake rate is increased, the filament rate of tobacco shred making is controlled, the tobacco shred structure of medium and thin cigarettes is improved, and the cigarette quality is improved.

The invention discloses a comprehensive treatment method of lotus seeds, and belongs to the technical field of deep processing of agricultural products. The method comprises the following steps: collecting dry shell lotuses and sending to step S2; s2, grading the lotus seeds with the dry shells, shelling the lotus seeds with a shelling machine, gathering the lotus seeds, winnowing the lotus seeds, and sending the lotus seeds to the step S3; s3, carrying out color sorting by adopting a color sorter, and sending qualified red lotus seeds to step S4; the shelled lotus seeds are sent to the step S2; the semi-finished product is sent to step S5; s4, the red lotus seeds are manually selected, and red lotus seed products are obtained; s5, grading the semi-finished product, removing cores, gathering, screening out lotus cores to obtain core-removed red lotus seeds, and respectively sending the core-removed red lotus seeds to step S6 and / or S7; s6, screening and manually selecting the red lotus seeds without cores to obtain red lotus seed products without cores; s7, grading the red lotus seeds without the cores, grinding the red lotus seeds, collecting the red lotus seeds and sending the red lotus seeds to the step S8; and S8, performing color sorting on the polished lotus seeds, and then performing screening and manual selection to obtain white lotus seed products.