42results about How to "Hierarchical implementation" patented technology

The invention relates to an automatic fruit grading device. The grading device comprises a box body, wherein the upper part of the box body is provided with an input conveying belt; the outlet of the input conveying belt is positioned above a transparent buffer basket; the transparent buffer basket is in a trumpet shape with a large upper part and a small lower part; the internal diameter of an elastic outlet on the lower part of the transparent buffer basket is smaller than the external diameter of fruits to be graded; a triangular steering device is arranged below the transparent buffer basket; the left side of the triangular steering device is positioned on a first output conveying belt, and the right side of the triangular steering device is positioned on a second output conveying belt; a rack is arranged at the bottom of the triangular steering device and is meshed with a power gear; a rotating shaft of the power gear is rotatably arranged on the box body; a spectrum camera is arranged on the side of the transparent buffer basket and is connected with an intelligent grading distinguishing module; the intelligent grading distinguishing module is connected with a control motor capable of rotating positively and negatively; the control motor is arranged on the box body; and an output shaft of the control motor is connected with the rotating shaft of the power gear. The automatic fruit grading device can reduce labor amount and improve production efficiency and reliability.

The invention relates to the technical field of grading and tracking based on machine vision, in particular to a walnut kernel grading method and walnut kernel grading device based on the machine vision. The walnut kernel grading method based on the machine vision sequentially comprises the following steps that historical sample data are obtained, images are processed, the images are segmented, anoriginal characteristic matrix is established, characteristics are selected, a model is founded, and grading and tracking are carried out. According to the walnut kernel grading method and walnut kernel grading device based on the machine vision, the structure is reasonable and compact, and use is convenient. After walnut kernel images are collected through the machine vision, tracking and grading are carried out on the walnut kernels by a PC host, after the walnut kernels reach a grading position, and the walnut kernels are blown into a grading discharge groove in a method of air-blowing, sothat grading of the walnut kernels is realized. The characteristics of bin19, K1 and bin15 are adopted, and a naive bayesian classification method with the best classification effect is utilized as agrading model of the walnut kernels. The grading processing is high in speed, automatic grading of dynamic walnut kernels can be realized on a conveying platform, manual grading is replaced, and labor is saved.

The invention discloses a circulating fluidized bed boiler system for achieving low nitrogen oxide discharge. The circulating fluidized bed boiler system comprises a boiler, a cyclone separator, a dust remover and an induced draft fan which are sequentially connected. The circulating fluidized bed boiler system further comprises a primary air supply system and a secondary air supply system. A flue gas recirculation pipe is guided out of the rear portion of the induced draft fan and connected with the primary air supply system and the secondary air supply system in parallel. The secondary air supply system comprises a secondary air fan, a secondary air pipe, a plurality of secondary air vertical pipes arranged on the outer sides of a front wall and a rear wall of the boiler and secondary air nozzles, wherein the secondary air nozzles are arranged on a water cooling wall, connected with the secondary air vertical pipes and arranged in a dilute phase area of the boiler in a layered manner. According to the circulating fluidized bed boiler system, part of flue gas is mixed into primary air, the fluidization characteristic of a dense phase area during low-load running is improved, part of flue gas is mixed into secondary air, the air speed of the secondary air nozzles can be increased easily, a local high-temperature area is avoided, and generated NOx is reduced. By means of the secondary air arrangement manner of the system, the disturbance function of the flue gas in a hearth is increased, fuel is combusted fully, and the generated NOx is reduced.

The invention provides a pre-locating shake-off layering harvester, which solves the problems in the prior art that winter jujubes are difficult to harvest and the harvesting efficiency is low. The pre-locating shake-off layering harvester comprises a stander, a wide-tooth shake-off mechanism, a layering pre-locating mechanism, a distance measuring mechanism, a sector unfolding collection mechanism, a roller-shaft baffle plate transmission mechanism and a threaded roller grading mechanism, wherein the stander is provided with a parallel four-rod protraction mechanism, and the parallel four-rodprotraction mechanism is driven by a first motor arranged on the stander; the wide-tooth shake-off mechanism is arranged on the parallel four-rod protraction mechanism, and the wide-tooth shake-off mechanism is driven by a second motor arranged on the stander to vibrate and used for shaking off fruits; the layering pre-locating mechanism is arranged on the layering pre-locating mechanism; the distance measuring mechanism is installed on the front end of the stander and used for detecting a distance to a trunk; the sector unfolding collection mechanism is arranged below the wide-tooth shake-off mechanism; one end of the roller-shaft baffle plate transmission mechanism is disposed on a lower end opening of the sector unfolding collection mechanism; and the threaded roller grading mechanismis arranged on one side of the roller-shaft baffle plate transmission mechanism and used for grading the transferred fruits.

The invention discloses a wheat steeping device with a classifying function, comprising a classifying screen and a wheat steeping slot, wherein the classifying screen is arranged at the top of the wheat steeping slot and is obliquely arranged, the wheat steeping slot is divided into two wheat steeping chambers; the lower part of the cylinder of the wheat steeping slot is a circular truncated conebottom, the circular truncated cone bottom is in a funnel shape and the bottom is in a circular arc shape, ventilation pipes are arranged in the two wheat steeping chamber, each ventilation pipe is formed by two straight pipes and a flat S-shaped pipe, the two ends of the flat S-shaped pipe are connected with the straight pipes, the two straight pipes respectively penetrate through the top and thebottom of the wheat steeping slot, the flat S-shaped pipe is positioned in the middle of the circular truncated cone bottom, and the bottom of the wheat steeping slot is fixedly connected with a discharge pipe, an exhaust pipe and a drain pipe. The wheat steeping device with a classifying function, disclosed by the invention, can steep wheat of different sizes separately, so that the two kinds ofwheat both achieve a good steeping quality, and further the overall growth quality of the wheat can be improved; and meanwhile, uniform ventilation of the wheat steeping slot is realized, and waste gas such as CO2 can be exhausted timely.

The invention relates to a cyclic progressive health management system for chronic and high-risk disease patients. The system is characterized by comprising an archive establishment module, a screening grading module, a management planning module, a self-management module, a follow-up evaluation module and a plan update module, wherein the archive establishment module, the screening grading module, the management planning module, the self-management module, the follow-up evaluation module and the plan update module are sequentially connected end to end to form the cyclic enclosed chain ring structure, health disease management of the patients with chronic and high-risk diseases is integrated, through archive establishment, screening, grading, management planning, self-management, follow-upevaluation and plan update, health management works such as effective documentation, screening, grading, classification, intervention, evaluation, early warning, etc. for the patients with chronic and high-risk diseases are effectively achieved.

The invention discloses a thermal-insulation microsphere particle grading device. The device is characterized in that a grading channel is provided with at least two levels of vertically arranged turning channels, the front and rear side walls of the turning channels are aligned to the front and rear edges of receiving hoppers respectively, each of the left side wall and the right side wall of each turning channel is formed by connecting vertical upper sections and lower sections inclined leftwards, air outlets are formed in the connection positions of the upper sections and the lower sections of the left side wall of each turning channel, air inlets are formed in the connection positions of the upper sections and the lower sections of the right side wall of each turning channel, horizontal air pipes are connected to the air inlets and connected with a fan or a compressed air tank, lower edges of the left and right side walls of the bottommost turning channel are aligned to the left and right edges of receiving hopper groups, the upper edge of the turning channel at the lower part is connected with the lower edge of the turning channel at the upper part, and a falling hopper is connected with the upper edge of the topmost turning channel through a conical cover and is provided with a falling channel having the same width as the inside dimension of the front and rear part of the turning channel. The thermal-insulation microsphere particle grading device can realize grading, can realize one-time multi-grade separation, is high in efficiency and can remove dust.

As for the problems that the fibrocyte and heter-cell tissue utilization in a biomass raw material has mutual influence and mutual restriction, and the traditional fiber grading method generates a great amount of sewage and is not suitable for industrialized utilization, the invention provides dry carding and grading method and equipment for long and short fibers of biomass raw materials. The method comprises the following steps of: classifying the raw materials; selecting the steam explosion condition for carrying out steam explosion treatment according to different raw materials; and charging the materials obtained after steam explosion treatment into fiber carding and grading equipment for grading to respectively obtain fiber bundle tissue and heter-cells. The steam explosion is coupled with mechanical carding and tissue grading; the carded and graded long fiber can be used for a high-quality fiber raw material of the industrial applications such as papermaking, spinning and the like; the fine fiber formed by parenchyma cells and the like can be used for producing biofertilizer and feed protein or producing a series of biochemical products, such as ethanol, butanol, 2,3-butanediol, xanthan gum and the like through enzymatic zymotechnics, and thereby the component grading separation, cleaning and high-value utilization of the biomass long and short fibers can be realized.

The invention discloses a secondary air distribution device used for a circulating fluidized bed boiler. The secondary air distribution device comprises the boiler, water walls arranged on the four walls of the interior of the boiler and provided with receding pipes and a secondary air system. The lower portion of the boiler is a dense-phase zone, and the upper portion of the boiler is a lean-phase zone. The secondary air system comprises a secondary air branch pipe, a plurality of secondary air stand pipes arranged on the outer side of the front wall of the boiler and the outer side of the rear wall of the boiler, and secondary air nozzles arranged on the water walls and connected with the secondary air stand pipes. The secondary air nozzles comprise the double nozzles and the single nozzles and are arranged in the lean-phase zone of the boiler in a layered mode. The receding pipes comprise the double-hole receding pipes and the single hole receding pipes. The disturbing effect of smoke in a boiler hearth is added through the secondary air distribution modes, fuel can be completely burnt, generation of NOx is reduced, grading of secondary air in the height direction is achieved, and grading of the secondary air in the horizontal direction is achieved.

The invention discloses an image acquisition device for navel orange grading. The image acquisition device for navel orange grading comprises a lamp, a shell (1), a turntable (2), a driving motor (3), a CCD (Charge Coupled Device) camera (4) and a CMOS (Complementary Metal Oxide Semiconductor) camera (5), wherein the turntable (2) matched with navel oranges is arranged in the shell (1), and the CCD camera (4) and the CMOS camera (5) are arranged in the shell (1) and face to the navel oranges; a rotating shaft of the driving motor (3) is connected to the turntable (2) and drives the turntable (2) to rotate, and a shell of the driving motor (3) is fixedly connected to the shell (1); the lamp is arranged inside the shell (1). The image acquisition device for navel orange grading can be used for achieving image acquisition for the navel oranges, thereby achieving navel orange grading.

The invention discloses a CT abdominal artery blood vessel grading recognition method based on deep learning, and the method comprises the following steps: 1, carrying out the image preprocessing, andobtaining a training set; 2, performing image block clipping operation on the training set to obtain a data set; 3, performing blood vessel segmentation through deep learning; 4, performing skeletaltreatment; 5, searching an intersection point; 6, accumulating intersection points. The invention designs a blood vessel grading method, and grading of abdominal artery blood vessels is more accurately realized based on the thought of firstly segmenting and then grading.

The invention provides a method of graded use of reverse flotation phosphorus concentrate pulp and relates to the technical field of phosphorus concentrate pulp classification. The method comprises the following steps of S1, crushing and ore-grinding raw ores with relatively high carbonate impurities, guaranteeing that ores of with grinding fineness of -20 meshes is greater than 80%, fully dissociating gangue minerals such as phosphorite and carbonate and controlling beneficiated pulp concentration at 25-28wt%; and S2, feeding the pulp into a first floatation stirring tank and a second floatation stirring tank for treatment, and adding an inhibitor and an adjustor sulfuric acid, sodium fluosilicate sewage and slag gallery return water into the first stirring tank, wherein the pH value of the pulp is controlled at 4.0-4.5. On a basis of rough concentrate obtained by reverse flotation rough concentration by a flotation column, graded phosphorus concentrate which is higher in quality andlower in MER value and overflow concentrate which is slightly inferior in quality and slightly high in MER value are obtained by cyclone classification, so that quality grading of the phosphorus concentrate is achieved, differential production of acid making is executed, and a purpose of superior use of superior ores, graded use and quality improvement and cost lowering is achieved.

The invention provides a wet-process precise grading device. The wet-process precise grading device comprises an overflowing barrel and a water pump connected with the overflowing barrel through a current equalizer and a flowmeter pipe; the upper portion of the overflowing barrel is cylindrical, the lower portion of the overflowing barrel is in a circular cone shape, the proportion of the height of the overflowing barrel to the diameter of the overflowing barrel is 3-5, and the horizontal initial velocity of materials at an outlet of the current equalizer ranges from 50 mm / s to 80mm / s; an inlet of the water pump is connected with a to-be-graded material slurry pool; and the upper end of the overflowing barrel is connected with a first grading material pool, and the lower end of the overflowing barrel is connected with a second grading material pool. By means of the wet-process precise grading device, according to different material particle setting speeds, the materials are graded, influences of high-speed material feeding on grading are effectively avoided, and the grading accuracy is guaranteed.

The invention discloses a powder metallurgical particle vibration grading device. The powder metallurgical particle vibration grading device comprises a vibration table and is characterized in that a vibration block is arranged on the vibration table, a slope is connected to the vibration block, side plates arranged in a bilateral symmetry manner are connected to the slope, a storage platform is connected to the upper end of the slope, a surrounding plate connected with the side plates is arranged on the platform, each side plate is divided into an upper segment and a lower segment from top to bottom along the slope, the upper segments of the two side plates are close to each other downwards and gradually along the slope, the lower segment of each side plate is sequentially and at least provided with two stages of screening areas from top to bottom along the slope, the two side plates in each stage of screening area are parallel, the distance between two parallel side plates in the upper stage of screening area is smaller than the distance between the two parallel side plates in the lower stage of screening area, and the two side plates between the two stages of screening areas are gradually away from each other along the slope from top to bottom, a layering plate is connected between two parallel side plates in each stage, and the distance between the layering plate on the upper stage and the slope is larger than the distance between the layering plate on the lower stage and the slope; the side, located at the lower end of the slope, of each layering plate before the tail stage is connected with a vertical plate, and the layering plates are connected with a discharging sliding way; the device is small, exquisite and free of hole blockage.

The vibration fluidizing density grading device for granular catalyst includes one inclined sieve plate, motor connected to the sieve plate via vibrating link rod and transmitting part, sealing hood on the sieve plate, induced draft fan connected to the sealing hood via induced draft pipeline, and feeding bin over the sieve plate with bottom pipe connected to the sealing hood via the induced draft pipeline. After the motor and the induced draft fan are on, the catalyst to be graded and fed via the feeding bin is fluidized on the vibrating sieve plate so that catalyst grains with high carbon content is exhausted from the upper end while catalyst grains with low carbon content is exhausted from the lower end. The present invention can realize grading of granular catalyst with density difference as low as 3%, and the low carbon content catalyst with average carbon content of 1.5-3.5 5 is recovered in the recovering rate of 90-95 vol%.

The invention discloses a method for grading test text reading difficulty of children based on a Ross model. The method comprises the following steps: finding text fragments involved in an answer of a reading understanding question in a text; calculating language variables of the text segments to serve as independent variables; converting the reading understanding score into a Logit value, and then converting the Logit value into a text difficulty value in a 200-1500 interval as a dependent variable; adopting a Pearson product difference correlation coefficient to screen out an independent variable with a high correlation coefficient with the dependent variable; and determining an optimal linguistic variable for predicting the dependent variable by adopting a least square method, and exporting an optimal matching function. According to the method, the Ross model and the score conversion method thereof are adopted to carry out difficulty level analysis on the text by using any number from 200 to 1500, the goodness of fit is high, and the method accords with the language characteristics of Chinese. Students can measure and calculate the difficulty level of reading the text by reading the text and completing 3-4 reading understanding questions corresponding to the text, the calculation is simple and rapid, and the method has good applicability and generalization performance.

The invention discloses a method and system for supplying power through a PoE power supply system. The method comprises the steps: performing power-on initialization on PSE power supply equipment in the PoE power supply system; detecting whether PD power receiving equipment meeting a preset standard is accessed or not by the PSE power supply equipment after power-on initialization through a detection circuit; when the PSE power supply equipment detects that PD power receiving equipment meeting a preset standard is accessed, determining the power supply power of the PD power receiving equipmentthrough a grading circuit; and supplying power to the PD power receiving equipment through the PSE power supply equipment according to the determined power supply power.

The invention discloses an automatic fruit sorting machine, and belongs to the technical field of sorting equipment. The fruit sorting machine comprises a first conveying device, a second conveying device and a third conveying device, and the machine is novel in structure and clear in working principle; first screening of fruits is completed through the first conveying device, and whether the surfaces of the fruits are damaged or black is determined; second screening of the fruits is completed through the second conveying device, and whether the other surfaces of the fruits are damaged is determined; and screening and classifying of the fruits is completed through the third conveying device. The fruit sorting machine solves the problems of large labor intensity and inaccurate classification of manual grading fruit grains, improves the grading efficiency, realizes grading of different types of fruits and screening of bad fruits, reduces the grading cost, and expands the application occasions.

The invention discloses an adjustable grid bar type round large-grain seed grading device. The device comprises a box body, wherein the side walls on the left and right sides of the box body are respectively provided with arc-shaped grooves, a plurality of mounting holes are provided on mounting bars, a plurality of grid bars are arranged across both the arc-shaped groove, the left and right endsof each grid bar respectively extend out of the two arc-shaped grooves and are bent upward to form a lateral bending section, the plurality of bending sections on the same side are connected by adjusting plates, the plurality of lateral bending sections respectively run through a plurality of adjusting holes on the adjusting plates, the upper ends of the lateral bending sections at both ends of each grid bar are bent inward to form hooks, both ends of each grid bar are respectively inserted into the mounting holes on the mounting bars on both sides through the hooks, and the distance between the two adjacent grid bars is adjusted by adjusting the upper and lower positions of the adjusting plates to realize the classification of seeds in different sizes. Compared with the prior art, the adjustable grid bar type round large-grain seed grading device has the following advantages of being able to realize the classification of seeds in different size ranges and realize continuous and stepless adjustment of classification parameters.

The invention discloses a powder metallurgical particle vibration grading device. The powder metallurgical particle vibration grading device comprises a vibration table and is characterized in that a vibration block is arranged on the vibration table, a slope is connected to the vibration block, side plates arranged in a bilateral symmetry manner are connected to the slope, a storage platform is connected to the upper end of the slope, a surrounding plate connected with the side plates is arranged on the platform, each side plate is divided into an upper segment and a lower segment from top to bottom along the slope, the upper segments of the two side plates are close to each other downwards and gradually along the slope, the lower segment of each side plate is sequentially and at least provided with two stages of screening areas from top to bottom along the slope, the two side plates in each stage of screening area are parallel, the distance between two parallel side plates in the upper stage of screening area is smaller than the distance between the two parallel side plates in the lower stage of screening area, and the two side plates between the two stages of screening areas are gradually away from each other along the slope from top to bottom, a layering plate is connected between two parallel side plates in each stage, and the distance between the layering plate on the upper stage and the slope is larger than the distance between the layering plate on the lower stage and the slope; the side, located at the lower end of the slope, of each layering plate before the tail stage is connected with a vertical plate, and the layering plates are connected with a discharging sliding way; the device is small, exquisite and free of hole blockage.

The invention provides a classification method and system for auxiliary devices of a thermal power plant and relates to the technical field of the power plant. The system comprises a data obtaining device which is used for obtaining system data of the thermal power plant; a data statistic device which is used for carrying out statics on the devices of the thermal power plant, the functions of the devices, influences on a production process and influences on production cleaning performance according to the system data; a device division device which is used for dividing the devices according to functions and classes, thereby obtaining various classes of devices; a parameter obtaining device which is used for obtaining classification parameters of the devices, wherein the classification parameters are preset set according to the functions, the influences on the production process and the influences on the production cleaning performance; and a device classification device which is used for classifying the various classes of devices according to the classification parameters. According to the method and the system, the auxiliary devices are classified, and demands of DL / T 793-2012 are expanded, thereby forming a more complete technical system and enabling an application range to be relatively wide.

The invention discloses a circulating fluidized bed boiler system for achieving low nitrogen oxide discharge. The circulating fluidized bed boiler system comprises a boiler, a cyclone separator, a dust remover and an induced draft fan which are sequentially connected. The circulating fluidized bed boiler system further comprises a primary air supply system and a secondary air supply system. A flue gas recirculation pipe is guided out of the rear portion of the induced draft fan and connected with the primary air supply system and the secondary air supply system in parallel. The secondary air supply system comprises a secondary air fan, a secondary air pipe, a plurality of secondary air vertical pipes arranged on the outer sides of a front wall and a rear wall of the boiler and secondary air nozzles, wherein the secondary air nozzles are arranged on a water cooling wall, connected with the secondary air vertical pipes and arranged in a dilute phase area of the boiler in a layered manner. According to the circulating fluidized bed boiler system, part of flue gas is mixed into primary air, the fluidization characteristic of a dense phase area during low-load running is improved, part of flue gas is mixed into secondary air, the air speed of the secondary air nozzles can be increased easily, a local high-temperature area is avoided, and generated NOx is reduced. By means of the secondary air arrangement manner of the system, the disturbance function of the flue gas in a hearth is increased, fuel is combusted fully, and the generated NOx is reduced.

The invention discloses a thermal-insulation microsphere particle grading device. The device is characterized in that a grading channel is provided with at least two levels of vertically arranged turning channels, the front and rear side walls of the turning channels are aligned to the front and rear edges of receiving hoppers respectively, each of the left side wall and the right side wall of each turning channel is formed by connecting vertical upper sections and lower sections inclined leftwards, air outlets are formed in the connection positions of the upper sections and the lower sections of the left side wall of each turning channel, air inlets are formed in the connection positions of the upper sections and the lower sections of the right side wall of each turning channel, horizontal air pipes are connected to the air inlets and connected with a fan or a compressed air tank, lower edges of the left and right side walls of the bottommost turning channel are aligned to the left and right edges of receiving hopper groups, the upper edge of the turning channel at the lower part is connected with the lower edge of the turning channel at the upper part, and a falling hopper is connected with the upper edge of the topmost turning channel through a conical cover and is provided with a falling channel having the same width as the inside dimension of the front and rear part of the turning channel. The thermal-insulation microsphere particle grading device can realize grading, can realize one-time multi-grade separation, is high in efficiency and can remove dust.

The invention provides a process afterheat classification utilization system and a method for efficient coproduction of electricity and high-grade heat by utilizing the system. The process afterheat classification utilization system not only can efficiently use external afterheat, but also can perform the classification conversion on the afterheat to output available energy to the external in such various forms as electricity and heat. After an evaporation heating device obtains the afterheat, a fluid A is vaporized by the evaporation heating device, and a fluid B is heated by the evaporation heating device; the fluid A and the fluid B respectively enter a turbine power generation device, and then, respectively enter a heat exchanger and a condenser; the condensed fluid B enters the heat exchanger after passing through a throttle valve; the fluid B and the fluid A exchange heat in the heat exchanger; then, the fluid A is pressurized by a pump to enter the evaporation heating device; and the vaporized fluid B is pressurized by a compressor to enter the evaporation heating device to finish circulation of the afterheat classification utilization system so as to obtain electric energy and heat energy. In addition, the selection and the matching of working fluids directly influence the afterheat utilization efficiency of the system.

The invention discloses a classification and cleaning system for sesame seeds separated by positive and negative pressure. The classification and cleaning system comprises a screening system (1), an impurity removal system (2) and a classification system (3). The screening system (1) comprising a hopper and at least one layer of filter screen for blocking impurities larger than the screen openings from entering the classification system (3); the impurity removal system (2) is used for removing impurities by conveying airflow towards the filter screen; the The grading system (3) is used for grading and cleaning sesame based on positive and negative pressure. According to the characteristics of sesame seeds, the present invention adopts a device combining positive and negative air pressure, so as to realize the classification of sesame seeds into good and bad grades. First, the sesame seeds are adsorbed to the seed suction hole of the separation drum through negative pressure, and then the separation drum is driven to rotate into the positive pressure zone by the transmission of the sprocket, and the sesame seeds are blown out from the seed suction hole by the positive pressure and transported to the collection bag through the seed collection bin. middle. The invention has many advantages such as safety, reliability, convenience and flexibility, and high efficiency.

The invention discloses an adjustable grate-type circular large-grain seed grading device, which comprises a box body, arc-shaped grooves are respectively opened on the side walls on the left and right sides of the box body, and a plurality of installation holes are arranged on the installation bar, two A plurality of grid bars are arranged across the arc-shaped groove, and the left and right ends of each grid bar protrude out of the two arc-shaped slots and are bent upward to form a lateral bending section. Multiple lateral bending sections on the same side The folded sections are connected by adjusting plates, and multiple laterally bent sections respectively pass through multiple adjusting holes on the adjusting plate. The two ends are respectively inserted into the installation holes on the installation bars on both sides through the hooks, and the distance between two adjacent grid bars is adjusted by adjusting the up and down positions of the adjustment plate, so as to realize the grading of seeds in different size ranges. Compared with the prior art, the present invention has the following advantages: the grading of seeds in different size ranges can be realized and the continuous stepless adjustment of grading parameters can be realized.

The invention discloses a filtering mechanism of a stone breaking device for geological exploration. A secondary filtering and grading cylinder is provided with a cylinder inner cavity, a secondary filtering net is arranged on the lower middle portion of the cylinder inner cavity, grading steps of a step structure are arranged on the inner wall of the cylinder inner cavity, the grading steps are arranged to enable the inner diameter of the cylinder cavity of the step structure located on the upper portion to be larger than that of the cylinder cavity of the step structure located on the lowerportion, so that after the secondary filtering and grading cylinder conducts oscillation filtering and grading, and small-particle gravel is located below the cylinder cavity of the step structure; and a secondary filtering and grading driving mechanism is arranged to at least enable the secondary filtering and grading cylinder to achieve oscillation movement in three modes of up-down oscillation,horizontal transverse movement oscillation and oscillating oscillation around the vertical axis, gravel can be effectively and rapidly screened and graded, the screening and grading efficiency is guaranteed, and the reliability of gravel filtration is improved.

The invention relates to a mussel grading device. The mussel grading device comprises a plurality of grading screen drums which are arranged in parallel at intervals, wherein the grading screen drumsare horizontally arranged and drum walls are close to each other; penetrating strip-shaped openings are formed in the grading screen drums; the length direction of each of the penetrating strip-shapedopenings is parallel to that of each of the grading screen drums; a plurality of penetrating strip-shaped openings are formed in the circumferential directions of the grading screen drums at intervals; the plurality of grading screen drums are driven by a driving unit to be rotated synchronously in the same direction; the width and the length of each of the penetrating strip-shaped openings are gradually increased along the conveying direction of materials; material receiving tracks are arranged in the drum cavities of the plurality of grading screen drums; the track surfaces of the materialreceiving tracks are perpendicular to the material supply directions of the grading screen drums in the horizontal and conveying direction; due to the rotary grading screen drums, mussels climb up along the surfaces of the grading screen drums, so that the mussels with smaller sizes can be fallen on the material receiving tracks from the corresponding penetrating strip-shaped opening formed in thefirst level of grading screen drum, and the mussels with larger sizes climb onto the second level of grading screen drum from the first level of grading screen drum, so that screening of the musselswith larger sizes can be realized, and grading of the mussels is realized.

The invention discloses a red date sorting system based on machine vision. The red date sorting system comprises a sorting table, a sorting identification module and a classification processing module, an image on a conveying belt is collected and preprocessed in real time through an image collecting module in the sorting and recognizing module, the processed image is sent to a feature processing module in the classifying and processing module, the feature processing module firstly judges whether red dates exist in the image or not through a feature comparison unit, and if yes, the red dates exist in the image. If yes, red dates in the image are detected through a size measurement node, a color recognition node and a defect detection node in the red date grading unit, the grade of the red dates is judged according to a preset standard, and a grading sorting module controls a mechanical claw to sort the red dates on a conveying belt; the device has the advantages of simple structure, convenience in operation, easiness in implementation and accuracy in grading.

The invention provides a chemical heat insulation composite film and a preparation process thereof, the composite film comprises: a polyester film layer comprising a first polyester film layer and a second polyester film layer, the density of the first polyester film layer being greater than the density of the second polyester film layer; the fluorine-silicon nano coating is coated on the second polyester film layer; the first polyester film layer, the second polyester film layer and the fluorosilicone nano coating are sequentially arranged to form the composite film. The composite film and the preparation process thereof have the advantages of being simple in structure, low in production cost, high in efficiency and good in heat insulation and heat preservation performance, mechanical strength, damp-heat aging resistance and corrosion resistance.