10results about How to "Good harvesting effect" patented technology

The present invention relates to the technical field of microalgae biological solid-liquid separation, in particular to a method for predicting and optimizing the recovery efficiency of microalgae bead flotation based on machine learning. Different machine learning algorithms are introduced, and the multidimensional microalgae bead flotation data packets after screening are trained, calculated and screened based on different machine learning algorithms to obtain a trained ideal recovery efficiency prediction model; the established input features are predicted by the trained ideal recovery efficiency prediction model to obtain a predetermined recovery efficiency value, and the established recovery efficiency value is calculated using the SHAP library to determine the degree of influence of each established bead property and established operating conditions on the established recovery efficiency; the optimal bead flotation recovery conditions screened are arranged in descending order based on the degree of influence to enrich the data set of microalgae bead flotation, and the ideal recovery efficiency prediction model is optimized. The present invention can realize accurate prediction of the recovery efficiency of the microalgae bead flotation process based on the machine learning method, and significantly improve the recovery performance of the microalgae bead flotation.

This invention discloses a method for preparing a composite flotation reagent using biomass hydrothermal liquefaction products, comprising the following steps: Raw material preparation: providing biomass raw materials rich in lipids or proteins; Catalytic hydrothermal liquefaction: placing the biomass raw materials and a composite catalyst in a reactor, reacting at a temperature of 250-350℃ and a pressure of 4-20 MPa, wherein the water content of the biomass raw materials is 70-95%, and the composite catalyst contains alkaline components, metal oxide components, and rare earth element components; Product separation: separating the reaction products into oil and water to obtain bio-crude oil containing amphiphilic molecules; Flotation application: applying the bio-crude oil as a composite flotation reagent to mineral flotation, where the bio-crude oil simultaneously functions as a frother and a collector. This invention uses waste biomass as raw material to prepare a composite flotation reagent with both frother and collector functions, realizing the resource utilization of waste and the green upgrading of flotation reagents, and has the characteristics of wide raw material sources, excellent reagent performance, and environmental friendliness.

This application discloses a rubber reeling chain device and a corn harvester, belonging to the field of agricultural machinery technology. It includes a reeling chain body, a pusher plate, a limiting component, and a reeling chain core. The reeling chain body has a ring-shaped structure, with pushers spaced apart on the outer side of the reeling chain body. Both the reeling chain body and the pushers are made of rubber. The limiting component is located on the inner side of the reeling chain body and is used to install and limit the reeling chain core. The reeling chain cores are arranged along the inner side of the reeling chain body, forming a limiting cavity between adjacent reeling chain cores. The reeling chain body is used to engage with the teeth of an external sprocket through the limiting cavity and thus wrap around the sprocket. The pusher plate is driven by the reeling chain body to push the material. The reeling chain body and pusher plate are made of rubber, and the reeling chain cores are arranged and installed on the inner side of the reeling chain body through the limiting component, facilitating the engagement of the reeling chain cores with the teeth of the external sprocket and making it easier to replace a metal chain.

This utility model discloses a cumin harvester, relating to the field of cumin harvesting technology. It includes a tractor body and a mounting plate at the rear end of the tractor body. A material collection frame is provided on the outer side of the mounting plate, and a hydraulic push rod for driving the material collection frame to discharge material is provided between the mounting plate and the material collection frame. An inclined conveyor belt is provided between the tractor body and the mounting plate. In this cumin harvester, a triangular material collection component can initially collect the cut cumin, allowing it to enter the subsequent conveying process more concentratedly. Support wheels prevent the cutting table assembly from directly contacting the ground. By setting a front hydraulic lifting rod and a rear hydraulic lifting rod at the front end of the mounting frame, the height of the cutting table assembly can be flexibly adjusted. When harvesting cumin intercropped with cotton, the lifting and lowering of the cutting table assembly can be precisely controlled according to the actual position of the cotton and drip irrigation tape, effectively avoiding damage to the cotton or drip irrigation tape and greatly improving the practicality of the harvester.

A three-edged efficient leaf scraper comprises a first shaft body, a second shaft body, a first single tool a, a first single tool b, a first single tool c, a second single tool a, a second single tool b and a second single tool c. The first shaft body and the second shaft body are parallel and arranged side by side, the first single tool a, the first single tool b and the first single tool c are arranged on the first shaft body in a clockwise distribution mode, and the second single tool a, the second single tool b and the second single tool c are arranged on the second shaft body in an anticlockwise distribution mode; the sides, away from the first shaft body and the second shaft body, of the first single tool a and the second single tool a are straight lines, the sides, away from the first shaft body, of the first single tool b and the first single tool c are curves, and the sides, away from the second shaft body, of the second single tool b and the second single tool c are curves. The leaf scraping knife adopts a combined structure, is convenient to disassemble and assemble, can comprehensively and stably harvest tobacco leaves, avoids missing harvesting loss, cannot damage tobacco stems and tobacco leaves, and is high in harvesting effect.

The invention discloses a lawn harvester for building gardens, which belongs to the technical field of lawn harvesters, and mainly comprises a main body frame, a side cutting mechanism, a floating support angle adjusting mechanism, a universal wheel mechanism, a distance adjusting mechanism and a cutting mechanism, the floating supporting angle adjusting mechanism comprises a limiting ball cover, a limiting ball block and a rotating shaft rod fixed to the bottom end of the limiting ball block, a cutting disc is fixed to the bottom end of the rotating shaft rod, the cutting mechanism is installed in the middle of the bottom end of the cutting disc, and the side cutting mechanism is installed at the bottom end of one side of the main body frame. By means of the floating supporting angle adjusting mechanism and the cutting mechanism, the angle of the cutting disc can be conveniently adjusted in a self-adaptive mode according to fluctuation of the slope of the lawn of the building garden, so that uniform cutting of the slope lawn is achieved, harvesting can be conveniently conducted on long and narrow gaps through the side cutting mechanism, cutting missing can be prevented during mowing, and the mowing efficiency is improved. And the lawn harvesting effect can be improved.

This invention relates to a range-extended, all-electric, lightweight lotus root harvesting equipment. The technical solution is as follows: a buoyancy lifting chassis is composed of an electric drive walking module, a frame assembly, a buoyancy box, and a four-point linkage lifting mechanism; a low-pressure, high-flow-rate oscillating jet module, consisting of a jet module and a submersible pump suction module, is mounted on the buoyancy box to provide jet power for the entire machine; the diesel engine of the power generation module drives a generator to output three-phase AC power, which is then converted into DC power by a rectifier to charge the battery module; the battery module's power is converted by an inverter to power multiple submersible pumps, an underwater motor, a lifting platform, and a through-type stepper motor. The beneficial effects are: firstly, the oscillating floating jet mechanism improves harvesting efficiency; secondly, the diesel engine generates electricity to achieve energy storage and range extension, while the underwater motor's high-proportion reducer drives the rubber tracks; simultaneously, the electric drive enables multiple submersible pumps to work together, leveraging their high efficiency and head.

A device for artificially harvesting stem tips comprises an index finger ring and a thumb ring for use in combination, wherein the index finger ring comprises an index finger ring body and a V-shaped knife groove arranged on the outer surface of the index finger ring body, the direction of the V-shaped knife groove is parallel to the central axis of the index finger ring body; the thumb ring comprises a thumb finger ring body and a ridge-shaped knife body arranged on the outer surface of the thumb finger ring body, the direction of the ridge-shaped knife body and its top cutting edge are perpendicular to the central axis of the thumb finger ring body; the index finger ring body and the thumb finger ring body are both connected by a three-layer structure of a wear-resistant outer ring, a plastic middle ring and a flexible inner ring, the V-shaped knife groove and the ridge-shaped knife body are both fixedly connected to the wear-resistant outer ring, the shapes of the two are matched, and the overall length of the V-shaped knife groove is greater than or equal to the length of the ridge-shaped knife body. The invention is designed with reasonable structure in view of the characteristics of stems and leaves, has fast cutting effect, and high harvesting efficiency.

The application discloses a hydroxamic acid-quaternary ammonium salt ionic liquid collector and a preparation method and application thereof. The structural formula of the hydroxamic acid-quaternary ammonium salt ionic liquid collector is shown as formula (I): (I). The hydroxamic acid-quaternary ammonium salt ionic liquid collector has good collecting property and selectivity to rare earth ores compared with traditional salicylhydroxamic acid collectors, and can still achieve good collecting effect without adding a foaming agent, and has a wide application prospect.

This invention belongs to the field of metallurgical solid waste resource utilization technology, specifically disclosing a method for the comprehensive recovery of copper and iron from copper slag flotation tailings. The method involves magnetic roughing and magnetic scavenging of the copper slag flotation tailings, merging them to obtain a mixed magnetic concentrate; the mixed magnetic concentrate is regrinded to a final density of -0.038 mm (80%–95%); the regrinded product enters the flotation system, using a combination of dimethyl sulfoxide and dispersant red at a mass ratio of 1:6–8 as collectors, and undergoes two roughing, two cleaning, and two scavenging processes to obtain copper concentrate; the copper-removed tailings from the flotation process undergo two roughing and three cleaning magnetic separations to obtain iron concentrate; the middlings from the three cleaning stages are combined with the magnetic scavenging tailings to form the final tailings. This invention processes copper slag flotation tailings with a copper grade of 0.22%–0.31% and an iron grade of 40%–45%, yielding copper concentrate with a copper grade of 6.8%–8.1% and a recovery rate of 43%–48%, and iron concentrate with an iron grade of 54%–60% and a recovery rate of 69%–79%. This invention eliminates the need for roasting, achieves co-recovery of copper and iron, and features a compact process, strong reagent selectivity, and stable performance indicators.