33 results about "Mechanical screening" patented technology

To provide a foreign matter separator and a foreign matter separation method that allow separation of metal wires being foreign matters contained in dust collected by a dust collector.SOLUTION: Dust collected by a dust collector 1 is mechanically sieved with a sieve 5, and the sieved dust is guided to a vertical pipe 7. Then, a gaseous matter is flown in from a lower part of the vertical pipe 7 to generate upward current inside the vertical pipe 7. Further, dust which has been separated according to flotation caused by the upward current is guided to a dust storage tank 8, and metal wires in the sieved dust are sedimented to be separated.SELECTED DRAWING: Figure 1

The utility model belongs to the field of screening devices, and particularly relates to a mechanical screening device for rockfill materials, which comprises a screening box, supporting legs are fixedly connected to the lower end of the screening box, a frame is hinged to the interior of the screening box, a screen is fixedly connected to the interior of the frame, and a vibrating mechanism is arranged on the screening box. A material guide plate is hinged to the interior of the screening box, a buffering mechanism is arranged in the screening box, and a guide groove is fixedly connected to the surface of the screening box. The connecting sleeve is driven by the motor to rotate, so that the eccentric wheel rotates to collide with the screen mesh, and when the device is used, the screen mesh can vibrate, large-particle stones are prevented from being clamped in screen holes of the screen mesh, and screening of the screen mesh is more efficient.

The utility model provides a kind of high-precision vibrating bolt screening equipment, belong to bolt screening technical field, including the preliminary screening vibration tank being obliquely arranged on rack, the inner wall of preliminary screening vibration tank is uniformly rotationally arranged with screen roller, synchronous rotating component that drives all adjacent screen roller to rotate in the same direction is arranged on rack, the blanking side of preliminary screening vibration tank is formed gradually narrow discharge slide by the baffle of fixed connection, the outlet of discharge slide is butt joint with the material guide chute being fixed on rack, adopt two-stage screening structure, size pre-screening is realized by screen roller spacing in preliminary screening, high-precision detection is carried out to bolt appearance, defect and other details by image recognition instrument in secondary screening, realize the automatic separation of qualified product and unqualified product in combination with rudder-driven secondary screening groove steering control, detection precision is much higher than traditional manual or single mechanical screening.

The application provides a magnesium-gadolinium binary alloy fuel powder and a preparation method and system thereof. The mass content of gadolinium in the magnesium-gadolinium binary alloy fuel powder is 6-30%, the density is 2.11-3.59 g / cm 3 , and the mass heat value is 20.01-24.06 kJ / g. The preparation method comprises the following steps: under the condition of argon positive pressure, melting the metal containing magnesium and gadolinium in a manganese steel crucible smelting furnace, conveying the obtained magnesium-gadolinium binary alloy liquid to a tightly coupled gas atomization tank for atomization through a stainless steel conveying pipe, and obtaining the magnesium-gadolinium binary alloy fuel powder after screening. The system comprises a smelting furnace, a tightly coupled gas atomization tank, a liquid conveying pipeline, a mechanical screening machine, an air flow sorting machine and a high-pressure argon tank. The application solves the phase segregation caused by the high density difference between magnesium and gadolinium in the magnesium-gadolinium alloy atomization powder preparation, and the safety problem caused by the volatility of magnesium, and the prepared magnesium-gadolinium alloy powder has a uniform metallographic structure and no serious segregation.

The utility model discloses a damping type wood fiber powder screening machine, which belongs to the technical field of fiber powder screening equipment and comprises a workbench, a vibrating frame is arranged at the top of the workbench, a fixing shaft is fixedly mounted in one end of the vibrating frame, connecting rods are hinged to two ends of the fixing shaft, and the connecting rods are connected with the vibrating frame. The rapid and efficient screening process is achieved, and compared with a traditional manual screening mode or a low-efficiency mechanical screening mode, a large amount of fiber powder can be treated within a short time, so that the production efficiency of the screening link is greatly improved, and the screening efficiency is improved. According to the screening machine, the screening plate can be effectively cleaned, maintained or replaced conveniently, the screening plate can be effectively prevented from loosening or shifting due to vibration through double fixing, and therefore the reliability of the whole screening machine is improved, impact of vibration force can be effectively buffered and absorbed, loosening, deformation or damage of equipment parts can be avoided, and the service life of the screening machine is prolonged.

The utility model relates to a cage type soil screening machine which is characterized by comprising a support, a box body installed on the support, a screen drum connected in the box body in a rotating mode, a driving assembly installed on the box body and used for driving the screen drum to rotate, a cover plate fixedly connected to the upper side of the box body, and a feeding pipe installed on one side of the box body. A discharging opening of the feeding pipe is correspondingly formed between the cover plate and the screen drum, and an air draft assembly is further installed on the box body and corresponds to the screen drum. The utility model has the advantages that the cage type screen drum and the cylinder structure with two open sides are adopted, the leakage holes are formed in the wall of the drum, the traditional screen is replaced, and meanwhile, the scraping plate is arranged on the lower side of the screen drum, so that the winding risk is reduced. Wind power is combined with the screen drum to strengthen the separation effect, the air draft assembly and the fan are connected with the air filter drum, the filter screen is arranged between the air draft assembly and the fan, directional airflow is generated, light straw is blown up and made to suspend or turn over in the screen drum, heavy soil, pebbles and other impurities fall down through the leakage holes, the synergistic effect of wind power and mechanical screening is achieved, and the impurity removal rate is increased.

The utility model relates to the technical field of particle separation, in particular to an activated carbon particle separation filter which comprises a spiral separation tower, a multi-stage filtering assembly and a pneumatic circulation system, a storage hopper is fixedly installed at the top of the spiral separation tower, and a conical barrel is fixedly installed in the spiral separation tower. A material guide cone is arranged in the conical barrel, and a spiral flow guide plate is fixedly installed on the outer wall of the material guide cone. According to the utility model, the defects in the prior art are overcome, fine particles in activated carbon particles can be brought into the cone of the cyclone separator by upflow formed in the conical barrel after the fan is started, and coarse particles overcome the airflow resistance to fall into the third filter bin; and medium particles can be pre-sorted when passing through the first screen and the second screen, and the sorting efficiency is greatly improved in combination with three mechanisms of gravity settling, pneumatic sorting and mechanical screening.

The application concerns the treatment of fruit and vegetable pomace, a byproduct of juice extraction or pulp production. The application concerns a process enabling the transformation of pomace into a product intended for further food consumption. The process involves optionally diluting the pomace with a working fluid to obtain a suspension, followed by mechanical separation of consumable and non-consumable fractions using hydraulic separation, mechanical screening, or a horizontal centrifuge. The consumable fraction is subjected to flow sterilization using ultrasound. After sterilization, the product can be concentrated and then packaged. This solution enables the production of a microbiologically safe product and the effective management of fruit and vegetable pomace in the food industry.

The invention provides a super-subcritical technology small molecule peptide amino acid water-soluble fertilizer preparation method, which comprises: S1, pretreatment: collecting fresh chicken manure or biogas slurry, and removing feather, sand and other large particle impurities in the fresh chicken manure or biogas slurry through mechanical screening and gravity sedimentation; step S2, supercritical / subcritical water pyrolysis: pumping the slurry obtained in the step S1 into two supercritical / subcritical reaction kettles, sealing the reaction kettles, introducing nitrogen to replace air, and raising the temperature and pressure to reaction conditions; s3, post-treatment: after the reaction is finished, filtering a hydrolysis product through a filtering mechanism, and removing solid residues which are not completely hydrolyzed step by step; then carrying out centrifugal separation, and returning solid residues obtained by centrifugation to the step S2 to continuously participate in hydrolysis; according to the invention, efficient resource utilization of chicken manure or biogas slurry can be realized, and product stability and process continuity are improved.

The invention discloses a method for improving metallurgical coke average particle size detection accuracy, and belongs to the technical field of detection. The method comprises the following steps: step 1, determining the influence of coke moisture; 2, strictly standardizing a detection tool test sieve; step 3, determining a calibration and verification system and rule of the test sieve; step 4; standardizing the sampling method and quantity; 5, standardizing a sample screening process; 6, the detection loss amount is stipulated; and 7, mechanical screening requirements and dispute treatment methods are stipulated. The technical problem of large data difference in the coke average particle size detection process is effectively solved, real and reliable data can be provided for coking industry production and blast furnace stable operation, the metallurgical coke quality is improved through coking production, the coal blending technical structure is optimized, the coal blending cost is reduced, and the coke average particle size detection method is suitable for industrial production. And a basic condition is laid for stable yield and high yield of the blast furnace, so that huge economic benefits and good social benefits are generated.

The present application relates to the technical field of aggregate grading for dry-mixed mortar, and provides an aggregate grading device and a grading method for dry-mixed mortar in construction. The grading device comprises a mechanical screening component and an airflow grading component. The mechanical screening component is configured with a screening chamber, and a screening mesh is arranged in the screening chamber. The mechanical screening component is used for mechanically screening aggregate on the screening mesh. The airflow grading component is connected with the screening chamber, and is used for discharging powder in the screening chamber from the screening chamber. Aggregate is placed on the screening mesh of the screening chamber. Particles smaller than the mesh holes of the screening mesh can pass through the mesh holes, and particles larger than the mesh holes are intercepted on the screening mesh to achieve mechanical screening of the aggregate. Powder is discharged from the screening chamber by the airflow grading component. Thus, the defect that the screening mesh of a conventional mechanical screening machine is easily blocked by wet powder when grading aggregate with a high water content and a high powder content, greatly reducing the yield and quality of the screening operation, is overcome.

This invention discloses a tea harvesting mechanism and machine. The harvesting mechanism includes a harvesting body, which is trumpet-shaped with smooth curved sidewalls. The inner diameter of the cross-section of the harvesting body gradually decreases from the first end to the last end. The trumpet-shaped curved surface enables mechanical screening, guidance, and positioning of tea buds, eliminating the need for precise coordinates of the tea leaves and reducing the requirements for accuracy and real-time performance of the visual perception system. A sensing device is provided on the inner sidewall near the last end of the harvesting body to detect the position of the tea buds entering the harvesting body. A harvesting device is provided on the sidewall near the first end of the harvesting body to receive signals from the sensing device and harvest the tea buds within the harvesting body. The harvesting machine of this invention, with this harvesting mechanism, guides the tea buds to the center of the harvesting mechanism under the guidance and screening effect of the curved surface structure, thus guiding and defining the spatial position of the tea buds, avoiding the precision requirements for spatial positioning found in conventional harvesting mechanisms.

This invention relates to the field of permanent magnet motor fault diagnosis technology, and more particularly to a deep learning-based method for permanent magnet motor fault diagnosis. The method includes: performing field aggregation and channel mapping processing based on rotor surface temperature values ​​and stator coil temperature values ​​to obtain an operating condition dataset; performing bearing vibration frequency processing, bearing speed processing, and audio signal mapping processing based on the operating condition dataset to generate mechanical screening results; further performing fixed-time-window segmentation, time synchronization, fault tag cross-comparison, and comprehensive evaluation processing on the mechanical screening results to generate a comprehensive evaluation result; and finally, generating alarm signals and maintenance suggestions based on the comprehensive evaluation result to obtain a fault diagnosis result. This invention can streamline the recording relationships within a time window, improving the continuity and verifiability of the fault diagnosis result generation process.

The invention discloses welding equipment with a welding slag collecting function. The welding equipment comprises a base, and a welding slag classified collecting assembly is arranged on the base; the two-stage separation process is adopted, and effective stage treatment of the welding slag is achieved, specifically, in the first stage, large-particle welding slag and small-particle welding slag are separated through the arrangement of the filter screen plate; in the second stage, the welding slag with the high metal content and the welding slag with the low metal content are separated through the arrangement of an electromagnetic sweeping rod, the three types of graded welding slag (small particles, low-metal large particles and high-metal large particles) can be efficiently collected in combination with the arrangement of a waste material box and a movable material receiving box, conditions are created for follow-up differentiation treatment, and the working efficiency is improved. And the resource recovery rate can be effectively improved. Through innovative combination of mechanical screening and electromagnetic separation, a complete welding slag grading treatment system is constructed, the problem that in the prior art, the treatment efficiency is low due to mixing and collecting of welding slag is solved, and reliable technical support is provided for greenization and recycling of welding production.

The invention relates to a pedal type sieving mechanism which comprises a supporting frame, a driving assembly, a speed increasing assembly and a sieving assembly, the driving assembly comprises a frame, pedals, a driving chain wheel and a driven chain wheel, the driving chain wheel is arranged on the frame, a ratchet mechanism is arranged in the driving chain wheel, and the pedals are connected with the ratchet mechanism; the driving chain wheel is connected with the driven chain wheel through a chain; the speed increasing assembly comprises a first planetary gear mechanism and a second planetary gear mechanism which are connected in series, the input end of the first planetary gear mechanism is connected with the driven chain wheel, and a flywheel is arranged between the driven chain wheel and the first planetary gear mechanism; the output end of the first planetary gear mechanism is connected with the input end of the second planetary gear mechanism; the screening assembly drives a screen to do reciprocating screening motion through an eccentric hinged type motion conversion mechanism. According to the pedal type pure mechanical screening mechanism, manual transmission decoupling and fatigue reduction are achieved, power fluctuation is stabilized, large-transmission-ratio speed increasing and efficiency improving are achieved, and efficient screening can be achieved without electric driving.

The utility model discloses a peanut seed sorting and grading device according to plumpness, which relates to the technical field of seed sorting and comprises a frame, a secondary screening mechanism, a tertiary screening mechanism and a collecting mechanism, the secondary screening mechanism is arranged on the frame, the collecting mechanism is arranged on the frame, the secondary screening mechanism comprises a secondary mounting frame, and the tertiary screening mechanism comprises a tertiary mounting frame. The inner side of one end of the second-stage mounting frame is fixedly connected with an input end protection plate, the inner side of the other end of the second-stage mounting frame is fixedly connected with an output end protection plate, and the other end of the second-stage mounting frame is fixedly connected with a first motor. The seed screening device has the beneficial effects that through three-stage mechanical screening linkage of the first-stage screening mechanism, the second-stage screening mechanism and the third-stage screening mechanism, impurities and broken particles in seeds are screened firstly, then the seeds are screened according to the size, and then the seeds are selected and graded according to the plumpness through a negative pressure air duct and a centrifugal fan.

The invention discloses a protective crushing-siphoning coupled malus spectabilis pulp and seed separation all-in-one machine, and relates to the technical field of separators, the protective crushing-siphoning coupled malus spectabilis pulp and seed separation all-in-one machine comprises a machine body, crushing rollers, a siphoning separation mechanism and a collecting and filtering mechanism, a collecting box is arranged on one side of the machine body, and the crushing rollers are symmetrically and rotatably arranged in the machine body through a rotating shaft; a driving box for controlling the smashing rollers to rotate is arranged outside the machine body, the siphon separation mechanism is arranged in the machine body, and the collecting and filtering mechanism is arranged in the collecting box. By means of the arrangement mode that the smashing roller and the siphon separation mechanism are matched, separation can be achieved through the siphon separation mechanism by means of flowing of a water source and the characteristics of pulp and seed density, violent extrusion and friction applied to a mixture by traditional mechanical screening are avoided, seeds are naturally layered and transferred only under the action of water flow buoyancy and gravity, and the separation efficiency is improved. And meanwhile, the water flow can also achieve the additional effects of cleaning the seeds and improving the purity of a finished product, so that the device is convenient to use.

The invention discloses a discharging mechanism of a disc type cap sorter. According to the technical scheme, the bottle cap feeding device comprises a bottle cap material channel, a plurality of feeding air nozzles which blow bottle caps to slide along the bottle cap material channel are arranged on the bottle cap material channel, a material returning pipe is arranged below the bottle cap material channel, a notch is formed in the position, above the material returning pipe, of the bottle cap material channel, a tongue piece is arranged at the position of the notch, and when cap openings of the bottle caps face upwards, the feeding air nozzles blow the bottle caps to slide along the bottle cap material channel. The bottle cap normally passes through the bottle cap material channel along the tongue piece, when a cap opening of the bottle cap faces downwards, the bottle cap obliquely falls to the material returning pipe below along the tongue piece, and a plurality of material returning air nozzles are arranged on the material returning pipe. According to the scheme, tongue piece mechanical screening is combined with the boosting air tap to accelerate forward bottle cap sliding, the material returning air tap automatically returns materials, and the output efficiency and continuity are improved.

The invention discloses an energy-saving water circulation type full-automatic vibration screening device and a control system thereof, and belongs to the technical field of mechanical screening, the energy-saving water circulation type full-automatic vibration screening device is characterized in that a cross-shaped vibration screen matched with a screening cylinder and a lifting box in rotary operation are arranged, and a multi-stage screening module integrating space overturning, double-group alternating and screened object lifting circulation is integrated; multiple traditional procedures are integrated into a single machine to be completed, that is, through the rotating action of the cross-shaped vibrating screen, the gravity transfer of screened objects and the external circulation of the screened objects, on one hand, three-level efficient separation and collection of the screened objects are completed under the action of single-layer rotating circulation and water washing and scouring, and on the other hand, three-level efficient separation and collection of the screened objects are achieved; on the other hand, the cross-shaped vibrating screen changes roles (bearing faces / screen faces) in the rotating process, the risk that screen holes are blocked is thoroughly eliminated through reverse washing scouring and overturning vibration dumping, in addition, closed-loop water saving is achieved through coupling with the water circulation technology, and the cross-shaped vibrating screen is particularly suitable for high-water-content scenes such as gravel aggregate grading and mineral washing and selecting; and the advantages in water saving and automation levels are obvious.

The utility model relates to the technical field of pseudo-ginseng processing, in particular to a weighing type pseudo-ginseng multistage sorting device which comprises a circular supporting plate, a servo motor is arranged in the middle of the bottom of the circular supporting plate, and an output shaft of the servo motor penetrates through the bottom of the circular supporting plate and is coaxially connected with a circular rotating plate. A plurality of weighing and sorting assemblies distributed in an annular array are arranged at the position, close to the outer edge, of the top of the circular rotating plate, an annular fixing plate is arranged at the edge of the bottom of the circular supporting plate, a plurality of fixing connecting rods are further evenly distributed on the outer wall of the annular fixing plate, and a material distributing and guiding-out plate is arranged at the end of each fixing connecting rod. According to the weighing type pseudo-ginseng multi-stage sorting device, sorting can be conducted according to the actual weight of pseudo-ginseng through accurate measurement of the electronic weighing device instead of depending on the size or the appearance, so that the problem that the weight cannot be accurately distinguished through traditional mechanical screening is solved, the problem that pseudo-ginseng with the similar weight but different sizes is mistakenly graded is solved, and the sorting efficiency is improved. Therefore, the sorting precision is improved.

According to the ore self-weight grading and cleaning device based on the ore drawing draw shaft structure, on the basis of the special working environment and conditions of underground production, by means of commonly-used ore drawing draw shaft facilities, necessary structural transformation is carried out, the draw shaft type ore gravity grading ore washing structure is constructed, a traditional mechanical screening ore washing mode is replaced, and the ore washing efficiency is improved. And efficient ore grading and cleaning are achieved. According to the method, the purposes of efficient ore grading and ore washing can be achieved, power equipment can be omitted, the risk that operation dust pollutes the environment in a draw shaft self-sealing system is eliminated, great reference significance is achieved for various mines, and important engineering support is provided for underground popularization of a mining, selecting and filling collaborative production operation mode.

The utility model provides a screening and collecting device for a conveying roller shaft of a glass edge grinding machine, which comprises a main body frame, a feeding part, a transfer adjusting part, a storage adjusting part, a collecting and storing part, a movable loading part, a transfer storage part and a control part, the transfer adjusting part comprises a transition mechanism and a screening mechanism, the collecting and storing part comprises a first U-shaped groove plate, a second rolling wheel, a strip-shaped partition plate, a magnet and a T-shaped fixing column, the movable carrying part comprises a second U-shaped groove plate, a U-shaped positioning partition plate, a second electric lifting device, a fourth push rod motor, a layering partition plate and buffer cotton, and the transfer storing part comprises a third U-shaped groove plate and a third rolling wheel. A mechanical transfer roll shaft is adopted, so that the labor intensity is greatly reduced; through mechanical screening, the screening quality is stable and controllable; to-be-screened roll shafts and screened roll shafts are stored in different areas, so that the working environment is optimized, and quick transfer is facilitated; the number of required workers is greatly reduced, and the production cost is saved.

The application provides a method for separating live insects from materials, comprising the following steps: putting a mixture containing live insects to be separated into a separation area with a top closed, a side wall and a bottom provided with mesh holes; creating a low-oxygen environment in the area by deoxygenation, creating a temperature gradient environment by heating, and creating a light intensity gradient environment by lighting; under the multiple environmental stresses, the live insects actively crawl away from the materials, pass through the mesh holes and enter a collection container, and the separation of the insects and the materials is completed; the application solves the problems of insufficient separation purity and easy damage to the insect bodies in the existing mechanical screening method, realizes gentle separation without mechanical contact by using the self-crawling of the insects, significantly improves the insect body integrity and the separation efficiency, and is suitable for large-scale breeding production.

The utility model belongs to the technical field of geological detection, particularly relates to a soil screening device based on geological detection, and provides the following scheme aiming at the problems that the existing traditional soil screening device mostly adopts a manual screening mode or a simple mechanical screening mode, the screening efficiency is low, and the screening effect is not ideal: the soil screening device comprises a U-shaped frame; a fixing frame is arranged at the top end of the U-shaped frame in a sliding mode, a U-shaped plate is arranged on the upper side of the fixing frame, a connecting groove is formed in the U-shaped plate, a filter box is arranged in the connecting groove in a sliding mode, a filter sieve used for screening soil is fixed in the filter box, and a reciprocating assembly used for driving the filter sieve to conduct screening is arranged in the U-shaped frame. The jolting assembly is used in cooperation with the reciprocating assembly, and the jolting assembly is used for driving the filter sieve to jolt in the reciprocating movement process; and by arranging the reciprocating assembly and the jolting assembly, reciprocating movement and jolting screening of the filter sieve are achieved, and the screening efficiency and the screening effect are greatly improved.

The utility model relates to the technical field of mechanical screening, and discloses a mechanical scattering and screening device which comprises a machine body, a scattering seat is fixedly mounted at the upper end of the machine body, a plurality of through holes are formed in the bottom of the scattering seat, and a first screening plate and a second screening plate are symmetrically mounted in the machine body; the mesh number of the first screening plate is different from that of the second screening plate; the multiple through holes are formed in the bottom of the scattering base to preliminarily screen materials, the materials which are not fully scattered can be left in the scattering base to be continuously scattered and stirred, it is ensured that all the materials are fully treated, and therefore the overall scattering and screening effect is improved; according to the multi-stage screening device, multi-stage screening of materials is facilitated, so that the materials with different particle sizes can be conveniently screened for subsequent classification processing, refining and high efficiency of material processing are realized, and the flexibility and applicability of material production are improved.

This invention relates to an iron-modified sludge biochar electrocatalytic tangential flow membrane coating, its preparation method, and its application. The preparation method includes: sequentially subjecting wastewater treatment plant residue sludge to mechanical screening for impurity removal, drying, anaerobic high-temperature pyrolysis, and ball milling to 0.5-2 μm to obtain modified sludge biochar; Fe... 2+ with Fe 3+ A mixture of multivalent iron ions is obtained by dissolving the iron ions in water at a molar ratio of 2-4:1; tannic acid is then added to this mixture to form a chelation system. This invention, through the preparation of a catalytic membrane pack and the continuous replenishment of electrons by an external electric field, enables the iron-modified sludge biochar electrocatalytic tangential flow membrane pack to possess both physical separation and carbon electrocatalytic degradation functions. This fundamentally solves the technical problems of existing ultrafiltration membrane packs, such as single function, severe membrane fouling, and low energy utilization, and overcomes the defects of easy pollutant deposition, achieving synergistic effects of separation and catalysis. It can be widely applied in scenarios such as advanced wastewater treatment.

The invention discloses a disc type cap arranging machine. According to the technical scheme, the automatic bottle cap feeding device comprises a circular material box, a rotating plate is arranged in the middle of the circular material box, a motor capable of driving the rotating plate to rotate is arranged at the bottom of the material box, a discharging opening allowing bottle caps to enter is formed in the side wall of the circular material box, and a bottle cap channel is formed in the position, at the discharging opening, of the outer portion of the circular material box; a plurality of feeding air nozzles for blowing bottle caps to slide along the bottle cap material channel are arranged on the bottle cap material channel, a material returning pipe communicated to the circular material box is arranged below the bottle cap material channel, a notch is formed in the bottle cap material channel and above the material returning pipe, a tongue piece is arranged at the notch, and when cap openings of the bottle caps face upwards, the bottle caps normally pass through the bottle cap material channel along the tongue piece; and when the opening of the bottle cap faces downwards, the bottle cap obliquely falls to the return pipe below along the tongue piece. According to the scheme, tongue piece mechanical screening is combined with the boosting air tap to accelerate forward bottle cap sliding, the material returning air tap automatically returns materials, and the output efficiency and continuity are improved.

The invention discloses a grading method for industrially extracting natural bamboo fibers from solid bamboo wastes, which comprises the following steps of: grading the bamboo wastes into sheets, blocks and scraps through mechanical screening, cleaning, soaking in alkali liquor and heating and softening by microwaves, and respectively carrying out physical and chemical treatment, independent physical treatment or physical and biological treatment according to different forms. Filamentous, fluffy and powdery natural bamboo fibers are obtained. The method is free of steam, low in energy consumption and low in cost, the total proportion of the natural bamboo fibers is larger than or equal to 60%, the method can meet the requirements of multiple industries such as automobile interiors, composite materials and bioplastics, bamboo waste is efficiently utilized, the method is suitable for industrial production, and improvement of the economical efficiency and sustainable development of the bamboo industry is facilitated.

The invention relates to the technical field of agricultural product drying, and discloses drying equipment for agricultural product processing, which comprises a drying box, a feeding hole in the top of the drying box is communicated with a discharging hopper, the discharging hopper is positioned below a discharging hole of a spiral conveyor, the center of the drying box is rotatably connected with a driving shaft, and stirring rods I are uniformly distributed on the circumferential side surface of the driving shaft; the driving shaft is hollow and is connected with the hot air generator through an air pipe, first air holes are formed in the circumferential side wall of the driving shaft, a nested grading screen drum assembly concentric with the driving shaft is arranged in the drying box, and the grading screen drum assembly comprises an inner ring screen drum, a middle ring screen drum and an outer ring screen drum which are sequentially arranged along the side wall of the drying box from the driving shaft; according to the three-dimensional dynamic stirring screen drum, the unique concentric nested screen drum structure, the hot air injection system integrated on the driving shaft and the three-dimensional dynamic stirring network are arranged, and the deep coupling and mutual promotion effect of the drying process, the mechanical screening process and the airflow separation process is achieved.

The utility model relates to the field of impurity removal device, especially millet impurity removal device based on airflow sorting, including bottom plate, the upper end of bottom plate is equipped with support mechanism, installs the first motor for the rotation of support mechanism on support mechanism. The utility model discloses under the rotation of gear and gear ring drive of screening box, carries out dynamic screening to millet through sieve hole and steel wire net, can separate out the larger small stone and other impurities quickly, airflow sorting and mechanical screening combine, utilize the buoyancy of airflow to distinguish the light and heavy impurities further, ensure the efficient separation of millet and impurities, through electric heating rod heating the air in the center cylinder, cooperate with the blower to blow out the hot airflow from the air outlet groove and air outlet hole evenly, dry millet in the sorting process synchronously, reduce its moisture content, high -speed hot airflow can effectively blow off the dust and other light impurities attached to the surface of millet, solved the defect that the traditional mechanical screening cannot utilize airflow to dry and dust removal.