75results about How to "Improve screening accuracy" patented technology

The utility model provides a raw material screening device for terretride production relates to raw material screening technical field, including screening box, the both ends of screening box are all set up and lead material mouth, the both sides of screening box are set up respectively and shake the mouth, import and export, and the inside of screening box is provided with screening mechanism, screening mechanism includes screening box, screening box swing installation is in the inside of screening box. The utility model discloses, through setting up air pump, connecting pipe, gas cavity and gasbag pipe, has constructed adjustable screening hole aperture control system. Air pump transports gas to gas cavity through connecting pipe, drives gasbag pipe to swell or contract in screening hole, realizes accurate, flexible adjustment of screening hole effective aperture, can adapt to different batches, different process stage's raw material granularity demand of terretride, solves the problem that traditional device filter hole fixedly is not adjustable, needs frequently to replace screen, promotes equipment versatility and screening precision, guarantees that raw material granularity meets the specific standard of tablet compression.

The utility model discloses color steel plate powder coating screening equipment, and particularly relates to the technical field of metal powder coating production, which comprises a shell, a feed hopper fixedly connected to the top of the shell, a partition plate I and a partition plate II fixedly connected to the inner side of the shell, a concentration hopper fixedly connected to the inner sides of the partition plate I and the partition plate II, and a discharge hopper fixedly connected to the bottom of the shell. An outer frame is fixedly connected to the bottom of the shell, and a collecting frame is slidably connected to the inner side of the outer frame. The connecting rod, the first telescopic rod, the second telescopic rod and the fixing base are matched in a rotating supporting mode, the vibrating motor, the second positioning rod and the second spring are combined to enable the screen plate to conduct horizontal and vertical two-way composite vibration, and the vibration frequency and the screening efficiency are improved; the feeding amount is adjusted and controlled through the rotating plate, coating powder is stirred through reciprocating swing of the fixing plate and the toothed bar, the coating powder is evenly distributed on the surface of the screen plate, the initial contact area of the powder and the screen is increased, the screening speed is kept, and the stability of good screening precision is kept.

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

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

The utility model discloses a kind of silica mortar production sieve powder equipment, comprising: main component, the main component includes outer cylinder, centrifugal cylinder and filter hole;The outer cylinder inside movablely connects centrifugal cylinder, the filter hole is opened in centrifugal cylinder side wall;Scattering component, the scattering component includes trapezoidal receiving seat and semicircular scattering piece, trapezoidal receiving seat is fixedly installed in centrifugal cylinder inner wall, trapezoidal receiving seat front end movablely connects semicircular scattering piece, the scattering component still includes receiving groove, through-hole, cylindrical rod and limit piece.The utility model semicircular scattering piece is subjected to external force under the cooperation of cylindrical rod and through-hole, can realize rotation, and then can drive silica mortar material in rolling process constantly change motion trajectory, so that silica mortar material is scattered, and then can effectively avoid the phenomenon of blockage.

The utility model discloses a kind of pretreatment devices of camellia seed, relate to agricultural product processing machinery field.The utility model includes sheller, dust collector is installed on the sheller, dust collector is connected with negative pressure fan by dust suction pipe, negative pressure fan generates negative pressure airflow, the dust and chippings generated in the shelling process of camellia seed are sucked into dust suction pipe, are collected and handled by negative pressure fan, sheller side is equipped with water pump, water pump outlet end is connected with water jet pipe, the spout of water jet pipe is towards its below receiving plate area, sprays atomized water bead, adsorbs escaping dust, falls to receiving plate surface, forms dust removal system, first, the device can efficiently collect the dust and chippings generated in the shelling process by the synergistic effect of sheller and dust collector, negative pressure fan, significantly reduce the pollution of production environment, atomization dust removal system further adsorbs escaping dust, forms double dust removal mechanism, substantially improves cleaning effect.

The utility model relates to the technical field of oil fracturing sand processing, disclose a kind of efficient sorting equipment for oil fracturing sand, including shell, the shell left end is fixedly connected with multiple motor one, the motor one drive end is all fixedly connected with protruding roller, the shell inner wall left side is slidably connected with multiple sliding blocks, the sliding block inner wall is connected with screen cloth by buckle assembly, to be used for the disassembly of screen cloth, the shell top is fixedly connected with processing cylinder, the processing cylinder top is fixedly connected with motor two, the motor two drive end is provided with processing assembly, to be used for to crack sand and scatter drying. In the utility model, by rotating knob and pulling card bar, screen cloth can be removed from the equipment, single-person rapid operation can be realized, downtime is greatly shortened, maintenance cost is reduced, screen stability is ensured to improve screening accuracy, and multi-specification screen switching can also be quickly completed, which is suitable for efficient production and flexible demand of oil field.

The utility model provides a kind of multi-layer screening structure of building gravel screening machine, comprising: underframe assembly, frame body assembly and screening assembly, the upper surface of underframe assembly is equipped with the frame body assembly for screening assembly, underframe assembly includes underframe body and buffer, the upper surface of underframe body is equipped with buffer, frame body assembly includes vibrating element, mounting and shelf plate, screening assembly includes the screening plate for screening, multiple screening plates are installed between shelf plate by mounting, compared with prior art, the utility model has the beneficial effects as follows: by setting screening assembly, when using, by multiple screening plates between shelf plate using mounting, when using, can carry out step-by-step, fine layered screening to building gravel, can separate multiple different particle size gravel at a time, greatly improve the efficiency of screening operation.

This application relates to a screening device for pill production, belonging to the field of pill production technology. It includes a screening box with a conveying pipe at the top. Inside the screening box, two screen mechanisms are arranged sequentially from top to bottom. The mesh size of the upper screen mechanism is larger than that of the lower screen mechanism. A collection box is located below the lower screen mechanism. Rotating pins are provided on the bottom walls of both screen mechanisms, which are rotatably connected to the inner wall of the screening box via these pins. A cam mechanism is provided on both sides of each rotating pin, driving the screen mechanism to rotate relative to the screening box. This application achieves multi-stage screening of pills, improving the screening efficiency.

The embodiment of the application relates to the battery technical field, and discloses a battery pack equalization method, device and electronic equipment, the method comprises the following steps: obtaining cloud equalization identification information sent by a network device; wherein the cloud equalization identification information is generated by the network device based on historical charging data and / or historical discharging data of a target battery pack, and is identification information indicating whether each single battery in the target battery pack needs equalization; generating local equalization identification information based on current state parameters of the target battery pack; the local equalization identification information is used for indicating whether each single battery in the target battery pack needs equalization; based on the cloud equalization identification information and the local equalization identification information, determining a target single battery needing equalization in the target battery pack, and equalizing the target single battery.

The invention discloses a screening device for potassium ore crushing in potassium chloride production, the device is composed of a first-stage crushing unit, a screening unit, a second-stage crushing unit and a material conveying unit which are connected in sequence, the first-stage crushing unit is provided with a single-roller crusher with wear-resistant insections to complete preliminary crushing, and the screening unit is provided with a advection screen driven by double speed reducers; according to the second-stage crushing unit, the vibration frequency and amplitude can be adjusted in a stepless mode, a screen is of a detachable and replaceable abrasion-resistant metal structure, precise screening is achieved, and the second-stage crushing unit is matched with a double-tooth-roller type crusher through a quantitative feeding bin to conduct secondary refining on large-particle potassium ore. And the material conveying unit adopts an anti-skid, wear-resistant and speed-adjustable conveying belt, so that material transfer and large particle backflow crushing are realized. According to the device, through multi-stage crushing and precise screening of potassium ore, material accumulation and blockage are avoided, the crushing and screening qualified rate and production efficiency are improved, equipment operation is stable, maintenance is convenient, and the potassium chloride product processing quality and production benefits are effectively improved.

The utility model relates to a technical field of medicine processing, especially a high -speed pill sorting machine with grading collection, including support, mounting cover, feed frame, motor and sieve cylinder, support top middle fixed with mounting cover, and the top middle of mounting cover is opened to have processing window, and the bottom middle of mounting cover is opened to have a first discharge gate, and the front and rear parts of mounting cover are opened to have feed inlet and second discharge gate respectively, and the feed inlet of mounting cover front part is connected with feed frame, and the motor is installed in the upper side of support front part, and the motor output shaft rotates and passes through feed frame and is connected to mounting cover inside, and the inside rotation of mounting cylinder is connected with sieve cylinder, the utility model discloses that the dynamic cooperation of mesh bar welding sieve cylinder and lifting plate realizes medicine pill continuous tumbling screening, and the first discharge gate collects standard medicine pills, and the second discharge gate separates non -standard medicine pills, and forms two -way grading output channel.

This utility model provides an automated vibratory screening device for quartz sand, relating to the field of quartz sand screening technology. It includes a mounting frame with a mounting ring welded to the bottom inner side of the top of the mounting frame. A splicing screening assembly is provided on the upper side of the mounting ring frame. The splicing screening assembly includes a support ring frame mounted on the top of a support ring frame, a splicing frame above the support ring frame, and a splicing top frame above the splicing frame. A vibration connecting block is welded to the upper inner wall of the splicing top frame. By setting up an electrically controlled lifting rod, a connecting top plate, a servo motor, and a vibrating pressure plate, the servo motor drives the vibrating pressure plate to reciprocate. The vibrating pressure plate corresponds one-to-one with the vibrating connecting block, causing the entire splicing screening assembly to vibrate, thereby achieving effective screening of quartz sand. Simultaneously, the bottom support spring reduces the outward transmission of vibration, preventing significant shaking of the entire device and reducing overall vibration and noise generation.

The utility model relates to the technical field of phosphor copper ball processing, in particular to phosphor copper ball screening equipment which comprises a screening cylinder, a plurality of discharging plates arranged at the bottom of the screening cylinder and supporting legs arranged at the bottoms of the discharging plates and further comprises a material placing mechanism arranged in the screening cylinder and a feeding mechanism arranged on the side wall of the screening cylinder. Multiple sets of screening holes are formed in the bottom of the screening cylinder, the hole diameters of the multiple sets of screening holes are sequentially increased in the circumferential direction of the screening cylinder, and the multiple discharging plates are all in a U shape and are arranged at the bottoms of the multiple sets of screening holes correspondingly. An ultrasonic sensor, an electric push rod and a baffle are arranged. When the ultrasonic sensor senses that the number of the phosphor copper balls in the screening cylinder is smaller than a certain threshold value, the PLC controls the output shaft of the electric push rod to retract, the baffle is driven to move upwards, and the phosphor copper balls can enter the screening cylinder; when the number of the phosphor copper balls is larger than a threshold value, the output shaft of the electric push rod extends out, the baffle moves downwards to block the feeding plate, excessive phosphor copper balls are prevented from entering, stability and high efficiency in the screening process are guaranteed, and the screening efficiency and quality are improved.

The utility model relates to the technical field of mineral processing, and discloses a quartz sand sorting machine which comprises a box body, one side of the box body is rotationally connected with a box door through a hinge, a feeding port is formed in the top of the box body, a discharging port is formed in the other side of the box body, a discharging plate is installed in the discharging port, and a discharging opening is formed in the discharging plate. One end of the discharging plate is fixed to the interior of the box body. According to the quartz sand sorting machine, a push plate is pushed to drive a push rod to extrude the two ends of an elastic clamping block, meanwhile, a pull rod is pulled to drive a lower protruding block to move, the inclined face of the lower protruding block can drive an upper protruding block to move, the upper protruding block drives the elastic clamping block to leave the interior of a T-shaped groove, and therefore fixing between a fixing frame and a second screening plate is relieved; through the arrangement, the sieve plates with different pore diameters can be replaced, the sorting particle size range can be rapidly adjusted, the production requirements of quartz sand with different specifications can be met, the screening precision and efficiency are improved, and the equipment applicability is improved.

The utility model discloses an adjustable vibration classifying screen for rice processing, which relates to the technical field of grain processing and comprises a support, a screening box is rotatably connected onto the support, a feed port and a discharge port are respectively arranged on two sides of the screening box, two screening plates are fixedly mounted in the screening box, and the feed port is communicated with the discharge port. A collecting box is placed at the bottom end of the support, and an adjusting assembly capable of adjusting the diameter of screen holes is assembled on the screening plate. By assembling the adjusting assembly capable of adjusting the diameter of the screen holes on the screening plate, the limitation caused by fixation of the screen holes of an existing grading screen is effectively solved, firstly, the size of the screen holes can be flexibly adjusted according to the size of rice so that the size of the screen holes can be matched with the height of eight-treasure rice in the Guangdong county, and the eight-treasure rice can smoothly pass through by increasing the diameter of the screen holes; by reducing the diameter of the sieve pores, the eight-treasure rice and impurities can be accurately separated, and the screening precision is remarkably improved.

The utility model discloses a kind of crop seed sorting specific gravity screening devices, it is related to crop seed processing equipment technical field, including screening box, the front side of the outer wall of screening box is fixedly provided with PLC controller, and the upper end of screening box is provided with feed inlet, the inside of screening box is provided with filter structure, the filter structure includes fixedly installed screening filter cylinder in the inside of screening box, four stirring plates are rotationally attached to the inner wall of screening filter cylinder, and the outer wall of four stirring plates is fixedly installed on mounting disc, stirring rod is fixedly installed in the middle of mounting disc, guide plate is fixedly arranged in the bottom of screening box, the front side of guide plate one end is located in screening box and is provided with screening structure, the screening structure includes screening box, the front side of screening box is provided with screening box, can realize the impurity and other pollutants of seed seed adulteration and carry out filtering in carrying out sufficient specific gravity sorting, improve seed specific gravity sorting precision.

This utility model belongs to the field of grain screening technology, specifically relating to a drum-type grain screening device, including a box body. A gasket is provided on the upper inner wall of the box body, and a drum screen is provided on one side of the gasket. An installation plate is provided on the outer side of the box body, and a motor is mounted on the installation plate. A stirring shaft is connected to the motor output shaft, and stirring blades are provided on the stirring shaft, located inside the drum screen. An air guide pipe is provided on the lower side of the drum screen, and multiple air nozzles are evenly distributed on the air guide pipe. A first scraper is provided on one side of the drum screen, and a second scraper is provided on the other side. A discharge port is provided on the lower side of the box body, and a slag discharge port is provided on one side of the box body. This utility model uses a first scraper to remove large impurities from the outer surface of the screen, a second scraper to remove impurities entangled inside the screen, and air nozzles to blow away dust, achieving dual impurity removal through "mechanical scraping + airflow blowing".

A modification device for producing modified silica powder comprises a semi-finished product bin (1), a first spiral reamer (2), a high-speed mixer (3), a medicament barrel (4), a cooling cylinder (5), an ultrasonic vibration screening machine (6), a Roots blower (7), a cloth bag collector (8), a second spiral reamer (9), a packaging machine (10), a medicament sprayer (11), a stirring paddle (12), a base (13), an ultrasonic generator (14), a transducer (15), a motor (16) and a screen (17). According to the device, the ultrasonic vibration screening machine is arranged, ultrasonic vibration is adopted, the screening efficiency is high, net blocking is avoided, and the screening precision is high; the ultrafine modified silica powder is less in agglomeration and good in dispersing performance.

The invention provides a remaining oil utilization condition optimization method based on a GNN-GAN-DNN fusion algorithm, and belongs to the technical field of crossing of oil and gas field development engineering and machine learning, and the method comprises the steps: collecting reservoir data, carrying out preprocessing fusion to construct a sample set, judging the remaining oil utilization potential through GNN, carrying out CAD modeling, carrying out COMSOL numerical simulation, training GAN through simulated data to generate virtual data, and carrying out optimization on the remaining oil utilization condition. And the DNN preferentially selects candidate conditions, and finally, the candidate conditions are verified by using COMSOL. According to the remaining oil utilization condition optimization method based on the GNN-GAN-DNN fusion algorithm, the technical problems that in existing remaining oil utilization condition screening, the physical experiment cost is high, the numerical simulation efficiency is low, data samples are scarce, the optimal solution coverage is incomplete, and the screening result reliability is insufficient are solved.

The utility model discloses a kind of electric power cable protection pipe raw material automatic feeding devices, including installation box, rotatingly installed with rotary table in the installation box, fixedly embedded with screening frame on the rotary table, the rotary table is sleeved with second gear ring, rotatingly installed with driving wheel in the installation box, fixedly installed with discharge pipe in the installation box, the screening frame is rotatably connected with discharge pipe, rotatingly installed with mounting ring in the discharge pipe, discharge pipe is equipped with multiple groups of ring distribution flap, rotating is driven by rotary table screening frame, realize the dynamic screening of raw material, effectively separate the particle and impurity meeting production requirement, metal impurity or agglomerate after screening remains in screen frame, periodically open motor drive a group of mounting shaft in discharge pipe, rotate, under the action of first gear ring and multiple first gear, multiple flap are synchronously opened, metal impurity and agglomerate accumulated in screening frame fall into discharge pipe and are automatically discharged.

The utility model relates to the field of salt production, especially a circular vibrating screen device for salt production. The traditional salt vibrating screen is prone to salt material accumulation or deviation in a single direction, resulting in screen clogging and low screening efficiency. The circular vibrating screen device for salt production comprises a mounting frame and other components. The mounting frame is provided with a collection frame, and four swing springs are fixedly connected to the mounting frame. The swing springs are fixedly connected to a screen frame. The servo motor drives the screen frame to periodically vibrate the coarse screen and the fine screen, which can break up salt lumps, ensure uniform dispersion of salt particles, and make the salt material continuously tumble and jump during the screening process to avoid salt material accumulation and clogging of the screen holes. The device can also perform multi-stage screening of salt particles to improve screening accuracy and ensure the purity of the finished product.

The invention provides a cell sorting method and system of a decommissioned battery, electronic equipment and a storage medium, and relates to the technical field of battery echelon utilization, the method comprises the following steps: respectively carrying out capacity increment test, charge state test and internal resistance test on a target decommissioned battery to obtain a capacity increment curve, a charge state value and an internal resistance value of each cell; calculating a comprehensive discriminant value of each battery cell according to the target characteristic parameter of the capacity increment curve, and removing the battery cells of which the comprehensive discriminant values are greater than a preset discriminant threshold value to obtain a target battery cell; and according to the charge state value and the internal resistance value of the target battery cell, carrying out battery cell category division to obtain a battery cell sorting result. The battery health degree is quantified through the capacity increment curve, the aged and abnormal battery cells are removed, and the screening precision is improved. And the consistency of the battery cells is comprehensively evaluated by combining the grouped charge state test and the internal resistance test, and the retired battery cells in different aging states are effectively identified.

The utility model relates to the field of fertilizer production and processing, in particular to slow-release fertilizer particle accurate partition screening equipment which comprises a base, a bearing column is fixed on the upper side portion of the base, a funnel is connected to the upper side portion of the bearing column, a first guide rod is arranged on the bottom face of the upper portion of the bearing column, and a first spring is arranged outside the first guide rod in a surrounding mode. A first screening frame is slidably connected to the lower portion of the first guide rod, a discharging opening of the funnel corresponds to the upper portion of the first screening frame, supporting guide rods are arranged on the two sides of the first screening frame, and second springs are arranged on the lower portions of the two supporting guide rods. The double-layer screening design of the first screening frame and the second screening frame is adopted, the screens with different hole diameters are arranged, slow-release fertilizer particles with different sizes can be screened out more accurately, the motor drives the disc to rotate, the inclined block periodically impacts the contact block, the first screening frame vibrates up and down, and therefore the slow-release fertilizer particles can be screened out more accurately. Therefore, the process that the particles pass through the aperture of the screen is accelerated, the screening efficiency is improved, and the particle distribution uniformity is guaranteed.

The application discloses a screening device for concrete production and belongs to the technical field of concrete production equipment. The screening device comprises a screening box, a transmission assembly, a main vibration assembly and an auxiliary vibration assembly. The front end of the screening box is provided with a rectangular hole. A main sieve plate is hingedly connected in the screening box. The front end of the main sieve plate penetrates through the rectangular hole and extends out of the screening box. A main assembly plate is fixedly connected in the screening box. A plurality of main springs are fixedly connected to the main assembly plate. The other ends of the main springs are connected with the main sieve plate. The main vibration assembly is located below the main sieve plate. The screening device for concrete production realizes secondary screening of large-diameter raw materials through twice screening of the main sieve plate and the auxiliary sieve plate, effectively reduces the direct discharge of small-diameter particles entrained in the large-diameter raw materials, solves the problem that the screening precision of the existing screening device is reduced due to the inconvenience of secondary screening, and improves the screening precision of the concrete raw materials.

The utility model discloses an alloy steel shot granulating device, which relates to the technical field of granulating machines, and comprises a granulating machine and a screening mechanism at the upper end of the granulating machine, the screening mechanism comprises a separation assembly, a box body arranged on one side of the granulating machine and vertically slidably mounted on one side of the granulating machine, an upper grating and a guide rod fixed on the inner wall of the box body, and a lower grating fixed on the inner wall of the box body, a guide plate is transversely installed on the guide rod in a sliding mode, a lower grating is fixed to the upper end of the guide plate, gaps between the lower grating and the upper grating are arranged at intervals in a staggered mode, an inclined groove is formed in the lower end of the guide plate, and a transverse block is installed in the inclined groove in a sliding mode; the adjusting assembly is arranged at the front end of the box body and used for pushing the transverse block to move along the track of the inclined groove in the guide plate; and the screening component is arranged on one side of the granulator and is used for driving the box body to move up and down. The problems that most screening mechanisms of existing alloy steel shot granulation devices are difficult to directly adjust the screening particle size according to needs, related personnel need to replace screening tools during specific application, and time and labor are wasted are solved.

The invention belongs to the technical field of cement production, particularly relates to a fluctuating roller type feeding machine, and aims to solve the problem that an existing fluctuating roller type feeding machine cannot simultaneously guarantee the screening requirement of a feeding end and the conveying requirement of a discharging end. The device comprises a conveying mechanism, and the conveying mechanism comprises a plurality of fluctuation rollers arranged in the conveying direction; the maximum excircle diameter of the fluctuation roller is gradually reduced from the feeding end to the discharging end; the rotating speeds of the fluctuation rollers are the same. The fluctuating roller at the feeding end of the fluctuating roller type feeder is large in diameter, high in linear speed and strong in fluctuating effect, materials can be quickly pushed to roll and screen, layering of the materials with different particle sizes is efficiently achieved, and the feeding and screening requirements are met; the fluctuation roller at the discharging end is small in diameter, low in linear speed and weak in fluctuation effect, disordered disturbance caused by too high movement speed and violent fluctuation of materials can be avoided, and then the stable conveying flow direction of the materials is prevented from being damaged, so that smooth discharging can be guaranteed, meanwhile, secondary mixing of fine materials is reduced, and the screening precision is improved.

This invention discloses a method for efficient soluble expression of classical swine fever virus (CSFV) E2 protein and a method for preparing highly active monoclonal antibodies, belonging to the fields of animal disease detection and bioengineering technology. This invention, through precise optimization of dual sequences, targeted modification of molecular chaperone vectors, synergistic dual molecular chaperone combinations, temporal induction processes, and a dual screening system, balances antigen activity and translation efficiency, improves induction response and expression efficiency, and precisely matches the folding sequence to obtain E2 protein with a soluble content of approximately 86% and a purity ≥95%. The 3B7 monoclonal antibody prepared using this protein as an immunogen showed the best performance, with an ascites titer of 1:96000, and neutralizing titers of 1:5120 and 1:4096 against CSFV Shimen strain and prevalent subtypes, respectively. The titer decreased by only 4.2% after 3 months of refrigeration at 4°C, and it specifically recognizes CSFV types 1 and 2 without cross-reactivity with BVDV / BDV. This invention solves the pain points of existing technologies, has low industrialization costs, and provides important technical support for the precise prevention and control of classical swine fever.

The invention provides a combine harvester which can improve the screening precision of a screening part on threshed materials. This combine harvester is provided with: a threshing unit for threshing crops; a swing screening device (43) that screens the threshed material that has been threshed by the threshing unit; and a winnower (47) that conveys screening air to the oscillating screening device (43), the oscillating screening device (43) having a grain screen (130) that screens the threshed material, and the grain screen (130) being provided so as to be capable of rotating so that the downwind side of the screening air moves up and down with the downwind side of the screening air as a fulcrum part (138).

The application relates to a hip joint ultrasound standard surface screening and measuring method and device based on key point detection and time sequence consistency, and the method comprises the following steps: acquiring a hip joint ultrasound image sequence; detecting a plurality of anatomical key points in the ultrasound image, outputting a multi-channel response heat map, and obtaining anatomical key point coordinates; constructing a comprehensive consistency scoring function based on the anatomical key points and the time sequence change of adjacent frames of the hip joint ultrasound image, and calculating a consistency score; when the consistency score exceeds a preset threshold, the corresponding frame is determined as a candidate standard section frame; the development state of the candidate standard section frame is reviewed and distinguished to obtain a development state classification result; the alpha angle and the beta angle are calculated, the angle line and the key points are superimposed and displayed on an original drawing, a visual result is generated, and a structured report containing the visual result, the anatomical key point coordinates, the angle parameters and the development state classification result is output. Compared with the prior art, the application significantly improves the automation degree and the result interpretability while maintaining high-precision measurement.