26results about How to "Meet screening needs" patented technology

The invention discloses graded screening equipment for metal powder processing, and relates to the technical field of screening equipment, the graded screening equipment comprises a screening box, and the screening box is sequentially provided with a graded screening mechanism, an intermittent feeding mechanism, a material processing mechanism and a material collecting mechanism; the grading screening mechanism comprises three vibrating screening assemblies arranged in the screening box and distributed at equal intervals and a variable speed driving assembly arranged outside the screening box, and the material processing mechanism comprises a dust processing assembly, a metal powder drying assembly and a control assembly. The grading screening mechanism is arranged, the sizes of screen holes of three screens are sequentially decreased from top to bottom, metal powder entering the screening box can be subjected to grading screening treatment conveniently, and therefore the metal powder obtained after grinding can be separated in order according to the particle size, metal powder of various different particle sizes can be screened out conveniently, and the screening effect is improved; and through the vibration screening effect, the situation that the screen is blocked can be effectively reduced, and the screening efficiency can be improved.

The utility model discloses a vibrating screen which comprises a vibrating screen body, a flat plate is arranged below the vibrating screen body, two first vertical blocks are fixedly installed on the top of the flat plate, a first rotating shaft is rotatably connected between the two first vertical blocks, and a connecting block is fixedly installed on the outer side wall of the first rotating shaft. The connecting block is fixedly installed at the bottom of the vibrating screen body, a first adjusting assembly is arranged on the flat plate, a hollow base is arranged below the flat plate, a second adjusting assembly is arranged on the hollow base, and the first adjusting assembly comprises two second vertical blocks fixedly installed on the flat plate. Through the arrangement of the first adjusting assembly and the second adjusting assembly, the inclination angle of the vibrating screen body can be adjusted, the screening requirements of different objects are met, operation is easy and convenient, meanwhile, the height of the vibrating screen body can be adjusted, use requirements under different conditions are met, and use is convenient.

The utility model discloses screening equipment for biomass particle processing, which belongs to the technical field of particle screening, and adopts the technical scheme that the screening equipment comprises a support frame, a screen is arranged in the support frame in a sliding manner, a self-cleaning component is arranged at the bottom of the screen, an angle adjusting component is arranged at the bottom of the support frame, and the self-cleaning component is arranged in the support frame. The angle adjusting assembly comprises four pin shafts, the pin shafts are connected to the front side and the rear side of the two sides of the supporting frame in a bolted mode, the surfaces of the pin shafts are sleeved with rotating rings, the bottoms of the rotating rings are connected with mounting bases in a bolted mode, and the bottoms of the two mounting bases on the front side are connected with telescopic electric cylinders in a bolted mode. The problems that the screening quality is affected due to the fact that the angle of a screen mesh cannot be freely and accurately adjusted according to different screening requirements, the discharging speed and the screening duration of the screen mesh cannot be controlled, and the screen mesh can adapt to different screening scenes and can conduct effective screening are solved.

The utility model discloses a screening device for product granularity in titanium sponge crushing production, which comprises a base, a screening shell, a motor and a drum screen, the drum screen with adjustable screen hole size is arranged in the screening shell, and the motor drives the drum screen to rotate; particularly, an adjusting mechanism is arranged at one end of the screening shell, adjustment of the relative position between a shielding plate and a screening plate on the rotary screen is achieved through cooperation of a tooth block, a tooth sleeve, a push ring and other components, and therefore the size of screening holes is changed, and the screening requirements of different particle sizes are met. Meanwhile, impurities and particles which do not meet the particle size requirement are effectively collected through the design of the slag discharging groove; the vibrating screen is compact in structure and convenient to operate, improves screening efficiency and product purity, and has wide application prospects and remarkable economic benefits.

The utility model discloses a kind of vegetable processing screening equipment, the utility model relates to vegetable processing technical field;Including: feed hopper, support structure, the top of the support structure is fixedly connected with screening structure, the screening structure includes support plate, the bottom of the support plate is fixedly connected with the top of support structure, the top of the support plate is fixedly connected with driving motor, the output shaft both sides of the driving motor are fixedly connected with cam, the outer wall of the cam is rotatably connected with screening rod, the end of the screening rod away from cam is fixedly connected with filter structure, the bottom of the filter structure is fixedly connected with eight elastic sheets symmetrically, rotate by driving motor cam, make filter structure produce stable and efficient vibration.This vibration design can effectively avoid vegetables to accumulate on screen plate, let vegetables be fully dispersed, ensure that smaller impurities and unqualified vegetable pieces can smoothly pass through sieve hole.

The utility model belongs to the technical field of straightening granulators, and particularly relates to a straightening granulator screen adjusting frame which comprises a base, a supporting frame arranged at the top of the base, a motor arranged on one side of the top end in the supporting frame, a driving gear arranged on an output shaft of the motor, a driven gear meshed with the outer edge of the driving gear, a connecting shaft arranged at the bottom of the driven gear, and a rotating disc arranged at the bottom end of the connecting shaft. The top of the turntable is provided with an adjusting hole, and the turntable is provided with a charging barrel at the top of the adjusting hole. Through the mutual cooperation of the inner screen, the sliding groove, the outer screen, the screw rod and the adjusting knob, an operator can accurately control the aperture size under the condition that the screens are not replaced, the screening requirements of materials with different particle sizes are met, and through the mutual cooperation of the motor, the driving gear, the driven gear, the rotating disc, the adjusting hole and the discharging opening, when the granulator is used for feeding materials, the screening efficiency is improved. The feeding amount can be timely and conveniently adjusted, and the problem of material accumulation or insufficient feeding in the production process of the device is avoided.

The invention relates to the technical field of compound fertilizer processing, in particular to a high tower granulation compound fertilizer screening device which comprises a screening barrel, a material control unit and a screening mechanism. According to the compound fertilizer screening device, after compound fertilizer falls into the screening mechanism, the compound fertilizer makes contact with the three screening plates in sequence from top to bottom, the three screening plates with the screening holes of different hole diameters screen the compound fertilizer in sequence through operation of the vibration set, and compound fertilizer particles of different sizes are separated; and the compound fertilizers with different particle sizes fall out through different discharging pipelines, the operation process of screening and separate placement of the compound fertilizers with various sizes is completed, the screening requirement is met, the screening effect is improved, an inclined strip corresponding to each screening plate drives a cleaning strip on the inclined strip to intermittently clean the corresponding screening plate, and the screening efficiency is improved. In conclusion, multiple times of screening operation of different hole diameters and intermittent cleaning of different screening plates are achieved, and blocking is prevented.

This invention discloses a screening device for the production of granular zinc stearate, comprising two screening mechanisms connected by a drive mechanism. The inner walls of the top of each screening mechanism are connected to a three-way conveying pipe, which includes one inlet and two outlets. Each outlet is equipped with a solenoid valve. A support cover is connected to one outer wall of each screening mechanism. Each screening mechanism includes a screening box with a square hole penetrating it. One end of each square hole is tightly connected to a blower, with the blower's output facing into the screening box. The other end of each square hole is tightly connected to a valve, and a large particle collection box and a small particle collection box are sequentially arranged on one side of the valve. This screening device for the production of granular zinc stearate effectively improves screening efficiency while meeting the screening requirements for granular zinc stearate, making it more suitable for large-scale screening.

The present invention relates to a fluorescence polarization immunoassay method for determining antibody concentration, the method comprising the following steps: 1). preparing an antibody binding protein with a fluorescent group as an antibody fluorescent tracking molecule; 2). mixing the fluorescent tracking molecule with a sample solution to be tested and incubating the mixture; 3). after the incubation is completed, using an enzyme marker with a fluorescence polarization detection function to detect the light intensity in the horizontal and vertical directions of the incubated solution, which are recorded as I and I respectively. ∥ and I ⊥ ; 4). The relationship between antibody concentration and fluorescence polarization intensity is obtained from the known standard concentration and fluorescence polarization intensity value, and the fluorescence polarization intensity value measured by the sample solution to be tested is substituted into the relationship to obtain the antibody concentration in the sample solution to be tested. The method disclosed in the present invention has the outstanding characteristics of simple and rapid operation, high sample throughput, and cost saving, and is more suitable for the screening of high-yield stable cell lines than the currently commonly used antibody detection method.

The application discloses a sleep apnea severity prediction method based on a single-channel blood oxygen signal and belongs to the technical field of medical artificial intelligence. The prediction method comprises the following steps: acquiring a single-channel blood oxygen saturation signal and demographic characteristics of a target object; performing preprocessing and signal feature extraction operations on the single-channel blood oxygen saturation signal to obtain a signal feature set of the target object; inputting the feature set of the target object into a trained double-branch joint sleep apnea severity prediction model based on multi-scale width learning; outputting a preliminary apnea hypopnea index estimation value through a regression branch; outputting an interval probability distribution through a classification branch; fusing features through a joint regression unit to obtain a final prediction value and a severity classification. The application can realize accurate prediction of sleep apnea severity based on a single-channel blood oxygen signal, has the advantages of low model complexity, strong interpretability and efficient operation on a CPU, and is suitable for clinical portable screening scenes.

The invention belongs to the technical field of autism screening, and discloses a rapid interactive screening test method for infant autism, which is suitable for Chinese environment infants of 18-36 months old. The method comprises the following steps: determining an adaptive test object, preparing a test, executing an interactive test and scoring according to a sequence that the first three items are fixed and the other items are flexible, adding scores of the nine items, and judging the risk according to the total score. The method can be completed within 5-10 minutes and is adaptive to Chinese culture, equipment is simple, operation is standardized, and the problems that an existing tool is poor in adaptation and low in efficiency are solved; the method is high in accuracy, is suitable for multiple scenes such as communities, can quickly recognize autism risks, and provides support for early intervention of child autism.

The utility model discloses a phenolic resin particle screening device which comprises a rack, an idler wheel is rotationally installed on the top of the rack, a screen frame is connected to the upper portion of the idler wheel in a rolling mode, and a screen is movably clamped in the screen frame and used for screening phenolic resin particles. A first movement driving mechanism is installed on the rack and used for pulling the screen frame to move back and forth on the idler wheels. A support is arranged on the top of the screen frame, and a plurality of stirring plates and stirring assemblies are installed on the support and used for stirring phenolic resin particles. The phenolic resin particle screening device relates to the technical field of screening devices, and solves the problems that an existing screening device adds too many materials at a time, phenolic resin is prone to being accumulated on a screen to cause blockage, and the screening efficiency is high. And the phenolic resin cannot be quickly dispersed and fall off only through vibration, so that the screening efficiency and the screening precision are influenced.

The chemical fertilizer particle screening device comprises a screening groove, the top end and one end of the screening groove are open, supporting assemblies are installed at the four corners of the bottom of the screening groove, inner supporting plates are fixed to the two sides of the inner side wall of the screening groove, and screening assemblies are arranged on the upper surfaces of the two inner supporting plates in an attached mode. And a plurality of inclined guide plates are fixed to the two sides of the inner side wall of the screening groove and located above the screening assembly. According to the chemical fertilizer particle screening device, the screening groove, the supporting assembly, the inner supporting plate, the screening assembly, the multiple material guiding plates, the dust removal cylinder and the hopper are arranged, chemical fertilizer particles fall into the screening groove from the hopper and the dust removal cylinder and are located on the surface of the screening assembly, and screening of the chemical fertilizer particles is achieved; and the material guide plate can increase the moving distance of the chemical fertilizer particles, so that the chemical fertilizer particles stay on the surface of the screening assembly for a longer time, and the screening effect is improved.

The application discloses a method for constructing a cirrhosis dilution hyponatremia rat model and application thereof. Based on the constructed cirrhosis pathological model, combined with continuous infusion of DDAVP (desmopressin) to simulate abnormal secretion of antidiuretic hormone (ADH), and supplemented with precise liquid diet regulation, an animal model highly consistent with the clinical pathological mechanism is constructed. The method is suitable for biological and pharmaceutical research scenes such as pathogenesis research of cirrhosis complications, drug screening targeting ADH pathway, and efficacy evaluation of anti-water retention drugs, and has advantages such as short modeling cycle (≤5 days), high stability (modeling rate ≥ 85%), low mortality (≤10%) and multi-index stratified verification.

The utility model relates to the technical field of sorting and screening devices, and discloses a bearing steel ball stepped sorting and screening device which comprises a cabinet body, a fixing plate is fixedly connected to the rear side of the outer wall of the cabinet body, a fixing long rod is fixedly connected to the left side of the outer wall of the fixing plate, and a limiting ring is fixedly connected to the left side of the outer wall of the fixing long rod. A sorting bed is arranged at the top of the cabinet body, a movable round rod is fixedly connected to the rear side of the outer wall of the sorting bed, the movable round rod is slidably connected to the interior of a limiting ring, and a rotating shaft is fixedly connected to the left side of the outer wall of the movable round rod. According to the bearing steel ball stepped sorting and screening device, the sorting bed shakes left and right by starting the motor, so that bearing steel balls with different diameters are separated, and the problems that when a bearing steel ball stepped sorting and screening device sorts the bearing steel balls in a vibration mode, the surfaces of the steel balls are damaged, the overall quality of the bearing steel balls is affected, and the performance and the use value of the bearing steel balls are reduced are solved.

The utility model belongs to the technical field of powder screening, and particularly relates to a powder screening device for preparing neodymium iron boron magnetic particles, which comprises a screening box, universal wheels are fixedly connected to the periphery of the bottom of the screening box, a feeding bin is arranged at the top of the screening box, and the outside of the feeding bin is fixedly connected with the feeding bin through a fixing block. An anti-blocking mechanism is arranged at the bottom of the feeding bin, and a screening mechanism is arranged in the screening box. The screening mechanism comprises a screening unit and a vibration unit; the screening unit comprises connecting blocks, a screening disc, a first spring, a first air cylinder, a second supporting block, a second spring and a screening plate, and the two connecting blocks are fixedly connected to the upper portion of the interior of the screening box. According to the powder screening device for neodymium iron boron magnetic particle preparation, through the two sets of screening plates with different screening hole sizes, multi-stage screening of powder is achieved, powder of different particle sizes is effectively separated out, the powder screening requirements of different particle size requirements are met, and the screening efficiency and precision are improved.

The integrated material screening device for municipal engineering is applied to the field of material screening and comprises a mounting frame, fixed plates are fixedly connected to the two sides of one end of the mounting frame, two left rotating shafts are rotationally connected between the two fixed plates, and different types of screening requirements are integrated in the same equipment through a multi-mode screening function; the rotary screen mode and the straight screen mode are combined, the screening mode can be adjusted according to the characteristics of materials, the rotary screen mode is suitable for large-particle materials which are wet or high in viscosity, the screening efficiency is low, and the screening effect is good. The screening mode is suitable for fine-particle, uniform and dry materials, the screening efficiency is high, the screening mode is particularly suitable for mass production, and through mode switching, the applicability and the processing efficiency of the equipment can be improved, and the screening requirements under different working conditions are met.

The invention provides a kit and a method for establishing a local poison substance spectrum database and screening 74 poison drugs in blood. The kit comprises a mobile phase solution and a detection reagent, wherein the mobile phase solution comprises a mobile phase solution A and a mobile phase solution B which are separately stored; the standard substance solution is a standard stock solution prepared from 74 toxic drug standard substances respectively; the internal standard solution is a mixed internal standard stock solution prepared from isotope standard substances of the two toxic drugs; the quality control product is a mixed quality control stock solution prepared from 74 toxic drug standard substances; and blank serum. The kit and the method have the advantages that for 74 toxins (drugs), the drugs / toxins have high linearity (Rgt; 0.9), high sensitivity, accuracy and precision are achieved, and the detection performance is excellent.

The invention discloses a production device and a production method of a slow-release vitamin E waste liquid fertilizer, and relates to the technical field of waste liquid fertilizer production.The production device comprises a screening base, the two ends of the top face of the screening base are each fixedly connected with a set of corresponding screening side frames, and an equipment cage is fixedly connected between the corresponding faces of the multiple screening side frames; a first screening roller is rotatably connected to the center of the interior of the equipment cage, and a second screening roller is slidably connected to the interior of the first screening roller at the same time. Screening holes formed in the outer wall of the first screening roller and the outer wall of the second screening roller are staggered, the particle size of raw materials screened by the device is adjusted and controlled, and then the screening efficiency is improved. By accurately adjusting the relative position between the first screening roller and the second screening roller, the device can subjectively adjust and control the particle size of screening holes according to the process requirements of different production processes, and the particle size of screened raw materials can meet the screening requirements of raw materials with different particle sizes.

The utility model provides a kaolin raw ore multi-layer efficient screening device, relates to the technical field of mineral equipment, and solves the problems that an existing screening device is poor in single-layer screening effect, a screen and a frame are integrated, the screen cannot be replaced, the whole screening device needs to be scrapped, and the cost is high. The vibrating screen comprises an inclined frame and further comprises a first screen mesh assembly and a second screen mesh assembly which are detachably installed on the inclined frame, the second screen mesh assembly is located below the first screen mesh assembly, the first screen mesh assembly comprises a first screen mesh frame and a first screen mesh arranged in the first screen mesh frame, and the second screen mesh assembly comprises a second screen mesh frame and a second screen mesh arranged in the second screen mesh frame. The second screen mesh assembly comprises a second screen mesh frame and a second screen mesh arranged in the second screen mesh frame. The multi-layer screening device has the advantages that multi-layer screening can be carried out, screening is accurate, and replacement and maintenance can be rapidly carried out; the structure is more stable and the service life is long.

The application discloses a kind of test device and method for material weld venting characteristic analysis under vacuum condition, it is related to material analysis field, device includes mutually communicating vacuum pumping system, measuring system and with the standardization sample of measuring system connection;Vacuum pumping system contains air extraction chamber, vacuum pumping set, vacuum valve, air extraction chamber is equipped with first vacuum gauge tube and both sides symmetry is equipped with flow guide small hole;Measuring system contains first, second test chamber, two test chambers are equipped with second, third vacuum gauge tube and mass spectrometer respectively;Standardization sample includes weld test piece and no weld standard piece, two are respectively mounted in two test chamber opening place by sealing flange, wall thickness, material and test chamber are identical, except weld area, the effective venting surface area of base material is equal, the device is designed by symmetrical structure and standardization sample, guarantee test environment equivalence and sample comparability, can accurately quantify weld venting characteristic, provide reliable data support for vacuum cavity welding process optimization.

The present invention discloses a wood material crushing device for wood powder production, including a conveying and cutting mechanism and a crushing and grinding mechanism. The conveying and cutting mechanism is used to convey and cut wood materials, and the conveying and cutting mechanism includes a height adjustment plate, a sliding pressure rod, a positioning pressure plate and a conveying belt; the crushing and grinding mechanism is used to crush the cut wood materials, and the crushing and grinding mechanism includes a crushing box, a screening cylinder and a sealing member. The present invention belongs to the technical field of wood material crushing, and specifically provides a wood material crushing device for wood powder production that can ensure that wood materials are smoothly conveyed and pushed to the first and second blade discs in a stable state for cutting, and can conveniently adjust and select the mesh size of the screen according to the use requirements of wood powder.

This invention proposes a wheat seed selection device, including a frame. Inside the frame, from top to bottom, are inclined and adjustable primary and secondary screens. This invention features a reasonable design and convenient operation. By setting multiple inclined adsorption plates between the primary and secondary screens, it can adsorb metallic impurities mixed in with the wheat seeds. Because there are multiple adsorption plates, falling seeds first land on them, adsorbing metallic impurities without accumulation. Furthermore, it allows workers to easily remove the adsorbed metallic impurities from the drain outlet, achieving rapid cleaning. In addition, the pull-out primary and secondary screens facilitate maintenance and replacement, improving disassembly and assembly efficiency, and also allow for easy screen angle adjustment to meet screening needs under different working conditions, thus expanding its applicability.

The invention belongs to the technical field of metal nano powder preparation, and particularly discloses a metal nano powder preparation system which comprises a preparation rack, a powder preparation mechanism matched with the preparation rack is arranged on the preparation rack, the powder preparation mechanism comprises a reaction structure, the reaction structure is connected with an atomization structure, and the atomization structure is connected with a screening structure; the metal nano-powder is prepared in the vacuum environment, the influence of the environment on the metal nano-powder during atomization can be reduced, the oxygen content of the metal nano-powder is reduced, and the quality of the metal nano-powder is improved; the gas atomization method is adopted for preparing the metal nano-powder, large metal particles or metal blocks can be directly prepared into the metal nano-powder, and the metal nano-powder with the characteristics of being small in particle size, high in sphericity degree, low in oxygen content and the like can be prepared at low cost.

The matrix raw material screening machine comprises a machine frame, a moving assembly and a material screening assembly, the moving assembly and the material screening assembly are installed on the upper side and the lower side of the machine frame respectively, the moving assembly is provided with a guide rail, a walking steering engine and a discharging bin, the guide rail is fixed to the top of the machine frame, and a rack is arranged on the inner side of the guide rail; the discharging bin is of a hopper structure with the upper end open and the lower end provided with a discharging port, walking steering engines are arranged on the two sides, close to the guide rails, of the discharging bin, the shaft ends of the walking steering engines stretch into the inner sides of the guide rails and are connected with gears meshed with the racks, and the discharging bin can move in the length direction of the guide rails through the walking steering engines and conduct fixed-point discharging. The screening assembly is provided with a screening frame, a movable rod, a swing rod, a motor, a driving wheel, a transmission wheel, a rotating shaft and a shaft sleeve. According to the screening machine, matrix raw materials can be screened through the swing type screening assembly, efficiency is high, and the screening requirements of matrixes of different fineness can be met.