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15results about How to "Precise volume control" patented technology
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Aqueous humor quantitative collection device capable of accurately controlling pressure
The utility model discloses an aqueous humor quantitative collecting device capable of accurately controlling pressure, which is characterized in that a limiting device is arranged on an adjusting device; the control button is slidably arranged on the adjusting device in a sleeving mode and can rotate to a locking working position or a starting working position relative to the adjusting device. The piston assembly penetrates through the limiting device and the adjusting device and is fixedly installed on the control button. A plurality of scale marks are arranged on the outer wall of the suction cylinder, the suction cylinder is fixed to the adjusting device, and the suction cylinder is arranged outside the limiting device and the piston assembly in a sleeving mode; the liquid collecting assembly is installed at the end, away from the adjusting device, of the suction barrel and communicates with the suction barrel. By using the device, intraoperative side injury caused by movement of eyeballs of a patient in an operation can be effectively avoided, meanwhile, loss of intraocular fluid sample amount collected by an injector is avoided, the volume of the sampled intraocular fluid can be accurately controlled, the intraocular pressure level can be reduced, the operation process is convenient and rapid, and pain of the patient is obviously relieved.
Owner:SHANGHAI TONGJI HOSPITAL
Simulation device and simulation method for water flow deposition process of riverway in arid region
ActiveCN119666315Aimprove accuracygood repeatabilityHydrodynamic testingPermeability/surface area analysisAridRiver routing
The invention discloses an arid region river flow deposition process simulation device and method, the device comprises an experiment water tank, a river simulation assembly, a first water tank and a second water tank, the experiment water tank is provided with an upstream end and a downstream end in the length direction, and the downstream end is provided with at least one water outlet; the riverway simulation assembly is arranged in the experimental water tank and comprises a first simulation layer and a second simulation layer which are sequentially arranged in a stacked mode in the vertical direction, the first simulation layer is formed by laying at least one of multiple first filling sediments with different components and / or thicknesses, and a channel with an upward notch is formed in the middle of the first simulation layer; the channel is provided with a water inlet close to the upstream end and a water outlet close to the downstream end, and the second simulation layer is formed by laying at least one of a plurality of second filling sediments with different components and / or thicknesses; the first water tank is connected with a water inlet of the channel; the second water tank is connected with a water outlet of the experimental water tank; therefore, the accuracy and repeatability of the experiment are improved, and the application range is expanded.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Portable water body micro-plastic sample separation and enrichment device and use method thereof
PendingCN119510090APrecise volume controlavoid pollutionPreparing sample for investigationWater storageFilter system
The invention discloses a portable water body micro-plastic sample separation and enrichment device and a use method thereof, and particularly relates to the field of environmental protection experiment equipment.The portable water body micro-plastic sample separation and enrichment device comprises a pressure system, a filtering system and a supporting device.According to the portable water body micro-plastic sample separation and enrichment device, a water storage barrel with scales is adopted, the volume of a water sample is accurately controlled, and different experiment requirements are met; after the stored water reaches the expected volume, the spherical valve is opened, so that the water sample flows through the filtering membrane under the action of gravity, and the unpowered filtering is realized; when water outlet is blocked, pressurization can be performed through a pressure system, a water sample is forced to be rapidly filtered, or a spherical valve is closed, and a filter membrane in the filter screen device is replaced, so that the collection efficiency is improved or the collection requirements of different micro-plastic particle sizes are met, the filter device is designed to be of a detachable structure, and the filter membrane is convenient to replace; after collection, the filter membrane is directly taken out to clean and collect the collected plastic particles, the operation is simple, the cost is low, the occupied space is small, the movement is flexible, and the experiment effect is good.
Owner:INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
Telescopic pen container
ActiveCN222346610UPrecise Control Quantitycontrol quantityWriting accessoriesRetractable penStructural engineering
Owner:DONGGUAN HENGLI MIDDLE SCHOOL
Multipurpose tandem extraction device for pesticide residue detection
ActiveCN222353632UPrecise volume controlimprove accuracyPreparing sample for investigationSolid sorbent liquid separationPesticide residueStructural engineering
The utility model relates to the technical field of pesticide residue detection, and discloses a multipurpose pesticide residue detection series extraction device which comprises a base, the left side and the right side of the top end of the base are fixedly connected with supporting plates, the top ends of the adjacent sides of the two supporting plates are connected with a first layer plate in a sliding mode, and the front side and the rear side of the first layer plate are provided with a plurality of clamping grooves. Circular funnels are arranged on the inner walls of the clamping grooves in the front and rear sides of the left part, conical funnels are arranged on the inner walls of the clamping grooves in the front and rear sides of the middle part, elliptical funnels are arranged on the front and rear sides of the right part, the bottoms of the circular funnels, the conical funnels and the elliptical funnels are communicated with cylinders, and pistons are arranged on the upper and lower sides of the outer walls of the cylinders. According to the device disclosed by the utility model, through mutual matching among the clamping groove, the first laminate and the piston, the dosage can be accurately controlled during titration, and through mutual matching among the sieve plate, the adsorbent and the beaker, liquid to be detected can be further extracted.
Owner:天津市农业生态环境监测与农产品质量检测中心(天津市农业机械质量鉴定中心天津市农药兽药检定中心)
Test device and method for testing and sampling discharge rate of coal mining slurry
PendingCN122545302APrecise control of formTrue reflection of actual mechanical properties
The present application relates to the technical field of filling coal mining, and particularly relates to a filling coal mining slurry bleeding rate testing and sample preparation test device and test method. The device comprises: a constraint cylinder, the side wall of which is a hollow structure; a flexible bleeding unit, which is attached to the inner side wall of the constraint cylinder; an inner lining structure, which is attached to the inner side wall of the flexible bleeding unit, and the inner lining structure is provided with a plurality of support platforms along the height direction; and a plurality of sample molds, which are arranged on the support platforms. The present application can simultaneously meet the needs of filling coal mining slurry bleeding rate testing and filling coal mining slurry standard sample preparation, effectively avoid the problems of sample height reduction and size not meeting the standards caused by water loss, accurately control the slurry form, ensure the formation of standard samples, and truly reflect the actual mechanical properties of the filling body. The sample height change before and after the slurry bleeding can be recorded in real time, and the volume of the slurry in the actual filling process can be quickly calculated.
Owner:CCTEG COAL MINING RES INST
Concentric circle sperm quality analyzer sample pretreatment structure
ActiveCN224189667Uachieve swingAchieve centrifugal mixing effectMaterial analysis by observing effect on chemical indicatorPreparing sample for investigationElectric machinerySpermatid
The utility model relates to the technical field of semen quality analysis, in particular to a concentric circle sperm quality analyzer sample pretreatment structure which comprises a monitor, the bottom end of the inner side of the monitor is fixedly connected with a stepping motor, and the output end of the stepping motor is fixedly connected with a connecting disc. A first circular ring, a second circular ring and a third circular ring are fixedly connected to the top of the connecting disc, an insertion hole is formed in the first circular ring, a sampling cup is slidably connected to the insertion hole, a fixing cylinder is fixedly connected to the bottom end of the inner side of the insertion hole, and placement grooves are symmetrically formed in the outer side of the fixing cylinder; the concentric circle sperm quality analyzer sample pretreatment structure comprises a fixing cylinder, a placing groove is formed in the fixing cylinder, a mounting disc is fixedly connected to the inner side of the fixing cylinder, a connecting groove is formed in the mounting disc, and the interior of the placing groove is communicated with the interior of the connecting groove. And sampling cups with different sizes can be quickly clamped and fixed.
Owner:JILIN KEYI MEDICAL EQUIPMENT CO LTD
Automatic titration device for microcalorimeter
ActiveCN224189934Uprecise speed controlPrecise volume controlMaterial heat developmentBurettes/pipettesClassical mechanicsServo
The utility model provides an automatic titration device for a microcalorimeter. The automatic titration device comprises a fixed shell, a plurality of micro servo motors are installed in the top end of the fixing shell, an output shaft of one micro servo motor is connected with a rotating shaft, output shafts of the other micro servo motors are connected with screw rods, and the side walls of the screw rods are in threaded connection with fixing blocks; a calibration plate and a compression rod are slidably connected to the interior of the fixing shell, the calibration plate is fixedly connected to the top end of the compression rod, and the top end of the compression rod abuts against the fixing block; a contact sensor is installed in the fixing block and abuts against the top face of the compression rod. An injector is installed in the fixing shell, and a push rod in the injector is clamped into the compression rod. The automatic titration device for the microcalorimeter, provided by the utility model, has the advantage of automatically and accurately dripping a measured substance into a solution.
Owner:ANHUI ZHONGKE THERMOMETER TECHNOLOGY CO LTD
A Uniformly Leaked Dual-Magnetic-Circuit Moving-Coil Loudspeaker
This utility model discloses a uniformly vented dual-magnetic-circuit moving-coil loudspeaker, including a frame, a diaphragm voice coil mounted on the top of the frame, a partition assembly mounted on the bottom of the frame's inner cavity, and a resonant cavity on opposite sides of the frame and partition assembly. A partition vent hole is circumferentially formed on the partition assembly, and a frame vent hole is circumferentially formed at the bottom of the frame. This utility model has the advantage of uniform venting, solving the problem that existing moving-coil loudspeakers, during use, do not easily and smoothly expel air from the speaker's interior, and when the diaphragm's vibration amplitude is too large, it easily causes unbalanced diaphragm vibration due to impeded air expulsion.
Owner:NANNING HEAVY HAMMER TECH CO LTD
Method for preparing ball grid array (BGA) solder ball by spot-coating solder paste
PendingCN119589203APrecise volume controlAccurate quality controlLiquid surface applicatorsWelding/cutting media/materialsSolder ballSolder paste
The invention discloses a method for preparing a ball grid array (BGA) solder ball by dispensing solder paste, which comprises the following steps of: preparing the solder paste from tin-based solder powder and flux paste, filling the solder paste into a needle cylinder of a dispenser, and installing a matched needle head according to the particle size of the BGA solder ball to be prepared; calculating the dosage of the solder paste, and setting the air pressure of a dispensing machine, the tin dispensing speed and the tin dispensing mode; starting a dispensing machine, and dispensing the solder paste on the smooth flat plate carrier by the dispensing machine; heating the flat carrier, melting and cooling the soldering tin to form a solder ball; and the solder balls are taken down, roundness sorting is carried out, and finished BGA solder balls are obtained. The preparation method is simple, the particle size of the BGA solder ball can be accurately controlled, the particle size uniformity is good, and the production efficiency is high.
Owner:YUNNAN TIN INDIUM LAB CO LTD
A high-damping high-modulus Mg-Y-Ni magnesium alloy and a preparation method thereof
PendingCN122279344APrecise volume controlPrecise control of phase distanceMagnesium alloyElastic modulus
This application discloses a high-damping, high-modulus Mg-Y-Ni magnesium alloy and its preparation method, relating to the field of high-performance magnesium alloy preparation technology. The alloy uses Mg as the matrix, with Y and Ni as alloying elements, and the atomic ratio of Y to Ni is 1:1. The alloy microstructure consists of an α-Mg matrix and a continuous network of 18R-type LPSO phase. This high-damping, high-modulus Mg-Y-Ni magnesium alloy and its preparation method, through compositional design with an equiatomic Y / Ni ratio, precisely controls the volume fraction and interphase spacing of the LPSO phase, directly constructing a continuous network LPSO / α-Mg heterostructure in the as-cast state. This overcomes the bottleneck of traditional magnesium alloys where "increasing the modulus leads to a decrease in damping," simultaneously achieving a synergistic improvement in both elastic modulus and damping performance.
Owner:ZHONGBEI UNIV
Multifunctional sample reaction plate preparation platform
The invention relates to a multifunctional sample reaction plate preparation platform. The multifunctional sample reaction plate preparation platform comprises a sample transfer module, a reagent adding module, a drying module and a heat sealing module. The sample pipetting mechanism is detachably connected with the sample liquid sucking and spraying driving mechanism through the pipetting head quick-changing equipment; the reagent adding module comprises a reagent pipetting mechanism, a reagent pipetting needle and a reagent pipetting chamber which are communicated, the reagent pipetting chamber is provided with a reagent pipetting structure, and the reagent pipetting structure can provide pressure for the reagent pipetting chamber, so that a reaction reagent in the reagent pipetting chamber is sprayed out through the reagent pipetting needle; the drying module is used for drying a biological sample in a sample plate of the drying preparation station, and / or drying a biological sample in a reaction plate of the drying preparation station; and the heat sealing module is used for sealing the reaction plate at the heat sealing station. The flux is not limited, the plate making speed is high, sample evaporation loss and aerosol-mediated cross contamination are avoided, and meanwhile, the concentration of a reaction reagent is not easy to dilute.
Owner:HC BIOENG (CHENGDU) CO LTD +1
APP module firmware compiling and updating method, computer equipment and storage medium
ActiveCN119292644APrecise volume controlsave compilation timeVersion controlEnergy efficient computingSoftware updateSoftware engineering
The invention relates to the technical field of software development and compiling, and discloses an APP module firmware compiling and updating method, computer equipment and a storage medium. When it is monitored that a source code library changes, information stored last time and information stored this time are compared through combination of a list file and a JSON file; therefore, it can be ensured that only codes of the modules needing to be recompiled are compiled each time, unnecessary repeated compiling work can be effectively reduced, compiling time is shortened, meanwhile, the size of the OTA differential package is accurately controlled, and more efficient, rapid and user-friendly software updating experience is achieved.
Owner:DONGGUAN HUABEL ELECTRONICS TECH
Automatic surface enhanced Raman spectrum detector
ActiveCN224122469Ujoin precisionguaranteed mixRaman scatteringSurface-enhanced Raman spectroscopyPhysical chemistry
The utility model discloses an automatic surface enhanced Raman spectrum detector which comprises a box body, a box cover hinged to one side of the box body, and a sample detection bin, a Raman placement bin and a plurality of liquid adding grooves which are formed in the top of the box body, a sample disc is arranged on the inner side of the sample detection bin, a sample groove is formed in the top of the sample disc, a plurality of clamping grooves are formed in the inner side of the sample groove, and a plurality of detection holes are formed in the side face of the sample disc. The sample disc, the Raman module, the liquid separator and the box body form an integrated structure, so that automatic surface enhanced Raman spectrum detection can be realized, a to-be-detected liquid, a nano reagent and a coagulant can be accurately added and mixed, the volume of the added liquid and the reaction time can be accurately controlled through software, the detection efficiency is improved, and the detection cost is reduced. The consistency of the detection processes of different batches is ensured, the interference caused by manual operation is effectively avoided, the cross contamination of reagents is prevented, the consistency of experimental conditions is improved, and the accuracy of quantitative detection is ensured.
Owner:SUZHOU YITAN INSTRUMENT TECHNOLOGY CO LTD
Visual high-temperature foam performance testing device
ActiveCN224203047Uheating evenlylow costMaterial analysis by optical meansWater bathsTemperature control
The utility model discloses a visual high-temperature foam performance testing device which comprises a gas transmission system, a constant-temperature circulating system, a shooting system and a foam performance evaluation system, and the gas transmission system is connected with the foam performance evaluation system through a bottom valve of a double-layer chromatographic column at the bottom; and the constant-temperature circulating system is connected with the foam performance evaluation system through a connector on the left lower side and a connector on the right upper side of the double-layer chromatographic column. The visual high-temperature foam performance testing device is connected with a constant-temperature circulating system to analyze the performance of high-temperature foam. The constant-temperature circulating system is composed of a constant-temperature water bath box, a water pump and a high-temperature-resistant silicone tube, and uniform heating of the double-layer chromatographic column is achieved through jacket water circulation. High-purity distilled water is used in the water bath box, heat stability is guaranteed, the total cost of components is far lower than the price of a high-temperature foam analyzer adopting an airflow method in the market, and low-cost and efficient temperature control is achieved.
Owner:XINJIANG UNIVERSITY