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Supercritical carbon dioxide fracture-creepage-seepage test device for high-temperature high-pressure coal petrography
InactiveCN110057739AMonitor pressureRich researchPermeability/surface area analysisEngineeringHigh pressure
The invention discloses a supercritical carbon dioxide fracture-creepage-seepage test device for high-temperature high-pressure coal petrography. The device comprises a triaxial cell, a supercriticalcarbon dioxide generator system, an axle load and confining pressure loading system, an acoustic emission monitoring system, a temperature rise control system, a deformation-pressure monitoring systemand a permeability measuring system. The device is capable of realizing the supercritical carbon dioxide fluid fracture test of coal petrography under high temperature and high pressure, monitoring and recording the temperature and pressure changes of supercritical carbon dioxide and characteristics of fracture cracking and extension in the supercritical carbon dioxide fracture process in real time, monitoring and recording the axial and radial deformations of coal petrography samples in real time, directly and effectively measuring the DH4 permeability of the coal petrography before and after the fracture without unloading the coal petrography sample stress, and measuring the CH4 permeability of the coal petrography after the fracture under the action of creepage. The measurement methodis high in precision, intuitional and high in automation degree, and the device is simple in structure.
Owner:TAIYUAN UNIV OF TECH
Large mechanical test system for combined adjustable constraint concrete arch frame
ActiveCN103883333AEfficient detection of acoustic emission response behaviorRealize mechanical testUnderground chambersTunnel liningForce structureHydraulic cylinder
The invention relates to a large mechanical test system for a combined adjustable constraint concrete arch frame. The system comprises a monitoring system, a hollow cylindrical counter force structure, a hydraulic loading device and an auxiliary loading device, wherein the monitoring system is used for monitoring and collecting arch frame parameters and data. The inner cylindrical surface of the counter force structure is provided with multiple oil cylinder positioning holes, the hydraulic loading device is disposed in the oil cylinder positioning holes, the hydraulic loading device comprises a hydraulic oil cylinder arranged in the oil cylinder positioning holes, a force transmission dispersion device connected with the hydraulic oil cylinder and a control system, and the hydraulic oil cylinder achieves loading through contact of the force transmission dispersion device and an arch frame to be tested. By means of the system, a 1:1 mechanical test can be carried out on the constraint concrete arch frame and other conventional arch frames, and tests of arch frames of different sizes and shapes can be achieved.
Owner:SHANDONG UNIV +1
Full-automatic QuECHERS experimental device and experimental method
ActiveCN112198324AHigh degree of experiment automationImprove experimental efficiencyPreparing sample for investigationExperimental methodsSolid phase extraction
The invention discloses a full-automatic QuECHERS experimental device and an experimental method. The full-automatic QuECHERS experimental device comprises a multifunctional mechanical arm, a cap screwing module, a liquid adding module, a centrifugal module, a salt adding module, a ceramic proton homogenization module, a nitrogen blowing concentration module, a vortex uniform mixing module and anoscillation module, and can automatically complete sample transferring, addition of extraction liquid, extraction salt and ceramic homogenization protons, oscillation uniform mixing, centrifugal separation and vortex uniform mixing actions; A method adopting the full-automatic QuECHERS experimental device to carry out experiments mainly integrates the processes of sample liquid adding extraction,centrifugal separation, solid phase extraction and nitrogen blowing concentration, so that the time is saved, the manual operation is reduced, the automation is improved, and the errors are reduced.
Owner:BEIJING HUIRONGHE TECH
High temperature and high pressure coal rock supercritical carbon dioxide fracturing-creep deformation-seepage experimental method
ActiveCN110057740AMonitor pressureRich researchPermeability/surface area analysisExperimental methodsRock sample
The invention discloses a high temperature and high pressure coal rock supercritical carbon dioxide fracturing-creep deformation-seepage experimental method. A supercritical carbon dioxide fluid fracturing-creep deformation-seepage experiment of coal rock is executed under high temperature and high pressure, change of temperature and pressure of the supercritical carbon dioxide and fracture crackinitiation and expansion features in a supercritical carbon dioxide fluid fracturing process are monitored and recorded in real time, and axial deformation and radial deformation of a coal rock sampleare monitored and recorded in real time, moreover, CH4 permeability of the coal rock before and after fracturing can be measured directly and effectively under a condition where coal rock sample stress is not cancelled, and measurement of the permeability of the CH4 of the coal rock under the creep deformation function after fracturing can be realized. The measurement method provided by the invention is high precise, visual and highly automatic, and devices used in the method are simple in structure.
Owner:TAIYUAN UNIV OF TECH
Scalable multiple-proportion dilution microfluidic chip as well as preparation method and dilution method of microfluidic chip
ActiveCN109847815AMeet the requirements of multi-stage dilutionAccurate concentrationMixing methodsLaboratory glasswaresMixed flowSquare waveform
The invention provides a scalable multiple-proportion dilution microfluidic chip. The microfluidic chip is composed of a cover sheet and a substrate, the upper layer is the cover sheet provided with asquare wave micro flow channel network structure, the lower layer is the flat substrate, and the upper-layer cover sheet and the lower-layer substrate form a closed micro flow channel network throughbonding; two sample inlets and N sample outlets located in both ends of the micro flow channel are connected with soft guide pipes outside, wherein N is an integer >= 1, and N outlets represent a dilution level of a liquid sample to be diluted; a reagent sample to be diluted and a diluent in a micro-syringe are added into the sample inlets through a micro injection pump under a constant positivepressure, respectively, and the soft guide pipes at the sample outlets are connected with a collection device of a sample after multiple-proportion dilution to form the microfluidic chip; each sampleinlet is provided with one filter tank, and the interior of each filter tank is provided with a row of same rectangular stop blocks with a certain interval; each-level dilution module is composed of amixed flow channel and a connecting flow channel, and lengths of the mixed flow channel and the connecting channel are fixed; and rectangular baffles arranged in a staggered manner are arranged at the corner of the interior of the square wave mixed flow channel in each-level dilution zone.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI
Ice water heat exchange coefficient experimental apparatus and measurement method
The invention provides an ice water heat exchange coefficient experimental apparatus which comprises a water tank 1, a water pump 3, a gate valve 4, a thermoregulator 5, a current meter 6, an ice thickness change measuring instrument 7 and a temperature recorder 8, wherein the water pump 3, the gate valve 4 and the thermoregulator 5 are sequentially connected through a pipeline 2 and form a loop; measurement probes of the current meter 6 and the temperature recorder 8 are positioned in the water tank 1; a measurement probe of the ice thickness change measuring instrument 7 is positioned in an ice layer 19 and water in the water tank. The invention also provides a method for measuring an ice water heat exchange coefficient by utilizing the device. The device well simulates reservoir icing and low-flow speed water flow conditions, acquires an ice water heat exchange coefficient of a corresponding reservoir and provides a design basis for water conservancy projects, also avoids the difficulty of developing reservoir ice water heat exchange coefficient prototype measurement in a rushing frigid zone reservoir area and provides great convenience and implementation possibility for research.
Owner:SICHUAN UNIV
Automobile buckle insertion and extraction force and stress-strain test fixture
The invention belongs to a positioning test fixture, and particularly relates to an automobile buckle insertion and extraction force and stress-strain test fixture. The test fixture comprises two parts including an insertion force fixture and an extraction force fixture corresponding to the insertion force fixture; the insertion force fixture comprises an insertion force fixture clamping block connected with a test machine, a first body, a second body, a third body, fixed sliding blocks and pressing circular plates; and the extraction force fixture comprises an extraction force fixture clamping block, an extraction force supporting assembly, a fixed baffle, a clamping device, a rotating knob and a clamping force adjusting round rod. The fixture is used during testing of stress-strain performance of an automobile buckle, and can clamp and position the buckle well during testing of the stress-strain of the automobile buckle, and slots in different models are formed in an H-shaped plate, so that buckles in various models can be tested. The test fixture is reasonable in structural design and convenient to operate; and the insertion and extraction force performance of plastic buckles can be tested accurately.
Owner:JILIN UNIV
Single-chip microcomputer modularization experiment training system and method based on virtual simulation platform
InactiveCN105913739AEasy to writeEasy and intuitive to writeEducational modelsMicrocontrollerSimulation
The invention discloses a single-chip microcomputer modularization experiment training system and method based on a virtual simulation platform. The system comprises a virtual simulation part and an experiment box training part. The virtual simulation part comprises a plurality of virtual simulation experiment circuits matched with each experiment module of an experiment box; and integral virtual simulation experiment circuits formed by combination of different experiment modules and matched with the experiment box. The experiment box training part comprises an IC locking socket, and a single-chip microcomputer minimum system module, a nixie tube display module, an LED indication lamp, a power supply module, a USB downloading module, a serial port downloading module, a data storage module, a data conversion module, a clock module and an autonomous exploitation module are respectively arranged on the IC locking socket. The single-chip microcomputer modularization experiment training system and method have the advantages that virtual simulation of software is utilized, there is no need to repeatedly download a debugging program on a practical hardware circuit, the time is saved, the loss of the equipment is avoided, and the service lifetime of the equipment is prolonged.
Owner:SHANDONG NORMAL UNIV
Comprehensive shear tester for anchoring bodies and test method thereof
PendingCN109115632AAvoid affecting the experimental resultsSo as not to damageMaterial strength using steady shearing forcesEngineering
Owner:HENAN POLYTECHNIC UNIV
Experimental instrument for researching ideal gas state equation and operating method
ActiveCN105825749AGuaranteed accuracySimple structureEducational modelsControl variableIdeal gas law
The invention relates to the technical field of ideal gas state equation research of high school physics, in particular to an experimental instrument for researching an ideal gas state equation and an operating method. The experimental instrument is characterized by consisting of an air cylinder, a thermometer and an air pressure gauge, the air cylinder consists of a square air cylinder body, an equal-pressure piston and a positioning-adjusting piston, the air pressure gauge and the thermometer are arranged inside the square air cylinder body, the lower-end sensing portion of the air pressure gauge extends into the square air cylinder body, the upper-end reading display portion extends out of the square air cylinder body to achieve monitoring and recording of an air pressure value, the lower-end sensing portion of the thermometer extends into the square air cylinder body, and the upper-end reading display portion extends out of the square air cylinder body to achieve monitoring and recording of a temperature value. Due to the fact that a control variable method is applied on the same device to control the isothermal, isasteric and isobaric processes respectively, three gas experiment laws are respectively inspected to obtain a conclusion and draw p-V, p-T and V-T images, and the experimental instrument has the advantages of being accurate in variable control, facilitating mastering and understanding of students and the like.
Owner:威海泰华智能科技有限公司
Method for distinguishing natural colored cotton by virtue of content of flavone in colored cotton fibers
InactiveCN104048933ASimple extraction processHigh in flavonoidsPreparing sample for investigationColor/spectral properties measurementsReference sampleTextile technology
The invention relates to a method for distinguishing natural colored cotton by virtue of the content of flavone in the colored cotton fibers, which belongs to the technical field of textiles. The method comprises the following steps: immersing crushed to-be-detected colored cotton fibers in an ethanol solution for 1h, and ultrasonically extracting the solution to obtain flavone extraction liquid; respectively placing the flavone extraction liquid into 6 measuring flasks of 25ml according to different volumes, respectively adding a NaNO2 solution, an Al(NO3)3 solution and a NaOH solution into the six measuring flasks to have color development reaction, and fixing the volume to 25ml by utilizing the ethanol solution; respectively testing the light absorbance value of the flavone extraction liquid after color development and volume fixation in the six measuring flasks by utilizing an ultraviolet spectrophotometer; calculating the content value of flavone in the detected colored cotton fibers according to the content value of flavone in a rutin reference sample, and determining the colored cotton as the dyed cotton if the content value of the flavone in the to-be-detected colored cotton fibers is 0.1411 to 0.2314 mg / ml; determining the colored cotton as the natural colored cotton if the content value of the flavone in the to-be-detected colored cotton fibers is 0.7623 to 0.9522 mg / ml.
Owner:WUHAN TEXTILE UNIV
Perpendicular detecting method for detecting battery diaphragm liquid absorption speed and liquid protection volume
ActiveCN109738425AIncrease fluid retentionImprove accuracyMaterial analysis by observing effect on chemical indicatorPermeability/surface area analysisLithiumEngineering
The invention discloses a perpendicular detecting method for detecting battery diaphragm liquid absorption speed and liquid protection volume. The perpendicular detecting method for detecting the battery diaphragm liquid absorption speed and the liquid protection volume is convenient to operate, has small implementation difficulty, and battery diaphragms are tested through the steps such as interception and perpendicular infiltration. Compared with a traditional steeping method, a capillary phenomenon of micropore diaphragms is used in perpendicular detecting, an electrolyte solution is absorbed, and the situation that the steeping method affects an experiment result due to uncertainty of filter paper absorption time is avoided; moreover, an inert color developing agent is added into a testing solution, significant differences between samples can be intuitively observed, and the timeliness of diaphragm testing is improved; and furthermore, a drying step is additionally arranged, the dried diaphragm samples are adopted to calculate, the influence of lithium salt in the testing solution on the diaphragm samples can be removed, so that the liquid protection volume of the battery diaphragms is calculated more accurately, and thus, the accuracy of diaphragm testing is improved.
Owner:JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
Device for rapidly aging and evaluating SCR catalyst powder
ActiveCN104569287ASolving the Problems of AgingAvoid fragileChemical analysis using titrationSmall sampleFixed bed
The invention provides a device for rapidly aging and evaluating SCR catalyst powder. The device comprises a steel pipe with a size equal to a tail gas pipe, small sample reaction devices, a temperature sensor, a first NOx sensor and a second NOx sensor, wherein one end of the steel pipe is connected with a tail gas exhaust port, and a connecting device is arranged at the other end of the steel pipe; a main air outlet hole and small sample reaction device holes which are uniformly distributed around the main air outlet hole are formed in the connecting device; the small sample reaction devices are fixed in the small sample reaction device holes and are positioned in the steel pipe. According to the device disclosed by the invention, the defects of a fixed bed reactor and a simulated tail gas test system are overcome, the SCR catalyst can be subjected to rapid aging and preliminary evaluation by utilizing the tail gas of specified temperature provided by the simulated tail gas test system, and the problem that only the whole catalytic converter can be aged by the simulated tail gas test system is solved.
Owner:ZHEJIANG UNIV
Heat exchange tube fixing device
ActiveCN110806140AFully contactedCollisions don't get in the wayHeat exchanger casingsEngineeringPhysics
The invention discloses a heat exchange tube fixing device, belongs to the technical field of heat exchange tubes, and provides a heat exchange tube fixing device for a heat exchange tube impact wearexperimental device. The heat exchange tube fixing device comprises side plates, heat exchange tubes, shaft seats, central shafts and locking devices, wherein rectangular through grooves are formed ineach side plate, upper shaft seats and lower shaft seats are arranged in a sliding mode to be connected with the side plates, the height position of the heat exchange tubes is adjusted by adjusting the upper positions and the lower positions of the upper shaft seats and the lower shaft seats, the maximum line contact length between the two heat exchange tubes is guaranteed, and non-round gasketsare adopted, so that it is ensured that the pretightening force exerted by nuts is transmitted to the heat exchange tubes, the contact between every two corresponding gaskets can be avoided, and the heat exchange tube fixing device has the advantages of conveniently adjusting the horizontal height and not influencing experimental operation.
Owner:ZHEJIANG UNIV OF TECH
Constant-temperature type air-blowing drying oven
InactiveCN106500479AUniform temperatureImprove drying qualityDrying gas arrangementsDrying machines with non-progressive movementsInductorEngineering
The invention discloses a constant-temperature type air-blowing drying oven which comprises a box body, wherein the box body is divided into a dehumidifying cavity and a drying cavity; an air runner is formed between the drying cavity and the inner wall of the box body; a control valve is arranged in the dehumidifying cavity; the control valve is connected with a temperature inductor, and is used for controlling an air release valve, an air inlet valve and a circulating valve in the dehumidifying cavity; a rotary shaft is arranged on the top of the drying cavity; a drive device is arranged on the rotary shaft; air distributing plates are arranged at the periphery of the drying cavity; and an induced draft fan is arranged on a dehumidifying tube, and the port of the induced draft fan is further connected with a wet gas purifying device which is a multi-layer net structure. The rotary shaft and the air distributing plates are additionally arranged on an existing drying oven gas circulating system to form a ventilating circulating system, so that temperature uniformity and good drying quality in a drying cavity are guaranteed; the gas in the cavity is clean, so that cross contamination is avoided; and the constant-temperature type air-blowing drying oven is high in drying rate, is good in drying quality, is high in heat utilization rate, is good in practicability and is worthy of being widely popularized.
Owner:钦州市明大检测技术有限公司
Small microbial electrolysis cell and application thereof
InactiveCN103633356AInto the uniformAvoid affecting the experimental resultsTreatment with anaerobic digestion processesBiochemical fuel cellsEngineeringElectron
The invention relates to a small microbial electrolysis cell and application thereof. The electrolysis cell includes a flange, electrodes, copper bars, a microbial electrolysis cell reactor, an aeration plate and a stirring bar. Tiny aeration holes are uniformly formed in the aeration plate to allow gas bubbles to uniformly enter an electrolyte during N2 charging, so that the phenomenon that sudden gas expansion during N2 charging leads to unstable aeration, corrosion of the copper bars by the solution, and influence on the experiment effect is avoided. The electrodes are inserted into electrode clamping grooves in the upper surface of the aeration plate, electrons are supplied by an external electric field, and a DO or pH probe regularly passes through a through hole in the flange and fixed in a probe clamping groove in the center of the aeration plate, so that the DO or pH value of a reaction system can be monitored in real time. The microbial electrolysis cell can achieve stable and efficient degradation of perchlorate in water bodies.
Owner:SHANDONG UNIV
Rabbit spine curving device for experiment
ActiveCN102743236ANatural postureAvoid affecting the experimental resultsSurgical veterinaryEngineeringBall screw
The invention discloses a rabbit spine curving device for an experiment. The rabbit spine curving device comprises a device support, a transmission mechanism and a curving mechanism. The device support comprises a long transverse beam group, a short transverse beam group, a vertical column group and a transmission mechanism installation plate. The transmission mechanism comprises a direct current motor, a synchronous belt group, a synchronous wheel group, a driving shaft, a ball lead screw and a lead screw sliding block. The curving mechanism comprises a curving mechanism installation plate, a curving mechanism support, a crank group and a retainer group. An optical code disk is configured on the direct current motor and used for recording walking positions of the lead screw sliding block. The transmission mechanism transforms the motor rotation into horizontal moving of the lead screw sliding block, and the curving mechanism transforms the horizontal moving of the lead screw sliding block into the curving motion of the curving crank group to drive the spine of an experimental rabbit to perform curving motions. The spine curving device can perform spine curve according to given curved angles. The experimental rabbit can keep a natural posture in the spine curving process, and experimenters can easily perform operation on the rabbit spine.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
Apparatus simulating coughing of real human being
ActiveCN106023756AVolume determinationGood repeatabilityEducational modelsParticulatesSolenoid valve
The invention relates to an apparatus simulating coughing of a real human being. The apparatus comprises a particulate matter generation system including a particulate matter generator, an evacuation solenoid valve, a dust-adding solenoid valve and a dust-adding time control relay, and a compressed air jet generating system including an air compressor, a pressure gauge, a pressure-regulating valve, a flow control valve, a jet control solenoid valve, a jet time-control relay and a cylinder, wherein an air outlet pipe of the jet control solenoid valve and a pipe led out from the dust-adding solenoid valve of the particulate matter generation system are parallelly connected and then are connected to a coughing jet pipeline. This apparatus simulates coughing characteristics of a real human being, and meets the real human being coughing speed and flow rate, Jet speed change and temperature are consistent with the parameters of a real human being. Starting and stopping can be controlled only through solenoid valves, and operation is simple and accurate. A high-frequency hot line wind-velocity indicator is employed to determine the changing rules of gas flow velocity of a jet outlet. Parameters can be accurately determined according to the speed and flow curve of a measurement result calibrating device.
Owner:TIANJIN UNIV
A kind of soil sampling detection equipment and soil sampling detection method
ActiveCN108801689BLabor intensiveGuaranteed accuracyWithdrawing sample devicesSoil scienceAgricultural engineering
The invention provides a soil sampling detecting device and method. The device comprises a working platform, a soil sampling device and a soil sample collecting and storing device. The device and themethod solve the problems that more time is wasted in a traditional manual soil sampling method, the working intensity of workers is high, the soil is highly damaged in the sampling process, the uppersoil falls to a sampling layer during manual sampling, and the soil analyzing accuracy is interfered, and the analyzing result accuracy is ensured; in addition, manual storing of the soil sample easily leads to ignoring, resulting in disordered test tube stacking, and some soil detection is influenced by the air component; the samples in the test tubes are to be insulated from air; a test plug ismanually added to the test tube; the manual operation stability is low in the manual tube plug adding process; the test tube is broken and injures people due to high power, or the test tube plug is forged due to the ignoring of people.
Owner:北京建工环境工程咨询有限责任公司
Environment-friendly durable physical acceleration experiment device
InactiveCN111415555AAvoid affecting the experimental resultsAvoid damageEducational modelsGear wheelPaper tape
The invention discloses an environment-friendly durable physical acceleration experiment device, relates to the technical field of physical experiment equipment, and mainly aims to solve the problem that an existing experiment device needs a worker to pull a trolley with hands and needs cooperation of multiple persons. The device comprises a base plate, an experiment table, weights, a traction rope, a trolley, a dotting timer and a paper tape, and a first buffer device is arranged on one side, far away from the dotting timer, of the upper surface of the experiment table; motors are arranged onthe front side wall and the rear side wall of the trolley; a gear is mounted on an output shaft of the motor; electric push rods are mounted on front and rear sides of the upper surface of the experiment table; and racks are installed at the ends of telescopic rods of the electric push rods on the two sides of the experiment table and are meshed with the gear, and a second buffer device is arranged right under the weights. According to the present invention, with the arrangement of the motors, the gear, the rack and the electric push rods, the trolley does not need to always be pulled with the hand, and the influence on the experiment result due to the error caused by the manual pulling of the trolley by the experimenter is avoided.
Owner:陈晨
Fruit fly culture and dosage device for laboratory
ActiveCN107864932AAvoid harmReduce experiment costAnimal husbandryAgainst vector-borne diseasesBiotechnologyExperimental laboratory
The invention relates to a fruit fly culture and dosage device for a laboratory, and belongs to the technical field of fruit fly experiment devices for the laboratory, which solves the technical problems of replacing of different culture bottles and the like in the fruit fly culture and dosage process of the prior art. The fruit fly culture and dosage device for the laboratory adopts the solutionthat an upper section and a middle section, as well as the middle section and a lower section are respectively connected by a threaded connecting opening; a bottle cork is arranged at the upper end surface of the upper section, a medicine liquor adding pipe penetrates through the bottle cork and is communicated with the upper section, and the middle part of the side wall of the upper section is provided with an anesthetic air inlet I; a culture medium is arranged at the bottom part of the lower section, and the middle part of the side wall of the lower section is provided with an anesthetic air inlet II; a screen plate is arranged at the threaded connecting port I, and a blocking plate is arranged at the threaded connecting port II; a handle is used for driving the blocking plate or the screen plate to rotate from the 9 o'clock position to the 12 o'clock position along the pointer circular rotary track by a rotary shaft. The fruit fly culture and dosage device has the advantages that the problem of requiring of multiple steps and different culture bottles in the fruit fly dosage process is solved, and the experiment device integrating multiple steps is provided.
Owner:山西白求恩医院(山西医学科学院华中科技大学同济医学院附属同济医院山西医院山西医科大学第三医院山西医科大学第三临床医学院)
Traditional Chinese medicine case research and analysis device
InactiveCN111557852AAvoid affecting the experimental resultsAvoid enteringPharmaceutical product form changeStationary filtering element filtersMedicinal herbsBiomedical engineering
The invention relates to a traditional Chinese medicine case research and analysis device, which effectively solves the problem that the workload of experimenters is heavy due to complex operation inthe traditional Chinese medicine experiment process. According to the technical scheme, during use of the traditional Chinese medicine case research and analysis device, when the decocting cup moves to the position above the medicine receiving cylinder; a valve cavity is triggered to be opened synchronously, so that medicines in the decocting cups filled with different medicinal materials can be synchronously poured into the medicine receiving cylinder; by means of the device, the dosage needed by an experiment is set in advance, when the medicine in the medicine receiving barrel reaches the required dosage, the decocting cup stops pouring the medicine into the medicine receiving barrel,; and when the decocting cup is moved away from the upper portion of the medicine receiving barrel, sealing of the medicine receiving barrel is synchronously achieved; therefore, the situation that the decocted medicine volatilizes during cooling, and consequently the experiment result is affected is prevented.
Owner:HENAN UNIV OF CHINESE MEDICINE
Equipment for high-purity water
InactiveCN109095687AStrong stabilityAvoid backflow phenomenonTreatment involving filtrationMultistage water/sewage treatmentPollutantElectric heating
The invention discloses equipment for high-purity water. The equipment comprises a base, wherein the left side of the upper surface of the base is fixedly connected with a filter tank; a filter screenand an activated carbon filter layer are arranged in the filter tank, and the filter screen is located above the activated carbon filter layer; the upper part of the left side surface of the filter tank is fixedly communicated with a water inlet pipe which is located above the filter screen; the right side of the upper surface of the base is fixedly connected with a distillation tank which is located on the right side of the filter tank. According to the equipment for the high-purity water, the filter tank is arranged, so that raw water can be filtered sufficiently and pollutants in the watercan be adsorbed effectively under the action of the filter screen and the activated carbon filter layer; an electric heating pipe can heat filtered water effectively to enable the water to be turnedinto steam; by means of a condensing cavity, the steam can be introduced into the condensing cavity and cooled to be reduced into water under the action of a cold air pipe and a lead-out pipe; the equipment is simple in structure and low in manufacture cost, and can fully meet the requirement of a laboratory for preparing the high-purity water.
Owner:WUXI KELIYA WATER TECH CO LTD
Energy-saving self-stirring bioreactor
InactiveCN112080397AEvenly heatedImprove reaction efficiencyBioreactor/fermenter combinationsBiological substance pretreatmentsMicroorganismCircular disc
The invention discloses an energy-saving self-stirring bioreactor. The bioreactor comprises a reaction box, wherein an annular heating plate is embedded in the inner wall of the reaction box, a stirring rod is rotatably connected to the bottom in the reaction box through a rotating shaft seal. The lower end of the reaction box is provided with a circular groove, and the lower end of the rotating shaft penetrates through the lower end of the reaction box and is fixedly connected with a disc. A cavity is disposed in the disc, a thermoelectric power generation piece is rotatably connected into the cavity through a cross rod, the side wall of the heating plate is connected with the top in the cavity through a heat conduction strip, a plurality of cooling fins are fixedly connected to the bottom in the cavity, and an electromagnet is embedded into the disc. Current is generated on the thermoelectric power generation piece, so that the electromagnet is electrified to generate magnetism, thepermanent magnet and the electromagnet repel each other, so that the electromagnet rotates forwards under the action of magnetic repulsion of the permanent magnet to drive the rotating shaft to rotate, and making the stirring rod to stir microorganisms in the reaction box, so that the microorganisms are uniformly heated and the reaction efficiency is accelerated.
Owner:HUZHOU YUEBIN INTELLIGENT TECH CO LTD
Thermostatic water bath provided with heating piece fixing device
InactiveCN104549598ATroubleshoot hard-to-fix problemsAvoid affecting the experimental resultsWater/sand/air bathsWater bathsEngineering
Owner:XIAN MINHAI ELECTRONICS TECH
Detection device and detection method for dot immunoblotting detection
PendingCN110068685AImprove concentrationAvoid affecting the experimental resultsLaboratory glasswaresBiological testingNitrocelluloseEngineering
The invention provides a detection device for dot immunoblotting detection. The detection device comprises a negative pressure suction device, a pore plate, a hose for connecting the pore plate and the negative pressure suction device, and a nitrocellulose membrane tightly fitting on an upper surface of the pore plate; the pore plate comprises an upper layer board, a lower tray hermetically connected to the lower side of the upper layer plate, and a negative pressure cavity arranged between the upper layer plate and the lower tray; a connecting pipe for the sleeving of the hose is arranged atone side of the lower tray, seventy through holes are formed on the upper layer plate, and the size of the nitrocellulose membrane is same as that of the upper end surface of the pore plate. The invention further provides a detection method for dot immunoblotting detection, the detection method comprises the processes of preparing, sample feeding, closing, incubating primary antibody, incubating second antibody, developing and analyzing; the negative pressure suction is performed through the negative pressure suction device, the sample centralization in the sample feeding is convenient, the condition that the experimental result is influenced by cross contamination after sample diffusion is avoided, and the experiment result is more accurate.
Owner:AFFILIATED HOSPITAL OF NANTONG UNIV
Experimental device and experiment method for breaking rock by means of ultrasonic waves
ActiveCN107036919AExtended service lifeAvoid affecting the experimental resultsMaterial strength using repeated/pulsating forcesUltrasonic generatorVibration transmission
The invention discloses an experimental device and experiment method for breaking rock by means of ultrasonic waves. The device is composed of an ultrasonic generator, a vibration system and a cooling system; the vibration system comprises a Langevin vibrator, a connecting piece and a fixing device; the cooling system includes a cooling cylinder, cooling liquid and a cooling groove; the connecting piece is fixed on the Langevin vibrator by a screw, the horizontal fixing device is installed on the wall of the cooling groove, and a rock sample is bonded to the lower end of the connecting piece through strong glue. The ultrasonic generator provides power to the Langevin vibrator and drives the Langevin vibrator to work, and after being converted by the Langevin vibrator, an input electrical signal stimulates the rock sample to vibrate so as to make the rock sample damaged and broken; after being electrified, the cooling system injects the cooling liquid in the cooling cylinder in a circulating mode to cooling the Langevin vibrator. By changing the size of the rock sample, the relationship of the rock breaking effect, ultrasonic power and ultrasonic frequency can be studied, the rock sample is connected with the Langevin vibrator through the connecting piece, the vibration transmission efficiency is high, the vibrator can be used repeatedly, and the service life is long.
Owner:CHINA UNIV OF MINING & TECH
Filter screen special for beaker
InactiveCN104623960AAvoid affecting the experimental resultsHanging stableStationary filtering element filtersEngineering
The invention discloses a filter screen special for a beaker. The filter screen is characterized in that: the screen body includes a lower screen ring, an upper screen ring, and hook columns disposed on opposite sides of the lower screen ring and the upper screen ring to fix the lower screen ring and the upper screen ring; the lower screen ring is provided with a plurality of buckles for buckling the filter screen; each hook column is equipped with at least one bulge for lap joint with the filter screen; and the distance between the lower screen ring and the upper screen ring accounts for 1 / 3 of the total beaker height. The filter screen special for the beaker provided by the invention has the advantages of simple structure, strong practicability, convenient use, safety and reliability, low cost and easy production, etc.
Owner:DALIAN NATIONALITIES UNIVERSITY
Microfluidic plane gradient coil of superconducting pulse nuclear magnetic resonance spectrometer, and mounting bracket of microfluidic plane gradient coil
ActiveCN109613459ALower the resistance valueFast switching speedMagnetic measurementsPulse nuclear magnetic resonanceCoaxial line
The invention discloses a microfluidic plane gradient coil of a superconducting pulse nuclear magnetic resonance spectrometer, and a mounting bracket of the microfluidic plane gradient coil. The gradient coil comprises a first gradient coil circuit board, a second gradient coil circuit board, a ground terminal and a series coaxial line; the two gradient coil circuit boards are mounted in a gradient coil groove of the bracket in a mirror symmetry mode and mutually connected in series to constitute a surface double-flat-plate structure, and the plane of a flat plate is parallel to the directionof a main magnetic field; and the two gradient coil circuit boards each have three layers. The mounting bracket comprises a bracket body and an upper cover plate, and the bracket body comprises a topdisc, a bottom disc and a connecting seat for connecting the top disc with the bottom disc. The microfluidic plane gradient coil is simple in structure, small in resistance value, high in efficiency and good in heat dissipation, and the mounting bracket can provide the sufficient microfluidic space to be matched with the gradient coil.
Owner:XIAMEN UNIV
Device for culturing plant experimental materials
ActiveCN107646441AImprove the experimental effectGuaranteed accuracyClimate change adaptationGreenhouse cultivationOxygenCulture mediums
The invention belongs to the technical field of plant physiology experiment, and discloses a device for culturing plant experimental materials. The device for culturing the plant experimental materials comprises an upper shell and a lower shell, wherein a culture medium is arranged in the shell. The device for culturing the plant experimental materials further comprises a water and liquid feedingmechanism, a carbon dioxide and oxygen releasing mechanism, an illumination regulating mechanism, a temperature regulating mechanism and a controller. A water and liquid feeding experiment, a carbon dioxide and oxygen releasing experiment, an illumination regulating experiment and a temperature regulating experiment can be performed respectively or simultaneously, and the device for culturing theplant experimental materials is also suitable for plant culture. The device for culturing the plant experimental materials has various functions, high intelligence and automation, high experimental convenience and high accuracy, and the performing of various plant culture experiments is achieved. Meanwhile, the device for culturing the plant experimental materials also has the advantages of simplestructure, convenient assembly and low manufacturing cost.
Owner:HEZE UNIV
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