Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

65results about How to "Guaranteed experimental results" patented technology

Simulation experimental method for dynamic effect of coal and gas outburst

InactiveCN104181282AImprove protection technology and equipment levelShort opening timeFuel testingProcess engineeringExperimental system
The invention discloses a simulation experimental method for a dynamic effect of coal and gas outburst. The simulation experimental method comprises the following steps: A, preparing a coal and gas outburst experimental system, wherein the system comprises a pressure container and a pipeline system which are fixed on the ground, a material inlet, an inflating hole and a sensor hole are formed in the pressure container, an outburst hole is formed in the pressure container, the outburst hole is connected with an explosion discharging device, the explosion venting device comprises a diameter variable pipe, a first bursting piece and a second bursting piece, whether the diameter variable pipe and the pressure container are inflated is controlled by a control chip according to the pressure intensity measured by the first sensor and the second sensor; B, filling coal particles into the pressure container from the material inlet; and C, gradually inflating the pressure container and the diameter variable pipe for increasing the pressure, and controlling the first bursting piece and the second bursting piece to be burst, so that the coal and gas outbursts. According to the simulation experimental method for the dynamic effect of the coal and gas outburst, the overall experimental effect of the dynamic effect is guaranteed to the maximal extent, and theoretical basis is provided for protecting and controlling the disaster of the coal and gas outburst.
Owner:CHINA COAL TECH ENG GRP CHONGQING RES INST

Automated mechanical arm stimulating device for animal memory training system

The invention relates to an automated mechanical arm stimulating device for an animal memory training system, which fundamentally solves the problems of excessive anthropic factor involvement and untimely and inaccurate stimulation of a stimulating system in the traditional maze device. The automated mechanical arm stimulating device comprises an orthogonal coordinate robot positioning system, a PLC (Programmable Logic Controller) system, a test mouse position detecting system and a stimulating system, wherein the orthogonal coordinate robot positioning system is established by adopting a rapid linear positioning mechanism; the test mouse position detecting system comprises four photoelectric thru-beam sensors which are respectively arranged at the door openings of the animal memory training system; the stimulating system comprises a mechanical arm with three pipelines; and the three pipelines respectively correspond to water, gas and food stimulation and respectively realize the supply of water, gas and foods by the PLC system. The automated mechanical arm stimulating device is used for more timely and accurately stimulating a test animal by matching with the animal memory training system formed by a closed rotary maze and ensures the test effect of the animal memory training system.
Owner:SHENYANG MEDICAL COLLEGE

Tensile fixture for plate type sample and using method thereof

PendingCN111948034APrevent the phenomenon of not clamping the sample tightlyGuaranteed experimental resultsStrength propertiesMaterials testingStructural engineering
The invention discloses a tensile fixture for a plate-type sample and a using method of the tensile fixture, the tensile fixture comprises an upper fixture and a lower fixture, and the end parts of the upper fixture and the lower fixture are respectively provided with a T-shaped notch matched with the end part of the tensile sample; at least two T-shaped clamping blocks which are matched with theT-shaped notch and used for clamping a tensile sample are detachably installed in the T-shaped notch, and pressing plates are installed on the two side faces of the T-shaped notch respectively. The using method of the tensile fixture comprises the step of respectively installing the upper fixture and the lower fixture in an upper chuck and a lower chuck of a universal material testing machine to carry out a tensile test. When the tensile fixture provided by the invention is used for carrying out a tensile test on a plate-type tensile sample, the tensile sample can be clamped and fixed withoutperforating the end part of the tensile sample, so that the phenomenon that the tensile fixture slips and cannot clamp the sample tightly due to long-time use can be effectively prevented, and the experimental effect of the tensile test is effectively ensured.
Owner:SHANGHAI UNIV OF ENG SCI

Method for preparing sample containing non-through cross joints

The invention discloses a method for manufacturing a sample containing non-through cross joints. The method comprises the following steps: arranging a T-shaped iron sheet in a sample preparation mold;pouring by adopting a gypsum material; after the initial setting of the rock-like sample is completed, removing the suspension clasp and the T-shaped iron sheet are removed, wherein a gap existing inthe rock-like sample is a non-through cross joint of the rock-like sample. According to the method, sheet insertion on a rock-like sample with certain strength is prevented; the problem of possible failure of sheet insertion is solved, multiple groups of cross joints can be prefabricated at the same time, the positions of the cross joints can be controlled by adjusting the positions of the suspension clasps, the strength uniformity of the manufactured rock sample containing the non-through cross joints is well guaranteed, and the experimental effect is guaranteed. The method is applied to thefield of preparation methods of rock-like sample.
Owner:WUHAN UNIV OF TECH

Flow field visual measurement experimental device based on matched index of refraction

The invention discloses a flow field visual measurement experimental device based on matched index of refraction. The device comprises a main loop system, a first cooling loop system, a second coolingloop system and a bypass branch. The bypass branch divides the main loop system into a first part and a second part, the first cooling system is located at the first part, the second cooling loop system is located at the second part, and the first part includes a liquid tank, a conventional centrifugal main pump and a main heat exchanger, the first cooling system also includes a main heat exchanger, the first cooling system takes away the heat generated by working of the conventional centrifugal main pump on fluid through the main heat exchanger so as to control the temperature of the main loop system, the second part includes an electromagnetic flowmeter and a test section, the second cooling loop system is set between the electromagnetic flowmeter and the test section, and the second cooling loop system is set for controlling the fluid temperature of the test section, and the bypass branch regulates the flow passing through the test section.
Owner:SHANGHAI JIAO TONG UNIV

Container-free ultramicro chemical reaction observation device

The invention relates to the field of chemical reaction devices, and in particular, relates to a container-free ultramicro chemical reaction observation device. The invention discloses the container-free ultramicro chemical reaction observation device composed of a base, a protective cover, a protective cover top cover, a reagent adding device, a cleaning device and a waste liquid collector. The protective cover is mounted on the base, the protective cover top cover is mounted at the top of the protective cover, a plurality of hole sites are formed in the surface of the protective cover top cover, and the hole sites are used for mounting the reagent adding device and the cleaning device; the waste liquid collector is arranged below the reagent adding device and the cleaning device and is used for receiving a reaction product or cleaned waste liquid. The chemical reaction observation device solves the problems that an existing chemical reaction observation device is poor in observationeffect and is not universally popularized in teaching. The device is simple in structure, low in cost, convenient to manufacture, easy and convenient to operate and convenient to popularize.
Owner:ZHAOQING UNIV

Simple small projectile launcher enabling projectile to obliquely enter water at medium and low speeds

The invention discloses a simple small projectile launcher enabling a projectile to obliquely enter water at medium and low speeds. The simple small projectile launcher comprises a guide rail, a spring, the projectile, strings, a fixing device and a baffle. The guide rail comprises a hollow cylinder part located on the front section and provided with double holes and a half hollow cylinder part located on the rear section, the spring is put in the hollow cylinder part on the front section, the upper half portion of the hollow cylinder on the rear section is hollowed out, and the lower half portion of the hollow cylinder on the rear section serves as a projectile movement rail. The strings are bound on the baffle and penetrate out of the small holes in the front end of the guide rail, the spring is put between the baffle and the guide rail, the fixing device is used for pressing the projectile on the guide rail, and the tail of the projectile makes contact with the baffle. The simple small projectile launcher has the beneficial effects that the device is simple, the operation is easy, disassembly is easy and convenient, speed variables can be controlled, and the cost is low.
Owner:NANJING UNIV OF SCI & TECH

Automated mechanical arm stimulating device for animal memory training system

The invention relates to an automated mechanical arm stimulating device for an animal memory training system, which fundamentally solves the problems of excessive anthropic factor involvement and untimely and inaccurate stimulation of a stimulating system in the traditional maze device. The automated mechanical arm stimulating device comprises an orthogonal coordinate robot positioning system, a PLC (Programmable Logic Controller) system, a test mouse position detecting system and a stimulating system, wherein the orthogonal coordinate robot positioning system is established by adopting a rapid linear positioning mechanism; the test mouse position detecting system comprises four photoelectric thru-beam sensors which are respectively arranged at the door openings of the animal memory training system; the stimulating system comprises a mechanical arm with three pipelines; and the three pipelines respectively correspond to water, gas and food stimulation and respectively realize the supply of water, gas and foods by the PLC system. The automated mechanical arm stimulating device is used for more timely and accurately stimulating a test animal by matching with the animal memory training system formed by a closed rotary maze and ensures the test effect of the animal memory training system.
Owner:SHENYANG MEDICAL COLLEGE

Bill number identification method and system based on deep neural network

The invention discloses a bill number identification method and system based on a deep neural network, and the method comprises the steps: sequentially carrying out the graying processing, binarization processing, normalization processing and two-dimensional image mapping one-dimensional data processing of an obtained two-dimensional mixed-shot bill original image, and greatly reducing the data size while maintaining the image information. Time waste caused by data transmission is reduced, and user experience is improved; by designing an OCTC model, introducing a one-dimensional convolution operation to perform feature extraction and image category calculation on image data, and using a plurality of small-size convolution kernels to increase a model receptive field, the experimental effect is ensured, the model parameter quantity is reduced, the effect of a lightweight model is realized, and storage and use by a user are facilitated; according to the method, the user can receive the judgment result of the number of bills in the image while uploading the image, the user experience of a mixed shooting bill recognition system is improved, meanwhile, the system is helped to carry out subsequent bill target detection and content recognition tasks, and real-time work of the system is achieved.
Owner:AEROSPACE INFORMATION

Absorption cell structure of medicine absorption sampling system

PendingCN110045071AEasy to optimizeIt is beneficial to conduct absorption experimentsTesting medicinal preparationsMagnetic effectAbsorption cell
The invention discloses an absorption cell structure of a medicine absorption sampling system. The absorption cell structure is characterized in that a permeation film is arranged at the center of theabsorption cell, a mother liquor cavity is formed on one side of the permeation film, and an absorption cavity is formed on the other side of the permeation film; a mother liquor outlet is formed inthe top of the mother liquor cavity, and a mother liquor inlet is formed in the bottom of the mother liquor cavity; a drainage hole is formed in the top of the absorption cavity, and a solvent entrance is formed in one side of the bottom of the absorption cavity. Via the magnetic effect, the stirrer is driven to rotate, so that the stirrer is rotated in the absorption cavity to simulate the bloodflowing in a human body, the experiment is facilitated, and the use effect is good.
Owner:LUGEN INSTR ZHENJIANG

Adherent cell scanning electron microscope carrier and preparation method

The invention discloses an adherent cell scanning electron microscope carrier which comprises a scanning electron microscope sample support (1). A base plate (3) of a tissue culture (TC) surface cell culture dish is fixed on the scanning electron microscope sample support (1) through an electric conduction adhesive layer (2), a cell layer (4) is coated on the base plate (3) of the TC surface cell culture dish, a conductive film (5) is arranged on the cell layer (4), and a conductive strip (6) is connected with the conductive film (5) and the electric conductive adhesive layer (2) in a crossed mode. According to the preparation method of the adherent cell scanning electron microscope carrier directly cultures cells by means of the TC surface cell culture dish, ethanol is replaced with tert butyl alcohol to be used as dehydrating agent, the adherent cell scanning electron microscope carrier is prepared by means of the base plate of the TC surface cell culture dish which is coated with the cell layer, and therefore, the adherent cell scanning electron microscope carrier and the preparation method have the advantages of being simple, rapid, convenient to use and the like.
Owner:FIRST AFFILIATED HOSPITAL OF DALIAN MEDICAL UNIV

Multi-cavity casing pressure test device and method

The invention discloses a multi-cavity casing pressure test device and method, the multi-cavity casing pressure test device comprises a base, a bottom cavity separation ring, a casing test piece and a cover plate, the casing test piece is a cylindrical thin-wall piece, the upper end face and the lower end face of the casing test piece are provided with outer boss surfaces extending in the horizontal direction, the outer boss surface of the lower end face is provided with a connecting hole, and the connecting hole is communicated with the bottom cavity separation ring. The connecting holes are used for being connected with a base, the base is of a disc structure, an annular protrusion is arranged on the base, the connecting holes are formed in the upper end face of the annular protrusion of the base, a bottom cavity separation ring is arranged on the base, and a cover plate is arranged above the bottom cavity separation ring. The testing device is compact in structure and easy to install and adjust, the pressure load can be accurately applied to all the cavities of the test piece through the testing device, and the purpose of checking the structural rigidity and the welding quality stability of the casing test piece in a cavity dividing mode is achieved. The device is high in universality, can be used for similar aero-engine case pressure tests, is wide in application range, and has high engineering application value.
Owner:AECC AVIATION POWER CO LTD

Cleaning light-resisting airing box for immunohistochemical stain experiment

The invention belongs to the technical field of bioexperiments, and particularly relates to a cleaning light-resisting airing box for the immunohistochemical stain experiment. The cleaning light-resisting airing box comprises an outer shell, a control panel, a hatching cleaning device, an airing device, a moisturizing layer and an electric plate layer, wherein the outer shell is a rectangular boxbody, the hatching cleaning device, the airing device, the moisturizing layer and the electric plate layer are arranged in the box body of the outer shell, the control panel is arranged on one side ofthe upper surface of the box body of the outer shell, a cover plate used for sealing and covering the box body is arranged adjacent to the control panel on the upper surface of the box body of the outer shell; an on-off key and a temperature and humidity regulating button are arranged on the control panel; a display screen is further arranged to display time, temperature and humidity. The cleaning light-resisting airing box integrates the three functions of resisting light, cleaning and airing, the probability of fluorescence quenching is reduced, the dust pollution is reduced, a sheet is prevented from cracking, the degree of cleanliness of the sheet is improved, and the experiment effect of the immunofluorescence is guaranteed.
Owner:FUDAN UNIV

A construction method and application of an anti-influenza virus or anti-inflammatory drug screening model based on living lung slices

The invention discloses an anti-influenza virus or anti-inflammatory drug screening model based on living lung slices, which is characterized in that it comprises the following steps: first infecting the living lung slices with the virus, and then applying the drug to be tested to the virus-infected Live lung slices, and finally verify the effect of the drug to be tested by detecting changes in virus titers and related cytokines. The invention also discloses a method for constructing the screening model, which includes: preparation of lung slices, optimization of thickness of lung slices, evaluation of the correlation between neuraminidase activity and virus titer, and selection of inflammatory factors. Through this invention, a drug screening method based on living lung slices is constructed, which is more accurate and effective than traditional cell models in line with real body conditions.
Owner:WUHAN INST OF VIROLOGY CHINESE ACADEMY OF SCI

Separation method of colonic intraepithelial lymphocytes

The invention discloses a separation method of colonic intraepithelial lymphocytes (IEL). The separation method comprises the following steps: carrying out euthanasia on a mouse; pulling out a whole large intestine from an ileocecal region to a rectum position and transversely cutting; putting the intestine into a small culture dish; putting the intestine into 20ml of IEL isolation buffer; pre-heating in a water bath to 37 DEG C and cutting the intestine into small sections with the length of 4mm-5mm; putting the intestine sections into 60ml of the IEL isolation buffer; stirring tissues in the IEL isolation buffer for 30min; filtering intestine extract by a filtering system; washing a beaker by 20ml of RPMI 1640 containing glutamine; filtering a washing solution and sub-packaging IEL extract into two 50ml plastic tubes; and taking an obtained sediment dyed flow antibody. The method disclosed by the invention has the characteristics of convenience in operation, time saving and labor saving, and is suitable for popularization and application.
Owner:THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV

Water-phase method for preparing surface modified functional cadmium sulfide ultrafine particles

The invention discloses a water-phase method for preparing surface modified functional cadmium sulfide ultrafine particles, which belongs to the technical field of cadmium sulfide preparation method. According to the method, cadmium nitrate and sodium sulfide are adopted as raw materials, and mercaptoacetic acid is adopted as a modifying agent. An experiment method comprises the steps that: a cadmium nitrate solution is continuously stirred, and mercaptoacetic acid is gradually dropped in; when mercaptoacetic acid addition is finished, a reaction is sufficiently carried out for a period of time; the pH value is regulated by using a sodium hydroxide solution, such that the mixture is alkaline; when solution pH value is stable, nitrogen is delivered in for removing oxygen; a sodium sulfide solution is gradually dropped in; the mixture is heated and the temperature is controlled, and the mixture is sufficiently stirred for a period of time, such that a final CdS / -SCH2COOH sample is obtained. According to the water-phase method for preparing surface modified functional cadmium sulfide ultrafine particles, during the preparation process, cadmium sulfide ultrafine particle surface functionalizing can be directly realized. The process flow is simple, and the reaction is easy to operate. The method is a high-efficiency functional cadmium sulfide ultrafine particle preparation method.
Owner:GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG +1

Multifunctional needle for experimental animal ear margin intravenous injection dosing transfusion and fixing

The invention provides a multifunctional needle for experimental animal ear margin intravenous injection dosing transfusion and fixing. The needle comprises a transfusion pipe, a three-way adjusting valve and a needle tube. One end of the transfusion pipe is provided with a syringe, a fixing clip is arranged on the syringe, the three-way adjusting valve is installed in the transfusion pipe, and three channels of the three-way adjusting valve are connected with the front section and the rear section of the transfusion pipe and the needle tube respectively. The multifunctional needle can achieve ear margin intravenous injection dosing, anesthesia, transfusion and fixing of experimental animals, achieves firm fixing, can conduct injection dosing, anesthesia and transfusion simultaneously without pulling and inserting the syringe for multiple times, enables an experiment to go on wheels and ensures experiment effects.
Owner:SHANDONG UNIV

Quantitative filling test tube

The invention discloses a quantitative filling test tube. The test tube comprises a test tube body. The test tube body comprises a cylindrical glass tube. The lower part of the glass tube is an arc bottom. The radian of the arc bottom is 2.14. The top of the glass tube is provided with a filling pipe. A plug is arranged in the top end of the filling pipe. The filling pipe is a cylindrical pipe. The bottom of the filling pipe is provided with a tapered bottom, and the radian of the tapered bottom is 1:1.36. The lower end of the filling pipe is sleeved in the glass tube. A rubber sealing ring is arranged between the external wall of the filling pipe and the internal wall of the glass tube. The quantitative filling test tube has the advantages that the shortages of prior art can be overcome, and the structural design is reasonable and novel.
Owner:JIANGYIN ZHENGZHONG SCI & EDUCATION EQUIP

Preparation method for smooth flat soft thin layer

The invention provides a preparation method for a smooth flat soft thin layer. The method comprises the following steps: heating mixed liquor of agar or gelatin and water and carrying out full stirring so as to form a prepared solution; evenly spreading a heatproof thin film on the surface of horizontally-arranged smooth flat glass with a temperature of 40 to 60 DEG C; disposing a bounding frame onto the surface of the heatproof thin film; slowly dumping the prepared solution into the interior of the bounding frame; cooling the prepared solution so as to form a soft thin layer; taking the bounding frame down, separating the heatproof thin film and the soft thin layer from the glass and tearing down the heatproof thin film adhering to the soft thin layer; etc. The preparation method for the smooth flat soft thin layer in the invention has the advantages of simple steps, a reasonable design and convenient operation; the prepared product is smooth and flat, capable of guaranteeing experimental effects.
Owner:CIVIL AVIATION UNIV OF CHINA

Method for preparing honeycomb molecular sieve adsorbent from red mud

The invention discloses a method for preparing a honeycomb molecular sieve adsorbent by using red mud; the honeycomb molecular sieve adsorbent is prepared from the following raw materials: molecular sieve raw powder, water, red mud, an organic auxiliary agent, anti-crack glass fiber and citric acid, and the honeycomb molecular sieve adsorbent is obtained by mixing, pugging, extrusion forming, drying and roasting the raw materials. The red mud solid waste is recycled, meanwhile, the adsorbent has the advantages of being high in strength, large in adsorption capacity and good in regeneration effect, the adsorbent can be used for industrial VOCs adsorption, the production cost is reduced, meanwhile, a large amount of red mud can be fully recycled, no residues exist after roasting, the adsorption performance is not affected, the product quality is improved, the fracture toughness of the honeycomb zeolite adsorbent is improved, and the integrity of the adsorbent is ensured.
Owner:山东亮剑环保新材料有限公司

Molecular hybridization instrument and application method thereof

The invention discloses a molecular hybridization instrument and an application method thereof. The molecular hybridization instrument comprises a rack body, wherein a suction head placing part, a sample placing part, a reaction part, a control manipulator and a manipulator movement driving mechanism, wherein the reaction part is provided with a rotary bin and a reaction bin, the rotary bin is rotatably arranged in the rack body, the reaction bin is arranged in a placement cavity of the rotary bin, and the reaction bin is provided with a reaction cavity; and the control manipulator is providedwith a suction head operating mechanism, a liquid adding and liquid discharging operating mechanism and a control mechanism, the control manipulator is provided with a suction head mounting station,a sample liquid sucking station as well as a sample liquid injecting station and a liquid adding and liquid discharging station which are respectively corresponding to the suction head placing part, the sample placing part and the reaction part. The molecular hybridization instrument disclosed by the invention is reasonable in structural design and smaller in volume and can be used for carrying out an experiment of detecting more samples, and time required by the experiment is shorter and experiment effect is better.
Owner:GUANGZHOU LBP MEDICINE SCI & TECH

Coal discharge method at the bottom of the two-dimensional similar material test bench

The invention discloses a method for putting coal at the bottom of a two-dimensional similar material test bench. The specific steps are as follows: S1: Connect the fixing holes on the front and rear sides of the bottom of the two-dimensional similar material test bench with support brackets, and place between the two support brackets Install multiple sets of coal discharge turning devices, and then lock the locking device; S2: The channel steels are respectively located on the corresponding support brackets, and the experimental similar materials are placed on the coal discharging turning devices; S3: Wait for the similar experimental materials to solidify and then remove the front groove Steel, excavate a coal seam of a certain width at one end of the two-dimensional similar material test bench, and then seal the front side of the similar material for the test with transparent plexiglass; S4: Open the locking device, and use a wrench to lock it on the rotating shaft in the coal turning device Coal discharge steel plate, the coal discharge steel plate of this application can control the size of the coal discharge opening, and can be closed immediately and quickly after coal discharge, thus effectively preventing the lateral leakage of top rock model debris and ensuring the experimental effect.
Owner:DALIAN UNIV

Portable DC motor experiment box

The invention provides a portable DC motor experiment box which comprises a box body as well as an instrument main panel, a controller, an A / D (analog to digital) conversion unit, a power supply, a switch unit, a DC meter unit, an adjustable resistor unit, a motor, a velocity measurement unit, a camera unit, a keyboard and an LCD. The DC motor experiment box has the following advantages: the box is small in size and light in weight, is convenient to move and carry and can be used in occasions with 220V AC, such as a laboratory, a classroom and the like; the box is convenient to maintain, and the experimental box is designed by adopting a general purpose instrument, so that a user can purchase and change the general purpose instrument conveniently; the box is low in price and small in occupied space, the experimental effect of every students is ensured is easily achieved in a way that one person is included in one group in an experiment process; the box has the functions of protection and early warning, and the experimental box has the functions of audible and visual warning and protection for electric leakage, overcurrent and overvoltage, so that the electric shock of a staff in anexperiment and the damage of a module can be prevented; a teacher can monitor, play back and evaluate the experiment process of every student conveniently; the teacher can query and check data of theexperiment process conveniently, so that the students can be prevented from plagiarizing each other.
Owner:CIVIL AVIATION UNIV OF CHINA

Rapid bacillus concentration detection device

The invention discloses a rapid bacillus concentration detection device which comprises a bottom plate, wherein a driving device is fixedly connected with the left side of the top of the bottom plate;a heating device is arranged at the top of the driving device; the driving device comprises an air cylinder; a piston is connected with the inner cavity of the air cylinder in a sliding manner; a moveable rod is fixedly connected with the top of the piston through a fixing part; and the top of the moveable rod penetrates through the driving device, extends to the inner cavity of a heating deviceand is fixedly connected with a push plate. Due to cooperation of the driving device, the heating device, a liquid outlet tube, a first liquid discharge tube, a second liquid discharge tube and a third liquid discharge tube, the rapid bacillus concentration detection device achieves an effect of sampling bacillus for multiple times, solves the problem that a conventional bacillus concentration detection device cannot take samples for multiple times, improves the accuracy of bacillus concentration detection, and thus ensures experiment results of bacillus concentrations.
Owner:JIANGSU UNISON BIOTECH DEV

Precision compressor for purification production and processing of ultra-pure element via adsorption method

The invention provides a precision compressor for purification production and processing of an ultra-pure element via an adsorption method. The precision compressor comprises a box body, wherein a purification mechanism and a backflow mechanism are arranged in the box body, a purification cylinder of the purification mechanism is arranged in the box body, a purity monitoring instrument of the backflow mechanism is arranged in the purification cylinder, the number of backflow pipes is two, each backflow pipe is provided with a one-way valve, and the other ends of the two backflow pipes separately communicate with a control box. According to the invention, the backflow mechanism is arranged in the box body, and the purity monitoring instrument is arranged in the backflow mechanism; when a small amount of gas which is not completely purified flows out of an adsorption box, the purity monitoring instrument controls an electromagnetic valve to be closed, the one-way valves on the backflow pipes are opened at the same time, and gas which does not reach the standard enters the control box from the backflow pipes and is subjected to adsorption and impurity removal again until the gas completely reaches the standard; and thus, the situation that a small amount of gas is blended into a collecting device is avoided, so purification accuracy is ensured, and experiment effect is ensured.
Owner:PERIC SPECIAL GASES CO LTD

Reaction Chamber and Molecular Hybridization Instrument

The invention discloses a reaction chamber and a molecular hybridization instrument. The reaction chamber includes a plurality of unit chambers arranged in parallel, each unit chamber has an independent reaction chamber, the reaction chamber is vertically arranged, and the reaction chamber The upper part of the chamber is provided with multiple sets of elastic injection ports and air pressure balance ports. The injection ports and air pressure balance ports are in a closed state in a natural state. Each unit chamber corresponds to a group of elastic injection ports and air pressure balance ports. The reaction chamber of the present invention can be applied to a molecular hybridization instrument, which reduces the volume of the molecular hybridization instrument and saves working space. And the setting of the air pressure balance port can ensure the balance of the reaction chamber air pressure. The injection port and the air pressure balance port are in a closed state in a natural state, which ensures that the liquid in the reaction chamber flows out or overflows when the reaction chamber is rotated, ensuring that the molecular hybridization The instrument can perform experiments and reactions better.
Owner:GUANGZHOU LBP MEDICINE SCI & TECH

System for testing melting point of magnesium metal

The invention relates to the technical field of metal material experimental devices, provides a system for testing the melting point of magnesium metal, and aims to solve the problems that in the existing magnesium metal melting point testing system, the environment variables are difficult to control, the state of the magnesium metal cannot be visually monitored in real time in testing process, and the real-time relation between the temperature and the weight of the magnesium metal cannot be established. The system comprises a hollow box body and a box door embedded in the front wall of the box body, a heating mechanism is arranged on the top wall of the box body, and a gas circulation mechanism is arranged above the heating mechanism; a weighing mechanism is arranged in an inner cavity of the box body, the heating mechanism comprises a heating furnace wall vertically installed on the top wall of the box body, a cylindrical quartz furnace cavity is vertically formed in the heating furnace wall in a penetrating manner, and the outer side of the annular side wall of the quartz furnace cavity is sleeved with a heating pipe. The system is particularly suitable for accurately testing the melting point of the magnesium metal, and has higher social use value and application prospect.
Owner:合肥科晶材料技术有限公司

Thermostatic impregnation device used for laboratory

The invention discloses a thermostatic impregnation device used for a laboratory. The thermostatic impregnation device comprises a thermostatic oven and a rotary drum, wherein a left rotating shaft and a right rotating shaft are respectively and fixedly arranged at two ends of the rotary drum and rotatably connected with a support; the rotary drum and the support are arranged inside the thermostatic oven; the support is connected with and fixedly arranged at the bottom part of the thermostatic oven; the right rotating shaft penetrates through the side wall of the thermostatic oven and is rotatably connected with the side wall of the thermostatic oven; the right end of the right rotating shaft is fixedly connected with the output shaft of a motor; and the motor is fixedly arranged on and connected with the side wall of the thermostatic oven. When an impregnation experiment is performed, a sealed impregnation container filled with an impregnation solution is fixedly arranged inside the rotary drum; the door of the thermostatic oven is closed; the temperature of the interior of the thermostatic oven is set; the motor is started and drives the rotary drum arranged in the thermostatic oven to rotate; thus, the impregnation solution can be experimented under the conditions of a constant temperature and continuous and uniform shaking, so experimental effects can be effectively guaranteed, and the accuracy of experimental data is improved.
Owner:河南永大化工科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products