67results about How to "Realize automatic sample injection" patented technology

The invention provides an automatic cigarette smoke analysis device which comprises a smoking machine main body, an igniter lifting mechanism, igniters, a six-joint robot, a Cambridge filter disc catcher supply mechanism, a cigarette sample supply mechanism, a Cambridge filter disc catcher sealing cover supply mechanism, a sealing cover covering mechanism and an analytic balance, wherein the six-joint robot is arranged in front of the smoking machine main body, cooperates with the Cambridge filter disc catcher supply mechanism, the cigarette sample supply mechanism, the Cambridge filter disc catcher sealing cover supply mechanism, the sealing cover covering mechanism and the analytic balance to analyze and process cigarette smoke. According to the automatic cigarette smoke analysis device provided by the invention, automatic sample introduction of the Cambridge filter disc catchers can be achieved effectively, cigarette samples are introduced and mounted automatically, the Cambridge filter disc catchers are weighed automatically, ignition is performed synchronously at all aperture passages, and all Cambridge filter disc catchers are covered with sealing covers automatically, so that the work efficiency is high and meanwhile the accuracy of analysis results is guaranteed.

The invention discloses an automatic single sample introduction device of a blood cell analyzer. The automatic single sample introduction device mainly comprises a transverse feed mechanism fixed on the blood cell analyzer, a longitudinal feed mechanism fixed on the transverse feed mechanism, a sampling mechanism fixed on the longitudinal feed mechanism, and a rotary sample introduction mechanismwhich is positioned below the transverse feed mechanism and fixed on a rack of the blood cell analyzer. Compared with the prior art, the device has the advantages that: by arranging the rotary sampleintroduction mechanism, a test tube is inserted into a test tube placing hole on a sample introduction base after manual uniform mixing to realize automatic introduction of a single blood sample and a test tube cover does not need to be taken down manually, so that a sampling needle can be totally isolated from the hand of people, and potential hazard of possibly puncturing the hand can be avoided during the conventional single blood sample test; moreover, the device can be operated more safely and easily; and the sampling mechanism can move in the horizontal and vertical directions, so the sampling needle is positioned more flexibly. The whole sample introduction device has a simple structure and high automation degree.

The invention relates to an automatic gas sampling device and a using method thereof. The device provided by the invention comprises a shell, wherein the shell is internally provided with a gas channel system and a circuit system; the gas channel system comprises a first electromagnetic valve, a second electromagnetic valve, a pressure sensor, a tee joint, a six-way valve and a vacuum pump; the circuit system comprises the first electromagnetic valve, the second electromagnetic valve, the pressure sensor and a computer; the first electromagnetic valve and the second electromagnetic valve are electrically connected with the I / O (input / output) switch control unit of the computer; and the pressure sensor is electrically connected with the analogue / digital converter of the computer. The gas automatic sampling device provided by the invention can be widely applied to automatic sampling for gas chromatograph analysis of gas samples, prevents the pollution of environment on tested sample gases, and effectively improves the utilization ratio of sample gases and analyzing instruments.

The invention discloses a sample introduction method and a sample introduction device for microfluidics detection of a fish-farming water environment. Two ends of a tank body are respectively connected with an A end extrusion pump and a B end extrusion pump, and a 10 mum level filter screen is arranged in a space between the A end extrusion pump and the B end extrusion pump in a cavity of the tank body. A sample introduction channel is connected with a microfluidics device outside the tank body, the top of the tank body is connected with a magnetic stirring and pumping pressure conveying structure through a sample channel, an original water sample in the fish-farming water environment can be automatically and fully stirred, cluster materials including cenobium and the like in the water sample can be automatically dispersed, and extrusion pumps at two ends are respectively extruded according to a certain sequence. After the dispersed sample is automatically guided in through a push type sample introduction mode, the introduced sample is filtered, the processes from sample dispersing, sample filtering, sample introduction to the filter screen cleaning can be completed in a full automation mode, the microfluidics detection is guaranteed to be carried out smoothly, and the degree of automation is high.

The invention discloses a microfluidic cell culture chip guaranteeing uniform cell distribution and a cell sample introduction method. A main flow channel and auxiliary flow channels which are cross and vertical to the main flow channel are formed in a substrate, each auxiliary flow channel is a step-shaped flow channel which is granularly widened from the outer end to the middle, and the bottom surfaces of the auxiliary flow channels are higher than the bottom surface of the main flow channel; firstly, a culture solution is injected into a culture chamber, a cell suspension solution is injected into the culture chamber after the bottom of the culture chamber is filled with the culture solution, the culture solution is injected into the main flow channel after a certain quantity of the cell suspension solution is injected into the main flow channel, the culture solution pushes the injected cell suspension solution to the culture chamber, mixed gas enters buffer zones on two sides of the culture chamber through the auxiliary flow channels, the bottom of the culture chamber in the middle of the main flow channel is enabled to be filled with the cell suspension solution while the other space of the main flow channel is filled with the culture solution, therefore, cells are just distributed at the bottom of the culture chamber, no cells remain in the non-culture-chamber zone, and the cells are uniformly distributed at the bottom of the culture chamber.

The invention relates to the field of in-vitro quantitative detection and particularly relates to an in-vitro quantitative detection instrument. The in-vitro quantitative detection instrument comprises a sample feeding device, a uniform-shaking uncovering device, a kit conveying device, an incubation and detection assembly and a mechanical arm, wherein the uniform-shaking uncovering device is arranged close to the sample feeding device and is used for uncovering, uniformly shaking and covering a sample test tube conveyed by the sample feeding device; the kit conveying device comprises a plurality of kit storage assemblies and a kit conveying mechanism; and the mechanical arm is connected with a liquid suction needle group and can be used for conveying the liquid suction needle group to thesample feeding device, the kit conveying device and the incubation and detection assembly. By arranging the uniform-shaking uncovering device, the whole in-vitro quantitative detection instrument canbe automatically uncovered, covered and uniformly shaken and does not need to be manually uniformly shaken and uncovered, so that the automation level is increased. By arranging the sample feeding device, the kit conveying device and the mechanical arm, the automatic sample feeding, adding and detection of the sample test tube can be realized.

The invention discloses a combustor with adjustable combustion atmosphere and an experimental method and belongs to the technical field of fuel combustion. The device comprises a combustion chamber, aliquid fuel sample injection mechanism, a powder fuel sample injection mechanism, a powder dispersion mechanism, a blocky fuel lifting platform and a water vapor generation device, fuel combustion experiments in three different states are achieved through the three feeding mechanisms, boron particles can be dispersed through a powder dispersing mechanism in the powder fuel sample feeding mechanism, the falling speed of the boron particles is reduced, the influence of incoming air flow on the ignition and combustion process of the boron particles is reduced, and combustion efficiency is improved; reliable ignition of the boron particles in a relatively dispersed state can be realized. The steam atmosphere is provided through the steam generation device, the steam concentration in the combustor is monitored in real time in cooperation with the humidity sensor, and quantitative regulation and control over the steam concentration in the combustor can be achieved; the combustor is connected with high-pressure gas sources such as nitrogen, oxygen and argon, and the purpose that the concentration and pressure of various atmospheres in the combustor are adjustable is achieved in cooperation with real-time monitoring of the pressure sensor.

The invention provides a turbidity meter. The turbidity meter comprises a sample tank, a light source and a detector and a control system, and further comprises a heating system and a cooling system, wherein the light source and the detector are fixed on the two sides of the sample tank respectively; the control system is used for controlling the light source and the detector; the heating system is used for heating a sample to be heated; the heating system comprises a heating furnace for providing a sealed space and storing the sample tank; the heating furnace is further provided with an optical window for allowing light to pass through; the sample tank comprises a sample tank main body made of a high-temperature-resisting and corrosion-resisting material, and a window plate which is made of a high-temperature-resisting and corrosion-resisting material and through which visible light and near-infrared light pass; and the window plate is aligned to the optical window. The turbidity meter provided by the invention is additionally provided with the heating system and the cooling system, and the matched and designed sample tank, so that the turbidity of a sample with the temperature more than 200 DEG C and having corrosion is metered; and the turbidity meter has the advantages of good safety, strong operability, wide applicable range and the like.

The invention relates to an ammonia nitrogen detection method and an ammonia nitrogen detection device based on electrodialysis ion transformation. Through a polarization principle of electrodialysis, pure water is electrolyzed to generate alkaline electrolytic water so as to replace the effect of a sodium hydroxide solution, thus achieving transformation of ammonium ions in a sample solution. The ammonia nitrogen detection device comprises an anode compartment electrodialysis cell, a cathode compartment electrodialysis cell, an electromagnetic valve, an injection pump and a detection tank, wherein two electrode compartments of the anode compartment electrodialysis cell and the cathode compartment electrodialysis cell are separated by a cation exchange membrane; cation exchange resin and an anode electrode are arranged inside the anode compartment; anion exchange resin and a cathode electrode are arranged inside the cathode compartment. The ammonia nitrogen detection method comprises the following steps: electrolyzing by the electrodialysis device by using an electrolytic cell with the two electrode compartments; after electrolysis, transferring a certain volume of alkaline electrolytic water to the detection tank, mixing the electrolytic water with a water sample to be detected according to a proportion, and ensuring that the pH of the mixed water sample is higher than 11 to meet an alkalization need; detecting by using an ammonia-sensitive electrode to obtain the ammonia nitrogen content value of the water sample to be detected. Chemical reagents are not required, and alkaline electrolytic water can be continuously generated only by using electrical energy and pure water, so that environment pollution and secondary pollution are avoided.

The invention discloses an automatic sample pretreatment system which comprises a mounting frame, and a horizontal conveying mechanism, a clamping mechanism, a safety protection mechanism, a vertical lifting mechanism, a weighing and filling mechanism, a sample frame transmission device, a mixing device, an automatic cover opening and closing transfer mechanism and a bar code scanner are arranged on the mounting frame. According to the invention, the whole-support or single-support automatic sample injection of a sample can be realized, and the sample can be added at any time in the sample injection process, so that the operation flexibility of medical personnel is improved; transferring, weighing, filling, uniform mixing and sample adding of samples can be achieved, and the pretreatment efficiency and consistency are improved; in the filling process, standardized addition can be performed according to a weighing result, so that errors caused by manual sample size evaluation are effectively solved, and the sample digestion effect is improved; and by adopting the uniform mixing device capable of improving the homogenization treatment effect of the non-liquid sample, the uniform mixing effect is enhanced.

The invention provides a horizontal large-volume sampling system and method for gas chromatography. The horizontal large-volume sampling system for gas chromatography includes a total flow control valve, a septum nut and a septum, a septum purge control valve, Diverter valve, diverter outlet control valve, liner, column nut and gasket, chromatographic column, temperature control module, characterized in that the liner is a double-cone splitless liner, placed horizontally, that is, parallel to the ground Placement, the positions of septum nut and septum, column nut and seal, chromatographic column, and temperature control module are also changed accordingly. The horizontal direction is from front to back: septum nut and septum, liner, column nut and a sealing gasket and a chromatographic column, and a temperature control module wraps the liner laterally; the gas chromatography large-volume sampling method is applied to the large-volume sampling system. It overcomes the technical prejudice that the liner is placed vertically, and effectively solves the technical problem that the solution entering the liner easily flows out from the immersed tube under the action of gravity.

The invention provides a method for detecting an alprostadil freeze-dried lipid emulsion. The method comprises the steps: 1) adding water to the alprostadil freeze-dried lipid emulsion, and re-dissolving to obtain a sample aqueous solution; 2) demulsifying the sample aqueous solution obtained in the step 1) with a demulsifier, to obtain a demulsified sample solution, wherein the volume ratio (ml:ml) of the demulsifier to the sample aqueous solution is 5:1-5:6; and 3) determining the contents of alprostadil and prostaglandin A1 in the demulsified sample solution obtained in the step 2) by high performance liquid chromatography, wherein the demulsifier is composed of an organic solvent A and an organic solvent B, the organic solvent A is selected from the group consisting of alcohols, and the organic solvent B is selected from the group consisting of alkanes or tetrahydrofuran. The method for detecting the alprostadil freeze-dried lipid emulsion has the advantages of high recovery rate and accurate measurement results, enhances quality detection standards of the alprostadil freeze-dried lipid emulsion, reinforces the quality controllability of drugs, thereby ensuring the effectiveness and the safety of clinical medication.

The invention relates to an automatic sample injection system for greenhouse gas. The system comprises a control device, a relay, an input device, a solenoid valve, a gas sample injection device, a gas washing device, a quick connection port, a plurality of groups of culture devices and a power source. The culture devices, the gas sample injection device, and an external detector are connected bymeans of non-detachable connection in multi-times sample injection detection of the whole process to keep the high airtightness of the culture devices in the multi-times sample injection detection process. With a water-proof and drying device, the dryness is ensured. Besides, a plurality of synchronous expansion ports are designed and electrical equipment is added based on the experimental requirements, so that the high scalability is realized; automatic sample injection is realized by controlling the multiple groups of culture devices in the lab and an NAND gate system protection program is employed to control a gas washing solenoid valve to prevent the blocking risk of the external detector, thereby realizing protection of the external detector; and the whole system is capable of realizing indoor culturing of the lab and in-situ batched real-time, accurate automatic greenhouse gas injection in the laboratory, so that the workload of the experiment staff is reduced substantially.

The invention provides a sampling device based on induction electrospray and a mass spectrometry method. The sampling device based on the induction electrospray comprises at least two spray needles, wherein each spray needle comprises a capillary tube, an electrode and a distance adjusting member for adjusting the distance between the electrode and the capillary tube; a first driving unit for driving at least two spray needles to translate; a power supply electrode for connecting an external power supply; a second driving unit for driving the power supply electrode to translate in the direction parallel to the extending direction of the spray needles to enable the power supply electrode to contact and break away from electrodes in the spray needles. The device has the advantages of simplestructure, high detection efficiency and the like.

The invention belongs to the technical field of biomedical detection and relates to a micro-fluidic chip for detecting a human whole blood sample and a detection method. The chip is mainly composed ofvarious functional areas of a paper base (7), a sample injection component (2) and sample separation components (6). The chip is characterized in that the chip (1) is disc-shaped; the chip (1) is provide with the paper base (7), a chip substrate (9) for placing the paper base (7) and a sealing film (8) arranged on the paper base (7); a circular hole is formed in the circle center of the chip (1);the sample injection component (2) is arranged in the circular hole; more than two sample treatment areas (3) are uniformly and symmetrically arranged around the sample injection component (2) alongthe diameter extension lines of the sample injection component (2); the outlet of each sample treatment area (3) is connected with one sample separation component (6) along a diameter extension line;each sample separation component is connected with a detection area (5); and more than two screw holes (4) are formed in the chip (1) in the direction of the diameter extension lines so as to be usedfor fixation.

The invention relates to a multi-channel microfluidic chip detection device for vacuum negative pressure sample injection and a preparation method and application. The multi-channel microfluidic chipcomprises a main channel, a sample loading channel, a filter membrane, an optical transparent layer etched with a microchannel, and an optical transparent layer not etched with the microchannel; theoptical transparent layer etched with the microchannel is bonded and connected with the optical transparent layer not etched with the microchannel; the main channel and the sample loading channel arein negative pressure states; the filter membrane is located at the upper part of the main channel and bonded with the optical transparent layer etched with the microchannel and the optical transparentlayer not etched with the microchannel. The detection device disclosed by the invention has a small amount of samples and can realize automatic sample injection of the samples, 100% separation of blood cells and plasma of a whole blood sample, and seamless docking between the sample loading channel and a paper chip, so that separation and detection steps can be completed simultaneously.

The invention discloses a sample injection method and device for a digital micro-fluidic chip. The sample injection device of the digital micro-fluidic chip mainly comprises a sample injection pressure head (1) and a driving mechanism (6) for driving the sample injection pressure head to move. And the sample injection pressure head (1) is used for injecting a reagent pre-embedded in the chip (12) into the chip (12). And the driving mechanism (6) is used for controlling the sample injection pressure head (1) to move so as to realize automatic sample injection. The sample injection mode has the advantages of high sensitivity, high accuracy, high flux, high integration level and the like, cross contamination is avoided in the whole process reaction, one-key operation can be achieved, and the two hands of an operator are greatly liberated.

The invention relates to a fast-temperature-rise microfluidic chip system, which comprises a chip, a support frame, a two-dimensional regulating platform and an injection pump, wherein the chip comprises a substrate, a cover sheet, an electromagnetic valve, a refrigeration device and a heating device; the substrate is provided with a microfluidic passage; a constant-temperature liquid storage region, a temperature jumping region and a test region are sequentially formed in the microfluidic passage; the cover sheet covers and seals the substrate; the electromagnetic valve is communicated with the microfluidic passage; the refrigeration device is arranged in a way of being tightly attached to the constant-temperature liquid storage region of the substrate; the heating device is arranged in a way of being tightly attached to the temperature jumping region of the substrate; the test region is exposed in the irradiation of synchronous radiation light for performing test; the support frame is used for installing and fixing the chip; the two-dimensional regulating platform is used for regulating the position of the support frame and comprises a horizontal position regulating module and a vertical position regulating module; the injection pump is provided with a body and a first valve opening connected with the body; the valve opening is communicated with the microfluidic passage of the chip. The chip system provided by the invention can realize the fast temperature pumping of a solution sample, and is used for synchronous radiation reaction dynamic study.

The invention discloses a feeding mechanism. The feeding mechanism comprises a sample feeding disc which is driven by a motor to rotate, a plurality of sample holes are formed along the circumferenceof the sample feeding disc; a purging device is arranged under the circumference of the sample feeding disc; the purging device comprises a valve body and a valve rod capable of moving in the valve body. The valve rod is provided with a sample containing groove, and the valve body is sequentially provided with a first groove position used for allowing the valve rod to achieve sample feeding at thesample feeding position, a sixth groove position used for allowing the valve rod to achieve sample purging at the purging position and a fourth groove position used for allowing the valve rod to achieve sample falling at the sample falling position. The purging device of the feeding mechanism realizes movement of a sample among three positions including the sample feeding position, the purging position and the sample falling position, realizes automatic sample feeding, zero-blank purging and automatic sample falling, solves the problems of large noise, large fluctuation and easiness in sampleblockage of a sample feeding disc, and also solves the problem that air interferes with particles entering a combustion chamber to pollute a reaction environment.

The invention discloses a photoelectrochemical cell and its auxiliary device. It consists of two parts, the photoelectrochemical reaction cell and the auxiliary device. The photoelectrochemical cell and its auxiliary device can realize the combined use of an electrochemical workstation and a fluorescence spectrometer to realize in-situ detection of the intensity and wavelength of electrochemiluminescence. This device creatively connects the electrochemical workstation and the fluorescence spectrometer, utilizes the advantages of the fluorescence spectrometer detector to distinguish the wavelength, improves the wavelength resolution ability of the electrochemiluminescence, and is beneficial to the optical behavior research of the electrochemiluminescence material; and overcomes the The limitation that the fluorescence spectrometer is only used for photoluminescence expands the application of the fluorescence spectrometer in electroluminescence.

The invention discloses a self-headspace gas chromatography sample injector. The self-headspace gas chromatography sample injector comprises a control system, a gas path system, a positioning system and a bottom plate, wherein the control system includes a control panel and a single chip microcomputer, and the control panel is connected with the single chip microcomputer through a flat cable; thepositioning system includes a sample disc, a gear disc, a motor, an air cylinder, an air cylinder arm, a middle shaft rod and a side shaft rod; and the gas path system includes a three-way needle inlet valve, a three-way needle withdrawing valve, an air pressure stabilizing valve, a two-way gas inlet valve, a flow limiting filter, a six-way sample inlet valve, a two-way gas outlet valve, a three-way exhaust valve, a vacuum pump and a sample inlet needle. Automatic self-headspace sample injection of a gas sample can be realized by combining with gas chromatography.

The invention belongs to the technical field of biomedical detection, and relates to a combined diagnosis paper-base micro fluidic chip, and a preparation method thereof. The combined diagnosis paper-base micro fluidic chip is mainly composed of a plurality of function zones of a paper base (7), a sampling part (2), and sample dividing parts (6); the combined diagnosis paper-base micro fluidic chip (1) is designed to shape like a disc, the disc is provided with three layers including the paper base (7), a chip base sheet (9) used for placing the paper base (7), and a sealing film (8) which isarranged on the paper base (7); the circular center of the chip (1) is provided with a circular hole; the sampling part (2) is arranged in the circular hole; more than 2 sample processing zones (3) are uniformly symmetrically arranged around the sampling part (2) along the diameter extending lines; a port of each sample processing zone (3) along the diameter extending line is connected with a sample dividing part (6); each sample dividing part is connected with a detection zone (5); and the chip (1) is provided with more than two screw holes (4) along the diameter extending lines for fixing.

The invention discloses a nucleic acid multiple detection micro-fluidic chip capable of realizing automatic sample feeding. The chip is a closed chip which is formed by bonding a substrate and a cover plate and is only provided with a sample feeding hole; the substrate is provided with a sample feeding hole, a main sample feeding channel, a reaction unit, a vacuum cavity and a vacuum channel; the reaction unit communicates with the main sample feeding channel through a bridging channel; one end of the main sample feeding channel communicates with the sample feeding hole; the vacuum cavity communicates with the vacuum channel, and the vacuum cavity is separated from the reaction unit through an air-permeable diaphragm; and a sample adding hole matched with the sample feeding hole is formed in the cover plate. According to the design of the nucleic acid multiple detection micro-fluidic chip capable of realizing automatic sample feeding, vacuum pumping is performed during preparation, and the chip is stored in a sealed manner in a vacuum bag; when the chip is used, the vacuum packaging bag is torn, sample feeding can be directly performed, and power devices such as a sample feeding pump are not needed; and the requirements of nucleic acid field detection on instruments and equipment can be greatly reduced.

The invention is suitable for the technical field of direct-reading spectrum detection equipment, and provides a sample pretreatment mechanism, which comprises a sample introduction assembly, a sampling assembly, a sample grinding assembly and a transfer assembly. The sampling assembly is driven by the transferring assembly to reciprocate in the x-axis direction, the y-axis direction and the z-axis direction, so that the sampling assembly grabs a sample from a sample position, the grabbed sample is transferred to the sample grinding assembly to be ground, and the ground sample is transferred to a designated position; or the sampling assembly directly transfers the sample grabbed from the sample position to a designated position, so that traditional manual sample pretreatment is converted into mechanical sample pretreatment, on one hand, the detection efficiency is improved, on the other hand, huge workload can be dealt with, operation errors caused by exhaustion of operators are avoided, and the safety of operators is ensured; and the labor intensity of the operators is reduced. The invention further provides a full-automatic analysis system which comprises the sample pretreatment mechanism and is used for the direct-reading spectrometer.

The invention discloses a repairing device applied after removal of bacterial plaques on the surface of a material in a cabin of a space station and an application method, and relates to the technical field of cabin inner surface repairing. The repairing device comprises a liquid storage bag, a sample injector and a brush head, wherein a liquid outlet of the liquid storage bag is communicated with an inlet of the sample injector; and the brush head is arranged at the front end of the sample injector. The equipment is small and light, is simple to operate, is matched with a water-based antibacterial and mildew-proof agent, and can be used for repairing after removal of the bacterial plaques on the surface of the material in the cabin under microgravity. Negative-pressure automatic liquid supply is realized according to the following manner: a movable handle is pressed / loosened, and the water-based antibacterial and mildew-proof agent is automatically injected by utilizing the pressure change in a volumetric flask. The adjustability of the sample injection amount is realized according to the following manner: the brush head is selected according to the required coating area and the required position of the surface of the material in the cabin of the space station, the required sample injection amount is determined, the movable handle is pressed to enable an adjusting gear to be matched with a positioning sleeve, and the sample injection amount can be adjusted by rotating the adjusting gear. The suck-back prevention function is realized according to the following manner: the design of one-way valves is adopted, only one of the two one-way valves is opened at the same time, liquid can only move in the single direction, and liquid backflow can be prevented.