56results about How to "Simple flow path" patented technology

A system for dispensing and filtering fluid is disclosed, in which the fluid flow path is substantially vertical from the fluid inlet through fluid dispense. Substantially all wetted surfaces are Teflon® or some similar non-contaminating fluid, for applications such as cleanroom processes. A valve and a filter chamber are incorporated into a pump head to simplify the flow path and reduce potential contamination points. Preferred methods, and chips or other microelectronic devices fabricated from the apparatus or methods, are also disclosed.

An SOF measuring system that can continuously measure SOF and a soot measuring system that can continuously measure soot are connected with an exhaust gas line. The soot measuring system comprises a diluter that selectively dilutes either one of the exhaust gas and standard gas whose hydrocarbon concentration is known with diluent gas and extrudes it. A dilution ratio adjusting device can adjust a dilution ratio of the diluter. A soot detector continuously detects soot in the exhaust gas or the standard gas diluted by the diluter. The SOF measuring system can be connected with the diluter so that an exhaust gas analyzer can measure the hydrocarbon concentration in the standard gas diluted by the diluter.

The invention belongs to the technical field of space division, and in particular relates to a dual-tower argon producing system and a process thereof for producing argon by low temperature fractionation. The process comprises that: an air fractionating tower produces argon fraction containing 6 to 10 percent of argon GAR1; the argon fraction containing 6 to 10 percent of argon GAR1 is introduced into an argon roughening tower II (C3-2) to form argon fraction GAR2; the argon fraction GAR2 is introduced into an argon roughening tower I (C3-1); in the argon roughening tower I (C3-1), oxygen and nitrogen are removed through the rectification of an argon refining tower, and pure liquid argon is formed between the upper section and the lower section of the argon roughening tower I (C3-1), and is extracted to serve as a product. The system and the process have the advantages of simple process flow, low difficulty in controlling each part, investment conservation and high safety.

The invention discloses a four-way crossover valve, pertaining to a fluid control unit. Existing four-way crossover valves applied to large-scale air conditioning systems occupy large space, the stream is complex, a plurality of circuit control systems are required, failures tend to occur easily and the maintenance is inconvenient. The invention comprises a large-sized master valve and a control valve which is used to control the changeover of the large-sized master valve. The large-sized valve has a system connection tube. The control valve is connected with the large-sized mater valve through a control connection-tube; the control valve comprises a control master valve and a pilot valve. The pilot valve is connected with the control master valve through a capillary tube, and the control master valve is connected with the large-sized master valve through a control connection tube. The invention takes the original master valve, guide valve and electromagnetic coil as control-valve components to control the direction of refrigerant flow of the large-sized master valve; in respect of structure, the control-valve components are fixed on the large-sized master valve body directly; compared with the structure of a plurality of four-way crossover valves connected in parallel, the invention has the advantages of small room occupation, brief stream, control-friendly circuit, etc. In addition, the manufacturing cost is reduced and the invention is in compliance with trend of energy-conservation society.

The invention relates to a sealing structure capable of achieving bearing cavity-sharing and bearing external cavity pressure equalizing. The sealing structure is provided with front and rear bearing supporting points, one of the bearing supporting points is designed by adopting a simple supporting structure, the other one of the bearing supporting points is designed by adopting a cantilever supporting structure, so that two adjacent bearings are close in space, a front bearing seat and a rear bearing seat are connected together, the cavity-sharing design between the adjacent bearings is achieved, and thus pressure in a bearing cavity is convenient to adjust. A plurality of air hole structures are arranged on the front bearing seat and the rear bearing seat in the circumferential direction correspondingly, the angular positions, the shapes and the sizes of the air hole structures on the two bearing seats are mutually matched, and the air hole structures on the two bearing seats correspond one to one, channels communicating with two bearing external cavities are formed, and therefore pressure equalizing of the front bearing external cavity and the rear bearing external cavity is achieved; flow path of an air system is simplified, the design difficulty of the air system sealing the bearing cavity is reduced, and moreover the reliability of operating is high; and pressure of the bearing external cavities is adjusted by adjusting comb tooth gaps of inlet-outlet ports, build-up of the pressure of the bearing external cavities is facilitated, and the sealing effect is enhanced.

The invention discloses a flow injection serially connected microelectrode electrochemical automatic method and device for simultaneous measurement of various electrolytes in a blood sample, and belongs to the field of clinical examination. A multifunctional valve is arranged in a 'sampling' position, carrier flow is converged with an acidity regulator under the power action of a pump, continuously flows through a mixing coil and an electrochemical flow-through detector, and generates base line electrode potential signals; a blood sample simultaneously enters a sampling quantification ring for automatic precision quantification; a valve is switched to the 'injection' position, a quantified 'blood sample plug' is injected into the carrier flow in a high repetition manner, is mixed with the acidity regulator and flows into the electrochemical flow-through detector, respective potential signals can be obtained, and blood sample results can be obtained through a computer. Meanwhile, the carrier flow follows the 'blood sample plug' to automatically and timely clean an electrode sensitive membrane surface and a system. The invention has the advantages of high automation degree, fast measuring speed, good repeatability and less consumption of samples, and eliminates the system plugging caused by blood samples and the cross contamination.

The invention relates to a sample injection method of a micro fluidic chip system, in particular to a large-volume sample injection method and a special chip adopted in a micro fluidic chip, wherein, two or more than two shunt channels are arranged between a chip separation channel and a mobile phase inlet inside a micro fluidic chip system adopting fixed stationary phase; large-volume sample injection of the micro fluidic chip system is realized through controlling the switching and cutoff of the fluid inside the system. The method is suitable for large-volume sample injection inside a micro fluidic chip in electrochromatography mode, compression electrochromatography mode and liquid phase chromatogram. Moreover, the method has the advantages that: sample injection of large-volume sample inside a micro fluidic chip can be realized; the invention overcomes the gradient delay effect of the system, and is particularly suitable for gradient separation; moreover, the invention has the characteristics of simple strucuture, convenient operation, small dead volume, small pre-column effect and good sample injection repeatability, etc.

A liquid drop flow injection unit and quantitative analysis method includes constant flow pump, injector pump, peristaltic pump, negative high pressure controller high pressure controller, chemoluminescence instrument, and computer. Quantitative analysis method includes preparation reagent, preparing sample solution, standard curve and detecting sample. Said invented liquid drop flow injection unit and quantitative analysis method can be used in inorganic ions, organic molecule, medicine etc flow injection analysis.

The invention discloses an integrated experimental device for controlling a dynamic process of a flow industry, and relates to an experimental control device. The device consists of more than two resistance-capacitance water tanks, and a pipeline-free and valve-free integration mode is used for forming the experimental device for simulating dynamic characteristics of an object. A plurality of control system modes are configured for test. A controlled object of the experimental device is formed by integrating basic units which are resistance-capacitance links without pipelines or valves. The fluidic resistance of a throttling hole is regulated in a threaded seat cover way, and is changed from 0 to infinite to simulate a plurality of linear or nonlinear dynamic characteristics. The water tanks are provided with measurement transmitters respectively, a field indication rotor flow meter, a throttling hole plate, a control valve and a circulation water pump are arranged in four paths of water inlet pipelines respectively, and a pressure meter is arranged at an outlet of the water pump. The device can be used for a process control simulation experiment in flow processes of large chemical production devices, equipment and machines, fluid production devices, equipment and machines and the like, and is applied to the automatic teaching and scientific researches of colleges, scientific research institutions, training institutions, factories and the like as well as teaching.

The invention provides a flowing injection colorimetric measurement method for an anion synthetic detergent content of water. The method comprises the following steps of: (1) mixing acid aqueous solution of naphthisodiazine and buffer solution in a first knotted reactor of which the length of capillaries is 0.5 to 10 meters; (2) mixing the obtained mixed solution and aqueous solution of ammonium ferrous sulfate in a second knotted reactor of which the length of capillaries is 0.5 to 10 meters; (3) mixing the mixed solution obtained by the step(2) and solution to be detected in a fourth knotted reactor of which the length of capillaries is 0.9 to 9 meters; (4) mixing the mixed solution obtained by the step(3) and extraction solution of chloroform in a third knotted reactor of which the length of capillaries is 0.5 to 9 meters; (5) separating the obtained mixed solution by an on-line extraction module, making the extraction solution enter a flow through cell and mapping the generated spectrogram; and (6) comparing the drawn sample spectrogram with the standard sample spectrogram, and calculating the anion synthetic detergent content of the sample.

The invention provides a non-methane total hydrocarbon detection system and method based on a single valve. The non-methane total hydrocarbon detection system based on a single valve comprises a sample loop, a chromatographic column and a detector. The ports of only one multi-way valve are respectively communicated with the two ends of the sample loop, the two ends of the chromatographic column, sample gas, carrier gas and the detector. The carrier gas is selectively communicated with one end of the sample loop and one end of the chromatographic column, and the other end of the sample loop is selectively communicated with the sample gas and the other end of the chromatographic column. An adsorption tube is connected with the chromatographic column in series. During sample introduction, gas in the sample loop sequentially passes through the adsorption tube and the chromatographic column, and the adsorption tube adsorbs non-methane hydrocarbon. A temperature control unit is used for heating and refrigerating the adsorption tube. The system has the advantages of simple structure and the like.

There is provided an inkjet print head including: a head plate having nozzles arranged in a length direction, in which each of the nozzles ejects ink therethrough from a side surface of the head plate; an ink inlet provided in the lower portion of the head plate and drawing ink therethrough; a pressure chamber storing the ink drawn in through the ink inlet and communicating with the nozzle; and a piezoelectric element supplying the pressure chamber with driving force in a direction perpendicular to a direction of the ink ejected through the nozzle communicating with the pressure chamber and disposed on the pressure chamber having a membrane interposed therebetween.

An image processing method and an image processing system adapted to processing image information with multiple process pixels are disclosed. The image processing method includes steps of: setting a group of parameters; establishing a luminance lookup table; establishing a chrominance-luminance lookup table; retrieving the image information; determining a format of the image information; and if the format of the image is a first format, utilizing the chrominance-luminance lookup table to generate an adjusted chrominance and a first adjusted luminance corresponding to one of the process pixels; if the format of the image is a second format, utilizing the chrominance-luminance lookup table and the luminance lookup table to generate an adjusted chrominance, a first adjusted luminance, and a second adjusted luminance corresponding to one of the process pixels.

The invention relates to a VR-environment-based process control experiment teaching method and system. The method comprises the following steps: in a preset area, executing a virtual experiment operation through a control handle; to obtain experiment information in the experiment operation by a signal connecting device, and sending the experiment information to an algorithm integration simulationdevice; according to the experiment information, simulating and calculating an experiment result, judging whether the experiment result is within a preset value, if so, displaying the experiment result; if not, feeding back a corresponding control signal to a controller, and controlling a user to adjust the corresponding experiment operation. The system comprises a VR input control device, the signal connecting device, the algorithm integration simulation device and a display device. Through the method and system, under the VR environment, the equipment construction and a pipeline hand valve and so on can be flexibly arranged, the operation is convenient, the experiment time is saved, the place, various raw materials and facilities are saved, and the experiment cost is greatly reduced.

The invention provides an integrated sampling calibration constant-pressure alkalization measurement device. The device comprises a measuring cell, wherein a measuring assembly is arranged in the measuring cell, an outlet of the measuring cell is communicated with a sewage discharge cell through a pipeline, an inlet of the measuring cell is communicated with an alkalization solution pipe, the alkalization solution pipe is sequentially communicated with a water sample injection pipe and a calibration liquid bottle, and a constant-pressure sample injection assembly is arranged between the watersample injection pipe and the alkalization solution pipe; a sample injection valve is arranged on the water sample injection pipe, and a calibration liquid valve is arranged at an outlet of the calibration liquid bottle; the alkalization solution pipe between the constant-pressure sample injection assembly and the measuring cell is communicated and connected with a pressure-stabilizing alkalization gas assembly, and the length of the alkalization solution pipe between the pressure-stabilizing alkalization gas assembly and the measuring pool is 60-80cm. According to the invention, the problemsof integrated alkalization and integrated structure layout of sample water and calibration solution are solved, so that the flow path is simpler, the alkalization effect is more obvious, the flow fault and maintenance cost are greatly reduced, the reliability of the instrument is greatly improved, and the service life of the instrument is greatly prolonged.

The invention provides a flowing injection colorimetric measurement method for an anion synthetic detergent content of water. The method comprises the following steps of: (1) mixing acid aqueous solution of naphthisodiazine and buffer solution in a first knotted reactor of which the length of capillaries is 0.5 to 10 meters; (2) mixing the obtained mixed solution and aqueous solution of ammonium ferrous sulfate in a second knotted reactor of which the length of capillaries is 0.5 to 10 meters; (3) mixing the mixed solution obtained by the step (2) and solution to be detected in a fourth knotted reactor of which the length of capillaries is 0.9 to 9 meters; (4) mixing the mixed solution obtained by the step (3) and extraction solution of chloroform in a third knotted reactor of which the length of capillaries is 0.5 to 9 meters; (5) separating the obtained mixed solution by an on-line extraction module, making the extraction solution enter a flow through cell and mapping the generated spectrogram; and (6) comparing the drawn sample spectrogram with the standard sample spectrogram, and calculating the anion synthetic detergent content of the sample.

The invention relates to a novel tube ice machine. The novel tube ice machine comprises a refrigerating system and a tube ice bucket. A refrigerant compressed and condensed by the refrigerating systemis changed into a liquid state, after being throttled, the liquid state refrigerant flows into the tube ice bucket through a liquid inlet tube of the tube ice bucket to be evaporated, heat of water flowing along the outer wall of a heat exchange tube of the tube ice bucket is absorbed, the temperature of the water is lowered, the water is frozen along the tubular outer wall of the tube ice bucket, and ice making is completed; then the condensed gaseous refrigerant which is not completely liquefied is driven to flow into the tube ice bucket to exchange heat with the made ice, ice removing is conducted, ice making and ice removing operation is conducted repeatedly and alternately, and finally tube ice making is completed; and an intelligent valve is further arranged, an outlet communicateswith the liquid inlet tube of the tube ice bucket, an inlet communicates with a throttled refrigerant channel, through the intelligent valve, bidirectional flowing of the liquid refrigerant can be achieved, and the gaseous refrigerant in the tube ice bucket is blocked and flows reversely through the intelligent valve. According to the technical scheme, the intelligent valve controls one-way flowing of the gaseous refrigerant and bidirectional flowing of the liquid refrigerant, the system and control are simplified, and operation is reliable.

The invention discloses a clean angle valve. The clean angle valve comprises a valve body, a valve core and a valve handle, wherein a water inlet pipe and a water outlet pipe are arranged on the valve body; a conical surface is arranged on the inner side wall of the water inlet pipe; a connecting hole used for communicating the water outlet pipe and the water inlet pipe is formed in the conical surface; the valve core consists of a water stopping part at one end and a control part at the other end; the water stopping part is a frustum-shaped cone; the small diameter end of the frustum-shaped cone is connected with the control part; the water stopping part is matched with the conical surface on the inner side wall of the water inlet pipe; the outer surface of the water stopping part at one end of the valve core is tightly jointed with the conical surface on the inner side wall of the water inlet pipe; a valve rod at the other end of the valve core penetrates through a water volume control hole and is connected with the valve handle. The clean angle valve is simple in structure, skilful in design, simple in flow passage and free of dead zones and vortex zones; the valve core can be quickly assembled in the valve body from a water inlet; and by virtue of the scouring action of water flow, the clean angle valve can effectively prevent residual and blockage of impurities so as to keep the valve core clean.

There is provided a cartridge for nucleic acid extraction comprising: a first body having a plurality of chambers in which ports are formed at the bottom; a second body coupled to a lower region of the first body; and a piston disposed rotatably in the centers of the first body and the second body and having a port formed at the bottom thereof; and characterized in that the cartridge comprises a plurality of flow paths formed on the upper region of the second body, one end overlapping the port of the piston and the other end overlapping the port of the first body.

The invention relates to a regeneration valve, a multi-gang valve, a hydraulic system and engineering machinery. The regeneration valve comprises a regeneration valve body, a load holding valve, a first control valve and afirst electromagnetic valve ; the load holding valve comprises a first one-way valve, a holding valve inlet which is communicated with the outlet end of the first one-way valve and is formed in the regeneration valve body, and a holding valve control fluid port which is used for introducing hydraulic fluid which enables the first one-way valve to be reversely conducted; the first control valve comprises a first control valve cavity, a first control valve core, a first control valve inlet, a first control valve outlet and a first control valve control fluid inlet which are arranged on the regeneration valve body; the first electromagnetic valve comprises a first electromagnetic valve inlet and a first electromagnetic valve outlet, and the first electromagnetic valve outlet is respectively communicated with the first control valve control fluid inlet and the holding valve control fluid inlet; and the first one-way valve cavity extends inwards from the first surface of the regeneration valve body, the first control valve cavity extends inwards from the second surface of the regeneration valve body, and the first surface intersects with the second surface.

The invention discloses a permanganate index analyzer, comprising a multi-way valve assembly, a peristaltic pump, a digestion assembly and a liquid discharging assembly. The multi-way valve assembly comprises a plurality of channels, all the channels are connected with an inlet of the peristaltic pump, and switch valves are arranged in all the channels. When a sample or a reagent is extracted, thecorresponding switch valve is opened, so that the corresponding channel is communicated with the inlet of the peristaltic pump. The peristaltic pump rotates to send the solution into the digestion cup of the digestion assembly, the heating structure heats the solution in the digestion cup, and the sample and the reagent react in the digestion cup to complete permanganate index measurement. And then the measured solution is discharged by the liquid discharging assembly. The permanganate index analyzer is matched with the peristaltic pump for use through the multi-way valve assembly, so as to complete the extraction of a sample and a reagent. The flow path of the permanganate index analyzer is simplified, the manufacturing cost and the maintenance cost are reduced, the failure rate of the permanganate index analyzer is reduced, and the stability and the convenience of the permanganate index analyzer are improved.

The invention relates to the field of bacteria counting, and discloses a device for rapidly detecting the number of bacteria in a beverage. The device comprises a micro-fluidic chip; the micro-fluidic chip comprises a chip substrate and the following flow paths arranged on the chip substrate, wherein two ends of a sheath flow inflow channel are respectively connected with a sheath flow inlet and a sheath flow fulcrum; two ends of the first sheath flow branch and the second sheath flow branch are respectively connected with the sheath flow fulcrum and the sample focus point; the sample inlet and the sample channel are arranged between the first sheath flow branch and the second sheath flow branch; two ends of the sample channel are respectively connected with the sample inlet and the sample focus point; two ends of the focusing fluid channel are respectively connected with the sample focusing point and the waste liquid outlet; and an optical detection area is arranged in the middle of the focusing fluid channel. The device has high accuracy for bacterial detection, can simplify a flow path and is convenient to clean, so that cross contamination caused by residual bacteria in the flow path is prevented, in addition, detection of a small amount of samples can be realized, the use amount of fluorescent dyes is reduced, and the detection cost is reduced.

An apparatus for cultivating plants according to an embodiment of the present invention includes: a cabinet having a cultivation space; a machine compartment separated from the cultivation space and accommodating a compressor and a condenser; a door configured to open or close the space; a bed that is disposed in the cultivation space and on which a seed package including nutrient solution and seeds is seated; a light assembly radiating light toward the bed; and a water tank disposed in the cultivation space positioned ahead of the machine compartment, and storing water that is supplied to thebed, in which the water tank can be drawn in and out of the cultivation space.