34results about How to "Concentration effect" patented technology

The invention discloses an AlGaN/GaN HEMT device with a vertical structure. The device comprises a substrate, an n+GaN layer, a high-resistance GaN layer, an intrinsic GaN layer and an AlGaN layer sequentially formed on the substrate, drain electrodes in Ohm contact with the n+GaN layer, source electrodes in Ohm contact with the AlGaN layer, and gate electrodes, wherein the high-resistance GaN layer is used as a current-blocking layer and includes current conducting through holes formed by injecting Si ions; the current conducting through holes up and down pass through the high-resistance GaN layer. The invention further discloses a method for manufacturing the AlGaN/GaN HEMT device. The vertical structure can be formed on the sapphire or Si substrate with the relatively low price, and the AlGaN/GaN HEMT device is good in current resistance and current transmission, high in voltage-withstanding performance and low in electric leakage.

The invention relates to the technical field of environmental governance accessory devices, in particular to an efficient stirring device for environmental governance. The efficient stirring device is simple in structure, reduces vortexes generated in the stirring process, can scrape off solids or other impurities on the inner wall of a stirring kettle, reduces the influence on the concentration of a governance liquid in the stirring process, improves the stirring speed, and improves the practicability. The efficient stirring device comprises a stirring kettle, wherein the stirring kettle is hollow, the top of the stirring kettle is communicated with an opening, a driving box is arranged at the opening of the stirring kettle and comprises a first ring body and a second ring body which are fixedly connected, a gear ring is fixedly connected to the interior of the first ring body, four planetary gears are meshed with the inner wall of the gear ring and are arranged in a circumferential array, the four planetary gears are meshed with a sun gear, the inner ring of the sun gear is fixedly connected with a driving shaft, the top end of the driving shaft is provided with a driving motor, the driving shaft is provided with a first bearing, the outer ring of the first bearing is fixedly connected with a base, and the four corners of the base are each provided with a second bearing.

The invention relates to the technical field of sewage detection, and particularly discloses a sewage detection device which comprises a sewage detection device body and a sewage tank connected with awater inlet pipe and a water outlet pipe. The water inlet pipe is connected with a first weeping pipe; a fixed box is fixed on the sewage tank, and a sliding box is slidably connected into the fixedbox; a spring is arranged between the bottom of the fixed box and the bottom of the sliding box; a push switch is fixed at the bottom of the fixed box; water in the first weeping pipe can drip into the sliding box; a first water outlet hole is formed in the sliding box; a second water outlet hole is formed in the fixed box; the second water outlet hole is communicated with the sewage tank; an automatic three-way valve is arranged on the drainage pipe, the other two outlets of the automatic three-way valve are connected with a sewage pipe and a flushing water pipe respectively, and the pressingswitch is electrically connected with the automatic three-way valve through a controller. The invention aims to solve the problem of inconvenience in operation caused by switching between sewage detection and flushing of a sewage tank by manually shifting a lifting block.

The invention relates to an automatic anaerobic three-phase separation system and a control method. The system comprises a reactor, a three-phase separator arranged inside the reactor, and a water-sealing assembly and a controller which are arranged outside the reactor, wherein the three-phase separator comprises a plurality of gas collecting hoods arranged in parallel, a gas collecting pipe communicating with the upper ends of the gas collecting hoods, and a gas chamber liquid level gauge installed on the upper end of any one gas collecting hood, the water-sealing assembly comprises a water-sealing tank, and a gas outlet pipe, a water inlet pipe, a water outlet pipe and a water-sealing liquid level gauge which are installed on the water-sealing tank, the gas collecting pipe extends into the water-sealing tank, a first valve is installed on the water inlet pipe, a second valve is installed on the water outlet pipe, and the controller is electrically connected with the gas chamber liquid level gauge, the water-sealing liquid level gauge, the first valve and the second valve, respectively. The three-phase separation system consisting of the three-phase separator with a double-layer inverted V-shaped structure, and a water-sealing tank is adopted, and the gas chamber pressure can be automatically adjusted through the coordinated control of the controller to match system operation.

The invention discloses a stainless steel tube washing and drying device which consists of a support rack (4), wherein a group of transmission rollers (3) are arranged on the support rack (4); a spraying mechanism and a blowing mechanism are arranged in parallel above the one group of the transmission rollers (3); an upper cover (9) is arranged above the spraying mechanism and the blowing mechanism; a collecting tank (5) is arranged below the support rack (4); the collecting tank (5) is connected with a water tank (8) by virtue of a water pump (6); the blowing mechanism comprises an air pump (1); the air pump (1) is provided with a nozzle (2) by virtue of an air tube. The device can be used for alleviating the influence on a pickling liquid, and improving the drying efficiency of the drying device, and therefore the processing effect on a stainless steel tube is ensured.

The invention relates to an oxidization fluid for reducing the content of a highly oxidizable substance (SO2) in electronic-grade sulfuric acid and a preparation method of the oxidization fluid. The oxidization fluid for reducing the content of the highly oxidizable substance (SO2) in the electronic-grade sulfuric acid comprises the following main components: hydrogen peroxide which accounts for 1-30% of the total weight of the oxidization fluid, an inorganic acid which accounts for 0.01-30% of the total weight of the oxidization fluid, and the balance of water. The content of the highly oxidizable substance (SO2) in the electronic-grade sulfuric acid is an important index which can directly affect the quality of electronic-grade sulfuric acid, and by adopting the hydrogen peroxide systemoxidization fluid, the content of the highly oxidizable substance (SO2) in the electronic-grade sulfuric acid can be reduced; in addition, as the reaction generation substance is sulfuric acid, no other impurity can be introduced.

The invention mainly provides a wire rod surface phosphated residue treatment method. According to the method, a cam pump is cooperated with a centrifugal separator to carry out online separation on amixture in a phosphating cylinder, and separated phosphating solution can return to the phosphating cylinder, so that treatment of the phosphated residue is carried out without halt production; in addition, centrifugal separation can ensure full separation of residue and liquid to increase the utilization ratio of the phosphating solution; and moreover, the phosphating solution directly returns to the phosphating cylinder to ensure that the parameter is not changed, and the phosphating effect is not affected.

The invention relates to a water quality microbiological detection device used for microbiological detection in a water sample. The water quality microbiological detection device comprises a detectorbody, a detection unit and a heating unit, wherein a detection cavity is arranged in the detector body; the detector body is provided with a first communicating hole and a second communicating hole; the first communicating hole is located at the top of the detector body, so as to fill liquid in the detection cavity by virtue of the second communicating hole, and gas in the detection cavity can beemptied by virtue of the first communicating hole and can overflow from the first communicating hole; and a filter element is arranged in the detection cavity, and the filter element is connected withthe second communicating hole, so as to stop microorganisms from being discharged from the second communicating hole. The first communicating hole is formed in the top of the detector body, and the air can be evacuated, so that the detection cavity can be full of the filled liquid, the liquid flows out, produces negative pressure and sucks in the water sample, the two communicating holes in the detector body can be conveniently and directly connected with a pipeline, and online real-time automatic detection on the microorganisms is realized.

The invention discloses a processing device for one yarn with multiple colors. The processing device comprises a yarn feeding mechanism, a preprocessing mechanism, a drawing and stretching mechanism and a take-up mechanism, wherein an etching device is arranged between the yarn feeding mechanism and the preprocessing mechanism; the etching device consists of two or more etching grooves which accommodate etching solutions of different concentrations; yarn guide rolls are mounted at two ends of each etching groove; yarn pressing rotary drums are arranged under the yarn guide rollers and in the etching grooves; the drawing and stretching mechanism comprises two drawing and stretching structures which are first drawing and stretching structures or second drawing and stretching structures, and each drawing and stretching structure comprises a drawing and stretching roller and a pressing wheel which are mutually matched; the drawing and stretching rollers of the first drawing and stretching structures, or the drawing and stretching rollers of the second drawing and stretching structures generate intermittent tension through moving up and down. The drawing and stretching rollers of the upper and lower drawing and stretching structures generate the intermittent tension through moving up and down, so that a part of fibers of the yarns are snapped or generate stress rupture, the color staining capacity of the part of the fibers of the yarns is changed, and the color effect of different shades is presented during follow-up color dyeing, so that the purpose that one yarn has multiple colors can be realized.

The invention belongs to the field of molecular biology detection, and particularly relates to a positive standard substance for detecting Newcastle disease viruses and H9N2 subtype avian influenza viruses, and a preparation method and application of the positive standard substance. Amplification primers of the H9N2 subtype avian influenza viruses and amplification primers of the Newcastle diseaseviruses are screened, amplified target fragments are connected with vectors, positive recombinant plasmids are screened and verified, the concentration of the positive standard substance is calculated, a standard curve of the standard substance is plotted, and qualitative and quantitative detection is achieved; and finally, by preparing and applying the stable and efficient positive standard substance, qualitative and quantitative detection of samples to be tested is achieved, and thus the positive standard substance is extremely suitable for diagnosis of the Newcastle disease viruses and theH9N2 subtype avian influenza viruses.