30results about How to "Reduce the effect of concentration" patented technology

The invention discloses a closed underground water solute migration simulation experimental device which comprises a liquid supply unit, a parallel experimental unit, a liquid waste recovery unit, a closed combined cabinet and a waste gas recovery unit, wherein the liquid supply unit provides a solution for the parallel experimental unit, and the flow of effluent or a water head can be controlled; the parallel experimental unit is used for an underground water solute migration simulation parallel experiment, and the experimental solute migration process is monitored through sampling; and the liquid waste recovery unit is used for recovering wastewater generated by the experiment. A closed space is formed by the closed combined cabinet, toxic volatile polluted solute gas is prevented from diffusing, the waste gas recovery unit is used for collecting volatile solutes in the experimental process, and atmospheric pollution is avoided. The experimental device disclosed by the invention is suitable for a simulation experiment of volatile or semi-volatile polluted solutes and has the characteristics of sustainability and high stability. Meanwhile, the experimental equipment is simplified, the experimental cost is saved, and the uniformity of the water head or flow conditions during the parallel experiment is guaranteed, so that comparative analysis of the parallel experiment results is facilitated.

The invention provides a high voltage semiconductor device and a manufacture method thereof; the device comprises a first dope type semiconductor substrate, a second dope type epitaxial layer arranged on the semiconductor substrate, a second dope type high voltage well positioned in the epitaxial layer, a second dope type deep well positioned in the high voltage well, a first dope type reduced-field layer positioned on the surface of the epitaxial layer and/or in the epitaxial layer (wherein at least a part of the reduced-field layer is positioned in the deep well), a first dope type first well parallel to the high voltage well and positioned in the epitaxial layer, a second dope type source electrode ohmic contact zone arranged in the first well, a drain electrode ohmic contact zone arranged in the deep well, a grid electrode close to the source electrode ohmic contact zone and at least covering the epitaxial layer between the source electrode ohmic contact zone and the high voltage well. The high voltage semiconductor device and the manufacture method thereof can effectively reduce technical manufacture difficulty, improve device parameter characteristics, and improve device reliability.

The invention relates to a hair care device. The hair care device comprises a heater and a negative ion unit, wherein the heater comprises a lining layer and a heating element arranged in a sleeve mode on the lining layer, and the lining layer is a hollow structure; the negative ion element comprises a power unit and a transmitting unit, the power unit is arranged on the inner wall of the lining layer and extends in the axial direction of the linear layer, and the transmitting unit is connected with the power unit and extends in a direction from the inner wall to the outer wall of the lining layer. During application of the hair care device, the transmitting unit can transmit negatively charged ions to neutralize positive charge on hair, thereby achieving the aim of smoothing hair and eliminating static electricity; the power unit is arranged on the inner wall of the lining layer, the negative ion unit is basically arranged inside the heating element, and the internal temperature of the heating element is lower than the external temperature of the heating element, so that, compared with traditional hair care devices, the hair care device can reduce the temperature of the environment where the negative ion unit is positioned, lower the influence of environment temperature on ions produced by the negative ion unit and further improve the hair care effects.

The invention discloses a low-temperature negative pressure ammonia removal system device based on a fluid-jet flow principle. The low-temperature negative pressure ammonia removal system device comprises a pipeline mixer, a pre-heater, a low-temperature ammonia removal tower, a condenser and a gas-liquid separation tank, and also comprises an ammonia absorber. The ammonia absorber comprises a shell, a gas inlet formed in the top end of the shell, a circulating liquid inlet and a jet flow outlet; a gas outlet of the condenser and a gas outlet of a gas separation tank are connected with a gas inlet of the ammonia absorber; an ammonia recycling tower comprises a tower body, an inlet formed in the tower body, an absorption liquid charging hole is formed in the upper part of the tower body, a charging hole formed in the middle part of the tower body, an exhaust hole is formed in the top part of the tower body, and a circulating liquid inlet and a discharging hole formed in the bottom part of the tower body; the discharging hole is connected with an output pump; the output pump is connected with a product pipeline; a jet flow outlet of the ammonia absorber is connected with an inlet of the ammonia recycling tower; the absorption liquid charging hole of the ammonia recycling tower is connected with the absorption liquid pipeline; the circulating liquid inlet of the ammonia recycling tower is connected with the circulating liquid inlet of the ammonia absorber through a circulating ammonia washing pipeline; a circulating ammonia washing pump and a cooler are arranged on the circulating ammonia washing pipeline.

The invention relates to the technical field of electroplating production lines, in particular to an aluminum alloy floor copper-nickel-chromium electroplating production line and a production processthereof. The aluminum alloy floor copper-nickel-chromium electroplating production line comprises a pretreatment area, and the pretreatment area comprises an ultrasonic degreasing tank, a first cleaning tank, an ash removal tank, a second cleaning tank, a zinc precipitation tank and a third cleaning tank; spraying devices used for cleaning plated parts are arranged between the first cleaning tankand the ash removal tank and between the second cleaning tank and the zinc deposition tank correspondingly, and a spraying device is also arranged on the side, away from the zinc deposition tank, ofthe third cleaning tank; and each spraying device comprises a supporting frame and a spraying mechanism, each spraying mechanism comprises a spraying pipe, a water pump and a clear water tank, and each spraying pipe communicates with the corresponding clear water tank through the corresponding water pump. The production process specifically comprises the following steps of hanging, ultrasonic oilremoval, cleaning, ash removal, zinc precipitation and the like. The spraying devices can spray the plated parts, so that oil stains and impurities attached to the surfaces of the plated parts are fully cleaned, the excellent cleanliness of the surfaces of the plated parts is effectively improved, and the good electroplating quality of the plated parts is guaranteed.

The invention relates to an efficient ozone water production machine which comprises an ozone generator, an aeration cylinder, an ozone decomposition device and a controller, wherein the ozone generator, the ozone decomposition device and the aeration cylinder form a gas supply pipeline; the ozone generator is in pipeline connection with the aeration cylinder; the ozone decomposition device and awater supply electromagnetic valve are arranged at the upper end of the aeration cylinder; a one-way valve, a Venturi mixer and a gas-liquid mixer are sequentially arranged on a connecting pipeline between the ozone generator and the aeration cylinder; a circulating pump is arranged at the lower end of the aeration cylinder and close to one side of the ozone generator; one end of the circulating pump is connected with the lower end of the aeration cylinder, and the other end of the circulating pump is connected to between the output end of the one-way valve and the input end of the Venturi mixer; an ozone water outlet is formed in the other side, far away from the circulating pump, of the lower end of the aeration cylinder; a liquid level assembly, a water supplementing electromagnetic valve, a one-way valve, a circulating pump and a liquid level assembly are arranged on the upper side of the inner side wall of the aeration cylinder and are controlled by a controller. The ozone water machine provided by the invention has the advantages that the concentration of ozone water can be controlled, and gas is fully dissolved.

The invention discloses a base region ring-doped anti-radiation lateral PNP transistor and a preparation method thereof. According to the invention, after a lateral PNP transistor structure is formedconventionally, N-type impurity injection is carried out on the surface of an N-type base region of the lateral PNP transistor once through a photoresist masking injection method, an annular N+ dopedregion is formed on the surface of the N-type base region, and the position where the width Wb of the base region of the lateral PNP transistor is located is pushed into an N-type epitaxial layer bodyfrom the surface of the N-type epitaxial layer. When the lateral PNP transistor with the base region being of a ring structure is in a total dose irradiation environment, although accumulation of positive charges in an oxide layer causes depletion and inversion of a P-type collector region and depletion and inversion of the surface of a P-type emitter region, the width of the base region of the lateral PNP transistor is not affected due to the fact that the width Wb of the base region is moved downwards to the position below the depletion and inversion of the P-type collector region and the depletion and inversion of the surface of the P-type emitter region, so that the lateral PNP transistor with the base region being of the ring structure has high total dose radiation resistance.

The invention discloses a dry electric precipitator with a metal mesh anode plate. The dry electric precipitator comprises a shell, the anode plate and an corona line, the anode plate and the corona line are arranged in the shell, the anode plate and the corona line are arranged alternately and in parallel, and an electric field is formed between the anode plate and the corona line; and the anodeplate comprises a frame and a metal mesh, the metal mesh is fixed in the frame, and the void rate of the metal mesh is 8-20%. The dry electric precipitator has the advantages that through the metal mesh, the lateral scour force of the ion wind on the anode plate is weakened, the production of secondary raising dust is reduced, the pressure of the overall device is lowered below 250 Pa, the equipment resistance is reduced, the fan design requirements and operating energy consumption are reduced simultaneously, and the fact that the outlet particle concentration is below 10 mg/m3 can be achieved; and the current density is significantly reduced, the total current required for the whole anode plate is reduced, the energy saving effect is obvious, the weight of the anode plate is also reduced,the total weight of the whole electric precipitator is greatly reduced, the overall steel mass, installation, manufacture and the like of the electric precipitator are reduced, and the cost is greatly reduced.

The invention discloses a rainfall collection device for measuring rainfall hydrogen and oxygen isotopes through remote control and belongs to the field of rainfall collection. The rainfall collection device comprises a box body, wherein a collection assembly and a remote control device are arranged in the box body, and a temperature monitor and a wind speed monitor are arranged on the outer side of the box body; the collecting assembly comprises a collecting bottle and a funnel, and the collecting bottle is connected with the funnel through a guide pipe; the remote control device comprises a control circuit and a wireless communication circuit, an output end of the temperature monitor is connected with an input end of the control circuit, and an output end of the wind speed monitor is connected with an input end of the control circuit; and a wireless signal output or input end of the wireless communication circuit is connected with a wireless signal input or output end of the control circuit. The device is advantaged in that the temperature monitor and the wind speed monitor are used for testing the temperature and the wind speed in rainy days, then data are transmitted back to a user for measurement and calculation, the initial hydrogen and oxygen isotope content of a rainwater sample is reduced, and the measured hydrogen and oxygen isotope content is more accurate.

The invention discloses a preparation method of a catalyst and a preparation method of chlorine-containing unsaturated polyester. The preparation method of the catalyst comprises the following steps: carrying out imidization process on acetic anhydride and organic alkali by using a solution compounded from polyamide acid, solid acid and a biphthalimide monomer, crushing in a water-phase solution by using a wet crusher, washing, and carrying out vacuum drying to prepare the porous structure catalyst of the polyimide carrier. The preparation method of the chlorine-containing unsaturated polyester comprises the following steps: carrying out reflux dehydration on a chloro-o-xylene gas-phase oxidation byproduct and dihydric alcohol in a solvent, and adding a catalyst to prepare an unsaturated polyester solution; and after dehydration is finished, cooling the solution, adding activated carbon for decoloration, filtering, and evaporating out the solvent to obtain the unsaturated polyester. The application problem of by-products can be effectively solved, and the problem of solid waste of a production line is solved. The flame retardance and the heat resistance of the cured unsaturated polyester resin are improved.

The invention belongs to the technical field of geotechnical engineering, and particularly relates to geotechnical engineering static sounding equipment and engineering application, the geotechnical engineering static sounding equipment comprises a walking device, the walking device comprises a base, a machine shell is fixed on the base, a navigation bridge is installed in the machine shell, a driver seat is installed beside the navigation bridge, and a static sounding device is arranged beside the driver seat. A bottom plate is fixed to the lower surface of the base, a crawler frame is fixed to the lower surface of the bottom plate, crawler belts are installed on the two sides of the crawler frame, a driving mechanism used for driving the crawler belts to walk is arranged on the crawler frame, a winch is installed on one side of the base, a door is installed on the side, close to a driver seat, of the machine shell, and stairs are installed on the side, close to the door, of the base. Stabilizing devices used for stabilizing the equipment are arranged at the four corners of the base, the static sounding equipment not only can be applied to in-situ soft soil, common cohesive soil, floury soil, sandy soil or a soil layer containing a small amount of gravel, but also can be applied to backfill soil, silt soil and mud flat, and large auxiliary equipment is not needed to be matched with the static sounding equipment.

The invention discloses a breeding room ventilation transition chamber which includes a transition chamber body arranged between the inside of a breeding room and the outside of the breeding room. Anentrance door is arranged on the side, near the outside of the breeding room, of the transition chamber body. An exit door is arranged on the side, near the inside of the breeding room, of the transition chamber body. A blocking device that makes the entrance door and the exit door unable to be completely opened at the same time is arranged between the entrance door and the exit door. A ventilation device is also arranged inside the transition chamber body, the air inlet of the ventilation device is arranged at the top of the transition chamber body, the air outlet is arranged at the bottom ofthe transition chamber body, and several layers of filter membranes are arranged at the air inlet. When people get in or out the breeding room from the breeding room entrance and exit transition chamber, doors on both sides of the transition chamber can not be completely opened at the same time, so that air convection inside and outside the breeding room is greatly reduced, the influence of the entrance and exit of the people on temperature, humidity and concentration of various gases in the breeding room is reduced, dust and bacteria on human body are eroded by the air, thus the bacteria andmiscellaneous bacteria brought into the breeding room are reduced.

The invention discloses a breeding room entrance and exit transition chamber which includes a transition chamber body arranged between the inside of a breeding room and the outside of the breeding room. An entrance door is arranged on the side, near the outside of the breeding room, of the transition chamber body. An exit door is arranged on the side, near the inside of the breeding room, of the transition chamber body. A blocking device that makes the entrance door and the exit door unable to be completely opened at the same time is arranged between the entrance door and the exit door. An automatic ozone generator is also arranged in the transition chamber body. When people get in or out the breeding room from the breeding room entrance and exit transition chamber, doors on both sides ofthe transition chamber can not be completely opened at the same time, so that air convection inside and outside the breeding room is greatly reduced, the influence of the entrance and exit of the people on temperature, humidity and concentration of various gases in the breeding room is reduced, and miscellaneous bacteria on human body are cleared to some extent.

The invention discloses a method for making regenerated two-layer cardboard paper by operating a three-layer lapping paper machine, and belongs to the technical field of paper making. The method comprises the following steps: in a normal operation state, stopping a slurry supply pump of a three-layer network, stopping a slurry flushing pump after the three-layer network approaches and feeds water,and then converting the transmission of the three-layer network from the operation state to a stop state; disengaging the core-bottom net composite roller, lifting the composite roller from a composite position to a separated position, disengaging the surface-bottom net composite roller, lifting the composite roller from the composite position to the separated position, releasing instrument corenet interlocking, and releasing transmission interlocking of all core layers and a net pressing part; starting the surface-bottom net, when the running speeds of the two layers of nets are consistent,lowering the surface-bottom net composite roller to a composite position from a separated position; when the opposite bottom approaches and feeds water, starting the surface slurry flushing pump andthe bottom slurry flushing pump, when the pressure is normal, starting the surface layer feeding pump, and the bottom layer feeding pump, keeping 30 g absolute dry quantification of the surface layer,adding the rest quantification completely to the bottom layer, and after the quantification reaches the set quantification, starting paper injection.