41results about How to "Reduce the possibility of carryover" patented technology

The invention provides a cleaning and drying method for improving the cleanness of a wafer. The method comprises the following steps of: supplying a cleaning table, and horizontally putting the wafer on the cleaning table; arranging a cleaning sprayer above the circle center of the wafer, wherein the liquid outlet direction of the cleaning sprayer is inclined with a vertical direction of the wafer; starting the wafer to rotate horizontally, and starting the cleaning sprayer to move horizontally; starting a cleaning process, wherein the cleaning sprayer sprays out cleaning solution to the surface of the wafer, and the cleaning sprayer horizontally moves to a position deflected away from the circle center of the wafer and stops moving; and finishing cleaning, wherein the cleaning sprayer stops supplying the cleaning solution, and the wafer continues to rotate horizontally to be dried. The invention also provides cleaning and drying equipment. According to the method and the equipment, the cleanness of the wafer can be improved greatly; the problem about residues of liquid impurities and granular impurities is solved; the equipment is easy and convenient to improve; the cost is low; and the performance, the yield and the reliability of a wafer product are improved, and the process cost is reduced.

The invention discloses a vacuum seal structure and a manufacturing method thereof. The vacuum seal structure comprises a seal shell (2), a potting adhesive (6) and a seal device (7), wherein the seal shell (2) comprises a chamber; the chamber comprises a lateral wall and an open end and is used for accommodating an air escape element (1); the potting adhesive (6) is filled into the chamber of the seal shell (2) and coats the air escape element (1); and the seal device (7) is used for sealing the open end of the chamber of the seal shell (2) and is in tight contact with the potting adhesive (6) and the lateral wall of the seal shell (2). A liquid low-melting point alloy covers the potting adhesive (6) and forms the seal plate (71) as the seal device (7) after being cooled and solidified. The vacuum seal structure can prevent a nonmetal seal element from escaping air to generate harmful air; the wall thickness of the vacuum seal structure is reduced; the air escape area of the vacuum seal structure is reduced; and the possibility of a residual gas is reduced.

The invention discloses a sodium hyaluronate hydrogel with a fast curing function and a preparing method thereof, and particularly relates to the technical field of biomedical engineering. The sodiumhyaluronate hydrogel is prepared from, by mass, 5%-10% of sodium hyaluronate, 2.5%-5% of methacrylic anhydride, 0.1%-1% of a photoinitiator, 2%-5% of alkaline buffering liquid and the balance deionized water. According to the sodium hyaluronate hydrogel with the fast curing function and the preparing method thereof, the sodium hyaluronate hydrogel has the advantages of fast curing, the excellent biocompatibility and the ideal mechanical strength; the preparing method has the advantages of being high in reaction efficiency, short in reaction time and high in product acylation rate, gelatinizingrate and mechanical strength.

The invention discloses a solar water heater with efficient heat gathering and heat preservation functions, and belongs to the field of solar water heaters. According to the solar water heater with the efficient heat gathering and heat preservation functions, water and quick lime enter an inner cavity of a reaction tank through a water guide pipe and a quick lime guide pipe correspondingly to generate a large amount of heat, the heat is conducted to a heating pipe through a heat conduction sleeve, and water in an inner cavity of a water heater body is subjected to heat preservation and heating through the heating pipe, so that the temperature of the water in the inner cavity of the water heater body is kept at 40 DEG C or even higher at minimum, the energy loss is reduced, economic benefits are improved, the water and the quick lime can be quantitatively and automatically conveyed, workers only need to conduct filling of the water and the quick lime regularly, and operation and use by people are facilitated; and slaked lime can be generated after the water reacts with the quick lime, water flow reacts with the slaked lime through an inner cavity of a storage box in the process that water needs to be supplemented to the water heater body through a water inlet guide pipe, the water can be disinfected, and the water quality can be softened.

The invention discloses a noise reduction device of an exhaust pipe. The noise reduction device of the exhaust pipe comprises a barrel. A noise reduction cavity is formed in the barrel. The two ends of the barrel are provided with an air inlet and an air outlet respectively. Two partition plates and two baffles are installed in the noise reduction cavity sequentially in the direction of the air outlet. A connection pipe penetrates through the upper portions of the two partition plates and penetrates through the lower portions of the two baffles. The lower portion of each partition plate is provided with a plurality of through holes. A plurality of air holes are formed in the upper portion of each baffle. A ventilation pipe is connected between the air outlet and the air inlet and penetrates through the partition plates and the baffles. A pneumatic control valve is arranged at the connecting position between the ventilation pipe and the air inlet. When the flow of air flowing in from the air inlet is small, noise generated by air flow correspondingly is low, the pneumatic control valve is closed directly, the air flow is directly exhausted from the ventilation pipe via the air outlet, the possibility of residual air flow in the noise reduction cavity is decreased, and the service life of the noise reduction device can be prolonged.

The invention discloses a tail gas and noise processing mechanism which comprises a cylinder body. A noise reduction cavity is formed in the cylinder body, the two ends of the cylinder body are provided with an air inlet and an air outlet respectively, two partition plates and two baffles are sequentially arranged in the noise reduction cavity in the direction of an air outlet, the upper portions of the two partition plates are communicated with the lower portions of the two baffles through connecting pipes, the lower portions of the partition plates are provided with a plurality of through holes, the upper portions of the baffles are provided with a plurality of air holes, a ventilation pipe is connected between the air outlet and an air inlet and penetrates through the partition plates and the baffles, and a pneumatic control valve is arranged on the connection position of the ventilation pipe and the air inlet. The tail gas and noise processing mechanism further comprises hollow noise reduction bulges which are arranged on the through holes in the direction back to the air inlet. When air flow across the air inlet is smaller, the air flow generates smaller noise accordingly, the pneumatic control valve is shut off directly, the airflow is discharged from the air outlet and through the ventilation pipe, and the service life of the noise reduction device is prolonged.

The invention discloses a pre-embedded oxygen-free packaging detection method for an integrated circuit board, belongs to the technical field of circuit packaging, and can realize innovative embeddingof a pre-embedded detection rod in the packaging process of the integrated circuit board; therefore, on the one hand, leads can be conveniently led out of a packaging body from the integrated circuitboard; on the other hand, oxygen detection can be carried out in the encapsulation body in a water supply triggering mode after encapsulation is finished, oxygen is consumed while the oxygen is detected in a first communication and air suction mode, then stable carbon dioxide gas is released, residual oxygen can be expelled, residual oxygen is reduced, and the residual oxygen is pre-stored in theencapsulation body, so even if air leakage occurs in the later period, external air can be prevented from entering by utilizing the filling property of carbon dioxide, so certain time is provided foroverhauling of technicians, and the packaging quality of the integrated circuit board is improved.

The invention belongs to the technical field of washing machine components, and particularly relates to a washing machine and a dispenser component thereof. The dispenser component includes a dispensing box and a water guide box disposed at the bottom of the dispensing box, the dispenser component further includes a barrier part between the bottom of the dispensing box and the water guide box, andthe barrier part is configured to prevent mixed liquid containing detergent additives from partially flowing back into a gap between the outer side of the bottom of the dispensing box and the inner side of the bottom of the water guide box when the mixed liquid flows into the washing machine. Further, the outer side of the bottom of the dispensing box and the inner side of the bottom of the waterguide box are arranged as conformal bonding structures, so that the gap between the outer side of the bottom of the dispensing box and the inner side of the bottom of the water guide box is reduced.According to the dispenser component, the mixed liquid is prevented from flowing into the gap, and the gas is reduced as much as possible, so that backflow of the mixed liquid to the gap between the outer side of the bottom of the dispensing box and the inner side of the bottom of the water guide box is effectively prevented, and a phenomenon of detergent residual in the gap is avoided.

The invention discloses a noise weakening processing method for an exhaust gas emission pipe. On the basis of two stages of noise reduction processing inside a cylinder, when the flow of gas flowing into a gas inlet is small, noise generated by the flow of gas is small correspondingly, a pneumatic control valve is directly switched off, the gas is directly exhausted by a ventilation pipe through a gas outlet, the probability that gas remains inside a noise reduction cavity is decreased, and the service life of a silencer is prolonged.

The invention relates to an electric rotary laundry rack, which comprises a circular truncated cone-shaped base, wherein a motor and a storage battery are fixedly arranged in the base; a switch for controlling on/off of the motor is arranged on the upper surface of the base; the motor, the storage battery and the switch are sequentially and electrically connected in a matching manner; a rotating shaft is arranged in the center of the base in an upward manner; the rotating shaft is connected with a rotor spindle of the motor; hangers staggered from up to down sequentially are arranged on the side surface of the rotating shaft in an extending manner; a clothes rack is fixedly arranged at the front part of each hanger; fixing clips are arranged at the upper part of each clothes rack so as to prevent the clothes from falling off due to rotation. The laundry rack is simple in structure and artistic in appearance, and enables clothes to obtain uniform illumination during drying; the clothes can be air dried quickly, and the probability of formation of water spots is lowered; therefore, great convenience is brought to daily life.

The invention discloses an automobile exhaust pipe noise elimination processing method. The automobile exhaust pipe noise elimination processing method includes two continuous noise elimination processing processes, firstly, when the amount of airflow flowing inside through an air inlet is small, noise correspondingly generated by the airflow is low, a pneumatic control valve is directly closed, the airflow is directly exhausted through an air outlet via a breather pipe, the probability that the airflow is left in a noise elimination cavity is decreased, and the service life of a silencer can be prolonged.

The invention provides an electrode storage and treatment method for an upper gastrointestinal pH value dynamic monitor. The steps are as follows: after the pH electrode is used, it is thoroughly rinsed under flowing tap water, and the operating part of the pH electrode is cleaned; the cleaned pH electrode is operated. Soak the part in a sterilized dish containing 2% alkaline glutaraldehyde for 20 minutes; take the pH electrode out of the sterilized dish, rinse the sterilized part of the pH electrode under running tap water, then wash it again in distilled water, take it out After drying; insert the dried pH electrode into the protection solution, so that a layer of protection solution is adhered to the surface of the pH electrode operation part; dry the pH electrode with the protection solution, and pack the electrode or hang it after drying. Keep in storage for later use. The pH electrode of the present invention is stored after disinfection, which can avoid the growth of microorganisms. The surface of the pH electrode is covered with a protective layer, which can achieve the purpose of antibacterial and antiseptic, effectively protect the detection sensitivity of the electrode, and avoid damage during storage. .

The invention discloses a power supply device of a new energy water-saving sprinkling irrigation system, and belongs to the field of water sprinkling irrigation. A water source reacts with quick lime particles and releases a large amount of heat, and the heat is communicated with the outside through a communicating pipe to form upward hot air flow; the hot air flow drives the unpowered air cap to rotate and then cooperates with the generator to rotate to generate electricity, and the hot air flow can also eliminate the residual magnetism on the surfaces of the first electromagnetic block and the second electromagnetic block, so that the rotation of the unpowered air cap does not need to drive the fan blades to perform linkage, and the rotation condition of the unpowered air cap is greatly reduced; if the fan blades passively participate in linkage, the hot air flow can not drive the unpowered air cap to rotate, and a calcium hydroxide solution generated by the reaction of the water source and the quick lime particles can also improve the soil and balance the PH value of the soil, so that resource reserve is provided for later soil development.

The invention discloses a surgical curette with a navigation assisting function, which comprises a working head and a handle; a plurality of navigation ball supports are arranged on the handle; a holding part is arranged on one side, far away from the working head, of the handle; a holding groove is formed in the centre of the holding part; two parallel circulating water pipes are arranged in the working head; the two circulating water pipes are connected and communicated through a communicating pipe; a support is arranged at the top in the handle; an electric heating piece is arranged in the support; a water storage block is arranged at the bottom of the electric heating piece; a temperature sensor is arranged in the middle of the outer surface of the water storage block; and a booster pump is arranged at one side, close to the working head, of the water storage block. The surgical curette disclosed by the invention has the beneficial effects that: on the basis of a traditional double-end surgical curette, a support structure capable of containing a navigation ball is creatively arranged, so that the curette has the real-time surgical navigation function while the surgical function is performed, and the curette is extremely high in practicability.

The invention provides a protective solution used for the storage process of an electrode of an upper gastrointestinal tract pH value dynamic monitor. The protective solution is prepared from the following materials according to the mass ratio: 5 parts of glycerinum, 3 parts of ethyl alcohol, 12 parts of water, 6 parts of loofah juice and 3.5 parts of white carbon black; the water is heated to 85 DEG C, the glycerinum is dissolved in water, then the white carbon black is added, the mixture is continuously stirred for more than 5 minutes and then refrigerated for 10 minutes at the temperature of subzero 12 DEG C, the temperature is raised to subzero 2 DEG C, the heat is preserved for 5 minutes, the temperature is raised to 20 DEG C, the heat is preserved for 10 minutes, and then the mixture is evenly blended and stirred with the ethyl alcohol and the loofah juice to obtain the protective solution. The protective solution forms a layer of protective layer on the surface of the pH electrode to fulfill the purposes of inhibiting bacteria and resisting corrosion, the detection sensitivity of the electrode is effectively protected, and the electrode is prevented from being damaged in the storage process.

The invention provides a zero-pesticide-residue Chinese wolfberry fruit production method which comprises the following steps: in the dormancy period of Chinese wolfberry fruits, cleaning a garden by using a sulfur-containing mineral pesticide; before and after the germination period, nicotine insecticides are adopted for prevention and treatment; in a new shoot growth period, an acaricide, a nicotine insecticide and a plant resistance inducer are combined for prevention and removal; in the mature period of new shoots, tetronic acid miticides and plant resistance inducers are combined for prevention and removal; in the initial flowering stage, neonicotinoid insecticides, acaricides and plant inducers are combined for prevention and removal; in the young fruit stage, pyrethroid insecticides, macrolide insecticides, acaricides and plant resistance inducers are combined for prevention and removal; a sulfur-containing bactericide and a plant resistance inducer are combined for prevention in the first crop fruit mature period; after the fruits are harvested, acaricides and fungicides are combined for prevention and treatment. According to the method, pesticide application is carried out in combination with the actual situation of diseases and insect pests in Chinese wolfberry cultivation, zero pesticide residue of Chinese wolfberry is achieved, the input of harmful chemicals is reduced, and the cultivation cost is reduced.