85results about How to "Smooth removal" patented technology

A manufacturing method of shallow groove insulation comprises providing a semiconductor substrate, positioning sequentially formed a pad oxide layer and a hard mask layer, forming a groove in the semiconductor substrate, arranging an opening in a position corresponding to the groove in the pad oxide layer and the hard mask layer, forming a medium layer in the groove and on the hard mask layer, removing the medium material on the hard mask layer by planarization technology, etching the medium layer in the groove to reduce the height difference between the medium layer surface and the semiconductor substrate surface, and lead the edge of the medium layer to form a protuberance. The manufacturing method of shallow groove insulation can reduce the depth of the top edge groove of the shallow groove insulation, and improve the element properties.

The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment device and a sewage treatment method for a self-cleaning type micro-aeration vertical baffled wetland. The invention discloses the sewage treatment device for the self-cleaning type micro-aeration vertical baffled wetland. The sewage treatment device consists of a water distribution region, a tank body and a water collecting region; to-be-treated sewage flows into the water distribution region through a water inlet tube, and then flows from the distribution region into the tank body by taking an overflow; outlet water treated by the tank body flows into the water collecting region by taking an overflow; and the tank body is formed by connecting a plurality of stages of vertical baffled wetlands with different treatment functions in series, in a water flow direction, namely an anaerobic wetland, a carbon oxidization wetland and a short-cut nitrification-denitrification wetland. The invention further provides a sewage treatment method by adopting the device. According to the device provided by the invention, the tank body is divided into an anaerobic section, an aerobic section and a micro-aerobic section in the water flow direction, and efficient removal of carbon pollutants and nitrogen pollutants can be realized; and the problems that a conventional constructed wetland is too low in dissolved oxygen, relatively great in land area, easy to block by stuffing and difficult to clean after being blocked are solved.

An embodiment according to the present invention is to provide a control method of a refrigerator that can operate a compressor before a start of a defrost operation and during a predetermined time to supply a high-temperature hot gas to an evaporator. With the control method of the refrigerator according to the embodiments of the refrigerator, the compressor is driven immediately before the defrost operation and the blower fan cooling the compressor stops, such that the high-temperature hot gas can be supplied to the evaporator, thereby increasing the defrost efficiency.

The present invention provides a ball milling preparation method of a rice hull-based porous silicon nanomaterial, belonging to the technical field of preparation of nano-electrode materials. The method comprises the steps of heating to oxidize or incompletely oxidize water-washed and dried rice hull in air, so as to obtain rice hull ash, then soaking by using dilute hydrochloric acid, washing with distilled water and then drying, and obtaining the dried rice hull ash; and mixing the dried rice hull ash with aluminum powder, or aluminum powder, magnesium powder and a corresponding chloride so as to obtain a mixed material, then putting the mixed material in a ball milling machine to grind and cool to room temperature, collecting the product, soaking with dilute hydrochloric acid, then washing with distilled water so as to obtain the rice hull-based porous silicon nanomaterial. The preparation method is simple, the cost of the raw material is low, the yield is high, solid phase reaction is good for industrial production, and the prepared rice hull-based porous silicon nanomaterial has excellent electrochemical performance.

The invention provides multi-purpose slightly-ground oat kernels and a production method thereof. The production method comprises the following steps of removing lignified outer coats of oat kernels,passivating the activity of lipase and the activity of peroxidase through performing oat steaming twice and performing oat baking treatment once, performing high-temperature heat-moisture treatment sothat starch is 100% gelatinized, and then performing slight grinding so as to obtain granules of which the thickness is 1.0-1.8mm. According to the processing method of the multi-purpose slightly-ground oat kernels, the lignified outer coats of oat are removed through brushing the oat, so that digestion by intestinal tracts is facilitated; the activity of the lipase and the activity of the peroxidase are passivated through performing oat steaming twice and performing oat baking treatment once, so that the storage stability of products is strengthened, and the quality guarantee period is prolonged; besides, the starch can be gelatinized through the high-temperature heat-moisture treatment, so that the steaming time of the products is greatly shortened; and the ageing properties of the products can be improved through the slight grinding, so that the steaming time is further shortened, and besides, the situation that the products have slightly glutinous mouth feel, and chewiness and elasticity is guaranteed. The multi-purpose oat kernels disclosed by the invention not only are suitable for being applied to processing of foods of cooked rice, porridge and soup, or coarse cereal porridge and the like, but also can be matched with foods of milk, beverages and the like.

The invention discloses a meltallizing method of a ceramic part for a dry etching process. The meltallizing method comprises the steps of firstly, putting the ceramic part to be meltallized into a soaking solution for soaking; cleaning the ceramic part with pure water and drying; shielding the ceramic part by adopting a high-temperature-resistant shielding adhesive tape and a Teflon cap, shieldinga non-meltallizing surface, and exposing the meltallizing surface; carrying out sand blasting treatment on the meltallizing surface, and then carrying out plasma spraying on the meltallizing surface;then removing the high-temperature-resistant shielding adhesive tape and the Teflon cap which shield the ceramic part, and then carrying out secondary cleaning and drying; and finally, checking the appearance and the size of the meltallizing coating. According to the method, the meltallizing coating with the required thickness can be obtained, the corrosion resistance of the ceramic part is improved, and the service life of the ceramic part is prolonged.

The invention provides a punch structure and a stamping method, and belongs to the technical field of stamping. The punch structure is used for stamping a plate-shaped piece, the plate-shaped piece isprovided with a first through hole, burrs are generated at the edge of the first through hole located on one side plate face of the plate-shaped piece, the punch structure comprises a second punch head part, the second punch head part is used for stamping and flanging from one side plate face of the plate-shaped piece to the other side plate face of the plate-shaped piece, the edge of the stamping end of the second punch head part is a second fillet transition, and the second fillet transition is used for removing the burrs. According to the punch structure, a mode of removing burrs manuallyis canceled, and the manufacturing process is saved, so that the manufacturing efficiency of flanging is improved.

The present invention relates to a washing machine comprising: a casing having a insertion hole for inserting laundry thereinto on the front surface thereof; a tub disposed in the casing and containing laundry water and having an inlet communicating with the insertion hole; a drum, rotatably disposed within the tub, for accommodating laundry; a pump for pumping water discharged from the tub; a gasket for making the insertion hole communicate with the inlet of the tub and having a plurality of nozzles for spraying water into the drum; and a nozzle water supply pipe, fixed to the gasket and having an inlet through which water pumped by the pump flows, for dividing and guiding water that has flowed through the inlet into a first sub flow and a second sub flow, the nozzle water supply pipe including a plurality of first nozzle water supply ports, formed on a first flow passage to which the first sub flow is guided, for supplying the first sub flow individually to any two or more nozzles among the plurality of nozzles, and a plurality of second nozzle water supply ports, formed on a second flow passage to which the second sub flow is guided, for supplying the second sub flow individually to other two or more nozzles among the plurality of nozzles.

The invention relates to a production equipment for cables with braided shielding layers, in particular to a device for removing burrs from the metal braiding layer of cables, which includes a cleaning assembly and tension plates arranged at both ends of the cleaning assembly to tension it, and the cleaning assembly consists of Composed of several friction strips, the combination of the friction strips forms channels distributed along the length direction to remove burrs on the metal braided layer of the cable passing through the channel, and the tension plate is provided with a the through hole of the channel. The invention is simple in structure and easy to use. Only need to pass the cable braided wire core through the channel formed by the combination of friction strips to remove the burrs on the cable braided wire core, which is simple, convenient and fast, and greatly reduces the labor of workers. Strength, at the same time, by rotating the connection end, the size of the channel can be adjusted to adapt to cables of different specifications, so that the friction strip can smoothly remove burrs without wrinkling the cable braid.

The invention discloses a silicon dioxide extraction process based on highland barley husks, and belongs to the technical field of material recovery. During extraction, the process includes washing the highland barley husks with water, and drying and smashing the husks to obtain highland barley husk powder; carrying out hydrothermal carbonization reaction on the highland barley husk powder and a sulfuric acid solution, instantly releasing pressure, discharging, performing filtration, collecting a filter cake, and washing the filter cake with deionized water until a washing solution is neutral;freezing the washed filter cake with liquid nitrogen, grinding the filter cake, and unfreezing to obtain an unfrozen material; pouring the unfrozen material into a saturated ammonium nitrate solution, removing surface floaters, collecting lower-layer precipitates, and performing vacuum freeze drying on the lower-layer precipitates to obtain a refined material; putting the refined material into atubular furnace, slowly heating in an oxygen atmosphere, calcining the material, cooling and discharging to obtain a calcined material; and repeatedly washing the obtained calcined material with water, and carrying out vacuum freeze drying to obtain refined silicon dioxide, thereby completing the silicon dioxide extraction process of the highland barley husks. The silicon dioxide extraction rate is high, and the product has high purity.

The invention discloses a device capable of removing soldering tin of partial components on a circuit board. The device capable of removing the soldering tin of the partial components on the circuit board comprises a shell; a working cavity with an upward opening is formed in the shell; a slide block is arranged on the lower wall of the working cavity in a mobile manner; an advancing cavity is formed in the slide block; a screw rod is slidingly arranged on the left and right wall of the advancing cavity in a communication manner; an annular cavity with an inward opening is formed in the side wall of the working cavity in a surrounded manner; an annular rack is arranged on the lower wall of the annular cavity; a steering wheel is fixedly connected to the right end of the screw rod; the lower end of the steering wheel is engaged with the annular rack; and a switching wheel is connected to the screw rod through threads. According to the device capable of removing the soldering tin of thepartial components on the circuit board, the soldering tin of the components on the circuit board can be selectively removed, and the components can be taken off; when the circuit board is put into the device, the circuit board can be well fixed by a clamping device so as to smoothly remove the soldering tin; during removing the soldering tin, the removing device can move in all directions so as to remove the soldering tin in each position; and moreover, during removing the soldering tin, the soldering tin is removed through vacuum suction so that the device is convenient and fast.