32results about How to "Fewer cleaning steps" patented technology

The present invention relates to a method for acidic surface etching of a silicon wafer, such as those used for solar cells, comprising contacting at least one surface of a silicon wafer as cut with an acidic etching agent, provided that the wafer is, prior to the acidic etching, not subjected to an alkaline etching step or process. Further, the present invention is directed to Si wafer, photovoltaic cells, PERC photovoltaic cells and solar modules produced according to the method of the present invention.

The embodiment of the invention provides a cleaning method and device of an air-conditioner, and relates to the technical field of air-conditioners. The problem of unnecessary cleaning steps which are likely to exist in the cleaning process of an evaporator of the air-conditioner using the existing air-conditioner cleaning method is solved. The cleaning method comprises the steps of acquiring a current running state of the air-conditioner; determining a cleaning mode corresponding to the current running state of the air-conditioner, and cleaning the evaporator of the air-conditioner according to the cleaning mode corresponding to the current running state of the air-conditioner. The cleaning method and device of the air-conditioner are used for cleaning the air-conditioner.

The invention discloses a cleaning and drying device for medical instruments. The cleaning and drying device comprises a fixing box, wherein buffering devices are fixedly connected to two sides of thebottom part of the inner wall of the fixing box, and a cleaning box is fixedly connected to the top parts of the buffering devices; protecting devices are fixedly connected to two sides of the top part of the cleaning box, and one sides of the protecting devices are fixedly connected to the fixing box; the top part of the inner wall of the fixing box is fixedly connected to a shaking device through a supporting frame, the top part of the shaking device is in sliding connection with the top part of the inner wall of the fixing box, and the bottom part of the shaking device is fixedly connectedto the cleaning box; and the top part of the inner wall of the cleaning box is fixedly connected with first motors through supports. The invention relates to the technical field of medical instruments. According to the cleaning and drying device for the medical instruments, the problem that an existing medical cleaning is low in cleaning speed due to manually cleaning is solved, the work load ofpeople is relieved, the cleaning effect is improved, the working efficiency of the people is improved, and the functions of a medical cleaning device are increased.

The invention relates to a device and a process for preparing a high-molecular aluminum salt coagulant by using sludge of a high-salinity wastewater zero discharge system. Impurities in wastewater are removed in advance through optimal design of a process flow, and the content of Al2O3 in dechlorination precipitates is increased; and the dechlorination precipitate is used as a raw material to prepare a polymer aluminum salt coagulant such as PAC or polyaluminum sulfate (PAS), so that the problem of solid waste discharge is solved, and the running cost of a zero emission system is compensated at the same time. The indexes such as the mass fraction, the basicity and the heavy metal content of the prepared PAC or PAS aluminum oxide respectively meet the requirements of water treatment agent national standards of water treatment agent polyaluminum chloride (GB / T22627-2014) and water treatment agent polyaluminum sulfate (HG / T5006-2016), and the concept of solid waste recycling can be realized.

The invention belongs to the field of sanders, and particularly relates to a wood-plastic sander. The wood-plastic sander comprises a machine frame, a machine case, a sanding component, a dehairing component and a conveyor belt, wherein the sanding component and the dehairing component are sequentially arranged on the machine frame arranged in the machine case with one in front of the other, the conveyor belt is arranged on the machine frame, a storage platform is arranged outside the machine case, the sanding component comprises a sanding frame, two transmission rollers, and a sanding belt arranged on the transmission rollers in a sleeved mode, the sanding frame comprises a lower frame body and an upper frame body, the upper transmission roller and the lower transmission roller are erected on the upper frame body and the lower frame body respectively, the upper frame body and the lower frame body are connected through a connecting kit, the dehairing component comprises a dehairing frame and a dehairing roller arranged on the dehairing frame, the dehairing roller is a steel wire roller with steel wires densely distributed on the surface of the roller, and transmission roller kits are arranged on the inner sides of a front plate and a rear plate of the machine case and between the lower frame body and the dehairing frame. According to the sander, the sanding component and the dehairing component are combined, burrs are left on the surface of a sanded wood-plastic plate and can be mechanically removed by means of the dehairing component, manual clearing work in the later period is omitted, and the quality of finished products is improved.

The invention discloses a Halloween pumpkin lamp. The Halloween pumpkin lamp comprises a supporting rod and a rope fixed to the left end of the supporting rod. The Halloween pumpkin lamp is characterized in that a pumpkin lamp is hung on the lower side of the rope, a moving cavity with a leftward opening is formed in the pumpkin lamp, a sliding cavity with an upward opening is formed in the lower end wall of the moving cavity, a transmission cavity is formed in the right end wall of the sliding cavity, a motor is arranged in the transmission cavity, and a control block for controlling the motor to start and rotate forwards is arranged at the right end of the supporting rod. During working of the Halloween pumpkin lamp, when candies are received in Halloween, the candies are directly received through the pumpkin lamp, when the given candies are insufficient, by controlling the turning on and off speed of a lamp body in the pumpkin lamp, insufficiency of the given candies is promoted, turning on and off of the lamp body generates the horrific lamp light effect in the pumpkin lamp, the horrific atmosphere is improved, and interestingness of entertainment is improved.

The invention provides an adenosylmethionine separating and purifying method, and relates to the technical field of bioengineering. The method comprises the following steps: S1, cell wall breaking; S2, column chromatography purification; and S3, crystallizing and purifying; In the step S1, acetic acid and sulfuric acid with solvent in a volume ratio of (5-10): 1 are added in the wall breaking process, so that micromolecule dissolution can be effectively ensured, macromolecules in cells are intercepted, the impurity removal step in subsequent treatment is effectively reduced, the yield of the adenosylmethionine is increased, mixed macroporous resin is used in the column chromatography purification process, and impurities can be effectively removed by controlling the volume ratio of the macroporous resin. According to the adenosylmethionine separating and purifying method, the purity of the obtained adenosylmethionine is high, the yield of the finally obtained adenosylmethionine is 80% or above, and the purity of the finally obtained adenosylmethionine is 99.5% or above.

The high-wear-resistance ball screw comprises a supporting seat, one end of the side face of the supporting seat is fixedly connected with a motor, the output end of the motor is connected with a first belt wheel assembly, the first belt wheel assembly is connected with a first guide wheel, and the first guide wheel is connected with a second belt wheel assembly; the other end of the second belt wheel assembly is connected with a second guide wheel, and the two ends of the second guide wheel are connected with first bevel gear assemblies. According to the high-wear-resistance ball screw and the production method, a first belt pulley assembly drives a roller and a cleaning rod to rotate through a second bevel gear assembly, a gear assembly, a first worm and gear assembly, a fourth belt pulley assembly and a second worm and gear assembly correspondingly, and the roller conducts forming treatment on the rotating ball screw; and the brush on the edge of the cleaning rod conducts secondary cleaning on the ball screw, follow-up polishing operation is prevented from being affected, the use efficiency of the motor is improved, and waste is reduced.

The invention discloses an intelligently-controlled shellfish product washing device, and belongs to the technical field of aquatic product production devices. The intelligently-controlled shellfish product washing device comprises a transmission mechanism, an impeller, a housing, a net barrel and a bucket, wherein the transmission mechanism is located in a bottom cavity formed by the sleeving connection of the housing and the bucket; a decelerator at the upper end of the transmission mechanism is connected with the impeller in the net barrel through a rotating shaft; the impeller comprises alarge impeller and a center impeller located at the central position of the large impeller; the central impeller, the large impeller and the bucket can be in reciprocating rotation motion in the clockwise direction, in the anticlockwise and in the clockwise direction at the same time; a water inlet valve is arranged on the upper side wall of the housing, and a drain valve is arranged on the lowerside wall of the housing; an outer cover body is arranged on the housing; a control panel is arranged on the upper plane of the housing; and the net barrel is arranged in the bucket in a manner that the net barrel can be taken out. Through the adoption of the intelligently-controlled shellfish product washing device disclosed by the invention, the working procedure of washing shellfish products can be intelligently controlled, the number of washing the shellfish products at a time is large, the washing efficiency is high, and the intelligently-controlled shellfish product washing device is labor-saving and practical. The surface of the impeller is coated with a layer of compact waterproof coating.

The invention relates to a novel stock fluid deironing method and a device, which is characterized by comprising a stock fluid deironing process and a magnetic rod washing process, wherein the tock fluid deironing process is that: the stock fluid flows upwards from the bottom part of a vertical cavity, and the stock fluid flows out to a stock groove from an outlet on the side surface of the upperpart of the cavity after being deironized by a permanent-magnetic body rod which is vertically arranged inside the cavity; and the magnetic rod washing process is that: the stock fluid deironing process is firstly stopped, then a scraping sleeve which is previously arranged on the top part of the permanent-magnetic rod is moved downwards along the permanent-magnetic body rod through a power mechanism, so the ferromagnetic substance which is attached onto the permanent-magnetic body rod is scraped onto a non-magnetic conductive material rod on the lower end of the permanent-magnetic body rod, the ferromagnetic substance is washed away from the non-magnetic conductive material rod on the lower end of the permanent-magnetic body rod through a washing device, the washed-away ferromagnetic substance is discharged through a drain valve which is arranged below the cavity, and the scraping sleeve is pulled back to the top part of the permanent-magnetic rod through the power mechanism so as toreprocess the stock fluid deironing process. Compared with the prior art, the novel stock fluid deironing method has the advantages that the cleaning steps are fewer, the actuating mechanisms are fewer and the actuating mechanism is free from being influenced by the penetration of the stock.

The invention discloses a drill pipe riser device for hydrogeological detection and relates to the technical field of geological detection. The drill pipe riser device for hydrogeological detection comprises a bottom plate, wherein a hydraulic driving device is fixed to the top of the right side of the bottom plate, a self-locking hydraulic oil cylinder is arranged on the left side of the hydraulic driving device, the bottom of the self-locking hydraulic oil cylinder is fixed to the top of the bottom plate, and an output shaft of the self-locking hydraulic oil cylinder is located at a left end and fixed to the right side of a pushing vertical plate. According to the drill pipe standing device for hydrogeological detection, the position of the pushing vertical plate can be controlled by arranging the hydraulic driving device, the vertical pipe plate can be kept at a certain inclination angle by moving the pushing vertical plate, and then a drill pipe at the top of the vertical pipe plate can be erected, so automatic mechanical pipe standing is achieved, manual pipe standing is not needed, after the drill pipe inclines by a certain angle, due to the self-locking characteristic of the self-locking hydraulic oil cylinder, the vertical pipe plate and the drill pipe can be kept in a relatively stable state.

The invention relates to the technical field of organic synthesis, and particularly discloses a preparation method of methylamine acetate ionic liquid. The preparation method comprises the following steps that acetic acid is added into a methylamine solution, intermittent reaction is conducted 5-6 times under the microwave conditions that the temperature ranges from 5 DEG C to 10 DEG C, the power ranges from 100 W to 200 W, the frequency is 2450 MHz, an ionic liquid mixture is obtained, and the intermittent reaction conditions are that the microwave radiation time ranges from 1.5 min to 2.5 min, the first intermittent time ranges from 2 min to 3 min, the (n + 1) th intermittent time is 20 s to 40 s longer than the nth intermittent time, and n is larger than or equal to 1 and smaller than or equal to 5; and carrying out reduced pressure rotary evaporation on the ionic liquid mixture to obtain the methylamine acetate ionic liquid. The intermittent microwave reaction method is adopted to prepare the ionic liquid, no organic solvent is added, the reaction yield is remarkably improved, the impurity removal step is reduced, the reaction rate is high, and the method has important significance on wide application of the acetic acid methylamine ionic liquid.

The present invention relates to the field of medical conductive liquid, in particular to a conductive liquid for electroencephalogram sensors, comprising the following components in mass percentage: 2%-10% of salt electrolyte, 0.1%-1% of lipase, and 2%-20% of moisturizing agent , gel forming agent 10%-20%, preservative 0.1%-1%, the rest is deionized water, and the pH value of the electroencephalogram sensor conductive liquid is 8-9. Lipase is added to the conductive liquid of the EEG sensor of the present invention, and the conductive liquid is adjusted in the optimum pH value range, so that the conductive liquid is enzymatically decomposed into fatty acid sodium when it contacts grease, reducing the interference of grease to the electrodes for collecting human body electrical signals, Increase the sensitivity of the electrodes for signal collection and the test accuracy of the EEG sensor.

The invention relates to an L ED module three-proofing paint spraying clamp and an application method thereof; the clamp comprises four crossbeams connected in sequence to form a sealed rectangle; four sides of the crossbeams are respectively provided with a groove and a channel outside the groove; the clamp also comprises four corner connectors, and two adjacent edges of the corner connector are provided with holes; a plurality of support racks are relatively arranged on two opposite crossbeams, and the support rack comprises a rack body, and a handle and a boss arranged on the rack body; the center of the handle is provided with a hole; the boss is provided with a positioning rod; bolts movably connect the four crossbeams in a whole body through the four corner connectors, and movably connect the support racks on the crossbeams; the method can adjust positions of the crossbeams and support racks, so the positioning rods on the support racks can fix positioning holes on the module; when four positioning holes of the module are fixed by the positioning rods, spray paint work can be carried out on the module. An existing clamp is long in adjusting time, easy to loosen, single in usage product, and can pollute the module; the L ED module three-proofing paint spraying clamp can solve the said problems, and simple and easy in operation method.

The invention discloses a rapid extraction method of immunoglobulin Y and application of the immunoglobulin Y to preparation of an anti-hand, foot and mouth disease product. The rapid extraction method comprises the following steps: laying hens are immunized with a tetravalent enterovirus vaccine of EV71, CoxA16, CoxA10 and CoxA6, and a bacterial vaccine of escherichia coli and staphylococcus aureus; eggs are separated mechanically and automatically to obtain egg yolks, and a citric acid-disodium hydrogen phosphate buffer solution is adopted to dilute and stabilize a pH value of an egg yolk solution; dry ice is added to rapidly reduce the system temperature; continuous high-speed low-temperature centrifugation is performed to remove lipid particles and obtain immunoglobulin Y supernatant;the immunoglobulin Y supernatant passes through a double-layer filter membrane of 2-6[mu]m and 0.3-0.8[mu]m sequentially, and a hollow fiber ultrafiltration membrane with molecular weight cut-off of 300kD to remove impurity protein, and finally the immunoglobulin Y supernatant passes through the hollow fiber ultrafiltration membrane with the molecular weight cut-off of 100kD to obtain a concentrated immunoglobulin Y solution; and auxiliary materials are added to prepare a spray for skin and mucosas of mouth and nasal cavity. The method has the advantages of high automation degree, low energy consumption, large output, green and environmental protection, large-scale industrial production and the like.

The invention provides an antibacterial product based on gold nanoparticles, the antibacterial product includes an antibacterial layer and a substrate, the antibacterial layer includes gold nanoparticles modified by DAPT, the surface of the substrate is negatively charged, the antibacterial layer The antibacterial product is combined on the surface of the base material through electrostatic interaction, and the negative charge on the surface of the base material is obtained by treating the base material in a plasma cleaning device. The preparation method and application of the antibacterial product are also provided.