400results about How to "Avoid recontamination" patented technology

A device for mixing two paste like compounds, such as a dental molding compound using a catalyst for the acceleration of polymerization. The housing has a mixing area with at least two inlet openings for the compounds and an outlet opening for the mixed compound. The device also has a mixing element that is disposed in the mixing area and propelled around a longitudinal axis. The housing has a coupling section that is situated in front of the mixing area with two coupling openings for connecting with two dispensing openings of a device for dispensing the two paste like compounds. The first and second ducts connect to the couplings via the coupling openings extending through the coupling section into the inlet openings for the mixing area. The two ducts are formed so that the first duct requires a greater time of entry of the compound into the mixing area than the time required for the second compound flowing through the second duct.

A self-powered self-contained electrolysis device, for placement into a reservoir of a contaminated electrolytic solution, such as water, containing halide ion, such as chloride ion, to electrolyze the water, thereby disinfecting or sterilizing the contaminated reservoir of water. Contaminated reservoirs of water can be water containers filled with river water and other outdoor sources, or can be contaminated municipal water held in kitchen containers, cooling systems, water tanks, cisterns, etc. The self-contained body allows the electrolysis device to float on or remain self-contained in the reservoir water. Preferred devices are small and portable, and comprise reliably productive electrolysis cells that are powered by batteries. A means for propulsion of the device can also be provided, and is preferably a pump that pumps the water through the electrolysis cell.

A vacuum cleaner is provided. The vacuum cleaner includes a main body in which a suction generating unit is disposed, a dust collection unit detachably mounted on a front portion of the main body and having a primary cyclone unit for separating dusts contained in air, a secondary cyclone unit provided in the main body, and a discharge unit formed in the main body to discharge air whose dusts are separated at the secondary cyclone unit out of the main body.

The invention discloses a textile cloth dedusting device, which comprises a device body, openings are opened on both sides of the device body, and two symmetrical rollers are fixedly installed on the left end of the device body, between the two rollers room set with textile fabrics. The textile fabric dedusting equipment can drive the first rotating shaft and the second rotating shaft to rotate through the provided first pulley and the second pulley under the action of the motor, so that the two rolling brushes can simultaneously clean the upper surface and the second rotating shaft of the textile fabric. The lower surface is cleaned to effectively remove the cotton dust, cotton wool and other dust adhering to the textile fabric, achieving a comprehensive cleaning effect. Through the suction pipe set, under the action of the fan, the dust cover can The cotton dust, cotton wool and other dust cleaned by the rolling brush can be effectively absorbed, which prevents the cotton dust, cotton wool and other dust cleaned by the rolling brush from being scattered inside the equipment body, causing re-contamination of the textile fabric, and ensuring the cleaning efficiency.

The invention relates to a primer middle sequence interference PCR (Polymerase Chain Reaction) technology. The improved PCR technology is characterized in that one segment of relatively non-complemented or same-sequence basic group primer molecules in the intermediate domain of primers perform the antisense interference inside and outside so as to competitively destroy the polymerization among the primers to selectively inhibit the primer dimer (PD) from being amplified. For the interference of the intermediate domain of the primers, based on the primers optimally selected by the conventional design principle, the technology that the intermediate domain (ID) of a pair of the primers are in parallel but are not complemented with each other or are in the same sequence or / and the technology that ID antisense oligonucleotides (Oligo) are added into the primers to perform the interference action or / and the Oligo antonymy is carried out in the primer molecules via the ID so as to perform the interference action are adopted, or the combined technology of the three types of the technologies is adopted. As a result, only the ID of the primers is interfered while the target specific amplification is not influenced; the combining force acting on the minority of base-group pairing hydrogen bonds at the tail end and the base-group hydrogen bonds outside the tail end due to the action of the primers is dispersed to a maximum extent, so that the PD is selectively inhibited. Therefore, the PD accumulation in the PCR system is avoided. If the mineral oil is additionally used, the sealed primers can slowly release the hot starting and the UDG pretreatment so as to prevent aerosol glue as a byproduct of the PCR system from causing the pollution. Consequently, the nucleic acid is amplified reliably and the real-time fluorescence PCR is quantified accurately.

A decontaminating system 200 is provided that includes: (a) a decontaminating apparatus 100 including (i) an electrically conductive scrubbing shoe 104 having an inlet 204 for a gel-like material and (ii) an insulating standoff 116 positioned between the scrubbing shoe 104 and a surface 120 to be decontaminated to maintain a desired distance between the scrubbing shoe 104 and the surface 120; (b) a reservoir 216 for the gel-like material 124, the reservoir 216 being in communication with the inlet 204; and (c) a voltage source 224 in communication with the electrically conductive scrubbing shoe 104, whereby a current is passed through the gel-like material 124 applied to the surface 120, thereby removing contaminants from the surface 120.

The invention discloses a piece of intelligent fresh air and indoor air synchronous purification equipment and an intelligent fresh air and indoor air synchronous purification method. The equipment comprises a main case 13. The main case 13 is equipped with a fresh air inlet pipe 2, and the fresh inlet air pipe 2 is equipped with a valve device 1 used for opening and closing the air inlet pipe. The main case 13 is further equipped with an exhaust pipe 6, and the exhaust pipe 6 is equipped with a valve device 5 used for opening and closing the exhaust pipe. The main case is internally provided with an intelligent detection component 8 for air detection, a control component 9, an intake fan 17, an exhaust fan 7, an indoor circulation purification fan 14, an indoor air filtration and purification component 15, a fresh air filtration and purification component 3, a heat exchange component 4, an operation display component 12, and an indoor air quality display component 10. The equipment and the method of the invention can achieve a better purification effect, and are suitable for air purification under the condition of serious outdoor air pollution in our country at present stage.

The invention discloses a rotary fruit and vegetable cleaning machine, which comprises a machine body and a cover. The machine body includes an outer shell and an inner shell arranged inside the outer shell. The water inlet into the inner shell, the driving device for driving the vegetable basket to rotate, the ozone generating device, and the ozone pipeline for passing ozone into the inner shell. The cover is sealed with the surrounding of the inner shell. When ozone is used to clean fruits and vegetables in water, the lower surface of the cover is provided with a deflector for guiding the water flow to disperse and spray. When the rotation speed of the vegetable basket reaches a certain speed, the water will rise along the inner wall of the inner shell due to the centrifugal force of the rotation of the vegetable basket and the effect of the water-repelling leaves. The deflector in the form of a parabola guides and sprays the water to the vegetables close to the peripheral wall of the vegetable basket, and cleans the vegetables under the impact of relative motion. The invention has the advantages of simple structure, good effect of ozone dissolution and disinfection, and high efficiency.

The invention discloses a cleaning machine with a supporting and thrusting mechanism, which comprises a rack and a plurality of cleaning tanks, wherein a lifting bracket used for supporting material baskets is arranged in each cleaning tank; at least one side edge of each lifting bracket is connected with a lifting cross beam through a bracket connecting rod; a lifting driving mechanism mounted on the rack can drive the lifting brackets to be lifted to and fro in the vertical direction through the lifting cross beam; horizontal material basket push rods used for horizontally pushing the material baskets to move are further arranged above the cleaning tanks and are driven by a horizontal driving mechanism; fixed brackets are fixedly arranged between adjacent cleaning tanks; upper bearing surfaces of the fixed brackets are positioned in the same bearing plane as bearing surfaces of the lifting brackets lifted to high positions; and the bearing plane is higher than tank openings of the cleaning tanks. The cleaning machine has the advantages of stability and reasonableness in structure and great carrying capacity; and particularly, a cleaning and conveying path of the cleaning machine is reasonable, the effective cleaning time is long and the work efficiency is high.

The invention provides a multifunctional nanometer filter material and a preparation method; the multifunctional nanometer filter material consists of nanometer fibres and is characterized in that: according to the weight percentage, the surface and interior of the nanometer fibre comprises 3wt-10wt% of nanometer silver oxide, 0.5wt-5wt% of nanometer silicon oxide, 3wt-10wt% of nanometer titanium oxide, 0.3wt-3wt% of nanometer zinc oxide and 3wt-15wt% of nanometer active carbon. The preparation method of the invention comprises the steps as follows: polymer solution with the Berry number of 1-2 is formed firstly by mixing; subsequently, ultrasonic dispersing, static spinning, freezing, drying and carbonizing are carried out so as to gain the multifunctional nanometer filter material. The multifunctional nanometer filter material prepared by the method of the invention has the effects of effectively filtrating and blocking particulates and killing the micro-organism at the same time, and can keep the self-cleaning of the micro-organism.

A self-powered self-contained electrolysis device, for placement into a reservoir of a contaminated electrolytic solution, such as water, containing halide ion, such as chloride ion, to electrolyze the water, thereby disinfecting or sterilizing the contaminated reservoir of water. Contaminated reservoirs of water can be water containers filled with river water and other outdoor sources, or can be contaminated municipal water held in kitchen containers, cooling systems, water tanks, cisterns, etc. The self-contained body allows the electrolysis device to float on or remain self-contained in the reservoir water. Preferred devices are small and portable, and comprise reliably productive electrolysis cells that are powered by batteries. A means for propulsion of the device can also be provided, and is preferably a pump that pumps the water through the electrolysis cell.

The invention discloses a dust remover of an air conditioner. The dust remover comprises a case, a dust suction device, a fan, a dust accumulation bag and a control device, wherein the dust suction device is arranged on the top of the case, the fan is arranged behind the dust suction device, the dust accumulation bag is arranged below the dust suction device, and both the dust suction device and the fan are connected with the control device. According to the dust remover of the air conditioner, the fan continuously rotates, so that dust in the air conditioner is blown, and then the blown dust is sucked by the dust suction device and then falls into the dust accumulation bag, so that a good cleaning effect on the air conditioner is achieved, a person does not need to climb high to clean the air conditioner, the operation safety of the air conditioner is increased, and the problem of difficulty in cleaning the air conditioner is preferably solved.

The invention discloses a recycling method for treating sludge containing heavy metals, which comprises the following steps: leaching out heavy metals in sludge containing heavy metals by using acid liquor, carrying out ultrasonic treatment on the acid leaching liquor, carrying out solid-liquid separation to separate precipitate containing calcium sulfate from acid liquor containing heavy metal ions, treating the leached acid liquor with ferrous sulfate, regulating the pH value of the acid liquor, and adding ferrooxidant to oxidize the acid liquor, thereby forming ferrite; and washing and drying the calcium sulfate precipitate to form plaster. The invention is suitable for treating various kinds of sludge containing heavy metal ions, has the advantages of favorable technique universality, simple technological conditions and strong operability, and can realize large-scale production. The invention can treat waste by using waste, save energy, reduce emissions and realize harmless resource recycling.

The invention relates to a non-seal aluminum composite germ-free pillow packing machine, comprising a paper drum, a paper receiver, a paper releaser, an air inlet, a hydroperoxide groove, a hydroperoxide blade, a guiding roller, an atomization nozzle, a paper feeder, an ultraviolet lamp, a germ-free room, a shaping corrector, a counting pot, a shaping wheel, a longitudinal sealing device, a marking device, a paper drawer, a pouring tube, a transverse seal, a cutter, a discharge sliding groove, an air discharger, a body, an operation panel, an appliance control box, and a germ-free hot air treating device. The invention eliminates former longitudinal sealing device to realize longitudinal seal without sealing bar to save cost, while the packed volume can be stepless adjusted, with better disinfection effect and low cost.

The invention relates to a production method for aramid fiber 1414 paper substrate material, which comprises the following steps of uniformly mixing aramid fiber 1414 chopped fiber size, modified thermoplasticity fiber size and aramid fiber 1414 pulp fiber size and then defibering; adding maleic anhydride-acrylic copolymer for mixed pulp dispersing; then regulating the concentration of the pulp and forming and hot pressing the obtained pulp suspension through manufacture paper with pulp so as to obtain aramid fiber 1414 paper substrate body paper; dipping the aramid fiber 1414 paper substrate body paper in polyimide resin glue solution, and removing volatile solvent after drying so as to obtain the aramid fiber 1414 paper substrate material. The preparation method is environment-friendly, metal ion can be prevented from contaminating the fiber again, the problem of a conventional dispersing agent generating bubbles in manufacture paper with pulp process is solved, the defect of adding a third fiber and organic resin alone is overcome, the physical property, resistance to high temperature and insulating property of the produced end product paper are greatly improved, and the functional index of the high performance aramid fiber 1414 paper substrate material can be fully achieved.

The invention provides a sludge curing agent as well as a preparation method and a use method thereof. The sludge curing agent comprises a liquid composition and a solid composition, wherein the dosage of the liquid composition accounts for 1-6% of the dosage of sludge; the dosage of the solid composition accounts for 1-6% of the dosage of sludge. The sludge curing agent provided by the invention can reduce the sludge water content from 75-85% to 45-60% via the synergistic effect of chemical modification and mechanical dehydration, reduces sludge size, lowers the transportation cost, and facilitates the disposal of the sludge in the later stage; toxic and side products cannot be introduced or generated in sludge dehydration-conditioning and dehydration processes in the invention, to avoid environmental pollution.

The invention relates to a rinsing air purification technology and in particular relates to a cold-hot type rinsing air purification device using a multilayer staggered spray mode. The cold-hot type rinsing air purification device using the multilayer staggered spray method comprises a water storage tank, a spray tank, a water supply pipe, a water pump and an exhaust fan, wherein the water storage tank comprises a wastewater storage tank, a clear water storage tank, an electronic refrigerator, an electronic heater, an isolation plate and a wastewater filtration screen; the spray tank comprises a spray tank shell, a spray plate, a spray pipe, an air inlet, an air outlet and an air filtration screen; the spray plate, the spray pipe, the air inlet, the air outlet and the air filtration screen are arranged in a tank body; due to the adoption of the multilayer staggered spray method and a curve air flowing path, an equipment resource can be used to the greatest extent; air is fully sprayed and washed, so that the best purification effect can be achieved; the temperature of the air in a room can be adjusted according to the requirement during purifying of the air; the device can be used as an indoor moving air purifier, can be mounted on the wall to be used as an air purification window, and can be applied to spray purification towers for purifying industrial waste gas generated during waste incineration; the defects that a filter element is blocked and parts are frequently replaced can be avoided.

The invention relates to a material for purifying and processing drinking water, which is made of high-temperature sintering tourmaline nanometer powder, alkali mine powder, metal magnesium and the like. The invention is characterized in that the material for purifying drinking water contains 5 to 30 weight percentages of sea shell powder, 10 to 40 weight percentages of tourmaline nanometer powder, 10 to 40 weight percentages of alkali mine powder and 2 to 20 weight percentages of metal magnesium. The invention has convenient utilization and low price, can effectively remove the foreign odor in water, has the functions of resisting bacteria and mineralizing, activating and minifying water molecular groups of the drinking water and enables the human body to achieve pH value balance.

The invention concerns an apparatus for cleaning the edge of a wafer that may be relatively simply constructed with low cost, and prevent the wafer from being re-contaminated by the edge cleaning, thus resulting in increase of the yield rate of wafers. The apparatus includes a cleaning agent ejection nozzle body provided on a side part of a chuck for ejecting a particulate cleaning agent (CO2 particles) towards the side and the edge portions of the wafer held and rotated by the chuck, and a nozzle body carriage for moving the nozzle body between rest and cleaning positions.

The invention discloses efficient low-foam normal-temperature phosphorous-free oil removing liquid. The oil removing liquid consists of the following components in percentage by weight: 3.0-7.0 wt% of alkylphenol polyoxyethylene ether, 1.0-5.0 wt% of fatty alcohol polyoxyethylene ether, 1.0-5.0 wt% of fatty acid methyl ester polyoxyethylene ether sulfonate, 0.5-4.0 wt% of linear alkylbenzene sulfonate, 10.0-30.0 wt% of carbonate, 4.0-15.0 wt% of sodium metasilicate pentahydrate, 5.0-15.0 wt% of sodium hydroxide, 4.0-12.0 wt% of sodium citrate, 0.5-1.0 wt% of redeposition resisting agent, 2.0-5.0 wt% of complexing agent, 0.1-0.3 wt% of defoaming agent, 1.0-3.0 wt% of corrosion inhibitor, 0.01-0.1 wt% of flocculating settling agent, and the balance of water. The oil removing liquid has the characteristics of cost saving, improvement of oil removing efficiency and economic benefit.

The invention discloses an aluminum sheet dedusting and conveying roller comprising driving roller, driven roller, a supporting frame, a dust collector, a ventilation hood, adjusting hanging rods, a roller brush and a drive motor. The motor is arranged at the bottom of the supporting frame. The driving rollers are symmetrically arranged on columns on two sides of the supporting fame, respectively. The driven rollers are symmetrically arranged above the driving rollers respectively. The roller brush is arranged between the driven rollers on two sides thereof. The adjusting hanging rods are arranged at two ends of the roller brush, respectively. An air channel is arranged between the top of the ventilation hook and the dust collector. According to the arrangement, the driving rollers are used with the driven rollers to convey the aluminum sheets, and meanwhile, dusts and foreign materials on the surface of the aluminum sheet are raised by the roller brush and collected by the ventilation hook and the dust collector, thus secondary pollution is avoided, thorough cleaning is achieved, and spray lacquer surface quality can be improved.

The invention relates to a water-proof ceramic tile cleaning agent. Components and mass part of the components are organic acid 12-17 parts, a non-ion surface active agent 3-6 parts, a water-proof agent 3-5 parts, a slow release agent 2-4 parts, a thickening agent 2-4 parts and ammonia water 2-5 parts. The water-proof ceramic tile cleaning agent has a water-resistant function, can prevent a ceramic tile from being polluted again, reduces cleaning frequency, and is safe and environment-friendly.

The invention relates to the field of energy, in particular to a method for producing biogas by taking Entermorpha as a material. The method comprises the following steps: (1) the Entermorpha is rinsed by water; (2) the Entermorpha obtained in step(1) is crushed until the grain size of the Entermorpha is between 0.5 and 2mm; (3) the Entermorpha obtained in step(2) is placed into a fermentation device and added with inoculum, and the weight ratio of the inoculum TS(total solid content) to the Entermorpha TS(total solid content) is between 1 to1 and 1 to 5; (4) the fermentation device is added with fresh water, and the total solid content in the fermentation device is adjusted to between 2.5 and 10 percent; (5) alkali is added into the fermentation device, and the initial pH value of the mixture obtained in step(4) is controlled to between 6.5 and 7.5; and (6) the fermentation device is sealed and placed in the thermostatic water bath, and the fermentation temperature is controlled to between 32 and 38 DEG C. The method has the advantages of realizing the resource utilization of the Entermorpha, having simple process and easy operation, improving the marine environment and producing the energy product of biogas.

The invention relates to a complex enzyme preparation for sewage treatment. The complex enzyme preparation is compounded by mixing complex enzyme and mineral water, wherein the weight ratio of the complex enzyme to the mineral water is 1:9-50; and the complex enzyme contains the following components in volume content: 50 to 80 mg / L of bromelain, 50 to 80 mg / L of papain, 15 to 30 mg / L of L-aspartase, 15 to 30 mg / L of glutathione, 100 to 150 mg / L of yeast extract and 50 to 80 mg / L of cellulose. The complex enzyme preparation improves the treatment capability of a sewage plant, reduces the running cost, basically achieves zero release of residual organic sludge, prevents environmental secondary pollution of the sewage treatment, improves the self-purification capability of yielding water of the sewage plant, prevents secondary pollution of the yielding water, prevents secondary eutrophication of the yielding water, and radically solves the problem of environmental protection in operation of the sewage treatment plant.

The invention discloses a preparation method for high-toughness monofilament blended cotton yarn. The preparation method comprises the following steps of carrying out cotton feeding, rolling, cotton carding and drawing to obtain rough yarn after carrying out cotton opening and scutching on long staple cotton, fine staple cotton, prefabricated monofilament materials and mixed cotton, and obtaining the high-toughness monofilament blended cotton yarn through spinning and spooling, wherein the prefabricated monofilament materials are obtained through draining and drying after carrying out primary boiling and dehydrating, primary steaming, secondary boiling and dehydrating, secondary steaming, standing, bleaching and washing. The high-toughness monofilament blended cotton yarn prepared by the preparation method has the characteristics of high toughness, low cost and the like, meanwhile, the air permeability is good, and the comfort is strong.

The invention discloses a recycling method of a waste printed circuit board. Chemical-biological joint leaching is used for lixiviating metal in the waste printed circuit board by using strong acidity and high ferroic of pickling waste water. The recycling method includes the steps of conducting chemical leaching by using the pickling waste water to lixiviate Pb, Zn, Al, Fe, Sn and the like metal completely till the leaching rate of Cu reaches to 30% and over, and adding domesticated acidithiobacillus ferrooxidans to conduct microbial leaching till the leaching rate of Cu reaches to 90% and over. By adoption of the recycling method, the waste printed circuit board and the pickling waste water can be utilized comprehensively, the principle of using waste to eliminate waste is fully carried out, maximal resource recycling and treatment of the two wastes are achieved, not only the heavy metal in the waste printed circuit board is leached completely, but also the effective treatment of the pickling waste water is achieved.

The invention discloses an eluting agent for repairing organic matter and heavy metal compound contaminated soil, an eluting method of the compound eluting agent and an eluting agent recycling method,wherein the eluting agent is prepared by compounding Tween 80 and EDTA. The eluting method comprises the following steps: adding the eluting agent into the contaminated soil, oscillating, mixing, centrifugally separating an eluting solution, adding the compound eluting agent solution again into the soil subjected to first-time eluting, performing secondary elution, and repeating for four times. The eluting agent recycling method comprises the following steps: transferring the separated eluting solution into a photoelectric recovery device, adding sodium persulfate and sodium sulfate electrolytes, turning an ultraviolet lamp and a power supply for photoelectric treatment for 2.5 hours to selectively degrade organic matters in the eluting solution and recover heavy metals. The compound solution of the Tween 80 and EDTA-2 Na is used, a plurality of times of continuous eluting are carried out, a photoelectric synergistic persulfate method is adopted to regenerate the eluting agent, and the organic matter and heavy metal compound contaminated soil can be effectively repaired synchronously. The method has the characteristics of simple process, convenience operation, short time consumption, high efficiency and the like.

The invention discloses a comprehensive repair method of heavy metal contaminated soil and application, and belongs to the technical field of environmental pollution control and new energy. The method provided by the invention comprises the following steps: cultivating sorgos on the heavy metal contaminated soil to absorb heavy metals via the sorgos, harvesting the sorgos after the sorgos are ripe, crushing the sorgo straws, performing solid fermentation, distilling to recycle ethanol in the fermentation product after fermentation, primarily drying the distillation residues, combined firing the distillation residues with crop roots and leaves, and recycling and treating the heavy metals in the ash. The method provided by the invention has the advantages of high crop biomass and high heavy metal absorption efficiency, meanwhile, the produced straws can be used for fermenting to produce biofuel, such secondary pollutants as biogas slurry and biogas residue can not be produced after fermentation, thus the environmental benefits are good; ears of sorghum can be used for producing a culture medium or used as a feed, thus having huge social benefit and economic benefit and being suitable for industrial promotion.