101results about How to "Reduced bactericidal effect" patented technology

Antimycotic compositions comprising a rhamnolipid component and related methods of use.

The invention relates to a new can processing method which is applicable to a berry raw material and a berry can processed through the method, and the can processing method is characterized in that the tissue improvement method in line with the characteristics of berry is adopted, a calcium preparation and the sugar impregnation are combined for treatment so as to increase the strength of the skin part and pulp part of the berry, and the complete and due taste of fruit granules can be maintained during the follow-up heat treatment process; a formula with special flavor and nutritional attributes is utilized for the preparation of canned soup, thereby greatly improving the health-care and beautifying effects of the product; according to the actual nutritional requirement of the berry raw material, a safe thermal sterilization way is adopted, the thermal degasification temperature and sterilization temperature in the traditional process are reduced by about 10 DEG C, the nutritional value and sensory quality of the product are better protected, the natural taste of the berry raw material is maintained, energy is saved, and the can processing method can be maturely applied to berry can products and is applicable to actual situations of the majority of can food production enterprises.

The invention discloses a water-borne polyurethane synthetic leather size and a preparation method and an application thereof. The water-borne polyurethane synthetic leather size comprises diisocyanate, poly dibasic alcohol, phosphoric acids, catalysts, hydrophilic chain extenders, neutralizers, small molecule chain extenders or cross-linking agents, surface active agents and the like. The preparation method of the water-borne polyurethane synthetic leather size includes (1) polymerizing the diisocyanate, the poly dibasic alcohol and the phosphoric acids under the action of the catalysts; (2) adding the hydrophilic chain extenders for chain extension; (3) cooling and neutralizing a reaction solution, and continuing the reaction by adding the small molecule chain extenders or cross-linking agents and the surface active agents; and (4) emulsifying and adding auxiliaries to uniformly stir. According to the water-borne polyurethane synthetic leather size and the preparation method and the application thereof, the phosphoric acids are added in the formula, the wettability of the ultimately prepared synthetic leather size and non-woven fabrics is improved, further the process for preparing the synthetic leather can be simplified, properties of the prepared synthetic leather are improved, simultaneously the feed ratio of the diisocyanate and the poly dibasic alcohol is strictly controlled, and the ultimately prepared synthetic leather has the advantages that the peel strength and the hand feeling are good, and the rebound resilience is moderate.

The invention discloses bioactive chilli sauce, which is prepared by mixing and boiling salt, gourmet powder, chilli fermented by lactic acid bacteria and sugar, ginger, garlic, onion and soybean paste fried with sunflower seed oil. The bioactive chilli sauce is prepared by the following steps of: pulping a chilli raw material, and inoculating lactic acid bacteria for fermentation; weighting the fermented chilli, sunflower seed oil, white granulated sugar, ginger, garlic, onion, soybean paste, gourmet powder and edible salt raw materials in a certain ratio; and frying the sugar, the ginger, the garlic, the onion and the soybean paste with the oil, and then adding the pulped fermented chilli, the salt and the gourmet powder, wherein the raw materials fried with the oil also can be added with carrot. The bioactive chilli sauce product has the characteristics of mild peppery taste, suitable sour and sweet taste, aromatic flavor, and mild and long aftertaste, has good quality, good color, aroma and taste, does not contain any non-natural components, is safe and healthy for eating and suitable for industrial production, and has good economic and social benefits.

The invention discloses a novel bactericidal corrosion inhibitor. The corrosion inhibitor comprises the following components in percentage by mass: measured by the mass of the composition as 100%, 1-30% of biquaternary ammonium salt of quinoline and alkyl tertiary ammonium, 1-30% of biquaternary ammonium salt of alkyl tertiary ammonium, 1-15% of organic urea compound, 1-10% of organic amine compound, 1-20% of alkyl quaternary ammonium salt, 1-10% of glutaraldehyde, 1-10% of alkynyl alcohol, 1-10% of higher fatty acid amides derivative, 1-10% of alkylphenol polyoxyethylene polyoxypropylene ether and the balance of water; the corrosion inhibitor disclosed by the invention can control the corrosion of media with different oil-water ratios in the oil well output liquid of an oil-gas-water gathering and transportation system in the oilfield production, when the corrosion inhibitor addition reaches 100mg / L, the inhibition rate can reach above 75%, the corrosion rate can be controlled at below 0.076mm / a, the sterilization rate reaches above 99%, and the problems that the adaptation range of a commercially available corrosion inhibitor to the change in the properties of the media of the oil well output liquid is small, the inhibition rate is low, the emulsion affects demulsification and the commercially available corrosion inhibitor can not control the bacterial reproduction of the medium are solved.

The invention relates to a method for preparing the medical dressing agent used after burn operation, wherein it comprises that: compositing carboxyethyl polymer 60-70% (w / w) and dodecyl polyoxyethylene 40-30% (w / w) into macromolecule compound as A group; mixing 40-50ml propanediol, 40-50g glycerin, 60-70g liquid wax, and 1000ml pure water with high shearing into mixture B group; preparing 20-30g emulsified silicon oil and 10-20g soluble laurone into mixture C group; mixing and strengthening 20-30 tea oil and 300-500g soluble tea water into solution D group; putting A group into slow-mixing reaction kettle, adding B, C, D groups to be mixed into gel sol; then dispersing sol into middle-density polyamine sponge or medical non-weave cloth to be packed. The invention can improve skin metabolism, disinfect, and improve cut healing, etc.

The invention discloses a method for preparing bioactive chilli sauce. The bioactive chilli sauce is prepared by mixing salt, gourmet powder, chilli fermented by lactic acid bacteria and sugar, ginger, garlic, onion and soybean paste fried with sunflower seed oil. The preparation process comprises the following steps of: pulping a chilli raw material, and inoculating lactic acid bacteria for fermentation; weighting the fermented chilli, sunflower seed oil, white granulated sugar, ginger, garlic, onion, soybean paste, gourmet powder and edible salt raw materials in a certain ratio; and frying the sugar, the ginger, the garlic, the onion and the soybean paste with the oil, and then adding the pulped fermented chilli, the salt and the gourmet powder, wherein the raw materials fried with the oil also can be added with carrot. The bioactive chilli sauce product prepared by the method has the characteristics of mild peppery taste, suitable sour and sweet taste, aromatic flavor, and mild and long aftertaste, has good quality, good color, aroma and taste, does not contain any non-natural components, is safe and healthy for eating and suitable for industrial production, and has good economic and social benefits.

The invention discloses a linear-hyperbranched phosphate salt surface active agent and a preparation method thereof. AB2 type monomers are synthesized, then avterminal hydroxyl hyperbranched polymer is synthesized, a long chain is introduced into the middle end of the terminal hydroxyl hyperbranched polymer, unmodified hydroxyl continues to be phosphorylated, and the linear-hyperbranched phosphate salt polymer is synthesized. The hydroxyl long chain is introduced, so that lipophilicity is improved, terminal lipophilicity is modified into a phosphate base, the prepared polymer has multi-terminal hydrophilic groups and hydrophobic groups and can be used as the surface active agent, the dispersity, flame retardance, antibacterial property, antistatic property and other special properties can be given, and excellent surface activity and biocompatibility are achieved.

The invention discloses an antibacterial washing liquid. The antibacterial washing liquid is prepared from the following raw materials in parts by weight: 20-45 parts of a surfactant, 1-3 parts of a washing assistant, 0.02-0.8 part of essence, 40-65 parts of deionized water and 5-10 parts of a bacteriostat. Wherein, the surfactant is a mixture of three substances, namely cocamidopropyl betaine, dodecyl dimethyl betaine and cetyl pyridinium, the washing assistant is sodium citrate, the essence is one of cinnamon essence, rose essence and spearmint essence, and the bacteriostat is any combination of one, two or three of anthraquinone, tea polyphenols and eugenol. The antibacterial washing liquid disclosed by the invention adopts a variety of surfactants, thereby having strong decontamination capability and good sterilization function, being less liable to producing drug resistance and being low in price of the raw materials; and furthermore, the preparation method is simple, and during the use of the antibacterial washing liquid, an environment is not damaged, and the health of a human body is not harmed.

The invention discloses a bottle clamping device for filling machines, having a structure that the bottle clamping device comprises a connecting rod, a support seat and a push rod; one end of the connecting rod is provided with a clamping block; the middle part of the support seat is provided with a bearing; one end inside the bearing is provided with an elastic component, and the other end inside the bearing is provided with the push rod; the other end of the connecting rod is provided with a pull rod; the other end of the pull rod is fixed on a small shaft; and one side of the push rod is provided with a device capable of allowing the push rod and the bearing to move relatively as well. The structure has the main points that the lower end of the support seat is provided with a lifting mechanism; the lifting mechanism consists of a plunger rod, a lifting shaft seat, and so on; the outer side of the upper end of the plunger rod is provided with the lifting shaft seat; the outer side of the lifting shaft seat is provided with a roller; the upper end of the lifting shaft seat is provided with a strut; the outer side of the strut is provided with a bush; and a height adjustment sleeve is arranged above the bush. As the bottle clamping device clamps a bottle mouth for fixation, the whole bottle is little in stress, thereby solving the problem that the pressure needed for filling and sealing causes the deformation of the bottle.

The invention discloses a low-odor TPV material with a sterilization function and a preparation method thereof. The TPV material is prepared from polypropylene, ethylene propylene diene terpolymer, thermoplastic elastomer, paraffin oil, cross-linking agent, TPV deodorant, coating lytic enzyme, nano photocatalyst, and antioxidant according to parts by weight. The TPV deodorant eliminates low molecular weight volatile matters in TPV, and releases low boiling point additive in melting and mixing of materials, is similar to and compatible with small molecules with odor, and can extract the small molecular substances with odor in the TPV material, and then the extracted small molecular substances with odor are taken away by a vacuum pumping method, so that a low-odor TPV material is obtained; and the coating lytic enzyme and nano photocatalyst decompose trace low volatility harmful gas generated by a material shaping part and low volatility harmful gas generated by surrounding environment of the part into harmless carbon dioxide and water, so that the TPV material has powerful functions of sterilizing, deodorizing, resisting mildew, resisting stain and self-cleaning, and purifying air.

The invention discloses a scale- and corrosion-inhibiting and antibacterial compounded water treatment agent which includes, by weight, 2-10% of 2-phosphonobutane-1,2,4-tricarboxylic acid, 2-10% of hydroxyl ethidine diphosphonic acid, 5-15% of hydrolyzed polymaleic anhydride, 3-10% of a sulfonic acid copolymer, 0.1-1% of alkylphenol polyoxyethylene ether, 2-10% of quaternary ammonium salt, 0.2-1% of benzotriazole, and the balanced being water. In the invention, a scale- and corrosion-inhibiting agent is compounded with an antibacterial agent, so that the water treatment agent is multifunctional and can deal with three major problems of scaling, corrosion and microorganisms in air conditioner circulation water. The water treatment agent is added in a continuous manner, so that the water treatment agent can quite stably control the microorganisms; in addition, according to water quality in site, ratio of the scale- and corrosion-inhibiting agent to the antibacterial agent can be adjusted on the basis of specific situations.

The invention relates to a foam hand sanitizer and a preparation method thereof, which belongs to the technical field of hand sanitizer, and comprises the following components in percentage by mass: 0.1-0.5 percent of chlorhexidine disinfectant, 10-18 percent of surfactant, 0.3-3 percent of emollient, 0.1-0.4 percent of pH regulator, 0.05-0.2 percent of essence and the balance is water. The foam hand sanitizer has delicate foam after being pressed by a foam pump head, and the dosage of the hand sanitizer is saved. The foam hand sanitizer contains chlorhexidine disinfectant, surfactant, emollient, pH regulator and the like, and each component is matched with each other, so that the foam hand sanitizer can kill Escherichia coli, Staphylococcus aureus and Candida albicans within 2 minutes. The sterilization effect is superior to the bacteriostatic hand sanitizer in the prior art, and meanwhile, the foam hand sanitizer has abundant and fine foam and is convenient to rinse, and moreover, the foam hand sanitizer can moisten and protect hands.

The invention disclose an oxygenation antibiosis additive, which comprises the following steps: compositing by silicon oxide, aluminum oxide, zinc oxide, silver titanium oxide, lanthanum oxide and praseodymium oxide; allocating ratio by weight at 65-75 wt silicon oxide, 10-20 wt aluminum oxide, 5-10 wt zinc oxide, 1-5 silver titanium oxide with 2-4% silver quantity, 0.3-0.5 wt lanthanum oxide and 0.3-0.5 wt praseodymium oxide; setting grain size of additive at 200-400 order. The additive possesses simple craft and function of oxygenation, sterilization and disintegrating organic matter, which increase output of water product.

The invention discloses a composite type sterilizing agent composition for treating industrial water. Sterilizing agents of the composite type sterilizing agent composition comprise, by weight, 50-90 parts of bromine compounds, 40-70 parts of amphoteric sterilizing agents, 1-15 parts of dispersing agents, 1-5 parts of inorganic acid, 0.5-3 parts of polymerization inhibitors, 5-10 parts of potassium hydroxide and 10-50 parts of deionized water. The composite type sterilizing agent composition has the advantages that the bromine compounds and the amphoteric sterilizing agents are compounded with one another, potential of various components can be played to the greatest extent under the synergistic effects, and accordingly requirements on microbial diversity sterilization treatment on the industrial water can be met; the sterilizing agents are low in toxicity and easy to degraded, and corrosion inhibition sterilization effects can be realized.

The invention provides an additive for polyurethane synthetic leather and a preparation method thereof. The additive is prepared from the following raw materials by weight: 25-28 parts of polyester resin, 7-9 parts of terpene resin, 2-3 parts of white carbon black, 1.2-1.5 parts of soap powder, 1.8-2.2 parts of ethylene-bis-stearamide, 0.8-1.3 parts of a silane coupling agent, 0.6-0.7 part of betaine, 1.2 parts of a dispersant, 0.6 part of a fluorine drying agent, and 60-65 parts of water. The additive provided by the invention can be added into synthetic leather to use, is harmless to the environment, also has no harm to human health, and can improve the water resistance and stability of synthetic leather. The finally obtained synthetic leather has the characteristics of antistatic properties, low irritation, sterilization, low toxicity, emulsification dispersion, chemical stability and biodegradability, etc.

The invention relates to a treatment method of a Tilletia controversa Kuhn (TCK) of wheat, in particular to a method to kill the TCK of the wheat through a methyl bromide fumigant. The method comprises that: the wheat with the TCK is enclosed into a closed space, and the methyl bromide with a weight ratio concentration of 98 percent is put into the closed space holding the wheat to fumigate the wheat. The fumigation is carried out in a preset dosage (180g / m<3>, 90g / m<3>) and at the ambient temperature (20 DEG C) and under the relative humidity of 60 to 70 percent; the fumigating time is 120h in the dosage of 180g / m<3> for one time, and 2 multiplied by 120h in the dosage of 90g / m<3> for two times. The method can kill the TCK of the wheat by 100 percent, and the operation is safe, reliable and can be widely popularized and applied.

The invention discloses an environment-friendly low temperature oil sludge demulsifier which comprises the following components on a basis of demulsifier weight: 6-30 parts of alkyl glycoside; 4-15 parts of cocoamido propyl hydroxy sulfobetaine; 0.1-1 part of alkali; and 54-89 parts of water. The preparation method comprises the following content: well mixing alkyl glycoside, cocoamido propyl hydroxy sulfobetaine, alkali and water to obtain the low temperature oil sludge demulsifier of the invention. The demulsifier has the advantages of good low temperature demulsification effect, wide application temperature range, high oil recovery rate, low production cost, greenness, environmental protection, simple preparation method, and wide application scope. The oil sludge demulsifier of the invention can be used for harmless treatment of tank bottom oil sludge, scum, and activated sludge, and also can be used for treatment of various oil sludge generated in petroleum exploitation and storage and transportation enterprises.

The invention provides a culture medium for culturing mushroom, which is obtained by adding 2-4 wt.% additives comprising bactericidal tobacco powder, egg shells having a high content of calcium and charcoal having a neutralizing action to a conventional mushroom culture medium of 96-98 wt.%, the mixure of additives and the mushroom culture medium being sterilized, the culture medium is a corncob, sawdust, sugar cane and cotton seed without rice bran. The waste of energy is prevented because the heat treatment for the culture medium is eliminated or reduced, especially no rice bran, the manufcturing process is able to be simplified without the heat treatment to culture excellent mushroom.

The invention provides compound efficient type fungicide and a preparation method thereof. The compound efficient type fungicide is prepared from the following components: glucosamine, methane sulfonic acid, fumaric acid, benzoyl chloride, thionyl chloride, dilute hydrochloric acid, a garlic extracting solution, a chitosan solution, double-chain quaternary ammonium salt, a sodium chloride water solution, a surfactant, vermiculite, a complexing agent, sodium alginate, hydrotalcite, a corrosion inhibitor, plant essential oil, ethylenediamine tetraacetic acid, magnesium salt, tetradecanoic acid and de-ionized water. The fungicide prepared by the invention is easy to decompose and has small influences on environment; the preparation method is simple and the cost is low; the fungicide has a good bactericidal effect, high efficiency and a wide applicable range and is suitable for industrial large-scale popularization and production.

The present invention provides one new type of hydrogen peroxide sterilizer comprising hydrogen peroxide 0.1-30 (in g / 100mL, the same below), aromatic carboxylic acid 0.05-15, inorganic acid matter 0.05-15, corrosion inhibitor 0-10 and hydrophilic solvent 1-70, except water. The sterilizer has powerful spore killing effect, and may be used in sterilizing surgical operation equipment, dental equipment and endoscope. After being sterilized with the sterilizer, the endoscope is rinsed with bacteria-free water or sterilizing water, and the surgical operation equipment and dental equipment need only swabbing with bacteria-free gauze. The sterilizer features the lasting and strengthened sterilizing effect during certain storage period. The sterilizer may be also used for sterilizing food processing utensil, food packing material, etc. and in public places, catering business, animal husbandry, etc.

The invention provides a preparation method of carbon nanodots with efficient antibacterial properties, and belongs to the technical field of carbon-based materials. The preparation method includes the following steps: placing a biomass material in a liquid medium and conducting reaction at 140-180 DEG C for 2-6 h to obtain the carbon nanodots with efficient antibacterial properties, wherein the biomass material is a natural biomaterial with antibacterial properties. The invention also provides application of the carbon nanodots prepared by the preparation method of the carbon nanodots with the efficient antibacterial properties in resisting gram-positive bacteria. The preparation method is based on cheap biomass as a precursor to synthesize the carbon nanodots by a hydrothermal method. The preparation method is simple and easy to obtain. The synthesized carbon nanodots have efficient photodynamic performance, and especially have inactivation efficiency of 99.5% of above.

The invention discloses pure natural maca yak meat free of artificial additives and a preparation method of the pure natural maca yak meat free of the artificial additives. The preparation method of the pure natural maca yak meat free of the artificial additives comprises the following steps: trimming raw yak meat into blocks with the weight of 0.2-0.5kg at 0-15 DEG C, removing skin, muscle, fascia and grease impurities, soaking the yak meat blocks in running water for 6-8 hours, washing and draining the soaked yak meat, and then suspending the yak meat in an environment with the temperature of 8 DEG C below zero-16 DEG C below zero and air speed of 1.5-3.5m / s for discharging acid; injecting salt water which is clean water treated by O3 running water and accounts for 15-20% of the yak meat, adding maca powder according to a weight percentage of 5-10%, rolling and kneading by using a vacuum rolling and kneading device, adding 2-3% of isomalto-oligosaccharide, 2-3% of white granulated sugar and 2-3% of starch during rolling and kneading, putting the yak meat in a jacketed pan after the rolling and the kneading, boiling at 80-100 DEG C for 20-30 minutes, trimming, extracting vacuum, carrying out instant sterilization at a high temperature of 120-130 DEG C, and subsequently cooling to obtain a maca yak meat product. The pure natural maca yak meat free of the artificial additives has extensive application values.

The invention relates to the technical field of processing agricultural products, and particularly relates to a processing method of salted vegetable. The processing method comprises the following steps: raw material treatment, rice wine scrunching, flavoring scrunching, potting and water sealing, sterilization and packaging; during the whole pickling, no salt is used for pickling, the aroma of salt vegetable is not increased by adopting chemical flavoring, the production of nitrites can be decreased, the diet health can be guaranteed, the rice wine, wild green onion and garlic bolts are effectively seeped into green vegetables during scrunching, a series of beneficial chemical changes are generated through the action of self enzyme, so that the produced salted vegetable is more natural and healthier, and the pursuit of the current market on green food without additives can be met.

The invention discloses a flame-retardant and mildew-proof heat preservation material for refrigeration equipment, which comprises the following raw materials in parts by weight: 14-18 parts of alkali-free glass fiber, 10-14 parts of hollow glass micropowder, 120-160 parts of polytetrahydrofuran glycol, polytetrahydrofuran glycol 120-160 parts, 30-40 parts of ester polyol, 3-5 parts of foaming agent, 15-25 parts of flame retardant additive, 2-4 parts of foam stabilizer, 1-3 parts of catalyst, 4-6 parts of anti-mold and fungicide, mineral filling 13‑17 parts, 5‑7 parts of coupling agent. The thermal insulation material of the present invention has low thermal conductivity, excellent thermal insulation performance, good mechanical strength, excellent uniformity, air permeability, elastic recovery rate, and in addition, the material has strong flame retardancy and bactericidal and anti-mildew effects At the same time, the raw material components of the present invention are safe and reliable, have no pollution to the environment, have low cost, and are simple in process, and have high practical value and good application prospects when used as insulation materials for refrigeration equipment.

The invention discloses a culture waterline intelligent cleaning control system. The system comprises a control center unit, a signal processing module, a cleaning function execution module, a communication module and a touch screen, wherein the cleaning function execution module comprises a cleaning module, a water detection device is arranged on a culture waterline, and the culture waterline isconnected with a connecting cylinder through a pipeline; the cleaning module is connected with the connecting cylinder, the water detection device sends detected data signals to the signal processingmodule, the control center unit sends operation instructions to control all execution elements of the cleaning module to work, cleaning of the aquaculture water line is achieved, and cleaning work isobserved and controlled in real time through the touch screen; and the cleaning work is remotely monitored and controlled through the communication module. The system is advantaged in that real-time cleaning of the culture waterline and intelligent control over cleaning of the culture waterline are achieved, detection precision is high, cleaning labor intensity is small, cleaning is timely and thorough, cleaning control is intelligent, poultry can be flushed, and normal use of the culture waterline is guaranteed.

The invention discloses a feeding bean material capable of improving growth performance of carp. The feeding bean material is prepared from the following raw materials by weight: 80 to 90 parts of soybean, 5 to 6 parts of puparium of brine fly, 4 to 5 parts of echinacea purpurea herb, 1 to 2 parts of Chinese prickly ash seed, 4 to 5 parts of green bean paste, 10 to 12 parts of maize starch, 1 to 2 parts of sea-buckthorn oil, 8 to 12 parts of tea leaf, 20 to 30 parts of leaf of Daphniphyllum macropodum Miq., 5 to 6 parts of lotus wine, 2 to 3 parts of aquilaria wood and a proper amount of gelatin, calcium carbonate and water. According to the invention, tea leaf, aquilaria wood and lotus wine are mixed and fermented, so the prepared feeding bean material has the medicinal value of aquilaria wood, fragrant, mellow and refreshing taste of black tea and delicate fragrance of wine and can promote intestinal digestion of carp and whet the appetite of carp.

The present invention provides a compound feed for meat ducklings coming out from a greenhouse. The compound feed comprises the following components in parts by weight: 50 parts of corn, 6 parts of flour, 3.2 parts of bran, 3 parts of rice bran, 3.5 parts of cottonseed meal, 17 parts of soybean meal, 4 parts of corn protein powder, 2.5 parts of expanded soybeans, 2.5 parts of fermented soybean meal, 2.5 parts of fish meal, 1 part of soybean oil, 1.92 parts of calcium hydrogen phosphate, 0.95 part of calcium carbonate, 0.25 part of sodium chloride, 0.5 part of a trace element vitamin compound premix, 0.26 part of lysine, 0.13 part of methionine, 0.03 part of threonine, 0.1 part of choline chloride, 0.05 part of protease, 0.2 part of lactic acid, 0.025 part of probiotic, 0.4 part of naturallutein, 0.03 part of ethoxyquinoline and 0.05 part of calcium propionate. The present invention also provides a preparation method of the feed. The feed solves problems that the meat ducklings comingout from the greenhouse are not good in growing potential, easy for diarrhea, dull in feathers, not beautiful in mouth shells and shanks, etc.

The invention discloses an upper cover structure for a basket-free sterilization can, which is structurally in a drawer type fast door opening structure. Because of the additional arrangement of an upper cover pressing device on the upper cover structure for the basket-free sterilization can, the opening / closing automation of a cover body of the upper cover is realized, the mass labor participation in the operation is avoided, the operation efficiency is improved, and simultaneously, the cost is reduced. Because of the adoption of a sealing ring at the upper part of the upper cover structure, the sterilization effect reduction caused by poor sealing performance of the upper cover structure is avoided. Because of a water inlet pipeline structure of the upper cover structure, the defect that the cover body of the upper cover needs to be opened when water enters the sterilization can is avoided.