98results about How to "Avoid qualitative change" patented technology

The present invention discloses one kind of lichi and longan preservative with high preserving effect, no toxicity, no environmental pollution and low cost and suitable for industrial production. The preservative consists of queensland arrowroot powder and bisulfite, pyrosulfite or dithionite capable of releasing SO2 when reacting with water and air. When the preservative is used, it is packed into non-woven polypropylene pocket, the pocket is set inside non-woven polypropylene bag for holding lichi or longan, and the bag is sealed and set into some packing box, with the amount of the preservative being 3.1-8.6 % of the weight of lichi or longan.

The invention discloses a drying closet comprising a closet door and a closed closet body, wherein a baffle plate is arranged in the closet body so as to divide the closet body into a hot chamber and a cold chamber; hot air and cold air circulate between the hot chamber and the cold chamber; and a condensed water receiver or a condensed water outlet is arranged at the bottom of the closet body. The drying closet works in such a manner that moisture on clothes placed in the hot chamber can be taken away by hot air conveniently, and the hot air containing the moisture is condensed and dewatered after passing through the cold chamber and is changed into relatively dry air which enters into the hot chamber for circulation again, so that the invention has the advantages that the clothes are dried, the efficiency is high, the energy is saved, the environment pollution is eliminated, the temperature is uniform, the quantity of discharged moist hot air is small, the low-temperature operation is safe and reliable, and the surface temperature on a heater is not higher than 75 DEG C generally. Therefore, the clothes cannot be damaged or scalded; and accidents such as explosion, fire and the like are avoided.

The invention aims to industrially produce ginkgolide B liposome medicinal composition injection and ginkgolide B liposome medicinal composition oral preparations through uniform formula, process and equipment by a molecule dispersing method. The invention provides a molar ratio formula of the component raw materials for preparing the ginkgolide B liposome medicinal composition, steps and method for preparing ginkgolide B liposome medicinal composition freeze-dried injection and oral preparations, and embodiments for preparation. The ginkgolide B liposome medicinal composition is used for treating cerebral and vascular diseases.

According to the invention, a liposome combination drug injection and an oral liposome combination drug preparation can be produced in a large industrialization manner through a molecular dispersion method with a unified formula, a unified process and unified equipment. The invention provides a formula of raw components for preparing liposome combination drugs in a molar ratio, provides freeze-drying injection and oral preparation processes for the prepared liposome combination drugs, and also provides twenty embodiments for preparing the liposome combination drugs, such as an anti-gastric-ulcer liposome combination drug, antibacterial and antifungal liposome combination drugs, an anti-tumor liposome combination drug, an anti-virus liposome combination drug, an anti-emetic liposome combination drug, a nutritional supplement liposome combination drug and hypoglycemic agent and cardiovascular medicine liposome combination drugs.

The invention discloses a drum fixation machine with impurity removing and screening functions. The drum fixation machine comprises a fixation machine body, wherein the fixation machine body comprisesa blanking hopper; the blanking hopper is provided with a material guiding assembly; a first support is arranged under the material guiding assembly; an inner drum is arranged at one side of the material guiding assembly; the inner drum is provided with a controller; the inner drum is connected with a discharging pipe; the inner drum comprises a sealed connecting sleeve, a low-temperature heatingbarrel and a high-temperature heating barrel; the material guiding assembly comprises a blanking pipe; a first impurity opening is formed in the lower end of the blanking pipe; a first screen net isarranged on the first impurity opening; the first screen net is provided with a first vibrator and a first pressure sensor; a first impurity tank is arranged under the first impurity opening. According to the drum fixation machine disclosed by the invention, tea leaf raw materials can be effectively prevented from being accumulated in the blanking pipe, the uniformity of a blanking speed can be effectively ensured, dust impurities in tea leaves can be cleaned, simple separation treatment on the quality of the tea leaves can be carried out, and the fixation efficiency of the drum fixation machine can be increased.

The application provides a A fully-sealed oil char device for transformer sleeve and its oil char method are provided. That device comprises a main body, wherein the main body is provided with an oilpipe and a three-way pipe in a vertical direction, a first end of the oil pipe is connected with the transformer sleeve, and a second end of the oil pipe is connected with an oil tank; The first ventilation port of the three-way pipe is connected with the transformer bushing, the second ventilation port of the three-way pipe is connected with the inflator, the inflator is filled with inert gas, and the third ventilation port of the three-way pipe is connected with the suction device. When the oil sample needs to be taken, the inflator is turned on, the gas in the inflator enters the transformer bushing, and the oil sample in the transformer bushing enters the oil tank through the tubing; When oil filling is required, the suction device is turned on to generate negative pressure in the transformer bushing, which causes the transformer oil in the fuel tank to enter the transformer bushing through the tubing. The device maintains the sealing property throughout the oil filling and oil extraction process, and the air cannot enter the transformer bushing to avoid the oil sample quality change.

The invention discloses a marketing type agricultural product preservation display cabinet which comprises a bottom box, a main cabinet body and a storage cavity, wherein a first limiting sliding chute is formed in the surface of the main cabinet body; a glass door body is mounted on the inner side surface of the first limiting sliding chute; an exhaust pipe orifice is mounted at the top end of the inner wall of the main cabinet body; a hanging ring is mounted on the inner wall of the main cabinet body below the exhaust pipe orifice; a partition layer is mounted in the main cabinet body belowthe hanging ring; the storage cavity is formed in the main cabinet body below the partition layer; the bottom box is mounted at the bottom of the main cabinet body; a second limiting sliding chute isformed in the bottom box; a standby storage battery is mounted in the bottom box on one side of the second limiting sliding chute; and a refrigeration compressor is mounted in the bottom box on one side of the standby storage battery. In the invention, through a series of structures, the display cabinet can realize the characteristics of refrigeration and preservation, and is easy to move and convenient for placing the agricultural products, thereby promoting the marketing.

The invention provides a drying grain tank of a combine harvester. The drying grain tank comprises a rack and a grain tank body, and a drying system is installed in the grain tank body and used for drying grains in the grain tank body; the grain tank body is rotatably installed on the rack. A shell of the grain tank body is provided with an outer gear, and the grain tank body rotates by itself through a transmission device. The transmission device comprises transmission gears and a transmission shaft; the transmission shaft is provided with the transmission gears; the transmission gears are meshed with the outer gear on the shell of the grain tank body. Cereal stirring plates evenly distributed in the circumference direction are arranged in the shell of the grain tank body. According to the drying grain tank, cereals in the grain tank body are dried through a heating device, vapor volatilized from the cereals is pumped out of the grain tank body through a vacuum pump, and the drying environment in the grain tank body is maintained. In the drying process, the cereals in the grain tank body are continuously stirred through the cereal stirring plates, and the situation is avoided thatsince the cereals are unevenly heated, the drying effect is influenced.

The invention relates to a heating nonflammable smoking set and a control method thereof. The heating nonflammable smoking set comprises a shell and a heating assembly. A cavity is formed in the shell, and an air inlet hole and an air outlet hole are formed in the shell. The heating assembly is contained in the cavity and comprises a pipe and heating elements. The pipe is provided with a heating cavity for containing a tobacco product, an air inlet communicated with the heating cavity is formed in one end of the pipe, and the air inlet is communicated with the air inlet hole and the air outlethole of the shell. The heating elements are arranged on the side wall of the pipe, the heating elements are arranged at intervals in the axial direction of the pipe, and the heating elements are independently controlled. When the heating nonflammable smoking set heats the tobacco product, the heating elements are controlled to heat the tobacco product at the same time, the heating and temperaturerising time of the heating nonflammable smoking set is short, baked smoke is high in quality, the smoke has no sour, and no oral residue is generated after a user smokes the smoke.

The invention is characterized in that uniform formula, process and equipment are used for industrial production of pefloxacin mesilate liposome medicine composition in the forms of injection and oral preparation by using a molecular dispersion method. The invention provides the mole ratio of the components in a formula of the pefloxacin mesilate liposome medicine composition. The invention also provides steps, methods and specific embodiments for preparing the pefloxacin mesilate liposome medicine composition in the forms of lyophilized injection and oral preparation. The pefloxacin mesilate liposome medicine composition can be used for resisting bacteria.

The invention discloses a method for efficiently extracting longan seed polyphenols. The method comprises the following steps: (1) pulping and radiation treatment: mixing fresh longan seeds and deionized water, pulping, adding an organic acid solution, heating to 45-50 DEG C, and carrying out 60Co ionizing radiation treatment for 30-60 seconds to obtain a radiated pulp; (2) leaching and filtration treatment: adding a composite enzyme into the radiated pulp in a nitrogen protective atmosphere, extracting at 60-70 DEG C under reflux for 2-3 hours, filtering the leaching solution through an ultrafiltration membrane, and collecting the filtrate; (3) reduced pressure concentration and extraction treatment; and (4) adsorption and drying treatment. The ionizing radiation is matched with the organic acid solution to treat the pulp, thereby lowering the polyphenol binding capacity. The composite enzyme is added in the leaching process to break through the chemical bonds for binding the polyphenols, thereby enhancing the polyphenol product yield. The method is simple to operate, and has the advantages of high extraction efficiency and the like.

The invention discloses a pickled chilli preservation method. The pickled chilli preservation method comprises the following steps: fresh green, purple or / and red chillies with stems are cleaned and drained; the drained chillies are put in clear lime water for soaking for 10-15 minutes and taken out for draining; wine with the weight of 3-5% of the total weight of the chillies and salt with the weight of 5-10% of the total weight of the chillies are added to the chillies; the mixture is thoroughly stirred, then pickled for 10-15 hours, and put in a pickle jar; the jar is covered, and the jaw opening is sealed; the chillies can be edible after being pickled for 15-25 days. The pickled chilli preservation method can keep the pickled chillies fresh, crisp, delicious, slightly hot and sour for a long time, and is environmentally-friendly and simple in process.

The invention discloses a high-temperature magnesium oxide calcining device and a calcining method thereof, and belongs to the technical field of magnesium oxide calcining. The device comprises a feeder, an air flow dryer, a first-stage cyclone pre-heater, a second-stage cyclone pre-heater, a third-stage cyclone pre-heater, a dust remover, an induced draft fan, a calcining furnace, an automatic fuel gas burner, a heat preservation conditioning furnace, a discharging device, a material collector and a cooling system. According to the invention, magnesite powder or light calcined magnesia powderis used as a raw material; a three-stage cyclone pre-heater set is adopted for completing preheating treatment of materials, and high-temperature calcination and heat preservation conditioning are conducted, wherein tail gas is calcined to achieve material drying and preheating process treatment, the process is a dynamic material flow-carrying mass transfer and heat transfer process, high-qualitymagnesium oxide is produced while heat energy is effectively utilized, and cost is saved; and the production of magnesium oxide products with different quality indexes, which are suitable for the field of building materials, can be realized.

The invention relates to the technical field of chemistry, and discloses a rapid drying device for formed chemical fertilizers. The rapid drying device for the formed chemical fertilizers comprises adrying barrel, wherein the outer surface of the drying barrel is fixedly connected with a heat preservation and insulation pad; the upper end of the drying barrel is provided with a heating hole; an electric heating pipe is movably clamped in the heating hole; the upper end of the drying barrel is provided with a sealing cover; supporting legs are fixedly connected to the lower end of the drying barrel; a motor is fixedly connected to the lower surface of the drying barrel; a discharging port is formed in the outer surface of the drying barrel; and a blocking plate is arranged in the discharging port. According to the rapid drying device for the formed fertilizers, the fertilizers in the drying barrel is turned up and down, so that the fertilizers can form a material curtain, the fertilizers at the bottom can be in uniform contact with heat, the caking phenomenon caused by non-uniform heating due to fertilizer accumulation is avoided, the heating efficiency of the fertilizer is improved, the drying speed is increased, the drying time is saved, and the production efficiency is improved.

The invention discloses a grain drying device which comprises a machine shell. A driving mechanism is arranged at the upper end of the machine shell, a feeding hopper is connected to the driving mechanism, an inclined discharging plate communicating with the feeding hopper is arranged at the lower end of the feeding hopper, blocking plates located below the inclined discharging plate are arranged at the two ends of the inner wall of the machine shell correspondingly, a material spreading plate located below the blocking plate is arranged in the machine shell, the middle of the material spreading plate is connected with a rotating shaft, the rotating shaft is rotatably arranged on the inner wall of the machine shell, the two ends of the material spreading plate are connected with the blocking plate through first springs respectively, a linkage assembly is further arranged on the blocking plate, and a plurality of inclined heating plates which are staggered from top to bottom are also arranged below the material spreading plate. The problems that most grains are prone to being stacked in the drying process of existing grain drying equipment, so that the grains in the equipment cannot be dried completely, meanwhile, the grains go bad after being dried for a long time, and subsequent storage is affected are solved.

The invention discloses a process for preparing a feed from panicled fameflower root dregs. The process is characterized by comprising the following steps: carrying out blending, primary fermentation, pressing, post-fermentation and mixing on fresh panicled fameflower root dregs obtained by wine brewing to prepare panicled fameflower root juice; mixing the juice, dried panicled fameflower root cake, corns and rice bran to obtain the feed. Yeast prepared from the high-quality panicled fameflower root fruits is strong in fermentative capability; by adopting a non-metal fermentation barrel or tank, anthocyanin in the panicled fameflower root fruits is prevented from qualitative change, and the prepared juice is abundant in nutrition and good in taste; the prepared feed can enhance animal immunity, promote bone hardness and muscle development, protect animals from free radical injury, and care and strengthen body; the feed is applicable to animals such as livestock, poultry and fishes.

The invention provides a legal document storage safety device. In the legal field, various types of magnetized recording data including voice tapes, video tapes, magnetic disks, disks, soft disks, USB (Universal Serial Bus) flash disks, CDs (Compact Disc) and the like are more and more, and a common cabinet cannot easily resist invasion of magnetic fields, moisture and dust from the outer side. The legal document storage safety device comprises a cabinet door (1), wherein the cabinet door (1) is connected with a moisture-proof box (4), a three-point type linkage door lock (2), a cabinet door handle (18), a sealing strip (3) and a retractable device (5) respectively; the retractable device is connected with a cabinet body (9); the cabinet body is connected with an illumination lamp (6) and an inner cabinet door (8) respectively; the inner cabinet door is connected with an inner cabinet lock (7); the cabinet body is connected with drawers (15); the drawers are connected with push-pull handles (11), slide ways (12) and tab bars (10) respectively; the cabinet is connected with a base (13); the base is connected with movable rolling wheels (14). The legal document storage safety device provided by the invention is mainly used for storing legal documents.

The invention discloses an automatic timing concrete stirring device which comprises a machine body. A lower side partition plate is in butt connection with the upper side face of the machine body. Astirring body is fixedly arranged at the upper side of the lower side partition plate. A discharging outlet with an upward opening is formed in the stirring body. A stirring cavity communicates with the lower side wall of the discharging outlet. A dust removal space communicates with the left side wall of the stirring cavity. A communicating opening communicates with the lower side wall of the dust removal space. A speed changing space is arranged at the right side of a transmission space. The concrete stirring time can be effectively controlled, the problems that due to manual errors, the concrete stirring time is excessively long, and the concrete quality is seriously lowered are solved, meanwhile, the mobility is high, the problem that concrete goes bad in the concrete conveying processis avoided, the concrete quality and the using efficiency are effectively improved, meanwhile, the stirring speed can be lowered and adjusted according to the concrete amount, and the concrete stirring quality is greatly improved.

A fresh-keeping bacteriostatic lyophobic porous film for juicy food and a preparation technology thereof. The porous film has a microstructural single layer or multiple layers, wherein each single layer comprises a contact layer, an interface layer and a back side layer. The preparation technology comprises raw material proportioning, one-step or two-step vacuum pore-forming by pore-forming method and machinery pore-forming, wherein the raw materials contain 0-100% of PE, 100-0% of PP, 0-10% of a bacteriostatic agent and 0-10% of other components (such as a hydrophilizing agent, a pigment and the like); the vacuum pore-forming refers to plastic raw material technological film forming as well as pore forming by negative pressure suction; one step method refers to online film-forming and pore-forming by one step; two step method refers to film forming and pore forming respectively completed on two equipment; and the machinery pore-forming refers to pore forming by knife mold extruding, shearing and penetrating under the action of mechanical force. The porous film, which is prepared by the preparation technology and has a porous structure, has food fresh-keeping, bacteriostatic and anti-seepage effects.

The invention aims to industrially produce ginkgolide B liposome medicinal composition injection and ginkgolide B liposome medicinal composition oral preparations through uniform formula, process and equipment by a molecule dispersing method. The invention provides a molar ratio formula of the component raw materials for preparing the ginkgolide B liposome medicinal composition, steps and method for preparing ginkgolide B liposome medicinal composition freeze-dried injection and oral preparations, and embodiments for preparation. The ginkgolide B liposome medicinal composition is used for treating cerebral and vascular diseases.

The invention discloses a raisin qi-tonifying blood-enriching shrimp cake and a preparation method thereof. The raisin qi-tonifying blood-enriching shrimp cake is prepared from the following raw materials in parts by weight: 4-5 parts of raw oyster shells, 2-3 parts of raisins, 3-4 parts of coffee beans, 1-2 parts of roots of red-rooted salvia, 1-2 parts of fructus amomi, 1-2 parts of rhizoma polygonati, 200-210 parts of shrimp meat, 80-90 parts of frozen minced fillet, 20-25 parts of garlic juice, 18-20 parts of garlic powder, 15-18 parts of smashed garlic, 0.3-0.4 part of nisin, 10-12 parts of salt, 18-20 parts of soybean oil, 12-15 parts of white granulated sugar, 10-12 parts of an egg liquid, 5-6 parts of cassava starch, 3-4 parts of isolated soybean protein, and a proper amount of breadcrumbs, vegetable oil and water. According to the raisin qi-tonifying blood-enriching shrimp cake, the coffee beans and water 3-4 times that amount of the coffee beans are ground into juice, the raw oyster shells are put into the coffee juice to boil, and then are taken out to mix with the raisin, and are cut up. The raw oyster shells are boiled in the coffee juice, so that fishy smell is removed, and the mouthfeel is improved well; and the raisin is good in qi-tonifying blood-enriching effect.

The invention discloses a rapid dispersing system with a vertical heating pipeline. The rapid dispersing system comprises a heating pipeline which is arranged inside a tank body, wherein the heating pipeline comprises a horizontal pipeline parallel to a baseplate of the tank body and a vertical pipeline which is vertically arranged relative to the horizontal pipeline; an outlet of the horizontal pipeline is connected with an inlet of the vertical pipeline, and an outlet of the vertical pipeline is communicated with the exterior; the vertical pipeline comprises a central pipe and a plurality of branch pipelines which are circumferentially distributed by adopting the central pipe as the center. Heating medium discharged from the horizontal pipeline is divided into multiple shares to pass through the branch pipelines and the central pipe, viscose materials in the tank body are heated by utilizing the heating medium in the branch pipelines, not only can the energy waste caused by the direct discharging of the high-temperature heating medium be avoided, but also the viscose materials on the bottom and middle part inside the tank body can be simultaneously heated, the central part of the solid viscose material can be segmented into a plurality of blocks after being heated and liquefied, a core breaking effect can be realized, and the liquefying efficiency of the material can be improved.

The invention belongs to the technical field of deep processing of agricultural products, and discloses a preparation method of fast rehydrating Yuba. Soybean is used as a raw material, and the preparation method comprises the following processes: soybean soaking, pulp grinding, pulp boiling, heat preservation and Yuba-taking off, high-temperature dehydration drying, and packaging, and is characterized in that edible sodium bicarbonate is added to adjust pH of a pulp to 7.5-8.5 after pulp boiling; two-stage tunnel-type far-infrared drying is used for high-temperature dehydration drying: the first-stage oven-drying temperature is 120-130 DEG C, and lasts for 5-8 min, and the second temperature is 130-150 DEG C, and lasts for 6-10 min; and drying is performed until the moisture content of Yuba is 10%-14%. The Yuba is rich in nutrients, fast rehydration of the Yuba is realized through atmospheric-pressure micro-expansion produced by far-infrared high-temperature rapid dehydration during the drying process, and the fluffy effect when sodium bicarbonate is rapidly decomposed to generate a carbon dioxide gas at high temperature, the Yuba is convenient to eat, and a new way for Yuba processing is opened up.

The invention discloses a duck liver and shrimp cake capable of tonifying the liver and improving eyesight and a preparation method thereof. The duck liver and shrimp cake capable of tonifying the liver and improving eyesight is prepared from the following raw materials in parts by weight: 2-3 parts of watermelon peels, 3-4 parts of duck liver, 6-8 parts of pomegranate juice, 1-2 parts of buckwheat, 1-2 parts of perilla leaves, 1-2 parts of cassia twig, 200-210 parts of shrimp mince, 80-90 parts of frozen surimi, 20-25 parts of garlic juice, 18-20 parts of garlic powder, 15-18 parts of minced garlic, 0.3-0.4 part of nisin, 10-12 parts of table salt, 18-20 parts of soybean oil, 12-15 parts of white granulated sugar, 10-12 parts of egg liquid, 5-6 parts of cassava starch, 3-4 parts of soybean protein isolate, a proper amount of breadcrumbs, a proper amount of plant oil and a proper amount of water. The preparation method comprises the following steps of: injecting the pomegranate juice into the duck liver, pickling the duck liver, putting the pickled materials in a food steamer for steaming, mixing the steamed materials with the watermelon peels, and chopping the mixture. The pomegranate juice is capable of improving the taste of the duck liver and eliminating peculiar smell, and the duck liver is good in liver-tonifying and eyesight-improving effects.

The invention discloses intelligent medicine classified storage equipment and a using method thereof, and particularly relates to the field of medicine storage. The intelligent medicine classified storage equipment comprises a box body, a protective door is arranged in the middle of the front side wall body of the box body, and storage drawers are symmetrically inserted in the two sides of the left side of the front side wall body of the box body. A storage fixing plate used for fixing medicine bottles and medicine boxes is arranged at the top of an inner cavity of each storage drawer. A push plate used for pushing the medicine bottles and the medicine boxes to move upwards is arranged at the bottom of each storage fixing plate. According to the intelligent medicine classified storage equipment and the using method thereof, through cooperation of the storage fixing plates, medicine bottle grooves and medicine box grooves, bottled medicines and boxed medicines of different sizes are fixedly stored, the fixing effect is improved, collision and damage of the medicines are prevented, meanwhile, the classified storage effect is achieved, disordered storage of the bottled medicines and the boxed medicines is prevented, and the storage fixing plates drive the push plates to push upwards, so that the medicines can be conveniently taken out from the middles of the storage fixing plate and are convenient to take.

The invention relates to the technical field of inspection devices, in particular to a gynecological clinical anti-pollution inspection device. The device comprises a transfer box, wherein the top ofthe transfer box is provided with a top cover, the bottom end of the transfer box is provided with equipment box and a bottom cover, both the equipment box and the top cover are connected to the transfer box, the bottom cover is connected to the equipment box through screws, the storage box is provided with a storage box, the storage box comprises a transfer frame and a shock absorption frame, andthe equipment box is hollow and is provided with a plurality of ultraviolet lamp tubes in the middle position of the upper layer thereof. Compared with an existing gynecological clinical anti-pollution inspection device, placing, inspection and sampling by medical personnel is facilitated, meanwhile, a cover opening is automatically controlled to be closed and opened, odor spreading is effectively eradicated, pollution is reduced, and temperature can be reduced through a refrigeration mechanism, so that qualitative change is prevented.

The invention discloses spin coating equipment for lenses. The spin coating equipment is characterized by comprising a mechanical hand, a feeding mechanism and a UV curing lamp, wherein the feeding mechanism comprises a recovery tube, a spray head and a negative pressure device; the recovery tube is used for bearing and collecting reinforcing liquid which is centrifugally thrown away from the lenses; the spray head is positioned in the recovery tube; the negative pressure device is used for spraying out the reinforcing liquid from the spray head; the recovery tube is made of lighttight materials; the mechanical hand comprises a fixing component used for fixing the lenses, a rotating component used for driving the fixing component to rotate and a moving component used for driving the fixingcomponent to move; the moving component can extend into the recovery tube and can also be lifted for leaving away the recovery tube in the process of driving the fixing component to move; the upper side of the recovery tube is glidingly connected with a lamp holder for installing the UV curing lamp; the cross section of the lamp holder is not smaller than an opening of the recovery tube; the irradiation direction of the UV curing lamp is a direction far away from the lamp holder. The spin coating equipment has the advantages that the reinforcing liquid can be effectively recovered, so that the implementation cost of spin coating reinforcement is favorably reduced.

There is the problem that a liquid culture medium fed by a pump has a high frequency of contact with a gas during movement in a tube, and the pH value of the liquid culture medium before and after feeding changes easily. In a liquid feeder and a cell culture apparatus provided therewith, a feed pipe 7 is connected with a gas bag 14, the liquid to be fed into the feed pipe 7 is fed so as to be sandwiched by a gas for suppressing the qualitative changes of the liquid. Furthermore, the gas bag is connected with a container 8 for holding a liquid, and holds the gas for suppressing qualitative changes of the liquid in a gas phase of the container.

The invention provides an experimental instrument storage cabinet for chemical experiments and the experimental instrument storage cabinet comprises an experimental cabinet main body and a dust-proofcover. The top of the experimental cabinet main body is fixedly connected to the bottom of the dust-proof cover. The left wall of the inner cavity of the experimental cabinet main body is fixedly connected to a horizontal plate, and the right end of the horizontal plate is fixedly connected to the right wall of the inner cavity of the experimental cabinet main body. The top of the horizontal plateis embedded with a first motor, and the output end of the first motor movably penetrates through the horizontal plate and extends to the position below the horizontal plate. According to the experimental instrument storage cabinet for chemical experiments, the first motor is started, and then a rotation disk is driven to rotate through the rotation of output end of the first motor. The rotation disk drives a rotation rod to perform circular motion, the rotation rod drives a sliding block to perform circular motion on a circular sliding rod, and the sliding block drives a driving rod to rotate, so that moisture remained at the bottom wall of the inner cavity of the experimental cabinet main body can be absorbed by sponge so as to achieve the aim of moisture-proof and prevent the instruments in the experimental cabinet main body from being qualitatively changed by moisture, therefore, the safety performance of the experimental cabinet main body is higher.

The invention discloses an ultraviolet light emitting diode element structure and a manufacturing method thereof. The ultraviolet light emitting diode element structure comprises a supporting part, alight-transmitting part, at least one ultraviolet light emitting diode chip and a protective layer; the supporting part and the light-transmitting part are encircled to form an accommodating space, and the accommodating space is filled with silicone oil; the at least one ultraviolet light emitting diode chip is positioned in the accommodating space and is arranged on the supporting part; the protective layer is arranged on the surface and the side surface of the ultraviolet light emitting diode chip; and the protective layer is arranged between the supporting part and the silicone oil. The light extraction efficiency of the light-emitting diode chip can be improved, and the defect that the output light power of the light-emitting diode element is attenuated after the light-emitting diode element works for a long time can be obviously overcome.