96results about How to "Avoid spoilage" patented technology

The invention relates to a refrigerated transport monitoring system for cold-chain logistics. The refrigerated transport monitoring system is characterized in that a sensor node module is used for transmitting an electric signal corresponding to acquired environmental data to a signal processing module; the signal processing module is used for transmitting digital signal converted from the electric signal to a central control unit; the central control unit is used for judging whether the digital signal is larger than a threshold or not; if so, the central control unit reads current geographical position information of a refrigerated truck through a positioning module, and determines optimal address information; and meanwhile, the central control unit transmits alarm information generated through a gateway to a cloud server and a mobile terminal respectively. Through adoption of the refrigerated transport monitoring system, the environmental parameters of temperature, moisture and air pressure can be monitored in real time in order to prevent cold-chain products from deteriorating in a refrigerated transport process. Meanwhile, the mobile terminal also displays the address of a refrigeration station closest to the current position of the refrigerated truck in real time, so that transport personnel can transfer the cold-chain products immediately, and product deterioration due tounexpected failure of refrigeration equipment is further reduced, thereby reducing economical loss.

The application discloses a cloud-technology-based fresh milk distribution system comprising a user terminal, a cloud computing center, a refrigeration vehicle, and a cloud distribution site. The user terminal is used for sending fresh milk reserving information inputted by a user to the cloud computing center; the cloud computing center is used for carrying out statistics on the received fresh milk reserving information to generate a corresponding detailed distribution list; the refrigeration vehicle is used for obtaining the detailed distribution list from the cloud computing center, transporting the fresh milk with corresponding number information to refrigeration equipment at a corresponding cloud distribution site based on the detailed distribution list, and sending real-time position information of the vehicle to the cloud computing center during the transporting process; and the cloud distribution site is used for receiving the real-time vehicle position information that is sent by the cloud computing center and corresponds to the cloud distribution site, predicting time of arrival of the fresh milk at the refrigeration equipment of the cloud distribution site based on the real-time vehicle position information, and pushing the time to a user terminal of the corresponding user in real time, thereby notifying the user to take milk timely. According to the application, a phenomenon that the fresh milk goes bad because the user can not take the fresh milk timely in daily lift can be avoided.

The invention discloses a refrigerator with adjustable humidity. The refrigerator comprises a refrigeration chamber and a door matched with the refrigeration chamber, and further comprises a sealed chamber arranged in the refrigeration chamber, an air door and a drive device, wherein the wall of the sealed chamber is provided with a ventilation hole, the air door is arranged on the ventilation hole, the openness of the air door is in direct proportion to ventilation amount of the ventilation hole, and the drive device can drive the air door to move and adjust the openness of the air door. When the humidity in the sealed chamber is lower than the humidity required by food in the sealed chamber, the air door can be closed to prevent moisture in the sealed chamber from losing. Accordingly, the humidity in the sealed chamber can be adjusted according to the food stored in the sealed chamber so as to reach the requirement for the humidity of the food in the sealed chamber, and accordingly the situation that the storage humidity of the food does not meet the requirement and the food goes bad is prevented.

The invention discloses an electric cooker capable of inhibiting bacterium breeding during reservation and heat preservation and a method thereof. The electric cooker comprises a cooker body and a cooker cover, wherein an inner cooker is arranged in the cooker body, a cover plate and a sealing ring are arranged in the cooker cover and are matched to seal the opening portion of the inner cooker, the cover plate is provided with an exhaust hole, and a ball valve for sealing the exhaust hole during reservation and heat preservation is arranged above the exhaust hole. The cover plate, the sealing ring and the ball valve which are matched mutually are arranged in the cooker cover, so that a food material in the inner cooker of the electric cooker is located in a sealed environment, saccharomycetes and other bacteria are prevented from invading into the cooker in the process of long-time reservation and heat preservation, and food material souring is prevented.

The invention discloses a florfenicol soluble powder and a preparation method thereof. The florfenicol soluble powder comprises the following components in parts by weight: 21.5-26.5 parts of florfenicol, 70.9-75.5% of inclusion agent, 0.8-1.5% of trimethoprim, 0.8-1 part of dispersing agent and 0.5-0.8 part of latent solvent. According to the florfenicol soluble powder and the preparation methodthereof disclosed by the invention, a molecular inclusion technology is adopted for solving the insoluble problem of florfenicol in water and greatly promoting the bioavailability of the product; through the improvement of technological parameters, the bulk density of common centrifugal spray technical products can be increased and the bulk density of products can reach up to the level more suitable for fodder enterprises and cultivation terminals; the product liquidity is promoted, the usage amount of packing materials is saved and the obvious social and economic benefits are created.

The invention discloses a preparation device for preparing livestock and poultry feed from reed edible mushroom waste mushroom sticks. A grinding disc is welded to the side end of a transmission rod, a discharging hole penetrates through the top end of the grinding disc, a fixed mixing plate is clamped to one end of the inner side of a tank body, an adsorption electromagnet is embedded and clamped to one end of a limiting discharging plate, and a vibration motor is connected to the bottom end of a cross-shaped clamping plate. A storage screening hopper is clamped to the top end of the cross clamping plate, a clamping spring is welded to the top end of the inner side of the storage screening hopper, the bottom end of a sliding clamping column penetrates through the storage screening hopper, a grinding disc is driven by a transmission motor to grind raw materials, the raw materials are intercepted through a discharging intercepting plate, the raw materials are prevented from being accumulated on the grinding disc, and therefore the discharging speed is guaranteed; the raw materials are mixed and stirred through the mixing and stirring plate, discharging is conducted through the limiting discharging plate after stirring is completed. Meanwhile, the storage screening hopper is driven by the vibration motor to conduct vibration screening, and therefore the refining effect on the raw materials is guaranteed.

The invention discloses natural nutrient healthy edible oil. A natural antioxidant is added in edible oil; the edible oil is single edible plant oil or edible plant blended oil; and the natural antioxidant is at least one of a rosemary extract, fat-soluble tea polyphenol, vitamin E, a licorice root antioxidant or a bamboo leaf antioxidant. The invention further discloses a method for making the natural nutrient healthy edible oil. The method comprises the following steps: mixing single oil raw materials, adding the natural antioxidant, and performing stirring and heating to 40-80 DEG C. The natural nutrient healthy edible oil disclosed by the invention belongs to purely natural edible oil, and is low in cost, nutrient, safe and healthy, free of toxic or side effect on human bodies, long inpreservation time and not liable to cause denaturation phenomena; and the making method of the natural nutrient healthy edible oil is simple, easy in raw material obtaining and applicable to on-scaleproduction.

The invention provides a technology for removing fishy smell from squids. The technology comprises the following steps of (1) pretreatment: removing skin, internal organs, heads and feet from fresh squids, performing thorough cleaning, and performing draining; (2) preparation of fishy smell removing liquid, wherein the fishy smell removing liquid comprises the following components of tea tree oil, eucalyptus oil, dihydrate sodium citrate, a surfactant AES, glycyrrhizic acid, calcium oxide, BS-12, propylene glycol and water; taking water in parts by weight, adding the taken water into a reaction kettle, performing stirring, adding the surfactant AES and the calcium oxide, raising the temperature to 70 DEG C, performing stirring, sequentially adding the tea tree oil, the eucalyptus oil, the dihydrate sodium citrate and the glycyrrhizic acid, performing emulsification for 35min, adding the BS-12, performing stirring, adding the propylene glycol, performing cooling to 27 DEG C, performing defoaming, and performing filtration, so as to obtain the fishy smell removing liquid; (3) fishy smell removal: placing the drained squids into the fishy smell removing liquid, soaking the squids for 7min, draining the soaked squids, placing the drained squids into a fresh keeping agent, soaking the squids for 14 min, draining the soaked squids, and performing cold air drying; and (4) low-temperature storage: performing vacuum packaging on the dried squids, and performing low-temperature storage.

The invention provides a packing bottle capable of separating solid from liquid. The packing bottle comprises a bottle body and a bottle lid; an accommodating sleeve piece is arranged in a bottle opening of the bottle body, and includes a rubber sleeve and a solid container opened in the bottom; the solid container is inserted in the rubber sleeve; a sealing pad for blocking the bottom of the rubber sleeve is arranged at the bottom of the rubber sleeve; one side of the sealing pad is hinged with the bottom side wall of the rubber sleeve; the bottom-sealed rubber sleeve communicates with the solid container to form a closed solid accommodating cavity; the bottom opening of the solid container is beveled; and the solid container is higher than the rubber sleeve. The packing bottle can be applied to such products drunk while dissolving as medicines, drinks and coffees, and can store the solid and the liquid in a separation manner; during drinking, the solid is quickly dissolved in the liquid to realize drinking while dissolving; and the packing bottle can prolong the shelf life of such products as liquid medicines and drinks to prevent deterioration of the drinks.

The invention discloses a tilapia mossambica abdominal cavity black membrane removing culture method which comprises the following steps: step 1, selecting tilapia mossambica fries, removing female tilapia mossambica in the tilapia mossambica fries, and reserving male tilapia mossambica; and step 2, feeding the male tilapia mossambica in selected in the step 1 with feed mixed with traditional Chinese medicines in the 2-3 month growth period. Radix glycyrrhizae preparata and microcos paniculata which are doped in the feed are arranged, so that diseases in the tilapia mossambica can be eliminated, and abdominal cavity black membranes of the tilapia mossambica can be prevented to a certain extent due to reduction of the diseases; and an arranged mixing device can fully mix the fish feed with the radix glycyrrhizae preparata and the microcos paniculata, an extrusion device can continuously push an extrusion block and a sealing cover plate to continuously rotate along with a fixed pin shaft when a rotating shaft rotates, a materials in a discharging pipe slowly descend and fall in batches, and the fish feed can be more fully mixed with the radix glycyrrhizae preparata and the microcos paniculata leaves.

A stripping apparatus for treating the inorganic treating liquid in order to remove organic pollutant from it is composed of a stripping unit, a heat exchange unit for heating said inorganic treating liquid, and a cooling unit for using cooling liquid to cool the over-heat steam before it is introduced to the heat exchanger in order to prevent the deterioration of inorganic treating liquid.

The invention discloses a medicine cabinet with a drying function. The medicine cabinet comprises a cabinet body, a first upper door, a second upper door, a first lower door, a second lower door, a partition plate, a vertical rod, a placement plate, a pipeline, a nitrogen bottle, an exhaust hole, a storage battery box, a fan, an electric heating wire, an LED lamp bar, a plastic transparent plate,a sealing strip, universal wheels and a cabinet door lock. When air is humid, an electric heating wire and a fan can be started, at the moment, the fan blows hot air into the medicine cabinet, air inside the cabinet is dried, the phenomenon that medicine goes bag is effectively avoided, the nitrogen bottle is arranged at the lower half portion, the sealing performance is good, after medicine is stored, nitrogen is introduced into the cabinet, the concentration of oxygen inside the cabinet is lowered, the phenomenon that medicine is oxidized is effectively lowered, medicine easy to store and medicine not easy to store are placed into the same medicine cabinet, medicine can be taken and found conveniently, and use is convenient.

The invention relates to the technical field of chili processing, and concretely relates to a pepper baking oven, the pepper baking oven comprises an oven body internally provided with a baking cavity, an opening is formed in the front side of the oven body, an oven door is arranged at the opening, a heating mechanism is arranged in the oven body, a plurality of placing grooves are formed in the baking cavity, trays containing peppers can be placed in the placing grooves, and each tray is correspondingly provided with a stirring mechanism comprising a stirring part; a driving mechanism for driving the stirring mechanism to stir chilies is arranged in the baking cavity; a sensing mechanism for sensing the tray is arranged in the placing groove, and when the tray is placed in the placing groove, the sensing mechanism automatically pushes a stirring part into the chili from the side surface of the tray. According to the pepper baking oven, when hot peppers are baked, the stirring mechanism is used for automatically stirring the hot peppers, so that the hot peppers are uniformly heated, and the problem that large-batch hot peppers cannot be quickly dried in the prior art is solved.

The invention discloses a nifedipine solid dispersion and a preparation method thereof. The nifedipine solid dispersion comprises nifedipine and at least one carrier, and the mass fraction of the nifedipine is 10%-50%; the method comprises the steps that after the nifedipine and the carriers are respectively smashed, sieved and mixed proportionally, the mixture is extruded out through a differential asymmetric double-screw extruder, and the nifedipine solid dispersion is prepared. By optimizing the formula design and the preparation technology of extrusion of a hot melted body, the nifedipineis combined with povidone through chemical bonds, after being converted into an amorphous state from an original crystalline state, a large amount of nifedipine can be dissolved in water, the dissolution rate is greatly increased, and the bioavailability of the nifedipine is greatly improved; in addition, the solid dispersion is stable in performance, it is avoided that the solid dispersion goes bad due to long-time placement, and the nifedipine solid dispersion and the preparation method thereof have the technical advantages that the hot melting extrusion technology is simple in preparation,and the consumed time is shorter, and are beneficial for achieving industrialization.

An automobile engine oil draining device comprises an underframe, an electro-hydraulic oil cylinder, an oil tank, a motor, a rotating shaft I, a rotating disc, a driving rod, a gear pump, a rubber hose and a three-way valve. Used engine oil flows into an oil delivery pipe II through an oil guide hole via the three-way valve under the action of gravity, and finally is drained into the oil tank; when a flow sensor detects that the engine oil in the oil delivery pipe II slows down, a PLC controls an electric control valve to close and controls the motor to rotate; the motor drives the rotating disc to rotate through the rotating shaft I; the driving rod drives a hub to rotate; the PLC controls a gear pump driving mechanism to drive the gear pump to act at the same time; the gear pump pumps remaining engine oil out of an engine through an oil inlet, an oil pumping pipe connected with the oil inlet and the rubber hose; and the engine oil pumped out of the engine flows into an oil delivery pipe I through an oil outlet of the gear pump after turning at the three-way valve, and finally flows into the oil tank. Therefore, the automobile engine oil draining device ensures that all used engine oil is drained out of the engine; and after new engine oil is added into the engine, the automobile engine oil draining device can effectively avoid the situation that the new engine oil is mixed with used engine oil and thus goes bad.

The invention discloses an automatic transfer device for chilli sauce production, which includes a transfer box, a stirring and dredging component, a fixing rack and rolling wheels, wherein the rolling wheels are symmetrically connected with the bottom end of the fixing rack; the stirring and dredging component is arranged on one side at the top end of the fixing rack; the transfer box is arrangedat the top end of the stirring and dredging component; a header sealing component is arranged at the top end of the transfer box; a feeding pipe is connected with the surface on one side of the transfer box; a transfer pump is connected with the bottom end of the feeding pipe; a discharging pipe is connected with the bottom end of the transfer pump. According to the invention, the header sealingcomponent is arranged to avoid deterioration of chilli sauce caused by contact with air, so that the product quality is guaranteed, product damage is avoided, the product state is convenient to observe, labor intensity is reduced, the working efficiency is improved, and the sealing quality is guaranteed; the stirring and dredging component is arranged to avoid blockage at the discharging port, sothat human and material resources are saved, the risk of short circuit is reduced, and the service life of equipment is guaranteed.

The invention discloses a fresh-keeping method for eolocasia esculenta or water-chestnut. The method includes: firstly washing eolocasia esculenta or water-chestnut clean with water and conducting draining; in terms of weight part, fully mixing 0.02-1 part of a white tea extract or dihydromyricetin, 0.1-3 parts of beta-cyclodextrin and 96.0-99.89 parts of water evenly to obtain a fresh-keeping liquid; soaking the eolocasia esculenta or water-chestnut in the fresh-keeping liquid for 0.2-3min, then picking up the eolocasia esculenta or water-chestnut and performing draining; then conducting subpackaging and carrying out preservation at room temperature or in cold storage. After indoor placement at room temperature for 50 days, the eolocasia esculenta treated by the method provided by the invention has the appearance of fresh eolocasia esculenta and average weight loss of about 15%. After room temperature preservation for 30 days, the water-chestnut treated by the method does not rot, and maintains the appearance peculiar to waste-chestnut, and test meal proves that the water-chestnut is sweet and refreshing and has no peculiar smell. After preservation of the water-chestnut subjected to fresh-keeping treatment for 2 months in a 1-6DEG C refrigerator, the appearance is normal, and test meal proves that the water-chestnut is sweet and refreshing and has no peculiar smell.

The invention discloses a smart home mushroom cabinet, which comprises an L-shaped cabinet divided into a horizontal part and a vertical part, a storage room with a sealed glass door is arranged above the horizontal part of the L-shaped cabinet, and the storage room is separated by at least one partition There are at least two floors, and the storage room is separated from the vertical part of the L-shaped cabinet by a fence. The vertical part of the L-shaped cabinet is equipped with a refrigerator, sprayer and carbon dioxide generator; the horizontal part of the L-shaped cabinet is also equipped with a main controller. The main controller is connected with an alarm, a memory, a touch local control terminal, a network communication unit, and a temperature sensor, a humidity sensor and a carbon dioxide sensor arranged in the storage room, and the main controller is respectively connected with the refrigerator, the nebulizer and the carbon dioxide generator. The present invention solves the problem of the lack of mushroom fresh-keeping cabinets mainly used for households on the market at present, and has a simplified structure, small volume and easy production.

The invention discloses an improved fluorescent protein transgenic mouse tissue fluorescence imaging method. After a short period of fixation at low temperature, the fluorescent protein transgenic mouse tissue is subjected to high-concentration Triton short-time rinsing to improve permeability, then, is dyed with a high-penetration fluorescent dye Hoescht, and finally, is scanned by a confocal microscope to construct a stereo image expressed by fluorescent protein. The method of temporarily fixing the tissue at low temperature not only preserve activity of the fluorescent protein to the maximum extent, but also avoids deterioration and breakage of the tissue in the subsequent experiment operation; and high-concentration Triton short-term rinsing increases tissue permeability, thereby greatly improving Hoescht dyeing efficiency, and making it possible to position a target structure in the tissue during confocal imaging. The 3D confocal images constructed based on the technology have continuous and complete signals and high image quality. The method is simple and feasible and low in cost.

The invention discloses an evaporation source and a vacuum evaporation system and belongs to the technical field of display. The evaporation source comprises a cavity, a crucible and a driving assembly arranged in the cavity, and a heating assembly. The crucible is of a telescopic structure and is used for containing evaporation materials. An air outlet hole is formed in one side of the cavity, and the driving assembly is arranged on the side, away from the air outlet hole, of the crucible. The driving assembly is used for driving the side, close to the air outlet hole, of the crucible to contract. The heating assembly is used for heating the evaporation materials. According to the evaporation source and the vacuum evaporation system, due to the fact that the crucible is of a telescopic structure, the driving assembly can drive the side, close to the air outlet hole, of the crucible to contract. Thus, in the process that the evaporation materials in the crucible are reduced gradually,the distance between the evaporation materials and the air outlet hole can be maintained in a small range all the time, it can be ensured that the deposition rate of the evaporation materials is maintained stable without increasing the heating temperature, and therefore the phenomenon that the temperature is too high, and the quality of a film layer formed on a base plate is affected is avoided.

The present invention provides a camellia oleifera seed storage bucket for processing camellia oleifera, comprising a bucket body and a base, wherein in the middle of the bucket body is provided witha communication pipe, the outer surface of the communication pipe is provided with a spiral plate, a surface of the spiral plate is provided with a first ventilation hole, the interior of the spiral plate is provided with a first cavity, a connection part between the communication pipe and the spiral plate is provided with a second ventilation hole. The interior of the communication pipe is provided with a second cavity, the right side of the upper surface of the bucket body is provided with a feed inlet, the left side of the upper surface of the bucket body is provided with an air outlet. Theleft side of an outer surface of the base is provided with a blower, and the left side of the base is provided with a water tank. The right side of the blower is connected to the water tank through an air inlet pipe, the right side of the water tank is connected to a drying pipe through an air outlet pipe, and the drying pipe is communicated with the second cavity. According to the camellia oleifera seed storage bucket for processing camellia oleifera, the defects of the prior art are overcame, the design is reasonable, the structure is compact, a good moisture-proof drying effect is achievedthrough air circulation, and the utilization rate of camellia oleifera seeds can be effectively improved.

The protective gas multifunctional intervention type medicinal material storage equipment for the traditional Chinese medicine department comprises a bottom plate, a circulation box, a water eliminating barrel, a gas circulation type antibacterial fusion mechanism and a multi-type circulation storage mechanism, the water eliminating barrel is arranged on the upper wall of the bottom plate, and the circulation box is arranged on the portion, on the outer side of the water eliminating barrel, of the upper wall of the bottom plate; the gas circulation type bacteriostatic fusion mechanism is arranged on the inner wall of the circulation box, the multi-type circulation storage mechanism is arranged at the end, away from the circulation box, of the water elimination barrel, the gas circulation type bacteriostatic fusion mechanism comprises a ventilation storage mechanism, an air exhaust filtering mechanism and a gas fusion mechanism, and the ventilation storage mechanism is arranged in the circulation box. The invention belongs to the technical field of traditional Chinese medicine storage, and particularly relates to protective gas multifunctional intervention type medicinal material storage equipment for a traditional Chinese medicine department. According to the protective gas multifunctional intervention type medicinal material storage equipment for the traditional Chinese medicine department, protective gas introduction and corrosion prevention can be conducted on various medicinal materials at the same time, and fungus breeding in the storage barrel can be avoided.

The invention discloses a preparation method of a low-lactose dairy product rich in honey pomelo fibers. The preparation method comprises the following steps of cleaning peel fibers of honey pomelos, performing dicing, and performing debittering treatment so as to obtain honey pomelo fiber blocks; sterilizing liquid milk, performing cooling, performing inoculation with lactic acid bacteria, performing primary fermentation until the lactose content is not reduced, performing coagulation, performing centrifugation, collecting precipitate, adding water to the precipitate until the pH is greater than 5.0, and performing homogenizing treatment so as to obtain primary fermented milk; mixing the honey pomelo fiber blocks with the primary fermented milk, performing inoculation with lactic acid bacteria, and performing secondary fermentation until the lactose content is lower than 0.04%; or performing inoculation with lactic acid bacteria on the primary fermented milk, performing secondary fermentation until the lactose content is lower than 0.04%, and then mixing the primary fermented milk with the honey pomelo fiber blocks; and pre-freezing the honey pomelo fiber blocks treated in the steps, and performing vacuum freeze drying so as to obtain the low-lactose dairy product rich in honey pomelo fibers. Therefore, the problems that the dairy product is short of high-quality cellulose, high in lactose content and high in storage and transportation cost are solved, and the nutrient requirements of crowds suffering from lactose intolerance can be met.

The invention relates to an intelligent water dispenser, which comprises a drinking water production module for producing drinking water, a human-computer interaction module, a water quality detectionmodule, a temperature detection module, an online sterilization module, a waterway protection module and an intelligent timing module, water quality information detected by the water quality detection system and water temperature information detected by the temperature detection system are sent to the human-computer interaction system to be displayed; the intelligent timing module comprises a regular drainage unit used for conducting drainage and emptying operation on the drinking water production module, a timing disinfection unit used for disinfecting a water outlet end pipeline and a wateroutlet of the drinking water production module, and a timing startup and shutdown unit used for controlling operation of the drinking water production module. The water dispenser has an extremely high water quality safety guarantee function and can provide high-quality drinking water anytime and anywhere.

The invention relates to the field of livestock breeding feed additives, in particular to a preparation method of a probiotics additive applied for livestock breeding. The method comprises the steps of conducing pH value adjustment on probiotics fermentation supernate, adding a stabilizer, adding an antioxidant, adding prebiotics and conducting sterilization treatment, wherein the probiotics fermentation supernate is a whole fermentation post-treatment solution which comprises fermentation supernatant of probiotics and the probiotics. According to the preparation method of the probiotics additive applied for livestock breeding, the probiotics additive applied for livestock breeding is stable in storage, has an obvious effect of promoting the growth performance of hogs when applied to feed,and is not only environmentally friendly, but also economical.

The invention discloses a grain storage device with an anti-mildew effect, which comprises a casing, a discharge box and a support rod. The upper end of the casing is provided with a feeding port. A master gear is fixed on a master rotating rod. The master gear and a slave gear are connected with each other. A first threaded piece is fixed on the left side of a slave rotating rod. An exhaust fan is installed at the upper end of the casing. The discharge box is fixed to the lower end of the casing. A discharge hole is disposed on the lower end of the discharge box. A material blocking plate isinstalled inside a slide rail. The right end of the material blocking plate is arranged inside a working slot. The support rod is fixed on the lower end surface of the discharge box. The grain storagedevice with an anti-mildew effect uses new structure design to place the grain in a structure with a stirring function, is provided with a structure with a ventilation function to solve the problem that a conventional device cannot effectively prevent the stored grain from being mildewed, and is provided with a structure with a reclaiming function to avoid the inconvenient reclaiming.

The invention relates to the technical field of smart home equipment, and discloses a safety protection device for a smart home refrigerator. The safety protection device for the smart home refrigerator comprises a body, wherein a rotating rod is movably connected to the interior of the body; a gear is fixedly connected to the exterior of the rotating rod; a rack is engaged to the exterior of thegear; a connecting rod is movably connected to the exterior of the rack; helical teeth are arranged on the surface of the connecting rod; and a spring II is fixedly connected to the exterior of the connecting rod. Through the interaction among a rotary table, a limiting shell, a spring I, an electric wire, an electrorheological fluid, a movable block and a rotating rod, the opening of a refrigerator door can be limited after the refrigerator door is closed, so that the situation that the physical health of children is harmed due to the fact that the children open the refrigerator door when playing at home can be avoided, meanwhile, the situation that a child at home eats cold food in the refrigerator at home and feels uncomfortable in body consequently can be avoided, the use safety of thehousehold refrigerator is greatly improved, and meanwhile, the household refrigerator can better meet the actual use requirement.

The invention provides a copper and aluminum wiredrawing liquid and a preparation method thereof. The liquid is characterized by comprising the following raw materials by weight parts: 10-12 parts of base oil, 1-2 parts of castor oil potassium soap, 2-3 parts of vulcanized whale oil, 0.3-0.5 parts of sodium benzoate, 10-12 parts of 3-iodo-2-propynyl butyl carbamate, 2-3 parts of 3-aminopropyl trimethoxysilane, 1-2 parts of an anti-oxidant 1010, 1-2 parts of dodecanedioic acid, 0.3-0.5 parts of zirconium dioxide, 2-3 parts of sorbitan fatty acid ester, 2-3 parts of a film forming auxiliary agent and 200-220 parts of water. According to the invention, the 250 SN base oil is used to promote lubrication performance, a water base is used to play a relative good heat dissipation effect, and the anti-oxidant are added to prevent deterioration after the wiredrawing liquid is stored for a long time. Meanwhile, a corrosion inhibitor and the film forming auxiliary agent are added in the formula provided by the invention, so as to play roles of corrosion inhibition and protection.