210results about How to "Play a closed role" patented technology

The invention belongs to the technical field of engineering blasting and discloses an annular linear energy-accumulation cutter. The annular linear energy-accumulation cutter comprises a restraining shell, explosives, liners and a detonation device, wherein the restraining shell is a columnar pipe; a plurality of semi-circular tubular linear liners are arranged inside the shell; notches of the pipes all face towards and are in contact with the inner wall surface of the shell; the outer walls of each two adjacent semi-circular tubes are in tangent mutually; the length of each tube is the same as the length of the restraining shell, and the axes of each tube and the restraining shell are in parallel; a middle space surrounded by the liners is filled with the explosives and is provided with a detonating fuse; the axis of the middle space is coincided with the axis of the restraining shell; the restraining shell and the liners are made of metal materials or plastic materials; and the explosives are common industrial explosives. The annular linear energy-accumulation cutter reasonably utilizes the energy of the explosives and can be used in excavating operation in coals or rocks and generate a plurality of cracks in the coals or the rocks; and the annular linear energy-accumulation cutter is particularly applicable to middle and deep hole pre-cracking blasting of coal seams and can effectively reduce or eliminate the danger of gas burst in the coal seams and prevent or reduce severe mining safety accidents such as gas burst or fire hazard.

The invention relates to nanoliposome human papillomavirus (HPV) resistant and gynecological inflammation pathogen resistant specific complex IgY and a combined preparation for the same. Laying poultry is preferred to respectively prepare laying poultry for immunity of tumor somatic cells, viral protein complex antigens, gene recombination protein antigens and bacterial virus complex antigens; and human papillomavirus resistant special IgY and gynecological inflammation pathogen resistant specific IgY undergo affinity chromatography and purification and are converted into nanoliposomes, and then the nanoliposome special complex IgY is prepared. The nanoliposome human papillomavirus (HPV) resistant and gynecological inflammation pathogen resistant specific complex IgY and the combined preparation for the same have the advantages that: the nanoliposome technology is applied to increase the infiltration capacity and the prolongation effect and improve the curative effect. The nanoliposome human papillomavirus (HPV) resistant and gynecological inflammation pathogen resistant specific complex IgY and the combined preparation for the same can be prepared into various vaginal spraying agents, other spraying agents, lotion, gel, capsules, suppository, vaginal membranes, tablets, effervescent tablets, ointment, cream and so on. The nanoliposome complex IgY can infiltrate into a vagina mucosa to effectively remove HPV viruses and gynecological inflammation pathogens which are absorbed on the vaginal surface layer and in the vagina mucosa, is absorbed through the vagina mucosa and enters into the body to give play to the functions of prevention and treatment, and also can effectively prevent recrudescence.

The invention relates to organic-inorganic nano composite resin and a preparation method thereof, belonging to the technical field of biomedical high-molecular materials. The organic-inorganic nano composite resin is characterized in that polyfunctional reactive nano monomer, i.e. polyhedral oligosilsesquioxane (POSS) is added on the basis of organic matrixes and inorganic fillers. The preparation method comprises the steps of adding the POSS into the resin matrixes, placing in a constant-temperature oven, fully dissolving the POSS in the resin matrixes and even agitating; adding an initiator system and evenly agitating; adding the inorganic fillers which are subject to surface silanization treatment, fully and evenly agitating in a vacuum agitator and removing air bubbles to obtain nano composite resin paste. By adding the POSS into dental composite resin, polymerization shrinkage can be obviously reduced, the mechanical property of the composite resin is comprehensively improved, the micro-leakage performance and the biocompatibility are good and the application prospect in the field of oral rehabilitation is wide. Besides, the preparation process is simple, the cost is lower and the popularization value and the application value are great.

The invention relates to a quantum dot film, particularly an edge-self-sealing quantum dot film. The edge-self-sealing quantum dot film is provided with a quantum dot layer, wherein a water oxygen barrier layer is respectively arranged on the upper and lower surfaces of the quantum dot layer; the quantum dot layer is composed of liquid microcapsules, quantum dots, dispersed particles, a matrix resin and a film forming aid; the liquid microcapsules are uniformly distributed in the quantum dot layer; each of the liquid microcapsules is provided with a liquid capsule core; and a solid capsule wall is arranged outside each liquid capsule core. After the edge-self-sealing quantum dot film is cut off, the liquid microcapsules at the notch can be cut off, the film forming liquid in the liquid microcapsules can seep and be fused mutually, and the liquid can implement homogeneous immersion on the film edge under the action of surface tension; and the liquid can be cured to form a film under the condition of normal temperature, heating or ultraviolet irradiation, thereby performing a sealing function on the edge of the quantum dot film. The sealing process is not limited by the edge contour of the film, and the edge-self-sealing quantum dot film can also have a sealing effect on the internal edges of complicated film edge contours or locating hole films.

The invention relates to the field of magnesium alloy, in particular to a preparation method of a comprehensive protective wave-absorbing coating on the surface of magnesium alloy and various coatings prepared by the method. The wave-absorbing coating is coated on a micro-arc oxidized ceramic layer on the surface of the magnesium alloy, so that the comprehensive coating which is good in corrosion resistance and in wave-absorbing functionality can be prepared. The invention adopts a magnesium alloy micro-arc oxidation technology and a wave-absorbing coating composite technology, the stable micro-arc oxidation technology is carried out in case of large area by the magnesium alloy micro-arc oxidation technology, and a ceramic layer with a compact microstructure is prepared, so that the corrosion resistance of the magnesium alloy can be obviously improved. The wave-absorbing coating composite technology can be used for sealing the ceramic layer, so that the corrosion resistance of the ceramic layer can be further improved, and the ceramic layer has the function of wave absorption as well. The comprehensive coating provided by the invention has the characteristics of being good in corrosion resistance, wide in electromagnetic wave absorbing frequency range, high in absorption rate, firm in surface bonding and the like, is widely applicable to the fields such as aviation, aerospace, war industry and electronic products, and is high in social value and economic value.

The invention relates to a natural moisture-preserving and skin-protecting composition and application thereof in cosmetics. The composition is composed of, by weight ratio (wt%), 1-12% of buckwheat seed extract, 1-10% of coix seed extract, 1-13% of licorice root extract, 1-10% of ginseng root extract, 1-12% of mulberry leaf extract, 1-13% of poria cocos extract, 1-12% of parsnip root extract, 1-11% of rhodiola rosea extract, 1-14% of honey extract, 1-13% of officinal magnolis flower extract, 1-15% of apple puree extract and 1-12% of grape seed oil. An adding amount of the composition in the cosmetics is 1-30wt%. The natural moisture-preserving and skin-protecting composition is far better than one-component hydrating agent in moisture absorbing and preserving performance, high in skin infiltration capacity, good in stability, all natural, safe and nonirritant, has nourishing and moistening effect, and completely replace existing chemosythetic hydrating agents to be applied to various cosmetics.

The invention relates to an electrochemical L-lysine sensor based on a graphene material and a preparation method thereof. The preparation method comprises the following steps: modifying a glassy carbon electrode with L-lysine oxidase, with the graphene material as a sensitizing material; and separately arranging the modified glassy carbon electrode used as a working electrode, a saturated calomelelectrode used as a reference electrode and a platinum electrode used as an auxiliary electrode in an electrolytic bath to form a three-electrode system so as to prepare the electrochemical L-lysinesensor. The invention also relates to application of the electrochemical L-lysine sensor based on the graphene material to detection of L-lysine in food or medicines. The electrochemical L-lysine sensor based on the graphene material has the advantages of simple and rapid detection, high sensitivity and low cost and can achieve the purpose of high-selectivity identification and detection of L-lysine.

The invention relates to the field of aluminum alloys, in particular to a method for preparing a wave-absorbing functional protecting coating on the surface of an aluminum alloy and various coatings prepared by the method. The method comprises the following steps of: preparing a micro-arc oxidized ceramic layer on the surface of the aluminum alloy; and then compounding a wave-absorbing coating on the surface of the oxidized ceramic layer to prepare the aluminum alloy wave-absorbing functional coating with corrosion resistance and a wave-absorbing function, the ceramic layer with a compact microstructure is prepared by the method, and the corrosion resistance of the aluminum alloy is obviously improved. The wave-absorbing coating compounding technology has the effect of sealing the porous ceramic layer, so while the corrosion resistance of the ceramic layer is improved, the wave-absorbing function of the ceramic layer is achieved. In addition, the absorption strength and an absorption peak frequency interval are effectively changed by adjusting the type, the content and the electromagnetic parameters of a wave-absorbing agent and the thickness of a coating. The comprehensive coating prepared by the method has the characteristics of high corrosion resistance, firm surface bonding strength, wide electromagnetic wave-absorbing frequency range and the like, and can be widely applied to fields, such as aviation, spaceflight, military industry and electronic products.

The invention discloses a selective coating for absorbing solar light and heat which belongs to field of solar energy equipment, particularly, relates to a selective absorbing coating which is used on the surface of the flat-plate solar collector and is used for absorbing and utilizing solar energy. The selective coating for absorbing solar light and heat is formed by compounding a plurality of layers of metal and non-metal, the selective solar energy is attached on a metal flat plate; the characteristics are as follows: the attachment sequence of the coating on the metal flat plate is as follows: a bottom layer-aluminum nitride composite layer-aluminum nitride composite layer- aluminum oxide (wherein, after the second layer of aluminum reacts with N2, whether new aluminum nitride composite material is generated). The invention provides a selective absorbing film with excellent selective absorption characteristic of solar energy and firm film, which is provided with high binding strength, good weatherability, as well as high production efficiency in production.

The invention discloses a steel bar derusting device with debris treatment function, which comprises a support frame, a rust removal cylinder and a debris collection frame; The bottom of the derusting cylinder is provided with a partition, the center of the left end of the derusting cylinder is connected to the rotating shaft, and the rotating shaft is connected to the first motor that drives it to rotate. There are floating grinding balls, an opening is opened on the right side plate of the derusting cylinder, and a matching closing plate is provided on the right side of the opening; the derusting cylinder is equidistantly provided with multiple groups of leakage holes along the length direction; A through hole is opened at the center of the partition; the debris collection frame is located under the partition, and the opening of the debris collection frame faces the through hole. The invention can effectively complete the derusting work of steel bars, and at the same time facilitates the collection of debris generated during the derusting process.

The invention provides a medical tissue closing glue composition, medical tissue closing glue and a preparation method and application thereof. The medical tissue closing glue composition comprises a first component and a second component, wherein the first component comprises an amino containing natural substance and / or a first modified product obtained by modifying the amino containing natural substance with sulfydryl groups, and the amino containing natural substance and the first modified product respectively have ten or more active groups which are amino groups and sulfydryl groups; the second component comprises a second modified product obtained by modifying chitosan and / or polylysine with ten or more vinyl groups. The medical tissue closing glue has high rupture strength, a low swelling ratio and good adhesiveness, tissue wound surfaces can be quickly closed, the effect of closing tissue is effectively achieved, interstitial fluid or blood or cerebrospinal fluid is prevented from leaking, the pain of a patient can be relieved, and more danger is avoided.

The invention provides a water-based floor alkali-resistant sealing primer which is prepared by mixing the following components in percentage by weight: 70-80% of organosilicon-acrylate copolymer emulsion, 1-10% of silicasol, 10-18% of water, 0.1-0.3% of mineral oil defoaming agent, 0.1-0.3% of organosilicon defoaming agent, 1-2.4% of ethylene glycol monobutyl ether, 1-2.4% of dipropylene glycol monobutyl ether, 0.1-0.3% of wetting agent and 0.1-0.4% of preservative. The invention has the advantages of excellent alkali resistance, excellent water resistance, excellent water resistance, excellent salting-out resistance, excellent sealability, strong adhesive force, high hardness, favorable film-forming property, no cracking of thick coating, and no bubble.

The invention discloses high-polymer easy plaster and belongs to the field of polymer waterproof mortar. The easy plaster comprises raw materials in parts by weight as follows: 30-50 parts of cement, 40-80 parts of quartz sand, 10-25 parts of ash calcium powder, 3-7 parts of polyvinyl alcohol and 2-4 parts of re-dispersible emulsion powder. The raw materials of the high-polymer easy plaster are simple and easy to obtain, and the product is environment-friendly, has excellent bonding strength, prominent impermeability, suitable setting time and water retention and alkali-resistant properties and the like and can be widely applied to permeability and damp resistance and waterproof plugging of positions such as internal and external walls, basements, swimming pools, toilets, water reservoirs and the like.

The invention discloses a paint spraying device convenient to use for automobile production. The paint spraying device comprises a base, a box body and a motor are fixedly connected to the two sides of the bottom of an inner cavity of the base, the top and the bottom of the left side of the box body communicate with a liquid injection pipe and a liquid drainage pipe, the ends, away from the box body, of the liquid injection pipe and the liquid drainage pipe penetrate out of the base, the left end of the liquid drainage pipe is sleeved with a pipe sleeve, and the right side of the output end ofthe motor penetrates out of the base and is sleeved with a driving wheel. By arranging the base, the box body, the motor, a protection cover, the driving wheel, a belt, a first rotating rod, a drivenwheel, a clamping plate, a drier, a paint spraying box, a water pump, a spray head, a connection pipe, an air filter, a shell, a second rotating rod, an electric telescopic rod, the liquid injectionpipe, the pipe sleeve, the liquid drainage pipe and a box door, the problem that existing some paint spraying devices for automobile production is inconvenient to use is solved, and the paint sprayingdevice for automobile production has the advantage of being convenient to use.

The invention relates to veneering decorative paper having a flame-retardant effect and a flame-retardant veneering artificial board using the same. The veneer decorative paper is prepared by the following method: 1) taking needle leaf wood pulp and broad leaf wood pulp, respectively beating, mixing and defibering, adding a titanium dioxide dispersion liquid, a retention aid, a wet strength agentand modified starch paste, to prepare original paper; 2) carrying out double-side coating on the obtained original paper with silica sol to obtain modified paper A; (3) carrying out impregnation treatment on the modified paper A with a borax solution to obtain modified paper B; and 4) carrying out double-side coating and gluing on the modified paper B with a soybean protein glue liquid with the gluing amount of 12-15 g / m<2>, and then carrying out press polishing with a press polishing machine. The obtained veneering decorative paper makes a flame-retardant agent added to the paper by using silica sol coating and borax solution impregnating, so the limit oxygen index of the decorative paper and the ignition time of the veneering artificial board are improved, and a good effect on preventingthe expansion and spreading of fire is achieved. The decorative paper does not contain formaldehyde, can greatly reduce the formaldehyde release amount of the veneering artificial board, and is suitable for promotion and use.

The invention provides an exosome coupled with coronavirus S protein on the surface and a preparation method for the exosome and application of the exosome, and belongs to the technical field of biological pharmacy. A stable cell line is obtained through transient transfection of human cells or infection with a recombinant lentivirus to achieve recombinant expression of aptamer CP05-S protein, andthe aptamer CP05-S protein is mixed with human plasma for incubation, and the exosome is bound to an aptamer CP05 through surface CD63 membrane molecules to form the exosome coupled with the S protein on the surface. The exosome provided by the invention is employed to present antigen S protein, so that a prepared vaccine avoids the toxicity of an immunologic adjuvant and the risk of virus vaccine infection, and loading the S protein to the surface of the exosome to prepare the vaccine is an ideal vaccine development strategy, and is also an ideal strategy for blocking a virus invasion route;and meanwhile, the S protein is delivered through the exosome, and thus, competitive inhibition can be performed on binding of the S protein of the novel coronavirus to a receptor, the blocking action is exerted, and invasion of the novel coronavirus is effectively blocked, and accordingly, as an inhibitor for novel coronavirus infection, the exosome coupled with the S protein can be used for treatment of acute novel coronavirus pneumonia.

The invention provides a passive intelligent manhole cover management system. The technical solution is based on the communication between an electronic key and a smart lock to realize the unlocking function. On this basis, the authorization, authentication, management, statistics and other links are introduced to meet the complex use requirements. Specifically, in the passive intelligent manholecover management system, a card reader is used to authorize the electronic key in the background; after the electronic key is inserted into the lock hole, the built-in battery is first used to power the lock, and send an unlock command to the lock, and at the same time, the lock compares the stored authorization information with the authorization information recorded in the electronic key, and thelock is opened when the comparison passes; and in addition, the electronic key can store each unlocking information and locking information, and the card reader can read and store the information aslog information, so as to realize the traceability of the lock status. Based on the system structure provided by the invention, it is possible to authorize unlocking according to the identity and timeinterval of the personnel, and to record the unlocking log, which has outstanding technical advantages.

The invention relates to the technical field of flashlights and discloses a flashlight with waterproof and anti-dropping functions. The flashlight comprises a casing, wherein a partition board is fixedly mounted at the top of the casing; a lampshade is fixedly mounted at the top of the partition board; a bulb is fixedly mounted at the top of the partition board and located in the lampshade; a glass sheet is fixedly mounted in the lampshade and located at the top of the bulb; damping springs are fixedly mounted in the casing; damping plates are fixedly mounted at the ends, away from the inner side wall of the casing, of the damping springs. According to the flashlight with the waterproof and anti-dropping functions, the damping springs and the damping plates are mounted in the casing, so that when the flashlight drops, the damping springs are compressed to absorb energy produced by external collision, and the anti-dropping purpose of the flashlight is achieved; by arranging sponge cushions, parts in the flashlight are prevented from being damaged by collision, the anti-dropping effect is realized, the sponge cushions can also absorb water when a small amount of water enters the flashlight accidentally, and the waterproof purpose is achieved.

Provided are a hydraulic pipe cleaner and a cleaning method thereof. The pipe cleaner comprises an elastic rubber water diversion tube, one end of the elastic rubber water diversion tube is connected to a booster pump, and the other end of the elastic rubber water diversion tube is connected to a self-expanding nozzle. The method includes the steps of connecting the booster pump and the self-expanding nozzle to both ends of the elastic rubber water diversion tube respectively, wherein the self-expanding nozzle is composed of a guide ring and a horn-shaped bag, a large opening of the horn-shaped bag is connected to the guide ring, and a small opening of the horn-shaped bag is connected to the other end of the elastic rubber water diversion tube; inserting the self-expanding nozzle into a pipe to be cleaned, wherein the guide ring of the self-expanding nozzle forms preliminary sealing to the pipe wall of the pipe to be cleaned and slides in the pipe to be cleaned to drive the horn-shaped bag of the self-expanding nozzle to enter the pipe to be cleaned and settle down; starting the booster pump and filling water to the pipe to be cleaned to constantly increase the pressure of the cleaning water until clogging material in the pipe to be cleaned can be washed away by the high pressure cleaning water.

The invention discloses an electrified test micro water interface special for SF6 inflating equipment. The electrified test micro water interface is characterized by comprising a sealing screw cap (1), wherein a gas release valve (4) is arranged at the front end of the sealing screw cap (1); the interior of the sealing screw cap (1) is in threaded connection with a thimble connecting rod (6); a test interface thimble (3) is arranged in the thimble connecting rod (6) which is in threaded connection with an interface filtering device (2); and a quick connector (5) is arranged on the quick interface filtering device (2). The electrified test micro water interface disclosed by the invention can be measured in an electrified manner, can be used for finding the gas leakage condition at any timeand playing a well role of better protection as well as has the advantages of accuracy in data test, simpleness and convenience in operation, wide application range, high safety performance and favorable sealing effect.

The invention discloses a resilience tester for engineering supervision, which relates to the technical field of engineering supervision, and comprises a cylinder body and an impact hammer. There is a center guide rod inside, one end of the center guide rod is covered with a bullet rod, the other end is fixed with a guide flange and a firing mechanism, and the outside of the bullet rod is covered with a spring spring, and the bullet rod faces the side of the center guide rod. One end is provided with a guide blind hole, and the bottom wall of the guide blind hole is fixed with a grease reservoir containing grease, and a channel is opened in the direction of the inner axis of the central guide rod, and a plurality of micro-holes communicating with the channel are opened on the surrounding wall. When the center guide rod extends into the inside of the ejection rod, the grease reservoir is connected to the channel, and the grease can enter the center guide rod through the grease reservoir and lubricate its peripheral side, and the outer wall of the center guide rod is realized through the grease reservoir. Self-lubricating, thereby reducing the resistance of the hammer movement and improving the detection accuracy.

The invention relates to a bituminous pavement provided with a lattice structure transition compound layer. The lattice structure transition compound layer is arranged between a semi-rigid base layer (7) and a bituminous concrete surface layer (4) of the bituminous pavement; and the lattice structure transition compound layer comprises a rubber bituminous stress absorption layer (5) and a lattice sandwich coil which is tightly adhered above the rubber bituminous stress absorption layer. The lattice sandwich coil sequentially comprises a piece of geotextile (1) for covering petroleum bitumen, columnar rubber grains (2) and a piece of geotextile (3) covering with rubber bitumen. According to the bituminous pavement disclosed by the invention, the current problems of stacking a plurality of wasted tires and pollutants are solved according to the reduction of the bituminous pavement or the delaying of the generation of reflection cracks, and the environmental friendliness and the resource recycling are integrated. The bituminous pavement can be used for the technical field of road engineering.

The invention discloses a pretreatment method for the matrix surface of a CVD diamond coating, and solves the problems of the prior art that the bottom layer structure of a diamond film is damaged since the deep-layer cobalt atoms migrate to the matrix surface layer during the coating operation and consequently the film substrate adhesion is reduced. The pretreatment method comprises the followingsteps: performing ultrasonic cleaning of hard alloy wire-drawing dies and drying the hard alloy wire-drawing dies; putting the hard alloy wire-drawing dies in order into a graphite crucible; puttingthe crucible into a vacuum carbonization furnace, and pumping air till ultimate vacuum; introducing hydrogen, heating to a set temperature and controlling the reaction pressure for reaction; after thereaction, shutting off hydrogen and vacuumizing till ultimate vacuum; lowering the temperature of the reaction chamber, introducing oxygen into the reaction chamber and controlling the reaction pressure; after the reaction, turning off the power supply and the air supply, and vacuumizing the reaction chamber till ultimate vacuum; then closing a valve of the reaction chamber; after the dies are naturally cooled to normal temperature, taking out the dies for detection; performing ultrasonic crystal implantation on the qualified wire-drawing dies, and cleaning and drying the qualified wire-drawing dies. The method disclosed by the invention has the advantages of scientific design and simple process.

The invention discloses a deep-layer dry heat rock and medium-deep-layer geothermal source energy-gathering heat-exchange device, belongs to the technical field of geothermal energy heat-taking devices, and solves the problem of low heat-taking efficiency of high-temperature heat exchange medium after heat exchange and pressure building in a well during the lowering process of a sleeve. The solution is that the device comprises a heat-taking device and a sliding sleeve, wherein the sliding sleeve is arranged below the heat-taking device; the heat-taking device comprises an outer heat-taking sleeve, a central sleeve and an insulation pipe; the insulation pipe is arranged on the central sleeve; and the side wall of the insulation pipe is provided with a hollow interlayer; the sliding sleevecomprises an energy-gathering sleeve, a sliding sleeve housing and a sliding sleeve connecting seat for connecting the energy-gathering sleeve with the sliding sleeve housing; and the central part ofthe sliding sleeve housing is provided with a sliding sleeve center pipe, and a pressure relief plug is fixedly installed on the inner side wall of the sliding sleeve center pipe through a fixed connecting column. According to the invention, the heat exchange medium input into the heat exchange device is increased, heat dissipation again of the high-temperature heat exchange medium after heat exchange during the transportation process in the well is avoided, the heat exchange efficiency is improved, and the pressure building in the well during the lowering process is avoided through arrangement of the sliding sleeve.

The invention discloses a cleaning member of a water purifier filter core. The cleaning member includes an inner core and a housing, the inner core is mounted in the housing through fixed brackets, an internal cycling interlayer is formed between the inner core and the housing through the support of the fixed brackets, the inner core includes a filter membrane and an internal duct, the filter membrane is fixedly mounted on the external surface of the internal duct, a filter layer is arranged between the filter membrane and the internal duct, two ends of the internal cycling interlayer are respectively connected to a water inlet pipe and a blowdown pipe, one end of the filter membrane is fixedly equipped with a conversion port, the conversion port is connected to a purified water outlet pipe and a backflushing water inlet pipe, the water inlet pipe, the blowdown pipe, the purified water outlet pipe and the backflushing water inlet pipe are all fixedly equipped with valves, by means of high pressure back flushing, the purpose of cleaning filter core surface impurities can be achieved. The cleaning member provided by the invention can quickly, conveniently and effectively perform high frequency filter core flushing.

The invention discloses a three-way hydraulic joint, and relates to the technical field of pipe fitting connection. The three-way hydraulic joint comprises a main pipe, a first connecting pipe, a second connecting pipe and the like, a first sealing cover, a second sealing cover and a third sealing cover play a role in sealing a first connector, a second connector and a third connector correspondingly, according to the specific situations, when the first connector, the second connector or the third connector is not used, the first sealing cover, the second sealing cover or the third sealing cover is mounted, and when the first connector, the second connector or the third connector is used, the first sealing cover, the second sealing cover or the third sealing cover is dismounted. The three-way hydraulic joint can meet the requirements of different hydraulic joints required to be used in the production process, a fourth sealing cover is arranged on a fourth connecting pipe in a matched mode, when a fourth connector is not used, the fourth connector can be dismounted, the fourth sealing cover is mounted, and the fourth connecting pipe is sealed.

The invention discloses a trash can with a trash compression function and relates to the field of trash cans. The trash can comprises an outer can body. A short rod is rotatably connected to one sideof the inner wall of the outer can body through a bearing, an inner can body is fixedly connected to the end, away from the outer can body, of the short rod, a rotation rod is fixedly connected to oneside of the inner can body, and the end, away from the inner can body, of the rotation rod penetrates through the outer can body and extends to the exterior of the outer can body. A handle is fixedlyconnected to the end, extending out of the outer can body, of the rotation rod, the two sides of the inner wall of the inner can body are provided with first slide grooves, a press plate is slidinglyconnected between the two first slide grooves, and the top and bottom of the press plate are provided with second slide grooves. According to the structure of the trash can, trash in the trash can iscompressed, so that the trash fits each other more tightly, the effect of enlarging the storage space of the trash can is improved, the application effect is good, trash and sewage in the trash can are conveniently discharged, the burden of workers is reduced, and the trash can has high practicability.

The invention provides a highly effective moisturizing liquid and a preparation method thereof. The highly effective moisturizing liquid comprises the following raw materials by weight: 5-10 parts ofmalto-oligosaccharide glycosides, 4-7 parts of hydrogenated starch hydrolysate, 10-15 parts of stearyl alcohol, 2-5 parts of sodium polyacrylate, 5-10 parts of polyglyceryl methacrylate, 1-3 parts ofbenzophenone, 1-2 parts of hyaluronic acid, 1-4 parts of monoglyceride, 2-5 parts of carboxymethyl fiber, and a proper amount of deionized water. The highly effective moisturizing liquid obtained by the invention has good moisturizing performance, and also has the function of activating cells, improving smoothness and elasticity of the skin, and improving the skin delicateness.

The invention discloses a finishing technology for the yellowing prevention silk fabric, and belongs to the technical field of silk. The finishing technology comprises the following steps: dissolving waste silk by using a lithium bromide solution to prepare a silk fibroin solution; immersing silk fabric into the silk fibroin solution containing ethylene glycol diglycidyl ether, taking out the silk fabric, naturally curing, and then immersing the silk fabric into a titanium dioxide sol solution; performing heat treatment after twice immersing and twice rolling; washing and drying to obtain the silk fabric subjected to yellowing-prevention finishing. The finishing method is simple and convenient to operate, can protect silky luster of the silk fabric, and has outstanding advantages in anti-aging and yellowing prevention; the waste silk is used as a raw material, so that the finishing method is environment-friendly and conducive to resource regeneration; the silk fabric prepared by the finishing method is comfortable, safe, environment-friendly, healthy and fashionable.

The invention discloses an organic fertilizer fermentation device and a using method thereof. The fermentation device comprises a fermentation shell, a rotating structure and a stirring structure, wherein the feeding structure is arranged at the top of the fermentation shell, a through hole is formed in the top of the feeding structure, and the feeding structure comprises at least two excrement inlets, a water pipe and an oxygen pipe; the rotating structure comprises a rotating motor; the stirring structure is arranged in the fermentation shell and comprises a stirring rod and two stirring blades, the top of the stirring rod penetrates through the through hole to be connected with an output shaft of the rotating motor, the stirring rod is hollow and is provided with a partition plate in the vertical direction, the partition plate divides the interior of the stirring rod into a water cavity and an oxygen cavity, the water cavity is communicated with a water pipe, two columns of drainage holes are formed in the side wall of the water cavity, the oxygen cavity is communicated with an oxygen pipe, two columns of vent holes are formed in the side wall of the oxygen cavity, a plurality of through holes are formed in the stirring blades, and blades are arranged in the through holes. The fermentation time is shortened, the production efficiency is improved, the manure is uniformly fermented, and the uniform quality of the organic fertilizer is ensured.