72results about How to "Reduce oxidation rate" patented technology

The invention relates to the technical field of welding devices, in particular to an aluminum alloy door and window welding machine which comprises a mounting support, an air cylinder is mounted at the upper end of the mounting support, an output shaft of the air cylinder penetrates through the mounting support, and a welding mechanism is mounted on the output shaft of the air cylinder and comprises a first mounting plate fixedly connected with the output shaft of the air cylinder. An exhaust mechanism is mounted on the other side of the first mounting plate, four sets of first electric telescopic rods are mounted on the inner side of the mounting support, clamping mechanisms are mounted on output shafts of the first electric telescopic rods, and welding seams between arc-shaped window frames can be welded through mutual cooperation of second electric telescopic rods and first welding heads; and welding can be conducted on inner side welding seams of the assembling grooves, welding is more comprehensive, connection between the arc-shaped window frames is more stable, through mutual cooperation of a fourth gear and a third electric telescopic rod, comprehensive cleaning is conducted on the peripheries of the welding seams, cracks and bubbles during welding are avoided, and the welding seams are firmer.

The invention discloses an oligopeptide from undaria pinnatifida and application thereof. The amino acid sequence of the oligopeptide is YRKD, and the molecular weight is 580.63 g / mol. The polypeptide is identified from undaria pinnatifida through a high performance liquid chromatography technology for the first time, and an unreported oligopeptide capable of inhibiting tyrosinase and cooperating with vitamin C to synergistically inhibit tyrosinase is screened out. The oligopeptide derived from undaria pinnatifida is synthesized by a solid phase method, has the characteristics of safety, no toxicity, good water solubility and good stability, and is combined with vitamin C to generate a synergistic effect and synergistically increase the inhibition effect on tyrosinase, so that the oligopeptide can achieve a better tyrosinase inhibition effect at a lower and more stable concentration; the use concentration of the oligopeptide can be greatly reduced, the stability is enhanced, and the oligopeptide can be widely applied to preparation of cosmetics, medicines, health-care products or food additives, and has important economic value and social significance.

The invention relates to a crushing and grinding process and device for preparing meal replacement food, and belongs to the technical field of food grinding, and the crushing and grinding device for preparing the meal replacement food comprises a grinding tank, a grinding mechanism, a rolling brush mechanism, a cutting and conveying mechanism and a knocking mechanism. Through cooperative use of the rolling brush mechanism and the grinding mechanism, when a rotating grinding disc in the grinding mechanism rotates to grind food raw materials, the rolling brush mechanism can be driven to work, a first spiral brush rotates while rotating, and a second spiral brush can be driven to rotate; the first spiral brush is used for rolling and brushing powdery food raw materials adhered to the gap between the rotating millstone and the bottom millstone, and the second spiral brush is used for rolling and brushing powdery food raw materials adhered to the gap between the rotating millstone and the top millstone, so that accumulation and adhesion of the powdery food raw materials are avoided, and the grinding efficiency is ensured; and the situation that subsequent raw material grinding is polluted due to adhesion of the powdery food raw materials is prevented, and the quality of the prepared meal replacement food is guaranteed.

The invention relates to the technical field of nuclear fuel cladding, in particular to a diffusion impervious layer based on an accident fault-tolerant fuel cladding Cr coating and a preparation method of the diffusion impervious layer, the diffusion impervious layer is composed of any one of thorium Th, niobium Nb, molybdenum Mo and a SiCf / SiC composite coating, and a pure Cr coating is arranged outside the diffusion impervious layer. According to the nuclear power cladding tube, the diffusion barrier layer is arranged between Zr and Cr, so that the Zr matrix and the Cr coating are separated, and diffusion between the Zr matrix and the Cr coating is slowed down, so that the oxidation speed of the Cr coating is reduced, the water loss accident resisting capacity of the cladding is improved, and then the nuclear power cladding tube is safer under the LCOA working condition; due to the fact that the diffusion barrier layer can effectively restrain mutual diffusion between the Cr coating and the zirconium alloy matrix, the high-temperature service performance of the coating is improved, the high-temperature oxidation resistance of the accident fault-tolerant fuel cladding Cr coating is further improved, and the survival time of a fuel cladding pipe under the LOCA accident can be prolonged.

The invention relates to the technical field of tire manufacturing, in particular to a puncture-resistant tread rubber composition for bicycles and electric vehicles, a mixing method and a tire. According to the composition, a rubber base material and an auxiliary system are carefully selected, and aramid short fibers subjected to surface treatment are combined, so that the puncture resistance of the material is remarkably improved, good elasticity and aging resistance are kept, and good balance between the puncture resistance and the elasticity is realized.

The invention relates to the technical field of building reinforcement, in particular to a building reinforcement structure which comprises a positioning component, a metal net, a concrete injection molding layer and a pouring mold, a building column is arranged on the inner side of the positioning component, a carbon fiber hanging net is arranged on the outer side of the building column, and the positioning component comprises a positioning frame. The pouring mold comprises a positioning frame, a fixing screw rod is arranged at the outer end of the positioning frame, fixing nuts are installed at the two ends of the fixing screw rod, the pouring mold comprises a mold plate, a clamping frame is arranged on the outer side of the mold plate, and a clamping block is arranged on the inner side of the clamping frame. The outer side of the building column body is wrapped with the carbon fiber hanging net, the firmness of adhesion of the reinforcing structure and the upper mounting face of the building column body is improved, the concrete injection molding layer is supported through the positioning component and the metal net, the supporting force of the concrete injection molding layer is improved, formworks are connected through the clamping and fixing frame and the clamping blocks, and the convenience of formwork assembly and disassembly is improved.

The invention discloses a diaphorina citri slow-release attractant and a preparation method thereof, the diaphorina citri slow-release attractant is composed of ethyl butyrate, myrcene, p-cymene, a paraffin carrier and cellulose acetate tows, and the ethyl butyrate, the myrcene, the p-cymene and the paraffin carrier are mixed and filled in the cellulose acetate tows. The diaphorina citri slow-release attractant provided by the invention has efficient attraction activity on diaphorina citri adults, the preparation method of the slow-release attractant is simple, low in cost, high in operability and suitable for industrial production, the oxidation and decomposition speed of active ingredients in ethyl butyrate, myrcene and cymene can be reduced by dissolving paraffin, and the effect of inducing diaphorina citri adults is achieved. The active ingredients are stably and continuously released for at least 20 weeks, and the composition is suitable for directly trapping and killing or monitoring diaphorina citri in the field.

This invention relates to the field of polymer material synthesis technology, specifically to a modified PVB resin and its preparation method. The invention introduces a fluorinated acetal monoaldehyde derivative containing fluorine into the PVB resin. This derivative is mixed with n-butyraldehyde and glyoxal, thereby undergoing an acetalization reaction with the 1,3-o-diol structure of the PVB molecular chain, incorporating the fluorinated side link into the PVB molecular chain. Utilizing the high electronegativity and high C-F bond energy of fluorine atoms, it shields against the intrusion of external corrosive media, inhibits oxidative yellowing, and improves weather resistance. Furthermore, the invention introduces glyoxal as a crosslinking agent, containing dialdehyde groups, which can react between adjacent polyvinyl alcohol segments, causing slight crosslinking between the originally linear PVB resin segments, improving the resin's shielding performance, further reducing the intrusion of external corrosive media, and enhancing the stability of the PVB resin.

The invention discloses an Al2O3-SiC-MgAl2O4-C castable prepared from waste magnesia carbon materials and a preparation method of the Al2O3-SiC-MgAl2O4-C castable, and belongs to the technical field of unshaped refractory materials, the Al2O3-SiC-MgAl2O4-C castable is prepared from white corundum aggregate, silicon carbide, waste magnesia carbon bricks, spherical asphalt, alpha-Al2O3 fine powder, silicon oxide fine powder, monatomic silicon powder and calcium aluminate cement as raw materials, and a water reducing agent and water are added; the preparation method comprises the following steps: mixing the materials in a stirrer, stirring, pouring and molding, curing at room temperature, demolding, drying for 36-50 hours, carrying out heat treatment at 1550-1650 DEG C in a carbon-buried atmosphere, and keeping the temperature for 3-5 hours to obtain the refractory castable for the iron runner by using the waste magnesia carbon bricks. The prepared refractory castable is excellent in high-temperature performance and high in oxidation resistance, the service life is obviously prolonged, and meanwhile resource recycling is enhanced.

The invention relates to a ceramic-based composite material with an ultrahigh-temperature ceramic coating and a preparation method of the ceramic-based composite material. The method comprises the following steps: annealing the ceramic-based composite material in a vacuum atmosphere, and then bombarding the surface of the annealed ceramic-based composite material by using argon ions to obtain a pretreated ceramic-based composite material; preparing an organic solution containing the yttrium ion doped hafnium-based metal organic framework material; brushing the surface of the pretreated ceramic-based composite material with an organic solution, and annealing in a vacuum atmosphere to obtain a modified ceramic-based composite material; and evaporating silicon and carbon on the surface of the modified ceramic-based composite material by using a physical vapor deposition method, and then annealing by using a Joule heat ultrafast synthesis process to prepare the ceramic-based composite material with the ultrahigh-temperature ceramic coating. The ceramic-based composite material with ultrahigh-temperature ceramic coating protection prepared by the invention has excellent high-temperature resistance, oxidation resistance and reusability, and can be used for preparing thermal structure materials in the field of aerospace.

The application provides a wine aging method, and belongs to the technical field of wine brewing, which comprises the following steps: adjusting the sulfur content of separated base wine to obtain base wine with adjusted sulfur content; sterilizing oak barrels by steam fumigation; filling the base wine with adjusted sulfur content into the sterilized oak barrels to obtain full oak barrels; aging the full oak barrels, the humidity of the aging environment is 65RH%-75RH%, and the temperature of the aging is adjusted according to the season, and the full oak barrels are regularly adjusted in sulfur content during the aging process. The wine aging method provided by the application can regularly adjust the sulfur content of the wine liquid once every 28 days during the aging process, accurately supplement the content of key components in the wine liquid which is reduced due to natural consumption, and avoid the concentration of the components being lower than the appropriate interval of aging.

This invention discloses a method for preparing an edible king oyster mushroom fiber matrix based on polypeptide cross-linking, belonging to the field of food processing technology. The invention uses soybean polypeptides and king oyster mushroom dietary fiber as the main raw materials, and generates a fiber mesh matrix through bio-enzymatic cross-linking. The matrix is ​​further adsorbed with one or more of the high-freezing-point natural plant oils such as cocoa butter, shea butter, and red palm oil, and further shaped after the addition of food additives, thereby preparing an artificial fat with the morphology and taste of natural meat fat layer.

The utility model discloses a kind of self-adapting caliber adjustment oil carbon detector, including oil tank interface pedestal, sliding arc piece set, movable arc piece, positioning member, sensor and electronic information transmission module;More than three groups of sliding arc piece set are evenly distributed in oil tank interface pedestal along the circumference of oil tank interface pedestal, and sliding arc piece set slides along the radial direction of oil tank interface pedestal;Movable arc piece is inserted in the gap between adjacent sliding arc piece set, movable arc piece can slide along the gap between sliding arc piece set, cooperate with sliding arc piece set to realize caliber adjustment, and realize locking positioning by the positioning member located in the inboard of sliding arc piece set;Sensor is located in oil tank, and is electrically connected with the electronic information transmission module outside oil tank interface pedestal by wire.This utility model can adjust caliber, solve the problem that existing fixed caliber oil carbon table is poor in adaptability and high in procurement cost.

The invention discloses a mine waste heat recovery fireproof flame-retardant material, and relates to the technical field of flame-retardant materials. The flame-retardant material comprises an additive, an adhesive, a surfactant, dispersed latex powder, an inhibitor, a dispersing agent and water. The flame-retardant material is prepared by emulsifying, polymerizing, mixing, purifying and concentrating the additive, the adhesive, the surfactant, the dispersed latex powder, the inhibitor, the dispersing agent and the water. The flame-retardant material prepared from the formula components is a highly concentrated solution, the use cost is effectively reduced, the operation is simpler in the use process, the effect is more complete, equipment is protected from being damaged, the flame-retardant material is sprayed on a coal body, a layer of nano-scale protective film is formed on the surface of the coal body, the coal body is prevented from being in contact with oxygen at a microscopic level, and the oxygen content is reduced. Unsaturated functional groups in the molecular structure of the coal are inerted, the oxidation activity of the coal is improved, the critical temperature of the coal in each oxidation stage is increased, the oxidation speed of the coal is fundamentally reduced, and then the purpose of preventing spontaneous combustion of the coal is achieved.

The invention discloses wire drawing equipment for manufacturing a rare earth aluminum alloy cable, and relates to the technical field of wire and cable manufacturing, the wire drawing equipment comprises a wire drawing assembly, a traction assembly and a cable, the traction assembly is used for providing traction force for the cable, and the wire drawing assembly is used for conducting wire drawing processing on the cable; the oxygen discharging mechanism is arranged on the side face of the wire drawing assembly and comprises a preheating bin communicating with the left side of the wire drawing assembly and a nitrogen making machine used for generating nitrogen, a heating coil is fixedly connected to the interior of the preheating bin, a controller is fixedly connected to the lower portion of the left side of the wire drawing assembly, and the heating coil is electrically connected to the controller. The controller is used for controlling the heating coil to heat the cable, a nitrogen input pipe is arranged on the lower surface of the preheating bin, the nitrogen input pipe is fixedly connected with the nitrogen making machine, a second rotating shaft is rotationally connected to the inner wall of the side end of the preheating bin, direct exposure of oxygen and the surface of the cable is reduced, and the oxidation phenomenon in the cable preheating process can be effectively reduced.

The invention discloses a refined cotton drying and feeding automatic control device for intelligent transportation of agricultural products, and relates to the technical field of feeding automatic control. The device comprises a supporting assembly, a gravity sensing assembly is arranged at the top of the supporting assembly, a sensing block is arranged at the center of the top of the gravity sensing assembly, pressing columns are slidably installed at the four corners of the top of the gravity sensing assembly in a penetrating mode, telescopic supporting plates are arranged on the peripheries of the left side and the right side of the supporting assembly, and U-shaped frames are arranged at the tops of the telescopic ends of the telescopic supporting plates; a contact block is arranged in the center of the bottom of the U-shaped frame. Automatic control over the conveying weight of agricultural product refined cotton is achieved, it is guaranteed that the refined cotton is effectively dried, meanwhile, materials are promoted to be evenly and flatly laid in the middle of the surface of the conveying belt through the L-shaped push plate to prevent gravity dispersion, and it is guaranteed that the gravity borne by the conveying belt is vertically downward; and it is avoided that data errors of the gravity sensing assembly are caused by deviation of the contact face of the sensing block and the contact block, the accuracy of automatic feeding is reduced, and intelligent conveying is achieved.

The invention relates to the technical field of preservatives, in particular to a natural compound efficient antibacterial preservative and a preparation process thereof. The preparation process comprises the following steps: preparing a loading liquid; preparing a silk solution; and preparing the natural compound efficient antibacterial preservative. Folic acid, TG enzyme and NHS are compounded and then mixed with carboxymethyl chitosan to prepare a load solution, the TG enzyme is activated through folic acid, so that the TG enzyme and NHS play a combined role, the protein crosslinking efficiency and stability are improved, the load solution can load propolis and silk at the same time, the propolis-silk compound is formed, and the propolis-silk compound is used for preparing the propolis-silk compound. The propolis and the silk are prepared into a composite copolymer through the loading liquid, the silk fiber can be prepared as a framework, the propolis can be kept in the loading liquid in a three-dimensional structure, the propolis has good antibacterial and antiseptic functions, the propolis existing in the three-dimensional structure can make contact with food as much as possible, and therefore the antibacterial and antiseptic capacity is improved; therefore, the shelf life of the food is prolonged.

This application provides a quenched and tempered steel plate and its production method. The quenched and tempered steel plate comprises the following components by mass percentage: C: 0.15–0.20%; Si: 0.20–0.40%; Mn: 1.20–1.50%; Cr: 0.20–0.50%; Ni: 0.10–0.20%; Nb: 0.020–0.040%; Ti: 0.010–0.040%; Mo: 0.30–0.50%; B: 0.0010–0.0025%; P≤0.015%, S≤0.004%; N≤0.004%, Als: 0.010–0.060%, with the remainder being Fe and unavoidable impurities. This application manufactures a thick, high-strength quenched and tempered steel plate with high surface quality by adjusting the elemental composition and content of the quenched and tempered steel plate, specifically by adding certain amounts of Ni, Cr, and B.

The invention discloses environment-friendly authigenic acid as well as a preparation method and a use method thereof, and belongs to the technical field of oilfield chemistry, the environment-friendly authigenic acid comprises an acid generator composition and a prepared liquid aqueous solution, the acid generator composition is prepared from the following raw material components in parts by weight: 30 to 70 parts of deionized water, 20 to 30 parts of ethyl lactate, 10 to 15 parts of methyl lactate, 5 to 10 parts of trimethyl citrate, 5 to 10 parts of N-methylene chitosan phosphate, 2 to 5 parts of chitosan oligosaccharide and 3 to 5 parts of sodium tripolyphosphate. The prepared aqueous solution contains hexadecyl trimethyl ammonium bromide. The acid generator composition and the prepared solution aqueous solution are separated from each other before acidification construction, and are directly pumped into a well after being mixed according to a preset proportion in the acidification construction process. The acid generator composition is stable in performance before being mixed with a prepared aqueous solution, is not easy to oxidize and hydrolyze, can quickly generate acid after being mixed, and has a very good acidification effect after being used on site.

The utility model relates to the field of crystalline silicon battery piece packaging. A packaging device for slowing down oxidation of a crystalline silicon battery piece comprises a press-fitting table 1 capable of vertically moving up and down, a supporting table 2 and a packaging pad, the lower surface of the press-fitting table 1 corresponds to the upper surface of the supporting table 2, and a first rectangular frame protrusion 11 and a second rectangular frame protrusion 12 are arranged on the lower surface of the press-fitting table 1; the center point of the first rectangular frame protrusion 11 and the center point of the second rectangular frame protrusion 12 coincide, the first rectangular frame protrusion 11 is located in the second rectangular frame protrusion 12, and the thickness of the second rectangular frame protrusion 12 in the vertical direction is larger than that of the first rectangular frame protrusion 11. According to the packaging device, the crystalline silicon battery piece can be packaged, the packaging cleanliness is improved in the packaging process, contact between the battery piece and air is reduced, and therefore the probability that the battery piece is oxidized is reduced.

The utility model relates to the technical field of CTP (computer to plate) machines, and discloses a material receiving device of a CTP machine, which comprises an equipment frame and a material receiving trolley, the right side of the top end of the equipment frame is fixedly connected with a working machine, the right end of the bottom wall of the equipment frame is fixedly connected with a material receiving chamber, and the front side and the rear side of the inner bottom wall of the material receiving chamber are respectively provided with a track groove. And tension springs are fixedly mounted at the bottom ends of the inner walls of the two rail grooves correspondingly, limiting grooves are formed in the left sides of the inner bottom walls of the two rail grooves correspondingly, slope columns are fixedly connected to the top ends of the two tension springs correspondingly, and limiting plates are fixedly connected to the middles of the outer walls of the two slope columns correspondingly. According to the utility model, the receiving trolley touches the sensor to send a signal, so that the working machine automatically conveys the printing plate into the receiving trolley, and the telescopic rod jacks the pressure plate upwards to measure the weight of the receiving trolley, so that the labor intensity is reduced, meanwhile, errors and mistakes caused by human factors are reduced through automatic operation, and the working accuracy is improved.

The invention belongs to the technical field of materials, and relates to a transition metal carbide doped material and a preparation method thereof, and the crystal structure of the doped transition metal carbide is amorphous or has a certain long-range disorder degree. The preparation process of the doped transition metal carbide material comprises the following steps: mixing a carbon-containing precursor, a transition metal precursor and a doped metal precursor, roasting at high temperature in a reducing atmosphere, and cooling to room temperature to obtain the doped transition metal carbide nano material. Compared with the prior art, by doping and introducing other doping elements, the long-range order degree of the crystal structure of the transition metal carbide is reduced, the electronic structure of the transition metal carbide is regulated and controlled, then the catalytic activity of the transition metal carbide is improved, and meanwhile the oxidation resistance of the transition metal carbide material is improved; and formation of a transition metal carbide surface oxide layer is slowed down.

This invention belongs to the fields of powder metallurgy and materials science and technology, specifically disclosing a preparation process for a high-wear-resistant WC-based composite material. The process involves preparing WC powder, second-phase powder, and graphene material; adding the graphene material to a dispersion medium and performing ultrasonic dispersion; mixing the graphene dispersion with the WC powder and second-phase powder and ball milling; drying the mixture using a vacuum rotary evaporation drying process; and densifying it using a hot-pressing sintering process. This invention enables the WC-based composite material to simultaneously achieve high hardness and high fracture toughness; effectively inhibits oxidative wear of the WC-based composite material at high temperatures, improving its high-temperature wear resistance; and achieves uniform and stable dispersion of the graphene reinforcing phase in the WC matrix, avoiding agglomeration, thereby fully utilizing its strengthening and lubrication effects. The composite material prepared by this invention is particularly suitable for use as high-speed cutting tools, high-temperature molds, and high-temperature moving parts in aerospace applications, and has broad application prospects.

The utility model provides a bearing jig for coating a film on a to-be-coated part. The utility model discloses a bearing jig for coating a film on a to-be-coated part, which comprises a base plate; the opening is formed in the substrate and is matched with the shape of the part to be coated; the blocking edge is formed in the circumferential direction of the opening and extends in the center direction of the opening; and the flange is matched with the opening to bear the to-be-coated part and shield the edge area of the to-be-coated part. According to the bearing jig disclosed by the invention, the retaining edge is arranged, so that the P1 groove area can be shielded when the part to be coated is specifically coated, and the P1 groove is formed while the first film layer is formed. Therefore, the working procedure that a P1 groove needs to be formed in the formed first film layer through laser in the current film coating process is omitted, and the film coating efficiency is improved. According to the bearing jig, the guide angles are arranged at the corners of the flanges, so that the phenomenon that a film layer is not uniform when the part to be coated is coated can be prevented.

The invention relates to a car lamp adjusting structure and a car lamp, and belongs to the technical field of car lamps, the car lamp adjusting structure comprises a lamp shell, a light guide cover and a lamp body, and further comprises a rotating mechanism; and a condensation mechanism. Through cooperative use of the adjusting mechanism, the rotating mechanism and the light condensation mechanism, when light emitted by the lamp body needs to be subjected to light condensation operation when the front road condition cannot be seen clearly and whether pits exist or not and dangerous conditions exist, the adjusting mechanism is started to enable the lamp body to move into the light guide cover, and at the moment, the lamp body extrudes the rotating mechanism; liquid in the rotating mechanism enters the light gathering mechanism, then a light gathering cover of the light gathering mechanism extends out of the lamp body, light emitted by the lamp body is subjected to light gathering operation, light overflowing is reduced, the light can be better gathered into one piece, a driver can more clearly observe the front road condition, the driver can conveniently make a response in time, and the driving safety is improved. And the irradiation quality of lamplight is ensured, so that the driving safety is ensured.

The present invention belongs to the technical field of secondary battery materials. More specifically, it relates to a high-voltage fast-charging lithium-ion battery and electrolyte. The products provided by the present invention include a base solvent, a lithium salt, a functional additive, a polymer electrolyte, and a nano-inorganic filler; wherein the base solvent is dispersed in the polymer electrolyte to form a gel polymer electrolyte; the lithium salt, the functional additive, and the nano-inorganic filler are dispersed in the gel polymer electrolyte; the polymer electrolyte is selected from polyethylene oxide; the nano-inorganic filler is compounded by boehmite and alumina in a mass ratio of 8:1-10:1. The base solvent is prepared from the following raw materials in parts by weight: 50-60 parts of ethylene carbonate, 10-15 parts of fluorinated ethylene carbonate, 8-10 parts of acrylonitrile, and 3-5 parts of methyl ethylene oxide; the functional additives include film-forming protection additive vinyl sulfate, overcharge protection additive DTD, and flame retardant additive trimethyl phosphate.

The invention discloses an automatic pig feed feeding and discharging device, and relates to the technical field of feed feeding, the automatic pig feed feeding and discharging device comprises a quantitative feeding assembly, the quantitative feeding assembly comprises a feeding trough frame and four supporting legs, the four supporting legs are fixedly connected to the bottom surface of the feeding trough frame, the bottom of the outer side wall of the feeding trough frame is fixedly connected with a supporting rod, the top end of the supporting rod extends to the top of the feeding trough frame, and the top end of the supporting rod is fixedly connected with the feeding trough frame. A bin is fixedly connected to the top end of the supporting rod, a material cover is clamped to the top end of the bin, a partition plate is fixedly connected to the inner wall of the bin, and a plurality of discharging pipes are arranged at the bottom end of the bin; the weight of the feed at the top of the carrier plate is set, compared with an existing mode that the falling time of the feed is controlled only through an electromagnetic valve, the feeding method is not affected by changes of physical properties of the feed, it can be ensured that the accurate amount of feed can be obtained every time pigs are fed, accurate nutrition supply is facilitated, and the feeding efficiency is improved. The requirements of different growth stages and health conditions of the pigs are met.

The utility model discloses a metalized capacitor film with improved oxidation resistance, which comprises a film base layer and a metal coating arranged on the film base layer, blank areas are symmetrically arranged on two side edges of the surface, close to the metal coating, of the film base layer, heat dissipation layers are arranged on the blank areas, and the heat dissipation layers are tightly attached to the side edges of the metal coating. A reinforcing layer is evaporated on the side, away from the metal coating, of the thin film base layer, an anti-oxidation layer is evaporated on the side, away from the thin film base layer, of the metal coating, the thickness of the reinforcing layer and the thickness of the anti-oxidation layer gradually change from the middle to the two sides in an arc mode, and the reinforcing layer and the anti-oxidation layer are parallel to each other. According to the utility model, the anti-oxidation layer covers the surface of the metal coating, so that the oxidation rate of the metal coating can be effectively reduced; the heat dissipation layer is arranged to accelerate the outward heat dissipation of the metal coating, so that the possibility of heating and even breakdown of the capacitor is effectively reduced; by arranging the reinforcing layer, the tensile strength of the whole film can be effectively improved, and then the possibility that the film cracks is reduced.

This invention provides a tidal flow constructed wetland for treating rural domestic sewage, comprising a concrete impermeable layer disposed at the bottom and around the perimeter of the pool. Within the concrete impermeable layer, from bottom to top, are a uniformly distributed water pipe layer, a first filler layer, a second filler layer, a third filler layer, and a covering layer. One end of the uniformly distributed water pipe layer has an inlet pipe, and the bottom of the third filler layer has an outlet pipe. An aeration pipe is also located within the third filler layer. Wetland plants, preferably local dominant wetland plant species, are planted on the covering layer. The first filler layer is a mixture of slow-release carbon source and alkali source, the second filler layer is a mixture of sulfur and iron, the third filler layer is a filter adsorption filler, and the covering layer is gravel filler. This invention offers advantages in treating rural domestic sewage, including good purification effect, simultaneous nitrogen and phosphorus removal, siphon self-control, low infrastructure and operating costs, and convenient maintenance.

The utility model relates to the technical field of plastic molds, in particular to a quick connector mold for producing a vehicle-mounted charging plastic shell. The plastic mold comprises a first plastic mold body, a second plastic mold body, four guide columns, four guide grooves and two mold grooves, the guide columns are connected with the inner walls of the guide grooves in a sliding mode, lubricating devices are arranged on the two sides of the first plastic mold body, and each lubricating device comprises two supporting plates. And the two supporting plates are fixedly connected with the two sides of a first plastic mold correspondingly, a storage box is fixedly connected to the surfaces of the supporting plates, two hollow pipes are connected into the storage box in a communicating mode, and sponge rings are fixedly connected to the arc surfaces of the guide columns. The problems that the production efficiency is affected, abrasion is aggravated and the precision of the mold is affected due to the fact that the mold opening and closing actions and the like of the mold cannot be smoothly carried out due to clamping stagnation caused by overlarge friction force when the mold is used for a long time and the relative movement of the guide column and the guide groove are solved.