65results about How to "Avoid softening" patented technology

The friction stir welding device based on battery shell manufacturing comprises a welding table, a positioning mechanism, a welding mechanism and a cooling mechanism, the welding table is provided with a material containing plane used for containing a plate, the positioning mechanism fixes the plate, the welding mechanism comprises a rotating part and a stirring part, the rotating part is controlled to move and drives the stirring part to conduct welding, and the cooling mechanism is used for cooling the stirring part. The cooling mechanism comprises a shell, a liquid source and a fan, a containing space is formed in the shell and connected with the liquid inlet, the air inlet and the air outlet, the opening covers the weld joint and is attached to the surface of the plate, a plurality of partition pieces are arranged in the containing space to form a first heat dissipation flow channel, and cooling liquid and airflow are guided to flow in order. According to the friction stir welding device, cooling liquid is supplied through the liquid source, airflow is provided through the fan, local cooling gradient control over the welding seam area and the periphery is achieved, the problems of stress concentration, cracks and strength reduction caused by the too large temperature gradient are solved, meanwhile, the joint hardness recovery effect is improved, and the welding quality is optimized.

The invention relates to 780 MPa grade wheel steel and a manufacturing method thereof. The technological process comprises the steps of KR molten iron desulphurization, converter smelting, argon blowing, LF refining, RH vacuum treatment, continuous casting blank forming, plate blank heating, rolling, cooling and coiling. According to the method, the economical titanium alloy is adopted, precipitation strengthening of Ti is not used for improving the strength of base metal, and solution strengthening and structure strengthening are used for enabling the strength performance of the material to meet the requirement; meanwhile, the process that the front section is rapidly cooled to the medium-low temperature to be coiled is adopted, precipitation of Ti is inhibited, precipitation of TiC is inhibited, growth of columnar crystals is inhibited, the Ti element in the steel in a solid solution mode can be reserved, most of Ti in the material is inhibited by the high cooling speed and the low cooling stopping temperature, and the Ti is still in a solid solution mode and not precipitated in base metal; the Ti element is re-precipitated in the welding stage to the user side, and the strength and hardness of the welding heat affected zone and the welding seam are improved by re-precipitation strengthening of the Ti element in the process, so that the softening phenomenon of the welding heat affected zone and the welding seam can be avoided.

The invention discloses a biodegradable composite polylactic acid packaging bag and a preparation method thereof, belongs to the technical field of biodegradable materials, and aims to solve the technical problem that the mechanical property, heat resistance and biodegradation rate of a polylactic acid material in the prior art need to be further improved. The material comprises the following components in parts by weight: 90-100 parts of modified polylactic acid, 10-15 parts of modified starch, 15-20 parts of modified nanofiber, 4-8 parts of pigment and 5-7 parts of additive, and is prepared by taking the modified polylactic acid as a basic raw material, the modified starch and the modified nanofiber as reinforcing materials and the pigment and the additive as auxiliary additives. The mechanical strength and high temperature resistance of the packaging bag are effectively improved, and the biodegradability of the packaging bag is improved, so that the packaging bag better meets the requirements of express and logistics industries on biodegradable packaging materials.

The utility model discloses an air switch rack with an external protection structure, which comprises an air switch rack upper body, and the bottom of the air switch rack upper body is fixedly connected with an air switch rack lower body clamping plate. According to the utility model, the aerogel felt heat insulation frame in the air switch support upper body and the heat insulation structure layer on the inner side of the air switch support lower body clamping plate can prevent the air switch support upper body and the air switch support lower body clamping plate from being softened due to heat of electric power when an internal air switch is used; the outer side of the air switch support lower body clamping plate is reinforced by the metal reinforcing sheet, so that the air switch support lower body clamping plate is not easy to bend and break in use; and finally, a polyurethane layer and a rubber anti-impact layer in the protection structure layer can prevent the air switch support lower body clamping plate from being bent and then broken due to the fact that external impact force exerts pressure on the air switch support lower body clamping plate, so that the air switch support lower body clamping plate has the advantage of being good in high-temperature-resistant and anti-bending effect, and the high-temperature-resistant and anti-bending effect in the use process of the air switch support is improved.

The invention provides a differential friction stir welding method for an aluminum-based material part, and relates to the technical field of friction stir welding of aluminum-based materials. According to the main technical scheme, a set differential friction stir welding tool is adopted, and differential friction stir welding is conducted on an aluminum-based material part to be welded; the differential friction stir welding tool comprises a stirring needle assembly and a shaft shoulder assembly. The stirring needle assembly comprises a stirring needle and a stirring needle connecting handle; the stirring needle is made of tungsten carbide-cobalt alloy; the shaft shoulder assembly comprises a shaft shoulder and a shaft shoulder connecting handle; the shaft shoulder is made of tungsten carbide-cobalt alloy; in the tungsten carbide-cobalt alloy, the content of cobalt is 12-25 wt%. According to the method, the set differential stirring welding tool is utilized, weld nugget reinforced phase particles can be broken, the higher strengthening effect is achieved, coarse grain weld nugget grains are refined, and therefore low-heat-input differential stirring friction welding of the aluminum-based material thick plate can be achieved, coarsening of a weld joint structure is restrained, and the welding quality of the aluminum-based material thick plate is improved. And the mechanical property of the large-thickness structural part joint is obviously improved.

The invention provides a construction method of a prefabricated assembled roadbed structure of a new and old expressway, which comprises the following steps: S1, carrying out stepped excavation on an old roadbed splicing area, and connecting a plurality of first splicing units with an old roadbed through a longitudinal insertion structure; s2, the first splicing units and the second splicing units are connected through first bolt connecting sets, and the second splicing units are connected through transverse inserting structures; s3, the adjacent first splicing units and the connected second splicing units are connected through second bolt connecting sets; s4, the first splicing unit and the second splicing unit are each connected with a leveling assembly used for adjusting the elevation and levelness of the first splicing unit and the second splicing unit; s5, sealing pieces are arranged between the first splicing units, between the first splicing units and the second splicing units and between the second splicing units; and S6, cast-in-place structures are arranged at the joints of all the splicing structures, the site cast-in-place workload is reduced, and rapid splicing of the new roadbed and the old roadbed is achieved.

This invention belongs to the field of foundation pit support technology, specifically relating to an adjustable foundation pit engineering support structure. It includes support units, each comprising a support base plate and a support frame plate. The support base plate rests against the foundation pit wall, and the support frame plate is connected to the support base plate via an adjustable support. A cross bracing device supports the support frame plates of two support units in opposite directions, and the two support units are mutually supported by the cross bracing device, with the adjustable support buffering the deformation pressure of the foundation pit wall. Support units in the same direction are spliced ​​together. This invention provides an adjustable foundation pit engineering support structure, employing an adjustable support structure that forms a recoverable elastic support system between the support base plate and the support frame plate. After pressure is unloaded, it can return to its original shape, improving the durability and reusability of the support structure.

The invention discloses a new energy automobile charging pile with a fire extinguishing device, and relates to the technical field of charging piles. The device comprises a base, the top of the base is provided with a charging main body, the left and right sides of the charging main body are provided with ventilation openings, the outer wall of the base is provided with a protective shell, and the top of the protective shell is designed to be a slope; the bottom of the inner wall of the charging main body is provided with a power supply main body; an anti-damage device is arranged on the upper portion in the charging body, an anti-softening device is arranged on the back of the anti-damage device, and an anti-erosion device is arranged at the bottom of the anti-softening device. The detection range of the detection assembly is effectively expanded, so that the accuracy of the detection result is improved, fire hazards in the charging main body are eliminated through carbon dioxide gas, economic losses caused by fire damage of the charging main body due to overload short circuit at high temperature are avoided, and the fire protection function of the charging main body is improved.

The utility model discloses an anti-pulling wine bottle cap which comprises an inner sleeve and a metal ring, at least one groove hole is formed in the side wall of the inner sleeve and penetrates through the inner wall and the outer wall of the inner sleeve, the inner sleeve comprises at least one clamping plate, the clamping plate is located on the lower edge of the groove hole and extends upwards, the upper end of the clamping plate inclines towards the direction of the center axis of the inner sleeve, and the metal ring is fixedly installed in the inner sleeve. When the inner sleeve is subjected to injection molding, the metal ring and the inner sleeve are subjected to injection molding, the clamping plate of the inner sleeve has the elastic deformation capacity and can clamp a bottle lip connected with a bottle cap, and the clamping petal of the metal ring in the clamping plate can prevent the situation that the clamping plate is softened in a high-temperature environment and the bottle cap cannot be pulled out.

The utility model discloses a kind of high-temperature-resistant sponges, including sponge body and boss;The top of the sponge body is provided with boss, one side of the sponge body is fixed with clamping groove, the other side of the sponge body is fixed with clamping block, sponge body includes aluminium oxide, metal net and silicon dioxide.The utility model is provided with metal net, the middle position of sponge body is provided with metal net, metal net can improve the mechanical strength and high-temperature-resistant performance of sponge, reduce the possibility of deformation, and the inside sea of sponge body is respectively provided with aluminium oxide and silicon dioxide, aluminium oxide and silicon dioxide can all promote the heat resistance of sponge body, while silicon dioxide can also strengthen the hardness and wear resistance of sponge, and aluminium oxide can improve the toughness of sponge, so that the high-temperature-resistant performance of sponge is strengthened, avoid its soft under high-temperature state, or temperature difference leads to crack or fracture, prolong the service life of sponge.

The utility model relates to the technical field of carrier plate glass production, and discloses a cleaning device. The cleaning device comprises a cleaning part, the cleaning part comprises a rod part and a cleaning part, the cleaning part is connected to the first end, in the length direction, of the rod part, and the cleaning part is used for cleaning adhesive materials accumulated at a furnace opening of the melting furnace; a flow channel extending in the length direction of the rod part is arranged in the rod part, and the flow channel is configured to allow cooling liquid to circularly flow so as to cool the cleaning part, so that the cleaning part is prevented from being softened due to high temperature, adhesion objects are prevented from being adhered to the cleaning part, the adhesion problem of the cleaning part is effectively solved, and the service life of the cleaning part is prolonged. Therefore, the adhesive materials accumulated at the material port can be quickly and effectively cleaned, and the cleaning efficiency is improved.

The application discloses a high-silica glass fiber heat insulation cotton for automobiles and a preparation method thereof, and relates to the technical field of sound and heat insulation. The high-silica glass fiber is used as raw material, and the high-silica glass fiber has higher high-temperature resistance and high-temperature stability than conventional glass fibers, can maintain high mechanical strength for a long time, and avoids softening under high temperature. The phenolic resin is modified, a boron-silicon modified polyphenol monomer containing phenolic hydroxyl groups and boron and silicon elements is prepared, and participates in the condensation reaction of the phenolic resin, so that the phenolic resin has higher high-temperature resistance and flame retardance, and the glass fiber heat insulation cotton has higher safety performance.

This invention relates to the field of high-performance steel heat treatment equipment technology, and discloses a heat treatment method for eliminating anisotropy in stamped parts, comprising five stages: pretreatment, gradient temperature-controlled annealing, magnetic field-assisted regulation, integrated cooling, and post-treatment. This invention innovatively employs thickness-layered gradient temperature control, pulsed magnetic field-assisted grain boundary regulation, a micron-level high-precision temperature control system, and integrated closed-loop control of annealing and cooling to achieve precise control of the microstructure: the average grain size of the steel is ≤2μm, grain uniformity is ≥92%, tensile strength is ≥1200MPa / 950MPa, elongation is ≥25%, and the strength-ductility matching coefficient is improved by more than 40% compared to traditional processes; process repeatability error is ≤3%, microstructure recovery and softening rate is ≤5%, and residual stress elimination rate is ≥95%; achieving synergistic optimization of strength and ductility, it can be widely applied in high-end equipment manufacturing fields such as aerospace, nuclear fusion devices, and extreme cold environment engineering.

The invention provides a display panel, a preparation method thereof and electronic equipment, the display panel comprises a binding assembly, a display assembly, a plurality of second electrodes and a laminated structure, the binding assembly comprises a plurality of first electrodes which are sequentially arranged at intervals, the display assembly comprises a plurality of second electrodes which are sequentially arranged at intervals, and the laminated structure comprises a base layer, a supporting glue layer and a supporting film layer which are sequentially laminated. The second electrode is arranged on the surface of the base layer deviating from the supporting adhesive layer; the conductive adhesive layer is located in a press fit area between the binding assembly and the display assembly, the press fit area comprises a first area and a second area, projection planes of the first electrode and the second electrode on the conductive adhesive layer are located in the first area and the second area, and the third area is located between the first area and the second area; the display panel further comprises an anti-arching structure, and at least part of the projection plane of the anti-arching structure on the conductive adhesive layer is located in the third area. The anti-arching structure effectively prevents the problem that the supporting adhesive layer is softened and deformed during hot pressing to cause arching of the base layer.

The invention relates to the technical field of polypropylene, and discloses a plastic product based on polypropylene and a production method thereof. The plastic product comprises the following raw materials: polypropylene, a flame retardant synergist, a high temperature resistant component, a filler, a lubricant, a dispersant, and an antioxidant; wherein the flame retardant synergist is prepared by introducing a nitrogen-phosphorus flame retardant on the surface of boehmite, and can form an inorganic-organic composite flame retardant in a matrix, thereby effectively improving the flame retardant performance of the plastic product; and the high temperature resistant component is obtained by chemically connecting bicyclo[2.2.2]octane-1,4-dicarboxylic acid to the structure of methyl vinyl silicone rubber, and utilizing a large number of silicon oxygen bonds and rigid ring structures in the structure, thereby giving the plastic product excellent high temperature resistance, extending the service life of the plastic product, and being able to meet the use requirements of the plastic product in various environments.

The utility model discloses an engine connecting rod convenient to disassemble and assemble, which belongs to the technical field of engine connecting rods and comprises a rod body and a connecting rod big end, the connecting rod big end is fixedly mounted at one end of the rod body, connecting rod covers are symmetrically mounted on two sides of the connecting rod big end, fixing cylinders are slidably mounted in the connecting rod covers, and fixing rods are fixedly mounted in the fixing cylinders. One end of the fixing rod is connected with a handle, telescopic sleeves are symmetrically arranged at the other end of the fixing rod, springs are arranged in the telescopic sleeves, and the other ends of the springs are connected with guide columns. According to the engine connecting rod convenient to disassemble and assemble, the disassembling time can be shortened, by rotating the handle, the fixing rod in the fixing barrel can stretch the spring and the telescopic sleeve to stretch out and draw back together, a positioning pin on the connecting rod cover is pulled out, rapid disassembling is achieved, and during assembling, the handle is rotated, the spring is stretched and aligned with a groove to be inserted, the spring pushes the telescopic sleeve to stretch out, and assembling is completed. The positioning pin is inserted, locking is achieved, and the rod body can be prevented from loosening under high-frequency vibration through locking combination of the spring and the positioning pin.

The invention belongs to the field of lithium-sulfur secondary batteries, and relates to a high-performance lithium-sulfur battery, the high-performance lithium-sulfur battery comprises a sulfur-carbon positive electrode, a lithium negative electrode, an electrolyte and a diaphragm, the diaphragm comprises a base membrane and a functional coating coated on one or two surfaces of the base membrane, and the functional coating comprises molybdenum disulfide particles coated with metal molybdenum nanoparticles. The application of molybdenum disulfide particles coated with metal molybdenum nanoparticles to the functional layer of the lithium-sulfur battery diaphragm is proposed for the first time, so that the shuttle effect of polysulfide can be effectively inhibited, the redox reaction of the polysulfide can be accelerated, the polysulfide is promoted to be quickly converted into solid Li2S, the utilization rate of sulfur is increased, the accumulation of intermediate products is reduced, and the service life of the lithium-sulfur battery diaphragm is prolonged. The coulombic efficiency and the cycling stability of the battery are improved; and the two are combined to form an efficient conductive network, so that the conductivity is remarkably improved, rapid transmission of electrons in the conductive network is promoted, and the rate capability of the battery is improved.

The application discloses a cold work-hardened stainless steel welding structure equal-strength welding method. The main welding seam joint of the strengthened stainless steel welding structure is designed in a butt joint form, and a reinforcing backing plate is arranged below or above the main welding seam. When the backing plate is arranged below the main welding seam, the butt joint interface of the main welding seam and the overlapping interface of the main welding seam and the reinforcing backing plate are completely welded through one-time welding, and the reinforcing backing plate can not be penetrated. When the backing plate is arranged above the main welding seam, the main welding seam should be welded first, and then the backing plate is arranged above the main welding seam for reinforcing welding. The backing plate-structure main body is connected through a line welding seam or a welding point in a perpendicular manner to the main welding seam, so that when the main welding seam is subjected to an acting force, the stress is transmitted to the reinforcing plate through the overlapping joint, and part of the stress is shared by the reinforcing plate, thereby improving the stress bearing capacity of the overall structure. The reinforcing effect is provided by the overlapping welding seam of the reinforcing backing plate and the main welding seam and the horizontal overlapping welding seam of the reinforcing backing plate and the main body, and the overall structure strength after the reinforcing reaches the equal strength of the structure in the strengthened state of the base material.

The application belongs to the technical field of adhesives, and relates to a temporary bonding support material and a preparation method and application thereof. The temporary bonding support material is obtained by polymerization of a cyclic olefin monomer or polymerization of a cyclic olefin monomer and an olefin monomer. The cyclic olefin monomer has a structure shown in formula I, and the olefin monomer has a structure shown in formula II. The obtained cyclic olefin polymer obtained by polymerization of the specific monomers is selected as the main component of the temporary bonding support material. The rigid cyclic structure contained in the main chain of the cyclic olefin polymer can effectively limit the chain segment movement. The saturated carbon hydrogen main chain contained in the cyclic olefin polymer has a hydrophobic nature and a dense amorphous structure which can block the penetration of water molecules. The obtained temporary bonding support material has the characteristics of high modulus and high glass transition temperature at high temperature, and also has excellent water vapor resistance.

The invention relates to the technical field of medial strips, and discloses a water diversion structure used for a road medial strip and capable of being rapidly constructed, the water diversion structure comprises a plurality of splicing units, and the splicing units are in butt joint in sequence to form a covering structure; each assembly unit comprises two water baffles, the inner ends of the water baffles form butt joint ends, the outer ends of the water baffles form fixed ends, hollow areas are formed in the middle portions of the water baffles, and the fixed ends are fixedly arranged. The water baffle is provided with a water guide face, and a water guide channel is arranged on the water guide face. A plurality of splicing units are in butt joint in sequence to form a covering structure covering the medial strip, and the advantage of rapid construction is achieved; rainwater falls on the water baffle, flows along the water guide surface and is drained to the road surface by the water guide channel, so that excessive rainwater is prevented from permeating into the roadbed, the roadbed is prevented from being softened and the like, and the service life of the road is prolonged.

The application discloses a manufacturing method of a high-heat-dissipation-efficiency pouring type driving transformer, and belongs to the technical field of power electronic equipment manufacturing. The method aims to solve the technical problems of low heat dissipation efficiency and insufficient long-term reliability of the existing driving transformer caused by the limited heat conduction performance of the pouring material, the simple surface heat dissipation structure and the difficult coordination of internal thermal stress. The method comprises the following steps: constructing a three-dimensional digital model of a reinforced heat dissipation structure with a boss array and a groove array and preparing a corresponding forming die; positioning a magnetic core and a winding as an insert in a die cavity; pouring insulating colloid with different mechanical and heat conduction properties in batches in a vacuum environment; through a segmented curing process, the flexible colloid is fully filled in the internal gap and buffers the stress, and at the same time, the high-heat-conduction rigid colloid forms an external main body and a heat dissipation structure, thereby forming an integrated pouring body. The method is used for manufacturing the driving transformer suitable for high-power-density and high-heat-dissipation scenes, and can significantly improve the heat dissipation capacity and operation reliability of the driving transformer.

This utility model discloses a novel high-speed gear structure with radial lubrication holes, relating to the field of gear technology. It includes: a gear; multiple radially stepped oil holes opened radially along the gear; and an annular groove disposed between the lubrication holes and the delivery channel to connect the two. By setting the radially stepped oil holes, precise lubrication and reduced wear are achieved: the radially stepped oil holes directly spray lubricating oil onto the gear meshing surface, ensuring the tooth surface is always under oil film protection, reducing the coefficient of friction and wear; efficient heat dissipation and reduced temperature rise: the lubricating oil quickly carries away frictional heat through the oil holes, avoiding material softening or adhesion failure caused by localized high temperatures; lightweight structure: compared to traditional splash lubrication or complex external nozzles, integrated radial oil holes reduce additional lubrication components, making the gearbox more compact; and extended service life: uniform lubrication avoids failure modes such as pitting and spalling, significantly improving gear fatigue life.

The invention discloses a copper-tungsten alloy-copper-steel composite electrical contact and a preparation method thereof, and relates to the technical field of alloy material preparation. Comprising the following steps: performing compression molding on tungsten powder to obtain a blank block; pre-sintering the briquette to prepare a framework, so as to obtain a tungsten framework; the theoretical copper infiltration weight is calculated according to the weight of the tungsten framework, copper infiltration is conducted on the tungsten framework according to 1.2-1.4 times of the theoretical copper infiltration weight, and the copper-tungsten alloy is obtained; the method comprises the following steps: respectively machining and cleaning a copper-tungsten alloy, a steel part and a copper part, then assembling, placing a chromium-copper alloy on the top of the assembled copper part, vacuumizing, sintering at 1250-1300 DEG C, and cooling to obtain a blank; and carrying out heat treatment on the blank to obtain the copper-tungsten alloy-copper-steel composite electrical contact. According to the method, the copper-tungsten alloy, the copper and the steel are combined, the bonding strength between matrixes is improved, the consistency and the stability of the quality of a welded product are guaranteed, and the air hole defect of a bonding surface is reduced.

The present invention addresses the problem of obtaining a powdery chocolate composition which, when added to chocolate, exhibits excellent dispersibility, suppresses chocolate softening, and improves chocolate flavor physical properties, and which exhibits excellent dispersibility as a chocolate powder beverage and excellent flavor as a chocolate beverage. Provided is a method for producing a powdered chocolate composition that satisfies the technical problem by dispersing raw materials satisfying the conditions (A)-(D) in water to obtain an oil-in-water emulsion having an average emulsion particle diameter of 1.5-10 [mu] m (inclusive), and drying the oil-in-water emulsion. (A) The grease is contained in an amount of 110% by mass or less relative to the fat-free cocoa solid content. (B) A cocoa-derived raw material is contained in an amount of 30% by mass or more relative to the solid content of the composition. (C) The composition contains 15 mass% or more of an oil or fat relative to the solid content of the composition. And (D) a raw material derived from milk in an amount of 0.5% by mass or less relative to the solid content of the composition.

The present invention discloses a method for making an extruded tile with integrated eaves. The production line used in the method includes a raw material mixer, an extruder, a tile forming machine, a cutting machine, a heating device and an eaves forming device. The outlet of the raw material mixer is connected to the inlet of the extruder. A die head is provided at the outlet of the extruder, and the die head is connected to the inlet of the tile forming machine. The die head at the outlet of the extruder extrude flat sheet-like raw materials to the tile forming machine for pressing and forming. The extrusion speed of the extruder is synchronized with the running speed of the tile forming machine. The automatic cutting machine is arranged at the outlet of the tile forming machine, and the running speed of the automatic cutting machine is kept synchronized with that of the tile forming machine. The operation steps of the method include raw material mixing, heating extrusion, tile forming, automatic cutting, tile heating and eaves forming. The integrated tile with eaves made by the present invention can solve the problems of unsightly installation of traditional tiles and eaves, difficulty in installation and gaps between tiles and eaves.

The invention relates to the technical field of aluminum alloy section processing, and discloses a processing method of an aluminum alloy section amphibious vehicle skateboard, which comprises the following steps of: dividing the whole skateboard into two sub-assemblies by adopting an extrusion forming process, designing a splicing structure at the splicing position of the two sub-assemblies, and respectively extruding and forming the two sub-assemblies to obtain a finished product of the amphibious vehicle skateboard. The two sub-assemblies are welded together based on a splicing structure at the splicing position, the splicing structure comprises a groove part, a welding seam part, a base plate part and a ventilation hole channel part, the ventilation hole channel part is arranged below the welding seam part and located on the base plate part, and the base plate part extends from one of the two sub-assemblies; according to the sliding plate machined through the method, thermal deformation during welding is avoided, the cambered surface precision is higher, one-face welding and two-face forming are achieved in the welding link, the machining process is simple, and cost is low.

The utility model relates to cooling device technical field especially relates to a cooling device for pig feed antibacterial granule production, including base, the base installs drive mechanism on, drive mechanism drive connection has the air duct that guides, the air duct's axial both ends are equipped with the opening that penetrates, the both ends of air duct rotatory connection have first casing and second casing respectively. The utility model discloses through setting up by drive mechanism drive rotating air duct, and setting up axial fan in the axial both ends of air duct, for forming the cold air flow that flows fast in the air duct, cooperation inside spiral plate makes feed granule in the while along the axial delivery of turning over to contact with cold air flow fully, improves the cooling efficiency and cooling uniformity of feed granule, sets up filter hole in the air duct simultaneously, sets up cover and recovery subassembly outside the filter hole of air duct for separating out condensate in time, avoids the feed granule in the air duct in the process of turning over and overabsorption condensate and leads to softening.

The application discloses a kind of turnover assembly type slope temporary support device and use method, device includes the slope top unit, slope surface unit and slope foot unit sequentially spliced along the longitudinal direction of slope, form continuous assembly type support surface.Slope top unit integrates penetration type water stop, slope top plate, hoop, plate seat, railing and fender, realize slope top water interception and edge protection synchronous completion;Slope surface unit uses L-shaped staggered occlusal connection's slope on plate and slope middle plate, and is provided with drain with filter screen;Slope foot unit includes slope foot plate and standardization drainage ditch occlusal connection with slope middle plate.The application uses the construction method of first support and then dig, layered assembly, full assembly profile installation is formed, without maintenance;Integrated full-process closed-loop drainage system, solve the problem of slope instability caused by drainage lag;All components can be detached and reused, meet the requirements of green construction.The application is especially suitable for temporary support of small prismatic base pit such as pipe trench, elevator shaft, sump.

The invention belongs to the technical field of pavement maintenance, and particularly discloses a road base maintenance device and method, and the maintenance device comprises a spraying unit and a control unit; the spraying unit is arranged on the surface of a road base and is arranged along the axis of a road; the control unit is respectively connected with the spraying unit and the road base; the spraying units are arranged along the axis of the road and arranged on the surface of the road base layer to directly spray water to the base layer, so that water can permeate into the base layer more directly and more uniformly, additional mechanical intervention is not needed, and physical interference and damage risks to the base layer are reduced; meanwhile, the control unit is connected with the spraying unit and the road base, so that the control unit can automatically adjust the spraying strength and frequency according to the moisture content in the road base, it is ensured that the road base can be properly maintained under different environmental conditions, the maintenance efficiency is effectively improved, and the labor intensity is reduced.

The invention relates to the technical field of pet food processing, and particularly provides a protein-lipid compound oil gel coating composition which comprises the following components in parts by weight: 60-70 parts of egg yolk oil; 10 to 20 parts of eggshell membrane peptide; 5-10 parts of medium-chain fatty acid; 0.1 to 0.5 part of vitamin E; 10 to 15 parts of ethyl cellulose; and 2-5 parts of nano silicon dioxide. Egg oil is used as a substrate, an oil gel three-dimensional network is constructed, eggshell membrane protein is integrated into lipid, and precise function delivery of joint and fur health is achieved. The solid coating is stable in structure and high in oxidation resistance, can be firmly attached to the surface of the pet food, effectively prevents grease oxidation and leakage, and remarkably prolongs the shelf life and improves the additional value of the product.