37results about How to "Improve spreading uniformity" patented technology

The invention discloses an environment-friendly release agent for fair-faced concrete and a preparation method thereof. The release agent is prepared from the following raw materials in percentage byweight: 35-45% of palm oil, 5-10% of an emulsifier, 0.2% of an antirust agent, 0.1% of a stabilizer, 0-8% of nano titanium dioxide and the balance of water. The preparation method of the release agentcomprises the following steps: 1) respectively mixing and uniformly stirring the emulsifier, the water and the palm oil to obtain two mixed solutions according to the emulsifying property of the emulsifier; and 2) uniformly mixing the two mixed solutions prepared in the step 1), sequentially adding an antirust agent, a stabilizer and nano titanium dioxide, stirring for 40-50 minutes at the temperature of 10-60 DEG C, and cooling to obtain the release agent. The release agent has the properties of low viscosity, good spreading uniformity, isolation lubrication and the like and can effectivelyeliminate bubbles on the surface of fair-faced concrete and stably and effectively ensure the appearance quality of the fair-faced concrete, and the fair-faced concrete after release has the advantages of good apparent quality, smooth appearance, small apparent pore size, small quantity, uniform color and small color difference.

A vehicular spreader of a solid road binder comprises a storage bin, a material conveying mechanism, a material distributing mechanism, a spreading mechanism and a dust removal device, wherein the storage bin is of a square sealed box structure, openable and closable charging holes are formed in the top of the storage bin, the material conveying mechanism is in seal connection with the low part of the storage bin, and is corresponding to a discharge hole in the lower part of rear end of the storage bin; the rear end of the storage bin is in seal connection with the dust removal device additionally; the lower end of the dust removal device is in seal connection with the material distributing mechanism, the position of the material distributing mechanism directly faces an output end of the material conveying mechanism, and the spreading mechanism is in seal connection with the lower end of the material distributing mechanism; the vehicular spreader has the characteristics of being reliable in performance, reasonable in structure, easy to operate and maintain, environment friendly in construction and the like.

The invention relates to a method for laser deep penetration-brazing connection of a dissimilar material. The method comprises the steps that a laser welding head, a high-pressure gas column nozzle and a protective gas spray pipe can move relative to a base material, when the backside temperature of the base material reaches or exceeds the gasification temperature value of the base material, the laser welding head and the high-pressure gas column nozzle are rotated, the laser welding head is made to incline relative to the upper surface of a workpiece, the high-pressure gas column nozzle is vertically aligned with the upper surface of the workpiece, a high-pressure gas column nozzle gas supply valve is controlled, and an inert gas column sprayed by the high-pressure gas column nozzle penetrates a small welding hole. According to the method for laser deep penetration-brazing connection of the dissimilar material, the high-pressure tiny gas column is used for assisting in maintaining the small hole, uniform distribution of laser energy in the depth direction of the small welding hole is optimized, it is avoided that the laser energy overflows and is lost, and groove-free laser deep penetration-brazing connection of the dissimilar material is achieved.

The invention relates to a multistage straw fine crushing and dispersing field returning device and belongs to the technical field of agricultural machinery. The multistage straw fine crushing and dispersing field returning device comprises a housing (1) and a gearbox (3), wherein the housing (1) comprises an upper cutter distance adjusting groove (1141), a lower cutter distance adjusting groove (1142), a hydraulic rod support rod (115), a dispersing accelerating device mounting hole (117), a dispersing adjusting device mounting hole (1142), a cutter distance adjusting device (6), a hydraulicrod (7), a cutter distance adjusting device support rod (8), a straight-cutter crushing device (10), a dispersing accelerating device (11) and a picking crushing device (12). The multistage straw fine crushing and dispersing field returning device has the advantages that the fixed cutter of a traditional crushing field returning machine is changed into a rotary straight cutter, so that energy-saving straw cutting is achieved; by a hydraulic device, the distance between a 'Y'-shaped crushing cutter and the straight cutter can be adjusted in real time according to the straw distribution conditions in a field, a better straw crushing effect is achieved, and the probability that the device is blocked by the straw can be lowered at the same time.

The invention provides a method for reducing color difference defects on an IF steel surface, which is used for mitigating the color difference defects on the IF steel surface. The method comprises the steps of reducing the emulsion concentration and the emulsion jet flow of a fifth acid rolling rack so as to reduce the accumulation of an emulsion on the upper surface of a steel plate and betweenrollers; reducing the content of iron powder in the emulsion of the fifth acid rolling rack through a magnetic filter; reducing the contact angle of rolling oil in the emulsion so as to improve the spread uniformity of an oil film; and increasing the leveling elongation of the flat segment of a steel strip after continuous annealing. The method solves the technical problem of the color differencedefects on the IF steel surface in the prior art, therefore achieving the technical purpose of improving the quality of the IF steel surface.

The invention discloses a snow-melting agent spreading device and a snow-melting agent spreading vehicle with the same. The spreading device comprises a material guide system, the feeding end of the material guide system is respectively communicated with the spreader bin and the pre-wetting solution supply device so as to guide and convey the solid snow-melting agent and the pre-wetting solution;the material guide system is connected with a driving assembly, the driving end of the driving assembly is connected with a spreading disc set, and the spreading disc set is arranged corresponding tothe discharging end of the material guide system so as to contain the solid snow-melting agent and the pre-wetting solution liquid which are guided out by the material guide system and enable the solid snow-melting agent and the pre-wetting solution to be fully mixed to form the pre-wetting snow-melting agent. The spreading device also comprises a control system which is connected with the drivingassembly; the control system is used for controlling the driving assembly to act so as to enable the spreading disc set to rotate, so that the pre-wetting snow-melting agent on the spreading disc setis evenly spread outwards in the tangential direction of the spreading disc set, and the control system is further used for detecting the rotating speed of the spreading disc set and the ground clearance of the spreading disc set and obtaining the spreading width of the pre-wetting snow-melting agent according to the rotating speed and the ground clearance.

The invention discloses a novel uniformly flowing liquid lithium limiter structure applied to a fusion device, which comprises a collection box, wherein the bottom end of the collection box is provided with double built-in electromagnetic pump, a limiter base is arranged above the collection box, the base of the limiter base is provided with a heating wire and a thermocouple, the outer surface ofthe inner side of the limiter base is clamped with supply pipes connected with liquid lithium, a pump channel is welded between two electrodes in the double built-in electromagnetic pump, the pump channel is communicated with the supply pipes above, the top of the limiter base is provided with a distribution box, and the distribution box is integrally molded and has a structure with uniformly distributed distribution holes. The novel uniformly flowing liquid lithium limiter structure can better achieve supply of the liquid lithium by using a device toroidal field and the additional direct current driving double built-in electromagnetic pump structure, can realize uniform distribution of the liquid lithium through the integrally molded distribution box, and can effectively improve the spreading uniformity of the liquid lithium by using the limiter base with good lamination and a micro-capillary structure perpendicular to the flowing direction of the liquid lithium.

The invention discloses an LED chip of a perpendicular structure and a manufacturing method thereof. The manufacturing method comprises the steps that a first substrate is provided, and an N-type gallium nitride layer, a quantum well layer and a P-type gallium nitride layer are formed on the first substrate; the first substrate is etched to form a first groove, and the N-type gallium nitride layer is exposed; an Ohmic contact layer, a mirror and an insulating layer are formed on the P-type gallium nitride layer, the insulating layer covers the first groove, the portion, in the center of the first groove, of the insulating layer is etched, and the N-type gallium nitride layer is exposed; an N electrode is formed in the first groove, and a bonding layer is formed on the insulating layer and the N electrode; the bonding layer is in bonding with a bonding substrate, and the first substrate is removed; the N-type gallium nitride layer, the quantum well layer and the P-type gallium nitride layer are etched, and a second groove is formed; a P electrode is formed in the second groove. The obtained LED chip of the perpendicular structure is further provided. The chip packaging difficulty is simplified, the expanding evenness of current is improved, and driving under high current is achieved.

The invention discloses a rapid feeding device for rice-shrimp comprehensive planting and breeding feed, and relates to the field of rice and shrimp farming. The rapid feeding device comprises a moving bottom plate, a swing feeding box and a storage hopper, wherein a rotary supporting seat is mounted in the middle of the moving bottom plate, the swing feeding box is rotationally mounted on the rotary supporting seat, the storage hopper is fixedly mounted on the moving bottom plate through a supporting frame and located right above the swing feeding box, a discharge port is fixedly formed in the bottom of the storage hopper, and a flow control valve is mounted at the discharge port. The rapid feeding device is novel in design, simple in structure and convenient to use and can automaticallythrow the feed to paddy fields along the paddy field edges, so that not only is feeding efficiency of the feed increased, but also workload and labor intensity are greatly reduced, meanwhile, the swing feeding box can swing at a certain angle, feed throwing uniformity is improved, the feed can cover the paddy fields more comprehensively, and yield of shrimps per unit area is increased.

The invention discloses seed screening equipment. The seed screening equipment comprises a base, wherein brackets are symmetrically arranged on two sides of the base; a feed inlet is arranged on the upper part of the bracket on the right side; a first motor is arranged in the middle of the bracket on the right side; the first motor is transversely connected with and installed with a first shaft; ascrew feeder is arranged on the first shaft; a spreader is arranged on the left side of the screw feeder; the spreader is arranged on the first shaft through an annular motor; and two stirring are vertically and sequentially arranged on the left side of the spreader along the first shaft; the stirring comprises a shaft sleeve sleeving the shaft; the shaft sleeve is symmetrically provided with first connecting rods; each of the first connecting rod is provided with a second shaft; the second shaft is flexibly connected with a stirring fin; the left bracket is provided with a second motor; thesecond motor is provided with a third shaft; the third shaft is coaxial with the first shaft; the outer side of the third shaft is sleeved with an inner sieve barrel; and the inner side of the inner sieve barrel is provided with a first threaded protrusion. The seed screening equipment can improve the defects of the prior art and improve the screening effect of the seed screening equipment.

The invention belongs to the field of medical catheters, and particularly relates to a hydrophilic lubricating coating for the surface of a medical catheter. The hydrophilic lubricating coating for the surface of the medical catheter is prepared from the following raw materials in parts by weight: 20 to 40 parts of polyvinylpyrrolidone, 10 to 20 parts of polyvinyl alcohol, 10 to 20 parts of polyethyleneimine, 5 to 15 parts of hydroxyethyl starch, 5 to 15 parts of cross-linked polyacrylic resin, 10 to 20 parts of maleic anhydride grafted SEBS and 40 to 60 parts of a solvent. The number-average molecular weight of the polyvinylpyrrolidone is 1 to 1.76 million; and the average polymerization degree of the polyvinyl alcohol is 2400 to 2500, and the alcoholysis degree is 98 to 99 mol percent. The hydrophilic lubricating coating for the surface of the medical catheter provided by the invention has the advantages of good adhesive property to a medical catheter base material and good flowability, and the lubricity of the wetted medical catheter is improved.

The invention discloses a laminated plate type spreading mechanism. The laminated plate type spreading mechanism comprises a structural plate A and a structural plate B, which are attached to each other, wherein a semi-closed through hole which is formed by the structural plate A and the concave surfaces of the structural plate B is formed inside the spreading mechanism; a plurality of flow guide plates which are formed by overturning the structural plate A outwardly are arranged on the structural plate A; the concave surfaces are arranged at the positions, corresponding to the structural plate A, on the structural plate B; the concave surfaces and the outwardly-overturned flow guide plates form a flow guide channel of asphalt; the opening end of the semi-closed through hole is circular and is connected with an asphalt feeding pipe. Compared with a conventional array nozzle type spreading mechanism, the laminated plate type spreading mechanism is higher in spreading uniformity and wider in coverage range during practical operation.

The invention relates to a centrifugal disc type broadcaster, and belongs to a fertilizing and seeding device in the technical field of agriculture. A centrifugal type seed/fertilizer dual-purpose broadcaster comprises a material box, a machine frame, an electric control system, a feeding device, a blanking adjusting mechanism and a scattering device, the feeding device is installed on the lower portion of the material box and comprises a feeding sharing assembly, a fertilizer supplying assembly and a seed supplying assembly, the feeding sharing assembly is communicated with the scattering device through the blanking adjusting mechanism, and the fertilizer supplying assembly is communicated with the scattering device through the blanking adjusting mechanism. The fertilizer supply assembly and the seed supply assembly can be respectively mounted in the material supply sharing assembly, and the seeding rate of fertilizer supply or seed supply is controlled under the action of the electric control system; the scattering device is installed at the bottom of the machine frame and used for scattering seeds or fertilizer to the ground. The device has the following advantages: 1, the spreading amount can be accurately controlled in a larger range, the feeding device is convenient to replace, and the spreading amount can be controlled by remotely controlling the rotating speed of the feeding motor in real time through the control panel; 2, the adjustable double-point blanking mode can make the broadcast sowing effect more uniform, and the utilization rate of the broadcast sowing machine is greatly improved.

The invention discloses a method for forming an electron transport layer of a perovskite solar cell, and the method comprises the steps: (1) carrying out the first ultraviolet ozone processing of an electrode surface of a substrate, and obtaining a printing substrate; (2) depositing mesoporous titanium dioxide slurry on the printing substrate through a silk-screen printing technology to form a mesoporous titanium dioxide wet film; (3) carrying out second ultraviolet ozone treatment on the substrate with the mesoporous titanium dioxide wet film again, performing drying and sintering to obtain the mesoporous titanium dioxide electron transport layer. According to the forming method, an ultrathin high-quality large-area mesoporous titanium dioxide film can be formed.

The invention relates to the field of agricultural machinery, in particular to a multifunctional organic fertilizer spreader driven by an engine. The multifunctional organic fertilizer spreader comprises a rack and travelling wheels, wherein a fertilizer box and a power input end are arranged on the rack; an opening is formed in the fertilizer box; a conveying auger is arranged close to the lower part in the fertilizer box; an arc cover plate is arranged above the conveying auger; the arc cover plate extends backwards out of the fertilizer box and is fixedly connected with a bearing, and a fertilizer blanking port is formed below the arc cover plate and communicated with inside of the fertilizer box; fertilizer slideways are arranged at the lower end close to the fertilizer blanking port and outside the fertilizer box, and fixing piles and stopping piles are further arranged at the lower end, close to the fertilizer blanking port, of the fertilizer box. The multifunctional organic fertilizer spreader is simple in structure and convenient to maintain, increases dispersing efficiency of lumpy, granular and powdery organic fertilizer and the uniformity degree of fertilizer dispersing when used for hauling and dispersing the organic solid fertilizer, has high working efficiency, performance of time saving and labor saving, economy and practicability, and is multi-purpose and convenient to switch.