388results about How to "Reduce production process" patented technology

The invention relates to a wide-temperature high-precision optical acceleration sensitive chip and sensor based on a microcavity interferometer principle and a manufacturing method thereof, the wide-temperature high-precision optical acceleration sensitive chip comprises a first substrate, a second substrate and a third substrate, an optical fiber mounting seat and a light through hole are formed on the first substrate, a beam structure and an inertial mass block are processed on the second substrate, and the beam structure is arranged on the third substrate. The first substrate, the second substrate and the third substrate are all made of double-polished super-flat silicon wafers, a single-mode optical fiber assembly is fixed to the optical fiber installation base, the end face of the single-mode optical fiber assembly is subjected to precise grinding and is perpendicular to the axial direction of an optical fiber core, and a first cavity mirror is formed by means of the end face of the side, facing the light through hole, of the inertial mass block. A second cavity mirror is formed on the end face of the single-mode optical fiber assembly, the first cavity mirror and the second cavity mirror form an F-P interference cavity, and the first substrate, the second substrate and the third substrate are connected through the silicon-silicon bonding technology.

The invention relates to the technical field of all-vanadium redox flow batteries, in particular to a sulfonated polybenzimidazole proton exchange membrane as well as a preparation method and application thereof. The proton exchange membrane structurally comprises a polybenzimidazole polymer main chain and a sulfonic acid group, the free volume of the polybenzimidazole polymer is regulated and controlled by synthesizing raw materials with different structures, and the polybenzimidazole proton exchange membrane is obtained by sulfonating the polybenzimidazole polymer. Aiming at the problems of cross permeation of vanadium ion electrolyte of a positive electrode and a negative electrode of the all-vanadium redox flow battery, capacity attenuation of the all-vanadium redox flow battery and low energy conversion efficiency, the preparation method comprises the following steps: constructing a polybenzimidazole polymer main chain by selecting raw materials with high rigidity and high free volume; the mechanical property of the polybenzimidazole membrane is improved while a rapid ion channel is constructed in the polymer membrane, and water molecules can be contained to limit swelling of a membrane material.

The invention discloses a method for preparing synthetic quartz sand by a sol-gel method, which comprises the following steps: mixing silicon alkoxide and an alcohol solvent, and stirring to form a homogeneous solution marked as L1; mixing an acidic catalyst, an alcohol solvent and ultrapure water to form a mixed solution, and recording the mixed solution as L2; dropwise adding the L1 solution into the L2 solution, and continuously stirring and hydrolyzing to obtain sol; dropwise adding ammonia water into the sol until the pH value is 5-10, and standing in a vacuum drying oven to obtain wet gel; and drying and sintering the wet gel to obtain the high-purity synthetic quartz sand. The gelation time is accurately controlled through acid-base two-step catalysis, the production period is shortened, and the production efficiency is improved; meanwhile, the size and uniformity of silicon dioxide particles are controlled by controlling the dripping speed of a silicon source, so that the sintering temperature of the synthesized quartz sand is greatly reduced, and the solvent is recycled through distillation when wet gel is dried, so that the production cost is reduced, and the pollution to the environment is reduced.

The invention belongs to the field of semiconductor bridge current protection, and particularly relates to a semiconductor bridge current protection method based on a vanadium dioxide thick film thermistor. Firstly, copper, nickel and gold interdigital electrodes are deposited and grown on an aluminum oxide ceramic substrate, then a methanol solution of vanadyl acetylacetonate is sprayed on the surface of the heated interdigital electrode, a vanadium dioxide thermistor device is obtained, the vanadium dioxide thermistor device is connected with a semiconductor bridge in parallel, and current protection of the semiconductor bridge thermistor is achieved. Vanadium dioxide with a single valence state can be synthesized by adjusting the synthesis method and process, M-phase vanadium dioxide is synthesized on the interdigital electrode in one step, the vanadium dioxide prepared by the method avoids the tedious process that vanadium dioxide powder is firstly prepared and then transplanted to the surface of the interdigital electrode, and the preparation method is simple and convenient to operate. And the vanadium dioxide can be more stably combined on the surface of the interdigital electrode.

The utility model discloses integrally-woven warp-knitted heel sheet mesh cloth, which belongs to the technical field of textile, and comprises a mesh cloth body integrally woven by a jacquard warp knitting machine, the mesh cloth body comprises a surface layer, a bottom layer and a connecting layer, and at least one area middle layer of the mesh cloth body expands a vertical space between the surface layer and the bottom layer to form a heel sheet area; and the surface layer and the bottom layer are tightly connected by the middle layer in other areas to form plain areas.

The relay comprises a ceramic cover, an auxiliary static contact fixedly arranged on the ceramic cover, a coil assembly arranged below the ceramic cover and a PCB used for controlling the coil assembly to work, and the coil assembly is provided with a winding terminal; the relay further comprises an auxiliary leading-out terminal correspondingly connected with the auxiliary static contact, a coil leading-out terminal electrically connected with the winding terminal through the PCB and an insulating part used for fixedly holding the auxiliary leading-out terminal and the coil leading-out terminal, and the insulating part is integrally formed through injection molding. According to the relay, the insulating part used for fixedly holding the auxiliary leading-out terminal and the coil leading-out terminal is integrally formed through injection molding, so that forming and assembling are facilitated, the manufacturing procedures are reduced, the manufacturing efficiency is improved, the manufacturing cost is reduced, the structural strength is enhanced, and the relay is more compact in structure and smaller in size.

The invention provides a one-time formed false eyelash and a preparation and wearing method thereof, and the preparation method comprises the following steps: S1, selecting a sheet-shaped membrane material as a base material, and cutting the base material into filaments by adopting laser cutting equipment according to preset parameters to form a single eyelash or an integrally formed semi-finished eyelash; s2, if the single eyelashes are formed through cutting, the two single eyelashes need to be combined and fixed, and semi-finished products of different styles are obtained; and S3, the semi-finished product is placed in a pressure plastic shaping device, the pressure plastic shaping device applies pressure to the semi-finished eyelash, the semi-finished eyelash is bent and shaped, and the false eyelash is obtained. According to the method, the false eyelashes are formed at a time through laser cutting, the preparation efficiency is high, and the false eyelashes formed by one-time forming of the eyelash stems and the eyelash filaments are higher in wearing comfort. Meanwhile, the false eyelash is provided with the grafting column, can be conveniently grafted with a real eyelash, and is convenient to wear and long in service life.

The invention discloses automatic forming equipment for plastic part production, and relates to the technical field of injection molding. A turntable; multiple groups of molds; an injection gun; a molded part; a shearing mechanism; a lifting mechanism; in the rotating process of the rotating disc, the molds can conduct a first mold opening stroke and a second mold opening stroke, in the first mold opening stroke, only the two outer molds are driven to slide away from each other, so that the two inner molds are exposed, after the two inner molds are exposed, the rotating disc rotates to passively enable the lifting mechanism to drive the shearing mechanism to descend, and an abutting plate abuts against the side walls of the inner molds; along with rotation of the rotating disc, the two cutters move close to each other along the arc shape to cut the pouring gate, and after cutting, the second mold opening stroke enables the two inner molds to be opened, so that a formed part with the cut pouring gate is subjected to blanking, then the inner molds and the outer molds are reset, the pouring gate can be cut immediately after injection molding, production procedures are reduced, production efficiency is improved, and production cost is reduced. And the production efficiency is improved.

The invention relates to the technical field of catalyst preparation, in particular to a deep hydrodenitrogenation and desulfurization catalyst and a preparation method thereof. According to the preparation method, a novel hydrodenitrogenation and desulfurization catalyst is obtained by redesigning raw materials of the catalyst and a preparation process of the catalyst. The raw material is a pseudo-boehmite product, and the active components comprise 18-25% of molybdenum oxide, 3.3-5.5% of nickel oxide and 1-3% of silicon oxide. The catalyst not only solves the problem of easy coking, but also prolongs the service life of the product to 2-3 years, can effectively reduce the use amount of the hydrodenitrogenation and desulfurization catalyst, reduces the use cost of the hydrodenitrogenation and desulfurization catalyst, and improves the hydrodenitrogenation and desulfurization effect of a reactor.

The invention discloses a self-centering anti-interference flange type clamping machining device, relates to the technical field of clamping devices for machining, and solves the problem that interference exists in machining of a radial positioning surface by a positioning element after radial positioning in the prior art. The device comprises a clamp body, an axial positioning assembly is fixedly arranged at the front end of the clamp body, a centering assembly capable of moving in the axial direction and the radial direction is arranged on the clamp body, and the positioning face of the axial positioning assembly and the positioning end of the centering assembly are used for conducting axial positioning and centering positioning on a workpiece respectively. The centering assembly is connected with the axial pushing mechanism, and the axial pushing mechanism is used for driving the centering assembly to slide in the axial direction, so that the positioning end of the centering assembly stretches out or retracts relative to the positioning face of the axial positioning assembly in the axial direction. A radial opening mechanism is arranged on the clamp body and used for driving the centering assembly to be radially expanded or folded. On the basis of flange clamping, the centering assembly and the axial pushing mechanism are additionally arranged, the self-centering function of the clamp and the anti-interference function of a positioning element are achieved, and the production efficiency of products is improved.

The utility model discloses a three-phase three-layer multi-rotor motor structure and a wheel hub motor, the motor structure comprises three single-phase multi-rotor motor sets which are installed along the axial direction of a main shaft, each single-phase multi-rotor motor set is a 360-degree closed ring structure composed of a plurality of small motors, inner rotors and stators of the motor sets are alternately arranged, and two sides of each stator are provided with semicircular magnetic poles by taking a winding groove as a center. The permanent magnet rotor is coupled with stator semicircular magnetic poles on two adjacent sides to form a small motor; the rotors of the three motor sets are arranged in a one-to-one correspondence mode in the axial direction of the motors and coaxially connected in series through rotor through shafts, and the magnetic field directions of the rotors are sequentially staggered by 120 degrees. And the main shaft fluted disc is fixed on the main shaft, is used as a timing gear to be meshed with the pinions arranged on the rotor through shafts so as to drive the three motor groups to continuously operate, and is also used as a thrust gear to output motor torque. The hub motor provided by the utility model has the advantages of higher rotating speed, higher efficiency, smaller volume and lighter weight.

The utility model relates to the field of vehicle bodies, in particular to an A-column reinforcing assembly and a vehicle body framework assembly with the A-column reinforcing assembly, which comprise a reinforcing assembly part, and the reinforcing assembly part comprises an A-column reinforcing plate and a side wall front connecting plate; the A column reinforcing plate and the side wall front connecting plate adopt an integrated design; the A column reinforcing plate and the side wall front connecting plate are integrated into a whole, one-time forming is achieved through the high-pressure die-casting technology, connection such as welding is not needed again, the production technology is greatly simplified, the used material is aluminum alloy, and the weight can be reduced by 25%-35%; by means of the design, the automobile body can be lightened, the manufacturing process is shortened, the number of parts is reduced, the assembly precision is improved, and the whole automobile integration degree is improved.

The invention provides a display panel and a display device, which are used for enabling the display panel to support a peep-proof mode and a sharing mode and can simplify the preparation process of the display panel while ensuring the peep-proof display effect and the sharing display effect of the display panel. In the display panel, a light-emitting unit layer comprises a plurality of first-color light-emitting units, and the plurality of first-color light-emitting units at least comprise first light-emitting units and second light-emitting units; the plurality of light filtering units comprise a plurality of first color light filtering units and second color light filtering units which are different in color, and the first color light filtering units and the first color light emitting units are at least partially overlapped in the direction perpendicular to the plane where the substrate is located; the light shielding layer comprises a first light shielding part, a first opening and a second opening, and the first light shielding part at least comprises a first color light filtering unit and a second color light filtering unit which are arranged in a stacked mode.

The utility model belongs to the technical field of fire extinguisher production equipment, and particularly relates to a bottle erecting device for fire extinguisher production, which comprises a rack, two rotating tables symmetrically distributed front and back are fixedly arranged on the upper side of the rack, a round rod is rotatably assembled on the two rotating tables together, a motor is mounted on the rear side of the rack, and an output shaft of the motor is in transmission connection with the round rod. The side wall of the round rod is fixedly provided with four overturning plates which are circumferentially distributed, the upper side of the rack is fixedly provided with a plurality of supporting rods which are linearly distributed, the upper sides of the supporting rods are jointly and fixedly provided with an inclined plate, the upper side of the rack is fixedly provided with a bearing plate, and the upper side of the rack is provided with a pushing part; the fire extinguisher bottle body is placed on the overturning plate with the right side in the horizontal state, then the motor is started to drive the four overturning plates to rotate, the fire extinguisher bottle body which is placed upside down is rotated to the vertical state, then the fire extinguisher bottle body in the vertical state is pushed to the upper side of the bearing plate through the pushing piece, manual overturning of the fire extinguisher bottle body is not needed, the production cost is saved, and the production efficiency is improved. And the production efficiency is improved.

The utility model relates to the technical field of part preparation, in particular to a copper-containing part preparation mold which comprises a base and a mold body, a mold core protruding upwards is arranged in the middle of the base, a vertically-through forming hole is formed in the middle of the mold body, the mold body is detachably arranged on the base, and the mold core is located in the forming hole. And a cavity is formed between the inner side wall of the forming hole and the outer side wall of the core. According to the preparation mold of the copper-containing part, the auxiliary body part is arranged on the copper main body part to form the copper-containing part while the copper main body part is processed and formed by matching with a special preparation method of the copper-containing part, so that a glue bonding process is not needed, the preparation process of the copper-containing part is reduced, and the production efficiency is improved. The copper main body part and the auxiliary body part are connected mainly through the shapes of the copper main body part and the auxiliary body part, and compared with a glue pasting mode, the connection stability of the copper main body part and the auxiliary body part is remarkably improved.

The invention relates to the technical field of metal heat treatment, in particular to a process for realizing diffusion bonding of dissimilar materials through a powder metallurgy process, which comprises the following steps of: controlling the mechanical property, the dimensional accuracy, the surface appearance and the structural integrity of a formed blank through selection of alloy elements, regulation and control of component proportion and optimization of additive components and content; the wear-resistant material powder is pressed into a blank, then the sintering temperature, the sintering time, the sintering pressure and other parameters are used for control, blank forming is achieved, the bonding strength of the blank and parts is improved, a steel-based typical structural part with local high wear resistance is manufactured, the strength and wear resistance of the mechanical parts are greatly improved, and the service life of the mechanical parts is greatly prolonged. The dissimilar material connecting process is suitable for engineering forming design and preparation production of locally-reinforced wear-resistant structural parts such as mining machinery, oil and gas pipelines, ocean platforms and bridge structures.

The invention relates to a flow adjusting mechanism and a nozzle oil way switching control method, and belongs to the technical field of aero-engines. The flow adjusting mechanism comprises a supporting shell and a plunger which is arranged in the supporting shell in a sleeved mode and can move in the axial direction of the supporting shell, and the upper end and the lower end of the plunger protrude out of the supporting shell outwards; a gland is arranged at the upper part of the plunger; an adjusting gasket is arranged between the inner ring surface of the gland and the plunger; and an elastic component is arranged between the gland and the supporting shell. According to the nozzle oil way switching control method, the flow adjusting mechanism is arranged in the nozzle shell with the single oil supply port, the main oil way is not opened when the oil pressure is small, and after the engine state is improved, the oil pressure is increased, and the main oil way is opened after the plunger gradually protrudes out of the supporting shell; along with increase of oil pressure, the opening degree of the oil supply hole is increased, and the flow adjusting function is achieved. Through the introduction of the flow regulating mechanism, a pipeline system for supplying oil to the nozzle can be optimized from respective double oil ways for supplying oil to a single oil way for sharing oil supply, so that the weight is reduced, and the cost is reduced.

The utility model belongs to the technical field of plastic processing, and particularly relates to a plastic particle drying device which comprises a charging barrel, a hopper is fixedly connected to the bottom of the charging barrel, a discharging bin is fixedly connected to the bottom of the hopper, and partition plates are fixedly connected to the inner wall of the charging barrel, the inner wall of the hopper and the inner wall of the discharging bin in an array mode. A sleeve is fixedly connected to the cross point of the partition plate and located in the charging barrel, a first rotating shaft is rotationally connected to the inner wall of the sleeve, a baffle is fixedly connected to the outer wall of the partition plate, and a rotating sieve tray is fixedly connected to the outer wall of the first rotating shaft and located at the bottom of the baffle; tooth blocks are fixedly connected to the bottom of the rotary sieve tray in an array mode. Compared with the prior art, the device can dry and process various particles of different types at the same time, so that each particle can be uniformly dried, the particles can be shaken to be scattered when falling down, the particles are prevented from caking, various particles can be processed at the same time by using one device, the processing efficiency is improved, and the production cost is saved.

The utility model discloses a photovoltaic assembly, which comprises a plurality of battery pieces, and two adjacent battery pieces are arranged at intervals; the plurality of welding strips are connected between two adjacent battery pieces, each welding strip comprises a welding strip body and a black coating, the black coating is arranged on the outer surface of the welding strip body, and the black coating is at least located at a gap between two adjacent battery pieces. According to the photovoltaic assembly provided by the utility model, the manufacturing procedures of the photovoltaic assembly are reduced, the production efficiency of the photovoltaic assembly is improved, and the use stability of the photovoltaic assembly is also improved.

The invention discloses an additive forging composite forming method for integrally loading local deformation on an aluminum alloy lightweight wheel-shaped component, and relates to an additive forging composite forming method for a wheel-shaped component. The problems that an existing spaceflight aluminum alloy light-weight wheel-shaped component is poor in direct additive forming structure performance, a forging forming die is difficult to fill, the forging process is long, and the die cost is high are solved. The method comprises the following steps: 1, performing additive forming on a main blank; 2, pre-forging and forming the spoke; 3, machining and finishing the pre-forged piece; fourthly, secondary material adding is conducted on the rim; 5, carrying out homogenization heat treatment on the whole wheel; 6, integrally forging and forming the wheel; and 7, wheel direct aging strengthening treatment. The method is used for additive forging composite forming of the aluminum alloy light-weight wheel-shaped component subjected to overall loading and local deformation.

The invention relates to a special-shaped flat steel pass design and rolling technology, and relates to the technical field of pass rolling. A square billet continuous casting billet is used for heating the square billet to a high-temperature state; the heated steel billets step by step on a steel tapping roller way, the steel tapping roller way conveys the steel billets, oxide scales on the surfaces of the steel billets are removed through a high-pressure water descaling box, the steel billets enter a rough rolling area to be rolled, the number of rough rolling units is six, and box rolling, square rolling, oval rolling, round rolling, oval rolling and round hole rolling are sequentially used; head and tail defects of the blank are removed, the blank enters an intermediate rolling unit to be rolled, the intermediate rolling unit is provided with six machines, and oval rolling, round rolling, flat rolling, vertical roll rolling, flat rolling and flat hole pattern rolling are sequentially used; the defects of head bending and the like are removed, the steel plate enters a finishing mill group to be rolled, the finishing mill group is provided with five machines, and flat, vertical roll, flat, vertical hole and flat roll hole patterns are sequentially used for rolling. And performing multi-length shearing according to a set length. And cooling on a cooling bed after multi-length. The special-shaped flat steel can be formed at a time through hot rolling, energy is saved, and the production efficiency is improved.

According to the high-pressure acid leaching equipment with the scale removing function and the working method thereof, the high-pressure acid leaching equipment comprises an autoclave, a steam pipeline and a scale removing liquid inlet bypass, and the steam pipeline is connected with the autoclave and used for introducing high-pressure steam into the autoclave. The scale cleaning liquid inlet bypass is connected with the steam pipeline, and the scale cleaning liquid inlet bypass can introduce scale cleaning liquid into the autoclave through the steam pipeline so as to clean at least part of scales in the autoclave. According to the high-pressure acid leaching equipment with the scale cleaning function and the working method thereof, the scale cleaning operation is carried out by utilizing the steam pipeline, the working difficulty of the scale cleaning operation can be reduced, and the cost of the scale cleaning device is reduced.

The invention discloses a sphygmomanometer module, and relates to the field of sphygmomanometers, the sphygmomanometer module comprises a pneumatic pump motor, the outer surface of the pneumatic pump motor is fixedly connected with a base, and the outer surface of the base is in threaded connection with a motor screw. A PCB assembly unit is fixedly connected to the top of the base, an electromagnetic valve framework is placed on the base, the outer surface of the electromagnetic valve framework is sleeved with an electromagnetic valve coil, an eccentric wheel is fixedly connected to the output end of a pneumatic pump motor, and a rocker is hinged to the end, away from the pneumatic pump motor, of the eccentric wheel. A leather cup support is fixedly connected to the outer surface of the rocker, a leather cup is placed on the inner wall of the leather cup support, a valve pressing plate is fixedly connected to the outer surface of the leather cup support, a rubber valve block is inserted into the inner wall of the valve pressing plate, and a pump head upper cover is fixedly connected to the side, away from the leather cup support, of the valve pressing plate. And the outer surface of the pump head upper cover is connected with a pump body screw.

The invention belongs to the field of geological monitoring, and discloses a loess macropore constant water head preferential seepage tail end channel observation device and method, and the device comprises a camera, a funnel, polystyrene foam, a first burette, a second burette, a constant water head three-way pipe, a drainage bottle, a first iron stand and a second iron stand; one end of the camera is fixed on the first iron stand; a permeable stone is arranged in the middle of a large opening of the funnel, the surface of the permeable stone is used for fixing an undisturbed loess sample and a supporting tube, and polystyrene foam is filled between the supporting tube and the loess sample; the first end and the third end of the constant water head three-way pipe are respectively connected with the water discharging bottle and the first burette; and the first burette and the second burette are connected through the second three-way pipe and the third three-way pipe. A soil sample is not disturbed, the height of a water head is fixed, a macropore preferential seepage tail end channel can be quickly observed, the specific yield can be quickly measured, the working efficiency is high, and the device is flexible and detachable. The problems that at present, preferential seepage macropore channels in loess are difficult to capture, and the specific yield of undisturbed loess is difficult to measure are effectively solved.

The utility model provides a simple umbrella cover containing device and a folding umbrella, and relates to the technical field of umbrellas, the simple umbrella cover containing device comprises a stator and a rotor rotationally connected with the stator, the stator is used for being fixedly connected with an umbrella body, and the stator and the rotor form a containing space; one end, far away from the opening, of the umbrella cover is fixed on the rotor; the side, facing the containing space, of the stator is provided with a plurality of first resistance parts used for abutting against the inner surface of the umbrella cover in a protruding mode, or the side, facing the umbrella body, of the rotor is provided with a plurality of second resistance parts used for abutting against the outer surface of the umbrella cover, and the resistance parts abut against the umbrella cover to increase winding resistance. Therefore, when the rotor rotates relative to the stator, the umbrella cover is promoted to move in the axial direction of the umbrella body and be rolled in the containing space. Therefore, the problems that an existing umbrella cover storage device is inconvenient to store and operate, complex in structure and large in size are solved.

The utility model discloses a gas-liquid separator with an anti-misconnection function, which belongs to the field of refrigeration equipment and comprises a gas-liquid separation cylinder, a gas inlet pipe and a gas suction pipe, the gas inlet pipe and the gas suction pipe are arranged in the gas-liquid separation cylinder, and the top of the gas-liquid separation cylinder is provided with a gas inlet and a gas suction port which are respectively communicated with the gas inlet pipe and the gas suction pipe. The air inlet pipe and the air suction pipe are the same in structure and are integrally in a U shape, one connector at the upper end of the air inlet pipe and one connector at the upper end of the air suction pipe are communicated with the air inlet and the air suction port respectively, and the other connector faces the side walls, in different directions, of the air-liquid separation barrel by arranging an elbow, and the bottom bending positions of the air inlet pipe and the air suction pipe are close to the bottom of the air-liquid separation barrel. And an oil inlet is arranged at the position. The air inlet pipe and the air suction pipe which are the same in shape and structure are adopted, and the oil inlets are formed in the bottoms of the air inlet pipe and the air suction pipe, so that no matter how an external pipeline is in butt joint with the gas-liquid separator, it can be ensured that compressor oil enters the compressor, meanwhile, the universality of parts is enhanced, and the production efficiency and the assembly efficiency are improved.

The invention discloses a slice file generation method, a photocuring three-dimensional printing method, a photocuring three-dimensional printing device and a medium, and relates to the technical field of three-dimensional printing. The photocuring three-dimensional printing method comprises the steps that a slice file is obtained, the slice file comprises a slice contour image of at least one slice layer of a to-be-printed model, and the slice contour image comprises a plurality of line segments which are sequentially connected end to end; determining an exposure display image according to the section contour image, wherein the exposure display image comprises an area needing to be exposed and / or an area not needing to be exposed; and controlling the light source to expose according to the exposure display image so as to cure the to-be-cured material in the area corresponding to the area needing to be exposed in the material storage mechanism. According to the method, the occupied space of the slice file can be effectively reduced, and the transmission speed of the slice file is improved, so that the printing speed of the model is improved.

The invention discloses a slope cropland soil solidifying material based on agricultural waste and a preparation method thereof, and the slope cropland soil solidifying material is prepared from the following raw materials in parts by weight: 150-200 parts of a calcium lignosulphonate solution, 150-200 parts of a vinasse urease bacterium solution, 15-20 parts of phosphogypsum, 3-5 parts of urea, 2-3 parts of magnesium nitrate, 2-3 parts of calcium hydrophosphate and 2-3 parts of potassium carbonate. Wherein the calcium lignosulphonate solution is obtained by alkali treatment of corncobs, and the vinasse urease bacterial liquid is obtained by two-stage fermentation of corn vinasse with bacillus amyloliquefaciens and bacillus pasteurii. The prepared slope cropland soil solidification material can effectively utilize agricultural wastes, and can improve the soil structure and soil fertility and promote the growth of slope cropland plants while reducing water and soil loss.

The utility model discloses a loading tray, including frame, support structure and a plurality of ground feet, the frame includes a plurality of first beam frames that are connected end to end in order, the support structure includes a plurality of second beam frames that are distributed side by side at intervals, and the plurality of ground feet are installed between two adjacent first beam frames. The plurality of first beam frames and the plurality of second beam frames respectively adopt any one of a structure I, a structure II, a structure III and a structure IV; according to the carrying tray, the first structure, the second structure, the third structure and the fourth structure are arranged, the four structural forms are combined to form a frame and a supporting structure, and therefore the tray has the large bearing capacity and other performance and can be freely selected according to needs, the ground feet of special structures are adopted, and the carrying tray is convenient to use. When the trays are stacked, the distance between the upper tray and the lower tray is small, and the space occupied by stacking is small.

The utility model belongs to the technical field of burners, and particularly discloses a high-speed low-nitrogen burner which comprises an air shell, a gas pipe, a burning head and a burner nozzle, the gas pipe is arranged in the center of the air shell, the gas inlet end of the gas pipe extends out of the air shell, the burning head is arranged at the gas outlet end of the gas pipe, and the burner nozzle is arranged on the side, close to the burning head, of the air shell. A nozzle is formed in the end, away from the air shell, of the burner nozzle, an inner cavity is formed in the burner nozzle, the combustion head is arranged in the inner cavity, fuel gas and a small amount of air can be mixed through the combustion head to form an oxygen-deficient state, incomplete combustion is carried out in the oxygen-deficient state, the combustion temperature can be lowered, and NOx generation can be reduced. Incomplete combustion enters the inner cavity through the gas outlet and is mixed with excessive air in the inner cavity for combustion, the mixed gas can be fed into the hearth for combustion, CO can be converted into CO2, and NOx and CO generated during combustion of the burner can be efficiently and reliably reduced only through the combination of three simple structures.