1705 results about "Powder Spray" patented technology

The invention discloses a real-time monitoring and feedback control system for enamel electrostatic powder coating, and relates to the technical field of industrial enamel coating. The system comprises a data acquisition and monitoring module, a feedback control decision module, an execution mechanism control module, a spraying path planning and adjusting module, a parameter optimization and adaptive adjustment module and a multi-target cooperative adjustment strategy module. The system builds a standardized state vector and recognizes abnormity by collecting spraying enamel electrostatic powder state parameters, deposition error signals and environment interference data, and closed-loop control and dynamic adjustment of spray gun electrode voltage, powder supply amount and spray gun path parameters are achieved. Intelligent algorithms such as particle swarm optimization are introduced to optimize a controller and process parameters, the coating uniformity and the deposition efficiency are automatically balanced in combination with a multi-target collaborative strategy, and stable spraying quality is achieved under complex working conditions. The method has the advantages of self-learning, self-adaption and expandability, and the intelligent level and the production performance of the enamel electrostatic powder spraying process are remarkably improved.

The invention discloses a stainless steel tube optical detection device based on industrial vision, and belongs to the technical field of optical detection, the stainless steel tube optical detection device comprises a conveying mechanism used for conveying a stainless steel tube, and the conveying mechanism is provided with an optical detection mechanism used for carrying out optical detection on the stainless steel tube and a rotating mechanism used for driving the stainless steel tube to rotate; the conveying mechanism can automatically convey the stainless steel pipe to be subjected to optical detection, the next stainless steel pipe to be detected pushes the detected stainless steel pipe into the cleaning pool, and the stainless steel pipe to be detected reaches the optical detection mechanism to prepare for next optical detection; full-automatic continuous optical detection of the stainless steel pipe is realized, and the automation degree is high; the optical detection mechanism sprays fluorescent powder to the surface of the stainless steel pipe through the fluorescent powder spraying pipe, the rotating mechanism is started to drive the stainless steel pipe to rotate, the industrial camera in the upper detection shell is combined with the fluorescent powder to optically detect the surface of the stainless steel pipe, and the optical detection effect is good.

The invention discloses a powder spraying refining process for production of a rare earth oxide dispersion strengthened alloy, and belongs to the technical field of alloy smelting. During converter tapping, iron silicon aluminum 4.5-8.5 kg / t is adopted for strong deoxidation; after tapping is finished, 0.2-0.4 kg / t of rare earth aluminum alloy is added to the slag surface of the steel ladle for slag surface deoxidation; molten steel is conveyed to a powder spraying station, the temperature of the molten steel is regulated and controlled to be 1570-1610 DEG C, inert carrier gas is used for spraying rare earth powder into the molten steel at a high speed, the carrier gas conveying working pressure of steel ladle powder spraying is 3.0-4.0 bar, the carrier gas flow is 40-60 m < 3 > / h, the steel ladle powder spraying speed is 10-50 kg / min, and the dosage of the powder spraying agent is 1.0-50.0 kg / t. After the powder spraying refining process is adopted, the solid solution oxygen content in the steel can be increased to 100 ppm or above, and the solid solution content of RE elements can be increased to 300 ppm or above, so that nano rare earth oxide dispersion strengthened alloy is formed.

The invention relates to the technical field of metal material protective coatings, in particular to high-wear-resistance and corrosion-resistance mechanical steel and a preparation method thereof. Comprising the following steps that S1, the surface of a mechanical steel base body is pretreated, and pretreated mechanical steel is obtained; s2, a base coat and a metal layer are sequentially arranged on the surface of the pretreated mechanical steel; S21, base coat powder is sprayed to the surface of the pretreated mechanical steel through the high velocity oxy-fuel spraying technology, and the base coat is obtained; s22, metal layer powder is sprayed on the surface of the priming layer through the high velocity oxy-fuel spraying technology, and a metal layer is obtained; s3, the surface of the metal layer is evenly coated with a reinforcing coating in a brushing mode, and after drying and curing, a coating layer is obtained; and the high-wear-resistance and corrosion-resistance mechanical steel is prepared.

The utility model relates to the technical field of printing machines, and discloses a digital printing machine dusting assembly which comprises a powder storage tank, a stirring brush and a driving mechanism, a powder spraying head assembly is arranged at the lower end of the powder storage tank, the stirring brush is arranged in the powder storage tank corresponding to the powder spraying head assembly, and the driving mechanism is used for driving the stirring brush to rotate; the powder storage tank is further connected with an air pipe connector, and the air pipe connector is used for being connected with an air source to drive powder to be sprayed out of the powder spraying head assembly. According to the powder scattering assembly of the digital printing machine, the stirring brush corresponding to the powder spraying head assembly is arranged in the powder storage tank, the driving mechanism drives the stirring brush to rotate, in the powder scattering process, the air pipe connector is connected with the air source to drive powder to be sprayed out of the powder spraying head assembly, powder scattering is achieved, and meanwhile the stirring brush sweeps the powder spraying head assembly. The situation that the powder spraying head assembly is blocked in the powder spraying process is avoided, and the product quality is guaranteed.

The invention relates to the technical field of digital printing, and discloses a digital printing method, a printing stock is a transparent material and is printed on the reverse side of the printing stock, and the printing method comprises the following steps that gloss oil is printed on the printing stock in a jet printing mode, powder spraying is conducted, and curing is conducted at the same time; the ink spraying system sprays color ink to a printing stock for printing, and a corresponding mirror image color pattern is sprayed and printed; and white ink is jet-printed on the printing stock. According to the digital printing method, printing is carried out on the back face of the transparent printing stock, the pattern can be protected, it is guaranteed that the product always has a good visual effect, the effect that the front face is watched through back face printing and the effect that the front face and the back face are watched through back face printing can be achieved, the perception effect of the pattern is not affected, and the printing effect is good. And a better perception effect can be obtained.

The utility model provides molding powder spraying equipment capable of uniformly spraying. The molding powder spraying equipment comprises a main body mechanism and a shielding piece, the main body mechanism comprises a spraying chamber, a material pump is installed on one side of the spraying chamber, a spraying gun is installed at a discharging opening of the material pump, one end of the spraying gun penetrates through the spraying chamber, a material box is installed on one side of the spraying chamber, and a feeding opening of the material pump communicates with the material box; the shielding piece is composed of three annular baffles which are nested with one another, one side of each annular baffle is fixedly connected with a limiting plate, and a spraying groove is integrally formed in one side of each annular baffle; the servo motor is arranged to be matched with the rotating disc and the hook to drive the workpiece to rotate, the spraying gun conducts all-directional spraying on the workpiece, different annular baffles are selected according to the size of the workpiece in the spraying process, the annular baffles are moved downwards to conduct rotation limiting on the workpiece, the shaking amplitude of the workpiece is limited, and the plastic powder spraying space is reduced; and the scattered molding powder is easier to adhere to the surface of a workpiece.

The invention discloses a light spray coating and a construction process thereof. The light spray coating comprises 15-20% of cement, 15-20% of plant particles, 35-40% of building material particles, 15-18% of clay, 5-8% of siliceous superfine powder, 3-5% of cellulose, 3-5% of alumina micropowder and 0.02-0.05% of aluminum powder. The construction process comprises the following steps: S1, mixing and stirring the light spraying material, adding water accounting for about 3% of the total weight of the light spraying material for wetting, forming a semi-dry material, and filling the semi-dry material into a powder tank of a powder spraying machine; s2, a semi-dry method is adopted for spraying, the semi-dry material in the step S1 is fed into a muzzle of a powder spraying gun, atomized water is added into the muzzle, and the semi-dry material is sprayed to a construction part in the sequence of water first and material second; and rubber powder is added into the atomized water. The materials in the spray coating are simple and easy to obtain, the cost is low, the effects of comprehensive reinforcement and no influence on the internal ecology of the soil can be achieved, the construction is simple and rapid, and a construction foundation does not need to be built; the setting time is extremely short, and the construction period is not delayed; the terrain does not need to be considered, the construction surface is smooth, and the original construction part is not changed too much.

The invention provides a method for testing the strength of powder for spraying based on ultrasonic pulverization, which comprises the following steps: selecting spraying powder to be tested, and uniformly mixing with water to obtain a test raw material; performing ultrasonic cell crushing on the test raw material to obtain a crushed sample; and testing the particle size distribution of the crushed sample, calculating the powder crushing degree according to the particle size distribution, and evaluating the powder strength according to the powder crushing degree. According to the powder strength testing method provided by the invention, the process condition is closer to the actual working condition of a dynamic impact environment in the powder spraying process, the overall strength state of the powder is accurately evaluated, the operation is simpler and more convenient, the testing efficiency is high, the strength evaluation is accurate, and the method has great engineering application value.

The invention relates to the technical field of metal 3D printing equipment fault diagnosis, in particular to an intelligent fault diagnosis method for metal 3D printing equipment, which comprises the following steps of: calculating a quality value of a molten pool by monitoring state information of the molten pool in real time, judging whether the quality value is abnormal or not, and triggering a fault self-checking instruction if the quality value is abnormal; the method comprises the following steps: analyzing vibration amplitude and positioning error data of a laser scanning galvanometer, calculating a stability evaluation value and judging whether the stability evaluation value is normal or not, if so, monitoring power distribution and a focus drift distance of each height layer of a laser beam, calculating an irradiation evaluation value and judging whether the stability evaluation value is normal or not, and if not, monitoring the powder spraying amount of a powder nozzle, and comparing and analyzing the powder spraying amount with a reference value. And calculating a powder spraying evaluation value, judging whether the powder spraying evaluation value is normal or not, and if all the parts are abnormal, matching a fault grading condition table and determining a fault grade, so that intelligent and precise real-time fault diagnosis and automatic grading are realized, and the printing efficiency and the yield are improved.

An Internet of Things type regional fire extinguishing security monitoring system includes a regional fire extinguishing device group, a video monitoring group and a host computer centralized monitoring system; the regional fire extinguishing device group is composed of eight upgraded and transformed mine-used regional automatic powder spraying fire extinguishing devices, which are arranged in various electromechanical equipment chambers in coal mines; the video monitoring group is composed of 16 mine-used intrinsically safe cameras, which are arranged in various electromechanical equipment chambers in coal mines, collect video images of electromechanical chambers, and provide video data for fire image recognition. The host computer centralized monitoring system includes image monitoring and equipment parameter monitoring. Image monitoring combined with graphic recognition algorithm can analyze in real time whether a fire occurs in the image, and equipment parameter monitoring helps staff to remotely understand the equipment status. Advantages of the present invention: multi-dimensional monitoring of whether a fire occurs in the coal mine. Once a fire is detected, the fire extinguishing device is quickly turned on to achieve remote centralized monitoring of the fire extinguishing equipment, and to prevent the occurrence of fires in coal mines to the greatest extent.

The utility model provides a turning and spraying synchronous forming cutter bar, and relates to the technical field of turning and thermal spraying. The turning and spraying synchronous forming cutter bar comprises a turning tool assembly, a powder spraying assembly and a powder supply assembly. The turning tool assembly comprises a turning tool blade and a turning tool bar. The turning tool bar is provided with a first end capable of installing the turning tool blade and a second end far away from the turning tool blade. The powder spraying assembly comprises a spraying head arranged at the first end in a swinging mode, a rotating gear arranged on the turning tool bar in a rotating mode and a rotary knob. The spray head is provided with a spherical gear part used for being meshed with the rotating gear. The knob is connected to the rotating gear and used for driving the rotating gear to rotate so as to drive the nozzle to swing. The powder supply assembly comprises a main box body connected to the spray head through a pipeline, a powder conveying pipeline connected to the interior of the main box body and used for bearing powder, a heater connected to the powder conveying pipeline and a powder feeding barrel connected to the main box body and used for supplying powder to the powder conveying pipeline.

The invention relates to a thermal / environmental barrier coating and a preparation method thereof. The coating is of a three-layer structure and sequentially comprises a silicon bonding layer, an ytterbium silicate environment barrier layer and a (RE1xRE21-x) 3TaO7 thermal barrier surface layer from inside to outside. The ytterbium silicate environmental barrier layer is formed by mixing Yb2SiO5 and Yb2Si2O7; a (RE1xRE21-x) 3TaO7 thermal barrier surface layer, wherein x is more than or equal to 0.5 and less than 1; in the preparation method, the high-performance thermal / environmental barrier coating is efficiently prepared by adopting the scheme of synthesizing target powder through a solid-phase reaction, preparing a spraying feed through spray granulation and depositing the coating layer by layer through plasma spraying and utilizing the mechanisms of synergistic improvement of functions of the multi-layer coating, doping modification of rare earth elements and the like. The thermal / environmental barrier coating disclosed by the invention has the advantages of excellent CMAS corrosion resistance, good thermal insulation effect and high layer-to-layer thermal matching, and the service life of the SiCf / SiC composite material can be prolonged under the temperature condition of 1500 DEG C by the thermal / environmental barrier coating.

The invention relates to the field of aluminum alloy door and window enterprises, and discloses an electrostatic powder spraying process and device for aluminum alloy machining, and the electrostatic powder spraying process comprises the following steps: pretreatment: pretreating an aluminum alloy base material, the pretreatment comprises polishing, cleaning and preheating treatment; powder treatment is conducted, specifically, a treatment agent accounting for 5%-10% of the mass of the powder base material is added into the powder base material, high-speed stirring is conducted, spraying powder is obtained, and the treatment agent is composed of a low-Tg polyester resin modifier and nano titanium dioxide; and electrostatic spraying is conducted, specifically, powder spraying is conducted on the surface of the pretreated aluminum alloy base material through electrostatic powder spraying equipment through spraying powder. Powder added with a treating agent is sprayed to an aluminum alloy base material, low-temperature rapid curing is conducted, the curing process of the coating is rapidly completed at the relatively low temperature through stage gradient temperature curing and auxiliary curing, and the curing efficiency and quality are further improved through ultraviolet light and microwave auxiliary curing.

The utility model relates to the technical field of digital printing machines, and discloses a printing machine powder scattering mechanism which comprises a powder storage tank, an air pipe, a powder suction piece and a driving mechanism, a powder spraying head assembly is arranged at the lower end of the powder storage tank, a sleeve is connected to the powder outlet end of the powder spraying head assembly in a sleeved mode, and the driving mechanism is used for discharging shimmering powder in the powder storage tank through the powder spraying head assembly. One end of the air pipe penetrates through the outer wall of the sleeve to be arranged in the sleeve, the other end of the air pipe is used for being connected with an air source to drive the shimmering powder to be sprayed out of the sleeve, the powder suction piece is connected to the lower end of the powder storage tank in a sleeved mode and surrounds the powder spraying head assembly and the sleeve, a powder suction hole is formed in the bottom of the powder suction piece, and a powder discharging opening communicated with the powder suction hole is formed in the side wall of the powder suction piece. The powder discharging port is used for being connected with an air suction device, so that redundant dust is sucked in through the powder suction hole and discharged through the powder discharging port. According to the utility model, the situation that the powder spraying head assembly is blocked in the powder scattering process can be avoided, meanwhile, redundant dust is prevented from blocking the spraying head of the jet printing assembly, and the product quality is ensured.

The tail gas purification device of the epoxy powder spraying line comprises a purification tank, a gas conveying mechanism used for conveying tail gas is arranged on the side wall of the purification tank, a purification mechanism used for purifying the tail gas is arranged at the bottom end of the inner side of the purification tank, and the tail gas purification device further comprises an anti-blocking mechanism located in the middle of the purification mechanism; the anti-blocking mechanism comprises a rotating rod, a plurality of first springs, a brush rod and a driving assembly; according to the scheme, by arranging the anti-blocking mechanism, filtering holes of the filtering plate can be conveniently and automatically scraped and cleaned, so that the filtering holes of the filtering plate are effectively prevented from being blocked due to particulate matter accumulation, and the purposes of effectively facilitating normal filtering and improving the filtering efficiency are achieved; the filter plate can be conveniently inserted, mounted and dismounted, so that the purposes that the filter plate can be conveniently repaired, replaced or maintained, and insoluble particles in tail gas can be conveniently and normally filtered by the filter plate are further achieved.

The invention discloses a powder spraying device and a using method thereof, the powder spraying device is applied to the technical field of powder spraying, a circulating mechanism is arranged, a conveying assembly can be matched with a conveying assembly, an anti-blocking assembly, a spraying assembly and a recycling assembly, and the anti-blocking assembly is driven by the conveying assembly to rotate; the anti-blocking assembly can drive the spraying assembly to adjust the spraying direction, air at the recycling assembly is pumped into the anti-blocking assembly through the air supply assembly, and when the conveying assembly conveys powder to the anti-blocking assembly, the air supply assembly conveys the flowing air into the anti-blocking assembly; the anti-blocking assembly can scatter caked powder along with flowing air and convey the powder to the spraying assembly, the spraying assembly can spray the powder to the surface of a workpiece needing to be sprayed, the recycling assembly recycles the powder splashed during spraying, and the effect of recycling and spraying the powder can be achieved; and the flexibility of powder spraying is improved.

Powder spraying equipment for aluminum material production relates to the technical field of aluminum material powder spraying equipment and comprises a spraying box with an opening in the top, a box door is hinged to the opening end of the spraying box, a fixed U-shaped plate fixedly arranged and a plurality of sliding U-shaped plates horizontally and movably arranged are horizontally arranged in the spraying box side by side, and a plurality of inserting grooves are formed in the ends of the sliding U-shaped plates. A plurality of insertion rods are fixedly arranged at the end of the fixed U-shaped plate and the end of the sliding U-shaped plate, one end of each insertion rod extends into an insertion groove of the sliding U-shaped plate adjacent to the insertion rod and is provided with a detachable limiting ring, and the top of the fixed U-shaped plate and the top of the sliding U-shaped plate are each provided with a sliding L-shaped plate arranged in a horizontal sliding mode and a swinging L-shaped plate arranged in a swinging mode; a positioning plate is rotationally arranged at the end of the swing L-shaped plate along the horizontal line, a plurality of first receding grooves are formed in the opposite ends of the positioning plate, and a plurality of second receding grooves are formed in the top and the bottom of the positioning plate. The problem that an existing powder spraying device is low in metal powder adhesion rate is solved; and the material taking and placing procedures are tedious.

The invention relates to the technical field of mesona chinensis powder production and processing, and discloses a mesona chinensis powder spray drying device and a using method thereof.The mesona chinensis powder spray drying device comprises an atomization drying box, a top plate is fixedly installed on the top wall face of the atomization drying box, a heat supply pipe is arranged above the top plate, and the heat supply pipe penetrates through the top plate and communicates with the interior of a cavity of the atomization drying box; comprising a spraying device, the spraying device comprises a first flow guide pipe, and a second flow guide pipe is arranged above the first flow guide pipe; comprising a heat conduction device, the heat conduction device comprises a plurality of heating pipes, and the plurality of heating pipes are L-shaped; comprising a wall scraping device, the wall scraping device comprises a lifting ring, and a plurality of scraping plates are fixedly installed on the upper side wall face and the lower side wall face of the lifting ring in an annular array mode. The mesona chinensis concentrated solution can be sprayed out and atomized through the spraying device, then the mesona chinensis concentrated solution is evaporated and dried through heat of the heat conduction device to form powder, and residues on the inner side wall of the atomization drying box cavity can be scraped off through the wall scraping device.

The utility model discloses a powder diffusion spraying device for the inner wall of a pipe, and relates to the technical field of powder spraying, the device comprises a self-rotating powder diffusion spray head, a limiting assembly and a flow guide cone, the self-rotating powder diffusion spray head comprises a spray head body, a plurality of self-rotating blades and a plurality of auxiliary diffusion blades, the multiple self-rotating type blades and the multiple auxiliary diffusion blades are arranged on the spray head body side by side at intervals, each auxiliary diffusion blade is arranged between two self-rotating type blades, and the length of each auxiliary diffusion blade is half or two thirds of the length of each self-rotating type blade. The self-rotating type blades and the auxiliary diffusion blades are continuous curved surfaces which are gradually bent in the direction deviating from the preset rotating direction. The limiting assembly comprises a limiting shaft and a first fastener; the first fastening piece, the spray head body and the flow guide cone are sequentially arranged on the limiting shaft in a sleeving mode. The thickness uniformity value of the coating on the inner wall of the pipe during powder spraying operation can be effectively improved, and the overall spraying quality of the inner wall of the pipe is improved.

The invention discloses a powder spraying pile composite roadbed deformation prediction method, and particularly relates to the field of roadbed settlement prediction, comprising the following steps: in an edge calculation node, respectively constructing an underground water level change event, a construction stage event, a soil consolidation stage event and a traffic load cycle event into independent event time chains; the event time chain is recorded by taking the occurrence moment of the event, the duration of the event and the interval duration between the events as a time step unit; and performing splitting operation on the time step units of each event time chain, and forming a time granularity matrix according to the duration difference between the time step units. A plurality of types of discrete events such as water level, construction, consolidation, traffic load and the like are uniformly disassembled into time step length units, and a time granularity matrix and a time dislocation vector are constructed, so that the rhythm difference and dislocation relationship of the events on different time scales can be quantitatively expressed; and solving the transition of the settlement stage by taking the result as the observation input of the variational Markov model.

The invention relates to the technical field related to intelligent production control, in particular to a powder spraying method and system for the surface of a slender pipe and a medium, and the method comprises the steps that the preprocessed slender pipe is placed on a workbench containing multiple assemblies, electrostatic spraying is conducted through a spray gun, powder feeding adjustment is conducted, the angle of a flow guide groove is dynamically adjusted according to parameter combination, and spraying uniformity is controlled in combination with rotating speed induction. The technical problems that dynamic parameter matching mechanisms for different pipe diameters and wall thicknesses are lacked, airflow changes in the inner space of a slender pipe are difficult to cope with, and uneven distribution of powder in the pipe is likely to be caused are solved, the coating thickness deviation is controlled by associating a spray gun mechanism with a pipe rotating assembly, and the spiral angle of a flow guide groove is dynamically adjusted along with friction torque; and the piezoelectric centrifugal switch is used for detecting the rotating speed fluctuation in real time, the spray gun displacement compensation and the powder feeding amount adjustment are automatically triggered to enable the powder to be distributed in the pipe, and the machining efficiency is improved on the basis that the powder spraying quality of the surface of the long and thin pipe is guaranteed.

A coating powder spraying device is provided with a powder spraying box and a powder spraying pipeline, a powder conveying pipeline is arranged at the top of the powder spraying box, powder coating is conveyed into the powder spraying box through the powder conveying pipeline, a powder spraying component is arranged at the top of the powder spraying box and is a powder spraying draught fan, a flow dividing component is arranged on the powder spraying draught fan, and the flow dividing component is communicated with the powder spraying box. Powder needing to be sprayed is guided into the powder spraying box, then air blowing and powder spraying are conducted on the powder in the powder spraying box through the draught fan, the powder spraying component is arranged on the powder spraying draught fan, the air quantity can be uniform and comprehensive through the powder spraying component, and reasonable powder blowing operation can be conducted on the powder in the powder spraying box; and the powder spraying operation of the powder spraying device is more convenient and efficient.

The invention discloses a feeding conveying device for pipe fitting powder spraying and a using method, and belongs to the technical field of pipe fitting powder spraying. A feeding conveying device for pipe fitting powder spraying comprises a rack and further comprises a feeding plate, the feeding plate is obliquely arranged on the rack and used for stacking pipe bodies to be subjected to powder spraying, and the lower end of the feeding plate is provided with a blocking base movably abutting against the pipe bodies; the separating assembly is arranged on the feeding plate and used for separating the pipe bodies stacked on the feeding plate; the feeding assembly is arranged at the tail end of the feeding plate and used for conveying a pipe body to be sprayed with powder to the spraying gun; the transferring assembly is arranged at the tail end of the feeding plate and used for transferring the first pipe body at the tail end of the feeding plate to the feeding assembly. Through dynamic separation, gear synchronous transmission and spiral driving rotation, efficient, accurate and reliable operation of the pipe fitting powder spraying and feeding process is achieved, and an advanced automatic solution is provided for the surface treatment industry.

The invention discloses an experimental device and an experimental method for gas / dust explosion flame-shock wave superposition coupling effect and combustible medium explosion transition induced by gas / dust explosion flame-shock wave superposition coupling effect under multi-parameter influence. Comprising a visual explosion system, a gas leakage diffusion system, a powder leakage diffusion system, an ignition system, a gas supply system, a powder spraying system, a discharge system, a displacement regulation and control system, a data acquisition system, a synchronous controller and a program control and data acquisition system. According to the experimental device and the experimental method for the gas / dust burning flame-shock wave superposition coupling effect under the influence of the multiple parameters and the induced combustible medium burning explosion transition thereof, the action processes of mutual impact, superposition, coupling and the like of detonation / detonation head-on flame-shock wave under the multiple working condition parameters can be realized; and the experimental study on the process of inducing the leakage diffusion combustible medium explosion transition and the critical condition thereof fills the technical blank of the study on the explosion flame-shock wave coupling effect process and the secondary disaster evolution mechanism induced under the influence of multiple parameters.

The utility model provides a tower crane standard section piece loading and unloading tool for a powder coating line, which relates to the technical field of tower crane standard section piece powder spraying and comprises a base and a plurality of supporting rods. The two groups of supporting rods are respectively and vertically arranged on two opposite side edges of the base, and the supporting rods on the two side edges are uniformly arranged at intervals and are mutually aligned; a main chord member of the tower crane standard section piece is erected on the two side edges of the base and abuts against the bottoms of the two supporting rods on the two side edges, and the two supporting rods support the two connecting rods respectively so as to position the tower crane standard section piece. According to the powder coating line, the problems of low coating efficiency and poor coating quality of the powder coating line on the standard section piece of the tower crane in the prior art are solved. According to the utility model, the coating quality is obviously improved, and the labor intensity and the safety risk of operators are reduced.

The invention discloses a ceramic dry granulation unit which comprises a granulation machine body and a first transverse plate fixedly connected with the outer wall of the middle of the granulation machine body, and the bottom end and the top end of the granulation machine body are provided with a cleaning mechanism and a conveying mechanism correspondingly. Meanwhile, a second draught fan blows air into the discharging barrel, the ceramic powder can be sprayed out of the distributor more quickly and evenly, at the moment, an external water supply device injects water into a plurality of water pipes, the water is sprayed out through an atomization spraying head, and the ceramic powder sprayed out of the distributor is wetted; one part of the wet ceramic powder can directly fall onto the rotating disc through the opening in the bottom end of the granulator body, and the other part of the wet ceramic powder can fall onto the inner wall of the bottom end of the granulator body, and at the moment, the first fan blows air into the inner cavity of the bottom end of the granulator body, so that the wet ceramic powder falling onto the inner wall of the bottom end of the granulator body is blown up; therefore, the material falls onto the rotating disc through the self weight of the material.

The utility model provides a full-automatic powder spraying room capable of rapidly switching colors and types, which comprises a powder spraying room and a conveying assembly arranged in the powder spraying room and used for conveying workpieces, and the powder spraying room is divided into a color powder spraying area, an operation area and a metal powder spraying area along the conveying direction of the conveying assembly. Two powder spraying mechanisms arranged in a mirror symmetry mode are arranged in the color powder spraying area, a starting controller is arranged in the operation area, and the starting controller is connected with the conveying assembly and the powder spraying mechanisms. The powder spraying room is small in occupied area, workpieces sequentially enter the color powder spraying area and the metal powder spraying area through the conveying assembly to be colored and decorated, the time for changing lines and colors is saved, color crossing is not likely to happen, the workpiece spraying efficiency is improved, and the equipment utilization rate is increased. And a powder spraying area and an employee operation area are isolated, so that dust pollution can be reduced, and color powder and metal powder can be conveniently distinguished and recycled while the health of employees is protected.

The invention provides a plastic particle feeding device, and relates to the field of plastic particles. The plastic particle feeding device comprises a hopper arranged at a feeding outlet of an extruder, a quantitative feeding mechanism for rotationally and quantitatively feeding plastic raw materials is arranged in the hopper, a vibration mechanism for vertically vibrating to realize blockage prevention is arranged in the hopper, and the quantitative feeding mechanism moves vertically by rotationally extruding the vibration mechanism. According to the plastic particle feeding device, plastic fragments are fed into the hopper, corresponding batching reagents are placed in the powder storage cavity and the liquid reagent storage unit, the quantitative feeding mechanism works, the liquid spraying mechanism sprays out a proper amount of liquid to wet the surfaces of the plastic fragments, the powder spraying mechanism sprays out a proper amount of powder ingredients, and the plastic particles are fed into the powder storage cavity and the liquid reagent storage unit. Therefore, the powder reagent can be fully attached to the surfaces of the plastic fragments, and the problem of uneven mixing caused by layering of ingredients and the plastic fragments during existing plastic particle processing can be solved.

The invention provides powder spraying equipment and method for a vacuum magnesium smelting furnace. The method comprises the steps that inert gas in an inert gas storage device is conveyed into a silicon powder bin and a calcined white powder bin through an inert gas conveying pipeline assembly; when the air pressure in the silicon powder bin and the air pressure in the calcined white powder bin reach the preset air pressure, silicon powder in the silicon powder bin and calcined white powder in the calcined white powder bin are conveyed into a spray gun through a powder spraying pipeline assembly; the inert gas is used as a carrier, and the silicon powder and the calcined white powder are sprayed into a molten pool in the vacuum magnesium smelting furnace through the spray gun. By utilizing the method, the problems of low mechanization degree, low per unit yield, high energy consumption and serious pollution in the existing magnesium smelting method can be solved.