1893 results about "Air knife" patented technology

The invention provides an intelligent control method and system for the zinc layer thickness of continuous hot galvanizing, and relates to the technical field of data processing, and the method comprises the steps: collecting the historical production data of a production line, and constructing a zinc layer thickness and air knife pressure prediction model; the two models are trained according to historical data, and a setting table of the distance and height of the air knife is obtained through statistical analysis; acquiring real-time production data, determining air knife parameters according to the setting table, and inputting the air knife parameters into the trained air knife pressure prediction model to obtain an air knife pressure set value; and inputting the real-time data and the air knife set value into the zinc layer thickness prediction model to obtain a first zinc layer thickness prediction value. If the predicted value meets a preset standard, current air knife parameters are stored, otherwise, a feedback adjustment mechanism is used for adjusting air knife pressure, and a second zinc layer thickness predicted value is calculated; if the adjusted predicted value meets the requirement, air knife parameters are stored; if the requirement is not met, the adjusting step is repeated; and intelligent control is carried out through the stored air knife parameters.

The invention discloses pretreatment equipment for LCD (liquid crystal display) glass substrate processing, which comprises a roller conveyor, a cleaning device and a drying device, the cleaning mechanism comprises a spraying pipe arranged in the isolation hood, and air knives are arranged on the two sides of the spraying pipe in an inwards inclined mode respectively; the water collecting and draining tank is arranged on the lower side of the roller conveyor on the lower side of the isolation hood; the demisting mechanism comprises an adsorption cotton roller rotationally mounted on the inner side of the air knife, and the air knife is provided with a guide groove for extruding and scraping the adsorption cotton roller; the drying device comprises a drying chamber; the air inlet mechanism comprises an air blower, the air inlet end of the air blower is connected to the corresponding air distribution pipe, a connecting pipe is rotationally installed in the air distribution pipe, a cylindrical filter element is fixedly connected to the connecting pipe, and an impeller of the air blower and the connecting pipe are in transmission connection to the output shaft ends of the corresponding driving motors respectively. The LCD glass substrate cleaning and drying device can effectively ensure the cleaning effect and the drying effect on the LCD glass substrate.

The invention relates to a high-uniformity slit coating air knife system, a control method and a coating machine. The high-uniformity slit coating air knife system comprises an air knife lifting module which is mounted on the inner side of an air knife fixing frame and is used for lifting an air knife main body on the inner side; the air knife angle adjusting module is mounted on the inner side of the air knife lifting module and used for adjusting the angle of the air knife body on the inner side; a combined type air cavity structure is formed in the air knife main body; the air knife body is sequentially divided into three independent temperature control air areas in the left-right direction. The dynamic wind pressure adjusting system is used for feeding back and adjusting wind speed based on real-time film thickness monitoring data; an air pressure and temperature linked airflow temperature coupling control system; and the air speed and air pressure fine adjustment mechanisms are mounted on the air knife main body. The thickness uniformity of the coating is improved to + / -0.5 [mu] m; the drying energy consumption is reduced by 50% (compared with flash evaporation); the takt is increased from original 5 minutes to 30 seconds; the maximum 1.2 m breadth coating is supported, and the tail end air pressure difference is smaller than 1%.

The invention relates to the technical field of water jet looms, and discloses a drying structure for a water jet loom, comprising: a waste water tank, a triangular mesh plate and a drying box, wherein a triangular mesh plate is arranged on the top of the waste water tank, an electric heating roller is arranged on the top of the triangular mesh plate, fixed frames are fixed to the outer walls of both sides of the triangular mesh plate, U-shaped brackets are arranged at both ends of the fixed frame, a fixed guide column is arranged in the middle of the U-shaped bracket, a slider is arranged on the outer side of the fixed guide column, and a spring is arranged at the bottom of the slider. The entire drying structure of the invention ensures the rapid discharge of squeezed water through the inclined design of the squeeze roller and the triangular mesh plate, and the blowing of the wind knife can further discharge the squeezed water, and at the same time, the hot air in the drying box is led out through the air outlet pipe to preheat the cloth to be dried, which can save energy and improve the energy saving performance of the entire drying structure for the water jet loom.

The invention discloses a battery pole piece laser die cutting and lamination integrated device and method, the device comprises a main controller and a machine table, two die cutting mechanisms are oppositely arranged on the two sides of the machine table respectively, and the two die cutting mechanisms are used for cutting a positive pole piece material belt and a negative pole piece material belt respectively to form a positive pole piece and a negative pole piece; according to the device, a plurality of working procedures such as die cutting and lamination are integrated through an integrated design, and accurate positions and stable tension of the pole pieces in the whole processing process are ensured through a tension swing roller, a process deviation rectifying assembly and a floating roller assembly; deformation or breakage caused by loosening or excessive pulling of the pole piece winding tape in the conveying process is avoided; the edge of the pole piece is guaranteed to be flat and smooth through the laser cutting assembly, the flatness and surface cleanliness of the pole piece are guaranteed through the reinforcing rib assembly and the high-speed air knife assembly respectively, the quality of the pole piece in the machining process is guaranteed to a certain degree, and the production efficiency is improved.

The invention relates to the technical field of steel plate hot-dip production, and discloses an intelligent scheduling system for a steel plate hot-dip production process. The system comprises a working condition sensing module which is used for continuously collecting steel belt inlet temperature, zinc liquid component concentration fluctuation data, air knife pressure time sequence parameters and roller system operation state signals of a galvanizing pot area; the feature extraction module receives the working condition data flow, analyzes the steel strip surface temperature field distribution features and the zinc liquid viscosity change rule, and generates a process feature spectrum; the parameter optimization module dynamically adjusts membership function parameters and rule base weight coefficients of the fuzzy reinforcement learning controller according to the process characteristic spectrum, and outputs an optimized plating layer control parameter set; the self-adaptive plating layer control module generates a plating layer thickness control instruction based on the real-time zinc liquid temperature parameter and the optimized plating layer control rule set; and the dynamic roller system scheduling module realizes global cooperative control of the roller system speed based on the instruction. The system can realize intelligent scheduling of the steel plate hot-dip production process.

The invention discloses a polypropylene film for a film capacitor, the polypropylene film is composed of polypropylene and a cyclic olefin polymer, a plurality of gaps are distributed in the film, the gaps are approximately annular on the cross section of the film, and the inner diameter of the approximately annular gaps is 20-120nm. The invention also provides a preparation method of the polypropylene film, which comprises the following specific steps: putting the polypropylene and the cyclic olefin polymer into an extruder, heating and melting; the melt is extruded through a T-shaped die head and attached to a piece casting roller through an air knife for piece casting, and the temperature of the piece casting roller is 85-95 DEG C; the method comprises the following steps: preheating a cast sheet, longitudinally stretching at the stretching rate of 4-7 times and at the temperature of 135-150 DEG C, preheating the longitudinally stretched sheet at the temperature of 145-160 DEG C, transversely stretching at the stretching rate of 7-10 times and at the stretching temperature of 165-180 DEG C, and then entering a shaping area at the temperature of 168 DEG C; and carrying out corona treatment, rolling, curing and slitting on the heat-set film to obtain the product. The polypropylene film has good high temperature resistance and high pressure resistance, and is suitable for the field of capacitors.

The invention discloses automatic tin plating equipment for chip pins, and relates to the field of semiconductors, the automatic tin plating equipment comprises a base, the top surface of the base is sequentially provided with a soldering flux placing groove, a cleaning groove and a tin plating groove from front to back; an electric cabinet; a Y-axis linear motion module and a Z-axis linear motion module are arranged at the tops of the supports; a clamping jaw; a guide plate; an air knife is detachably assembled at the bottom of the Z-axis linear motion module, the two ends of the top of the air knife are each connected with an elastic telescopic hose, and the other end of each elastic telescopic hose communicates with the electric cabinet. According to the tin plating device, heat dissipation airflow generated by a heat dissipation fan of the electric control box is collected and discharged through an elastic telescopic hose and an air knife, then tin liquid and tin slag left on tinned chips and the upper surfaces of the clamping jaws are blown off, and meanwhile, a flow guide plate is used for carrying the tin liquid and the tin slag; and unnecessary pollution caused by dripping on the tinning equipment is avoided, and redundant residual tin water and tin slag are blown off, so that the cleaning effect of the cleaning tank is facilitated.

The utility model relates to a hot air dryer with an adjustable air knife, and aims to solve the problems that the size of an air outlet of a current air knife is fixed, so that an air outlet air knife matched with materials needs to be replaced in order to improve the drying efficiency of different materials, the air knife needs to be replaced when the different materials are dried, and time and labor are wasted. The air knife comprises an air knife body, the middle of the top end of the air knife body communicates with a hot air inlet pipe, triangular baffles are fixedly connected to the two sides of one end of an air outlet of the air knife body correspondingly, adjusting grooves are formed in the two sides of the air knife body correspondingly, and adjusting blocks are slidably connected into the two adjusting grooves correspondingly; the air knife has the advantages that the width and the length of the air outlet of the air knife body can be conveniently adjusted, air knives matched with materials do not need to be replaced when different materials are dried, time and labor are saved, and the use cost of the air knives is reduced.

The invention discloses an air knife device for a laser processing head and the laser processing head. The air knife device comprises a mounting structure and at least two layers of air knife structures, wherein the mounting structure is used for being mounted and connected with the spraying end of the laser head, and the at least two layers of air knife structures are mounted on the mounting structure; the at least two layers of air knife mechanisms comprise a first air knife structure and a second air knife structure, the laser head, the first air knife structure and the second air knife structure are arranged at intervals in the first direction, and laser beams emitted by the laser head extend in the first direction; a first spraying channel is arranged in the first air knife structure and used for spraying out first airflow in the second direction, and a second spraying channel is arranged in the second air knife structure and used for spraying out second airflow in the second direction; the first air flow is subsonic air flow or supersonic air flow, the second air flow is supersonic air flow, most welding slag can be blown away through the second air flow in the supersonic state, and the slag removal and dust removal capacity of the second air flow is good.

The utility model provides a hot galvanizing strip steel edge heating device, and relates to the technical field of hot galvanizing strip steel production, the hot galvanizing strip steel edge heating device comprises a shell, strip steel, an air supply assembly and two air knives, the strip steel penetrates through the shell, and the left side and the right side of the strip steel are each provided with a heating assembly, a first adjusting assembly and a second adjusting assembly; by arranging the heating assembly, the cooling speed of the strip steel edge coating can be slowed down, so that the phenomenon that the strip steel edge coating is too thick is prevented, the strip steel quality is guaranteed, the heating assembly can heat the strip steel edge from the upper side and the lower side at the same time, the heating uniformity is improved, and the heating effect is improved; by arranging the first adjusting assembly, the distance between the first air outlet pipe and the second air outlet pipe can be adjusted according to actual use requirements so as to adapt to strip steel of different thicknesses, and the use stability is improved; and by arranging the second adjusting assembly, the distance between the two heating assemblies located on the left side and the right side of the strip steel can be adjusted according to actual use requirements so as to adapt to the strip steel with different widths, and the use stability is improved.

The invention provides a high-transmittance ITO conductive glass preparation process, and belongs to the technical field of conductive glass preparation, and the high-transmittance ITO conductive glass preparation process comprises the following steps: S1, cleaning a substrate: carrying out ultra-clean cleaning on a glass substrate to remove oil stains and impurities on the surface, and blow-drying by adopting a high-pressure air knife; s2, coating pretreatment: feeding the cleaned glass substrate into a coating chamber, and carrying out pretreatment before coating; s3, forming a SiO2 film: adopting a medium-frequency coating process, obtaining the SiO2 film through medium-frequency reactive sputtering of a Si target, reducing the quantity of electric charges accumulated on the surface of the SiO2 film, and reducing the probability of abnormal discharge; s4, forming an ITO film: continuously coating the SiO2 film to form an ITO conductive film; and S5, post-treatment: carrying out annealing and cleaning post-treatment on the coated glass so as to improve the stability and adhesive force of the film layer. According to the invention, a traditional radio frequency sputtering SiO2 film forming process is replaced by an intermediate frequency coating process, so that the quantity of electric charges accumulated on the surface of the SiO2 film is reduced, the probability of abnormal discharge is reduced, and the product quality is effectively ensured.

The utility model discloses a cleaner of a conveyor and the conveyor, the cleaner comprises an air knife cleaning structure, one end of the air knife cleaning structure is provided with an air outlet; the knife edge cleaning structure is arranged at the air outlet of the air knife cleaning structure and used for cleaning thread scraps at the air outlet, and the knife edge cleaning structure comprises a cleaning part which is movably arranged at the air outlet of the cleaner; and the driving unit is in transmission connection with the sweeping piece and used for driving the sweeping piece to move and sweep the air outlet. According to the cleaner, the air knife cleaning structure is used for generating an air curtain with strong impact force and shearing force, so that residual materials on a conveying belt of the conveyor are effectively cleaned, meanwhile, a fixed cleaning piece is used for timely, effectively and comprehensively cleaning an air outlet, and the residual materials are prevented from blocking the air outlet and affecting the operation efficiency of equipment.

The glass fiber self-adhesive tape gluing mechanism is characterized in that bearing seats are symmetrically arranged on the upper surface of one end of a glue groove and located on the two sides, the two ends of a gluing roller are connected with the bearing seats in a matched mode respectively, the lower portion of the gluing roller is arranged in the glue groove, and vertical plates are arranged on the two sides of the upper surface of the other end of the glue groove; the two vertical plates are arranged on the upper surface of the glue groove, the ends, close to the glue spreading roller, of the vertical plates are connected with the baffle, a scraper which is obliquely arranged is arranged between the vertical plates, an air knife is arranged between the vertical plates and located above the scraper, and an air outlet of the air knife faces the scraper. According to the glass fiber self-adhesive tape, the scraper is used for scraping off redundant adhesive on the lower surface of the glass fiber gridding cloth, meanwhile, through cooperation of the air knife, on one hand, hole blowing is achieved, the redundant adhesive is blown off, and on the other hand, the adhesive accumulated at the end of the scraper is blown off along the scraper, so that the quality of the glass fiber self-adhesive tape is guaranteed.

The utility model relates to a cleaning type bucket elevator in the field of elevator equipment. The cleaning type bucket elevator comprises an engine base, an elevator body, a driving chain wheel, a driven chain wheel, an elevating chain and an elevating hopper, a cleaning cabin is arranged below the discharge port, a vibrating roller and an air knife are arranged in the cleaning cabin, a plurality of flexible vibrating hammers are spirally and uniformly distributed on the roller surface of the vibrating roller, and the flexible vibrating hammers can respectively form alternate knocking on the bottom of the lifting hopper and the bottom of the discharge port in the rotating process; the air knife is mounted at the bottom of the cleaning cabin, an air outlet of the air knife is obliquely upwards close to the outer edge of the lifting hopper, and the air knife does not interfere with each lifting hopper and the flexible rapping hammer; and a driving motor is arranged above the machine body and is in transmission connection with the driving chain wheel and the vibrating roller respectively. The cleaning type bucket elevator has a more perfect self-cleaning function, residual powder materials on the inner wall of the discharging port of the elevator and the inner wall of each lifting hopper can be cleaned at the same time, and the lifting and conveying efficiency of the bucket elevator can be guaranteed.

The invention discloses an internal-cooling-based high-frequency coupling window for a high-power cyclotron. The internal-cooling-based high-frequency coupling window is characterized in that an air knife structure is arranged at the atmosphere end of the internal-cooling-based high-frequency coupling window; two groups of conductor choke units with different lengths are arranged on two sides of a ceramic chip of the high-frequency coupling window based on internal cooling, and the two groups of conductor choke units with different lengths are equivalent to two groups of inductors and are used for forming a double-filter circuit of the high-frequency coupling window; a ceramic coating film is arranged on one side of the ceramic sheet of the high-frequency coupling window; according to the air knife structure, more heat on the surface of the ceramic chip is taken away through compressed air; on one hand, the filter unit and the conductor choke unit form a filter circuit of a high-frequency coupling window atmosphere end; according to the invention, the air knife structure is ingeniously utilized, and enhanced cooling is carried out on the ceramic wafer of the coupling window structure; the inductance value of the coupling window is adjusted by using the conductor choke unit, the standing-wave ratio coefficient of the coupling window is reduced, the surface temperature of the ceramic chip is reduced, and the risk of explosion of the coupling window is reduced.

The utility model discloses an automatic tin soldering machine for a relay, which comprises a rack, and the rack is provided with a feeding mechanism, a tin soldering mechanism, a tin soldering mechanism, a tin soldering mechanism, a tin soldering mechanism and a tin soldering mechanism, the liquid pumping mechanism comprises a supply container and a peristaltic pump, the supply container is used for containing scaling powder, and the peristaltic pump is connected with the supply container to pump the scaling powder into the supply container; the tin furnace mechanism comprises a tin cup and a tin bath, the tin cup is located in the tin bath and connected with a first lifting air cylinder, and a liquid level detection probe is arranged above the tin bath; the washing mechanism comprises a cleaning water tank; the cooling and blow-drying device comprises an air knife which is connected with an air blower; the transfer mechanical arm comprises a portal frame, the portal frame is located above the machine frame, a three-axis moving module and a clamping jaw are arranged on the portal frame, the clamping jaw is installed on the three-axis moving module, and automatic high-precision soldering tin feeding can be achieved.

The present invention discloses a technical field of coil leveling devices, specifically a coil leveling device for a laser cutting machine, comprising a roller support, the upper end of the roller support inner cavity is equidistantly connected to a plurality of lower rollers, the upper end of the roller support is fixedly connected to a concave support seat, a plate body is flatly laid on the lower roller, a plurality of hydraulic cylinders are symmetrically fixedly installed on the upper end of the concave support seat, the inner rods of the plurality of hydraulic cylinders pass downward through the upper end of the concave support seat and are fixedly connected to a lifting and adjusting plate. The present invention has the following beneficial effects: when working, the plate body moves from back to front along the upper end of the lower roller, and the plate body passes through the bottom of the hot air knife, the heating roller, the leveling roller, and the edge pressing tube in turn; the plate body is heated by the hot air knife and the heating roller in the heating mechanism, especially the edge of the plate body is heated emphatically, and the heated plate body is leveled by the leveling roller.

The utility model provides an air knife mechanism for a coating machine, which comprises a sliding table, an air knife and an adjusting component, two ends of the air knife are connected with the sliding table, and the adjusting component is connected to one side of the sliding table; a first control part is arranged on the sliding table and can drive the air knife to move on the sliding table; the adjusting assembly comprises a second control part and a transmission shaft, one end of the transmission shaft is connected with the second control part, the other end of the transmission shaft is connected with the sliding table, and the second control part can drive the air knife to move through the transmission shaft. According to the air knife mechanism provided by the utility model, the distance and the angle of the air knife are respectively adjusted by arranging the first control part and the second control part, so that the air knife mechanism can adapt to the coating requirements of various different perovskite solutions, and the compatibility is higher; and in addition, the device can adapt to different coating thicknesses, the drying and crystallizing effect on the thin film is better, and defective products are reduced.

The invention discloses a camera protection device with an air knife, which relates to the technical field of industrial camera protection devices and comprises a shell assembly arranged outside a camera. The shell assembly is of a frame-shaped structure, and the camera is connected with the inner wall of the frame-shaped structure; the frame-shaped structure comprises a top plate, and a window for the camera to shoot is formed in the top plate; an annular air knife assembly is arranged around the window, the annular air knife assembly is arranged between the top plate and the camera, and the annular air knife assembly can achieve annular air knife air supply. The camera protection device provided by the invention is more compact in structure, and meets the carrying requirements of small-space and small-load motion structures, especially automatic loading and unloading carrying manipulators and other motion mechanisms; a uniform and stable isolation layer can be provided, water, oil mist, dust and other foreign matters can be isolated without dead angles, and the camera identification precision is not influenced by the foreign matters.

The utility model provides an auxiliary dust removal mechanism for a pipeline, which comprises an air knife, a plurality of air cabins which are annularly distributed are arranged in the air knife, and each air cabin is provided with an air inlet end and an air outlet end; the air adjusting piece is movably connected with the air knife and is used for adjusting the opening degree of the air outlet end; and the advancing rollers are distributed on the outer wall of the air knife and can roll in the axial direction of the air knife. According to the pipeline auxiliary dust removal mechanism and the using method thereof, dead-corner-free dust removal in the telescopic corrugated pipeline can be achieved, the air volume, the air speed and the outer contour size can be flexibly adjusted, the pipeline auxiliary dust removal mechanism adapts to different dust removal working conditions, the dust removal efficiency and cleanliness are greatly improved, and meanwhile the labor intensity of manual dust removal is reduced.

The utility model provides a laminated battery pole piece dust removal device and dust removal equipment thereof. The first frame body and the second frame body of the device are relatively movably arranged on the rack, so that a relatively sealed dust removal cavity is formed when the first frame body and the second frame body abut against each other, and the pole piece is wrapped and sealed in the dust removal cavity; the first brush assembly is movably arranged on the first frame body, and the first ion air knife assembly is arranged above the first brush assembly; the second brush assembly is movably arranged on the second frame body, and the second ion air knife assembly is arranged above the second brush assembly; the negative pressure extraction assembly is arranged on the first frame body and / or the second frame body in a communicating mode and used for extracting dust in the dust removal cavity. According to the device, the phenomenon that large-area dust escapes outwards is reduced, the pole pieces can flexibly enter and exit, the problem of secondary dust pollution of the pole pieces is avoided, and the cleaning and dust removing effects on the pole pieces are improved through the movable first brush assembly and the movable second brush assembly.

The utility model relates to the field of perovskite cell related equipment, and provides a passivated perovskite film coating device and a perovskite cell preparation system. The passivated perovskite film coating device comprises a base table, an air knife mechanism, a nitrogen cylinder and an additive atomizer, a sliding mechanism is arranged on the base table, the air knife mechanism is slidably installed on the base table through the sliding mechanism, the nitrogen cylinder is provided with a nitrogen pipe, the additive atomizer is provided with an additive air pipe, and the top of the air knife mechanism is connected with a mixed air inlet pipe. An air outlet of the nitrogen pipe and an air outlet of the additive gas pipe are respectively communicated with the mixed gas inlet pipe. According to the passivated perovskite film coating device, the additive atomizer is used for atomizing a solution in which an additive is dissolved so that the solution can become gas, nitrogen and the atomized gas of the additive are mixed and then discharged from the air knife lip, and in the process that the air knife mechanism conducts blowing treatment on a liquid film, the liquid film can be blown out through the air knife. And doping of the additive to the perovskite or passivation treatment of the passivator to the surface of the perovskite is completed.

The invention discloses a novel laser thermal spraying gun, and belongs to the technical field of laser additive manufacturing, the novel laser thermal spraying gun comprises a connecting seat, an air knife assembly, an inner nozzle, an outer nozzle, a cooling sleeve cover plate and a cooling sleeve, the outer nozzle comprises a powder feeding body and a Laval pipe, and a diffusion hole is formed in the Laval pipe; the Rafael nozzle accelerates air flow through a gradually-shrinking-gradually-expanding structure, a high-speed and high-temperature jet flow environment is formed, powder is fully preheated and evenly dispersed before reaching a base body, the Rafael pipe and laser spraying are combined, the advantages of the laser cladding technology and the thermal spraying technology are combined, the acceleration effect of Rafael air flow is overlaid, and the thermal spraying effect of the laser cladding technology and the thermal spraying technology is improved. Under the action of high-temperature and high-pressure air flow, the powder is in full contact with a laser heat source in a flying distance long enough through a Laval nozzle, so that the powder and a matrix form metallurgical bonding in a molten state, the bonding strength can be 2-3 times that of traditional thermal spraying, and the powder is suitable for the limited space environment of water erosion protection and repair of the steam turbine blade.

The present invention discloses a gas infrared radiation and hot air dual-mode drying furnace for drying printing inks, which comprises a furnace body housing. Inside the furnace body housing, there are a heating chamber and two machine position chambers. The two machine position chambers are symmetrically distributed at the top and bottom of the heating chamber. An inlet and an outlet penetrating through the furnace body housing are respectively arranged on both sides of the middle of the heating chamber. The present invention heats printing paper through two modes of gas infrared radiation and hot air. Due to the physical properties that infrared rays can penetrate and objects can actively absorb the heat of infrared rays, the ink and the interior of the paper can be quickly heated. In the later stage, the high-temperature flue gas waste gas generated by the front-end gas infrared radiation burner is used, and is guided to the air knife for drying through the hot air circulation mode by a blower and a forced air blower. The gas consumption of the burner is lower, and the heating speed is faster, further reducing the gas energy consumption. Under the condition of the same gas consumption, the speed of the printing press is significantly increased, meeting the requirement of lower gas energy consumption of existing conventional gas burners.

The invention discloses a screen display glass edge grinding device which comprises a grinding seat and grinding wheels, a glass inlet is formed in the grinding seat, the grinding seat comprises a seat body, an air knife seat body and a water knife seat body which form a grinding cavity, and the grinding wheels are vertically inserted into the grinding cavity. The air knife seat body comprises an upper air knife and a lower air knife which blow the grinding wheel and are distributed in an arc shape around the circle center of the grinding wheel; the water jet cutter seat body comprises a water jet cutter and a waste collecting module. On one hand, the closed grinding section is formed between the upper and lower arc-shaped air knives and the grinding wheel, fluid is flushed out through the water jet cutter, waste generated by grinding is flushed out of the grinding section along with rotation of the grinding wheel, the probability that fine dust escapes outwards and is secondarily attached to the surface of glass is effectively reduced, and the collection rate of the waste is improved; and on the other hand, based on cooperation of the main collecting branch and the auxiliary collecting branch, waste rushed out of the second end is shunted and gently collected, the splashing and accumulation phenomena generated when the waste impacts the inner wall of the grinding cavity are effectively reduced, the cleaning frequency is remarkably reduced, and the grinding efficiency is improved.

The invention provides an air knife device for PCB air drying, and relates to the field of printed circuit boards, the air knife device comprises an air inlet pipe, the air inlet pipe is fixedly connected with an air knife blocking frame, the air knife blocking frame is provided with an air outlet frame, the air outlet frame is internally provided with an air knife adjusting module, the top of the air outlet frame is provided with an air knife opening and two round holes, and the air knife opening and the two round holes are communicated with each other. Mounting modules are arranged on the outer walls of the air knife blocking frame and the air outlet frame, and the outer wall of the air inlet pipe is fixedly connected with a connecting plate. According to the air knife device, the soft air opening plate is adopted for integrally adjusting and changing the adjusting air opening, and the problems of a traditional air knife device can be avoided by integrally adjusting the adjusting air opening, that is, the air outlet of the area is prevented from being deformed when a single bolt is adjusted; and the air outlet uniformity is ensured by avoiding the deformation of the air outlet, so that the air drying effect and the air drying quality of the PCB are improved.

The utility model relates to section steel hot galvanizing equipment, and belongs to the technical field of hot galvanizing. According to the technical scheme, the low point of the front end of a magnetic roller frame is located on the discharging side of a zinc pot, the high point of the rear end of the magnetic roller frame is matched with an inclined roller way, and the inclined roller way inclines upwards and is matched with the inclination angle of a row of magnetic rollers; an air knife is arranged at the low point of the front end of the magnetic roller frame, and the air blowing direction of the air knife faces the zinc pot; and after the whole group of section steel is adsorbed by the magnetic roller after galvanization on the lifting hook, the surface of the whole group of section steel is cleaned through the air knife, and redundant zinc liquid after cleaning is blown back to the zinc pot. The device has the positive effects that the material receiving hook groups are alternately finished in the processes of material receiving, galvanizing and leading up, the efficiency is improved, the product quality is stable, the whole group of profile steel is led up by adopting the magnetic roller, meanwhile, the zinc blowing treatment is performed on the discharge side of the zinc pot, the process flow is shortened, the air knife is arranged in the area of the zinc pot, redundant zinc liquid is directly blown back to the zinc pot, and the production cost is reduced. And the zinc consumption is further reduced.

The invention provides a food processing conveying device with a cleaning effect, and relates to the technical field of food processing conveying, the food processing conveying device comprises two conveying frames, a conveying mechanism, a cleaning mechanism and a sweeping mechanism; the conveying mechanism comprises two conveying rollers arranged on the inner sides of the two conveying frames, the surfaces of the two conveying rollers are sleeved with a conveying belt, and a driving motor is arranged on the left side of the back face of the conveying frame on the front side. According to the scheme, when food containing sugar or colloid is conveyed, a hydraulic rod extends rightwards to make a movable wiping plate dip in cleaning liquid at the bottom of a mounting box, the hydraulic rod retracts to make the movable wiping plate reset, a conveying belt is cleaned through the movable wiping plate, and the conveying belt is dried through an air knife after cleaning; the cleaning mechanism is in a working state all the time, normal conveying of food is not affected, and the device is designed in a modular mode, convenient to install, easy to maintain and better in combined cleaning effect.

The utility model provides a plating thickness control device for hot-rolled ribbed steel bars. The plating thickness control device comprises a first air knife, a second air knife and a third air knife which are sequentially arranged at the downstream of a galvanizing bath along the conveying direction of the ribbed steel bars, each of the first air knife, the second air knife and the third air knife is of a hollow structure shaped like a Chinese character'hui ', a conveying channel is correspondingly formed in each air knife, and a plurality of nozzles facing the center of the conveying channel are arranged on the periphery of each conveying channel; the blowing direction of the first air knife nozzles is inclined towards the running direction of the ribbed steel bars, the blowing direction of the second air knife nozzles is perpendicular to the running direction of the ribbed steel bars, and the blowing direction of the third air knife nozzles is inclined opposite to the running direction of the ribbed steel bars. The three air knives which are continuously arranged and have different blowing angles are used for blowing off redundant zinc liquid attached to the surface of the reinforcing steel bar, it is guaranteed that the thicknesses of coatings of all parts of the surface of the ribbed reinforcing steel bar are consistent, and the effect is quite remarkable especially for the part, where zinc liquid is prone to being accumulated, of the joint of a transverse rib and a reinforcing steel bar body.