3443 results about "Blow out" patented technology

An air guide frame, a fan head, and a handheld concentrating fan are provided. The air guide frame is configured to be arranged at an air outlet of a fan head and guide air from a fan. the air guide frame includes an inner frame and a separator ring arranged at a periphery of the inner frame; a first air channel is formed in a periphery of the separator ring; a second air channel is formed between the inner frame and the separator ring; and a wind speed of wind exported from the second air channel is greater than a wind speed of wind exported from the first air channel. Compared with the existing technology, the air guide frame having the first air channel and the second air channel can implement the wind speeds of winds blown out through the two air channels being different.

The invention discloses a device and method for improving the laser welding quality of a large cylindrical battery tab, belongs to the technical field of new energy automobile battery welding, and aims to solve the problems of low material absorption rate, poor welding protection effect and the like in the prior art. The device comprises a fastening pressing block, the fastening pressing block fixes a battery cell and a collector plate, the fastening pressing block is provided with an internal gas passage, a blowing nozzle of the fastening pressing block is sequentially connected with a plasma activator, a gas heating device, a gas flow controller and a protective gas cylinder, and an exhaust nozzle of the fastening pressing block is connected with an exhaust device. Nitrogen blown out through the blowing nozzle sweeps over the surface of a to-be-welded area of the collector plate, a protective air curtain is formed in the to-be-welded area, the plasma activator conducts ionization activation on the nitrogen, formed nitrogen free radicals and the to-be-welded surface form a nitride layer in a chemical mode, and the laser absorption rate of the material can be remarkably improved. The reaction between the preheated workpiece surface and nitrogen free radicals can be accelerated, and a dual synergistic mechanism of physical preheating and chemical activation is formed.

The automatic punching device for automobile brake disc machining comprises a workbench, a feeding mechanism used for automatic feeding is arranged at the top of the left side of the workbench, an annular sliding rail is fixedly installed in the center of the top of the workbench, and a plurality of first limiting sliding blocks are slidably connected to the annular sliding rail; according to the automobile brake disc punching device, symmetrical punching is carried out on an automobile brake disc through two cutting punching machines on the symmetrical drilling mechanism, the punching efficiency is high, during punching, an inserting rod is inserted into a limiting sleeve, the cutting punching machines are limited and fixed through the limiting sleeve and the inserting rod, and the punching efficiency is high; the cutting perforating machine has the advantages that the problem that the cutting perforating machine deflects during perforating is avoided, perforating quality is improved, an inserting rod can press a bottom plate downwards every time the inserting rod is pressed downwards, air in an air bag is blown out from an air blowing pipe when the inserting rod ascends, the top of the automobile brake disc is blown to remove chippings while pressing downwards, and manual cleaning with an air gun is not needed.

The utility model discloses a hydraulic rock drill which comprises a machine body composed of a machine base, a cylinder body, a middle body, a gear box, a gear box cover and a machine head which are sequentially connected, a first cavity for containing an impact piston and a second cavity for containing a bit shank are formed in the machine body, and a cooling lubricating cavity communicated with the first cavity and the second cavity is formed in the machine body. An air inlet chamber is formed in the machine base, and an air inlet communicated with the air inlet chamber is formed in the rear end of the machine base. The impact piston is provided with a central channel which is communicated with the air inlet chamber and the cooling and lubricating air chamber; an air passing channel which is communicated with a gap between the bit shank, the rotary assembly and the machine head and a gap between the bit shank and the machine head part is formed in the machine head; cooling and lubricating air introduced into the air inlet chamber enters the cooling and lubricating cavity through the center channel of the impact piston, sequentially passes through the bit shank, the gap between the rotary assembly and the machine head and the air passing channel, enters the gap between the head of the bit shank and the machine head and is blown out, and the situation that the cooling effect is poor due to the fact that air flow is poor after heat exchange is avoided.

Provided is a battery module capable of accurately detecting the entry of a liquid. 【Solution means】The battery module 1 includes an exterior case 2, a battery assembly 3 housed in the exterior case 2, an inlet 27 provided on a first end wall 21 of the exterior case 2, a fan 5 attached to the inner surface of the first end wall 21 and blowing out the air sucked through the inlet 27 into the interior of the exterior case 2, a standing wall portion 6 disposed between the battery assembly 3 and the fan 5 and having an opposing surface 61 facing the fan 5, and a liquid leakage sensor 7 disposed below the opposing surface 61.

The utility model relates to an air duct structure and a cabinet machine in the technical field of air conditioners, the air duct structure comprises a main air duct, a fan, an air outlet frame and a grating, the grating is installed between the air outlet end of the main air duct and the air outlet frame, airflow in the main air duct contacts with the grating in the flowing process, the grating scatters eddy current, and the air outlet end of the main air duct is connected with the air outlet frame. Air flow blown out of the main air duct passes through the grille and then is blown to the air outlet frame, the pressure difference between the air flow and the air outlet frame is reduced, air outlet is smoother, and therefore abnormal sound is effectively eliminated. The installation position of the grille can effectively scatter the vortex area, meanwhile, installation operation of the grille is more convenient, the installation position is easy to operate, additional positioning pieces do not need to be added in the air duct to fix the grille, the grille only needs to be directly connected to the lower side of the air outlet frame or the upper side of the air outlet end, and the installation operation is convenient. The additional positioning piece is omitted, so that the smoothness of the air cavity of the main air duct is further improved, and the air resistance of the air cavity is reduced.

The invention relates to the technical field of environmental protection and dust removal, and discloses a dust removal device for calcium hydroxide product production, the dust removal device comprises a box body, the lower surface of the box body is provided with two sets of dust falling hoppers, the two sides of the box body are fixedly connected with an air inlet pipe and an air outlet pipe respectively, and the inner wall of the box body is provided with a partition plate. The driving assembly drives the pulse sliding pipe and the plugging assembly to move downwards, after the pulse sliding pipe and the plugging assembly move to a certain position, the control assembly controls the plugging assembly to plug a certain section of the filter cartridge, then the pulse mechanism enables gas to pass through the pulse main pipe, the pulse fixing pipe and the pulse sliding pipe, and then the gas is blown out from the pulse head. And then the driving assembly drives the blocking assembly to continue to move downwards, pulse dust removal is carried out on the filter cartridge section by section, pulse airflow accurately covers the whole section of the filter cartridge, it is ensured that dust on all parts can be thoroughly removed, and the dust removal effect is greatly improved.

Provided is a heat gun formed by wave-type heating bodies. The heat gun includes a housing assembly and a heating assembly mounted in the housing assembly, where an air supply assembly is fixedly mounted in the housing assembly. The heating wire is wound into a wave-type structure by dedicated equipment. Compared with a traditional slingshot-wire-type structure, the wave-type structure is capable of resisting deformation of the heating wire at a high temperature and in a process from a high temperature to a normal temperature such that defects caused by thermal expansion and contraction when the heating wire operates or stops can be avoided. After the wave-type structure of the heating wire is wound around a mica plate, a direction of the wave-type structure is exactly perpendicular to a direction of an air channel such that wind generated by a fan behind can blow out heat with maximum efficiency.

The invention provides a material overturning structure of a forging and pressing machine, and relates to the field of forging and pressing equipment. The top end face of the forging and pressing workbench is fixedly connected with four supporting guide columns in a rectangular array shape. The upper parts of the four supporting guide columns are fixedly connected with a mounting seat; a hydraulic cylinder is arranged in the mounting seat; the bottom end face of an output shaft of the hydraulic cylinder is fixedly connected with a forging base. The top end face of the forging and pressing workbench is fixedly connected with a blank containing plate. The forging and pressing seat is aligned with the blank placing plate; a hydraulic station is arranged on the right portion of the forging and pressing workbench. When the machine tool shaft accessories are turned over, compressed air in the air supply piston box is fed into the air guide pipeline through a series of transmission and is blown out through the blowing frame, oxide skin generated in the forging and pressing process is blown off, and the problem that workers usually need to use tools such as air guns and the like is solved. The problems that the surface of a blank is blown and cleaned in the forging and pressing process, a worker needs to continuously and repeatedly blow and sweep, and the labor intensity of the worker is large are solved.

The invention provides a heat dissipation system and energy storage equipment, and belongs to the technical field of heat dissipation. The heat dissipation system comprises a first air duct structure and a second air duct structure, wherein the first air duct structure comprises first air duct paper with a first air cavity, a first air inlet and a first air outlet; the first air cavity is used for accommodating part of a first heating element; the second air duct structure comprises second air duct paper with a second air cavity, a second air inlet and a second air outlet, and the first air duct paper and the second air duct paper are arranged side by side; the second air cavity is used for containing a second heating piece, and the heating value of the second heating piece is smaller than that of the first heating piece. The air inlet fan is arranged at the first air inlet; the reversing fan is arranged at the downstream of the airflow direction of the first air cavity and the upstream of the airflow direction of the second air cavity; and the air outlet fan is arranged at the second air inlet, and the air outlet fan is used for introducing the air flow into the second air cavity and blowing the air flow out through the second air outlet. According to the invention, the uniformity of heat dissipation can be improved, and the aesthetic property of a corresponding product can be improved.

The invention relates to the technical field of laser cutting equipment, and discloses galvanized coiled plate cutting equipment which comprises a mounting frame, a guide rail structure, a cutting structure, a conveying structure, an intercepting toothed plate, a slag removal fan and a discharging structure. The cutting structure comprises a cutting seat, a laser cutting head, a separated protective cover, the intercepting toothed plate, the slag removal fan and the discharging structure; the separated protective cover is formed by splicing a plurality of splicing covers. Each splicing cover comprises an outer cover plate, an inner air box, a limiting plate, a limiting spring and an air supply hose. When the device is used, high-pressure air is blown out of the inner air box to form a protective air curtain on the splicing cover, the annular air cover and the laser cutting head, and therefore the situation that slag splashes and is intercepted, and zinc steam adheres to the splicing cover, the annular air cover and the laser cutting head can be prevented; and air is forced to be discharged along the cutting seam by the closed space formed by the separation type protective cover, so that the blowing force of the airflow to the lower edge of the notch is enhanced, and the adhering slag can be forcibly stripped.

The invention discloses an air guide assembly, an angle control method of an air guide plate, electronic equipment and a storage medium, and relates to the technical field of heat dissipation, the air guide plate can adjust the flow direction of air flow blown out by a fan, so that the flow direction of the air flow can be flexibly adjusted through rotation of the air guide plate, and air cooling heat dissipation of the air flow in any direction is achieved. Besides, after the sensors collect relevant data, the processor can control the driver to drive the air guide plate to rotate according to the data collected by the at least one sensor, so that the air guide direction of the air guide plate can adapt to the data collected by the at least one sensor, the air guide plate is driven to rotate through the driver, and air cooling heat dissipation is flexibly and efficiently executed. Compared with a heat dissipation scheme in the related technology, heat dissipation is more flexible and efficient, and the structure is simpler. Therefore, the technical problems of low heat dissipation efficiency and complex heat dissipation structure can be solved, and the technical effects of flexible and efficient heat dissipation and simple heat dissipation structure are achieved.

The invention discloses a directional heat dissipation power distribution cabinet with adjustable air deflectors, which relates to the technical field of equipment for power distribution cabinets and comprises a cabinet body and a heat dissipation unit arranged in the cabinet body. The heat dissipation unit comprises a directional heat dissipation assembly used for carrying out fixed-point jet cooling on key heating elements, an air guide assembly used for optimizing overall airflow organization in the cabinet, and a water cooling assembly used for carrying out pre-cooling on cooling airflow of the directional heat dissipation assembly. The directional heat dissipation assembly comprises a fan at least arranged on the top wall in the cabinet body, an air supply pipe communicated with an outlet of the fan, and an annular air pipe arranged in the power distribution cabinet and communicated with the air supply pipe. Through cooperation of the directional heat dissipation assembly and the water cooling assembly, air blown out of the air blowing pipe at the tail end of the telescopic air column is no longer ambient temperature air but low-temperature cold air cooled in advance through the liquid cooling system. According to the pre-cooling type directional air supply mechanism, the heat dissipation efficiency and the limit capacity of air cooling are greatly improved.

The utility model discloses a high-precision cylindrical grinder for a lead frame. The high-precision cylindrical grinder comprises a lathe bed, and a power device, a grinding wheel assembly, a diamond grinding wheel repairing cutter, a cooling assembly, an air pump, a negative pressure pump, a dust removal box, a main shaft and a driven shaft which are arranged in the lathe bed. In the grinding wheel trimming process, compressed air generated by the air pump enters the air blowing cavity along the pipeline and the air pipe connector and then enters the blowing groove through the communicating groove, airflow is blown out after the flow speed is increased through the closing opening in the tail end of the blowing groove, and a complete annular air curtain is formed on the outer wall of a part located between the chuck and the ejector pin; high-speed moving sand particles generated during grinding wheel repairing can be effectively prevented from falling on the surface of a part, the product machining quality is improved, and then smooth production of a lead frame is guaranteed.

The utility model discloses a rotary screening machine with a rotary blowing device for screening powder, which comprises a rotary screening device and a rotary blowing device, and a cylindrical screen distributed along a first direction is arranged in the rotary screening device; the rotary air blowing device comprises a hollow ventilation cylinder and an air compressor which are arranged in the first direction, one end of the hollow ventilation cylinder is connected with the air compressor, the other end of the hollow ventilation cylinder extends into the cylindrical screen, a plurality of air blowing openings are formed in the side wall of the hollow ventilation cylinder, and air is pressurized through the air compressor and then fed into the hollow ventilation cylinder. And the powder is blown out at high pressure through the plurality of air blowing ports, so that the high-pressure air flow directly acts on the powder in the cylindrical screen mesh, the powder is disturbed and pushed to keep a flowing state, powder accumulation caused by static or gravity action is reduced, the powder is promoted to flow out through the cylindrical screen mesh, the phenomenon that the powder blocks the cylindrical screen mesh in the screening process is reduced, and the screening efficiency is improved. And the shutdown cleaning frequency caused by blockage is reduced.

The application discloses a kind of in-service air conditioner performance detection device and method.The device is composed of wind receiving chamber, exhaust chamber, return air chamber, differential pressure gauge, two mixers, heating wire and humidifier, return air temperature and humidity probe and return air motor.The device uses electric heating wire heat balance air conditioner refrigeration capacity, through heating and humidification method, air conditioner blows out the air to the detection required temperature and humidity state, and is connected to the return air opening of air conditioner, circulates and operates to reach stable state and has continuous condensate, uses electric energy meter to collect the electric energy of heating wire 1h, and synchronously collects the condensate amount generated by air conditioner 1h, according to the data collected, the performance of in-service air conditioner can be calculated, without disassembling air conditioner, avoid damage to in-service air conditioner.

The invention discloses a surrounding furnace tea cooking device which can utilize a first heating body to radiate heat outwards to cook tea or cook a hot pot or bake food and the like, and can also utilize a hot air assembly to heat and utilize an atomization humidification assembly to humidify and reduce dryness. The air blower can accelerate flowing of air in the water tank, the pressure intensity in the water tank is increased, mist is blown out in the circumferential direction, the temperature of air on the circumferential side is increased, mist outlet is even, the coverage range is large, all users sitting on the periphery of the surrounding furnace table can be covered, and meanwhile flowing of air in the heat dissipation cavity can be accelerated through the air blower, and heat dissipation is conducted on the heating furnace assembly. No extra heat dissipation structure is needed, and the practicability is improved.

This invention provides a fan wall, belonging to the technical field of air conditioning equipment, including a mounting frame, multiple axial flow fans, multiple air supply duct assemblies, and multiple drive devices. Each axial flow fan has four air supply duct assemblies on its outer side. Each air supply duct assembly includes two horizontally arranged ducts. Each drive device drives the outlet of one duct to move obliquely upwards away from the other duct to the rear side of the corresponding axial flow fan, and obliquely downwards away from the other duct to the rear side of the corresponding axial flow fan. The air supply duct assemblies generate and transport high-speed airflow, which is ejected from the outlet of the duct, improving the uniformity of airflow and air circulation speed of the fan wall. When an axial flow fan malfunctions, the drive device drives the outlet of the corresponding duct to move and deflect, blowing high-speed airflow towards the inlet of that axial flow fan. The high-speed airflow is blown out from the outlet of the axial flow fan along the fan's duct, preventing the formation of backflow at the stopped axial flow fan.

The invention discloses a laser die-cutting machine capable of cutting an elastic film, and relates to the field of laser die-cutting machines, the laser die-cutting machine comprises a case, a first moving table capable of transversely and vertically moving and a second moving table capable of longitudinally moving are arranged in the case, a mounting frame is fixed on the first moving table, and a laser cutting head is arranged at the bottom end of the mounting frame; a fixing base coaxial with the laser cutting head is arranged at the bottom end of the mounting frame, and the bottom end of the fixing base is connected with an air blowing box and an air suction box which are oppositely arranged. When the stainless steel plate with the single face coated with the film is cut, high-power laser can be directly used for cutting the stainless steel plate at a time, high-speed airflow synchronously blown out by the air cooling mechanism can effectively restrain heat shrinkage of the elastic film caused by high temperature, material deformation and irregular edge cutting are avoided, the machining efficiency is remarkably improved while the high-power laser penetrates through the stainless steel plate, and the production cost is reduced. Repeated positioning errors and operation cost of equipment are reduced, and integrated efficient precision machining of the film-coated metal plate is achieved.

The invention provides a coating device for paper cup production, and belongs to the technical field of paper cup processing, the coating device comprises a transmission frame and a spraying frame, a paperboard is arranged above the transmission frame, the transmission frame is connected with a lifting assembly, the transmission frame is connected with a collecting box, the coating device further comprises a trowelling assembly, the trowelling assembly is connected with a hot-air blower, and the hot-air blower is connected with the spraying frame. The trowelling assembly is used for uniformly scraping a coating on the surface of the paperboard; the device has the beneficial effects that through the lifting assembly and a V-shaped scraper of the trowelling assembly, it can be guaranteed that the thickness of a coating is uniform, redundant paint can be guided to a collecting box and can be recycled after being treated, and the production cost is reduced; meanwhile, the air heater synchronously blows out hot air after the coating is scraped, rapid curing of the coating is promoted, the product quality is improved, the air heater can switch airflow paths to automatically clean the scraping plate, residual coating is stripped through high-speed airflow, it is avoided that subsequent use is affected by drying and caking, the manual cleaning cost is saved, and the long-term scraping precision is guaranteed.

The invention relates to the field of safe driving, in particular to a vehicle tire burst control method, electronic equipment, a storage medium and a vehicle. The vehicle tire burst control method comprises the steps that if it is determined that a first tire of a vehicle bursts, unbalance parameters of the vehicle at the current moment are obtained; the second tire is controlled to rotate towards the first tire side according to the steering angle, the second tire is a rear wheel non-burst tire, and the steering angle is determined according to the unbalance parameter. According to the invention, real-time and effective active safety control can be carried out on the vehicle, so that the safety of the vehicle is improved.

The utility model relates to the technical field of neck-hanging fans, in particular to an air supply outlet structure of a neck-hanging fan and the neck-hanging fan, according to the air supply outlet structure of the neck-hanging fan, due to the fact that the size of an air outlet of a kidney-shaped groove is large and the air outlet of the kidney-shaped groove is bent inwards in an arc shape, airflow can be blown upwards along the arc-shaped bent face of the air outlet of the kidney-shaped groove, and the air supply outlet structure of the neck-hanging fan is not prone to falling off. Therefore, the air volume can be large, and air can be supplied in a large range. According to the neck-hung fan, the hanging arms are connected to the two ends of the middle connecting piece, the air inlets are formed in the bottoms of the hanging arms, and in practical application, when the fan blades are started, airflow enters from the air inlets, passes through the grating air channel device and then is blown out from the kidney-shaped groove air outlets, so that the neck-hung fan can generate large air volume, the structure is simple, the space in the shell is large, and the service life of the fan is prolonged. A large-capacity battery can be conveniently placed, and the experience feeling of a user can be well improved.

The invention relates to the technical field of cement prefabricated products, and discloses a multi-station drilling device for cement prefabricated product production, which comprises a rack, a controller is fixedly mounted on one side of the rack, four mounting frames are fixedly connected to the interior of the rack through bolts, U-shaped blocks are arranged in the mounting frames, and the U-shaped blocks are fixedly connected with the controller through bolts. A punching motor is fixedly mounted in the U-shaped block, the output end of the punching motor penetrates to the bottom of the U-shaped block and is fixedly connected with a drill bit, and a hydraulic rod is fixedly mounted at the top of the mounting frame. By arranging the gas collecting mechanism, a transmission motor can be started while punching is conducted, the transmission motor can drive a transmission rod and a lead screw to rotate and be matched with the gas collecting mechanism, compressed gas is intermittently sprayed out of a gas spraying pipe and then sprayed into a hole through a trapezoid spraying head, dust in the hole is blown out, and the situation that a drill bit is stuck due to dust particle accumulation is avoided; and therefore, the punching speed is increased.

An integrated cylindrical lithium battery capacity grading device disclosed by the present invention comprises an equipment cabinet, a test press machine, a guide mechanism and a heat dissipation device, the test press machine is arranged in the equipment cabinet, the test press machine is of a closed structure, and the test press machine comprises a press machine frame, a lifting frame and a probe module; the guide mechanism is arranged between the press frame and the lifting frame; the heat dissipation device comprises a condenser, a heat dissipation fan module and a guide fan module, the condenser is arranged on the side edge of the equipment cabinet, the heat dissipation fan module is arranged along the circumferential surface of the probe module, and the guide fan module is arranged on the lifting frame; wherein the guide fan module blows out cold air cooled by the condenser upwards, the heat dissipation fan module draws back hot air flowing through the battery, and the condenser, the heat dissipation fan module and the guide fan module are sequentially connected to form a closed circulating air duct in the test press.

The utility model discloses an air humidifier which comprises a shell, a filter screen assembly arranged in the shell and provided with a hollow structure, a wind wheel assembly arranged corresponding to the hollow structure, an air outlet grille arranged corresponding to the wind wheel assembly and arranged at the top of the shell, and a water tank assembly arranged in the shell and used for supplying water to the filter screen assembly. And the heating assembly is arranged on the air outlet path behind the filter screen assembly and is used for heating the wetted air. According to the air humidifier, the humidified air can be heated in cold weather, the humidified air is blown out after the temperature of the humidified air is increased, the humidifying efficiency of the humidifier can be improved, meanwhile, the blown air is more warm and moist when the air humidifier is used in cold weather, and the use comfort of the air humidifier is improved.

The invention discloses a landscape maintenance device for garden design. The landscape maintenance device comprises a supporting mechanism, a blocking mechanism and a limiting mechanism. The supporting mechanism comprises a spraying assembly, a pressure applying assembly, an electric telescopic rod, a supporting assembly and a liquid conveying assembly. The plugging mechanism comprises a plugging assembly and an extrusion assembly; the limiting mechanism comprises a pressure assembly and a buckle assembly. The spraying assembly comprises a spray head and an atomizing plate; the pressure applying assembly comprises a first fixing frame, a sliding blocking frame, a first spring and a pressing rod device. The extrusion assembly comprises a fixed pipe, a telescopic pipe, a round pipe and a ventilation device; an internal mechanism is driven through telescopic movement of the electric telescopic rod, residual liquid drops on the surface of the atomization plate are sucked in firstly, then collected objects are thoroughly blown out through high-pressure gas, residual water and impurities in the atomization plate and an internal flow channel are forcibly removed in a mechanical mode, manual intervention is reduced, and the atomization efficiency is improved. The service life of the atomizing plate and the nozzle runner is obviously prolonged, the maintenance cost is reduced, and the uniformity and reliability of each spraying are ensured.

The invention discloses an in-service air conditioner performance detection device and method. The device is composed of an air receiving chamber, an air exhaust chamber, an air return chamber, a differential pressure gauge, two mixers, a heating wire, a humidifier, an air return temperature and humidity probe and an air return motor. According to the device, the refrigerating capacity of the air conditioner is balanced through the heating amount of the heating wire, air blown out of the air conditioner is adjusted to be in the temperature and humidity state needed by detection through a heating and humidifying method, the device is connected to an air return opening of the air conditioner, circulating operation is conducted to reach the stable state, and continuous condensate water is generated; and the condensate water amount generated by the air conditioner within one hour is synchronously collected, the performance of the in-service air conditioner can be calculated according to the collected data, the air conditioner does not need to be disassembled and assembled, and damage to the in-service air conditioner is avoided.

The invention relates to the field of welding equipment, in particular to metal welding equipment convenient for manual operation, which comprises a welding gun, a conductive sleeve, a welding nozzle and the like, the welding gun is fixedly connected with a conductive sleeve; and the welding gun is connected with a welding nozzle. In the welding process, the blocking state of the first through hole and the second through hole can be changed by rotating the adjusting ring, so that protective gas is blown out from the first gas outlet and the second gas outlet at the same time, the coverage range of the protective gas is widened, and before welding and after welding, the blocking state of the first through hole and the second through hole is changed by rotating the adjusting ring, so that the welding efficiency is improved. Air is blown out from the first air outlet and the second air outlet at the same time, the blowing effect of air flow on impurities and welding slag on the surface of a metal workpiece is improved, the cleaning efficiency of dust, impurities and welding slag in holes, cracks and corners is improved, workers do not need to frequently replace tools during welding operation, and therefore the tool is suitable for different welding conditions; and the welding convenience is greatly improved.

The invention relates to the technical field of automobile parts, in particular to an automobile air conditioner air outlet assembly convenient to adjust. An air outlet is formed in one end of the shell; an air outlet pipeline is arranged at the other end of the shell; transverse fan blades and longitudinal fan blades are arranged at the air outlet; the shell is provided with an adjusting basin; the adjusting basin is movably provided with a universal ball; a spherical cavity is formed in the universal ball; a transverse circular ring groove and a longitudinal circular ring groove which are orthogonal are formed in the inner wall of the spherical cavity. By adjusting the offset of the universal ball in the longitudinal direction and the transverse direction, the longitudinal fan blades can be controlled to swing left and right, and the transverse fan blades can be controlled to swing up and down; in addition, due to the fact that the universal ball is arranged outside the air outlet, occupation of the internal space of the air outlet can be eliminated, and the effective air outlet area is obviously increased, so that airflow blown out by the air conditioning system is not blocked by middle parts any more and can be diffused into the space in the automobile in a smoother and more efficient mode.

The invention discloses a totally-closed argon protection device, which relates to the technical field of die casting pouring, and comprises a steel ladle nozzle, a funnel brick, a central casting pipe, an upper argon ring, a lower argon ring and a cover body arranged between the upper argon ring and the lower argon ring, an upper argon gas outlet and an upper argon gas inlet are formed in the upper argon gas ring, the upper argon gas outlet is formed in the inner side of the upper argon gas ring, and an opening of the upper argon gas outlet faces the inclined upper portion; and the lower argon ring is provided with a lower argon outlet and a lower argon inlet. The upper argon outlet blows upwards obliquely, upper argon flow drives air around the upper argon ring to flow outwards at the moment, so that air in the cover body is exhausted, meanwhile, when the lower argon outlet blows towards the middle injection pipe, argon is in contact with the middle injection pipe and then escapes, and part of argon escapes towards the inside of the cover body. Meanwhile, along with continuous outward flow of air around the upper argon gas ring, the whole cover body is continuously filled with escaping argon gas blown out by the lower argon gas ring, so that the oxygen content in the cover body is reduced.