38results about How to "Easy to overflow" patented technology

The soft plasma arc combined laser-MIG composite welding device comprises a mounting plate, a soft plasma arc welding gun, a laser welding gun head and an MIG welding gun are sequentially mounted on the mounting plate, and the soft plasma arc welding gun and the MIG welding gun can be horizontally, vertically and rotationally adjusted on the mounting plate; the soft plasma arc welding gun forms an upper end shielding gas channel, the upper end of the upper end shielding gas channel is connected with a shielding gas pipe connector, a lower end shielding gas channel, an annular shielding gas cavity and a round hole are formed in the gas nozzle, and the round hole vertically penetrates through the interior of the annular shielding gas cavity to the exterior of the gas nozzle. Compared with the prior art, through the synergistic effect of the soft plasma arc welding gun, the laser welding gun head and the MIG welding gun, the welding penetration depth is increased, the welding speed is increased, the occurrence of welding defects is reduced, and the welding quality is improved. And the welding quality and the welding efficiency are improved.

The invention discloses a high-current-density hydrogen evolution electrode for alkaline water electrolysis as well as a preparation method and application of the high-current-density hydrogen evolution electrode, and belongs to the technical field of hydrogen production by water electrolysis. The nano-catalyst hydrogen evolution electrode prepared by the invention has a sandwich structure, the outermost layer is the nano cobaltosic oxide catalyst, and the nano-catalyst hydrogen evolution electrode has large specific surface area and high porosity, is beneficial to active site exposure, electrolyte permeation and gas product overflow, promotes mass transfer power and improves current density. And the nanosheet catalyst grows on the metal cobalt interlayer in an in-situ rooting manner, so that the interface bonding and charge transfer of the catalyst are enhanced, and the mechanical stability and the charge transfer power of the catalyst are improved. The prepared electrode material HER is high in activity and good in stability, key, large-current-density catalysis can be achieved under low overpotential, the performance is remarkably superior to that of a commercial # imgabs0 # nickel electrode, and the key bottleneck that the running current density of an ALK electrolytic cell is low is hopeful to be solved. And moreover, the electroplating preparation process is simple, time and energy are saved, the cost is low, and large-scale production can be realized.

The invention relates to the technical field of blood purification adsorbent mixing, in particular to a blood purification adsorbent pre-filling mixing device which comprises a first mixing pipe. A first through hole and a second through hole which are formed between the particle feeding pipe and the mixture discharging pipe are formed in the second mixing pipe, the second mixing pipe rotates in the axial direction of the second mixing pipe, a solution at the bottom of the second mixing pipe is from bottom to top, and an opening is formed in the top of the second mixing pipe; the floating rod is vertically arranged in the second mixing pipe in a sliding mode, the bottom end of the floating rod is connected with a sealing block, the circumferential side wall of the floating rod is connected with a sealing ring, an air leakage cavity is formed in the floating rod, air in the second mixing pipe flows into the air leakage cavity in a one-way mode, and a sealing piece capable of sealing or opening the top of the air leakage cavity is arranged on the floating rod; the negative pressure exhaust pipe is communicated with the top of the mixing pipe I; bubbles in a mixture of particles and a solution can be removed as much as possible, the risk that bubbles exist in the particles is reduced, the processing time is shortened, and uniform distribution of the particles in the solution is facilitated.

The utility model provides a shoe sole forming mold, and belongs to the technical field of shoe sole molds. The utility model solves the problem of unstable sole forming quality caused by easy displacement and dislocation between an upper die and a lower die after long-time opening and closing due to the fact that the upper die and the lower die in the conventional sole forming die are mostly attached to each other in a plane type or a cambered surface type. The shoe sole forming mold comprises an upper shoe mold body and a lower shoe mold body, when the upper shoe mold body and the lower shoe mold body are mutually closed, the faying faces of the upper shoe mold body and the lower shoe mold body are in a mutually-matched wave shape, and when the upper shoe mold body and the lower shoe mold body are opened, an upper mold faying face at the bottom of the upper shoe mold body and a lower mold faying face at the top of the lower shoe mold body are included; a plurality of lower die excess material grooves are formed in the lower die binding face, and the upper die excess material grooves and the lower die excess material grooves jointly form a plurality of excess material openings. The shoe sole forming machine has the advantages of complete shoe sole forming, stable quality, better standard performance and higher percent of pass.

The utility model relates to a heat-conducting consumable, in particular to heat-conducting silicone grease which comprises a body, the body is provided with an upper high filler layer and a lower high filler layer, the upper high filler layer is in a square shape, the inner side of the upper high filler layer is filled with a low filler layer, a containing groove is formed in the bottom of the lower high filler layer, and the lower high filler layer is filled with a heat-conducting material. The containing groove is filled with a protective filler layer, a graphene sheet is arranged on the inner side of the protective filler layer, the graphene sheet is attached to the bottom of a low filler layer, and the low filler layer and the protective filler layer are the same in component. The heat-conducting silicone grease has the advantages of being reasonable in design and high in heat-conducting performance, heat in electronic components can be more efficiently conducted out through the graphene sheets inside the heat-conducting silicone grease, the temperature of the electronic components can be reduced, the heat-conducting silicone grease can be evenly spread on the surfaces of the electronic components, the probability that the heat-conducting silicone grease overflows unevenly is reduced, and the heat dissipation performance is guaranteed.

The utility model discloses an environment-friendly drainage ditch which is arranged in a road structure. The road structure comprises a base layer and a pavement layer which are sequentially arranged from bottom to top; comprising a water flowing groove, and the water flowing groove is formed in a base layer and comprises a water flowing section and a water collecting section; an inlet is formed in the position, corresponding to the flowing water section, of the pavement layer; the width of the inlet is smaller than that of the gutter channel; the interior of the water flowing section and a discharge port in the upper portion of the water flowing section are filled with first coarse particle gravel layers. A fine-particle gravel layer is laid at the bottom of the water collecting section; a pipeline is mounted at the top of the fine-particle gravel layer along the long axial direction in a full-length manner; through holes are formed in the top of the pipeline at intervals, and the outer side of the pipeline is wrapped with a first filter screen; the space between the top of the fine-particle gravel layer and the pavement layer is filled with a second coarse-particle gravel layer; the problems of water collection and drainage of the drainage ditch are solved.

This invention discloses a method for microwave-catalyzed dehydrogenation of naphtha to produce aromatics, specifically comprising the following steps: Step 1, oxidizing and etching the surfaces of four different diameter carbon fibers to obtain four modified carbon fibers; Step 2, preparing four platinum-carbon fibers of different diameters based on the four modified carbon fibers obtained in Step 1; Step 3, preparing a gradient-pore structured platinum-carbon fiber paper based on the four different diameter platinum-carbon fibers obtained in Step 2; Step 4, using the gradient-pore structured platinum-carbon fiber paper obtained in Step 3 to catalyze the dehydrogenation of naphtha to obtain aromatics. This invention uses microwave-assisted catalysis to lower the reaction temperature, achieving localized catalytic heating to reduce side reactions, and also achieves high dehydrogenation efficiency.

The utility model discloses a rainbow trout hatching barrel which comprises a barrel body, a grate, a water injection tubular column and a funnel. The top of the barrel is open; the grate is horizontally placed in the barrel body; a first through hole is formed in the middle of the grate, the water injection tubular column vertically penetrates through the first through hole of the grate, a plurality of second through holes are further evenly formed in the grate, rainbow trout roes are laid on the grate, and the hole diameter of the second through holes is smaller than the diameter of the rainbow trout roes; the funnel is inserted into the top opening of the water injection tubular column. According to the rainbow trout hatching barrel, flowing water can sequentially pass through the funnel and the water injection pipe column, flows out from the bottom of the water injection pipe column, then passes through the second through holes in the grate and is provided for rainbow trout eggs laid on the grate, and finally the flowing water flows out from the opening in the top of the barrel body. In the whole process, flowing water needed for hatching rainbow trout roes is guaranteed, the flowing water cannot directly impact the roes, the hatching efficiency of the roes is greatly improved, the roes can be laid on the grate in multiple layers, and the rainbow trout roe hatching device is suitable for hatching a large number of rainbow trout roes.

An experimental apparatus and method for evaluating the dynamic anti-icing performance of superhydrophobic materials are disclosed, relating to the field of superhydrophobic material anti-icing technology. The technical solution includes a test section containing a model. A substrate is connected to the outer surface of the model, and a heating film is placed between the substrate and the model. The beneficial effects of this technical solution are: by adding a heating film under the substrate, the initial freezing time in ultra-low temperature experiments is effectively delayed, ensuring that the test piece does not immediately freeze when the ultra-low temperature is activated, thus guaranteeing the accurate acquisition of the initial freezing time. Simultaneously, by combining a high-speed camera and a thermal imaging camera, the freezing process and degree can be visually observed, providing a visual basis for comprehensive evaluation. When the leading edge of the substrate freezes, the power of the heating film is increased to melt the ice layer, and the overflow water re-condenses into overflow ice away from the heating zone. By measuring the relative position of the overflow ice and the reference chord length, the surface lubrication performance of the material can be further evaluated.

The utility model provides a deodorization tower steam conveying device, relates to deodorization tower technical field, including deodorization tower main part and conveying mechanism, the conveying mechanism includes cooling box and evaporation box, cooling box and evaporation box both are fixed in the outside of tower body, the inside of cooling box is equipped with a pair of sloping plate, and the cooling pipe is inserted between the pair of sloping plate, and the cooling pipe is equipped with the cooling box. An activated carbon adsorption layer is arranged at the bottom end in the cooling box, a pipeline is connected to the bottom end of the cooling box, one end of the pipeline is communicated with the evaporation box, the deodorization tower body comprises a tower body, a steam outlet pipe is connected to the top end of the tower body, one end of the steam outlet pipe is communicated with the cooling box, and steam inlet pipes are installed on the two sides of the exterior of the tower body; one end of each steam inlet pipe extends into the tower body and is provided with a conveying pipe, a plurality of air holes are formed in each conveying pipe at equal intervals, and one end of one steam inlet pipe extends into the evaporation box. The steam conveying device of the deodorization tower can effectively improve the utilization rate of steam, improves the practicability of the steam conveying device of the deodorization tower, and has high practical value.

The invention belongs to the technical field of polyester films, and relates to a preparation method of a high-temperature-resistant low-precipitation polyester film, which comprises the following steps: sequentially crystallizing, dedusting and drying a polyester raw material, carrying out melt extrusion by a melt extruder, feeding into a coarse filter, feeding a polyester melt subjected to coarse filtration into a devolatilization device, and carrying out devolatilization to obtain the high-temperature-resistant low-precipitation polyester film. The polyester melt subjected to devolatilization enters a metering extruder and a fine filter in sequence, the polyester melt subjected to fine filtration enters a die head through a melt pipe, is extruded from the die head and is cooled by a sheet casting roller to form a thick sheet, and then the thick sheet is subjected to the procedures of longitudinal stretching, transverse stretching, heat setting and traction rolling in sequence to prepare the high-temperature-resistant low-precipitation polyester film. The devolatilization device comprises a shell, a screw rod, an electric field generating device and a plurality of star-shaped rotors mounted in the shell. The content of low molecules in the polyester film is greatly reduced through the specially designed devolatilization device, the quality of the prepared polyester film is better, and high temperature resistance and low precipitation performance are achieved.

The invention relates to an automatic powder conveying system and belongs to the technical field of powder conveying, the automatic powder conveying system comprises a pallet conveyor, a material conveyor and a manipulator unstacker, the manipulator unstacker is located on the right side of the pallet conveyor, the material conveyor is located on the right side of the manipulator unstacker, and an empty plate stacking machine is fixed to the back face of the pallet conveyor. A crystal crusher is fixed to the top of the material conveyor, a lifting dust remover is fixed to the right side of the material conveyor, and an automatic bale cutter is fixed to the right side of the lifting dust remover. According to the automatic powder conveying system, through cooperation of the pallet conveyor, the mechanical arm unstacker, the material conveyor, the crystal breaking machine and the automatic bag cutting machine, outer bags can be automatically subjected to crystal breaking and conveying, then the automatic feeding and conveying effects can be achieved, the labor intensity of workers is reduced, and the production efficiency is improved; and dust on the outer surface can be effectively cleaned and pulled, so that the safety degree of food can be effectively improved.

The invention relates to an industrial hydrogen chloride gas preparation device, and relates to the technical field of hydrogen chloride preparation, the industrial hydrogen chloride gas preparation device comprises a fixing frame and a reaction kettle, the reaction kettle is slidably connected to the fixing frame, the fixing frame is provided with a vibration mechanism, the vibration mechanism is connected with the reaction kettle, the reaction kettle is provided with a stirring mechanism, and the stirring mechanism is connected with the vibration mechanism. The stirring mechanism is used for stirring a solution in the reaction kettle, a sulfuric acid spray head, a hydrochloric acid spray head and a hollow support column are arranged in the reaction kettle, the sulfuric acid spray head is arranged at the upper end part of the reaction kettle, the hollow support column is arranged at the lower end part of the reaction kettle, the hydrochloric acid spray head is connected with the hollow support column, and the hydrochloric acid spray head is connected with the hollow support column. An air outlet nozzle is arranged at the upper end part of the reaction kettle, and a liquid outlet nozzle is arranged at the lower end part of the reaction kettle. The invention has the effect of avoiding the influence on the productivity of hydrogen chloride gas.

The invention belongs to the technical field of environmental protection, and discloses a device and a method for removing nitrogen and phosphorus from liquid. The device comprises a struvite reaction tank, a pressure gas dissolving device and an ammonia nitrogen stripping tank which are connected in sequence, the struvite reaction tank is configured as follows: liquid and a precipitation agent are subjected to struvite precipitation reaction, and nitrogen and phosphorus are removed; the pressure gas dissolving device is configured to partially or completely pressurize and dissolve gas in reaction liquid after struvite reaction; and the ammonia nitrogen stripping tank is configured to release the reaction liquid containing the dissolved gas under reduced pressure, and stripping to remove ammonia nitrogen. According to the method, struvite precipitation and pressurized dissolved gas denitrification are combined, the problem that the sludge filtrate generated after sludge hydrolytic acidification cannot be directly used as a carbon source to be reused for sewage treatment is solved, the treatment cost is low, and the method is suitable for engineering application.

The utility model provides a distributing device which comprises a supporting bottom plate, a protection box is installed above the supporting bottom plate, a cover plate is installed on the top of the protection box, a handle is installed on the top of the cover plate, a feeding port is formed in one side of the protection box, and the side, close to the protection box, of the feeding port is communicated with the interior of the protection box. The side, away from the feeding port, of the protection box is provided with the discharging port, the dust collection box is installed above the supporting bottom plate, the screening plate is installed in the protection box, the fixing plate is installed at the bottom of the screening plate, the cleaning part is installed above the fixing plate, and the dust suction part is installed at one end of the fixing plate. The coal screening device has the advantages that the probability that the screening holes are blocked is reduced, and the coal screening effect is improved.

The invention discloses a structure for preventing a heat dissipation material from overflowing based on power semiconductor application. The structure comprises a power semiconductor module; the radiator is attached to the power semiconductor module and is used for radiating heat of the power semiconductor module; the heat dissipation material is arranged between the power semiconductor module and the heat sink and is used for conducting heat energy generated in the power semiconductor module to the heat sink; and the elastic sealing part is arranged between the power semiconductor module and the radiator by surrounding the periphery of the heat dissipation material so as to seal the heat dissipation material in a vacuum sealing cavity defined by the power semiconductor module, the radiator and the elastic sealing part and prevent the heat dissipation material from overflowing. The closed and vacuum structure of the invention can ensure that the heat dissipation material stably exists between the power device and the radiator and does not overflow, thereby ensuring that the external thermal resistance of the device is stable and reliable in the whole life cycle, and ensuring the service life and safety of the device.

The utility model relates to the technical field of glass fiber reinforced plastic cover plates, and provides an arched glass fiber reinforced plastic cover plate which comprises a head cover body, a tail cover body and a plurality of connecting cover bodies, the connecting cover bodies are located between the head cover body and the tail cover body, the adjacent connecting cover bodies are fixedly connected with each other, the connecting cover bodies are fixedly connected to the head cover body, and the tail cover body is fixedly connected to the connecting cover bodies. First sealing rings and supporting beams are arranged between the head cover body and the connecting cover bodies, between the adjacent connecting cover bodies and between the connecting cover bodies and the tail cover body, and the head cover body, the tail cover body, the connecting cover bodies and the first sealing rings are all located above the supporting beams. By means of the technical scheme, the problem that in the related technology, gas is likely to overflow from the connecting gap between the adjacent cover plates is solved.

The present invention discloses an underground waterproof system and a construction method thereof, comprising a drainage mechanism, a water storage mechanism and a waterproof mechanism placed under a basement, wherein the drainage mechanism is placed directly above the water storage mechanism and is interconnected with the water storage mechanism; the drainage mechanism comprises a drainage channel and a drainage switch placed on the drainage channel; the water storage mechanism comprises a water reservoir and an overflow channel placed above the water reservoir and connecting the water reservoir and the drainage channel; the waterproof mechanism is placed directly below the water reservoir; the water reservoir is an inverted cone structure; the overflow channel is placed at the top of the water reservoir, and an overflow switch is provided in the overflow channel; the waterproof mechanism is connected with the water reservoir; the drainage channel and the overflow channel are connected by a three-way pipe; the drainage channel is placed on both sides of the overflow channel and is inclined downward relative to the overflow. The present invention has a simple structure, is easy to control the drainage flow and flow rate, has a good drainage effect, and has a high overall strength. It not only improves the waterproof performance but also can ensure the safe use of the first floor of the building. It is highly practical and easy to promote.

The utility model belongs to the field of food cooking equipment, and relates to an outdoor oven with a smoking function, which comprises an oven body. A smoke generator is arranged in the upper cover, a first air inlet is formed in the middle of the lower end face of the fuel box, the lower end of the support is sunken downwards to form a smoke buffering area, a second air inlet is formed in the position, corresponding to the smoke buffering area, of the outer cover, and the smoke buffering area is arranged below the fuel box and communicated with the second air inlet and the first air inlet. The device has the advantage of being capable of effectively reducing smoke overflow.

The utility model discloses a dry powder material unloader which comprises a platform plate, a hoisting mechanism, a telescopic protective cover cylinder and a blanking cylinder head, the platform plate is horizontally arranged at the high discharging end of a belt conveyor, a bearing top cylinder is vertically fixed on the platform plate, a top opening of the bearing top cylinder is used for bearing discharged materials of the belt conveyor, and the telescopic protective cover cylinder is arranged on the blanking cylinder head. The top end of the telescopic protective cover cylinder is communicated with a bottom opening of the bearing top cylinder; the telescopic protective cover barrel can stretch and retract in the vertical direction to adapt to the heights of different material piles; the discharging barrel head coaxially communicates with a bottom opening of the telescopic protective cover barrel, and the hoisting mechanism drives the discharging barrel head to move up and down in the axis direction of the telescopic protective cover barrel. According to the dry powder material unloading machine, the telescopic protective cover cylinder is adopted for protecting falling of dry powder materials, and raised dust is reduced.

The invention discloses a synchronous well cementation type radial horizontal well drill bit, and relates to the technical field of well drilling drill bits, the drill bit comprises a drill bit main body, the drill bit main body comprises an operation end, the top of the operation end is provided with a connecting shaft leading into the operation end, the connecting shaft is of a hollow structure, and the tail end of the connecting shaft is connected with a cutting end. The inner cutting teeth and the outer cutting teeth cut rock chippings, so that drilling is conducted, water is injected into a liquid inlet pipe, water flow is injected into the cutting end, a stratum becomes muddy water after meeting water, the drill bit body discharges the muddy water, after work of the drill bit body is completed, well cementation cement is injected, and the check pad seals the control shaft under the pressure effect; well cementation cement can only flow out from the through hole in the outer wall of the control shaft, the gap between the outer wall of the protective cover and the inner wall of a drilling well is gradually filled with the well cementation cement, after pouring is completed, the drill bit body is separated from the protective cover, and the well cementation cement and the protective cover form a retaining wall together with solidification of the well cementation cement, so that the inner wall of the drilling well is prevented from collapsing. And the exploration work safety is improved.

The present invention relates to the technical field of air permeability detection, and in particular to a sweater air permeability detection device, comprising a device body and an operation cabin, wherein the operation cabin covers the detection port of the device body, and a dehumidification module is also installed on the device body in the operation cabin; the dehumidification module comprises an outer cylinder, an air guide cylinder is correspondingly arranged above the outer cylinder, an air suction mechanism is arranged in the air guide cylinder, an air outlet pipe is arranged on the air guide cylinder, a base is fixed at the bottom end of the outer cylinder, a plurality of air inlets are opened in the circumferential direction through the lower part of the outer cylinder, a plurality of lifting rods are fixed in the circumferential direction at the top end of the outer cylinder, and a heating mechanism is arranged in the outer cylinder. The present invention can greatly reduce the influence of moisture in the outside air on the air permeability measurement result by installing an operation cabin on the detection port of the device, and the dehumidification module is provided with a plurality of flappers to flap the sweater sample, so that the yarn fibers of the sweater sample are loosened, which is more conducive to the vaporization and overflow of the absorbed moisture therein, thereby achieving a better dehumidification effect.

The application provides an aluminum alloy water-cooled plate laser welding device and method, and relates to the technical field of laser welding.The aluminum alloy water-cooled plate laser welding device comprises a laser, a water-cooled plate laser head and a welding machine tool, the water-cooled plate laser head comprises a laser galvanometer and a multi-spot beam splitting assembly arranged in sequence along the laser transmission direction; wherein the laser galvanometer is used for realizing spiral swinging of the laser emitted by the laser; the multi-spot beam splitting assembly is used for splitting the laser into light spots; the welding machine tool is connected with the water-cooled plate laser head and is used for driving the water-cooled plate laser head to move; the action of the welding machine tool and the laser galvanometer makes a plurality of light spots on the aluminum alloy water-cooled plate form a welding pattern which simultaneously spirally swings. The aluminum alloy water-cooled plate laser welding device realizes multi-point simultaneous welding on the water-cooled plate plane, is beneficial to the overflow of pores, performs stirring welding through rotating light spots, reduces the stirring frequency, is stable in the process, can effectively inhibit the generation of pores and reduce the porosity of the welding bead.

The invention discloses a highly dispersed Pd / HY molecular sieve catalyst with ultra-low loading, and a preparation method and application thereof. After a Pd precursor, a HY carrier and a solvent are uniformly mixed, the pH value of the solution is regulated, the solution is fully stirred and dried overnight, and a molecular sieve-loaded highly dispersed Pd catalyst is synthesized by an electrostatic adsorption method. The preparation method of the invention is simple, and different pre-treatment methods improve the utilization rate of precious metals, which can greatly reduce the amount of Pd and the cost of the catalyst. The catalyst of the invention is applied to the naphthalene hydrogenation reaction, exhibiting excellent catalytic hydrogenation activity and deep hydrogenation performance, and can convert naphthalene into high-value-added decahydronaphthalene by saturated hydrogenation at low temperature, and has good application prospects.

The utility model belongs to the technical field of meridian flapping hammers, and particularly relates to a traditional Chinese medicine meridian flapping hammer which comprises a hammer body composed of a hammer head, a hammer cover, a traditional Chinese medicine bag, a clamping seat, a connecting seat, a spiral spring rod and a hammer handle, an electric heating element is arranged in the hammer head, an air hole is formed in the hammer head, a medicine cavity and a clamping groove are formed in the hammer head, and the clamping seat is arranged in the medicine cavity. A medicine cavity is formed in the hammer head, a traditional Chinese medicine bag used for containing traditional Chinese medicine is placed in the medicine cavity, a hammer cover covers the hammer head, a connecting base is arranged on the hammer head and connected with the hammer handle through a spiral spring rod, a storage battery is arranged in the connecting base, and a heating button, a charging hole and a rubber plug are arranged on the connecting base. According to the traditional Chinese medicine hammer, a patient can conveniently replace different traditional Chinese medicines according to different diseases and requirements, the hammer head and the traditional Chinese medicines can be heated, the use convenience can be improved, and the use effect is improved.

The utility model discloses a kind of humidifying equipment of being convenient for accurate control, including water storage tank, water inlet component, overflow component, second water tank, automatic control component, heater and humidifying component, water inlet component is installed in the side of water storage tank, overflow component is set on the outer lateral wall of water storage tank, second water tank is set in the top of water storage tank, and water pipe is communicated between second water tank and water storage tank, can be stable for second water tank in upper water, automatic control component is installed in the side of second water tank, heater is electrically connected in the side of second water tank, and the side of heater is electrically connected with humidity control mainboard, heater adopts 304 stainless steel casting, heating tube is externally fully surrounded, it is convenient to replace accessory, humidifying component is installed in the side of second water tank. The humidifying equipment of being convenient for accurate control can stably control effective humidity point, it is convenient for water saving, while reducing water adding link.

The invention relates to a high-corrosion-resistance low-porosity MIG welding method for 5xxx high-magnesium rare earth aluminum alloy plates, two 5xxx high-magnesium aluminum alloy thick plates with the same material and thickness are welded, the welding position is the transverse position, a groove is an asymmetric V-shaped groove, the single-edge angle of one side of the groove is 20-35 degrees, the single-edge angle of the other side of the groove is 40-50 degrees, and the bottom gap is 0-2 mm; before MIG welding of the front face, the back face of the 5xxx high-magnesium aluminum alloy thick plate is fixed through a 1-2-degree reversible deformation fixing reinforcing row in the welding direction so as to prevent welding deformation, facilitate bubble overflow in the welding process, improve the welding quality and guarantee the welding effect and the flatness of the surface after welding. And a welding gun is adopted for welding along the asymmetric v-shaped groove, and after welding is finished, the reversible deformation fixing reinforcing row is dismounted. By means of the method, it can be guaranteed that the yield strength of the welded joint is not lower than 198 Mpa, the tensile strength is not lower than 333 Mpa, the welding process is simple and rapid, repeated welding is not needed, the welded joint cannot be softened, and the corrosion resistance of the welded joint is improved.

The main machine structure with the drainage function comprises a main machine bottom cover, a main machine body and a main machine cover, one end of the main machine body is connected with the main machine cover, the other end of the main machine body is connected with the main machine bottom cover, and water leakage holes are formed in the bottom wall of the main machine cover. A first water guide groove is formed in the main machine body, a second water guide groove is formed in the main machine bottom cover, the water leakage hole is communicated with the second water guide groove through the first water guide groove, and a water drainage hole is formed in the bottom wall of the second water guide groove. When the liquid overflows into the main machine cover, the liquid can flow into the first water guide groove through the water leakage hole and then flow into the second water guide groove through the first water guide groove, the electrical safety risk caused by the fact that the structure in the main machine body is infected by the liquid is avoided, the liquid can be conveniently discharged out of the main machine, the structure is simple, and the cost is low.

The utility model discloses an automobile camera, include: the front cover of one end with the installation cylinder of convex, the PCB of assembling in the front cover, the lens of assembling in the installation cylinder of the front cover with AA technology, the stop ring of lens and the outer end surface between the installation cylinder are bonded through UV glue, the back cover, and the front cover corresponding docking and through laser welding are connected into an organic whole, assemble in the back cover and with PCB link's FPC, and one end goes into the back cover and with FPC link's wire harness, wherein, the lens is assembled to the front cover after the back cover and the front cover laser welding connection, still be equipped with the vent hole on the back cover, and the vent hole is sealed by the interference fit of sealing plug after the completion of heat curing. The utility model discloses an automobile camera, and the vent hole is set up on the back cover, and the gas inside is convenient for heat curing UV glue and exports, can conveniently adopt the assembly process of first laser welding and connecting into an organic whole of the front cover and the back cover, and then AA technology assembly lens.

The invention discloses an infiltration device for a waterproof and breathable membrane, comprising an infiltration box, a mounting frame, a base membrane roller, a guide roller, a prepreg tank, an infiltration roller, a main infiltration chamber tank, a clamping roller, a glue tank, a drain pipe, a processing table, a conveyor belt, a dust suction processing component and a flattening component. A mounting frame is welded and fixed on the top outer wall of one side of the infiltration box, and a base membrane roller is placed and installed on the top outer wall of one side of the mounting frame. Prepreg tanks are distributed on the inner walls of both sides of the infiltration box, and guide rollers are rotatably installed on the outer walls of the prepreg tank and one end of the mounting frame. The arrangement of the prepreg tank and the main infiltration chamber tank in the infiltration structure of the invention makes the surface of the film more evenly infiltrated, and the extension of the infiltration chamber immersion liquid length is conducive to the overflow of bubbles during the infiltration process of the breathable membrane, thereby improving the quality of the finished product of the waterproof and breathable membrane; the arrangement of the dust suction processing component can realize the cleaning of dust and impurities on the surface of the waterproof and breathable membrane, thereby improving the quality of the finished product of the waterproof and breathable membrane.