1226 results about "Spiral flow" patented technology

The invention belongs to the technical field of industrial automation control, and particularly relates to a dynamic optimization control method and system for multi-component batching of a paste making machine, and the method comprises the steps: generating a characteristic waveform spectrum corresponding to a residue molecular structure; dynamically generating electric lubricating medium parameters containing the electroosmotic liquid concentration and the release rate; triggering a low-frequency vibration module of the material layer to generate vibration waves, and enabling the solution and the vibration waves to form a molecular-level synergistic stripping effect; calculating a nanoparticle dispersity index, and generating an inverse gradient mixing instruction when the index exceeds a threshold value; activating a hot vortex ring in a spiral flow guide convex pattern area and establishing a directional heat energy migration channel; and verifying the dynamic equilibrium state of the temperature of the paste core area and the viscoelasticity of the target formula, and triggering a phase lock control signal to terminate the parameter adjustment chain when the energy consumption rate reaches a stable interval. According to the invention, the problems that the transition period during formula switching is prolonged and the phase differences among the execution mechanisms are difficult to match in real time due to a traditional staged regulation and control mode are solved.

The invention discloses equipment and a method for preparing spray condensation microcapsules, and relates to the technical field of spray condensation microcapsule preparation, the equipment comprises a melting homogenizing kettle and a condensing tower, a spray head is arranged in the condensing tower, and a movable spray mechanism used for enabling the spray head to move circumferentially and swing back and forth at the same time is mounted on the condensing tower. Through the arrangement of the movable spraying mechanism, the spraying head can spray material liquid drops in the condensing tower in a back-and-forth swinging manner while moving circumferentially, so that the material liquid drops can be uniformly dispersed in a wider area and can be in contact with more cold air, local supercooling or superheating is avoided, and a more uniform cooling effect is obtained; meanwhile, through the matched arrangement of the spiral blades, cooling airflow can spirally flow and be uniformly distributed, the gas-liquid contact area is increased, the gas-liquid contact time is prolonged, gas-liquid exchange is more sufficient, finally, it can be ensured that each material liquid drop can be sufficiently cooled, and the embedding efficiency and the quality of microcapsules are effectively improved.

The water conservancy construction drainage device comprises a slag collecting cylinder, an outer cylinder, an inner cylinder and a connecting cylinder, the inner cylinder is fixed to the top of the inner wall of the outer cylinder and coaxially arranged, the connecting cylinder is a circular truncated cone cavity and fixed to the bottom of the outer cylinder, the connecting cylinder is fixed to the top of the slag collecting cylinder, and spiral flow guide fins are arranged on the inner wall of the outer cylinder; a fixing ring is fixedly connected to the position, close to the top, of the surface of the outer cylinder, a water inlet is fixedly connected to the top of the fixing ring and is of a gradually-shrunk flow guide structure, one end of the water inlet extends into the outer cylinder in the tangential direction, and the bottom of the isolation cylinder communicates with a filter cylinder which is obliquely installed at the bottom of the isolation cylinder. One side in the filter cartridge is communicated with a sand collecting box, and a plurality of layers of self-adaptive filter screens are arranged in the filter cartridge. The drainage device for water conservancy construction relates to the technical field of water conservancy drainage, and can reduce blockage of the filter screen, improve the filtering effect, prevent fine silt from entering the pump body and ensure smooth drainage at the same time.

The invention discloses a wellhead natural gas compressor cylinder body structure, a compressor and a working method of the compressor, and relates to the technical field of compressors, the cylinder body structure comprises a cylinder barrel, the cylinder barrel comprises an outer cylinder barrel and an inner cylinder barrel, the inner cylinder barrel is embedded in a center hole of the outer cylinder barrel, and a piston cavity of the cylinder barrel is formed by a center hole of the inner cylinder barrel; the inner wall of the outer cylinder barrel and the outer wall of the inner cylinder barrel are each provided with a spiral groove with a semi-annular cross section, the spiral grooves of the outer cylinder barrel and the outer wall of the inner cylinder barrel define a spiral flow channel which extends in the axis direction of the cylinder barrel, the cross section of the spiral flow channel is annular, and the spiral flow channel is provided with a medium leading-in hole and a medium leading-out hole which are located in the surface of the outer cylinder barrel. The compressor comprises the cylinder body structure, and the working method is the working method of the compressor. According to the scheme, the temperature difference of different positions of the inner wall of the cylinder can be effectively reduced, the purposes of reducing air leakage of a piston ring and optimizing the volume of the compressor are achieved, and the purposes of reducing deformation of different positions of the inner wall of the cylinder and optimizing vibration in the working process of the compressor are achieved.

The invention provides a modularized flow guide type multi-stage pump, and belongs to the technical field of water pumps. The modularized flow guide type multi-stage pump comprises a pump body assembly and a driving motor, the pump body assembly is formed by sequentially connecting a pump head pattern plate, a multi-stage pump shell, a multi-stage flow guide module set and a water retaining sealing cover, the pump head pattern plate is adjustably connected with a connecting end cover of the driving motor through a long screw rod, and the stage number of the pump can be adjusted by increasing or decreasing the number of the flow guide shells. Different lift requirements are met; the multi-stage flow guide module group is mainly composed of a water inlet flow guide shell, a transmission flow guide shell and a water outlet flow guide shell, a closed impeller is arranged in each flow guide shell to form an independent flow guide module, fluid is guided by spiral flow guide blades between the flow guide shells to orderly flow and smoothly transmit, and turbulent flow eddy current loss is reduced; and the water retaining sealing cover realizes double leakage prevention through a stepped sealing flange and mechanical sealing. The high-lift and high-flow pump has the advantages of being easy to disassemble, assemble and maintain, modularized and flexible to adjust, low in energy loss, high in lift, high in flow and high in sealing performance.

The invention discloses a marine sewage treater and a sewage treatment system, and relates to the technical field of sewage treatment.The marine sewage treater comprises a tank body, the tank body is provided with a sewage inlet, a purified water outlet and an oil stain outlet, a center cylinder and a spiral flow guide pipe are arranged in the tank body, and the top end of the spiral flow guide pipe is communicated with the sewage inlet; the bottom end of the spiral flow guide pipe is communicated with the central cylinder, a partition plate is fixedly arranged in the tank body, the spiral flow guide pipe and the central cylinder both penetrate through the partition plate, the partition plate is of a net surface structure, a filler layer is arranged in the tank body and located above the partition plate, and the purified water outlet is communicated with the space below the partition plate. And the oil stain outlet is formed in a position close to the top of the tank body. According to the device, oil stains and other suspended impurities in the flue gas washing water are efficiently and reliably cleaned, and it is guaranteed that the treated water quality meets the emission standard, so that the marine environment is protected.

The utility model relates to a detachable vibration feeding disc for micro drill machining, which comprises a material receiving shovel arranged at the top of the vibration feeding disc, a spiral slide way is arranged on one side of the material receiving shovel, the inner side of the spiral slide way is fixedly connected with the vibration feeding disc, a spiral flow limiting rail is fixed on the outer side of one end of the spiral slide way, and the flow limiting rail is fixedly connected with the vibration feeding disc. A spiral collecting box is arranged below the flow limiting rail, a through hole is formed in the vibration feeding disc, and the through hole is located in the bottom of the collecting box. When the device works, materials in a spiral slide way and a flow limiting rail easily fall off in the vibration feeding and conveying process, the falling materials can enter a collecting box, the materials in the collecting box can slide downwards and make contact with one side of a V-shaped baffle, the baffle can be driven to rotate under the action of the gravity of the materials, and therefore the materials can be conveyed into the collecting box. And the falling materials can return to the vibration feeding disc again through the through holes, so that the device can conveniently collect the falling micro drill handle parts in the feeding and conveying process and throw the micro drill handle parts into the vibration feeding disc again.

The invention discloses a casting ball production line metal mold preheating device for high-quality copper casting manufacturing, and relates to the field of casting manufacturing, the casting ball production line metal mold preheating device comprises a mold, a heat exchange mechanism, a heat pipe, a cold pipe and a cold and hot switching conveying mechanism; the device has the advantages of being reasonable and simple in structure, low in production cost and convenient to install, efficient circulating preheating of hot liquid is achieved through cooperative operation of the conveying pump, the heat pipe, the cold pipe and other components, the hot liquid fully exchanges heat with the mold in the heat exchange annular groove through the spiral flow guide pieces, and the preheating efficiency is greatly improved; the valve element is driven by the oil cylinder to move to achieve cold and hot passage switching, the function switching from preheating to cooling of the mold can be rapidly completed, the smoothness of the production process is guaranteed, and the production period is shortened; in the cooling process, cold liquid can flow back to the hot liquid cavity after absorbing heat of the mold, cyclic utilization of the cooling liquid is achieved, energy waste is effectively avoided, the production cost is reduced, and the resource utilization rate is increased.

The invention relates to the technical field of agricultural machinery, and discloses an adjustable soil covering device for ginger planting, comprising: a mobile vehicle, the front side of the bottom of which is provided with a front wheel matched with the curved surface of a ridge, and the rear side of which is provided with a rear wheel with a ditch edge profiling structure; the central mixing bin is integrally formed in the middle of the mobile vehicle chassis, and a rotatable scattering disc is coaxially arranged in the central mixing bin. The mixing process of soil and fertilizer is innovatively integrated in the central mixing bin, and the fertilizer is sucked from a storage box through a Venturi negative pressure generator in a pneumatic conveying mode; the high-pressure fan provides airflow power to feed the materials into the mixing bin, non-blocking automatic fertilizer supply is achieved, the fertilizer and soil intersect in the bin, the materials are guided to spirally fall down by means of the tapered spiral flow guide column, the mixing path is prolonged, meanwhile, the ultrasonic vibration plate continuously vibrates to form lumps, it is guaranteed that the two materials are highly and evenly mixed, and the mixing efficiency is improved. And a mixed substrate with stable quality is provided for subsequent precise soil covering.

The utility model relates to the technical field of coal tar processing equipment, and discloses an oil-water separator for coal tar processing, which comprises a separation tank, the feeding mechanism is arranged at the upper end of the separation tank; the discharging mechanism is arranged at the lower end of the separation tank, the separation tank comprises a tank body, and an oil outlet is formed in one end of the inner side wall of the tank body. According to the oil-water separation tank, the auxiliary water and oil mixture mixing and layering structure is arranged, namely, the spiral flow guide cover is arranged at the top of the tank body and matched with the feeding end, so that a water and oil mixture entering the tank body and a chemical reagent capable of promoting oil-water separation can be discharged after being spirally guided by the spiral flow guide cover, and a stirring mechanism at the bottom of the tank body is matched; according to the oil-water separator, mixing of a chemical reagent and a water-oil mixture can be promoted, rotation of the stirring paddle is stopped after mixing, the water-oil mixture entering the tank body can be rapidly mixed and layered, heavy water in the water-oil mixture can rapidly sink to the bottom, light oil in the water-oil mixture can rapidly float on the water-oil mixture, and therefore rapid oil-water separation is achieved.

The invention belongs to the field of dies, and particularly relates to a cam cover die-casting die with a spiral cooling structure, a die table mechanism comprises a lower die table and an upper die table which are combined, and a lower die core and an upper die core which are matched with each other are arranged in the lower die table and the upper die table; the pouring mechanism comprises a pouring end seat arranged on the upper mold table, a pouring channel penetrating through the upper mold core is formed in the pouring end seat, and the other end of the pouring channel penetrates into a closed cavity of the lower mold core and the upper mold core; the track mechanism comprises a track table arranged on the outer side of the cavity; the multi-layer structure of the spiral pipe is in direct contact with the outer wall of the cavity, the spiral flowing path of a cooling medium is combined, the heat exchange area and cooling uniformity are increased, the casting deformation risk is reduced, a temperature sensing end base integrated temperature sensor monitors the temperature of the cavity in real time, and the flow of the cooling medium is dynamically adjusted in cooperation with a deformation piece driven by an air bag piece. And intelligent control of slow-cooling anti-cracking in a high-temperature area and rapid-cooling shaping in a low-temperature area is realized.

The invention discloses a powder mixing device for metal powder 3D printing, relates to the technical field of metal powder 3D printing, and aims to solve the technical problem that powder with large quality difference is difficult to mix, and the powder mixing device comprises a case, a powder mixing mechanism arranged on the left side of the case, a stirring assembly, a transmission assembly and a diffusion conveying assembly. A spiral pipe and a spiral piece of the stirring assembly can be flexibly combined into a conical spiral shape or decomposed into irregular stirring blades, aiming at powder with large and small mass difference, the spiral pipe and the spiral piece forcibly mix powder with different densities through spiral flow to prevent layering, and the spiral piece softly stirs light powder to ensure global mixing; a curved-surface fan blade diffusion disc of the diffusion conveying assembly cooperates with a square hollowed-out spiral pipe, mixed powder is rapidly conveyed during anticlockwise rotation, bottom deposited powder is diffused during clockwise rotation, a closed-loop mixing path is formed, powder retention is reduced, the conveying efficiency is improved, and the blocking risk is reduced.

Belonging to the field of petrochemical engineering, the invention discloses a catalytic slurry oil purification device, which comprises a tank body, and a feed end and a discharge end respectively arranged at two ends of the tank body. An upper partition plate and a lower partition plate are fixedly connected to the inner wall of the tank body, a discharging opening is formed in the upper partition plate, and a feeding opening is formed in the lower partition plate; the interior of the tank body is divided into three independent cavities by the upper partition plate and the lower partition plate; according to the scheme, the filter element is sleeved with the hollow cylinder, and the rotatable first spiral flow deflector is further arranged between the inner wall of the hollow cylinder and the outer wall of the filter element; a rotatable first spiral flow deflector is further arranged between the inner wall of the hollow cylinder and the outer wall of the filter element; a shear force generated by rotation of the first spiral flow deflector can prevent a filter cake on the surface of the filter element from forming a compact thick layer; a filter cake layer can be controlled within a relatively thin thickness range, and the rising speed of the pressure difference is delayed, so that the operation duration of a single filtering period is prolonged; and the single-time continuous treatment capacity of the device is greatly improved.

The utility model relates to the technical field of petrochemical equipment, in particular to a serial pipe reactor with a spiral guide jacket, which comprises a plurality of straight sleeves and a plurality of bent pipes, each straight sleeve comprises an inner pipe and an outer pipe, and the inner pipe is arranged in the outer pipe in a penetrating manner to form an annular straight jacket runner; the inner pipes of the multiple straight sleeves are connected in series through the bent pipes to form a medium flow channel for conveying and reacting reaction materials, the straight jacket flow channels of the multiple straight sleeves are connected in series to form a cooling flow channel for conveying cooling media, spiral flow deflectors are arranged in the straight jacket flow channels, the inner sides of the flow deflectors are fixed to the outer walls of the inner pipes, or the outer sides of the flow deflectors are fixed to the inner walls of the outer pipes. A plurality of notches are formed in the inner side and / or the outer side of the flow deflector in the spiral direction. The flow deflectors enable a medium in the jacket to spirally flow, the medium passing through the notches axially flows, the outer wall of the inner pipe and / or the inner wall of the outer pipe are / is scoured, and when fluids in different directions meet, turbulent flow is formed, laminar deposition is avoided, and the heat exchange and reaction effects are improved.

The invention discloses a spline shaft high-speed grinding and cooling device and method, and relates to the technical field of grinding and cooling devices.The spline shaft high-speed grinding and cooling device comprises a workbench, a grinding assembly, a clamping and rotating assembly, a conveying assembly and liquid guiding mechanisms, an encircling structure is formed by the two symmetrically-arranged liquid guiding assemblies, and the design that the center extension line of a jet flow opening accurately points to a grinding position is matched; the problem that a traditional fixed nozzle cannot focus on a grinding area is solved, cooling liquid can directionally act on a grinding contact area, and it is guaranteed that grinding points are effectively covered all the time in the spline shaft machining process. By means of the synergistic effect of the spiral liquid guide structure and the high-speed rotation of the spline shaft, cooling liquid is continuously accelerated in the gradually-shrunk flow channel to form high-pressure spiral flow so as to effectively break through an air barrier formed by high-speed rotation on the surface of the spline shaft, and the centrifugal acceleration effect of the spiral flow is combined with the pressurization effect of the gradually-shrunk flow channel of the protective cover. And the spraying kinetic energy of the cooling liquid is greatly improved.

The invention discloses a support installation angle measuring device for photovoltaic power generation, which relates to the technical field of measurement and comprises an installation position structure, a magnetic field control assembly and a measuring assembly. The installation position structure is arranged at the connection position of a stand column and a cross beam of the photovoltaic support, the connection point of an inclined supporting rod and a main frame and the connection area of a base and a foundation, under the cooperation of the magnetorheological fluid cavity assembly and the magnetic field control assembly and the design of a spiral flow guide groove and a cone frustum cavity, the fluid distribution uniformity is improved, and under the action of a magnetic field, the fluid distribution uniformity is improved. The spiral flow guide grooves guide the magnetorheological fluid to form spiral flow and cooperate with a rotating magnetic field, the support fixing effect is remarkably enhanced, and when the support deviates due to external force, the micro stress sensor of the magnetorheological fluid cavity reversely deduces the angle through shear stress changes and feeds the angle back to the magnetic field control assembly for real-time correction. Therefore, stress is released and deformation is corrected under extreme working conditions such as strong wind and earthquakes, and the accuracy and response speed of angle control and measurement of the support are greatly improved.

The invention relates to the technical field of high-power femtosecond laser manufacturing, and discloses a high-power industrial femtosecond laser water cooling structure and a manufacturing method thereof. Comprising the steps that any one of a variable cross-section spiral flow channel, a bionic fin flow channel or a micro-channel array is directly machined in a machine shell water-cooling plate through the five-axis linkage precision machining technology or the micro-nano machining technology, or the printer shell water-cooling plate is integrated through the metal additive manufacturing technology; a reflector base, a heat dissipation chute and a cooling water channel are integrated in the machining process of the water cooling plate of the machine shell; carrying out material and surface treatment process operation; assembling process operation is carried out, a reflecting mirror base is matched with a mortise and tenon joint structure and a machine shell water-cooling plate through high-precision positioning pins, the reflecting mirror base and the machine shell water-cooling plate are rigidly connected in a vacuum brazing or laser welding mode, and a light guide side plate and a runner cover plate are designed into standard modules; the light guide side plate and the runner cover plate are quickly assembled through magnetic attraction positioning and spring buckles.

The utility model discloses a soil vibration screening instrument, which belongs to the technical field of soil screening, and a vibration screening box comprises a vibration adjusting frame and a multi-layered spiral screening assembly, the vibration adjusting frame comprises a vibration tray, a screw rod, a central column and a fixing ring; the multi-layer spiral screening assembly comprises a single-pipe spiral flow guide channel and a multi-layer spiral screening ring which are communicated from top to bottom, the single-pipe spiral flow guide channel is arranged in the annular space and fixedly connected to the top of the center column, and the multi-layer spiral screening ring is connected to the center column in a penetrating and sleeving mode and connected to the screw. According to the screening instrument, screening parameters can be adjusted in real time, so that the screening precision and the screening efficiency are improved, and the cost consumption is reduced.

The invention discloses a new energy automobile electric compressor preheating structure and a control method, and relates to the technical field of new energy automobile heat management. The method comprises the three steps of heat source collaborative recovery, heat demand dynamic distribution and self-starting collaborative execution, specifically, motor stator waste heat and compression refrigerant waste heat are recovered through a heat conduction fin array and a spiral flow channel, and a shared heat conduction medium is guided in; based on a fuzzy PID controller, a heat flow guide valve is dynamically adjusted to distribute heat flow according to the lubricating oil way temperature, the suction superheat degree and the shell temperature; the generator is triggered to be rapidly heated in a locked-rotor mode at the ultralow temperature, the preheating requirement is pre-judged in combination with a heat attenuation model, the structure comprises a temperature sensor set, a three-way heat flow guide valve and an embedded MCU processor, efficient waste heat utilization is achieved, external energy consumption is not needed, preheating energy consumption is effectively reduced, and the low-temperature starting performance and operation stability of the compressor are remarkably improved.

The invention relates to the technical field of ascites drainage, in particular to an ascites drainage device which comprises a puncture tube, the output end of the puncture tube is fixedly connected with a one-way valve, the output end of the one-way valve is fixedly connected with a separation tube, a drainage opening is formed in the bottom of the separation tube, and the output end of the drainage opening is fixedly connected with a drainage tube. The output end of the drainage tube is fixedly connected with a liquid accumulation bag, a filter cartridge is arranged in the separation tube, and the input end of the filter cartridge is communicated with the input end of the separation tube. The spiral flow deflectors which are uniformly arranged along the central axis are arranged at the input end of the filter cartridge, so that ascites can be guided to form a spiral flowing state, and solid substances are always kept in dynamic distribution of'spirally advancing along the wall 'by virtue of centrifugal force; meanwhile, when the filter cartridge is blocked and the pressure rises to a preset value, the second T-shaped piston rod can extrude the titanium alloy spring to slide, so that ascites enters the hole-free groove to expand the internal space of the filter cartridge, the pressure is balanced, and time is bought for cleaning blockages.

The invention discloses a high-pressure hydrogen pressure reducing valve with a spiral flow channel structure. The high-pressure hydrogen pressure reducing valve comprises a valve body, a sealing end cover, a needle-shaped valve element and an inlet end cover. A through cavity is formed in the center of the valve body in the axial direction. The sealing end cover, the needle-shaped valve element and the inlet end cover are sequentially and coaxially assembled and connected into the cavity of the valve body from top to bottom. A gas outlet channel is arranged on the side wall of the valve body and located between the sealing end cover and the needle-shaped valve element, a gas inlet channel is arranged at the bottom of the inlet end cover, and gas enters from the gas inlet channel and is exhausted through the gas outlet channel. The needle valve has the advantages of being simple in structure and long in service life, and the two spiral flow channel notches are evenly distributed in the outer surface of the needle valve element; due to the design of the spiral flow channel, the hydrodynamic performance is effectively improved, the reliability of the system is enhanced, and meanwhile the energy utilization rate and the impact resistance are improved; in addition, the pressure of hydrogen at the outlet of the valve body can be effectively controlled through the design of the adjusting channel, and the pressure is still kept relatively stable under extreme conditions.

The embodiment of the invention provides a self-adjusting shielding heat preservation device for a micro reactor and an operation method of the self-adjusting shielding heat preservation device, and relates to the field of nuclear reactors. The reactor comprises an outer shell, an inner shell, a control rod and a spiral flow channel, the inner shell is sleeved with the outer shell, an outer air inlet hole and an outer air outlet hole are formed in the outer shell, an inner air inlet hole and an inner air outlet hole are formed in the inner shell, a reaction cavity is formed in the inner side of the inner shell, and the spiral flow channels are arranged on the outer side of the inner shell and the inner side of the outer shell. The control rod is rotatably arranged on the side wall of the inner shell in a penetrating mode and located on the inner side of the outer shell, the control rod is provided with a control area and a non-control area, and the spiral runner is arranged between the inner shell and the outer shell; the outer gas inlet hole is used for inputting cooling gas, so that the cooling gas sequentially passes through the inner gas inlet hole, the reaction chamber, the inner gas outlet hole and the spiral flow channel and then is discharged from the outer gas outlet hole, and the cooling gas is used for flowing along the spiral flow channel and enabling the control rod to rotate so as to drive the control region to rotate into or out of the reaction chamber.

The anti-rotation flow guide integrated radial seal comprises an anti-rotation flow guide structure and a plurality of sealing teeth, the anti-rotation flow guide structure and the sealing teeth are sequentially arranged on the inner surface of a sealing stator in the flowing direction, the anti-rotation flow guide structure is installed at an inlet of the sealing stator, high-speed circumferential rotational flow caused by pre-rotation of an air inlet can be weakened, and the anti-rotation flow guide effect is improved. And the pressure distribution between the air inlet and the adjacent sealing teeth of the anti-rotation flow guide structure can be changed, so that the excitation is reduced, and the leakage rate is reduced. Wherein the spiral line type anti-rotation flow guide structure is composed of a plurality of spiral flow guide plates distributed in the circumferential direction, a millimeter-level spiral deep groove area is designed at an inlet, the flow pattern of airflow is changed through the hydrostatic pressure effect, the circumferential rotational flow velocity of the surface of the rotor is reduced, and the kinetic energy dissipation of the airflow is increased. Or the spiral line type anti-rotation flow guide structure is a boss with a spiral flow guide groove, a reasonable groove type structure is designed according to the rotation direction of the rotor and the working condition so as to change the pressure distribution of the airflow, and the throttling and flow guide effects are achieved.

The invention discloses an active and passive noise reduction silencer, and relates to the technical field of noise reduction silencers, the active and passive noise reduction silencer comprises a noise reduction pipe, and a honeycomb turbulent flow noise reduction assembly, a spiral injection speed reduction assembly and a kinetic energy turbine conversion assembly are arranged in an inner cavity of the noise reduction pipe in the airflow flowing direction; efficient noise reduction and stable operation are realized through three processes of multi-stage speed reduction, active and passive cooperative noise reduction and kinetic energy conversion; through conical expansion of an inlet section pipeline, rectification and backflow interference of a honeycomb turbulent flow noise reduction assembly, and extension paths of a porous sound absorption confluence module and a spiral flow guide turning module of a spiral injection speed reduction assembly, multi-stage stepped speed reduction is formed, air flow kinetic energy and impact force are gradually reduced, and noise is further reduced; the porous sound absorption confluence module reduces airflow vibration noise through shunting and multiple sound absorption, the kinetic energy turbine conversion assembly converts airflow kinetic energy into mechanical kinetic energy, residual noise is accurately counteracted in cooperation with active noise reduction of the tail end of the noise reduction section pipeline, and the noise reduction effect is greatly improved through active and passive combination.

The invention relates to the technical field of paper diaper production, in particular to a composite sticker processing device for paper diaper production. According to the composite paste processing device for paper diaper production, the deviation rectifying mechanism, the punching mechanism and the embossing mechanism are installed on the rack, the embossing mechanism comprises the pre-pressing piece and the embossing piece which are installed on the rack, the position of a composite paste material is rectified through the deviation rectifying mechanism, and therefore the position of the composite paste material is corrected; impurities on the punched composite pasting material are cleaned and exhausted through the pre-pressing piece, a spiral flow channel, a spiral heat conduction piece, a heating piece and concave-convex textures are arranged on a pressing roller of the embossing piece, it is guaranteed that the composite pasting material is evenly heated in the embossing process, punching, embossing and pasting of the composite pasting material are synchronously carried out, and the composite pasting material is not prone to being damaged. And the stability and the consistency of the material in the pressing process are ensured.

The invention provides a three-dimensional noise reduction structure system drainage pipe design method, and belongs to the technical field of building drainage pipes. Discretization analysis is carried out on a three-layer structure of a spiral flow guide structure PVC pipe inner wall, an asymmetric butyl rubber damping interlayer and gradient density foamed aluminum by establishing a three-dimensional noise reduction model; and constructing a vibration transfer matrix and a noise reduction key point matrix. A spiral flow guide structure is optimized through hydraulic calculation, thickness distribution of a rubber damping layer is determined through acoustic impedance testing, foamed aluminum porosity gradient design is carried out, and a small-section noise reduction cross-correlation index is introduced to evaluate the synergistic effect of adjacent structures. The optimal material ratio is solved through a three-dimensional noise reduction optimization equation set, the noise reduction effect is predicted in combination with an acoustic response deep learning model, standardized module design is finally formed through miniaturized sample piece test verification and parameter correction, and organic unification of full-band noise reduction and modular design of the drainage pipe is achieved.

The utility model relates to a smooth copper shell cold roll, which comprises an inner core component and a copper shell component coaxially connected outside the inner core component, a liquid inlet channel and a liquid outlet channel are respectively arranged at two ends of the inner core component, and an annular cavity is arranged in the copper shell component. The liquid inlet channel, the annular cavity and the liquid outlet channel are sequentially communicated and form a one-way cooling flow channel; an impeller rotating along with the liquid inlet channel is installed in the liquid inlet channel and used for driving cooling liquid to flow in the one-way cooling flow channel. Through the design of linkage of the impeller and the roller body, the cooling liquid is driven to flow by using the rotation power of the roller, an external pumping device is not needed, active cooling with zero extra energy consumption is realized, and the energy-saving benefit is remarkable; a spiral flow guide path is matched, so that the heat conduction efficiency and the cooling liquid contact area are greatly improved, and thermal deformation is effectively prevented.

The invention relates to the technical field of construction equipment, and discloses a civil engineering building construction device which comprises a bottom beam column outer protection plate installed outside a building bottom beam. The supporting beam outer protection plate is installed outside the building supporting beam, and the bottom of the building supporting beam is connected with the corresponding positions of the top of the building bottom beam; the pouring mold base is formed by combining two half molds which are arranged in a mirror image mode, the pouring mold base is installed on the upper portion of the building bottom beam, and the outer portion of the pouring mold base is connected with the corresponding positions of the supporting beam outer protection plate through connecting components; and the sinking force dispersing mechanism is used for dispersing sinking force generated in the pouring use process of the pouring mold base. By adding and arranging the synchronous processing mechanism, when top cross beams of buildings such as doors, windows and the like are poured, the mechanism drives mechanical vibration through high-pressure water flow to replace traditional manual vibration, a turnover part in a spiral flow channel impacts a semicircular conduction piece to generate uniform vibration force, and full-range vibration of a pouring cavity is achieved.

The invention discloses a rotor coaxial heat dissipation structure, a fluorine-containing metal-based lubricating composition and application of cooperation of the rotor coaxial heat dissipation structure and the fluorine-containing metal-based lubricating composition in a motor rotor shaft, and the rotor coaxial heat dissipation structure and gradient functional coatings sequentially formed on the surface of the motor rotor shaft comprise a bottom layer used for leading out winding heat; the transition layer is used for solid lubrication and PFPE heat triggering slow release; the surface layer is used for reducing friction and repairing microcracks; a micro-pit array and a spiral flow guide groove which are machined through laser are formed in the outer portion of the surface layer. According to the invention, a gradient functional coating three-layer synergistic structure is adopted to construct a gradient framework of a bottom layer (a heat conduction band nano reinforced phase), a transition layer (oriented whiskers and slow-release lubrication) and a surface layer (magnetic response self-repairing), so that the problem that heat management, wear resistance and self-repairing functions of a traditional coating are difficult to be compatible is solved; and meanwhile, through the combined design of the laser micro-pit array (liquid storage and resistance reduction) and the spiral flow guide groove (strengthening the flowing of the cooling medium), the heat dissipation efficiency is cooperatively improved.