5825 results about "Centrifugal force" patented technology

The invention belongs to the technical field of drying equipment, and particularly relates to a double-cone vacuum dryer and a silver nitrate drying method.The double-cone vacuum dryer comprises a stock bin, a gas circuit mechanism, a heat source mechanism, a first power mechanism, a blowing adjusting mechanism and a second power mechanism; a second power mechanism drives an arc-shaped plate in a blowing adjusting mechanism to rotate back and forth relative to the transfer bin so as to adjust the direction and the flow speed of the hot nitrogen blown out of an upper opening of the transfer bin, and when the arc-shaped plate rotates clockwise, the silver nitrate wet material which is turned upwards under the action of centrifugal force is blown away; the second power mechanism is matched with the blowing adjusting mechanism to adjust the blowing-out direction and the blowing-out flow speed of hot nitrogen in a reciprocating mode, it can be guaranteed that a dry layer on the surface of the silver nitrate wet material is broken, and the problem that the silver nitrate wet material splashes after the dry layer on the surface of the silver nitrate wet material is broken can be solved; the problems that after a drying layer is formed on the surface of the silver nitrate wet material, the internal heat and mass transfer path is lengthened, and the drying efficiency and the drying time are affected are solved.

The utility model relates to a foldable propeller and a cross-medium aircraft with the same, the foldable propeller comprises a propeller hub controlled to rotate, a limiting structure arranged at the end part of the propeller hub and a plurality of blades uniformly arranged around the axis of the propeller hub, and each blade is hinged with the propeller hub; the hinged axis between the paddle and the propeller hub is perpendicular to the rotating axis of the propeller hub, and the limiting structure is located at the front end of the propeller hub in the direction of the pulling force generated when the paddle rotates along with the propeller hub; when the propeller hub rotates, the blades hinged to the propeller hub rotate and unfold under the action of centrifugal force to abut against the limiting structure. When the propeller hub stops rotating, the blades hinged to the propeller hub are folded to be close to the rotating axis of the propeller hub due to self weight or fluid resistance in the underwater flight process. The propellers are configured to be of a foldable structural form, so that the propellers are not prone to being impacted by water flow and damaged, meanwhile, turbulent flow generated when the water flow passes through the propellers is reduced, and the speed and stability of the cross-medium aircraft in the underwater flight process are improved.

The invention discloses an S-shaped micro-channel heat dissipation device with a double-layer turbulent flow structure and a use method, belongs to the field of liquid cooling heat dissipation, and is suitable for heat dissipation of a high-heat-flux device or a heat conduction device. The device comprises a base, a cover plate, a micro-channel body, turbulent flow columns, a flow guide structure, O-shaped sealing rings and quick-screwing connectors, the micro-channel body is provided with S-shaped channels which are vertically symmetrical, the turbulent flow columns are evenly arranged in the centers of the channels, and the top ends of the turbulent flow columns are flush with the end face of the micro-channel body. The turbulent flow columns can be rectangular columns or water-drop-shaped columns which are arranged in a single row or multiple rows at equal intervals and are matched with the flow guide structure to achieve efficient flow division of cold and hot fluid and interlayer heat interaction. Fluid mixing is strengthened through the centrifugal force of the S-shaped channel, a heat boundary layer is destroyed by the turbulent flow columns, and the problems that a traditional straight channel is low in heat exchange efficiency and uneven in temperature distribution are solved. Deionized water or nanofluid is selected as cooling liquid, closed circulation is formed by entering and exiting of the cooling liquid through the quick-screwing connector, and the adaptive scene and the comprehensive performance of the device are further expanded through the multiple rows of turbulent flow columns or the water-drop-shaped turbulent flow columns.

The invention relates to the technical field of blade monitoring, in particular to a long flexible blade real-time monitoring and fault early warning method which comprises the steps that vibration signals of a long flexible blade in the running state are collected, and the vibration signals are subjected to the aerodynamic load, gravity and centrifugal force multi-factor coupling effect; constructing an overdetermined equation set containing a multi-source excitation characteristic based on the blade dynamic model; decomposing the vibration signal by adopting a sparse decomposition algorithm to obtain a signal decomposition result; based on the signal decomposition result, solving the overdetermined equation set to obtain modal parameters of each coupling vibration source; and determining a state monitoring result of the long flexible blade according to the modal parameters of the coupling vibration sources.

The invention discloses a wind turbine blade semi-coupling aeroelastic modeling method considering nonlinear deformation, and belongs to the technical field of fan simulation calculation. In combination with calculation parameters used by three-party software, establishing a blade structured load model and a blade correction aerodynamic model, calculating an aerodynamic load and a structural load, and superposing: superposing the aerodynamic load, the gravity load and the centrifugal force load of the blade as an external load of a nonlinear structure control equation of the blade, and taking the external load as a calculation parameter; according to the method, the blade nonlinear structure model and the semi-coupling simulation process of the three-party wind turbine simulation software are constructed, and under the same simulation environment and load conditions, the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation, so that the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation calculation. The higher-precision non-linear motion response characteristics of the super-long flexible wind turbine blade are calculated, and a good effect can be achieved in the aspects of initial structure design and response evaluation of the large wind turbine blade.

The invention provides a water-air two-domain self-adaptive state switching efficient propelling folding propeller, which comprises a propeller hub, a propeller blade, a propeller blade, a propeller blade and a propeller blade, the N fixed paddles are uniformly distributed on the side wall of the cylinder in the circumferential direction; the inner sides of the fixed paddles are fixedly connected with the outer surface of the side wall of the cylinder; the fixed blades are arranged along the water pushing direction; the outer side of the fixed paddle is bent upwards, and a connecting plate is arranged at the end part of the outer side; the N folding and unfolding paddles are correspondingly mounted at the outer ends of the fixed paddles, and each folding and unfolding paddle comprises a blade and a root ring fixedly connected with the root of the blade; the N rotating joints comprise pin shafts, and the pin shafts penetrate through the connecting holes and the root ring; wherein N is greater than or equal to 3; when the propeller hub rotates and is located above the water surface, the folding and unfolding blades are unfolded under the action of centrifugal force; and when the paddle is located below the water surface, the folding and unfolding paddle is folded under the action of water resistance. The efficient propelling folding paddle has sufficient propelling power in water and is high in water-air transition efficiency. The invention also provides an unmanned aerial vehicle equipped with the efficient propelling folding paddle.

The invention belongs to the technical field of graphite production equipment, and particularly discloses uniformly dispersed mixing equipment for graphite cathode production, which comprises a kettle body, the bottom of the kettle body is communicated with a discharge pipe, and the surface of the kettle body is communicated with a feed pipe; by means of a transmission system composed of the driving ring, the outer gear ring, the gear and the inner gear ring, differential motion is generated between the first grinding block directly driven by the rotating shaft and the second grinding block driven by the rotating ring with the speed changed through the gear, and the differential motion forms strong shearing force in the staggered area of the first grinding block and the second grinding block; the first grinding block and the second grinding block can effectively cut soft aggregate formed by graphite and a coating agent, and meanwhile, the gap between the first grinding block and the second grinding block is gradually reduced along with the distance away from the rotating shaft, so that when materials move outwards under the centrifugal effect, the materials can be subjected to the stage treatment process from coarse crushing to fine grinding, the dispersion uniformity is remarkably improved, uneven coating is avoided, and the service life of the materials is prolonged. And abrasion to equipment caused by one-time excessive grinding is effectively reduced.

The invention belongs to the technical field of oil exploitation, and particularly relates to an oil exploitation device with a gravel filtering function. The oil exploitation device comprises a collecting frame, the inner bottom wall of the collecting frame is fixedly connected with a filtering cylinder through a supporting rod, the upper end of the filtering cylinder is fixedly communicated with two oil conveying pipes, and the two oil conveying pipes are both in butt joint with an oil pipeline; and the centrifugal separation mechanism is used for achieving separation of petroleum and gravel through the effect of centrifugal force, the centrifugal separation mechanism comprises filtering holes formed in the peripheral side wall of the filtering cylinder, and a rotational flow block is rotationally installed in the filtering cylinder. Through the arrangement of the centrifugal separation mechanism and the design that the upper portion of a rotational flow block is inclined and contracts inwards, mixed fluid is guided to form spirally-descending rotational flow, and petroleum is rapidly separated through filtering holes through centrifugal force; and by arranging the gravel conveying mechanism, a separation-conveying continuous operation chain is formed, and the blocking risk caused by gravel accumulation is thoroughly eliminated.

The invention relates to the technical field of magnetic separation, in particular to a magnetic gradient separation fire metal material evidence screening machine and a multistage magnetic field regulation and control method thereof.The magnetic gradient separation fire metal material evidence screening machine comprises a machine body, a feeding pipe and rotating cylinders are rotationally connected to an inner cavity of the machine body, magnetic separation assemblies are installed between the feeding pipe and the rotating cylinders and between the two rotating cylinders, and driven gears are installed on the outer walls of the feeding pipe and the rotating cylinders; according to the multi-stage magnetic separation device, the multi-stage magnetic separation design is adopted, magnetic force sequentially increased from top to bottom of the magnetic separation assembly is combined with centrifugal force generated by rotation of the feeding pipe and the rotating cylinders, and materials are evenly dispersed and make full contact with the magnetic separation assembly; meanwhile, the valve plate assemblies are sequentially opened in the descending process of the abutting blocks, so that the materials sequentially fall down layer by layer, sorting disorder caused by falling of a large number of materials at a time is avoided, the materials can be kept for enough time on each magnetic separation assembly, it is ensured that metal material evidences with different magnetisms are fully adsorbed, and the screening accuracy is greatly improved.

The invention relates to the technical field of rare earth waste treatment, in particular to a solid-liquid separator for rare earth waste treatment, which comprises a discharging frame and a barrel fixedly connected to the top of the discharging frame in a penetrating manner, the rear side of the barrel is communicated with a feeding frame, the bottom of the feeding frame is a symmetrical inclined surface, and the bottom of the barrel is rotatably connected with a porous annular plate along the circumferential direction; and the porous annular plate rotationally penetrates through the bottom of the discharging frame. According to the rare earth waste solid-liquid separation device, reacted rare earth waste is poured into the barrel through the feeding frame and blocked by the material blocking plate, then the double-shaft motor is started to rotate, the porous annular plate drives the rare earth waste to rotate through the material blocking plate, liquid in the rare earth waste is thrown out through centrifugal force, and solid-liquid separation is completed; and the pressing block moves downwards to extrude the rare earth waste, so that water liquid in the rare earth waste is extruded out to prevent liquid left in the rare earth waste from influencing subsequent use, and the solid-liquid separation effect is improved.

The invention provides a cement kiln bypass ventilation and high-chlorine material treatment device, and relates to the technical field of bypass ventilation devices.The spraying mechanism comprises a fixed rotating shaft, the fixed rotating shaft is fixedly installed through a fixed output shaft and a servo motor, and a first bevel gear is arranged on the fixed rotating shaft; a first bevel gear is rotatably mounted on the annular steel tank body, a second bevel gear is engaged with the circumferential surface of the first bevel gear, a third bevel gear is engaged with the circumferential surface of the second bevel gear, a first fixing shaft is rotatably mounted on the second bevel gear, and the first fixing shaft is fixedly mounted on the annular steel tank body. A spiral blade centrifugal separation unit and a rotational flow plate demister fine treatment unit are innovatively integrated in the device, a spiral blade adopts a variable pitch design and is driven by a servo motor, the rotating speed can be adjusted according to the working condition of flue gas, airflow is driven to form a strong rotational flow field, and high-chlorine dust with large particle size in the flue gas rapidly moves towards a tank wall under the action of centrifugal force.

The invention relates to the technical field of plastic processing, and discloses a new energy automobile battery pack heat dissipation structure additive manufacturing preheating device which comprises a preheating box, a rotating mechanism is arranged at the bottom of the preheating box, a lifting mechanism is arranged in the preheating box, and a hollow connector is arranged on the rotating mechanism. And two grooves are symmetrically formed in the hollow connector, a preheating disc is fixedly connected to the outer wall of the top of the hollow connector, and a concentric circle stepped groove is formed in the top of the preheating disc. Additive raw materials are placed in the concentric circle stepped groove of the preheating disc, and the placing disc is rotated, so that the additive raw materials can be intermittently and flatly laid on all kicking surfaces of the concentric circle stepped groove under the cooperation of centrifugal force generated when the fan-shaped stepped plate and the preheating disc rotate, the accumulation condition of the additive raw materials is avoided, and the service life of the additive raw materials is prolonged. Therefore, the additive raw materials are fully heated, and the phenomenon that the additive raw materials are heated unevenly is completely eradicated.

The invention provides a preparation method and application of a foamy copper reinforced aluminum-based composite material, and belongs to the technical field of aluminum-based composite material preparation. According to the foamy copper reinforced aluminum-based composite material, a variable-frequency and variable-power ultrasonic vibration assisted centrifugal casting technology is adopted, strong centrifugal force and the ultrasonic cavitation effect are utilized, so that the biological flowability of aluminum water is improved, the wettability between aluminum and copper is improved, and in combination with the effects of an auxiliary agent and Zn-Al or Sn-Al intermediate alloy, the foamy copper reinforced aluminum-based composite material is obtained. The problem that the binding force of foamy copper and an aluminum matrix is poor is solved, the adopted ultrasonic power is low (smaller than or equal to 1000 W), the preparation technology is simple, the obtained foamy copper reinforced aluminum matrix composite is free of obvious cracks and holes and high in density and thermal diffusion coefficient, and a light intelligent thermal management material can be provided for the field of electronic equipment.

The application relates to the technical field of dust collectors, in particular to a dust collector with a crushing module, which comprises a dust collector main assembly and a rolling brush for gathering sundries, one end of the bottom of the dust collector main assembly is provided with a suction head assembly, an expansion assembly is movably connected in the suction head assembly, a crushing roller for crushing sundries is sleeved outside the expansion assembly, the expansion assembly comprises a friction block for pressing against the inner wall of the crushing roller, the suction head assembly comprises a buckle cover capable of dismounting the crushing roller from the side face, the dust collector with the crushing module is moved radially outward under the action of centrifugal force generated by the friction block when the connecting plate rotates, until the outer arc surface of the friction block presses against the inner wall of the crushing roller, the crushing roller is driven to rotate synchronously through friction, the cutting edges of the blades arranged on the surface of the crushing roller and the mechanical stoppers are staggered in the radial direction and the axial direction, when the crushing mode is switched, the larger garbage on the ground is crushed, and the cleaning effect of the dust collector is improved.

The invention relates to the technical field of ore particle screening, and discloses high-recovery-rate micro-fine-particle magnetite ore dressing equipment which comprises a mounting frame, a protective shell is fixedly mounted on the mounting frame, a screening assembly is arranged on the protective shell, and the screening assembly comprises a three-way pipe. In order to enable the high-recovery-rate micro-fine-particle magnetic iron ore preparation equipment to be suitable for efficient separation of high-added-value micro-fine-particle iron ore, the screening assembly is arranged, the screening assembly is matched with a power motor to drive a large belt wheel through a small belt wheel and a transmission belt, an output shaft drives an auger rod to push ore in a three-way pipe, feeding blockage is avoided, and the high-recovery-rate micro-fine-particle magnetic iron ore preparation equipment is suitable for efficient separation of high-added-value micro-fine-particle iron ore. And meanwhile, a centrifugal motor drives a trilateral frame to drive a centrifugal screen drum to rotate at a high speed, fine particles fall into a discharging hopper through screen holes by utilizing centrifugal force, and coarse particles are discharged from a first discharging pipe through a mounting drum. And the stirring paddle rotates synchronously to prevent the fine particles from accumulating in the funnel.

The invention relates to the technical field of injection mold bases, in particular to a multi-cavity efficient injection mold base for automobile electronic products. Comprising a support, an injection molding feeding pipe is fixedly installed on the support, the fixed mold base is rotationally connected to the support, four upper molds are rotationally connected to the fixed mold base, each upper mold is rotationally communicated with the injection molding feeding pipe, a positioning motor in transmission connection with the fixed mold base is arranged on the support, and a lifting frame is arranged on the support in a lifting mode. The lifting frame is rotationally connected with a discharging rotating frame, the discharging rotating frame is rotationally connected with an overturning frame, the overturning frame is rotationally connected with a movable mold base, and the movable mold base is rotationally connected with four lower molds. The circulating type variable-angle reciprocating injection mold has the beneficial effects that the movable mold base and the lower mold are driven by the transmission mechanism to achieve circulating type variable-angle reciprocating rotation, and the limitation of static filling of a traditional fixed mold cavity is broken through by combining the synchronous linkage design of the fixed mold base and the upper mold and utilizing the centrifugal force and the periodic extrusion effect.

The invention discloses an Archimedes spiral anode rotary scanning electroforming device, and belongs to the technical field of electroforming. The Archimedes spiral anode is made of platinum with the width of 50 micrometers and the purity of 99.999%, the Archimedes spiral anode is embedded in the center of a line anode carrying plate, and the polar coordinate equation is that during electroforming, a cathode carrying plate rotates along with a rotating shaft at the rotating speed of 0.1-20 r / s, and uniform coverage of a cathode global electric field is achieved; the device is provided with an adjustable gap of 0.5-4 mm between two electrodes, a liquid supply channel is formed in the center of a wire anode carrying disc, the carrying disc is parallel to a cathode carrying plate, and the distance between the carrying disc and the cathode carrying plate is adjustable. The spiral line anode structure can solve the problem that a traditional radial anode is uneven in electric field; through the flow-rotating speed synergistic effect, the rotating centrifugal force of the cathode can be counteracted, and the interelectrode ion concentration is kept stable; the continuous helical structure can also eliminate non-effective working time. According to the method, the edge effect and the bubble defect are effectively restrained, the deposition uniformity, the electroforming efficiency and the deposition layer performance are improved, and the method is suitable for high-precision electroforming manufacturing of the chip type disc-shaped cathode substrate.

The invention relates to the field of agricultural machinery, in particular to multifunctional tea garden weeding, soil loosening and fertilizing integrated mechanical equipment which comprises a mounting frame, a driving module is mounted at the bottom of the mounting frame, a weeding module, a soil loosening module and a fertilizing module are mounted at the top of the mounting frame, and the weeding module comprises a power part which is fixedly connected with the top of the mounting frame; an output shaft of the power part is connected with a roller, the outer side wall of the roller is fixedly connected with a plurality of wave-shaped blades, the soil loosening module is installed in the roller, and an opening is formed in the side wall of the roller and used for loosening tea garden soil based on the centrifugal force effect; the driving module is in signal connection with a controller, the controller is in signal connection with the power piece and the fertilization module, and the controller is used for adjusting the power of the driving module and the rotating speed and the output power of the power piece according to preset terrain information. The method is used for improving the efficiency of weeding, soil loosening and fertilizing operation of the tea garden and enhancing the collaboration of all operation links.

The invention belongs to the technical field of electric spindles, and particularly relates to an electric spindle and a machine tool. Wherein the machine body assembly is provided with an oil inlet channel and an oil return channel; the shaft core is supported on the machine body assembly through the bearing assembly. One end of the oil injection structure is communicated with the oil inlet channel, and the other end of the oil injection structure is communicated with an inner raceway of the first bearing or the second bearing. A spacer bush arranged on the shaft core in a sleeving mode is arranged between the first bearing and the second bearing, the spacer bush is provided with a flow guide channel and a backflow channel communicated with the oil return channel, and the flow guide channel is provided with an oil throwing inclined face so that waste oil in the first bearing and the second bearing can be guided to the backflow channel. According to the motorized spindle and the machine tool, the flow guide channel is arranged on the spacer bush, the oil slinging slope on the flow guide channel can form forced backflow through centrifugal force, oil return automation is achieved, and old oil and redundant oil are prevented from affecting bearing lubrication and cooling.

The application relates to the technical field of metal casting, and discloses a directional solidification casting equipment for low-internal-stress aluminum alloy complex structures, which comprises a heat preservation furnace, a rotary casting assembly, an infiltration temperature control assembly and a forming die. The casting equipment is provided with the rotary casting assembly and the forming die on a rotary table, the rotary table rotates at different rotating speeds to provide controllable centrifugal force, metal liquid is infiltrated and cast on the forming die in the anti-gravity mode under the action of the centrifugal force, the infiltration speed and pressure can be adjusted by changing the centrifugal force, the limitation of workpiece size in negative pressure casting is broken, and the anti-gravity casting of complex structure workpieces is facilitated, the equipment can simultaneously synchronously cast multiple molds, each process parameter is convenient to uniformly control, the quality consistency is ensured, the problem that continuous carbon fiber reinforced aluminum matrix composite materials are difficult to mass produce is solved, and the production efficiency is improved.

The invention discloses an oil reservoir exploitation multiphase flow separation device with cyclone pre-separation, which comprises a cyclone separator body, a cyclone separation assembly, a purification and deposition prevention assembly and a gas export and purification assembly, and is characterized in that the cyclone separation assembly is mounted in the cyclone separator body; according to the device, primary screening and flow equalizing are carried out on high-sand-content multi-phase fluid through a honeycomb damping grid at the front end of a micro rotational flow channel by utilizing a regular pore channel structure of the honeycomb damping grid, large-particle solid impurities are effectively intercepted, and the high-sand-content multi-phase fluid is purified; after the fluid passes through the honeycomb damping grid, the fluid enters the conical opening of the micro rotational flow channel, the flow speed is increased under the acceleration action of the contraction section, a high-strength rotational flow field is generated along a flow guide path formed by the micro spiral grooves, and the fluid is prevented from directly entering the micro rotational flow channel to cause local blockage or abrasion; and primary separation of oil, gas, water and solid impurities is realized under the action of centrifugal force.

The invention relates to the technical field of packing scale equipment, and provides a special packing scale for powdery sodium cyanide and a control method thereof.The special packing scale comprises a feeding hopper and a vibration table which are distributed up and down, a connecting flange coaxially fixed to a discharging opening of the feeding hopper, and a receiving hopper which is coaxially connected to the connecting flange in a sleeving mode, and the outer wall of the receiving hopper is annularly provided with a driving gear and is driven by a motor on the feeding hopper; at least one concave cavity is formed in the side wall of the receiving hopper, a rod body is hinged in the concave cavity, a replaceable balancing weight is arranged at the free end of the rod body, when the receiving hopper rotates, the rod body is unfolded under the action of centrifugal force and knocks a ton bag sling, meanwhile, the vibration table acts on the bottom of a ton bag, and the vibration table and the receiving hopper cooperatively excite the standing wave effect of the ton bag. The rod body periodically knocks the sling under the action of centrifugal force, and the frequency can be adjusted through the balancing weight. When the knocking frequency is close to the inherent frequency of the ton bag, vibration of the hanging belt can be transmitted to the whole bag body, the resonance phenomenon is caused, the vibration table at the bottom is matched to excite the standing wave effect, and loosening and even distribution of materials are achieved.

The application belongs to the technical field of drying equipment, and particularly relates to a double-cone vacuum drying machine and a silver nitrate drying method. The double-cone vacuum drying machine comprises a stock bin, a gas path mechanism, a heat source mechanism, a first power mechanism, a blowing adjustment mechanism and a second power mechanism. The second power mechanism drives the arc-shaped plate in the blowing adjustment mechanism to reciprocatingly rotate relative to the transfer bin, so as to adjust the direction and flow rate of the hot nitrogen gas blown out of the upper opening of the transfer bin. When the arc-shaped plate rotates clockwise, the wet silver nitrate material that is flipped upward under the action of centrifugal force is blown away. The second power mechanism cooperates with the blowing adjustment mechanism to reciprocatingly adjust the blowing direction and blowing flow rate of the hot nitrogen gas, which can not only ensure that the dry layer on the surface of the wet silver nitrate material is broken, but also avoid the problem that the wet silver nitrate material splashes after the dry layer on the surface of the wet silver nitrate material is broken. That is, the problem that the heat and mass transfer path inside the wet silver nitrate material is lengthened after the dry layer is formed on the surface of the wet silver nitrate material, which affects the drying efficiency and drying time, is overcome.

The invention discloses a centripetal force sensor and a using method thereof, and belongs to the field of sensors. According to the technical scheme, the centripetal force sensor comprises a fixed part and a rotating part, the rotating part comprises a sensor shell, the sensor shell is hollow, a center signal column is fixedly installed in an inner cavity of the sensor shell, a plurality of notches are formed in the outer circumferential face of the center signal column, and mass blocks are placed in the notches; piezoelectric ceramics are arranged on the outer side of the mass block, and the piezoelectric ceramics and the mass block are clamped between the inner wall of the sensor shell and the outer wall of the center signal column. The sensor is directly installed at the rotation center of a detected object, additional centrifugal force generated by the mass of the sensor approaches to zero, the authenticity of the detection result is greatly improved, meanwhile, the sensor is in direct conductive contact with the signal output structure through the center signal column, the mouthpiece does not rotate along with the detected object, and the detection accuracy is improved. The winding and pulling faults of the mouthpiece and an external pipeline are completely eradicated, and the durability of the sensor is improved.

The invention provides a wind turbine blade icing experiment device and a centrifugal deicing control method, belongs to the technical field of wind turbine generator operation and maintenance, and can at least partially solve the problems that an existing icing experiment device lacks multi-parameter cooperative monitoring and data real-time processing capacity, so that the accuracy and repeatability of an experiment result are insufficient, and the experiment efficiency is low. The control method does not fully consider the blade structure, the ice layer distribution and the coating characteristics, and lacks a real-time data feedback and safety constraint mechanism. And in the process of increasing the rotating speed, strain verification or state grading judgment is not carried out, so that overspeed running of blades, structural damage and even safety risks are easily caused. The system comprises a test bench, a wind turbine generator and a dynamic monitoring system. According to the control method, parameters such as the blade rotating speed, the ice layer thickness and the adhesion strength are measured in real time, the centrifugal force and the adhesion force are calculated, the safety factor and the strain threshold value are introduced for double judgment, and therefore whether the rotating speed is increased or not is determined to achieve deicing.

The invention relates to the technical field of separation equipment, and discloses a waste mineral oil impurity removal, separation and recovery system which comprises a rotary drum component, the rotary drum component is composed of a rotary drum large end and a rotary drum small end which are fixedly connected, and an auxiliary deslagging structure is arranged outside a spiral main shaft located at the rotary drum small end. The auxiliary deslagging structure comprises a sleeve arranged on the outer surface of a circular shaft of the spiral main shaft in a sleeving mode, and a sliding groove in sliding connection with the outer wall of the spiral main shaft is formed in the sleeve. An auxiliary deslagging structure is arranged, oil residue particles do spiral motion along the inner wall of the rotary drum component under the combined action of centrifugal force and spiral thrust, meanwhile, radial pulsation is generated due to reciprocating motion of auxiliary blades, a combined track of spiral advancing and radial oscillation is formed, an oil film structure is damaged through dynamic extrusion, leaked oil is recovered through centrifugal suction, and the oil residue removal effect is improved. And through the synergistic effect of variable-volume extrusion and filtering gaps, oil wrapping is reduced, the oil stripping effect is enhanced, oil residue residues are reduced, and channel blockage is avoided.