462results about How to "Extended maintenance cycle" patented technology

A foldable pushing chain type lifting platform belongs to the technical field of pushing chains and lifting platforms and comprises a meshed pushing chain system, an X-axis limiting mechanism and a Y-axis limiting mechanism, one side of the bottom of the meshed pushing chain system is fixedly connected with a base, the meshed pushing chain system outputs pushing chains upwards in the Z-axis direction, and the X-axis limiting mechanism and the Y-axis limiting mechanism are fixedly connected with the base. The top end of the pushing chain is fixedly connected with a top table used for bearing a lifted object, an X-axis limiting mechanism is further connected between the top table and the base, and the side, away from the meshing type pushing chain system, of the X-axis limiting mechanism is connected with a Y-axis limiting mechanism. The X-axis limiting mechanism is of a folding arm structure which only rotates around the X axis and limits the pushing chain and the top table to move in the X-axis direction. According to the invention, the pushing chain is used as a driving part, and the device has the advantages of high speed, large bearing capacity, high precision, long maintenance period, multi-point control, good stability, low initial height, large stroke, small occupied space and strong environmental adaptability.

The invention discloses an electric reactor with internal coil stabilization and auxiliary heat dissipation, and relates to the technical field of coil stabilization, the electric reactor comprises a base, the top surface of the base is fixedly connected with an air-core electric reactor body, the outer surface of the air-core electric reactor body is provided with a coil body, and the top surface of the base is provided with a coil stabilization mechanism for preventing the coil from loosening. An auxiliary heat dissipation mechanism used for assisting heat dissipation of the reactor is arranged on the top face of the base, the coil stabilizing mechanism can clamp a loose coil, pressure can be applied more evenly through clamping and fixing, the coil is more stably fixed, the consistency of the shape and performance of the coil can be kept, and the service life of the reactor is prolonged. The clamping device can avoid direct compression and damage to an insulating layer of the coil, the insulating performance of the coil can be protected, the auxiliary heat dissipation mechanism can scrub the interior of the electric reactor, remove dust and sundries in the electric reactor, reduce heat resistance, improve heat dissipation efficiency and keep the electric reactor to operate within the normal working temperature range.

The invention relates to the technical field of medical instruments, and discloses an intelligent multi-mode medical oxygen flow monitoring system, device and method. The system comprises a sensor module, a coupling modeling unit, a prediction unit, a control unit and an output module. Oxygen flow, temperature, humidity and pressure data are collected in real time through the sensor module, a dynamic coupling model of a flow field, a thermal field and a pressure field is established through the coupling modeling unit, and the prediction unit dynamically predicts the oxygen flow based on a time sequence and a state space model. The control unit optimizes sensor sampling and signal processing parameters through a feedback control algorithm, and the output module displays the oxygen flow and triggers abnormal alarm. According to the invention, high-precision monitoring, dynamic prediction and optimal control of the oxygen flow are realized, the problems of low monitoring precision, weak data analysis capability and poor interactivity in the prior art are solved, and the safety, real-time performance and intelligent level of oxygen supply are remarkably improved.

The invention belongs to the technical field of photovoltaic wet etching, and particularly relates to a low-concentration hydrofluoric acid composite etching solution and a preparation method and an etching process thereof, and the low-concentration hydrofluoric acid composite etching solution comprises the following components in percentage by mass: 5%-10% of hydrofluoric acid, 2%-5% of an etching additive and the balance of water; wherein the etching additive comprises the following components in percentage by mass: 8%-25% of a strong oxidant, 2%-5% of an etching accelerant, 0.5%-2% of an interface modification and mass transfer accelerant, 0.1%-3% of a product control and stabilizer, 0.1%-2% of an equipment compatible corrosion inhibitor and the balance of water; the strong oxidant is used for oxidizing silicon nitride to form a silicon oxynitride transition layer, the etching accelerant is used for providing HF molecules and HF2-ions, and the product control and stabilizing agent is used for complexing SiF62-ions generated by etching.

The utility model provides a winch connector, and belongs to the technical field of winches. The technical problem that an existing winch connector is difficult to maintain is solved. The winch connector comprises a rotating shaft and a sleeve which is coaxially arranged, the rotating shaft is axially fixed in the sleeve, a plurality of bird blocking pieces which are arranged in the circumferential direction of the sleeve are arranged between the periphery of the rotating shaft and the sleeve, and the periphery of the rotating shaft is sleeved with two clamping springs and two annular anti-attrition pads. The two clamping springs and the two anti-attrition pads are arranged at intervals in the axial direction of the rotating shaft, two positioning grooves formed in the circumferential direction are formed in the inner edge of the sleeve, the clamping springs are located and embedded in the positioning grooves respectively, the two anti-attrition pads are located between the two clamping springs, and the bird blocking pieces are arranged between the two anti-attrition pads in a limited mode. The winch joint is more convenient to maintain.

The invention discloses a semiconductor butterfly valve and thin film deposition equipment thereof, the semiconductor butterfly valve comprises a valve body and a valve plate, the valve body is provided with an assembly hole, and the valve plate is rotatably connected in the assembly hole; a plurality of grooves are further formed in the upper plate face and / or the lower plate face of the valve plate. According to the semiconductor butterfly valve and the thin film deposition equipment thereof, the groove or the groove is additionally formed in the valve plate and / or the valve body, and residual powder falling onto the butterfly valve is guided through the groove and the groove, so that the valve plate is prevented from being blocked by the residual powder, the maintenance period of the equipment is prolonged, the maintenance cost is reduced, and the process efficiency is improved.

The centrifugal fan comprises a fan shell, an air inlet, an air guide wheel and an air outlet, the air inlet is formed in the bottom of the fan shell, the air guide wheel is rotationally connected to the upper portion of the air inlet and driven by a motor on the inner wall of the fan shell, the air outlet is formed in the outer wall of the fan shell, and the air outlet is rotationally connected to the upper portion of the air inlet. An energy-saving assembly used for assisting in air inlet is arranged below the air inlet, a separation assembly used for separating diffuse particles and impurities is arranged in the fan shell, the purpose of collecting the particles and the impurities is achieved through the arrangement of the separation assembly, and compared with a traditional centrifugal fan which depends on a simple filter screen or gravity sedimentation and other modes, the energy-saving effect is better. Compared with the prior art, the device has a better separation effect on small particles and impurities with different densities, improves the purity of exhausted gas, achieves the purpose of collecting the particles and the impurities, and avoids the problems of increase of airflow resistance, fluctuation of air volume and air pressure and the like caused by impurity accumulation.

The present invention discloses a sealing device of a rotary kiln and a rotary kiln, the sealing device comprises a moving ring and a stationary ring arranged between a cylinder and a kiln cover, the two are in contact with each other and rotate relatively to form a spherical-conical end face sealing pair, the moving ring is fixed on the cylinder on the side away from the stationary ring, the stationary ring is elastically and sealedly connected to the kiln cover through a compensator, and the stationary ring is connected to an axial force component on the circular ring end face close to the kiln cover. The rotary kiln comprises the above-mentioned sealing device. The sealing device of the present invention, under the joint action of the moving ring, the stationary ring, the compensator, the rotating pair, the sliding pair and the axial force component, can realize the continuous and effective sealing of the cylinder and the kiln cover of the rotary kiln, has the advantages of simple structure, convenient use, good adaptability, high reliability, good sealing effect, long service life, etc., can be widely used in equipment such as rotary kilns, and has important promoting significance for effectively improving the sealing effect of rotary kilns and promoting the widespread use of rotary kilns.

The invention relates to the technical field of electrical equipment, and discloses an automatic electrical cabinet which comprises a cabinet body and a base installed at the bottom end of the cabinet body, the cabinet body is cubic, refrigerators are arranged on the two sides of the cabinet body in the X direction, heat dissipation assemblies are arranged on the outer side faces of the refrigerators, the automatic electrical cabinet further comprises a cabinet door, the cabinet door is hinged to the cabinet body, and control keys are arranged on the upper portion of the outer side of the cabinet door. The electric appliance cabinet further comprises an air inlet grille, the air inlet grille is arranged at the front end of the cabinet body and is close to the base, a cold source is provided for internal cooling of the electric appliance cabinet through the radiation refrigeration module of the refrigerator, and therefore energy consumption is reduced.

The invention provides a dust concentration monitoring device and method, the monitoring device comprises a monitoring device, the monitoring device is used for monitoring dust, and the monitoring device is provided with a containing cavity for monitoring dust concentration and a communicating pipeline communicating with the containing cavity for dust flowing; the ventilation gas circuit is arranged on the side, away from the communicating pipeline, of the monitoring equipment and communicates with the containing cavity so as to convey dust into the containing cavity; the cleaning component is used for communicating with the communicating pipeline, so that when the concentration of dust in the containing cavity is larger than or equal to a set threshold value, the cleaning component is controlled to convey airflow into the monitoring equipment, and the airflow flows out from the ventilation air path to clean the containing cavity; the problem that in the prior art, a detection light path of dust concentration detection equipment using a light scattering method is prone to being polluted by dust, and consequently the measurement result is inaccurate is solved.

The invention discloses an intelligent monitoring system for predicting the service life of a high-power LED lamp bead, and relates to the technical field of intelligent monitoring, and the system comprises a data collection module for collecting the real-time current density distribution data of the high-power LED lamp bead in a working state, and a calculation module for calculating the real-time current density distribution data of the high-power LED lamp bead in a working state. The calculation module is used for calculating the hot spot position and the hot spot temperature of the lamp bead based on the current density distribution data, the analysis module is used for analyzing the influence degree of the hot spot position and the hot spot temperature on the brightness attenuation of the lamp bead, and the driving regulation and control module is used for adjusting the driving current of the lamp bead according to the influence degree, optimizing the brightness and prolonging the service life of the lamp bead; according to the intelligent monitoring system for predicting the service life of the high-power LED lamp bead, the problem of brightness attenuation caused by inconsistent current density in a long-time high-power working state in the prior art is solved.

The invention relates to the technical field of charging equipment, in particular to a liquid cooling heat dissipation device and heat dissipation system for a high-power charging pile, the liquid cooling heat dissipation device comprises a charging module and a cooling module, a plurality of liquid cooling plates are arranged in the charging module, the liquid cooling plates are tightly attached to heating elements, and the input ends of the liquid cooling plates are connected with a first circulating pump; the cooling module comprises a cooling tank, a first fan, a filtering mechanism, a liquid storage tank and a second circulating pump, and the first fan is mounted above the cooling tank and used for cooling the cooling liquid; the output end of the liquid cooling plate is connected with the input end of the second circulating pump, the output end of the second circulating pump is connected with the input end of the cooling tank, the output end of the cooling tank is connected with the input end of the filtering mechanism, the output end of the filtering mechanism is connected with the input end of the liquid storage tank, and the output end of the liquid storage tank is connected with the first circulating pump. And the cooling module is used for enabling the cooled cooling liquid to flow back to a liquid cooling plate in the charging module.

The invention relates to the technical field of heat exchange equipment, and discloses an environment-friendly self-cleaning plate heat exchanger which comprises fixed clamping plates, guide rods are installed at the upper ends and the lower ends of the interiors of the two fixed clamping plates correspondingly, a plurality of plate sheets are clamped on the inner sides of the guide rods, and the plate sheets and the fixed clamping plates are attached to each other; a cold outlet and a hot outlet are formed in one side of the outer wall of the fixed clamping plate, a cold inlet and a hot inlet are formed in the other side of the outer wall of the fixed clamping plate, and a self-cleaning mechanism is installed in the sheet bar and used for automatically cleaning an inner channel of the sheet bar. A bubble cleaning mechanism is mounted on one side of the outer wall of the fixed clamping plate and used for introducing carbon dioxide bubbles into the plate to complete cleaning. And tiny bubbles are released through the bubble cleaning mechanism, dirt on the inner wall of the plate is deeply cleaned through the adhesive force of the bubbles and the high-pressure impact force generated when the bubbles are broken, and the continuity and stability of production operation are improved.

The utility model discloses a sealing flushing ring device and a flushing system, and relates to the technical field of instrument cleaning, the sealing flushing ring device comprises a sealing flushing ring, a flushing water connector assembly and a flow control assembly, and two symmetrical flushing holes are formed in the cylindrical wall of a circular ring of the sealing flushing ring in the radial direction; the flushing water connector assembly comprises two drainage short pipes, one end of each drainage short pipe is connected with the sealing flushing ring through the corresponding flushing hole, the end, away from the sealing flushing ring, of each drainage short pipe is provided with a sealing flushing water inlet, and a 45-degree included angle is formed between each drainage short pipe and the side wall of the sealing flushing ring in the horizontal direction. An inclined angle of 10 degrees is formed between the drainage short tube and the side wall of the sealing flushing ring in the vertical direction; and the constant flow valves are arranged on the corresponding drainage short pipes. According to the pressure transmitter, dirty media can be prevented from being accumulated at the pressure transmitter, the service life of the diaphragm component of the pressure transmitter is prolonged, the overhaul period of the pressure transmitter is prolonged, and the measurement precision and accuracy of the pressure transmitter are improved.

The invention relates to the technical field of copper pipe heat dissipation, in particular to a micro-channel heat dissipation device based on a copper pipe structure, which comprises a heat dissipation substrate, a copper pipe type heat dissipation channel and a liquid cooling circulation system, the copper pipe type heat dissipation channel is composed of a plurality of plastic copper pipes and replaces a traditional micro-channel or vapor chamber structure. The copper pipe is embedded or fixed in the heat dissipation substrate or on the surface of the heat dissipation substrate, cooling liquid circulates in the copper pipe, and efficient heat dissipation is achieved through the combined action of forced convection heat exchange and heat transfer; the copper pipe has good plasticity and can be subjected to three-dimensional bending forming according to heat source distribution and spatial layout, through the synergistic effect of forced convection and phase change heat transfer, the heat transfer efficiency is improved, particularly, extremely high local heat flow density can be coped, the chip is effectively prevented from being overheated, and the heat transfer efficiency is improved. The heat dissipation channel can be bent and formed in a three-dimensional space according to heat source distribution, accurate matching with the heat source form is achieved, limitation of traditional plane heat dissipation is broken through, and optimal configuration of heat dissipation capacity and heat flux density is achieved.

A packing seal pressure reduction structure for conveying high-pressure media comprises a shaft sleeve, a packing box is installed on the outer side of the shaft sleeve, packing, a packing ring and a packing gland are installed between the low-pressure side of the packing box and the shaft sleeve, the packing gland compresses the packing and the packing ring, and a labyrinth seal groove and a liquid accumulation groove are sequentially machined in the high-pressure side of the packing box. A pressure relief channel is machined in the stuffing box and communicated with the liquid accumulation groove, and a pressure relief water pipe is installed above the pressure relief channel. According to the utility model, the medium pressure at the packing sealing medium end is effectively reduced, and the sealing medium is converted from a high-pressure medium to a low-pressure medium; the packing pressing force is reduced, the abrasion of the packing and the shaft sleeve is slowed down, the service life of the packing and the shaft sleeve is prolonged, and the maintenance period is prolonged; the unit friction efficiency is improved; the utility model provides a solution for changing mechanical sealing of high-pressure medium sealing into packing sealing.

The invention discloses a high-temperature steam cooking utensil which is internally provided with a cooking cavity and a water tank, the water tank is internally provided with a water insulation cover and a first heating piece, and the water insulation cover divides the water tank into an evaporation cavity located outside the water insulation cover and an overheating cavity located in the water insulation cover; the first heating piece is used for heating the evaporation cavity to generate steam, a second heating piece and a heat conduction cover are arranged in the overheating cavity, and the second heating piece is arranged in the heat conduction cover in a protruding mode and used for heating the steam and the heat conduction cover. The heat conduction cover is arranged between the waterproof cover and the second heating piece so as to divide the overheating cavity into an air inlet channel and an air outlet channel. By arranging the heat conduction cover located between the waterproof cover and the second heating piece, the heat exchange area in unit volume is increased, the effect that steam is heated for multiple times is achieved, the steam can have the higher temperature in a path with the same length, and the generation efficiency of superheated steam is greatly improved.

The invention provides a braking force detection system and method for a dynamic brake and a computer program product. The system is used for the railway vehicle and comprises a brake pressure sensor module, a data acquisition module, a data processing module, a braking force calculation module, a braking force evaluation module, a control module, a display module and a communication module, and a brake pressure sensor is used for monitoring pressure data of a braking part on the railway vehicle in real time; the data acquisition module is used for receiving monitored pressure data; the data processing module is used for processing the received pressure data; the braking force calculation module is used for calculating the braking force according to the processed pressure data; the braking force evaluation module is used for evaluating whether the magnitude of the braking force meets a preset standard or not; the control module is used for adjusting pressure of the brake according to the evaluation result; the display module is used for displaying the real-time data and the evaluation result of the braking force to an operator; and the communication module is used for realizing data exchange between the system and a railway vehicle control center.

The invention relates to the technical field of semiconductor material processing, in particular to a wafer transfer device, a wafer transfer method and a wafer bonding method. The wafer transfer device comprises a transfer disc which is provided with a first surface and a second surface, the first surface is provided with a wafer bearing area and a transition area, the wafer bearing area is internally provided with a plurality of uniformly distributed negative pressure holes, and the first surface is communicated with the second surface through the negative pressure holes; the guide hole intersects with the edge of the wafer bearing area and enables the first surface and the second surface of the transfer disc to be communicated; the negative pressure disc is used for supporting the transfer disc from the second surface of the transfer disc and can form negative pressure; and the lifting platform can support the wafer to reciprocate along the first direction. The wafer transfer device and the wafer transfer method provided by the invention are used for stably transferring wafers in different technological processes, especially in a damaged technological process, and can reduce the formation of pollutants and reduce the pollutant cleaning cost.

The present invention provides a screw press, comprising: a frame; a feed hopper; a pressing screw connected to the feed hopper for pushing materials; a driving motor connected to the pressing screw for driving the pressing screw to move; a screen located between the pressing screw and the frame; a back pressure device connected to the slag discharge end of the pressing screw for squeezing the materials pushed by the pressing screw to obtain solid slag and slurry; a discharge port arranged at the slag discharge end of the pressing screw for discharging solid slag; a slurry mixing and sand removal hopper arranged below the screen for accommodating slurry filtered by the screen; a sand lifting screw connected to the slurry mixing and sand removal hopper for discharging heavy materials in the slurry through the sand discharge port at the end of the sand lifting screw; and a slurry outlet for discharging the slurry after sand removal. According to the present invention, the solid-liquid separation of materials is better achieved, the resource recovery rate is improved, and at the same time, the operating pressure and load of subsequent processing equipment are reduced, and the service life and maintenance cycle of the equipment are extended.

This invention discloses a pretreatment method for detecting trace perfluorinated and polyfluoroalkyl substances (PFAS) in complex matrix textiles, belonging to the field of materials analysis technology. The method involves placing the textile in an alkaline solvent containing an alkyl sulfonate displacing agent. Under heating conditions, the displacing agent utilizes its competitive adsorption mechanism to forcibly occupy matrix adsorption sites and displace the target analytes into the solvent. Subsequently, the temperature is rapidly lowered to the phase separation induction temperature, inducing supersaturation precipitation of the displacing agent, which then encapsulates impurities in situ and co-precipitates, forming a solid-liquid stratified system. Finally, the supernatant is collected for analysis. This invention utilizes the dual properties of the displacing agent—high-temperature solubilization and low-temperature phase change removal—to effectively break the strong adsorption equilibrium of aged textiles without using a solid-phase extraction column. This solves the contradiction between low extraction rate and significant matrix interference, significantly improving the recovery rate of PFAS. It offers advantages such as low cost, simple operation, and high accuracy.

The adjustable knife holding device comprises a base, a horizontal transverse sliding table, an angle adjusting table and a horizontal longitudinal sliding table which are sequentially arranged from bottom to top, the base is connected with the horizontal transverse sliding table in a sliding mode, and an arc concave face is arranged at the top of the horizontal transverse sliding table. An arc convex surface is arranged at the bottom of the angle adjusting table, the arc concave surface is in sliding connection with the arc convex surface, and the horizontal longitudinal sliding table is in sliding connection with the angle adjusting table; a plurality of oil holes are formed in the angle adjusting table in a penetrating mode, the upper ends and the lower ends of the oil holes communicate with the top sliding contact face and the bottom sliding contact face correspondingly, an oil storage cavity is formed in the angle adjusting table and communicates with the oil holes, and siphon pieces are embedded in the oil holes. And the siphon piece is used for conveying lubricating oil in the oil storage cavity to the top sliding contact surface and the bottom sliding contact surface.

The present invention relates to the field of building construction technology, and in particular to a wear-resistant and non-slip integral suspended assembled shock-absorbing sports floor construction method. The following construction steps are included: (1) construction preparation (2) base floor treatment (3) line drawing, grid division, positioning, and fine leveling (4) elastic rubber pad placement (5) wooden keel placement (6) plywood laying (7) panel installation (8) skirting board installation (9) panel cleaning and protection. The present invention enables the sports wooden floor to have better load-bearing performance, high shock absorption performance, and anti-deformation performance, improves the overall sports performance of the sports floor, and at the same time enables the sports floor to develop in a more professional, environmentally friendly, and safer direction, that is, it is economical, practical, and beautiful, and has good application and promotion prospects.

The utility model relates to the technical field of packaging bag production and processing, in particular to a packaging film roll conveying roller installing and lubricating fixing piece. According to the technical scheme, a conical main body matching combination column with the center axis in the left-right direction is included, an integrally-formed cylindrical installation fastening connecting plate is arranged on the left side of the main body matching combination column, and a conical lubricating matching connecting groove is formed in the center of the left side end face of the installation fastening connecting plate; cylindrical integral fastening connecting holes which are uniformly distributed in the circumference are formed in the left side of the mounting fastening connecting plate, fastening avoiding safety grooves are formed in the right sides of the integral fastening connecting holes, and main body lubricating matching grooves are formed in the inner sides of the lubricating matching connecting grooves. The fixing piece has the advantages that when the fixing piece is used, lubricating liquid can be injected into the fixing piece, the rotating movable position can be comprehensively and evenly lubricated through mutual matching of the lubricating grooves, the movement smoothness of the conveying roller is better when the conveying roller is used, and the abrasion resistance of the conveying roller is more reliable.

The present invention relates to a double-helix low-resistance high-efficiency heat transfer arc extinguishing device, comprising an upper electrode, a lower electrode and an arc extinguishing chamber, wherein one end of the upper electrode forms an upper electrode contact, and the other side is fixedly connected to the upper part of the insulator string ball head, and one end of the lower electrode forms a lower electrode contact, and the other side is fixedly connected to the connection between the conductor of the ultra-high voltage transmission line and the insulator string; the arc extinguishing chamber comprises an arc extinguishing chamber body made of epoxy resin, two spiral arc extinguishing channels are arranged in the arc extinguishing chamber body, and the two ends of the two spiral arc extinguishing channels have a common starting point and a convergence point, the upper electrode contact is fixedly located at the starting point of the two spiral arc extinguishing channels, and the convergence point of the two spiral arc extinguishing channels is fixedly provided with a graphite arc-starting electrode ball, and the graphite arc-starting electrode ball is partially exposed to the arc extinguishing chamber body; the distance between the upper electrode contact and the lower electrode contact is 80-90% of the height of the insulator string. The present invention can reduce operation and maintenance costs and greatly accelerate the extinguishing of the latent power arc after lightning impulse flashover.

This utility model relates to the field of electric motor technology, specifically disclosing a rack guide structure, including a guide sleeve with a guide channel. The cross-sectional shape of the guide channel is non-circular or non-arc, and the guide wall of the guide channel includes at least one planar segment. The guide channel is used to cooperate with an anti-rotation part on the rack. The cross-sectional shape of the anti-rotation part is adapted to the shape of the guide channel, allowing the rack to reciprocate along the guide channel. A pump electric motor includes a motor body, a gear, and a rack. The motor body drives the gear to rotate, and the rack meshes with the gear, serving as the reciprocating drive source for the pump body. It also includes the aforementioned rack guide structure. The guide sleeve in the rack guide structure is fixedly installed on the housing of the motor body, and the anti-rotation part of the rack cooperates with the guide channel of the guide sleeve. This solution addresses the problem of easy wear caused by rack deflection or tilting in current rack-output motors.

This utility model relates to the field of lifting equipment technology, specifically disclosing a lifting device with a chain transmission mechanism. The inner walls of the frame are vertically provided with guide rail grooves. Upper and lower rotating shafts are rotatably installed between the top and bottom walls of the frame, with upper and lower sprockets fixedly fitted near their respective ends. The lifting platform includes a lifting frame, guide wheels rotatably installed on the top and bottom of the two side walls of the lifting frame and rolling along the guide rail grooves, adjusting pulleys slidably engaged with the top and bottom ends of the two side walls of the lifting frame in a horizontal direction, and tensioning screws for adjusting the horizontal position of the adjusting pulleys. The outer end of the adjusting pulleys is provided with rollers that roll vertically along the inner wall of the guide rail groove. Chains are connected between the top and bottom ends of the two side walls of the lifting frame, with the top and bottom of the chains passing over the upper and lower sprockets respectively. A power component for driving the upper rotating shaft is provided at the top of the frame. This design effectively solves the problems of unstable movement and inconvenient leveling of the lifting platform in lifting equipment.

The utility model discloses a kind of polysilicon hydrogenation device silicon powder high-efficiency recovery system, including fluidized bed reactor, further including inner cyclone separator, double cyclone separator, metal filter and silicon powder collecting tank;Multiple inner cyclone separators are fixedly arranged in the top inside fluidized bed reactor by fixed support;The air outlet of multiple inner cyclone separators is communicated with the air inlet of gas collector, and the air outlet of gas collector is communicated with the reaction gas outlet in the top of fluidized bed reactor;The reaction gas outlet of fluidized bed reactor is communicated with the air inlet of double cyclone separator by pipeline, and the air outlet of double cyclone separator is communicated with the air inlet of metal filter by pipeline.The advantage is that: by three-stage gradient separation, silicon powder recovery efficiency is greatly improved;Silicon powder separated by double cyclone separator can be returned to fluidized bed reactor dense phase region through return chute pipe, realize raw material recycling, reduce silicon powder waste.

This invention discloses a high-temperature molten slag granulation system coupled with cyclone heat exchange and water mist, including a granulation chamber, a high-temperature molten slag transition device disposed at the top of the granulation chamber, a granulation disc disposed inside the granulation chamber and below the high-temperature molten slag transition device, and a transmission shaft and motor for driving the rotation of the granulation disc. A slag outlet is provided at the bottom of the granulation chamber, and multiple spray nozzles are evenly arranged circumferentially on the upper part of the inner side wall of the granulation chamber. At least four tangential high-pressure air inlets are provided circumferentially below the spray nozzles on the side wall of the granulation chamber, each high-pressure air inlet being connected to a high-pressure blower. An arc-shaped guide baffle is provided on the inner side of each high-pressure air inlet. The system of this invention has a compact structure and no additional moving parts. It can adapt to different working conditions such as blast furnace slag and steel slag by only adjusting the air pressure and water volume, and has broad industrial application value.