2016 results about "Centrifuge" patented technology

The invention relates to the technical field of fault prediction, in particular to a centrifuge fault prediction system based on machine learning, which comprises a data channel synchronization module, a multi-dimensional feature extraction module, a state evolution index construction module, a trend aggregation trajectory recognition module and a fault section recognition module. According to the method, different types of data are synchronously aligned by a multi-channel signal segmentation processing mechanism based on a periodic state, a state evolution sequence is constructed in combination with a unified sampling structure based on a time scale, a state characteristic track is established through a multi-dimensional parameter set, a trend change index is constructed by means of a difference root-mean-square between adjacent states, and the state evolution sequence is analyzed. According to the method, the aggregation section is recognized and the trajectory deviation frequency is counted by utilizing continuous trend mutation, so that dynamic migration of the trajectory boundary and intelligent recognition of the fault section are realized, the boundary failure problem caused by static preset conditions is avoided, and the continuous prediction stability of long-period equipment and the application range under a non-standard working condition are effectively enhanced.

The invention belongs to the technical field of centrifugal fan fault prediction, and provides a centrifugal fan fault trend prediction method based on multi-source information fusion, and the method comprises the following steps: in the operation process of a centrifugal fan, capturing the change trend of data distribution through multi-source data monitoring and statistical property analysis; and whether data non-stationary change of the centrifugal machine is caused by equipment aging is identified. Based on a time and space two-dimensional comparison analysis framework, physical mechanism verification is combined, suspicious aging features are locked by calculating relative deviation and aging trend index quantitative indexes, and then an average correlation coefficient and trend consistency are utilized to construct a correlation consistency index to verify feature reliability, so that the method has the capability of positioning a specific aging part, and the reliability of the aging part is improved. The problem of misjudgment caused by sensor faults or environmental interference in traditional fault diagnosis is optimized, the accuracy of aged part recognition is improved, and a clear object is provided for targeted maintenance.

The invention relates to the technical field of centrifugal machine PID control, in particular to a centrifugal machine control method and system for soybean protein production. Obtaining time sequence data of the rotating speed and the torque of the centrifugal machine, analyzing data differences and fluctuation trends, calculating abnormal indexes of state parameters at all moments, accurately identifying abnormal data points and abnormal moments, and positioning rotating speed sudden change key nodes; determining an abnormal time period based on the time sequence characteristic of the abnormal moment, analyzing the relation between the rotating speed and the torque, the similarity of abnormal indexes and the rotating speed fluctuation characteristic in the time period, quantifying the dynamic relation between the two, and formulating an adjustment index; aiming at the problem of control lag caused by fixed parameters of the traditional PID, the PID parameters are dynamically adjusted by combining the abnormal index difference of the rotating speed and the torque at the current moment and the adjustment index determined in the early stage, so that the control strategy is adaptively optimized along with the change of the working condition, and finally, the stable, efficient and accurate control on the rotating speed of the centrifugal machine is realized.

The invention discloses an L-shaped wind wave flow-earthquake simulation system and method suitable for a high gravity field, the simulation system comprises a model box, a wind generation system, an L-shaped wave generation system, a flow generation system and a vibration seabed model, and the model box is used for accommodating and installing each system and is arranged on a rotating arm of a centrifugal machine in an up-and-down swinging manner; the wind generation system is used for forming horizontal airflow circulation, the L-shaped wave generation system is used for generating waves, the flow generation system is used for generating flow, and the vibration seabed model is used for researching interaction between a maritime work structure and seabed soil under various sea conditions. The simulation system can reproduce sea wind, wave, ocean current and earthquake scenes in a high gravity field.

Disclosed in the present invention are high-rise pile cap equipment under a horizontal load and a centrifuge test method for foundation bearing characteristics thereof. The equipment comprises a model box, a sand layer, a model pile cap, at least eight model piles, a horizontal loading device, at least two laser displacement sensors, an axial force sensor, and a plurality of strain gauges. The method comprises: S1, performing one-way horizontal loading on high-rise pile cap equipment under a horizontal load to obtain an ultimate foundation bearing capacity situation, a model pile body axial force distribution situation, a pile foundation axial force comparison situation, a model pile body bending moment distribution situation, and a model pile body bending moment comparison situation of the equipment; and S2, performing one-way variable amplitude cyclic loading on the high-rise pile cap equipment under the horizontal load to obtain a foundation displacement situation, an effect of the number of cycles on foundation stiffness, an effect of a cyclic load amplitude on the foundation stiffness, and a foundation inclination situation. In this way, the foundation design of the high-rise pile cap can be optimized, and a basis and a reference for evaluating safety of foundation long-term service are provided.

The invention discloses an anti-blocking peek extruder, and belongs to the technical field of plastic processing, the anti-blocking peek extruder comprises an extrusion cylinder, a main shaft and a driving mechanism, the right side of the extrusion cylinder is provided with an extrusion nozzle, the left side of the extrusion cylinder is provided with a linkage mechanism, and the extrusion cylinder is internally provided with a centrifugal mechanism and an electromagnetic heating mechanism. Through the synergistic effect of the linkage mechanism and the driving mechanism, dynamic sensing and self-adaptive adjustment of resistance in the extrusion process are achieved, the technical problem that a high-viscosity PEEK material is prone to blockage is effectively solved, the driving mechanism transmits power through meshing of a limiting groove and a limiting strip, heating power is automatically triggered to be increased when the resistance is increased, and the heating efficiency is improved. The melt flowability is ensured; the electromagnetic heating mechanism generates eddy current heating through relative movement of a permanent magnet and a coil, and the heating effect during high-speed extrusion is remarkably improved; the homogenizing mechanism monitors the material compaction degree in real time through a pressure sensor, the feeding speed is intelligently adjusted, and hollowing or overpressure blockage is avoided.

The invention discloses a centrifugal system adaptive to bottom extraction, and relates to the technical field of solid-liquid separation, and the centrifugal system adaptive to bottom extraction is characterized by comprising a centrifugal machine main body, a rotating drum is arranged in the centrifugal machine main body, and a bottom extraction device is arranged at the bottom of the rotating drum; the dynamic sealing structure is arranged between the bottom extraction device and the rotary drum and used for keeping the sealing performance in the centrifugal process and preventing material leakage; the modular interface is connected with the bottom extraction device and the material collection container, so that quick replacement and adaptation to components of different specifications are facilitated; and the automatic control system comprises a sensor module, a PLC (Programmable Logic Controller) and a remote monitoring module, and is used for monitoring parameters including the rotating speed, the temperature and the pressure in the centrifugal process in real time and realizing automatic control.

The invention relates to the technical field of data processing, in particular to a centrifugal machine state online monitoring method and system. The method comprises the steps of collecting vibration data, temperature data and coal dehydration granularity data, obtaining the abrupt change degree of the vibration data of each vibration sensor at a feeding port and a discharging port of a screen basket at each moment, obtaining the vibration abnormity score in the operation process of the screen basket based on the abrupt change degree of the vibration data, and calculating the coal dehydration granularity according to the vibration abnormity score. Obtaining the temperature anomaly degree at each moment in the operation process of the screen basket, and obtaining the temperature anomaly score in the operation process of the screen basket based on the temperature anomaly degree; the particle size abnormal score in the operation process of the screen basket is obtained, the abnormal degree of operation of the screen basket is obtained according to the particle size abnormal score, the temperature abnormal score and the vibration abnormal score in the operation process of the screen basket, the abnormal operation state of the screen basket is judged according to the abnormal degree, and the accuracy of detection of the operation state of the screen basket of the centrifugal machine is improved.

The invention relates to the field of uranium concentration, and discloses an energy-saving device and method for drying a first-batch centrifugal unit. According to the device, an inlet of a centrifugal machine is connected with an outlet of an evaporator through a pipeline provided with a fourth cooling valve and an eighth cooling valve and is connected to the secondary side of a cooling plate heat exchanger and the secondary side of a heating plate heat exchanger respectively; an outlet of the centrifugal machine is connected with an inlet of the evaporator through a sixth cold valve, a first cold valve and a second water pump. An inlet of the sixth cold valve is connected with the secondary side of the heat supply plate heat exchanger through a first water pump. The primary side of the cold supply plate heat exchanger is connected with a newly-built cooling tower loop, and the primary side of the heat supply plate heat exchanger, the condenser and the newly-built cooling tower form circulation. By optimizing system connection and a heat energy circulation path, the energy utilization efficiency and the equipment utilization rate are effectively improved, and the investment and operation cost is remarkably reduced.

The invention belongs to the technical field of emulsified asphalt recovery devices, and particularly relates to an emulsifying and separating device for waste asphalt regeneration, which comprises a base plate, and a crushing mechanism, an emulsifying mechanism and a centrifugal machine are sequentially arranged on the base plate; a discharge port of the crushing mechanism is communicated with a feed port of the emulsifying mechanism, and a discharge end of the emulsifying mechanism is communicated with the centrifugal machine; the crushing mechanism comprises a crushing box, and the crushing box is sequentially provided with a feeding hopper, a crushing assembly, a smashing assembly and a screening assembly from top to bottom. The emulsifying mechanism comprises a mixing box, a heating unit is arranged on the mixing box, a first stirring assembly and a second stirring assembly are arranged in the mixing box, a driving part is further arranged on the mixing box, and the first stirring assembly and the second stirring assembly are both in transmission fit with the driving part. According to the method, a middle conveying belt conveying link is omitted, the energy consumption and the cost are reduced, resource utilization of the waste asphalt is realized, and remarkable economic benefits are brought to enterprises.

Centrifuge (1) for cleaning a reaction vessel unit (7) with a rotor (2) and a rotor chamber (9) in which the rotor (2) is arranged and rotatably mounted, wherein the rotor (2) has a receiving area (6) for receiving the reaction vessel unit (7), and the rotor chamber (9) is delimited by a housing (3), wherein the housing (3) has an outlet for discharging liquid discharged from the reaction vessels and is provided with an inlet for supplying the rotor chamber (9) with a cleaning solution such that the cleaning solution is distributed in the rotor chamber (9) by rotation of the rotor (2) through contact with the rotor (2), so that the rotor chamber (9) is cleaned, wherein the rotation axis (5) of the rotor (2) runs parallel to a base (16) and wherein the centrifuge has a control device which is designed such that - the rotor chamber (9) is filled with a cleaning solution at least to a level (43) such that when the rotor (2) rotates, it is at least partially immersed in the cleaning solution, - the rotor (2) is rotated, whereby the cleaning solution is distributed in the rotor chamber (9), and - the cleaning solution is removed from the rotor chamber (9).

The invention relates to the technical field of centrifugal machine control, in particular to a lower discharging centrifugal machine control method and system based on a PLC, and the method comprises the steps: obtaining a flow time sequence and a concentration time sequence of a material at a feeding valve in a feeding stage, and a power time sequence of a main motor of a centrifugal machine; obtaining a first characteristic value and a second characteristic value of the control moment by combining a correlation and an average trend of a flow time sequence and a concentration time sequence in a change trend in a time range corresponding to any control moment and a previous control moment, and a periodic fluctuation characteristic of a power time sequence; and a proportion parameter value is obtained by combining the first characteristic value and the second characteristic value, so that the rotating speed of a main motor of the lower discharging centrifugal machine is controlled at the corresponding control moment. The control effect on the main motor of the lower discharging centrifugal machine is improved, and therefore the filtering effect on materials is improved.

The invention discloses a male tussah concentrated solution preparation device and method. The device comprises an equipment frame, the primary extraction assembly comprises a squeezing mechanism and a standing layering mechanism, the squeezing mechanism is provided with a first feeding port, the squeezing mechanism is communicated with the standing layering mechanism, a supernatant extraction mechanism is arranged on the standing layering mechanism, and the squeezing mechanism and the standing layering mechanism are both arranged on the equipment frame; the extracting solution secondary treatment assembly comprises a distillation and concentration mechanism and a freezing mechanism, the distillation and concentration mechanism is communicated with the supernatant extraction mechanism, and the freezing mechanism is communicated with the distillation and concentration mechanism through a first liquid pump; the extracting solution centrifugal treatment assembly comprises a centrifugal mechanism, a collecting mechanism is arranged outside the centrifugal mechanism, and the centrifugal mechanism is communicated with the freezing mechanism through a second liquid pump. The device is relatively high in integration degree, relatively good in operation continuity and more convenient in production, and the time of material conversion between procedures is shortened, so that the production efficiency is improved.

The invention belongs to the technical field of iron ion detection, and particularly relates to a rapid detection method for ferric ions in water, which comprises the following steps: a fluorescent probe preparation step: taking trihydrate of copper nitrate and tryptamine, adding into a centrifuge tube in sequence, adding ultrapure water, performing ultrasonic dissolution, transferring into a high-pressure reaction kettle, and performing hydrothermal reaction to obtain a fluorescent probe; cooling to room temperature, centrifuging the obtained yellow green solution in a centrifugal machine, and filtering the supernate through a microfiltration membrane to obtain a copper-doped carbon quantum dot CuCDs stock solution, namely the fluorescent probe; analyzing and determining Fe < 3 + >: taking the diluent of the prepared CuCDs solution, adding the diluent into a centrifugal tube containing a Fe < 3 + > standard solution, uniformly mixing, carrying out fluorescent quantitative analysis and detection, and exploring the change rule of the fluorescence intensity ratio of CuCDs; according to the rapid detection method for Fe < 3 + > provided by the invention, the synthesized CuCDs have high sensitivity, can realize on-site rapid detection of Fe < 3 + > in a water medium, and shows a wide application prospect in the field of environmental monitoring.

The invention discloses a device and method for detecting the water locking performance of a nursing pad, and relates to the field of material performance tests.The detection method comprises the following steps that S1, a nursing pad sample is fixed to a detection platform, a composite dynamic pressure sequence containing sine fluctuation, stepped pressurization and random disturbance is applied, constant-temperature liquid is injected into the sample synchronously, and the water locking amount is calculated; s2, scanning the three-dimensional distribution of liquid in real time, capturing the expansion state of a core body, triggering sudden stop when the edge leaks, and calculating the water locking efficiency; s3, taking an absorption core material, soaking the absorption core material in normal saline, performing centrifugal dewatering, and calculating the water retention capacity; and S4, constructing a three-level evaluation system output performance report. Composite multi-point pressure is adopted to simulate human body activity mechanics characteristics, a multi-mode sensing technology is combined to track the liquid three-dimensional permeation process in real time, the defects that a traditional method is single in pressure and insufficient in detection dimension are overcome, and dynamic process analysis support which cannot be achieved through traditional static detection is provided for product optimization.

The invention discloses a horizontal spiral discharging sedimentation centrifuge which comprises an assembly cover, a rotary drum, a rotary drum and a spiral conveying blade, wherein the rotary drum and the rotary drum are concentrically arranged. The rotary drum and the rotary drum are of a cylindrical and conical combined structure, and the spiral conveying blade is fixedly connected to the outer side of the rotary drum. A liquid-phase outlet and a solid-phase outlet are respectively formed in two ends of the assembly cover, and a slag discharge port communicated with the solid-phase outlet is formed in the side wall of the rotary drum. The feeding pipe extends into the rotary drum to be connected with the material distribution assembly, the assembly is composed of double rotary discs and a radial material distribution plate, and materials are evenly distributed. The overflow assembly is arranged at the large end of the rotary drum, an adjustable overflow opening is formed through hydraulic adjustment, and the separation effect is optimized. And the driving assembly adopts the design of a differential gear and a redundant motor, so that high-speed and low-speed stable operation of the rotary drum is ensured. The problems that a traditional centrifugal machine is low in separation precision and poor in operation stability are solved, and the solid-liquid separation requirements in the fields of chemical engineering, environmental protection and the like are met.

The utility model discloses an ultrafiltration centrifuge tube for processing trace samples, which comprises an outer tube, an inner tube and an ultrafiltration component which are coaxial with the outer tube are arranged in the outer tube, the inner tube is a hollow tube with two open ends and is positioned between the outer tube and the ultrafiltration component, a plurality of bulges are uniformly distributed on the inner wall of the inner tube in the circumferential direction, and the bulges are communicated with the outer tube. The two ends of each protrusion extend to the two opening ends of the inner pipe in the axial direction of the inner pipe respectively, a flow guide groove is formed between every two adjacent protrusions, and the ultrafiltration assembly comprises a tubular ultrafiltration membrane and an installation frame used for installing the ultrafiltration membrane. According to the utility model, the ultrafiltration membrane is circumferentially arranged in the outer tube and is wound into the tubular structure, so that the effective filtering area of the ultrafiltration membrane in contact with liquid is maximized under the condition that the volume of the ultrafiltration centrifugal tube is limited, and the problems of low concentration efficiency and low centrifugal speed of the existing trace ultrafiltration centrifugal tube are solved. Meanwhile, the ultrafiltration membrane is of a tubular structure coaxial with the outer tube, so that when a sample is centrifuged, the sample tangentially flows on the surface of the ultrafiltration membrane, and the filtering effect is improved.

The application relates to the field of food detection, and discloses a sample pretreatment device for food safety detection, which comprises a shell, a crushing mechanism, a centrifugal mechanism, a material distribution mechanism, a solid-phase extraction mechanism and a nitrogen blowing mechanism are arranged in the shell; juice is obtained after the food sample is crushed, and the juice is subjected to centrifugal treatment in the centrifugal mechanism; the supernatant after centrifugation is temporarily stored and distributed in the material distribution mechanism; the multiple samples after distribution are subjected to solid-phase extraction in the solid-phase extraction mechanism; and the nitrogen blowing mechanism cooperates with the solid-phase extraction mechanism to complete nitrogen blowing work. Through structural innovation and function integration, the crushing, centrifugal, material distribution, extraction and nitrogen blowing concentration five function modules are integrated in the same equipment, the equipment floor area is reduced, the operation process is optimized, the manual intervention frequency is reduced, and the efficiency and reliability of the food safety detection sample pretreatment are remarkably improved.

The invention relates to the technical field of sulfur recovery, in particular to sulfur recovery equipment and a recovery method thereof.The sulfur recovery equipment comprises a recovery box, a reaction box is arranged on the recovery box, an air outlet is formed in the reaction box, an air inlet pipe is arranged on the side wall of the reaction box, lifting mechanisms are arranged in the recovery box and the reaction box, and a spraying mechanism is arranged on the reaction box; and a centrifugal mechanism is arranged in the recycling box. According to the device, the lifting mechanism and the cleaning mechanism are matched, so that the atomizing nozzle can be rotationally cleaned during up-and-down movement, particles are effectively prevented from being blocked at the atomizing nozzle, a desulfurizing agent can be uniformly and smoothly sprayed, and the sulfur recovery efficiency and quality are improved; by arranging the centrifugal mechanism, under the action of centrifugal force, liquid is discharged through the drainage pipe, solid is discharged through the drainage groove, effective separation of the solid and the liquid is achieved, the treatment efficiency and quality are improved through the solid-liquid separation mode, the solid and the liquid can be conveniently and intensively treated in a distinguished mode, and further recycling of resources is facilitated.

The invention relates to the technical field of centrifugal machines, in particular to an automatic discharging control method and system for a top-suspended scraper discharging centrifugal machine, and the method comprises the steps that vibration data and rotating speed data of a rotary drum of the centrifugal machine are obtained; dividing the whole data acquisition time into a plurality of time windows; according to the peak pulse characteristic, the periodic characteristic, the frequency change characteristic and the high-frequency characteristic of the vibration data of each time window, acquiring a comprehensive abnormal coefficient of each time window, and acquiring an abnormal influence coefficient of each time window in combination with the dispersion degree of the rotating speed data of each time window; and according to the change characteristics of the abnormal influence coefficient of the adjacent window of each time window, the unloading abnormal coefficient of each time window is obtained, and then the optimized prediction range parameter of each time window is obtained, so that the scraper movement control of the next time window is optimized. And the unloading efficiency of the centrifugal machine is improved by adaptively adjusting the prediction range parameter of each time window.

The invention discloses a centrifugal machine for sludge dewatering, belongs to the technical field of sludge dewatering, and aims to solve the problems that when the centrifugal machine for sludge dewatering is used, sludge on the inner wall of a rotary drum can be gradually compacted to form a filter cake layer, particles in the filter cake layer easily form a bridging structure at an inlet of a through hole, and the sludge dewatering efficiency is affected. A controller is arranged on the outer wall of the supporting frame, a cylinder is arranged in the supporting frame, one side of the cylinder communicates with a drainage pipe, a first driving assembly is arranged in the cylinder, a dewatering assembly is arranged on one side of the first driving assembly, a second driving assembly is arranged in the cylinder and rotationally connected with the cylinder, and a sewage pumping assembly is arranged at the top of the supporting frame. According to the invention, dual blockage clearing of crushing blockages by the conical rod and purging by high-pressure gas is conveniently realized, shutdown disassembly is not needed, continuous smoothness of the water outlet hole is guaranteed, stable efficiency of centrifugal dewatering is maintained, and the dewatering effect is enhanced.

The utility model discloses a micro-nano powder washing, dispersing and filtering device, which relates to the technical field of powder washing and separating equipment and comprises an outer barrel and a centrifugal barrel, a plurality of through holes I are arranged on the barrel wall of the centrifugal barrel, filter cloth is mounted close to the inner wall of the centrifugal barrel, the barrel bottom of the centrifugal barrel is a smooth arc-shaped bottom surface, and a discharge port is arranged in the center of the bottom of the centrifugal barrel. The bottom of the centrifugal barrel is connected with a driving motor I through a transmission assembly penetrating through the outer barrel, the driving motor I drives the centrifugal barrel to rotate, a liquid outlet is formed in the bottom of the outer barrel, and the problems that in the prior art, micro-nano powder is difficult to wash and disperse, and agglomeration and hardening are prone to occurring when a conventional centrifugal machine is adopted for washing and dispersing are solved.

The invention relates to the technical field of centrifugal machines, in particular to a variable-frequency energy-saving automatic control system of a centrifugal machine, which comprises a centrifugal module used for separating materials according to the centrifugal machine to obtain a target product and comprising a driving motor used for providing centrifugal power; the data processing module comprises a data acquisition unit used for acquiring operation data of the centrifugal machine; the frequency conversion self-control module comprises a main MCU (Microprogrammed Control Unit) for outputting an adjusting strategy of the centrifugal machine according to a neural network model; the counting adjusting module is used for determining the counting frequency of the timer in the slave MCU according to the start-stop response duration of the driving motor; the feed-forward adjusting module is used for determining the feed-forward lead of the auxiliary motor according to the phase deviation value of the PWM signal; and the cache adjustment module is used for determining an operation data cache trigger threshold according to the slave MCU instruction response deviation duration. The real-time performance of frequency conversion self-control of the centrifugal machine is improved.

The invention discloses a high-purity P-PRP preparation system and a preparation method thereof. The high-purity P-PRP preparation system comprises a sterile syringe for sampling, a centrifugal machine for providing a centrifugal effect, a centrifugal sleeve and a separator for purifying a sample of the centrifuged sterile syringe, the centrifugal sleeves are of two types and comprise an inverted centrifugal sleeve used for first-time centrifugation and an upright centrifugal sleeve used for second-time centrifugation. The preparation method comprises the steps of sample preparation, primary centrifugation, purification and re-sampling, secondary centrifugation, final sampling and the like, and finally the leukocyte-depleted platelet-rich plasma with high purity is obtained. According to the system and the method, a conventional medical general syringe can be directly used for the closed centrifugal sleeve, the problem that the syringe makes contact with the outside in the transferring and centrifuging process is effectively solved, the pollution risk in the PRP preparation process is reduced, meanwhile, P-PRP is conveniently extracted, the influence of liquid hanging on the wall on purity is avoided, the purity is improved, and residual pollution is rejected.

A portable centrifuge comprising a base, which includes a rotational mechanism contained within. A sequester wheel having a plurality of concentric rings, forming at least one channel and a central container. The at least one channel comprising a second volume and the central container comprising a first volume. A first cover is disposed over the sequester wheel to create a seal. A second cover is disposed over the first cover and is rotatable to engage with the rotational mechanism to initiate rotation at a predetermined RPM. The whole blood and / or other tissue is separated into its constituent components and deposited into the at least one channel and the central container. Specific volumes of the constituent components may be calculated to match or substantially match the first and second volumes for predetermined volume control and ease of access.

The invention relates to the technical field of horizontal screw sedimentation centrifuges, in particular to a horizontal screw sedimentation centrifuge with an automatic feeding and discharging module, which comprises a rack, a rotary drum is rotatably mounted on the rack, two groups of housings are arranged on the rack, a spiral pusher is rotatably mounted in the rotary drum, a coupling shaft is fixedly mounted at one end of the spiral pusher, and a feeding and discharging module is arranged on the coupling shaft. A feeding pipe is arranged on one side of the connecting shaft, a feeding treatment mechanism is arranged on the feeding pipe, a detection speed reducing mechanism is arranged on the outer side of the connecting shaft, a mounting cover is arranged on the outer side of the rotary drum, and an extrusion vibration mechanism is arranged on the mounting cover; auxiliary speed reduction is performed on the connecting shaft rotating at a high speed through the detection speed reduction mechanism, meanwhile, auxiliary extrusion dewatering is performed on a solid phase which is not fully dewatered, and meanwhile vibration is generated at the feeding port so as to vibrate and dredge materials accumulated at the feeding port, so that the situation that follow-up treatment work is affected due to the fact that the materials are accumulated at the feeding port is avoided.

The invention relates to the technical field of centrifugal machine intelligent control, in particular to an intelligent control system of a high-speed centrifugal machine, and the system comprises a sensing module which is used for collecting operation state parameters of the centrifugal machine in real time, carrying out the synchronous sampling of the operation state parameters, and generating multi-mode operation data; the dynamic modeling module is used for correcting parameters of the dynamic physical model in real time so as to generate a characteristic parameter set reflecting the overall dynamic state of the centrifugal machine; the control execution module is used for adjusting the rotating speed and the running time of the centrifugal machine driving motor in real time to realize closed-loop control; the automatic control module is used for adaptively correcting control strategy parameters according to a learning result so as to generate a dynamically updated centrifugal control curve and sending the centrifugal control curve to the control execution module so as to execute real-time control; and the sample characteristic data module is used for storing the sample characteristic data. And the operation stability, the control precision and the self-adaptive capacity of the centrifugal machine can be improved.

The application relates to an exosome extraction centrifuge tube, which comprises a tube body, a first filter and a second filter, a sealing rubber cap is arranged at the upper end of the tube body, and the first filter and the second filter are arranged in the tube body in a spaced mode; the tube body comprises an upper branch pipe and a lower branch pipe, the lower branch pipe is provided with an annular groove, the upper branch pipe is provided with a connecting sleeve, the connecting sleeve can be inserted into the annular groove and is in threaded connection with the lower branch pipe, the first filter is located in the upper branch pipe, and the second filter is located in the lower branch pipe. The exosome extraction centrifuge tube is provided with the first filter and the second filter, so that the body fluid is filtered twice, thereby obtaining exosomes of a specified specification in the exosome extraction centrifuge tube at one time, and the exosomes do not need to be extracted through secondary separation, and the quality of exosome filtration and extraction is improved.

The invention discloses a centrifugal machine rotating speed control method and system based on image recognition. The method comprises the following steps: acquiring each frame of preprocessed rotor region image; feature point extraction is carried out on each continuous two frames of images of each frame of preprocessed rotor region image, so that a rotation angle, an angular velocity estimation value and a rotor motion track are obtained; obtaining a fused rotation angle and an angular velocity estimation value according to the preprocessed rotor region image; according to the fused rotation angle and angular velocity estimation value, the rotation angle and angular velocity estimation value after self-adaptive fusion is obtained; calculating a real-time rotating speed estimation value of the centrifugal machine; generating a corrected real-time rotating speed estimated value according to the real-time rotating speed estimated value; and acquiring a control signal according to the corrected real-time rotating speed estimation value. According to the technical scheme, the anti-interference performance, the control precision and the environmental adaptability of the system can be remarkably improved, and the high-precision and high-stability control requirements of the high-speed centrifugal machine are met.

The application provides a centrifuge fault early warning method, device and equipment, and relates to the centrifuge field, which solves the problem that the centrifuge must be stopped during the working process. The centrifuge fault early warning method is characterized in that: the rotor system of the centrifuge is discretized, at least one component of the discretized rotor system is obtained, the rotor system motion equation is determined according to the at least one component, the rotor system motion equation is corrected, the centrifuge fault prediction model is determined through the corrected rotor system motion equation, the real-time parameters of the at least one component of the discretized rotor system of the centrifuge are input into the centrifuge fault prediction model for prediction, the fault prediction result including the offset degree of the at least one component of the discretized rotor system is obtained, and the functions of online monitoring, trend analysis and fault early warning of the centrifuge are realized, so that the preventive maintenance of the centrifuge is achieved.