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71results about How to "Achieve perturbation" patented technology

Screening apparatus for green tea processing based on electromagnetic vibration principle

PendingCN107694923AProtect your healthRealize high-efficiency screeningSievingPre-extraction tea treatmentGreen teasEngineering
A screening apparatus for green tea processing based on the electromagnetic vibration principle comprises a housing and an upper cover; the inner wall of the housing is provided with a slideway, a slide screen is arranged on the slideway, soft iron is arranged at the lower center of the slide screen, the inner bottom of the housing is provided with a first cavity right below the soft iron, an electromagnetic core is arranged in the first cavity, an electromagnetic coil is wound on the electromagnetic core and is electrically connected with a power supply, a plurality of first springs are alsoarranged at the inner bottom of the housing, the slide screen is positioned above the first springs, the upper portion of the housing is provided with an exhaust pipe, and the exhaust pipe is connected with a dust collector positioned outside the housing. The screening apparatus for green tea processing based on the electromagnetic vibration principle has the advantages that the dust collector sucks out dust in the housing to effectively protect body health of an operator; the slide screen is vertically vibrated through the first springs and the electromagnetic coil, and efficient screening ofgreen tea is achieved. The apparatus for green tea processing based on the electromagnetic vibration principle is reasonable in structural design and simple to operate.
Owner:HUBEI XINGMENG TEA CO LTD

Multi-group section perturbation method for uncertainty analysis of reactor physics calculation

The invention relates to a multi-group section perturbation method for uncertainty analysis of reactor physics calculation. The multi-group section perturbation method comprises the following steps: (1), on the basis of ENDF / B, making a multi-group section database and a point-by-point section database at different temperatures by using a nuclear database section processing program NJOY, and making the point-by-point section database in a resonant reaction channel at a resonant energy section into an ultra-fine-group database according to the equal rib width; (2), perturbing the point-by-point section database in the energy section corresponding to a certain energy group in a certain reaction channel so as to obtain a perturbed point-by-point section database; (3), strictly transferring perturbation of the point-by-point section database into the multi-group section database by using a linear and nonlinear perturbation transferring method; and (4), reconstructing by adopting a reaction channel section self-consistency principle to obtain a perturbed multi-group section database. According to the invention, the section of a basic reaction channel can be finely sampled; approximate treatment in the multi-group section perturbation process can also be reduced; and thus, a precise multi-group section sample can be obtained.
Owner:XI AN JIAOTONG UNIV

Steady motion visual evoked potential brain computer interface method based on stochastic resonance enhancement

Provided is a steady motion visual evoked potential brain computer interface method based on stochastic resonance enhancement. First, an electrode is arranged on the head of a user, a detected electroencephalogram signal is sent to a computer, then movement stimulating units are presented in front of the user through a computer screen at the same time, the movement stimulating units are shielded by two-dimensional noise points obeying Gaussian distribution, the noise point update frequency is synchronized with the screen refresh rate, and the noise strength is represented by Gaussian distribution standard deviation. After the movement stimulating units are formed, the user watches any one of the movement stimulating units, a computer acquires a stimulation starting flag bit and a stimulation finishing flag bit, a computer signal is acquired through a test electrode, the significance probabilities of different stimulation targets are calculated, the targets are judged and indicated through the screen, and then the next target identification is conducted. The steady motion visual evoked potential brain computer interface method based on stochastic resonance enhancement can remarkably enhance brain response strength of the user, improve precision and efficiency of an existing brain computer interface, and innovatively improve practical level of the brain computer interface technology.
Owner:XI AN JIAOTONG UNIV

Multidirectional corrugated inner finned tube

The invention provides a multidirectional corrugated inner finned tube which comprises an outer tube, a plurality of multidirectional corrugated inner fins are uniformly distributed on the inner circumferential face of the outer tube. Each multidirectional corrugated inner fin comprises a root, two straight walls and two bends. Multidirectional corrugated patterns are distributed on the two straight walls, and lines of the multidirectional corrugated patterns on the same straight wall are consistent in tendency. The bends and the inner surface of the outer tube are in a brazing manner. The straight walls extend radially along the outer tube. The outer tube and the multidirectional corrugated inner fins form a plurality of parallel circulating channels. The multidirectional corrugated inner finned tube provided by the invention has various structural patterns and is easy to form and process. Compared with an optical tube, the effective heat transfer area is remarkably increased, so that the flow medium flow pattern in the tube is forcibly guided. The secondary flow is enhanced, the transverse turbulent flow is aggravated, the turbulivity is increased and the boundary layer of a flow medium is strongly interfered, so that the purpose of efficiently enhancing the heat transfer is realized. Meanwhile, the vertical flowing resistance in the tube can be controlled. Compared with the common finned tube, the resistance is remarkably reduced with the same thermal load.
Owner:NANJING UNIV OF TECH

Impedance measurement method of three-phase alternating current system

InactiveCN103376363ASimple test platformSimplify data processing stepsResistance/reactance/impedenceEngineeringThree-phase
The invention provides an impedance measurement method of a three-phase alternating current system. The impedance measurement method of the three-phase alternating current system includes the following steps that a frequency sweeping signal sent by the output end of a network analyzing instrument is linked with a frequency detecting link, and the real-time frequency of the frequency sweeping signal is obtained through the frequency detecting link; the real-time frequency obtained by the frequency detecting link subtracts or adds a synchronizing frequency according to the measuring step. After the frequency is processed and obtained through the mentioned steps, an angle changing along with variation of the frequency is obtained through an integration element and consequentially, a sinusoidal signal is further generated and injected into a detected system. A voltage and current signal of a boundary of a system source module and a loading module is collected to carry out dq conversion. The converted signals are sequentially returned to the network analyzing instrument through a multiplexer. Two sets of voltage and current signals which are eight in total are obtained by the network analyzing instrument and used for setting up equation sets, the equation sets are combined for concluding a solution and then, the impedance of the detected system can be obtained. The set-up testing system is simple in structure and late-stage data are easy to process.
Owner:XI AN JIAOTONG UNIV

Reservoir underwater walking sand suction and discharge device

The invention provides a reservoir underwater walking sand suction and discharge device. The device comprises a working ship, a water pump, an air pump, a windlass and a positioning system arranged on the working ship, and a porous sand suction disc arranged on a silting bed surface of the bottom of a reservoir. An annular air cavity is formed in the porous sand suction disc; a sand punching hole and a sand suction hole are formed in the porous sand suction disc; the water pump is communicated with the sand punching hole through a water charging pipe; the sand suction hole is connected into a dam sand discharge hole through a sand conveying pipe; the air pump is communicated with the annular air cavity through an inflation pipe; and the windlass is connected with the porous sand suction disc through a traction steel rope. The device is arranged in a reservoir area; high-pressure water is injected in the sand punching hole of the porous sand suction disc through the water pump for dispersing and disturbing silted sediments of the reservoir; a high-concentration water and sand mixture is sucked through the sand suction hole of the porous sand suction disc and the sand conveying pipe for realizing efficient dam passing of the silted sediments of the reservoir; the dispersion, the disturbance and the suction of the silted sediments at the bottom of the reservoir can be synchronously realized; high-concentration muddy water is easy to form; the water consumption is low; and the sand sucking and desilting efficiency is high.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

An improved algorithm for carrying out abnormal mining on density irregular data based on DBSCAN

The invention discloses an improved algorithm for carrying out abnormal mining on density irregular data based on DBSCAN, and relates to the field of data mining. In order to overcome the defect thata DBSCAN algorithm is poor in effect on a non-uniform density data set, the invention provides an improved method combining the K-means algorithm and a DBSCAN. The method comprises the following stepsof firstly improving the K-means algorithm by utilizing a differential evolution method; speeding up the convergence speed of the algorithm to obtain the optimal clustering division and clustering number, and then utilizing the improved K-means algorithm to perform the preliminary division on a data set with non-uniform density, and then performing the abnormal detection on a divided sub-data setby means of the DBSCAN algorithm, and finally analyzing and combining the detection results to obtain a final set. Compared with a traditional improved algorithm, the accuracy is improved, the speedis higher, the efficiency is improved, and the requirement for high efficiency of the abnormal data mining is met.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Garbage pyrolysis and gasification incineration system and process

The invention particularly relates to a garbage pyrolysis and gasification incineration system and process. According to the garbage pyrolysis and gasification incineration system, a pyrolysis and gasification furnace, a high-temperature heat exchanger, a quench tower, a demister, a dust collector and an exhausting device are connected successively, and the pyrolysis and gasification furnace is provided with a drying area, a pyrolysis area, a gasification area, an ash after-combustion area and a gas combustion area which are integrally formed. The drying area is further provided with an exhaust gas recovery pipeline to extract water vapor generated in a garbage drying process on the one hand to improve the stability of garbage pyrolysis and gasification and combustion reaction processes, and on the other hand, the dried exhaust gas can be further taken as primary combustion air of gas combustion. Heat generated by garbage incineration is distributed again to enter an incineration furnace to assist garbage combustion. The system can operate stably by controlling an air distribution proportion without extra energy for supporting combustion. A low generation rate of pollutants such asdioxin, heavy metals, oxynitride and oxysulfide can be further guaranteed. The garbage pyrolysis and gasification incineration system and process have good popularization and application value.
Owner:山东百川同创能源有限公司

Unmanned helicopter location tracking method and apparatus

The invention discloses an unmanned helicopter location tracking method and apparatus. The method includes determining the kinematic equation and kinetic equation of an unmanned helicopter according to the principles of aerodynamics and rigid mechanics; determining the linear velocity error differential equation of the unmanned helicopter according to the kinematic equation, the kinetic equation and the pre-set virtual controller equation; and determining the operation equation of an adaptive controller based on robust neural network according to the linear velocity error differential equation, wherein the operation equation of an adaptive controller includes robust adaptive parameters and neural network parameters. According to the robust adaptive parameter equation and the neural network parameter equation included in the adaptive law equation, the compensation of the external disturbance of the UAV can be realized, and the on-line estimation of the unknown parameters of the system can be realized, and therefore, the location of the unmanned helicopter can accurately calculated according to the operation equation of an adaptive controller under the conditions that system parameters are unknown and external disturbance occurs.
Owner:GUANGDONG UNIV OF TECH

Method and electric switch for testing an energy generator or energy consumer which can be attached to an electrical energy supply network

The method involves influencing voltage (Vpcc) using a converter circuit (29), where the voltage like at a connection point (P) to which an energy generator or an energy consumer is attached. A series connection is designed from an induction coil (31) and a switch (32). The series connection is coupled with the connection point. The converter circuit is influenced such that the voltage is transferred to the connection point in a desired value and the switch is closed. A parallel circuit is designed from an induction coil and another switch.
Owner:科孚德有限公司

Electromachining method with controllable tool electrode rotating speed for micro-holes and speed adjustment system

ActiveCN106392216AImprove processing qualityAvoid Difficult Chip EvacuationElectrochemical responseElectricity
The invention provides an electromachining method with controllable tool electrode rotating speed for micro-holes and a speed adjustment system, and belongs to the technical field of non-traditional machining. According to the electromachining method, neutral salt solution with the extremely low concentration serves as electrolyte, corresponding voltages are applied to two poles of the electrolyte, the gas film covering status of the surface of a tool electrode is adjusted through control over the tool electrode rotating speed, and if the tool electrode rotating speed is high, discharging reaction occurs when the gas film covering status meets the generation condition of the discharging reaction; if the tool electrode rotating speed is low, electrochemical reaction occurs; and controllable compounding of electrochemical machining and discharging machining is achieved through control over the tool electrode rotating speed. According to the electromachining method with the controllable tool electrode rotating speed for the micro-holes and the speed adjustment system, good surface machining quality and machining consistency can be achieved.
Owner:ANHUI UNIV OF SCI & TECH

Horizontal type adjustable rubbing and scrubbing machine

The invention discloses a horizontal type adjustable rubbing and scrubbing machine. The horizontal type adjustable rubbing and scrubbing machine comprises a machine frame, a reducer, a revolving shaft, a barrel body, a slag collection tank and a vibrating screen, wherein the reducer is arranged on the side wall of the machine frame, the revolving shaft transversely penetrates through the barrel body and is connected with the reducer, the barrel body is placed horizontally, the barrel body comprises a feeding section, a rubbing and scrubbing section and a discharging section, the slag collection tank is formed below the barrel body, and the vibrating screen is arranged below the slag collection tank. The horizontal type adjustable rubbing and scrubbing machine is suitable for rubbing and scrubbing waste plastic pieces, and the rubbing and scrubbing effects are significant.
Owner:ZHEJIANG BORETECH

Efficient passive containment cooling system adopting transmission device

The invention provides an efficient passive containment cooling system adopting a transmission device, when a break accident occurs, a heat exchange device is a core component used for achieving passive containment cooling, the heat exchange device is connected with an external water tank through an upper pipe section and a lower pipe section, and sprayed high-temperature steam is condensed on the outer surface of a heat exchange pipe. A collecting device is used for collecting a condensed coolant in a containment, and the upper section groove, the upper section drainage pipe and the reducing pipe can be used for collecting liquid condensed by the upper half part of the containment and the heat exchange device and are matched with the water bucket type transmission device to work. A coolant after acting and a coolant collected by a lower-section groove and a lower-section drainage pipe are sent to a pit to participate in reactor core cooling cycle. A water bucket type transmission device transmits kinetic energy of coolants in a pipeline to an impeller through a mechanical structure and conveys the kinetic energy to the position near the heat exchange device, and the heat exchange efficiency is improved in cooperation with fan blades blowing / sucking heat exchange pipes.
Owner:HARBIN ENG UNIV

GAP promoter library and application thereof

The invention relates to a GAP promoter library and application thereof. The invention discloses a nucleic acid sequence of each promoter in the GAP promoter library, a vector and a host cell which contain the nucleic acid sequence. The invention also discloses a method for screening a required mutation promoter. The invention establishes an effective screening model, obtains the mutation GAP promoter library with strength of graded distribution, and can realize continuous fine adjustment on expression of a target gene.
Owner:EAST CHINA UNIV OF SCI & TECH

Production equipment and production method of melaleuca alternifolia leaf oil antibacterial wet tissues

The invention discloses production equipment and a production method of melaleuca alternifolia leaf oil antibacterial wet tissues, and aims to solve the problems that non-woven fabrics are easily soaked unevenly in the production process of the antibacterial wet tissues and are easily folded in a soaking box to generate creases, so that the attractive effect of the wet tissues is influenced, the antibacterial effect of the wet tissues is reduced due to uneven soaking, and the overall quality of the wet tissues is influenced. According to the scheme, the production equipment comprises a soakingbox and a support, a box cover is connected to one side of the outer wall of the top of the soaking box through a hinge, a disturbance motor is fixed to the outer wall of the top of the box cover through screws, and a rotating shaft is fixed to the top end of an output shaft of the disturbance motor through screws. According to the production equipment, an upper clamping roller and a lower clamping roller at the left side and the right side rotate synchronously through a clamping roller motor, so that the wet tissues in a middle section are kept in a relatively soft state all the time, the non-woven fabrics cannot be folded to generate the creases, the soaking time of the non-woven fabrics is prolonged, the non-woven fabrics fully absorb antibacterial liquid, the attractive effect of thewet tissues is guaranteed, and the antibacterial effect and the overall quality of the wet tissues are improved.
Owner:武汉中森医疗用品有限公司

Circulating fluidized bed boiler bed temperature event-driven control system based on state feedback

The invention relates to a circulating fluidized bed boiler bed temperature event-driven control system based on state feedback. The event-driven control system comprises a circulating fluidized bed boiler, a data collection and storage device and a controller. The circulating fluidized bed boiler comprises a sensor and an actuator. The data collection and storage device is used for collecting and storing data related to bed temperature control of the circulating fluidized bed boiler. The controller is connected with the data collection and storage device and receives the data transmitted and collected by the data collection and storage device. According to the received data, the controller generates a primary air volume instruction and transmits the primary air volume instruction to the actuator in the circulating fluidized bed boiler so that the accuracy and the stationarity of primary air volume control can be achieved. According to the circulating fluidized bed boiler bed temperature event-driven control system based on the state feedback, on the basis that the bed temperature of the circulating fluidized bed boiler can be effectively adjusted, through reasonable parameter adjustment, the data communication traffic among the sensor, the controller and the actuator is decreased, and network information congestion is relieved.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Ventilation equipment and civil air defense engineering ventilation system

The invention discloses ventilation equipment and a civil air defense engineering ventilation system. The ventilation equipment comprises a box body, an air blowing cylinder and an air suction cylinder, wherein the air blowing cylinder and the air suction cylinder are located below the box body and are oppositely arranged; the air blowing cylinder communicates with an air blowing mechanism through a first air pipe; the air suction cylinder communicates with an air draft mechanism through a second air pipe; and the air draft mechanism communicates with an external exhaust main pipe. According to the ventilation equipment and the civil air defense engineering ventilation system, the air blowing cylinder and the air suction cylinder are oppositely arranged, forced convection of air in the space in the civil air defense engineering is realized, so that the air is sucked through forced convection, a good exhaust effect is achieved, and the air exchange effect is improved; and a swing mechanism is arranged, so that the first air pipe and the second air pipe swing, then the air blowing cylinder and the air suction cylinder are driven to swing, a good pumping and discharging effect on the air at different heights in the whole space is achieved, and meanwhile, the fluidity of the air is further improved.
Owner:重庆北永建设工程有限公司

Concentrated eight-treasure porridge slurry stirring and cooking pot

The invention discloses a concentrated eight-treasure porridge slurry stirring and cooking pot which comprises a pot body, a motor, a reducer and a stirring shaft, wherein the stirring shaft is inserted into the pot body; the motor and the reducer drive the stirring shaft to rotate; a bottom sweeping stirrer, a multistage serial bottom jet stirrer, a two-way jet stirrer and a suspended bottom jet stirrer are sequentially arranged on the stirring shaft from bottom to top; the suspended bottom jet stirrer is limited by upper and lower positioning steps and can float up and down; a jacket is arranged outside the pot body and is connected with a steam valve, a drain valve and a direct discharging valve; the jacket is also connected with a water inlet valve and a water return pipe control valve; and the bottom of the pot body is communicated with a steam valve and a medium-pressure blower. The stirring and cooking pot disclosed by the invention has the characteristics that the energy consumption is low, each processing step of the eight-treasure porridge can be finished, the materials circulate well and are difficult to sink to the bottom, and even if material settling is caused due to long-term power failure, light-load startup can be realized. Moreover, the application prospects are wide.
Owner:安徽省阜阳市海泉粮油工业股份有限公司

Steady-state motor visual evoked potential brain-computer interface method based on stochastic resonance enhancement

Steady-state motor visual evoked potential brain-computer interface method based on stochastic resonance enhancement. Electrodes are placed on the user's head first, and the measured EEG signals are sent to the computer, and then the motion stimulation unit is simultaneously presented to the user through the computer screen. The motion stimulation unit is covered with two-dimensional noise points that obey the Gaussian distribution. The update frequency of the noise point is synchronized with the screen refresh rate. The noise intensity is characterized by the standard deviation of the Gaussian distribution. After the motion stimulation unit is formed, the user looks at any one of the motion stimulation units. The computer collects the stimulation start and end flags synchronously, and collects EEG signals through the test electrodes, calculates the significance probability of different stimulation targets, judges and indicates the targets through the screen, and then performs the next target recognition. The present invention can significantly enhance the use of The strength of the brain response of the patient, the accuracy and efficiency of the existing brain-computer interface are improved, and the practical level of the brain-computer interface technology is innovatively improved.
Owner:XI AN JIAOTONG UNIV

Adsorption cylinder device

The invention discloses an adsorption cylinder device which comprises a rectangular frame, a plurality of adsorption cylinders are mounted at the top of the rectangular frame; a plurality of metal netcolumns filled with activated carbon are mounted on the outer side of each adsorption cylinder; a plurality of air inlet holes are formed in the area, corresponding to the metal net column, of the outer side of each adsorption cylinder; one side of the rectangular frame is communicated with an air suction pipe; the air suction pipe is communicated with the bottoms of the plurality of adsorption cylinders; a disturbance device for preventing activated carbon from gathering and improving the utilization efficiency of the activated carbon is mounted on the outer sides of the adsorption cylinders; the disturbance device is additionally arranged at the bottom of the adsorption cylinders, so that activated carbon in the multiple metal net columns is disturbed, the phenomenon that the activatedcarbon in the metal net columns is gathered is avoided, the adsorption effect of the activated carbon is further improved, the situation that the activated carbon blocks filter holes can be reduced, gas circulation is improved, and the gas adsorption efficiency is improved.
Owner:ZHEJIANG GUTE PNEUMATIC MACHINERY

Multi-directional corrugated inner finned tube

The invention provides a multi-directional corrugated inner fin tube, which includes an outer tube, and a plurality of multi-directional corrugated inner fins are evenly distributed on the inner peripheral surface of the outer tube; the multi-directional corrugated inner fins include a root, two A straight wall and two bends, the two straight walls are distributed with multidirectional corrugations, which are consistent with the trend of the multidirectional corrugations on the straight wall; the bends are brazed with the inner surface of the outer tube; The straight wall extends radially along the outer tube; the outer tube and the multi-directional corrugated inner fins form a plurality of parallel flow passages. The multi-directional corrugated inner finned tube provided by the present invention has a variety of structures and is easy to form and process. The flow is intensified, the degree of turbulence is increased, and the boundary layer of the fluid medium is strongly disturbed to achieve the purpose of enhancing heat transfer efficiently. At the same time, the longitudinal flow resistance in the tube is controllable. Compared with ordinary inner finned tubes, the resistance is significantly reduced under the same heat load.
Owner:NANJING TECH UNIV

Acid and alkali resistant rapid liquid mixing application sample separation device and method

The invention belongs to the technical field of oil production engineering. An acid and alkali resistant rapid mixing liquid application sample separation device, which comprises a feeding part, a mixing part and a liquid storage sample separation part; the feeding part is used for containing a solution to be mixed; the mixing part is arranged at the bottom of the feeding part and is used for uniformly mixing a to-be-mixed solution; the liquid storage and sample separation part is arranged at the bottom of the mixing part and is used for storing the mixed solution and sampling in groups. The invention further discloses an acid and alkali resistant rapid mixing liquid application sample separation method. The problems of acid-base solution mixing and sample separation can be solved, and static liquid mixing and sample separation are achieved through fluid mechanics. The static liquid mixing and sample separating device is reasonable in overall structural design, can be applied to strongacid or strong base or other liquid with the viscosity smaller than 200 mPa.s, is internally provided with no electronic driving assembly, and achieves static liquid mixing and sample separating by means of the hydromechanics principle.
Owner:DAQING OILFIELD CO LTD +1

Spiral feeder used for fluidized-bed-type fast biomass pyrolysis

ActiveCN102492444BImprove mechanical seal performanceAchieve perturbationBiofuelsLarge containersFluidized bedMechanical engineering
The invention relates to a feeding device, in particular to a spiral feeder used for fluidized-bed-type fast biomass pyrolysis. A storage bin is arranged above an air seal machine, material in the storage bin is conveyed into the shell of the feeder by virtue of the air seal machine, and biomass is continuously pushed into a fluidized bed reactor by virtue of an auger arranged in the shell. By virtue of mechanical sealing of the air seal machine and pressure separation and air locking of material filled in a conveying pipe, the feeder does not generate back spraying phenomenon; a stirring bar member is arranged in the storage bin, and power is provided for the stirring bar member while the air seal machine rotates to discharge material, so that the stirring bar member moves up and down and stirs the material, and phenomena of bridging, hanging on the wall and the like can be avoided; meanwhile, a variable frequency motor is connected with a gear transmission box to provide power for the auger and the air seal machine, and feed rates of the auger and the air seal machine are guaranteed to be consistent by virtue of speed ratio.
Owner:BEIJING FORESTRY UNIVERSITY

Aquatic product seedling culture bottle rolling machine

The invention provides an aquatic product seedling culture bottle rolling machine which comprises a frame, a rotor and a rolling bottle. The frame is provided with a fixed frame and a gear motor box,the gear motor box is provided with a power supply connector and a motor driving wheel, the frame is provided with a fixed roller, a roller shaft, a connecting rod, the rotor is provided with a frontrotating disk, the front rotating disk is provided with a rolling bottle mounting hole and a front rotating disk bearing, the rotor is provided with a rear rotating disk, the rear rotating disk is provided with a rolling bottle observation hole and a rear rotating disk bearing, and the rotor is provided with a large-diameter unpowered roller and a small-diameter unpowered roller. The aquatic product seedling culture bottle rolling machine has the advantages of simple structure, small size, high storage capability, uniform water disturbance, stable rotating speed and the like.
Owner:NINGBO UNIV

An underwater walking sand suction and discharge device for a reservoir

The invention provides a reservoir underwater walking sand suction and discharge device. The device comprises a working ship, a water pump, an air pump, a windlass and a positioning system arranged on the working ship, and a porous sand suction disc arranged on a silting bed surface of the bottom of a reservoir. An annular air cavity is formed in the porous sand suction disc; a sand punching hole and a sand suction hole are formed in the porous sand suction disc; the water pump is communicated with the sand punching hole through a water charging pipe; the sand suction hole is connected into a dam sand discharge hole through a sand conveying pipe; the air pump is communicated with the annular air cavity through an inflation pipe; and the windlass is connected with the porous sand suction disc through a traction steel rope. The device is arranged in a reservoir area; high-pressure water is injected in the sand punching hole of the porous sand suction disc through the water pump for dispersing and disturbing silted sediments of the reservoir; a high-concentration water and sand mixture is sucked through the sand suction hole of the porous sand suction disc and the sand conveying pipe for realizing efficient dam passing of the silted sediments of the reservoir; the dispersion, the disturbance and the suction of the silted sediments at the bottom of the reservoir can be synchronously realized; high-concentration muddy water is easy to form; the water consumption is low; and the sand sucking and desilting efficiency is high.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

Wound healing protection device for surgical nursing

The invention relates to the technical field of medical supplies, in particular to a wound healing protection device for surgical nursing. The wound healing protection device for surgical nursing comprises a protection shell, ventilation windows are formed in the two opposite side walls of the protection shell, and the ventilation windows are blocked through gauze; a ventilation mechanism is arranged in the protection shell and matched with the ventilation windows, and the ventilation mechanism is used for stirring air in the protection shell to form circulation; a quantitative dosing mechanism is fixed at the top end of the protection shell; a ring is used for being attached to the skin on the outer side of a wound and supporting the protection shell, and an adhesive tape is arranged on the outer side of the ring. The wound healing protection device for surgical nursing is scientific and reasonable in structural design, covers the outer side of a wound stably, and can flexibly achieve the purposes of improving the air permeability of the wound position and adding medicine regularly and quantitatively in the using process, so that wound healing is better promoted, the wound recovery period is shortened, and the workload of surgical nursing is reduced.
Owner:THE AFFILIATED HOSPITAL OF SHANDONG UNIV OF TCM

Alkyd resin production device

The invention discloses an alkyd resin production device which comprises a sleeve shell, a mixing mechanism is installed in the sleeve shell, plug blocks are machined at the top ends of first rotatingshafts, the multiple first rotating shafts are connected in a sleeving mode through the plug blocks, and the outer walls of the first rotating shafts are evenly and fixedly connected with multiple rotating discs. A plurality of vertical plates are evenly and fixedly connected to the upper surfaces of the rotating discs, baffle rings are arranged above the rotating discs, sleeves are attached to the lower surfaces of the baffle rings, the lower surfaces of the sleeves are attached to the upper surfaces of the baffle rings below the sleeves, and the outer walls of the baffle rings and the outerwalls of the sleeves are connected with the inner wall of the sleeve shell in a sleeving mode. The alkyd resin production device can effectively realize mixing of various materials, can realize multi-stage mixing according to actual requirements so as to ensure the mixing efficiency, does not stop in the material mixing process, can ensure the completion of mixing operation when materials are output, saves the working time, and is simple in use method, high in practicability and convenient to popularize.
Owner:曾维权

Intelligent pressure-controlled administration enemator and use method thereof

The invention relates to the technical field of intelligent auxiliary equipment, in particular to an intelligent pressure control administration enemator which comprises: a flexible medicine bag used for containing enema liquid medicine and provided with an open end and an infusion tube; an insertion tube which is connected to the infusion tube, wherein an open hole penetrating through the tube wall is formed in the end of the insertion tube; a bearing container which is provided with a containing cavity used for containing the flexible medicine bag, wherein the infusion tube penetrates out of the bottom of the bearing container; and a sealing cover which is arranged to be capable of sealing the open end of the containing cavity of the bearing container, so that a sealed cavity is formed in the flexible medicine bag. A texture portion is provided at a predetermined length of the insertion tube, and the insertion depth of the insertion tube is perceived with a feeling of touch when a patient operates alone. On the other hand, a sealed space is built outside the flexible medicine bag, gas is inflated into the sealed space for pressurization, liquid medicine is controlled to be supplied to the insertion pipe at the preset flow speed, meanwhile, the periphery of a liquid supply opening in the bottom of the flexible medicine bag is purged, and medicine residues are prevented from being accumulated at the liquid supply opening.
Owner:JIANGSU PROVINCIAL HOSPITAL OF TCM

Tea leaf processing equipment with stir-frying cavity and drying cavity

A tea processing equipment with a frying cavity and a drying cavity, comprising a processing shell, a dividing device is fixedly connected to the inner side wall of the processing shell, the inside of the processing shell on the upper side of the dividing device is a frying cavity, and the dividing device The interior of the processing shell on the lower side is a drying chamber; a frying device is arranged inside the frying chamber, and several heating blocks are fixedly connected to the inner wall of the frying chamber; a third rotating shaft is arranged in the drying chamber, and the third The bottom end of the rotating shaft extends downward through the processing housing, and the bottom end of the third rotating shaft is fixedly connected to the output shaft of the third motor located on the lower side of the processing housing, and several installation rods are uniformly and fixedly connected to the side wall of the third rotating shaft . The beneficial effect of the present invention is that the tea leaves falling into the disturbance cylinder will slowly fall from the drop hole, thereby realizing the disturbance and mixing of the tea leaves; at the same time, the disturbance rod at the bottom of the vertical rod disturbs the tea leaves at the bottom to make it The heat is even; the dividing device separates the tea leaves on the upper side from the tea leaves on the lower side.
Owner:银川金帮手信息科技有限公司
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