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12410 results about "Vacuum pump" patented technology

A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity.

Multi-stage vacuum extraction control system

The invention relates to the technical field of vacuum extraction control, and discloses a multi-stage vacuum extraction control system which comprises a central processing unit, a multi-stage vacuum pump set control module, a vacuum degree dynamic monitoring module and the like. The multi-stage vacuum pump set control module coordinates all stages of pumps to work according to a preset vacuum degree target value, and the vacuum degree dynamic monitoring module collects pressure data in real time and judges abnormity. The pressure gradient adjusting module adjusts the extraction rate of the adjacent pump to maintain the vacuum gradient stable when the pressure is abnormal, and the abnormity response module controls starting and stopping or rate correction of the pump according to the abnormity level. In addition, the system further has the functions of vacuum pump efficiency evaluation, pressure feedback compensation, leakage detection, redundancy switching, historical data backtracking, collaborative optimization and the like. The system can accurately control the vacuum degree, efficiently deal with abnormities and realize equipment state monitoring and optimization, and is widely applied to the fields with high requirements on the vacuum degree, such as semiconductor manufacturing and vacuum coating.
Owner:WUXI FUWO TECH CO LTD

Oil filter digital intelligent control system based on sensor

The invention relates to the technical field of oil filter control, in particular to an oil filter digital intelligent control system based on sensors, which comprises a fusion monitoring unit, an oil temperature control unit and a feedback regulation unit. The oil temperature control unit calculates the optimal heating rate and the target temperature range through a self-adaptive algorithm according to the environment and the initial temperature of oil, compares the optimal heating rate and the target temperature range with the actual oil temperature in the heating process, adjusts the heating power through pulse heating according to the result, judges the working load according to the specific heat capacity of oil and adjusts the frequency of a vacuum pump. And the feedback regulation unit evaluates the system stability based on the target operation frequency and the heating power of the vacuum pump, generates an optimization strategy and feeds back the optimization strategy to the oil temperature control unit, so that accurate oil temperature control is realized, the equipment stability and the energy utilization efficiency are improved, and efficient operation of the oil filter is guaranteed.
Owner:LUZHOU NANFANG FILTRATION EQUIP CO LTD

Self-adaptive pressure regulation vacuum pump closed-loop control system and method

The invention relates to a self-adaptive pressure regulation vacuum pump closed-loop control system and method. The system comprises a model building module which is used for acquiring real-time data flow of a vacuum pump and building a nonlinear dynamic model to obtain a pressure-flow-power feature mapping relation; the predictive analysis module calculates a pressure-flow predictive value based on the relationship and compares the pressure-flow predictive value with the real-time power data for analysis. And generating a parameter adjustment instruction once the deviation value exceeds a preset threshold value. And the control scheme generation module corrects the control parameters according to the parameter adjustment instruction and generates an optimized power adjustment scheme. And if the data is abnormal, generating a state update value. And the control scheme updating module fuses the state updating value and the pressure-flow prediction value to obtain an optimized model parameter so as to adjust a weight coefficient of an adaptive control strategy and generate a control scheme. The system effectively improves the accuracy of vacuum pump pressure control, greatly enhances the ability of the system to deal with abnormal conditions and equipment performance changes, and ensures long-term stable operation of the vacuum pump.
Owner:QINGDAO QICHENG ENERGY SAVING EQUIP CO LTD

Vacuum preloading soil settlement prediction and control method based on deep learning

The invention discloses a vacuum preloading soil settlement prediction and control method based on deep learning, and aims to realize precise prediction and dynamic closed-loop control of soil settlement. According to the method, an encoder-decoder architecture is adopted to construct a model framework, and off-line generation of a proprietary model is completed through multi-measurement-point space-time joint training and a combinatorial optimization strategy; multi-source data of a target monitoring point is collected and processed to generate a sequence sample of an adaptive model; in order to adapt to the time-varying characteristics of the geological attributes, deploying an incremental online learning mechanism, and solidifying and finely tuning model parameters through an elastic weight; and based on a prediction result of the updated model, a PID control unit calculates a vacuum degree adjusting amount, a vacuum pump control system is driven to dynamically adjust the operation vacuum degree, and it is ensured that soil settlement is within a reasonable range. Finally, a cooperation mechanism of high-precision settlement prediction and dynamic vacuum degree regulation and control is constructed, and the settlement control precision, the response speed and the construction safety are remarkably improved.
Owner:HUAQIAO UNIVERSITY +1

Vacuum pump to generate a negative pressure

A vacuum pump for generating a negative pressure includes a pump housing having a pump chamber with a rotor and a motor for driving the rotor with a drive shaft rotatable about a longitudinal axis, a first and a second inlet line. The second inlet line leads through the pump housing into the pump chamber. A first outlet line leads from the pump chamber through the pump housing. The pump has a first outlet valve and a second outlet line connected to the pump housing. A connecting part is attached to a connecting surface running circumferentially to the longitudinal axis, and the outlet valve with the second outlet line is formed in the connecting part. The connecting part further has the first inlet line, with a first connecting opening formed in the connecting part housing, via which the first inlet line is connected to the second inlet line.
Owner:GEBR BECKER GMBH

Automated Urinary Output Monitoring System

An automated urinary output monitoring system includes a urine collection assembly, a scale, and a pump. The urine collection assembly includes a urinary catheter coupled to a first drainage tube. The interim container coupled to the first drainage tube and a second drainage coupled to a final container. The scale measures the weight of urine collected in the final container and a display can depict the volume of urine collected in the final container. A vacuum pump can be coupled with the final container to draw urine from the interim container into the final container, and an air vent can isolate the patient from the vacuum within the final container. The system can be configured to wirelessly transmit urine volume data to an external computing device. A gyroscope can be coupled with the scale to determine the orientation of the scale.
Owner:CR BARD INC

dehumidifier

The present disclosure relates to a dehumidifier.The dehumidifier according to an embodiment may include a first part in which a fan, a heat exchanger, and a dehumidification module are installed. The first part may define an upper space of the dehumidifier.The dehumidifier may include a second part in which a vacuum pump and at least one tank are installed. The second part may define a lower space of the dehumidifier.The dehumidifier may further include a first partition wall that divides the upper space of the first part and the lower space of the second part into each other.
Owner:LG ELECTRONICS INC

Air flotation vacuum pump performance prediction system based on specific calculation model

The invention discloses an air flotation vacuum pump performance prediction system based on a specific calculation model, and relates to the technical field of mechanical engineering. Comprising a multi-parameter fluctuation sensing module, a weak feature sensitive extraction module, an abnormal coupling atlas construction module, an instability precursor identification module, a prediction model regulation and control module and a model adaptive optimization module, and carrying out fusion in a preset time window, constructing a multi-parameter synchronous fluctuation sensing model, and outputting a synchronous anomaly index. By introducing multi-parameter synchronous fluctuation perception, weak feature extraction and an abnormal coupling map, accurate identification and early warning of the early instability trend of the air floating vacuum pump are realized, and an intelligent system with real-time perception and closed-loop prediction capabilities is constructed by combining model regulation and control and a self-adaptive optimization mechanism, so that the operation safety and stability are improved.
Owner:MECHANICS RES & DESIGN ACAD SICHUAN PROV

Vacuum coffee machine

The invention relates to the technical field of coffee machines. The vacuum coffee machine comprises a container assembly, a sealing structure, a processing structure and a carrier assembly provided with a water source connector. An electric control device, a water pump and a vacuum pump are arranged on the carrier assembly; the treatment structure comprises an integrated container, a blade assembly and a rotary power device; the integrated container is fixed in the carrier assembly and provided with a heating device, a temperature sensor, a rotating shaft hole, a water inlet, an air exhaust hole and a bottom outlet, and the bottom outlet is provided with an outlet valve. The coffee beans are ground, heated and extracted in the only sealed space, and the opportunity that coffee powder is transferred among different units and makes contact with oxygen in air is avoided or reduced, so that the oxidation effect can be minimized, and storage of volatile grease, antioxidants and enzymes in the coffee powder can be maximized.
Owner:耶胡达·阿里克·穆瓦亚尔

Compound multi-compression mechanism vacuum pump with high compression ratio and large pumping speed

The present invention provides a composite multi-compression mechanism vacuum pump with a high compression ratio and high pumping speed. The multi-compression mechanism includes three types: a turbine, a traction wheel, and a vortex blade array. The traction wheel is divided into a first-stage traction wheel and a second-stage traction wheel. A first-stage exhaust port and a second-stage exhaust port are respectively provided on the base, and a valve is provided on the first-stage exhaust port. In the first pumping stage, the valve is opened, and most of the gas flows through the turbine and the first-stage traction wheel and is discharged from the first-stage exhaust port. A small part of the gas flows through the turbine, the first-stage traction wheel, the second-stage traction wheel, and the vortex blade array in sequence and is discharged from the second-stage exhaust port. In the second pumping stage, the valve is closed, and the gas flows through the turbine, the first-stage traction wheel, the second-stage traction wheel, and the vortex blade array and is discharged from the second-stage exhaust port. The present invention solves the problem that high pumping speed and high vacuum cannot be achieved at the same time and that the molecular pump must be equipped with a pre-stage pump by using multiple compression mechanisms in series. The present invention can replace a traditional set of multiple vacuum pumps with a single vacuum pump, significantly reducing costs.
Owner:SHANGHAI CELERY ELECTROMECHANICAL TECHNOLOGY CO LTD

Vacuum pump

A vacuum pump, which is connectable to an external system and configured to evacuate material from the external system, includes a main housing defining a motor housing, a pump housing, and a partition wall that separates the motor housing and the pump housing. The pump housing is sealed relative to the motor housing to form a compression chamber that holds a lubrication fluid. The vacuum pump further includes a motor assembly that is positioned within the motor housing and a pump assembly that is positioned within the compression chamber. The pump assembly is driven by the motor assembly and is in fluid communication with the compression chamber. The pump assembly includes a pump chamber, a rotor having vanes that is driven within the pump chamber, and a seal that is in sliding contact with the rotor. The seal is moveable relative to the rotor.
Owner:MILWAUKEE ELECTRIC TOOL CORP

Forming equipment for ceramic guide rail production and forming method thereof

The invention discloses forming equipment for ceramic guide rail production and a forming method thereof, and relates to the technical field of ceramic guide rail forming, the forming equipment comprises a conveyor, a forming processing box and a raw material box, and the top of the conveyor is provided with the forming processing box. The ultrasonic disperser arranged in the raw material box is combined with the constant-temperature heating sleeve and the viscosity sensor of the conveying pipe, uniform flowing and accurate metering injection of slurry are guaranteed, in the forming stage, the vacuum pump actively pumps out bubbles in a cavity through the micropore array, pores are further eliminated in cooperation with the high-frequency micro-vibration device, the compactness and surface smoothness of the guide rail are greatly improved, and the production efficiency is improved. The cooling runner realizes gradient cooling and curing through closed-loop control of a temperature sensor and a temperature regulator, ceramic cracking deformation is effectively inhibited, the rotary mold assembly supports multi-angle adjustment, nondestructive demolding of a complex structure is facilitated, the production period is shortened, the process stability, energy consumption control and equipment adaptation flexibility are further enhanced, and the production efficiency is improved. And the targets of high precision, low defect and batch production are achieved.
Owner:莎特卡科技(江苏)有限公司 +1

Arc slab manufacturing device and manufacturing process

The invention relates to an arc slab manufacturing device and a manufacturing process. The arc slab manufacturing device comprises a rack, a device body arranged on the rack, a bearing table fixedly arranged in the device body, a mold arranged above the bearing table, a buckle cover arranged on the top of the device body and a plurality of radio frequency heaters arranged on the buckle cover. The fixing frame is arranged between the buckle cover and the device body and is hinged to the device body; the flexible molding film is arranged on the fixed frame and is positioned above the mold; the positioning and fixing mechanism comprises a positioning assembly and a fixing assembly; the positioning assembly is arranged on the die and used for automatically aligning and positioning the plate-shaped profile relative to the center of the die. The fixing assembly is arranged between the mold and the vacuum pump device and used for fixing the aligned and positioned plate-shaped sectional materials. The device has the effects that the plate-shaped profile can be conveniently and stably placed at the arc top of the mold, the positioning accuracy of the placement position of the plate-shaped profile is improved, and the positioning difficulty and the rejection rate are reduced.
Owner:石家庄灿高高频机械有限公司

Full-automatic vacuum oxygen-free oven

The invention provides a full-automatic vacuum oxygen-free oven, belongs to the technical field of wafer processing, and solves the problems that an existing wafer oven is low in feeding, discharging, heating and baking efficiency; and the automation degree is low. The full-automatic vacuum oxygen-free oven comprises an oven frame assembly, an EFEM frame assembly, two vacuum pump assemblies and four wafer loaders which are evenly distributed at equal intervals, four cavity assemblies and four automatic door assemblies are arranged in the oven frame assembly, and a robot transplanting assembly and a machine control box are arranged in the EFEM frame assembly. A main control computer is arranged on the left side of the EFEM frame assembly, the cavity assemblies are connected with the vacuum pump assemblies on the same side through exhaust pipelines, and the cavity assemblies are connected with an external high-purity nitrogen source. According to the invention, through cooperation of multiple sensors, mechanical linkage and a gas-liquid cooling system in the whole process, full-automatic stable grabbing and loading, vacuumizing treatment, heating, constant-temperature process baking treatment, dual-mode cooling and taking treatment of wafers in an oxygen-free and high-precision temperature control environment are realized.
Owner:ANHUI XUTENG MICROELECTRONICS EQUIP CO LTD

Packaging movement assembly for an automatic packaging machine and method thereof

A package movement assembly for an automatic packaging machine comprises a first trolley and a second trolley placed side by side and slidably movable along a packaging direction; a first gripping device and a second gripping device facing each other and between which a package to be moved can be positioned. The first gripping device and the second gripping device are mechanically mounted respectively on the first trolley and on the second trolley, and are movable along a direction substantially parallel to the packaging direction. Furthermore, the first trolley and the second trolley respectively comprise a vacuum pump, associated with the respective gripping device, in fluid connection with said plurality of gripping elements, and an electric motor mechanically connected to the vacuum pump and configured to actuate it.
Owner:PFM

Hydrogen gas detection for aircraft

System and associated methods relate to detecting and responding to hydrogen leakage in an aircraft. The system includes a hydrogen tank and a fuel pipeline surrounded by an enclosed chamber. The system further includes one or more vacuum pumps fluidly coupled to the enclosed chamber to create the control volume vacuum. The system further includes vacuum sensors mounted within the control volume vacuum, configured to sense a vacuum pressure value. The system further includes hydrogen detectors fluidly connected downstream of the one or more vacuum pumps, configured to sense the hydrogen concentration of the exhaust from the one or more vacuum pumps. The system further includes a controller and an emergency vacuum. The controller is configured to evaluate whether an emergency hydrogen leak condition exists based upon the vacuum pressure value and the hydrogen concentration. The controller can then open a valve to operate emergency vacuum if necessary.
Owner:KIDDE TECHNOLOGIES INC

System and method for pulping and sealing carbon dioxide by using coal-based solid waste and mine water

The invention relates to the technical field of mine solid waste treatment and carbon dioxide sealing and storage, and particularly discloses a system and a method for sealing and storing carbon dioxide by utilizing coal-based solid waste and mine water to prepare slurry. The system comprises a cement bin, a gangue bin, a coal ash bin, a gasified slag bin, a mine water storage tank, a stirring reaction kettle, a carbon dioxide storage tank, a slurry temporary storage tank, a vacuum pump and a slurry pump, and the stability and adsorption efficiency of carbon dioxide fixation are improved in the mode that coal-based solid waste, mine water and carbon dioxide are subjected to chemical reaction and physical adsorption; meanwhile, the prepared backfill slurry has high-strength anti-pressure ability, the stability of the backfilled underground goaf is better improved, further, coal-based solid waste and mine water are utilized for waste recycling, and the carbon dioxide storage cost is reduced.
Owner:ORDOS ZHONGYU TAIDE COAL CO LTD +1

Contaminant removal and reduction system

A system for generating methane includes a scrubber, a stripper, a vacuum pump, a water separator, and a Sabatier reactor. The scrubber is configured to absorb one or more contaminants from an air stream into a liquid sorbent, in which the one or more contaminants include carbon dioxide. The stripper is configured to desorb the one or more contaminants from the liquid sorbent. The vacuum pump is configured to pressurize the desorbed contaminants to a reaction pressure of the carbon dioxide. The water separator is configured to remove water from the pressurized, desorbed contaminants. The Sabatier reactor is configured to generate the methane from the carbon dioxide of the pressurized, desorbed contaminants.
Owner:HONEYWELL INTERNATIONAL INC

Negative pressure circulation temperature control system

The invention discloses a negative pressure circulation temperature control system, and relates to the technical field of thermal management. The negative pressure circulation temperature control system comprises a liquid storage tank which is connected with a load end and used for providing a liquid supply medium with a target temperature for the load end; the first vacuum tank is connected with the load end and the liquid storage tank and used for receiving the liquid supply medium of the load end and supplying the liquid supply medium to the liquid storage tank; the second vacuum tank is connected with the load end and the liquid storage tank and is used for receiving the liquid supply medium of the load end and supplying the liquid supply medium to the liquid storage tank; the vacuum pump is connected with the first vacuum tank and the second vacuum tank and is used for alternately constructing a negative pressure environment in the first vacuum tank and the second vacuum tank, so that the first vacuum tank and the second vacuum tank alternately provide a liquid supply medium for the liquid storage tank by utilizing the negative pressure environment; and the temperature control module is connected with the liquid storage tank and used for adjusting the temperature of the liquid supply medium in the liquid storage tank to the target temperature. According to the negative pressure circulation temperature control system, continuous liquid supply to the load end is achieved, it is ensured that the liquid level of the liquid storage tank is stable, and the temperature control efficiency of the negative pressure circulation temperature control system is improved.
Owner:WUXI GUANYA REFRIGERATION TECH

Rotary Vacuum Extraction Device for Food Packaging Equipment

The present invention relates to a food packaging device, and particularly to a rotary vacuum pumping device for a food packaging device. The present invention provides the following technical solutions: A rotary vacuum pumping device for a food packaging device includes a turntable and a vacuum pumping assembly. The vacuum pumping assembly includes a base and a cover body. An opening and closing cover driving mechanism is provided between the turntable and the vacuum pumping assembly. A support frame is provided on the turntable. The cover body is connected to the support frame through a support arm. A closing position tension adjusting member is provided between the support frame and the cover body; the base is hingedly connected to the turntable through a hinge block. The base has a linkage station. The support arm and the linkage station of the base are linked through a connecting rod. One end of the connecting rod extends between the two hinge points of the support arm and is hingedly connected to the support arm, and the other end is at the linkage station and is hingedly connected to the linkage station. By adopting the above technical solutions, a rotary vacuum pumping device for a food packaging device with energy saving, shortened vacuum pumping time, and simple structure is provided.
Owner:ZHE JIANG MING RUI ZHI NENG ZHUANG BEI KE JI GU FEN YOU XIAN GONG SI

Underground coal mine air and water pumping switching electro-hydraulic control system and method

The invention provides an underground coal mine air and water pumping switching electro-hydraulic control system and method, the electro-hydraulic control system comprises an air supply control module, a water supply control module, a negative pressure control module and an oil supply module, and the method adopts a remote control system to control the underground coal mine air and water pumping switching electro-hydraulic control system. According to the underground coal mine air and water pumping switching electro-hydraulic control system, air and water pumping electric control rapid opening and closing and rapid switching of different functions are achieved, the automation degree of air and water pumping switching is improved, and the air and water pumping switching time is shortened; and meanwhile, when dangerous working conditions that gas accumulation exceeds the limit due to hole blocking behind the drill hole or carbon monoxide gas appears in the drill hole and the like, rapid and automatic response processing can be achieved. The air and water pumping conversion efficiency is improved, the labor intensity of workers is relieved, and key technical support is provided for coal mine underground automatic drilling whole-process operation.
Owner:XIAN RES INST OF CHINA COAL TECH & ENG GRP CORP +1

Automatic pole piece waste collecting method for automatic lithium battery winding machine

The invention relates to an automatic pole piece waste collecting method for an automatic lithium battery winding machine in the technical field of information, which comprises the following steps of: arranging a vacuum suction nozzle array below a cutting device, connecting the vacuum suction nozzle array to a central vacuum pump, setting proper vacuum degree and suction time according to material characteristics and sizes of cut waste, and collecting the cut waste by a vacuum pump; the cut waste is automatically sucked and conveyed by controlling starting and stopping of the vacuum pump and the suction force. A flow sensor is installed in a vacuum suction pipeline, the speed and pressure of sucked airflow are monitored in real time, whether the suction process is normal or not is judged according to a preset flow curve, and if the abnormal condition of insufficient suction or airflow turbulence occurs, parameters of a vacuum pump are adjusted in time; the method comprises the steps of collecting and analyzing images of sucked waste materials, recognizing and classifying material types and shape features of the waste materials by adopting a convolutional neural network algorithm, and estimating the quantity and weight of the waste materials in combination with suction time and vacuum degree data so as to provide a basis for subsequent waste material recovery and treatment.
Owner:DONGGUAN HEMING MACHINERY

Membrane tank feasible for cryogenic service

Membrane tank for containment of fluids at temperature that can differ significantly from ambient temperature, for example for containing a cryogenic fluid, wherein the membrane tank comprises, in direction from an inner containment volume: a primary membrane that is fluid tight, facing the contained fluid in operation and functioning as the primary fluid barrier, an insulation layer, surrounding the membrane on the outside, an outer structure, such as a ship hull or bulkhead or other structure, wherein the outer structure supports the insulation layer and primary membrane inside and carries the resulting forces thereby, and at least one opening for loading and unloading of fluid, and an optional secondary membrane if the outer structure is a steel structure becoming brittle at cryogenic temperature, such as a ship hull outer structure, the secondary membrane dividing the insulation layer into an inner insulation between the primary and secondary membranes and an outer insulation between the secondary membrane and the outer structure, wherein the primary membrane comprises areas of flat, curved or double curved shape and a corrugation in between said areas, wherein said areas are fastened to the underlaying insulation and the corrugations are taking up thermally induced strain. The membrane tank is distinguished in that it further comprises a coupling part for connecting a vacuum pump operatively to the whole insulation layer or the inner insulation layer, for enabling vacuum in the whole insulation layer or the inner insulation layer, during loading, containment and unloading of cryogenic fluid.
Owner:LATTICE INT AS

Test device and method for simulating migration and transformation of nitrogen in underground water of river bank undercurrent zone

The invention relates to a test device and method for simulating migration and transformation of nitrogen in underground water of a river bank subsurface zone, and the device comprises a detachable organic glass tank, the internal space of which is divided into a left-end water tank, a middle sand tank and a right-end water tank from left to right in sequence, and the left-end water tank, the middle sand tank and the right-end water tank are respectively used for simulating a river channel, a river bank and a far-bank aquifer; the water level control assembly comprises two constant water head control modules and platform lifting modules corresponding to the two constant water head control modules; the pore water level monitoring assembly comprises a plurality of piezometric tubes, a plurality of transparent graduated scales and a photographing module; the water quality sampling assembly comprises a pore water filtering module embedded in the middle sand tank in an array manner, a vacuum pumping module and a water sample collecting module connected with the pore water filtering module and the vacuum pumping module. Compared with the prior art, the sampling time of the pore water of the fine-particle soil is greatly shortened, and the accuracy of a test result is ensured; automatic control, whole-process monitoring and rapid and automatic sampling of water level fluctuation in the water tank are realized.
Owner:TONGJI UNIV

VPSA hydrogen production device control method and system

The invention discloses a VPSA hydrogen production device control method and system, and relates to the technical field of hydrogen production machines.The method comprises the steps that methyl alcohol is fed into a cracking device and cracked through a catalyst to generate hydrogen-rich gas, the hydrogen-rich gas is fed into a VPSA decarburization device, and the decarburized hydrogen-rich gas is output; introducing into an adsorption bed I to obtain high-purity hydrogen, performing pulse back flushing on an adsorption bed II by using the high-purity hydrogen, and starting a microwave generator and a vacuum pump to perform desorption; after the adsorption bed II completes desorption, switching the direction of the adsorption bed, and performing the same desorption operation on the adsorption bed I to complete regeneration of the adsorption bed I; acquiring equipment operation data in real time by using a sensor, and dynamically adjusting set data; the adsorption bed I and the adsorption bed II alternately operate, and the operation mode is adjusted in real time. By introducing a comprehensive real-time monitoring and dynamic adjusting mechanism and accurately controlling the alternate operation state of the adsorption bed I and the adsorption bed II, efficient regeneration of the adsorption beds and continuous and stable high-purity hydrogen output are realized.
Owner:XINJIANG SHENGJIA ENERGY TECH CO LTD

Vacuum dryer not requiring vacuum pump

A vacuum dryer not requiring a vacuum pump according to an embodiment of the present invention comprises: a drying chamber in which a drying rack is installed, and an exhaust valve communicating with the interior is provided on the outside of the other side; a steam generator located outside the drying chamber, having a water tank, and connected to a steam inlet; and a heat pump interlocked with the inside and outside of the drying chamber and configured by including a condenser provided in a high-temperature area, a first heat exchanger connected to the condenser outside the drying chamber, an evaporator provided in a low-temperature area, a second heat exchanger connected to the evaporator outside the drying chamber, a compressor connecting the first heat exchanger and the second heat exchanger, and an expansion valve connecting the condenser and the evaporator.
Owner:KIM BYOUNG WOO

Vacuum-assisted pultrusion preforming device for composite material

PendingCN120963092ACoatingsYarnVacuum assisted
The invention discloses a vacuum-assisted pultrusion preforming device for a composite material. The vacuum-assisted pultrusion preforming device comprises a yarn threading plate, a gum dipping tank, a gum extruding roller and a vacuum-assisted preforming mold which are sequentially arranged in the pultrusion direction, wherein fiber bundles penetrate through the yarn threading plate in a layered mode, the gum dipping tank is used for containing resin, and the gum extruding roller is used for extruding redundant resin. The vacuum auxiliary preforming mold is provided with a preforming mold cavity, a vacuum cavity is formed in one section of the preforming mold cavity of the vacuum auxiliary preforming mold, an air exhaust hole is formed in the upper portion of the vacuum cavity, and a semi-permeable membrane allowing gas to pass through but blocking resin to pass through is arranged at the air exhaust hole. And the air exhaust hole is externally connected with a vacuumizing device. The vacuum-assisted pultrusion preforming device can effectively discharge microbubbles in resin and fiber bundles, effectively control uniform distribution of the content of the resin and remarkably promote full infiltration of high-viscosity resin to fibers.
Owner:JIANGSU AOSHENG COMPOSITE MATERIALS HI TECH

Long-term vacuum maintenance type Fabry-Perot cavity and preparation method thereof

The invention discloses a long-term vacuum maintenance type Fabry-Perot cavity and a preparation method thereof. An annular gasket is clamped between two reflecting lenses to directly bond in a vacuum environment through Van der Waals force, a vacuum core cavity which is permanently sealed and is vacuum in the air is formed, the vacuum core cavity is fixedly placed in a glass sleeve, and the two ends of the glass sleeve are sealed through an ultraviolet light adhesive bonding interface by adopting optical window pieces. After the interior of the glass sleeve is vacuumized through the exhaust pipe, the glass sleeve is sealed through local heating sintering, and a two-stage vacuum barrier is formed; the Fabry-Perot cavity is long in vacuum holding time and small in size, and does not need to be externally connected with a vacuum pump to maintain vacuum; the device is simple, and the vacuum degree of the Fabry-Perot cavity can be maintained for more than two years under the condition that the processing difficulty is not improved.
Owner:PEKING UNIV

dehumidifier

The present disclosure relates to a dehumidifier.A dehumidifier according to an embodiment of the present disclosure may include a main body including a suction part and a fan; a dehumidification module including a dehumidification member made of polymer membrane fibers to separate moisture from the humid air suctioned from the suction part; a vacuum pump configured to provide driving force to discharge moisture separated from the dehumidification module to an outside of the dehumidification module; a heat exchanger fluidly connected to the vacuum pump and configured to condense the separated moisture; and a drain tank configured to store water condensed in the heat exchanger, in which a first direction of humid air flowing into the dehumidification module and a second direction in which moisture separated within the dehumidification module flows may be perpendicular to each other.
Owner:LG ELECTRONICS INC

Dustproof mechanism and gluing machine thereof

The utility model provides a dustproof mechanism and a gluing machine thereof, and relates to the technical field of gluing machines, the dustproof mechanism comprises a rack, a conveyor belt, a splicing type dustproof cover, a vacuum pump, an air inlet window, a dustproof filter screen, a lifting type shielding piece, a dustproof gluing roller and a feeding dust removal mechanism, the splicing type dustproof cover is used as an external dustproof cover, the dustproof gluing roller is shielded, and the dust removal mechanism is arranged on the dustproof mechanism. To-be-glued raw materials are subjected to wind blowing dust removal through the feeding dust removal mechanism at the feeding end of the conveying belt, the to-be-glued raw materials subjected to dust removal enter the splicing type dust cover from the feeding and discharging gap, the lifting type shielding pieces on the front side and the rear side of the splicing type dust cover descend to shield the feeding and discharging gap, and external dust entering is reduced; and the vacuum pump is started to discharge dust entering the spliced dust cover due to feeding in time, cleaner air is introduced, and the amount of dust adhering to the surfaces of the gluing roller body and the to-be-glued raw materials is greatly reduced.
Owner:JILIN PROVINCE JIGANG NEW MATERIALS SCI & TECH DEV CO LTD