Patents
Literature
31results about How to "Reduce vacuum" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Low-voltage temperature control experiment module for Mars environment simulation test and experiment method
ActiveCN119262352Areduce vacuumFlexible regulationCosmonautic condition simulationsRefrigerationEnvironmental simulation
The invention discloses a low-voltage temperature control experiment module for a Mars environment simulation test and an experiment method, relates to the technical field of ground simulation Mars environment equipment, and solves the problem that the comprehensive simulation capability, especially the temperature aspect, of the ground simulation equipment for the Mars environment is insufficient. An upper cover of the experiment cabin is provided with a refrigeration expansion machine, and an inner cavity of the experiment cabin is connected with a vacuum baffle valve; the inner cavity is communicated with the vacuum baffle valve and the inner cavity body, and the refrigeration expansion machine is connected with the inner cavity body; an outer cavity connecting vacuum baffle valve and an outer cavity air inlet channel arranged on the outer cavity are communicated with the outer cavity, and an inner cavity air inlet channel on the outer cavity is communicated with the inner cavity; a condenser and a heater are arranged on the inner cavity, a copper cold screen is arranged in the inner cavity, and the refrigeration expansion machine, the condenser and the copper cold screen are sequentially connected. The Mars environment ground simulation experiment device can fully simulate the surface temperature, gas environment and pressure environment of Mars, overcomes the defects of the Mars environment ground simulation experiment device, and provides equipment support for the fields of aerospace, Mars detection and the like.
Owner:HARBIN INST OF TECH +1
Method for preparing polyester industrial filament by using recycled polyester chips recycled from bottles and prepared polyester industrial filament
PendingCN119145064AIncrease melt viscosityEasy to degradeSpinning solution de-aeratingFilament forming substance formingPolyesterFiber
The invention belongs to the field of chemical fibers, and particularly relates to a method for preparing polyester industrial filaments by using recycled polyester chips recycled from bottles and the prepared polyester industrial filaments, regenerated PET chips with the viscosity of 0.65-0.8 dl / g and the filtration value of 0-5 MPa are selected, 1.0-1.3 dl / g regenerated high-viscosity chips are obtained after tackifying, and spinning is carried out on an existing industrial filament production line; the temperature of a screw is controlled to be 280-330 DEG C, and the lengths of a feeding section and a metering section are adjusted, so that the slices are fully melted, meanwhile, it is ensured that a large amount of melt is not degraded due to the fact that the melt contains IPA, and the stability of the outlet pressure of the screw is ensured; a spinning assembly adopts a multi-layer metal filter screen structure of 5-30 [mu] m, so that the problem that the spinning assembly is quickly boosted due to many impurities of regenerated slices is solved; and the stretching and setting conditions are optimized and adjusted, so that the physical property, broken filaments and spinnability can meet the requirements.
Owner:ZHEJIANG HAILIDE NEW MATERIAL
GH5605 cobalt-based high-temperature alloy and manufacturing method thereof
PendingCN119553142Areduce vacuumSolve uneven compositionIncreasing energy efficiencyChemical compositionIngot
The invention relates to a GH5605 cobalt-based high-temperature alloy and a manufacturing method thereof, and belongs to the technical field of metal smelting. The GH5605 alloy comprises the following chemical components: 0.05%-0.15% of C, less than or equal to 1.0% of Si, 1.0%-2.0% of Mn, less than or equal to 0.03% of S, less than or equal to 0.03% of P, 19.0%-21.0% of Cr, 9.0%-11.0% of Ni, 14.0%-16.0% of W, less than or equal to 3.0% of Fe and the balance of Co and other inevitable impurities. According to the manufacturing method, the GH5605 electrode bar is smelted through a vacuum induction furnace, refining and argon protection processes are adopted, and it is ensured that the Mn element content of the electrode bar is qualified. And in the vacuum consumable remelting process, argon with the pressure of 2000-3000 Pa is filled, so that the vacuum degree is reduced, Mn element volatilization is effectively inhibited, and section component uniformity is achieved. Detection shows that the Mn content at the edge, the 1 / 2 radius and the central part of the steel ingot meets the technical standard. The process is simple and efficient, the quality of molten steel is not affected, the performance consistency and production stability of the GH5605 steel ingot are remarkably improved, and the process is suitable for the high-end application field.
Owner:JIANGXI BAOSHUNCHANG SPECIAL ALLOY CO LTD
Engine energy-saving device and method for producing hydrogen by utilizing ultrasonic water mist and mineral particles
ActiveCN119532067AIncrease power outputImprove efficiencyElectrical controlNon-fuel substance addition to fuelWater storage tankMineral particles
The invention belongs to the field of automobile engine energy saving, and particularly relates to an engine energy saving device and method for producing hydrogen through ultrasonic water mist and mineral particles, the device comprises a special water storage tank, an ultrasonic water mist generator and micro hydrogen production mineral particles, and the special water storage tank is divided into an ultrasonic water mist generation chamber and a mineral particle hydrogen production chamber through a permeation partition plate; the ultrasonic water mist generator is placed at the position 3 mm-5 mm below the liquid level of the ultrasonic water mist generating chamber, and water is atomized through external power supply. Micro-hydrogen production mineral particles are placed at the bottom of the mineral particle hydrogen production chamber and react with water to generate hydrogen, part of hydrogen is dissolved in water, and part of hydrogen is stored in the gas storage chamber above the liquid level. An air outlet is formed in the top of the special water storage tank and connected with an engine air inlet pipe, water mist and hydrogen enter an air cylinder along with engine suction to participate in acting, and therefore the redundant fuel injection amount is eliminated, and heat transfer loss in the cylinder is reduced. The heat efficiency of the automobile engine is improved, knocking is restrained, the incomplete combustion phenomenon is reduced, and then fuel consumption and harmful gas emission are reduced.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY +1
Preparation method of antireflection film of semiconductor laser
InactiveCN119553226Ashorten process timeincrease temperatureLaser detailsVacuum evaporation coatingPhysical chemistryThin membrane
The invention provides a preparation method of an antireflection film of a semiconductor laser, and belongs to the technical field of semiconductor lasers. The problem that a film layer falls off in an existing anti-reflection film preparation process is solved. Comprising the following steps: pretreatment cleaning before bar coating: vacuumizing a chamber of reaction magnetic control equipment to a vacuum degree of 10 <-6 > Torr grade, turning on a heating lamp to heat the chamber to a set temperature, starting an ion source, introducing a proper amount of plasma gas into the ion source, introducing a proper amount of plasma gas into the chamber to enable the vacuum degree of the chamber to reach a 10 <-3 > Torr grade, and then cleaning; in the process steps of plating the silicon nitride thin film and the aluminum oxide thin film, a chamber is kept at a certain temperature, and then the vacuum degree of the chamber is reduced during film plating; and the performance of the laser is stably improved while the production yield of the semiconductor laser is improved.
Owner:山西创芯光电科技有限公司
A method for recovering materials from metronidazole crude product mother liquor
The present invention relates to the technical field of metronidazole, and specifically discloses a method for recovering materials from a crude metronidazole mother liquor. The present invention first adjusts acid for neutralization, then concentrates and distills water, and adds low-carbon alcohol to remove salt (sodium sulfate), thereby avoiding the "first concentration and then neutralization" treatment mode in which acid adjustment generates salt in the subsequent process, which is mixed into the recovered material, affecting the recovery rate and purity of the material; low-carbon alcohol is added to dissolve organic matter, so as to achieve effective separation of organic matter and sodium sulfate, and the obtained sodium sulfate is of high quality, meets the quality standard of industrial-grade sodium sulfate, can be sold as a by-product or directly used, and reduces the cost of solid waste treatment; carbon disulfide is used to extract the first filtrate for removing low-carbon alcohol, so as to achieve effective separation of 2-methyl-5-nitroimidazole and metronidazole, improve the recovery rate of materials 2-methyl-5-nitroimidazole and metronidazole, solve the use problem of recovered materials, significantly improve economic benefits and environmental benefits, and is suitable for large-scale production.
Owner:河北广祥制药有限公司
Gypsum dehydration system
The utility model provides a gypsum dehydration system, which relates to the technical field of desulfurization wastewater treatment, and comprises a gypsum cyclone, a rapid settling tank and a middle water tank which are sequentially connected through an overflow port, a vacuum belt dehydrator is arranged below the gypsum cyclone and the rapid settling tank, a sand settling nozzle is arranged in the gypsum cyclone, the rapid settling tank is provided with a plurality of mud buckets, and the mud buckets are arranged in the middle water tank. The gypsum cyclone and a bottom discharge port of each mud bucket are connected to the upper side of the vacuum belt dehydrator and are sequentially arranged along the rotating direction of an upper-layer belt of the vacuum belt dehydrator, and the vacuum belt dehydrator is connected with a vacuum pump; the middle water tank is connected with a wastewater cyclone through a water tank delivery pump, and a bottom outlet of the wastewater cyclone is connected with a rapid settling tank; desulfurization slurry discharged from a desulfurization tower is introduced into a gypsum cyclone, and gypsum is distributed on a vacuum belt dehydrator according to the particle size of big end down through step-by-step treatment, and is rapidly dehydrated under the action of a vacuum pump. Gypsum gaps are large in bottom and small in top, blocking is not prone to occurring in the dehydration process, and the dehydration efficiency is improved.
Owner:BEIJING SPC ENVIRONMENT PROTECTION TECH
Microwave ion source high-yield long-life seed tube and use method thereof
PendingCN119485888Aextend your lifeImprove pulse characteristicsNuclear energy generationDirect voltage acceleratorsMechanical engineeringExhaust pipe
The invention discloses a microwave ion source high-yield long-life sub-tube and a use method, and belongs to the technical field of engineering logging. Comprising an accelerating ceramic tube, a discharge chamber is arranged on the upper portion of the accelerating ceramic tube, a microwave head is arranged in the middle of the upper portion of the discharge chamber, an electrode is arranged on one side of the upper portion of the discharge chamber, and an exhaust pipe is arranged on the other side of the upper portion of the discharge chamber; the lower end of the electrode is connected with a storage device which is located in the inner cavity of the discharge chamber. A vacuum adjusting device is arranged on the exhaust pipe; the upper end of the acceleration ceramic tube is connected with the lower end of an extraction electrode, and the extraction electrode is arranged below the discharge chamber; a lead-out ceramic tube is arranged between the discharge chamber and the lead-out electrode; an accelerating electrode is arranged at the bottom of the accelerating ceramic tube; a beam inlet hole is formed in the center of the accelerating electrode; a lead-out hole is formed in the center of the bottom of the discharge chamber; and an acceleration hole is formed in the center of the extraction electrode.
Owner:CHINA NAT PETROLEUM CORP +1
Diaphragm slitting device and diaphragm cutting system
ActiveCN222627992Uprevent proliferationAvoid increasing footprintMetal working apparatusElectrical batteryMechanical engineering
The utility model belongs to the technical field of battery diaphragm processing, and particularly relates to a diaphragm slitting device and a diaphragm cutting system. The diaphragm slitting device comprises a supporting flow guide mechanism, a slitting component and a dust collection mechanism. The supporting flow guide mechanism comprises a supporting part, an adsorption flow guide part and a connecting part; a conveying cavity is formed in the supporting part; a conveying outlet and a conveying inlet are further formed in the supporting part; the conveying outlet and the conveying inlet are respectively communicated with the conveying cavity; the supporting part is communicated with the dust collection mechanism; the adsorption flow guide part is connected to the conveying inlet and communicates with the conveying cavity; the connecting part is connected to the interior of the adsorption flow guide part, and an adsorption hole is formed between the connecting part and the adsorption flow guide part; the slitting component is connected to the side end, away from the supporting component, of the connecting component. The slitting adsorption device can improve the slitting adsorption efficiency and guarantee the cleanliness of equipment.
Owner:DONGGUAN MOFANG NEW ENERGY TECH CO LTD
A novel negative pressure delivery system
The utility model provides a novel negative pressure conveying system, including feed hopper, vacuum feeding machine and negative pressure fan, and feed hopper and vacuum feeding machine are connected through material conveying pipeline between, and vacuum feeding machine and negative pressure fan are connected through gas supply pipeline between, along the direction of conveyance, and the air supplementing valve and the broken empty valve are set gradually on material conveying pipeline. This novel negative pressure conveying system installs the broken empty valve in material conveying pipeline, can effectively reduce the material accumulation in material conveying pipeline in the process of unloading.
Owner:NANJING XIANGRUI INTELLIGENT EQUIP TECH CO LTD +1
A cylinder head lifting device and method for large low speed diesel engines
ActiveCN121913405Bincrease the lengthAchieving Adaptive LevelingLoad-engaging elementsHydraulic cylinderLow speed
The present application relates to the field of mechanical assembly and hoisting, in particular to a cylinder head hoisting device and method for large low-speed diesel engines; the device comprises a main hook, a variable stiffness joint, a lifting tool frame, four double-acting hydraulic cylinders and cross pipelines; the device connects the rodless cavities of the four hydraulic cylinders diagonally through the cross pipelines to build two closed fluid networks; the core is that when the hoisting gravity center deviates, the eccentric load tension forces the hydraulic oil to flow spontaneously between the diagonal hydraulic cylinders, thereby synchronously extending the equivalent sling length of the eccentric weight side and the diagonal side, making the diagonal line as a whole sink to maintain a horizontal posture; the present application discards the complex external leveling mechanism, directly realizes the self-adaptive leveling of the lifting tool frame by using internal fluid physical flow, effectively overcomes the inclination problem caused by eccentric load in traditional hoisting, and provides a stable horizontal posture for cylinder head lowering.
Owner:NINGBO LONGYUAN MARINE POWER EQUIP CO LTD
A method for removing water from a battery by fractional flow vacuuming
ActiveCN119879518Breduce vacuumTake out promptly and continuouslyDrying solid materials without heatFinal product manufactureElectrical batteryProcess engineering
The present application relates to the technical field of electric battery drying, in particular to a battery staged flow type vacuum drying method, compared with the traditional vacuum drying method, the present application can avoid the situation that a large number of water molecules return to the battery during pressure relief in the baking process, and then the overall drying time of the battery is shortened, the drying efficiency of the battery is improved, the amount of drying gas is reduced, and the product quality is improved.
Owner:国兴(东莞)新能源科技有限公司
Multi-stage flash evaporation deamination system and process
ActiveCN119461547AImprove the pumping effectreduce vacuumWater contaminantsTreatment involving filtrationMulti-stage flash distillationWastewater
The invention relates to the technical field of wastewater deamination, in particular to a multi-stage flash evaporation deamination system and process. The multi-stage flash evaporation deamination system comprises a multi-stage flash evaporation deamination tower, the multi-stage flash evaporation deamination tower is connected with a Venturi water ejector through a pipeline, and a condenser is arranged on the pipeline between the multi-stage flash evaporation deamination tower and the Venturi water ejector. According to the invention, wastewater deamination and ammonium sulfate preparation processes can be realized, a plurality of flash steam condensers are additionally arranged on the basis of existing multistage flash heat pump rectification deamination, the condensers can condense flash steam before the flash steam enters the Venturi water jet pump, the jet water quantity required by the Venturi water jet pump is reduced, the power of a circulating pump is reduced, and the energy consumption is reduced. The air exhaust capacity of the Venturi water ejector is improved, so that the flash evaporation capacity of the flash evaporation section is further improved, the deamination effect is improved, and meanwhile, the operation energy consumption in the deamination process can be greatly reduced.
Owner:SHANDONG ZHONGSHENG PRECISION TECHNOLOGY CO LTD
Hydro-optic needle structure
ActiveCN222605220Uincrease vacuumreduce vacuumInfusion syringesMedical devicesMechanical engineeringPhysics
Owner:CHONGQING XINGCHEN PLASTIC SURGERY HOSPITAL CO LTD
Treatment system and method for acid mist and distillate water generated by acid concentration and evaporation
PendingCN119258566Aprevent leakagereduce vacuumSulfur compoundsDispersed particle separationChemical industryAcid concentration
The invention discloses a treatment system and method for acid mist and distillate water generated by acid concentration and evaporation, and belongs to the technical field of green chemical industry. The method comprises the following steps: carrying out reduced pressure distillation on dilute acid in an acid concentration kettle, forming fraction water from fraction through a condenser, and feeding the fraction water into an alkalization kettle; uncondensed acid mist is pumped into the water tank through the water-ring vacuum pump; liquid alkali is added into the alkalization kettle and pumped into a water tank through a centrifugal pump, acid mist is retained in the water tank and absorbed by dilute alkali liquor, when a water phase in the water tank overflows into the alkalization kettle and high-concentration acid is completely discharged, dilute acid continues to be fed into an acid concentration kettle, the content of sodium sulfate and alkali in liquid in the alkalization kettle is detected regularly in the continuous concentration process, and the liquid alkali is added regularly; liquid in the alkalization kettle is discharged from the bottom of the kettle. The whole set of process for treating distilled water and acid mist generated in the acid concentration process realizes cyclic utilization and continuous treatment, conforms to the concept of green sustainable development, is good in acid concentration effect and sufficient in tail gas emission and absorption, and does not cause environmental pollution.
Owner:CHINASUN SPECIALTY PROD (BINJIANG CHANGSHU) CO LTD
Transmission type X-ray tube
PendingCN119153291Aavoid arcingavoid damageHollow article cleaningModifications by conduction heat transferMechanical engineeringPhysics
The invention relates to the technical field of X-ray tubes, in particular to a transmission-type X-ray tube which comprises a vacuum tube and a cleaning mechanism. The cleaning mechanism comprises a driving assembly and a cleaning assembly, the cleaning assembly is arranged in the vacuum tube and attached to the inner wall of the vacuum tube, the driving assembly is arranged on the vacuum tube and connected with the cleaning assembly, and the driving assembly is used for driving the cleaning assembly to move in the vacuum tube. And the cleaning assembly is used for cleaning the inner wall of the vacuum tube. The X-ray tube has the effect of reducing the possibility of damage to the X-ray tube.
Owner:SHANGHAI KEYWAY ELECTRON CO LTD
Magnesium smelting device based on microwave heating
The invention relates to the technical field of magnesium smelting equipment, in particular to a magnesium smelting device based on microwave heating, which comprises a support frame divided into an upper layer and a lower layer, and further comprises a closed hood fixed on the support frame through a support rod; the multiple reduction assemblies are of the same structure and are installed in the closed cover in a penetrating mode, under the assistance of the reduction assemblies, high-purity alumina fibers are matched for isolating microwaves, the path of the microwaves in the device is limited, it is ensured that heat is efficiently utilized, and the magnesium output efficiency is improved; joints among parts, possibly affected by microwaves, of the device are sealed by high-temperature-resistant isolation materials, so that the microwaves are prevented from leaking, and meanwhile, a positive effect is maintained for a vacuum environment in the device; according to the device, multiple groups of microwave generators are matched with the silicon nitride furnace tubes, and the reduction assembly is combined, so that more raw materials can be smelted at a time, and the production efficiency is ensured.
Owner:HUNAN ZHONGSHENG THERMAL ENERGY TECH CO LTD
Device and method for preparing nicotine by recycling tobacco waste
PendingCN119570509ASimple processIncrease productivityOrganic chemistryDistillation regulation/controlEnvironmental engineeringNicotine
The invention belongs to the technical field of tobacco production, and particularly relates to a device and method for preparing nicotine by reusing tobacco waste, and the device comprises a pyrolysis device, a pyrolysis gas condensing device, a rectification device and a rectification condensing device which are sequentially communicated through pipelines; the pyrolysis device is used for pyrolyzing the tobacco waste to release pyrolysis gas containing nicotine; the pyrolysis gas condensing device is used for separating condensed pyrolysis gas and non-cold condensed pyrolysis gas; the rectification device is used for separating nicotine in the condensable pyrolysis gas; and the rectification condensing device is used for condensing the nicotine in the steam state into liquid nicotine. According to the device and the method, the tobacco waste can be recycled to produce nicotine under the condition that strong acid and strong alkali are not used, and the preparation process is simple, low in energy consumption and environmentally friendly.
Owner:HONGTA TOBACCO (GROUP) CO LTD
Slurry impurity removal device of belt conveyor
ActiveCN224252280UGood water permeabilityless waterFiltration circuitsMoving filtering element filtersDrive wheelSlurry
The utility model relates to the technical field of desulfurization and impurity removal, in particular to a slurry impurity removal device of a belt conveyor. The slurry impurity removing device of the belt conveyor comprises a driving wheel, a filtering conveying belt is arranged on the driving wheel, a discharging port is formed in the filtering conveying belt, a discharging outlet is formed in one side of the driving wheel, and a first-stage rotary washing wheel and a second-stage rotary washing wheel are arranged between the discharging port and the discharging outlet. A loosening rake is arranged between the first-stage rotary washing wheel and the second-stage rotary washing wheel, a first-stage supporting frame is arranged below the first-stage rotary washing wheel, a first-stage scraping plate is arranged on the first-stage supporting frame, a first-stage impurity removing canvas is arranged on the first-stage scraping plate, and the first-stage impurity removing canvas is in contact with the filtering conveying belt. According to the device, through the arrangement of the loosening rake, black substances attached to the interior or the bottom of gypsum are also exposed, and the impurity removal efficiency is greatly improved; and through the arrangement of a scraping plate, the working efficiency of the impurity removal canvas is improved.
Owner:ZHOUPING HONGZHENG NEW MATERIAL TECH CO LTD +1
Secondary concentration device for dipotassium glycyrrhizinate
ActiveCN222585552Ugood removal effectpromote tumblingEnvironmental engineeringDipotassium Glycyrrhizate
The utility model relates to the technical field of dipotassium glycyrrhizinate production, in particular to a secondary concentration device for dipotassium glycyrrhizinate. The secondary concentration device for dipotassium glycyrrhizinate is used for concentrating a primary concentrated material of dipotassium glycyrrhizinate, and comprises a concentration kettle for performing secondary concentration treatment on the primary concentrated material and forming gas-phase ethanol; a gas phase outlet of the concentration kettle is connected with a feeding hole of the condenser; a discharge port of the condenser is connected with a feed port of the ethanol collecting tank, and the ethanol collecting tank is connected with a vacuum pump. According to the utility model, the concentration kettle is vacuumized, so that a small amount of ethanol in a primary concentrated material can be removed, and the influence of ethanol residue on the production process after dipotassium glycyrrhizinate is reduced; the bottom of the concentration kettle is connected with the first breather valve, so that sterile gas can be input into the concentration kettle, the input of the sterile gas is beneficial to rolling of materials in the concentration kettle, and the secondary concentration efficiency is improved.
Owner:XINJIANG TIANSHAN PHARM IND CO LTD
A gas extraction device
The utility model discloses a kind of gas extraction device, including base shell, extraction module, pressure sensor, switch module, current detection module, control module and control module, pressure sensor is used to detect the pressure value of container cavity when being powered, the input end of switch module is used to connect with power supply, the output end of switch module is connected with the power end of pressure sensor, the sampling end of current detection module is connected with pump body assembly to detect the working current value of pump body assembly, control module is connected with control module, the output end of pressure sensor, the output end of current detection module, the controlled end of switch module and pump body assembly respectively, act on control module can make control module switch at least between first working state and second working state, wherein, in first working state, control module controls switch module to turn on, in second working state, control module controls switch module to turn off, and the design control is reasonable and stable, convenient and reliable to use.
Owner:ZHONGSHAN TLC ELECTRONICS TECHNOLOGY CO LTD
High-efficiency heat exchange assembly for air cooling island
ActiveCN222438573UReduce the temperaturereduce vacuumSteam/vapor condensersCirculator pumpEnergy consumption
The utility model relates to the technical field of air cooling island improvement, in particular to an air cooling island high-efficiency heat exchange assembly which comprises a communicating groove, a hole is formed in the top of the front face of the communicating groove and communicated with an air inlet groove, and a hole is formed in the bottom of the back face of the communicating groove and communicated with an air outlet groove. Reserved holes are formed in the middle of the front face of the communicating groove in a rectangular array mode. The spraying device is embedded and mounted in the preformed hole; wherein the bottom of the spraying device is communicated with a circulating pump body. The utility model solves the problems that the unit vacuum is continuously high when all the fans of the air cooling island are in a full-high-speed operation state, the unit vacuum can be quickly increased if one fan fails, the unit shutdown risk is high, and the unit energy consumption is increased in the period of time due to high vacuum.
Owner:SHAANXI BAOSTEEL GAS CO LTD
A vacuum degree regulating valve
This application provides a vacuum regulating valve, installed on an external vacuum mechanism, comprising: a valve core with a cover connected to one end; an adjusting member sleeved on the valve core; the adjusting member being movable on the valve core and connected to the other end of an elastic member; an elastic member sleeved on the valve core, with its two ends connected to the cover and the adjusting member respectively; a valve seat disposed at the end of the adjusting member away from the elastic member, the elastic member having elasticity and capable of pressing the cover onto the valve seat, thereby sealing the cover and the valve seat; and a valve housing, wherein the inner wall of the valve seat and the outer wall of the adjusting member are both sealed to the inner wall of the valve housing, and the cover and the valve core are both located inside the valve housing; when there is a gap between the valve seat and the cover, the external vacuum mechanism communicates with the outside. This application improves the stability of the external vacuum mechanism.
Owner:CHONGQING CHINA TOBACCO IND CO LTD
Natural rubber drying process and device with pretreatment function
ActiveCN119492249AImprove high temperature resistanceNot easy to stickDrying gas arrangementsDrying machines with progressive movementsThermodynamicsParking space
The invention discloses a natural rubber drying process and device with a pretreatment function, and belongs to the technical field of rubber drying. Granulated natural rubber particles are conveyed to a rubber vehicle by using water containing an anti-sticking agent, the rubber loaded into the vehicle is preheated and then enters a high-temperature and high-humidity environment of a closed section, and a water migration inner channel is opened; and then entering a continuous drying section for partitioned variable-temperature-humidity drying, and finally getting out of a vehicle after reaching the standard. The device comprises a tunnel type hot air drying cabinet provided with a plurality of glue vehicle parking spaces, the parking space at the foremost end of a tunnel is a preheating section, a sealing section is arranged behind the preheating section, all the parking spaces behind the preheating section are continuous drying sections, an upper air flue and a lower air flue are arranged on the upper portions and the lower portions of the parking spaces in the tunnel respectively, and partitions are arranged on the air flues every part of the parking spaces. An air inlet and an air outlet are alternately formed in the air duct between every two adjacent partitions; bonding among rubber particles during high-temperature drying can be overcome, the high-temperature tolerance of rubber is improved, the drying rate in the speed reduction stage is increased, generation points are reduced, and the energy utilization rate of a drying system is increased.
Owner:YUNNAN LIANGONG TECHNOLOGY CO LTD
Bottom-valve-free automatic vacuum siphon drainage device of self-priming pump
ActiveCN222376726UImprove work efficiencySimple structurePump componentsPriming pumpSiphonEnvironmental engineering
The utility model discloses a bottom-valve-free automatic vacuum siphon drainage device of a self-priming pump, and belongs to the technical field of self-priming pumps. Comprising a water tank, and a water suction pipeline extending into a sedimentation tank is communicated with the upper position of the outer side of the water tank; the lower position of the outer side of the water tank communicates with the inlet end of the self-priming pump. The liquid level meter is arranged in the sedimentation tank; the flow meter is arranged at the outlet end of the self-priming pump; and the liquid level meter and the flow meter are in communication connection with a DCS cabinet. The device is simple and reliable in overall structure, low in cost and low in maintenance requirement; moreover, the working efficiency of the water pump is improved, the power consumption is reduced, and the occurrence of faults and the later operation cost are reduced; impurities are prevented from entering the self-priming pump, the overall high availability is guaranteed, and the maintenance requirements are further reduced; pipeline resistance can be reduced, and energy consumption of the water pump is reduced.
Owner:HENAN ZHONGHONG GRP COAL
Thermal adaptation coefficient measuring device, thermal adaptation coefficient measuring and calculating method and thermal resistance calculating method
PendingCN119666919Ameet the testincrease vacuumMaterial heat developmentSupporting systemMeasurement test
The invention discloses a thermal adaptation coefficient measuring device, a measuring and calculating method and a thermal resistance calculating method. The device comprises an upper heat flow meter, a lower heat flow meter, a contact type displacement sensor, a heating assembly, a cold end circulation assembly, a supporting system, a pipeline assembly interface and a control system, wherein the upper heat flow meter and the lower heat flow meter are arranged in a vacuum cover; the control system is arranged outside the vacuum cover; the heating assembly and the cold end circulation assembly are respectively connected with a heat flow meter which is symmetrically arranged, and the end part of each heat flow meter is provided with a measurement test piece; the heat flow meter and the measurement test piece are connected with thermocouples; the contact type displacement sensor is arranged at the peripheries of the heat flow meter, the measurement test piece and the thermocouple; an external control system is connected to the interior of the vacuum cover through the pipeline assembly connector. The temperatures on the upper and lower heat flow meters and the test piece are accurately measured, the heat flow passing through the test piece and the heat flow meters is determined, the intermediate quantity is calculated through the temperatures on the test piece and the heat flow meters, and finally the thermal adaptation coefficient and the contact thermal resistance of the accurate calculation result are obtained.
Owner:GUILIN UNIV OF ELECTRONIC TECH
A robot flexible arm structure and control method thereof
ActiveCN119304925Bincrease stiffnessreduce stiffnessProgramme-controlled manipulatorArmsElbow blockControl valves
The present invention discloses a robot flexible arm structure and a control method thereof, including an air circuit control component and two flexible arm units, the two flexible arm units are connected by an elbow joint component, one end of one of the flexible arm units is connected to a shoulder joint component; the flexible arm unit includes an inner airbag and an outer airbag arranged outside the inner airbag, and end load-bearing members are respectively arranged at both ends of the inner airbag; a first cavity is arranged inside the inner airbag, and a second cavity is arranged between the outer airbag and the inner airbag; the first cavity is filled with particles; the air circuit control component includes an exhaust device, an inflation device, a sensor device, a control unit, and a negative pressure control valve, a gas transfer pipeline is arranged between the first cavity and the second cavity, and the negative pressure control valve and the sensor device are both arranged on the gas transfer pipeline. In the present invention, by adjusting the vacuum degree in the inner airbag, the rigidity of the flexible arm unit can be adjusted, thereby meeting the use requirements in different environments.
Owner:WESTLAKE INTERACTIVE ROBOT TECHNOLOGY (HANGZHOU) CO LTD
A method, system, equipment, and medium for slag control based on image recognition
ActiveCN115469695BSlow down the rate of overflowprevent overflowFluid pressure control using electric means
This invention discloses a slag control method, system, device, and medium based on image recognition. It includes acquiring slag-turning features using image recognition; quantifying the slag-turning risk level based on the slag-raising rate; establishing a pressure relief valve opening and closing mechanism based on the slag-turning risk level; and controlling the pressure relief valve to automatically adjust according to the opening and closing mechanism until a preset slag-turning state is identified. This solves the technical problem in existing technologies where steel slag overflows from the ladle cover, damaging related vacuum equipment. It achieves the technical effect of adjusting the gas overflow rate from the slag and the exhaust rate to a balance point, thus preventing steel slag from overflowing from the ladle cover.
Owner:BEIJING SHOUGANG AUTOMATION INFORMATION TECH
Floor brush and cleaning device
ActiveCN224320626UStir welleasy to cleanMachine detailsSuction nozzlesStructural engineeringMechanical engineering
The utility model relates to a floor brush and cleaning equipment, floor brush includes floor brush main part, at least one roll brush group and connecting structure, floor brush main part is equipped with the suction cavity with opening, same roll brush group includes at least two roll brushes, the roll brush can rotate around the central axis, the adjacent two roll brushes of same roll brush group are connected through connecting structure, make the included angle angle between the two roll brushes of being connected variable in the nonparallel horizontal plane preset plane. The adjacent two roll brushes of same roll brush group are connected through connecting structure, make the included angle angle of the two roll brushes each other variable, can improve the cleaning effect of floor brush on the non-flat surface.
Owner:DREAME TECHNOLOGY (SUZHOU) COLTD
Continuous production system and production method of modified polyester
PendingCN119406363AReduce energy consumptionimprove performanceCombination devicesChemical industryPolyesterProcess engineering
The invention relates to a continuous production system and a production method of modified polyester. The system comprises a melting device (1), a static reactor (2), a first mixing modification device (3), a static devolatilization device (4) and a second mixing modification device (5) which are communicated in sequence, the melting device (1) is provided with a cyclic ester monomer feed port, the first mixing and modifying device (3) is provided with a first modifier feed port, the static devolatilization device (4) is provided with a gas outlet, and the second mixing and modifying device (5) is provided with a second modifier feed port and a modified polyester discharge port; the system further comprises a vacuum circulation device (6), the vacuum circulation device (6) comprises a spraying condenser and a vacuumizing assembly connected with the spraying condenser, and the spraying condenser is communicated with an air outlet of the static devolatilization device (4). Compared with the prior art, the method has the advantages of low energy consumption, capability of preventing the polymer from being influenced by shear heat in the preparation process and the like.
Owner:SHANGHAI PUJING CHEM NEW MATERIALS