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Cooking utensil
Owner:FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
Switching-controllable THz wave metamaterial perfect absorber and control method thereof
InactiveCN103247839AMature processing technologyEasy to prepareWaveguide type devicesOptical elementsVanadium dioxidePhase change
The invention relates to the field of metamaterial devices and provides a switching-controllable THz wave metamaterial perfect absorber (MPA) and a control method thereof. The switching-controllable THz wave metamaterial perfect absorber comprises a substrate, an MIT (metal-insulator transition) layer positioned on the substrate, a dielectric layer positioned on the MIT phase change layer and metal opening resonance units positioned on the dielectric layer and being in cyclic arrangement, and the on / off of the absorber at the resonance frequencies of the metal opening resonance units is realized through changing the conductivity of the MIT phase change layer. According to the invention, the variation of the conductivities of the MIT phase-change material before and after phase change is utilized to change the absorptivity of the absorber, so that the THz MPA can be turned on / off near the resonance frequency of the metal opening resonance units, initiative control of the electromagnetic transfer characteristics of THz wave bands at the specific frequency, and accordingly, a larger on-off ratio or modulation depth can be obtained; and the switching-controllable MPA adopting the substrate-vanadium dioxide-dielectric layer-SRRs (Split Ring Resonators) four-layer structure can control the conductivity of vanadium dioxide through an external field so as to control the absorptivity of the MPA.
Owner:HUAZHONG UNIV OF SCI & TECH
MEMS gas sensor and manufacturing method thereof
ActiveCN104181203AAvoid failureInhibit sheddingDecorative surface effectsSolid-state devicesInsulation layerSilicon dioxide
The invention relates to the technical field of gas detection, and in particular relates to an MEMS gas sensor. The MEMS gas sensor comprises a monocrystalline silicon substrate, a porous silicon layer which is formed on the upper surface of the monocrystalline silicon substrate and has thickness downwards, a heat insulation trough formed on the lower surface of the monocrystalline silicon substrate in an inverse manner, a lower insulation layer, a heating layer, an upper insulation layer and a gas sensitive layer, wherein the bottom surface of the heat insulation trough is positioned just under the porous silicon layer; the heat insulation trough comprises one or multiple trench groups; the lower insulation layer covers the porous silicon layer and the upper surface of the monocrystalline silicon substrate and comprises a first silicon dioxide layer, a second silicon dioxide layer and a silicon nitride layer from bottom to top in sequence; the heating layer, the upper insulation layer and the gas sensitive layer are arranged above the lower insulation layer. The invention also correspondingly discloses a manufacturing method of the MEMS gas sensor. By virtue of the structures of porous silicon and the heat insulation trough, the heat insulation effect is enhanced; the lower insulation layer effectively prevents the heat insulation layer warping to break away from the heating layer at high temperature; meanwhile, under the supporting of the porous silicon layer, deformation and cracks, which are caused by non-uniform stress, of the lower insulation layer are prevented, and thus the service life of the gas sensor is prolonged.
Owner:SUZHOU LEANSTAR ELECTRONICS TECH
Modular spatial curved surface folding and unfolding antenna mechanism based on rib mechanisms
ActiveCN104022337ARealize modular expansionRealize modular productionCollapsable antennas meansComputer moduleSatellite
The invention relates to an antenna mechanism, in particular to a modular spatial curved surface folding and unfolding antenna mechanism based on rib mechanisms. The modular spatial curved surface folding and unfolding antenna mechanism aims to solve the problems that an existing unfolding-type parabolic cylinder antenna structure is low in molded surface precision, poor in stability and low in integral rigidity, an umbrella-shaped antenna structure is not suitable for reflecting surface stretch forming, and a truss antenna structure capable of being unfolded only can be unfolded unidirectionally but a parabolic cylinder can not be formed. The modular spatial curved surface folding and unfolding antenna mechanism comprises two speed-controlled motors, two longitudinal connection rib mechanisms, two folding and unfolding connection mechanisms, a plurality of transverse connection rib mechanisms, a plurality of single rib mechanisms, a plurality of single modular folding and unfolding mechanisms, a plurality of tensioning pull ropes and a plurality of modular connection mechanisms. Two transverse outer side supporting frames are arranged between the two longitudinal connection rib mechanisms in parallel and are respectively formed by connecting multiple transverse connection ribs in series, and the two folding and unfolding connection mechanisms, the single modular folding and unfolding mechanisms and the single rib mechanisms are arranged in the supporting frames. The modular spatial curved surface folding and unfolding antenna mechanism is applied to satellites, space stations and space probes.
Owner:HARBIN INST OF TECH
Elastic hinge driving truss type foldable unit and foldable supporting arm
ActiveCN104260900AOvercome entanglementIncrease stiffnessCosmonautic vehiclesCosmonautic partsEngineeringSatellite
The invention relates to truss type foldable units and foldable supporting arms formed by the same and particularly to an elastic hinge driving truss type foldable unit and a foldable supporting arm. The elastic hinge driving truss type foldable unit and the foldable supporting arm aim at solving the problems that the existing hinged supporting arm is complicated in driving mechanism, large in folding size and low in repeated unfolding accuracy and accordingly the structural weight is greatly increased and the unfolding reliability is low. The elastic hinge driving truss type foldable unit comprises an upper frame, a lower frame, N elastic hinge type folding arms and N groups of drawing cable assemblies; the upper frame and the lower frame are arranged in a parallel mode; N vertexes of the upper frame and N vertexes of the lower frame are arranged in an upper and lower corresponding mode; every two corresponding vertex angles formed between the upper frame and the lower frame are supported through the corresponding elastic hinge type folding arm and can be connected with each other in a rotating mode; every group of drawing cable assembly is arranged at the diagonal position in a rectangular plane which is formed by the upper frame, the lower frame and the two corresponding adjacent elastic hinge type folding arms. The elastic hinge driving truss type foldable unit and the foldable supporting arm are applied to a satellite, a space station and a space probe.
Owner:HARBIN INST OF TECH
Transparent broadband metamaterial absorber
InactiveCN106252897ASimple structureMature processing technologyAntennasOptical transmittanceConductive materials
The invention discloses a transparent broadband metamaterial absorber which comprises multiple periodically arranged unit structures. Each of the unit structures comprises an upper layer transparent resonant structure at the center of the unit structure, a middle layer transparent substrate, and a lower layer transparent reflection layer. The upper layer transparent resonant structure is above the middle transparent substrate, and the lower layer transparent reflection layer is under the middle layer transparent substrate. The upper layer transparent resonant structure is a symmetric figure which comprises a ring and a ring with a branch at the periphery of the ring. Both the upper layer transparent resonant structure and the lower layer transparent reflection layer are transparent conductive materials. According to the transparent broadband metamaterial absorber, the reflection rate of incident electromagnetic wave can be effectively attenuated in an X band, the transparent broadband metamaterial absorber is convenient to manufacture, the technology is mature, the light transmittance performance of the overall structure is excellent and a light transmittance rate is larger than or equal to 80% in a visible light range, and the transparent broadband metamaterial absorber has a good prospect in application.
Owner:JIANGSU SAIBO DEFENSE TECH CO LTD
Low section compact dual-band dual-polarization common aperture microstrip antenna
InactiveCN103606745AMature processing technologyEnsure consistencyAntenna earthingsPolarised antenna unit combinationsGround plateKu band
The invention provides a low section compact dual-band dual-polarization common aperture microstrip antenna which is formed by two layers of double-face copper clad microwave dielectric plates. The needed double-frequency antenna array and Ku band antenna feed network are formed on the upper surface of the upper layer dielectric plate through etching process, and an L type coupling slot is arranged on a grounded plate at the lower surface of the upper layer dielectric plate. A Ka band antenna feed network is at the lower layer of the lower layer dielectric plate, and the antenna is subjected to coupled feeding through the slot. Two frequencies of the antenna coverage are a Ka band and a Ku band. According to the antenna, through the reasonable array layout, a Ka band antenna and a Ku band antenna are in coplanar nested placement in a same aperture, the structure is compact, the feed network of the antenna is hierarchically designed, and the wiring space is relatively abundant. The antenna can be applied to a satellite communication terminal of Ku and Ka bands.
Owner:SPACE STAR TECH CO LTD
Low-power consumption double module integrated humidity sensitive chip with heating function and its manufacture method
InactiveCN101308110AReduce rainSmall sizeDecorative surface effectsSemiconductor/solid-state device manufacturingThermal isolationCapacitance
Disclosed is a dual module integrated humidity sensitive chip with heating function and low power consumption as well as a making method thereof, relating to a sensor chip and a making method. The chip and method improve the applicability to environment with fast changing of temperature and humidity of a humidity sensor having the integrated heating function and reduce the power consumption when heating, and the invention provides the dual module integrated humidity sensitive chip with heating function and low power consumption as well as the making method by adopting a mono-crystalline silicon material as a substrate and combining the semiconductor technique and the micro-machining technique. Two humidity sensor modules having the same structure are symmetrically arranged at both sides of a thermal isolation through groove on a symmetric axis of the sensor structured substrate, the bottom parts of the humidity sensor modules are provided with a heating resistor on which a humidity sensitive capacitor is arranged, and the two ends of the heating resistor, and a porous capacitance upper polar plate and a capacitance lower polar plate of the humidity sensitive capacitor are respectively led out by an electrode. The sensor chip of the invention has advantages of good reliability and stability, small volume, low cost and convenient processing in batches, and can be applied to the making of various humidity sensors.
Owner:NO 49 INST CHINESE ELECTRONICS SCI & TECH GRP
Method for treating specific pollutants through high-temperature melting technology
InactiveCN105344698AReduce operating costsResourcefulSolid waste disposalTransportation and packagingSludgeSlag
The invention provides a method for treating specific pollutants through a high-temperature melting technology. The specific pollutants comprise electroplating sludge, sludge containing metal and / or incineration disposal residues. The method comprises the steps that pretreatment is carried out, wherein the specific pollutants are pretreated, the water content of the specific pollutants is reduced to be 10 wt% or lower, and dry specific pollutant materials are obtained; burdening, blending and granulating are carried out, wherein regulating components are added as needed, mixed and granulated, and a granulated mixture is obtained; melting is carried out, wherein the granulated mixture is melted at the melting temperature ranging from 1,200 DEG C to 1,800 DEG C; and products are obtained, wherein the melted metal is settled on the lower layer and is discharged to obtain a metal alloy, and slag and a small part of metal float above the melted metal and are discharged to obtain glassy-state slag. After the specific pollutants are treated through the method, harmless and pollution-free resource materials can be obtained, and the method can be used for resource recycling, and is good in economic benefit and beneficial to commercial popularization.
Owner:SHANGHAI LVCHENG ENVIRONMENTAL PROTECTION TECH
Telescopic truss type binary optical space camera and on-orbit work method thereof
The invention provides a telescopic truss type binary optical space camera and an on-orbit work method thereof and belongs to the field of spaceflight space repeatable unfolding. The telescopic truss type binary optical space camera aims to solve the problems that an existing space foldable and spreadable framework type supporting arm is complicated in structure, heavy and difficult to repeatedly fold and unfold. A partitioned type spreadable optical main lens of the telescopic truss type binary optical space camera is installed on a supporting arm through three ball hinges. The supporting arm comprises multiple framework type foldable units. The on-orbit work method comprises the steps that during launching, the supporting arm and the partitioned type spreadable optical main lens are in a folded mode, and the optical camera is in a launch closed mode; after injection, the supporting arm is switched to a unfolding mode and is unfolded; after the supporting arm is unfolded appropriately, the space camera is switched to an on-orbit operation mode, and the partitioned type spreadable optical main lens is unfolded; when the space camera is switched to an on-orbit closed mode, the supporting arm is folded, and the partitioned type spreadable optical main lens is unfolded. The telescopic truss type binary optical space camera is a large-caliber space camera.
Owner:HARBIN INST OF TECH
Method for preparing nano-porous structure based on nano-particle self-assembly and application thereof
ActiveCN104101630AMature processing technologyGood repeatabilityRaman scatteringNanosensorsNanoparticleCapillary Tubing
The invention relates to a method for preparing a nano-porous structure based on nano-particle self-assembly. Particularly, a capillary tube serves as a support body, and relying on the support body, nano-particles are self-assembled at the pointed end of the capillary tube through a cross-linking agent to form the nano-porous structure. The method for preparing the nano-porous structure is simple and low in cost, has the advantages that the nano aperture is adjustable in size, is convenient to move and position, and has an extensive application range.
Owner:NANJING UNIV
Infrared transmission microwave broadband metamaterial absorber
An infrared transmission microwave broadband metamaterial absorber comprises multiple periodically arranged structural units, wherein each structural unit comprises an upper metal resonant layer, a first layer of dielectric substrate, an intermediate metal resonant layer, a second layer of dielectric substrate and a lower metal mesh layer; the upper metal resonant layer is plated on an upper surface of the first layer of dielectric substrate, the intermediate metal resonant layer is plated on a lower surface of the first layer of dielectric substrate, and the lower metal mesh layer is plated on a lower surface of the second layer of dielectric substrate; and the first layer of dielectric substrate is connected to the second layer of dielectric substrate. The infrared transmission microwavebroadband metamaterial absorber disclosed by the invention can realize absorption and shielding effects on incident electromagnetic waves in 5-20GHz commonly-used microwave radar bands, has an absorption rate of more than 80%, ensures that the electromagnetic waves in an infrared band are permeable, and has very high application prospects in an electromagnetic shielding optical window.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Pure-cotton-gauze based sterile dustproof mask and producing method thereof
InactiveCN103445328AImprove breathabilityGuaranteed AffinityProtective garmentSpecial outerwear garmentsCotton gauzeRespirator
The invention relates to a pure-cotton-gauze based sterile dustproof mask and a producing method thereof. A mask body consists of the pure cotton gauze, a PLA (poly lactic acid) electrostatic spinning nano-fiber film, ramie needle-punched nonwoven fabric and PLA melt-blown nonwoven fabric which are laminated sequentially from inside to outside in an ultrasonic bonding manner, wherein the pure cotton gauze is of one or two layers. The producing method includes production of 2.5g / m<2> PLA electrostatic spinning nano-fiber film and production of ramie needle-punched nonwoven fabric. The mask of the layer structure has the characteristic of guiding water from inside to outside in one way, dryness and comfort of the inside of the mask can be kept, and bacterium breeding is prevented. Therefore, the mask is sterile, capable of filtering dust effectively, and has the advantages of low production, good breathability and capability of being biodegraded completely.
Owner:TIANJIN TEDA JINSHAN PACKING MFR
Semiconductor processing device and gas spray head cooling plate thereof
The invention discloses a gas spray head cooling plate comprising a cover plate and a base body, wherein the base body comprises a soleplate and a side wall; multiple cooling liquid separation devices are arranged on the soleplate at intervals; a cooling liquid channel used for passing cooling liquid is respectively formed between the adjacent cooling liquid separation devices; and a hole suitable for passing gas is respectively arranged on the cooling liquid separation devices so that the gas is evenly cooled by the gas spray head cooling plate. The invention also discloses a semiconductor processing device which comprises the gas spray head cooling plate.
Owner:ADVANCED MICRO FAB EQUIP INC CHINA
2K-V speed reducer
InactiveCN103742610AEasy to processReduce manufacturing difficultyToothed gearingsPortable liftingEngineeringSmall tooth
The invention provides a 2K-V speed reducer. The speed reducer comprises a primary planetary gear mechanism and an involute small tooth difference gear mechanism. A planetary mechanism is composed of a central gear and a planetary gear. The involute small tooth difference gear mechanism is composed of an eccentric shaft, an outer gear and an inner gear casing. Under the drive of the eccentric shaft of the involute small tooth difference gear mechanism, the outer gear performs planar motion by the action of the inner gear casing, rotates around own axis reversely while revolving around the axis of the inner gear casing and outputs own rotation through a planet carrier. The speed reducer can be used for being connected with joint portions of industrial robots.
Owner:秦川机床工具集团股份公司
Sample enrichment chip, manufacturing method and enrichment method and on micronano structure
InactiveCN101000290ARich sourcesMature processing technologyComponent separationPreparing sample for investigationDebyeEnrichment methods
The invention relates to sample enrichment chip, manufacturing method and enrichment method based on micro nanostructure. Its feature is that the enrichment chip is used quartz glass as backing material, formed by enrichment nanometer channel and micro sample transmitting pipeline. It applies MEMS technique to process the channel and pipeline one the quartz glass, strictly control channel depth to make it satisfy ion falling demand, utilizes low temperature bonding method to process for the substrate and covering piece, fills sample into chip pipeline, adds direct voltage in the sample pool to form electric field in nanometer channel. Because of Debye layers in the channel are superposed, while ion falling zoon is formed beside the channel. The sample moved under the action of the electric field is enriched beside the channel to form sample enrichment zoon. The chip has small volume, will not destroy enrichment component while enriching.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Underactuation self-adaptive capturing device capable of being folded and unfolded
ActiveCN103934829ASame structureImprove interchangeabilityGripping headsToolsUnderactuationGear wheel
The invention relates to a capturing device, in particular to an underactuation self-adaptive capturing device capable of being folded and unfolded. The underactuation self-adaptive capturing device capable of being folded and unfolded aims to solve the problems that an existing space robot is high in weight, complex in structure and poor in reliability and is provided with a great number of driving motors. According to the underactuation self-adaptive capturing device capable of being folded and unfolded, a single-finger root joint shaft is arranged on the upper surface of one end of a substrate, a two-finger root shared joint shaft is arranged on the upper surface of the other end of the substrate, a driving assembly is arranged on the lower surface of the substrate, a first transmission shaft is arranged on the lower surface of the substrate through a first bearing block, the single-finger root joint shaft is sleeved with a first synchronous belt wheel, the first transmission shaft is sleeved with a second synchronous belt wheel, the first synchronous belt wheel is connected with the second synchronous belt wheel through a synchronous belt, the middle of the two-finger root shared joint shaft is sleeved with a first gear, and the first gear is connected with the driving assembly. The underactuation self-adaptive capturing device capable of being folded and unfolded is used for the aerospace field.
Owner:HARBIN INST OF TECH
Double-layer annular truss antenna mechanism based on passive drive
ActiveCN104319453AIncrease stiffnessMeet the rigidity requirementsTelescopic elementsSatelliteElectrical and Electronics engineering
The invention provides a double-layer annular truss antenna mechanism based on passive drive and relates to double-layer annular truss type expandable antenna mechanisms. The problems that an existing large-caliber single-ring annular truss antenna is small in rigidity, the use rigidity requirement can not be met, an existing annular truss antenna mechanism is complex in drive structure and large in weight, inhaul cables are prone to be twisted after being used for unfolding the mechanism, and the unfolding reliability is low are solved. The double-layer annular truss antenna mechanism comprises multiple inner and outer truss foldable unit modules, multiple inner transition folding assemblies and multiple outer transition folding assemblies. Each inner and outer truss foldable unit module comprises an inner folding unit module, an outer folding unit module and two inner and outer connection truss assemblies. Inner supporting vertical rods and outer supporting vertical rods which are opposite are connected through the inner and outer connection truss assemblies. After the inner and outer truss foldable unit modules are unfolded, an inner and outer double-layer annular truss polyhedron is formed. The double-layer annular truss antenna mechanism is used for a satellite, a space station and a space probe.
Owner:HARBIN INST OF TECH
Nutrition replenisher containing sialic acid and its derivative
InactiveCN1701789ALose stabilityHigh chemical stability of ingredientsPowder deliveryOrganic active ingredientsAbsorption capacityActive component
Disclosed are nutrition replenisher containing sialic acid and its derivative, which also comprises mixed vitamins and plant extract, and the product form includes oral liquid, powder preparation, tablet and capsule, the biological functionality of each active component in the product have synergistic actions. The long-period administration of the novel nutrition replenisher using the sialic acid and its derivative as the main functional raw material can help for improving physical quality, absorption capacity of intestinal tract for vitamins and minerals, and learning capability of the brains.
Owner:韩孝清
Electromagnet driven gyroscope based on nanometer film quantum tunneling effect
InactiveCN101655368AReduced Power RequirementsMature processing technologyTelevision system detailsImpedence networksGyroscopeClassical mechanics
The invention relates to a micro-mechanical gyroscope, in particular to an electromagnet driven gyroscope based on a nanometer film quantum tunneling effect, solving the problem of the existing micro-mechanical gyroscope that an applied drive mode, an applied detection mode and the structures corresponding to the drive mode and the detection mode limit the performance of the gyroscope to be further improved. The gyroscope comprises a carrier plate embedded with a permanent magnet and a gyroscope tube core, wherein the gyroscope tube core is internally enveloped with a gyroscope sensitive mechanism which comprises a support frame body, a glass base plate, a composite beam and a mass block; the composite beam is formed by a detection beam and pentacle-shaped drive beams symmetrically positioned at the two sides of the detection beam; the connection place between the detection beam and support frame body is provided with a nanometer film quantum tunneling apparatus; the mass block is provided with a feedback lead wire and a drive lead wire; a connection lead wire at the two ends of the feedback lead wire and the drive lead wire, which is positioned along the composite beam, is connected with a lead wire pad corresponding to the support frame body. The gyroscope has simple, rescannable and compact structure, is suitable for microminiaturization, and greatly improves performance parameters such as sensitivity, and the like, compared with the existing micro gyroscope.
Owner:ZHONGBEI UNIV
High voltage and ultra-high voltage direct current (DC) cross-linked polyethylene insulated sea electric power cable
InactiveCN102360615AFree from polarization electric field corrosion effectsImprove mechanical propertiesPower cables with screens/conductive layersSubmarine cablesCross-linked polyethyleneCorrosion
The invention relates to a high voltage and ultra-high voltage direct current (DC) cross-linked polyethylene insulated sea electric power cable, comprising a waterproof conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a semi-conductive waterproof buffer layer, a metal shielding layer, a semi-conductive plastic reinforcing protective layer, filling strips, a cabling strapping tape, a metal armoring layer and an outer coating respectively from inside to outside in sequence. The high voltage and ultra-high voltage DC cross-linked polyethylene insulated sea electric power cable adopts a positive and negative DC transmission wire core integrated cabling structure, and avoids the polarized electric field corrosion effect of the metal armoring layer, and the metal armoring layer of the cable can be manufactured by using a common galvanized mild steel wire. Simultaneously, a dual-core DC high voltage sea electric power cable is more convenient to lay than a single-core DC high voltage sea electric power cable, and occupies less tidal flat laying route resource. The DC high voltage sea electric power cable can adopt a single solid core aluminum conductor, and has low manufacturing cost and better water-tightness.
Owner:宜昌联邦电缆有限公司 +1
Terahertz artificial birefringence device based on periodic chirped grating
InactiveCN105974503ALow costAvoid lossPolarising elementsDiffraction gratingsHigh resistancePhase shifted
The invention discloses a terahertz artificial birefringence device based on a periodic chirped grating. According to the terahertz artificial birefringence device, an artificial birefringence effect is formed through etching a submillimeter-scale relief grating structure on the surface of a high-resistance silicon chip, thereby realizing functions of terahertz wave phase shift and polarization state transition. According to the device, a specific period chirped structure is adopted. Not only is periodicity of the grating kept, but also the chirped structure is introduced. Compared with a common periodic grating, the terahertz artificial birefringence device is advantageous in that the birefringence coefficient and the birefringence bandwidth of the device are improved; a high birefringence coefficient which is larger than 0.35, broadband birefringence flatness and a good linear phase shift characteristic are realized in a terahertz waveband; a highest phase shift coefficient reaches deltaphi=1.6pi; and polarization conversion rate exceeds 99% when the terahertz artificial birefringence device is used as a one-half wave plate. Compared with a metal grating and a metal hypersurface structure, the terahertz artificial birefringence device is made of a full dielectric material and greatly improves transmittance of the device; low loss and broad band are realized; and the terahertz artificial birefringence device can be widely used for regulating terahertz wave phase and polarization.
Owner:NANKAI UNIV
Method for pickling pork head meat
The invention relates to a method for pickling pork head meat. The reasonable-process method for pickling pork head meat, capable of being used for making the pickling pork head meat with the unique flavor does not exist in the prior art. The method provided by the invention comprises the work procedures of raw material meat processing, pickling, rinsing, baking, cooking, packing and sterilization. In the raw material meat processing work procedure, pork heads are used as raw materials, pork tongues and pork faces are taken down, the pork heads are cut into halves, and the pork brain is taken out to obtain the port cranium; in the pickling work procedure, the pork cranium, the port tongues and the pork faces are pre-cooled to the temperature below 10 DEG C, pepper salt is smeared on the pork cranium, the port tongues and the pork faces, the picking is carried out for 28 to 32 days, the jar turning is carried out every day in the early four days, and the jar turning is carried out every three days from the fifth day; the cooking work procedure is carried out after rinsing and baking, the pork cranium is placed into boiling water to be boiled for 42 to 48 minutes to obtain pork cranium meat, the pork noses, the pork tongues and the pork faces are steamed for 18 to 22 minutes by 100-DEG C steam, and the pork ears are steamed for 28 to 32 minutes by 100-DEG C steam; and the finished products of pickled pork head meat are obtained through the work procedures of packing and sterilization. The method has the advantages that the process is reasonable, and the manufactured pork head meat has unique flavor.
Owner:ZHEJIANG QINGLIAN FOOD
Gas magnet mixed ball hinge joint and assembly method in use
PendingCN109210073ASimple structureMature processing technologyPivotal connectionsPivotsPower flowElectromagnet
The invention discloses a gas magnet mixed ball hinge joint and an assembly method in use. For a conventional air flotation ball hinge joint, multi-pose work is hard to realize. The provided gas magnet mixed ball hinge joint comprises a ball head, a ball socket, a support rod, a base, a main magnet exciting coil, auxiliary magnet exciting coils, and displacement sensors. When zero adjustment of the ball head is carried out, a displacement detection system determine the eccentric amount of the ball head based on the gap between the ball head and the ball socket, the gap is detected by four displacement sensors; and based on the eccentric amount of the ball head, the current in six auxiliary magnet exciting coils is adjusted so as to overlap the center of the ball head and the center of theball socket. Through the balance between pre-tensioning of magnetic force and gas film support force, the ball hinge joint can move in different positions, the application range of the air flotation ball hinge is enlarged, the magnetic force is pre-tensioned by using an electromagnet, and the control is easy.
Owner:HANGZHOU DIANZI UNIV
Extra wide angle lens
ActiveCN103499874AMature processing technologyMature processing technology, mature technologyOptical elementsCamera lensMeniscus
The invention discloses an extra wide angle lens which comprises an aperture slot, a lens set composed of six spherical glass lenses and a lens cone. The lens set comprises the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are coaxially arranged in sequence from the object side to the image side. The first lens and the second lens are meniscus lenses with negative focal power and protruding to the object side, the third lens and the fourth lens are double convex spherical lenses with positive focal power, and the fifth lens and the sixth lens are glued so that a lens element with positive focal power can be formed; the aperture slot is located between the third lens and the fourth lens. The view angle of the extra wide angle lens can reach the extra wide angle of 170 degrees. Machining of the lens is easy to achieve, cost is low, and the extra wide angle lens can satisfy the requirement for the high definition quality.
Owner:深圳市英迈吉科技有限公司
Rocket-carrying telescope-feed boom deployment mechanism
InactiveCN101788250AMeet precision requirementsImprove pointing accuracySelf-propelled projectilesInstrumentsLocking mechanismEngineering
The invention discloses a rocket-carrying telescope-feed boom deployment mechanism. The rocket-carrying telescope-feed boom deployment mechanism is characterized by comprising a base and a plurality of nested extension units, wherein the base comprises a lower base, an upper base, a rotating shaft and a locking mechanism; the lower base and the upper base can rotate the boom deployment mechanism by 90 degrees and automatically fix the boom deployment mechanism through the rotating shaft and the locking mechanism; each extension unit comprises a rod-shaped cylinder, a nested pipe clamp fixed at one end of the rod-shaped cylinder, and a stop locking mechanism arranged on the nested pipe clamp; the other end of the nested pipe clamp is nested into the rod-shaped cylinder of the next extension unit so as to limit the movement of the rod-shaped cylinder of the next extension unit; the base is connected with the rod-shaped cylinder at the bottommost end of the extension units through the upper base, and the diameters of the rod-shaped cylinders gradually decrease according to the design sizes and assembly space; and the boom deployment mechanism also comprises a connecting ring.
Owner:NAT SPACE SCI CENT CAS
Clamping and releasing device for on-orbit mutual separation of master spacecraft and slave spacecraft
ActiveCN106628273AHigh clamp release reliabilityHigh separation precisionCosmonautic vehiclesCosmonautic component separationEngineeringSlide plate
The invention provides a clamping and releasing device for on-orbit mutual separation of a master spacecraft and a slave spacecraft. The clamping and releasing device comprises a pin puller (7), a pin puller support (12), two springs (8), a pre-tightening bolt support (9), a pre-tightening bolt (10), a thrust spring (4), four polytetrafluoroethylene sliding blocks (32), two door type sliding plate limiting supports (6), a door type sliding plate (2), two tension spring supports (11), a driven separation plate (18), a driving push plate (17), a main installation plate (1) and a thrust spring installation support frame (5). The middle of the main installation plate (1) is provided with a square hole (29). The thrust spring installation support frame (5) is fixed to the square hole (29). One end of the thrust spring (4) abuts against the thrust spring installation support frame (5). The door type sliding plate (2) is clamped in a sliding groove (33). The pin puller (7) is installed on the pin puller support (12). The driving push plate (17) is wrapped in the driven separation plate (18).
Owner:NAT SPACE SCI CENT CAS
Metamaterial with dual function of sound insulation and microwave stealth
ActiveCN108711681ASimple structureMature processing technologyMagnetic/electric field screeningSound producing devicesNon symmetricMicrowave
The invention firstly discloses a metamaterial with a dual function of sound insulation and microwave stealth. An upper conductive film layer (1) is located above a middle skeleton layer (2) and is periodically arranged; a lower conductive film reflecting layer (3) is located below the middle skeleton layer (2); the upper conductive film layer (1) and the lower conductive film reflecting layer (3)respectively deposit in surfaces of an upper PET film (4) and a lower PET film (5); the upper PET film (4) supports the upper conductive film layer (1); the upper conductive film layer (1) has a ringstructure; the middle skeleton layer (2) adopts a symmetric or asymmetric structural unit; and a ring structure period of the upper conductive film layer (1) is the same as or different from a periodof the middle skeleton layer. The metamaterial achieves sound transmission loss more than 10 dB in a frequency band of 1050 Hz-1350 Hz, and has a high application prospect in effective suppression ofa backward radar cross section (backward RCS reduces by more than 10 dB) in the frequency band of 7.1 GHz-18.0 GHz.
Owner:SOUTHEAST UNIV
Center-adjustable ball spherical hinge joint and center adjusting method of center-adjustable ball spherical hinge joint
ActiveCN106015311ASimple structureMature processing technologyBearing repair/replacementShaft repair/replacementSteel ballEngineering
The invention discloses a center-adjustable ball spherical hinge joint and a center adjusting method of the center-adjustable ball spherical hinge joint. Due to machining and assembling errors, a spherical hinge joint is in an eccentric state usually. Supporting ball guide holes are formed in a supporting ball socket of the ball spherical hinge joint. A displacement sensor is installed in a sensor installation hole of the supporting ball socket. Restraining ball guide holes are formed in a restraining ball socket. Double-thread center adjusting mechanisms are installed in the supporting ball guide holes and the restraining ball guide holes to adjust ball steel balls. The center adjusting method includes the steps that the center-adjustable ball spherical hinge joint is installed; when the double-thread center adjusting mechanisms are installed, main threaded columns and auxiliary threaded columns rotate in the opposite directions, and the restraining ball steel balls and the supporting ball steel balls are quickly located; and when centering adjustment is conducted by the double-thread center adjusting mechanisms, the main threaded columns and the auxiliary threaded columns rotate in the same direction. The double-thread structures rotate in the opposite directions when the eccentric error is relatively large, and the eccentric error is quickly reduced; and the double-thread structures rotate in the same direction when the eccentric error is relatively small, and the centering condition of the balls and the ball sockets are finely adjusted.
Owner:HANGZHOU DIANZI UNIV
MEMS (micro electro mechanical system) silica-based micro-hotplate provided with thermal insulation channels and processing method of MEMS silica-based micro-hotplate
InactiveCN104176699AStable supportAvoid damageTelevision system detailsPiezoelectric/electrostriction/magnetostriction machinesInsulation layerThermal insulation
The invention relates to the field of silica-based micro-hotplates, and discloses an MEMS (micro electro mechanical system) silica-based micro-hotplate provided with thermal insulation channels and a processing method of the MEMS silica-based micro-hotplate. The MEMS silica-based micro-hotplate comprises a monocrystal silicon substrate, the thermal insulation channels, a lower insulation layer, a heating layer and an upper insulation layer, wherein one or more groups of thermal insulation channels with certain depths are formed in the upper surface of the monocrystal silicon substrate, and each group of channels comprises a plurality of parallel straight channels; the thermal insulation channels and the upper surface of the monocrystal silicon substrate are covered with the lower insulation layer; and the heating layer and the upper insulation layer are arranged above the lower insulation layer. According to the micro-hotplate, a film on the lower insulation layer as well as the heating layer and the upper insulation layer above the film on the lower insulation layer can be stably supported by the thermal insulation channels, and the heating layer is prevented from falling off due to the fact that the lower insulation layer deforms and warps during high-temperature work of a device; and meanwhile, the surfaces of the thermal insulation channels are covered with the silicon dioxide film, the silicon dioxide film can have a better thermal insulation effect, the detection sensitivity of the micro-hotplate is increased, and the service life is prolonged.
Owner:SUZHOU LEANSTAR ELECTRONICS TECH
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