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912results about How to "increase contact area" patented technology

Blood vessel interventional operation conduit or guide wire control device based on two-point clamping

ActiveCN103157170Aincrease contact areaIncrease the upper limit of friction
The invention discloses a blood vessel interventional operation conduit or guide wire control device based on two-point clamping. The blood vessel interventional operation conduit or guide wire control device comprises a main finger assembly, an auxiliary finger assembly, a drive assembly and a conduit or guide wire guiding assembly. Rotary motion of an idler wheel in the main finger assembly can achieve advancing or drawing-back of a conduit or a guide wire. The main finger assembly and the auxiliary finger assembly can achieve forward rotation of the conduit or the guide wire and backward rotation of the conduit or the guide wire through combined motion. When the conduit or the guide wire is installed and clamped, the auxiliary finger assembly can directly move through a hand along the direction of being far away from the main finger assembly, and after grip is loosened, the auxiliary finger assembly returns through the action of tension of a spring on the interior of the auxiliary finger assembly. The drive assembly can drive the main finger assembly and the auxiliary finger assembly to move. The conduit or guide wire guiding assembly is used for achieving guiding of the conduit or the guide wire and rapid installation of a Y valve. According to the blood vessel interventional operation conduit or guide wire control device based on the two-point clamping, advancing and rotation of the conduit or the guide wire can be achieved, workloads of a doctor are reduced, working hours of the doctor in radiation environment are reduced, and motion accuracy of the conduit or the guide wire in blood vessels is improved.
Owner:北京中科鸿泰医疗科技有限公司

Continuous feeding device for electric arc furnace preheated by flue gases

InactiveCN103075881AImprove mechanical efficiencyincrease contact area
The invention discloses a continuous feeding device for an electric arc furnace preheated by flue gases. The device comprises a double-duct conveying trough and a flue gas guiding hood; a carrier plate with a flue gas channel is arranged in the middle part of the double-duct conveying trough; a material circulating duct is arranged above the carrier plate, and a flue gas circulating duct is arranged below the carrier plate; a seal gate matched with the upper opening of the lower end of the material circulating duct is arranged on the flue gas guiding hood; the double-duct conveying trough forms a flue gas diffusion heat exchanging mechanism from bottom to top, contact area between materials and high temperature flue gas is enlarged, the stay time of the flue gas is long, and the material preheating effect is greatly improved; as the double-duct conveying trough is arranged in an inclined way, the feeding point is raised, the trough bevel is large, the waste steel material blanking point can easily close to the center high temperature area of the furnace, so that the cold area phenomenon is eliminated; as the diffusion and heat exchange designs are realized, the powder dust in the exhausted flue gases is greatly reduced, the flue gas flowing is more in line with the natural rules, and the problems of exhaust pipe blockage and the like are solved.
Owner:CISDI ENG CO LTD

Preparation method and application of nitrogen-doped graphene/nitrogen-doped carbon nanotube/zinc cobaltite composite material

The invention discloses a preparation method of a nitrogen-doped graphene/nitrogen-doped carbon nanotube/zinc cobaltite composite material. The method comprises the following specific steps: (a) adding potassium permanganate, hydrochloric acid and hydrogen peroxide to graphene oxide, and carrying out a stirring reaction to obtain porous graphene; (b) dialyzing the porous graphene for 8-12 days, carrying out ultrasonic dispersion, then adding a carbon nanotube, carrying out ultrasonic mixing and carrying out suction filtration to form a film; (c) drying the film, and then adding ammonium hydroxide for reaction for 24 hours; (d) adding zinc nitrate, cobalt nitrate, urea, ammonium fluoride, absolute ethyl alcohol and distilled water for reaction for 4 hours; and (e) transferring a mixture to a tube furnace, and sintering the mixture in a nitrogen atmosphere for 2 hours, so as to obtain the composite material. The composite material has relatively good flexibility; the electrochemical properties are barely changed after the composite material is bent into various angles; the specific capacitance value of the composite material can be up to 1802F/g; compared with relatively simple graphene, the carbon nanotube and most of composite materials of the graphene and the carbon nanotube, the composite material provided in the invention are significantly improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Phosphorus-free foam-free low-temperature steel plate surface cleaning agent and preparation method thereof

InactiveCN102978022Areduce tensionincrease contact area
The invention discloses a phosphorus-free foam-free low-temperature steel plate surface cleaning agent and a preparation method thereof and is applied to production of coating steel plates. The cleaning agent comprises the following chemical components: 5-30 percent of sodium hydroxide, 5-30 percent of sodium carbonate, 3-15 percent of sodium silicate, 0.5-3 percent of chelating agent, 1-10 percent of anionic surfactant, 0.1-1 percent of full-mixture block polyether nonionic surfactant, 0.1-2 percent of silicone oil and 50-75 percent of water. The preparation method comprises the following steps of: adding sodium hydroxide into a small amount of water, adding the chelating agent, and uniformly stirring; adding water, keeping the temperature to be 20-30 DEG C, sequentially adding sodium carbonate and sodium silicate, and stirring until the mixture is dissolved; adding the anionic surfactant, the full-mixture block polyether nonionic surfactant and the silicone oil, and stirring until the mixture is dissolved; and finally adding water and uniformly stirring. Multiple surfactants are used for compounding, so that the cleaning agent can be adsorbed to the surface of a cold-rolled steel plate, an ideal emulsifier is formed, the tension of an oil-water interface is reduced, the contact area is increased, and multiple effects of defoaming, permeating and cleaning are simultaneously realized.
Owner:UNIV OF SCI & TECH LIAONING

High-temperature crude synthesis gas chilling device

The invention relates to a high-temperature crude synthesis gas chilling device, which comprises a gas flow channel of a chiller and an atomizing nozzle arranged on the side wall of the gas flow channel, wherein the gas flow channel is connected with a reaction chamber and a cooling chamber of a gasification furnace and provides a mixing space for a chilling medium and high-temperature crude synthesis gas; the atomizing nozzle is a single-flow-channel pressure nozzle or a double-flow-channel gas-liquid two-phase nozzle, and is partitioned into 1-20 layers; each layer is uniformly distributed on the circumference and is used for uniformly spraying the chilling medium into the high-temperature crude synthesis gas and chilling the synthesis gas to be in a specific temperature range; the gas flow channel is a water cooled-wall or a fire-resistant and wear-resistant liner or the combination of the water-cooled wall and the fire-resistant and wear-resistant liner; and the gas flow channel has a cylindrical structure or a conical structure or the combination of the cylindrical structure and the conical structure. The chilling device has the advantages of high chilling efficiency, large gas-liquid contact area, high chilling rate, small dosage of the chilling medium, mature manufacturing technology, high reliability and capability of reducing the consumption and the discharge of cleaning black water, and relates to an environmentally-friendly and-energy saving technology.
Owner:WISON ENG

Scrap steel preheating and continuous feeding system constructed based on waste heat recovering channel of electric-arc furnace and application method of system

The invention discloses a scrap steel preheating and continuous feeding system constructed based on a waste heat recovering channel of an electric-arc furnace and an application method of the system. The waste heat recovering channel of the electric-arc furnace is formed by connecting a flow guide tube, a transition tube, a heat exchange and material storing box and a preheating channel, wherein hot gas sequentially flows through the flow guide tube, the transition tube, the heat exchange and material storing tube and the preheating channel; a scrap steel storing box, a heat-resistant chain scraper conveyor and a hydraulically-controlled feeding trolley are mounted on a foundation of the waste heat recovering channel of the electric-arc furnace to form the scrap steel preheating and continuous feeding system; the scrap steel is conveyed from low to high through the chain scraper conveyor in the preheating channel and continuously fed into the heat exchange and material storing box to be stacked, and then the feeding trolley at the inner bottom part of the heat exchange and material storing box can continuously intermittently move to push the scrap steel by layers from the bottom into the electric-arc furnace to smelt; the scrap steel fed into the furnace is at the temperature exceeding 900 DEG C, and more than 120kW.H/T of electricity can be saved; the gas can be discharged from the preheating channel while being cooled to be 100-150 DEG C and then dedusted for later use, and thus the energy can be saved, and the consumption can be decreased; in addition, the continuous feeding system does not affect the automatic slag flowing and tapping works of the electric-arc furnace.
Owner:NANJING YOU RONG ENERGY SAVING TECH CO LTD

Double-shielding lightning rod and earthing device

ActiveCN102035140AAttenuation of lightning electromagnetic pulseincrease contact area
The invention relates to a lightning-protection earthing device, in particular to a double-shielding lightning rod and an earthing device, in particular to a lightning-protection earthing device suitable for fields, such as communication, electric power or traffic and the like. The lightning-protection earthing device belongs to the technical field of lightning-protection earthing. The double-shielding lightning rod and earthing device comprises a lightning rod tube, one end part of the lighting rod tube is provided with an insulated post fixedly connected, and the insulated post is provided with a calabash ball provided with a conducted ball tip; the conducted ball tip is provided with an anti-lightning shielding cable of which one end is connected with the conducted ball tip, and the other end passes through the calabash ball and the insulated post to extend into the lightning rod tube; the anti-lightning shielding cable is distributed along the length of the lightning rod tube; and the other end of the anti-lightning shielding cable, which is correspondingly connected with the conducted ball tip, is connected with a grounding electrode. The earthing device is compact and simple in structure, has good anti-lightning effect, can effectively attenuate thunder and lightning electromagnetic pulse, is convenient to install and use and is safe and reliable.
Owner:GELIN ELECTRICAL EQUIP PLANT WUXI CITY

Flexible mechanical hand

The invention discloses a flexible mechanical hand which comprises a connection column with a hollow cavity, a total air inlet formed in the connection column, a connection plate arranged at one end of the connection column and at least two finger mechanisms. Each finger mechanism comprise a finger face, a finger back, a first cavity arranged between the finger face and the finger back, at least one semicircular arch body arranged on the finger back, a second cavity formed in the semicircular arch body and communicating with the first cavity, and a convex portion which is convexly arranged onthe other side of the finger face and provided with the lower surface being an inclined face, wherein the swelling deformation of the finger back is larger than that of the finger face. Each finger mechanism further comprises a connecting piece connected to the root of the corresponding finger, a third cavity arranged in the connecting piece and communicating with the first cavity, an air inlet formed in the connecting piece, an air outlet formed in the connection column and communicating with the air inlet, a sliding groove formed in the connecting piece, and a sliding rail arranged on the connecting plate and used for penetrating into the sliding groove. The flexible mechanical hand is large in grabbing force and capable of gabbing objects with different sizes.
Owner:SUZHOU DITIAN ROBOT & AUTOMATION CO LTD

Efficient treatment device for industrial waste gas

The invention discloses an efficient treatment device for industrial waste gas. The efficient treatment device comprises an electric dust removal tank, a cleaning dust removal tank and a drying device, wherein a plurality of vertical partition boards are arranged at the bottom of the electric dust removal tank, an electric dust removal assembly is arranged at the top of the electric dust removal tank and adopts an adsorption plate which bulges downwards, is in a wavy shape and is used for realizing electric dust removal, the adsorption plate is connected with an electric dust removal device circuit fixed on the outer side of the electric dust removal tank, an internal slide rail is arranged on the inner side surface of the adsorption plate, a plurality of sliding motors are glidingly connected onto the internal slide rail, cleaning sliders are arranged on the sliding motors, bumps of the adsorption plate and the vertical partition boards are matched to form an S-type electric dust removal channel, the left side of the electric dust removal channel is communicated with a gas inlet pipe, and a pretreatment filtering device is arranged on the gas inlet pipe. The efficient treatment device has the advantages that the structure is simple, the waste gas treatment effect is good, the occupied area and space are small, and inside of the dust removal channel can be cleaned in real time.
Owner:GUODIANKANGNENG TECH CO LTD

Drying and dispersing device for wet powder materials

The invention discloses a drying and dispersing device for wet powder materials. The device comprises a drying cylinder, multiple screening plates and an anti-settling rotary assembly. The drying cylinder comprises a cylinder body, a top cover and a cylinder bottom, a feed inlet is formed in the lower portion of the side wall of the cylinder body, and a discharging opening is formed in the top cover. The anti-settling rotary assembly comprises a rotary rod, a connecting plate, a scraper and a rotation driving element, the rotary rod penetrates through the cylinder body or the two side walls of the cylinder bottom and is arranged below the feed inlet, the rotation driving element is fixedly connected with the end of the rotary rod and arranged on the outer side of the cylinder body or the outer side of the cylinder bottom, the lower end face of the connecting plate are matched with the upper end face of the cylinder bottom, the screening plates are transversely arranged in the cylinder body and are longitudinally distributed along the axis of the cylinder body, the screening plates are provided with a plurality of screening holes penetrating through the upper end faces and the lower end faces of the screening plates, and according to every two adjacent screening plates, the aperture of the screening holes in the lower screening plate is larger than that of the screening holes in the upper screening plate. The drying and dispersing device overcomes the defects of an existing flash dryer, and has the advantages of being good in drying performance, high in reliability and low in cost.
Owner:江苏雄风科技有限公司

Safe portable multifunctional oxygen-hydrogen integrated machine

ActiveCN105063652Aincrease contact areaIncreased solubility
The invention relates to a safe portable multifunctional oxygen-hydrogen integrated machine, which belongs to the technical field of health-care equipment. The safe portable multifunctional oxygen-hydrogen integrated machine comprises an existing electrolysis unit, and an ultrasonic unit, a heating unit and a pressure unit are arranged in a machine body, wherein the ultrasonic unit mainly utilizes the atomization effect of an ultrasonic microporous atomization piece, the heating unit mainly utilizes a heating piece to control the temperature of water, and the pressure unit utilizes a pressure sensor to monitor the gas pressure in the machine body, so that multiple functions of producing hydrogen, oxygen, an oxygen-hydrogen mixture, hydrogen-enriched fog, oxygen-hydrogen-enriched fog, hydrogen-enriched water and oxygen-hydrogen-enriched water can be realized. The dissolved degree of hydrogen in the hydrogen-enriched water prepared by the safe portable multifunctional oxygen-hydrogen integrated machine is high, the effect of the hydrogen-enriched water is good, therefore, a cup required, by equipment, for containing water is small, and the dissolved degree of gas can be increased by adopting the hyperbolic tower-shaped cup. Compared with the prior art, the safe portable multifunctional oxygen-hydrogen integrated machine has the advantages of small size, convenience in carrying, high safety and less possibility in danger occurrence when the machine is used for producing hydrogen.
Owner:保定市氢水源生物科技有限公司
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