565 results about "Needle type" patented technology

The invention discloses a preparing method of an artificial graphite cathode material used in lithium ion battery; it aims at resolving problems that cathode material possesses higher discharging capacity, coulomb efficiency and long circle life. The preparing method includes following steps: coal or petroleum needle-type coke is comminuted, and hot processed for 1-48 hours at 800deg.C-3000deg.C, comparing with current technique, the cathode material adopts needle-type coke to be comminuted, and hot process, defect that high crystallinity graphite material can not be circled in electrolyte system of PC solvent stably, and it can discharge in big times, it can be used in lithium ion drive battery, and craft is easy, and it fits for industrialization production.

The invention discloses a method for preparing a bimetal composite plate by stirring friction braze welding. The method comprises that: a plate with small hardness is used as a covering layer metal plate; a plate with high hardness is used as a base layer metal plate; the covering layer metal plate and the base layer metal plate are horizontally fixed on a working platform surface in a lap joint mode; solders which can generate eutectic reaction with one of the upper/base layer metal plates are preset between the upper/base layer metal plates; a non-needle type cylinder friction device is arranged over the covering layer metal plate; the non-needle type cylindrical friction device is made to rotate and be pressed to be closely contacted with the surface layer of the covering layer metal plate, but not penetrate the covering layer metal plate, and the non-needle type cylindrical friction device rotates in the original position or moves forward along the surface of the covering layer metal plate while rotating; by utilizing frictional heat to melt the solders, the upper/base layer metal plates are both quickly melted in the solders, thereby achieving excellent interface combination; and the excessive solders are squeezed out, and a thin and dense soldering seam is formed, so that the bimetal composite plate is prepared. Compared with the braze welding in a furnace, the method has the advantages of high efficiency, energy conservation, pressure lead-in, unnecessary soldering flux and gas protection and short holding time at a high temperature.

A high frequency alternating current medical device and method of using such is disclosed. High frequency alternating current medical device comprises a power source, an electric field generator, a self-limiting conductive material electrical component, at least one probe or needle-type projection, and at least two conductive segments located on probe or needle-type projection. At least two conductive segments are electrically connected to electric field generator so that an electric field is created between conductive segments, which induces an electrical current, which generates heat, and causes a certain desired precise cell injury. Self-limiting conductive material electrical component allows such precise cell injury because it limits electrical current through target tissue. Invention may be used in medical, dental, or veterinary applications. Exemplary embodiments include cosmetic applications, treatment of wrinkles, remodeling of subcutaneous tissue, treatment of muscle spasms, and others. Medical device can be small, hand-held, and easily manipulated to perform surgery.

The invention discloses a measuring device for gas permeability of a coal rock core. The measuring device mainly comprises a high-pressure gas source module, a core holder module, a circular pressure loading module, a data metering module and a vacuum treating module, which are connected through needle-type valves (3,5,7,9 and 13), wherein the high-pressure gas source module comprises a high-pressure gas bottle (1), a pressure relief valve (2) and a buffer container (4); the core holder module is a core holder (8); the circular pressure loading module is a hand-operated pump (12); the data metering module comprises precision pressure gauges (6 and 10) and a soap bubble flowmeter (11); and the vacuum treatment module is a vacuum pump (14). The measuring device is convenient to operate, has good repeatability of measured data, small experiment error and low cost, and is suitable for the testing field of gas permeability and equivalent liquid permeability of the coal rock core.

The invention relates to a needle-type electric heating cigarette system which comprises a power supply part, a heating part and a cigarette clamping part which are sequentially connected in a sealing manner. The needle-type electric heating cigarette system is characterized in that the power supply part mainly comprises a housing, a control circuit and a temperature display (11); the heating part mainly comprises a heating plate heat preservation and insulation layer (3), a heating plate (6) and a heating wire (5); the cigarette clamping part mainly comprises a barrel wall heat preservation and insulation layer (7) and a heating needle (4); the heating needle (4) is electrically connected with the heating wire (5), the control circuit and the temperature display (11); and the barrel wall heat preservation and insulation layer (7) is also provided with a gas inlet (8). According to the invention, applicability is greatly strengthened; a heater has a simple structure; cost of a heating element, a power supply, the control circuit, insulating materials and the like is low; the needle-type electric heating cigarette system is convenient to use; no or little sidestream smoke is generated, so that the emission amounts of harmful ingredients and environmental smoke of cigarettes are obviously reduced; and the needle-type electric heating cigarette system can become a tobacco technology widely applied in the future.

The invention provides a scanning recognition method and system for a matrix type two-dimensional code image of a special value-added tax invoice. The method comprises the following steps of: processing content information for printing the special value-added tax invoice to form a character string; representing a binary '1' module through four printing points to obtain a matrix type two-dimensional code of the character string; printing the content information and the matrix type two-dimensional code on the special value-added tax invoice; scanning to obtain a whole image of the special value-added tax invoice to be recognized; cutting out matrix type two-dimensional code images of the whole image and carrying out decoding treatment on the matrix type two-dimensional code images; and outputting decoding data information of the matrix type two-dimensional code images. According to the invention, a condition of punching the invoice is effectively avoided when a needle type printer is used for printing the two-dimensional code of the multi-copy special value-added tax invoice; meanwhile, the information capacity of a unit area is improved; the printing and scanning recognition method and system provided by invention also can be used for recognizing the condition that a file paper surface contains a plurality of the two-dimensional code images and the recognition efficiency is high.

The production process of lonicera flower tea includes the following steps: picking up fresh flowers, sorting, spreading out and drying in the air, steaming, drying and cooling, forming, firing tea with low flame, drying in the air, screening, firing with strong flame, vacuum packaging and storing so as to obtain the invented gold-flower silver-needle type flower tea with beautiful appearance and good health-care effect.

The invention relates to processes for the production and elements (components) with a nanostructure (2; 4, 4a) for improving the optical behavior of components and devices and/or for improving the behavior of sensors by enlarging the active surface area. The nanostructure (2) is produced in a self-masking fashion by means of RIE etching and its material composition can be modified and it can be provided with suitable cover layers.

A heat regenerative engine uses water as both the working fluid and the lubricant. In operation, water is pumped from a collection pan and through a coil around a cylinder exhaust port, causing the water to be preheated by steam exhausted from the cylinder. The preheated water then enters a steam generator and is heated by a combustion chamber to produce high pressure super heated steam. Air is preheated in a heat exchanger and is then mixed with fuel from a fuel atomizer. An igniter burns the atomized fuel as the flames and heat are directed in a centrifuge within the combustion chamber. The speed and torque of the engine are controlled by a rocker and cam arrangement which opens a needle-type valve to inject high pressure super heated steam into a cylinder having a reciprocating piston therein. The injected steam expands in an explosive action on the top of the piston at high pressure forcing the piston down and drivingly rotating a linked crank cam and crankshaft. Exhaust steam is directed through a centrifugal condenser having an arrangement of flat plates. Cooling air from blowers circulates through the flat plates to condense the steam to a liquid state. The water condensation is returned to the collection pan for subsequent use in steam generation.

The invention discloses a mobile assembled multifunctional integrated test stand, which has a layered structure. In the structure, a first layer is a groove structure; a second layer is a test plate which can be embedded in the first layer movably, and a plurality of holes are distributed on the test plate; the third layer is a support layer which is supported by the groove by an insulated rod; the fourth layer is an insulating cloth test stand; the circuit of the test units of the test stand adopts multi-branch design; each branch comprises an electronic tripping device and a digital display meter arranged on a power supply side of the branch; and the electronic tripping devices and the digital display meters are arranged below the insulation test stand of the fourth layer. The test stand has the advantage of meeting arrangement requirements in power distribution conventional insulating test product tests such as insulating gloves, shoes, clothes, rods, pipes, plates, security helmets, pillar-type insulators, needle-type ceramic bottles, suspended insulators and lighting arrestors.

A 10kV power distribution circuit insulation tower head is disclosed, which is characterized in that: adopting hydrophobic high-strength insulation bar to be assembled with needle-typed insulator by gold tool and form an insulation tower head entity, or adopting hydrophobic high-strength insulation bar to be assembled with gold tool directly and form an insulation tower head. By using the invention, the insulation level of the power distribution circuit can be greatly improved, the thunder discharge air gap can be obviously enlarged, the lightning stroke and line break accidents can be effectively prevented and the climbing distance can be expanded, further, the structure type is easy to improve self-cleaning ability and the occurrence of pollution flashover can be basically and completely precluded, which is beneficial in charged operation, simple in operation process and improves the operation security.

A stress wave nondestructive detection device for ancient tree/ancient building timber structure inner decay comprises a plurality of sensors, a sensor fixing device, a force hammer, a microdestructive needle-type connector, a data process system, and a timber inner decay tomographic software; the sensors and the data process system are connected with a computer installed with the tomographic software through a plurality of wires. The device has strong adaptability, and can perform 'completely nondestructive' detection of inner decay for ancient building timber structures which are not suitable for nailing at external surfaces through the special sensors and sensor fixing device; as for test objects such as ancient trees with bark, the device can penetrate the bark by using the microdestructive needle-type connector so as to assist detection. Based on stress wave signals collected during detection, an inner decay tomographic image of the detected object can be constructed, and thus quantitative determination of the inner decay shape and position of the detected object is realized.

The invention relates to a needle type roughmeter, which comprises a support frame, a motion part, a plurality of faceplates and steel needles, wherein the support frame is provided with parallel slide rails; the motion part is positioned in the support frame and slides along the parallel slide rails, and the relative inner side wall of the motion part is provided with a plurality of faceplate inserting grooves; the faceplates are inserted into the faceplates inserting grooves and are provided with a plurality of vertical steel needles inserting grooves along the length direction; and the steel needles are inserted into the steel needles inserting grooves and can vertically fall onto the ground along the steel needles inserting grooves. The needle type roughmeter measures the roughness of the fixed surface, can measure area arrays for once and measure surfaces with a certain gradient, is convenient in operation, and has high precision.

The invention discloses a swelling-type hollow silk fibroin micro-needle drug delivery system and a preparation method thereof. According to the technical scheme of the preparation method, a swelling modified silk fibroin solution is casted in a PDMS mold to be vacuumized, dried and molded as a hollow needle-type housing. After that, a silk fibroin micro-needle array provided with cavities in the hollow needle-type housing is filled with powder-like or solution-like drugs, vacuumizing and drying are carried out to form a drug part. Finally, a layer of modified silk fibroin solution is cast, dried and molded as a cladded coating. The cladded coating is removed to obtain the swelling-type hollow silk fibroin micro-needle drug delivery system. The drugs are wrapped inside the cavities of the silk fibroin micro-needle arrays, so that the system is high in drug loading ratio and low in skin allergenicity and stimulation. The system facilitates the sustained release and the controlled release of micro-needle drugs. Meanwhile, according to the preparation method, since the swelling modified silk fibroin solution is cast, dried and molded in a mild processing condition, the system is low in processing cost and suitable for large-scale production. Drugs are directly wrapped in the cavities of the swelling hollow micro-needles, so that controlled-release drugs are swelled in the micro-needle base material. In this way, the biological activities of the controlled-release drugs are maintained, while the structure of the hollow silk fibroin micro-needle drug delivery system is greatly simplified. The system is better in practicality.

The invention discloses a slurry state bubble tower reactor with a needle type fin tube bundle. A plurality of vertical heat exchange tubes are arranged in the cylindrical reactor; the upper ends of the vertical heat exchange tubes are connected with a liquid distributor fixed below a container, while the upper ends are connected with a liquid collector fixed above the container; the outer walls of the heat exchange tubes are provided with horizontal needle type fins; the number of the needle fins arranged on the heat exchange tubes is 80-800 every meter, the diameter of the needle type fins is -10 mm, and the length of the needle type fins is 10 125 mm. The heat exchange tubes with the needle type fins are adopted to increase the heat exchange area and strength the heat exchange capability of the reactor on one hand, and on the other hand, the needle type fins distributed on the outer walls of the heat exchange tubes can obstruct the flowing of sizing agents and bubbles in the tower, can suppress the flow steeping effect caused by the vertical heat exchange tubes, improve the flow rate distribution of a slurry bed and achieve double functions of reinforcing heat transfer and improving the flow.

The invention relates to a system and a method for automatically measuring the property of a vapor stream vacuum pump, which belong to the technical field of vacuum test. The invention can be in strict accordance with the test principle and the method specified in national and international standards to automatically complete the test of parameters of the vapor stream vacuum pump. The system comprises a test cover, a gas flow testing unit, a fore pipe gas flow adjusting unit, and the like, wherein the gas flow testing unit comprises a dropper, a dropper magnetic valve is arranged at a gas inlet of the upper part of the dropper, and the outer side of the dropper is provided with an upper liquid level switch and a lower liquid level switch; a test cover gas flow adjusting unit and the fore pipe gas flow adjusting unit both comprise stepping motors, needle type micrometering valves and high-vacuum magnetic valves, drive buttons of the needle type micrometering valves are connected with the stepping motors, and gas outlets of the needle type micrometering valves are connected with the high-vacuum magnetic valves; and the liquid level switches, the dropper magnetic valve, and the like are connected with a computer control unit. The measuring method comprises the following steps of measurement of limit pressure of the vapor stream vacuum pump, measurement of volume flow rate, and measurement of critical fore pressure.

The invention relates to a needle type syringe with a function of accurately filtering dissolved drug. The needle type syringe with the function of accurately filtering the dissolved drug comprises a push rod, a first dissolved drug tube, a dissolved drug cavity, a second dissolved drug tube and an injection needle, wherein the push rod is movably installed in the first dissolved drug tube, and the first dissolved drug tube is communicated with the dissolved drug cavity; a main channel and an auxiliary channel are arranged inside the second dissolved drug tube; the first end of the main channel is communicated with the dissolved drug cavity, the second end of the main channel is communicated with the injection needle, the first end of the auxiliary channel is communicated with the dissolved drug cavity, and the second end of the auxiliary channel intersects with the main channel. The needle type syringe with the function of accurately filtering the dissolved drug further comprises a main one-way valve plate and an auxiliary one-way valve plate, wherein the main one-way valve plate is installed at the first end of the main channel, the auxiliary one-way valve plate is installed at the second end of the auxiliary channel, and the main one-way valve plate and the auxiliary one-way valve plate are opposite to each other relative to the opening direction of the main channel; an accurate filter film is arranged in the dissolved drug cavity, and the space, located between the first end of the main channel and the first end of the auxiliary channel, of the interior of the dissolved drug cavity is divided by the accurate filter film. The needle type syringe with the function of accurately filtering the dissolved drug can filter drug liquid, and the phenomenon that particles cause damage to the body of a patient is avoided.

The invention discloses a needle type porous material emitter array type mini-type field emission electric thruster. The electric thruster comprises a neutralizer and a thruster main body which are connected with each other, wherein the thruster main body comprises a grid electrode, an insulating bracket and a propellant storage chamber which are sequentially matched and connected with one another from top to bottom; the insulating bracket is of a frame-type structure; an emitter array matched with the grid electrode is arranged inside the insulating bracket; a heater and the propellant which are matched with each other are arranged below the emitter array; the propellant and the heater are both positioned in the propellant storage chamber. The needle type porous material emitter array type mini-type field emission electric thruster disclosed by the invention is small in size, compact in structure, simple in structure, capable of being made into a chip-shaped mini-type thruster, applicable to mini-type satellites and especially applicable to mini-type satellites of which the weight is smaller than 10kg.