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1998results about How to "Even contact" patented technology

Thunder-lightening induced solid-phase arc-extinguishing lightning arrester

The invention discloses a thunder-lightening induced solid-phase arc-extinguishing lightning arrester. The thunder-lightening induced solid-phase arc-extinguishing lightning arrester mainly consists of a lightning arrester shell, an arc-extinguishing rotary table, an electric conduction metal plate, a starting rod, a clamping rod, an induction coil, an arc-extinguishing barrel and a counting pointer; the arc-extinguishing rotary table is arranged inside the lightning arrester shell, and a flat spiral spring for pushing the arc-extinguishing rotary table to rotate is arranged at the central position of the arc-extinguishing rotary table; the electric conduction metal plate is arranged at the upper part of the arc-extinguishing rotary table; the arc-extinguishing rotary table is provided with a plurality of arc-extinguishing gas pills in the peripheral direction; one side of each arc-extinguishing gas pill is provided with a trigger electrode and a groove respectively, one end of each trigger electrode is connected with one of trigger ends of the corresponding arc-extinguishing gas pill through a lead, and the other ends of the trigger electrodes extend out of the edge of the arc-extinguishing rotary table; and the other of the trigger ends of the corresponding arc-extinguishing gas pill is connected with the electric conduction metal plate through a lead. The thunder-lightening induced solid-phase arc-extinguishing lightning arrester is simple in structure, reasonable in design, high in arc-extinguishing ability and stable and reliable to work, and the arc-extinguishing gas pills are changed quickly and conveniently.
Owner:王巨丰 +1

Preparation method of modified micron zero-valent iron and application method of modified micron zero-valent iron in remediation of heavy metal contaminated soil

The invention discloses a preparation method of modified micron zero-valent iron and an application method of the modified micron zero-valent iron in remediation of heavy metal contaminated soil. The preparation method of the modified micron zero-valent iron comprises the steps of cleaning of iron raw materials, preparation of micro iron, ultrafine grinding and modifying treatment. A modifying agent composed of water, xanthan gum, sulfide, a stabilizing agent, zeolite and blast furnace slag is adopted in the step of modifying treatment. The preparation method of the modified micron zero-valent iron has the beneficial effects that the production process of the modified micron zero-valent iron is simple, and the effect similar or superior to micron zero-valent iron is achieved while the cost is reduced; and in addition, the reaction activity is controlled, the oxidation rate is decreased, excellent stability is obtained, and the acting time of the micron zero-valent iron is longer. By the adoption of the application method of the modified micron zero-valent iron, the remediation cost of heavy metal contaminated underground water is further reduced. According to the preparation method of the modified micron zero-valent iron and the application method of the modified micron zero-valent iron in remediation of heavy metal contaminated soil, organic fertilizer is added in the soil treatment process so that the fertility of soil can be improved, the structure of soil can be improved through humic acid produced by the organic fertilizer, heavy metal elements, such as lead, chromium and arsenic, in underground water can be removed, and the concentration of pollutants such as nitrate and perchlorate can be reduced.
Owner:CHINESE ACADEMY FOR ENVIRONMENTAL PLANNING

Rotating biological-cathode microbiological fuel cell and sewage treatment method thereof

The invention relates to a rotating biological-cathode microbiological fuel cell and a sewage treatment method thereof, and belongs to the technical field of sewage treatment and resource recycling in environment engineering. The invention is characterized in that a cathode is made of carbon fibers and fixed to a circular ring. The outer layer of the rotating cathode biomembrane mainly comprises aerobic nitrifiers for completing the short-range nitrification of ammonia nitrogen. In the inner layer of the cathode biomembrane, nitrite nitrogen and nitrate nitrogen are used as electron acceptors, an electrode is an electron donor and used for denitrification. The structure of a reactor realizes controllable rotation speed of the cathode, controllable distance between the cathode and the anode, and controllable submerging proportion of the cathode biomembrane, and has the advantages of flexible operation, and convenient regulation and control. The rotating biological-cathode microbiological fuel cell can realize control on dissolved oxygen in a single-chamber reactor; and thus, the invention reduces the internal resistance of the cell, accelerates the biomembrane renewing, realizes the short-range nitrification and denitrification, synchronously completes decarburization and denitrification with low consumption and high efficiency, and extracts chemical energy from pollutants to form electric energy output.
Owner:DALIAN UNIV OF TECH

Mecanum wheel omnidirectional mobile vehicle and working method thereof

The invention provides a Mecanum wheel omnidirectional mobile vehicle and a working method of the Mecanum wheel omnidirectional mobile vehicle, relates to an omnidirectional mobile vehicle provided with a Mecanum wheel and a working method of the omnidirectional mobile vehicle which are particularly applicable to realizing omnidirectional movement of the vehicle in a narrow space, and provides the Mecanum wheel omnidirectional mobile vehicle with four wheels uniformly grounded and having capability of keeping a frame horizontal to the greatest extent and the working method of the Mecanum wheel omnidirectional mobile vehicle. The Mecanum wheel omnidirectional mobile vehicle comprises a frame, a power supply, a controller and Mecanum wheels, wherein the Mecanum wheels are connected to the bottom of the frame through an air bag suspending device; the air bag suspending device comprises a damper, an air bag, an air supply, an air valve and a height adjusting device; tops of the damper andthe air bag are fixedly connected to the bottom of the frame; an axle of the Mecanum wheels is connected to the bottom ends of the damper and the air bag; and the air bag is connected with the air supply through the air valve. According to the Mecanum wheel omnidirectional mobile vehicle, closed-loop control is performed over the horizontality of the frame and the distance from the frame to the wheels, so that the wheels provided by the invention are adaptable to the application requirements of special industry.
Owner:YANGZHOU WANFANG ELECTRONICS TECH

A method for treating waste gas with a biological trickling filter tower and its special device

The invention discloses a method for treating waste gas with a biological trickling filter tower: the waste gas is passed through the bottom of the biological trickling filter tower, treated by the biological trickling filter tower, and the treated waste gas is discharged from the top, and the biological trickling filter tower is composed of The bottom of the tower with exhaust gas inlet, the tower body, and the top of the tower equipped with exhaust gas outlet are composed. The tower body is composed of several biological treatment units stacked from bottom to top, and the biological treatment units on adjacent layers are arranged There is a liquid interlayer, and the air vents for the adjacent layers are arranged on the liquid interlayer, and each layer of biological treatment units is independently equipped with a nutrient solution spray system and a temperature control device from top to bottom. Biological packing layer and nutrient solution receiving pool; the invention increases the processing load of the unit packing; improves the plugging problem of the packing layer, avoids the occurrence of channeling phenomenon, and has uniform and sufficient gas-liquid contact; packing replacement and backwashing are more convenient; the process Economical, suitable for the purification treatment of complex volatile organic mixed pollutants.
Owner:ZHEJIANG UNIV OF TECH

ITO-Ag-ITO etching liquid for AM-OLED display screen and preparation method

The invention discloses ITO-Ag-ITO etching liquid for an AM-OLED display screen and a preparation method. The etching liquid is prepared from phosphoric acid, acetic acid, nitric acid, additives, surfactants and pure water. The preparation method of the etching liquid comprises the steps that the rotating speed of a stirrer of a dosing tank is kept at normal temperature and pressure, the pure water, the phosphoric acid, the acetic acid, the nitric acid, the additives, the surfactants and the balance pure water are sequentially added into the dosing tank, and after full stirring is conducted, the ITO-Ag-ITO etching liquid is prepared by introducing a fully-stirred mixture into a filter for filtration. According to the ITO-Ag-ITO etching liquid for the AM-OLED display screen and the preparation method, the ITO-Ag-ITO etching liquid is small in particle size and high in purity, the etching rate to different metal is basically the same, and reaction is stable; the etching rate can be controlled by adjusting the concentrations of the phosphoric acid and the nitric acid, the surface of a substrate etched through the etching liquid is clean and tidy, residues do not exist, the intermetallic layering phenomenon does not exist, remaining lines are flat and smooth, and the etching angle is kept between 70 degrees to 90 degrees.
Owner:JIANGYIN RUNMA ELECTRONICS MATERIAL

Self-circulation smashing and grinding device for rice processing

The invention relates to the field of agriculture product processing equipment, in particular to a self-circulation smashing and grinding device for rice processing. The self-circulation smashing andgrinding device for rice processing comprises a shell, a smashing shaft, a smashing blade, a first driving belt and a grinding plate, wherein a smashing mechanism is arranged in the shell; a guiding plate is arranged under the smashing mechanism; a rice milling mechanism s arranged under the guiding plate; a sieve plate is arranged under the rice milling mechanism; a crankshaft is arranged under the sieve plate; a sieve plate connecting rod is hinged to the lower surface of the sieve plate; the lower end of the sieve plate connecting rod is arranged on the crankshaft in a sleeving way; the grinding plate is arranged on the bottom part of the shell; and a circulation mechanism is arranged on the outer side wall of the shell. The smashing mechanism is used for preliminarily smashing rice, the rice milling mechanism is used for crushing the rice so as to carry out rice milling operation, the crushed rice falls onto the sieve plate, the rice is screened by utilizing the sieve plate, and the sieve plate vibrates up and down in the screening process, so that the screening efficiency is improved; and non-completely smashed rice enters a circulation cylinder through a circulation feed inlet so as to be circularly smashed.
Owner:邓博文

Micro-contact mixer

The invention relates to a high performance double multiple thin layer micro-contact mixer used for rapid mix, mass transfer and reaction of fluids in the chemical process, which belongs to the field of reaction and separation devices of chemistry and chemical engineering. The micro-contact mixer is formed by inserting an upper cavity chamber and a lower cavity chamber into an integral shell or by lapping closely connected shell components; a fluid inlet pipe of material A and a distribution chamber are communicated with a fluid parallel channel of material A; a fluid inlet pipe of material B and a distribution chamber are communicated with a fluid parallel channel of material B, thus forming the lower cavity chamber; a fluid mixing chamber and a mixed fluid outlet pipe are communicated to form the upper cavity chamber; two fluids enter the mixer from the inlet pipe through the distribution chamber respectively to make multiple thin layer contact in the fluid mixing chamber to realize rapid mix, mass transfer and reaction. The micro-contact mixer has the advantages of high mass transfer efficiency, high operational elasticity, uneasy blocking, easy processing and manufacturing and has good prospects in mixing and reaction fields such as the chemistry, chemical engineering, petrol-chemical industry, medicine and food.
Owner:TSINGHUA UNIV

Preparation method of lithium-copper composite negative electrode foil piece

The invention relates to a preparation method of a lithium-copper composite negative electrode foil piece. An intermittent local pressure enhancement method is adopted for uniformly adhering lithium metal foil pieces on the surface of a copper foil, and a lithium-copper composite negative electrode foil piece is formed. The preparation method comprises the following concrete steps: clamping the copper foil between the lithium metal foil pieces to form a lithium foil / copper foil / lithium foil sandwich layer; adopting common rolling equipment, starting a traction system, and enabling the lithiumfoil / copper foil / lithium foil sandwich layer to pass through a grinding roller, so as to form intermittent local pressure on the lithium foil / copper foil / lithium foil sandwich layer, wherein the pressure range is 0.05-5MPa, and a pre-compounded lithium foil / copper foil / lithium foil sandwich slice is formed; and enabling the pre-compounded lithium foil / copper foil / lithium foil sandwich slice to pass through the grinding roller again, and applying pressure for shaping, wherein the pressure range is 0.02-5MPa, so that the lithium-copper composite negative electrode foil piece is obtained. The preparation method provided by the invention has the beneficial effects that layer-to-layer contact of the prepared lithium-copper composite negative electrode foil piece is uniform, contact of a lithiummetal negative electrode with the copper foil is further improved, and the problem that the lithium metal foil piece and the copper foil are infirmly bonded is avoided, so that outage of lithium metal in a working process of a battery is prevented.
Owner:TIANJIN LISHEN BATTERY +1

Method for plating tungsten on diamond surface

The invention relates to a method for plating tungsten on a diamond surface. In the invention, a salt-bath tungsten plating method is adopted. The method comprises the following steps of removing greasy dirt on the surface of a diamond particle, mixing with tungsten powder in a crucible after coarsening and carrying out sensitization-activation treatment; carrying out high-temperature salt-bath tungsten plating in a fused salt environment; and then cleaning and drying through a clear water boiling method to obtain an finished product, wherein the method for removing greasy dirt and coarsening is as follows: placing the diamond particle in diluted alkaline and carrying out ultrasonic oscillation cleaning, and cleaning by deionized water; soaking and cleaning by diluted acid; washing to neutral by water; adding into a nitric acid solution for boiling for 3-10 minutes, carrying out coarsening treatment and washing to neutral by deionized water, and carrying out sensitization-activation treatment; and cleaning by deoionized water and drying after cleaning by alcohol for acetone, wherein the salt-bath tungsten plating is carried out in a vacuum furnace. The method for plating tungsten on the diamond surface can be used for effectively plating a layer of compact and uniform coating on the surface of the diamond particle; the phase is mainly composed of WC (Wolfram Carbide) and W (Wolfram), so that toxic substances are not generated in the process. Moreover, the process is simple and the cost is low.
Owner:SOUTHEAST UNIV

Prefabrication platform and prefabrication method for jacketed pipe

The jacketed pipe prefabrication platform and prefabrication method of the present invention relate to the technical fields of petrochemical and chemical fiber equipment installation. Aiming at the problem that the prefabrication construction operation of the straight pipe section of the existing large-diameter jacketed pipe is relatively complicated and the work efficiency is low. It consists of a flange plate positioning frame, an inner tube positioning component and a number of outer tube positioning components; the adjustment rod set at the bottom of the positioning base can adjust the height of the flange plate; the inner tube positioning component is vertically fixed on the back plate The central rod, the telescopic guide wheel support frame sleeved on the central rod, and the support frame connected to the other end of the central rod, the telescopic guide wheel support frame is composed of a fixed sleeve sleeved on the central rod, along the central rod It is composed of a support rod with uniform radial axis and hinged with the fixed sleeve, and a telescopic bracket with one end hinged with the support rod and the other end connected with the central rod. The other end of the support rod is provided with a guide wheel; the outer tube positioning component includes a detachable Connect the outer tube bracket and the adjustment rod II.
Owner:SHANGHAI INSTALLATION ENG GRP
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