33results about How to "There is no hidden danger" patented technology

A blood purification sorbent for antibody removal belongs to the technical field of biomedicine, which consists of the two parts of solid-phase carrier material and a petunidin fixed on the carrier by chemical coupling. The molecular structure of the petunidin is shown as above, wherein, one atom among A, B and C is N, the others are C; n is 0-2. The blood purification sorbent can adsorb the antibody component in plasma and autoantibodies such as rheumatoid factor, antinuclear antibody, etc. in heavy load, has limited nonspecific adsorption to other plasma components such as seralbumin, etc., and also has low preparation cost and stable physicochemical property. The material can be used as adsorption filler of a blood purification device for removing the autoantibody and immune complex in the plasma.

The invention discloses an environment-friendly cold-resistant polyvinyl chloride elastomer composition and a preparation method thereof. The preparation method comprises the following steps: mixing a polyvinyl chloride resin, dialkyl terephthalate, synthetic vegetable oil, polar rubber, nano activated calcium carbonate, a calcium zinc composite stabilizer, a lubricant, an antioxidant and a pigment in a kneader; after the temperature of the mixture reaches 90-100 DEG C, discharging, cooling, and carrying out extrusion granulation on the cooled mixture in a double screw extruder, wherein the Shore hardness of the elastomer composition at -5 DEG C is lower than 80. The elastomer composition has the advantages of excellent low-temperature toughness, high mechanical strength, high thermal aging resistance, environment friendliness, no toxicity, excellent comprehensive properties and the like, and is especially suitable for preparing escalator balance compensation chain sheaths, door / window and vehicle window seals, insulation sheaths of wires and cables and the like.

The invention discloses modified boron-phenolic resin and a preparation method and application thereof. The modified boron-phenolic resin is prepared from, by weight, 65-70 parts of boron-phenolic resin and 50-200 parts of silicate ester and 0.5-2 parts of titanate. The preparation method comprises the steps that silicate ester or titanate are dropwise added into the boron-phenolic resin, and the mixture is mixed to be uniform and reacted at the room temperature for 2-5 h. The modified boron-phenolic resin is still transparent and uniform after being placed at the room temperature for 3 months, no solid matter such as boric acid is separated out, the quality retention rate is also remarkably improved, and the modified boron-phenolic resin can improved product heat stability and fire resistance when used in fire resistance composite materials, functional coatings, an epoxy resin curing agent, a rubber modifying agent and the like. The preparation method is simple, no catalyst is adopted, and the problem that hidden dangers are caused when a catalyst is not thoroughly removed is avoided.

The invention discloses a full-automatic drug sterility inspection enrichment system of a sterile bin and an operation method of the system. The enrichment system comprises a sterile operation car, an automatic operation manipulator and an operation table; the sterile operation car comprises a car base, a wastewater box, a filter containing box and a garbage box are arranged on the car base, filter hole sites are arranged over a water inlet of the wastewater box, a container frame is installed on a support frame arranged on one side of the car base and provided with container containing hole sites used for containing containers of at least one type and at least one operation hole site used for containing a container to be operated, and needle clamping devices are arranged at the corresponding operation hole sites; a clamping mechanism, a peristaltic pump, a pressure detection mechanism and a sealed cutting mechanism are installed on the operation table. Accordingly, the high-efficiency full-automatic drug sterility inspection enrichment process can be achieved in a sterile environment of the sterile bin, artificial participation is not needed, the hidden danger that the sterile environment is manually destroyed does not exist, and the system can be suitable for conducting enrichment operation on bacterium inspection of various kinds of drugs packaged in various kinds of drug bottles or bags.

The invention relates to a cleaning method of simple substance copper scales, belonging to the field of chemical cleaning of boilers in fuel electric plants. The method comprises the following steps: (1) primary copper removal; (2) primary acid cleaning; (3) secondary copper removal; (4) secondary acid cleaning; and (5) tertiary cleaning, wherein the reagent raw materials used in the steps are metered in percentage by mass. The invention thoroughly solves the problem of simple substance copper scale removal. By using the method, the scale removal rate is up to more than 99%; and the inventionensures the safety in production, and does not have hidden danger.

The invention discloses an aluminum cell side conductive cathode structure for reducing a horizontal current of molten aluminum. The horizontal current in the molten aluminum can be greatly reduced through installing and using a horizontal or inclined conductive side cathode steel rod. A structure parameter of a cathode is determined according to an actual cell type design, the horizontal current in the molten aluminum can be remarkably reduced when the cathode is applied to the aluminum cell, the distribution of the horizontal current in the molten aluminum is optimized and the cathode voltage drop is reduced, thus the functions of weakening the vertical fluctuation of the molten aluminum and stabilizing the horizontal movement of the molten aluminum are achieved so that an electrolysis can be stably carried out at a low voltage, and the energy consumption is greatly reduced. The aluminum cell side conductive cathode structure is convenient and simple to process, easy to realize, low in cost and little in influence on service life of an inner linear of the cell.

The invention discloses a hollow shaft machining method. A bar is machined into a hollow shaft, an annular step is arranged on the outer circle of the hollow shaft, a center through hole is formed in the hollow shaft, and a plurality of vertical through pin holes are formed in the outer circle of the hollow shaft. The hollow shaft machining method comprises following steps: the bar is machined, and the bar is machined into a semi-finished product with the step and the center through hole; the semi-finished product is stably treated so as to release machining stress; the stably-treated semi-finished product is subject to semifinishing; a drill mold for drilling the hollow shaft is adopted to fixedly clamp and drill the semi-finished product subject to semifinishing, and a semifinishing product with the step, the center through hole and multiple small holes is formed; the semifinishing product is subject to nitrogen treatment, and the semifinishing finished product subject to nitrogen treatment is subject to finishing, and the hollow shaft is formed. The hollow shaft machining method is low in machining cost, high in yield and short in machining period.

The invention provides a hollow fiber nanofiltration membrane based on epsilon-polylysine and a preparation method of the hollow fiber nanofiltration membrane. The hollow fiber nanofiltration membrane based on epsilon-polylysine adopts a hollow fiber membrane as a supporting membrane, and is formed by self-assembling cationic polyelectrolytes and anionic polyelectrolytes containing the epsilon-polylysine layer by layer. The preparation method comprises the following steps: fixing the supporting membrane in a container with a porous supporting layer, allowing the surface of the membrane to face upwards, first pressing, combining and assembling the cationic polyelectrolytes and the supporting membrane to obtain a cationic modification membrane, washing, then pressing, combining and assembling the anionic polyelectrolytes and the cationic polyelectrolytes to obtain an anionic modification membrane, washing, performing heat treatment to obtain a first dual-layer, repeating the foregoing steps to obtain a multilayer modification membrane, finally pressing, combining and assembling the epsilon-polylysine and polyanion electrolyte, and washing to obtain a product. An outermost layer of the hollow fiber nanofiltration membrane is the epsilon-polylysine, so that the antibacterial performance is good, the preparation is simple, the efficiency is high, and the hollow fiber nanofiltration membrane is suitable for actual production.

The invention provides a preparation method of a composite nano-filtration membrane with self-repairing, bacterium-resisting and solvent-resisting functions. The specific method comprises: mixing a transition metal ion solution and a bichelidoxalic acid solution; adjusting the pH (Potential of Hydrogen) value of a mixed system through utilizing a buffering solution; sufficiently stirring to obtain a super-molecular polymer solution; fixing a base membrane in a container with a porous supporting layer and putting a membrane surface upward; adding a cationic polyelectrolyte solution; pressurizing, assembling and washing with water; then adding into the super-molecular polymer solution, and pressurizing, assembling and washing with the water; carrying out heat treatment to obtain a double-layered modified membrane; repeating for 1 to 3 times to obtain a multilayered super-molecular polymer nano-filtration membrane; finally, immersing the multilayered super-molecular polymer nano-filtration membrane into a polylysine solution; pressurizing, assembling and washing with the water; carrying out the heat treatment to obtain the composite nano-filtration membrane with the self-repairing, bacterium-resisting and solvent-resisting functions. The preparation method provided by the invention is simple and efficient; the prepared nano-filtration membrane is high in flux and good in separation effect and also has self-repairing, bacterium-resisting, solvent-resisting and fluorescence performance.

The invention relates to the technical field of sharing locks and especially relates to a sharing lock system. The sharing lock system comprises a power supply, an electromagnetic lock, an MCU (Microprogrammed Control Unit) control module, a communication module, a remote server, an RFID inductor and a power adapter; the MCU control module is used for controlling the electromagnetic lock to unlock / lock; the MCU control module is connected with the remote server through the communication module so as to transmit signals; the MCU control module is in communicating connection with the RFID inductor through RS485 so as to induce the related products; the power supply is used for respectively supplying power to the electromagnetic lock, the MCU control module and the communication module through the power adapter. The sharing lock system is based on network, is intelligent anytime and anywhere, has an encrypted identity ID, is capable of realizing automatic identification, can more safely perform data interaction / communication and management and has a simple structure, low cost, convenience in operation, long service life, use safety, no hidden danger and capability of meeting market requirements.

The invention provides a laboratory intelligent air-exhaust sterilization structure and use method. The laboratory intelligent air-exhaust sterilization structure comprises an air inlet conveying tube, a sterilization filter tube and an air outlet conveying tube, wherein the air inlet conveying tube and the air outlet conveying tube are installed at the two ends of the sterilization filter tube and are provided with seal valves, the sterilization filter tube is internally provided with heaters and is internally and longitudinally provided with a high-efficiency filter, and the heaters and thehigh-efficiency filter are connected with a controller. The laboratory air-exhaust structure provided by the invention is easy to machine, reliable in sterilization and inactivation and easy to use and operate, live bacteria leakage will not appear, after the sterilization and inactivation, a filter element is convenient and safe to replace, filter bacteria filtration and mesh heater sterilizationare simultaneously performed while air supply is performed, and double-stage protection measures of the filter bacteria filtration and high-temperature sterilization are adopted.

The invention relates to an oral fast-dissolving film of a xanthophylls-loaded albumin nanoparticle and a preparation method thereof. The preparation method comprises the following steps: preparing the xanthophylls-loaded albumin nanoparticle from xanthophyll by using an anti-solvent precipitation method and then preparing the oral fast-dissolving film of the xanthophylls-loaded albumin nanoparticle by using a solvent casting method. The film prepared in the invention has an intact surface, no bubble, a uniform color and consistent thickness; drug distribution is uniform; and compared with a xanthophyll bulk drug and an oral fast-dissolving film prepared from the xanthophyll bulk drug, the oral fast-dissolving film prepared in the invention is substantially increased in in-vitro release and in-vivo absorption speeds and degrees and obviously improved in bioavailability.

The invention discloses a urea reducing agent solution for vehicles and belongs to the field of waste gas treatment. The urea reducing agent solution is prepared from the following raw materials in percentage by mass: 20 to 28 percent of urea, 10 to 25 percent of micromolecular amide with less than C3, 1 to 5 percent of glycine, 0 to 10 percent of ammonium hydrogen carbonate or ammonium carbonateand 35 to 68 percent of ultrapure water for balancing total mass percentage. The invention provides the urea solution for vehicles, wherein the solidification point is -24 to -28 DEG C.

The invention discloses a load access detection method and device. The input end of a light receptor of the first bidirectional isolation optocoupler is connected with the direct current terminal, and the output end is connected with the processor module; the first AC terminal is connected with one end of a luminous source of a first bidirectional isolation optocoupler through a first pull-down resistor, and the other end of the luminous source of the first bidirectional isolation optocoupler is connected with a second load access end; the input end of a light receptor of the second bidirectional isolation optocoupler is connected with the direct current terminal, and the output end is connected with the processor module; the first AC terminal is connected with one end of a luminous source of the second bidirectional isolation optocoupler, the second AC terminal is connected with the first load access end through the first divider resistor, and the other end of the luminous source of the second bidirectional isolation optocoupler is connected between the first divider resistor and the first load access end through the first current limiting resistor. When a load is connected, the first bidirectional isolation optocoupler outputs current, the current output by the second bidirectional isolation optocoupler changes, and load connection, short circuit and overcurrent can be detected by detecting the two currents.

The new type of composite aluminum-plastic section bar with inflation structure has aluminum alloy section bar with at least one notch distributed lengthwise distributed, and plastic section bar with raised part in the number and shape corresponding to the notch in the aluminum alloy section bar and several inflatable closed cavities, and is made through connection and pressing. It is used in door and window, and has its aluminum alloy section bar as outer bearing member, and inflated plastic section bar as inner heat insulating and inside decoration member. Outside and inside the closed cavities of plastic section bar, there may be paint or coated reflecting layer. The reasonable combination of aluminum alloy, plastic and air makes the new type of composite section bar high in strength, good in texture, ageing resistant, less deformation, heat insulating, sound isolating and suitable for use in building door and window.

The invention discloses a replaceable sputtering-resistant vacuum cavity for an electric thruster ignition test and an assembly method. The replaceable sputtering-resistant vacuum cavity comprises a vacuum cavity body, sputtering-resistant protection plates, channel steels and a water inlet and outlet pipeline; n sputtering-resistant protection plates are circumferentially and uniformly distributed and spliced to form a structure with an n-sided cross section, the sputtering-resistant protection plates are fixedly connected with the inner wall of the vacuum cavity through channel steel, and the inner wall of the vacuum cavity is a cambered surface. Grooves are machined in the end faces, facing the vacuum cavity, of the steel channels. A cavity formed by closing the grooves and the inner wall of the vacuum cavity is used as a cold water pipeline; the vacuum cavity is provided with a through hole on a wall surface, one end of the water inlet and outlet pipeline is communicated with the cold water flow channel through the through hole in the wall surface of the vacuum cavity, and the other end of the water inlet and outlet pipeline is connected with an external cold water circulationsystem. The replaceable sputtering-resistant heat dissipation device has the advantages of being simple in structure, low in manufacturing cost, low in reliability risk, easy to maintain and the like.

The invention discloses a preparation method of an environment-friendly and cold-resistant polyvinyl chloride elastomer composition. Polyvinyl chloride resin, dialkyl terephthalate, synthetic vegetable oil ester, polar rubber, nano-active calcium carbonate, calcium-zinc Composite stabilizers, lubricants, antioxidants and pigments are mixed in a kneader, and after the temperature of the mixture reaches 90-100°C, the material is discharged and cooled, and then the cooled mixture is placed on a double-stage screw extruder to extrude and granulate The elastomer composition has a Shore hardness of less than 80 at -5°C. The beneficial effect of the present invention is that it has the advantages of excellent low-temperature toughness, high mechanical strength, good heat aging resistance, environmental protection and non-toxicity, and excellent comprehensive performance, and is especially suitable for preparing elevator balance compensation chain sheaths, door and window seals, and electric wires and cables. insulation sheath, etc.

The roll changer includes one frame, one roll connecting mechanism, one traction mechanism, and several parallel elevating mechanisms with height regulation. The roll connecting mechanism is connected through a traction rope to the traction mechanism; and the elevating mechanisms have in the top one V-shaped support block to limit the transverse motion of the roll and one roll shaft for facilitating the traction of the roll, with the roll shaft capable of rotating being set on the elevating mechanism and coaxially with the support block. The present invention has the advantages of high work efficiency, high safety and saving in manpower.

The present invention relates to a spring for a preloaded bearing, in particular a rolling bearing, with an elastomeric core, wherein the elastomer core comprises a support sleeve of a hardenable material is disposed cohesively, and is formed less elastic than the elastomeric core. The present invention also relates to a structural component, which comprises a housing member, a bearing and the spring.

The invention discloses titanium-modified boron-containing phenolic resin as well as a preparation method and application thereof. The titanium-modified boron-containing phenolic resin is prepared from the following raw materials in parts by weight: 65-70 parts of boron-containing phenolic resin and 0.5-2 parts of titanate. The preparation method comprises the following steps that the titanate isdropwise added into the boron-containing phenolic resin, uniform mixing is carried out, and reaction is carried out at room temperature for 2-5 hours so as to obtain the titanium-modified boron-containing phenolic resin. According to the titanium-modified boron-containing phenolic resin as well as the preparation method and application thereof, a modified boron-containing phenolic resin solution is still transparent and uniform after being placed at room temperature for three months, no boric acid and other solid substances are separated out, the quality retention rate is also obviously increased, and the modified boron-containing phenolic resin is used in a flame-retardant composite material, a functional coating, a curing agent for epoxy resin, a rubber modifier and the like, so that thethermal stability and the flame retardancy of a product can be improved; and the preparation method is simple, no catalyst is used, and the hidden danger caused by incomplete removal of the catalystcan be avoided.

The invention discloses an aluminum cell side conductive cathode structure for reducing a horizontal current of molten aluminum. The horizontal current in the molten aluminum can be greatly reduced through installing and using a horizontal or inclined conductive side cathode steel rod. A structure parameter of a cathode is determined according to an actual cell type design, the horizontal current in the molten aluminum can be remarkably reduced when the cathode is applied to the aluminum cell, the distribution of the horizontal current in the molten aluminum is optimized and the cathode voltage drop is reduced, thus the functions of weakening the vertical fluctuation of the molten aluminum and stabilizing the horizontal movement of the molten aluminum are achieved so that an electrolysis can be stably carried out at a low voltage, and the energy consumption is greatly reduced. The aluminum cell side conductive cathode structure is convenient and simple to process, easy to realize, low in cost and little in influence on service life of an inner linear of the cell.

The invention discloses a control method for preventing oil throwing during starting of a multi-connected air conditioning unit. The control method comprises specific steps as follows: a, the front end of an upper U-shaped pipe (1) is connected with an outlet of an oil separator (2); the rear end of the upper U-shaped pipe (1) is connected with the front end of a lower U-shaped pipe (3); the rear end of the lower U-shaped pipe (3) is connected with the lower end of a lengthened vertical pipe (4); the upper end of the lengthened vertical pipe (4) is connected with a first valve port of a four-way reversing valve (5); the bottom of the lower U-shaped pipe (3) and an inlet of a compressor (7) are communicated through an oil return pipeline (6) provided with an electromagnetic valve (8) and capillary pipes; b, the compressor (7) is started, and the electromagnetic valve (8) of the oil return pipeline (6) is opened after the compressor (7) operates for a period of time. According to the method, the operation cost is low, and the hidden danger of liquid impact on the compressor (7) is avoided.

The invention provides an aging accelerating method for solid-state brewed vinegar, and belongs to the technical field of production of brewed seasonings. The aging accelerating method comprises the following steps: adding amino acid and glucose into mature vinegar fermented grains fermented at normal temperature to prepare charged fermented grains, then carrying out heat-preservation thermal reaction by adopting a two-step method, naturally cooling and carrying out cold condensation to slowly condense essence components in the fermented grains, and directionally preparing to obtain aged vinegar fermented grains meeting the style requirement of mature vinegar. The aging accelerating method provided by the invention is simple and practical in technical process; compared with traditional flame vinegar baking in alpine regions, the aging accelerating method provided by the invention is standard, environment-friendly and sanitary in technical process, simple, convenient and feasible in implementation process, coherent and smooth, low in consumption and high in efficiency; and a product meets the specific sensory characteristics of the mature vinegar, namely rich fragrance, sourness, softness and long lasting.

The invention relates to the technical field of gas engines, in particular to an air inlet assembly of a gas engine. The adopted technical scheme is as follows: the air inlet assembly of the gas engine comprises a throttle valve; the throttle valve comprises a vent hole and a valve plate; the valve plate is provided with a rotating shaft; two rotating shaft holes are formed in the side wall of thevent hole; the two ends of the rotating shaft are inserted into the rotating shaft holes respectively; a mechanical sealing device is arranged at the outer end of the rotating shaft hole; a first airinlet is formed in the hole wall of the rotating shaft hole of the throttle valve; the first air inlet is located in the inner side of the mechanical sealing device; and the first air inlet is used for being connected with a compressed air source. High-pressure compressed air is used for conducting air sealing on the rotating shaft hole, air sealing is added on the basis of mechanical sealing ofthe throttle valve, potential safety hazards caused by leakage of mixed air can be avoided, and the throttle valve has the advantages of being good in sealing performance and high in safety.

The invention discloses a full-automatic drug sterility inspection enrichment system of a sterile bin and an operation method of the system. The enrichment system comprises a sterile operation car, an automatic operation manipulator and an operation table; the sterile operation car comprises a car base, a wastewater box, a filter containing box and a garbage box are arranged on the car base, filter hole sites are arranged over a water inlet of the wastewater box, a container frame is installed on a support frame arranged on one side of the car base and provided with container containing hole sites used for containing containers of at least one type and at least one operation hole site used for containing a container to be operated, and needle clamping devices are arranged at the corresponding operation hole sites; a clamping mechanism, a peristaltic pump, a pressure detection mechanism and a sealed cutting mechanism are installed on the operation table. Accordingly, the high-efficiency full-automatic drug sterility inspection enrichment process can be achieved in a sterile environment of the sterile bin, artificial participation is not needed, the hidden danger that the sterile environment is manually destroyed does not exist, and the system can be suitable for conducting enrichment operation on bacterium inspection of various kinds of drugs packaged in various kinds of drug bottles or bags.

The invention provides an auxiliary installation device for a train bottle cable box of a special-shaped train model of a commuter train. According to the auxiliary installation device, wire arrangement operation is more comfortable, faster and safer. The auxiliary installation device comprises a pre-arranging and overturning mechanism, a cable box transferring mechanism and a cable box supporting mechanism which are sequentially used in cooperation. The pre-arranging and overturning mechanism comprises a base. Multiple first wheels are installed below the base. An overturning drive mechanism is installed at the middle portion of the base. An overturning balance mechanism is arranged at each of the two ends of the base. The overturning drive mechanism comprises a transmission case, a handle, a first gear and a second gear. The transmission case is installed on the base. The handle is installed on the transmission case. A power output shaft of the transmission case is in circumferential limiting fit with the first gear, and the first gear is engaged with the second gear. The cable box supporting mechanism comprises a supporting base. Four wheel frames are installed at the lower end of the supporting base. Second wheels are installed on the wheel frames. Multiple supporting sleepers are connected to the supporting base through stand columns, and the supporting sleepers are fixedly connected through sleeper connecting bars.

The invention relates to a cleaning method of simple substance copper scales, belonging to the field of chemical cleaning of boilers in fuel electric plants. The method comprises the following steps: (1) primary copper removal; (2) primary acid cleaning; (3) secondary copper removal; (4) secondary acid cleaning; and (5) tertiary cleaning, wherein the reagent raw materials used in the steps are metered in percentage by mass. The invention thoroughly solves the problem of simple substance copper scale removal. By using the method, the scale removal rate is up to more than 99%; and the inventionensures the safety in production, and does not have hidden danger.

The present invention relates to a spring for a preloaded bearing, in particular a rolling bearing, with an elastomeric core, wherein the elastomer core comprises a support sleeve of a hardenable material is disposed cohesively, and is formed less elastic than the elastomeric core. The present invention also relates to a structural component, which comprises a housing member, a bearing and the spring.