277results about How to "Isolated entry" patented technology

The invention discloses a composite intumescent flame retardant which is composed of the following components in percentage by weight: 50-65% of acid source, 10-20% of gas source, 15-20% of carbon source and 10-20% of smoke inhibitor. The acid source is composed of at least one of ammonium polyphosphate, melamine phosphate and melamine polyphosphate, wherein the ammonium polyphosphate is crystal II ammonium polyphosphate with the average degree of polymerization of greater than 1000; the gas source is composed of at least one of melamine and dicyandiamide; the carbon source is composed of at least one of pentaerythritol and bis pentaerythritol; and the smoke inhibitor is composed of at least one of magnesium hydroxide, aluminum hydroxide and zinc borate. The invention also discloses a preparation method of the composite intumescent flame retardant.

The present invention provides a high power inhibition foam capable of preventing and controlling coal self-combustion and its generation equipment. It is characterized by that the pressure water flow is mixed with high power inhibition foam raw liquor according to a certain ratio, then their mixture is fed into a spray mixer under the action of negative pressure formed by water pressure and gas with a certain pressure in sprayer, and the gas, water and high power inhibition foam raw liquor can be fed into a foaming device by means of spraying mode under the gas pressure so as to make foam formation. Said foam can be used for covering coal body, and can be used for preventing coal self-combustion.

The invention relates to a method for preparing flame-retardant low-smoke halogen-free hot-vulcanized silicone rubber compounds for metro vehicles, which is characterized in that the method comprises the following technological process: adding methyl vinyl silicone rubber to a kneading machine; adding white carbon black and hydroxyl silicone oil; mixing the materials for 1+ / -0.1 hour at a nitrogen-supplying speed of 5+ / -0.1 cubic meter / hour at a temperature between 170 and 190 DEG C; cooling to 60+ / -5 DEG C; adding porcelainizing powder, aluminum silicate, chloroplatinic acid, zinc stannate and aluminum hydroxide; continuing to mix for 0.5+ / -0.05 hour; discharging the materials; filtering rubber in a rubber filter; cooling the obtained product to room temperature; adding 2,5-dimethyl-2,5-bis(tert-butylperoxy) hexane or peroxide bis(2,4-dichloro-benzoyl) serving as a curing agent to an open mill; mixing well; and obtaining the flame-retardant low-smoke halogen-free hot-vulcanized silicone rubber compounds for metro vehicles. As the method adopts halogen-free flame retardant and particularly adopts a porcelainizing smoke-cutting technique, smoke almost completely disappears after the product produced by the method burns for a plurality of minutes, and the inside of the product can be kept in good condition.

The invention relates to a solid fermentation bioreactor. The reactor comprises a reaction casing , and a porous material layer separator plate (5) is arranged in the reaction casing to divide the reaction casing into an upper fermentation chamber (1) and a lower layer air chamber (3); the reactor also comprises a fermentation control system for controlling a stirring unit, a temperature control unit, a humidity control unit, an air feed control unit and a fermentation tail gas detection and processing unit, so as to realize real time monitoring and control on temperature, humidity, ventilation, stirring and tail gas. The invention realizes totally enclosing on-line fermentation and prevents extraneous pollutants from entering; the tail gas detection system carries out real time on-line monitoring on fermentation gas, and tail gas is treated by tail gas recovery equipment to protect the environment, thereby realizing coupling operation of temperature, humidity, ventilation, stirring and tail gas control system and ensuring necessary essential factors for microbe growth.

The invention relates to an inverted-type roofing heat-insulation light plate which is in a double-layer composite structure comprising a mixed mortar surface layer and a light granule material bottomlayer through pouring formation, wherein the material of the mixed mortar surface layer is prepared from cement, fly ash, rough sand, additives and water, and the material forming the light granule bottom layer is prepared from cementing agent, granule material, water reducing agent, foaming agent, waterproof agent and water. The cement agent is prepared from fly ash, cement, calcium carbide ash,salt plaster and excitant. The granule material is polystyrene foaming material. The heat-insulation light plate has good heat insulation, waterproof, anti-leakage and weathering resistance, long service life and no protection layer on the surface, simplifies the construction technology, uses the industrial waste material, and has energy saving, environment protection, low volume weight of the heat-insulation plate and good strength.

The invention discloses a preparation method of a high-molecular material and particularly relates to a preparation method of a halogen-free flame-retarding anti-static polypropylene material. The main formula of the halogen-free flame-retarding anti-static polypropylene material comprises the following materials in parts by weight: 60-90 parts of polypropylene, 40-60 parts of a flame retardant, 2-6 parts of a flame-retarding additive, 5-10 parts of an anti-static agent, 0.05-1 part of an antioxidant and 10-20 parts of filler. The preparation method is characterized in that the anti-static property of the polypropylene material is improved by adopting graphene subjected to surface modification with a silane coupling agent as an anti-static agent. The preparation method disclosed by the invention has the advantages that on one hand, due to ultrahigh conductivity of the graphene, a good conductive channel can be formed in matrix resin by addition of a less amount of the graphene; on the other hand, the graphene subjected to surface modification with the silane coupling agent can be well dispersed in polypropylene, and further the bonding capability of the graphene and the interface of polypropylene is improved.

The invention discloses a preparation method of flame-retardant cellulose fiber through metal ion grafting modification, and belongs to the technical field of flame-retardant textile products. The preparation method comprises the following steps: at first, grafting maleic anhydride to the cellulose fiber macromolecular chain, then modifying the grafted cellulose fiber by metal ion compounds, wherein the introduced carboxyl group can carry out grafting modification with a plurality of metal ions, and finally preparing the flame-retardant cellulose fiber through a common treatment method. The prepared flame-retardant cellulose fiber has an inherent flame-retardant property, an ideal flame-retardant effect can be achieved by using only a little amount of added flame retardant namely the metal ions for grafting, because the flame-retardant cellulose fiber has an inherent flame-retardant property, the conventional flame retardants such as phosphorus flame retardant, nitrogen flame retardant, halogen flame retardant, and the like are not needed, the cellulose fiber will not give off toxic gas during the application process, and the environment pollution generated during the production process and application process of cellulose fiber and the pollution caused by the waste cellulose fiber are reduced.

The invention relates to a multifunctional computer data acquisition device which effectively solves the problems that data information stored in a computer is prone to being stolen and a network cable interface of the computer acquisition device is prone to being contaminated by dust. According to the technical scheme, the method comprises the following steps of: obtaining a solution; a data acquisition host and a standby host are arranged in the box body, and the standby host is electrically connected with a standby network port plugboard which is slidably connected to the bottom wall of thefirst cavity; when a lawbreaker steals information, the lawbreaker can steal the information. if the first password disk is just dialed, the standby host switch and the driving mechanism switch slideout of the second cavity; at the moment, the standby network interface plugboard electrically connected with the standby host slides to the network interface shielding plate under the driving of thedriving mechanism to shield the network interface plugboard on the data acquisition host, so that lawbreakers mistakenly steal information for the standby network interface plugboard, and the information in the data acquisition host is safer. When the device is not used, the keyboard, the network cable interface or the USB interface can be sealed, and external dust is isolated.

The invention discloses a nonferrous mine waste rock storage yard ecological environmental management method. The method comprises the following steps that 1, by means of a slurry spraying machine, apasty neutralization and improvement material is sprayed to the outer surface of a waste rock storage yard, and a neutralization and improvement layer is formed; 2, by means of the slurry spraying machine, a pasty buffer isolation material is sprayed to the outer surface of the neutralization and improvement layer, and a buffer isolation layer is formed; 3, a vegetation recovery layer is formed onthe outer surface of the buffer isolation layer. Accordingly, wet spraying is adopted, a high-concentration mixed material is sprayed by adopting the slurry spaying machine to the waste rock storageyard, and specially for the neutralization and improvement layer, the pasty neutralization and improvement material is better embedded into a gap of an outer surface layer of the waste rock storage yard; compared with existing dry spraying machine spraying, the neutralization and improvement material can be sufficiently embedded, the problem that a large number of gaps are formed does not exist, and therefore due to sufficient embedding, even though the waste rock storage yard deforms slightly, a packing layer is not likely to fail.

The invention discloses a continuous preparation method for bisphenol A-di(diphenyl phosphate). The continuous preparation method for the bisphenol A-di(diphenyl phosphate) comprises a multistage crosslinking reaction process, a continuous phosphorus oxychloride recycling process, a continuous multistage end capping reaction and phenol recycling process, a continuous crude product refining process, and a continuous solvent recycling and filtering process. The BDP is prepared by the continuous processes, the production cost is reduced, the labor intensity of operators is greatly reduced, the labor efficiency is improved, and the product yield is greatly improved, so the lot production quality is stable, and the production is safe and environment-friendly. The yield is improved by 1-1.5%, the color number is improved below 50, and the TPP is controlled to be 1%, and is reduced by 50% compared by an original intermittence device. The high-end customer requirement is satisfied, and the quality index fluctuation of each product is small.

A rear earth lutetium silicate composite environmental barrier coating and a preparing method thereof are disclosed. The composite environmental barrier coating includes a SiC / SiC matrix, a mullite layer and a composite surface layer consisting of Lu2Si2O7 and Lu2SiO5 in a mass ratio of 6:4. The preparing method combining plasma spraying and physical vapor deposition is adopted, and mullite powderhaving a particle size of 18-58 [mu]m and Lu2Si2O7-Lu2SiO5 composite powder having a particle size of 62-105 [mu]m are adopted as raw materials to prepare the mullite layer on the SiC / SiC matrix andthe composite surface layer on the mullite layer in order. The coating prepared by the method has good resistance to water oxygen corrosion at 1723 K, effectively retards generation of cracks and effectively avoids oxidation and performance degradation of the SiC / SiC matrix at high temperatures.

The invention belongs to the field of environment sanitation facilities, and particularly relates to a water collecting type inflaming retarding garbage can. The water collecting type inflaming retarding garbage can comprises a base, the upper end of the base is fixedly connected with a can body, a can cover is rotatably connected into the can body, a water storage cavity is formed in the base, anannular water collecting groove is formed in the upper end of the base, and communicates with the water storage cavity through multiple water conveying channels, multiple water sucking pipes are arranged on the side wall of the can body in a penetrating manner, the input ends of the water suction pipes are attached to the bottom face of the water storage cavity, the output ends of the water suction pipes are arranged on the inner side wall of the can body, multiple Z-shaped air exhaust channels are formed in the inner side wall of the can body, two ends of the Z-shaped air exhaust channels are arranged on the inner and outer side walls of the can body, an annular cavity is formed in the inner side wall of the can body, a piston ring is in sliding seal connection into the annular cavity, and the interior of seal space formed by the lower side wall of the piston ring and the annular cavity is filled with evaporation liquid. Collected rainwater is used for achieving fire extinguishing ofthe garbage can, and the garbage can is energy-saving, environment-friendly, high in speed and capable of avoiding large danger.

The invention discloses a conductive additive and application, a conductive polymer composite material and a preparation method and application thereof, relates to the technical field of polymer nanocomposite materials, and aims to improve the mechanical strength of the conductive composite material and reduce the flammability and melting rate of the conductive composite material. The conductiveadditive at least comprises micro-nano hybrid conductive materials, and the micro-nano conductive materials comprise zero-dimensional conductive materials, one-dimensional conductive materials and two-dimensional conductive materials. The conductive composite material comprises the conductive additive. The conductive additive is used in conductive polymer products.

The invention provides a production system of germanium tetrachloride for optical fiber. The production system of germanium tetrachloride for the optical fiber comprises at least two rectification units. The rectification units are connected with each other in series. Each of the rectification units comprises a rectifying still, a rectifying tower, a primary condensing tower, a secondary condensing tower, a discharging head, a primary exhaust gas absorption device, a secondary exhaust gas absorption device and a exhaust gas treatment device. The secondary exhaust gas absorption device is communicated with the primary exhaust gas absorption device. The exhaust gas treatment device is communicated with the secondary exhaust gas absorption device. The production system of germanium tetrachloride for the optical fiber improves the rectifying purity of the germanium tetrachloride for the optical fiber enormously by arranging a plurality of rectification units and improves the reliability of the sealing and maintains the pressure balance in the system by arranging the primary exhaust gas absorption device and the secondary exhaust gas absorption device and can evacuate the exhaust gas finally produced by the production system through the exhaust gas treatment device by arranging the exhaust gas treatment device.

The invention discloses a flange positioning connecting rod assembly unit for a welding gun anti-collision device. The flange positioning connecting rod assembly unit for the welding gun anti-collision device comprises an anti-collision device body, a positioning connecting rod, a flange plate and a protective cover, wherein three radial positioning pin holes are formed in the flange plate and are evenly distributed on the circumference of a flange, three positioning pin grooves corresponding to the three positioning pin holes in the flange plate are formed in the positioning connecting rod, the included angles of radial center lines of the three positioning pin holes in the flange plate are not equal, the three positioning pin holes in the flange plate are spaced by equal angles in a rotating direction, and the included angle between the three positioning pin grooves in the positioning connecting rod correspond to the included angles between the three positioning pin holes in a one-to-one mode. According to the flange positioning connecting rod assembly unit for the welding gun anti-collision device, the relative positions of the positioning pin holes in the flange plate and the positioning pin grooves in the positioning connecting rod are reset, rapid reset can be achieved, deviation of the rotating direction during resetting is eliminated, in this way, accurate and rapid resetting is guaranteed, and production is conducted smoothly.

The invention discloses a copper-based MOF hydrogel functionalized antibacterial film as well as a preparation method and application thereof. The preparation method comprises the following steps thatfirstly, a natural polymer macromonomer is synthesized, wherein the natural polymer macromonomer is any one or more of a vinyl chitosan derivative, or vinyl chitosan derivative and methacrylic acid esterified gelatin; copper ions are loaded in cross-linked hydrogel of natural polymer-g-N-isopropylacrylamide in the form of copper-based metal organic framework nanoparticles, and the copper-based MOF hydrogel functionalized antibacterial film is prepared by virtue of nucleophilic addition reaction between active groups on the surface of a hydrogel matrix and isocyanate groups on the surface of amodified antibacterial film. According to the antibacterial film and the preparation method thereof, the temperature sensitivity and antibacterial property of the copper-based MOF functionalized hydrogel and the bacterium blocking capacity of the antibacterial film are combined, effective bonding between the antibacterial film and the functionalized hydrogel is achieved through physical and chemical effects, and the antibacterial film has relatively high physical and mechanical properties while having antibacterial and bacteriostatic effects.

The invention discloses a vehicle-mounted camera comprising a lens shell, wherein a mounting groove is formed in a rear end of the lens shell, a groove is formed in the inner side of the notch of themounting groove; a circuit board fixed in the mounting groove and aligned to the lens in the lens shell; and a rear shell welded in the groove in a laser sealing manner. According to the vehicle-mounted camera of the invention, the front shell and the rear shell are welded into an entirety, no additional waterproof component needs to be added, and the external moisture can be completely isolated from entering the main body; and the metal shell can maximally transfer the heat in the module to the outside at all times.

The invention discloses a composite base table assembly, which comprises a substrate, a substrate screw, a base table and a base table screw, wherein the substrate is fixed to a planting body throughthe substrate screw; the base table is arranged on the substrate through the base table screw; the lower part of the base table screw is connected with the upper end of the substrate screw through screw threads. The base table assembly is formed through the substrate, the substrate screw, the base table and the base table screw; the problem of non-adjustable base table position due to different implanting depth of planting bodies can be solved. The substrate is made into a reverse cone frustum structure, and helps the tissue formation in the postoperative healing period; a gum cuff matched with a gum curve of the patient is formed. Through the arrangement of a healing cap, an operation passage is reserved for the subsequent substrate replacement on the premise of isolating the bacteria andpreventing infection; the secondary harm to the gum caused by the substrate replacement is avoided; meanwhile, the entering of the bacteria into the alveoli fossa is effectively avoided.

The invention provides a closed isolation composition applied to the treatment of a gangue hill and an implementation method thereof, and belongs to the technical field of environmental treatment andmine ecological restoration. The closed isolation composition comprises inorganic substances, a polymer, fiber, an additive and water, the weight ratio of the inorganic substances is 20-75%, the weight ratio of the polymer is 0.2-5%, the weight ratio of the fiber is 0.05-5%, the weight ratio of the additive is 0.05-2%, and the weight ratio of the water is 20-75%; the above materials are mixed according to a certain ratio to prepare a mixed slurry, the slurry is sprayed on the surface of the gangue hill for sealing of the gangue hill and isolation from a vegetation area to completely eliminatethe hazard of the gangue hill, and the disturbance influence of vegetation on the gangue hill is eliminated. The closed isolation layer has the advantages of airtightness, seepage resistance, heat insulation, firmness and durability, the used materials are all environmentally friendly, the construction is simple, the efficiency is high, and the cost is low.

The present invention provides a plastic laser front case penetrating welding vehicle-mounted camera, the front case and a rear case are welded together, and no additional waterproof components are needed, and external moisture is completely prevented from entering inside of a body, and overall heat dissipation performance is good, and external electromagnetic interference can be shielded. The vehicle-mounted camera includes the front case, the rear case, a first substrate, and a second substrate. The front case and the rear case are both made of plastic materials, a front end of the front case is fixedly arranged with a front convex lens, an inner groove is disposed on an outer circumference of a rear end surface of a front case side convex for positioning the rear case, and a front end surface of the side convex end corresponding to the inner groove is a plane, and a portion of the rear case facing the inner groove is a bulge for positioning, the first substrate is fixedly installedon a rear substrate mounting member of the front case, the second substrate is fixedly installed on a corresponding substrate mounting member of the rear case, and a first rear end connector of the first substrate is connected to a front end slot of the second substrate.

The invention relates to a charging socket internally equipped with a shielding layer, and particularly relates to a socket for charging of an electric automobile. The socket equipped with the shielding layer for internal grounding comprises a front shell, a rear shell, a first terminal module, a second terminal module and a shielding grounding connection module. The first terminal module and thesecond terminal module which stretch forward are arranged on the rear shell. The front end of the rear shell is provided with the corresponding front shell. The front shell is provided with jacks forplugging of the first terminal module and the second terminal module. The first terminal module and the second terminal module are connected through the shielding grounding connection module. The front shell and the rear shell are connected through bolts or buckles. The first terminal module comprises signal terminals, a grounding terminal and AC high voltage terminals. One side of the grounding terminal is provided with a pair of signal terminals with the grounding terminal acting as the center of circle, and the external side of the grounding terminal is also provided with one or two pairs of AC high voltage terminals.

The invention provides a composite explosion-proof valve, a cover plate assembly and a battery so as to solve the problem that battery combustion or explosion risk still exists in conventional pressure-controlled explosion-proof valves. The composite explosion-proof valve comprises a temperature-controlled explosion-proof membrane and a pressure-controlled explosion-proof membrane, wherein a flameretardant structure is arranged between the temperature-controlled explosion-proof membrane and the pressure-controlled explosion-proof membrane. According to the battery, the cover plate assembly and the composite explosion-proof valve, the temperature-controlled explosion-proof membrane and the pressure-controlled explosion-proof membrane are mounted on the composite explosion-proof valve, andthe flame retardant structure is arranged between the temperature-controlled explosion-proof membrane and the pressure-controlled explosion-proof membrane. Therefore, that composite explosion-proof valve can release / relieve pressure timely when the battery is abnormal, external oxygen is effectively isolated from entering, occurrence of battery combustion and explosion is prevented, and secondarydisaster and larger abnormality are avoided.

The invention discloses a warm gas isolation device of a subway channel. The warm gas isolation device of the subway channel involves the subway channel, the top of one side of the subway channel is provided with an air blower, the air outlet end of the air blower is connected with an air outlet pipe extending along the top of the subway channel, a plurality of air outlets are formed in the lowerend of the air outlet pipe at equal intervals, an electromagnetic valve is installed at the corner of the tail end of the air outlet pipe, fan blades are arranged in the tail end of the air outlet pipe, the fan blades are connected with a connecting shaft, the ground of the subway channel is provided with a drainage groove, the bottom of the drainage groove is connected with a drainage pipe, a notch of the drainage groove is covered with an isolation net, an installation groove is horizontally formed in the inner wall of the drainage groove, the lower end of the connection shaft extends into the installation groove, and the inner wall of the installation groove is rotationally connected with a reciprocating lead screw. The warm gas heat isolation device has the advantages that the structure is reasonable, an air curtain can be formed to isolate the hot gas, the electric energy required by refrigeration of an air conditioner can be reduced, and accumulated water on the isolation net canbe timely sucked away.

The invention discloses a turbofan engine inlet part ice ball collision device and belongs to the technical field of aeronautical facilities. The device comprises a gas storage tank, a locking air cylinder, a cabin inner sliding valve, an ice ball filling emitting cabin, an ice ball emitting pipe, an ice ball supporting rod, an ice ball inlet, a sliding valve groove, an ice ball inlet sliding valve and a handle. An inlet of the ice ball emitting pipe is connected with the ice ball filling emitting cabin. The cabin inner sliding valve and the ice ball supporting rod are arranged in the ice ball filling emitting cabin. The locking air cylinder is arranged outside the ice ball filling emitting cabin and is connected with the cabin inner sliding valve. The ice ball inlet and the sliding valve groove are formed in the same side wall of the ice ball filling emitting cabin. The ice ball inlet sliding valve is arranged in the sliding valve groove. The handle and the ice ball inlet sliding valve are fixedly connected together. Impact force on ice balls is generated by controlling high-pressure gas, so that the ice balls fly to a target at high speed, and the effect of ice ball collision is achieved. The testing device is simple, parts can be easily purchased or machined, the whole device is easy to implement, and cost is low.

The invention discloses a medium-voltage fire-resistant power cable, which comprises a cable core, wherein the cable core is formed by twisting a plurality of wire cores; each wire core comprises a conductor, a shielding layer, an insulating layer and an insulating shielding layer; the shielding layers, insulating layers and the insulating shielding layer are arranged outside the corresponding conductors; each conductor is formed by twisting a plurality of copper core conductors; a thermal insulating layer is also arranged outside each insulating layer; one insulating shielding layer is arranged outside each thermal insulating layer; a metal shielding layer wraps the outside of each insulating shielding layer; a fire-resistant layer is arranged outside each metal shielding layer; the partsamong the plurality of wire cores are filled with fillers; a ceramic fiber tape, an adiabatic cooling layer, a steel tape firestop layer, an oxygen barrier layer, an inner sheath and an outer sheathwrap the outside of the cable core; and the outer sheath wraps the inner sheath through a lubricating layer. The medium-voltage fire-resistant power cable is simple in structure, and has good flame retardant property and fire resistance; the voltage level of the cable is improved on the basis of ensuring the flexibility and the large-length processing performance of the cable; and safe and reliable operation of a power system is ensured.

The invention discloses a method for preparing, storing, using and repairing a battery or a capacitor under a negative pressure. The method is implemented by adopting the technical scheme that: external connection devices of the battery or the capacitor are arranged at one even more positions of a battery or capacitor cavity, and comprise pipelines, valves, meters and the like, and the valves are operated to fulfill the aims of preparing, storing, using and repairing the battery or the capacitor under the negative pressure; the battery or the capacitor and the external connection devices thereof are arranged in an environmental control system of the battery or the capacitor, and are operated to fulfill the aims of preparing, storing, using and repairing the battery or the capacitor under the negative pressure; and the battery or the capacitor is used when the cavity thereof is internally in a negative pressure state. The method is particularly suitable for injecting electrolyte in situ to activate the battery or the capacitor in occasions, such as a using occasion, except a manufacturing plant of the battery or the capacitor into which the electrolyte is not injected to avoid the performance degradation, explosion risks and inconvenience of the battery or the capacitor in transportation and storage.

The invention provides a high-extensibility packaging film. The high-extensibility packaging film comprises a film body, wherein the film body comprises an upper surface layer, a middle layer and a heat-seal layer, the upper surface layer, the middle layer and the heat-seal layer are sequentially stacked and bonded from top to bottom, the thickness of the middle layer is 1-30 microns, and the middle layer is made of aluminum alloy. The invention also provides a production method for producing the high-extensibility packaging film and an external package applying the high-extensibility packaging film. The high-extensibility packaging film has good ductility, and no micro-hole is formed in the rear surface after stretching and extension. By adopting the production method, the bonding of themiddle layer and the upper surface layer and the heat-seal layer is tighter, and thus the bonding strength after bonding of the upper surface layer, the middle layer and the heat-seal layer is improved. The external package can effectively isolate outside air and liquid and thus prevent contained articles in the external package from going bad.

Disclosed is thermostat rotating table shaft system seal design. A thermostat is included, a spindle is arranged at the bottom of the thermostat, a working table face is arranged at the upper end of the spindle, and is connected with a test device, a lower sealing plate is fixed to the upper end of the spindle, a conducting sliding ring is fixed to the lower end of the spindle, a heating disc is fixed to the outer side of the lower end of the spindle, a sealing support is arranged on the outer side of the heating disc, an upper sealing plate is arranged at the upper end of the sealing support, the upper sealing plate and the lower sealing plate are designed to be of a labyrinth structure, a groove of the lower sealing plate is filled with sealing grease, the sealing support is fixed to a frame, the frame is arranged on the outer side of the thermostat, and a sealing ring is arranged between the thermostat and the frame. The design has the beneficial effects of being convenient to mount and debug, stable in performance and low in manufacturing cost, and the service life of a shaft system and the service life of the conducting sliding ring can be prolonged.

The invention discloses a bioreactor system for culturing animal cell in large scale, which comprises: a reactor arranged whole-close magnetic actuator composed of top and bottom bearings, an inner magnetic drive shaft, a combined oar blade groupware, a sealing groove without magnetism to separate outside and inner shaft, an outer alnico, and a lead-magnetic cylinder; a mixing chamber connected to said actuator by pipe line, a gas supply system connected to said chamber by pipe line. This invention isolates the gate that microbe and other pollutants enter into said bioreactor to eliminate pollution chance, and has strong power to satisfy development require.

The invention discloses a preparation method of rock candy processed garlic and aims to solve the problems that the nutritive value is damaged and the taste and flavor are affected due to overhigh salinity and too short immersion time in the garlic pickling process. The preparation method comprises steps as follows: 1), uniform and complete fresh garlic bulbs with the diameter of 3-5 cm are selected and washed for standby application; 2) a saline solution and the fresh garlic bulbs are added to a ceramic container in the weight ratio being 1:1, the concentration of the saline solution is 20%, and the garlic bulbs are immersed for 15-20 days and then taken out; 3), rock candy accounting for 5% of the weight of the garlic bulbs is ground to be powder, the aired garlic bulbs are put in a ceramic vat, the rock candy is scattered once when one layer of garlic bulbs are placed, the vat is sealed after the vat is full, and the rock candy processed garlic can be taken out for eating after 15-30 days. The prepared garlic bulbs taste good, and the nutritive value of allicin is better reserved.