69results about How to "Freeze evenly" patented technology

The invention discloses a fan blade anti-icing and deicing system based on air heating. The system comprises a controller, heaters, vent pipes, ice detectors, a temperature and humidity sensor, electric turbochargers and a plurality of blade internal temperature sensors; the temperature and humidity sensor is connected to a fan hub; the ice detectors are connected to fan blades; each vent pipe is arranged on the inner sides of two blade internal supporting framework baffles; the heaters are arranged at the front ends of the vent pipes; the electric turbochargers are arranged at air inlets at the front ends of the heaters; the multiple blade internal temperature sensors are uniformly arranged on the fan blades; and the controller is electrically connected to the temperature and humidity sensor, the ice detectors, the heaters, the electric turbochargers and the blade internal temperature sensors. According to the fan blade anti-icing and deicing system, closed-loop linear control is carried out on the power of the heaters and the turbine rotating speed of the electric turbochargers, and therefore the energy consumption of the system can be reduced, the use cost can be lower, heating can be more uniform, anti-icing and deicing can be effectively realized, and the service life and the performance of the fan blades can be improved.

The invention discloses an MOF (metal-organic frameworks) porous foam material and a preparation method. The preparation method comprises the following steps: adding CMC (carboxyl methyl cellulose) and H2O into a vessel; mechanically stirring to obtain a CMC gel; dissolving trimesic acid into absolute ethyl alcohol; ultrasonically dissolving to obtain a solvent A; dissolving Cu(OAc2) into H2O; then adding glacial acetic acid; ultrasonically to fully dissolve, thereby obtaining a solution B; dropwise adding the solution A to the CMC gel; mechanically stirring; slowly dropwise adding the solution B to the previous solution; continuously stirring until an organic solvent is volatilized; pouring the mixed solution into a Teflon die in which a bevel metal sheet is inserted; sealing; feeding into a vessel in which liquid nitrogen is charged; quickly transferring into a freezing drying machine after rapid freezing; and then moving out to obtain the MOF porous foam material. According to the method, the properties of the pure CMC are improved through BTC; MOF crystals are uniformly dispersed in the mixed solution through the in-situ growth; the ice concentrating freezing method is carriedout, so that the adhesion adsorption capacity and the uniform dispersity of the MOF composite material on a net-shaped structure can be obviously improved, and meanwhile, heavy metal ions in organic wastewater can be removed.

The invention discloses a wood processing treatment integrated system. The system comprises wood sectional acquisition equipment, wood thermal insulation and moisturizing transportation equipment, wood collision preventing storage equipment, automatic temperature-adjusting wood soaking equipment, layered freezing equipment, wood standing and drying equipment, end part oiling sealing equipment andwood section slitting equipment. The invention also discloses the wood processing treatment integrated system and a treatment method thereof. The automation degree is high, wood cannot be damaged, thesystem and the method have broad market competitiveness, the wood quality can be effectively guaranteed, atmosphere pollution is avoided, the production cost is saved, and the production environmentis effectively improved.

The invention discloses a bombay duck liquid nitrogen ultralow temperature quick-freezing device and a quick-freezing fresh-keeping method thereof. The device includes a liquid nitrogen quick-freezer,two parallel vibration rods installed on the liquid nitrogen quick-freezer and a plurality of product freezing frames for quick-freezing of products. Each product freezing frame includes a frame body, a placement plate disposed in the frame body, and a plurality of suspension units arranged on the placement plate. Both ends of all the vibration rods are equipped with vibration motors, all the vibration motors are electrically connected to a master controller of the liquid nitrogen quick-freezer. The placement plate is suspended on the two vibration rods through the suspension units. Accordingto the invention, cleaning, soaking, ultra-low temperature quick-freezing, ice plating, vacuum packaging, cryopreservation and other processes are adopted in order to avoid wrinkling and chapping ofthe fish skin, and at the same time the original condition, color and freshness of bombay duck can be maintained. The vibration rods drive the suspension units and the placement plate to vibrate, so that the bombay duck can be frozen more evenly, and the overall freezing quality of bombay duck can be ensured.

The invention discloses a continuous and quick freezing device for meat. The continuous and quick freezing device for the meat comprises a bedplate, a freezing chamber, air coolers, a motor, a driving wheel, a driven wheel and a conveying belt. The air coolers are arranged in the freezing chamber, the conveying belt is tensioned by the driving wheel and the driven wheel, the driving wheel and the driven wheel are rotationally connected to the bedplate, the driving wheel is driven by the motor, and the conveying belt penetrates through the freezing chamber. A circulation separation plate, a draught fan and a freezing plate are further arranged, the circulation separation plate is arranged in the freezing chamber and used for separating the conveying belt and the freezer, circulation openings are formed in the two sides and the middle of the circulation separation plate, the draught fan is connected in the circulation opening in the middle of the circulation separation plate, and the upper surface of the freezing plate is in contact with the lower surface of the conveying belt. The continuous and quick freezing device for the meat is high in freezing speed and good in freezing effect.

The invention discloses a liquid nitrogen freezing device with a freezing pipe provided with partition plates and a construction method. According to construction adopting a quick rescuing freezing method, soil masses of the freezing section are subjected to water shutoff and reinforcing for using. The freezing device is composed of a joint of the freezing pipe, a liquid supplying pipe and a gas exhausting pipe, the joint of the freezing pipe is composed of a two freezing pipe sections and annular partition plate through welding, deformable elastic supporting bases are arranged on the inner edge of the partition plate at intervals, and it is ensured that the liquid supplying pipe is located in the center of the freezing pipe. Liquid spraying holes are formed in the portions, within a section range needing freezing, of the liquid supplying pipe, sprayed liquid nitrogen is gasified, absorbs heat, and achieves refrigeration in space between every two partition plates, and therefore the freezing wall is formed outside the freezing pipe. Hole formation is not conducted on the portions, within a range not needing freezing, of the liquid supplying pipe, lower gasified nitrogen is exhausted along the liquid supplying pipe and an annular space between every two partition plates, therefore interval freezing of different positions within a freezing depth range is achieved, and the freezing wall required for construction is formed. The freezing pipe construction method is simple, the using amount of liquid nitrogen can be saved, the frost-heave amount is reduced, and the special construction requirement is met.

The invention belongs to the technical field of rail transit, and particularly relates to an intelligent rail vehicle automatic catering trolley. The catering trolley comprises a trolley frame and wheels, and further comprises condensation plates, supporting columns, first shafts, placement boxes, first control units and condensation units. The condensation units and the first control units are arranged, and the first control units and the condensation units are matched with each other, so that on the one hand, the freshness of beverages is improved, the beverages are not likely to go bad, andtherefore the drinking taste of beverages is improved; on the other hand, adjustment can be conducted according to actual needs of beverages, so that the beverages are evenly frozen, and the beveragerefrigerating effect is improved; meanwhile, in the process that the placement boxes move downwards, first air bags are extruded by the placement boxes, the first air bags blow out cold air, and thecold air directly acts on the beverages through first holes, so that the beverage refrigerating efficiency is improved.

The invention provides a double-helix grouting type freezing device and construction method. The double-helix grouting type freezing device comprises a double-helix grouting type freezing pipe, wherein the double-helix grouting type freezing pipe comprises a saline water supply pipe, and an outer pipe sleeving the saline water supply pipe outside; two helical channels are formed between the pipe wall of the saline water supply pipe and the pipe wall of the outer pipe, and separately share the pipe walls with the saline water supply pipe and the outer pipe; one of the helical channels is a saline water helical pipeline; and the other helical channel is a grout helical pipeline. Through the adoption of the double-helix grouting type freezing device and construction method provided by the invention, combination of a grouting and plugging water technology for ground consolidation, and a special artificial freezing construction technology is realized, and the underground pipelines for two construction technologies are arranged in one pipeline, so that the construction method is simplified, and drilling and pipeline cost is reduced.

The invention discloses a tool for bearing liquid nitrogen refrigeration, which includes a liquid nitrogen conveying device, a bearing tool casing, a refrigeration sleeve, a bearing, a rotary base anda measurement observation device, wherein the liquid nitrogen conveying device is connected with the bearing tool casing on the lower side through a liquid conveying pipe; the inner side of the bearing tool casing is connected with the refrigeration sleeve through the liquid conveying device; the refrigeration sleeve is divided into two parts, namely a first refrigeration half pipe and a second refrigeration half pipe respectively; the first refrigeration half pipe and the second refrigeration half pipe are connected through a fixator; a bearing is arranged on the inner side of the refrigeration sleeve; the bottom of the bearing is detachably embedded on the rotary base; the measurement observation device is arranged on the rotary base. According to the invention, a nitrogen device and apressure device of the liquid nitrogen conveying device are used for liquefying nitrogen, and then liquid nitrogen is conveyed by the liquid conveying device to the refrigeration sleeve, then a cooling sprayer is used for uniformly cooling the inner side bearing, and the cooling efficiency is improved.

The invention discloses a continuous rapid refrigerating device for meats, comprising a stand, a refrigerating chamber, air coolers, a motor, a driving wheel, a driven wheel and a conveying belt; the air coolers are arranged in the refrigerating chamber; the conveying belt is tensioned by the driving wheel and the driven wheel both of which are rotatably connected to the stand; the driving wheel is driven by the motor; the conveying belt passes through the refrigerating chamber; the continuous rapid refrigerating device is also provided with a circulating partition plate, a fan and a refrigerating plate; the circulating partition plate is arranged in the refrigerating chamber and is used for partitioning the conveying belt and refrigerators; a circulating hole is formed in each of two sides and the middle of the circulating partition plate; the fan is connected to the inside of the circulating hole in the middle of the circulating partition plate; and the upper surface of the refrigerating plate is in contact with the lower surface of the conveying belt. The continuous rapid refrigerating device for meats, disclosed by the invention, is relatively high in refrigerating speed and good in refrigerating effect.

The invention discloses a cold energy recovery type liquid nitrogen cryogenic quick-freezing fresh-keeping device and method. The cold energy recovery type liquid nitrogen cryogenic quick-freezing fresh-keeping device comprises a material outlet end heat preservation shell body, a material inlet end heat preservation shell body, a spraying system end heat preservation shell body, an air fan end heat preservation shell body, a liquid nitrogen spraying system, a liquid nitrogen flow control system, a conveyer belt system and an air exhaust system. By means of the cold energy recovery type liquidnitrogen cryogenic quick-freezing fresh-keeping device and method, a reverse-flow type liquid nitrogen cryogenic quick-freezing fresh-keeping device or a fair-current type liquid nitrogen cryogenic quick-freezing fresh-keeping device can be formed, fastest freezing is adopted to lock moisture in marine products, damage to cells of the marine products is reduced, so that the texture and color of the marine products are maintained, and the cold energy recovery type liquid nitrogen cryogenic quick-freezing fresh-keeping device is high in universality, convenient to clean and good in heat preservation performance.

The invention provides a production process of calcium levofolinate lyophilized powder for injection. The production process comprises the following steps: (1) adding 40-50-DEG C water for injection in a liquid preparation tank; (2) adding 1 part by mass of mannitol, stirring until dissolving, and keeping the temperature of liquid medicine to 40-50 DEG C; (3) adding 1 part of calcium levofolinateraw medicine, stirring until dissolving, reducing the temperature of the liquid medicine to 20-30 DEG C, regulating pH to 7.8-8.2, and adding the water for injection and setting the volume to 1000 parts; and (4) performing sterilization and filtration, filling and freeze-drying, thereby obtaining the preparation product. Through the adoption of the production process, the impurity level in the finished product can be effectively controlled, so that the calcium levofolinate lyophilized powder is superior to a commercial original drug in the USA.

The invention discloses a static magnetic field assisted liquefied CO2 pulse spouting quick freezing device and a pressurized efficient freezing method, and belongs to the technical field of freezing processing. The quick-freezing device comprises a freezing chamber, a liquid CO2 spraying device, a static magnetic field generating device, a pulse spouting device, a temperature collecting device and a controller, liquefied CO2 is adopted as a freezing medium, the pulse spouting device is matched to enable thick stacked materials to be frozen evenly and quickly, the static magnetic field generating device is matched to assist in freezing, and the size of ice crystals can be reduced. The freezing method comprises the steps of evacuation, precooling, CO2 pressurization, magnetic field-assisted quick freezing and deep freezing. According to the method, CO2 pressurization pretreatment and pulse spouting are combined, the freezing time is remarkably shortened, the ice nucleation process is regulated and controlled, and freezing is uniform. Compared with industrial air blast quick-freezing, the time for the frozen materials to pass through the maximum ice crystal generation zone is shortened by more than 20%, and the ice crystal size of the product is reduced by more than 20%. The juice loss rate of the unfrozen product is reduced by more than 4%.

The invention relates to the technical field of refrigeration device, and particularly relates to an ice making device, a refrigerator and an ice making method. The ice making device comprises an airduct assembly, an ice making assembly and an air guide cover, wherein an ice making box is arranged in the ice making assembly; an air guide plate is arranged in the air guide cover, an inclined section is arranged at the end, facing the ice making box, of the air guide plate, and the inclined section extends in the direction of the upper edge of the side, close to the air guide cover, of the icemaking box; and the air duct assembly communicates with the ice making assembly through the air guide cover. According to the ice making assembly, the air guide plate is arranged in the air guide cover, the inclined section is arranged at the end, facing the ice making box, of the air guide plate, and the inclined section is arranged to extend in the direction of the upper edge of the side, closeto the air guide cover, of the ice making box, so that most of cold air in the air guide cover is guided by the air guide plate and cannot directly blow the water surface in the ice making box, the problem of frosting of the ice making box can be effectively prevented, and the ice making efficiency and the ice making uniformity are guaranteed.

The invention discloses a telescopic belt conveyor. The telescopic belt conveyor comprises a belt and a frame used for supporting the belt conveyor, wherein a telescopic mechanism used for controllingthe belt to stretch out and draw back is arranged at one end of the frame; a sliding connecting block used for assisting the belt in sliding is arranged at the end, away from the telescopic mechanism, of the belt; the other end of the belt is arranged in the telescopic mechanism; a clamping belt used for controlling the sliding connecting block to move is arranged between the telescopic mechanismand the sliding connecting block; and the bottom of the sliding connecting block and the clamping belt are connected in a clamped manner. By the adoption of the technical scheme, through linkage of the belt conveyor and the telescopic mechanism, conveying and positioning can be conducted more accurately, the belt conveyor can be conveyed to a freezer at uniform intervals at the same time, and thefood freezing effect is consistent.

The invention relates to a snowflake machine roller. The snowflake machine roller comprises a roller main body, wherein a chamber is formed in the roller main body; the roller further comprises a drum-shaped rotating shaft and a liquid return pipe; one end of the drum-shaped rotating shaft is closed; the liquid return pipe is inserted into the drum-shaped rotating shaft; the two ends of the drum-shaped rotating shaft are in sealing connection with the two ends of the liquid return pipe; a liquid entering sealing chamber is formed between the drum-shaped rotating shaft and the liquid return pipe; a motor connecting shaft is penetrated through one end of the roller main body; one end of the drum-shaped rotating shaft is inserted into the roller main body and is in rotating connection with an inner end of the motor connecting shaft; a drum-shaped end cover part is penetrated through the other end of the roller main body; the other end of the drum-shaped rotating shaft is inserted into the drum-shaped end cover part; the other end of the drum-shaped rotating shaft extends out of an outer end of the drum-shaped end cover part; at least one refrigerant fluid nozzle is arranged on the drum-shaped rotating shaft; a liquid return nozzle which is communicated with the liquid return pipe is arranged at the closed end of the drum-shaped rotating shaft; the drum-shaped rotating shaft and the drum-shaped end cover part are in rotating connection with each other; a mechanical sealing mechanism is arranged between the drum-shaped rotating shaft and the drum-shaped end cover part.

The invention provides an air-cooling type freezer which comprises a freezer body, a refrigerating system and a forced air circulating cooling system. The forced air circulating cooling system comprises air supply openings, an air return opening, an air channel for connecting the air supply openings with the air return opening, and a fan arranged in the air channel. The air supply openings comprise the first layer air supply openings and the second layer air supply opening. The first layer air supply openings are formed in the upper end of the front side wall and the upper end of the rear side wall correspondingly. The second layer air supply opening is formed in the middle end of the right side wall. The air return opening is formed in the lower end of the right side wall. A basket is suspended above a cold chamber. A basket body of the basket is located below the first layer air supply openings. A space supporting frame is arranged at the lower end of the basket body. The space supporting frame and the second layer air supply opening are located in the same horizontal position. A shelving space supporting frame is arranged on the bottom wall. The shelving space supporting frame and the air return opening are located at the same horizontal position. The freezer has the beneficial effects that the whole uniform freezing effect of the cold chamber is achieved, and the uniform freezing effect is free of the influence of the use habits of users.

The invention belongs to the technical field of processing of deep sea fish products, and particularly relates to a processing method capable of reducing purine of deep sea fish products. Besides, theinvention further provides a processing system capable of reducing purine of deep sea fish products. The processing system for the deep sea fish products comprises technological methods of checking and accepting raw materials, performing quenching and unfreezing, removing internal organs, performing washing with water and selection, performing salting treatment, performing quenching once again and performing weighing, performing freezing treatment, sealing boxes with shipping marks and the like. Through adoption of the processing method and processing system for the deep sea fish products disclosed by the invention, the problem that in the prior art, at present, after marine products are processed in China, the purine content is high, so that definite hurt is gradually caused to the kidneys of human bodies is solved, and the processing method and processing system for the deep sea fish products have the beneficial technical effects that the purine content is effectively restrained, grade confusion and level confusion are avoided, fish bodies are high in cleanliness, and iced fresh products are good in quality.

The invention discloses a fresh pepper storage and refrigeration device, and relates to the technical field of refrigeration. The problems that freezing is uneven and pressure is too large are solved.The fresh pepper storage and refrigeration device specifically comprises a refrigerator case, at least two sets of hoisting mechanisms are arranged on the inner wall of the top of the refrigerator case, each set of hoisting mechanism comprises two sets of hoisting assemblies matched with each other, one set of hoisting assembly of each hoisting mechanism is fixedly installed on the inner wall ofthe top of the refrigerator case through a connecting frame, the other hoisting assembly of each hoisting mechanism is connected to the inner wall of the top of the refrigerator case through a connecting assembly, each hoisting assembly comprises a supporting plate and supporting rollers arranged in a rectangular array, the supporting rollers are rotationally connected to the outer wall of the bottom of each supporting plate through rotating shafts, a conveying belt is used on the outer walls of the supporting rollers of each hoisting assembly in a matched mode, and staggered sawtooth bulges are arranged on the outer walls of the two conveying belts which are matched with each other. According to the fresh pepper storage and refrigeration device, fresh peppers are prevented from being superposed to cause overlarge pressure, the side surfaces of the fresh peppers are not superposed, and the freezing is uniform.