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350 results about "Drying" patented technology

Food drying is a method of food preservation in which food is dried (dehydrated or desiccated). Drying inhibits the growth of bacteria, yeasts, and mold through the removal of water. Dehydration has been used widely for this purpose since ancient times; the earliest known practice is 12,000 B.C. by inhabitants of the modern Middle East and Asia regions. Water is traditionally removed through evaporation (air drying, sun drying, smoking or wind drying), although today electric food dehydrators or freeze-drying can be used to speed the drying process and ensure more consistent results.

Drying device suitable for food and food drying method thereof

The invention belongs to a drying device suitable for food. The device comprises a drying chamber, a rotating wheel dehumidification system, a refrigerating system, a heater, a humidifier, a circulating air supply system, a main air path and a control system. The drying chamber, a refrigerating system evaporator, the heater, the humidifier, and a circulating fan are connected by air pipes in order so as to form the main air path. The rotating wheel dehumidification system and the main air path are in parallel connection. A food drying method of the drying device provided in the invention consists of: according to a drying curve and a drying rate curve, adjusting the drying chamber temperature, the relative humidity and the air speed, and comparing an actual water content with a product water content to determine whether ending the drying process. Heating dehumidification, evaporator dewing dehumidification, and adsorbing dehumidification by a rotating wheel dehumidifier are employed to realize drying chamber humidity control. The device has the characteristics of wide temperature and humidity control range, good uniformity, and adjustable air speed, can monitor the weight of a dried material in real time, control the drying process, lower energy consumption, and can be used for drying fruits and vegetables, spices, fish, meat, egg products, gel products or / and cereals.
Owner:HUAZHONG AGRI UNIV

Food processing dryer

The invention discloses a food processing dryer. The food processing dryer comprises a machine body and a discharging device, wherein the machine body is divided into an outer shell and an inner shell; the interior of the machine body is divided into the machine body into a heating chamber formed in the left side of a partition plate and a drying chamber formed in the right side of the partition plate by the separation plate; a vent hole is formed in the partition plate; a filter screen is formed in the vent hole; a feeding opening is formed in the top of the drying chamber; a discharging opening is formed in the right side of a drying box; a stirring device is arranged in the drying chamber; one end of the stirring device is connected with an output shaft of a motor located at the right side of the drying chamber; an air inlet is formed in the left side of the heating chamber. Through the food processing dryer, the discharging device is arranged, so that the food can be automatically discharged out after the food is dried; the trouble of manual operation is eliminated; the food processing dryer is simple and practical; a temperature sensor and a humidity sensor are arranged, so that the temperature and the humidity in the drying chamber can be monitored in time; the food processing dryer is capable of avoiding the breakage of the structure of the food because of over-high temperature.
Owner:蓝玉

Processing device for food drying and packaging

InactiveCN105501480ADry evenlySolve the problem of easy sticking to the bottom wallRotary stirring mixersDrying gas arrangementsProgrammable logic controllerDrying
The invention discloses a processing device for food drying and packaging. The processing device comprises a machine box body and a feeding hopper arranged on the top of the machine box body, wherein the bottom of a weighing chamber is provided with a bottom plate; a pressure sensor is mounted under the bottom plate; the pressure sensor is in signal connection to a PLC (programmable logic controller) control unit; one side of the bottom plate is provided with a material dropping hole; the other side of the bottom plate is provided with a pushing mechanism for pushing food to the material dropping hole; the PLC control unit is in signal connection to the pushing mechanism; the dropping hole is communicated with a drying chamber; one side in the drying chamber is provided with a supporting plate; a fan is mounted on the supporting plate; an electric heater fixed on the supporting plate is mounted in front of the fan; the bottom end of the middle part of the drying chamber is provided with a discharge hole; and a hole sealer mounted on the bottom of the machine box body is arranged under the discharge hole. The invention aims to provide the processing device for food drying and packaging, and the processing device is used for solving the problems of a single function, low production efficiency and high cost of a current food packaging device.
Owner:CHONGQING QINFA FOOD

Energy-saving food drying device with recyclable hot gas

The invention provides an energy-saving food drying device with recyclable hot gas, and belongs to the technical field of processing of foods. The energy-saving food drying device comprises a supporting device and a drying device, wherein a box body is fixedly welded at the middle part of the upper surface of a bottom plate through welding; electric heating pieces are fixedly arranged on the leftside and the right side of an inner cavity of the box body; an electric expansion plate is arranged in the inner cavity of the box body; a fan is arranged on the left side of the inner cavity of a first drying box; an electrical heating rod is arranged on the right side of the fan; a suction blower is fixedly welded to the right side of the upper part of the first drying box; and a filter is arranged on an exhaust pipe. According to the energy-saving food drying device disclosed by the invention, the left end of a moisture absorbing machine is connected with the first drying box through a circulating pipe, so that the energy-saving food drying device has the function of performing dampness removing on waste heat in the box body for cyclic utilization; feeding plates are obliquely arrangedon the inner side of a wind net, so that the energy-saving food drying device has the function that the foods can conveniently fall down to be dried; and the energy-saving food drying device has the characteristics of being simple in structure, high in practicality and good in drying effect.
Owner:ZHENGZHOU AIMOFU INFORMATION TECH CO LTD

Constant-pressure ultrasound atomizing-low-frequency microwave pulse spouting and drying device for conditioning fruits and vegetables, and application of constant-pressure ultrasound atomizing-low-frequency microwave pulse spouting and drying device

The invention relates to a constant-pressure ultrasound atomizing-low-frequency microwave pulse spouting and drying device for conditioning fruits and vegetables and an application of the constant-pressure ultrasound atomizing-low-frequency microwave pulse spouting and drying device, and belongs to the field of a drying and processing technology and mechanical equipment manufacturing of agricultural products and foods. According to the constant-pressure ultrasound atomizing-low-frequency microwave pulse spouting and drying device disclosed by the invention, a suction filter is connected with ablowing machine; the blowing machine is connected with a heat exchanger; the heat exchanger and an ultrasound atomizer are connected with the bottom of a spouted bed dryer through a gas inlet pipe; an interlayer at the lower part of the spouted bed dryer is connected with the heat exchanger through a dehumidifying fan; the spouted bed dryer is also connected with a compressed air storing tank; the compressed air storing tank is connected with an air compressor; the upper end of the spouted bed dryer is connected with a low-frequency microwave source; and the low-frequency microwave source isconnected with a control cabinet. According to the constant-pressure ultrasound atomizing-low-frequency microwave pulse spouting and drying device disclosed by the invention, an ultrasound atomizing,low-frequency microwave and pulse spouted bed combined drying manner is adopted, so that the drying efficiency of conditioned fruits and vegetables is improved, the drying time is shortened, the drying energy consumption is reduced, the drying quality is improved, the problems that high-glucose conditioned fruits and vegetables are adhered and poor in quality when being dried, and time and labor are consumed are solved, and the constant-pressure high-efficiency energy-saving high-quality drying of the conditioned fruit and vegetable materials is realized.
Owner:JIANGNAN UNIV +1

Manufacturing method of nostoc flagelliforme product

The invention belongs to the food drying and processing technical field, and particularly relates to a manufacturing method of a nostoc flagelliforme product. The manufacturing method comprises eight steps of culturing nostoc flagelliforme cells, scalding and blanching, beating to obtain a nostoc flagelliforme cell filtrate, blending, homogenizing, concentrating, sterilizing, and spray-drying. A culture medium added with a soil extraction liquid and a strontium solution with the mass concentration of 2 mg/L is inoculated with the nostoc flagelliforme cells, so that the absorption of the nostoc flagelliforme cells on strontium is greatly promoted, and besides, effects of prevention and treatment of cardiovascular diseases and promotion of human body health are played. With adopting of the spray drying method, the manufacturing method has the advantages of large evaporation area, fast drying speed, low material temperature, and easy continuous production; based on reservation of the material original nutritional organization composition and flavor to a greatest degree, the drying efficiency is greatly improved; and moreover, with utilization of the spray drying method, a nostoc flagelliforme cell slurry can be quickly dried into a powder, the powder collecting rate is high, the damage rate of the composition of the nostoc flagelliforme cells is reduced, and the original nutrients and flavor of the nostoc flagelliforme cells are relatively well maintained.
Owner:HENAN UNIV OF SCI & TECH

Vibrated food microwave drying device

The invention discloses a vibrated food microwave drying device, and belongs to the technical field of food drying. The vibrated food microwave drying device comprises a feeding hopper, a drying box and a discharging pipe; the drying box takes the shape of a horizontal circular truncated cone, and comprises a left bracket, a right bracket and a cylindrical filter screen connected between the leftbracket and the right bracket; a first feeding opening is formed in the top of the right bracket; a small plugging ring body connected to the bottom of the feeding hopper is arranged outside the rightbracket in an attaching manner; a second feeding opening is formed in the top of the small plugging ring body; an upper filter plate arranged in an inclining manner is arranged in the cylindrical filter screen; a first discharging opening is formed in the bottom of the left bracket; a large plugging ring body is arranged outside the right bracket in an attaching manner; a second discharging opening is formed in the bottom of the large plugging ring body; a small stone outlet is formed in the front side of the large plugging ring body; and a lifting plate parallel to the bottom of the drying box is arranged at the bottom of the drying box. The vibrated food microwave drying device can realize periodic and intermittent feeding synchronously, performs fractional separation and separate discharging on stone particles, generates an overturning effect on food, and can generate impact and vibration effects on the drying box.
Owner:哈尔滨土丰农业机械设备有限公司

Preparation method of pucker-free non-cleaning dried jujubes

The invention discloses a preparation method of pucker-free non-cleaning dried jujubes, belongs to the technical field of food drying processing, and relates to a method of carrying out microwave vacuum puffing drying on red dates, aiming at solving the technical problems that jujube skin pucker, surface color darkening, nutritional ingredient loss, and the like appearing in a drying process of the red dates. According to the adopted technical scheme, the preparation method of the pucker-free non-cleaning dried jujubes comprises the following steps: pickling jujubes, grading the jujubes, rejecting defective fruits and impurities in materials; cleaning jujubes; drying water on the surfaces of the red dates by an air knife after cleaning the red dates; pre-drying for 3 hours-6 hours by cold air, regulating moisture of the red dates, and keeping the moisture of the red dates uniform, so that moisture content of the red dates reaches 35%-38%; carrying out microwave vacuum puffing drying on the red dates; spreading materials which are pre-dried by the cold air in a tray of a microwave vacuum unit, exhausting and then reducing pressure, wherein the conditions for carrying out the microwave vacuum puffing drying are as follows: vacuum degree is 65kPa-75kPa, microwave power is 6W/g-10W/g, drying time is 5 minutes-10 minutes, and final moisture content is controlled at 20%-25%.
Owner:交城天娇红农业科技有限公司

Energy-saving control method of twin-stage compression type heat pump vacuum freeze drying combined device

ActiveCN105962005AOptimum evaporating temperatureRun energy savingHeat pumpsFood processingFreeze-dryingDrying
The present invention relates to an energy-saving control method of a twin-stage compression type heat pump vacuum freeze drying combined device. The energy-saving control method of a control system is characterized by comprising the steps that according to the requirements of the food drying processes, temperature T1 of a heating medium entering drying chamber heating division plates is determined; according to the vacuum degree requirements of the combined device and the changes of the thickness of a frost layer on the surface of a water catcher in the operation process of the combined device, a functional expression of the change of an evaporation temperature T4 of the water catcher with an operation time t during the operation process of the combined device is determined; according to the evaporation temperature T4 of the water catcher in a low-pressure stage refrigeration system and a condensing temperature T2 of a high-pressure stage condenser, an optimum intermediate temperature T3 of an intercooler is determined; according to the functional expression of the change of the evaporator temperature T4 of the water catcher with the operation time t, the temperature is realized by adjusting the opening degree of a low-pressure stage throttle valve and the rotation speed of a low-pressure stage compressor; and according to the calculation of a functional expression, the optimal intermediate temperature T3 of the intercooler is determined and realized by adjusting the opening degree of a high-pressure stage throttle valve and the rotation speed of a high-pressure compressor. The advantages are as follows: the heat supply temperature and heat of the drying chamber can be adjusted, the optimum evaporation temperature of the water catcher can be determined, and the optimum intermediate temperature of the intercooler can be determined, and the combined device is energy-saving in operation.
Owner:SHUNDE POLYTECHNIC
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