CN208887237U - A kind of underbalance pulse collaboration normal-pressure radio-frequency spouted bed drying device - Google Patents

Abstract

A kind of underbalance pulse collaboration normal-pressure radio-frequency spouted bed drying device belongs to the dry processing technology of agricultural product and food and mechanized equipment manufacturing technology field.The utility model air filter is connect with pressure fan, and pressure fan is connect with heat exchanger；The outlet of the heat exchanger and spouted bed connects, and the import of spouted bed is connect with gas-solid separator, and gas-solid separator is connect with dehumidifier blower, and dehumidifier blower is connect with heat exchanger；The import of the spouted bed is also connect with cooler, and cooler is connect with refrigeration unit and vacuum pump respectively.The utility model replaces traditional heated air drying using normal-pressure radio-frequency spouted bed drying, improves conditioning fruit-vegetable particle drying efficiency, shortens drying time, reduce energy consumption for drying, promote dry products uniformity；Reach conditioning fruit-vegetable even particulate dispersion using underbalance pulse is spouted, solve the adhesion of conditioning fruit-vegetable granular normal-pressure drying process, agglomeration, poor quality and it is time-consuming and laborious the problems such as, reach energy saving 40% or more, 90% or more the uniformity, realizes the energy-efficient high-quality drying of conditioning fruit-vegetable granular normal-pressure.

Description

A kind of underbalance pulse collaboration normal-pressure radio-frequency spouted bed drying device

Technical field

The utility model relates to a kind of underbalance pulses to cooperate with normal-pressure radio-frequency spouted bed drying device, be suitable for various high viscosities The high-quality dry processing of material high-efficiency, belongs to the dry processing technology of agricultural product and food and mechanized equipment manufacturing technology field.

Background technique

Current agricultural product and food constant pressure and dry processing technology and equipment manufacturing relative maturity, but there is also low efficiencys, product The defects of matter is poor, at high cost and heavily contaminated.Using microwave, infrared and radio frequency etc. efficiently physical combination convective airflow drying technology and Equipment is an important directions for promoting conventional atmospheric agricultural product and food drying processing technology.Microwave and radio frequency combining hot air drying It is dry to increase dry materials Mass and heat transfer efficiency, rate of drying is improved, shortens drying time, achievees the purpose that energy-efficient. But microwave and RF assistance heated-air drying key technology difficulties, the product such as that there are product dryings is uneven, quality deterioration is serious The uniformity is only 50%-60%, and the cost handled again greatly improves.In addition, non-fried conditioning food has become snack food The important trend of processing industry development.Due to conditioning food baste sugared content with higher, cause the adhesion of drying process product, Agglomeration, percentage of damage height, quality deterioration, it is time-consuming and laborious the problems such as.In recent years, dehydrated food and snack food export competition be increasingly There are tight demand in fierceness, international market to the dried foods of high-quality, low cost.In addition, the situation is tense for atmosphere pollution both at home and abroad, Also challenge is proposed to the low-carbon green drying of food.The study found that radio frequency compared with microwave, has penetration capacity strong, product Uniform drying, device structure is simple and the advantages such as production capacity height are processed in drying.The present invention passes through underbalance pulse technology, radio frequency heating skill The fusion of the multiple technologies such as art and pulse spouted bed drying technology, both solves conditioning agricultural product and food drying process adhesion problems, Improve drying uniformity, and conditioning products drying efficiency and production capacity can be improved.Compared with traditional heated air drying, the present invention, which improves, to be produced The dry finished product uniformity of product reaches 90% or more, and drying time shortens 50% or more, and agricultural product and food are realized in 40% or more energy conservation Really efficient, energy conservation, green, low cost and high-quality drying.

Pan Leiqing, He Xinyi, Yin Xu, Tukon, forest rent is loyal, and Zhu Jinxing (2017) discloses " half-dried for producing apple The drying device of piece " utility model patent (number of patent application CN201621401053.5).The device is done by gas jet impact Dry device and hot wind auxiliary radio-frequency seasoning device are constituted, and be can be improved product quality, are reduced nutrient component damages.But the dress It sets product during radio-frequency seasoning and there was only plane motion, be difficult to solve dry products homogeneity question.In addition, the patent is suitble to The fruit and vegetable food for not needing conditioning liquid pretreatment or low sugar conditioning liquid is dry, for the high pretreated apple flakes of sugar, the patent Product adhesion and agglomeration problems are not can solve.Present invention be distinguished in that cooperateing with normal-pressure radio-frequency spouted bed using underbalance pulse Integrated drying device realizes fruit and vegetable dryness product uniformity, solves the problems, such as the adhesive of high sugared conditioning fruit-vegetable dry products.

Liu Qizhong, Shen Yanqian, Wang Lei (2014) disclose a kind of " radio-frequency seasoning device " utility model patent (patent Shen It please number CN201320589984.2).The device by several radio-frequency seasoning casees, multilayer power electrode plate, radio-frequency power detection module, R-f generator, temperature sensor, terminal control unit, central controller are constituted, and can be improved dry materials speed and production capacity.But It is that when carrying out dry materials using the device, dried material remains static in the drying process, not can solve dried material Homogeneity question.In addition, the patent not can solve product adhesion, agglomeration problems, be not suitable for high sugar conditioning material.It is of the invention not It is to realize spatial movement during material radio-frequency seasoning using the spouted bed structure of pulse, reach the mesh of evenly drying with place , while normal-pressure radio-frequency spouted bed drying is cooperateed with using underbalance pulse, it is viscous during the high sugar conditioning material constant pressure and dry of solution Even property problem.

It opens Min, Sun Jincai, Zhong Qifeng, Yan Weiqiang (2008) etc. and discloses raising microwave desiccation homogeneity of granular garden stuff Sprouted auxiliary means (number of patent application 200810244418.1).The invention is spouted dry using two class airflow fields progress microwave Dry, water content is below 6% after product drying.But the patent is suitble to not need conditioning liquid pretreatment or low sugar conditioning liquid Fruit and vegetable dryness, for the high pretreated fruits and vegetables of sugar, which is difficult to realize conditioning fruit-vegetable particle space movement and evenly dispersed, Not the problems such as not can solve the adhesion of drying process product, agglomeration.In addition, the patent depth of microwave penetration is low, it is easy to produce dry production The problems such as uneven and dry working ability of product is low.Present invention be distinguished in that using underbalance pulse collaboration normal-pressure radio-frequency spray Dynamic bed is dry, improves conditioning fruit-vegetable particle space movement effects, effectively solves the problems, such as the dry adhesive of conditioning fruit-vegetable；Meanwhile Dry products quality is promoted, increases dry production capacity, reduces energy consumption for drying.

River spring, Sun Fang, grandson are led to (2016), are disclosed " for removing the combined drying method of moisture in fruit " (number of patent application CN201610109806.3).The invention is using heated-air drying, radio-frequency seasoning and the spouted drying of microwave pulse point Processing is dried to fruit in section combined drying technology, improves drying efficiency, reduces product loss, it is dry to be applicable in high-carbohydrate fruit Processing.But the patented drying procedure is complicated, drying equipment linking is difficult, is not suitable for the high sugar conditioning dry processing of dried fruit.This hair It is bright while to use underbalance pulse technology the difference is that using radio frequency spouted bed integration drying equipment, improve conditioning fruit Vegetable spatial movement effect effectively solves the adhesion problems during fruit and vegetable dryness, is suitble to the high dry processing of sugared conditioning fruit-vegetable；Together When, the present invention can also promote dry products quality, increase dry production capacity, reduce energy consumption for drying.

Liu's bright red, Li Xin, Xie Yongkang, Zhang Yue, Liao Qian disclose " a kind of non-fried yacon crisp chip and its processing method " (number of patent application CN201710317730.8).The patent of invention is using oligofructose, citric acid and salt conditioning liquid to fresh Saussurea involucrata chankings is impregnated, and prepares yacon crisp chip using the hot air combined dry technology of radio frequency, operation simple with processing technology Conveniently, advantage that cost is relatively low.But the invention improves Hemsleyadin and is in static or plane motion shape during radio-frequency seasoning There is uneven drying in state, in addition, the invention is not suitable for high sugar and multilayer conditioning saussurea involucrata chankings is dry.It is of the invention not Be with place using the spouted bed structure alternative transport band structure of pulse, realize during material radio-frequency seasoning from plane motion to The transformation of spatial movement state, achievees the purpose that evenly drying.Meanwhile the present invention is spouted using underbalance pulse collaboration normal-pressure radio-frequency Bed dry technology and device solve the problems, such as the adhesive during high sugared conditioning fruit-vegetable product drying.

Yongkang, Lin Yawen, Zhu Guangfei, Yu Xianlong, Xue Lingyang, Gao Zhenjiang are thanked, Liu's bright red has been carried out based on heating uniformity Radio-frequency seasoning system structure optimization and experimental study (Journal of Agricultural Engineering, 2018,34(5): 248-255).The research uses The method of radio-frequency seasoning combination hot air convection technology and layer-by-layer distribution solves corn seed radio-frequency seasoning thermal migration and corner Effect problem improves radio-frequency seasoning uniformity.Of the invention is a difference in that material carries out in the spouted bed between electrode plate Dry, material evenly drying is realized in material timing spatial movement during radio-frequency seasoning, while normal using underbalance pulse collaboration Injection frequency spouted bed drying technology and device, solve the problems, such as the adhesive in high-viscosity material drying process.

In short, underbalance pulse collaboration normal-pressure radio-frequency spouted bed drying device and energy-efficient High quality processing method, at home There is not yet pertinent literature is reported, this respect paper and patent are not up to the present retrieved yet in foreign countries.The utility model will It is a kind of innovation to agricultural product and the high-quality dry technology of food normal-pressure efficient energy-saving, is filled out to this domestic technological gap It mends.

Summary of the invention

The purpose of the utility model is to overcome above-mentioned shortcomings, provide a kind of underbalance pulse collaboration normal-pressure radio-frequency spouted bed Drying device, realized under underbalance pulse, radio frequency and spouted bed cooperation condition agricultural product and food atmospheric high efficiency, energy conservation, it is low at Originally, green and high-quality drying means and device.

The technical solution of the utility model, underbalance pulse cooperate with normal-pressure radio-frequency spouted bed drying device, including air filtration Device, pressure fan, heat exchanger, gas-solid separator, dehumidifier blower, radio frequency heating chamber, spouted bed, left electrode plate, right electrode plate, production Product collector, cooler, refrigeration unit, vacuum pump and control cabinet；

The air filter is connect with pressure fan, and pressure fan is connect with heat exchanger；The heat exchanger and spouted bed go out Mouth connection, the import of spouted bed are connect with gas-solid separator, and gas-solid separator is connect with dehumidifier blower, dehumidifier blower and heat exchange Device connection；The import of the spouted bed is also connect with cooler, and cooler is connect with refrigeration unit and vacuum pump respectively；

It is intracavitary that the spouted bed is set to radio frequency heating, and spouted bed side is equipped with left electrode plate, and the other side is equipped with right electrode It is intracavitary that plate, left electrode plate and right electrode plate are all set in radio frequency heating；It is connect below the spouted bed with product collector；

It further include control cabinet.

It further include that hydrofuge solenoid valve, normal-pressure solenoid valve, circulating electromagnetic valve, impulse electromagnetic valve, inlet valve, air inlet and discharging are cut Parallel operation, negative pressure solenoid valve, radio frequency pipeline, radio-frequency signal generator；

The heat exchanger is connect by impulse electromagnetic valve and air inlet with the switch that discharges, air inlet with discharge switch with it is spouted The outlet connection of bed；The import of the spouted bed is connect by normal-pressure solenoid valve with gas-solid separator；The import of the spouted bed Also it is connect by negative pressure solenoid valve with cooler；

The dehumidifier blower is connect by hydrofuge solenoid valve with heat exchanger, and dehumidifier blower also passes through circulating electromagnetic valve and pulse Solenoid valve connection；

The right electrode plate is connect by radio frequency pipeline with radio-frequency signal generator；

The control cabinet is connect by circuit with each component.

It further include humiture instrument and fibre optical sensor；Humiture instrument is set in front of the gas-solid separator；The spouted bed Upper setting fibre optical sensor.

It further include observation window；Observation window is set on the radio frequency heating chamber.

The spouted bed structure is cylindrical type, and both ends are closed up, and material is glass, and column part outer diameter is 200-500mm, Wall thickness 5-15mm, high 500-2000mm, two-port flange frosted, port outside diameter 100-300mm, wall thickness 5-12mm, taper angle 30- 60 degree, the high 200-500mm of taper, spouted bed lower side has diameter 1-2mm pore, for installing fibre optical sensor.

The control cabinet is connect with pressure fan, and control cabinet controls start and stop and the revolving speed of pressure fan；Control cabinet and hydrofuge electromagnetism Valve connection, controls the start and stop of hydrofuge solenoid valve；Control cabinet is connect with humiture instrument, for detecting aerial temperature and humidity in spouted bed, Signal is fed back into control cabinet；Control cabinet is connect with normal-pressure solenoid valve, controls the start and stop of normal-pressure solenoid valve；Control cabinet and circulation electricity Magnet valve connection, the start and stop of control loop solenoid valve；Control cabinet is connect with dehumidifier blower, controls start and stop and the revolving speed of dehumidifier blower； Control cabinet is connect with impulse electromagnetic valve, controls the start and stop of impulse electromagnetic valve；Control cabinet and air inlet are connect with discharging switch, into Gas and discharging switch switch over control；Control cabinet is connect with fibre optical sensor, and fibre optical sensor is for detecting in spouted bed Signal is fed back to control cabinet by the temperature of material；Control cabinet is connect with negative pressure solenoid valve, controls the start and stop of negative pressure solenoid valve；Control Cabinet processed is connect with refrigeration unit, controls the start and stop of refrigeration unit；Control cabinet is controlled to a vacuum pump, and controls the start and stop of vacuum pump；Control Cabinet processed is connect with left electrode plate and right electrode plate, controls the distance between left electrode plate and right electrode plate；Control cabinet and radio frequency are sent out Raw device connection, controls start and stop and the power of radio-frequency signal generator.

The material in spouted bed is placed in heat under radio frequency field action between left electrode plate and right electrode plate, in pressure fan and Material moisture is evaporated under the action of dehumidifier blower, material spatial movement and evenly dispersed is realized under the spouted effect of underbalance pulse.

Normal-pressure radio-frequency spouted bed the utility model has the beneficial effects that

1, improve drying efficiency, reduce energy consumption: radio frequency has inner heat source characteristic, and it is dry to realize that wet stock integrally heats It is dry, eliminate heat transfer resistance；Due to the rapid evaporation of material internal moisture, biggish pressure difference is formed inside and outside product, is added Fast moisture evaporation, improves rate of drying, shortens drying time；Meanwhile realizing dry waste heat circulation and recycling, reduce energy damage Consumption.

2, improve the dry products uniformity and working ability: radio frequency is with higher to penetrate energy compared with microwave, infrared Power, radio frequency combination pulse spouted bed drying technology not only improve the material radio-frequency seasoning uniformity, and improve radio-frequency seasoning processing Ability.

3, it promotes dry products quality, reduce labor intensity: product adhesion in traditional high-viscosity material hot-air drying process, Poor quality, large labor intensity merge dry technology with normal-pressure radio-frequency spouted bed using underbalance pulse, realize material in drying process Spatial movement and evenly dispersed, solve high-viscosity material adhesion, agglomeration during traditional heated air drying, be crushed and it is time-consuming with it is laborious The problems such as.

Detailed description of the invention

Fig. 1 is Tthe utility model system structure chart.

Fig. 2 is the utility model circuit connection diagram.

Description of symbols: 1, air filter, 2, pressure fan, 3, heat exchanger, 4, hydrofuge solenoid valve, 5, humiture instrument, 6, gas-solid separator, 7, normal-pressure solenoid valve, 8, dehumidifier blower, 9, circulating electromagnetic valve, 10, impulse electromagnetic valve, 11, inlet valve, 12, radio frequency heating chamber, 13, spouted bed, 14, left electrode plate, 15, right electrode plate, 16, observation window, 17, fibre optical sensor, 18, into Gas and discharging switch, 19, product collector, 20, negative pressure solenoid valve, 21, cooler, 22, refrigeration unit, 23, vacuum pump, 24, radio frequency pipeline, 25, radio-frequency signal generator, 26, control cabinet.

Specific embodiment

As shown in Figure 1, a kind of underbalance pulse cooperates with normal-pressure radio-frequency spouted bed drying device, comprising: air filter 1 is sent Blower 2, heat exchanger 3, hydrofuge solenoid valve 4, humiture instrument 5, gas-solid separator 6, normal-pressure solenoid valve 7, dehumidifier blower 8, circulation Solenoid valve 9, impulse electromagnetic valve 10, inlet valve 11, radio frequency heating chamber 12, spouted bed 13, left electrode plate 14, right electrode plate 15 are seen Examine window 16, fibre optical sensor 17, air inlet and discharging switch 18, product collector 19, negative pressure solenoid valve 20, cooler 21, system Cold group 22, vacuum pump 23, radio frequency pipeline 24, radio-frequency signal generator 25 and control cabinet 26 etc. are constituted.

Air filter 1 is to remove the device for entering impurity in air in spouted bed 13, and the conveying purification air of pressure fan 2 arrives Heat exchanger 3, heat exchanger 3 are the devices of air heating；Hydrofuge solenoid valve 4 controls high temperature and humidity air and exchanges heat through heat exchanger 3 After be discharged, humiture instrument 5 monitor spouted bed 13 in aerial temperature and humidity variation, gas-solid separator 6 separation from spouted bed 13 exhaust in The material of entrainment, dehumidifier blower 8, which conveys, dries humid air to heat exchanger 3 in spouted bed 13, while being transported to spouted bed 13 again again It recycles, it is recycled that the control low-humidity air of circulating electromagnetic valve 9 enters spouted bed 13；Radio frequency heating chamber 12 is that electrode plate is protected Protection unit, left electrode plate 14 and right electrode plate 15 are the devices for generating radiofrequency field；The control of impulse electromagnetic valve 10 enters spouted bed 13 Interior air frequency and inlet period；Normal-pressure solenoid valve 7 controls the work of spouted bed 13 in normal pressure state, the control spray of negative pressure solenoid valve 20 The dynamic work of bed 13 is in negative pressure state；Inlet valve 11 is the entrance that wet stock enters spouted bed 13, spouted bed 13 be material often, negative pressure Radio-frequency seasoning storehouse, observation window 16 control pulse electricity for observing dry materials state in spouted bed, air inlet and discharging switch 18 Magnet valve 10 and product collector 19 and 13 order of connection of spouted bed, air inlet and discharging 18 air inlet of switch are equipped with distribution grid, produce Product collector 19 collects spouted bed drying product by air inlet and discharging switch 18；Cooler 21 connects refrigeration unit 22, uses In being lowered into 23 import humid air temperature of vacuum pump；Radio-frequency signal generator 25 generates radio frequency, is transferred to by radio frequency pipeline 24 Right electrode plate 15, provides the energy of dry materials needs, and control cabinet 26 carries out setting, detection, monitoring and each portion of technological parameter The operation control (specific as shown in Figure 2) of part.

The utility model underbalance pulse is spouted, radio frequency heating, pulse spouted bed drying integration technology improve dry materials effect Rate shortens drying time, reduces energy consumption for drying, promoting drying quality and low-carbon increment drying, and it is dry viscous to solve high-viscosity material Even, the problems such as quality is low and time-consuming and laborious realizes agricultural product and the high-quality drying of food normal-pressure efficient energy-saving.

Claims (6)

1. underbalance pulse cooperates with normal-pressure radio-frequency spouted bed drying device, it is characterised in that: including air filter (1), pressure fan (2), heat exchanger (3), gas-solid separator (6), dehumidifier blower (8), radio frequency heating chamber (12), spouted bed (13), left electrode plate (14), right electrode plate (15), product collector (19), cooler (21), refrigeration unit (22), vacuum pump (23) and control cabinet (26)；

The air filter (1) connect with pressure fan (2), and pressure fan (2) is connect with heat exchanger (3)；The heat exchanger (3) with The outlet of spouted bed (13) connects, and the import of spouted bed (13) is connect with gas-solid separator (6), gas-solid separator (6) and pumping Wet blower (8) connection, dehumidifier blower (8) are connect with heat exchanger (3)；The import of the spouted bed (13) also connects with cooler (21) It connects, cooler (21) is connect with refrigeration unit (22) and vacuum pump (23) respectively；

The spouted bed (13) is set in radio frequency heating chamber (12), and spouted bed (13) side is equipped with left electrode plate (14), another Side is equipped with right electrode plate (15), and left electrode plate (14) and right electrode plate (15) are all set in radio frequency heating chamber (12)；The spray It is connect below dynamic bed (13) with product collector (19)；

It further include control cabinet (26).

2. underbalance pulse cooperates with normal-pressure radio-frequency spouted bed drying device according to claim 1, it is characterised in that: further include row Wet solenoid valve (4), normal-pressure solenoid valve (7), circulating electromagnetic valve (9), impulse electromagnetic valve (10), inlet valve (11), air inlet and discharging Switch (18), negative pressure solenoid valve (20), radio frequency pipeline (24), radio-frequency signal generator (25)；

The heat exchanger (3) is connect by impulse electromagnetic valve (10) with air inlet with discharging switch (18), and air inlet and discharging switch Device (18) is connect with the outlet of spouted bed (13)；The import of the spouted bed (13) passes through normal-pressure solenoid valve (7) and gas-particle separation Device (6) connection；The import of the spouted bed (13) also passes through negative pressure solenoid valve (20) and connect with cooler (21)；

The dehumidifier blower (8) is connect by hydrofuge solenoid valve (4) with heat exchanger (3), and dehumidifier blower (8) also passes through circulation electromagnetism Valve (9) is connect with impulse electromagnetic valve (10)；

The right electrode plate (15) is connect by radio frequency pipeline (24) with radio-frequency signal generator (25)；

The control cabinet (26) is connect by circuit with each component.

3. underbalance pulse cooperates with normal-pressure radio-frequency spouted bed drying device according to claim 1, it is characterised in that: further include temperature Hygronom (5) and fibre optical sensor (17)；Gas-solid separator (6) outlet setting humiture instrument (5)；The spouted bed (13) fibre optical sensor (17) are set on.

4. underbalance pulse cooperates with normal-pressure radio-frequency spouted bed drying device according to claim 1, it is characterised in that: further include seeing Examine window (16)；Observation window (16) are set on the radio frequency heating chamber (12).

5. underbalance pulse described in one of -4 cooperates with normal-pressure radio-frequency spouted bed drying device according to claim 1, it is characterised in that: institute It states control cabinet (26) to connect with pressure fan (2), control cabinet (26) controls start and stop and the revolving speed of pressure fan (2)；Control cabinet (26) with Hydrofuge solenoid valve (4) connection, controls the start and stop of hydrofuge solenoid valve (4)；Control cabinet (26) is connect with humiture instrument (5), control temperature Hygronom (5) is used to detect the temperature and humidity of spouted bed (13) interior air, and signal is fed back to control cabinet (26)；Control cabinet (26) it is connect with normal-pressure solenoid valve (7), controls the start and stop of normal-pressure solenoid valve (7)；Control cabinet (26) is connect with dehumidifier blower (8), Control start and stop and the revolving speed of dehumidifier blower (8)；Control cabinet (26) is connect with circulating electromagnetic valve (9), control loop solenoid valve (9) Start and stop；Control cabinet (26) is connect with impulse electromagnetic valve (10), controls the start and stop of impulse electromagnetic valve (10)；Control cabinet (26) and air inlet It is connect with discharging switch (18), control is switched over to air inlet and discharging switch (18)；Control cabinet (26) and Fibre Optical Sensor Device (17) connection, fibre optical sensor (17) are used to detect the temperature of spouted bed (13) interior material, signal are fed back to control cabinet (26)；Control cabinet (26) is connect with negative pressure solenoid valve (20), controls the start and stop of negative pressure solenoid valve (20)；Control cabinet (26) and refrigeration Unit (22) connection, controls the start and stop of refrigeration unit (22)；Control cabinet (26) is connect with vacuum pump (23), is controlled vacuum pump (23) Start and stop；Control cabinet (26) is connect with left electrode plate (14) and right electrode plate (15), controls left electrode plate (14) and right electrode plate The distance between (15)；Control cabinet (26) is connect with radio-frequency signal generator (25), controls start and stop and the power of radio-frequency signal generator (25).

6. underbalance pulse cooperates with normal-pressure radio-frequency spouted bed drying device according to claim 1, it is characterised in that: described spouted Bed (13) is cylindrical structure, and both ends are closed up, and material is glass, cylinder outer diameter 200-500mm, wall thickness 5-15mm, high 800- 2000mm, two-port flange frosted port outside diameter 100-300mm, wall thickness 5-12mm, taper angle 30-60 degree, the high 100- of taper 500mm。