CN101818985A - Novel drying oven and drying method thereof - Google Patents
Novel drying oven and drying method thereof Download PDFInfo
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- CN101818985A CN101818985A CN 201010153736 CN201010153736A CN101818985A CN 101818985 A CN101818985 A CN 101818985A CN 201010153736 CN201010153736 CN 201010153736 CN 201010153736 A CN201010153736 A CN 201010153736A CN 101818985 A CN101818985 A CN 101818985A
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Abstract
The invention relates to drying equipment and discloses a novel drying oven. The novel drying oven comprises an oven shell, an air exhaustion hole, an air inlet, a flat plate and a support used for placing the flat plate, wherein a tray used for placing dried materials is arranged on the flat plate; the flat plate is an air-permeable type flat plate; and an air inlet tube is arranged on a drying box. In the novel drying oven, steam evaporated from wet materials to be dried can be quickly exhausted through an air-permeable structure due to the adoption of the air-permeable type flat plate, and the mass transfer is rapid, so steam pressure of the evaporated steam is lowered, the steam is not easily detained and condensed, and the drying speed is greatly improved; and under the condition of introducing a proper gas such as nitrogen into the air inlet tube, permeable holes can obviously improve the flowing and distribution of the nitrogen in the drying oven, so the steam at all parts of the drying oven can be quickly taken away along with the nitrogen, and the drying speed is further quickened.
Description
Technical field
The present invention relates to a kind of drying equipment and drying means thereof, relate in particular to a kind of novel dried baking oven and drying means thereof.
Background technology
In the dry processing procedure of the chemical substance that can not stir and since material have the thermal sensitivity baking temperature usually can not be too high, or wait to dry the material porous and be difficult to dry characteristic, so usually adopt vacuum drying oven to carry out drying processing.Vacuum drying oven commonly used has some obvious weak points, adopts the sidewall indirect such as traditional laboratory vacuum drying oven, conducts heat slowly under high vacuum condition, and efficient is very low.Though perhaps the heating plate of large scale industry baking oven can directly heat, heating plate is one whole (as shown in Figure 6), and the steam mass transfer and the heat transfer of baking oven the inside all have very big limitation.Steam in delay of flat board or baking oven inwall dead angle or condensation up and down, is difficult to remove easily.For nonaqueous organic gas, handle as the oven dry of organic gas such as ethanol, similar problem is also arranged, and this causes the drying of material not thorough.In order to reach good drying effect, just must improve baking temperature or significantly prolong drying time, but can cause that like this Substance Properties to be dried changes, performance descends or nutritional labeling is decomposed, and improved the consumption of the energy greatly, reduced operating efficiency, this is at medicine, food processing, biologic product, catalyst, agricultural chemicals, essence and flavoring agent, dyestuff, pigment, particularly evident in the industry fields such as health products, daily chemicals.
Summary of the invention
The present invention is directed to the reason of the result of use difference of drying oven in the prior art, the novel dried case and the drying means thereof of a kind of practicality, economy is provided.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
A kind of novel dried case comprises baking oven shell, bleeding point, gas access, flat board, lays dull and stereotyped support, and flat board is provided with the pallet that is used to hold the oven dry thing, and described flat board is the permeability type flat board, has gas inlet pipe on the drying box.The gas that uses the permeability type flat board can allow wet stock to be dried be evaporated is taken away rapidly by ventilating structure, and mass transfer is rapid, has so just reduced the steam pressure of boil-off gas, makes it to be not easy to be detained and condensation, has improved rate of drying greatly.Feed in gas inlet pipe under the condition of the suitable like this gas of nitrogen, air-vent can improve nitrogen flowing and distributing in baking oven significantly, makes the steam of the each several part that baking oven is interior to take away with nitrogen rapidly, has therefore further accelerated rate of drying.
For described permeability type flat board, no matter whether it is with heater, ventilating structure all has above-mentioned function, the gas that can allow wet stock to be dried be evaporated is taken away rapidly by ventilating structure, mass transfer is rapid, has so just reduced the steam pressure of boil-off gas, makes it to be not easy to be detained and condensation, improve rate of drying effectively, and greatly reduced the consumption of the energy; And use the permeability type flat board of having heater, and allow flat board by the interior material of the direct heated tray of heat conduction, can more effectively improve rate of drying, the reduction energy resource consumption is enhanced product performance.
The ventilating structure of permeability type flat board, ventilating structure is air-vent or ventilative stitch, breathe freely bar, gas-permeable nets, the flat board that only need have air permeable effect can reach above-mentioned similar effects, and the size of ventilating structure, quantity, shape are not unique, and only needs and baking oven coupling gets final product.
Be distributed with at least more than one air-vent on the described permeability type flat board, its described air-vent can be round or square or polygon, and the aperture of air-vent is greater than 0.01mm.As preferably, the aperture of air-vent is greater than 0.1mm; More excellent, the aperture of air-vent is greater than 5mm.The size of air-vent, quantity, shape are not unique, and only needs and baking oven coupling gets final product.But the gross area of perforate should be controlled at zone of reasonableness, otherwise can have influence on the efficiency of heating surface of permeability type flat board.This structure helps the heat and mass transfer of all gases in baking oven, solves the delay and the condensation problem of gas, quickens dry materials, reduces energy resource consumption, enhances product performance.
Described gas inlet pipe is connected with gas distribution tube, is distributed with the corresponding aperture of air-vent on several and the permeability type flat board on the gas distribution tube.Gas distribution tube is " O " type, " king " font, sphere of movements for the elephants shape.This structure helps gas that gas inlet pipe enters can enter air-vent on the permeability type flat board uniformly, thereby fully is looped around whole drying box inside.The size of the pore on the gas distribution tube, quantity, shape are not unique, can enter air-vent on the permeability type flat board uniformly as long as help gas that gas inlet pipe enters.
As preferably, described baking oven shell is mounted with safety valve and standby mouthful, and hedging was used when this structure helped baking oven malleation occurs under abnormal conditions.
A kind of drying means of novel dried case, step is as follows:
The first step: open drying box, put into the material that will heat in the pallet on the permeability type flat board in drying box;
Second step:, dull and stereotyped by permeability type then by the oven dry thing in the heat conduction heated tray to the dull and stereotyped heating of permeability type;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, or is taken away rapidly by purge gas, and the oven dry thing in drying box reaches till the criterion of acceptability;
The 4th step: open drying box after the cooling, take out the material of oven dry.
As preferably, the mode to the dull and stereotyped heating of permeability type in above-mentioned second step can be to import a kind of water vapour or hot water or conduction oil or hot gas source by the heat medium inlet directly to heat, and perhaps can be directly by power supply heating permeability type flat board.
In order to accelerate drying rate, the described first step increases the operation that vacuumizes by bleeding point; Perhaps described the 3rd step is increased in the operation that place, gas access, drying box bottom feeds nitrogen or carbon dioxide or inert gas or air; Perhaps two kinds of operations are all carried out;
For the baking oven of more existing indirect, if be inconvenient to use the described type of oven of having the permeability type flat board of heater instead, then can use permeability type flat board of the present invention to improve drying effect, reduce energy resource consumption, enhance product performance.Described a kind of drying means, step is as follows:
The first step: open drying box, put into the material that will heat in the pallet on the permeability type flat board in drying box;
Second step: not to the dull and stereotyped directly heating of permeability type, by the oven dry thing in the thermal source heated tray of baking oven outer casing inner wall;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, or is taken away rapidly by purge gas, and the oven dry thing in drying box reaches till the criterion of acceptability;
The 4th step: open drying box after the cooling, take out the material of oven dry.
As preferably,, increase the operation that vacuumizes by bleeding point in the above-mentioned first step in order to accelerate drying rate; Perhaps described the 3rd step is increased in the operation that place, gas access, drying box bottom feeds nitrogen or carbon dioxide or inert gas or air; Perhaps two kinds of operations are all carried out.
According to technical scheme of the present invention, use permeability type flat board can allow the permeability type flat board by the material in the direct heated tray of heat conduction with heater, significantly reduce the heating-up time, the raising heat transfer rate; The permeability type flat board allows the gas that is evaporated be taken away rapidly by air-vent simultaneously, or taken away rapidly by purge gas, mass transfer is rapid, so just reduced the steam pressure of boil-off gas, make it to be not easy to be detained and condensation, can more effectively improve rate of drying, reduce energy resource consumption, enhance product performance, under the condition that feeds the suitable like this gas of nitrogen, air-vent can improve nitrogen flowing and distributing in the baking oven more significantly, make the steam of the each several part that baking oven is interior to take away with nitrogen rapidly, this has also further accelerated rate of drying, reduces energy resource consumption, enhance product performance, so use the permeability type heated plate can reduce the stoving process temperature effectively, improved drying efficiency, promoted product quality, and can significantly save energy resource consumption, reduce production cost.
Description of drawings
Fig. 1 is the structural representation of a kind of novel evacuated drying box of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the front view of the permeability type flat board of having heater of Fig. 1 inside;
Fig. 4 has the structure enlarged drawing at air-vent position for Fig. 3;
Fig. 5 is the vertical view of Fig. 3;
Fig. 6 is the vertical view of the heated plate in the conventional art.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail, these embodiment are for the people that certain experience is arranged, be easy to make some modifications according to needs separately on this basis, realize concrete separately function, what need statement is, the present invention is not limited to these embodiment described below, and all various variations and modifications of being done according to the present patent application claim all should belong to the covering scope of patent of the present invention.
Embodiment 1
A kind of novel dried case, as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, comprise baking oven shell 1, bleeding point 2, flat board 3, lay dull and stereotyped 3 support 4, described dull and stereotyped 3 are provided with the pallet 5 that is used to hold the oven dry thing, described dull and stereotyped 3 is the permeability type flat board, has gas access 6 on the drying box.Described permeability type is dull and stereotyped for having the flat board of heater 9.
In the said structure, there is gas inlet pipe at 6 places, gas access that the bottom of drying box has, on the permeability type flat board of described long 1320mm, wide 1000mm, be evenly distributed with the circular air-vent 11 that 72 equidistant apertures are 10mm, described gas inlet pipe is connected with a gas distribution tube 8 near an end of permeability type flat board, be distributed with the corresponding aperture of air-vent on several and the permeability type flat board on the gas distribution tube 8, gas distribution tube 8 is " king " font shape, and described baking oven shell is mounted with safety valve and standby mouth.
A kind of drying means of novel dried case, step is as follows:
The first step: open drying box, the pallet on the permeability type flat board in drying box is put into the material that will heat for 5 li, vacuumizes by bleeding point;
Second step: the permeability type flat board is directly heated by import water vapour in the heat medium porch, then by the dull and stereotyped oven dry thing of permeability type by 5 li of heat conduction heated tray;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, feeds nitrogen at place, gas access, drying box bottom simultaneously, and the oven dry thing in drying box reaches till the criterion of acceptability;
The 4th step: open drying box after the cooling, take out the material of oven dry.
Embodiment 2
A kind of novel dried case, as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, comprise baking oven shell 1, bleeding point 2, flat board 3, lay dull and stereotyped 3 support 4, described dull and stereotyped 3 are provided with the pallet 5 that is used to hold the oven dry thing, described dull and stereotyped 3 is the permeability type flat board, have gas access 6 on the drying box, be distributed with several ventilating structures 7 on the described permeability type flat board, ventilating structure 7 can be air-vent, described air-vent is rounded, the aperture of air-vent is 0.01mm, and described permeability type is dull and stereotyped for there not being the flat board of additional heat device 9.Described gas inlet pipe is connected with a gas distribution tube 8 near an end of permeability type flat board, is distributed with the corresponding aperture of air-vent on several and the permeability type flat board on the gas distribution tube 8, and described baking oven shell is mounted with safety valve and standby mouthful.
A kind of drying means of novel dried case, step is as follows:
The first step: open drying box, the pallet on the permeability type flat board in drying box is put into the material that will heat for 5 li;
Second step:, and pass through the oven dry thing of 5 li on the thermal source indirect pallet of baking oven outer casing inner wall to the dull and stereotyped directly heating of permeability type;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, feeds inert gas at place, gas access, drying box bottom simultaneously, and the oven dry thing in drying box reaches till the criterion of acceptability;
The 4th step: open drying box after the cooling, take out the material of oven dry.
A kind of novel dried case, as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, comprise baking oven shell 1, bleeding point 2, flat board 3, lay dull and stereotyped 3 support 4, described dull and stereotyped 3 are provided with the pallet 5 that is used to hold the oven dry thing, described dull and stereotyped 3 is the permeability type flat board, has gas access 6 on the drying box, is distributed with at least one ventilating structure 7 on the described permeability type flat board, ventilating structure 7 is ventilative seam, and described permeability type flat board is the flat board of additional heat device 9.
A kind of drying means of novel dried case, step is as follows:
The first step: open drying box, the pallet on the permeability type flat board in drying box is put into the material that will heat for 5 li;
Second step: directly with power supply heating permeability type flat board, then by the dull and stereotyped oven dry thing of permeability type by 5 li of heat conduction heated tray;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, feeds carbon dioxide at place, gas access, drying box bottom simultaneously, and the oven dry thing in drying box reaches till the criterion of acceptability;
The 4th step: open drying box after the cooling, take out the material of oven dry.
Embodiment 4
A kind of novel dried case, as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, comprise baking oven shell 1, bleeding point 2, flat board 3, lay dull and stereotyped 3 support 4, described dull and stereotyped 3 are provided with the pallet 5 that is used to hold the oven dry thing, described dull and stereotyped 3 is the permeability type flat board, has gas access 6 on the drying box, is distributed with 100 ventilating structures 7 on the described permeability type flat board, ventilating structure 7 is an air-vent, and described permeability type flat board is the flat board of additional heat device 9 not.
A kind of drying means of novel dried case, step is as follows:
The first step: open drying box, the pallet on the permeability type flat board in drying box is put into the material that will heat for 5 li;
Second step:, and pass through the oven dry thing of 5 li on the thermal source indirect pallet of baking oven outer casing inner wall to the dull and stereotyped directly heating of permeability type;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, and the oven dry thing in drying box reaches till the criterion of acceptability;
The 4th step: open drying box after the cooling, take out the material of oven dry.
Embodiment 5
A kind of novel dried case, as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, comprise baking oven shell 1, bleeding point 2, flat board 3, lay dull and stereotyped 3 support 4, described dull and stereotyped 3 are provided with the pallet 5 that is used to hold the oven dry thing, described dull and stereotyped 3 is the permeability type flat board, has gas access 6 on the drying box, is distributed with 1008 ventilating structures 7 on the described permeability type flat board, ventilating structure 7 is an air-vent, and described permeability type flat board is the flat board of additional heat device 9.
A kind of drying means of novel dried case, step is as follows:
The first step: open drying box, the pallet on the permeability type flat board in drying box is put into the material that will heat for 5 li, vacuumizes by bleeding point (2);
Second step: directly heat the permeability type flat board by importing deep fat at the heat medium inlet, dull and stereotyped by permeability type then by the oven dry thing in the heat conduction heated tray;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, and at place, gas access, drying box bottom bubbling air, the oven dry thing in drying box reaches till the criterion of acceptability simultaneously;
The 4th step: open drying box after the cooling, take out the material of oven dry.
The comparative example
With a kind of novel evacuated drying box of the present invention,, do suitable simple and easy processing now, use as the laboratory as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5.Drying box comprises handwheel, vacuum pumping opening 2, heat medium inlet 10, heat medium outlet, flat board 3, the heat medium chuck of baking oven shell 1, closed baking oven shell and lays dull and stereotyped 3 support 4.The heat medium chuck joins together with dull and stereotyped 3; Dull and stereotyped 3 are provided with the pallet 5 that is used to hold the oven dry thing.Dull and stereotyped 3 is the permeability type flat board, and the bottom of drying box has a gas inlet pipe 6, permeability type dull and stereotyped long 400mm, wide 350mm; Be distributed with 20 equidistant air-vents 7 above, described air-vent is circular, and the pore size of air-vent is 16mm, and gas inlet pipe 6 is near the permeability type flat board.
A kind of drying means of novel evacuated drying box, step is as follows:
The first step: open drying box, it is 62.87% wet activated-carbon catalyst powder 250g that the pallet on the flat board 3 in drying box is put into the water content that will dry for 5 li;
Second step: bleed by vacuum pumping opening 2, the gas inlet pipe 6 in drying box bottom charges into nitrogen then, bleeds repeatedly and inflates 3 times, and air is finished by displacement in drying box, and the pressure of drying box reaches-0.09 MPa;
The 3rd step: continue to bleed by vacuum pumping opening 2, maintenance baking oven vacuum state, the saturated vapor by heat medium outlet feeding 0.38MPa heats permeability type flat board 3 by saturated vapor, conducts the oven dry thing of 5 li of heated tray simultaneously by heat;
The 4th goes on foot: continue to bleed by vacuum pumping opening 2, keep the baking oven vacuum state, the gas inlet pipe 6 in the drying box bottom charges into nitrogen simultaneously, and for the ease of comparing, be identical drying time;
The 5th step: open drying box after the cooling, the catalyst that takes out oven dry detects.
Repeat above-mentioned steps, the result of use of dissimilar structure baking ovens is compared, the results are shown in following table 1: table 1
From the data of table 1 gained as can be known:
Use the traditional vacuum baking oven, two sided electrical heating+airtight flat board in experiment 1.1.Through 3 hours heat dryings, consumed energy 3.99 million Jiao, water content still has 57.18%; Experiment 1.2 is on experiment 1.1 catalyst has dried by the fire 3 hours basis, continue to dry by the fire again 3 hours, moisture after the oven dry still has 40.56% at last, and energy consumption this moment has reached 6.80 million Jiao, so with such traditional vacuum baking oven, generally need baking one day or longer time to dry, energy consumption height, efficient are low, very big to the performance impact of catalyst.
Experiment 2.1 and 2.2 be with experiment 1.1 and 1.2 used baking ovens at mode of heating with under all identical situation of other conditions such as nitrogen, use the dull and stereotyped rather than traditional airtight flat board of permeability type.
Can see that result's (moisture 40.56%) of 6 hours of 3 hours result's (moisture 40.37%) of the dull and stereotyped baking of use permeability type and experiment 1.2 bakings is suitable substantially, but one times of saving of time, energy resource consumption also drops to 5.25 million Jiao from 6.80 million Jiao (3.99+2.81=6.80), has descended 22.8%.Illustrate and use the permeability type flat board can allow the gas that is evaporated be taken away rapidly by air-vent, mass transfer is rapid, so just reduced the steam pressure of boil-off gas, make it to be not easy to be detained and condensation, heat transfer rate is also obviously accelerated simultaneously, thereby improved rate of drying and drying efficiency greatly, reduced energy resource consumption, enhanced product performance.
See the efficient of using permeability type flat board of the present invention can obviously improve traditional baking oven from last example.Use flat board and the drying means with heater of the present invention then further to improve drying efficiency, reduced energy consumption, as tested shown in 3,4,5.Experiment 3 all is to adopt the direct-fired airtight flat board of steam with experiment 4 used baking ovens, and other experiment condition is consistent, and only has not towards nitrogen with towards the difference of nitrogen.After dry 3 hours, moisture content is respectively 4.96% and 1.16%.Compare with 1.2 used traditional baking ovens with experiment 1.1, what water content will be low is many.Illustrated and adopted direct-fired flat board to have very significantly effect, can improve rate of drying and drying efficiency, reduced energy resource consumption, enhanced product performance.And, can further improve efficient towards nitrogen or other suitable gas.Moisture content drops to 1.16% from 4.96% (still defective in many application scenarios), and also slightly reduction of energy resource consumption, illustrates that external gas improves significantly to drying effect.
Further improve can the application of the invention the dull and stereotyped and drying means of the permeability type with heater realize.Experiment 54 is compared with experiment, and used baking oven all is to adopt Steam Heating and towards the nitrogen operation, but the permeability type flat boards that use with heater in experiment 5, and the airtight formula flat boards that use with heater in experiment 4.Other experiment condition is consistent.After 3 hours, both water contents are basic equally all to reach requirement (less than 2%), but energy resource consumption drops to 5.00 million Jiao from 6.54 million Jiao, descends 23.5%.Very ironically we find: comparative experiments 1.2 and experiment 2.1, and when using traditional baking oven, use permeability type dull and stereotyped than using airtight formula flat board (40%) energy consumption when same water content also to reduce 22.8%.The superiority of this consistent digital proof permeability type flat board of the present invention is no matter which kind of mode of heating baking oven adopts.This is that mass transfer is rapid, has so just reduced the steam pressure of boil-off gas because the permeability type flat board allows the gas that is evaporated be taken away rapidly by air-vent, makes it to be not easy to be detained and condensation; Heat transfer rate is also obviously accelerated simultaneously, thereby has improved rate of drying and drying efficiency greatly, reduces energy resource consumption, enhances product performance.
Can reach a conclusion from above-mentioned a series of contrast experiment: the dull and stereotyped baking oven of employed permeability type with heater of experiment 5 is in the direct heating of steam and have best drying efficiency and effect under the condition of nitrogen operation.Even if under the situation of traditional baking oven indirect, the permeability type flat board also is that traditional baking oven is had to a great extent improvement.This mainly is owing to use the permeability type flat board, can allow dull and stereotyped by the material in the direct heated tray of heat conduction, also can allow the gas that is evaporated be taken away rapidly by air-vent, mass transfer is rapid, so just reduced the steam pressure of boil-off gas, make it to be not easy to be detained and condensation, heat transfer rate is also obviously accelerated simultaneously, can improve rate of drying greatly.Under the condition that feeds the suitable like this gas of nitrogen, air-vent can improve nitrogen flowing and distributing in the baking oven more significantly, makes the steam of the each several part in the baking oven to take away with nitrogen rapidly, and this has also further accelerated rate of drying.
That is to say that type of oven of the present invention is compared with the traditional vacuum baking oven,, and on efficient of drying and effect, all obviously have very big advantage not only in energy resource consumption.In current energy-saving and emission-reduction, transform mode of economic growth, create under the historical background of low-carbon (LC) life, at medicine, food processing, biologic product, catalyst, agricultural chemicals, essence and flavoring agent, dyestuff, pigment, fields such as industrial circle such as health products, daily chemicals and scientific experiment all have boundless popularizing application prospect.
Claims (10)
1. novel dried case, comprise baking oven shell (1), bleeding point (2), flat board (3), lay the support (4) of flat board (3), described flat board (3) is provided with the pallet (5) that is used to hold the oven dry thing, it is characterized in that: described flat board (3) is the permeability type flat board, has gas access (6) on the drying box.
2. a kind of novel dried case according to claim 1 is characterized in that: be distributed with at least one ventilating structure (7) on the described permeability type flat board, ventilating structure (7) can be air-vent, ventilative seam, ventilative bar, gas-permeable nets.
3. a kind of novel dried case according to claim 2 is characterized in that: rounded or the square or polygon of described air-vent, the aperture of air-vent is more than the 0.01mm.
4. a kind of novel dried case according to claim 1 is characterized in that: described permeability type is dull and stereotyped for having the flat board of heater (9).
5. a kind of novel dried case according to claim 1 is characterized in that: described permeability type is dull and stereotyped for there not being the flat board of additional heat device.
6. according to the drying means of the described a kind of novel dried case of claim 1, it is characterized in that: step is as follows:
The first step: open drying box, the material that will heat is put in pallet (5) lining on the permeability type flat board in drying box;
Second step: to the dull and stereotyped heating of permeability type, then by the dull and stereotyped oven dry thing of permeability type by heat conduction heated tray (5) lining;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, and the oven dry thing in drying box reaches till the criterion of acceptability;
The 4th step: open drying box after the cooling, take out the material of oven dry.
7. the drying means of a kind of novel dried case according to claim 6, it is characterized in that: described second step can perhaps directly heat the permeability type flat board for directly heating to the dull and stereotyped heating of permeability type by import water vapour or hot water or conduction oil or hot gas source at heat medium inlet (10) by power supply.
8. the drying means of a kind of novel dried case according to claim 6 is characterized in that: the operation that described first step increase vacuumizes by bleeding point (2); Described the 3rd step is increased in the operation that nitrogen or carbon dioxide or inert gas or air are located to feed in drying box gas access, bottom (6).
9. according to the drying means of the described a kind of novel dried case of claim 1, it is characterized in that: step is as follows:
The first step: open drying box, the material that will heat is put in pallet (5) lining on the permeability type flat board in drying box;
Second step:, and pass through the oven dry thing of thermal source indirect pallet (5) lining of baking oven outer casing inner wall to the dull and stereotyped directly heating of permeability type;
The 3rd step: continue oven dry, the permeability type flat board makes the gas that is evaporated be taken away rapidly by air-vent, and the oven dry thing in drying box reaches till the criterion of acceptability;
The 4th step: open drying box after the cooling, take out the material of oven dry.
10. the drying means of a kind of novel dried case according to claim 9 is characterized in that: the operation that described first step increase vacuumizes by bleeding point (2); Described the 3rd step is increased in the operation that nitrogen or carbon dioxide or inert gas or air are located to feed in drying box gas access, bottom (6), and the other end of described gas access is connected with gas distribution tube (8).
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| CN111578643A (en) * | 2020-06-04 | 2020-08-25 | 天津市元柏生活用品有限公司 | Drying machine capable of automatically detecting moisture after drying |
| CN114508910A (en) * | 2022-01-28 | 2022-05-17 | 河南科技大学 | Box type ventilation drying device and ventilation drying method |
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| CN2328955Y (en) * | 1998-03-06 | 1999-07-14 | 陆仁书 | Exhausted steam intermittent type single board drier |
| JP2001095548A (en) * | 1999-09-30 | 2001-04-10 | Susumu Kiyokawa | Food dryer |
| JP2005241153A (en) * | 2004-02-27 | 2005-09-08 | Hitachi Zosen Corp | Unit for dryer and drying device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972031A (en) * | 2010-10-11 | 2011-02-16 | 利川市汇川现代农业有限公司 | Electric heating oil drying device |
| CN103196282A (en) * | 2013-03-28 | 2013-07-10 | 沈南飞 | Simple household drying box |
| CN103528346A (en) * | 2013-09-18 | 2014-01-22 | 吴江市千千和纺织有限公司 | Drying device used for spinning |
| CN106196926A (en) * | 2016-08-23 | 2016-12-07 | 顾腾博 | A kind of square vacuum desiccator |
| CN108381815A (en) * | 2018-02-09 | 2018-08-10 | 中山市泓溢薄膜科技有限公司 | A kind of raw material drying extrusion device |
| CN108917292A (en) * | 2018-05-16 | 2018-11-30 | 湖南长沙天地人生物科技有限公司 | A kind of drug sensitive test card drying means |
| CN109579446A (en) * | 2018-11-21 | 2019-04-05 | 禹州市天源生物科技有限公司 | A kind of Chinese medicine drying and sterilizing device |
| CN110435185A (en) * | 2019-08-20 | 2019-11-12 | 大同新成新材料股份有限公司 | A kind of fibre reinforced thermoplastic resin based composite material preparation method and preparation facilities |
| CN111578643A (en) * | 2020-06-04 | 2020-08-25 | 天津市元柏生活用品有限公司 | Drying machine capable of automatically detecting moisture after drying |
| CN111578643B (en) * | 2020-06-04 | 2020-12-08 | 山东瑞谱检测技术有限公司 | Drying machine capable of automatically detecting moisture after drying |
| CN114508910A (en) * | 2022-01-28 | 2022-05-17 | 河南科技大学 | Box type ventilation drying device and ventilation drying method |
| CN114508910B (en) * | 2022-01-28 | 2023-08-11 | 河南科技大学 | Box type ventilation drying device and ventilation drying method |
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