CN104596207A - Flat plate type vacuum pulsation drying machine - Google Patents
Flat plate type vacuum pulsation drying machine Download PDFInfo
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- CN104596207A CN104596207A CN201510036962.7A CN201510036962A CN104596207A CN 104596207 A CN104596207 A CN 104596207A CN 201510036962 A CN201510036962 A CN 201510036962A CN 104596207 A CN104596207 A CN 104596207A
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Abstract
The invention belongs to the technical field of agriculture product processing, and particularly relates to a flat plate type vacuum pulsation drying machine. The flat plate type vacuum pulsation drying machine comprises a machine body, a control unit, a material drying unit and a pulsation vacuum unit, wherein the material drying unit is provided with multiple layers of material shelves. According to the flat plate type vacuum pulsation drying machine disclosed by the invention, a heating part adopts special electric heating plates, so that the processing is simple and convenient, the cost is low, the heating temperature is uniform, and the manufacturing cost, the using cost and the maintaining cost of the drying machine are greatly reduced; through a hierarchical control mode, corresponding heating plates can be opened according to actual processing amount, so that the energy consumption is reduced; meanwhile, soft material trays are adopted, so that the contact conditions between the material trays and the heating plates are remarkably improved, the quality of dried products can be effectively ensured, and the problem that the soft material trays are inconvenient to move is overcome by using a dedicated material tray shovel to assemble and disassemble the material trays; in addition, the flat plate type vacuum pulsation drying machine belongs to static drying, the breakage of materials cannot be caused; the processing and loading capacity of equipment can be effectively increased by virtue of a multi-layer structure.
Description
Technical field
The invention belongs to technical field of agricultural product process, be specifically related to a kind of plate type evacuated impulse dryer machine.
Background technology
Drying is the important step of processing of farm products.Be different from vacuum drying technique, vacuum impulse drying is the dry technology that a kind of dry room pressure changes according to certain rule periodically pulsing.Contrast test shows, vacuum impulse is dry has higher drying efficiency, shorter drying time and better rehydration compared with vacuum drying, this is because: first, why dry material is, because the steam partial pressure of evaporating surface is greater than the steam partial pressure of dry environment, namely there is barometric gradient in both, and the size of the speed of drying and this barometric gradient is directly proportional.But current vacuum drying technique, often adopt the mode of 1 vacuum or employing pressurize drying in dry run, now, the steam partial pressure on material evaporation surface and the steam partial pressure of dry environment easily reach balance, significantly reduce drying and dehydrating efficiency.And vacuum impulse dry technology, in dry run, periodically switch pressure, constantly break the poised state of moisture evaporation, thus accelerate dry; The second, the pressure fluctuation process in dry run, the duct of extendible material, the duct of material moisture migration when increasing dry, thus accelerate dry, and contribute to the rehydration improving material.
Chinese patent 200810104061.7 discloses a kind of drum-type vacuum impulse dryer machine, and it adopts the mode that hot water (oil) circulates to provide drying source, is mainly used in the good material of mobility.But for the material easily causing breakage (broken) that rolls in dry run, the application of vacuum impulse dry technology is restricted, as sheet materials such as banana chip, jujube sheets, as the berries material of the thin-walleds such as matrimony vine, and the loose material of quality is as Poria cocos block.
Meanwhile, vacuum impulse drying of the prior art adopts the mode of heat medium (water or oil) circulation heating, also there is following remarkable defect:
The first, need weld complicated pipeline, device fabrication cost is high.For improving heat transfer efficiency, heating part often adopts labyrinth type to leak water (oil), and weld seam is many, easily leaks, and more because it is applied in vacuum environment, weld leakiness vacuum, significantly increases difficulty of processing and the processing cost of equipment; Meanwhile, equipment also needs matched with hot water tank, the annexes such as heat-exchanger pump, adds the fringe cost of drying equipment.
The second, energy consumption is high.Complete heat medium circulation, heat medium often needs to reach a certain amount of, is only heated the energy just needing at substantial; Heat medium circulates in complex pipeline, there is a large amount of loss of flood peakes; And be homogeneous heating, heat supply is abundant, and hot water circulating pump needs to run continuously, adds the operation energy consumption of equipment; Meanwhile, when a collection of dry materials terminates, when not carrying out the drying process of lower batch materials continuously, the amount of heat contained in heat medium can run off and waste again.
3rd, heat medium circulating pipe system, blocks after easy fouling, and be difficult to cleaning, once break down, with regard to needing, the heat medium in complex pipeline is poured out rear repair and replacement, it is very inconvenient to safeguard.
4th, be unfavorable for the dynamic regulation of heating-up temperature.Enforcement temperature is dry, is conducive to improving drying efficiency and ensureing product quality, but heat medium thermal capacitance is large, quality is many, heating rate is limited, and cooling is more slow, does not meet novel process requirement dry run being carried out to quick dynamic conditioning.Meanwhile, heat medium heats up slowly, also results in the early stage of drying longer for preheating time, have impact on the whole efficiency of dry run.
In addition, electric boiling plate of the prior art, it take tubular electrothermal element as heater, and brake forming, after entering mould, use metal alloy compositions, by the electric boiling plate of casting of metals, die-casting process.Because metal used of casting has good thermal conductivity, so the distinguishing feature of casting heating plate is heater plate surface homogeneous temperature, but manufacture this heating plate and rely on special equipment, processing technology is complicated, price is high, for the drying equipment of Multi-layer warming, cost is higher, is unfavorable for the cost significantly reducing equipment.
Heat is the basic driver power that material moisture removes.At present, the dry heat transmission of vacuum impulse dry technology is based on heat transfer, and the quality of heat-transfer effect, can greatly affect the efficiency of vacuum impulse drying and the quality of product.At present, dry charging tray many employings metal material makes, and thickness is between 1 ~ 1.5mm, and often because its area is comparatively large and be thin-wall construction, charging tray is difficult to manufacture completely smooth, causes fitting between charging tray and heating surface tightly, and thermal conduction resistance is large; Simultaneously, range of temperature (temperature rise amplitude reaches 20 ~ 60 DEG C) larger in dry run, the collision avoided is difficult in use procedure, also the metal charging tray of hard can be made to produce warpage, the situation such as concavo-convex, produce the phenomenon such as region loose contact, point-like heat conduction, cause dry heat supply deficiency, uneven heating, affect drying efficiency, and produce the uneven problem of dry materials.
Visible, be expand the range of application of vacuum drying technique, the manufacture of effective reduction equipment, maintenance and use cost, it is imperative to solve the problems of the technologies described above.
Summary of the invention
For the material being unsuitable for carrying out rolling in dry run, the object of the present invention is to provide a kind of plate type evacuated impulse dryer machine, can effectively reduce device fabrication, maintenance cost and energy consumption for drying, heat conduction situation when simultaneously can improve drying between charging tray and heating plate, make heat supply fully, uniform drying.
In order to achieve the above object, the invention provides following technical scheme:
A kind of plate type evacuated impulse dryer machine, described plate type evacuated impulse dryer machine comprises body, control unit, dry materials unit and pulse vacuum unit, wherein,
Described body comprises cabinet 4 and chamber door 17, is provided with vacuum sensor port 8, energise heater plate hole 9 and temperature sensor lead hole 10 above described cabinet 4, is provided with aspirating hole 16 and relief hole 3 below described cabinet 4;
Described control unit comprises man-machine interface 12, vacuum-pressure detection and ripple control part and Multi-path electricity temperature of heating plate detects and control section;
Described dry materials unit comprises bed of material support 5, electric boiling plate 6 and the charging tray 7 with sandwich construction, and multiple electric boiling plate 6 layered arrangement is on bed of material support 5, and charging tray 7 is placed on electric boiling plate 6; Described electric boiling plate 6 is flat, comprises the aluminium sheet 21 on upper strata and the electric heating part of lower floor; The sidewall of described aluminium sheet 21 has temperature sensor hole 27, installs temperature of heating plate sensor 28 in temperature sensor hole 27; The wire of described electric boiling plate 6 is through the energise heater plate hole 9 on cabinet 4, and the wire of described temperature of heating plate sensor 28 through the temperature sensor lead hole 10 on cabinet 4, and all to detect with the Multi-path electricity temperature of heating plate of control unit and control section is connected;
Described pulse vacuum unit comprises vavuum pump 20, one way stop peturn valve 19, vacuum transducer 11, pressure release electromagnetic valve 1 and micropore pressure regulating solenoid valve 2, the bleeding point of described vavuum pump 20 is connected by vacuum line 18 with between one way stop peturn valve 19, and the other end of one way stop peturn valve 19 is extended the bleeding point 16 being connected to cabinet 4 by vacuum line 18; Described vacuum transducer 11 is installed in the vacuum sensor port 8 of casing 4; Described pressure release electromagnetic valve 1, micropore pressure regulating solenoid valve 2 are all connected to the relief hole 3 of casing 4 by threeway, described vavuum pump 20, vacuum transducer 11, pressure release electromagnetic valve 1 are all connected with ripple control part with the vacuum-pressure detection in control unit with micropore pressure regulating solenoid valve 2.
Described aluminium sheet 21 thickness is 5 ~ 10mm.
Described electric heating part comprises heating wire 22 and mica layer 23, and wherein, the upper and lower surface of described heating wire 22 lays the mica layer 23 of insulating heat-conductive respectively; The upper surface of described electric heating part fits tightly aluminium sheet 21; The lower surface of described electric heating part and side, wrap up by covering 25.
Described aluminium sheet 21, electric heating part and covering 25 are affixed integral by sunk head rivet 24, and in the junction of covering 25 with aluminium sheet 21, use heatproof fluid sealant 26 to seal.
Described covering 25 is stainless steel.
Described charging tray 7 is made up of food-grade, soft, Heat Conduction Material.
Charging tray shovel 29 for loading and unloading described charging tray 7 comprises dual-handle 30, bar palisade base plate 31, material shovel sidewall 32, top tie rod 33, described bar palisade base plate 31 shovels sidewall 32 with material and fixes as one, described top tie rod 33 shovels sidewall 32 with material and fixes as one, and dual-handle 30 bolt is connected to the side of charging tray shovel 29.
Described cabinet 4 and chamber door 17 are interior outer double-layer structure, and equal fill insulant material 13 between described cabinet 4 and the ectonexine of chamber door 17, be provided with osculum 14 bottom described cabinet 4, the bottom of osculum 14 is connected with draining valve 15.
The pressure detecting range of described vacuum transducer 11 is 0 ~ 100Kpa, described Multi-path electricity temperature of heating plate detects and control section, adopt the temperature of digital PID temperature control technique hierarchical control electric boiling plate 6, the temperature control scope of electric boiling plate 6 is 20 ~ 80 DEG C, temperature-controlled precision ± 1 DEG C.
Compared with prior art, beneficial effect of the present invention is:
1. the static drying of material, can not cause the breakage of material; Sandwich construction improves the processing useful load of equipment effectively; Hierarchical control mode according to actual treatment amount, can open corresponding heating plate, thus reduces energy ezpenditure.
2. heat source adopts special electric boiling plate, and manufacturing process is simple, and do not rely on special equipment, price is low, installs and safeguards and change conveniently; Lay the upper strata aluminium sheet that heat conductivility is good, heating plate heat supply temperature can be made very even, and improve the uniformity of dry materials, the density of aluminium is less simultaneously, compared to other metals, significantly can not increase the weight of heating plate; Only need the heater plate of small size time dry, without complicated energy transferring path, significantly reduce additional-energy loss.Meanwhile, heating plate thermal capacitance is little, and temperature inertness is little, heats up rapidly, improves efficiency during continuous drying operation, and cooling simultaneously fast, is conducive to carrying out rapid temperature rise and drop adjustment according to dry materials situation to baking temperature.
3. heating charging tray employing heat conduction, food grade materials that is soft, thin-walled are made, when being placed on electric boiling plate, can freely stay bottom charging tray, closely to contact with heating plate, when effective improvement adopted hard metal to manufacture charging tray in the past, because charging tray is difficult to the out-of-flatness avoided or convex-concave, the thermal contact resistance caused is large, loose contact, heat supply is not enough and uneven, and the problems such as the drying efficiency caused thus is low, uneven drying.
4. adopt special charging tray shovel handling charging tray, overcome the problem of larger soft charging tray inconvenience handling.
Accompanying drawing explanation
Fig. 1 is the front view of plate type evacuated impulse dryer machine of the present invention;
Fig. 2 is the schematic side view of electric boiling plate of the present invention;
Fig. 3 is the schematic top plan view of electric boiling plate of the present invention;
Fig. 4 is the perspective view of charging tray of the present invention;
Fig. 5 is the perspective view of charging tray of the present invention shovel.
[primary clustering symbol description]
1 pressure release electromagnetic valve
2 micropore pressure regulating solenoid valves
3 relief holes
4 bodies
5 bed of material supports
6 electric boiling plates
7 charging trays
8 vacuum sensor port
9 energise heater plate holes
10 temperature sensor lead holes
11 vacuum transducers
12 man-machine interfaces
13 insulation materials
14 osculums
15 draining valves
16 aspirating holes
17 chamber doors
18 vacuum lines
19 one way stop peturn valves
20 vavuum pumps
21 aluminium sheets
22 heating wire
23 mica layers
24 sunk head rivets
25 coverings
26 fluid sealants
27 temperature sensor holes
28 temperature of heating plate sensors
29 charging tray shovels
30 dual-handle
Article 31, palisade base plate
32 material shovel sidewalls
33 top tie rods
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described further.
Fig. 1 is the front view of plate type evacuated impulse dryer machine of the present invention; Fig. 2 is the schematic side view of electric boiling plate of the present invention; Fig. 3 is the schematic top plan view of electric boiling plate of the present invention; Fig. 4 is the perspective view of charging tray of the present invention; Fig. 5 is the perspective view of charging tray of the present invention shovel.
As shown in Figure 1, plate type evacuated impulse dryer machine of the present invention comprises body, control unit, dry materials unit and pulse vacuum unit.
Described body comprises cabinet 4 and chamber door 17, and cabinet 4 and chamber door 17 are interior outer double-layer structure.Equal fill insulant material 13 between the ectonexine of cabinet 4 and chamber door 17, the effect played the insulation of drying chamber chamber interior walls, reduce condensed water formation, reduce material moisture absorption probability.Vacuum sensor port 8, energise heater plate hole 9 and temperature sensor lead hole 10 is provided with above described cabinet 4.Aspirating hole 16 and relief hole 3 is provided with below described cabinet 4.Be provided with osculum 14 bottom described cabinet 4, the bottom of osculum 14 is connected with draining valve 15.
Described control unit comprises man-machine interface 12, vacuum-pressure detection and ripple control part and Multi-path electricity temperature of heating plate detects and control section.
Described dry materials unit comprises bed of material support 5, electric boiling plate 6 and the charging tray 7 with sandwich construction, and multiple electric boiling plate 6 layered arrangement is on bed of material support 5, and charging tray 7 is placed on electric boiling plate 6.
As shown in Figures 2 and 3, described electric boiling plate 6 is flat, comprises the aluminium sheet 21 on upper strata and the electric heating part of lower floor.Described aluminium sheet 21 thickness is 5 ~ 10mm.Described electric heating part comprises heating wire 22 and mica layer 23, and wherein, the upper and lower surface of described heating wire 22 lays the mica layer 23 of insulating heat-conductive respectively.The upper surface of described electric heating part fits tightly aluminium sheet 21, and the lower surface of described electric heating part and side, wrap up by stainless steel covering 25.Described aluminium sheet 21, electric heating part and covering 25 are affixed integral by sunk head rivet 24, and in the junction of covering 25 with aluminium sheet 21, use heatproof fluid sealant 26 to seal further, play the effect of water-tight.Aluminium sheet 21 lighter in weight on this electric boiling plate 6 upper strata, heat conductivility is good, and the heat supply temperature of electric boiling plate 6 can be made even; Riveting process is easy, can ensure the smooth of electric boiling plate 6 upper surface, prevent charging tray and heating plate Contact bad; Compared to existing casting heating plate processed, this electric boiling plate 6 performance is very nearly the same, but price reduces a lot.
Further, the sidewall of described aluminium sheet 21 has temperature sensor hole 27, installs temperature of heating plate sensor 28, for detecting the temperature of electric boiling plate 6 in temperature sensor hole 27.The wire of described electric boiling plate 6 is through the energise heater plate hole 9 on cabinet 4, and the wire of described temperature of heating plate sensor 28 through the temperature sensor lead hole 10 on cabinet 4, and all to detect with the Multi-path electricity temperature of heating plate of control unit and control section is connected.
As shown in Figure 4, charging tray 7 is made up of food-grade, soft, Heat Conduction Material, adopts food grade silicone material in the present invention.Thin layer soft material can collapse to fit tightly electric boiling plate 6 automatically, thus effectively improves the contact between charging tray 7 and electric boiling plate 6, makes heat more abundant via the transmission of charging tray 7, even, thus improves drying efficiency, improve the uniformity of dry materials.
As shown in Figure 5, use special charging tray shovel 29 to load and unload soft charging tray 7, load and unload to make soft charging tray, mobile more easy.Described charging tray shovel 29 comprises dual-handle 30, bar palisade base plate 31, material shovel sidewall 32 and top tie rod 33, described bar palisade base plate 31 shovels sidewall 32 with material and is welded into one, top tie rod 33 shovels sidewall 32 with material and is welded into one, and dual-handle 30 bolt is connected to the side of charging tray shovel 29.Wherein, dual-handle 30 design makes when the charging tray of mobile large-size shovels 29 more convenient, and bar palisade base plate 31, under the prerequisite of the soft charging tray 7 of satisfied support, can alleviate the weight of charging tray shovel 29, meanwhile, the top tie rod 33 of charging tray shovel 29 is out of shape after can preventing charging tray from shoveling 29 heavy burdens.
Described pulse vacuum unit comprises vavuum pump 20, one way stop peturn valve 19, vacuum transducer 11, pressure release electromagnetic valve 1 and micropore pressure regulating solenoid valve 2.The bleeding point of described vavuum pump 20 is connected by vacuum line 18 with between one way stop peturn valve 19, and the other end of one way stop peturn valve 19 is extended the bleeding point 16 being connected to cabinet 4 by vacuum line 18.Described vacuum transducer 11 is installed in the vacuum sensor port 8 of casing 4, and its pressure detecting range is 0 ~ 100KPa.Described pressure release electromagnetic valve 1, micropore pressure regulating solenoid valve 2 are all connected to the relief hole 3 of casing 4 by threeway.Described vavuum pump 20, vacuum transducer 11, pressure release electromagnetic valve 1 are all connected with ripple control part with the vacuum-pressure detection in control unit by wire with micropore pressure regulating solenoid valve 2.
In addition, the Multi-path electricity temperature of heating plate of described control unit detects and control section, and adopt digital PID temperature control technique to control the temperature of electric boiling plate 6, have Ability of Resisting Disturbance strong, temperature control is feature accurately, effectively can ensure product quality.The temperature control scope of electric boiling plate 6 is 20 ~ 80 DEG C, temperature-controlled precision ± 1 DEG C; And can hierarchical control be carried out, according to different material useful loads, corresponding electric boiling plate 6 can be opened, to reduce energy ezpenditure.
The specific works method of plate type evacuated impulse dryer machine of the present invention is:
First, material is placed in charging tray 7, by charging tray shovel 29, charging tray 7 is placed on electric boiling plate 6;
Then, by the man-machine interface 12 of control unit, heating is started, dried material to the electric boiling plate 6 that material is housed; Simultaneously, by the vacuum pressure in vacuum transducer 11 Real-Time Monitoring cabinet 4, and transfer to control unit, control unit is according to the high vacuum values arranged and high vacuum retention time, low vacuum value and low vacuum retention time, export and control vavuum pump 20, pressure release electromagnetic valve 1 and micropore pressure regulating solenoid valve 2, realize the pulsating cyclic of vacuum chamber pressure, terminate until dry;
Finally, by charging tray shovel 29, charging tray 7 and material are shifted out body.
Plate type evacuated impulse dryer machine of the present invention is suitable for the drying of the agricultural production materials such as matrimony vine, Poria cocos block, banana chip, grape.
Finally to should be noted that: above embodiment only for illustration of and and unrestricted technical scheme of the present invention, although according to above-mentioned embodiment to invention has been detailed description, will be understood by those skilled in the art that: still can modify to the present invention or equivalent replacement, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. a plate type evacuated impulse dryer machine, is characterized in that:
Described plate type evacuated impulse dryer machine comprises body, control unit, dry materials unit and pulse vacuum unit, wherein,
Described body comprises cabinet (4) and chamber door (17), described cabinet (4) top is provided with vacuum sensor port (8), energise heater plate hole (9) and temperature sensor lead hole (10), and described cabinet (4) below is provided with aspirating hole (16) and relief hole (3);
Described control unit comprises man-machine interface (12), vacuum-pressure detection and ripple control part and Multi-path electricity temperature of heating plate detects and control section;
Described dry materials unit comprises bed of material support (5), electric boiling plate (6) and the charging tray (7) with sandwich construction, multiple electric boiling plate (6) layered arrangement is on bed of material support (5), and charging tray (7) is placed on electric boiling plate (6); Described electric boiling plate (6), for flat, comprises the aluminium sheet (21) on upper strata and the electric heating part of lower floor; The sidewall of described aluminium sheet (21) has temperature sensor hole (27), installs temperature of heating plate sensor (28) in temperature sensor hole (27); The wire of described electric boiling plate (6) is through the energise heater plate hole (9) on cabinet (4), the wire of described temperature of heating plate sensor (28) through the temperature sensor lead hole (10) on cabinet (4), and all to detect with the Multi-path electricity temperature of heating plate of control unit and control section is connected;
Described pulse vacuum unit comprises vavuum pump (20), one way stop peturn valve (19), vacuum transducer (11), pressure release electromagnetic valve (1) and micropore pressure regulating solenoid valve (2), the bleeding point of described vavuum pump (20) is connected by vacuum line (18) with between one way stop peturn valve (19), and the other end of one way stop peturn valve (19) is extended the bleeding point (16) being connected to cabinet (4) by vacuum line (18); Described vacuum transducer (11) is installed in the vacuum sensor port (8) of casing (4); Described pressure release electromagnetic valve (1), micropore pressure regulating solenoid valve (2) are all connected to the relief hole (3) of casing (4) by threeway, described vavuum pump (20), vacuum transducer (11), pressure release electromagnetic valve (1) are all connected with ripple control part with the vacuum-pressure detection in control unit with micropore pressure regulating solenoid valve (2).
2. plate type evacuated impulse dryer machine according to claim 1, is characterized in that: described aluminium sheet (21) thickness is 5 ~ 10mm.
3. plate type evacuated impulse dryer machine according to claim 1 and 2, it is characterized in that: described electric heating part comprises heating wire (22) and mica layer (23), wherein, the upper and lower surface of described heating wire (22) lays the mica layer (23) of insulating heat-conductive respectively; The upper surface of described electric heating part fits tightly aluminium sheet (21); The lower surface of described electric heating part and side, wrap up by covering (25).
4. plate type evacuated impulse dryer machine according to claim 3, it is characterized in that: described aluminium sheet (21), electric heating part and covering (25) are affixed integral by sunk head rivet (24), and in the junction of covering (25) with aluminium sheet (21), use heatproof fluid sealant (26) sealing.
5. plate type evacuated impulse dryer machine according to claim 3, is characterized in that: described covering (25) is stainless steel.
6. plate type evacuated impulse dryer machine according to claim 1, is characterized in that: described charging tray (7) is made up of food-grade, soft, Heat Conduction Material.
7. the plate type evacuated impulse dryer machine according to claim 1 or 6, it is characterized in that: charging tray shovel (29) for loading and unloading described charging tray (7) comprises dual-handle (30), bar palisade base plate (31), material shovel sidewall (32), top tie rod (33), described bar palisade base plate (31) is shoveled sidewall (32) with material and is fixed as one, described top tie rod (33) is shoveled sidewall (32) with material and is fixed as one, and dual-handle (30) bolt is connected to the side of charging tray shovel (29).
8. plate type evacuated impulse dryer machine according to claim 1, it is characterized in that: described cabinet (4) and chamber door (17) are interior outer double-layer structure, equal fill insulant material (13) between the ectonexine of described cabinet (4) and chamber door (17), described cabinet (4) bottom is provided with osculum (14), and the bottom of osculum (14) is connected with draining valve (15).
9. plate type evacuated impulse dryer machine according to claim 1, it is characterized in that: the pressure detecting range of described vacuum transducer (11) is 0 ~ 100Kpa, described Multi-path electricity temperature of heating plate detects and control section, adopt the temperature of digital PID temperature control technique hierarchical control electric boiling plate (6), the temperature control scope of electric boiling plate (6) is 20 ~ 80 DEG C, temperature-controlled precision ± 1 DEG C.
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| CN107166897A (en) * | 2017-05-23 | 2017-09-15 | 中国农业大学 | A kind of vacuum impulse dries the method and apparatus of Poria cocos |
| CN107449268A (en) * | 2017-08-15 | 2017-12-08 | 合肥明英富海生物科技有限公司 | A kind of processing technology of the heater of starch dry processing device |
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| CN108548376A (en) * | 2018-05-18 | 2018-09-18 | 新疆希望田野农业科技有限公司 | A kind of vacuum impulse flow-disturbing drying device |
| CN108645132A (en) * | 2018-05-18 | 2018-10-12 | 新疆希望田野农业科技有限公司 | A kind of vacuum impulse drying equipment disturbing flow device |
| CN110530118A (en) * | 2019-08-27 | 2019-12-03 | 何宏健 | A kind of electric heating constant-temperature blowing drying box and its application method with pressure release cooling body |
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| CN115574559A (en) * | 2022-11-21 | 2023-01-06 | 南京同皓干燥设备有限公司 | Vacuum low-temperature pulsation intelligent drying system based on multi-source data analysis |
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