CN104596207B - Plate type evacuated impulse dryer machine - Google Patents
Plate type evacuated impulse dryer machine Download PDFInfo
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- CN104596207B CN104596207B CN201510036962.7A CN201510036962A CN104596207B CN 104596207 B CN104596207 B CN 104596207B CN 201510036962 A CN201510036962 A CN 201510036962A CN 104596207 B CN104596207 B CN 104596207B
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Abstract
The invention belongs to technical field of agricultural product process, be specifically related to a kind of plate type evacuated impulse dryer machine.A kind of plate type evacuated impulse dryer machine, including body, control unit, the dry materials unit with multi-layer material frame for conveying and pulse vacuum unit.Heating part of the present invention uses special electric boiling plate, and processing simplicity, low cost, heating-up temperature are uniform, greatly reduce the manufacture of drying machine, operation and maintenance cost；Hierarchical control mode can be opened corresponding heating plate according to actual treatment amount, thus reduce energy expenditure；Meanwhile, use soft charging tray to significantly improve the contact condition between charging tray and heating plate, dry products quality is effectively ensured, and uses special charging tray shovel handling charging tray, overcome the problem that soft charging tray inconvenience is moved；Additionally, the invention belongs to static being dried, do not result in the breakage of material；Multiple structure effectively raises the processing useful load of equipment.
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
Be dried is the important step of processing of farm products.Being different from vacuum drying technique, it is a kind of being dried that vacuum impulse is dried
Room pressure is according to the dry technology of certain rule periodically pulsing change.Contrast test shows, vacuum impulse is dried serious
Empty being dried has higher drying efficiency, shorter drying time and preferably rehydration, this is because: first, material is why
Being dried, be because the steam partial pressure steam partial pressure more than dry environment of evaporating surface, i.e. there is barometric gradient in both, and
And the size of dry speed and this barometric gradient is directly proportional.But current vacuum drying technique, in dry run often
Use 1 vacuum or the mode using pressurize to be dried, now, the steam partial pressure on material evaporation surface and the water of dry environment
Vapor partial pressure easily reaches balance, significantly reduces drying and dehydrating efficiency.And vacuum impulse dry technology, week in dry run
Phase property ground switching pressure, constantly breaks the poised state of moisture evaporation, thus accelerates to be dried；Second, the pressure in dry run
Pumping processes, the duct of extendible material, increase the duct that when being dried, material moisture migrates, thus accelerate to be dried, and contribute to
Improve the rehydration of material.
Chinese patent 200810104061.7 discloses a kind of drum-type vacuum impulse dryer machine, and it uses hot water (oily) to follow
The mode of ring provides drying source, is mainly used in the preferable material of mobility.But it is easily caused for rolling in dry run
The material of damaged (broken), the application of vacuum impulse dry technology is restricted, such as sheet materials such as banana chip, Fructus Jujubae sheets, such as Chinese holly
The berries material of the thin-walleds such as Qi, and the material such as Poria block that quality is loose.
Meanwhile, vacuum impulse of the prior art is dried employing and adds the mode of thermal medium (water or oil) circulation heating, also deposits
Notable defect following:
First, the pipeline of complexity need to be welded, device fabrication cost is high.For improving heat transfer efficiency, heating part often uses
Labyrinth type is leaked water (oily), and weld seam is many, easily leaks, and is more applied in vacuum environment due to it, and weld leakiness vacuum dramatically increases
The difficulty of processing of equipment and processing cost；Meanwhile, the adnexaes such as equipment also needs matched with hot water tank, heat-exchanger pump, add dry setting
Standby fringe cost.
Second, energy consumption is high.Complete to heat medium circulation, add thermal medium and generally require and reach a certain amount of, be only heated
Just need to expend substantial amounts of energy；Add thermal medium to circulate in complex pipeline, there is the substantial amounts of loss of flood peak；And be homogeneous heating,
Heat supply is abundant, and hot water circulating pump need to run continuously, adds the operation energy consumption of equipment；Meanwhile, when a collection of dry materials terminates, not
When being carried out continuously the drying process of lower batch materials, add the amount of heat contained in thermal medium and can run off and waste again.
3rd, heat medium circulation pipe-line system, block after easy fouling, it is difficult to clean, once break down, it is necessary to will
The thermal medium that adds in complex pipeline pours out rear repair and replacement, and maintenance is inconvenient for.
4th, it is unfavorable for the dynamic regulation of heating-up temperature.Implement temperature to be dried, be conducive to improving drying efficiency and guarantee
Product quality, but heating medium thermal capacitance is big, quality is many, heating rate is limited, and cooling the slowest, do not meet dry run
Carry out the novel process requirement the most dynamically adjusted.Meanwhile, add thermal medium and heat up slowly, also results in the early stage of drying preheating time
Longer, have impact on the whole efficiency of dry run.
It addition, electric boiling plate of the prior art, it is with tubular electrothermal element as heater, and brake forming, enters
After mould, use metal alloy compositions, by casting of metals, the electric boiling plate of die-casting process.Due to casting metal used
There is good heat conductivity, so the distinguishing feature of casting heating plate is heater plate surface homogeneous temperature, but manufacture this heating plate
Relying on special equipment, processing technique is complicated, price is high, and for the drying equipment of Multi-layer warming, cost is higher, is unfavorable for showing
Write the cost of reduction equipment.
Heat is the basic driver power of material moisture removing.At present, vacuum impulse dry technology dry heat transmission with
Conduction of heat is main, and the quality of heat-transfer effect, can greatly affect efficiency and the quality of product that vacuum impulse is dried.At present,
Being dried charging tray many employings metal material to make, thickness is between 1～1.5mm, and often due to its area is relatively big and be thin-wall construction,
Charging tray is difficult to be made to substantially flat, causes fitting between charging tray and heating surface tight, and thermal conduction resistance is big；Meanwhile, in dry run
Bigger range of temperature (temperature rise amplitude reaches 20～60 DEG C), the collision being difficult to avoid that during use, also can make hard
Metal charging tray produces warpage, the situation such as concavo-convex, produces the phenomenons such as bad, the point-like heat conduction of area contact, cause being dried heat supply not enough,
Uneven heating, affects drying efficiency, and produces the problem that dry materials is uneven.
Visible, for expanding the range of application of vacuum drying technique, effectively reduce the manufacture of equipment, maintenance and use cost,
Solve above-mentioned technical problem imperative.
Summary of the invention
For being unsuitable in dry run the material that carries out rolling, it is an object of the invention to provide a kind of flat very
Empty impulse dryer machine, can effectively reduce device fabrication, maintenance cost and energy consumption for drying, charging tray and heating when can improve dry simultaneously
Heat conduction situation between plate, make heat supply fully, uniform drying.
In order to achieve the above object, the technical scheme is that
A kind of plate type evacuated impulse dryer machine, described plate type evacuated impulse dryer machine includes body, control unit, thing
Material drying unit and pulse vacuum unit, wherein,
Described body includes cabinet 4 and chamber door 17, and described cabinet 4 is arranged over vacuum sensor port 8, heating plate powers hole
9 and temperature sensor lead hole 10, it is provided with aspirating hole 16 and relief hole 3 below described cabinet 4；
Described control unit includes man machine interface 12, vacuum-pressure detection and ripple control part and Multi-path electricity heating plate temperature
Degree detection and control part；
Described dry materials unit includes having the bed of material support 5 of multiple structure, electric boiling plate 6 and charging tray 7, and multiple electricity add
Hot 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, including
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, temperature sensor
Temperature of heating plate sensor 28 is installed in hole 27；The wire of described electric boiling plate 6 is powered hole 9 through the heating plate on cabinet 4, institute
The wire stating temperature of heating plate sensor 28 is through the temperature sensor lead hole 10 on cabinet 4 and all many with control unit
Road electric boiling plate temperature detection and control part are connected；
Described pulse vacuum unit includes vacuum pump 20, one way stop peturn valve 19, vacuum transducer 11, pressure release electromagnetic valve 1 and
Micropore pressure regulating solenoid valve 2, is connected by vacuum line 18 between the bleeding point of described vacuum pump 20 and one way stop peturn valve 19, and
The other end of one way stop peturn valve 19 is extended the aspirating hole 16 being connected to cabinet 4 by vacuum line 18；Described vacuum transducer 11 is pacified
It is loaded in the vacuum sensor port 8 of cabinet 4；Described pressure release electromagnetic valve 1, micropore pressure regulating solenoid valve 2 are all connected to machine by threeway
The relief hole 3 of case 4, described vacuum pump 20, vacuum transducer 11, pressure release electromagnetic valve 1 and micropore pressure regulating solenoid valve 2 are all single with control
Vacuum-pressure detection in unit is connected with ripple control part.
Described aluminium sheet 21 thickness is 5～10mm.
Described electricity heating part includes heating wire 22 and mica layer 23, and wherein, the upper and lower surface of described heating wire 22 is respectively
Lay the mica layer 23 of insulating heat-conductive；The upper surface of described electricity heating part fits tightly aluminium sheet 21；Described electricity heating part
Lower surface and side, wrapped up by eyelid covering 25.
Described aluminium sheet 21, electricity heating part and eyelid covering 25 are affixed integral by sunk head rivet 24, and at eyelid covering 25 and aluminium sheet
The junction of 21, uses heatproof fluid sealant 26 to seal.
Described eyelid covering 25 is stainless steel.
Described charging tray 7 is made up of food stage, soft, Heat Conduction Material.
Dual-handle 30, bar palisade base plate 31, shovel sidewall 32, top is included for loading and unloading the charging tray shovel 29 of described charging tray 7
Tie rod 33, described bar palisade base plate 31 fixes as one with shovel sidewall 32, and described top tie rod 33 is affixed with shovel sidewall 32
Being integrated, dual-handle 30 is bolted to the side of charging tray shovel 29.
Described cabinet 4 and chamber door 17 are interior outer double-layer structure, all fill between described cabinet 4 and the ectonexine of chamber door 17
Insulation material 13, is provided with osculum 14 bottom described cabinet 4, the bottom of osculum 14 connects drain valve 15.
The pressure detecting range of described vacuum transducer 11 is 0～100kPa, described Multi-path electricity temperature of heating plate detection and
Control part, use digital PID temperature control technique hierarchical control electric boiling plate 6 temperature, the temperature control scope of electric boiling plate 6 be 20～
80 DEG C, temperature-controlled precision ± 1 DEG C.
Compared with prior art, the beneficial effects of the present invention is:
1. material is static is dried, and does not results in the breakage of material；Multiple structure is effectively improved the processing of equipment and loads
Amount；Hierarchical control mode can be opened corresponding heating plate according to actual treatment amount, thus reduce energy expenditure.
2. heat source uses special electric boiling plate, and manufacturing process is simple, is independent of special equipment, and price is low, install and
Safeguard and change conveniently；Lay the upper strata aluminium sheet that heat conductivility is good, heating plate heat supply temperature can be made visibly homogeneous, improve material
The uniformity being dried, the density of aluminum is less simultaneously, compared to other metals, will not dramatically increase the weight of heating plate；When being dried
Only need the heater plate of small size, without complicated energy bang 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 is quick simultaneously, favorably
According to dry materials situation, baking temperature being carried out rapid temperature rise and drop regulation.
3. heating charging tray uses heat conduction, food grade materials soft, thin-walled to make, when being placed on electric boiling plate, and charging tray
Bottom can freely stay, with closely with contact heater plate, be effectively improved when using hard metal to manufacture charging tray in the past, owing to expecting
Out-of-flatness that dish is difficult to avoid that or convex-concave, the thermal contact resistance caused is big, loose contact, heat supply is not enough and uneven, and thus
The problems such as the drying efficiency caused is low, uneven drying.
4. use special charging tray shovel handling charging tray, the problem overcoming bigger soft charging tray inconvenience handling.
Accompanying drawing explanation
Fig. 1 is the front view of the plate type evacuated impulse dryer machine of the present invention；
Fig. 2 is the schematic side view of the electric boiling plate of the present invention；
Fig. 3 is the schematic top plan view of the electric boiling plate of the present invention；
Fig. 4 is the perspective view of the charging tray of the present invention；
Fig. 5 is the perspective view of the charging tray shovel of the present invention.
[primary clustering symbol description]
1 pressure release electromagnetic valve
2 micropore pressure regulating solenoid valves
3 relief holes
4 cabinets
5 bed of material supports
6 electric boiling plates
7 charging trays
8 vacuum sensor port
9 heating plates are powered hole
10 temperature sensor lead holes
11 vacuum transducers
12 man machine interfaces
13 insulation materials
14 osculums
15 drain valves
16 aspirating holes
17 chamber doors
18 vacuum lines
19 one way stop peturn valves
20 vacuum pumps
21 aluminium sheets
22 heating wire
23 mica layers
24 sunk head rivets
25 eyelid 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 shovel sidewalls
33 top tie rods
Detailed description of the invention
With embodiment, the detailed description of the invention of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is the front view of the plate type evacuated impulse dryer machine of the present invention；Fig. 2 is the side-looking of the electric boiling plate of the present invention
Schematic diagram；Fig. 3 is the schematic top plan view of the electric boiling plate of the present invention；Fig. 4 is the perspective view of the charging tray of the present invention；Figure
5 is the perspective view of the charging tray shovel of the present invention.
As it is shown in figure 1, the plate type evacuated impulse dryer machine of the present invention includes body, control unit, dry materials unit
With pulse vacuum unit.
Described body includes that cabinet 4 and chamber door 17, cabinet 4 and chamber door 17 are interior outer double-layer structure.Cabinet 4 and chamber door 17
Ectonexine between all fill insulation material 13, play drying chamber chamber interior walls insulation, reduce condensed water formed, reduce the material moisture absorption
The effect of probability.Described cabinet 4 is arranged over vacuum sensor port 8, heating plate powers hole 9 and temperature sensor lead hole 10.
Aspirating hole 16 and relief hole 3 it is provided with below described cabinet 4.Being provided with osculum 14 bottom described cabinet 4, the bottom of osculum 14 connects
It is connected to drain valve 15.
Described control unit includes man machine interface 12, vacuum-pressure detection and ripple control part and Multi-path electricity heating plate temperature
Degree detection and control part.
Described dry materials unit includes having the bed of material support 5 of multiple structure, electric boiling plate 6 and charging tray 7, and multiple electricity add
Hot 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, including aluminium sheet 21 and the electric heating part of lower floor on upper strata
Point.Described aluminium sheet 21 thickness is 5～10mm.Described electricity heating part includes heating wire 22 and mica layer 23, wherein, described electric heating
The upper and lower surface of silk 22 lays the mica layer 23 of insulating heat-conductive respectively.The upper surface of described electricity heating part fits tightly aluminium sheet
21, the lower surface of described electricity heating part and side, wrapped up by rustless steel eyelid covering 25.Described aluminium sheet 21, electricity heating part and
Eyelid covering 25 is affixed integral by sunk head rivet 24, and in the junction of eyelid covering 25 with aluminium sheet 21, uses heatproof fluid sealant further
26 seal, and play and seal waterproof effect.Aluminium sheet 21 lighter in weight on this electric boiling plate 6 upper strata, heat conductivility is good, can make electricity
The heat supply temperature of heating plate 6 is uniform；Riveting process is easy, it is ensured that electric boiling plate 6 upper surface smooth, prevents charging tray and heating
Loose contact between plate；Compared to existing casting heating plate processed, this electric boiling plate 6 performance is very nearly the same, but price reduction is a lot.
Further, the sidewall of described aluminium sheet 21 has temperature sensor hole 27, installs and add in temperature sensor hole 27
Hot plate temperature sensor 28, for detecting the temperature of electric boiling plate 6.The wire of described electric boiling plate 6 is through the heating on cabinet 4
Plate is powered hole 9, the wire of described temperature of heating plate sensor 28 through the temperature sensor lead hole 10 on cabinet 4, and all with
The detection of Multi-path electricity temperature of heating plate and the control part of control unit are connected.
As shown in Figure 4, charging tray 7 is made up of food stage, soft, Heat Conduction Material, uses food grade silicone material in the present invention
Material.Thin layer soft material can collapse to fit tightly electric boiling plate 6 automatically, thus effectively improves charging tray 7 and electric boiling plate 6
Between contact, make heat the most abundant via the transmission of charging tray 7, uniformly, thus improve drying efficiency, improve the equal of dry materials
Even property.
As it is shown in figure 5, use special charging tray shovel 29 to load and unload soft charging tray 7 so that the handling of soft charging tray, mobile more
For easily.Described charging tray shovel 29 includes dual-handle 30, bar palisade base plate 31, shovel sidewall 32 and top tie rod 33, described bar grid
Shape base plate 31 is welded into one with shovel sidewall 32, and top tie rod 33 is welded into one with shovel sidewall 32, and dual-handle 30 bolt connects
Side at charging tray shovel 29.Wherein, dual-handle 30 design makes when the charging tray of mobile large-size shovels 29 more convenient, bar grid
Shape base plate 31, on the premise of the soft charging tray of satisfied support 7, can alleviate the weight of charging tray shovel 29, meanwhile, the top of charging tray shovel 29
Tie rod 33 deforms after can preventing charging tray shovel 29 heavy burden.
Described pulse vacuum unit includes vacuum pump 20, one way stop peturn valve 19, vacuum transducer 11, pressure release electromagnetic valve 1 and
Micropore pressure regulating solenoid valve 2.It is connected by vacuum line 18 between the bleeding point of described vacuum pump 20 and one way stop peturn valve 19, and single
It is connected to the aspirating hole 16 of cabinet 4 by vacuum line 18 extension to the other end of check-valves 19.Described vacuum transducer 11 is installed
In the vacuum sensor port 8 of cabinet 4, its pressure detecting range is 0～100kPa.Described pressure release electromagnetic valve 1, micropore pressure regulation electricity
Magnet valve 2 is all connected to the relief hole 3 of cabinet 4 by threeway.Described vacuum pump 20, vacuum transducer 11, pressure release electromagnetic valve 1 and micro-
Hole pressure regulating solenoid valve 2 is all connected with ripple control part with the vacuum-pressure detection in control unit by wire.
It addition, the Multi-path electricity temperature of heating plate detection of described control unit and control part, use digital PID temperature control technique
Control the temperature of electric boiling plate 6, there is Ability of Resisting Disturbance strong, temperature control feature accurately, can effectively ensure that product quality.Electrical heating
The temperature control scope of plate 6 is 20～80 DEG C, temperature-controlled precision ± 1 DEG C；And hierarchical control can be carried out, can load according to different materials
Amount, opens corresponding electric boiling plate 6, to reduce energy expenditure.
The specific works method of the 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, the electric boiling plate 6 equipped with material is started heating, dried material；
Meanwhile, vacuum transducer 11 monitoring the vacuum pressure in cabinet 4 in real time, and transmit to control unit, control unit is according to setting
The high vacuum values put and fine vacuum retention time, coarse vacuum value and coarse vacuum retention time, output controls vacuum pump 20, pressure release electricity
Magnet valve 1 and micropore pressure regulating solenoid valve 2, it is achieved the pulsating cyclic of vacuum chamber pressure, terminate until being dried；
Finally, by charging tray shovel 29, charging tray 7 and material are removed body.
The plate type evacuated impulse dryer machine of the present invention is suitable for the agricultural production materials such as Fructus Lycii, Poria block, banana chip, Fructus Vitis viniferae
It is dried.
Finally be should be noted that: embodiment of above be merely to illustrate and and unrestricted technical scheme,
Although the present invention being described in detail according to above-mentioned embodiment, it will be apparent to an ordinarily skilled person in the art that: depend on
So the present invention can be modified or equivalent, without deviating from any amendment or the equivalent of spirit and scope of the invention
Replacing, it all should be contained in the middle of scope of the presently claimed invention.
Claims (9)
1. a plate type evacuated impulse dryer machine, it is characterised in that:
Described plate type evacuated impulse dryer machine includes body, control unit, dry materials unit and pulse vacuum unit, its
In,
Described body includes cabinet (4) and chamber door (17), and described cabinet (4) is arranged over vacuum sensor port (8), heating plate supplies
Electricity hole (9) and temperature sensor lead hole (10), described cabinet (4) lower section is provided with aspirating hole (16) and relief hole (3)；
Described control unit includes man machine interface (12), vacuum-pressure detection and ripple control part and Multi-path electricity temperature of heating plate
Detection and control part；
Described dry materials unit includes having the bed of material support (5) of multiple structure, electric boiling plate (6) and charging tray (7), Duo Ge electricity
Heating 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, including aluminium sheet (21) and the electric heating part of lower floor on upper strata；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) passes machine
Heating plate on case (4) is powered hole (9), and the wire of described temperature of heating plate sensor (28) passes through the temperature on cabinet (4)
Sensor wire guide (10), and all detect with the Multi-path electricity temperature of heating plate of control unit and control partly to be connected；
Described pulse vacuum unit includes vacuum pump (20), one way stop peturn valve (19), vacuum transducer (11), pressure release electromagnetic valve
(1) and micropore pressure regulating solenoid valve (2), vacuum line is passed through between bleeding point and the one way stop peturn valve (19) of described vacuum pump (20)
(18) connect, and the other end of one way stop peturn valve (19) is extended the aspirating hole being connected to cabinet (4) by vacuum line (18)
(16)；Described vacuum transducer (11) is installed in the vacuum sensor port (8) of cabinet (4)；Described pressure release electromagnetic valve (1), micro-
Hole pressure regulating solenoid valve (2) is all connected to the relief hole (3) of cabinet (4), described vacuum pump (20), vacuum transducer by threeway
(11), pressure release electromagnetic valve (1) and micropore pressure regulating solenoid valve (2) all with the vacuum-pressure detection in control unit and ripple control portion
Divide and connect.
Plate type evacuated impulse dryer machine the most according to claim 1, it is characterised in that: described aluminium sheet (21) thickness is 5
～10mm.
Plate type evacuated impulse dryer machine the most according to claim 1 and 2, it is characterised in that: the heating part subpackage of described electricity
Including heating wire (22) and mica layer (23), wherein, the upper and lower surface of described heating wire (22) lays the Muscovitum of insulating heat-conductive respectively
Layer (23)；The upper surface of described electricity heating part fits tightly aluminium sheet (21)；The lower surface of described electricity heating part and side, all
Wrapped up by eyelid covering (25).
Plate type evacuated impulse dryer machine the most according to claim 3, it is characterised in that: described aluminium sheet (21), electricity heating
Part and eyelid covering (25) are affixed integral by sunk head rivet (24), and in the junction of eyelid covering (25) Yu aluminium sheet (21), use resistance to
Temperature fluid sealant (26) seals.
Plate type evacuated impulse dryer machine the most according to claim 3, it is characterised in that: described eyelid covering (25) is rustless steel
Material.
Plate type evacuated impulse dryer machine the most according to claim 1, it is characterised in that: described charging tray (7) by food stage,
Soft, Heat Conduction Material is made.
7. according to the plate type evacuated impulse dryer machine described in claim 1 or 6, it is characterised in that: it is used for loading and unloading described charging tray
(7) charging tray shovel (29) includes dual-handle (30), bar palisade base plate (31), shovel sidewall (32), top tie rod (33), described bar
Palisade base plate (31) fixes as one with shovel sidewall (32), and described top tie rod (33) is affixed with shovel sidewall (32) is one
Body, dual-handle (30) is bolted to the side of charging tray shovel (29).
Plate type evacuated impulse dryer machine the most according to claim 1, it is characterised in that: described cabinet (4) and chamber door
(17) it is interior outer double-layer structure, between the ectonexine of described cabinet (4) and chamber door (17), all fills insulation material (13), described
Cabinet (4) bottom is provided with osculum (14), and the bottom of osculum (14) connects drain valve (15).
Plate type evacuated impulse dryer machine the most according to claim 1, it is characterised in that: described vacuum transducer (11)
Pressure detecting range is 0～100kPa, the detection of described Multi-path electricity temperature of heating plate and control part, uses digital PID temperature control skill
The temperature of art 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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