CN105286069A - Net cage type tobacco leaf vertical bulk curing device - Google Patents
Net cage type tobacco leaf vertical bulk curing device Download PDFInfo
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- CN105286069A CN105286069A CN201510759190.XA CN201510759190A CN105286069A CN 105286069 A CN105286069 A CN 105286069A CN 201510759190 A CN201510759190 A CN 201510759190A CN 105286069 A CN105286069 A CN 105286069A
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Abstract
The invention relates to the technical field of curing devices, in particular to a net cage type tobacco leaf vertical bulk curing device. The net cage type tobacco leaf vertical bulk curing device comprises a curing chamber with a frame. The frame is a metal frame, and the surface of the frame is provided with a plurality of strip-shaped holes. The curing room comprises a floor heating device arranged on the ground. The floor heating device is a water floor heating device and is connected with a heating device. The heating device is a liquefied petroleum gas fuel heating device. The floor heating device is arranged on the ground of the curing room and can not occupy the space in the curing room, space is saved, and tobacco leaves can be effectively cured. Heat in a floor heating pipe can be evenly given out in the curing room through a roundabout floor heating system, the temperature in the curing room is uniform, and curing efficiency is improved. With liquefied petroleum gas as fuel, the liquefied petroleum gas fuel heating device is environmentally friendly and clean and has the advantages of being clean, sanitary, safe, low in price, high in heating efficiency, convenient to use and the like.
Description
Technical field
The present invention relates to the technical field of flue-cured tobacco equipment, more specifically, relate to the upright apparatus for baking in bulk of a kind of cage type tobacco leaf.
Background technology
Tobacco flue-curing house is indispensable basic equipment in cured tobacco production.Tobacco flue-curing house, after interior baking modulation, just shows the distinctive color of flue-cured tobacco, type, becomes the quality raw materials meeting cigarette industry needs.Its general principle is after tobacco leaf is heated, and the moisture in tobacco leaf is discharged, and is discharged outside tobacco flue-curing house, thus makes tobacco leaf scalding, drying after moisture vaporization.
Existing framework can not adjust, make user hang tobacco leaf and collect tobacco leaf process in inconvenient.And in prior art, lack a kind of tobacco flue-curing house utilizing heating installation.
Summary of the invention
The present invention, for overcoming at least one defect described in above-mentioned prior art, provides a kind of cage type tobacco leaf upright apparatus for baking in bulk, and its structure is simple, easy to use, effectively can utilize floor heating device.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the upright apparatus for baking in bulk of a kind of cage type tobacco leaf, and wherein, comprise the flue-cured tobacco room being provided with framework, described framework is metal framework and its surface is provided with multiple bar hole; Described flue-cured tobacco chamber interior and flue-cured tobacco outdoor be extended with guide rail, framework is located on guide rail; Described framework is also provided with the mechanical arm for stacking framework outward;
In the present invention, the roasting mode of tobacco leaf is for erectting baking in bulk, and the tobacco leaf one piece of block setting in bulk being about to be collected is placed in framework, and framework has certain volume, can by tobacco leaf vertically and at horizontal a fairly large number of tobacco leaf placed side by side.Because framework is metal framework, can bear higher temperature and metal structure is stablized solid, the heat that floor heating device distributes is delivered in framework by multiple bar hole, and tobacco leaf can be toasted uniformly.
In addition, due to existing installation and collect tobacco leaf and generally all complete in tobacco flue-curing house, its narrow space is difficult to operation, and can first tobacco leaf be all placed in framework by framework in the outside of tobacco flue-curing house in the present invention, then first in wherein whole framework propelling tobacco flue-curing house.The process collecting tobacco leaf is also the same.Like this, facilitate the installation of personnel and collect the operation of tobacco leaf, saving the time of installing and collecting tobacco leaf, improve operating efficiency.
Mechanical arm is the automated machine device obtaining most broad practice in robot technical field, can see its figure in fields such as industry manufacture, therapeutic treatment, entertainment service, military affairs, semiconductor manufacturing and space probations.Although their form is had nothing in common with each other, they have a common feature, can accept instruction exactly, accurately navigate to three-dimensional (or two dimension) spatially certain and a bit carry out operation.
Mechanical arm is divided into multi-joint manipulator arm according to the difference of version, rectangular coordinate system mechanical arm, spherical coordinate system mechanical arm, polar coordinates mechanical arm, cylindrical coordinates mechanical arm etc.Common six degree of freedom mechanical arm.Have X to move, Y moves, and Z moves, and X rotates, and Y rotates, and Z rotates six-freedom degree composition.
Tobacco flue-curing house also comprises is located at ground floor heating device; Floor heating device is water floor heating device, and described floor heating device connects heater, and heater is LP gas fuel heater.
In the winter of cold, indoor location floor heating device can be used for heating, and floor heating device can generate heat after running certain hour.In the present invention, the heating installation distributed in floor heating device is utilized to toast tobacco leaf, make use of floor heating device and do not need to arrange in addition heater, save the cost that heater is set in addition, floor heating device is located at the ground of tobacco flue-curing house, the space of tobacco flue-curing house can not be taken, save space, can effectively toast tobacco leaf.
And LP gas fuel heater is using liquefied petroleum gas as fuel, environment protection clean, has the features such as sanitation and hygiene, safety, cheapness, the efficiency of heating surface be high, easy to use.
Floor heating principle: floor heating is with whole ground for radiator, by the heating agent in flooring radiation layer, the whole ground of homogeneous heating, utilizes the rule of the accumulation of heat on ground self and heat upwards radiation to conduct from the bottom to top, reaches the object of heating.
Mainly Four types is divided into: water floor heating, electric heating film floor heating, heating cable floor heating, the brilliant floor heating of carbon by floor heating.The general principle of four kinds of floor heating modes is different.
In the present invention, utilize the heat distributed in floor heating device to carry out flue-cured tobacco, the temperature difference in forming chamber, finally carry out thermal cycle and make whole indoor temperature evenly increase.And utilize the form of water floor heating, about maximum temperature reaches 60-70 degree when making flue-cured tobacco.
Further, described floor heating device comprises floor heating pipe, the roundabout formation geothermal system in the ground of floor heating pipe in tobacco flue-curing house.Roundabout geothermal system makes the heat in floor heating pipe to distribute in tobacco flue-curing house uniformly, makes homogeneous temperature in tobacco flue-curing house, and the efficiency of flue-cured tobacco improves.
In addition, in the present invention, room body can adopt brick mix structure or movable board room structure, and the benefit of brick mix structure is that its rugged construction is stablized, and can resist various abiogenous accident, and the carrying out baking of tobacco leaf Absorbable organic halogens is preserved.
And adopt the benefit of movable board room structure to be to facilitate installing/dismounting, because tobacco flue-curing house is generally built in the place near tobacco leaf growth, and consider the situation of soil, disease and pest, nutrient balance, the rule of a crop rotation in 3 years is generally followed in the growth of tobacco leaf, when earth complete one season cigarette production after, be likely not suitable for the growth of tobacco leaf, therefore, adopt movable board room structure entirety to move, meet the actual needs of production, improve the utilization rate of tobacco flue-curing house; The more important thing is and improve land utilization ratio, make soil can obtain rational layout, transfer to the place of production from unproductive place, improve the utilization rate of resource.
Further, described frame shape is square, and framework is also provided with handle;
The quantity of the indoor framework of flue-cured tobacco is 18, and each framework is provided with gap after piling up each other, and the ground of the framework and flue-cured tobacco room of being located at bottom is also provided with gap.
In the present invention, it is 8 meters because general tobacco flue-curing house is of a size of length, width is 2.7 meters, be highly 3 meters, each length of this framework is about 2.3 meters, and width is about 1.3 meters, highly be about 0.6 meter, being arranged so that of above-mentioned size can in the indoor placement 18 of flue-cured tobacco, and the height of each framework and the height of tobacco leaf match, and farthest can place tobacco leaf.
In addition, be provided with the transmission that above-mentioned gap ensure that the indoor heat of flue-cured tobacco, heat can be recycled in each framework uniformly, ensure that the uniformity of tobacco flue-curing.
Further, owing to having filled more tobacco leaf in general framework, the heavier-weight of framework.In the present invention, lay guide rail at the extended spot of flue-cured tobacco chamber interior and flue-cured tobacco outdoor, by guide rail, framework is advanced or release tobacco flue-curing house, facilitate movement and the transport of whole framework like this, save the consumption of manpower, improve operating efficiency.
On the other hand, in order to improve the degree of automation further, can also conveyer belt and motor be set on guide rail, conveyer belt is driven to rotate by motor, thus full automaticly framework can be made to move forward into tobacco flue-curing house along guide rail or move to outside in tobacco flue-curing house, full automatic like this transportation frame greatly facilitates the operation of user, saves the consumption of manpower, improves operating efficiency.
In the present invention, adopt mechanical arm automatically to be put away by framework heap, which reduce the cost of a dead lift, improve the degree of automation.
Further, described flue-cured tobacco room sidewall is provided with moisture exhausting port.Described moisture exhausting port is provided with dehumidifier.Along with the raising of baking efficiency, flue-cured tobacco room arranges corresponding moisture exhausting port and dehumidifier can improve hydrofuge performance.
Heater comprise liquefied petroleum gas storage tank, with the tank connected air delivering pipeline of liquefied petroleum gas storage, air delivering pipeline is provided with manually-operated gate, air delivering pipeline is also provided with a point control valve, and a point control valve connects heating element by pipeline, and heating element connects the pipeline of floor heating device.
Liquefied petroleum gas storage tank can storage liquid liquefied oil gas, during heating, opens manually-operated gate, power turn-on switch, then closes ignition knob simultaneously, and a point control valve is opened, and start heating, the heat that heating element sends is delivered to the pipeline of floor heating device.
Compared with prior art, beneficial effect is: the invention enables the efficiency of tobacco flue-curing and quality to be improved significantly.First tobacco leaf all can be placed in framework by framework in the outside of tobacco flue-curing house in the present invention, then first in wherein whole framework propelling tobacco flue-curing house.The process collecting tobacco leaf is also the same.Like this, facilitate the installation of personnel and collect the operation of tobacco leaf, saving the time of installing and collecting tobacco leaf, improve operating efficiency.
Floor heating device is located at the ground of tobacco flue-curing house, can not take the space of tobacco flue-curing house, save space, can effectively toast tobacco leaf.Roundabout geothermal system makes the heat in floor heating pipe to distribute in tobacco flue-curing house uniformly, makes homogeneous temperature in tobacco flue-curing house, and the efficiency of flue-cured tobacco improves.And LP gas fuel heater is using liquefied petroleum gas as fuel, environment protection clean, has the features such as sanitation and hygiene, safety, cheapness, the efficiency of heating surface be high, easy to use.
Accompanying drawing explanation
Fig. 1 is plan structure schematic diagram of the present invention.
Fig. 2 is side-looking structural representation of the present invention.
Fig. 3 is that framework of the present invention stacks view.
Fig. 4 is frame structure schematic diagram of the present invention.
Fig. 5 is heater schematic diagram of the present invention.
Detailed description of the invention
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent; In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.Describe position relationship in accompanying drawing only for exemplary illustration, the restriction to this patent can not be interpreted as.
As Figure 1-4, the upright apparatus for baking in bulk of a kind of cage type tobacco leaf, wherein, comprises the flue-cured tobacco room 1 being provided with framework 3, and framework 3 is for metal framework and its surface is provided with multiple bar hole 31; Inner and outside, flue-cured tobacco room 1, flue-cured tobacco room 1 be extended with guide rail, framework 3 is located on guide rail; The outer mechanical arm 315 be also provided with for stacking framework 3 of framework 3;
Tobacco flue-curing house also comprises is located at ground floor heating device 20; Floor heating device 20 is water floor heating device, and floor heating device 20 connects heater, and heater is LP gas fuel heater.
In the present embodiment, the heating installation distributed in floor heating device 20 is utilized to toast tobacco leaf, make use of floor heating device and do not need to arrange in addition heater, save the cost that heater is set in addition, floor heating device is located at the ground of tobacco flue-curing house, the space of tobacco flue-curing house can not be taken, save space, can effectively toast tobacco leaf.
In the present embodiment, utilize the heat distributed in floor heating device 20 to carry out flue-cured tobacco, the temperature difference in forming chamber, finally carry out thermal cycle and make whole indoor temperature evenly increase.And utilize the form of water floor heating, about maximum temperature reaches 60-70 degree when making flue-cured tobacco.
In the present embodiment, the roasting mode of tobacco leaf is for erectting baking in bulk, and the tobacco leaf one piece of block setting in bulk being about to be collected is placed in framework 3, and framework 3 has certain volume, can by tobacco leaf vertically and at horizontal a fairly large number of tobacco leaf placed side by side.Because framework 3 is metal framework, can bear higher temperature and metal structure is stablized solid, the heat that floor heating device distributes is delivered in framework by multiple bar hole 31, and tobacco leaf can be toasted uniformly.
In addition, due to existing installation and collect tobacco leaf and generally all complete in tobacco flue-curing house, its narrow space is difficult to operation, and can first tobacco leaf be all placed in framework by framework in the outside of tobacco flue-curing house in the present invention, then first in wherein whole framework propelling tobacco flue-curing house.The process collecting tobacco leaf is also the same.Like this, facilitate the installation of personnel and collect the operation of tobacco leaf, saving the time of installing and collecting tobacco leaf, improve operating efficiency.
Floor heating device comprises floor heating pipe, the roundabout formation geothermal system in the ground of floor heating pipe in tobacco flue-curing house.Roundabout geothermal system makes the heat in floor heating pipe to distribute in tobacco flue-curing house uniformly, makes homogeneous temperature in tobacco flue-curing house, and the efficiency of flue-cured tobacco improves.
In the present embodiment, framework 3 shape is square, and framework 3 is also provided with handle 32; The quantity of flue-cured tobacco room 1 inner frame 3 is 18, and each framework 3 is provided with gap after piling up each other, and the framework 3 being located at bottom is also provided with gap with the ground of flue-cured tobacco room 1.It is 8 meters because general tobacco flue-curing house is of a size of length, width is 2.7 meters, be highly 3 meters, the each length of this framework is about 2.3 meters, width is about 1.3 meters, is highly about 0.6 meter, and being arranged so that of above-mentioned size can in the indoor placement 18 of flue-cured tobacco, the height of each framework and the height of tobacco leaf match, and farthest can place tobacco leaf.
In addition, be provided with the transmission that above-mentioned gap ensure that the indoor heat of flue-cured tobacco, heat can be recycled in each framework uniformly, ensure that the uniformity of tobacco flue-curing.
Further, owing to having filled more tobacco leaf in general framework, the heavier-weight of framework.In the present embodiment, lay guide rail at the extended spot of flue-cured tobacco chamber interior and flue-cured tobacco outdoor, by guide rail, framework is advanced or release tobacco flue-curing house, facilitate movement and the transport of whole framework like this, save the consumption of manpower, improve operating efficiency.
On the other hand, in order to improve the degree of automation further, can also conveyer belt and motor be set on guide rail, conveyer belt is driven to rotate by motor, thus full automaticly framework can be made to move forward into tobacco flue-curing house along guide rail or move to outside in tobacco flue-curing house, full automatic like this transportation frame greatly facilitates the operation of user, saves the consumption of manpower, improves operating efficiency.
In the present embodiment, adopt mechanical arm 315 automatically to be put away by framework 3 heap, which reduce the cost of a dead lift, improve the degree of automation.
Concrete, as in Fig. 3, the state of these 12 frameworks 3 is state when toasting in tobacco flue-curing house, now, first can set program in mechanical arm 315, 12 frameworks 3 are made to stack into above-mentioned state, then, conveyer belt is driven to rotate by motor, 12 frameworks 3 that heap is put well enter in tobacco flue-curing house along conveyer belt and carry out flue-cured tobacco, after flue-cured tobacco completes, conveyer belt is driven to rotate by motor, 12 frameworks 3 are sent out in tobacco flue-curing house along conveyer belt, then, utilizing mechanical arm 315 to move framework 3 makes each framework 3 place in place, tobacco leaf baked in framework 3 takes out by user again.Above-mentioned complete flue-cured tobacco and transportation complete by a central control system, as this reduced manually-operated cost, substantially increase the efficiency of flue-cured tobacco.
Flue-cured tobacco room 1 sidewall is provided with moisture exhausting port 10.Moisture exhausting port 10 is provided with dehumidifier 11.Along with the raising of baking efficiency, flue-cured tobacco room arranges corresponding moisture exhausting port and dehumidifier can improve hydrofuge performance.The sidewall of flue-cured tobacco room 1 is provided with observation window 05.In the present invention, by the state observing tobacco leaf that observation window 05 can be real-time, as color, shape etc.
As in Fig. 5, the air delivering pipeline 42 that heater comprises liquefied petroleum gas storage tank 41, is connected with liquefied petroleum gas storage tank 41, air delivering pipeline 42 is provided with manually-operated gate 43, air delivering pipeline 42 is also provided with point control valve 44, divide control valve 44 to connect heating element 45 by pipeline, heating element 45 connects the pipeline of floor heating device 20.
Liquefied petroleum gas storage tank 41 can storage liquid liquefied oil gas, during heating, opens manually-operated gate 43, power turn-on switch, then closes ignition knob simultaneously, and a point control valve 44 is opened, and start heating, the heat that heating element 45 sends is delivered to the pipeline of floor heating device 20.
In the present embodiment, the Design calcu-lation of heating equipment
Maximum calorific requirement
In the tobacco leaf maximum dehydration stage, baking calorific requirement is maximum.Calculate the dress smoke which mq of barn according to barn cigarette-filling house volume and smoke filling density, tobacco leaf maximum water holding capacity is Wq, and maximum dehydrating speed is Ws, then unit interval maximum fluid loss Sp=mqwqws; Environmentally condition, h-d figure is utilized to find water capacity dk, the dp of air inlet cold air and moisture exhausting port hot-air, enthalpy hkc, hp, dry air amount Gkg=Sp/ (dp-dk) needed for unit interval hydrofuge=mqwqws/ (dp-dk), maximum efficient heat (moisture evaporation maximum belt walks heat) Qz=GKg (hp-hkc)=(hp-hkc) mqwqws/ (dp-dk) of unit interval; Maximum calorific requirement Qgr=Qz/ η=(hp-hkc) mqwqws/ (dp-dk) η can be extrapolated by the thermal efficiency η of barn
formula (1).
Heat exchange area
The size of heat exchange area is relevant with the thermal conductivity factor of the maximum calorific requirement of barn and heat exchanger materials, the ratio that heat exchanger area of dissipation (Ag) is maximum calorific requirement and radiating tube heat transfer coefficient (Kgt) and cigarette inner tube smoke mean temperature (tej) product: Ag=Qgr/ (Kgt.tej)
formula (2).
Maximum consumption fuel quantity
After trying to achieve the maximum calorific requirement (i.e. the maximum heating load of burner) of unit interval according to design hothouse baking ability, barn unit interval maximum consumption fuel quantity (Gpm) can be calculated.
Gpm=Qgr/Qnet.ar
(3), in formula Qgr be the barn unit interval maximum calorific requirement KJ/h, Qnet.ar be the calorific capacity KJ/Kg of fuel.
Bulk curing barn tobacco leaf calorific requirement calculates:
Maximum calorific requirement
Bulk curing barn cigarette-filling house specification is 800cm × 270cm × 350cm, and cigarette-filling house's volume is 75.6m
3: smoke filling density is 59.52 ~ 66.14 ㎏/m
3, for calculating the maximum heating load of barn, get its maximum 66.14 ㎏/m here
3; The dress smoke which of bulk curing barn is the long-pending of cigarette-filling house's volume and smoke filling density: 75.6m
3× 66.14 ㎏/m
3=5000kg
The water content of fresh tobacco leaf is generally 80-90%, gets maximum W here
q=90%; Moisture content in leaves vaporization speed capping W during large hydrofuge
s=2.5%; The water capacity capping d of the waste gas that moisture exhausting port is discharged
p=0.046kg/kg dry air; The water capacity that air intake hole enters the cold air of barn removes the limit d
k=0.021kg/kg dry air; By looking into h-d figure, known discharge hot-air and the enthalpy entering cold air, hp=134.4kJ/kg, h
kc=79.8kJ/kg: the thermal efficiency general about 40% of bulk curing barn.Bring above each value into formula (1), the maximum calorific requirement of bulk curing barn can be calculated: Qgr=609749.45kJ/h.
In the present embodiment, using liquefied petroleum gas as fuel,
The calory burning of liquid liquefied petroleum gas is: 45217-46055kJ/Kg,
Can be regarded as unit interval consumption liquefied petroleum gas is 13.24-13.48Kg/h by formula (3) Gpm=Qgr/Qnet.ar, in the present embodiment, in tobacco flue-curing house, need the tobacco leaf fresh tobacco leaves of general 15000 jin being roasted into 1500 jin.
Tobacco flue-curing presses upper, middle and lower three positions average 6 days, discharges 90% moisture content in leaves, then the dry cigarette of per kilogram needs liquefied petroleum tolerance for (13.24-13.48Kg/h)/(48h × 0.6 × 0.9)=0.51-0.52Kg.
Therefore, the dry cigarette of per kilogram needs liquefied petroleum gas to be 0.51-0.52Kg.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (7)
1. the upright apparatus for baking in bulk of cage type tobacco leaf, is characterized in that, comprises the flue-cured tobacco room (1) being provided with framework (3), and described framework (3) is for metal framework and its surface is provided with multiple bar hole (31); Described flue-cured tobacco room (1) inner and flue-cured tobacco room (1) outside be extended with guide rail, framework (3) is located on guide rail; Described framework (3) is also provided with the mechanical arm (315) for stacking framework (3) outward;
Tobacco flue-curing house also comprises is located at ground floor heating device (20); Floor heating device (20) is water floor heating device, and described floor heating device (20) connects heater, and heater is LP gas fuel heater.
2. the upright apparatus for baking in bulk of a kind of cage type tobacco leaf according to claim 1, is characterized in that: described floor heating device (20) comprises floor heating pipe, the roundabout formation geothermal system in the ground of floor heating pipe in tobacco flue-curing house.
3. the upright apparatus for baking in bulk of a kind of cage type tobacco leaf according to claim 2, is characterized in that: described framework (3) shape is square, framework (3) is also provided with handle (32);
The quantity of flue-cured tobacco room (1) inner frame (3) is 18, and each framework (3) is provided with gap after piling up each other, and the ground of the framework (3) and flue-cured tobacco room (1) of being located at bottom is also provided with gap.
4. the upright apparatus for baking in bulk of a kind of cage type tobacco leaf according to claim 3, is characterized in that: described flue-cured tobacco room (1) sidewall is provided with moisture exhausting port (10).
5. the upright apparatus for baking in bulk of a kind of cage type tobacco leaf according to claim 4, is characterized in that: described moisture exhausting port (10) is provided with dehumidifier (11).
6. the upright apparatus for baking in bulk of a kind of cage type tobacco leaf according to claim 2, it is characterized in that: the air delivering pipeline (42) that described heater comprises liquefied petroleum gas storage tank (41), is connected with liquefied petroleum gas storage tank (41), air delivering pipeline (42) is provided with manually-operated gate (43), air delivering pipeline (42) is also provided with a point control valve (44), divide control valve (44) to connect heating element (45) by pipeline, heating element (45) connects the pipeline of floor heating device (20).
7., according to the arbitrary described upright apparatus for baking in bulk of a kind of cage type tobacco leaf of claim 1 to 6, it is characterized in that: the dry cigarette of per kilogram needs liquefied petroleum gas to be 0.51-0.52Kg.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510759190.XA CN105286069A (en) | 2015-11-10 | 2015-11-10 | Net cage type tobacco leaf vertical bulk curing device |
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| CN201510759190.XA CN105286069A (en) | 2015-11-10 | 2015-11-10 | Net cage type tobacco leaf vertical bulk curing device |
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| CN105286069A true CN105286069A (en) | 2016-02-03 |
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| CN105807816A (en) * | 2016-02-23 | 2016-07-27 | 中国烟草总公司广东省公司 | Baking apparatus temperature control circuit |
| CN112315006A (en) * | 2020-11-15 | 2021-02-05 | 云南省烟草农业科学研究院 | Air source heat pump curing barn with heat storage function and modulation control method thereof |
| CN112315005A (en) * | 2020-10-14 | 2021-02-05 | 西安圣华农业科技股份有限公司 | Baking equipment for tobacco leaf processing |
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Application publication date: 20160203 |
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