CN114002038B - Independent heating type tobacco sample preparation device with fixed water content and preparation method - Google Patents
Independent heating type tobacco sample preparation device with fixed water content and preparation method Download PDFInfo
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- CN114002038B CN114002038B CN202111407484.8A CN202111407484A CN114002038B CN 114002038 B CN114002038 B CN 114002038B CN 202111407484 A CN202111407484 A CN 202111407484A CN 114002038 B CN114002038 B CN 114002038B
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- 241000208125 Nicotiana Species 0.000 title claims abstract description 76
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims description 45
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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Abstract
The invention discloses an independent heating type tobacco sample preparation device with fixed water content and a preparation method. According to the invention, manual intervention is reduced, the stability of a humidifying effect is improved, the convenience of preparing the tobacco sample is improved, the controllability of the moisture content of the prepared tobacco sample is ensured, and multiple tobacco samples with different fixed moisture contents can be prepared simultaneously through the independent steam humidifying assembly and the corresponding conveying assembly, so that the defects of excessive and complicated flow in the current humidifying and measuring processes of the tobacco sample are overcome, and the advantages of automation and integration of the device are highlighted.
Description
Technical Field
The invention relates to the field of cigarette manufacturing, in particular to an independent heating type tobacco sample preparation device with fixed water content and a preparation method.
Background
In the cigarette manufacturing industry, the moisture control of tobacco is an extremely important index, and the moisture content of the tobacco has a great influence on the sensory quality of the smoking of consumers.
In the actual production process, the moisture content of the tobacco is usually used as a quantification standard, the moisture content of the tobacco processed by each procedure is very strict in a production line of a cigarette factory, in the detection process of the moisture content of the tobacco in a laboratory, due to the limitation of actual experimental conditions, only a tobacco sample with one moisture content can be prepared at each time, the efficiency is very low, meanwhile, the preparation process of the tobacco sample is complicated, and in the preparation process, due to the influence of the moisture in the air, the continuity requirement of the connection of the whole process is relatively high, so that a large gap exists between the moisture content of the tobacco obtained in practice and the moisture content prepared in a plan after the preparation is often finished.
Disclosure of Invention
In view of the above, the invention aims to provide an independent heating type device and method for preparing a tobacco sample with fixed water content, so as to solve the problems of excessively complicated process, more uncontrollable factors and lower preparation efficiency in preparing a tobacco sample with a certain water content.
The technical scheme adopted by the invention is as follows:
in a first aspect, an independently heated tobacco sample preparation device with a fixed moisture content comprises: a plurality of steam humidifying components, a conveying component, a weighing component, an electric control and display component, a shell and a sample mesh screen for placing tobacco samples; wherein each steam humidifying component corresponds to one conveying component;
The steam humidifying assembly comprises a heating pipe and a water tank, wherein the heating pipe is positioned in the shell; wherein the heating pipe is arranged at the bottom of the water tank, and a porous ventilation component is arranged in the water tank; the upper port of the water tank is communicated with the top opening of the shell and is used for placing the sample mesh screen;
The conveying assembly comprises a clamp, a supporting rod, a rotating platform, a lifting rod and a driving part; the clamp is fixed on the supporting rod and arranged on the top of the shell and used for clamping the sample mesh screen; the lower end of the supporting rod is connected with the lifting rod and moves up and down through the lifting rod; the lifting rod is fixed at the center of the rotating platform, and the driving component is used for driving the lifting rod and the rotating platform; the rotating platform, the lifting rod and the driving part are all positioned in the shell;
The weighing assembly is positioned in the geometric center of the top surface of the shell and is used for weighing and transmitting mass information of the sample mesh screen and the tobacco sample;
The electric control and display assembly is embedded on the shell and is respectively connected with the steam humidifying assembly, the conveying assembly and the weighing assembly in an electric signal mode.
In at least one possible implementation, the sample mesh screen is of a cylindrical structure, and a mesh screen sheet is installed at the axial middle position of the cylinder.
In at least one possible implementation manner, the sample mesh screen is divided into four parts of an upper part, a middle lower part and a lower part along the axial direction of the cylinder, wherein the diameters of the upper part and the middle lower part are larger than those of the middle part and the lower part, and the mesh screen piece is positioned in the middle part.
In at least one possible implementation, the bottom of the sample mesh screen is provided with a support ring for contacting the weighing assembly.
In at least one possible implementation, the conveying assembly further comprises a fixing bracket, and the supporting rod is connected with the clamp through the fixing bracket.
In at least one possible implementation manner, a rubber pad is arranged at the joint of the top of the shell and the supporting rod, and is used for preventing the supporting rod from being in hard contact with the surface of the shell in the lifting process.
In at least one possible implementation manner, the weighing assembly comprises an electronic balance and a protective cover, wherein the protective cover is arranged outside the electronic balance and is used for protecting the electronic balance.
In at least one possible implementation, the protective cover is made of aluminum sheet and is arranged around the electronic balance.
In at least one possible implementation manner, the electric control and display assembly comprises a plurality of control areas corresponding to the steam humidifying assembly and the conveying assembly one by one, a screen area for displaying information and a keyboard area for inputting information.
In a second aspect, a method for preparing an aqueous tobacco sample based on the aforementioned preparation device, comprises:
initializing a preparation device and placing an empty sample mesh screen on a steam humidifying assembly;
Controlling a heating pipe of the steam humidifying component to heat liquid water in the water tank to continuously generate steam, so that an empty sample mesh screen is humidified;
Starting a transmission assembly to move the humidified sample mesh screen onto a weighing assembly for first weighing, and recording initial mass;
placing the tobacco sample to be humidified in an empty sample mesh screen for secondary weighing, and recording the mass before humidification;
Starting a transmission assembly to place a sample mesh screen filled with a sample on a steam humidifying assembly, inputting a preset tobacco water content on an electric control and display assembly, and estimating the required humidifying time and starting humidifying timing by the electric control and display assembly according to a pre-stored preset algorithm;
After the humidification timing is finished, preparing a water-containing tobacco sample, starting a transmission assembly to move a sample mesh screen to a weighing assembly for weighing for the third time, and recording the mass after humidification.
The main design concept of the invention is that the preparation links of liquid heating, steam humidification, weighing and the like are uniformly completed through the preparation devices integrated with a plurality of independent steam humidification components, a conveying component, a sample mesh screen, a shared weighing component and an electric control and display component, so that the preparation difficulty of tobacco samples is greatly reduced. According to the invention, manual intervention is reduced, the stability of a humidifying effect is improved, the convenience of preparing the tobacco sample is improved, the controllability of the moisture content of the prepared tobacco sample is ensured, and multiple tobacco samples with different fixed moisture contents can be prepared simultaneously through the independent steam humidifying assembly and the corresponding conveying assembly, so that the defects of excessive and complicated flow in the current humidifying and measuring processes of the tobacco sample are overcome, and the advantages of automation and integration of the device are highlighted.
Further, by means of homogenizing treatment and the like on the water vapor, the tobacco sample can be uniformly contacted with the water vapor in the humidifying process, and the uniformity of the humidifying effect of the tobacco sample is improved.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 is an overall schematic diagram of an independent heating type tobacco sample preparation device with fixed water content, which is provided by an embodiment of the invention;
Fig. 2 is an exploded view of a vapor humidification assembly provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a transfer assembly according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an electronic control and display assembly according to an embodiment of the present invention;
Fig. 5 is a flow chart of a method for preparing an aqueous tobacco sample according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The invention provides an embodiment of an independent heating type tobacco sample preparation device with fixed water content, in particular to a device shown in figure 1, which comprises the following components: a plurality of vapor humidification modules 1, a delivery module 2, a weighing module 3, an electronic control and display module 4, a housing 5, and sample mesh screens 2-6. The number of the steam humidifying assemblies can be flexibly set according to actual requirements, for example, at least 2, three in the illustration can be provided, and of course, other numbers can be provided, and each steam humidifying assembly 1 is correspondingly provided with one conveying assembly 2.
Specifically, as shown in fig. 2, the steam humidifying assembly 1 mainly comprises a heating pipe 1-2 and a water tank 1-3 which are positioned in the shell 5; wherein the heating pipe 1-2 is arranged at the bottom of the water tank 1-3. The upper port of the water tank 1-3 for placing the sample mesh screen 2-6 is communicated with a through hole 5-1 correspondingly arranged on the top of the shell 5, and the function of the sample mesh screen 2-6 is to place tobacco samples.
In actual operation, a proper amount of liquid water can be added into the water tank 1-3 and the heating pipe 1-2 inside the water tank is immersed, when the preparation device is electrified and starts working, the heating pipe 1-2 is in a heating state, and when the heating pipe 1-2 reaches 80 ℃, water vapor can be generated and rises upwards along the water tank 1-3. In some preferred embodiments, the porous and vapor-permeable member 1-1 may be placed in the water tub 1-3 to make the generated and rising vapor uniform, and more preferably, at least two porous and vapor-permeable members 1-1 (three are shown) may be placed in the upper half of the water tub 1-3, and the problem of vapor non-uniformity may be significantly improved by the multi-layered porous and vapor-permeable members.
Specifically, the sample mesh screens 2-6 may preferably have a cylindrical structure, and mesh screen sheets (not shown) are installed at the axial middle position of the cylinder, and it is understood that the mesh size of the mesh screen sheets is not larger than the minimum size of the tobacco sample; further, the sample mesh screen 2-6 is divided into four parts of an upper part, a middle lower part and a lower part along the axial direction, wherein the diameters of the upper part, the middle lower part and the middle lower part are larger than those of the middle part and the lower part, and the mesh screen is positioned in the middle part, so that the humidifying effect of tobacco samples paved on the mesh screen is more uniform. On the basis of this concept, it will be appreciated that there is a space in the middle for the transfer assembly to grip the sample mesh 2-6. In addition, to ensure more accurate weighing measurements, a support ring may be provided at the bottom of the sample mesh 2-6 to prevent the sample mesh with moisture from coming into direct contact with the weighing assembly.
As to the transfer assembly 2, as shown in fig. 3, it is mainly composed of a support bar 2-1, a rotating platform 2-4, a clamp 2-7, a lifting rod 2-3 and a driving part; the clamp 2-7 for clamping the sample mesh screen 2-6 is fixed on the support rod 2-1 and is arranged on the top of the shell 5, and the lower end of the support rod 2-1 is connected with the lifting rod 2-3 and can move up and down through the lifting rod 2-3; the lifting rod 2-2 is fixed at the center of the rotating platform 2-2, and the driving component is used for driving the lifting rod 2-3 and the rotating platform 2-4 to move up and down and rotate, wherein the rotating platform 2-4, the lifting rod 2-3 and the driving component are all located in the shell 5. Specifically, the driving means includes a lift motor 2-8 for driving the lift lever 2-3 and a rotating motor 2-9 for driving the rotating platform 2-4. Further, it is also conceivable to connect the support bar 2-1 with the jig 2-7 by the fixing bracket 2-5; in addition, a rubber cushion 2-2 can be arranged at the joint of the top of the shell 5 and the supporting rod 2-1, so that the supporting rod 2-1 is prevented from being in hard contact with the surface of the shell 5 in the lifting process.
Referring to fig. 1, the weighing assembly 3 is located at the geometric center of the top surface of the housing 5, and is mainly used for weighing and transmitting weight information of the tobacco sample in the experimental process. In particular, the weighing assembly 3 may comprise a high-precision electronic balance and a protective cover, which can be used mainly to prevent other foreign bodies from scattering on the electronic balance, resulting in the experimental values being affected and even the related components being damaged. Preferably, the protective cover may be made of an aluminum sheet and is disposed around the electronic balance.
The electric control and display assembly 4 is embedded on the housing 5, and is respectively connected with the steam humidifying assembly 1, the conveying assembly 2 and the weighing assembly 3 in an electric signal manner, and is mainly used for performing heating control, conveying action control, weighing data acquisition and input and display of related numerical parameters, and specifically can refer to a region (a region indicated by a dotted line frame) shown in fig. 4, and comprises a plurality of control regions 4-1 which are in one-to-one correspondence with the steam humidifying assembly 1 and the conveying assembly 2, and can be mainly used for independently controlling related movement and heating components, and physical controls such as buttons and the like when being implemented; the screen 4-2 is mainly used for displaying the information such as the moisture content of the tobacco sample, and mainly refers to a screen panel, preferably a touch screen; and the keyboard 4-3 is mainly used for inputting the information such as the water content, the humidification time and the like, and can be mainly realized by a physical keyboard, keys and the like.
In actual operation, the electric control and display component 4 can refer to the configuration of the existing detection instrument in the field, for example, buttons, dials, etc. with functions of on-off, action start-stop, data recording, etc. can be arranged on the panel for the above components; and, based on the description of the foregoing components, corresponding electrical configurations such as a motor and driving circuit module, a weighing module, a transmission control module, a weight recording and data processing module, a display module, etc. may be designed, for example, the motor and the circuit driving module may be used to control the motor motion in the transmission component, and the weighing module and the weight recording and data processing module may be used to collect weight values and perform data processing. It will be appreciated by those skilled in the art that the foregoing functional modules are well-established in the art of detection apparatuses, and the present invention is not repeated and limited thereto.
In combination with the above-mentioned embodiments of the preparation device, the present invention further provides a process flow of the preparation method of the aqueous tobacco sample by using the aforementioned independently heating type fixed-water-content tobacco sample preparation device, as shown in fig. 5:
S0, initializing a preparation device, and placing an empty sample mesh screen on a steam humidifying assembly; specifically, the preparation device can be connected to a power supply, water with a certain height (without passing through the heating pipe) is injected into the water tank, after the injection is finished, the angle position of the clamp of the conveying assembly can be adjusted, and the empty sample mesh screen clamped by the clamp is placed at the upper port of the water tank of the steam humidifying assembly.
Step S1, controlling a heating pipe of a steam humidifying component to heat liquid water in a water tank so as to continuously generate steam, and humidifying an empty sample mesh screen; in actual operation, the switch at the control area of the corresponding steam humidifying component can be opened through the electric control and display component, and the corresponding steam humidifying component is in a standby state; then pressing a heating button corresponding to the steam humidifying component, starting the heating pipe to work, generating steam, enabling the sample mesh screen wall and the mesh screen part to cover water mist by the steam through the water tank, and completing humidification of the empty sample mesh screen after a certain time.
S2, starting a transmission assembly to move the humidified sample mesh screen onto a weighing assembly for first weighing, and recording initial mass; in actual operation, the humidified empty sample mesh screen can be conveyed to the weighing assembly through the conveying control button corresponding to a certain conveying assembly on the electric control and display assembly, and the current initial mass m 0 is recorded by pressing the weighing button.
S3, placing the tobacco sample to be humidified in an empty sample mesh screen for secondary weighing, and recording the mass before humidification; in actual operation, standard tobacco sample M g (tobacco sample with zero water content, which is generally obtained by adopting the national standard '2-hour 100 ℃ oven method') can be placed in an empty sample mesh screen, and a weight recording button can be pressed again to obtain the mass M 1 before humidification.
S4, starting a transmission assembly to place a sample mesh screen filled with a sample on a steam humidifying assembly, inputting a preset tobacco water content on an electric control and display assembly, and estimating the required humidifying time t and starting humidifying timing by the electric control and display assembly according to a pre-stored preset algorithm; in actual operation, a sample mesh screen loaded with M grams of tobacco samples can be conveyed to the upper port of a water tank of a steam humidifying assembly for humidifying through a conveying control button corresponding to a certain conveying assembly, and the time required by the humidification is obtained by utilizing a preset tobacco sample humidifying time prediction algorithm.
S5, after humidification and timing are finished, preparing a water-containing tobacco sample, starting a transmission assembly to move a sample mesh screen to a weighing assembly for weighing for the third time, and recording the mass after humidification; in actual operation, the sample mesh screen after sample humidification can be conveyed to the weighing assembly again through the conveying control button of a certain conveying assembly corresponding to the electric control and display assembly, and the weight recording button is pressed to record the mass m 2 after humidification.
After the third weighing, the recorded initial mass, the recorded mass before humidification and the recorded mass after humidification can be used for obtaining the actual water content of the prepared sample.
Specifically, the actual water content H of the prepared sample obtained by using the recorded initial mass, the pre-humidification mass and the post-humidification mass can be calculated by referring to the following formula:
Regarding the tobacco sample humidification time prediction algorithm, which is not the focus of the present invention, in actual operation, a curve of the relationship between the moisture content and the humidification time of M grams of tobacco samples can be fitted according to several experimental data, and the fitting method only provides reference: firstly, preparing N.times.M grams of standard tobacco samples with fixed quality through national standard '100 ℃ for 2 hours', dividing the standard tobacco samples into N parts after the preparation, setting a plurality of humidification timings by taking 30 seconds as a humidification time gradient, carrying out humidification treatment on the tobacco samples, and recording the relationship between the quality change and the humidification time as follows:
TABLE 1 moisture content and humidification time experimental data for M g tobacco samples
According to the experimental data, a relationship curve of the moisture content and the humidifying time of the tobacco sample with the fixed mass M g is obtained through nonlinear fitting. By combining the preparation device, the relation curve can be stored into the preparation device in advance through the electric control and display assembly and used for timing the humidifying time in the following actual preparation process, so that the stability of the water content of the prepared tobacco sample can be ensured.
In summary, the main design concept of the invention is to uniformly complete the preparation links of liquid heating, steam humidification, weighing and the like by integrating a plurality of independent steam humidification components, a conveying component, a sample mesh screen, and a common preparation device of a weighing component, an electric control and display component, thereby greatly reducing the preparation difficulty of tobacco samples. According to the invention, manual intervention is reduced, the stability of a humidifying effect is improved, the convenience of preparing the tobacco sample is improved, the controllability of the moisture content of the prepared tobacco sample is ensured, and multiple tobacco samples with different fixed moisture contents can be prepared simultaneously through the independent steam humidifying assembly and the corresponding conveying assembly, so that the defects of excessive and complicated flow in the current humidifying and measuring processes of the tobacco sample are overcome, and the advantages of automation and integration of the device are highlighted.
In the embodiments of the present invention, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relation of association objects, and indicates that there may be three kinds of relations, for example, a and/or B, and may indicate that a alone exists, a and B together, and B alone exists. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of the following" and the like means any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
The construction, features and effects of the present invention are described in detail according to the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention, and it should be understood that the technical features of the above embodiment and the preferred mode thereof can be reasonably combined and matched into various equivalent schemes by those skilled in the art without departing from or changing the design concept and technical effects of the present invention; therefore, the invention is not limited to the embodiments shown in the drawings, but is intended to be within the scope of the invention as long as changes made in the concept of the invention or modifications to the equivalent embodiments do not depart from the spirit of the invention as covered by the specification and drawings.
Claims (10)
1. An independently heated fixed moisture content tobacco sample preparation device, comprising: a plurality of steam humidifying components, a conveying component, a weighing component, an electric control and display component, a shell and a sample mesh screen for placing tobacco samples; wherein each steam humidifying component corresponds to one conveying component;
The steam humidifying assembly comprises a heating pipe and a water tank, wherein the heating pipe is positioned in the shell; wherein the heating pipe is arranged at the bottom of the water tank, and a porous ventilation component is arranged in the water tank; the upper port of the water tank is communicated with the top opening of the shell and is used for placing the sample mesh screen;
The conveying assembly comprises a clamp, a supporting rod, a rotating platform, a lifting rod and a driving part; the clamp is fixed on the supporting rod and arranged on the top of the shell and used for clamping the sample mesh screen; the lower end of the supporting rod is connected with the lifting rod and moves up and down through the lifting rod; the lifting rod is fixed at the center of the rotating platform, and the driving component is used for driving the lifting rod and the rotating platform; the rotating platform, the lifting rod and the driving part are all positioned in the shell;
The weighing assembly is positioned in the geometric center of the top surface of the shell and is used for weighing and transmitting mass information of the sample mesh screen and the tobacco sample;
The electric control and display assembly is embedded on the shell and is respectively connected with the steam humidifying assembly, the conveying assembly and the weighing assembly in an electric signal mode.
2. The apparatus for preparing a tobacco sample with independently heating and fixed water content according to claim 1, wherein the sample mesh screen has a cylindrical structure, and a mesh screen is installed at the axial middle part of the cylinder.
3. The apparatus according to claim 2, wherein the sample mesh screen is divided into four parts of an upper part, a middle lower part and a lower part along the axial direction of the cylinder, wherein the diameters of the upper part and the middle lower part are larger than those of the middle part and the lower part, and the mesh screen is positioned in the middle part.
4. The self-contained heated fixed moisture content tobacco sample preparation device of claim 1, wherein the bottom of the sample screen is provided with a support ring for contacting the weighing assembly.
5. The independently heated fixed moisture content tobacco sample preparation device of claim 1, wherein the transfer assembly further comprises a fixed bracket through which the support rod is connected to the clamp.
6. The independently heated tobacco sample preparation device with fixed moisture content according to claim 1, wherein a rubber pad is arranged at the joint of the top of the shell and the supporting rod, and is used for preventing the supporting rod from being in hard contact with the surface of the shell in the lifting process.
7. The independently heated fixed moisture content tobacco sample preparation device of claim 1, wherein the weighing assembly comprises an electronic balance and a protective cover disposed outside the electronic balance for protecting the electronic balance.
8. The self-contained heated fixed moisture content tobacco sample preparation device of claim 7, wherein the shield is made of aluminum sheet and is disposed around the electronic balance.
9. The independently heated fixed moisture content tobacco sample preparation device of any of claims 1-8, wherein the electronically controlled and displayed assembly comprises a plurality of control areas in one-to-one correspondence with the vapor humidification assembly and the delivery assembly, a screen area for displaying information, and a keyboard area for inputting information.
10. A method of preparing an aqueous tobacco sample based on the preparation device of any one of claims 1 to 9, comprising:
initializing a preparation device and placing an empty sample mesh screen on a steam humidifying assembly;
Controlling a heating pipe of the steam humidifying component to heat liquid water in the water tank to continuously generate steam, so that an empty sample mesh screen is humidified;
Starting a transmission assembly to move the humidified sample mesh screen onto a weighing assembly for first weighing, and recording initial mass;
placing the tobacco sample to be humidified in an empty sample mesh screen for secondary weighing, and recording the mass before humidification;
Starting a transmission assembly to place a sample mesh screen filled with a sample on a steam humidifying assembly, inputting a preset tobacco water content on an electric control and display assembly, and estimating the required humidifying time and starting humidifying timing by the electric control and display assembly according to a pre-stored preset algorithm;
After the humidification timing is finished, preparing a water-containing tobacco sample, starting a transmission assembly to move a sample mesh screen to a weighing assembly for weighing for the third time, and recording the mass after humidification.
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| Title |
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| 烤烟叶丝微波干燥特性研究;林玉红;闫亚明;罗登山;李桂贤;;烟草科技;20060420(第04期);全文 * |
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| CN114002038A (en) | 2022-02-01 |
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