A method for controlling tobacco leaf temperature and moisture content

Abstract

The present invention proposes a method for controlling the temperature and moisture content of tobacco leaves, comprising the following steps: step S101, detecting the temperature and moisture content of the tobacco leaves; step S102, comparing the ambient temperature with a preset temperature, and comparing the moisture content of the tobacco leaves with a preset moisture content; step S103, judging whether it is necessary to moisten the leaves; if so, entering step S104; if not, entering step S105; step S104, sending the tobacco leaves to a moistening room for moistening; step S105, the tobacco leaves enter a sorting process or a leaf laying and arranging process; after step S104, the following steps are also included: step S106, after a preset time, detecting the moisture content of the tobacco leaves again; step S107, when the moisture content of the tobacco leaves reaches the preset moisture content, sending the tobacco leaves out of the moistening room. Ensure that the moisture content of tobacco leaves is within the preset range before entering the sorting process or before the leaf laying and swaying procedures, increase the tensile strength, elongation and wrinkle and breakage resistance of tobacco leaves, improve the toughness and processing resistance of tobacco leaves, reduce the breakage rate of tobacco leaves in the sorting, leaf laying and swaying links and the dust on the work site, and improve the working environment.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco leaves, and in particular to a method for controlling the temperature and moisture content of tobacco leaves. Background Art

[0002] Uneven moisture content in raw tobacco affects the tobacco leaf shape structure and tobacco leaf yield index in the threshing process. The tobacco leaf crushing rate is a quality index that industrial enterprises and threshing and redrying enterprises pay attention to and an index that affects the tobacco leaf yield index. Summary of the invention

[0003] The present invention solves one of the problems existing in the existing related technologies to a certain extent. To this end, one purpose of the present invention is to propose a method for controlling the temperature and moisture content of tobacco leaves to ensure the tobacco leaf shape structure and tobacco leaf output rate indicators in the leaf beating process.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A method for controlling tobacco leaf temperature and moisture content comprises the following steps:

[0006] Step S101, detecting the temperature and moisture content of tobacco leaves;

[0007] Step S102, comparing the ambient temperature with a preset temperature, and comparing the moisture content of the tobacco leaves with a preset moisture content;

[0008] Step S103, determining whether leaf moisturizing is required;

[0009] If yes, proceed to step S104; if no, proceed to step S105;

[0010] Step S104, sending the tobacco leaves to a leaf moistening room for moistening;

[0011] Step S105, the tobacco leaves enter the sorting process or the leaf laying process;

[0012] After step S104, the following steps are also included:

[0013] Step S106, after a preset time, the moisture content of the tobacco leaves is detected again;

[0014] Step S107, when the moisture content of the tobacco leaves reaches the preset moisture content, the tobacco leaves are sent out of the leaf moistening room.

[0015] As a further improvement of the present invention, in step S102, the preset temperature is 45-55°C, and the preset moisture content is 14-16%.

[0016] As a further improvement of the present invention, step S103, the step of determining whether leaf moisturizing is required is specifically as follows:

[0017] Step S1031, if the ambient temperature meets the preset temperature requirement and the moisture content of the tobacco leaves meets the preset moisture content requirement, then proceed to step S105;

[0018] Step S1032: If the ambient temperature does not meet the preset temperature requirement and / or the moisture content of the tobacco leaves does not meet the preset moisture content requirement, proceed to step S104.

[0019] As a further improvement of the present invention, the steps of sending tobacco leaves into the leaf moistening room for moistening in step S104 are specifically as follows:

[0020] Step S1041, when the ambient temperature does not meet the preset temperature requirement and the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the temperature and moisture content adjustment procedure is entered;

[0021] Step S1042, when the ambient temperature does not meet the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the temperature adjustment program is entered;

[0022] Step S1042, when the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the moisture content adjustment program is entered.

[0023] As a further improvement of the present invention, in step S1041, when the ambient temperature does not meet the preset temperature requirement and the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the temperature and moisture content adjustment program is entered. The specific steps of the adjustment program are:

[0024] When the ambient temperature is lower than the preset temperature requirement and the moisture content of the tobacco leaves is lower than the preset moisture content requirement, high-temperature steam is introduced into the leaf moistening room to adjust the temperature and moisture content of the tobacco leaves;

[0025] When the ambient temperature is higher than the preset temperature requirement and the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the leaf moistening room is dehumidified by the dehumidification device, and the hot and humid air in the leaf moistening room is discharged by the fan;

[0026] When the ambient temperature is lower than the preset temperature requirement and the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the fan is started to discharge the air with high humidity in the leaf moistening room, and the heating component is started to increase the temperature in the leaf moistening room.

[0027] As a further improvement of the present invention, S1042, when the ambient temperature does not meet the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the steps of entering the temperature adjustment program are specifically:

[0028] When the ambient temperature is higher than the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the fan is started to discharge the air with high humidity in the leaf moistening room, and the humidifier is started to increase the humidity in the leaf moistening room;

[0029] When the ambient temperature is lower than the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the temperature in the leaf moistening room is increased by starting the heating component.

[0030] As a further improvement of the present invention, in step S1042, when the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the steps of entering the moisture content adjustment program are specifically as follows:

[0031] When the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves is lower than the preset moisture content requirement, the humidity in the leaf moistening room is increased by a humidifier;

[0032] When the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the leaf moistening room is dehumidified by a dehumidification device to reduce the humidity in the leaf moistening room.

[0033] As a further improvement of the present invention, in step S104, the preset time is 4-8 hours.

[0034] As a further improvement of the present invention, in step S101, the method for detecting the moisture content of tobacco leaves is:

[0035] Obtain tobacco leaf samples;

[0036] Testing the sample quality of tobacco leaves M1;

[0037] Drying the tobacco leaves and obtaining a sample mass M2 of the dried tobacco leaves;

[0038] By formula Get the moisture content of tobacco leaves.

[0039] Compared with the prior art, the present invention has at least the following beneficial effects:

[0040] 1. The present invention proposes a method for controlling the temperature and moisture content of tobacco leaves, which ensures that the moisture content of tobacco leaves is within a preset range before entering the sorting process or before the leaf laying and swaying procedures, thereby increasing the tensile strength, elongation and wrinkle and breakage resistance of tobacco leaves, improving the toughness and processing resistance of tobacco leaves, reducing the breakage rate of tobacco leaves in the sorting and leaf laying and swaying links and dust on the work site, and improving the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a flow chart of a method for controlling tobacco leaf temperature and moisture content in an embodiment. DETAILED DESCRIPTION

[0042] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific embodiments of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed by the present invention.

[0043] like Figure 1 , a method for controlling tobacco leaf temperature and moisture content, comprising the following steps:

[0044] Step S101, detecting the temperature and moisture content of tobacco leaves;

[0045] Step S102, comparing the ambient temperature with a preset temperature, and comparing the moisture content of the tobacco leaves with a preset moisture content;

[0046] Step S103, determining whether leaf moisturizing is required;

[0047] If yes, proceed to step S104; if no, proceed to step S105;

[0048] Step S104, sending the tobacco leaves to a leaf moistening room for moistening;

[0049] Step S105, the tobacco leaves enter the sorting process or the leaf laying process;

[0050] After step S104, the following steps are also included:

[0051] Step S106, after a preset time, the moisture content of the tobacco leaves is detected again;

[0052] Step S107, when the moisture content of the tobacco leaves reaches the preset moisture content, the tobacco leaves are sent out of the leaf moistening room.

[0053] When the moisture content of tobacco leaves does not meet the preset moisture content, it means that the moisture content of tobacco leaves is too low or too high. If the moisture content of tobacco leaves is too low, it will affect the tobacco leaf shape structure and tobacco leaf yield index in the leaf threshing process; if the moisture content of tobacco leaves is too high, it is easy to mold.

[0054] The present invention proposes a method for controlling the temperature and moisture content of tobacco leaves, which ensures that the moisture content of the tobacco leaves is within a preset moisture content range before entering a sorting process or before the leaf laying and swaying procedures, thereby increasing the tensile strength, elongation and wrinkle and breakage resistance of the tobacco leaves, improving the toughness and processing resistance of the tobacco leaves, reducing the breakage rate of the tobacco leaves in the sorting and leaf laying and swaying links and dust on the operation site, and improving the working environment.

[0055] In step S102, the preset temperature is 45-55°C, and the preset moisture content is 14-16%.

[0056] In step S102, the ambient temperature will directly affect the tobacco leaves, and the ambient temperature is regarded as the temperature of the tobacco leaves.

[0057] Step S103, determining whether leaf moistening is required is as follows:

[0058] Step S1031, if the ambient temperature meets the preset temperature requirement and the moisture content of the tobacco leaves meets the preset moisture content requirement, then proceed to step S105;

[0059] Step S1032: If the ambient temperature does not meet the preset temperature requirement and / or the moisture content of the tobacco leaves does not meet the preset moisture content requirement, proceed to step S104.

[0060] If the ambient temperature is too low, the temperature of the tobacco leaves is also low, and the tobacco leaves are hard; if the ambient temperature is too high, the temperature of the tobacco leaves is also high, and the tobacco leaves are soft. The hardness of different tobacco leaves will also affect the tobacco leaf shape structure and tobacco leaf yield index in the subsequent leaf threshing process. Controlling the temperature within the preset temperature range can effectively ensure the tobacco leaf shape structure and tobacco leaf yield index in the leaf threshing process.

[0061] In step S104, the steps of sending tobacco leaves into the leaf moistening room for moistening are specifically as follows:

[0062] Step S1041, when the ambient temperature does not meet the preset temperature requirement and the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the temperature moisture content adjustment procedure is entered;

[0063] Step S1042, when the ambient temperature does not meet the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the temperature adjustment program is entered;

[0064] Step S1042, when the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the moisture content adjustment program is entered.

[0065] The temperature and moisture content can be adjusted in the leaf moistening room so that the moisture content of the tobacco leaves is within the preset moisture content range and the temperature is within the preset temperature range before entering the sorting process, thereby ensuring the tobacco leaf shape structure and tobacco leaf output rate indicators in the tobacco leaf threshing process.

[0066] Step S1041, when the temperature of the tobacco leaves does not meet the preset temperature requirement and the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the steps of entering the temperature moisture content adjustment program are specifically as follows:

[0067] When the ambient temperature is lower than the preset temperature requirement and the moisture content of the tobacco leaves is lower than the preset moisture content requirement, high-temperature steam is introduced into the leaf moistening room to adjust the temperature and moisture content of the tobacco leaves;

[0068] When the ambient temperature is higher than the preset temperature requirement and the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the leaf moistening room is dehumidified by the dehumidification device, and the hot and humid air in the leaf moistening room is discharged by the fan;

[0069] When the ambient temperature is lower than the preset temperature requirement and the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the fan is started to reduce the humidity in the leaf moistening room, and the heating component is started to increase the temperature in the leaf moistening room.

[0070] The leaf moistening room is provided with an inlet, which is connected to the steam pipe of the boiler room, and can be used to pass high-temperature steam into the leaf moistening room. The temperature and moisture content in the leaf moistening room can be adjusted by inputting high-temperature steam. A control valve is provided at the inlet for opening and closing the inlet. In some embodiments, the pressure of the saturated steam is 0.4-0.6MPa.

[0071] A fan is provided on the leaf moistening room, which can discharge the humidity and heat in the leaf moistening room, thereby reducing the temperature and humidity in the leaf moistening room.

[0072] A dehumidification device is provided on the leaf moistening room to reduce the humidity in the leaf moistening room.

[0073] A heating component is provided on the leaf moistening room to increase the temperature inside the leaf moistening room.

[0074] When the ambient temperature is lower than the preset temperature requirement and the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the humidity in the leaf moistening room can be reduced by starting the fan, but at the same time the temperature in the leaf moistening room will also decrease. At this time, the heating component can be started at the same time to increase the temperature in the leaf moistening room.

[0075] S1042, when the ambient temperature does not meet the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the steps of entering the temperature adjustment program are as follows:

[0076] When the ambient temperature is higher than the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the fan is started to discharge the air with a higher temperature in the moistening room, and the humidifier is started to increase the humidity in the moistening room;

[0077] When the ambient temperature is lower than the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the temperature in the leaf moistening room is increased by starting the heating component.

[0078] When the fan is started, the temperature in the leaf moistening room can be lowered, and at the same time the humidity in the leaf moistening room can be lowered. At this time, the humidifier can be started to increase the moisture content.

[0079] Step S1042, when the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the steps of entering the moisture content adjustment program are as follows:

[0080] When the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves is lower than the preset moisture content requirement, the humidifier outputs high-pressure air atomized water to increase the humidity in the leaf moistening room; and the temperature of the soft water output from the humidifier is controlled to be 75-80℃, and the water pressure is 0.3-0.5MPa.

[0081] When the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the leaf moistening room is dehumidified by a dehumidification device to reduce the humidity in the leaf moistening room.

[0082] A humidifier is installed in the leaf moistening room to increase the humidity in the leaf moistening room.

[0083] A dehumidification device is installed in the leaf moistening room to reduce the humidity in the leaf moistening room.

[0084] In step S106, the preset time is 4-8 hours.

[0085] In step S101, the method for detecting the moisture content of tobacco leaves is:

[0086] Obtain tobacco leaf samples;

[0087] Testing the sample quality of tobacco leaves M1;

[0088] Drying the tobacco leaves and obtaining a sample mass M2 of the dried tobacco leaves;

[0089] By formula Get the moisture content of tobacco leaves.

[0090] In some embodiments, a controller is also included, and the controller is electrically connected to the fan, control valve, dehumidification device and heating component.

[0091] The controller controls the opening and closing of the control valve to control whether the steam in the boiler room is introduced into the leaf moistening room. The circulating air volume of the fan is controlled, and the dehumidification device and the heating component are synchronously controlled to control the ambient temperature and humidity in the leaf moistening room. The temperature in the leaf moistening room is controlled to be 55-65°C and the humidity is controlled to be 85-95%, so that the tobacco leaves in the leaf moistening room can reach the preset temperature and preset moisture content requirements after a sufficient time. In this embodiment, 4-8 hours is used as a leaf moistening cycle, and the moisture content of the tobacco leaves can be tested again after the tobacco leaves are placed in the leaf moistening room for 4-8 hours.

[0092] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on this scheme should be regarded as within the scope of protection of this patent.

Claims

1. A method for controlling tobacco leaf temperature and moisture content, characterized in that: The steps include: Step S101, detecting the temperature and moisture content of tobacco leaves; Step S102, comparing the ambient temperature with a preset temperature, and comparing the moisture content of the tobacco leaves with a preset moisture content; Step S103, determining whether leaf moisturizing is required; If yes, proceed to step S104; if no, proceed to step S105; Step S104, sending the tobacco leaves to a leaf moistening room for moistening; Step S105, the tobacco leaves enter the sorting process or the leaf laying process; After step S104, the following steps are also included: Step S106, after a preset time, the moisture content of the tobacco leaves is detected again; Step S107, when the moisture content of the tobacco leaves reaches the preset moisture content, the tobacco leaves are sent out of the leaf moistening room.

2. A method for controlling tobacco leaf temperature and moisture content according to claim 1, characterized in that: In step S102, the preset temperature is 45-55°C, and the preset moisture content is 14-16%.

3. The method for controlling the temperature and moisture content of tobacco leaves according to claim 1, characterized in that: Step S103, determining whether leaf moistening is required is as follows: Step S1031, if the ambient temperature meets the preset temperature requirement and the moisture content of the tobacco leaves meets the preset moisture content requirement, then proceed to step S105; Step S1032: If the ambient temperature does not meet the preset temperature requirement and / or the moisture content of the tobacco leaves does not meet the preset moisture content requirement, proceed to step S104.

4. A method for controlling tobacco leaf temperature and moisture content according to claim 1, characterized in that: In step S104, the steps of sending tobacco leaves into the leaf moistening room for moistening are specifically as follows: Step S1041, when the ambient temperature does not meet the preset temperature requirement and the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the temperature and moisture content adjustment procedure is entered; Step S1042, when the ambient temperature does not meet the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the temperature adjustment program is entered; Step S1042, when the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the moisture content adjustment program is entered.

5. A method for controlling tobacco leaf temperature and moisture content according to claim 4, characterized in that: Step S1041, when the temperature of the tobacco leaves does not meet the preset temperature requirement and the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the steps of entering the temperature and moisture content adjustment program are specifically as follows: When the ambient temperature is lower than the preset temperature requirement and the moisture content of the tobacco leaves is lower than the preset moisture content requirement, high-temperature steam is introduced into the leaf moistening room to adjust the temperature and moisture content of the tobacco leaves; When the ambient temperature is higher than the preset temperature requirement and the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the leaf moistening room is dehumidified by the dehumidification device, and the hot and humid air in the leaf moistening room is discharged by the fan; When the ambient temperature is lower than the preset temperature requirement and the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the fan is started to discharge the air with high humidity in the leaf moistening room, and the heating component is started to increase the temperature in the leaf moistening room.

6. A method for controlling tobacco leaf temperature and moisture content according to claim 4, characterized in that: S1042, when the ambient temperature does not meet the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the steps of entering the temperature adjustment program are as follows: When the ambient temperature is higher than the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the hot and humid air in the leaf moistening room is discharged by starting the fan, and the humidifier is started to increase the humidity in the leaf moistening room; When the ambient temperature is lower than the preset temperature requirement, but the moisture content of the tobacco leaves meets the preset moisture content requirement, the temperature in the leaf moistening room is increased by starting the heating component.

7. A method for controlling tobacco leaf temperature and moisture content according to claim 4, characterized in that: Step S1042, when the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves does not meet the preset moisture content requirement, the steps of entering the moisture content adjustment program are as follows: When the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves is lower than the preset moisture content requirement, the humidity in the leaf moistening room is increased by a humidifier; When the ambient temperature meets the preset temperature requirement, but the moisture content of the tobacco leaves is higher than the preset moisture content requirement, the leaf moistening room is dehumidified by a dehumidification device to reduce the humidity in the leaf moistening room.

8. A method for controlling tobacco leaf temperature and moisture content according to claim 1, characterized in that: In step S104, the preset time is 4-8 hours.

9. A method for controlling tobacco leaf temperature and moisture content according to claim 1, characterized in that: In step S101, the method for detecting the moisture content of tobacco leaves is: Obtain tobacco leaf samples; Testing the sample quality of tobacco leaves M1; Drying the tobacco leaves and obtaining a sample mass M2 of the dried tobacco leaves; By formula Get the moisture content of tobacco leaves.

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