A control method for a loose conditioning system and a loose conditioning system

Abstract

The application provides a control method for a loose rehydration system, the loose rehydration system comprising a cutting machine and a loose rehydration machine arranged in sequence along a material conveying direction, the cutting machine comprising a cutter for cutting a tobacco stack into tobacco blocks, the loose rehydration machine comprising a roller and a hot air machine, the tobacco blocks being capable of being loose rehydrated in the roller, the hot air machine being used for introducing hot air into the roller, the loose tobacco material being capable of being conveyed downstream under the driving of the roller and the hot air, the control method comprising: obtaining a pressure value applied by the cutter to the tobacco stack when the tobacco stack is cut; determining a density grade of the tobacco stack according to the pressure value; and controlling a rotating speed of the roller and a frequency of the hot air machine according to the density grade. The application can fully loosen the tobacco blocks, so that the tobacco leaves are fully contacted with water and steam, and thus the temperature and moisture content of the tobacco leaves can meet the production requirements. The application further provides a loose rehydration system.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing technology, and in particular to a control method and a loosening and rehydration system for a loosening and rehydration system. Background Technology

[0002] In cigarette production, loosening and rehydration is a crucial step. This process utilizes mechanical loosening combined with water and steam penetration to appropriately increase the temperature and moisture content of the tobacco leaves, enhancing their flexibility and processing resistance, thus facilitating subsequent processing. Before loosening and rehydrating the tobacco, the stacks are first divided into tobacco blocks using a slitting machine. These blocks then enter the loosening and rehydration machine for further loosening and rehydration.

[0003] Currently, during the production process, the density of tobacco stacks supplied by different manufacturers varies, resulting in different densities of the tobacco blocks formed after the stacks are divided. Consequently, the time required for tobacco blocks of different densities to fully loosen also varies. Existing loosening and rehumidifying machines cannot adjust the loosening time according to the different densities of tobacco blocks. When loosening and rehumidifying denser tobacco blocks, the blocks are easily not fully loosened and remain clumped. This prevents some tobacco leaves from fully contacting the water and steam in the loosening and rehumidifying machine, leading to the tobacco leaves' temperature and moisture content not meeting production requirements. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problem that current loosening and rehumidifying machines fail to adequately loosen dense tobacco clumps during rehumidification, preventing sufficient contact between the clumps and water / steam, resulting in unsatisfactory temperature and moisture content of the tobacco leaves. This invention provides a control method and a loosening and rehumidification system that fully loosens tobacco clumps, allowing for sufficient contact between the tobacco leaves and water / steam, thus ensuring that the temperature and moisture content of the tobacco leaves meet production requirements.

[0005] The present invention provides a control method for a loosening and rehydration system. The loosening and rehydration system includes a cutter and a loosening and rehydration machine arranged sequentially along the material conveying direction. The cutter includes a cutter for cutting tobacco stacks into tobacco blocks. The loosening and rehydration machine includes a drum and a hot air blower. The tobacco blocks can be loosened and rehydrated inside the drum. The hot air blower is used to introduce hot air into the drum. The loosened tobacco material can be conveyed downstream under the drive of the drum and the hot air. The control method includes:

[0006] Obtain the pressure value applied by the cutter to the tobacco stack when cutting it;

[0007] The density grade of the tobacco stack is determined based on the pressure value;

[0008] The rotational speed of the drum and the frequency of the hot air blower are controlled according to the density level.

[0009] According to another specific embodiment of the present invention, determining the density grade of the smokestack based on the pressure value includes:

[0010] Based on the pressure value being less than 40KN, the density level of the smokestack is determined to be the first density level;

[0011] Based on a pressure value greater than or equal to 40KN and less than 50KN, the density level of the smokestack is determined to be the second density level.

[0012] Based on a pressure value greater than or equal to 50 kN, the density level of the tobacco stack is determined to be the third density level.

[0013] According to another specific embodiment of the present invention, when the density grade of the smokestack is the first density grade, the density of the smokestack is 400-410 kg / m³. 3 ;

[0014] When the density grade of the smokestack is the second density grade, the density of the smokestack is 411-424 kg / m³. 3 ;

[0015] When the density grade of the smokestack is the third density grade, the density of the smokestack is 425-437 kg / m³. 3 .

[0016] According to another specific embodiment of the present invention, controlling the rotational speed of the drum and the frequency of the hot air blower based on the density grade includes:

[0017] Based on the density level of the smokestack being the first density level, the rotation speed value is set to the first rotation speed value, and the frequency value is set to the first frequency value;

[0018] Based on the density level of the smokestack being the second density level, the rotation speed value is set to the second rotation speed value, and the frequency value is set to the second frequency value;

[0019] Based on the density level of the smokestack being the third density level, the rotation speed value is set to the third rotation speed value, and the frequency value is set to the third frequency value.

[0020] Among them, the values ​​of the first speed, the second speed, and the third speed gradually decrease, and the values ​​of the first frequency, the second frequency, and the third frequency gradually decrease.

[0021] According to another specific embodiment of the present invention, the first rotational speed is 12-13 r / min, the first frequency is 30-35 Hz, the second rotational speed is 10-11 r / min, the second frequency is 25-30 Hz, the third rotational speed is 8-9 r / min, and the third frequency is 20-25 Hz.

[0022] Embodiments of the present invention also provide a loose rehumidification system for implementing the control method described in any of the foregoing claims, comprising:

[0023] The slitting machine is equipped with a cutter for cutting tobacco stacks into tobacco blocks. The cutter is also equipped with a pressure sensor for obtaining the pressure value applied by the cutter to the tobacco stack during the cutting process.

[0024] The loosening and rehumidifying machine includes a drum and a hot air blower. The tobacco blocks can be loosened and rehumidified inside the drum, and the hot air blower is used to introduce hot air into the drum so that the loosened tobacco can be conveyed downstream under the drive of the drum and the hot air.

[0025] The control unit is electrically connected to the pressure sensor. The control unit is used to receive the pressure value output by the pressure sensor, determine the density level of the tobacco stack based on the pressure value, and control the rotation speed of the drum and the frequency of the hot air blower based on the density level.

[0026] According to another specific embodiment of the present invention, the slitting machine includes:

[0027] The connecting rod extends along a first direction and is capable of reciprocating along a second direction, which is perpendicular to the first direction.

[0028] The lifting component is located below the connecting rod along the second direction, and the lifting component can move upward relative to the connecting rod;

[0029] The cutter is positioned below the lifting component along the second direction, with a gap between the cutter and the connecting rod, allowing the cutter to be suspended above the tobacco stack under the traction of the lifting component;

[0030] A pressure sensor is located within the gap and connected to the cutter. When the cutter cuts the tobacco stack, the cutter can move upward relative to the connecting rod. The pressure sensor contacts the bottom of the connecting rod to obtain the pressure value of the cutter.

[0031] According to another specific embodiment of the present invention, the bottom of the connecting rod is provided with a lifting groove, and the edge of the opening end of the lifting groove is provided with a support protrusion protruding from the side wall of the lifting groove. A limiting protrusion is provided above the lifting component, and the limiting protrusion is installed in the lifting groove. The dimension of the limiting protrusion along the second direction is smaller than the dimension of the lifting groove along the second direction. When the cutter does not cut the tobacco stack, the bottom of the limiting protrusion contacts the support protrusion, and the support protrusion is used to prevent the limiting protrusion from falling out of the lifting groove. Furthermore, along the second direction, the difference in size between the lifting groove and the limiting protrusion is greater than the distance between the pressure sensor and the connecting rod. When the cutter cuts the tobacco stack, the limiting protrusion moves upward in the second direction within the lifting groove, and the pressure sensor contacts the bottom of the connecting rod.

[0032] According to another specific embodiment of the present invention, both the lifting groove and the lifting component are provided in twos, with the two lifting grooves located at both ends of the connecting rod, and the two limiting protrusions installed in the two lifting grooves respectively.

[0033] According to another specific embodiment of the present invention, the lifting component and the cutter are connected by bolts.

[0034] According to another specific embodiment of the present invention, a display screen is also included, which is connected to the pressure sensor and is used to display the pressure value detected by the pressure sensor.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The embodiments of the present invention determine the density grade of the tobacco stack by obtaining the pressure value applied to the tobacco stack by the cutter during cutting. Then, the rotation speed of the roller and the frequency of the hot air fan on the loosening and rehumidifying machine are controlled according to the density grade. This allows for the setting of the corresponding loosening time for different tobacco block densities, enabling precise adjustment of the loosening degree of the tobacco blocks. This ensures that tobacco blocks of different densities can be completely loosened, facilitating full contact with water and steam in the loosening and rehumidifying machine, thereby achieving a better heating and humidifying effect and ensuring that the temperature and moisture content of the tobacco leaves meet production requirements. Attached Figure Description

[0037] Figure 1 The flowchart of a control method according to an embodiment of the present invention is shown. Figure 1 ;

[0038] Figure 2 The flowchart of a control method according to an embodiment of the present invention is shown. Figure 2 ;

[0039] Figure 3 This diagram illustrates a loose rehumidification system according to an embodiment of the present invention.

[0040] Figure 4 A schematic diagram of a slitting machine according to an embodiment of the present invention is shown;

[0041] Figure 5 This shows the cutter not cutting the tobacco stack. Figure 4 A magnified view of part A in the middle;

[0042] Figure 6 The image shows a cutter cutting a tobacco stack. Figure 4 A magnified view of part A in the middle;

[0043] Figure 7 A schematic diagram of a connecting rod according to an embodiment of the present invention is shown.

[0044] Figure label:

[0045] 1. Slitting machine; 11. Cutter; 12. Connecting rod; 13. Lifting component; 131. Limiting protrusion; 14. Lifting groove; 141. Supporting protrusion; 2. Loosening and rehumidifying machine; 21. Roller; 22. Hot air blower; 23. Feed inlet; 3. Smoke stack; 4. Pressure sensor; 5. Conveyor belt. Detailed Implementation

[0046] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0047] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0049] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0050] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0051] Currently, during the production process, the density of tobacco stacks supplied by different manufacturers varies, resulting in different densities of the tobacco blocks formed after the stacks are divided. Consequently, the time required for tobacco blocks of different densities to fully loosen also varies. Existing loosening and rehumidifying machines cannot adjust the loosening time according to the different densities of tobacco blocks. When loosening and rehumidifying denser tobacco blocks, the blocks are easily not fully loosened and remain clumped. This prevents some tobacco leaves from fully contacting the water and steam in the loosening and rehumidifying machine, leading to the tobacco leaves' temperature and moisture content not meeting production requirements.

[0052] Embodiments of the present invention provide a control method for a loose rehumidification system. For example... Figure 3 As shown, the loosening and rehydration system includes a cutter 1 and a loosening and rehydration machine 2 arranged sequentially along the material conveying direction. The cutter 1 includes a cutter 11, which is used to cut the tobacco stack 3 into tobacco blocks. The tobacco blocks are transported by the conveyor belt 5 and enter the loosening and rehydration machine 2 through the feed inlet 23. The loosening and rehydration machine 2 includes a drum 21 and a hot air blower 22. The tobacco blocks can be loosened and rehydrated in the drum 21. The hot air blower 22 is used to introduce hot air into the drum 21. The loosened tobacco material can be conveyed downstream under the drive of the drum 21 and the hot air. The conveying direction of the tobacco material is as follows: Figure 3 The X direction is shown in the diagram.

[0053] Specifically, such as Figure 1 As shown, the control method includes:

[0054] Step S1: Obtain the pressure value applied by the cutter 11 to the tobacco stack 3 when cutting the tobacco stack 3;

[0055] Step S2: Determine the density grade of the smokestack 3 based on the pressure value;

[0056] Specifically, when the cutter 11 cuts the tobacco stack 3, while the cutter 11 applies pressure to the tobacco stack 3, the tobacco stack 3 also applies a reaction force to the cutter 11. The denser the tobacco stack 3 is, the greater the pressure required to cut the tobacco stack 3. Therefore, when the slitting machine 1 cuts the tobacco stack 3, the greater the pressure applied by the cutter 11 to the tobacco stack 3, the greater the density of the tobacco stack 3. Thus, by obtaining the pressure applied by the cutter 11 to the tobacco stack 3, the density range of the tobacco stack 3 can be determined, and then the tobacco stack 3 can be divided into several grades according to the density range. The density of the tobacco blocks formed after the tobacco stack 3 is divided into different densities is also different. Correspondingly, the time required for the tobacco blocks of different densities to fully loosen is also different. By determining the density grade of the tobacco stack 3, the corresponding loosening time can be set for different tobacco block densities, so as to precisely adjust the loosening degree of the tobacco blocks, so that tobacco blocks of different densities can be completely loosened, which is convenient for them to fully contact with the water and steam in the loosening and rehumidifying machine 2, thereby achieving a better heating and humidifying effect, so that the temperature and moisture content of the tobacco leaves meet the production requirements.

[0057] Step S3: Control the rotation speed of the roller 21 and the frequency of the hot air blower 22 according to the density level.

[0058] Specifically, the cutter 1 cuts the tobacco stack 3 into tobacco blocks, which are then transported to the loosening and rehydration machine 2 for loosening and rehydration. The loosened tobacco material can be transported downstream under the drive of the drum 21 and hot air. The rotation speed of the drum 21 and the wind speed of the hot air are negatively correlated with the loosening time of the tobacco blocks. The higher the rotational speed of the drum 21 and the higher the wind speed of the hot air, the faster the smoke blocks are conveyed in the loosening and rehumidifying machine 2, and the shorter the loosening time of the smoke blocks. Conversely, the loosening time of the smoke blocks is longer. When the density level of the smoke stack 3 is high, that is, the corresponding smoke block density is large, the loosening time of the smoke blocks can be increased by reducing the rotational speed of the drum 21 and the wind speed of the hot air. When the smoke block density is low, the loosening time of the smoke blocks can be reduced by increasing the rotational speed of the drum 21 and the wind speed of the hot air. Thus, the loosening time can be set according to the density of different smoke blocks to precisely adjust the degree of loosening of the smoke blocks, so that smoke blocks of different densities can be completely loosened, which is conducive to full contact with water and steam in the loosening and rehumidifying machine 2, thereby achieving a better heating and humidifying effect.

[0059] Furthermore, such as Figure 2 As shown, the density level of the smokestack 3 is determined based on the pressure value as follows: if the pressure value is less than 40KN, the density level of the smokestack is determined as the first density level; if the pressure value is greater than or equal to 40KN and less than 50KN, the density level of the smokestack is determined as the second density level; and if the pressure value is greater than or equal to 50KN, the density level of the smokestack is determined as the third density level.

[0060] Furthermore, this application does not limit the specific density range values ​​corresponding to each density grade of the smokestack; anything that can achieve the above technical solution falls within the protection scope of this application. For example, when the density grade of the smokestack is the first density grade, the density of the smokestack is 400-410 kg / m³. 3 When the density grade of the tobacco stack is the second density grade, the density of the tobacco stack is 411-424 kg / m³. 3 When the density grade of the smokestack is the third density grade, the density of the smokestack is 425-437 kg / m³. 3 .

[0061] Furthermore, such as Figure 2As shown, controlling the rotational speed of the roller 21 and the frequency of the hot air blower 22 according to the density level includes: setting the rotational speed value as a first rotational speed value and the frequency value as a first frequency value based on the density level of the smoke stack 3 as a first density level; setting the rotational speed value as a second rotational speed value and the frequency value as a second frequency value based on the density level of the smoke stack 3 as a second density level; and setting the rotational speed value as a third rotational speed value and the frequency value as a third density level. The values ​​of the first, second, and third rotational speed values ​​gradually decrease, as do the values ​​of the first, second, and third frequency values. This invention sets a first rotational speed value, a first frequency value, a second rotational speed value, a second frequency value, a third rotational speed value, and a third frequency value, wherein the values ​​of the first rotational speed value, the second rotational speed value, and the third frequency value gradually decrease; thereby, the corresponding rotational speed of the roller 21 and the frequency of the hot air blower 22 can be set for different smoke block densities, and the corresponding loosening time can be controlled to precisely adjust the loosening degree of the smoke blocks, so that smoke blocks of different densities can be completely loosened.

[0062] Furthermore, this application does not limit the first rotational speed value, the first frequency value, the second rotational speed value, the second frequency value, the third rotational speed value, and the third frequency value; anything that can achieve the above technical solution falls within the protection scope of this application. For example, the first rotational speed value is 12-13 r / min, the first frequency value is 30-35 Hz, the second rotational speed value is 10-11 r / min, the second frequency value is 25-30 Hz, the third rotational speed value is 8-9 r / min, and the third frequency value is 20-25 Hz.

[0063] Specifically, when the density level of the smoke stack 3 is determined to be the first density level, the rotation speed of the roller 21 is adjusted to 12-13 r / min, and the frequency of the hot air blower 22 is adjusted to 30-35 Hz; when the density level of the smoke stack 3 is determined to be the second density level, the rotation speed of the roller 21 is adjusted to 10-11 r / min, and the frequency of the hot air blower 22 is adjusted to 25-30 Hz; when the density level of the smoke stack 3 is determined to be the third density level, the rotation speed of the roller 21 is adjusted to 8-9 r / min, and the frequency of the hot air blower 22 is adjusted to 20-25 Hz. Thus, the corresponding rotation speed of the roller 21 and the frequency of the hot air blower 22 can be set for smoke blocks of different densities, and the corresponding loosening time can be controlled to precisely adjust the loosening degree of the smoke blocks.

[0064] Embodiments of the present invention also provide a loose rehumidification system for implementing any of the foregoing control methods, such as... Figure 3 and Figure 4As shown, the loosening and rehumidification system includes: a slitting machine 1, a loosening and rehumidification machine 2, and a control unit. The slitting machine 1 is equipped with a cutter 11, which is used to cut the tobacco stack 3 into tobacco blocks. The cutter 11 is equipped with a pressure sensor 4, which is used to obtain the pressure value applied by the cutter 11 to the tobacco stack 3 when cutting the tobacco stack 3. The loosening and rehumidification machine 2 includes a drum 21 and a hot air blower 22. The tobacco blocks can be loosened and rehumidified in the drum 21. The hot air blower 22 is used to introduce hot air into the drum 21 so that the loosened tobacco can be conveyed downstream under the drive of the drum 21 and the hot air. The control unit is electrically connected to the pressure sensor 4. The control unit is used to receive the pressure value output by the pressure sensor 4, determine the density level of the tobacco stack 3 according to the pressure value, and control the rotation speed of the drum 21 and the frequency of the hot air blower 22 according to the density level.

[0065] Furthermore, such as Figures 4 to 6 As shown, the slitting machine 1 includes a connecting rod 12, a lifting component 13, a cutter 11, and a pressure sensor 4. The connecting rod 12 is along a first direction (e.g., Figure 4 The connecting rod 12 can extend along the second direction (as shown in the Y direction), and the connecting rod 12 can extend along the second direction (as shown in the Y direction). Figure 4 The first direction (Z direction) reciprocates, and the second direction is perpendicular to the first direction. In this embodiment, the first direction is horizontal and the second direction is vertical. The lifting member 13 is located below the connecting rod 12 along the second direction, and the lifting member 13 can move upward relative to the connecting rod 12. The cutter 11 is located below the lifting member 13 along the second direction, and there is a gap between the cutter 11 and the connecting rod 12. The cutter 11 can be suspended above the tobacco stack 3 under the traction of the lifting member 13. The pressure sensor 4 is located in the gap and connected to the cutter 11. When the cutter 11 cuts the tobacco stack 3, the cutter 11 can move upward relative to the connecting rod 12. The pressure sensor 4 contacts the bottom of the connecting rod 12 to obtain the pressure value of the cutter 11.

[0066] When the cutter 1 has not started cutting the tobacco stack 3, the cutter 11 is suspended above the tobacco stack 3 under the traction of the hoisting component 13. After the cutter 1 starts cutting, the connecting rod 12 moves downward, so that the cutter 11 contacts the tobacco stack 3. Under the reaction force of the tobacco stack 3, the hoisting component 13 moves upward relative to the connecting rod 12. The bottom of the connecting rod 12 contacts the pressure sensor 4. The cutter 11 cuts the tobacco stack 3 under the push of the connecting rod 12. The pressure value of the cutter 11 at this time can be obtained by the pressure sensor 4.

[0067] Furthermore, such as Figures 4 to 7As shown, the bottom of the connecting rod 12 is provided with a lifting groove 14, and the edge of the opening end of the lifting groove 14 is provided with a support protrusion 141 protruding from the side wall of the lifting groove 14. The upper part of the lifting component 13 is provided with a limiting protrusion 131. The limiting protrusion 131 is installed in the lifting groove 14. The dimension of the limiting protrusion 131 in the second direction is smaller than the dimension of the lifting groove 14 in the second direction, so that the limiting protrusion 131 can move in the second direction in the lifting groove 14.

[0068] When the cutter 11 is not cutting the tobacco stack 3, under the weight of the cutter 11, the bottom of the limiting protrusion 131 contacts the supporting protrusion 141. The supporting protrusion 141 is used to prevent the limiting protrusion 131 from falling out of the lifting groove 14. Furthermore, along the second direction, the dimensional difference between the lifting groove 14 and the limiting protrusion 131 (e.g., Figure 5 The dimension L1 shown in the figure is greater than the distance between the pressure sensor 4 and the connecting rod 12 (as shown in the figure). Figure 5 As shown in dimension L2, this allows the pressure sensor 4 to contact the connecting rod 12 and withstand the pressure from the connecting rod 12 when the cutter 11 cuts the tobacco stack 3.

[0069] When the cutter 11 cuts the tobacco stack 3, the limiting protrusion 131 moves upward in the second direction within the lifting groove 14, and the pressure sensor 4 contacts the bottom of the connecting rod 12 to detect the pressure applied by the connecting rod 12 to the cutter 11.

[0070] This invention provides a supporting protrusion 141 on the lifting groove 14 and a limiting protrusion 131 on the lifting member 13. When the cutter 11 is not cutting the tobacco stack 3, the bottom of the limiting protrusion 131 contacts the supporting protrusion 141, preventing the limiting protrusion 131 from falling out of the lifting groove 14, thus suspending the cutter 11 above the tobacco stack 3 under the traction of the lifting member 13. When the cutter 11 cuts the tobacco stack 3, the reaction force exerted by the tobacco stack 3 on the cutter 11 causes the cutter 11 to move the limiting protrusion 131 upward in the second direction within the lifting groove 14, thereby bringing the pressure sensor 4 into contact with the bottom of the connecting rod 12. At this time, the pressure sensor 4 can detect the pressure value exerted by the connecting rod 12 on the cutter 11. Since the pressure value exerted by the connecting rod 12 on the cutter 11 is equal to the pressure value exerted by the cutter 11 on the tobacco stack 3, the pressure value exerted by the cutter 11 on the tobacco stack 3 can be obtained through the pressure sensor 4.

[0071] Furthermore, both the lifting slot 14 and the lifting component 13 are provided in twos. The two lifting slots 14 are located at both ends of the connecting rod 12, and the limiting protrusions 131 on the two lifting components 13 are respectively installed in the two lifting slots 14. This design ensures that the cutter 11 is subjected to balanced force and runs smoothly.

[0072] Furthermore, the lifting component 13 is bolted to the cutter 11. This design ensures a secure connection between the cutter 11 and the lifting component 13, preventing the cutter 11 from detaching from the lifting component 13.

[0073] Furthermore, it also includes a display screen connected to the pressure sensor 4, which displays the pressure value detected by the pressure sensor 4. This design allows the operator to more intuitively obtain the pressure value applied to the tobacco stack 3 by the cutter 11 when cutting the tobacco stack 3, facilitating timely determination of the density grade of the tobacco stack 3 based on the detected pressure value and control of the corresponding loosening time.

[0074] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A control method for a loosening and rehydration system, the loosening and rehydration system comprising, sequentially arranged along the material conveying direction, a cutting machine and a loosening and rehydration machine, the cutting machine comprising a cutter for cutting tobacco stacks into tobacco blocks, the cutter being equipped with a pressure sensor for acquiring the pressure value applied by the cutter to the tobacco stack during cutting, the loosening and rehydration machine comprising a drum and a hot air fan, the tobacco blocks being loosened and rehydrated within the drum, the hot air fan being used to introduce hot air into the drum, and the loosened tobacco material being conveyed downstream under the drive of the drum and the hot air, characterized in that... The control method includes: The pressure value applied by the cutter to the tobacco stack during cutting is obtained; The density grade of the smokestack is determined based on the pressure value; The rotational speed of the drum and the frequency of the hot air blower are controlled according to the density level; Determining the density grade of the smokestack based on the pressure value includes: Based on the pressure value being less than 40KN, the density level of the smokestack is determined to be the first density level; Based on the pressure value being greater than or equal to 40KN and less than 50KN, the density level of the smokestack is determined to be the second density level. Based on the pressure value being greater than or equal to 50KN, the density level of the smokestack is determined to be the third density level; When the density grade of the smokestack is the first density grade, the density of the smokestack is 400-410 kg / m³. 3 ; When the density grade of the smokestack is the second density grade, the density of the smokestack is 411-424 kg / m³. 3 ; When the density grade of the smokestack is the third density grade, the density of the smokestack is 425-437 kg / m³. 3 ; The step of controlling the rotational speed of the drum and the frequency of the hot air blower according to the density level includes: Based on the density level of the smokestack being the first density level, the value of the rotation speed is set as the first rotation speed value, and the value of the frequency is set as the first frequency value; Based on the fact that the density level of the smokestack is the second density level, the value of the rotation speed is set as the second rotation speed value, and the value of the frequency is set as the second frequency value; Based on the fact that the density level of the smokestack is the third density level, the value of the rotation speed is set as the third rotation speed value, and the value of the frequency is set as the third frequency value; Among them, the values ​​of the first rotational speed, the second rotational speed, and the third rotational speed gradually decrease, and the values ​​of the first frequency, the second frequency, and the third frequency gradually decrease; The first rotational speed is 12-13 r / min, the first frequency is 30-35 Hz, the second rotational speed is 10-11 r / min, the second frequency is 25-30 Hz, the third rotational speed is 8-9 r / min, and the third frequency is 20-25 Hz.

2. A loose moisture reabsorption system for implementing the control method of claim 1, characterized in that, include: A slitting machine is equipped with a cutter for cutting tobacco stacks into tobacco blocks. The cutter is also equipped with a pressure sensor for acquiring the pressure value applied by the cutter to the tobacco stack when cutting it. A loosening and rehumidifying machine includes a drum and a hot air blower. The smoke block can be loosened and rehumidified inside the drum, and the hot air blower is used to introduce hot air into the drum so that the loosened smoke block can be conveyed downstream under the drive of the drum and the hot air. The control unit is electrically connected to the pressure sensor. The control unit is used to receive the pressure value output by the pressure sensor, determine the density level of the smoke stack based on the pressure value, and control the rotation speed of the drum and the frequency of the hot air blower based on the density level.

3. The loose rehumidification system as described in claim 2, characterized in that, The slitting machine includes: A connecting rod extends along a first direction and is capable of reciprocating along a second direction, which is perpendicular to the first direction. A lifting component is disposed below the connecting rod along the second direction, and the lifting component is capable of moving upward relative to the connecting rod; The cutter is positioned below the lifting member along the second direction, and there is a gap between the cutter and the connecting rod. The cutter can be suspended above the tobacco stack under the traction of the lifting member. The pressure sensor is located within the gap and connected to the cutter. When the cutter cuts the tobacco stack, the cutter can move upward relative to the connecting rod, and the pressure sensor contacts the bottom of the connecting rod to obtain the pressure value of the cutter.

4. The loose rehumidification system as described in claim 3, characterized in that, The bottom of the connecting rod is provided with a lifting groove, and the edge of the opening end of the lifting groove is provided with a support protrusion protruding from the side wall of the lifting groove. A limiting protrusion is provided above the lifting component. The limiting protrusion is installed in the lifting groove, and the dimension of the limiting protrusion along the second direction is smaller than the dimension of the lifting groove along the second direction. When the cutter does not cut the tobacco stack, the bottom of the limiting protrusion contacts the support protrusion. The support protrusion is used to prevent the limiting protrusion from falling out of the lifting groove. Furthermore, along the second direction, the difference in size between the lifting groove and the limiting protrusion is greater than the distance between the pressure sensor and the connecting rod. When the cutter cuts the tobacco stack, the limiting protrusion moves upward in the second direction within the lifting groove, and the pressure sensor contacts the bottom of the connecting rod.

5. The loose rehumidification system as described in claim 4, characterized in that, Both the lifting groove and the lifting component are provided in twos. The two lifting grooves are located at both ends of the connecting rod, and the two limiting protrusions are respectively installed in the two lifting grooves.

6. The loose rehumidification system as described in claim 5, characterized in that, The lifting component is connected to the cutter by bolts.

7. The loose rehumidification system as described in claim 6, characterized in that, It also includes a display screen connected to the pressure sensor, the display screen being used to display the pressure value detected by the pressure sensor.

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