Hot air circulation structure of tobacco leaf modulation test box and modulation temperature balance control system

Abstract

The invention discloses a hot air circulation structure of a tobacco leaf modulation test box and a modulation temperature balance control system, and the interior of a test box body is divided into a heating air duct and at least one tobacco leaf modulation bin. A heating device and a circulating power device are arranged in the heating air duct, the circulating power device is used for enabling air entering from the air return port to surge to the adjustable balanced air supply module, and a three-dimensional full-coverage temperature collecting mechanism is arranged in each tobacco leaf modulating bin. The test period is greatly shortened, the equipment investment cost is greatly reduced, meanwhile, the three-dimensional full-coverage temperature collecting mechanism is used for collecting the full-coverage temperature of the inner space of the tobacco leaf modulating bin, the collected temperature serves as a reference basis for adjusting the air outlet volume of each hot air outlet, intelligent control is achieved, and the test efficiency is improved. And the temperature of each position in the tobacco leaf modulation bin can be kept relatively uniform at an extremely high level, so that optimal environmental parameters required by high-quality modulation products can be obtained from a test, and accurate guidance is provided for subsequent large-scale production.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco industry equipment, and particularly relates to a hot air circulation structure and a modulation temperature equalization control system for a tobacco leaf modulation test chamber. Background Art

[0002] Tobacco leaves not only come in a wide variety, but even for the same type of tobacco leaf, the quality of the harvested tobacco leaves varies depending on the planting region and year. Therefore, in the modern tobacco manufacturing industry, in order to obtain products of the best quality, before large-scale modulation (including baking or sun-drying) of tobacco leaves, a small amount of tobacco leaves need to be selected and sent into a tobacco leaf modulation test chamber for trial production to obtain the key production parameters for producing products of the best quality through experiments, and then large-scale production is carried out based on this.

[0003] For existing tobacco leaf modulation test chambers, only one tobacco leaf modulation chamber is provided. Usually, experiments need to simulate different environmental parameters multiple times, and then compare the quality of the products obtained under different environmental parameters, and finally select the best environmental parameters. However, if only one existing tobacco leaf modulation test chamber is used, it will inevitably lead to an extremely long test cycle, and the delay in production may affect the quality of a large number of tobacco leaves to be processed; if multiple tobacco leaf modulation test chambers are used, although the above problems can be effectively solved, not only is the equipment procurement cost extremely high, but also the placement of the equipment requires a large amount of space, and at the same time, more manpower is required for the operation of the equipment.

[0004] Moreover, the hot air circulation structure of existing tobacco leaf modulation test chambers is very simple. Usually, the heating device is set at the bottom or top of the tobacco leaf modulation chamber, and the hot air circulation method of convection from bottom to top or leaving from top to bottom is used to heat the tobacco leaf modulation chamber. However, such a hot air circulation structure of the existing type will inevitably result in very poor temperature uniformity at various positions inside the tobacco leaf modulation chamber (usually, the closer to the heating device, the higher the temperature). The uneven heating of the tobacco leaves may not only lead to unsatisfactory quality of the modulated products obtained from the experiments, but also may lead to inaccurate best environmental parameters obtained, thus affecting the quality of the products obtained in subsequent large-scale production, and further affecting the final obtained benefits.

[0005] Solving the above problems has become an urgent task. Summary of the Invention

[0006] In view of this, the present invention provides a hot air circulation structure and a modulation temperature equalization control system for a tobacco leaf modulation test chamber.

[0007] The technical solution is as follows:

[0008] The first aspect of the present application relates to a hot air circulation structure of a tobacco leaf curing test chamber, which includes a test chamber body. The interior of the test chamber body is partitioned to form a heating air duct and at least one tobacco leaf curing bin. At least one air return opening communicating with the air inlet end of the heating air duct is provided in each tobacco leaf curing bin. An adjustable balanced air supply module communicating with the air outlet of the heating air duct is installed in each tobacco leaf curing bin. Each adjustable balanced air supply module has a plurality of hot air outlets arrayed on one side wall of the corresponding tobacco leaf curing bin, and the air volume of each hot air outlet can be adjusted. A heating device for heating air and a circulating power device for delivering the air entering from the air return opening to the adjustable balanced air supply module are provided in the heating air duct.

[0009] With the above hot air circulation structure of the tobacco leaf curing test chamber, since a plurality of hot air outlets arrayed on one side wall are provided in each tobacco leaf curing bin and the air volume of each hot air outlet can be adjusted, the temperature at each position in the tobacco leaf curing bin can be kept relatively uniform at a very high level. Therefore, not only can a curing product with very ideal quality be obtained from the test, but also the best environmental parameters finally screened can be ensured to have excellent accuracy, so as to guide the subsequent large-scale production to obtain high-quality products, and further ensure the ideal final profit. At the same time, since a plurality of tobacco leaf curing bins can be provided in one tobacco leaf curing test chamber, by means of a set of heating device and circulating power device cooperating with each hot air outlet with adjustable air volume, different environmental parameters can be simulated in each tobacco leaf curing bin and the tests can be carried out synchronously. This not only greatly shortens the test cycle, enables a large number of fresh tobacco leaves to be processed without experiencing too long waiting, ensures the quality of subsequent products, but also, compared with the traditional method of using multiple tobacco leaf curing test chambers, by means of a set of heating device and circulating power device cooperating with multiple tobacco leaf curing bins, not only greatly reduces the equipment investment cost, but also has a very high structural integration degree, saves the equipment placement space, and can also reduce the number of operating personnel.

[0010] In some embodiments, each adjustable balanced air supply module includes a plurality of air supply components arranged side by side from top to bottom and a main air supply pipeline for simultaneously supplying air to each air supply component. The air inlet ends of the main air supply pipelines are all communicated with the air outlet of the heating air duct. Each air supply component includes an end air supply pipeline installed on one side wall of the tobacco leaf curing bin extending in the horizontal direction.

[0011] In the same tobacco leaf curing bin, the end air supply pipelines are arranged side by side from top to bottom and each has a plurality of hot air outlets distributed in the horizontal direction. The end air supply pipelines are all communicated with the corresponding main air supply pipeline through an intermediate air supply pipeline, and an air volume regulating component for regulating the hot air flux is installed on each intermediate air supply pipeline.

[0012] In some embodiments, the hot air outlets are all in the shape of a flaring trumpet that gradually increases in the direction away from the corresponding end air supply pipelines. The outer end surfaces of the hot air outlets are all covered with air distribution plates, and the air distribution plates are all provided with air outlet holes distributed in an array.

[0013] In some embodiments, in the same tobacco leaf curing bin, the end air supply pipelines are evenly distributed from top to bottom; on the same end air supply pipeline, the hot air outlets are evenly distributed in the horizontal direction.

[0014] In some embodiments, each air volume adjustment assembly includes a valve plate rotatably installed in the middle air supply pipeline and a valve plate driving servo for controlling the rotation of the valve plate.

[0015] In some embodiments, on one side wall of each tobacco leaf curing bin where the air supply assembly is provided, an air supply assembly cover plate covering the main air supply pipeline, each middle air supply pipeline, and each air volume adjustment assembly is installed, and each end air supply pipeline is exposed outside the air supply assembly cover plate.

[0016] In some embodiments, in the same tobacco leaf curing bin, at least one set of hanging tobacco assemblies are arranged side by side from top to bottom on the air supply assembly cover plate and the side wall of the tobacco leaf curing bin opposite thereto in a one-to-one correspondence. Each hanging tobacco assembly includes a hanging tobacco lower plate extending in the horizontal direction and a hanging tobacco upper plate installed above the hanging tobacco lower plate through at least one weight sensor. The hanging tobacco lower plates are all fixedly installed on the air supply assembly cover plate or the side wall of the tobacco leaf curing bin. A support chute extending along the length direction thereof is recessed on the upper surface of the hanging tobacco upper plate. At least one tobacco rod support slidably engaged therewith is installed in the support chute. At least two support pulleys evenly distributed along the length direction of the support chute are installed at the bottom of the tobacco rod support. Pulley positioning grooves evenly distributed along the length direction thereof are recessed at the bottom of the support chute. The distance between adjacent support pulleys of the tobacco rod support is equal to the distance between adjacent pulley positioning grooves of the support chute. Each support pulley of the tobacco rod support is respectively supported in the corresponding pulley positioning groove.

[0017] The second aspect of the present application relates to a modulation temperature equalization control system, including the hot air circulation structure of the above-mentioned tobacco leaf curing test chamber and a three-dimensional full-coverage temperature acquisition mechanism arranged in each tobacco leaf curing bin. Each three-dimensional full-coverage temperature acquisition mechanism includes a temperature sensor and a sensor position control mechanism for adjusting the spatial position of the temperature sensor in the corresponding tobacco leaf curing bin. The temperature sensor can be moved to any position in the corresponding tobacco leaf curing bin under the control of the sensor position control mechanism.

[0018] By adopting the above modulation temperature equalization control system, it not only has all the advantages of the hot air circulation structure of the above-mentioned tobacco leaf modulation test chamber, but also the temperature sensor can move arbitrarily in the three-dimensional space of the tobacco leaf modulation bin, so as to realize the full-coverage temperature acquisition of the internal space of the tobacco leaf modulation bin, and use the collected temperature data as the reference basis for adjusting the air volume of each hot air outlet. It not only realizes intelligent control, but also makes the temperature at each position in the tobacco leaf modulation bin maintain relatively uniform to a higher degree, thereby further improving the modulation quality of the tobacco leaf.

[0019] In some embodiments, the sensor position control mechanism includes a lifting control component and a two-dimensional translation component for adjusting the position of the lifting control component in the horizontal direction. The two-dimensional translation components are respectively installed on the top of the corresponding tobacco leaf modulation bin. The lifting control components each include a lifting component housing installed on the corresponding two-dimensional translation component, a winch drive motor installed on the lifting component housing, a winch rotatably installed in the lifting component housing, and a cable wound around the winch. A driving gear is synchronously sleeved on the motor shaft of the winch drive motor, a driven gear meshing with the driving gear is synchronously sleeved on the winch, and the outer end of the cable passes through the lifting component housing and suspends the temperature sensor.

[0020] In some embodiments, the two-dimensional translation components each include a first electric linear module and a carriage installed in parallel on the top of the corresponding tobacco leaf modulation bin, and a second electric linear module perpendicular to the first electric linear module and the carriage. The slide rail of the second electric linear module is installed on the slider of the first electric linear module and the slider of the carriage at the same time, and the lifting component housing is installed on the slider of the second electric linear module. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the tobacco leaf modulation test chamber;

[0022] Figure 2 It is a cross-sectional view of one position of the tobacco leaf modulation test chamber;

[0023] Figure 3 It is a cross-sectional view of another position of the tobacco leaf modulation test chamber;

[0024] Figure 4 It is a schematic structural diagram of one perspective after removing a cabinet door of the tobacco leaf modulation test chamber;

[0025] Figure 5 It is a schematic structural diagram of another perspective after removing a cabinet door of the tobacco leaf modulation test chamber;

[0026] Figure 6 It is a schematic structural diagram of the tobacco leaf modulation test chamber after removing a cabinet door and the cover plate of the air supply component;

[0027] Figure 7 It is a schematic structural diagram of the air volume adjustment component;

[0028] Figure 8 It is a schematic structural diagram of the three-dimensional full-coverage temperature acquisition mechanism;

[0029] Figure 9 It is a cross-sectional view of the lifting control component and the temperature adjustment sensor;

[0030] Figure 10 It is a schematic structural diagram of the cigarette hanging component;

[0031] Figure 11 It is a schematic structural diagram of the cigarette rod support. Specific implementation mode

[0032] The present invention will be further described below in conjunction with the embodiments and the drawings.

[0033] Embodiment 1:

[0034] As Figures 1 - 11 shown, a hot air circulation structure of a tobacco leaf curing test box mainly includes a test box body 1. The interior of the test box body 1 is partitioned to form a heating air duct 11 and at least one tobacco leaf curing chamber 12. At least one air return opening 13 communicating with the air inlet end of the heating air duct 11 is opened in each tobacco leaf curing chamber 12. At the same time, an air outlet 15 for sending air to each tobacco leaf curing chamber 12 is opened at the air outlet end of the heating air duct 11. And a heating device 5 for heating air and a circulating power device 6 for conveying the air entering from the air return opening 13 to the adjustable balanced air supply module 2 are arranged in the heating air duct 11. Therefore, under the action of the circulating power device 6, the air in the tobacco leaf curing chamber 12 enters the heating air duct 11 through the air return opening 13, is heated by the heating device 5, and then circulates back to the tobacco leaf curing chamber 12 through the air outlet 15.

[0035] In this embodiment, the interior of the test box body 1 is preferably partitioned to form one heating air duct 11 and multiple tobacco leaf curing chambers 12, and each tobacco leaf curing chamber 12 is annularly arranged around the heating air duct 11. Since multiple tobacco leaf curing chambers 12 can be arranged in one tobacco leaf curing test box, through a set of heating device 5 and circulating power device 6 cooperating with each hot air outlet with adjustable air volume, it is possible to simulate different environmental parameters for each tobacco leaf curing chamber 12 and conduct tests synchronously. This not only greatly shortens the test cycle, enables a large number of fresh tobacco leaves to be processed without having to wait too long, ensuring the quality of subsequent products, but also by the way of a set of heating device 5 and circulating power device 6 cooperating with multiple tobacco leaf curing chambers 12, compared with the traditional method of using multiple tobacco leaf curing test boxes, it not only greatly reduces the equipment investment cost, has a very high structural integration degree, saves the equipment placement space, but also can reduce the number of operating personnel.

[0036] Please refer to Figure 2 and Figure 3 In this embodiment, preferably, the heating device 5 is arranged at a position close to the air return opening 13 of the heating air duct 11, and the circulating power device 6 is preferably arranged at a position close to the air outlet 15 of the heating air duct 11. Such a design not only ensures the heating capacity of the heating device 5 for the air, but also enables the circulating power device 6 to exert greater performance and improve the air flow rate.

[0037] Among them, the heating device 5 preferably adopts a finned heating tube, which has a large heat exchange area and improves the heat exchange performance for the air. The circulating power device 6 preferably adopts a multi-fan combined installation method, which can not only control the air volume of a single fan, but also adjust the number of fans turned on and off, thus having a very large air volume adjustment range and extremely high flexibility in use.

[0038] Please refer to Figure 4 and Figure 6 In the tobacco leaf curing bin 12, an adjustable balanced air supply module 2 communicated with the air outlet 15 of the heating air duct 11 is installed. The adjustable balanced air supply module 2 has a plurality of hot air outlets 212 arrayed on one side wall of the corresponding tobacco leaf curing bin 12, and the air volume of each hot air outlet 212 can be adjusted. Therefore, since a plurality of hot air outlets 212 arrayed on one side wall are provided in each tobacco leaf curing bin 12, and the air volume of each hot air outlet 212 can be adjusted, the temperature at each position in the tobacco leaf curing bin 12 can be kept relatively uniform at a very high level. Thus, not only can a curing product with very ideal quality be obtained from the experiment, but also the best environmental parameters finally screened and obtained can have excellent accuracy, so as to guide subsequent large-scale production to obtain high-quality products, and further ensure the final achievement of ideal benefits.

[0039] Specifically, each adjustable balanced air supply module 2 includes a plurality of air supply components 21 arranged side by side from top to bottom and a main air supply pipeline 22 for simultaneously supplying air to each air supply component 21. The air inlet ends of the main air supply pipelines 22 are all communicated with the air outlet 15 of the heating air duct 11, that is: the main air supply pipeline 22 supplies air to all the air supply components 21 simultaneously.

[0040] Among them, the air supply component 21 includes an end air supply pipeline 211 installed on one side wall of the tobacco leaf curing barn 12 and extending horizontally. In the same tobacco leaf curing barn 12, the end air supply pipelines 211 are arranged side by side from top to bottom, and each has a plurality of hot air outlets 212 distributed horizontally. The end air supply pipelines 211 are all connected to the corresponding main air supply pipeline 22 through an intermediate air supply pipeline 23, and an air volume adjustment component 24 for adjusting the hot air flux is installed on each intermediate air supply pipeline 23. Therefore, a large number of hot air outlets 212 form a dot matrix on a plane in space, so as to realize a three-dimensional air supply form inside the tobacco leaf curing barn 12. Since the air volume of each hot air outlet 212 can be adjusted, it is very easy to keep the temperature at each position in the tobacco leaf curing barn 12 relatively uniform at a very high level. Moreover, the air volume of each hot air outlet 212 on each end air supply pipeline 211 in this embodiment is uniformly adjusted synchronously by the air volume adjustment component 24 installed on the intermediate air supply pipeline 23. It can not only keep the temperature at each position in the tobacco leaf curing barn 12 relatively uniform at a very high level, but also use a smaller number of air volume adjustment components 24, which not only reduces the equipment cost, but also greatly reduces the control difficulty, and is also convenient for maintenance.

[0041] Furthermore, in the same tobacco leaf curing barn 12, the end air supply pipelines 211 are uniformly distributed from top to bottom; on the same end air supply pipeline 211, the hot air outlets 212 are uniformly distributed horizontally. Therefore, the hot air outlets 212 are arranged in an array, which can simplify the control method and make it easier to keep the temperature at each position in the tobacco leaf curing barn 12 uniform.

[0042] Please refer to Figure 6 , the hot air outlets 212 are all in the shape of a flared opening that gradually increases in the direction away from the corresponding end air supply pipeline 211, so as to guide the wind direction to uniformly expand towards the outlet direction, and thus the air outlet coverage area is larger. At the same time, the outer end surfaces of the hot air outlets 212 are all covered with air distribution plates 213, and the air distribution plates 213 are all provided with air outlet holes 213a arranged in an array. The air outlet mode of the small holes arranged in an array makes the air outlet more uniform, and thus the heat received by each position of the tobacco leaves is more uniform, greatly improving the quality of the final product obtained from tobacco leaf curing.

[0043] Please refer to Figure 6 and Figure 7, the air volume adjustment assembly 24 includes a valve plate 241 rotatably installed in the middle air supply pipeline 23 and a valve plate driving servo 242 for controlling the rotation of the valve plate 241. The size and shape of the valve plate 241 are adapted to the cross-sectional size and shape of the middle air supply pipeline 23. By driving the valve plate 241 to rotate through the valve plate driving servo 242, the opening degree of the valve plate 241 can be adjusted, so that the flux size of the middle air supply pipeline 23 can be accurately adjusted, and the accurate control of the air volume size can be realized.

[0044] Please refer to Figure 4 and Figure 6 , on one side wall of each tobacco leaf curing bin 12 where the air supply assembly 21 is provided, an air supply assembly cover plate 25 covering the main air supply pipeline 22, each middle air supply pipeline 23 and each air volume adjustment assembly 24 is installed, and only each end air supply pipeline 211 is exposed outside the air supply assembly cover plate 25. Through such a design, the internal components are protected, the visual clutter is avoided, and at the same time, it is easy to clean the internal space of the tobacco leaf curing bin 12.

[0045] At the same time, setting the air supply assembly cover plate 25 also has the function of facilitating the installation of the tobacco hanging assembly 3. Specifically, please refer to Figure 4 , Figure 5 , Figure 10 and Figure 11 , in the same tobacco leaf curing bin 12, at least one group of tobacco hanging assemblies 3 are arranged side by side from top to bottom on the air supply assembly cover plate 25 and on the side wall of the tobacco leaf curing bin 12 opposite to it. The tobacco hanging assemblies 3 on both side walls of the tobacco leaf curing bin 12 correspond to each other to facilitate tobacco hanging.

[0046] The tobacco hanging assemblies 3 all include a tobacco hanging lower plate 31 extending in the horizontal direction and a tobacco hanging upper plate 33 installed above the tobacco hanging lower plate 31 through at least one weight sensor 32. The tobacco leaves are hung on the tobacco hanging upper plate 33 through tobacco rods. Through the weight sensor 32, the weight change of the tobacco leaves can be monitored in real time to calculate the water loss rate, so as to judge the stage of tobacco leaf curing.

[0047] At the same time, please refer to Figure 4 and Figure 5 , visual cameras 7 are installed at the bottom and top of the tobacco leaf curing bin 12. Not only can the visual cameras 7 remotely monitor the color change of the tobacco leaves in real time, so as to determine the accurate stage of tobacco leaf curing (baking or sunning) in the curing cycle, especially in combination with the tobacco leaf water loss rate information collected by the weight sensor 32, the accuracy of stage judgment can be ensured; moreover, the visual cameras 7 can provide a judgment basis for obstacle avoidance during the operation of the three-dimensional full-coverage temperature and humidity acquisition mechanism 4, avoiding the risk of collision or entanglement of the temperature sensor 41 (see the following text for details).

[0048] Further, a cabinet door 14 corresponding to each tobacco leaf curing bin 12 is provided on the test chamber body 1, and a large-sized observation window 141 is provided on each cabinet door 14 to facilitate the close observation of the color change and curing condition of the tobacco leaves.

[0049] Please refer to Figure 4 、 Figure 10 and Figure 11 As shown in, the hanging tobacco lower plate 31 is preferably fixedly installed on the air supply component cover plate 25 or the side wall of the tobacco leaf curing bin 12 opposite to the air supply component cover plate 25. The hanging tobacco components 3 on the air supply component cover plate 25 correspond one by one to the hanging tobacco components 3 on the side wall opposite to the air supply component cover plate 25, so that the air outlet directions of the hot air outlets 212 are consistent (parallel) with the extending direction of the tobacco rod hanging the tobacco leaves, which can not only ensure the efficiency of baking or simulating sun-curing the tobacco leaves, but also improve the quality of tobacco leaf curing. At the same time, a support chute 331 extending along its length is recessed on the upper surface of the hanging tobacco upper plate 33. At least one tobacco rod support 34 slidably engaged with it is installed in the support chute 331. At least two support pulleys 341 evenly distributed along the length direction of the support chute 331 are installed at the bottom of the tobacco rod support 34. Pulley positioning grooves 331a evenly distributed along its length are recessed at the bottom of the support chute 331. The distance between adjacent support pulleys 341 of the tobacco rod support 34 is equal to the distance between adjacent pulley positioning grooves 331a of the support chute 331. Each support pulley 341 of the tobacco rod support 34 is respectively supported in the corresponding pulley positioning groove 331a. Through such a design, it is not only very convenient to adjust the installation position of the tobacco rod support 34, but also easy to perform self-positioning and constraint based on gravity. At the same time, since each adjustment step is the same, it is very convenient and efficient to keep the two ends of the tobacco rod synchronous on the two hanging tobacco upper plates 33, and it is also easy for the tobacco rod to be perpendicular to the hanging tobacco upper plate 33. Furthermore, a row of tobacco leaves on the tobacco rod can reduce the blockage of hot air in space, making it easy to keep the internal temperature uniform and improving the quality of curing.

[0050] Further, positioning bosses 343 are provided at both ends of the tobacco rod support 34 in the length direction, which can prevent the tobacco rod from accidentally falling. At the same time, a positioning groove 342 penetrating along its length is provided on the upper surface of the tobacco rod support 34, making the tobacco rod support 34 applicable to different types of tobacco rods and having good versatility.

[0051] Please refer to Figure 1 As shown in, the test chamber body 1 is also provided with a plurality of pulleys 16, so that the tobacco leaf curing test chamber is easy to be transferred as a whole, and each pulley 16 can be locked, ensuring the stability and reliability of the installation of the tobacco leaf curing test chamber.

[0052] Embodiment 2:

[0053] Please refer toFigures 4 - 6 and Figure 8 and Figure 9 , a modulation temperature equalization control system, including the hot air circulation structure of the tobacco leaf modulation test chamber in Embodiment 1 and a three-dimensional full-coverage temperature acquisition mechanism 4 arranged in each tobacco leaf modulation bin 12. The three-dimensional full-coverage temperature acquisition mechanism 4 includes temperature sensors 41 and a sensor position control mechanism 42 for adjusting the spatial position of the temperature sensors 41 in the corresponding tobacco leaf modulation bin 12. The temperature sensors 41 can be moved to any position in the corresponding tobacco leaf modulation bin 12 under the control of the sensor position control mechanism 42.

[0054] Therefore, the temperature sensors 41 can move arbitrarily in the three-dimensional space of the tobacco leaf modulation bin 12, so as to realize the full-coverage temperature acquisition of the internal space of the tobacco leaf modulation bin 12, and use the collected temperature data as a reference for adjusting the air volume of each hot air outlet 212. This not only realizes intelligent control, but also makes the temperature at each position in the tobacco leaf modulation bin 12 maintain relatively uniform to a greater extent, thereby further improving the modulation quality of the tobacco leaves.

[0055] The sensor position control mechanism 42 includes a lifting control component and a two-dimensional translation component for adjusting the position of the lifting control component in the horizontal direction. The two-dimensional translation components are respectively installed on the top of the corresponding tobacco leaf modulation bin 12. The lifting control components include a lifting component housing 421 installed on the corresponding two-dimensional translation component, a winch drive motor 423 installed on the lifting component housing 421, a winch 422 rotatably installed in the lifting component housing 421, and a cable 424 wound around the winch 422. A driving gear 425 is sleeved on the motor shaft of the winch drive motor 423 in a synchronous rotation manner, and a driven gear 426 meshing with the driving gear 425 is sleeved on the winch 422 in a synchronous rotation manner. The outer end of the cable 424 passes through the lifting component housing 421 and hangs a temperature sensor 41, that is: the winch drive motor 423 drives the driving gear 425 to rotate synchronously with it, the driving gear 425 drives the driven gear 426 to rotate, the driven gear 426 drives the winch 422 to rotate synchronously with it, and by the reciprocating rotation of the winch 422, the control of the cable 424 can be realized.

[0056] The above structure not only has high control precision, and the hoisting type control method of the temperature sensor 41 can reduce the risk of entanglement with the tobacco leaves. Moreover, when the temperature sensor 41 collides during the lowering process, the winch drive motor 423 can quickly sense the reduction of the torque, thereby recovering the cable 424 and quickly freeing the temperature sensor 41, simplifying the control program. At the same time, combined with the internal images collected by the vision camera 7, the risk of collision and entanglement of the temperature sensor 41 can be greatly avoided.

[0057] Among them, each two-dimensional translation component includes a first electric linear module 427 and a carriage 428 which are installed in parallel on the top of the corresponding tobacco leaf curing bin 12, and a second electric linear module 429 which is perpendicular to the first electric linear module 427 and the carriage 428. The slide rail of the second electric linear module 429 is installed on the sliders of the first electric linear module 427 and the carriage 428 at the same time. The lifting component housing 421 is installed on the slider of the second electric linear module 429, realizing translation control in the horizontal direction. The installation structure is simple and reliable, the operation is stable, and the control accuracy is high.

[0058] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Under the inspiration of the present invention, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.

Claims

1. A hot air circulation structure of a tobacco curing test box, comprising a test box body, characterized in that: The interior of the test box body is divided into a heating air duct and at least one tobacco curing bin, each of which is provided with at least one return air outlet connected to the air inlet end of the heating air duct, each of which is equipped with an adjustable balanced air supply module connected to the air outlet of the heating air duct, each of which has a plurality of hot air outlets arranged in an array on one side wall of the corresponding tobacco curing bin, and the air volume of each hot air outlet can be adjusted, and the heating air duct is provided with a heating device for heating the air and a circulation power device for conveying the air entering from the return air outlet to the adjustable balanced air supply module.

2. The hot air circulation structure of the tobacco curing test box according to claim 1 is characterized in that: The adjustable balanced air supply module includes a plurality of air supply components arranged side by side from top to bottom and a main air supply pipeline for simultaneously supplying air to each air supply component, the air inlet end of the main air supply pipeline is connected to the air outlet of the heating air duct, and the air supply components include a terminal air supply pipeline installed on a side wall of the tobacco leaf preparation bin extending in the horizontal direction; In the same tobacco curing bin, each terminal air supply duct is arranged side by side from top to bottom, and each has a plurality of hot air outlets distributed in the horizontal direction. The terminal air supply duct is connected to the corresponding main air supply duct through an intermediate air supply duct, and the intermediate air supply duct is installed with an air volume regulating component for regulating the hot air flux.

3. The hot air circulation structure of the tobacco curing test box according to claim 2 is characterized in that: The hot air outlets are all bell-mouth structures that gradually increase in size in the direction away from the corresponding terminal air supply pipelines. The outer end faces of the hot air outlets are all covered with air distribution plates, and the air distribution plates are all provided with air outlet holes distributed in an array.

4. The hot air circulation structure of the tobacco curing test box according to claim 2 or 3, characterized in that: In the same tobacco curing bin, each terminal air supply duct is evenly distributed from top to bottom; on the same terminal air supply duct, each hot air outlet is evenly distributed in the horizontal direction.

5. The hot air circulation structure of the tobacco curing test box according to claim 2 is characterized in that: The air volume adjustment components all include a valve plate rotatably installed in the corresponding intermediate air supply pipeline and a valve plate driving steering gear for controlling the rotation of the valve plate.

6. The hot air circulation structure of the tobacco curing test box according to claim 2 is characterized in that: In each tobacco curing bin, an air supply component cover is installed on one side wall of the air supply component, covering the main air supply duct, each intermediate air supply duct and each air volume adjustment component, and each terminal air supply duct is exposed outside the air supply component cover.

7. The hot air circulation structure of the tobacco curing test box according to claim 6 is characterized in that: The cam is a vertical cam which is provided with a plurality of camshafts, each of ...

8. A modulated temperature balance control system, characterized in that: It comprises a hot air circulation structure of a tobacco curing test box as described in any one of claims 1 to 7 and a three-dimensional full-coverage temperature collection mechanism arranged in each tobacco curing bin, wherein the three-dimensional full-coverage temperature collection mechanism comprises a temperature sensor and a sensor position control mechanism for adjusting the spatial position of the temperature sensor in the corresponding tobacco curing bin, and the temperature sensor can be moved to any position in the corresponding tobacco curing bin under the control of the sensor position control mechanism.

9. The modulated temperature balance control system according to claim 8, characterized in that: The sensor position control mechanisms all include a lifting control component and a two-dimensional translation component for adjusting the horizontal position of the lifting control component, the two-dimensional translation components are respectively installed on the top of the corresponding tobacco leaf preparation bin, the lifting control components all include a lifting component shell installed on the corresponding two-dimensional translation component, a capstan drive motor installed on the lifting component shell, a capstan rotatably installed in the lifting component shell, and a cable wound on the capstan, the motor shaft of the capstan drive motor is synchronously rotatably mounted with a driving gear, the capstan is synchronously rotatably mounted with a driven gear meshing with the driving gear, and the outer end of the cable passes through the lifting component shell and is hung with the temperature sensor.

10. The modulated temperature balance control system according to claim 9, characterized in that: The two-dimensional translation components include a first electric linear module and a slide installed in parallel on the top of the corresponding tobacco leaf modulation bin, and a second electric linear module perpendicular to the first electric linear module and the slide. The slide rail of the second electric linear module is installed on the slider of the first electric linear module and the slider of the slide at the same time, and the lifting component shell is installed on the slider of the second electric linear module.

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