Heat preservation and moisture preservation conveying device for materials between leaf moistening processes

Abstract

The utility model discloses a heat preservation and moisture preservation conveying device for materials between leaf moistening processes. The technical problems that due to the fact that the conveying distance between existing leaf moistening procedures is too long, moisture of tobacco leaves is lost, and temperature is lowered are mainly solved. The protective beams are relatively fixed to the two sides of the conveying belt in the running direction of the conveying belt, the heat preservation covers are sequentially hinged to the corresponding positions of the top face of the protective beam on one side in the arrangement direction of the protective beams, and the heating lamps are arranged in the heat preservation covers. The humidifying nozzles are sequentially arrayed on the edge of the guard beam in the axial direction of the guard beam, and the temperature and humidity sensor is relatively fixed to the corresponding position of the heat preservation cover and used for detecting the temperature and humidity in the heat preservation cover. And the controller is in communication connection with the temperature and humidity sensor and is used for correspondingly outputting a PWM (Pulse Width Modulation) signal to control the power of the heating lamp and the mist amount of the humidifying nozzle. The device has the advantages of high regulation and control reliability, good heat preservation and moisture preservation effects and the like.

Description

Technical Field

[0001] The present application relates to the technical field of cigarette making equipment, and in particular to a material heat preservation and moisture retention conveying device between leaf moistening processes. Background Art

[0002] Tobacco conditioning is a crucial step in the tobacco leaf threshing and redrying pretreatment process during tobacco production. Its primary purpose is to adjust the moisture content of the tobacco leaves, making them softer, looser, and more pliable, thereby facilitating subsequent threshing, redrying, and tobacco-making operations. Conditioning also reduces leaf breakage during processing, improving leaf utilization and cigarette quality.

[0003] Taking the combined forward and reverse flow leaf moistening process as an example, the process usually includes the following steps:

[0004] Primary conditioning: The tobacco leaves are fed into the primary conditioning drum. Temperature, humidity, and time are adjusted to achieve a desired moisture content and softness. After primary conditioning, the leaves are soft, slightly twangy, and can be easily torn from the stems.

[0005] Secondary conditioning: After primary conditioning, the leaves are fed into the secondary conditioning drum for further humidification and heating. The leaves are softer and have no noticeable tendency to stand upright. The leaves have smooth edges after being torn from the stems.

[0006] However, in the process of implementing the technical solution in the embodiment of the present application, the inventors of the present application found that there was a long transportation distance between the first moisturizing and the second moisturizing, which was as much as tens of meters. As a result, the tobacco leaves lost moisture and their temperature dropped during the transportation process, making the moisturizing effect worse.

[0007] The information disclosed in this background technology section is only used to deepen the understanding of the background technology of the present disclosure and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0008] In view of at least one of the above technical problems, the present disclosure provides a material heat preservation and moisture conservation conveying device between moisturizing processes, which mainly solves the technical problem that the long conveying distance between moisturizing processes leads to moisture loss and temperature drop of tobacco leaves.

[0009] According to one aspect of the present disclosure, a material heat preservation and moisture retention conveying device between moisturizing processes is provided, which includes a conveyor belt, guard beams relatively fixed to both sides of the conveyor belt along the running direction of the conveyor belt, a heat preservation cover hinged to corresponding positions on the top surface of the guard beam on one side in sequence along the arrangement direction of the guard beam, at least one heating lamp arranged in the heat preservation cover, humidifying nozzles arrayed in sequence at the edge of the guard beam along the axial direction of the guard beam, a temperature and humidity sensor relatively fixed at a corresponding position of the heat preservation cover for detecting the temperature and humidity in the heat preservation cover, and a controller communicatively connected to the temperature and humidity sensor and used to output a corresponding PWM signal to control the power of the heating lamp and the mist volume of the humidifying nozzle.

[0010] In some embodiments of the present disclosure, the heat-insulating cover and the guard beam are hinged by a hinge, and a limiting block for limiting the opening angle of the heat-insulating cover is provided at a corresponding position of the outer edge of the guard beam.

[0011] In some embodiments of the present disclosure, an observation window for observing the operation of the conveyor belt is provided at a corresponding position of the heat-insulating cover.

[0012] In some embodiments of the present disclosure, the cross section of the heat-insulating cover is arched.

[0013] In some embodiments of the present disclosure, the heating lamp is disposed at the top of the inner edge of the heat-insulating cover.

[0014] In some embodiments of the present disclosure, the humidification nozzle is an ultrasonic humidification nozzle.

[0015] In some embodiments of the present disclosure, a water tank is fixedly provided at the bottom of the guard beam, a main water pipe connected to the water tank is provided along the guard beam, and the humidifying nozzles are respectively connected to the main water pipe through branch pipes.

[0016] In some embodiments of the present disclosure, a heating rod controlled by the controller and a temperature sensor for detecting water temperature are provided in the water tank.

[0017] In some embodiments of the present disclosure, the humidifying nozzles are staggeredly arranged at the guard beams on both sides; the humidifying nozzles include a base and a nozzle body ball-hinged to the base.

[0018] In some embodiments of the present disclosure, the material heat preservation and moisturizing conveying device between the moistening processes further includes a touch screen communicatively connected to the controller.

[0019] One or more technical solutions provided in the embodiments of this application have at least any of the following technical effects or advantages:

[0020] 1. The heat preservation and heat acquisition in the space of the insulation cover can be achieved through the insulation cover and the heating lamp, thereby achieving the insulation effect. At the same time, by adjusting the working power of the corresponding heating lamp, the temperature at different conveyor belt positions can be controlled while achieving lighting, ensuring that the material temperature is relatively constant during the transportation process.

[0021] 2. The humidifying nozzle can control the humidity inside the insulation cover and replenish the lost water in time. At the same time, the insulation cover can also slow down the loss of water, thereby ensuring that the humidity of the material is relatively constant during the transportation process.

[0022] 3. The heating rod installed in the water source tank of the humidifying nozzle can heat the water temperature of the water tank, thereby preventing the water mist sprayed from the humidifying nozzle from having a low temperature and affecting the insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a material heat preservation and moisture retention conveying device in one embodiment of the present application.

[0024] In the above figures, 1 is a transmission belt, 11 is a guard beam, 12 is a bracket, 2 is a heat preservation cover, 21 is a handle, 22 is an observation window, 3 is a heating lamp, and 4 is a humidifying nozzle. DETAILED DESCRIPTION

[0025] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inside," "outside," "vertical," "horizontal," "clockwise," "counterclockwise," and the like, indicating positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the terms "connection" and "coupling" referred to in this application include both direct and indirect connections (couplings).

[0026] The procedures involved or relied upon in the following embodiments are all conventional or simple procedures in the art, and those skilled in the art can make conventional selections or adaptive adjustments based on specific application scenarios. The devices involved in the following embodiments, unless otherwise specified, are all conventional commercially available products.

[0027] In order to better understand the technical solution of the present application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] In order to solve the problem that the tobacco material loses moisture and decreases in temperature due to the long transmission distance between the first and second moisturizing processes, thereby affecting the moisturizing effect, this example discloses a material heat preservation and moisture retention transmission device between the moisturizing processes.

[0029] See also Figure 1 The device includes a conveyor belt 1 for conveying tobacco leaf materials. The tobacco leaves after the first lubrication are laid on the surface of the conveyor belt 1 and are transported to the second lubrication process for the second lubrication process as the conveyor belt 1 runs. In this embodiment, the conveyor belt 1 is fixedly mounted at a certain height above the ground by a bracket 12, and guard beams 11 are fixed on both sides of the conveyor belt 1. The layout direction of the guard beams 11 is consistent with the running direction of the conveyor belt 1, and the guard beams 11 on both sides are parallel to each other. In this example, the bottom of the guard beam 11 is relatively fixed to the bracket 12, thereby achieving a stable arrangement of the guard beam 11 on both sides of the conveyor belt 1.

[0030] In order to achieve heat preservation when the tobacco material is transported on the conveyor belt, in this embodiment, see Figure 1 A heat preservation cover 2 is installed above the conveyor belt 1. To prevent the installation of the heat preservation cover 2 from interfering with the inspection or cleaning of the conveyor belt, in this example, several heat preservation covers 2 are arranged end to end along the running direction of the conveyor belt 1. One side of the heat preservation cover 2 is hinged to the guard beam 11. This allows operators to open the heat preservation cover 2 at the corresponding position as needed to handle the conveyor belt section or the materials on the conveyor belt. Specifically, in this embodiment, one side of the heat preservation cover 2 is hinged to the top of the corresponding side guard beam 11 by a hinge. However, in order to prevent the heat preservation cover 2 from opening at an excessively large angle, which would make it difficult to operate when closing the heat preservation cover, a limit block is provided on the top surface of the corresponding side guard beam of the heat preservation cover. In this example, the limit block is specifically a limit plate fixed perpendicular to the top surface of the guard beam and having a certain height. The limit plate is provided on the outside of the hinge joint of the heat preservation cover. As a result, when the heat preservation cover is opened, there is positional interference between the cover body and the limit plate. By selecting limit plates of different heights, the opening angle of the heat preservation cover can be adjusted, making it easier for personnel to operate. In addition, a handle 21 is provided on the outer edge of the heat preservation cover corresponding to the side opposite to the hinge of the heat preservation cover. The handle 21 can be used to conveniently apply force to the heat preservation cover to achieve its hinged rotation and opening and closing.

[0031] See also Figure 1 In this embodiment, an observation window 22 is provided on one side of the insulation cover to facilitate observation of material transfer within the insulation cover without opening the cover. In this embodiment, the observation window is double-glazed to minimize heat loss without obstructing vision, thereby avoiding the problem of significant heat loss when the insulation cover is opened for observation. Furthermore, to enhance the insulation performance of the insulation cover, in this embodiment, the insulation cover includes an intermediate insulation layer to minimize heat exchange between the interior and exterior of the cover, thereby preventing heat loss. In other embodiments, the insulation cover is coated with an insulating sponge.

[0032] In some other embodiments, in order to avoid heat loss caused by gaps between adjacent heat-insulating covers 2, in this example, sealing strips are respectively bonded to the end faces of adjacent heat-insulating covers 2. Thus, through the deformation characteristics of the sealing strips themselves, the gaps between adjacent heat-insulating covers are relatively closed without affecting the opening and closing of the heat-insulating covers 2, thereby improving the overall heat-insulating effect of the heat-insulating covers. In addition, in some other embodiments, the end face of the cover body opposite to the hinged side of the heat-insulating cover, that is, the side with the handle, is covered with a heat-insulating rubber strip. On the one hand, this can avoid heat loss caused by gaps between the end face of the heat-insulating cover 2 and the top surface of the guard beam after the heat-insulating cover 2 is closed; on the other hand, the heat-insulating rubber strips can absorb the impact force between the heat-insulating cover and the guard beam when the heat-insulating cover is closed through the deformation characteristics of the heat-insulating rubber strips themselves, reduce the collision sound between the two, and play a protective role for the heat-insulating cover and the guard beam.

[0033] Since the heat preservation effect of the heat preservation cover 2 is limited, and the space inside the heat preservation cover 2 is not a completely enclosed space, it is inevitable that the temperature of the tobacco material will decrease as the conveying distance increases, affecting the leaf moistening effect. For this reason, in this embodiment, a plurality of heating lamps 3 are arranged in an array inside the heat preservation cover 2. When the heating lamps 3 are powered on, they can convert electrical energy into thermal energy. At the same time, they can also provide lighting inside the heat preservation cover, making it easier for the operator to observe the situation inside the heat preservation cover through the observation window. In this example, the heating lamps 3 are arranged along the center line of the heat preservation cover and are located at the top position of the inner edge of the heat preservation cover, thereby improving the uniformity of heat distribution inside the heat preservation cover. In addition, considering that the temperature of the tobacco material changes with the increase of the running distance, that is, the heat preservation heat required at different sections of the conveyor belt is different, in order to be able to specifically regulate the heating lamps 3 according to the heat demand response at different positions, in this embodiment, the heat preservation and moisturizing conveying device also includes a controller and a temperature and humidity sensor. Specifically, the controller in this example adopts PLC, and the PLC controller adjusts the heating power of the heating lamp 3 by outputting PWM signals with different duty cycles. In this embodiment, the power control of each heating lamp 3 is independent of each other, and the controller adjusts the power of each heating lamp according to demand to obtain different amounts of heat. In other embodiments, a number of adjacent heating lamps are grouped together, and the controller controls the heating lamps in groups. The temperature and humidity sensor is used to monitor the temperature and humidity information inside the insulation cover. The temperature and humidity sensor is communicated with the I / O port of the controller and specifically inputs the corresponding analog signal to the PLC. Furthermore, the controller adjusts the power of the heating lamp at the corresponding position according to the temperature information at different positions obtained by the temperature and humidity sensor and the insulation setting.

[0034] To achieve moisture retention within the insulation cover, see Figure 1In this example, humidifying nozzles 4 are arranged in an array along the axial direction of the guard beam 11 at the edges of the two guard beams. In this embodiment, in order to improve the spray uniformity of the humidifying nozzles, the humidifying nozzles 4 on both sides are arranged in a staggered manner. In addition, in this example, the humidifying nozzles 4 use ultrasonic humidifying nozzles, which use the high-frequency vibrations generated by ultrasound to oscillate water molecules into tiny particles, thereby turning water into water mist, and releasing the water mist into the air inside the heat-insulating cover, thereby achieving the purpose of moisturizing. Considering that the water mist sprayed by the humidifying nozzles 4 may condense into water droplets at the heat-insulating cover, in order to prevent the water droplets from falling directly onto the tobacco material on the conveyor belt, in this example, the cross-section of the heat-insulating cover 2 is arched. Therefore, through the arched curved surface inside the heat-insulating cover 2, the condensed water droplets can slide along the curved surface to the guard beams on both sides. Furthermore, in order to collect the water droplets that slide onto the guard beams, in this example, a water collection trough is opened on the top surface of the guard beam and along the axial direction of the guard beam inside the heat-insulating cover to drain the water.

[0035] In addition, to achieve different levels of moisturizing needs, in this embodiment, the humidity information inside the insulation cover is obtained in real time through a temperature and humidity sensor. The PLC controller adjusts its output PWM signal based on the humidity information to adjust the operating voltage of the ultrasonic humidification nozzle 4, thereby adjusting the mist volume of the ultrasonic humidification nozzle and achieving the purpose of regulating the humidity inside the insulation cover. Among them, the operation of the ultrasonic humidification nozzle 4 requires a water supply. In this embodiment, a water tank is fixed at the bottom of the guard beam, and a main water pipe connected to the water tank is arranged along the guard beam inside the insulation cover. The main water pipe obtains water from the water tank through a water pump, and then each ultrasonic humidification nozzle 4 is connected to the main water pipe through each branch pipe. In this embodiment, to achieve adaptive adjustment of the spray direction of the ultrasonic humidification nozzle, the ultrasonic humidification nozzle includes a base and a nozzle body, wherein the base is used to fix the humidification nozzle at the top surface of the guard beam, and the nozzle body and the base are ball-jointed, thereby adjusting the direction of the nozzle body to ensure the uniformity of the spray.

[0036] In addition, considering that there is a difference between the water temperature in the water tank and the temperature inside the insulation cover, which will affect the insulation effect inside the insulation cover, in this embodiment, a heating rod and a temperature sensor are provided in the water tank, and the temperature sensor is communicated with the controller. Therefore, after obtaining the water temperature in the water tank, the controller controls the heating rod to work through the relay according to the insulation temperature setting, thereby increasing the water temperature in the water tank and avoiding affecting the insulation effect.

[0037] In this embodiment, in order to realize the setting of control information such as insulation temperature and moisturizing humidity and the display of sensor detection data, the insulation and moisturizing transmission device also includes a touch screen, which is communicated with the controller, thereby realizing the interaction between the operator and the controller.

[0038] Although some preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0039] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of the inventive concept. Thus, if such changes and modifications fall within the scope of the claims of this application and their equivalents, this application is intended to include such changes and modifications.

Claims

1. A material heat preservation and moisture conservation conveying device between leaf moistening processes, characterized in that: It includes a conveyor belt, guard beams relatively fixed on both sides of the conveyor belt along the running direction of the conveyor belt, a heat-insulating cover hinged to the corresponding positions on the top surface of the guard beam on one side in sequence along the layout direction of the guard beam, at least one heating lamp arranged in the heat-insulating cover, humidifying nozzles arrayed in sequence at the edge of the guard beam along the axial direction of the guard beam, a temperature and humidity sensor relatively fixed at the corresponding position of the heat-insulating cover for detecting the temperature and humidity in the heat-insulating cover, and a controller that is communicatively connected to the temperature and humidity sensor and is used to output a corresponding PWM signal to control the power of the heating lamp and the mist volume of the humidifying nozzle.

2. The heat preservation and moisture conservation conveying device for materials between leaf moistening processes according to claim 1 is characterized in that: The heat-insulating cover and the guard beam are hinged via a hinge, and a limiting block for limiting the opening angle of the heat-insulating cover is provided at a corresponding position on the outer edge of the guard beam.

3. The material heat preservation and moisture conservation conveying device between leaf moistening processes according to claim 1 is characterized in that: An observation window for observing the running condition of the conveyor belt is provided at a corresponding position of the heat-insulating cover.

4. The material heat preservation and moisture conservation conveying device between leaf moistening processes according to claim 1 is characterized in that: The cross section of the heat-insulating cover is arched.

5. The heat preservation and moisture conservation conveying device for materials between leaf moistening processes according to claim 4 is characterized in that: The heating lamp is arranged at the top position of the inner edge of the heat-insulating cover.

6. The heat preservation and moisture conservation conveying device for materials between leaf moistening processes according to claim 1 is characterized in that: The humidifying nozzle is an ultrasonic humidifying nozzle.

7. The heat preservation and moisture conservation conveying device for materials between leaf moistening processes according to claim 1 is characterized in that: A water tank is fixedly provided at the bottom of the guard beam, a main water pipe communicating with the water tank is provided along the guard beam, and the humidifying nozzles are respectively communicated with the main water pipe through branch pipes.

8. The material heat preservation and moisture conservation conveying device between leaf moistening processes according to claim 7 is characterized in that: The water tank is provided with a heating rod controlled by the controller and a temperature sensor for detecting the water temperature.

9. The material heat preservation and moisture conservation conveying device between leaf moistening processes according to claim 1 is characterized in that: The humidifying nozzles are staggered and arranged correspondingly at the guard beams on both sides; the humidifying nozzles include a base and a nozzle body which is ball-hinged with the base.

10. The material heat preservation and moisture conservation conveying device between leaf moistening processes according to claim 1 is characterized in that: Also included is a touch screen communicatively connected to the controller.

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