Moisture control device and tobacco processing system

Abstract

This application relates to a dehumidification device and a tobacco processing system, including a pipe with a drain outlet on its side wall; a valve assembly disposed within the pipe and rotatably connected to the pipe via a rotating shaft; and a flow guide assembly disposed within the pipe and located along the pipe's axis on one side of the valve assembly, with its outer circumferential surface sealed to the inner wall of the pipe. At least a portion of the flow guide assembly forms a liquid storage tank with the inner wall of the pipe, and the liquid storage tank communicates with the drain outlet. The rotating shaft is used to switch between a closed position and an open position. In the closed position, the valve assembly is at a first opening degree, and the valve assembly is configured to guide condensate in the pipe to the liquid storage tank for discharge from the drain outlet. This application fundamentally solves the problem of clogging of the screening mesh belt due to the mixing of flavorings, smoke, etc., caused by humid and hot air, and also prevents condensate from mixing with flavorings to form a viscous substance, maintaining the cleanliness of the screening mesh belt and shortening maintenance time.

Description

Technical Field

[0001] This application relates to the field of tobacco processing technology, and in particular to dehumidification devices and tobacco processing systems. Background Technology

[0002] In the tobacco processing industry, screening mesh belts are a commonly used isolation and filtration device, widely used in the top of the rear chamber of various cylindrical equipment. They are typically composed of multiple long metal strips with evenly distributed small holes, hinged together and driven by a geared motor. Their main function is to isolate the exhaust pipe from the inside of the cylinder. While the exhaust fan removes moisture, exhaust gas, and soot from the cylinder to maintain internal negative pressure, it prevents material from being sucked out, ensuring the normal production and discharge of tobacco leaves and shreds.

[0003] Taking the fragrance addition process of silk stems in the silk processing workshop as an example, in the current production process, operators need to clean and unclog the mesh of the screening belt during maintenance, and maintain negative pressure in the cylinder using an exhaust fan during production. However, this process currently has at least the following problems: because the fragrance addition and dehumidification pipes share the main pipe with the heating and humidification equipment in the silk drying process, when the exhaust fan stops, the hot and humid air from the silk drying process flows back into the fragrance addition and dehumidification pipes. This backflow of hot and humid air, mixed with fragrance and soot, forms a viscous substance that clogs the mesh of the screening belt, causing almost all the meshes to become blocked. High-pressure air is needed to clean and unclog each mesh individually, making maintenance time-consuming, difficult, and severely impacting production efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide a dehumidification device and tobacco processing system to address the problem that the traditional tobacco stem flavoring and dehumidification pipes and the heating and humidification equipment in the tobacco drying process share the same main pipe, which causes the hot and humid air from the tobacco drying process to flow back into the tobacco stem flavoring and dehumidification pipes.

[0005] This application embodiment first provides a dehumidification device, the dehumidification device comprising:

[0006] The pipe has a drain outlet on its side wall;

[0007] A valve assembly is disposed inside the pipeline and is rotatably connected to the pipeline via a rotating shaft;

[0008] A flow guiding component is disposed inside the pipe and located on one side of the valve assembly along the axis of the pipe. The outer peripheral surface of the flow guiding component is sealed to the inner wall of the pipe. At least a portion of the flow guiding component forms a liquid storage tank with the inner wall of the pipe, and the liquid storage tank is connected to the drain outlet.

[0009] The rotating shaft is used to switch between a closed position and an open position. In the closed position, the valve assembly is at a first opening degree and is configured to guide condensate in the pipeline to the storage tank for discharge from the drain port. In the open position, the valve assembly is at a second opening degree and the pipeline is in a through state. The second opening degree is greater than the first opening degree.

[0010] In one embodiment, the valve assembly includes a valve body, the outer edge of which is fixedly connected to the rotating shaft, the rotating shaft passing through the side wall of the pipe;

[0011] The dehumidification device also includes a drive motor, which is located outside the pipe. The output end of the drive motor is connected to the rotating shaft to drive the rotating shaft to switch between the closed position and the open position.

[0012] In one embodiment, when the rotating shaft is in the closed position, the orthographic projection of the valve body along the pipeline axis is circular; there is a gap between the valve body and the inner wall of the pipeline, and / or, the outer edge of the valve body has multiple notches;

[0013] The valve body has a flow-guiding surface on the side opposite to the flow-guiding assembly. The flow-guiding surface is configured to condense the gas in the pipeline and guide the condensate to the outer edge of the valve body so that the condensate falls into the storage tank under the action of gravity.

[0014] In one embodiment, when the rotating shaft is in the closed position, the valve body has a vertex facing away from the flow guiding assembly, the vertex and the outer edge of the valve body forming the flow guiding surface; the cross-section of the flow guiding surface along the pipe axis is at least one of a straight line, a broken line, and an arc.

[0015] In one embodiment, the cross-section of the drainage surface along the axis of the pipe is a quarter-circle arc.

[0016] In one embodiment, the rotating shaft is switched from the closed position to the open position, or from the open position to the closed position, and the rotation angle of the rotating shaft is 90°;

[0017] And / or, the dehumidification device includes two rotating shafts, which are mounted on the two opposite side walls of the pipe about their axes by bearings, and the two rotating shafts are respectively fixedly connected to the valve assembly.

[0018] In one embodiment, the flow guiding assembly includes an annular plate, the outer edge of which is sealed to the inner wall of the pipe, and the inner edge of which extends toward the valve assembly. The annular plate and the inner wall of the pipe form the liquid storage tank.

[0019] The bottom side of the liquid storage tank is connected to the drain outlet.

[0020] In one embodiment, the annular plate has a flow guiding surface;

[0021] The cross-section of the guide surface along the axis of the pipe is a straight line;

[0022] Alternatively, the cross-section of the guide surface along the pipe axis is an arc, and the concave arc surface of the guide surface is located on the side facing the valve assembly.

[0023] In one embodiment, when the rotating shaft is in the closed position, the orthographic projection of the annular plate along the axis of the pipe covers the orthographic projection of the gap between the valve body and the pipe.

[0024] This application also provides a tobacco processing system, including a tobacco drying device, a stem flavoring device, and a main pipeline; and,

[0025] A first conduit connects the wire drying equipment and the main conduit;

[0026] The second pipe connects the stalk fragrance-adding device and the main pipe;

[0027] The dehumidification device described in the above embodiments is disposed in the second pipe, or disposed between the second pipe and the main pipe.

[0028] The aforementioned dehumidification device and tobacco processing system, by simultaneously installing valve components and flow guiding components inside the pipeline, effectively closes the pipeline when the rotating shaft drives the valve components to the closed position, preventing the backflow of hot and humid air during the tobacco drying process. Simultaneously, condensation occurs on the side of the valve components away from the flow guiding components, guiding the condensed liquid to the lower flow guiding components through the gap between the valve components and the inner wall of the pipeline. The flow guiding components collect the condensed liquid through a storage tank formed with the inner wall of the pipeline. The collected liquid flows out of the pipeline through a drain outlet connected to the storage tank. This design fundamentally solves the problem of clogging of the screening mesh belt due to the mixing of flavorings, smoke, etc., caused by hot and humid air. Furthermore, it prevents the condensate from mixing with flavorings to form a viscous substance, maintaining the cleanliness of the screening mesh and shortening maintenance time. Attached Figure Description

[0029] Figure 1This is a schematic diagram of the overall structure of a dehumidification device provided according to some embodiments of this application.

[0030] Figure 2 This is a perspective structural diagram of a moisture-venting device provided according to some embodiments of this application.

[0031] Figure 3 This is a cross-sectional structural schematic diagram of a dehumidification device provided according to some embodiments of this application.

[0032] Figure 4 This is a cross-sectional structural schematic diagram of a dehumidification device provided according to some embodiments of this application from another perspective.

[0033] Figure 5 This is a schematic diagram of the structure of a tobacco processing system provided according to some embodiments of this application.

[0034] Icon labels:

[0035] 100. Pipeline; 101. Sewage outlet;

[0036] 200. Valve assembly; 210. Drainage surface; 220. Notch;

[0037] 400. Shaft;

[0038] 300. Flow guiding component; 301. Liquid storage tank;

[0039] 10. Drying equipment for shredded shreds; 20. Flavoring equipment for shredded shreds; 30. Main pipeline; 40. First pipeline; 50. Second pipeline. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0046] As mentioned in the background section, because the dehumidification pipe for the shredded stems shares the main pipe with the heating and humidification equipment for the drying process, when the dehumidification fan stops, the hot and humid air from the drying process flows back into the dehumidification pipe for the shredded stems. This hot and humid air mixes with fragrance and soot, creating a viscous substance that clogs the mesh of the screening screen belt. During maintenance, almost all the mesh openings become blocked, requiring high-pressure gas to clean and unclog them one by one. This maintenance is time-consuming, difficult, and severely impacts production efficiency. Furthermore, the following problems exist: when the mesh opening rate of the screening screen belt exceeds 25% and the downtime exceeds 2 hours, the dehumidification air velocity will be lower than the process requirement of 7 m / s upon restarting. This results in insufficient negative pressure in the cylinder, causing fragrance gas to escape. Simultaneously, condensed fragrance drippings easily cause yellow stains and moldy smoke, affecting the fragrance effect and quality stability of the shredded stems. Additionally, when starting the dehumidification fan before production, motor overcurrent alarms or even failure to start often occur due to mesh blockage. The escape of fragrance gas also worsens the air quality in the production area and increases the workload of operators.

[0047] Based on the aforementioned problems, this application provides a dehumidification device and a tobacco processing system. By simultaneously installing a valve assembly and a flow guide assembly inside the pipeline, when the rotating shaft drives the valve assembly to the closed position, the valve assembly essentially closes the pipeline, preventing the backflow of hot and humid air during the tobacco drying process. Simultaneously, condensation can occur on the side of the valve assembly away from the flow guide assembly. The condensed liquid is then guided to the lower flow guide assembly through the gap between the valve assembly and the inner wall of the pipeline. The flow guide assembly collects the condensed liquid through a storage tank formed with the inner wall of the pipeline. The collected liquid flows out of the pipeline through a drain outlet connected to the storage tank. This design fundamentally solves the problem of clogging of the screening mesh belt due to the mixing of flavorings, smoke, etc., caused by hot and humid air. Furthermore, it prevents the condensate from mixing with flavorings to form a viscous substance, maintaining the cleanliness of the screening mesh belt and shortening maintenance time.

[0048] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of a dehumidification device provided according to some embodiments of this application. Figure 2This is a perspective structural diagram of a dehumidification device provided according to some embodiments of this application. One embodiment of this application first provides a dehumidification device, which can be installed on the stem flavoring dehumidification pipe 100 in the tobacco processing step, or it can be understood as adding a dehumidification device to the stem flavoring dehumidification pipe 100. The dehumidification device may include the pipe 100, a valve assembly 200, and a flow guiding assembly 300.

[0049] A drain port 101 is provided on the side wall of the pipe 100; a valve assembly 200 is disposed inside the pipe 100 and rotatably connected to the pipe 100 via a rotating shaft 400; a flow guide assembly 300 is disposed inside the pipe 100 and is located on one side of the valve assembly 200 along the axis of the pipe 100, the outer peripheral surface of the flow guide assembly 300 is sealed to the inner wall of the pipe 100, and at least a portion of the flow guide assembly 300 forms a liquid storage tank 301 with the inner wall of the pipe 100, the liquid storage tank 301 is connected to the drain port 101; wherein, the rotating shaft 400 is used to switch between a closed position and an open position, in the closed position, the valve assembly 200 is at a first opening degree, the valve assembly 200 is configured to guide the condensate in the pipe 100 to the liquid storage tank 301 for discharge from the drain port 101; in the open position, the valve assembly 200 is at a second opening degree, the pipe 100 is in a through state; the second opening degree is greater than the first opening degree.

[0050] It is understood that in this embodiment, pipe 100 refers to a short section of pipe 100 that can be added to the dehumidification pipe 100 (e.g., the stem fragrance dehumidification pipe 100). This pipe 100 mainly serves as a carrier for the valve assembly 200 and the flow guiding assembly 300, so that the valve assembly 200 and the flow guiding assembly 300 are placed in the dehumidification pipe 100 to isolate the hot and humid air inside the pipe 100, preventing the hot and humid air inside the pipe 100 from flowing back into the stem fragrance device 20. It can also be opened during the dehumidification process when the fan in the dehumidification pipe 100 is started, so as to promptly discharge the moisture from the stem fragrance device 20. Flanges can be installed at both ends of the pipe 100 to connect with other dehumidification pipes 100. A sealed connection can be achieved by bolt fixing. Specific connection methods can be understood by referring to relevant technologies, and will not be elaborated here.

[0051] In this embodiment, the pipe 100 can be designed as a cylinder, but there are no specific limitations. The drain outlet 101 can be opened on the lower part of the side wall of the pipe 100, adopting a layout design from square to round, that is, the inside is square and transitions to the outside is round, penetrating through the outer wall of the pipe 100. This design makes the area of ​​the drain outlet 101 larger and the transition smoother, avoiding material accumulation and blockage.

[0052] The design of valve assembly 200, while considering both opening and closing functions, also requires an inclined surface. This allows humid gas inside pipe 100 to condense on the inner wall of valve assembly 200 or pipe 100, and then fall along the gap between the inner wall of valve assembly 200 and pipe 100 to the guide assembly 300 below valve assembly 200. There, it is collected by the liquid storage tank 301 and discharged to the outside of pipe 100 through drain port 101. For example, the valve body of valve assembly 200 can be designed in the shape of a straw hat or a conical hat, allowing the rotating shaft 400 connected to valve assembly 200 to drive air rotation, enabling the valve body to switch between different states within pipe 100 to adapt to different operating conditions.

[0053] The rotating shaft 400 can be inserted through the side wall of the pipe 100. For example, a bearing can be installed on the side wall of the pipe 100 to support the rotating shaft 400 and reduce frictional resistance. The rotating shaft 400 can rotate under the drive of a motor, thereby causing the valve assembly 200 to switch between an open state and a closed state. To clearly describe the working mechanism of the dehumidification device of valve assembly 200 in different states, the switching of the rotating shaft 400 between the closed and open positions is used as an example. When the rotating shaft 400 is in the closed position, the corresponding valve assembly 200 is also in the closed state, and the valve assembly 200 is in the first opening degree. That is, the valve assembly 200 is basically in the state of the closed pipe 100. However, in order to prevent the condensate collected on the top of the valve assembly 200 from flowing back into the equipment below (such as the stalk fragrance device 20) during the process of switching the valve assembly 200 to the open state, a gap can be reserved between the valve assembly 200 and the inner wall of the pipe 100. At the same time, a flow guide assembly 300 is provided below the valve assembly 200. The flow guide assembly 300 can receive the liquid condensed on the inner wall of the pipe 100 and the liquid condensed on one side of the valve assembly 200, and guide the liquid collected in the liquid storage tank 301 to the outside of the pipe 100 through the drain port 101.

[0054] When the rotating shaft 400 is switched to the open position, the corresponding valve assembly 200 is switched to the open state. At this time, the pipeline 100 is in a through state, and normal equipment dehumidification work can be carried out (this specifically refers to the dehumidification operation of the dehumidification fan on the equipment below the pipeline 100).

[0055] More specifically, in this embodiment, when the equipment is in normal production, the motor can drive the rotating shaft 400 to rotate, causing the valve assembly 200 to fully open, i.e., at the second opening degree (100%). The pipe 100 is in a continuous state, and the dehumidifying fan can normally extract moisture and exhaust gas without affecting the maintenance of the negative pressure in the cylinder. Conversely, when the equipment is in a stopped or standby state, the motor can be controlled to drive the rotating shaft 400 to rotate 90°, closing the valve assembly 200, i.e., at the first opening degree (nearly 0%), to prevent the backflow of hot and humid air from the drying process.

[0056] The dehumidification device provided in this application embodiment, by simultaneously installing a valve assembly 200 and a flow guide assembly 300 inside the pipe 100, when the rotating shaft 400 drives the valve assembly 200 to the closed position, the valve assembly 200 essentially closes the pipe 100, which can prevent the backflow of humid and hot air in the drying process. At the same time, condensation can occur on the side of the valve assembly 200 away from the flow guide assembly 300, thereby guiding the condensed liquid to the flow guide assembly 300 below through the gap between the valve assembly 200 and the inner wall of the pipe 100. The flow guide assembly 300 can collect the condensed liquid through the liquid storage tank 301 formed with the inner wall of the pipe 100. The collected liquid will flow out of the pipe 100 through the drain port 101 connected to the liquid storage tank 301. This arrangement fundamentally solves the problem of fragrance, smoke and dust mixing and clogging of the screening screen belt caused by humid and hot air, and avoids the condensate and fragrance mixing to form a viscous substance, maintaining the cleanliness of the screening screen mesh and shortening the maintenance time.

[0057] Below, we will combine the appendix Figure 1 - Appendix Figure 4 The specific structure of the dehumidification device provided in the embodiments of this application will be described in detail. Among them, Figure 3 This is a cross-sectional structural schematic diagram of a dehumidification device provided according to some embodiments of this application. Figure 4 This is a cross-sectional structural schematic diagram of a dehumidification device provided according to some embodiments of this application from another perspective.

[0058] like Figure 2 and Figure 3 As shown, in some embodiments, the valve assembly 200 includes a valve body, the outer edge of which is fixedly connected to a rotating shaft 400, which passes through the side wall of the pipe 100; the dehumidification device also includes a drive motor, which is located outside the pipe 100, and the output end of the drive motor is connected to the rotating shaft 400 to drive the rotating shaft 400 to switch between a closed position and an open position.

[0059] Understandably, the edge of the valve body can be fixed to the end of the rotating shaft 400 with bolts. The rotating shaft 400 passes through the side wall of the pipe 100, and a bearing can be installed on the side wall. For example, the outer ring of the bearing is embedded in a pre-set bearing seat in the pipe 100, and the inner ring is interference-fitted with the rotating shaft 400 to reduce rotational resistance. Of course, to increase balance, a rotating shaft 400 can be set on each of the two opposite sides of the valve body, but there is no specific restriction.

[0060] The drive motor can be a pneumatic actuator, such as a vane cylinder, whose output shaft is connected to one end of the rotating shaft 400 via a coupling. The pneumatic actuator can be connected to the equipment's PLC control system and drive the rotating shaft 400 to rotate via a pneumatic pressure signal. When the PLC receives a stop signal from the equipment, the pneumatic actuator supplies air, pushing the rotating shaft 400 to the closed position; when the equipment starts, the pneumatic actuator supplies air in the reverse direction, and the rotating shaft 400 rotates back to the open position.

[0061] It should be noted that the valve body in this example can be a conical butterfly valve body, and the specific structure can be understood by referring to the structure below.

[0062] like Figure 2 As shown, in some embodiments, when the rotating shaft 400 is in the closed position, the orthographic projection of the valve body along the axis of the pipe 100 is circular; there is a gap between the valve body and the inner wall of the pipe 100; the valve body has a flow-guiding surface 210 on the side opposite to the flow-guiding assembly 300, the flow-guiding surface 210 is configured to condense the gas in the pipe 100 and guide the condensate to the outer edge of the valve body so that the condensate falls into the storage tank 301 under the action of gravity.

[0063] Specifically, when the valve body is in the closed state, its vertical projection is circular, forming an annular gap with the inner wall of the pipe 100. This annular gap facilitates the flow of condensate into the lower storage tank 301 while preventing backflow of hot and humid air above. In one example, the outer edge of the valve body has multiple notches 220. Specifically, in addition to maintaining a gap between the valve body and the inner wall of the pipe 100, multiple notches 220, such as semi-circular notches 220, can be provided on the outer edge of the valve body to further increase the condensate flow path and prevent the accumulation of viscous substances.

[0064] In addition, the top of the valve body (the side opposite to the flow guide assembly 300) is a conical surface, and the angle between the generatrix of the conical surface and the pipeline axis can be 45° to form a flow guide surface 210. When the steam comes into contact with the conical surface and condenses, the liquid flows along the conical surface to the edge notch 220 and the gap, and falls into the liquid storage tank 301 under the action of gravity.

[0065] In this embodiment, the design of the gap and notch 220 is conducive to improving the discharge of condensate and preventing backflow of water above the valve body. The design of the drainage surface 210 is also conducive to increasing the speed at which condensate slides down and reducing the residence time.

[0066] like Figure 2 and Figure 4 As shown, in some embodiments, when the shaft 400 is in the closed position, the valve body has a vertex away from the flow guide assembly 300, and the vertex and the outer edge of the valve body form a flow guide surface 210; the cross-section of the flow guide surface 210 along the axis of the pipe 100 is at least one of a straight line, a broken line, and an arc.

[0067] Understandably, the valve body's flow-guiding surface 210 can be designed as a cone. Alternatively, the cross-section of the flow-guiding surface 210 can be designed as an arc to maintain smooth airflow within the pipe 100 when the valve body is switched to the open state. In one example, the cross-section of the flow-guiding surface 210 along the axis of the pipe 100 is a quarter-circle arc. Specifically, the quarter-circle arc surface allows condensate to quickly converge to the edge under surface tension, improving the condensate's flow guiding efficiency.

[0068] In some embodiments, the rotating shaft 400 is switched from a closed position to an open position, or from an open position to a closed position, and the rotation angle of the rotating shaft 400 is 90°.

[0069] Specifically, the rotating shaft 400 needs to rotate 90° to switch between the open and closed positions, corresponding to the valve body rotating from fully extended to fully fitting the inner wall of the pipe 100. This angle design minimizes the valve body's switching stroke and makes the structure compact.

[0070] like Figure 3 As shown, in one example, the dehumidification device includes two rotating shafts 400, which are mounted by bearings on the two side walls of the pipe 100 about their axial directions, and the two rotating shafts 400 are respectively fixedly connected to the valve assembly 200.

[0071] Specifically, two rotating shafts 400 are symmetrically installed on the left and right side walls of the pipeline 100, and are supported by bearings respectively, so as to fix the two sides of the valve body together and improve the stability of the valve body rotation.

[0072] like Figure 4 As shown, in some embodiments, the flow guiding assembly 300 includes an annular plate, the outer edge of which is sealed to the inner wall of the pipe 100, and the inner edge of which extends toward the valve assembly 200. The annular plate and the inner wall of the pipe 100 form a liquid storage tank 301. The bottom side of the liquid storage tank 301 is connected to the drain outlet 101.

[0073] Understandably, the outer edge of the annular plate can be welded and sealed to the inner wall of the pipe 100, and the inner edge extends upward (towards the valve assembly 200) to form a U-shaped liquid storage tank 301 with the inner wall of the pipe 100 to accommodate condensate generated during shutdown. A drain port 101 is provided on the inner wall of the pipe 100 at the bottom of the side corresponding to the liquid storage tank 301. This drain port 101 can promptly drain the condensate in the liquid storage tank 301 to prevent water from overflowing into the equipment below the pipe 100.

[0074] like Figure 4As shown, in some embodiments, the annular plate has a flow guiding surface, the cross-section of which along the axis of the pipe 100 is a straight line; or, the cross-section of which along the axis of the pipe 100 is an arc, the concave arc surface of which is located on the side facing the valve assembly 200.

[0075] Specifically, the cross-section of the annular plate can be a straight line or an arc, but it is inclined relative to the axis of the pipe 100 so that the condensate can flow to the bottom of the storage tank 301 and be discharged from the drain port 101 in a timely manner. In this embodiment, the concave arc surface of the guide surface is designed to face the valve assembly 200. This arrangement can form a funnel-shaped storage tank 301 with the inner wall of the pipe 100. On the other hand, the convex annular plate is more conducive to the flow of air in the pipe 100 when the valve body is opened, and can further prevent the backflow of hot and humid air in the wire drying process.

[0076] In some embodiments, when the shaft 400 is in the closed position, the orthographic projection of the annular plate along the axis of the pipe 100 covers the orthographic projection of the gap between the valve body and the pipe 100.

[0077] Specifically, the width of the annular plate needs to be greater than the gap between the valve body and the pipe 100 to ensure that when the condensate drips from the gap, it falls directly into the liquid storage tank 301, avoiding leakage to the equipment below.

[0078] Based on the same inventive concept, embodiments of this application also provide a tobacco processing system, such as... Figure 5 As shown, Figure 5 This is a schematic diagram of a tobacco processing system provided according to some embodiments of this application. The tobacco processing system may include a tobacco drying device 10, a stem flavoring device 20, and a main pipe 30; as well as a first pipe 40, a second pipe 50, and the dehumidification device described in the above embodiments.

[0079] The first pipe 40 connects the drying equipment 10 and the main pipe 30; the second pipe 50 connects the stem fragrance equipment 20 and the main pipe 30; the dehumidification device is installed in the second pipe 50, or between the second pipe 50 and the main pipe 30.

[0080] Understandably, the tobacco drying equipment 10 is mainly used for drying tobacco shreds, and its exhaust port is connected to the main exhaust pipe 100 via the first pipe 40. The stem flavoring equipment 20 is mainly used for flavoring stem shreds, and its exhaust port is connected to the main pipe 30 via the second pipe 50. An exhaust fan is installed on the second pipe 50, and the exhaust device is installed on the section of the second pipe 50 between the fan outlet and the main pipe 30, close to the fan outlet for easy maintenance. The main pipe 30 mainly collects the exhaust airflow from the tobacco drying equipment 10 and the stem flavoring equipment 20 and connects it to the workshop's main exhaust system.

[0081] The exhaust pipe 100 is connected to the second pipe 50 via a flange. The flange sealing surface uses a spiral wound gasket, and the bolts are tightened evenly. The axis of the conical butterfly valve assembly inside the device coincides with the axis of the second pipe 50 to ensure uniform airflow.

[0082] Under normal production conditions, when the stem and shred fragrance-adding equipment 20 starts, the PLC controls the pneumatic actuator to drive the rotating shaft 400 to rotate 90°, the conical butterfly valve fully opens (second opening degree), the second pipe 50 is opened, and the dehumidifying fan draws out the moisture inside the stem and shred fragrance-adding equipment 20, which is then discharged through the second pipe 50 and the main pipe 30. When the drying equipment 10 is running simultaneously, its dehumidifying airflow merges into the main pipe 30 through the first pipe 40. The two airflows mix in the main pipe 30 before being discharged without interfering with each other.

[0083] In the shutdown or standby state, after the stem and shred fragrance adding equipment 20 stops, the dehumidification fan stops running. After the residual airflow in the pipeline 100 is emptied, the PLC sends a signal to the pneumatic actuator, driving the rotating shaft 400 to rotate to the closed position. The conical butterfly valve adheres to the inner wall of the second pipeline 50 (first opening), preventing the hot and humid air from the drying equipment 10 in the main pipeline 30 from flowing back into the stem and shred fragrance adding equipment 20. The small amount of hot and humid air flowing back condenses in the second pipeline 50, and the liquid slides down the conical butterfly valve's guide surface 210 into the annular plate liquid storage tank 301, and is discharged to the workshop floor drain through the drain port 101, preventing the condensate from mixing with the fragrance and clogging the screening screen belt.

[0084] In this embodiment, when the stem fragrance adding equipment 20 is stopped and the stem drying equipment 10 is running, the dehumidification device is closed, and the hot and humid air from the stem drying process in the main pipe 30 cannot flow back into the screening mesh belt of the stem fragrance adding equipment 20 through the second pipe 50, thus solving the problem of fragrance and smoke dust mixing and clogging of the mesh caused by hot and humid air from the root.

[0085] In this application, by integrating the aforementioned dehumidification device into the tobacco processing system, the clogging rate of the screening mesh can be reduced after the stem flavoring equipment 20 is shut down.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A moisture-removing device, characterized in that, The dehumidification device includes: The pipe has a drain outlet on its side wall; A valve assembly is disposed inside the pipeline and is rotatably connected to the pipeline via a rotating shaft; A flow guiding component is disposed inside the pipe and located on one side of the valve assembly along the axis of the pipe. The outer peripheral surface of the flow guiding component is sealed to the inner wall of the pipe. At least a portion of the flow guiding component forms a liquid storage tank with the inner wall of the pipe, and the liquid storage tank is connected to the drain outlet. The rotating shaft is used to switch between a closed position and an open position. In the closed position, the valve assembly is at a first opening degree and is configured to guide condensate in the pipeline to the storage tank for discharge from the drain port. In the open position, the valve assembly is at a second opening degree and the pipeline is in a through state. The second opening degree is greater than the first opening degree.

2. The dehumidification device according to claim 1, characterized in that, The valve assembly includes a valve body, the outer edge of which is fixedly connected to the rotating shaft, and the rotating shaft passes through the side wall of the pipe. The dehumidification device also includes a drive motor, which is located outside the pipe. The output end of the drive motor is connected to the rotating shaft to drive the rotating shaft to switch between the closed position and the open position.

3. The dehumidification device according to claim 2, characterized in that, When the rotating shaft is in the closed position, the orthographic projection of the valve body along the pipeline axis is circular; there is a gap between the valve body and the inner wall of the pipeline, and / or, the outer edge of the valve body has multiple notches; The valve body has a flow-guiding surface on the side opposite to the flow-guiding assembly. The flow-guiding surface is configured to condense the gas in the pipeline and guide the condensate to the outer edge of the valve body so that the condensate falls into the storage tank under the action of gravity.

4. The dehumidification device according to claim 3, characterized in that, When the rotating shaft is in the closed position, the valve body has a vertex that is away from the flow guiding component, and the vertex and the outer edge of the valve body form the flow guiding surface; the cross-section of the flow guiding surface along the pipeline axis is at least one of a straight line, a broken line, and an arc.

5. The dehumidification device according to claim 4, characterized in that, The cross-section of the drainage surface along the axis of the pipe is a quarter-circle arc.

6. The dehumidification device according to any one of claims 1-5, characterized in that, When the rotating shaft is switched from the closed position to the open position, or from the open position to the closed position, the rotation angle of the rotating shaft is 90°. And / or, the dehumidification device includes two rotating shafts, which are mounted on the two opposite side walls of the pipe about their axes by bearings, and the two rotating shafts are respectively fixedly connected to the valve assembly.

7. The dehumidification device according to any one of claims 2-5, characterized in that, The flow guiding assembly includes an annular plate, the outer edge of which is sealed to the inner wall of the pipe, and the inner edge of which extends toward the valve assembly. The annular plate and the inner wall of the pipe form the liquid storage tank. The bottom side of the liquid storage tank is connected to the drain outlet.

8. The dehumidification device according to claim 7, characterized in that, The annular plate has a flow guiding surface; The cross-section of the guide surface along the axis of the pipe is a straight line; Alternatively, the cross-section of the guide surface along the pipe axis is an arc, and the concave arc surface of the guide surface is located on the side facing the valve assembly.

9. The dehumidification device according to claim 7, characterized in that, When the rotating shaft is in the closed position, along the axis of the pipe, the orthographic projection of the annular plate covers the orthographic projection of the gap between the valve body and the pipe.

10. A tobacco processing system, characterized in that, This includes drying equipment, flavoring equipment for the shredded stems, and main piping; and, A first conduit connects the wire drying equipment and the main conduit; The second pipe connects the stalk fragrance-adding device and the main pipe; The dehumidification device according to any one of claims 1-9, wherein the dehumidification device is disposed in the second pipe, or disposed between the second pipe and the main pipe.

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