Tobacco sample taking device

Abstract

The application provides a tobacco sampling device, comprising a bunker, a sampling assembly and a sealing assembly, a side wall of the bunker is provided with a sampling port, at least part of the sealing assembly is rotationally arranged on the circumferential side of the sampling port to seal the sampling port, at least part of the sampling assembly is arranged in part of the sealing assembly, a sampling end of the sampling assembly is rotationally connected with a sampling shovel, and the sampling assembly is configured to drive the sampling shovel to pass through the sealing assembly in a first direction, to be embedded into the bunker through the sampling port when the sampling port is open, and to sample tobacco in the bunker. The application automatically completes tobacco sampling by a mechanical mode, the sampling process is reliably sealed, and the sampling effect is improved.

Description

Technical Field

[0001] This application relates to the field of tobacco sampling technology, and in particular to a tobacco sampling device. Background Technology

[0002] In the cigarette manufacturing industry, the quality of tobacco shreds plays a decisive role in the final quality of cigarette products. Precisely controlling various characteristics of the incoming tobacco shreds, such as moisture content, shred structure, and impurity content, throughout the entire process from raw material input to finished product output is a crucial step in ensuring stable cigarette product quality.

[0003] Currently, the industry still mainly relies on manual sampling for sampling the tobacco shreds supplied to cigarette machines. However, manual sampling is inefficient and may also lead to the tobacco shreds coming into contact with the external environment due to the destruction of the material hopper's seal, causing moisture loss or impurity contamination and affecting the original state of the tobacco shreds.

[0004] Therefore, developing an automated tobacco shred sampling device that can adapt to the production rhythm of cigarette machines, has strong sample representativeness, and has reliable sealing has become an urgent technical problem to be solved in the field of tobacco processing equipment. Utility Model Content

[0005] This application provides a tobacco shred sampling device that automatically completes tobacco shred sampling mechanically, and the sampling process is sealed and reliable, thus improving the sampling effect.

[0006] This application provides a tobacco shred sampling device, including: a hopper, a sampling component, and a sealing component. The hopper has a sampling port on its side wall, and at least part of the sealing component is rotatably disposed on the periphery of the sampling port to seal the sampling port.

[0007] At least a portion of the sampling component is inserted into and located within a portion of the sealing component. The sampling end of the sampling component is rotatably connected to a sampling shovel. The sampling component is configured to drive the sampling shovel through the sealing component in a first direction when the sampling port is open, embed it into the hopper via the sampling port, and sample the tobacco shreds in the hopper.

[0008] In one embodiment, the sealing assembly includes a sealing valve and a sealing sleeve, the sealing valve being rotatably disposed on the periphery of the sampling port to seal the sampling port;

[0009] The sealing sleeve is connected to the side of the sealing valve away from the sampling port. At least a portion of the sampling assembly passes through and is located in the sealing sleeve. The sampling assembly is configured to drive the sampling shovel through the sealing sleeve and into the hopper along the first direction when the sampling port is open.

[0010] In one embodiment, the sealing sleeve is a hollow cylindrical component, and the sealing valve includes a valve seat and a valve body rotatably connected to the valve seat. The valve seat is disposed on the periphery of the sampling port, and the valve body seals the sampling port.

[0011] The valve body and the sealing sleeve are coaxially arranged along the first direction.

[0012] In one embodiment, the sampling assembly further includes a robotic arm, with the sampling shovel rotatably connected to the sampling end of the robotic arm, and the robotic arm driving the sampling shovel to move.

[0013] In one embodiment, the hopper includes at least one layer of tobacco along a second direction, and the sampling shovel is provided with a pressure sensor, which is configured to monitor the shovel insertion resistance in real time as the sampling shovel is embedded into the tobacco layer.

[0014] When the reading of the pressure sensor is less than a preset value, the sampling shovel continues to move downward; when the reading of the pressure sensor is greater than or equal to the preset value, the sampling shovel stops moving downward.

[0015] In one embodiment, the hopper contains at least deep tobacco, middle tobacco and shallow tobacco along the second direction, and a position sensor is provided in the hopper;

[0016] The tobacco sampling device also includes a controller, which is electrically connected to the pressure sensor, the sampling shovel, and the position sensor respectively.

[0017] The position sensor is configured to acquire the position of the tobacco layer in the hopper and send a signal to the controller. The controller is configured to receive the signal and control the sampling shovel to sample at least one of the deep tobacco layer, the middle tobacco layer, and the shallow tobacco layer.

[0018] In one embodiment, a discharge channel and a discharge box are also included;

[0019] The sealing valve has a bottom outlet on its side, one end of the unloading channel is connected to the bottom outlet, and the other end of the unloading channel away from the sealing valve is connected to the unloading box.

[0020] After the sampling component has taken a sample, the sampling shovel is configured to retract and communicate with the unloading channel to transport the sample to the unloading box through the unloading channel.

[0021] In one embodiment, a baffle is provided at one end of the unloading channel near the bottom outlet, the baffle being used to seal between the bottom outlet and the unloading channel;

[0022] After the sampling component has taken a sample, the sampling shovel is configured to retract to trigger the baffle to open, and the bottom discharge port and the unloading channel are connected.

[0023] In one embodiment, a cleaning component is also included, which is rotatably disposed on the robotic arm and configured to move to clean the sampling shovel after sampling.

[0024] In one embodiment, the cleaning assembly includes a linkage and a brush, the linkage being rotatably mounted on the robotic arm, and the brush being disposed at the end of the linkage away from the robotic arm.

[0025] The tobacco shred sampling device provided in this application embodiment automatically completes tobacco shred sampling in a mechanical manner by setting up a sampling component and a sealing component, realizing dynamic sealing and accurate sampling. While ensuring the airtightness of the hopper, it realizes the layered sampling of tobacco shreds and self-cleaning function, and the sampling process is reliably sealed, thus improving the sampling effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the sealing assembly sealing the sampling port of the tobacco sampling device provided in the embodiments of this application;

[0028] Figure 2 A schematic diagram of the structure of the tobacco sampling device provided in this application embodiment, showing the sealing assembly opened to expose the sampling port;

[0029] Figure 3 A schematic diagram of the structure of the tobacco shred sampling device provided in this application embodiment, showing the sampling shovel extending into the hopper to take samples;

[0030] Figure 4 A schematic diagram of the structure of the tobacco sampling device provided in this application embodiment after taking a sample, which retracts and connects to the unloading channel;

[0031] Figure 5 A schematic diagram of the self-cleaning structure of the tobacco sampling device provided in this application embodiment after unloading the sample;

[0032] Figure 6 This is a schematic diagram of the unloading channel and unloading box of the tobacco sampling device provided in the embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the control logic of the tobacco sampling device provided in the embodiments of this application.

[0034] Figure label:

[0035] 100. Tobacco shred sampling device;

[0036] 110. Hopper; 111. Sampling port;

[0037] 120. Sampling assembly; 121. Robotic arm; 122. Sampling shovel;

[0038] 130. Sealing assembly; 131. Sealing valve; 132. Sealing sleeve;

[0039] 141. Deep tobacco; 142. Middle tobacco; 143. Shallow tobacco;

[0040] 150. Unloading channel; 151. Baffle;

[0041] 160. Unloading box; 161. Transparent observation window;

[0042] 170. Cleaning component; 171. Linkage rod; 172. Brush. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] In related technologies, the industry still mainly relies on manual sampling for sampling the tobacco shreds supplied to cigarette machines. Manual sampling requires opening the hopper or related channels during the intervals between cigarette machine operations. This not only interrupts the normal production process and reduces production efficiency, but may also cause the tobacco shreds to come into contact with the external environment due to the destruction of the hopper's seal, resulting in moisture loss or impurity contamination and affecting the original state of the tobacco shreds.

[0048] To address the aforementioned issues, this application provides a tobacco shred sampling device. By setting up a sampling component and a sealing component, it automatically completes tobacco shred sampling in a mechanical manner, achieving dynamic sealing and precise sampling. While ensuring the airtightness of the hopper, it also enables layered sampling of tobacco shreds and self-cleaning functions. Furthermore, the sampling process is reliably sealed, improving the sampling effect.

[0049] The following will combine Figures 1 to 7 The specific structure of the tobacco sampling device provided in the embodiments of this application will be described.

[0050] Reference Figure 1 and Figure 2 As shown, this application embodiment provides a tobacco shred sampling device 100, including a hopper 110, a sampling component 120 and a sealing component 130. The side wall of the hopper 110 is provided with a sampling port 111, and at least part of the sealing component 130 is rotatably disposed on the periphery of the sampling port 111 to seal the sampling port 111.

[0051] The hopper 110 is a key component in the cigarette production equipment. Its main function is to temporarily store and stably supply tobacco shreds, ensuring that the cigarette machine produces cigarettes continuously and evenly.

[0052] In this embodiment, the sampling port 111 is located on the side wall of the hopper 110. Compared to the top or bottom, top sampling is prone to material accumulation, and bottom sampling is prone to clogging. Side wall sampling reduces the risk of tobacco shreds accumulating at the opening due to gravity, ensuring that the sampling port 111 directly extracts dynamically flowing tobacco shreds under the action of the robotic arm. The aperture of the sampling port 111 is not limited and can be set according to actual needs.

[0053] It should be noted that under normal conditions, the sealing component 130 seals the sampling port 111, isolating the internal and external environments of the hopper 110 and preventing the loss of tobacco moisture or the intrusion of external impurities. When sampling is required, the sealing component 130 rotates to open the sampling port 111, providing a channel for the sampling component 120. After sampling is completed, it resets and seals again, achieving a dynamic sealing effect of "opening when sampling and sealing when not sampling".

[0054] Reference Figure 1 and Figure 2 As shown, at least a portion of the sampling component 120 is inserted into and located within a portion of the sealing component 130. The sampling end of the sampling component 120 is rotatably connected to a sampling shovel 122. The sampling component 120 is configured to drive the sampling shovel 122 through the sealing component 130 in a first direction when the sampling port 111 is open, embed it into the hopper 110 via the sampling port 111, and sample the tobacco shreds in the hopper 110.

[0055] For example, the first direction is the direction of movement toward the interior of the hopper 110, which can be referred to Figure 1 and Figure 2 The direction indicated by the middle arrow 'a'.

[0056] Specifically, the sampling shovel 122 can be opened, closed and flipped through a rotating structure. When the sealing component 130 opens the sampling port 111, the sampling shovel 122 passes through the sealing component 130 and is embedded in the tobacco layer through the sampling port 111. After sampling is completed, the sampling component 120 drives the sampling shovel 122 to retract and return to the initial position through the sealing component 130, thus completing unloading and self-cleaning.

[0057] in, Figure 2 With sampling port 111 open, sampling shovel 122 moves along direction a and embeds itself into the tobacco layer through sampling port 111. The state of embedding into the tobacco layer can be referred to Figure 3 As shown.

[0058] In one embodiment, reference Figures 1 to 3 As shown, the sealing assembly 130 may include a sealing valve 131 and a sealing sleeve 132. The sealing valve 131 is rotatably disposed on the periphery of the sampling port 111 to seal the sampling port 111.

[0059] The sealing sleeve 132 is connected to the side of the sealing valve 131 away from the sampling port 111. At least part of the sampling assembly 120 is inserted and located in the sealing sleeve 132. The sampling assembly 120 is configured to drive the sampling shovel 122 through the sealing sleeve 132 and into the hopper 110 in a first direction when the sampling port 111 is open.

[0060] For example, the sealing valve 131 can be connected to the periphery of the sampling port 111 via a flange, and the material can be stainless steel. For example, the sealing valve 131 and the sealing sleeve 132 can be rigidly connected, which helps to provide a stable movement track for the sampling assembly 120.

[0061] For example, the sealing sleeve 132 is a hollow cylindrical structure, made of the same material as the sealing valve 131, and integrates a bipolar sealing system inside. For example, dynamic sealing: a magnetic fluid sealing ring is used to adapt to the movement trajectory of the sampling component 120 and maintain the seal during the movement of the robotic arm to prevent gas or tobacco leakage; static sealing: a rubber lip seal is provided at the connection end with the sealing valve 131 to enhance the overall airtightness of the channel.

[0062] In addition, it should be noted that the sealing sleeve 132 not only serves a sealing function, but also, since the sampling component 120 passes through the inside of the sleeve, its range of motion is constrained by the sleeve to ensure positioning accuracy. This provides motion guidance for the robotic arm while isolating it from the motion environment. It can be understood that the sealing sleeve 132 can also serve as an extended sealing channel for the side wall of the hopper 110.

[0063] In one embodiment, the sealing sleeve 132 is a hollow cylindrical component, and the sealing valve 131 may include a valve seat and a valve body rotatably connected to the valve seat. The valve seat is disposed on the periphery of the sampling port 111, and the valve body seals the sampling port 111.

[0064] Understandably, the valve seat provides the mounting base for the valve body. Under normal conditions, the valve body fits tightly against the sampling port 111, isolating the inside and outside of the hopper 110. When sampling, the valve body rotates and opens, forming a passage that connects with the sealing sleeve 132.

[0065] The valve body and the sealing sleeve 132 are coaxially arranged along the first direction, that is, their central axes coincide. In this way, after the sampling component 120 passes through the sealing sleeve 132, it can smoothly enter the hopper 110 through the channel after the valve body is opened along a straight line, avoiding motion interference caused by axis offset. At the same time, it ensures that the dynamic sealing structure of the sealing sleeve 132 corresponds precisely to the sealing surface of the valve body, thereby enhancing the overall airtightness.

[0066] In one embodiment, reference Figures 1 to 3 As shown, the sampling assembly 120 also includes a robotic arm 121, and a sampling shovel 122 is rotatably connected to the sampling end of the robotic arm 121. The robotic arm 121 drives the sampling shovel 122 to move.

[0067] The robotic arm 121 enables precise three-dimensional positioning, adapts to sampling tobacco layers at different depths within the hopper 110, and, through its rotational connection with the sampling shovel 122, allows for switching between sampling and unloading actions, thereby improving the level of automation in sampling.

[0068] In one embodiment, reference Figure 3 As shown, the hopper 110 includes at least one layer of tobacco shreds along the second direction b. A pressure sensor may be provided on the sampling shovel 122. The pressure sensor is configured to monitor the shovel insertion resistance in real time during the process of the sampling shovel 122 embedding into the tobacco shreds. When the reading of the pressure sensor is less than a preset value, the sampling shovel 122 continues to move downward. When the reading of the pressure sensor is greater than or equal to the preset value, the sampling shovel 122 stops moving downward.

[0069] For example, the second direction can be referred to Figures 1 to 3 As indicated by the middle arrow b, the second direction in this embodiment can be the height direction of the hopper 110.

[0070] It should be noted that the preset value can be set according to actual needs. In this embodiment, the pressure sensor is mainly used to monitor the density of the tobacco layer. For example, the preset value can be a threshold for judging the density of the tobacco layer, such as 5N. During the embedding process of the tobacco layer, the pressure sensor converts the resistance of the tobacco encountered during insertion into an electrical signal feedback in real time.

[0071] Among them, reference Figure 7 As shown, the sampling shovel 122 monitors the shovel resistance in real time during the process of embedding into the tobacco layer. When the pressure sensor reading is less than the preset value, it indicates that the current tobacco layer is relatively sparse. The sampling shovel 122 continues to move down to ensure that a sufficient amount of sample is obtained. When the pressure sensor reading is greater than or equal to the preset value, it indicates that the tobacco layer has reached a suitable density. The sampling shovel 122 stops moving down and closes to clamp the sample. This helps to avoid excessive shoveling, which would cause the tobacco to be compressed and its physical structure to be damaged. This ensures that the sample can truly reflect the original state of the tobacco layer.

[0072] In one embodiment, reference Figures 1 to 3 As shown, the hopper 110 includes at least a deep layer of tobacco 141, a middle layer of tobacco 142, and a shallow layer of tobacco 143 along the second direction b. A position sensor is installed in the hopper 110. The tobacco sampling device 100 also includes a controller, which is electrically connected to the pressure sensor, the sampling shovel 122, and the position sensor.

[0073] The position sensor is configured to acquire the position of the tobacco layer in the hopper 110 and send a signal to the controller. The controller is configured to receive the signal and control the sampling shovel 122 to sample at least one of the deep tobacco layer 141, the middle tobacco layer 142 and the shallow tobacco layer 143.

[0074] By including position sensors, the position information of deep tobacco shreds 141, middle tobacco shreds 142 and shallow tobacco shreds 143 in the hopper 110 can be acquired in real time and fed back to the controller. The controller, combined with the shovel entry resistance data monitored by the pressure sensor, precisely controls the sampling shovel 122 to perform sampling action in the target tobacco shred layer. This not only realizes the stratified sampling of tobacco shreds at different depths in the hopper 110 to ensure the representativeness of the sample, but also avoids excessive compression of the tobacco shreds through pressure feedback adjustment to ensure the original state of the sample.

[0075] In one embodiment, reference Figure 4 and Figure 6 As shown, it may also include a discharge channel 150 and a discharge box 160; a bottom discharge port is provided on the side of the sealing valve 131, one end of the discharge channel 150 is connected to the bottom discharge port, and the other end of the discharge channel 150 away from the sealing valve 131 is connected to the discharge box 160.

[0076] When the sampling component 120 has finished taking the sample, the robotic arm 121 drives the sampling shovel 122 to retract to the vicinity of the sealing valve 131 (e.g., Figure 4 As shown), at this time, the sampling shovel 122 is connected to the entrance of the unloading channel 150; then the sampling shovel 122 is rotated 120° to unload the sample into the unloading channel 150, and the sample slides into the unloading box 160 along the inclined unloading channel 150 with the help of gravity.

[0077] For example, the sample can be along Figure 4 The material is discharged into the discharge channel 150 in the direction of arrow c, and continues to slide into the discharge box 160 in the direction of arrow c.

[0078] Additionally, refer to Figure 6 As shown, the unloading box 160 can be equipped with a weighing module and a transparent observation window 161, which can record sample quality in real time and visually observe the sample status. The unloading channel 150 can be tilted, for example, the unloading channel 150 can be tilted downwards at 30° relative to the horizontal direction. In this way, using gravity to transport the sample helps to avoid tobacco residue or blockage, ensuring the complete transfer of the sample.

[0079] In one embodiment, reference Figure 6 As shown, a baffle 151 can be provided at one end of the unloading channel 150 near the bottom outlet. The baffle 151 is used to block the bottom outlet and the unloading channel 150. After the sampling component 120 takes a sample, the sampling shovel 122 is configured to retract to trigger the baffle 151 to open, and the bottom outlet and the unloading channel 150 are connected.

[0080] It should be noted that there is no limitation on the way the baffle 151 is opened. For example, the sampling shovel 122 and the baffle 151 can be in mechanical contact. For example, the sampling shovel 122 can be provided with a trigger (e.g., a protrusion), and a linkage structure (e.g., a push rod or lever) can be provided at the pivot of the baffle 151. When the protrusion contacts the linkage structure, the protrusion presses against the push rod or connecting rod, causing the baffle 151 to rotate around the pivot to open the channel.

[0081] For example, the sampling shovel 122 and the baffle 151 can be inductively connected. The baffle 151 can be equipped with a micro switch or a magnetic sensor. When a trigger is brought close to the micro switch or magnetic sensor, the baffle 151 is controlled to move by an electrical signal.

[0082] When the baffle 151 is opened, the bottom outlet is connected to the unloading channel 150. When the sampling shovel 122 flips to unload, the sample can smoothly enter the slide. After unloading, the baffle 151 is reset by spring or closed by controller command, restoring the sealed state.

[0083] In one embodiment, reference Figure 5 As shown, it may also include a cleaning assembly 170, which is rotatably mounted on the robotic arm 121 and configured to move to clean the sampling shovel 122 after sampling. Specifically, the cleaning assembly 170 may include a link 171 and a brush 172, with the link 171 rotatably mounted on the robotic arm 121 and the brush 172 located at the end of the link 171 away from the robotic arm 121.

[0084] The connection position of link 171 is not limited and can be set according to actual needs. Link 171 can be connected to robotic arm 121 through a rotating structure such as a hinge shaft or a rotary joint, and its angle and position can be adjusted with the movement of robotic arm 121. Brush 172 can be a rotating nylon brush with a detachable and replaceable brush head. This embodiment does not limit this aspect.

[0085] When the sampling shovel 122 finishes unloading and retracts to the preset cleaning station, the robotic arm 121 drives the cleaning component 170 to move: the connecting rod 171 rotates to adjust the position of the brush 172 so that the brush 172 fits against the shovel surface of the sampling shovel 122; then the brush 172 rotates at high speed, and at the same time the robotic arm 121 drives the sampling shovel 122 or the cleaning component 170 to move relative to each other in three dimensions to achieve comprehensive cleaning of the shovel surface and edges. After cleaning is completed, the cleaning component 170 resets with the robotic arm 121, waiting for the next cleaning cycle.

[0086] For example, when the brush 172 is in contact with the shovel surface of the sampling shovel 122, it can move along... Figure 5 Clean the sampling shovel 122 in the direction of the middle arrow d.

[0087] By setting up the connecting rod 171 and the brush 172, the sampling shovel 122 is automatically cleaned, reducing cross-contamination between samples from different batches or different tobacco layers and improving the sampling effect.

[0088] This embodiment provides a tobacco shred sampling device. By setting up a sampling component and a sealing component, it automatically completes tobacco shred sampling in a mechanical manner, achieving dynamic sealing and accurate sampling. While ensuring the airtightness of the hopper, it realizes layered sampling of tobacco shreds and self-cleaning function. Moreover, the sampling process is reliably sealed, improving the sampling effect.

[0089] 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.

[0090] The above embodiments merely illustrate 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 tobacco shred sampling device, characterized in that, include: The hopper includes a sampling assembly and a sealing assembly. The sampling port is provided on the side wall of the hopper, and at least part of the sealing assembly is rotatably disposed on the periphery of the sampling port to seal the sampling port. At least a portion of the sampling component is inserted into and located within a portion of the sealing component. The sampling end of the sampling component is rotatably connected to a sampling shovel. The sampling component is configured to drive the sampling shovel through the sealing component in a first direction when the sampling port is open, embed it into the hopper via the sampling port, and sample the tobacco shreds in the hopper.

2. The tobacco shred sampling device according to claim 1, characterized in that, The sealing assembly includes a sealing valve and a sealing sleeve. The sealing valve is rotatably disposed on the periphery of the sampling port to seal the sampling port. The sealing sleeve is connected to the side of the sealing valve away from the sampling port. At least a portion of the sampling assembly passes through and is located in the sealing sleeve. The sampling assembly is configured to drive the sampling shovel through the sealing sleeve and into the hopper along the first direction when the sampling port is open.

3. The tobacco shred sampling device according to claim 2, characterized in that, The sealing sleeve is a hollow cylindrical component, and the sealing valve includes a valve seat and a valve body rotatably connected to the valve seat. The valve seat is disposed on the periphery of the sampling port, and the valve body seals the sampling port. The valve body and the sealing sleeve are coaxially arranged along the first direction.

4. The tobacco shred sampling device according to claim 2, characterized in that, The sampling assembly also includes a robotic arm, and the sampling shovel is rotatably connected to the sampling end of the robotic arm, and the robotic arm drives the sampling shovel to move.

5. The tobacco sampling device according to any one of claims 1-4, characterized in that, The hopper includes at least one layer of tobacco shreds along the second direction. A pressure sensor is provided on the sampling shovel, and the pressure sensor is configured to monitor the shovel insertion resistance in real time during the process of the sampling shovel embedding into the tobacco shreds layer. When the reading of the pressure sensor is less than a preset value, the sampling shovel continues to move downward; when the reading of the pressure sensor is greater than or equal to the preset value, the sampling shovel stops moving downward and closes to clamp the sample.

6. The tobacco shred sampling device according to claim 5, characterized in that, The hopper contains at least deep tobacco, middle tobacco and shallow tobacco along the second direction, and a position sensor is provided in the hopper; The tobacco sampling device also includes a controller, which is electrically connected to the pressure sensor, the sampling shovel, and the position sensor respectively. The position sensor is configured to acquire the position of the tobacco layer in the hopper and send a signal to the controller. The controller is configured to receive the signal and control the sampling shovel to sample at least one of the deep tobacco layer, the middle tobacco layer, and the shallow tobacco layer.

7. The tobacco sampling device according to any one of claims 2-4, characterized in that, It also includes unloading channels and unloading boxes; The sealing valve has a bottom outlet on its side, one end of the unloading channel is connected to the bottom outlet, and the other end of the unloading channel away from the sealing valve is connected to the unloading box. After the sampling component has taken a sample, the sampling shovel is configured to retract and communicate with the unloading channel to transport the sample to the unloading box through the unloading channel.

8. The tobacco shred sampling device according to claim 7, characterized in that, A baffle is provided at one end of the unloading channel near the bottom outlet, and the baffle is used to seal between the bottom outlet and the unloading channel; After the sampling component has taken a sample, the sampling shovel is configured to retract to trigger the baffle to open, and the bottom discharge port and the unloading channel are connected.

9. The tobacco shred sampling device according to claim 4, characterized in that, It also includes a cleaning component, which is rotatably mounted on the robotic arm and configured to clean the sampling shovel after sampling.

10. The tobacco shred sampling device according to claim 9, characterized in that, The cleaning assembly includes a linkage and a brush, the linkage being rotatably mounted on the robotic arm, and the brush being located at the end of the linkage away from the robotic arm.

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