Tobacco mildew odor collecting device and tobacco mildew odor detection equipment

Abstract

The utility model belongs to tobacco quality detection technical field discloses a kind of tobacco mildew smell collection device and tobacco mildew smell detection equipment.Tobacco mildew smell collection device includes collection mechanism and homogenizing mechanism.Collection mechanism includes the collection head, connecting shell and air inlet head connected in turn, and filter element is provided on air inlet head.Homogenizing mechanism includes gas pipeline, throttle valve and homogenizing chamber, gas pipeline is arranged in collection head, one end of gas pipeline is connected with air inlet head, and the other end of gas pipeline is connected with homogenizing chamber.Collection mechanism further includes connector, connector is located at the end of collection head away from connecting shell, and the end of homogenizing chamber away from gas pipeline is connected with connector.Homogenizing chamber can make the gas collected fully mixed evenly, avoid the problem that the inaccuracy of detection caused by local gas concentration difference, ensure the accuracy of detection result.

Description

Technical Field

[0001] This utility model relates to the field of tobacco leaf quality testing technology, and in particular to a tobacco leaf moldy odor collection device and a tobacco leaf moldy odor detection equipment. Background Technology

[0002] Tobacco leaves are the basic raw material for the tobacco industry, which occupies an important position in the global economy. The quality of tobacco leaves directly affects the quality, taste, and safety of tobacco products. Tobacco leaves are susceptible to mold growth during storage, leading to spoilage. Mold growth produces mycotoxins (such as aflatoxin and ochratoxin), posing a potential threat to smokers' health and damaging the leaf's structure, deteriorating its physical properties (such as increased brittleness and reduced toughness).

[0003] To achieve rapid and non-destructive detection of tobacco leaf mold, electronic nose systems based on gas sensing technology have been widely researched and applied in recent years. These systems mimic the olfactory system of mammals, using an array of gas sensors to respond to the overall information of volatile organic compounds (VOCs) released from tobacco leaves. Pattern recognition algorithms then analyze the odor information to identify moldy tobacco leaves. However, tobacco mold growth is a non-uniform process, typically starting in localized areas of the tobacco bale (such as corners with higher humidity and temperature), resulting in highly uneven distribution and significant local concentration differences within the tobacco storage space, leading to inaccurate detection results.

[0004] Therefore, there is an urgent need for a device for collecting and detecting the moldy odor of tobacco leaves to solve the above problems. Utility Model Content

[0005] The first objective of this invention is to provide a device for collecting the odor of moldy tobacco leaves, in order to solve the problem of inaccurate detection results in the prior art.

[0006] The second objective of this invention is to provide a device for detecting the odor of moldy tobacco leaves, so as to improve the accuracy of detecting the odor of moldy tobacco leaves.

[0007] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0008] A device for detecting musty odors in tobacco leaves, comprising:

[0009] A data collection mechanism, comprising a data collection head, a connecting housing, and an air inlet head connected in sequence; the air inlet head is provided with a filter element.

[0010] The homogenization mechanism includes a gas pipeline, a throttle valve, and a homogenization chamber. The gas pipeline is disposed inside the sampling head, and the throttle valve is disposed on the gas pipeline and protrudes from the sampling head. One end of the gas pipeline is connected to the air inlet head, and the other end of the gas pipeline is connected to the homogenization chamber.

[0011] The acquisition mechanism also includes a connector, which is located at the end of the acquisition head away from the connecting housing, and the end of the homogenization chamber away from the gas pipeline is connected to the connector.

[0012] Furthermore, the air inlet head has multiple air inlets at one end away from the connecting housing, and the filter element is located between the air inlet of the air inlet head and one end of the gas pipe.

[0013] Furthermore, the filter element is a filter screen, and the filter element has multiple filter holes evenly spaced on it.

[0014] Furthermore, the homogenization mechanism also includes a propeller, which is installed inside the gas pipeline and has multiple helical blades.

[0015] Furthermore, the homogenization mechanism also includes multiple guide plates located within the homogenization chamber.

[0016] Furthermore, the sampling head is detachably connected to the connecting housing, and the connecting housing is detachably connected to the air inlet head.

[0017] Furthermore, the homogenization chamber is cylindrical.

[0018] Furthermore, the acquisition mechanism also includes a flange, which is fixed to the end of the connector away from the acquisition head.

[0019] Furthermore, the homogenization mechanism also includes a sealing ring, which is installed between the flange and the connector.

[0020] The tobacco leaf moldy odor detection equipment includes a detection device and the aforementioned tobacco leaf moldy odor collection device.

[0021] The beneficial effects of this utility model are:

[0022] This invention provides a device for collecting the musty odor of tobacco leaves, including a collection mechanism and a homogenization mechanism. The collection mechanism includes a collection head, a connecting housing, and an air inlet head connected in sequence, with a filter element installed on the air inlet head. The homogenization mechanism includes a gas pipe, a throttle valve, and a homogenization chamber. The gas pipe is located inside the collection head, and the throttle valve is located on the gas pipe and protrudes from it. One end of the gas pipe is connected to the air inlet head, and the other end is connected to the homogenization chamber. The collection mechanism also includes a connector located at the end of the collection head furthest from the connecting housing, and the end of the homogenization chamber furthest from the gas pipe is connected to the connector. When collecting the musty odor of tobacco leaves, the filter element effectively filters the collected gas, removing dust, impurities, and other foreign matter, ensuring the purity of the gas entering the gas collection head and avoiding interference from impurities with the detection results. The homogenization chamber ensures that the collected gas is thoroughly and evenly mixed, avoiding inaccurate detection due to local gas concentration differences and guaranteeing the accuracy of the detection results.

[0023] This utility model also provides a tobacco leaf mold odor detection device, including a detection device and a tobacco leaf mold odor collection device as described above, to improve the accuracy of the detection results. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the tobacco moldy odor collection device provided in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the tobacco moldy odor collection device provided in this embodiment of the utility model from another perspective;

[0027] Figure 3 This is an exploded view of the homogenization mechanism provided in this embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the homogenization chamber provided in an embodiment of the present invention.

[0029] In the picture:

[0030] 1. Acquisition mechanism; 101. Acquisition head; 102. Connecting housing; 103. Air inlet; 104. Filter element; 105. Chamfer; 106. Connector; 107. Flange; 108. Bolt; 2. Homogenization mechanism; 201. Gas pipeline; 202. Throttling valve; 203. Homogenization chamber; 204. Propeller; 205. Propeller blade; 206. Guide plate; 207. Sealing ring. Detailed Implementation

[0031] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0037] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] This embodiment provides a device for collecting the odor of moldy tobacco leaves, which can fully mix the collected gases evenly, avoiding the problem of inaccurate detection caused by local gas concentration differences and ensuring the accuracy of the detection results.

[0039] In this embodiment, as Figures 1-4 As shown, the tobacco mold odor collection device includes a collection mechanism 1 and a homogenization mechanism 2. The collection mechanism 1 includes a collection head 101, a connecting housing 102, and an air inlet 103 connected in sequence. A filter element 104 is installed on the air inlet 103. The homogenization mechanism 2 includes a gas pipe 201, a throttle valve 202, and a homogenization chamber 203. The gas pipe 201 is disposed inside the collection head 101, and the throttle valve 202 is disposed on the gas pipe 201 and protrudes from the collection head 101. One end of the gas pipe 201 is connected to the air inlet 103, and the other end of the gas pipe 201 is connected to the homogenization chamber 203. The collection mechanism 1 also includes a connector 106, located at the end of the collection head 101 away from the connecting housing 102. The end of the homogenization chamber 203 away from the gas pipe 201 is connected to the connector 106. Understandably, when collecting the odor of moldy tobacco leaves, the filter element 104 can effectively filter the collected gas, removing dust, impurities and other foreign objects, ensuring the purity of the gas entering the collection head 101, avoiding interference from impurities on the detection results, and the homogenization chamber 203 can fully mix the collected gas evenly, avoiding the problem of inaccurate detection caused by local gas concentration differences, and ensuring the accuracy of the detection results.

[0040] Further, one can think of, such as Figure 2As shown, the connector 106 is located at the end of the collecting head 101 away from the connecting housing 102, and is used to connect with the matching detection device so that the processed gas can enter the detection device for detection. By setting the filter element 104, dust, impurities and other foreign objects are prevented from entering the collecting head 101, and thus from entering the gas pipeline 201 and the detection device, thereby avoiding blockage of the gas pipeline 201 or covering of the detection device, which would affect the accurate perception of the musty smell of tobacco leaves by the detection device, thus improving the detection accuracy.

[0041] In this embodiment, the air inlet 103 is positioned to selectively collect gas from the area surrounding the tobacco leaves. It can be placed near locations where moldy tobacco leaves may be present, such as the bottom of a tobacco pile or a corner of a warehouse, to more effectively capture gas containing a moldy odor. This targeted design improves detection accuracy because these locations are often where mold is most likely to occur and where the odor is strongest, ensuring that the collected gas accurately reflects the mold condition of the tobacco leaves.

[0042] Furthermore, it is conceivable that by placing the air inlet 103 in different locations, or in other words, by placing the entire tobacco mold odor collection device in different locations, the collected gas may have different compositions due to different degrees of mold. After mixing and homogenization, these differences are eliminated, making the detection results more reflective of the overall mold situation and further ensuring the reliability of the detection.

[0043] Furthermore, the side of the air inlet head 103 away from the connecting housing 102 can be circular or square, and its size can be determined according to actual usage requirements. For example, in cases where high-sensitivity detection is required and a larger gas flow rate is allowed, the air inlet head 103 can be designed to be larger to ensure sufficient gas enters the sampling head 101. The sides of the air inlet head 103 are typically chamfered 105 to avoid scratching surrounding objects and reduce turbulence when gas enters.

[0044] In this embodiment, as Figures 1-2 As shown, a throttle valve 202 is installed on the gas pipeline 201 and protrudes from the sampling head 101. The throttle valve 202 ensures a stable gas flow rate entering the detection device. A stable gas flow rate helps improve the repeatability and accuracy of the detection. For example, when the detection device has specific requirements for the gas flow rate, adjusting the opening of the throttle valve 202 ensures that the gas enters the detection device at the same flow rate each time, allowing the detection device to analyze the gas under stable operating conditions and avoiding detection errors caused by changes in flow rate. Furthermore, the throttle valve 202 protrudes from the sampling head 101, facilitating user operation. This embodiment does not specifically limit the type of throttle valve 202; any type that meets the usage requirements is acceptable.

[0045] Furthermore, to facilitate the assembly and cleaning of the tobacco mold odor collection device, in this embodiment, the collection head 101 can be detachably connected to the connecting housing 102, and the connecting housing 102 can be detachably connected to the air inlet head 103. For the specific detachable connection method, snap-fit, threaded, or other connection methods can be used; this embodiment does not impose specific limitations on this.

[0046] Furthermore, the end of the air inlet head 103 furthest from the connecting housing 102 has multiple air inlets, and the filter element 104 is located between the air inlet of the air inlet head 103 and one end of the gas pipe 201. By installing the filter element 104 between the air inlet of the air inlet head 103 and one end of the gas pipe 201, the gas is filtered before entering the gas pipe 201, ensuring the purity of the gas entering the tobacco moldy odor collection device.

[0047] In this embodiment, the filter element 104 can be a filter screen, with multiple filter holes evenly spaced on it. By using a filter screen, large particulate pollutants, such as hair, lint, dust, dander, pollen, insects, and other visible or large particles, can be effectively intercepted. In this embodiment, the filter screen can be made of stainless steel and is detachably connected to the air inlet head 103 for easy regular cleaning and replacement to ensure filtration effectiveness.

[0048] To further improve the gas filtration effect, in this embodiment, a microporous filter membrane is also provided at the end of the filter element 104 away from the air inlet. The pore size of the microporous filter membrane is generally between 0.2μm and 1μm, which can effectively filter tiny dust particles to improve the gas filtration effect. The microporous filter membrane can also be detachably installed inside the air inlet head 103.

[0049] Furthermore, when detecting the musty odor of tobacco leaves, the air inlet 103 of the sampling head 101 utilizes the diffusion properties of gases to collect gases from the surrounding air. According to Fick's Law, gas molecules diffuse from areas with high concentrations, such as the air around the tobacco storage area where the musty odor is present, to areas with low concentrations inside the sampling head 101. The position and size of the air inlet 103 determine the range and speed of air intake. Near the air inlet 103, due to natural airflow such as breezes or convection, or through auxiliary ventilation equipment, air carrying the musty odor of tobacco leaves is guided to the air inlet, effectively collecting gases from specific locations.

[0050] Furthermore, such as Figure 3As shown, the homogenization mechanism 2 also includes a propeller 204, which is installed inside the gas pipe 201. Multiple helical blades 205 are mounted on the propeller 204. Specifically, the multiple helical blades 205 are evenly spaced on the propeller 204. It can be understood that the multiple helical blades 205 act as a mixing component. When gas flows through the gas pipe 201, according to the principle of fluid flow in a rotating pipe, the gas is guided by the helical blades 205 and generates rotational motion. This rotational motion causes gas molecules at different positions to collide and mix, thereby increasing the degree of gas mixing.

[0051] In this embodiment, the gas conduit 201 is made of a chemically stable material that does not readily react with the gas being detected, such as polytetrafluoroethylene (PTFE) or stainless steel. PTFE has excellent corrosion resistance, low adsorption, and good smoothness, ensuring smooth gas flow within the gas conduit 201 without adsorbing or releasing substances that may interfere with detection. Stainless steel, on the other hand, has high strength and durability, making it suitable for use in more complex environments.

[0052] Furthermore, it can be conceivable that when gas flows in gas pipe 201, such as a polytetrafluoroethylene (PTFE) pipe or a stainless steel pipe, according to Bernoulli's equation and the continuity equation in fluid mechanics, the gas flows at a relatively stable velocity within the pipe when the cross-sectional area remains constant and the height does not change significantly. Due to the chemical stability and low adsorption of the pipe material, such as PTFE, gas molecules will not be adsorbed or chemically react with the material of gas pipe 201, thus enabling them to be smoothly transported to the subsequent detection device.

[0053] Regarding the specific shape of the gas pipe 201, it can be a circular or square pipe, with an inner diameter between 4 and 12 mm. The advantage of a circular pipe is that it has low fluid resistance, allowing for smoother gas flow; while a square pipe may be easier to integrate with other components in some special installation layouts.

[0054] Furthermore, such as Figure 4As shown, the homogenization mechanism 2 also includes multiple guide plates 206 located within the homogenization chamber 203. It can be understood that by setting the guide plates 206, the gas flow within the homogenization chamber 203 can be guided, allowing the gas to form a stable flow pattern within the chamber. The flow direction and velocity distribution of the gas within the homogenization chamber 203 are more uniform. According to the time scale principle of fluid mixing, the gas remains in the homogenization chamber 203 for a sufficiently long time, allowing gas molecules to fully collide and mix. For example, gas entering from different positions within the homogenization chamber 203, after circulating and diffusing within the chamber, eventually reaches a state of uniform composition, ensuring that the gas sample delivered to the detection device accurately reflects the true state of the musty odor of tobacco leaves. In this embodiment, the homogenization chamber 203 can be cylindrical, spherical, or cuboid, and the guide plates 206 can be rectangular. The specific shapes of the homogenization chamber 203 and the guide plate 206 can be determined according to actual usage requirements, and this embodiment does not impose specific limitations.

[0055] Furthermore, such as Figure 2 As shown, the data acquisition mechanism 1 also includes a flange 107, which secures the end of the connector 106 away from the data acquisition head 101. It is understood that by providing the flange 107, the connector 106 is easily connected to the detection device, and the connection strength and sealing performance are high. In this embodiment, the flange 107 can be used with bolts 108 to connect to the detection device. Of course, in other embodiments, threaded connections or quick-connect connections are used to connect the connector 106 to the detection device. Threaded connections are simple to operate and convenient for installation and disassembly. Quick-connect connections are very practical when frequent replacement of the data acquisition head 101 or the detection device is required. This variety of connection methods improves the versatility and convenience of the data acquisition mechanism 1.

[0056] To further improve the sealing performance at the connection between flange 107 and connector 106, in this embodiment, the homogenization mechanism 2 also includes a sealing ring 207, which is installed between flange 107 and connector 106. It is understood that during connection, the sealing ring 207 is compressed between connector 106 and flange 107, forming a tight seal to ensure that gas can only enter the detection device through sampling head 101. In this embodiment, the sealing ring 207 is made of silicone rubber or fluororubber, which has good elasticity and corrosion resistance to further improve the sealing effect. Of course, in other embodiments, existing gaskets can also be used to seal the connection between flange 107 and connector 106. The gasket can be a polytetrafluoroethylene gasket or a metal gasket; the specific type can be selected according to different pressure and temperature requirements, and this embodiment does not impose specific limitations.

[0057] This embodiment also provides a tobacco leaf mold odor detection device, including a detection device and the above-mentioned tobacco leaf mold odor collection device, so as to improve the accuracy of detecting tobacco leaf mold odor.

[0058] In this embodiment, the air inlet of the detection device is connected to and communicates with the connector 106 of the collection mechanism 1 to ensure the effectiveness and connectivity of the connection between the detection device and the tobacco mold odor collection device. In this embodiment, the detection device can be an electronic nose or other types of detection devices. The specific type of detection device can be determined according to actual usage requirements, and this embodiment does not impose any specific limitations on it.

[0059] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A device for collecting the musty odor of tobacco leaves, characterized in that, include: The collection mechanism (1) includes a collection head (101), a connecting housing (102), and an air inlet head (103) connected in sequence; a filter element (104) is provided on the air inlet head (103); The homogenization mechanism (2) includes a gas pipe (201), a throttle valve (202), and a homogenization chamber (203). The gas pipe (201) is disposed inside the sampling head (101). The throttle valve (202) is disposed on the gas pipe (201) and protrudes from the sampling head (101). One end of the gas pipe (201) is connected to the air inlet head (103), and the other end of the gas pipe (201) is connected to the homogenization chamber (203). The acquisition mechanism (1) further includes a connector (106), which is located at the end of the acquisition head (101) away from the connecting housing (102), and the end of the homogenization chamber (203) away from the gas pipe (201) is connected to the connector (106).

2. The tobacco leaf mold odor collection device according to claim 1, characterized in that, The air inlet head (103) has multiple air inlets at one end away from the connecting housing (102), and the filter element (104) is located between the air inlet of the air inlet head (103) and one end of the gas pipe (201).

3. The tobacco leaf mold odor collection device according to claim 2, characterized in that, The filter element (104) is a filter screen, and multiple filter holes are evenly spaced on the filter element (104).

4. The tobacco leaf mold odor collection device according to claim 1, characterized in that, The homogenization mechanism (2) further includes a propeller (204), which is installed inside the gas pipeline (201) and has multiple helical blades (205) mounted on it.

5. The tobacco leaf mold odor collection device according to claim 1, characterized in that, The homogenization mechanism (2) also includes a plurality of guide plates (206), which are located within the homogenization chamber (203).

6. The tobacco leaf mold odor collection device according to claim 1, characterized in that, The sampling head (101) is detachably connected to the connecting housing (102), and the connecting housing (102) is detachably connected to the air inlet head (103).

7. The tobacco leaf mold odor collection device according to claim 1, characterized in that, The homogenization chamber (203) is cylindrical.

8. The tobacco leaf mold odor collection device according to claim 1, characterized in that, The acquisition mechanism (1) also includes a flange (107), which is fixed to the end of the connector (106) away from the acquisition head (101).

9. The tobacco leaf mold odor collection device according to claim 8, characterized in that, The homogenizing mechanism (2) also includes a sealing ring (207), which is installed between the flange (107) and the connector (106).

10. A device for detecting moldy odor in tobacco leaves, characterized in that, It includes a detection device and a tobacco leaf mold odor collection device as described in any one of claims 1-9.

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