Sampling device for detecting leaf surface density of tobacco leaves
By designing a sampling device with a protective cover and spring linkage, the safety and accuracy issues during the ring cutter cutting of tobacco leaves were solved, achieving efficient and safe detection of tobacco leaf surface density.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-24
AI Technical Summary
In existing technologies, the ring cutter method for cutting tobacco leaves is cumbersome to operate, poses significant safety hazards, and has low cutting accuracy, which affects the efficiency and safety of tobacco leaf density detection.
A sampling device comprising a protective cover, a ring cutter, a pressure plate, and a spring was designed. The protective cover prevents the ring cutter from being exposed. The spring's reset function and the push rod linkage design enable automatic cutting of tobacco leaves and sample retention. The limit block controls the pressing stroke to ensure cutting accuracy.
It significantly improves operational safety, simplifies the sampling process, increases cutting efficiency and accuracy, reduces operational risks, and is suitable for testing the physical properties of tobacco leaves.
Smart Images
Figure CN224034950U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tobacco quality detection technical field especially, a kind of sampling device for detecting tobacco leaf surface density. BACKGROUND
[0002] The quality evaluation of raw tobacco (primary cured tobacco leaf) needs to comprehensively consider sensory evaluation quality, appearance quality, intrinsic chemical composition and physical properties and other multi-dimensional indexes. Among them, the determination of leaf surface density in physical properties requires 50 circular tobacco pieces with a diameter of 15 mm to be prepared for each sample, and the main veins and thicker branch veins need to be avoided. Finally, the total mass is weighed to calculate the leaf surface density. At present, the laboratory generally uses a hand-held ring cutter with an inner diameter of 15 mm for sampling operation: the operator needs to select an appropriate position on the flat tobacco surface and press the ring cutter to cut the tobacco. However, the existing technology has the following significant problems: first, the traditional ring cutter is a hollow structure, and the tobacco sample is easily pushed into the inside of the ring cutter during cutting, so a thin rod-shaped tool is needed to eject the sample, which is complicated and inefficient. Second, to improve cutting efficiency, a ring cutter with a sharp blade is usually used, which poses a safety hazard and can easily injure the operator if they are not careful. Third, during the cutting process, the tobacco is easily bent locally due to the pressure of the ring cutter, which increases the area error of the cut sample and affects the detection accuracy. The above problems seriously restrict the efficiency and safety of tobacco leaf surface density detection. The present application aims to provide an improved sampling device to solve the technical defects of operator skin damage risk and inconvenient cutting sample removal of traditional ring cutters. SUMMARY
[0003] The utility model aims at the shortage of prior art, develops a kind of sampling device for detecting tobacco leaf surface density, the utility model is improved safety by setting up protective cover to avoid ring cutter exposure, using the design of blocking of pressing plate and spring automatic rebound realizes tobacco sample fast cutting and reservation, significantly improves sampling efficiency and reduces operation risk.
[0004] The technical solution of the utility model to solve the technical problem is:
[0005] The application provides a sampling device for detecting tobacco leaf surface density, comprising a ring cutter, a base, a protective cover and a pressing body; the base is provided with an accommodating groove with an opening facing upward, a plurality of through holes are formed in the bottom surface of the accommodating groove, a connecting column is connected below the accommodating groove, and a pressing plate is connected to the bottom end of the connecting column; a spring is sleeved on the outer wall surface of the pressing body, the pressing body and the spring are inserted into the accommodating groove, the upper end of the spring is connected to the pressing body, and the lower end of the spring is connected to the inner bottom surface of the accommodating groove; the pressing body comprises a pressing block and a push rod matched with the through holes, the push rod is connected below the pressing block and extends to below the base through the through holes; the ring cutter is connected below the push rod, the protective cover is connected below the base, the pressing plate is located in the ring cutter, the protective cover is sleeved outside the ring cutter, and the pressing body drives the ring cutter to shuttle in the gap between the protective cover and the pressing plate to cut and sample tobacco leaves.
[0006] As an improvement of the above scheme, the bottom end of the push rod is fixedly connected with a ring cutter seat, and the ring cutter is fixedly connected to the bottom end of the ring cutter seat.
[0007] As an improvement of the above scheme, the lower end surfaces of the protective cover and the pressing plate are flush and are respectively provided with rubber sheets.
[0008] As an improvement of the above scheme, the pressing body is outwardly provided with a connecting ring matched with the accommodating groove, the upper end of the spring is fixedly connected to the connecting ring, and the lower end of the spring is connected to the inner bottom surface of the accommodating groove.
[0009] As an improvement of the above scheme, a limiting block is outwardly protrudingly arranged on the outer wall surface of the pressing body, and the outward protruding distance of the limiting block is greater than the distance between the inner side wall of the accommodating groove and the outer side wall of the pressing body, and the limiting block is located above the connecting ring.
[0010] As an improvement of the above scheme, the connecting column is connected to the center position of the bottom surface of the accommodating groove.
[0011] Compared with the prior art, the above scheme has the following advantages or beneficial effects:
[0012] 1. The safety is significantly improved; the protective cover is sleeved outside the ring cutter to avoid direct exposure of the blade, thereby effectively reducing the risk of scratches caused by accidental touching of the blade by the operator;
[0013] 2. The sampling efficiency is optimized; the reset performance of the spring is combined with the push rod to design the linkage, the ring cutter can automatically rebound into the protective cover after pressing, the cutting sample is blocked by the pressing plate and remains below the blade of the ring cutter, and the sample does not need to be pushed out by an additional tool, thereby simplifying the operation process;
[0014] 3. Cutting accuracy is improved: the lower end surface of the pressing plate and the protective cover is flush and rubber sheet is arranged, which ensures the flatness of the tobacco surface during cutting and reduces the sample area error caused by the bending of tobacco;
[0015] 4. The structural reliability is enhanced: the pressing stroke is controlled by the limiting block to avoid damage to the tobacco or device components caused by excessive pressing. In summary, the device improves the operation safety while considering the detection efficiency and accuracy, and can be widely applied in the field of tobacco physical property detection. BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application.
[0017] Figure 1 It is a structural schematic view of the sampling device for detecting tobacco leaf density of the present embodiment.
[0018] Figure 2 It is a structural schematic view of the base and push rod involved in the present embodiment.
[0019] In the figure, 1 is a base, 2 is a protective cover, 3 is a pressing block, 4 is a push rod, 5 is a ring cutter, 6 is a ring cutter seat, 7 is a containing groove, 8 is a through hole, 9 is a connecting column, 10 is a pressing plate, 11 is a spring, 12 is a connecting ring, and 13 is a limiting block. DETAILED DESCRIPTION
[0020] In order to clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation, and combined with its drawings. The following disclosure provides many different embodiments or examples to realize different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. In addition, the utility model can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The utility model omits the description of known components and processing techniques and processes to avoid unnecessary limitations on the utility model. The orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0021] Referring to Figure 1 And 2 , the embodiment provides a sampling device for detecting tobacco leaf surface density, which comprises a base 1, a pressing body and a ring cutter 5.
[0022] The base 1 is provided with a receiving groove 7 with an opening upward, and four through holes 8 are uniformly arranged on the bottom surface of the receiving groove 7. The bottom end of the connecting column 9 fixedly connected below the bottom surface of the receiving groove 7 is fixedly connected with the pressing plate 10 with a circular cross section.
[0023] The spring 11 is sleeved on the outer wall surface of the pressing body, and the pressing body is inserted into the receiving groove 7 together with the spring 11. The connecting ring 12 matched with the receiving groove 7 is outwardly protruding arranged on the pressing body. The upper end of the spring 11 is fixedly connected on the connecting ring 12, and the lower end is connected on the inner bottom surface of the receiving groove 7. When the pressing body is pressed downward, the connecting ring 12 moves downward with the pressing body, so as to compress the spring 11.
[0024] The pressing body comprises a pressing block 3 and four push rods 4 matched with the through hole 8, the push rods 4 are fixedly connected below the pressing block 3 and extend through the through hole 8 to below the base 1.
[0025] The bottom end of the push rod 4 is fixedly connected with a ring cutter seat 6, the ring cutter 5 is fixedly connected at the bottom end of the ring cutter seat 6, and the pressing plate 10 is located inside the ring cutter 5. The lower end of the base 1 is connected with a protective cover 2, the protective cover 2 is sleeved outside the ring cutter 5 to solve the safety hazard of the exposed blade of the ring cutter 5. The material of the protective cover 2 can be plastic, wood, metal and the like. The pressing body drives the ring cutter 5 to shuttle in the gap between the protective cover 2 and the pressing plate 10 for cutting and sampling tobacco leaves.
[0026] The lower end faces of the protective cover 2 and the pressing plate 10 are flush and are respectively provided with rubber sheets to increase the friction with the tobacco leaves.
[0027] A limiting block 13 is protrusively arranged on the outer wall surface of the pressing body, and the outward protruding distance thereof is greater than the distance between the inner wall of the accommodating groove 7 and the outer wall of the pressing body. The limiting block 13 is located above the connecting ring 12. The limiting block 13 controls the pressing stroke to avoid excessive pressing damage to the tobacco leaves or device components. When sampling tobacco leaves, the sampling device of the embodiment is placed on the tobacco leaves, so that the pressing plate 10 and the protective cover 2 are tightly attached to the tobacco leaves, the pressing body is pressed downward, the spring 11 is compressed, the ring cutter 5 moves downward and cuts the tobacco leaves, and when the pressing force disappears, the ring cutter 5 moves upward into the protective cover 2 under the action of the spring 11, and the cut tobacco leaf block cannot enter the inside of the ring cutter 5 under the blocking of the pressing plate 10.
[0028] In addition, during the sampling of the tobacco leaves, the pressing plate 10 is always tightly attached to the tobacco leaves, which on the one hand makes the tobacco leaves at the cutting position of the ring cutter 5 basically in a relatively flat state, facilitating the cutting of the tobacco leaves and effectively alleviating the problem that the surface of the tobacco leaf is bent due to the downward pressing of the ring cutter 5, thereby causing a large area error of the cut tobacco leaf block.
[0029] Although the specific embodiments of the utility model are described above in combination with the drawings, it is not a limitation on the protection scope of the utility model, and various modifications or changes made by those skilled in the art on the basis of the technical solutions of the utility model without creative labor are still within the protection scope of the utility model.
Claims
1. A sampling device for detecting the surface density of tobacco leaves, comprising a ring cutter (5), characterized in that: It also includes a base (1), a protective cover (2), and a pressing body; The base (1) has an upward-facing receiving groove (7), and the bottom surface of the receiving groove (7) has multiple through holes (8). A connecting post (9) is connected to the bottom of the receiving groove (7), and a pressure plate (10) is connected to the bottom end of the connecting post (9). A spring (11) is fitted on the outer wall of the press body. The press body, together with the spring (11), is inserted into the receiving groove (7). The upper end of the spring (11) is connected to the press body, and its lower end is connected to the inner bottom surface of the receiving groove (7). The pressing body includes a pressing block (3) and a push rod (4) adapted to the through hole (8), the push rod (4) being connected below the pressing block (3) and extending through the through hole (8) to below the base (1); The ring cutter (5) is connected below the push rod (4), the protective cover (2) is connected below the base (1), the pressure plate (10) is located inside the ring cutter (5), the protective cover (2) is sleeved on the outside of the ring cutter (5), and the pressing body drives the ring cutter (5) to shuttle through the gap between the protective cover (2) and the pressure plate (10) to cut the sample tobacco leaves.
2. The sampling device for detecting tobacco leaf surface density according to claim 1, characterized in that: The bottom end of the push rod (4) is fixedly connected to the ring cutter seat (6), and the ring cutter (5) is fixedly connected to the bottom end of the ring cutter seat (6).
3. A sampling device for detecting tobacco leaf surface density according to claim 1, characterized in that: The lower end faces of the protective cover (2) and the pressure plate (10) are flush, and each is provided with a rubber sheet.
4. A sampling device for detecting tobacco leaf surface density according to claim 1, characterized in that: The pressing body has a connecting ring (12) that is adapted to the receiving groove (7) protruding outward. The upper end of the spring (11) is fixedly connected to the connecting ring (12), and its lower end is connected to the inner bottom surface of the receiving groove (7).
5. A sampling device for detecting tobacco leaf surface density according to claim 4, characterized in that: A limiting block (13) is provided protruding from the outer wall of the press body, and the distance of its outward protrusion is greater than the distance between the inner wall of the receiving groove (7) and the outer wall of the press body. The limiting block (13) is located above the connecting ring (12).
6. A sampling device for detecting tobacco leaf surface density according to claim 1, characterized in that: The connecting column (9) is connected to the center of the bottom surface of the receiving groove (7).