Tobacco shred conveying device for laboratory

Abstract

The invention discloses a tobacco shred conveying device for a laboratory, and the device comprises a conveying mechanism which is used for conveying tobacco shreds; the mounting frame is at least partially arranged above the conveying mechanism; and the disinfecting and drying mechanism is arranged on the mounting frame and located above the conveying mechanism, and the disinfecting and drying mechanism is used for disinfecting and drying the tobacco shreds on the conveying mechanism. The tobacco shreds can be disinfected and dried while being conveyed, and the preservation time of the tobacco shreds is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco experimental equipment, in particular to a tobacco shred conveying device used in a laboratory. Background Art

[0002] Cigarette formula is the core technology of cigarette companies. Scientific cigarette formula is the "driving force" for the development of enterprises. Cigarette formula development requires a large number of small sample ingredient tests to screen out good formulas.

[0003] When researching cigarette formulations, tobacco samples are necessary. Currently, in tobacco laboratories, this process involves feeding tobacco leaves to a small laboratory tobacco cutter, which then cuts the leaves into shredded tobacco. The cut tobacco is then stored in sealed plastic bags or boxes. However, this method of storing tobacco samples directly after cutting causes them to mold or deteriorate over time, resulting in significant tobacco waste. Summary of the Invention

[0004] The present invention aims to address the problem of tobacco samples being easily moldy or deteriorating, resulting in tobacco waste, as is commonly encountered in existing techniques. The present invention provides a tobacco conveying device for use in laboratories that simultaneously sterilizes and dries tobacco while conveying it, thereby preventing mold and deterioration and extending the shelf life of tobacco samples.

[0005] To solve the above technical problems, an embodiment of the present invention provides a tobacco conveying device for a laboratory, comprising:

[0006] A conveying mechanism for conveying tobacco;

[0007] a mounting frame, at least partially disposed above the conveying mechanism;

[0008] The disinfection and drying mechanism is arranged on the mounting frame and located above the conveying mechanism. The disinfection and drying mechanism is used for disinfecting and drying the tobacco on the conveying mechanism.

[0009] According to another specific embodiment of the present invention, the disinfection and drying mechanism includes: a disinfection lamp and a heating tube, and the disinfection lamp and the heating tube extend along the width direction of the conveying mechanism.

[0010] According to another specific embodiment of the present invention, the mounting frame includes a vertical plate, which is connected to the outer wall of the conveying mechanism. A fixed block is provided on the vertical plate. The disinfection lamp and the heating tube are located above the conveying mechanism, and one end of the disinfection lamp and the heating tube is fixed on the fixed block.

[0011] According to another specific embodiment of the present invention, it also includes an air-jet mechanism, which includes:

[0012] An air pump is provided on the upper surface of the fixed block;

[0013] An air injection pipe extends along the width direction of the conveying mechanism. One end of the air injection pipe is connected to the output end of the air pump. A plurality of air injection holes are provided on the air injection pipe, and the height of the air injection pipe is greater than the height of the heating pipe.

[0014] According to another specific embodiment of the present invention, the air injection holes are provided on the outer side wall of the air injection pipe and face away from the conveying mechanism.

[0015] According to another specific embodiment of the present invention, the air injection pipe is located above the heating pipe.

[0016] According to another specific embodiment of the present invention, the mounting bracket further includes a horizontal plate. The upper end of the vertical plate is connected to the end of the horizontal plate, and the horizontal plate is horizontally arranged above the disinfection and drying mechanism; a plurality of reflecting prisms are provided on the lower surface of the horizontal plate, and the plurality of reflecting prisms are arranged in a linear array along the conveying direction of the conveying mechanism. The reflecting prisms are used to reflect the light emitted by the disinfection lamp.

[0017] According to another specific embodiment of the present invention, the conveying mechanism is a belt conveyor, and the belt conveyor includes a conveyor belt. A plurality of baffles are provided on the conveyor belt at intervals along the conveying direction of the conveyor belt, and each baffle extends along the width direction of the conveyor belt.

[0018] According to another specific embodiment of the present invention, a collecting plate is provided below the conveying mechanism, and the collecting plate is inclined with respect to the conveying direction of the conveying mechanism; the distance between the collecting plate and the lower surface of the conveyor belt gradually increases from the discharge end to the feed end of the conveying mechanism.

[0019] According to another specific embodiment of the present invention, the inclination angle of the collecting plate with respect to the conveying direction of the conveying mechanism is 30°.

[0020] According to another specific embodiment of the present invention, a stress rod extending vertically is provided on the collecting plate. The lower end of the stress rod is fixedly connected to the collecting plate, and the upper end of the stress rod is lower than the lower surface of the conveyor belt and higher than the lower edge of the baffle provided on the lower surface of the conveyor belt.

[0021] According to another specific embodiment of the present invention, the distance between the upper end of the stress rod and the lower surface of the conveyor belt is 0.5 - 1 mm.

[0022] According to another specific embodiment of the present invention, the distance between the disinfection lamp and / or the heating pipe and the upper surface of the conveyor belt is 20 - 25 cm.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the laboratory, the cut tobacco is conveyed by a conveying mechanism, and a disinfection and drying mechanism is arranged above the conveying mechanism. While the conveying mechanism conveys the tobacco, the tobacco can be disinfected and dried, thereby preventing the tobacco sample from mildewing or deteriorating and prolonging the storage time of the tobacco sample. Brief Description of the Drawings

[0025] Figure 1 Schematic perspective view of a tobacco conveying device for a laboratory provided by an embodiment of the present invention Figure 1 ;

[0026] Figure 2 Schematic perspective view of a tobacco conveying device for a laboratory provided by an embodiment of the present invention Figure 2 ;

[0027] Figure 3 Front view of a tobacco conveying device for a laboratory provided by an embodiment of the present invention;

[0028] Figure 4 Schematic perspective view of a jet mechanism provided by an embodiment of the present invention.

[0029] Explanation of the reference numerals in the drawings:

[0030] 1. Conveying mechanism, 11. Conveying frame, 12. Driving unit, 13. Driving roller, 14. Driven roller, 15. Conveyor belt, 151. Baffle, 152. Upper surface, 153. Lower surface, 2. Mounting frame, 21. Vertical plate, 22. Horizontal plate, 23. Fixed block, 3. Disinfection and drying mechanism, 31. Disinfection lamp, 32. Heating pipe, 4. Jet mechanism, 41. Air pump, 42. Jet pipe, 43. Jet hole, 5. Reflective prism, 6. Collection plate, 61. Discharge end, 62. Collection end, 7. Force-bearing rod. Detailed Description of the Embodiment

[0031] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with preferred embodiments, this does not mean that the features of this invention are limited to this implementation manner. On the contrary, the purpose of introducing the invention in conjunction with the implementation manner is to cover other alternatives or modifications that may be extended based on the claims of the present invention. To provide a deep understanding of the present invention, many specific details will be included in the following description. The present invention can also be implemented without these details. In addition, in order to avoid confusing or obscuring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0032] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] The terms "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0035] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the drawings.

[0037] As Figures 1 to 3 shown, Figure 1 and Figure 2 are respectively a three-dimensional structural schematic diagram of a tobacco shred conveying device for a laboratory provided by an embodiment of the present invention and a three-dimensional structural schematic diagram of the conveying frame 11 with the conveying mechanism 1 removed on one side of the tobacco shred conveying device. Figure 3 is a front view of the conveying frame 11 with the conveying mechanism 1 removed on one side of the tobacco shred conveying device provided by an embodiment of the present invention. In this embodiment, the tobacco shred conveying device for a laboratory includes:

[0038] A conveying mechanism 1 for conveying tobacco shreds;

[0039] A mounting frame 2, at least partially disposed above the conveying mechanism 1;

[0040] A disinfection and drying mechanism 3, disposed on the mounting frame 2 and above the conveying mechanism 1, and the disinfection and drying mechanism 3 is used for disinfecting and drying the tobacco shreds on the conveying mechanism 1.

[0041] With this technical solution, in the laboratory, the cut tobacco is conveyed by the conveying mechanism 1, and a disinfection and drying mechanism 3 is arranged above the conveying mechanism 1. While the conveying mechanism 1 conveys the tobacco, the tobacco can be disinfected and dried, thereby preventing the tobacco sample from mildewing or deteriorating and extending the storage time of the tobacco sample. In addition, in this application, while the conveying mechanism 1 conveys the tobacco, the tobacco conveyed on the conveying mechanism 1 is disinfected and dried, which can improve work efficiency.

[0042] Specifically, in this embodiment, the conveying mechanism 1 is a belt conveyor. The conveying mechanism 1 includes a conveying frame 11, a driving unit 12, a driving roller 13, a driven roller 14, and a conveyor belt 15. The driving roller 13 and the driven roller 14 are respectively rotatably arranged at both ends of the conveying frame 11, and the conveyor belt 15 is sleeved outside the driving roller 13 and the driven roller 14 for supporting and conveying materials. The driving unit 12 is a motor arranged on the conveying frame 11, and the output end of the driving unit 12 is connected to the driving roller 13. By driving the driving roller 13 to rotate through the driving unit 12, the driving roller 13 drives the conveyor belt 15 to move through friction, so as to convey the materials placed on the conveyor belt 15 in the conveying direction of the conveyor belt 15 (such as Figure 1 shown by the x direction in the figure). Optionally, the tobacco can be conveyed to a designated position by using the conveying mechanism 1.

[0043] In this embodiment, the side where the driving roller 13 is located is the feeding end of the conveying mechanism 1, and the side where the driven roller 14 is located is the discharging end of the conveying mechanism 1. The disinfection and drying mechanism 3 is arranged near the discharging end of the conveying mechanism 1. In this way, the drying time of the tobacco can be reduced, and the tobacco can be prevented from becoming too dry and brittle.

[0044] Further, in this embodiment, the disinfection and drying mechanism 3 includes: a disinfection lamp 31 and a heating pipe 32. Specifically, the heating pipe 32 can emit heat to increase the ambient temperature around it, thereby drying the tobacco passing through the heating pipe 32 and reducing the moisture in the tobacco. The disinfection lamp 31 can emit ultraviolet rays, and the ultraviolet rays irradiate the tobacco, thereby disinfecting and sterilizing the tobacco and further reducing the bacterial residue in the tobacco. The disinfection lamp 31 and the heating pipe 32 extend along the width direction of the conveying mechanism 1 (such as Figure 1 shown by the y direction in the figure). By arranging the disinfection lamp 31 and the heating pipe 32 along the width direction of the conveying mechanism 1, the acting area of the disinfection lamp 31 and the heating pipe 32 on the tobacco can be increased.

[0045] Specifically, along the conveying direction of the conveyor belt 15, the disinfection lamp 31 and the heating pipe 32 are arranged side by side above the conveyor belt 15, and the disinfection lamp 31 is located on the upstream side of the heating pipe 32.

[0046] Optionally, the distance between the disinfection lamp 31 and the heating tube 32 and the upper surface 152 of the conveyor belt 15 is 20 to 25 cm. In this way, the best disinfection and drying effect can be achieved.

[0047] Furthermore, the mounting frame 2 includes a vertical plate 21, which is connected to the outer wall of the conveying mechanism 1. A fixed block 23 is provided on the vertical plate 21. The disinfection lamp 31 and the heating tube 32 are located above the conveying mechanism 1, and one end of the disinfection lamp 31 and the heating tube 32 are fixed on the fixed block 23.

[0048] Specifically, the vertical plate 21 is vertically mounted on the outer side wall of the conveyor frame 11 of the conveyor mechanism 1 and is fixed to the conveyor frame 11 by tightening screws. The fixing block 23 is a rectangular parallelepiped structure, and one end of the disinfection lamp 31 and the heating tube 32 are fixed to a side surface of the fixing block 23.

[0049] Furthermore, in this embodiment, an air jet mechanism 4 is also included, such as Figure 4 As shown, the jet mechanism 4 includes:

[0050] An air pump 41 is provided on the upper surface of the fixed block 23;

[0051] The jet pipe 42 extends along the width direction of the conveying mechanism 1 . One end of the jet pipe 42 is connected to the output end of the air pump 41 . The jet pipe 42 is provided with a plurality of jet holes 43 . The height of the jet pipe 42 is greater than that of the heating pipe 32 .

[0052] Specifically, the air jet pipe 42 is a cylindrical tubular structure with a plurality of air jet holes 43 formed on its outer wall. The air jet pipe 42 is positioned above the conveyor belt 15. Optionally, the distance between the air jet pipe 42 and the upper surface 152 of the conveyor belt 15 is 25 to 30 cm. One end of the air jet pipe 42 is connected to the output end of the air pump 41. When the air pump 41 is operating, the gas output by the air pump 41 is ejected from the air jet holes 43 through the air jet pipe 42, dispersing the hot air flow generated by the heating tube 32 when drying the shredded tobacco, thereby improving the drying effect of the shredded tobacco.

[0053] Furthermore, the air injection hole 43 is provided on the outer side wall of the air injection pipe 42 and is away from the conveying mechanism 1. That is, the air injection hole 43 is located on the outer side wall of the air injection pipe 42 facing upward.

[0054] With this technical solution, the moisture in the tobacco below the heating tube 32 is evaporated by the heating tube 32, forming a hot air flow. Since the hot air flows upward, the upward-facing air jet holes 43 of the air jet tube 42 can guide the hot air flow, accelerating its diffusion and improving the drying efficiency of the tobacco.

[0055] Furthermore, the air injection pipe 42 is located above the heating pipe 32 .

[0056] Preferably, the air injection pipe 42 is located obliquely above and downstream of the heating pipe 32. In this way, the drying efficiency of the cut tobacco can be improved.

[0057] Furthermore, the mounting bracket 2 further includes a horizontal plate 22. The upper end of the vertical plate 21 is connected to the end of the horizontal plate 22, and the horizontal plate 22 is horizontally arranged above the disinfection and drying mechanism 3. A plurality of reflecting prisms 5 are provided on the lower surface of the horizontal plate 22. The plurality of reflecting prisms 5 are arranged in a linear array along the conveying direction of the conveying mechanism 1, and the reflecting prisms 5 are used to reflect the light emitted by the disinfection lamp 31.

[0058] Adopting this technical solution, the reflecting prisms 5 are used to reflect the ultraviolet rays generated by the disinfection lamp 31, which can expand the area where the disinfection lamp 31 acts on the cut tobacco and improve the disinfection effect of the cut tobacco.

[0059] Optionally, the distance between the vertices of two adjacent reflecting prisms 5 is 50 mm.

[0060] Furthermore, a plurality of baffles 151 are provided on the conveyor belt 15 at intervals along the conveying direction of the conveyor belt 15, and each baffle 151 extends along the width direction of the conveyor belt 15.

[0061] Adopting this technical solution, a plurality of baffles 151 are arranged at intervals on the outer end surface of the conveyor belt 15. In this way, at the discharge end of the conveyor belt 15, when the conveyor belt 15 rotates from top to bottom on the driven roller 14, the baffle 151 can block the material, thereby controlling the position where the material falls, so that the material falls below the discharge end of the conveyor belt 15.

[0062] Optionally, in this embodiment, the baffle 151 is perpendicular to the surface of the conveyor belt 15, which is convenient for processing and manufacturing.

[0063] In this embodiment, the distance between each baffle 151 is 100 mm.

[0064] Furthermore, in an embodiment of this embodiment, a collecting plate 6 is provided below the conveying mechanism 1. The collecting plate 6 is inclined relative to the conveying direction of the conveying mechanism 1; the distance between the collecting plate 6 and the lower surface 153 of the conveyor belt 15 gradually increases from the discharge end to the feed end of the conveying mechanism 1.

[0065] Specifically, the collecting plate 6 is arranged below the conveyor belt 15 of the conveying mechanism 1. Adopting the above technical solution, the collecting plate 6 is inclined and arranged below the conveyor belt 15. The material falling from the discharge end of the conveying mechanism 1 falls onto the collecting plate 6 and converges towards the other end of the collecting plate 6 to facilitate the recovery of the cut tobacco.

[0066] In this embodiment, the blanking end 61 of the collection plate 6 at the discharge end of the conveying mechanism 1 is higher than the collection end 62 of the collection plate 6 at the feeding end of the conveying mechanism 1. In this way, the feeding end of the conveying mechanism 1 and the collection end 62 of the collection plate 6 are on the same side, facilitating the experimenter to pick up and place the cut tobacco.

[0067] Optionally, in this embodiment, the inclination angle of the collection plate 6 relative to the conveying direction of the conveying mechanism 1 is 30°.

[0068] Optionally, a cut tobacco collection box is provided below the collection end 62 of the collection plate 6. The collection box is located at the feeding end of the conveying mechanism 1 to facilitate the collection of the cut tobacco falling from the collection plate 6. The feeding end of the conveying mechanism 1 and the cut tobacco collection box are on the same side, facilitating the experimenter to put the cut tobacco into the cut tobacco conveying device and take out the disinfected and dried cut tobacco from the cut tobacco collection box.

[0069] In another embodiment of the present invention, a collection plate 6 is provided below the conveying mechanism 1, and the collection plate 6 is inclinedly arranged relative to the conveying direction of the conveying mechanism 1; the distance between the collection plate 6 and the lower surface 153 of the conveyor belt 15 gradually increases from the feeding end to the discharge end of the conveying mechanism 1. That is, the collection end 62 of the collection plate 6 is higher than the blanking end 61. During the operation of the conveyor belt 15, the cut tobacco adhered to the conveyor belt 15 falls on the collection plate 6 and converges towards the blanking end 61 of the collection plate 6, and the material is collected from the blanking end 61 of the collection plate 6 when collecting the material.

[0070] Further, a force-bearing rod 7 extending vertically is provided on the collection plate 6. The lower end of the force-bearing rod 7 is fixedly connected to the collection plate 6, and the upper end of the force-bearing rod 7 is lower than the lower surface 153 of the conveyor belt 15 and higher than the lower edge of the baffle 151 provided on the lower surface 153 of the conveyor belt 15.

[0071] With this technical solution, during the operation of the conveyor belt 15, when the baffle 151 under the driving roller 13 and the driven roller 14 comes into contact with the force-bearing rod 7 during operation, the force-bearing rod 7 interferes with the baffle 151. When the conveyor belt 15 continues to run forward, the baffle 151 needs to cross over the upper end of the force-bearing rod 7. Therefore, the baffle 151 will drive the conveyor belt 15 to be in a state of up and down vibration, thus facilitating the shaking off of the cut tobacco adhered to the conveyor belt 15.

[0072] Optionally, the upper end of the force-bearing rod 7 is arc-shaped, so that when the upper end of the force-bearing rod 7 comes into contact with the baffle 151, it is convenient for the baffle 151 to cross over the upper end of the force-bearing rod 7.

[0073] Optionally, the distance between the upper end of the force-bearing rod 7 and the lower surface 153 of the conveyor belt 15 is 0.5 to 1 mm. A certain gap is provided between the upper end of the force-bearing rod 7 and the lower surface 153 of the conveyor belt 15 to prevent the end of the force-bearing rod 7 from contacting the lower surface 153 of the conveyor belt 15 and damaging the conveyor belt 15.

[0074] According to the tobacco shred conveying device for a laboratory provided by the present invention, while the conveying mechanism conveys tobacco shreds, the tobacco shreds are disinfected and dried. It can not only convey the tobacco shreds to a designated position, but also prevent the tobacco shred samples from mildewing and extend the storage time of the tobacco shred samples.

[0075] Although the present invention has been illustrated and described by referring to some preferred embodiments of the present invention, those of ordinary skill in the art should understand that the above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A cut tobacco conveying device for a laboratory, characterized in that, Comprising: A conveying mechanism for conveying cut tobacco; A mounting rack, at least partially disposed above the conveying mechanism; A disinfection and drying mechanism, disposed on the mounting rack and above the conveying mechanism, the disinfection and drying mechanism being used for disinfecting and drying the cut tobacco on the conveying mechanism.

2. The tobacco conveying device according to claim 1, wherein, The disinfection and drying mechanism includes: a disinfection lamp and a heating pipe, the disinfection lamp and the heating pipe extending along the width direction of the conveying mechanism.

3. The tobacco cut filler conveying device according to claim 2, wherein The mounting rack includes a vertical plate, the vertical plate being connected to the outer sidewall of the conveying mechanism, a fixing block being provided on the vertical plate, the disinfection lamp and the heating pipe being located above the conveying mechanism, and one end of the disinfection lamp and the heating pipe being fixed to the fixing block.

4. The cut tobacco conveying device according to claim 3, characterized in that, It further includes a jetting mechanism, the jetting mechanism including: An air pump, disposed on the upper surface of the fixing block; A jetting pipe, extending along the width direction of the conveying mechanism, one end of the jetting pipe being connected to the output end of the air pump, a plurality of jet holes being provided on the jetting pipe, the height of the jetting pipe being greater than the height of the heating pipe.

5. The cut tobacco conveying device according to claim 4, characterized in that, The jet holes are provided on the outer sidewall of the jetting pipe and face away from the conveying mechanism.

6. The tobacco conveying device according to claim 5, wherein The jetting pipe is located above the heating pipe.

7. The tobacco strand conveying device according to claim 3, wherein The mounting rack further includes a horizontal plate, the upper end of the vertical plate being connected to the end of the horizontal plate, the horizontal plate being horizontally disposed above the disinfection and drying mechanism; a plurality of reflecting prisms are provided on the lower surface of the horizontal plate, the plurality of reflecting prisms being linearly arrayed along the conveying direction of the conveying mechanism, the reflecting prisms being used for reflecting the light emitted by the disinfection lamp.

8. The tobacco rod conveying device according to claim 2, wherein The conveying mechanism is a belt conveyor, the belt conveyor including a conveyor belt, a plurality of baffles being provided on the conveyor belt at intervals along the conveying direction of the conveyor belt, each of the baffles extending along the width direction of the conveyor belt.

9. The tobacco conveying device according to claim 8, wherein A collecting plate is provided below the conveying mechanism, the collecting plate being inclinedly disposed relative to the conveying direction of the conveying mechanism; the distance between the collecting plate and the lower surface of the conveyor belt gradually increases from the discharge end to the feed end of the conveying mechanism.

10. The tobacco strand conveying device according to claim 9, characterized in that, The inclination angle of the collecting plate relative to the conveying direction of the conveying mechanism is 30°.

11. The cut tobacco conveying device according to claim 9, characterized in that A stress rod extending vertically is provided on the collecting plate, the lower end of the stress rod being fixedly connected to the collecting plate, the upper end of the stress rod being lower than the lower surface of the conveyor belt and higher than the lower edge of the baffle provided on the lower surface of the conveyor belt.

12. The tobacco conveying device according to claim 11, characterized in that, The distance between the upper end of the stress rod and the lower surface of the conveyor belt is 0.5 - 1 mm.

13. The tobacco conveying device according to claim 8, wherein, The distance between the disinfection lamp and / or the heating pipe and the upper surface of the conveyor belt is 20 - 25 cm.

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