A leaf threshing and redrying material throwing air knife and air separating machine

Abstract

The utility model relates to a threshing and redrying technology field, specifically disclose a kind of threshing and redrying material throwing air knife and air distributor, the threshing and redrying material throwing air knife includes air knife body, air inlet pipe, guide plate and adjusting assembly, air knife body is provided with air cavity, and the air port that is communicated with air cavity, air knife body includes the first plate and second plate of interval arrangement, air port is formed between the first plate and second plate;Air inlet pipe is set to air knife body and is communicated with air cavity;Guide plate is fixedly connected with air knife body, and along the direction of high-pressure air jet of air port, guide plate has relatively arranged first end and second end, first end is overlapped on second plate, and second end is suspended;Adjusting assembly is used to adjust the interval between first plate and second plate, so that the width size of air port can be adjusted, and then the proportional relationship of the air speed and air volume of high-pressure air ejected through air port can be adjusted, avoid the occurrence of plugging phenomenon, and can guarantee equipment normal operation, guarantee the structure quality of tobacco sheet.

Description

Technical Field

[0001] This utility model relates to the field of leaf re-drying technology, and in particular to a leaf re-drying material throwing air knife and air separator. Background Technology

[0002] In the tobacco threshing and re-drying production process, the air separator is an important main equipment. Its main function is to separate the mixture of tobacco leaves, stem leaves and fragments after the threshing machine has processed it. Therefore, the quality of the separated tobacco leaf structure is related to the overall quality of the tobacco leaves in the entire threshing and re-drying process.

[0003] Currently, air separators primarily rely on high-pressure fans to generate high-pressure air. This high-pressure air enters the throwing air knife through pipes and is then ejected from the nozzles of the throwing air knife to form high-pressure air. When tobacco leaves are fed into the air separator via a belt conveyor, they are propelled into the air within the middle chamber of the air separator by the high-pressure air ejected from the throwing air knife nozzles as they fall. There, two streams of air separation generated by the air separator fan further separate the tobacco leaves. Qualified tobacco flakes and fragments are separated by the combined action of positive pressure air entering from the lower chamber and negative pressure air at the discharge hood, flowing from the discharge hood into the discharge feeder and then to the next stage of equipment. Therefore, the volume and velocity of the high-pressure air ejected from the throwing air knife nozzles, along with the air separation volume and velocity of the air separator, play a crucial role in the effectiveness of the air separator's tobacco flake separation mechanism.

[0004] However, the air volume and velocity of the air separator can be adjusted by the frequency converter to control the fan speed. While the air velocity of the throwing air knife nozzle can be adjusted by the frequency converter to control the high-pressure fan speed, the nozzle size of the throwing air knife is fixed. As the high-pressure fan speed decreases, the air velocity at the throwing air knife nozzle also decreases. This results in the tobacco leaves entering the air separator not being able to be delivered into the air of the middle chamber, which can easily lead to material blockage. This not only affects the normal operation of the equipment but also results in poor tobacco sheet structure quality. Utility Model Content

[0005] The purpose of this utility model is to provide a leaf-beating and re-drying air knife and air separator to solve the problem that the fixed size of the nozzle of the current air knife leads to poor matching of the air velocity and air volume of the nozzle, which easily causes material blockage, affects the normal operation of the equipment, and results in poor quality of tobacco sheet structure.

[0006] On the one hand, this utility model provides a leaf-beating, re-drying, and blasting air knife, which includes:

[0007] An air knife body is provided with an air cavity and a nozzle communicating with the air cavity. The air knife body includes a first plate and a second plate arranged at intervals, and the nozzle is formed between the first plate and the second plate.

[0008] An air inlet duct is disposed on the air knife body and communicates with the air cavity;

[0009] The guide plate is fixedly connected to the air knife body and sprays high-pressure air in the direction of the nozzle. The guide plate has a first end and a second end that are arranged opposite to each other. The first end overlaps the second plate, and the second end is suspended.

[0010] An adjustment component is used to adjust the spacing between the first plate and the second plate.

[0011] As a preferred technical solution for the leaf re-drying and material-throwing air knife, the adjusting component includes a screw and a first nut screwed to the screw. The screw passes through the first plate and is threadedly connected to the second plate. The first nut is located between the first plate and the second plate and abuts against the first plate.

[0012] As a preferred technical solution for leaf-beating, re-drying, and material-throwing air knife, the leaf-beating, re-drying, and material-throwing air knife includes a plurality of adjustment components, which are spaced apart along the length direction of the air knife body.

[0013] As a preferred technical solution for the leaf re-drying and material-throwing air knife, the air knife body is provided with multiple air inlet pipes, which are spaced apart along the length direction of the air knife body.

[0014] As a preferred technical solution for the leaf-beating, re-drying, and material-throwing air knife, the leaf-beating, re-drying, and material-throwing air knife further includes multiple connecting components, which are spaced apart along the length direction of the air knife body, and the connecting components are used to connect the first end of the guide plate and the second plate.

[0015] As a preferred technical solution for the leaf re-drying and material-throwing air knife, the connecting assembly includes a positioning block, a connecting bolt, and two second nuts. The positioning block is fixedly disposed at the first end of the guide plate, the connecting bolt is fixedly disposed at the second plate, the connecting bolt passes through the positioning block, and the two second nuts are threadedly connected to the connecting bolt, and the two second nuts are respectively located on both sides of the positioning block.

[0016] As a preferred technical solution for the leaf re-drying and material throwing air knife, the air knife body further includes a C-shaped air knife body main body, and a first end cap and a second end cap respectively connected to both ends of the air knife body main body in the length direction. The first plate and the second plate are both connected to the air knife body main body, and the first plate and the second plate are both located between the first end cap and the second end cap, and the first plate and the second plate abut against the first end cap and the second end cap respectively.

[0017] The first end cap, the second end cap, and the air knife body form the air cavity, and the first end cap, the second end cap, the first plate, and the second plate form the nozzle.

[0018] As a preferred technical solution for the leaf-beating, re-drying, and material-throwing air knife, the leaf-beating, re-drying, and material-throwing air knife further includes a rotating shaft, which is fixedly installed through the first end cover and the second end cover, and the rotating shaft is located outside the nozzle.

[0019] As a preferred technical solution for the leaf re-drying and material-throwing air knife, the two ends of the guide plate are detachably connected to the first end cover and the second end cover, respectively.

[0020] The leaf-beating, re-drying, and material-sparing air knife provided by this utility model has at least the following beneficial effects:

[0021] The leaf re-drying and blasting air knife includes an air knife body, an air inlet pipe, a guide plate, and an adjustment component. The air knife body is provided with an air cavity and a nozzle communicating with the air cavity. The air knife body includes a first plate and a second plate spaced apart, with the nozzle formed between the first plate and the second plate. The air inlet pipe is provided in the air knife body and communicates with the air cavity. The guide plate is fixedly connected to the air knife body and sprays high-pressure air along the direction of the nozzle. The guide plate has a first end and a second end that are arranged opposite to each other. The first end overlaps the second plate, and the second end is suspended. The adjustment component is used to adjust the distance between the first plate and the second plate, so that the width of the nozzle can be adjusted. This allows for adjustment of the ratio of the wind speed to the air volume of the high-pressure air sprayed through the nozzle, avoiding material blockage and ensuring normal equipment operation and the structural quality of the tobacco sheets.

[0022] On the other hand, this utility model provides an air separator, including the leaf-beating, re-drying, and material-throwing air knife in any of the above-mentioned solutions. The air separator also includes a high-pressure fan, which is used to provide high-pressure air to the air inlet pipe.

[0023] The air separator provided by this utility model has at least the following beneficial effects:

[0024] The air separator includes the aforementioned leaf-beating, re-drying, and material-throwing air knife. The width of the nozzle of the leaf-beating, re-drying, and material-throwing air knife can be adjusted according to actual needs, thereby adjusting the ratio between the flow rate and wind speed of the high-pressure air ejected through the nozzle. This can prevent material blockage, ensure the normal operation of the air separator, and improve the structural quality of the tobacco sheets. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the leaf-beating, re-baking, and material-throwing air knife in an embodiment of this utility model;

[0026] Figure 2 This is an exploded view of the leaf re-baking and material-throwing air knife in this embodiment of the present invention;

[0027] Figure 3 This is a front view of a partial structure of the leaf-beating, re-baking, and material-throwing air knife in an embodiment of this utility model;

[0028] Figure 4 This is an isometric view of a partial structure of the leaf-beating, re-baking, and material-throwing air knife in an embodiment of this utility model;

[0029] Figure 5 This is a partial structural diagram of the air knife body in an embodiment of this utility model.

[0030] In the picture:

[0031] 1. Air knife body; 11. Air cavity; 12. Nozzle; 13. Main body of air knife body; 14. First end cap; 15. Second end cap; 16. First plate; 17. Second plate; 18. First connecting screw; 19. Second connecting screw;

[0032] 2. Air inlet duct; 3. Material guide plate;

[0033] 4. Adjustment assembly; 41. Screw; 42. First nut;

[0034] 5. Connecting assembly; 51. Positioning block; 52. Connecting bolt; 53. Second nut;

[0035] 6. Third connecting screw; 7. Shaft. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the related technology of air separators, although the air velocity of the throwing air knife nozzle can be adjusted by the frequency converter to adjust the high-pressure blower speed, the size of the throwing air knife nozzle is fixed. As the high-pressure blower speed decreases, the air velocity at the throwing air knife nozzle also decreases. This causes the tobacco leaves entering the air separator to be unable to be delivered into the air of the middle chamber, which can easily lead to material blockage. This not only affects the normal operation of the equipment, but also results in poor tobacco sheet structure quality.

[0041] To address this issue, this embodiment provides a leaf-beating, re-drying, and material-throwing air knife, which can be used in an air separator.

[0042] Please refer to Figures 1 to 5The leaf re-drying and material-throwing air knife includes an air knife body 1, an air inlet pipe 2, a material guide plate 3, and an adjustment component 4. The air knife body 1 has an air cavity 11 and a nozzle 12 communicating with the air cavity 11. The air knife body 1 includes a first plate 16 and a second plate 17 spaced apart, with the nozzle 12 formed between the first plate 16 and the second plate 17. The air inlet pipe 2 is disposed in the air knife body 1 and communicates with the air cavity 11. The material guide plate 3 is fixedly connected to the air knife body 1 and sprays high-pressure air along the direction of the nozzle 12. The material guide plate 3 has a first end and a second end arranged opposite to each other, with the first end overlapping the second plate 17 and the second end suspended. The adjustment component 4 is used to adjust the distance between the first plate 16 and the second plate 17. In this embodiment, the leaf-beating and re-drying air knife is used in practice. The air inlet pipe 2 is used to connect to a high-pressure air source. High-pressure air enters the air chamber 11 of the air knife body 1 through the air inlet pipe 2, and then is ejected through the nozzle 12. The high-pressure air ejected from the nozzle 12 flows over the surface of the guide plate 3. The falling tobacco leaves, under the action of the high-pressure air ejected from the nozzle 12 and guided by the guide plate 3, can be blown into the air of the middle chamber of the air separator. Since the distance between the first plate 16 and the second plate 17 can be adjusted by the adjustment component 4, the width of the nozzle 12 can be adjusted, thereby adjusting the ratio of the wind speed and air volume of the high-pressure air ejected through the nozzle 12, avoiding material blockage, ensuring normal equipment operation, and ensuring the structural quality of the tobacco leaves.

[0043] Alternatively, please refer to Figure 2 and Figure 3 The adjusting component 4 includes a screw 41 and a first nut 42 screwed to the screw 41. The screw 41 passes through the first plate 16 and is threadedly connected to the second plate 17. The first nut 42 is located between the first plate 16 and the second plate 17, and abuts against the first plate 16. This configuration allows the relative position of the first plate 16 and the screw 41 to be fixed by the engagement of the screw 41 and the first nut 42. Then, by tightening the screw 41, the screw 41 moves the first plate 16 closer to or further away from the second plate 17, thereby adjusting the distance between the first plate 16 and the second plate 17, and thus adjusting the width of the nozzle 12.

[0044] It should be noted that both the first plate 16 and the second plate 17 can be made of sheet metal. When the external force applied to the first plate 16 and the second plate 17 is large enough, the first plate 16 and the second plate 17 can deform to a certain extent under the external force. Specifically, in this embodiment, under the action of the adjusting component 4, the first plate 16 and the second plate 17 can undergo slight deformation so that the width of the nozzle 12 can be adjusted.

[0045] Optionally, the spacing between the first plate 16 and the second plate 17 is approximately 1.5 mm.

[0046] In other embodiments, the adjusting component 4 may also include a bidirectional screw, with a forward thread and a reverse thread at both ends of the bidirectional screw, and the two ends of the bidirectional screw are threadedly connected to the first plate 16 and the second plate 17, respectively, so that rotating the bidirectional screw can make the first plate 16 and the second plate 17 move closer to each other or further away from each other.

[0047] Alternatively, please refer to Figure 2 The leaf re-baking and material-throwing air knife includes multiple adjustment components 4, which are spaced apart along the length of the air knife body 1. By setting multiple adjustment components 4, it can be ensured that the width of the nozzle 12 is relatively uniform at all points when the width of the nozzle 12 is adjusted.

[0048] Specifically, in this embodiment, the length direction of the air knife body 1 is along the left-right direction, and the length direction of the air knife body 1 is consistent with the length direction of the nozzle 12. The nozzle 12 sprays high-pressure air in the front-back direction, and the width direction of the nozzle 12 is along the up-down direction.

[0049] Alternatively, please refer to Figure 2 The air knife body 1 is provided with multiple air inlet pipes 2, which are spaced apart along the length of the air knife body 1. By providing multiple air inlet pipes 2, it can be ensured that the high-pressure air entering the air cavity 11 is relatively even along the length of the air knife body 1.

[0050] Alternatively, please refer to Figure 2 and Figure 5 The air knife body 1 also includes a C-shaped air knife body 13, and a first end cap 14 and a second end cap 15 connected to the two ends of the air knife body 13 along its length. A first plate 16 and a second plate 17 are both connected to the air knife body 13, located between the first end cap 14 and the second end cap 15, and abutting against the first end cap 14 and the second end cap 15 respectively. The first end cap 14, the second end cap 15, and the air knife body 13 together form an air cavity 11, and the first end cap 14, the second end cap 15, the first plate 16, and the second plate 17 together form a nozzle 12. When high-pressure air enters the air cavity 11 through the air inlet pipe 2, it can be stabilized by the air cavity 11, so that the high-pressure air is evenly ejected through the nozzle 12.

[0051] Alternatively, please refer to Figure 2 and Figure 4 The air knife body 1 also includes a plurality of first connecting screws 18 and a plurality of second connecting screws 19. The first end cap 14 is detachably connected to the air knife body 13 by the plurality of first connecting screws 18, and the second end cap 15 is detachably connected to the air knife body 13 by the plurality of second connecting screws 19, so as to facilitate disassembly and maintenance.

[0052] Alternatively, please refer to Figure 5 The air knife body 13, the first plate 16, and the second plate 17 are integrally formed. In other embodiments, the first plate 16 and the second plate 17 can also be connected to the air knife body 13 by welding or other means.

[0053] Alternatively, please refer to Figure 2 and Figure 4 The two ends of the guide plate 3 are detachably connected to the first end cover 14 and the second end cover 15, respectively. Specifically, the two ends of the guide plate 3 are detachably connected to the first end cover 14 and the second end cover 15 by a plurality of third connecting screws 6, so as to facilitate disassembly and maintenance.

[0054] Alternatively, please refer to Figure 4 The leaf re-drying and material-throwing air knife also includes multiple connecting components 5, which are spaced apart along the length of the air knife body 1. The connecting components 5 are used to connect the first end of the guide plate 3 and the second plate 17. This arrangement can further improve the connection stability between the first end of the guide plate 3 and the second plate 17.

[0055] Alternatively, please refer to Figure 4 The connecting component 5 includes a positioning block 51, a connecting bolt 52, and two second nuts 53. The positioning block 51 is fixedly disposed at the first end of the guide plate 3, and the connecting bolt 52 is fixedly disposed on the second plate 17. The connecting bolt 52 passes through the positioning block 51. The two second nuts 53 are threadedly connected to the connecting bolt 52, and the two second nuts 53 are respectively located on both sides of the positioning block 51. With this arrangement, when the guide plate 3 is deformed, the guide plate 3 can be adjusted in position relative to the second plate 17 along the axial direction of the connecting bolt 52 by the positioning block 51, so that the top surface of the guide plate 3 is not higher than the second plate 17. The guide plate 3 will not block the high-pressure air ejected from the nozzle 12, so that the high-pressure air ejected from the nozzle 12 can be blown evenly over the top surface of the guide plate 3.

[0056] Alternatively, please refer to Figure 1 , Figure 2 and Figure 4 The leaf-beating and re-drying air knife also includes a rotating shaft 7, which is fixedly installed through the first end cover 14 and the second end cover 15, and is located outside the nozzle 12. The rotating shaft 7 is used for transmission connection with an external adjustment mechanism. The external adjustment mechanism drives the rotating shaft 7 to rotate, thereby adjusting the posture of the entire leaf-beating and re-drying air knife, that is, adjusting the flow direction of the high-pressure air ejected through the nozzle 12, so that the angle of the material thrown into the middle chamber of the air separator can be varied.

[0057] This embodiment also provides an air separator, which includes the aforementioned leaf re-drying and blasting air knife and a high-pressure blower for supplying high-pressure air to the air inlet pipe 2. Since the width of the nozzle 12 of the leaf re-drying and blasting air knife is adjustable, the width of the nozzle 12 can be adjusted according to actual needs, thereby adjusting the ratio between the flow rate and wind speed of the high-pressure air ejected through the nozzle 12. This avoids material blockage, ensures the normal operation of the air separator, and improves the structural quality of the tobacco sheets.

[0058] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in this utility model is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

[0059] Furthermore, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this invention. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0060] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

Claims

1. A leaf-beating, re-baking, and blasting air knife, characterized in that, include: The air knife body (1) is provided with an air cavity (11) and a nozzle (12) communicating with the air cavity (11). The air knife body (1) includes a first plate (16) and a second plate (17) arranged at intervals. The nozzle (12) is formed between the first plate (16) and the second plate (17). An air inlet pipe (2) is disposed on the air knife body (1) and communicates with the air cavity (11); The guide plate (3) is fixedly connected to the air knife body (1) and sprays high-pressure air along the direction of the nozzle (12). The guide plate (3) has a first end and a second end that are arranged opposite to each other. The first end overlaps the second plate (17) and the second end is suspended. Adjustment component (4) is used to adjust the spacing between the first plate (16) and the second plate (17).

2. The leaf-beating, re-drying, and material-spraying air knife according to claim 1, characterized in that, The adjustment assembly (4) includes a screw (41) and a first nut (42) screwed to the screw (41). The screw (41) passes through the first plate (16) and is threaded to the second plate (17). The first nut (42) is located between the first plate (16) and the second plate (17) and abuts against the first plate (16).

3. The leaf-beating, re-drying, and material-spraying air knife according to claim 1, characterized in that, The leaf-beating, re-drying, and material-throwing air knife includes multiple adjustment components (4), which are spaced apart along the length of the air knife body (1).

4. The leaf-beating, re-drying, and material-spraying air knife according to claim 1, characterized in that, The air knife body (1) is provided with a plurality of air inlet pipes (2), and the plurality of air inlet pipes (2) are spaced apart along the length direction of the air knife body (1).

5. The leaf-beating, re-drying, and material-spraying air knife according to claim 1, characterized in that, The leaf-beating and re-baking air knife also includes multiple connecting components (5), which are spaced apart along the length of the air knife body (1), and the connecting components (5) are used to connect the first end of the guide plate (3) to the second plate (17).

6. The leaf-beating, re-drying, and material-spraying air knife according to claim 5, characterized in that, The connecting assembly (5) includes a positioning block (51), a connecting bolt (52) and two second nuts (53). The positioning block (51) is fixedly disposed at the first end of the guide plate (3). The connecting bolt (52) is fixedly disposed on the second plate (17). The connecting bolt (52) passes through the positioning block (51). The two second nuts (53) are threadedly connected to the connecting bolt (52), and the two second nuts (53) are respectively located on both sides of the positioning block (51).

7. The leaf-beating, re-drying, and material-spraying air knife according to any one of claims 1-6, characterized in that, The air knife body (1) further includes an air knife body main body (13) with a C-shaped cross section, and a first end cap (14) and a second end cap (15) respectively connected to both ends of the air knife body main body (13) in the length direction. The first plate (16) and the second plate (17) are both connected to the air knife body main body (13). The first plate (16) and the second plate (17) are both located between the first end cap (14) and the second end cap (15), and the first plate (16) and the second plate (17) abut against the first end cap (14) and the second end cap (15) respectively. The first end cap (14), the second end cap (15) and the air knife body (1) are arranged to form the air cavity (11), and the first end cap (14), the second end cap (15), the first plate (16) and the second plate (17) are arranged to form the nozzle (12).

8. The leaf-beating, re-drying, and material-spraying air knife according to claim 7, characterized in that, The leaf-beating and re-baking air knife also includes a rotating shaft (7), which is fixedly installed on the first end cap (14) and the second end cap (15), and the rotating shaft (7) is located outside the nozzle (12).

9. The leaf-beating, re-drying, and material-spraying air knife according to claim 7, characterized in that, The two ends of the guide plate (3) are detachably connected to the first end cap (14) and the second end cap (15), respectively.

10. A wind separator, characterized in that, The air knife for leaf re-drying and material throwing as described in any one of claims 1-9, the air separator further includes a high-pressure fan, the high-pressure fan being used to provide high-pressure air to the air inlet pipe (2).

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