Knife door structure and shredding equipment

Abstract

The utility model belongs to the technical field of tobacco processing equipment, and discloses a knife door structure and shredding equipment. The knife door structure comprises an upper knife door, a lower knife door and two side knife doors, the upper knife door comprises an upper knife door body and two upper pressing arc parts, the two upper pressing arc parts are arranged at the two ends of the upper knife door body in the length direction, and the two upper pressing arc parts extend from the upper knife door body in the direction close to the lower knife door; the lower knife door comprises a lower knife door body and two lower pressing arc parts, the two lower pressing arc parts are arranged at the two ends of the lower knife door body in the length direction, and the two lower pressing arc parts extend from the lower knife door body in the direction close to the upper knife door. When the knife door structure applies pressure to materials, the pressure can be transmitted to the materials through the upper pressing arc part and the lower pressing arc part, the pressure can have component force in the horizontal direction, the pressure applying effect is optimized, the compaction degree of the materials can be improved, the cavity phenomenon is effectively reduced, sheet running is prevented, and the tobacco shredding quality and the production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco processing equipment, and in particular to the knife gate structure and shredding equipment. Background Technology

[0002] In the tobacco shredding process, the cutter gate structure is a crucial component, its function being to compress the tobacco leaves to facilitate the shredding operation. The cutter gate structure typically consists of an upper cutter gate, a lower cutter gate, and two side cutter gates. In actual use, the upper cutter gate moves towards the lower cutter gate, applying pressure to the tobacco leaves. In existing technologies, the upper and lower cutter gates are usually right-angled. While this right-angled structure is cheaper, it leads to uneven pressure distribution on the tobacco leaves, making it difficult to fully compress them and creating voids within the leaves. These voids not only affect the uniformity of shredding and reduce tobacco quality but also cause leaf slippage, leading to accidental slippage from the cutter gate structure during shredding, interrupting the shredding process, reducing production efficiency, and wasting materials.

[0003] Therefore, a knife gate structure and shredding equipment are needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a knife gate structure and a shredding device that can optimize the pressure application method on tobacco leaves by changing the structural shape of the upper and lower knife gates, thereby improving the compaction of tobacco leaves, reducing voids, and effectively preventing leaf slippage, thus improving the quality and production efficiency of tobacco shredding.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The tool gate structure includes an upper tool gate, a lower tool gate, and two side tool gates. The two side tool gates are spaced apart along a first direction and are symmetrical. The lower tool gate is fixedly disposed below the two side tool gates, and the upper tool gate is slidably disposed between the two side tool gates along a second direction. The upper tool gate includes an upper tool gate body and two upper pressing arc portions. The two upper pressing arc portions are disposed at both ends of the upper tool gate body along its length direction and extend from the upper tool gate body along a direction close to the lower tool gate. The lower tool gate includes a lower tool gate body and two lower pressing arc portions. The two lower pressing arc portions are disposed at both ends of the lower tool gate body along its length direction and extend from the lower tool gate body along a direction close to the upper tool gate. The two upper pressing arc portions and the two lower pressing arc portions are arranged in a one-to-one correspondence.

[0007] As an optional technical solution, the arc-shaped surface of the upper pressing arc portion and the corresponding working surface of the side knife door are smoothly transitioned; and / or, the lower pressing arc portion and the arc-shaped surface are smoothly transitioned to the corresponding working surface of the side knife door.

[0008] As an optional technical solution, the height of the upper pressure arc gradually decreases in the opposite direction of the material conveying direction; and / or, the height of the lower pressure arc gradually decreases in the opposite direction of the material conveying direction.

[0009] As an optional technical solution, the tool gate structure further includes an upper mounting base and a lower mounting base, wherein the upper tool gate is detachably connected to the upper mounting base and the lower tool gate is detachably connected to the lower mounting base.

[0010] As an optional technical solution, the lower knife gate body includes a first lower knife gate body and a second lower knife gate body, the top plane of the first lower knife gate body and the top plane of the second lower knife gate body are coplanar; the first lower knife gate body is provided with a first downward pressing arc portion, the second lower knife gate body is provided with a second downward pressing arc portion, and the first downward pressing arc portion and the second downward pressing arc portion form the downward pressing arc portion.

[0011] As an optional technical solution, the upper mounting base is provided with a mounting groove, the upper blade is installed in the mounting groove, and the working surface of the upper blade and the end face of the mounting groove facing the lower blade are coplanar.

[0012] As an optional technical solution, the lower mounting base has a first mounting surface and a second mounting surface, the first mounting surface and the second mounting surface are set at an angle, the first lower blade door body is mounted on the first mounting surface, and the second lower blade door body is mounted on the second mounting surface.

[0013] As an optional technical solution, the upper mounting base is provided with a first threaded hole, the upper tool gate body is provided with a first through hole, and a first bolt passes through the first through hole and is threadedly connected to the first threaded hole to connect the upper tool gate to the upper mounting base; and / or, the first lower tool gate body is provided with a second through hole, the first mounting surface of the lower mounting base is provided with a second threaded hole, and a second bolt passes through the second through hole and is threadedly connected to the second threaded hole to connect the first lower tool gate body to the lower mounting base; and / or, the second lower tool gate body is provided with a third through hole, the second mounting surface of the lower mounting base is provided with a third threaded hole, and a third bolt passes through the third through hole and is threadedly connected to the third threaded hole to connect the second lower tool gate body to the lower mounting base.

[0014] As an optional technical solution, the upper mounting base is provided with a first inclined surface, and the second lower blade body is provided with a second inclined surface, wherein the first inclined surface and the second inclined surface are set at an angle.

[0015] This utility model also adopts the following technical solution:

[0016] A shredding device includes a conveying structure, a driving structure, and a shredding structure. The shredding device also includes a knife gate structure as described above. The conveying structure is disposed on one side of the knife gate structure for conveying materials, and the shredding structure is disposed on the other side of the knife gate structure for shredding the materials. The driving structure is connected to the upper knife gate for driving the upper knife gate to move and providing a clamping force to the materials through the upper knife gate.

[0017] The beneficial effects of this utility model are:

[0018] This utility model discloses a tool gate structure, which includes an upper tool gate, a lower tool gate, and two side tool gates. The two side tool gates are spaced apart along a first direction and are symmetrical. The lower tool gate is fixedly disposed below the two side tool gates, and the upper tool gate is slidably disposed between the two side tool gates along a second direction. The upper tool gate includes an upper tool gate body and two upper pressing arc portions. The two upper pressing arc portions are disposed at both ends of the upper tool gate body along the length direction and extend from the upper tool gate body along the direction close to the lower tool gate. The lower tool gate includes a lower tool gate body and two lower pressing arc portions. The two lower pressing arc portions are disposed at both ends of the lower tool gate body along the length direction and extend from the lower tool gate body along the direction close to the upper tool gate. The two upper pressing arc portions and the two lower pressing arc portions are arranged in a one-to-one correspondence. This knife gate structure features an upper pressure arc on the upper knife gate and a lower pressure arc on the lower knife gate, with the upper and lower pressure arcs corresponding to each other. When the upper knife gate applies pressure to the material, the pressure can be transmitted to the material through the upper and lower pressure arcs, thus enabling the pressure to have a horizontal component. This optimizes the pressure effect on the material, improves the compaction of the material, effectively reduces voids, and effectively prevents tobacco strip slippage, thereby improving the quality and production efficiency of tobacco shredding.

[0019] This utility model also discloses a shredding device, which includes a conveying structure and a driving structure, as well as a knife gate structure as described above. The conveying structure is disposed on one side of the knife gate structure for conveying materials, and the shredding structure is disposed on the other side of the knife gate structure for shredding the materials. The driving structure is connected to the upper knife gate for driving the upper knife gate to move and providing a pressing force to the materials through the upper knife gate. This shredding device, by incorporating the aforementioned knife gate structure, optimizes the pressure applied to the materials, improves the compaction of the materials, effectively reduces voids, and thus effectively prevents tobacco shredding from slipping, thereby improving the quality and production efficiency of tobacco shredding. Attached Figure Description

[0020] Figure 1 This is a partial structural schematic diagram of the knife gate structure according to an embodiment of the present utility model;

[0021] Figure 2This is a schematic diagram of the upper knife gate structure according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the lower blade gate in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the upper mounting base according to an embodiment of the present utility model. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the structure of the upper mounting base according to an embodiment of the present utility model. Figure 2 ;

[0025] Figure 6 This is a schematic diagram of the structure of the lower mounting base according to an embodiment of the present utility model.

[0026] In the picture:

[0027] 10. Upper knife gate; 11. Upper knife gate body; 111. First through hole; 112. First bolt; 12. Upper pressure arc part;

[0028] 20. Lower cutter gate; 21. Lower cutter gate body; 211. First lower cutter gate body; 2111. Second bolt; 2112. Connecting part; 2113. Working part; 212. Second lower cutter gate body; 2121. Third through hole; 2122. Third bolt; 2123. Second inclined surface; 22. Lower pressing arc; 221. First lower pressing arc; 222. Second lower pressing arc;

[0029] 30. Side knife gate;

[0030] 40. Upper mounting base; 41. Mounting groove; 42. First threaded hole; 43. First inclined surface;

[0031] 50. Lower mounting base; 51. First mounting surface; 52. Second mounting surface; 53. Second threaded hole; 54. Third threaded hole. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[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 invention, 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.

[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] like Figures 1 to 6As shown, this embodiment provides a knife gate structure, which includes an upper knife gate 10, a lower knife gate 20, and two side knife gates 30. The two side knife gates 30 are spaced apart along a first direction and are symmetrical. The lower knife gate 20 is fixedly disposed below the two side knife gates 30, and the upper knife gate 10 is slidably disposed between the two side knife gates 30 along a second direction. The upper knife gate 10 includes an upper knife gate body 11 and two upper pressing arc portions 12. The two upper pressing arc portions 12 are disposed at both ends of the upper knife gate body 11 along the length direction and extend from the upper knife gate body 11 along the direction close to the lower knife gate 20. The lower knife gate 20 includes a lower knife gate body 21 and two lower pressing arc portions 22. The two lower pressing arc portions 22 are disposed at both ends of the lower knife gate body 21 along the length direction and extend from the lower knife gate body 21 along the direction close to the upper knife gate 10. The two upper pressing arc portions 12 and the two lower pressing arc portions 22 are arranged in a one-to-one correspondence. Specifically, in this embodiment, the upper knife gate 10 of this knife gate structure is provided with an upper pressing arc portion 12, and the lower knife gate 20 is provided with a lower pressing arc portion 22. The upper pressing arc portion 12 and the lower pressing arc portion 22 are correspondingly arranged, so that when the upper knife gate 10 applies pressure to the material, the pressure can be transmitted to the material through the upper pressing arc portion 12 and the lower pressing arc portion 22, so that the pressure has a horizontal component force, and the material can have a certain driving force for movement in the horizontal direction. This optimizes the pressure effect on the material, helps to improve the compaction of the material, effectively reduces voids, and effectively prevents the tobacco from slipping, thereby improving the quality and production efficiency of tobacco shredding.

[0037] Furthermore, such as Figure 1 As shown, the arc-shaped surface of the upper pressing arc portion 12 and the corresponding working surface of the side knife gate 30 transition smoothly; and / or, the arc-shaped surface of the lower pressing arc portion 22 and the corresponding working surface of the side knife gate 30 transition smoothly. Specifically, in this embodiment, the working surface of the side knife gate 30 is the end face facing the material. The arc-shaped surface of the upper pressing arc portion 12 and the corresponding working surface of the side knife gate 30 transition smoothly, and the arc-shaped surface of the lower pressing arc portion 22 and the corresponding working surface of the side knife gate 30 transition smoothly. This can minimize the possibility of material entering the gap formed between the side knife gate 30 and the upper knife gate 10, and / or prevent material from entering the gap formed between the side knife gate 30 and the lower knife gate 20, thus avoiding restricted movement of the upper knife gate 10 and affecting production efficiency.

[0038] Furthermore, the height of the upper pressure arc 12 gradually decreases in the opposite direction of the material conveying direction; and / or, the height of the lower pressure arc 22 gradually decreases in the opposite direction of the material conveying direction. Specifically, in this embodiment, the heights of both the upper pressure arc 12 and the lower pressure arc 22 gradually decrease in the opposite direction of the material conveying direction, which can reduce the resistance to material movement, ensure the smoothness of material movement, and thus ensure the production efficiency of the product.

[0039] Furthermore, such as Figure 1As shown, the tool gate structure also includes an upper mounting base 40 and a lower mounting base 50. The upper tool gate 10 is detachably connected to the upper mounting base 40, and the lower tool gate 20 is detachably connected to the lower mounting base 50. Specifically, in this embodiment, both the upper tool gate 10 and the lower tool gate 20 are detachably connected, which facilitates the maintenance or replacement of the upper tool gate 10 and the lower tool gate 20, improving the convenience and flexibility of use.

[0040] Furthermore, such as Figure 3 As shown, the lower knife gate body 21 includes a first lower knife gate body 211 and a second lower knife gate body 212. The top planes of the first lower knife gate body 211 and the second lower knife gate body 212 are coplanar. The first lower knife gate body 211 is provided with a first downward pressing arc portion 221, and the second lower knife gate body 212 is provided with a second downward pressing arc portion 222. The first downward pressing arc portion 221 and the second downward pressing arc portion 222 form the downward pressing arc portion 22. Specifically, in this embodiment, the lower knife gate body 21 is set as a split type, which can reduce the processing difficulty of the lower knife gate body 21 and reduce its processing cost. The coplanarity of the top planes of the first lower knife gate body 211 and the second lower knife gate body 212 can reduce the resistance to material movement, improve its conveying efficiency, and thus help improve the shredding efficiency.

[0041] Furthermore, the upper mounting base 40 is provided with a mounting groove 41, and the upper blade 10 is installed in the mounting groove 41, with the working surface of the upper blade 10 and the end face of the mounting groove 41 facing the lower blade 20 being coplanar. Specifically, in this embodiment, this arrangement enables the upper blade 10 to have a better pressing effect on the material, thereby ensuring the normal shredding of the material.

[0042] Furthermore, such as Figure 6 As shown, the lower mounting base 50 has a first mounting surface 51 and a second mounting surface 52, which are angled together. The first lower tool gate body 211 is mounted on the first mounting surface 51, and the second lower tool gate body 212 is mounted on the second mounting surface 52. Specifically, in this embodiment, the first mounting surface 51 and the second mounting surface 52 are perpendicular to each other, which facilitates machining. The first lower tool gate body 211 is mounted on the first mounting surface 51, and the second lower tool gate 20 is mounted on the second mounting surface 52. The first lower tool gate body 211 and the second lower tool gate body 212 form the lower tool gate body 21, which improves the ease of installation.

[0043] Furthermore, such as Figure 5As shown, the upper mounting base 40 is provided with a first threaded hole 42, and the upper knife gate body 11 is provided with a first through hole 111. The first bolt 112 passes through the first through hole 111 and is threadedly connected to the first threaded hole 42 to connect the upper knife gate 10 to the upper mounting base 40; and / or, the first lower knife gate body 211 is provided with a second through hole, and the first mounting surface 51 of the lower mounting base 50 is provided with a second threaded hole 53. The second bolt 2111 passes through the second through hole and is threadedly connected to the second threaded hole 53 to connect the first lower knife gate body 211 to the lower mounting base 50; and / or, the second lower knife gate body 212 is provided with a third through hole 2121, and the second mounting surface 52 of the lower mounting base 50 is provided with a third threaded hole 54. The third bolt 2122 passes through the third through hole 2121 and is threadedly connected to the third threaded hole 54 to connect the second lower knife gate body 212 to the lower mounting base 50.

[0044] Specifically, in this embodiment, as Figure 2 and Figure 4 As shown, the upper knife gate body 11 has a number of first through holes 111 evenly spaced along its length direction, and the upper mounting base 40 has a number of first threaded holes 42 along its length direction. A number of first bolts 112 are inserted one by one through the number of first through holes 111 and then threadedly connected one by one to the number of first threaded holes 42 to connect the upper knife gate body 11 to the upper mounting base 40, thereby improving the ease of disassembly and assembly of the upper knife gate body 11 and the upper mounting base 40 and enhancing the flexibility of use.

[0045] like Figure 2 and Figure 4 As shown, in this embodiment, there are 6 first through holes 111, 6 first threaded holes 42, and 6 first bolts 112. In other embodiments, the number of first through holes 111, 42 first threaded holes, and 112 can be set according to actual use, and no limitation is made here.

[0046] Specifically, in this embodiment, as Figure 3 As shown, the first lower knife gate body 211 includes a connecting part 2112 and a working part 2113. The connecting part 2112 and the working part 2113 are fixedly connected. The lower pressing arc part 22 is disposed on the working part 2113. A second through hole is provided on the connecting part 2112. A second threaded hole 53 is provided on the first mounting surface 51 of the lower mounting base 50. The second bolt 2111 passes through the second through hole and is threadedly connected to the second threaded hole 53 to connect the first lower knife gate body 211 to the lower mounting base 50, thereby improving the ease of disassembly and assembly of the first lower knife gate body 211 and the lower mounting base 50 and enhancing the flexibility of use.

[0047] Specifically, in this embodiment, as Figure 3 and Figure 6As shown, the connecting part 2112 is provided with three second through holes along its length direction, and the first mounting surface 51 is provided with three second threaded holes 53 along the length direction of the lower mounting base 50. The three second bolts 2111 are respectively inserted through the three second through holes and then respectively threadedly connected to the three second threaded holes 53 to connect the first lower knife gate body 211 to the lower mounting base 50. In other embodiments, the number of second through holes, second threaded holes 53 and second bolts 2111 can be specifically set according to actual use, and is not limited here.

[0048] Specifically, in this embodiment, as Figure 3 and Figure 6 As shown, the second lower knife gate body 212 has four third through holes 2121 along its length direction, and the second mounting surface 52 has four third threaded holes 54 along the length direction of the lower mounting base 50. The four third bolts 2122 are inserted into the four third through holes 2121 and then threaded into the four third threaded holes 54 to connect the first lower knife gate body 211 to the lower mounting base 50, thereby improving the ease of disassembly and assembly of the second lower knife gate body 212 and the lower mounting base 50 and enhancing the flexibility of use.

[0049] In other embodiments, the number of the third through hole 2121, the third threaded hole 54 and the third bolt 2122 can be specifically set according to actual use, and no limitation is made here.

[0050] Furthermore, such as Figure 3 and Figure 5 As shown, the upper mounting base 40 is provided with a first inclined surface 43, and the second lower knife gate body 212 is provided with a second inclined surface 2123. The first inclined surface 43 and the second inclined surface 2123 are set at an angle. Specifically, in this embodiment, the first inclined surface 43 is provided on the upper mounting base 40 and is inclined upward along the opposite direction of the material conveying direction. The second inclined surface 2123 is provided on the second lower knife gate body 212 and is inclined downward along the opposite direction of the material conveying direction. This makes the opening formed by the first inclined surface 43 and the second inclined surface 2123 gradually increase along the opposite direction of the material conveying direction, thereby facilitating the entry of material into the conveying channel of the knife gate structure and reducing material loss.

[0051] This embodiment also provides a shredding device, which includes a conveying structure and a driving structure, as well as a knife gate structure as described above. The conveying structure is disposed on one side of the knife gate structure for conveying materials, and the shredding structure is disposed on the other side of the knife gate structure for shredding the materials. The driving structure is connected to the upper knife gate 10 for driving the upper knife gate 10 to move and providing a pressing force to the materials through the upper knife gate 10. This shredding device, by incorporating the aforementioned knife gate structure, can optimize the pressure effect on the materials, which is beneficial for improving the compaction of the materials, effectively reducing voids, and thus effectively preventing tobacco shredding, thereby improving the quality and production efficiency of tobacco shredding.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A knife gate structure, characterized in that, The blade gate structure includes an upper blade gate (10), a lower blade gate (20), and two side blade gates (30). The two side blade gates (30) are spaced apart along a first direction and are symmetrical. The lower blade gate (20) is fixedly disposed below the two side blade gates (30), and the upper blade gate (10) is slidably disposed between the two side blade gates (30) along a second direction. The upper blade gate (10) includes an upper blade gate body (11) and two upper pressure arc portions (12). The two upper pressure arc portions (12) are disposed along the upper blade gate body (11) along the second direction. The two upper pressure arcs (12) extend from the upper knife gate body (11) along the direction close to the lower knife gate (20) at both ends of the length direction; the lower knife gate (20) includes a lower knife gate body (21) and two lower pressure arcs (22), the two lower pressure arcs (22) are disposed at both ends of the lower knife gate body (21) along the length direction, the two lower pressure arcs (22) extend from the lower knife gate body (21) along the direction close to the upper knife gate (10), and the two upper pressure arcs (12) and the two lower pressure arcs (22) are disposed in a one-to-one correspondence.

2. The knife gate structure according to claim 1, characterized in that, The arc surface of the upper pressing arc portion (12) and the working surface of the corresponding side knife gate (30) are smoothly transitioned; and / or, the arc surface of the lower pressing arc portion (22) and the working surface of the corresponding side knife gate (30) are smoothly transitioned.

3. The knife gate structure according to claim 1, characterized in that, In the opposite direction to the material conveying direction, the height of the upper pressure arc (12) gradually decreases; And / or, in the opposite direction to the material conveying direction, the height of the downward pressure arc (22) gradually decreases.

4. The knife gate structure according to claim 1, characterized in that, The blade gate structure also includes an upper mounting base (40) and a lower mounting base (50), wherein the upper blade gate (10) is detachably connected to the upper mounting base (40) and the lower blade gate (20) is detachably connected to the lower mounting base (50).

5. The knife gate structure according to claim 4, characterized in that, The lower knife gate body (21) includes a first lower knife gate body (211) and a second lower knife gate body (212). The top plane of the first lower knife gate body (211) and the top plane of the second lower knife gate body (212) are coplanar. The first lower knife gate body (211) is provided with a first downward pressing arc (221), and the second lower knife gate body (212) is provided with a second downward pressing arc (222). The first downward pressing arc (221) and the second downward pressing arc (222) form the downward pressing arc (22).

6. The knife gate structure according to claim 5, characterized in that, The upper mounting base (40) is provided with a mounting groove (41), the upper knife gate (10) is installed in the mounting groove (41), and the working surface of the upper knife gate (10) and the end face of the mounting groove (41) facing the lower knife gate (20) are coplanar.

7. The knife gate structure according to claim 6, characterized in that, The lower mounting base (50) has a first mounting surface (51) and a second mounting surface (52), the first mounting surface (51) and the second mounting surface (52) are set at an angle, the first lower knife door body (211) is mounted on the first mounting surface (51), and the second lower knife door body (212) is mounted on the second mounting surface (52).

8. The knife gate structure according to claim 7, characterized in that, The upper mounting base (40) is provided with a first threaded hole (42), and the upper knife gate body (11) is provided with a first through hole (111). The first bolt (112) passes through the first through hole (111) and is threadedly connected to the first threaded hole (42) to connect the upper knife gate (10) to the upper mounting base (40). And / or, the first lower knife gate body (211) is provided with a second through hole, and the first mounting surface (51) of the lower mounting base (50) is provided with a second threaded hole (53). The second bolt (2111) passes through the second through hole and is threadedly connected to the second threaded hole (53) to connect the first lower knife gate body (211) to the lower mounting base (50); And / or, the second lower knife gate body (212) is provided with a third through hole (2121), and the second mounting surface (52) of the lower mounting base (50) is provided with a third threaded hole (54). The third bolt (2122) passes through the third through hole (2121) and is threadedly connected to the third threaded hole (54) to connect the second lower knife gate body (212) to the lower mounting base (50).

9. The knife gate structure according to claim 5, characterized in that, The upper mounting base (40) is provided with a first inclined surface (43), and the second lower knife door body (212) is provided with a second inclined surface (2123). The first inclined surface (43) and the second inclined surface (2123) are set at an angle.

10. A shredding device, comprising a conveying structure, a driving structure, and a shredding structure, characterized in that, The shredding device further includes a knife gate structure as described in any one of claims 1-9, wherein the conveying structure is disposed on one side of the knife gate structure for conveying materials, the shredding structure is disposed on the other side of the knife gate structure for shredding the materials, and the driving structure is connected to the upper knife gate (10) for driving the upper knife gate (10) to move and providing a pressing force to the materials through the upper knife gate (10).

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