A ramie scraping device

Abstract

The present invention relates to a bast scraping device, which comprises a frame, a driving structure and multiple groups of scraper structures; a material guiding plate and a rotating part are arranged on the frame, and the rotating part can rotate around its own axial direction; the multiple groups of scraper structures are arranged on the rotating part and are spaced along the circumferential direction of the rotating part, and are located on one side of the material guiding plate, so as to form a material guiding gap with the material guiding plate, the material guiding gap has a feeding end and a discharging end located on the circumference of the rotating part, each scraper structure can rotate around its own axial direction, and the axial direction thereof is the same as the axial direction of the rotating part, and a plurality of scraper parts are arranged at intervals along the circumferential direction of each scraper structure; the driving structure is arranged on the frame and is respectively drivingly connected with the rotating part and each scraper structure. This solution can save labor and improve the bast scraping efficiency, and each scraper structure can realize self-rotation and revolution, so as to simultaneously realize the conveying and separation of materials, making the overall device more compact.

Description

Technical Field

[0001] The present invention relates to the technical field of ramie scraping, and particularly to a ramie scraping device. Background Art

[0002] The fiber extracted from pineapple leaves, commonly known as pineapple ramie, is the only natural fiber in the world with three characteristics of antibacterial, odor removal and mite prevention. It can be processed into high-quality textile materials for functional textiles through deep processing. This industry has initially taken shape in China and has broad development prospects.

[0003] For example, Patent CN201056592Y discloses a manual ramie scraper. When in use, a cross bar is inserted on the tripod of the ramie scraper to hold the ramie stem. During operation, the ramie stem is inserted under the tip of the "^"-shaped fixed blade, pressed down into the middle and lower part of the movable blade, and then the ramie stem is pulled to separate the ramie fiber. However, it has a strong dependence on manual labor and relatively low ramie scraping efficiency. Summary of the Invention

[0004] In view of this, it is necessary to provide a ramie scraping device to solve the technical problem that the existing ramie scraping device has a strong dependence on manual labor and relatively low ramie scraping efficiency.

[0005] The present invention provides a ramie scraping device, which includes:

[0006] A frame, on which a material guiding plate and a rotating part are provided, and the rotating part can rotate around its own axis;

[0007] Multiple groups of scraper structures are arranged on the rotating part and are spaced along the circumferential direction of the rotating part, and are located on one side of the material guiding plate, so as to form a material guiding gap with the material guiding plate. The material guiding gap has a feeding end and a discharging end in the circumferential direction of the rotating part. Each scraper structure can rotate around its own axis, and its axial direction is the same as the axial direction of the rotating part. Among them, multiple scraper parts are arranged at intervals along the circumferential direction of each scraper structure; and,

[0008] A driving structure is arranged on the frame and is respectively drivingly connected with the rotating part and each scraper structure, and is used to drive the rotating part to rotate around its own axis, so that when multiple groups of scraper structures rotate following the rotating part, the material located in the material guiding gap can be driven to move from the feeding end to the discharging end, and is used to drive each scraper structure to rotate around its own axis, so that when multiple scraper parts of each group rotate following the corresponding scraper structure, the ramie fiber of the material located in the material guiding gap can be scraped off.

[0009] Optionally, a fixed gear ring is provided on the frame. The rotating part includes a planetary bracket which rotates about its own axis and is arranged on the frame and located inside the fixed gear ring. A plurality of planetary gears are provided on the planetary bracket. The plurality of planetary gears correspond to multiple groups of the scraper structures one by one. Each planetary gear is connected to the corresponding scraper structure, rotatably connected to the planetary bracket, and meshes with the fixed gear ring;

[0010] The driving structure meshes with each planetary gear to drive each planetary gear to rotate.

[0011] Optionally, the driving structure includes a sun gear and a driving motor. The sun gear is located between the plurality of planetary gears and meshes with each planetary gear. The driving motor is arranged on the frame, and its output shaft is drivingly connected to the sun gear to drive the sun gear to rotate;

[0012] Wherein, the planetary bracket rotatably sleeves on the output shaft of the driving motor around its axis.

[0013] Optionally, the scraper structure further includes a scraper cylinder which rotates about its axis and is arranged on the rotating part;

[0014] The scraper part is a scraper blade. The scraper blade extends along the axis of the scraper cylinder and is installed on the scraper cylinder, and a plurality of the scraper blades are arranged at intervals along the circumference of the scraper cylinder.

[0015] Optionally, the scraper blade is detachably connected to the scraper cylinder; and / or,

[0016] A plurality of mounting platforms are convexly provided on the scraper cylinder. The plurality of mounting platforms are arranged at intervals along the circumference of the scraper cylinder and correspond to the plurality of scraper blades one by one. Each mounting platform is inclined outward along the rotating direction of the scraper cylinder about its own axis to form a mounting side for mounting the scraper blade.

[0017] Optionally, the scraper cylinder includes an inner cylinder and an outer cylinder sleeved outside the inner cylinder. The inner cylinder and the outer cylinder are arranged at intervals to form a receiving cavity, and connecting ribs are connected between the inner cylinder and the outer cylinder;

[0018] Wherein, the mounting platform is formed on the outer cylinder, and a communication groove is opened at the tail end of the outer cylinder corresponding to the inclined direction of the mounting platform, and the communication groove communicates with the receiving cavity.

[0019] Optionally, the scraper structure further includes a scraper rotating shaft disposed in the inner cylinder, and one of the inner cylinder and the other are provided with a limiting groove and a limiting block that cooperates with the limiting groove to limit the relative rotation of the inner cylinder with respect to the scraper rotating shaft. The limiting groove extends along the axial direction of the inner cylinder, and at least one end is open;

[0020] Wherein, the scraper rotating shaft is rotatably disposed about its axial direction in the rotating part.

[0021] Optionally, the flax scraping device further includes two limiting plates, and the two limiting plates are spaced along the axial direction of the scraper rotating shaft and disposed on the frame;

[0022] The scraper cylinder is disposed between the two limiting plates, and the rotating part is located on one side of one limiting plate away from the other limiting plate.

[0023] Optionally, the material guiding plate is located between the two limiting plates, and both ends of it in the axial direction of the scraper rotating shaft respectively abut against the two limiting plates; and / or,

[0024] The limiting plate away from the rotating part is rotatably disposed about the axial direction of the scraper rotating shaft to form a limiting support plate, and one end of the scraper rotating shaft away from the rotating part is rotatably disposed on the limiting support plate.

[0025] Optionally, the material guiding plate has a moving stroke of approaching and departing from the scraper structure, so that the material guiding gap can be adjusted;

[0026] The flax scraping device further includes an adjustment driving part, and the adjustment driving part is disposed on the frame and is drivingly connected to the material guiding plate to drive the material guiding plate to move.

[0027] Compared with the prior art, when using the flax scraping device provided by the present invention, the pineapple leaves are placed between the scraper structure and the material guiding plate from the feeding end of the material guiding gap, and then the driving structure is used to drive a plurality of scraper structures to rotate synchronously with the rotating part, so that the pineapple leaves can move from the feeding end to the discharging end of the material guiding gap under the drive of the plurality of scraper structures; meanwhile, during the movement of the pineapple leaves, the driving structure also drives each scraper structure to rotate about its own axis to scrape off the flax fibers from the pineapple leaves. In this way, manual labor can be saved, the flax scraping efficiency can be improved, and each scraper structure can realize self-rotation and revolution to simultaneously realize the conveying and separation of materials, making the overall device more compact.

[0028] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The specific implementation manners of the present invention are given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are provided to further understand the present invention and form a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0030] Figure 1 is a schematic structural diagram of an embodiment of the bast scraping device provided by the present invention;

[0031] Figure 2 is Figure 1 a cross-sectional schematic diagram of the bast scraping device in;

[0032] Figure 3 is Figure 1 a partial structural schematic diagram of the bast scraping device in;

[0033] Figure 4 is Figure 1 a cross-sectional schematic diagram of the bast scraping device from another angle in;

[0034] Figure 5 is Figure 1 a schematic structural diagram of the planetary gear, sun gear and fixed ring gear in;

[0035] Figure 6 is Figure 1 a schematic diagram of the scraper structure in;

[0036] Figure 7 is Figure 6 a schematic structural diagram of the scraper cylinder in;

[0037] Figure 8 is Figure 6 a cross-sectional schematic diagram of the scraper structure in;

[0038] Figure 9 is Figure 8 a schematic diagram of the scraper structure in;

[0039] Figure 10 is Figure 1 a schematic structural diagram of the bast scraping device from another angle in.

[0040] Description of reference numerals:

[0041] 100 - Scutching device, 1 - Frame, 11 - Fixed gear ring, 2 - Feeding guide plate, 3 - Rotating part, 31 - Planet bracket, 32 - Planet gear, 4 - Scraper structure, 4a - Feeding gap, 4a1 - Feeding end, 4a2 - Discharging end, 41 - Scraper part, 411 - Scraper blade, 411a - Mounting hole, 42 - Scraper cylinder, 42a - Accommodating cavity, 421 - Inner cylinder, 421a - Limiting groove, 422 - Outer cylinder, 422a - Connecting groove, 423 - Connecting rib, 43 - Mounting platform, 43a - Threaded hole, 431 - Mounting side, 44 - Scraper rotating shaft, 441 - Limiting block, 45 - Fixed bolt, 5 - Driving structure, 51 - Sun gear, 52 - Driving motor, 6 - Limiting plate, 61 - Limiting support plate, 7 - Adjusting driving part, 71 - Adjusting hydraulic rod. Detailed implementation manner

[0042] The following will specifically describe the preferred embodiments of the present invention with reference to the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0043] Please refer to Figures 1 to 10 , this scutching device 100 includes a frame 1, a driving structure 5 and multiple groups of scraper structures 4; a feeding guide plate 2 and a rotating part 3 are provided on the frame 1, and the rotating part 3 can rotate around its own axis; multiple groups of scraper structures 4 are arranged on the rotating part 3 and are spaced along the circumferential direction of the rotating part 3, and are located on one side of the feeding guide plate 2, so as to form a feeding gap 4a with the feeding guide plate 2. The feeding gap 4a has a feeding end 4a1 and a discharging end 4a2 located on the circumference of the rotating part 3. Each scraper structure 4 can rotate around its own axis, and its axial direction is the same as the axial direction of the rotating part 3. Among them, a plurality of scraper parts 41 are arranged at intervals along the circumferential direction of each scraper structure 4; the driving structure 5 is arranged on the frame 1 and is respectively drivingly connected to the rotating part 3 and each scraper structure 4, so as to drive the rotating part 3 to rotate around its own axis, so that when multiple groups of scraper structures 4 rotate following the rotating part 3, the materials located in the feeding gap 4a can be driven to move from the feeding end 4a1 to the discharging end 4a2, and is used to drive each scraper structure 4 to rotate around its own axis, so that when the multiple scraper parts 41 of each group rotate following the corresponding scraper structure 4, the hemp fibers of the materials located in the feeding gap 4a can be scraped off.

[0044] When using the decorticating device 100 provided by the present invention, the pineapple leaves are placed between the scraper structure 4 and the feeding plate 2 from the feeding end 4a1 of the feeding gap 4a, and then the driving structure 5 is used to drive the plurality of scraper structures 4 to rotate synchronously with the rotating part 3, so that the pineapple leaves can move from the feeding end 4a1 to the discharging end 4a2 of the feeding gap 4a under the drive of the plurality of scraper structures 4; meanwhile, during the movement of the pineapple leaves, the driving structure 5 also drives each scraper structure 4 to rotate around its own axis to scrape off the hemp fibers from the pineapple leaves. In this way, manual labor can be saved, the decorticating efficiency can be improved, and each scraper structure 4 can realize self-rotation and revolution, so as to simultaneously realize the transmission and separation of materials, making the overall device more compact.

[0045] Further, a fixed gear ring 11 is provided on the frame 1. The rotating part 3 includes a planetary bracket 31. The planetary bracket 31 is rotatably arranged around its own axis on the frame 1 and is located inside the fixed gear ring 11, and a plurality of planetary gears 32 are provided thereon. The plurality of planetary gears 32 correspond to the plurality of scraper structures 4 one by one. Each planetary gear 32 is connected to the corresponding scraper structure 4 and is rotatably connected to the planetary bracket 31 and meshes with the fixed gear ring 11; the driving structure 5 meshes with each planetary gear 32 to drive each planetary gear 32 to rotate. In this embodiment, when the driving structure 5 drives each planetary gear 32 to rotate around its own axis, since the planetary gear 32 meshes with the fixed gear ring 11 and the planetary bracket 31 is correspondingly rotatably arranged, the plurality of planetary gears 32 can rotate around the axis of the planetary bracket 31, and further can drive the plurality of scraper structures 4 to rotate around the axis between the planets, so as to drive the pineapple leaves from the feeding end 4a1 of the feeding gap 4a to the discharging end 4a2.

[0046] Furthermore, the driving structure 5 includes a sun gear 51 and a driving motor 52. The sun gear 51 is located between the plurality of planetary gears 32 and meshes with each planetary gear 32. The driving motor 52 is arranged on the frame 1, and its output shaft is drivingly connected to the sun gear 51 to drive the sun gear 51 to rotate; wherein, the planetary bracket 31 is rotatably sleeved on the output shaft of the driving motor 52 around its axis. In this embodiment, the driving motor 52 is used to drive the sun gear 51 to rotate, and then drive each planetary gear 32 to move correspondingly, improving the transmission efficiency, saving costs, and making the overall device more compact.

[0047] It should be noted that in this embodiment, there are four groups of scraper structures 4. Correspondingly, there are four planetary gears 32, and the four planetary gears 32 mesh with the same sun gear 51.

[0048] Further, the scraper structure 4 further includes a scraper cylinder 42, and the scraper cylinder 42 is rotatably arranged around its axial direction on the rotating part 3; the scraper part 41 is a scraper blade 411, and the scraper blade 411 extends along the axial direction of the scraper cylinder 42 and is installed on the scraper cylinder 42, and a plurality of scraper blades 411 are arranged at intervals along the circumferential direction of the scraper cylinder 42. In this embodiment, the scraper part 41 is set in the form of a scraper blade 411, and the scraper blade 411 extends along the axial direction of the scraper cylinder 42 to ensure that the scraper blade 411 can achieve a better fiber scraping effect and improve the fiber scraping efficiency.

[0049] Furthermore, when the scraper blade 411 is damaged, for easy replacement, the scraper blade 411 is detachably connected to the scraper cylinder 42. In this embodiment, a plurality of mounting platforms 43 protrude from the scraper cylinder 42, and the plurality of mounting platforms 43 are arranged at intervals along the circumferential direction of the scraper cylinder 42 and correspond to the plurality of scraper blades 411 one by one. Each mounting platform 43 is inclined outward along the rotating direction of the scraper cylinder 42 around its own axial direction to form a mounting side 431, and the mounting side 431 is for mounting the scraper blade 411. In this way, the scraper blade 411 can better separate the fiber from the pineapple leaf. Specifically, a threaded hole 43a is provided on the mounting platform 43, and a mounting hole 411a is provided on the corresponding scraper blade 411. The scraper blade 411 is detachably connected to the scraper cylinder 42 by passing a fixing bolt 45 through the mounting hole 411a and the threaded hole 43a, saving costs and ensuring the installation stability of the scraper. It should be noted that in this embodiment, a plurality of mounting holes 411a are provided on the scraper blade 411, and a plurality of threaded holes 43a are also provided on the mounting platform 43. The plurality of threaded holes 43a are arranged at intervals along the axial direction of the scraper cylinder 42. Correspondingly, a plurality of fixing bolts 45 are also provided.

[0050] Furthermore, to prevent the fibers or plant bodies scraped off from the pineapple leaves by the scraper blade 411 from accumulating at the tail end of the mounting platform 43 and affecting the scraping of the fiber by the scraper blade 411, the scraper cylinder 42 includes an inner cylinder 421 and an outer cylinder 422 sleeved outside the inner cylinder 421. The inner cylinder 421 and the outer cylinder 422 are arranged at intervals to form a receiving cavity 42a, and a connecting rib 423 is connected between the inner cylinder 421 and the outer cylinder 422; wherein, the mounting platform 43 is formed on the outer cylinder 422, and a communication groove 422a is opened at the tail end of the outer cylinder 422 corresponding to the inclined direction of the mounting platform 43, and the communication groove 422a communicates with the receiving cavity 42a. In this embodiment, when fibers or plant bodies accumulate at the tail end of the mounting platform 43, the accumulated fibers or plant bodies can enter the receiving cavity 42a through the communication groove 422a to release the space at the tail end of the mounting platform 43, facilitating the scraper blade 411 to scrape off the fibers from the pineapple leaves.

[0051] Further, the scraper structure 4 further includes a scraper rotating shaft 44. The scraper rotating shaft 44 is disposed in the inner cylinder 421, and one of the inner cylinder 421 and the scraper rotating shaft 44 is provided with a limiting groove, and the other is provided with a limiting block that cooperates with the limiting groove to limit the relative rotation of the inner cylinder 421 with respect to the scraper rotating shaft 44. The limiting groove extends along the axial direction of the inner cylinder, and at least one end is open; wherein, the scraper rotating shaft 44 is rotatably disposed about its axial direction in the rotating portion 3. In this embodiment, the relative rotation of the inner cylinder 421 with respect to the scraper rotating shaft 44 is restricted by the cooperation of the limiting groove and the limiting block. At the same time, one end of the limiting groove is open, so as to facilitate the detachment of the inner cylinder 421 from the scraper rotating shaft 44, and further facilitate the operator to clean the accommodation cavity 42a. Specifically, in this embodiment, the scraper rotating shaft 44 is provided with a limiting block 441. Correspondingly, a limiting groove 421a is provided on the inner wall of the inner cylinder 421. The limiting block 441 and the limiting groove 421a extend along the axial direction of the inner cylinder 421.

[0052] Furthermore, the bast scraping device 100 further includes two limiting plates 6. The two limiting plates 6 are spaced along the axial direction of the scraper rotating shaft 44 and disposed on the frame 1; the scraper cylinder 42 is disposed between the two limiting plates 6, and the rotating portion 3 is located on one side of one limiting plate 6 away from the other limiting plate 6. In this embodiment, the axial movement of the scraper cylinder 42 along its own axis is restricted by the two limiting plates 6, so that the scraper cylinder 42 can stably scrape off the bast fibers.

[0053] Specifically, the guide plate 2 is disposed between the two limiting plates 6, and its two ends in the axial direction of the scraper rotating shaft 44 respectively abut against the two limiting plates 6. In this way, the guide gap 4a can be limited by the two limiting plates 6 at the same time, avoiding the accidental overflow of the bast fibers or pineapple leaves from the side end of the guide gap 4a. In addition, the limiting plate 6 away from the rotating portion 3 is rotatably disposed about the axial direction of the scraper rotating shaft 44 to form a limiting support plate 61, and one end of the scraper rotating shaft 44 away from the rotating portion 3 is rotatably disposed on the limiting support plate 61. In this way, the two ends of the scraper rotating shaft 44 can be respectively disposed on the rotating portion 3 and the limiting support plate 61, so that the movement of the scraper rotating shaft 44 is more stable.

[0054] Furthermore, the material guiding plate 2 has a moving stroke of approaching and departing from the scraping blade structure 4, so that the material guiding gap 4a can be adjusted; the pineapple leaf scraping device 100 further includes an adjustment driving part 7, which is arranged on the frame 1 and is drivingly connected to the material guiding plate 2 for driving the material guiding plate 2 to move. In this embodiment, the material guiding plate 2 has a moving stroke of approaching and departing from the scraping blade structure 4, so that the distance between it and the scraping blade structure 4 can be adjusted, thereby being applicable to pineapple leaves of different thicknesses and ensuring the scraping efficiency. Specifically, in this embodiment, the material guiding plate 2 is located below the scraping blade structure 4, and the adjustment driving part 7 includes a plurality of adjustment hydraulic rods 71. One ends of the plurality of adjustment hydraulic rods 71 are rotatably arranged on the frame 1, and the other ends are rotatably arranged on the material guiding plate 2, so as to realize the lifting of the material guiding plate 2 through the telescopic movement of the adjustment hydraulic rods 71, and further make the gap between the material guiding plate 2 and the scraping blade structure 4 adjustable. In addition, in this embodiment, the feeding end 4a1 of the material guiding plate 2 is higher than the discharging end 4a2, so as to facilitate the smooth entry of the pineapple leaves into the material guiding gap 4a under the drive of the scraping blade structure 4, and at the same time facilitate the discharge of the hemp fibers from the discharging end 4a2.

[0055] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A ramie scraping device, characterized in that, It includes: A frame, on which a material guiding plate and a rotating part are provided, and the rotating part can rotate around its own axis; Multiple groups of scraper structures are arranged on the rotating part and are spaced along the circumferential direction of the rotating part, and are located on one side of the material guiding plate, so as to form a material guiding gap with the material guiding plate. The material guiding gap has a feeding end and a discharging end in the circumferential direction of the rotating part. Each scraper structure can rotate around its own axis, and its axial direction is the same as the axial direction of the rotating part. Among them, multiple scraper parts are arranged at intervals along the circumferential direction of each scraper structure; and, A driving structure is arranged on the frame and is respectively drivingly connected to the rotating part and each scraper structure, and is used to drive the rotating part to rotate around its own axis, so that when the multiple groups of scraper structures rotate following the rotating part, the material located in the material guiding gap can be driven to move from the feeding end to the discharging end, and is used to drive each scraper structure to rotate around its own axis, so that when the multiple scraper parts of each group rotate following the corresponding scraper structure, the hemp fibers of the material located in the material guiding gap can be scraped off.

2. The scutching device according to claim 1, characterized in that, A fixed gear ring is arranged on the frame. The rotating part includes a planetary bracket, and the planetary bracket is rotatably arranged on the frame around its own axis and is located inside the fixed gear ring, and multiple planetary gears are arranged on it. The multiple planetary gears correspond to multiple groups of scraper structures one by one. Each planetary gear is connected to the corresponding scraper structure and is rotatably connected to the planetary bracket, and is engaged with the fixed gear ring; The driving structure is engaged with each planetary gear to drive each planetary gear to rotate.

3. The scutching device according to claim 2, characterized in that, The driving structure includes a sun gear and a driving motor. The sun gear is located between the multiple planetary gears and is engaged with each planetary gear. The driving motor is arranged on the frame, and its output shaft is drivingly connected to the sun gear to drive the sun gear to rotate; Among them, the planetary bracket is rotatably sleeved on the output shaft of the driving motor around its axis.

4. The decorticating device according to claim 1, characterized in that, The scraper structure further includes a scraper cylinder, and the scraper cylinder is rotatably arranged on the rotating part around its axis; The scraper part is a scraper blade, and the scraper blade extends along the axial direction of the scraper cylinder and is installed on the scraper cylinder, and multiple scraper blades are arranged at intervals along the circumferential direction of the scraper cylinder.

5. The decorticating device according to claim 4, characterized in that, The scraper blade is detachably connected to the scraper cylinder; and / or, Multiple mounting platforms are convexly arranged on the scraper cylinder. The multiple mounting platforms are spaced along the circumferential direction of the scraper cylinder and correspond to the multiple scraper blades one by one. Each mounting platform is inclined outward along the rotating direction of the scraper cylinder around its own axis to form a mounting side, and the mounting side is for mounting the scraper blade.

6. The decorticating device according to claim 5, characterized in that, The scraper cylinder includes an inner cylinder and an outer cylinder sleeved outside the inner cylinder. The inner cylinder and the outer cylinder are arranged at intervals to form an accommodating cavity, and connecting ribs are connected between the inner cylinder and the outer cylinder; Among them, the mounting platform is formed on the outer cylinder, and a communication groove is opened at the tail end of the outer cylinder corresponding to the inclined direction of the mounting platform, and the communication groove communicates with the accommodating cavity.

7. The decorticating device according to claim 6, wherein The scraper structure further includes a scraper rotating shaft, which is arranged in the inner cylinder, and one of the inner cylinder and the scraper rotating shaft is provided with a limiting groove, and the other is provided with a limiting block that cooperates with the limiting groove to limit the relative rotation of the inner cylinder with respect to the scraper rotating shaft. The limiting groove extends along the axial direction of the inner cylinder, and at least one end is open; Wherein, the scraper rotating shaft is rotatably arranged around its axial direction in the rotating part.

8. The decorticating device according to claim 7, characterized in that, The hemp scraping device further includes two limiting plates, and the two limiting plates are arranged on the frame at intervals along the axial direction of the scraper rotating shaft; The scraper cylinder is arranged between the two limiting plates, and the rotating part is located on one side of one limiting plate away from the other limiting plate.

9. The scutching device according to claim 8, wherein The material guiding plate is located between the two limiting plates, and both ends of the material guiding plate in the axial direction of the scraper rotating shaft are respectively abutted against the two limiting plates; and / or, The limiting plate away from the rotating part is rotatably arranged around the axial direction of the scraper rotating shaft to form a limiting support plate, and one end of the scraper rotating shaft away from the rotating part is rotatably arranged on the limiting support plate.

10. The scutching device according to claim 1, characterized in that, The material guiding plate has a moving stroke close to and away from the scraper structure, so that the material guiding gap can be adjusted; The hemp scraping device further includes an adjustment driving part, which is arranged on the frame and is drivingly connected with the material guiding plate to drive the material guiding plate to move.

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