A powdery degradable nanofibrillated cellulose drying device

Abstract

The present invention relates to the field of cellulose production technology, and in particular to a powdered degradable nano bacterial cellulose drying device, comprising an outer cylinder, the left side wall of which is fixedly connected to a motor, a raw material equalizing mechanism provided in the inner center of the outer cylinder, and a crushing and guiding mechanism provided on the inner top wall of the outer cylinder; the raw material equalizing mechanism comprises an inner cylinder fixedly connected to the output end of the motor, the other side wall of the inner cylinder being rotatably mounted on the right inner wall of the outer cylinder, and a plurality of sets of track rings being fixedly mounted inside the inner cylinder. The present invention realizes equal distribution and drying of the powdered cellulose raw material through the raw material equalizing mechanism, and at the same time, the motor drives the inner cylinder to continuously rotate, so that the spherical hammer milling element continuously slides along the track ring, so that the cellulose powder raw material continuously falls along the rotation direction of the inner cylinder, thereby achieving the effect of continuously hammering the powdered cellulose on the bottom wall of the spherical hammer milling element, and effectively improving the drying efficiency of the bacterial cellulose.

Description

Technical Field

[0001] The invention relates to the technical field of cellulose production, in particular to a drying device for powdery degradable nano bacterial cellulose. Background Art

[0002] Bacterial cellulose refers to the general term for cellulose synthesized by microorganisms such as Agrobacterium and Rhizobium. Bacterial cellulose has high biocompatibility and good biodegradability. Powdered bacterial cellulose is a form of cellulose and is widely used in pharmaceutical and food fields. In the preparation process of powdered bacterial cellulose, in order to obtain fluffy cellulose powder, the powdered cellulose needs to be dried.

[0003] Existing powdered cellulose drying devices mostly add powdered cellulose raw materials directly into the drying cylinder when in use, and achieve sufficient drying of the powdered cellulose by continuously stirring the raw materials. However, during the actual drying process, moisture is inevitably present, which causes the powdered raw materials to easily clump together and form lumps. As a result, the powder in the center of the agglomerate cannot be completely dried, seriously affecting the drying effect of the powdered cellulose. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a drying device for powdered degradable nano bacterial cellulose, which solves the technical problem that powdered cellulose is easily agglomerated due to water vapor accumulation during the drying process.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a drying device for powdered biodegradable nano-bacterial cellulose, comprising an outer cylinder, a motor fixedly connected to the left side wall of the outer cylinder, a raw material equalization mechanism provided at the inner center of the outer cylinder, and a material crushing and guiding mechanism provided on the inner top wall of the outer cylinder;

[0006] The raw material equal distribution mechanism includes an inner cylinder fixedly connected to the output end of the motor, and the other side wall of the inner cylinder is rotatably mounted on the right inner wall of the outer cylinder. A plurality of groups of track rings are fixedly mounted inside the inner cylinder, and the plurality of groups of track rings are equidistantly arranged along the axial direction of the outer cylinder. A plurality of spherical hammer milling parts are slidably mounted inside each group of track rings, and the spherical hammer milling parts are slidably clamped inside the track rings. A center collar is provided on the inner side of the track rings, and the spherical hammer milling parts are sleeved on the center collar. The side walls of adjacent spherical hammer milling parts are fixedly connected with elastic connecting ribs, and the elastic connecting ribs are arranged on the outer side of the center collar.

[0007] Preferably, the crushing and guiding mechanism includes an arc-shaped loading plate fixedly connected to the inner bottom wall of the outer cylinder, a plurality of arc-shaped loading grooves are opened on the inner side of the arc-shaped loading plate, and the plurality of arc-shaped loading grooves are equidistantly arranged along the axial direction of the outer cylinder, and each arc-shaped loading groove is correspondingly arranged directly below the track ring, and a plurality of semicircular striking blocks are symmetrically slidably installed on the left and right inner walls of the arc-shaped loading groove;

[0008] The semicircular striking blocks are all arranged at equal distances along the radial direction of the arc-shaped material loading trough, the radius of the semicircular striking blocks is half of the width of the arc-shaped material loading trough, and the width of the arc-shaped material loading trough is greater than the diameter of the spherical hammer grinding member;

[0009] A material stripping plate is axially slidably installed on the top of the arc-shaped loading plate, a plurality of through holes are opened on the inner top wall of the arc-shaped loading trough, a vibration spring is fixedly connected to the inner side of the semicircular striking block, the other end of the vibration spring is fixedly connected to the limit bar, and the bottom end of the material stripping plate is fixedly connected to the limit bar.

[0010] Preferably, the track ring is configured as an inner and outer double-layer annular track, the spacing between adjacent track rings is smaller than the diameter of the spherical hammer mill, and the length of the spherical hammer mill extending out of the track ring is one-fourth of the diameter of the spherical hammer mill.

[0011] Preferably, the limiting strip and the material-diverting plate are both made of elastic material, the top of the material-diverting plate is a conical protrusion, and the two side walls of the material-diverting plate are wedge-shaped surfaces.

[0012] Preferably, a feed hopper is provided through the top of the outer cylinder, and a discharge hopper is fixedly installed at the bottom of the arc-shaped loading plate.

[0013] Preferably, a plurality of fixing rods are provided on the top of the inner wall of the outer cylinder, and the fixing rods are symmetrically arranged on both sides of the feed hopper. A connecting arm is rotatably mounted on the lower end of the fixing rod, and a limiting roller is rotatably mounted on the bottom of the connecting arm.

[0014] The outer side of the fixed rod is sleeved with a fixed sleeve, and a return spring is provided inside the fixed sleeve. One end of the return spring is fixedly connected to the side wall of the connecting arm, and the other end of the return spring is fixedly connected to the inner wall of the outer cylinder.

[0015] The right side wall of the outer cylinder is fixedly connected with an electric heating control box, and a plurality of electric heating rods are arranged inside the electric heating control box. The electric heating rods all extend through the right side wall of the inner cylinder and are located just above the arc-shaped loading plate.

[0016] By means of the above technical solution, the present invention provides a drying device for powdered degradable nano bacterial cellulose, which has at least the following beneficial effects:

[0017] 1. The present invention realizes the even distribution and drying of the powdered cellulose raw material through the raw material even distribution mechanism. At the same time, the motor drives the inner cylinder to rotate continuously, so that the spherical hammer mill continuously slides along the track ring, and the cellulose powder raw material is continuously scattered along the rotation direction of the inner cylinder, thereby achieving the effect of continuous hammering of the powdered cellulose by the bottom wall of the spherical hammer mill, effectively improving the drying efficiency of the bacterial cellulose.

[0018] 2. The present invention achieves full crushing of the agglomerated powder during the drying process through a crushing and guiding mechanism. At the same time, as the spherical hammer grinding piece continuously slides along the inside of the arc-shaped loading trough, it continuously contacts the side wall of the semicircular striking block, thereby driving the full crushing of the agglomerated powder inside the arc-shaped loading trough, effectively reducing the powder aggregation during the drying process and further improving the drying efficiency.

[0019] 3. The present invention achieves even distribution of the powdered raw materials by the rotation of the inner cylinder. At the same time, the spherical hammer mill continuously slides along the center of the bottom wall of the central sleeve under the action of its own gravity, thereby driving the elastic connecting ribs at the bottom to undergo varying degrees of extrusion deformation. The cellulose powder is further crushed by the lifting deformation of the elastic connecting ribs at the bottom, thereby achieving a second crushing of the aggregated powder, thereby further improving the drying efficiency.

[0020] 4. The present invention realizes evenly distributing the powdered raw materials by rotating the inner cylinder. At the same time, the spherical hammer grinding element slides along the center of the bottom wall of the central sleeve under its own gravity, thereby driving the elastic connecting ribs on the top to expand, so that the powdered raw materials slide smoothly along the top, thereby increasing the discharge space and avoiding blockage of the powdered cellulose discharge.

[0021] 5. The present invention crushes the agglomerated powder by contacting the spherical hammer grinding element with the semicircular striking block. At the same time, the semicircular striking block is continuously slid and restored to drive the stripping plate to continuously shake along both sides, thereby achieving the accumulation of powder on the top of the arc-shaped loading plate. During the continuous shaking of the stripping plate, the accumulated powder is quickly pushed into the arc-shaped loading troughs on both sides, achieving rapid material discharge and effectively improving the powder discharge speed.

[0022] 6. The present invention drives the powder to be evenly distributed along the longitudinal direction by rotating the inner cylinder, and cooperates with the limiting roller on the top of the outer cylinder to scrape and discharge the powder attached to the side wall of the spherical hammer mill. At the same time, the inner cylinder is continuously rotated to drive the powder to contact the limiting roller again during lifting, so that the dried powder is scraped and falls, effectively reducing the powder splashing phenomenon during the drying process of cellulose powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal sectional three-dimensional structure of the outer cylinder of the present invention;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the raw material equal distribution mechanism of the present invention;

[0027] Figure 4 This is a left-side structural schematic diagram of the initial state of the raw material equal distribution mechanism of the present invention;

[0028] Figure 5 This is a left-side structural schematic diagram of the internal deformation state of the raw material equalization mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the raw material equal distribution mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the three-dimensional structure of the material crushing and guiding mechanism of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the crushing and guiding mechanism of the present invention from a top view;

[0032] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the internal structure at center A;

[0033] Figure 10 This is a schematic diagram of the internal left-side structure of the present invention;

[0034] Figure 11 For the present invention Figure 10 A magnified schematic diagram of the structure at point B in the middle.

[0035] In the figure: 1. outer cylinder; 2. motor; 3. feed hopper; 4. electric heating control box; 5. discharge hopper; 6. raw material equalization mechanism; 60. inner cylinder; 61. track ring; 62. spherical hammer grinding member; 63. center collar; 64. elastic connecting rib; 7. crushing and guiding mechanism; 70. arc-shaped loading plate; 71. arc-shaped loading trough; 72. semicircular striking block; 73. material stripping plate; 74. through hole; 75. vibration spring; 76. limit strip; 8. electric heating rod; 9. fixing rod; 10. connecting arm; 11. limit roller; 12. fixing sleeve; 13. reset spring. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1

[0038] Please refer to Figure 1-Figure 3 A powdered biodegradable nano bacterial cellulose drying device includes an outer cylinder 1, the left side wall of the outer cylinder 1 is fixedly connected to a motor 2, the inner center of the outer cylinder 1 is provided with a raw material equalizing mechanism 6, and the inner top wall of the outer cylinder 1 is provided with a crushing and guiding mechanism 7. Before the powdered cellulose drying begins, the motor 2 is first turned on to drive the raw material equalizing mechanism 6 to work, and then the cellulose raw material to be dried is added through the feed hopper 3. While the powdered raw material is evenly divided and discharged by the rotation of the inner cylinder 60, the spherical hammer grinding member 62 slides along the center of the bottom wall of the center ring 63 under its own gravity, thereby driving the elastic connecting rib 64 on the top to expand, so that The powdered raw materials slide smoothly along the top, thereby increasing the material discharge space and avoiding the blockage of the powdered cellulose. As the spherical hammer grinding member 62 inside the raw material equalizing mechanism 6 continuously slides to the inside of the arc-shaped loading trough 71 inside the crushing and guiding mechanism 7, the crushing and guiding mechanism 7 fully crushes the powder agglomerated during the drying process. At the same time, as the spherical hammer grinding member 62 continuously slides along the inside of the arc-shaped loading trough 71, it continuously contacts the side wall of the semicircular striking block 72, driving the powder agglomerated inside the arc-shaped loading trough 71 to be fully crushed, effectively reducing the aggregation of powder during the drying process and further improving the drying efficiency.

[0039] The raw material evenly distributing mechanism 6 includes an inner cylinder 60 fixedly connected to the output end of the motor 2, and the other side wall of the inner cylinder 60 is rotatably mounted on the right inner wall of the outer cylinder 1. A plurality of track rings 61 are fixedly mounted inside the inner cylinder 60. The plurality of track rings 61 are equidistantly arranged along the axial direction of the outer cylinder 1. A plurality of spherical hammer milling pieces 62 are slidably mounted inside each track ring 61. The spherical hammer milling pieces 62 are slidably clamped inside the track ring 61. A center collar 63 is provided on the inner side of the track ring 61. The spherical hammer milling pieces 62 are sleeved on the center collar 63. The side walls of the adjacent spherical hammer milling members 62 are fixedly connected with elastic connecting ribs 64. When the inner cylinder 60 rotates to evenly divide the powdered raw materials, the motor 2 always keeps driving the inner cylinder 60 to rotate slowly during the drying process. During the rotation process, the spherical hammer milling members 62 continuously slide along the center of the bottom wall of the central sleeve 63 due to their own gravity, thereby driving the elastic connecting ribs 64 at the bottom to undergo different degrees of extrusion deformation and the elastic connecting ribs 64 at the top to undergo stretching. The elastic connecting ribs 64 at the bottom are deformed by the lifting deformation (such as Figure 5), further crushing the cellulose powder, achieving re-crushing of the aggregated powder, and further improving the drying efficiency. The elastic connecting rib 64 is arranged on the outside of the central sleeve 63. The material contacts the rotating inner cylinder 60 during the falling process, achieving even distribution of the material. The raw material evenly distributing mechanism 6 is used to achieve even distribution and drying of the powdered cellulose raw material. At the same time, the motor 2 drives the inner cylinder 60 to rotate continuously, so that the spherical hammer grinding member 62 continuously slides along the track ring 61, and the cellulose powder raw material is continuously scattered along the rotation direction of the inner cylinder 60, thereby achieving the effect of continuously hammering the powdered cellulose on the bottom wall of the spherical hammer grinding member 62, effectively improving the drying efficiency of the bacterial cellulose.

[0040] Example 2

[0041] Please refer to Figure 7-Figure 9 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0042] The crushing and guiding mechanism 7 includes an arc-shaped loading plate 70 fixedly connected to the inner bottom wall of the outer cylinder 1, and a plurality of arc-shaped loading grooves 71 are provided on the inner side of the arc-shaped loading plate 70. The plurality of arc-shaped loading grooves 71 are equidistantly arranged along the axial direction of the outer cylinder 1, and each arc-shaped loading groove 71 is correspondingly arranged directly below the track ring 61. The left and right inner walls of the arc-shaped loading groove 71 are symmetrically and slidably mounted with a plurality of semicircular striking blocks 72. The crushing and guiding mechanism 7 is used to fully crush the agglomerated powder during the drying process. At the same time, the spherical hammer grinding member 62 continuously slides along the inside of the arc-shaped loading groove 71, and continuously contacts the side walls of the semicircular striking blocks 72, thereby driving the full crushing of the agglomerated powder inside the arc-shaped loading groove 71, effectively reducing the aggregation of powder during the drying process, and further improving the drying efficiency.

[0043] As a preferred technical solution of this embodiment, the semicircular striking blocks 72 are all arranged equidistantly along the radial direction of the arc-shaped loading groove 71. The radius of the semicircular striking blocks 72 is half the width of the arc-shaped loading groove 71. This ensures that when the spherical hammer mill 62 contacts the side walls of the semicircular striking blocks 72, the semicircular striking blocks 72 on both sides slide with the same amplitude. The width of the arc-shaped loading groove 71 is greater than the diameter of the spherical hammer mill 62, ensuring that the spherical hammer mill 62 can slide along the interior of the arc-shaped loading groove 71, thereby achieving contact between the side walls of the spherical hammer mill 62 and the semicircular striking blocks 72.

[0044] As the preferred technical solution of this embodiment, a material stripping plate 73 is installed on the top of the arc-shaped material loading plate 70 in an axially sliding manner, and a plurality of through holes 74 are opened on the inner top wall of the arc-shaped material loading groove 71. The inner sides of the semicircular striking blocks 72 are fixedly connected to vibration springs 75, and the other ends of the vibration springs 75 are fixedly connected to the limit strips 76. The bottom end of the material stripping plate 73 is fixedly connected to the limit strips 76. During the continuous rolling of the spherical hammer mill 62 along the inside of the arc-shaped material loading groove 71, when the outer wall of the spherical hammer mill 62 contacts the inner wall of the semicircular striking block 72, the semicircular striking block 72 is driven to slide along the inside of the arc-shaped material loading groove 71, thereby compressing the vibration spring 75. As the semicircular striking blocks 72 slide alternately with the rotation of the spherical hammer mill 62, the semicircular striking block 72 is driven to slide along the inside of the arc-shaped material loading groove 71, thereby compressing the vibration spring 75. The limiting bars 76 slide synchronously, so that the limiting bars 76 vibrate back and forth continuously, thereby achieving the effect of material discharging. The spherical hammer grinding piece 62 contacts the semicircular striking block 72 to crush the agglomerated powder. At the same time, the semicircular striking block 72 is continuously slid and recovered, which drives the material discharging plate 73 to shake continuously along both sides, thereby achieving the accumulation of powder on the top of the arc-shaped loading plate 70. During the continuous shaking of the material discharging plate 73, the accumulated powder is quickly pushed into the arc-shaped loading grooves 71 on both sides, achieving rapid material discharging, effectively improving the powder discharging speed. A feed hopper 3 is provided through the top of the outer cylinder 1, and a discharge hopper 5 is fixedly installed at the bottom of the arc-shaped loading plate 70. After the material discharging is completed, the crushed powder material falls along the through hole 74 and is finally discharged along the discharge hopper 5.

[0045] Example 3

[0046] Please refer to Figure 4-Figure 5 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0047] The track ring 61 is configured as an inner and outer double-layer annular track. The spacing between adjacent track rings 61 is less than the diameter of the spherical hammer mill 62. The length of the spherical hammer mill 62 extending outward from the track ring 61 is one-fourth of the diameter of the spherical hammer mill 62. This ensures that the spherical hammer mill 62 can slide along the inside of the track ring 61 as the inner cylinder 60 rotates, and that its outer side extends outward from the track ring 61, so that the bottom wall of the spherical hammer mill 62 contacts the raw material to achieve hammer crushing, and can contact the semicircular striking block 72.

[0048] As the preferred technical solution of this embodiment, the limit bars 76 and the material-dispensing plates 73 are all made of elastic material to ensure that when each semicircular striking block 72 moves, the limit bars 76 are driven to slide back and forth to prevent the limit bars 76 from rigid fracture. The top of the material-dispensing plate 73 is set as a conical protrusion, and the two side walls of the material-dispensing plate 73 are set as wedge-shaped surfaces to reduce the powdered material carried on the surface of the material-dispensing plate 73, and as the material-dispensing plate 73 continues to swing, the material slides quickly into the inside of the arc-shaped loading trough 71.

[0049] Example 4

[0050] Please refer to Figure 10-11 This embodiment is basically the same as the first embodiment. This embodiment is made on the basis of the first embodiment and has the same beneficial effects as the first embodiment. The same parts can be referred to each other and will not be described in detail here.

[0051] A plurality of fixed rods 9 are provided on the top of the inner wall of the outer cylinder 1. The fixed rods 9 are symmetrically arranged on both sides of the feed hopper 3. A connecting arm 10 is rotatably installed at the lower end of the fixed rod 9, and a limiting roller 11 is rotatably installed at the bottom of the connecting arm 10; a fixed sleeve 12 is sleeved on the outer side of the fixed rod 9, and a return spring 13 is provided inside the fixed sleeve 12. One section of the return spring 13 is fixedly connected to the side wall of the connecting arm 10, and the other end of the return spring 13 is fixedly connected to the inner wall of the outer cylinder 1. During the falling process of the material, some powder raw materials adhere to the spherical hammer mill 62, and the spherical hammer mill 62 alternately contacts with multiple limiting rollers 11 during the rotation process. , the powdered raw materials on the surface of the spherical hammer mill 62 are scraped off by the limiting roller 11. As the spherical hammer mill 62 continues to rotate, the material is driven to be lifted and contacts the multiple limiting rollers 11 on the other side again, reducing the splash of powder. The powder is evenly distributed along the longitudinal direction of the raw materials through the rotation of the inner cylinder 60, and the limiting roller 11 at the top of the outer cylinder 1 is cooperated to scrape off the powder attached to the side wall of the spherical hammer mill 62. At the same time, the inner cylinder 60 is driven to contact the limiting roller 11 again when it is lifted, so that the dried powder is scraped off and falls, effectively reducing the powder splashing phenomenon during the drying process of cellulose powder.

[0052] As the preferred technical solution of this embodiment, the right side wall of the outer cylinder 1 is fixedly connected to an electric heating control box 4, and a plurality of electric heating rods 8 are provided inside the electric heating control box 4. The electric heating rods 8 all extend through the right side wall of the inner cylinder 60. The electric heating rods 8 are located directly above the arc-shaped loading plate 70, so that the high temperature environment generated by the electric heating rods 8 allows the powdered material at the bottom to be fully dried.

[0053] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection are not explained in detail in the present invention.

[0054] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0055] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to in detail. For the above embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For relevant parts, please refer to the partial description of the method embodiments.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A drying device for powdered degradable nano bacterial cellulose, comprising an outer cylinder (1), characterized in that: The left side wall of the outer cylinder (1) is fixedly connected to a motor (2), the inner center of the outer cylinder (1) is provided with a raw material equalizing mechanism (6) for achieving equal distribution and drying of the powdered cellulose raw material, and the inner bottom wall of the outer cylinder (1) is provided with a crushing and guiding mechanism (7) for achieving sufficient crushing of the agglomerated powder during the drying process; The raw material equalization mechanism (6) includes an inner cylinder (60) fixedly connected to the output end of the motor (2), and the cellulose raw material to be dried is added through the feed hopper (3). The powdered raw material is evenly distributed and discharged by rotating the inner cylinder (60). The other side wall of the inner cylinder (60) is rotatably mounted on the right inner wall of the outer cylinder (1). The inner cylinder (60) is fixedly mounted with multiple groups of track rings (61). The multiple groups of track rings (61) are equidistantly arranged along the axial direction of the outer cylinder (1). A plurality of spherical hammer milling members (62) are slidably mounted inside the track ring (61), and the spherical hammer milling members (62) are slidably clamped inside the track ring (61). A central sleeve (63) is provided on the inner side of the track ring (61), and the spherical hammer milling members (62) are sleeved on the central sleeve (63). The side walls of adjacent spherical hammer milling members (62) are fixedly connected with elastic connecting ribs (64), and the elastic connecting ribs (64) are arranged on the outer side of the central sleeve (63); The crushing and guiding mechanism (7) includes an arc-shaped loading plate (70) fixedly connected to the inner bottom wall of the outer cylinder (1), and a plurality of arc-shaped loading grooves (71) are provided on the inner side of the arc-shaped loading plate (70). The plurality of arc-shaped loading grooves (71) are equidistantly arranged along the axial direction of the outer cylinder (1), and each arc-shaped loading groove (71) is correspondingly arranged directly below the track ring (61). A plurality of semicircular striking blocks (72) are symmetrically and slidably mounted on the left and right inner walls of the arc-shaped loading groove (71); A feed hopper (3) is provided through the top of the outer cylinder (1), and a discharge hopper (5) is fixedly installed at the bottom of the arc-shaped loading plate (70).

2. The drying device for powdered degradable nano bacterial cellulose according to claim 1, characterized in that: A material-diverting plate (73) is axially slidably mounted on the top of the arc-shaped material-carrying plate (70), a plurality of through holes (74) are provided on the inner top wall of the arc-shaped material-carrying trough (71), a vibration spring (75) is fixedly connected to the inner side of each of the semicircular striking blocks (72), the other end of the vibration spring (75) is fixedly connected to a limit bar (76), and the bottom end of the material-diverting plate (73) is fixedly connected to the limit bar (76).

3. The drying device for powdered degradable nano bacterial cellulose according to claim 1, characterized in that: The semicircular striking blocks (72) are all arranged equidistantly along the circumference of the arc-shaped loading groove (71), and the radius of the semicircular striking blocks (72) is half the width of the arc-shaped loading groove (71). The width of the arc-shaped loading groove (71) is greater than the diameter of the spherical hammer mill (62).

4. The drying device for powdered degradable nano bacterial cellulose according to claim 1, characterized in that: The track ring (61) is configured as an inner and outer double-layer annular track, the spacing between adjacent track rings (61) is smaller than the diameter of the spherical hammer mill (62), and the length of the spherical hammer mill (62) extending outside the track ring (61) is one-quarter of the diameter of the spherical hammer mill (62).

5. The drying device for powdered degradable nano bacterial cellulose according to claim 2, characterized in that: The limiting strip (76) and the material-diverting plate (73) are both made of elastic material. The top of the material-diverting plate (73) is provided as a conical protrusion, and the two side walls of the material-diverting plate (73) are provided as wedge-shaped surfaces.

6. The drying device for powdered degradable nano bacterial cellulose according to claim 1, characterized in that: A plurality of fixing rods (9) are provided on the top of the inner wall of the outer cylinder (1), and the fixing rods (9) are symmetrically arranged on both sides of the feed hopper (3). A connecting arm (10) is rotatably mounted on the lower end of the fixing rod (9), and a limiting roller (11) is rotatably mounted on the bottom of the connecting arm (10).

7. The drying device for powdered degradable nano bacterial cellulose according to claim 6, characterized in that: A fixing sleeve (12) is sleeved on the outer side of the fixing rod (9), and a return spring (13) is provided inside the fixing sleeve (12). One end of the return spring (13) is fixedly connected to the side wall of the connecting arm (10), and the other end of the return spring (13) is fixedly connected to the inner wall of the outer cylinder (1).

8. The drying device for powdered degradable nano bacterial cellulose according to claim 1, characterized in that: The right side wall of the outer cylinder (1) is fixedly connected to an electric heating control box (4), and a plurality of electric heating rods (8) are provided inside the electric heating control box (4). The electric heating rods (8) all extend through the right side wall of the inner cylinder (60), and the electric heating rods (8) are located directly above the arc-shaped material loading plate (70).

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