Straw recycling and utilization crushing device

Abstract

The application relates to the straw recycling field and discloses a straw recycling and utilization crushing device, which comprises a cutting box and a discharge box, a motor is installed at the bottom of the discharge box, a main cutting assembly is further arranged, the main cutting assembly comprises a rotating shaft one fixedly installed on the output shaft of the motor, a rotating shaft two is movably sleeved with the outer surface of the rotating shaft one, a cutter one and a cutter two are fixedly installed at the top of the outer surfaces of the rotating shaft one and the rotating shaft two respectively, and a coaxial reverse module is transmissionally installed between the rotating shaft one and the rotating shaft two. The device drives the supporting ring one and the clutch sleeve upwards through the telescopic rod. When the clutch sleeve and the transmission sleeve abut and generate friction force, the power of the rotating shaft two can be transmitted to the transmission sleeve and the fixed cylinder, the fixed cylinder and the cutter three are driven to rotate, the cutter three is "flung" to the "circular ring area" through centrifugal force, the materials passing through the area are subjected to secondary cutting, the design greatly improves the size interval of the material crushing, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of straw recycling, and in particular to a straw recycling and utilization crushing device. BACKGROUND

[0002] Straw recycling is generally mainly direct crushing, and the recycling efficiency of direct crushing is the highest, which not only avoids the environmental impact caused by direct burning of straw, but also can use the crushed material as livestock feed or as fertilizer in the field. Therefore, the straw recycling and utilization crushing device in the prior art is mainly used for crushing straw. In some fields, the straw needs to be briquetted, and the straw needs to be crushed before the straw is briquetted to facilitate subsequent straw briquetting operation. The straw recycling and utilization crushing device in the prior art is mainly composed of multiple cutter groups, and the straw is cut by high-speed rotation of the cutter to achieve crushing. However, the simple cutting structure has poor practicability, mainly manifested in that: in order to ensure the cutting effect, the number of cutters is often large, which undoubtedly increases the complexity of the device (increases the motor load), and the structure cannot control the degree of cutting and crushing of the material after being shaped, and has certain limitations for use scenes with different crushing degree material requirements. Therefore, the application is dedicated to improving the internal structure of the straw recycling and utilization crushing device and enabling it to adjust the size of the crushed straw. SUMMARY

[0003] The application provides a straw recycling and utilization crushing device, which has the advantages of high practicability and solves the problem of poor practicability.

[0004] To achieve the above-mentioned purpose, the application adopts the following technical scheme: a straw recycling and utilization crushing device, comprising a cutting box and a discharge box, the bottom of the discharge box is provided with a motor, and further comprising:

[0005] The main cutting assembly comprises a rotating shaft one fixedly installed on the output shaft of the motor, the outer surface of the rotating shaft one is movably sleeved with a rotating shaft two, the top ends of the outer surfaces of the rotating shaft one and the rotating shaft two are fixedly installed with a cutter one and a cutter two respectively, and a coaxial reverse rotation module is transmissionally installed between the rotating shaft one and the rotating shaft two.

[0006] The auxiliary cutting assembly comprises a support seat installed on the inner wall bottom of the cutting box, the top of the support seat is provided with an extension cutting module, and the outer surface of the rotating shaft two is fixedly installed with a disperser located above the extension cutting module.

[0007] The telescopic cutting module comprises two supporting rings fixedly installed on the top of the support base, a telescopic rod, a transmission sleeve, a clutch sleeve, a plurality of fixed cylinders, a telescopic column and a cutter three.

[0008] Preferably, the coaxial reverse module comprises a dust cover fixedly installed on the bottom of the support base, the rotating shaft one penetrates through the bottom of the dust cover, the top of the inner wall of the dust cover is fixedly connected with two groups of bevel gears four, the outer surface of the rotating shaft one and the bottom of the outer surface of the rotating shaft two are fixedly installed with bevel gears three and bevel gears two in the dust cover respectively, and the bevel gears three and the bevel gears two are engaged with the bevel gears four.

[0009] Preferably, a shunt assembly is installed on the middle of the outer surface of the cutting box, the shunt assembly comprises a shell installed on the outer surface of the cutting box and a plurality of supporting shafts rotatably installed on the inner wall of the cutting box, one end of the supporting shaft is fixedly connected with a shunt plate in the inner cavity of the cutting box, the other end of the supporting shaft is installed with a bevel gear one, the bevel gear one is engaged with an external gear ring, and the inner wall of the shell is rotatably installed with a worm.

[0010] Preferably, the shunt assembly further comprises a limiting ring fixedly connected to the outer surface of the supporting shaft, the outer surface of the cutting box is fixedly connected with a plurality of fixed rings movably sleeved on the outer surface of the supporting shaft, and the limiting ring is located outside the fixed ring and abuts against the fixed ring.

[0011] Preferably, the number of the shunt plates is at least eight, and a plurality of the shunt plates are circumferentially and equidistantly distributed in the inner cavity of the cutting box, and the initial state of the shunt plates is vertical distribution.

[0012] Preferably, the shaft section of the telescopic column is in the shape of "T", the spring is movably sleeved on the outer surface of the telescopic column, and the two ends of the spring are elastically connected with the telescopic column and the fixed cylinder respectively.

[0013] Preferably, the clutch sleeve is located inside the transmission sleeve, the contact surfaces of the clutch sleeve and the transmission sleeve are conical and inclined, and the clutch sleeve and the transmission sleeve are both made of high-friction coefficient material.

[0014] Preferably, the bottom of the outer surface of the rotating shaft one is fixedly connected with a fan blade in the inner cavity of the discharging box, and the side of the discharging box is provided with a discharging port.

[0015] Preferably, the shaft section of the disperser is in the shape of "human", and the disperser can cover the outer end of the telescopic cutting module.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This device has been redesigned, greatly improving its practicality. It can crush materials into different sizes to meet various application needs. To achieve this, the device uses a coaxial reversal module to enable the inner and outer rotating shafts 1 and 2 to rotate at the same speed in the same direction. This drives cutter 1 and cutter 2 to rotate and cut in opposite directions, significantly improving the crushing efficiency. At the same time, a telescopic cutting module located between the disperser and the support base enables a second selective cutting of the material. A support ring 2 rotatably supports the transmission sleeve and the fixed cylinder. The telescopic rod drives the support ring 1 and the clutch sleeve upward. When the clutch sleeve and the transmission sleeve come into contact and generate friction, the power of the rotating shaft 2 is transmitted to the transmission sleeve and the fixed cylinder, driving the fixed cylinder and cutter 3 to rotate. Simultaneously, the centrifugal force generated "throws" cutter 3 into the "circular area," thus performing a second cutting on the material passing through this area. This design greatly expands the range of material crushing sizes and is highly practical.

[0018] 2. This device features a coaxial reversing module at the bottom of the support base. This module enables the coaxial reversal of shaft one and shaft two. A dust cover at the bottom of the support base encloses the entire module, providing dust protection. Helical gear three is installed on the outer surface of shaft one, and helical gear two is installed on the outer surface of shaft two. Two sets of helical gear four are installed at the bottom of the support base, meshing perpendicular to helical gears two and three. This achieves the coaxial reversal of shaft one and shaft two, driving the cutters one and two, respectively, mounted on the outer surfaces of shaft one and shaft two, to reverse at high speed. This rapidly cuts the material. Because cutters one and two reverse, their rotational clearance is smaller, significantly enhancing the cutting and crushing effect on the material and reducing the load on the motor.

[0019] 3. This device is also equipped with a diversion component, which slows down the downward movement of the material after the first cut by cutter one and cutter two. Working in conjunction with the disperser, it "throws" the material towards the "annular area" between the inner wall of the cutting box and the bottom of the disperser. Multiple sets of support shafts and diversion plates, rotatably mounted on the inner wall of the cutting box, divert the material after cutting. When the telescopic cutting module begins cutting, the diverted material enhances the crushing effect of the telescopic cutting module. By rotating the worm gear, the outer gear ring rotates, which in turn rotates the helical gear one, the support shafts, and the diversion plate. This causes the diversion plate to tilt and reduce the effective area through which the material passes, thus slowing down the material's passage speed. When the material passes through the "annular area" of the telescopic cutting module at a slower speed, the cutting and crushing effect is enhanced. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0021] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0022] Figure 1 This is a schematic diagram of the internal structure of the cutting box, the discharge box, and the outer shell of the present invention;

[0023] Figure 2 This is a frontal perspective view of the overall structure of the present invention;

[0024] Figure 3 This is a front sectional view of the overall structure of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A;

[0026] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B;

[0027] Figure 6 This is a schematic diagram of the separation of the current splitter component of the present invention;

[0028] Figure 7 This is a schematic diagram showing the separation of the secondary cutting component of the present invention;

[0029] Figure 8 This is a top view of the overall structure of the present invention.

[0030] The components are as follows: 1. Cutting box; 2. Discharge box; 3. Motor; 4. Fan blade; 5. Diverter assembly; 51. Housing; 52. Worm gear; 53. External gear ring; 54. Support shaft; 55. Diverter plate; 56. Helical gear one; 57. Limiting ring; 58. Fixing ring; 6. Telescopic cutting module; 61. Telescopic rod; 62. Support ring one; 63. Clutch sleeve; 64. Transmission sleeve; 65. Support ring two; 66. Fixing cylinder; 67. Telescopic column; 68. Spring; 69. Cutter three; 7. Disperser; 8. Rotating shaft one; 9. Rotating shaft two; 10. Cutter one; 11. Cutter two; 12. Support base; 13. Dust cover; 14. Helical gear two; 15. Helical gear three; 16. Helical gear four. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figures 1-8 This embodiment discloses a straw recycling and crushing device, including a cutting box 1 and a discharge box 2. A motor 3 is installed at the bottom of the discharge box 2, and the device also includes:

[0033] The main cutting assembly includes a rotating shaft 8 fixedly mounted on the output shaft of motor 3, a rotating shaft 9 movably sleeved on the outer surface of the rotating shaft 8, a cutter 10 and a cutter 211 fixedly mounted on the top of the outer surfaces of the rotating shaft 8 and the rotating shaft 29 respectively, and a coaxial reversing module is installed between the rotating shaft 8 and the rotating shaft 29.

[0034] The auxiliary cutting assembly includes a support base 12 installed at the bottom of the inner wall of the cutting box 1, a telescopic cutting module 6 installed on the top of the support base 12, and a disperser 7 fixedly installed on the outer surface of the rotating shaft 9 above the telescopic cutting module 6.

[0035] The telescopic cutting module 6 includes a telescopic rod 61 and a second support ring 65 fixedly installed on the top of the support base 12. The telescopic end of the telescopic rod 61 is fixedly connected to the first support ring 62. The transmission sleeve 64 is rotatably installed inside the second support ring 65. The clutch sleeve 63 is slidably connected to the second rotating shaft 9 through a spline. The clutch sleeve 63 and the transmission sleeve 64 are appropriately matched. Multiple sets of fixed cylinders 66 are fixedly connected to the outer surface of the transmission sleeve 64. The telescopic column 67 and the spring 68 are movably sleeved inside the fixed cylinder 66. One end of the telescopic column 67 is fixedly connected to the third cutter 69.

[0036] This redesigned device boasts significantly improved practicality, capable of crushing materials into different sizes to meet diverse application needs. To achieve this, the device utilizes a coaxial reversal module to enable high-speed rotation of the inner and outer rotating shafts 8 and 9, which in turn drive the cutters 10 and 11 to rotate and cut in opposite directions, significantly enhancing material crushing efficiency. Furthermore, a telescopic cutting module 6, located between the disperser 7 and the support base 12, provides a second, selective cutting of the material. The rotating support ring 65 supports the transmission sleeve 64 and the fixed sleeve 66. The telescopic rod 61 drives the support ring 62 and the clutch sleeve 63 upward. When the clutch sleeve 63 abuts against the transmission sleeve 64 and generates friction, the power of the rotating shaft 9 can be transmitted to the transmission sleeve 64 and the fixed sleeve 66, which in turn drives the fixed sleeve 66 and the cutter 69 to rotate. At the same time, the centrifugal force generated "throws" the cutter 69 to the "circular area", thereby performing secondary cutting on the material passing through this area. This design greatly improves the range of material crushing size and is highly practical.

[0037] In this embodiment, the coaxial reversing module includes a dust cover 13 fixedly installed at the bottom of the support base 12. The rotating shaft 8 is adapted to pass through the bottom of the dust cover 13. Two sets of helical gears 16 are fixedly connected to the top of the inner wall of the dust cover 13. Helical gears 15 and 14 located in the dust cover 13 are fixedly installed on the bottom of the outer surface of the rotating shaft 8 and the outer surface of the rotating shaft 9, respectively. Helical gears 15 and 14 are meshed with helical gears 16.

[0038] This device features a coaxial reversing module at the bottom of the support base 12. This module enables the coaxial reversal of shaft 1 (8) and shaft 2 (9). A dust cover 13 at the bottom of the support base 12 encloses the entire module, providing dust protection. Helical gear 3 (15) is installed on the outer surface of shaft 1 (8), and helical gear 2 (14) is installed on the outer surface of shaft 2 (9). Two sets of helical gear 4 (16) are installed at the bottom of the support base 12, meshing perpendicular to helical gear 2 (14) and helical gear 3 (15). This achieves the coaxial reversal of shaft 1 (8) and shaft 2 (9). The resulting high-speed reversal drives cutters 1 (10) and 2 (11) mounted on the outer surfaces of shaft 1 (8) and shaft 2 (9), respectively, to rapidly cut the material. Because cutters 1 (10) and 2 (11) rotate in reverse, their rotational clearance is smaller, significantly enhancing the cutting and crushing effect on the material and reducing the load on motor 3.

[0039] Note: The rotation gap refers to the rotation gap between cutters 10. When cutter 2 11 reverses its rotation, the rotation gap can be greatly reduced, thus improving the material cutting efficiency.

[0040] In this embodiment, a diversion assembly 5 is installed in the middle of the outer surface of the cutting box 1. The diversion assembly 5 includes a housing 51 installed on the outer surface of the cutting box 1 and multiple sets of support shafts 54 rotatably installed on the inner wall of the cutting box 1. One end of the support shaft 54 ​​is fixedly connected to a diversion plate 55 located in the inner cavity of the cutting box 1, and the other end of the support shaft 54 ​​is equipped with a helical gear 56, which meshes with an external gear ring 53. A worm gear 52 is rotatably installed on the inner wall of the housing 51, and the worm gear 52 meshes with the external gear ring 53.

[0041] This device also includes a flow-diverting component 5, which slows down the downward movement of the material after the first cut by cutter 10 and cutter 11. Working in conjunction with the disperser 7, it "throws" the material towards the "annular area" between the inner wall of the cutting box 1 and the bottom of the disperser 7. Multiple sets of support shafts 54 and flow-diverting plates 55, rotatably mounted on the inner wall of the cutting box 1, allow the flow-diverting plates 55 to divert the cut material. When the telescopic cutting module 6 begins cutting, the diverted material enhances the crushing effect of the telescopic cutting module 6. By rotating the worm gear 52, the outer gear ring 53 rotates, which in turn rotates the helical gear 56, support shafts 54, and flow-diverting plates 55. This causes the flow-diverting plates 55 to tilt and reduce the effective area through which the material passes, thus slowing down the material's passage speed. When the material passes through the "annular area" of the telescopic cutting module 6 at a slower speed, the cutting and crushing effect is enhanced.

[0042] In this embodiment, the diversion component 5 also includes a limiting ring 57 fixedly connected to the outer surface of the support shaft 54. The outer surface of the cutting box 1 is fixedly connected to multiple sets of fixing rings 58 that are movably sleeved on the outer surface of the support shaft 54. The limiting ring 57 is located outside the fixing ring 58 and abuts against the fixing ring 58.

[0043] like Figure 4 As shown, the fixing ring 58 is installed on the outer surface of the cutting box 1. The outer end of the support shaft 54 ​​is limited by the meshing between the helical gear 56 and the external gear ring 53, while the inner end of the support shaft 54 ​​is limited by the abutment of the limiting ring 57 and the fixing ring 58.

[0044] In this embodiment, the minimum number of diverter plates 55 is eight sets. The multiple diverter plates 55 are distributed equidistantly in the inner cavity of the cutting box 1 in a circular pattern. The initial state of the diverter plates 55 is a vertical distribution.

[0045] like Figure 1 As shown, when the eight diversion plates 55 are in a vertical state, they can divert the material and improve the cutting efficiency of the material. When the diversion plates 55 are tilted, it is equivalent to reducing the effective gap between the material passing through the diversion plates 55, which slows down the movement speed of the material and provides a buffer for the material to be cut by the telescopic cutting module 6, so that the material is cut more thoroughly by the telescopic cutting module 6.

[0046] In this embodiment, the axial cross-section of the telescopic column 67 is "T" shaped, and the spring 68 is movably sleeved on the outer surface of the telescopic column 67. The two ends of the spring 68 are elastically connected to the telescopic column 67 and the fixed cylinder 66, respectively.

[0047] like Figure 3 , Figure 5 and Figure 7 As shown, when the clutch sleeve 63 moves upward and comes into contact with the transmission sleeve 64 to generate friction, it will transmit the power of the rotating shaft 9 to the transmission sleeve 64, so that it can drive the fixed sleeve 66 and the cutter 69 to rotate. The resulting centrifugal force can "throw" the telescopic column 67 and the cutter 69 outward, so that the cutter 69 just protrudes from the "circular area" and completes the secondary cutting of the material.

[0048] In this embodiment, the clutch sleeve 63 is located inside the transmission sleeve 64, and the contact surfaces of the clutch sleeve 63 and the transmission sleeve 64 are tapered and inclined. Both the clutch sleeve 63 and the transmission sleeve 64 are made of a material with a high coefficient of friction.

[0049] High friction coefficient materials mainly include metal matrix composites such as copper fiber reinforced materials, ceramic matrix materials, polymer matrix composites and natural rubber. These materials optimize friction performance through surface treatment or the addition of friction modifiers. The clutch sleeve 63 is slidably connected to the rotating shaft 9 through a spline, that is, the clutch sleeve 63 can move freely up and down along the axis of the rotating shaft 9, and can rotate together with the rotating shaft 9.

[0050] In this embodiment, a fan blade 4 located in the inner cavity of the discharge box 2 is fixedly connected to the bottom of the outer surface of the rotating shaft 8, and a discharge port is opened on the side of the discharge box 2.

[0051] The fan blade 4 is located inside the discharge box 2. When it rotates, it can throw the crushed material into the discharge box 2, realizing the device's rapid discharge function.

[0052] In this embodiment, the axial cross-sectional shape of the disperser 7 is "human" shaped, and the disperser 7 can cover the outer end of the telescopic cutting module 6;

[0053] like Figure 3 As shown, the "human"-shaped disperser 7 can swing the material outward by rotating, so that the material enters the "circular area", which is convenient for the telescopic cutting module 6 to perform secondary cutting and crushing.

[0054] Working principle:

[0055] First, such as Figure 3 , Figure 5The telescopic rod 61 is activated, which drives the support ring 62 and clutch sleeve 63 to move downward, causing the clutch sleeve 63 and transmission sleeve 64 to disengage and cut off the power between the transmission sleeve 64 and the rotating shaft 9. At this time, the clutch sleeve 63 can rotate freely with the rotating shaft 9. The motor 3 is started, which drives the rotating shaft 8, fan blade 4 and cutter 10 to rotate forward. At the same time, the rotating shaft 8 transmits power to the rotating shaft 9 in the opposite direction through the helical gear 3 15, helical gear 4 16 and helical gear 2 14, thereby driving the rotating shaft 9, clutch sleeve 63, disperser 7 and cutter 2 11 to rotate in reverse.

[0056] Then, the material is put into the top feed port of the cutting box 1 and is cut at high speed by the counter-rotating cutter 10 and cutter 11 located at the top of the inner cavity of the cutting box 1. Then, the cut material is diverted by the multi-group flow plate 55 and enters the upper part of the disperser 7. The high-speed rotating disperser 7 throws the material to the vicinity of the inner wall of the cutting box 1, so that the material passes through the "ring area" formed between the inner wall of the cutting box 1 and the outer side of the disperser 7. Finally, the material enters the discharge box 2 and is discharged by the high-speed rotating fan blade 4.

[0057] Finally, when it is necessary to increase the degree of material cutting and make the material smaller in size, such as... Figure 1 As shown, rotating the worm gear 52 drives the external gear ring 53 to rotate, which in turn drives the support shaft 54 ​​and the flow divider plate 55 to rotate via the helical gear 56. This rotation increases the obstruction area of ​​the flow divider plate 55 within the cutting chamber 1, reducing the downward speed of the material after it has been cut by the cutter 10 and cutter 21. Simultaneously, the telescopic rod 61 is activated, causing the support ring 62 and clutch sleeve 63 to move upwards. This causes the clutch sleeve 63 and the transmission sleeve 64 to come into contact and generate friction. This friction transmits the power from the rotating shaft 9 to the fixed cylinder 66, causing the fixed cylinder 66 to rotate at high speed. This causes the telescopic column 67 and cutter 3 69 to move outwards under centrifugal force. Figure 3 As shown, the third cutter 69 moves outward to the "circular area" and performs a secondary cut on the material passing through this area. Finally, the fan blade 4 carries the material out, completing the discharge.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A straw recycling and crushing device, comprising a cutting box (1) and a discharge box (2), wherein a motor (3) is installed at the bottom of the discharge box (2), characterized in that, Also includes: The main cutting assembly includes a rotating shaft 1 (8) fixedly installed on the output shaft of a motor (3), a rotating shaft 2 (9) movably sleeved on the outer surface of the rotating shaft 1 (8), a cutter 1 (10) and a cutter 2 (11) fixedly installed on the top of the outer surfaces of the rotating shaft 1 (8) and the rotating shaft 2 (9), and a coaxial reversing module is installed between the rotating shaft 1 (8) and the rotating shaft 2 (9). The auxiliary cutting assembly includes a support base (12) installed at the bottom of the inner wall of the cutting box (1), a telescopic cutting module (6) is installed on the top of the support base (12), and a diffuser (7) located above the telescopic cutting module (6) is fixedly installed on the outer surface of the rotating shaft (9). The telescopic cutting module (6) includes a telescopic rod (61) and a second support ring (65) fixedly installed on the top of the support base (12). The telescopic end of the telescopic rod (61) is fixedly connected to the first support ring (62). The second support ring (65) is rotatably installed with a transmission sleeve (64). The clutch sleeve (63) and the second rotating shaft (9) are slidably connected by a spline. The clutch sleeve (63) and the transmission sleeve (64) are appropriately matched. Multiple sets of fixed cylinders (66) are fixedly connected to the outer surface of the transmission sleeve (64). The inside of the fixed cylinder (66) is movably fitted with a telescopic column (67) and a spring (68). One end of the telescopic column (67) is fixedly connected to a third cutter (69). A flow divider assembly (5) is installed in the middle of the outer surface of the cutting box (1). The flow divider assembly (5) includes a housing (51) installed on the outer surface of the cutting box (1) and multiple sets of support shafts (54) rotatably installed on the inner wall of the cutting box (1). One end of the support shaft (54) is fixedly connected to a flow divider plate (55) located in the inner cavity of the cutting box (1). The other end of the support shaft (54) is equipped with a helical gear (56), which meshes with an external gear ring (53). A worm gear (52) is rotatably installed on the inner wall of the housing (51). 2) Engages with the external gear ring (53). The flow splitting assembly (5) also includes a limiting ring (57) fixedly connected to the outer surface of the support shaft (54). The outer surface of the cutting box (1) is fixedly connected with multiple sets of fixed rings (58) that are movably sleeved on the outer surface of the support shaft (54). The limiting ring (57) is located outside the fixed ring (58) and abuts against the fixed ring (58). The number of the flow splitting plates (55) is at least eight sets. The multiple sets of flow splitting plates (55) are circumferentially and evenly distributed in the inner cavity of the cutting box (1). The initial state of the flow splitting plates (55) is vertical distribution.

2. The straw recycling and crushing device according to claim 1, characterized in that, The coaxial reversing module includes a dust cover (13) fixedly installed at the bottom of the support base (12). The first rotating shaft (8) is adapted to pass through the bottom of the dust cover (13) upward. Two sets of helical gears (16) are fixedly connected to the top of the inner wall of the dust cover (13). Helical gears (15) and (14) located in the dust cover (13) are fixedly installed on the bottom of the outer surface of the first rotating shaft (8) and the outer surface of the second rotating shaft (9). Helical gears (15) and (14) are meshed with helical gears (16). The discharge box (2) is fixedly installed at the bottom of the cutting box (1).

3. The straw recycling and crushing device according to claim 2, characterized in that, The telescopic column (67) has a "T" shaped axial section. The spring (68) is movably sleeved on the outer surface of the telescopic column (67). The two ends of the spring (68) are elastically connected to the telescopic column (67) and the fixed cylinder (66) respectively.

4. The straw recycling and crushing device according to claim 3, characterized in that, The clutch sleeve (63) is located inside the transmission sleeve (64). The contact surfaces of the clutch sleeve (63) and the transmission sleeve (64) are tapered and inclined. Both the clutch sleeve (63) and the transmission sleeve (64) are made of a material with a high coefficient of friction.

5. The straw recycling and crushing device according to claim 4, characterized in that, The bottom of the outer surface of the rotating shaft (8) is fixedly connected to a fan blade (4) located in the inner cavity of the discharge box (2), and the side of the discharge box (2) is provided with a discharge port.

6. The straw recycling and crushing device according to claim 5, characterized in that, The axial cross-section of the disperser (7) is "human" shaped, and the disperser (7) can cover the outer end of the telescopic cutting module (6).

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