Stirrer for corn straw fermentation

Abstract

The invention relates to the technical field of corn straw fermentation equipment, in particular to a corn straw fermentation stirrer which comprises a rotating sleeve rotationally connected to the interior of a fermentation tank, a plurality of mixing rods arranged on the outer wall of the rotating sleeve at equal intervals in the circumferential direction, and further comprises first stirring parts installed on the mixing rods; the stirring part II is obliquely arranged and is connected between the mixing rod and the rotating sleeve; the mixing rod and the two groups of stirring plates with opposite inclination directions are driven by the rotating sleeve to synchronously rotate, so that the stirring plate I generates upward raising power on edge straws, the stirring plate II generates downward pressing force on middle straws, and vertical circulating flow of the straws is formed in the tank, so that the mixing uniformity of the straws and fermentation liquor is improved, and the stirring effect is improved. Insufficient fermentation caused by accumulation of straws at the edge and influence on the fermentation efficiency caused by floating of the straws in the middle are avoided, and the overall fermentation effect of the corn straws is effectively enhanced.

Description

Technical Field

[0001] This invention belongs to the technical field of corn stalk fermentation equipment, specifically, it relates to a stirrer for corn stalk fermentation. Background Technology

[0002] Corn stalks, as a major biomass waste generated in agricultural production, are characterized by their wide range of sources and large total volume. Converting corn stalks into biogas, bio-organic fertilizer, and other products through microbial fermentation technology can not only realize the resource utilization of waste and reduce environmental pollution, but also provide clean energy and high-quality fertilizer for agricultural production, which is of great significance for promoting the development of a circular economy in agriculture.

[0003] Currently, before fermenting corn stalks, they need to be crushed first to break the whole stalks into small pieces to increase the contact area between the stalks and the fermentation liquid and microorganisms. After crushing, the stalk pieces are poured into the fermentation tank, and fermentation liquid and bacteria are added for fermentation. To ensure that the stalk pieces can be fully mixed with the fermentation liquid during the fermentation process and to avoid uneven contact of local materials affecting the fermentation effect, a stirrer is usually added inside the fermentation tank. The dynamic mixing of materials is achieved through the continuous operation of the stirrer. However, most of the agitators used in existing fermenters are traditional single-shaft agitators. These agitators can only generate horizontal rotational disturbances on the materials. Due to the inherent differences in the fluffiness and flowability of straw fragments, under the action of horizontal rotational agitation, the less dense straw tends to float and accumulate in the middle area of ​​the fermenter, while some straw fragments will accumulate towards the edge of the tank wall due to centrifugal force. This results in a significant reduction in the uniformity of mixing between the straw and the fermentation liquid. The straw accumulated in the edge area has difficulty contacting sufficient fermentation liquid, which can easily lead to incomplete fermentation. The straw floating in the middle area will hinder the circulation of the fermentation liquid, affecting the activity and reproductive efficiency of microorganisms. Ultimately, this leads to a longer overall fermentation cycle and a decrease in product yield, making it difficult to meet the needs of large-scale and efficient fermentation production. Summary of the Invention

[0004] This invention provides a stirrer for corn stalk fermentation. A rotating sleeve drives a mixing rod and two sets of opposing inclined agitators to rotate synchronously. One pair of agitators on the edge of the stalks generates an upward force, while the other pair on the middle stalks generates a downward pressure. This creates a circulating flow of stalks within the container, improving the uniformity of mixing between the stalks and the fermentation liquid. It also avoids the problems caused by edge stalk accumulation leading to incomplete fermentation and the impact of floating middle stalks on fermentation efficiency, effectively enhancing the overall fermentation effect of the corn stalks. This solves the problems mentioned in the background art, namely: To achieve the above objectives, a stirrer for corn stalk fermentation includes a rotating sleeve rotatably connected inside a fermentation tank. Multiple mixing rods are equidistantly arranged along the circumferential direction on the outer wall of the rotating sleeve. The stirrer also includes: a first actuating part, mounted on the mixing rods; and a second actuating part, inclined and connected between the mixing rods and the rotating sleeve. When the rotating sleeve rotates, it drives the multiple mixing rods to rotate synchronously. During rotation, the mixing rods cause the first and second actuating parts to move synchronously inside the fermentation tank. During rotation, the first actuating part exerts an upward lifting force on the straw fragments in the edge area inside the fermentation tank, while the second actuating part exerts a downward pressing force on the straw fragments in the middle area inside the fermentation tank, thereby creating a circulating flow of straw fragments within the fermentation tank.

[0005] Based on this, as a further improvement of this application, the first actuating part includes an inclined actuating plate two, which is mounted on the mixing rod, and multiple actuating plates two are provided, which are equidistantly distributed along the length direction of the mixing rod; the second actuating part includes an inclined actuating plate one, which is connected between the mixing rod and the rotating sleeve, and multiple actuating plates one are provided, which are equidistantly distributed along the connection area between the mixing rod and the rotating sleeve, and the inclination direction of the actuating plate one is opposite to that of the actuating plate two; In the above technical solution, by using two actuating plates with opposite tilt directions, the insufficient force of a single actuating plate can be avoided, which would lead to insignificant circulation and prevent straw from stagnating in local areas, thus effectively improving the uniformity of material flow in the fermentation tank.

[0006] Based on this, as a further improvement of this application, a connecting sleeve is integrally formed on both the rotating sleeve and the mixing rod. A drive shaft is rotatably connected inside the connecting sleeve. The actuating plate is fitted onto the connecting sleeve and fixedly connected to the drive shaft. A rotating shaft with the opposite rotation direction is provided inside the rotating sleeve. A bevel gear two is fixedly installed on the rotating shaft. A bevel gear one that meshes with the bevel gear two is fixedly installed on the drive shaft. The number of teeth of the bevel gear one is more than the number of teeth of the bevel gear two. In the above technical solution, by setting the first actuating plate to be rotating, the first actuating plate can continuously change the tilt angle during the rotation process, which can not only continuously apply a downward pressing force to the straw fragments, but also generate an upward lifting force to the straw fragments when switching the tilt direction, thus enriching the disturbance methods of the material in the middle area.

[0007] Based on this, as a further improvement of this application, a plurality of rotating shafts corresponding to the second actuating plate are rotatably connected in the cavity inside the mixing rod. The second actuating plate is fixedly connected to one end of the rotating shaft. Each rotating shaft is fixedly mounted with a pulley. The plurality of pulleys are connected to each other by a belt. One end of the drive shaft is pre-grooved with a groove. A toothed ring is fixedly mounted in the groove. A third gear that meshes with the toothed ring is fixedly mounted on the rotating shaft. In the above technical solution, by setting the second agitator plate to rotate, not only can the agitation effect on the straw fragments in the edge area be enhanced, but also a downward pressing force can be applied to the straw fragments when switching the tilt direction, thereby achieving bidirectional disturbance of the material in the edge area.

[0008] Based on this, as a further improvement of this application, it also includes a drive box set on the fermenter, a second gear fixedly installed on one end of the rotating sleeve that passes through the drive box, a first gear that meshes with the second gear is provided in the drive box, a motor one and a motor two are fixedly installed on the drive box, the first gear is fixedly installed on the output end of the motor one, and the end of the rotating shaft that passes through the drive box is fixedly connected to the output end of the motor two. In the above technical solution, the setting of motor one and motor two facilitates the flexible adjustment of the rotation speed of the rotating sleeve and the rotating shaft according to the material state at different stages of fermentation.

[0009] Based on this, as a supplement to another improvement of this application, multiple mounting seats are equally spaced on the rotating shaft and the mixing rod. A pressure plate is rotatably connected to the mounting seat via a fixed shaft. The pressure plate is located below the first actuating plate. Mounting cavities are opened at both ends of the mounting seat. A rotating ring is integrally formed on one end of the fixed shaft that passes through the mounting cavity. A torsion spring is set in the mounting cavity, with one end fixedly connected to the rotating ring and the other end fixedly connected to the inner wall of the mounting cavity. In the above technical solution, the rotating shaft and mixing rod drive the mounting base and pressure plate to move. The two pressure plates first approach and crush the hard straw, then tilt and separate the lignin, and then the straw is disturbed by swinging after being reset by the torsion spring. Finally, the straw and fermentation liquid are fully contacted, which improves the fullness and efficiency of fermentation.

[0010] Based on this, as a further supplement to another improvement of this application, multiple drainage grooves are provided at equal intervals on the mating surfaces of the two pressure plates; In the above technical solution, by adding a drainage trough, the accumulation of fermentation liquid between the pressing plate and the straw is avoided, which would cause slippage. This ensures that the directional pressure is effectively applied to the hard straw, and serves as another improvement to this application.

[0011] Based on this, as a further improvement to this application, the two sides of the drainage trough are arranged to slope downwards; In the above technical solution, by setting the two sides of the drainage tank to be inclined downwards, the slow discharge of fermentation liquid and debris blockage of the drainage tank caused by the lack of inclination on the two sides are avoided.

[0012] In order to prevent straw debris from accumulating on the tank wall and causing insufficient fermentation, an elastic pad is provided on the side wall of the second actuating plate, and the elastic pad is in contact with the inner wall of the fermentation tank.

[0013] Based on this, to promote the replenishment of the bottom material of the tank to participate in the upper and lower circulation flow, a plurality of disturbance rods are circumferentially arranged on the outer wall of one end of the rotating shaft extending from the lower end of the rotating sleeve, and the disturbance rods are in contact with the inner wall of the lower end of the fermentation tank.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. This corn stalk fermentation stirrer drives the mixing rod and two sets of inclined plates to rotate synchronously through the rotating sleeve. The pair of plates on the edge of the plate generates an upward force on the straw, while the pair of plates on the middle of the plate generates a downward pressure on the straw. This creates a circulation of straw in the tank, which improves the uniformity of mixing between the straw and the fermentation liquid, avoids insufficient fermentation caused by the accumulation of straw at the edge, and avoids the impact of floating straw in the middle on the fermentation efficiency, thus effectively enhancing the overall fermentation effect of corn stalks. 2. This corn stalk fermentation mixer, through the counter-rotation of the rotating shaft and the rotating sleeve, combined with the reduction transmission of the bevel gear set, allows the first agitator plate to dynamically change its tilt angle. It can continuously press the middle stalks and switch directions to shake the stalks. At the same time, through the transmission of the toothed ring, pulley and belt, the second agitator plate can synchronously and dynamically adjust its angle, realizing bidirectional disturbance of the edge stalks. This enriches the material disturbance methods, avoids the problem of insufficient circulation caused by a single force, and further improves the mixing uniformity and the equipment's adaptability to materials. 3. This corn stalk fermentation mixer uses a rotating shaft and mixing rod to drive the pressure plate to move synchronously. The directional pressure of the pressure plate when it approaches crushes the hard stalks, and the kneading action during separation breaks down the lignin coating. The reciprocating oscillation of the pressure plate when it is driven to return to its original position by a torsion spring further disturbs the material. This helps to crush the hard stalks, expose the biodegradable components inside the stalks, and promote full contact between the stalks and the fermentation liquid. It avoids problems such as insufficient fermentation and low degradation efficiency caused by hard stalk residue and lignin coating, and effectively improves the sufficiency and efficiency of the fermentation reaction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a bottom view of the present invention; Figure 4This is a schematic diagram of the structure of the rotating sleeve, rotating shaft, actuating plate one, and actuating plate two of the present invention; Figure 5 This is a schematic diagram of the structure of the mixing rod and pressure plate of the present invention; Figure 6 This is a schematic diagram showing the unfolded structure of the toggle plate and drive shaft of the present invention; Figure 7 This is a partial cross-sectional view of the hybrid rod of the present invention; Figure 8 A schematic diagram showing the flow direction of straw fragments inside the fermentation tank by the first and second actuating plates; Figure 9 This is a schematic diagram of the internal structure of the drive box of the present invention; Figure 10 This is a schematic diagram of the structure of the rotating shaft, pressure plate, and disturbance rod of the present invention; Figure 11 This is a cross-sectional view of the toggle plate of the present invention; Figure 12 This is a schematic diagram of the structure of the pressure plate of the present invention; Figure 13 This is the present invention. Figure 7 Enlarged view of section A; Figure 14 This is the present invention. Figure 11 Enlarged view of section B; Figure 15 This is the present invention. Figure 12 Enlarged view of section C; Figure 16 This is a cross-sectional view of the pressure plate of the present invention.

[0016] In the diagram: 1. Drive box; 101. Motor 1; 102. First gear; 103. Second gear; 104. Motor 2; 2. Rotating sleeve; 201. Connecting sleeve; 202. Mixing rod; 203. Actuating plate 1; 204. Actuating plate 2; 205. Elastic pad; 3. Rotating shaft; 301. Disturbance rod; 302. Drive shaft; 303. Bevel gear 1; 304. Bevel gear 2; 4. Rotating shaft; 401. Pulley; 402. Belt; 403. Third gear; 404. Gear ring; 5. Mounting base; 501. Pressure plate; 502. Mounting cavity; 503. Fixed shaft; 504. Rotating ring; 505. Torsion spring; 506. Drainage tank. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] Example 1: Refer to Figure 1 , Figure 2 , Figure 3 A stirrer for corn stalk fermentation includes a rotating sleeve 2 rotatably connected to the inside of a fermentation tank. Multiple mixing rods 202 are equidistantly arranged on the outer wall of the rotating sleeve 2 along the circumferential direction. The stirrer also includes: a first actuating part, installed on the mixing rods 202; and a second actuating part, inclined and connected between the mixing rods 202 and the rotating sleeve 2. When the rotating sleeve 2 rotates, it drives the multiple mixing rods 202 to rotate synchronously. During rotation, the mixing rods 202 drive the first actuating part and the second actuating part to move synchronously inside the fermentation tank. During rotation, the first actuating part can exert an upward lifting force on the straw fragments in the edge area inside the fermentation tank, while the second actuating part can exert a downward pressing force on the straw fragments in the middle area inside the fermentation tank, thereby creating a circulating flow of straw fragments within the fermentation tank. When the rotating sleeve 2 rotates around its own axis, it drives multiple mixing rods 202 to rotate synchronously. The mixing rods 202 drive the first and second actuating parts to move synchronously inside the fermentation tank. During the rotation, the first actuating part exerts an upward lifting force on the straw fragments in the edge area inside the fermentation tank, while the second actuating part exerts a downward pressing force on the straw fragments in the middle area inside the fermentation tank. This creates a circulating flow of straw fragments inside the fermentation tank, which improves the uniformity of mixing between the straw and the fermentation liquid, prevents straw accumulation in the edge area from causing insufficient fermentation, and prevents straw floating in the middle area from affecting the fermentation efficiency, thus effectively improving the overall fermentation effect of corn straw.

[0019] like Figure 4 As shown, the first actuating part includes an inclined actuating plate 204, which is mounted on the mixing rod 202. Multiple actuating plates 204 are provided, and the multiple actuating plates 204 are equidistantly distributed along the length direction of the mixing rod 202. like Figure 8 As shown, the second actuating part includes an inclined actuating plate 203. The actuating plate 203 is connected between the mixing rod 202 and the rotating sleeve 2. Multiple actuating plates 203 are provided. The multiple actuating plates 203 are equidistantly distributed along the connection area between the mixing rod 202 and the rotating sleeve 2. The inclination direction of the actuating plate 203 is opposite to that of the second actuating plate 204, and the inclination angle is 30-60°. When the rotating sleeve 2 drives the mixing rod 202 to rotate, multiple equidistant actuating plates 203 rotate synchronously, causing them to exert a continuous downward pressing force on the straw fragments in the middle area. At the same time, multiple equidistant actuating plates 204 rotate synchronously, causing a continuous upward lifting force on the straw fragments in the edge area. Since the two plates are tilted in opposite directions, the effect of the straw fragments circulating up and down is further enhanced, thereby improving the mixing efficiency, avoiding insufficient force from a single actuating plate that leads to insignificant circulation, preventing straw from stagnating in local areas, and effectively improving the uniformity of material flow in the fermentation tank.

[0020] Example 2: Refer to Figure 4 , Figure 5 , Figure 6 , Figure 10 A stirrer for corn stalk fermentation is basically the same as in Example 1. However, the rotating sleeve 2 and the mixing rod 202 are both integrally formed with a connecting sleeve 201. A drive shaft 302 is rotatably connected inside the connecting sleeve 201. A first actuating plate 203 is sleeved on the connecting sleeve 201 and fixedly connected to the drive shaft 302. A rotating shaft 3 with the opposite rotation direction is provided inside the rotating sleeve 2. A second bevel gear 304 is fixedly installed on the rotating shaft 3. A first bevel gear 303 that meshes with the second bevel gear 304 is fixedly installed on the drive shaft 302. The first bevel gear 303 has more teeth than the second bevel gear 304, and the tooth ratio is 2:1. When the rotating shaft 3 and the rotating sleeve 2 rotate in opposite directions, the rotating shaft 3 drives the second bevel gear 304 to rotate. The second bevel gear 304 meshes with and drives the first bevel gear 303 and the drive shaft 302 to rotate. The drive shaft 302 drives the first actuating plate 203 to rotate. Since the first bevel gear 303 has more teeth than the second bevel gear 304 (e.g., Figure 11 As shown, the drive shaft 302 is decelerated and rotated, causing the agitator plate 203 to continuously change its tilt angle during rotation. This constantly changing tilt angle not only applies a downward pressing force to the straw fragments, but also generates an upward lifting force on the straw fragments when switching tilt directions. This enriches the disturbance methods of the material in the middle area, achieving the purpose of having the agitator plate 203 act on the straw fragments with appropriate speed and dynamic force. This avoids the straw splashing caused by the agitator plate 203 rotating too fast or the disturbance effect being affected by the speed being too slow, and prevents the material in the middle area from being subjected to a single-direction force and thus not circulating sufficiently. At the same time, the counter-rotation of the shaft 3 and the rotating sleeve 2 further enhances the material disturbance effect and effectively improves the mixing uniformity.

[0021] like Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, multiple rotating shafts 4 corresponding to the second actuating plate 204 are rotatably connected in the cavity inside the mixing rod 202. The second actuating plate 204 is fixedly connected to one end of the rotating shaft 4. Each rotating shaft 4 is fixedly mounted with a pulley 401. The multiple pulleys 401 are connected to each other by a belt 402. One end of the drive shaft 302 has a groove, in which a toothed ring 404 is fixedly mounted. A third gear 403 that meshes with the toothed ring 404 is fixedly mounted on the rotating shaft 4. When the drive shaft 302 rotates, it drives the gear ring 404 to rotate. The gear ring 404 meshes with and drives the third gear 403 and the rotating shaft 4 to rotate (e.g., Figure 13 , Figure 14As shown, the rotating shaft 4 drives other rotating shafts 4 to rotate synchronously via pulley 401 and belt 402, thereby causing multiple actuating plates 204 to rotate synchronously and continuously change their tilt angle. This not only enhances the lifting effect on straw fragments in the edge area, but also applies a downward pressing force to the straw fragments when switching tilt directions, achieving bidirectional disturbance of the material in the edge area. This driving method enables the actuating plates 204 to act autonomously and dynamically on the material, avoiding the actuating plates 204 from rotating only with the mixing rod 202, resulting in a single lifting force and straw accumulation at the edge, and preventing inconsistent material circulation rhythm between the edge and the middle area. At the same time, in conjunction with the dynamic force of the actuating plate 203, it further improves the smoothness of material circulation and the uniformity of mixing in the fermenter.

[0022] Example 3: Reference Figure 9 , Figure 10 A stirrer for fermenting corn stalks is basically the same as in Example 1, but further includes a drive box 1 set on the fermentation tank. A second gear 103 is fixedly installed on one end of the rotating sleeve 2 that passes through the drive box 1. A first gear 102 that meshes with the second gear 103 is provided in the drive box 1. Motor 101 and motor 104, both of which are geared motors, are fixedly installed on the drive box 1. The first gear 102 is fixedly installed on the output end of motor 101. A rotating shaft 3 passes through one end of the drive box 1 and is fixedly connected to the output end of motor 104. Both motors, 101 and 104, are geared motors. The output of motor 101 drives the first gear 102 to rotate, which in turn drives the second gear 103 and the rotating sleeve 2 to rotate at a stable speed. The output of motor 104 drives the rotating shaft 3 to rotate in the opposite stable direction to the rotating sleeve 2. The independent drive of the two geared motors achieves precise control of the speed of the rotating sleeve 2 and the rotating shaft 3. The speed reduction function of the geared motors is used to achieve stable speed output, avoiding the difficulty in adjusting the speed of ordinary motors or the impact of speed fluctuations on the mixing effect. It also prevents sudden changes in mixing intensity from causing straw splashing or uneven mixing. It is convenient to flexibly adjust the speed according to the material state at different stages of fermentation, further improving the stability of equipment operation and the accuracy of mixing control, and effectively enhancing the applicability and ease of operation of the equipment.

[0023] Example 4: Reference Figure 4 , Figure 5 , Figure 6A stirrer for fermenting corn stalks is basically the same as in Example 1, but further, multiple mounting seats 5 are equidistantly arranged on the rotating shaft 3 and the mixing rod 202. A pressure plate 501 is rotatably connected to the mounting seat 5 through a fixed shaft 503. The pressure plate 501 is located below the actuating plate 203. Both ends of the mounting seat 5 are provided with mounting cavities 502. A rotating ring 504 is integrally formed on one end of the fixed shaft 503 that passes through the mounting cavity 502. A torsion spring 505 is provided in the mounting cavity 502, one end of which is fixedly connected to the rotating ring 504 and the other end is fixedly connected to the inner wall of the mounting cavity 502. When the rotating shaft 3 and mixing rod 202 rotate, they drive the mounting base 5 and pressure plate 501 to move synchronously. When the two pressure plates 501 approach each other, they will exert directional pressure on the straw located between them, which can directly crush the hard straw that is not completely crushed in the early stage. As the rotating shaft 3 and mixing rod 202 continue to drive the mounting base 5 and pressure plate 501 to rotate, the two pressure plates 501 gradually tilt and twist the torsion spring 505 (e.g., Figure 15 As shown in the figure, the straw is slowly separated. During this process, the straw is kneaded, breaking the lignin coating and exposing the biodegradable cellulose and hemicellulose inside. After the two pressure plates 501 are separated, the stored torsion spring 505 releases its elastic potential energy to drive the pressure plate 501 to reset. When resetting, the pressure plate 501 swings back and forth under the action of inertia, further disturbing the surrounding straw. This achieves the purpose of assisting in breaking hard straw, kneading and destroying the lignin coating, and enhancing the disturbance of materials. It can promote full contact between straw and fermentation liquid, avoid problems such as insufficient fermentation and low degradation efficiency caused by hard straw residue and lignin coating, and effectively improve the fullness and efficiency of fermentation reaction.

[0024] It should be noted that, due to the presence of the torsion spring 505, the pressure plate 501 will not rotate due to obstruction or collision with the straw inside the fermentation tank when it rotates. Therefore, it will not affect the crushing and kneading process of the straw.

[0025] Example 5: Refer to Figure 12 A stirrer for fermenting corn stalks is basically the same as in Example 1, but further, multiple drainage grooves 506 are equally spaced on the mating surfaces of the two pressure plates 501. As the two pressure plates 501 approach each other to crush the hard straw and during the process of separating and kneading the straw, the fermentation liquid squeezed out between the straws can flow through the drainage groove 506 on the mating surface. During the crushing stage, the drainage groove 506 prevents the fermentation liquid from accumulating between the pressure plate 501 and the straw, causing slippage, and ensures that the directional pressure is effectively applied to the hard straw. During the kneading stage, the drainage tank 506 guides the fermentation liquid to penetrate into the gaps in the kneaded straw, promoting the contact between the exposed cellulose and hemicellulose and the fermentation liquid. This ensures the crushing and kneading effect of the pressing plate 501 and accelerates the contact between the fermentation liquid and the straw, preventing the accumulation of fermentation liquid from affecting the operation of the pressing plate 501 or the insufficient degradation of straw. This further improves the straw pretreatment effect and fermentation reaction efficiency, effectively ensuring the stability of the fermentation process.

[0026] like Figure 16 As shown, the two sides of the drain tank 506 are inclined downwards, and the inclined surfaces are smoothly polished to reduce the resistance to liquid flow. During the crushing and separation of hard straw by the pressing plates 501, the fermentation liquid squeezed out between the straws will naturally flow into the drainage trough 506. Since the drainage trough 506 is inclined downwards on both sides, it forms a guide slope towards the trough opening. The fermentation liquid can quickly converge towards the trough opening and be discharged along the inclined slope. At the same time, the flowing fermentation liquid can carry the small straw fragments generated by the crushing with the force of the inclined guide and be discharged together, avoiding the accumulation of fragments in the trough. This achieves the purpose of accelerating the directional discharge of fermentation liquid and simultaneously cleaning straw fragments. It avoids the slow discharge of fermentation liquid and the blockage of drainage trough 506 by fragments due to the lack of inclined design on both sides, and prevents the accumulation of fragments from affecting the subsequent crushing and crushing action of the pressing plate 501. This further improves the drainage efficiency and the working stability of the pressing plate 501.

[0027] Example 6: Refer to Figure 7 A stirrer for fermenting corn stalks is basically the same as in Example 1. However, an elastic pad 205 is glued to the side wall of the second stirring plate 204. The elastic pad 205 is made of rubber and has a thickness of 0.5-1cm. The elastic pad 205 is attached to the inner wall of the fermentation tank. When the actuating plate 204 rotates, the elastic pad 205 contacts the inner wall of the fermentation tank, achieving the purpose of cleaning the straw debris adhering to the inner wall of the fermentation tank, avoiding the accumulation of straw debris on the tank wall and causing insufficient fermentation. At the same time, the rubber elastic pad 205 can buffer the collision between the actuating plate 204 and the tank wall, preventing damage to the tank wall and the actuating plate 204, effectively improving the cleanliness of the fermentation tank and the service life of the equipment.

[0028] Example 7: Refer to Figure 10 A stirrer for fermenting corn stalks is basically the same as in Example 1. Furthermore, a plurality of disturbance rods 301 are welded to the outer wall of one end of the rotating shaft 3 extending from the lower end of the rotating sleeve 2. The disturbance rods 301 are made of stainless steel and their length is adapted to the radius of the inner wall of the lower end of the fermentation tank. The disturbance rods 301 are in close contact with the inner wall of the lower end of the fermentation tank. When the rotating shaft 3 rotates, it drives the disturbance rod 301 to rotate synchronously. The disturbance rod 301 stirs the straw fragments at the bottom of the fermentation tank to prevent the straw from settling at the bottom of the tank, thus avoiding fermentation failure due to the straw not coming into contact with the fermentation liquid. At the same time, it promotes the material at the bottom of the tank to participate in the vertical circulation, further improving the uniformity of the material mixing in the entire fermentation tank, effectively improving the overall quality of corn straw fermentation and the uniformity of the material mixing in the fermentation tank. After fermentation is complete, when the fermented material is discharged from the fermentation tank, the rotating disturbance rod 301 can prevent the material from accumulating at the bottom of the tank, making it easier for the material to be discharged quickly, effectively improving the overall quality of corn stalk fermentation and the convenience of discharging the fermented material.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention.

Claims

1. A stirrer for fermenting corn stalks, comprising a rotating sleeve (2) rotatably connected inside a fermentation tank, wherein a plurality of mixing rods (202) are equidistantly arranged on the outer wall of the rotating sleeve (2) along the circumferential direction, characterized in that, Also includes: A toggle unit is mounted on the mixing rod (202); The second actuating part, which is set at an angle, is connected between the mixing rod (202) and the rotating sleeve (2); When the rotating sleeve (2) rotates, it drives multiple mixing rods (202) to rotate synchronously. During the rotation, the mixing rods (202) drive the first and second actuating parts to move synchronously inside the fermentation tank. During the rotation, the first actuating part can generate an upward lifting force on the straw fragments in the edge area inside the fermentation tank, while the second actuating part can generate a downward pressing force on the straw fragments in the middle area inside the fermentation tank, thereby forming a vertical circulation of straw fragments inside the fermentation tank.

2. The stirrer for corn stalk fermentation according to claim 1, characterized in that, The first actuating part includes an inclined actuating plate two (204), which is mounted on the mixing rod (202). Multiple actuating plates two (204) are provided, and the multiple actuating plates two (204) are equidistantly distributed along the length direction of the mixing rod (202). The second actuating part includes an inclined actuating plate (203), which is connected between the mixing rod (202) and the rotating sleeve (2). Multiple actuating plates (203) are provided, and the multiple actuating plates (203) are equidistantly distributed along the connection area between the mixing rod (202) and the rotating sleeve (2). The inclination direction of the actuating plates (203) is opposite to that of the second actuating plate (204).

3. The stirrer for corn stalk fermentation according to claim 2, characterized in that, The rotating sleeve (2) and the mixing rod (202) are both integrally formed with a connecting sleeve (201). A drive shaft (302) is rotatably connected inside the connecting sleeve (201). The first actuating plate (203) is sleeved on the connecting sleeve (201) and fixedly connected to the drive shaft (302). The rotating sleeve (2) is provided with a rotating shaft (3) in the opposite direction of its rotation. A second bevel gear (304) is fixedly installed on the rotating shaft (3). A first bevel gear (303) that meshes with the second bevel gear (304) is fixedly installed on the drive shaft (302). The first bevel gear (303) has more teeth than the second bevel gear (304).

4. The stirrer for corn stalk fermentation according to claim 3, characterized in that, The cavity inside the mixing rod (202) is rotatably connected to a plurality of rotating shafts (4) corresponding to the second actuating plate (204). The second actuating plate (204) is fixedly connected to one end of the rotating shaft (4). Each rotating shaft (4) is fixedly mounted with a pulley (401). The plurality of pulleys (401) are connected to each other by a belt (402). One end of the drive shaft (302) is pre-grooved with a groove, in which a toothed ring (404) is fixedly mounted. A third gear (403) that meshes with the toothed ring (404) is fixedly mounted on the rotating shaft (4).

5. The stirrer for corn stalk fermentation according to claim 3, characterized in that, It also includes a drive box (1) set on the fermenter. A second gear (103) is fixedly installed on one end of the rotating sleeve (2) that passes through the drive box (1). A first gear (102) that meshes with the second gear (103) is provided in the drive box (1). A motor one (101) and a motor two (104) are fixedly installed on the drive box (1). The first gear (102) is fixedly installed on the output end of the motor one (101). The rotating shaft (3) passes through one end of the drive box (1) and is fixedly connected to the output end of the motor two (104).

6. The stirrer for corn stalk fermentation according to claim 3, characterized in that, Multiple mounting seats (5) are equidistantly arranged on the rotating shaft (3) and the mixing rod (202). A pressure plate (501) is rotatably connected to the mounting seat (5) via a fixed shaft (503). The pressure plate (501) is located below the actuating plate (203). Mounting cavities (502) are opened at both ends of the mounting seat (5). A rotating ring (504) is integrally formed on one end of the fixed shaft (503) that passes through the mounting cavity (502). A torsion spring (505) is set in the mounting cavity (502), with one end fixedly connected to the rotating ring (504) and the other end fixedly connected to the inner wall of the mounting cavity (502).

7. The stirrer for corn stalk fermentation according to claim 6, characterized in that, Multiple drainage grooves (506) are provided at equal intervals on the mating surfaces of the two pressure plates (501).

8. The stirrer for corn stalk fermentation according to claim 7, characterized in that, The two sides of the drain trough (506) are inclined downwards.

9. The stirrer for corn stalk fermentation according to claim 4, characterized in that, An elastic pad (205) is provided on the side wall of the second actuating plate (204), and the elastic pad (205) is in contact with the inner wall of the fermentation tank.

10. The stirrer for corn stalk fermentation according to claim 5, characterized in that, The rotating shaft (3) extends out of the lower end of the rotating sleeve (2) and a plurality of disturbance rods (301) are equidistantly arranged on the outer wall of one end. The disturbance rods (301) are in contact with the inner wall of the lower end of the fermentation tank.

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