A stirring fermentation machine for biomass preparation
By designing a stirring fermenter for biomass preparation with a servo motor, a self-swing mechanism and a telescopic bidirectional stirring mechanism, the problems of low stirring efficiency and high energy consumption in the prior art are solved, and more efficient biomass fermentation and lower energy consumption and failure rates are achieved.
Patent Information
- Application Number
- CN202510069505.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-04-08
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When used, the existing stirring fermenters for biomass preparation have poor mixing efficiency and effect, and are relatively high in energy consumption and failure rates.
A stirring fermenter for biomass preparation including a servo motor, a self-swing mechanism, a telescopic bidirectional stirring mechanism and a sealing mechanism is designed. By driving the driving gear to drive the driven main gear and the driven secondary gear to rotate, the swing of the fermentation tank and the reciprocating rotation and expansion of the mixing rack, improving the stirring efficiency.
This stirring fermenter for biomass preparation not only improves the mixing efficiency of biomass and yeast, reduces energy consumption and failure rate, and achieves more efficient biomass fermentation.
Smart Images
Figure CN119776123A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of biomass fermentation, in particular to a stirring fermentation machine for biomass preparation. Background Art
[0002] Using biomass to prepare biofuels, bio-based chemicals and biofertilizers is an important direction for the development of biomass resources. In these biomass conversion processes, fermentation is a key link, and the stirring fermentation machine can effectively promote the fermentation process and improve the conversion efficiency of biomass. The existing stirring fermentation machine for biomass preparation still has the following technical problems when in use, such as: 1. The existing stirring fermentation machine for biomass preparation has poor stirring efficiency and effect when in use. The main reason is that the stirring structure inside the existing fermentation machine is fixed in position, so that the stirring effect on the biomass is insufficient during stirring, which is not conducive to the rapid and sufficient mixing of the biomass and yeast in the fermentation machine, so that the efficiency of biomass fermentation is reduced; 2. The existing biomass preparation stirring fermentation machine has relatively high energy consumption and failure rate when in use. This is because in order to improve the efficiency and effect of stirring, the existing fermentation machine will add a motor to make the tank body of the fermentation machine swing. However, due to the addition of the motor, the energy consumption increases and the failure rate also increases; Therefore, a stirring fermentation machine for biomass preparation is needed to solve the above problems. Summary of the invention
[0003] The object of the present invention is to provide a stirring fermentation machine for biomass preparation to solve the problems of poor stirring efficiency and effect, and relatively high energy consumption and failure rate of the existing stirring fermentation machines for biomass preparation mentioned in the above background technology.
[0004] To achieve the above object, the present invention provides the following technical solutions: A stirring and fermenting machine for biomass preparation comprises a base, a servo motor, a self-swinging mechanism, a telescopic two-way stirring mechanism and a sealing and locking mechanism, wherein a supporting vertical plate is arranged on the upper surface of the base, and the supporting vertical plate is connected to a fermentation tank through a self-swinging mechanism, the servo motor is installed at one end of the fermentation tank through a mounting frame, the servo motor is connected to a driven main gear through a driving gear, and the driven main gear is key-connected to the outer side of one end of a supporting tube, the bearing at the other end of the supporting tube penetrates and extends into the interior of the fermentation tank coaxial with the supporting tube, a telescopic two-way stirring mechanism is arranged on the part of the supporting tube extending into the fermentation tank, and a sealing and locking mechanism is installed at the other end of the fermentation tank for sealing the fermentation tank.
[0005] Preferably, the middle part of the fermentation tank is rotatably connected to the middle part of the shaft sleeve, and the shaft sleeve bearing is connected to the middle part of the upper end of the support frame, and the lower end of the support frame is fixedly connected to the upper surface of the base.
[0006] Preferably, the self-swinging mechanism includes an inner gear ring, a bevel gear ring and a fixed bevel gear, the fixed bevel gear is fixedly connected to the upper end of the supporting vertical plate, and the axis of the supporting vertical plate and the axis of the fixed bevel gear are arranged perpendicular to each other, the bevel gear ring is meshingly connected to the fixed bevel gear, and the fixed bevel gear is sleeved on the outside of the fermentation tank, the inner gear ring is fixedly connected to the bevel gear ring as a whole, and the inner diameter of the bevel gear ring is the same as the inner diameter of the outer ring side of the inner gear ring, the inner gear ring bearing is connected to one end of the fermentation tank, and the inner side of the inner gear ring is also meshingly connected to the driving gear.
[0007] Preferably, the axis of the fermenter is arranged to be inclined with respect to the axis of the fixed bevel gear, and the fermenter is a tubular structure with one end being open, and the sealing locking mechanism is arranged at the open end.
[0008] Preferably, the sealing locking mechanism includes a locking ring, a sealing cover and a torsion spring, the locking ring bearing is connected to the outside of the open end of the fermentation tank, and a torsion spring is also arranged between the two, so that the locking ring can automatically reset after rotating relative to the fermentation tank, a pawl is arranged on the inner side of the locking ring extending out of the open end of the fermentation tank, and limiting teeth matching the pawl are distributed on the outer side of the sealing cover, and the part of the sealing cover extending into the inside of the open end of the fermentation tank is a truncated cone structure made of elastic material.
[0009] Preferably, the locking ring and the sealing cover are both provided with handles, and the arc angles of the pawls provided on the locking ring and the limiting teeth provided on the sealing cover do not exceed 90°, so as to facilitate complete misalignment of the mutually meshing limiting teeth and pawls, and two groups of pawls and limiting teeth are each provided, and the two groups of pawls and the two groups of limiting teeth are symmetrical about the axis center of the fermentation tank.
[0010] Preferably, the telescopic bidirectional stirring mechanism comprises a crankshaft, a piston tube and a spring telescopic tube, the internal bearing of the support tube is connected to the crankshaft, and both ends of the crankshaft are coaxially arranged with the support tube, the bearing of one end of the crankshaft close to the bevel gear ring penetrates to the outside of the fermenter, and the outer side of the end of the crankshaft close to the bevel gear ring is keyed to a driven secondary gear, the driven secondary gear is meshed with the transmission gear, and the transmission gear is keyed to the outside of the gear shaft, the gear shaft bearing is connected to one end of the fermenter, and the gear shaft is also keyed with a reduction gear, the reduction gear is meshed with the driven main gear, so as to realize the driven main gear and the driven secondary gear. For the purpose of the gear rotating at different speeds, the piston tube is distributed on the outside of the support tube, and the support tube and the piston tube are arranged through-connected, each piston tube is seamlessly and slidably connected with a corresponding piston disk, and one side of the piston disk is rotatably connected with one end of a connecting arm, and the other end of the connecting arm is penetrated by a bearing at a corresponding position of the crankshaft, and a screw shaft is connected to a coaxial bearing on the other side of the piston disk, and the screw shaft threadedly penetrates the corresponding piston tube convex end, and a corresponding stirring frame is fixedly connected to the end of the screw shaft penetrating the piston tube convex end, and a spring telescopic tube wrapping the screw shaft is arranged between the stirring frame and the corresponding piston tube convex end.
[0011] Preferably, the spring telescopic tube is connected to the corresponding stirring frame by a bearing seal to facilitate the rotation of the stirring frame, and the stirring frame is a square-shaped structure.
[0012] Preferably, the threads arranged on the outer side of the screw shaft and the inner side of the threaded hole arranged at the raised end of the piston tube are twist threads that match each other.
[0013] Preferably, the distance between each piston disk and the rotation axis of the crankshaft is different, so that the stirring frames at different positions have different extension and contraction degrees at each time point, which helps to improve the efficiency and effect of stirring.
[0014] Compared with the prior art, the beneficial effects of the present invention are: the stirring fermentation machine for biomass preparation can not only make the fermentation tank swing, so that the biomass and yeast can shake back and forth inside the fermentation tank, but also make the stirring frame reciprocate and rotate while reciprocating and extending, thereby helping to improve the efficiency and effect of stirring: 1. Through the operation of the servo motor, not only can the driving gear drive the driven main gear to rotate, and then drive the support tube to rotate, so as to drive the telescopic two-way stirring mechanism to rotate, so as to achieve the purpose of stirring the biomass in the fermentation tank, but the driving gear will also drive the inner gear ring to rotate. During the rotation of the inner gear ring, it can also drive the bevel gear ring to rotate synchronously, so that the bevel gear rotates around the fixed bevel gear, so as to achieve the purpose of swinging the fermentation tank under the support of the support frame and the shaft sleeve. Through the swing of the fermentation tank, the biomass inside it can be shaken, which is conducive to biomass fermentation; 2. During the rotation of the driven main gear, the reduction gear is also driven to rotate, and then the driven secondary gear is rotated through the transmission gear, so that the driven secondary gear and the driven main gear rotate at different speeds. When the two rotate at different speeds, a speed difference can be generated between the support tube and the crankshaft, so that the crankshaft can drive the piston disc to move back and forth in the piston tube. When the piston disc moves back and forth, the stirring frame is driven to move back and forth through the screw shaft. At the same time, the screw shaft also drives the stirring frame to rotate back and forth, which helps to improve the stirring efficiency and effect, thereby facilitating biomass fermentation; 3. By setting the limiting teeth and the ratchet claws, the sealing cover can be tightly connected to the open end of the fermentation tank, thereby ensuring the sealing inside the fermentation tank, preventing biomass from falling from the open end of the fermentation tank, and ensuring the stable fermentation. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the longitudinal cross-sectional structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of point A; Figure 5 It is a cross-sectional structural schematic diagram of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of point B in the middle; Figure 7 For the present invention Figure 5 The schematic diagram of the enlarged structure of point C in the middle; Figure 8 This is a schematic diagram of the cross-sectional structure of the connection between the support tube and the crankshaft of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at point D.
[0016] In the figure: 1. base; 2. support frame; 3. bushing; 4. fermentation tank; 5. locking ring; 6. mounting frame; 7. servo motor; 8. inner gear ring; 9. bevel gear ring; 10. fixed bevel gear; 11. support vertical plate; 12. sealing cover; 13. support tube; 14. crankshaft; 15. driven main gear; 16. reduction gear; 17. transmission gear; 18. gear shaft; 19. driven secondary gear; 20. stirring frame; 21. driving gear; 22. piston tube; 23. limit gear; 24. ratchet; 25. torsion spring; 26. connecting arm; 27. piston disc; 28. screw shaft; 29. spring telescopic tube. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.
[0018] See also Figure 1-Figure 9 , the present invention provides the following technical solutions: Embodiment 1: In order to solve the problem that in the past, a stirring fermentation machine for biomass preparation had to add a motor to make the tank body thereon swing, thereby causing a relatively increased energy consumption and failure rate, the following technical solution is provided, specifically, a stirring fermentation machine for biomass preparation, including a base 1, a servo motor 7, a self-swinging mechanism, a telescopic two-way stirring mechanism and a sealing locking mechanism. A support vertical plate 11 is provided on the upper surface of the base 1, and the support vertical plate 11 is connected to the fermentation tank 4 through the self-swinging mechanism. The servo motor 7 is installed at one end of the fermentation tank 4 through the mounting frame 6. The servo motor 7 is connected to the driven main gear 15 through the driving gear 21, and the driven main gear 15 is keyed to the outer side of one end of the support tube 13, and the bearing at the other end of the support tube 13 extends through and extends into the interior of the fermentation tank 4 coaxial with it.
[0019] The middle part of the fermentation tank 4 is rotatably connected to the middle part of the shaft sleeve 3 , and the shaft sleeve 3 is bearing-connected to the middle part of the upper end of the support frame 2 , and the lower end of the support frame 2 is fixedly connected to the upper surface of the base 1 .
[0020] The self-swinging mechanism includes an inner gear ring 8, an umbrella gear ring 9 and a fixed umbrella gear 10. The fixed umbrella gear 10 is fixedly connected to the upper end of the support vertical plate 11, and the axis of the support vertical plate 11 and the axis of the fixed umbrella gear 10 are arranged perpendicular to each other. The umbrella gear ring 9 is meshed and connected to the fixed umbrella gear 10, and the fixed umbrella gear 10 is sleeved on the outer side of the fermentation tank 4. The inner gear ring 8 is fixedly connected with the umbrella gear ring 9 as a whole, and the inner diameter of the umbrella gear ring 9 is the same as the inner diameter of the outer ring side of the inner gear ring 8. The inner gear ring 8 is connected to one end of the fermentation tank 4 with a bearing, and the inner side of the inner gear ring 8 is also meshed and connected to the driving gear 21. When the internal gear ring 8 is rotated, the rotation of the driving gear 21 drives the bevel gear ring 9 with which it is an integral structure to rotate. When the bevel gear ring 9 rotates, it rotates around the fixed bevel gear 10, so that the fermenter 4 swings under the four-way rotating structure formed by the shaft sleeve 3 and the support frame 2, avoiding the problem of increased energy consumption and increased failure rate caused by the need to add an additional motor to drive the fermenter 4 to swing in the past. The axis of the fermenter 4 is inclined to the axis of the fixed bevel gear 10, and the fermenter 4 is a tubular structure with an open end, and a sealing locking mechanism is arranged at its open end.
[0021] Embodiment 2: In order to solve the problem of poor stirring efficiency and effect of stirring fermentation machines used for biomass preparation in the past, the following technical solution is provided. Specifically, a telescopic two-way stirring mechanism is provided on the part of the support tube 13 extending into the fermentation tank 4, and a sealing locking mechanism is installed at the other end of the fermentation tank 4 for sealing the fermentation tank 4.
[0022] The sealing locking mechanism includes a locking ring 5, a sealing cover 12 and a torsion spring 25. The locking ring 5 is bearing-connected to the outer side of the open end of the fermentation tank 4, and a torsion spring 25 is also arranged between the two, so that the locking ring 5 can automatically reset after rotating relative to the fermentation tank 4. A ratchet 24 is arranged on the inner side of the locking ring 5 extending out of the open end of the fermentation tank 4, and limiting teeth 23 matching the ratchet 24 are distributed on the outer side of the sealing cover 12, and the part of the sealing cover 12 extending into the inner side of the open end of the fermentation tank 4 is a truncated cone structure made of elastic material. When in use, the sealing cover 12 is directly pressed against the open end of the fermentation tank 4, so that the sealing cover 12 seals the open end of the fermentation tank 4. In this process, the connection degree between the limiting teeth 23 and the ratchet 24 will gradually increase, thereby avoiding the sealing cover 12 and the open end of the fermentation tank 4. Separation, when the fermentation tank 4 and the sealing cover 12 are tightly connected, the friction between the two can prevent the sealing cover 12 from rotating, and then prevent the limiting teeth 23 and the ratchet 24 from being completely misaligned, further ensuring the tightness of the connection between the fermentation tank 4 and the sealing cover 12. The locking ring 5 and the sealing cover 12 are both provided with handles, and the arc angles of the ratchet 24 provided on the locking ring 5 and the limiting teeth 23 provided on the sealing cover 12 are not more than 90°, so that the limiting teeth 23 and the ratchet 24 that are engaged with each other are completely misaligned. The ratchet 24 and the limiting teeth 23 are both provided with two groups, and the two groups of ratchet 24 and the two groups of limiting teeth 23 are symmetrical about the axis center of the fermentation tank 4. The telescopic two-way stirring mechanism includes a crankshaft 14, a piston tube 22 and a spring telescopic tube 29, and the internal bearing of the support tube 13 is connected A crankshaft 14 is provided, and both ends of the crankshaft 14 are coaxially arranged with the support tube 13. The bearing of one end of the crankshaft 14 close to the bevel gear ring 9 penetrates the outside of the fermentation tank 4, and the outer side of the end of the crankshaft 14 close to the bevel gear ring 9 is keyed with a driven secondary gear 19, the driven secondary gear 19 is meshed with a transmission gear 17, and the transmission gear 17 is keyed to the outer side of a gear shaft 18, the gear shaft 18 is bearing-connected to one end of the fermentation tank 4, and a reduction gear 16 is keyed on the gear shaft 18, the reduction gear 16 is meshed with a driven main gear 15, and is used to achieve the purpose of rotating the driven main gear 15 and the driven secondary gear 19 at different speeds, the piston tube 22 is distributed on the outer side of the support tube 13, and the support tube 13 and the piston tube 22 are through-arranged, and each piston tube 22 has no The corresponding piston disc 27 is slidably connected to the seam, and one side of the piston disc 27 is rotatably connected to one end of the connecting arm 26, and the other end of the connecting arm 26 is penetrated by the bearing at the corresponding part of the crankshaft 14, and the other side of the piston disc 27 is coaxially connected to the screw shaft 28, and the screw shaft 28 threadedly penetrates the corresponding protruding end of the piston tube 22, and the end of the screw shaft 28 penetrating the protruding end of the piston tube 22 is fixedly connected to the corresponding stirring frame 20, and a spring telescopic tube 29 wrapping the screw shaft 28 is arranged between the stirring frame 20 and the corresponding protruding end of the piston tube 22. When in use, the speed difference between the support tube 13 and the crankshaft 14 is generated through the reduction gear 16, so that when the support tube 13 rotates, the crankshaft 14 drives the piston disc 27 to move in the piston tube 22 through the connecting arm 26.When the piston disc 27 moves, it will drive the screw shaft 28 connected to it to move synchronously. In addition, the screw shaft 28 is connected to the bearing at the raised end of the piston tube 22, so that the screw shaft 28 can rotate during the movement, thereby driving the stirring frame 20 to move back and forth while rotating back and forth, which helps to improve the efficiency and effect of stirring and achieve the purpose of increasing the fermentation efficiency. The spring expansion tube 29 is sealed with the corresponding stirring frame 20 to facilitate the rotation of the stirring frame 20. The stirring frame 20 is a square structure. The threads arranged on the outer side of the screw shaft 28 and the inner side of the threaded hole arranged at the raised end of the piston tube 22 are mutually matching twist threads. The distance between each piston disc 27 and the rotation axis of the crankshaft 14 is different, which is used to achieve that the stirring frame 20 at different positions has different degrees of expansion and contraction at each time point, which helps to improve the efficiency and effect of stirring.
[0023] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0024] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A stirring fermentation machine for biomass preparation, comprising a base (1), a servo motor (7), a self-swinging mechanism, a telescopic bidirectional stirring mechanism and a sealing locking mechanism, characterized in that: A support vertical plate (11) is provided on the upper surface of the base (1), and the support vertical plate (11) is connected to the fermentation tank (4) through a self-swinging mechanism. The servo motor (7) is installed at one end of the fermentation tank (4) through a mounting frame (6). The servo motor (7) is connected to a driven main gear (15) through a driving gear (21), and the driven main gear (15) is key-connected to the outer side of one end of the support tube (13). The bearing at the other end of the support tube (13) extends through and extends into the interior of the fermentation tank (4) coaxial with the support tube (13). A telescopic bidirectional stirring mechanism is provided on the portion of the support tube (13) extending into the fermentation tank (4). A sealing locking mechanism is installed at the other end of the fermentation tank (4) for sealing the fermentation tank (4).
2. A stirring fermentation machine for biomass preparation according to claim 1, characterized in that: The middle part of the fermentation tank (4) is rotatably connected to the middle part of the shaft sleeve (3), and the shaft sleeve (3) bearing is connected to the middle part of the upper end of the support frame (2), and the lower end of the support frame (2) is fixedly connected to the upper surface of the base (1).
3. A stirring fermentation machine for biomass preparation according to claim 2, characterized in that: The self-swinging mechanism comprises an inner gear ring (8), an umbrella gear ring (9) and a fixed umbrella gear (10); the fixed umbrella gear (10) is fixedly connected to the upper end of a supporting vertical plate (11), and the axis of the supporting vertical plate (11) and the axis of the fixed umbrella gear (10) are arranged perpendicular to each other; the umbrella gear ring (9) is meshingly connected to the fixed umbrella gear (10), and the fixed umbrella gear (10) is sleeved on the outer side of the fermentation tank (4); the inner gear ring (8) is integrally fixedly connected to the umbrella gear ring (9), and the inner diameter of the umbrella gear ring (9) is the same as the inner diameter of the outer ring side of the inner gear ring (8); the inner gear ring (8) is bearing-connected to one end of the fermentation tank (4), and the inner side of the inner gear ring (8) is also meshingly connected to the driving gear (21).
4. The stirring fermentation machine for biomass preparation according to claim 3, characterized in that: The axis of the fermentation tank (4) is arranged to be inclined with respect to the axis of the fixed bevel gear (10), and the fermentation tank (4) is a tubular structure with an open end, and a sealing locking mechanism is arranged at the open end.
5. The stirring fermentation machine for biomass preparation according to claim 4, characterized in that: The sealing locking mechanism comprises a locking ring (5), a sealing cover (12) and a torsion spring (25); the locking ring (5) is bearing-connected to the outside of the open end of the fermentation tank (4), and a torsion spring (25) is arranged between the two so as to automatically reset the locking ring (5) after rotating relative to the fermentation tank (4); a ratchet (24) is arranged on the inner side of the portion of the locking ring (5) extending out of the open end of the fermentation tank (4); limiting teeth (23) matching the ratchet (24) are arranged on the outer side of the sealing cover (12); and the portion of the sealing cover (12) extending into the inside of the open end of the fermentation tank (4) is a truncated cone-shaped structure made of elastic material.
6. A stirring fermentation machine for biomass preparation according to claim 5, characterized in that: The locking ring (5) and the sealing cover (12) are both provided with a handle, and the pawl (24) provided on the locking ring (5) and the limiting tooth (23) provided on the sealing cover (12) have an arc angle of no more than 90°, so that the limiting tooth (23) and the pawl (24) that mesh with each other are completely misaligned, and the pawl (24) and the limiting tooth (23) are both provided in two groups, and the two groups of pawls (24) and the two groups of limiting teeth (23) are both symmetrical about the axis center of the fermentation tank (4).
7. A stirring fermentation machine for biomass preparation according to claim 6, characterized in that: The telescopic bidirectional stirring mechanism comprises a crankshaft (14), a piston tube (22) and a spring telescopic tube (29); the crankshaft (14) is connected to an internal bearing of the support tube (13); and both ends of the crankshaft (14) are coaxially arranged with the support tube (13); the bearing of one end of the crankshaft (14) close to the bevel gear ring (9) penetrates the outside of the fermentation tank (4); and the outer side of one end of the crankshaft (14) close to the bevel gear ring (9) is keyed to a driven secondary gear (19); the driven secondary gear (19) is meshedly connected to a transmission gear (17); and the transmission gear (17) is keyed to the outer side of a gear shaft (18); the gear shaft (18) is bearing-connected to one end of the fermentation tank (4); and a reduction gear (16) is keyed to the gear shaft (18); the reduction gear (16) is meshedly connected to a driven main gear (15) for realizing the transmission of the driven main gear (15) and the driven secondary gear (19). The gear (19) is rotated at different speeds. The piston tube (22) is distributed on the outside of the support tube (13), and the support tube (13) and the piston tube (22) are arranged in a through-connected manner. Each piston tube (22) is seamlessly and slidably connected with a corresponding piston disc (27), and one side of the piston disc (27) is rotatably connected with one end of a connecting arm (26), and the other end of the connecting arm (26) is penetrated by a bearing at a corresponding position of the crankshaft (14). The other side of the piston disc (27) is coaxially bearing-connected with a screw shaft (28), and the screw shaft (28) is threadedly penetrated through the corresponding protruding end of the piston tube (22). The end of the screw shaft (28) penetrating the protruding end of the piston tube (22) is fixedly connected with a corresponding stirring frame (20), and a spring telescopic tube (29) wrapping the screw shaft (28) is arranged between the stirring frame (20) and the corresponding protruding end of the piston tube (22).
8. The stirring fermentation machine for biomass preparation according to claim 7, characterized in that: The spring telescopic tube (29) is connected to the corresponding stirring frame (20) in a bearing seal, which facilitates the rotation of the stirring frame (20), and the stirring frame (20) is a square-shaped structure.
9. A stirring fermentation machine for biomass preparation according to claim 8, characterized in that: The threads arranged on the outer side of the screw shaft (28) and the inner side of the threaded hole arranged at the protruding end of the piston tube (22) are twist threads that match each other.
10. The stirring fermentation machine for biomass preparation according to claim 9, characterized in that: The distances between each piston disk (27) and the rotation axis of the crankshaft (14) are different, so that the stirring racks (20) at different positions have different degrees of expansion and contraction at each time point, which helps to improve the efficiency and effect of stirring.