A continuous straw fermentation device for preparing biofuel

Abstract

The utility model discloses a kind of straw continuous fermentation device for preparing biofuel, including the box body of top end connection with box cover, detachably connected with fermentation cylinder in the box body, connected with feeding pipe and quantitative feeder on the box cover, connected with exhaust pipe on the box cover, dynamic control mechanism is equipped on the fermentation cylinder, the dynamic control mechanism includes temperature control module and PH adjusting module, the bottom end of fermentation cylinder is equipped with the blanking plate connected with fermentation cylinder by drive shaft, vibration screening mechanism is equipped below fermentation cylinder, the bottom end of box body is connected with discharge pipe, the vibration screening mechanism includes filter screen one, the side of filter screen one is equipped with compression mechanism.In the utility model, by setting vibration screening mechanism, discharge pipe, exhaust pipe and compression mechanism, not only can direct discharge to fermentation product, but also can carry out solid-liquid gas separation discharge to fermentation product, save time and effort, greatly improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of straw fermentation technology, and in particular to a continuous straw fermentation device for preparing biofuels. Background Technology

[0002] The preparation of biofuels using straw fermentation technology involves the following processes: raw material pretreatment, bioconversion, and product separation and utilization. An existing patent (publication number: CN218404016U) discloses an agricultural straw fermentation device. This invention uses a motor, a rotating rod, and a stirring rod. The motor drives the stirring rod to mix the straw, increasing the contact area between the straw and microorganisms and improving fermentation efficiency. However, in practical applications, because this invention lacks any discharge structure, it is difficult to directly collect the fermentation products and separate the solid and liquid products. Additional separation processing is required to achieve the desired separation effect, which is time-consuming, labor-intensive, and reduces work efficiency, hindering practical application. Therefore, we propose a continuous straw fermentation device for preparing biofuels. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a continuous straw fermentation device for preparing biofuels.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] Design a continuous straw fermentation device for preparing biofuel, comprising a box body with a lid at the top, a fermentation cylinder detachably connected inside the box body, a feeding pipe and a metering feeder connected to the lid, an exhaust pipe connected to the lid, a rotating shaft inside the fermentation cylinder, the rotating shaft being drivenly connected to a servo motor mounted on the lid, a stirring shaft evenly distributed on the rotating shaft, a dynamic control mechanism on the fermentation cylinder including a temperature control module and a pH adjustment module, a feeding plate connected to the fermentation cylinder via a drive shaft at the bottom of the fermentation cylinder, a vibrating screening mechanism below the fermentation cylinder, a discharge pipe connected to the bottom of the box body, the vibrating screening mechanism including a first filter screen, a compression mechanism on one side of the filter screen, the compression mechanism including a compression box, a second filter screen, and a pressure plate.

[0006] In the above scheme, blades are evenly installed on the inner wall of the feeding pipe.

[0007] In the above scheme, the temperature control module includes a temperature sensor installed on the fermentation tank, the stirring shaft includes a heat-conducting shell with an electric heating rod inside, the electric heating rod is connected to the heat-conducting shell through a limiting sleeve, the outer wall of the fermentation tank is covered with a heat exchange jacket, and the pH adjustment module includes a pH sensor installed on the fermentation tank.

[0008] In the above scheme, the fermentation cylinder is inverted cone shape, a bearing ring is fixed to the inner wall of the box, and a support ring is fixed to the top of the fermentation cylinder and suspended on the bearing ring.

[0009] In the above scheme, the vibrating screening mechanism includes a vibrating motor, the filter screen is inclined towards the side close to the compression mechanism, a frame is fixed on the outside of the filter screen, the vibrating motor is connected to the frame, and guide blocks are provided on both sides of the bottom of the box.

[0010] In the above scheme, the box body has a discharge port located above the bottom of the filter screen, the compression box has a feed port connected to the discharge port, the top of the compression box is equipped with a cylinder whose stroke end is connected to the pressure plate through a lifting frame, the bottom of the filter screen is provided with a return pipe communicating with the box body, and the side of the compression box away from the feed port has a discharge port located above the filter screen.

[0011] In the above scheme, a guide block 2 is laid at the bottom of the compression box, a magnetic cover plate is movably connected inside the discharge port, and a magnetic block with the opposite magnetism to that of the magnetic cover plate is provided on the outer wall of the compression box.

[0012] The advantages and beneficial effects of this utility model are as follows: By setting up a fermentation cylinder, a feeding plate, a quantitative feeder, and a feeding pipe, the pre-treated straw is placed into the fermentation cylinder using the feeding pipe. The quantitative feeder then adds fermenting microorganisms and acid / alkali reagents. Compared to existing technologies, the use of a drive shaft to rotate the feeding plate controls the timing of feeding into the fermentation cylinder, improving automation. Furthermore, by setting up a vibrating screening mechanism, a discharge pipe, an exhaust pipe, and a compression mechanism, the exhaust pipe discharges the gases produced during fermentation. The vibrating screening mechanism separates the fermentation products into solid and liquid components, allowing the liquid to be discharged from the discharge pipe and the solid to be discharged to the compression mechanism for secondary processing, further removing the mixed liquid. Compared to existing technologies, this method not only allows for direct discharge of fermentation products but also enables solid-liquid-gas separation, saving time and labor, significantly improving work efficiency and practicality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a cross-sectional view of a straw continuous fermentation device for preparing biofuels according to the present invention;

[0015] Figure 2This is a schematic diagram of the stirring shaft of a continuous straw fermentation device for preparing biofuels, as proposed in this utility model.

[0016] In the diagram: 1. Box body; 2. Box cover; 3. Feeding pipe; 4. Blade; 5. Quantitative feeder; 6. Servo motor; 7. Rotating shaft; 8. Stirring shaft; 81. Heat-conducting shell; 82. Heating rod; 83. Limiting sleeve; 9. Fermentation cylinder; 10. Heat exchange jacket; 11. Drive shaft; 12. Feeding plate; 13. pH sensor; 14. Temperature sensor; 15. Frame; 16. Filter screen one; 17. Vibration motor; 18. Guide block one; 19. Discharge pipe; 20. Discharge port; 21. Compression box; 22. Feed inlet; 23. Filter screen two; 24. Cylinder; 25. Lifting frame; 26. Pressure plate; 27. Guide block two; 28. Return pipe; 29. ​​Discharge port; 30. Magnetic cover plate; 31. Bearing ring; 32. Magnetic block; 33. Support ring; 34. Exhaust pipe. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0018] Please see Figure 1-2 This utility model provides a technical solution: a straw continuous fermentation device for preparing biofuel, including a box body 1 with a box cover 2 connected to the top. The box cover 2 and the box body 1 are connected by a flange for easy disassembly so as to maintain the internal structure of the box body 1. A fermentation cylinder 9 is detachably connected inside the box body 1.

[0019] Furthermore, the fermentation cylinder 9 is inverted cone shape, which increases the saturation of straw inside the fermentation cylinder 9 to a certain extent, so as to fully contact with fermentation microorganisms and promote the reaction. The inner wall of the box 1 is fixed with a bearing ring 31, and the top of the fermentation cylinder 9 is fixed with a support ring 33 suspended on the bearing ring 31. The fermentation cylinder 9 can be taken out by continuously moving it upward.

[0020] The box cover 2 is connected to the feeding pipe 3 and the quantitative feeder 5;

[0021] Specifically, at least three quantitative feeders 5 are provided, which are used to quantitatively add fermenting microorganisms, acidic reagents and alkaline reagents respectively. The quantitative feeders 5 are electric models.

[0022] Furthermore, blades 4 are evenly installed on the inner wall of the feeding pipe 3; when the straw falls along the feeding pipe 3, the straw will rub against the blades 4 to be further cut, reducing the volume of the straw, thereby allowing the straw to fully contact the microorganisms.

[0023] An exhaust pipe 34 is connected to the cover 2, and the other end of the exhaust pipe 34 is connected to a gas collection device. The opening and closing of the connection pipe is controlled by a valve. A rotating shaft 7 is provided inside the fermentation tank 9. The rotating shaft 7 is connected to a servo motor 6 installed on the cover 2. The rotating shaft 7 is connected to the output shaft of the servo motor 6 through a coupling. A stirring shaft 8 is evenly provided on the rotating shaft 7. The servo motor 6 provides power to make the rotating shaft 7 rotate, thereby making the stirring shaft 8 fully mix the straw and microorganisms. The fermentation tank 9 is equipped with a dynamic control mechanism, which includes a temperature control module and a pH adjustment module.

[0024] Furthermore, the temperature control module includes a temperature sensor 14 installed on the fermentation tank 9. The sensing end of the temperature sensor 14 is located inside the fermentation tank 9 and is used to detect the temperature inside the fermentation tank 9. The stirring shaft 8 includes a heat-conducting shell 81 with an electric heating rod 82 inside. The electric heating rod 82 is used to heat the fermentation environment inside the fermentation tank 9. The heat-conducting shell 81 is fixed to the rotating shaft 7. The electric heating rod 82 is connected to the heat-conducting shell 81 through a limiting sleeve 83 to limit the installation position of the electric heating rod 82 and prevent it from moving. The outer wall of the fermentation tank 9 is covered with a heat exchange jacket 10. The heat exchange jacket 10 is connected to an external heat exchange device. A heat exchange medium is circulated into the heat exchange jacket 10 through a pipeline to promote cooling and heating. The pH adjustment module includes a pH sensor 13 installed on the fermentation tank 9. The sensing end of the pH sensor 13 is located inside the fermentation tank 9 and is used to detect the pH value inside the fermentation tank 9. Combined with the quantitative feeder 5, the pH value is adjusted.

[0025] The bottom end of the fermentation cylinder 9 is provided with a feeding plate 12 connected to the fermentation cylinder 9 via a drive shaft 11. In actual application, a servo motor is installed on the fermentation cylinder 9. The servo motor can be connected to the drive shaft 11 via gear or pulley transmission to adjust the rotation angle of the drive shaft 11, thereby allowing the feeding plate 12 to switch between vertical and horizontal states.

[0026] Specifically, by setting up a fermentation cylinder 9, a feeding plate 12, a quantitative feeder 5, and a feeding pipe 3, the pre-treated straw is placed into the fermentation cylinder 9 using the feeding pipe 3. The quantitative feeder 5 is used to add fermentation microorganisms and acid-base reagents respectively. Compared with the existing technology, the feeding timing of the fermentation cylinder 9 is controlled by using a drive shaft 11 to drive the feeding plate 12 to rotate. This improves the degree of automation.

[0027] A vibrating screening mechanism is provided below the fermentation tank 9, and a discharge pipe 19 is connected to the bottom of the box 1. The vibrating screening mechanism includes a filter screen 16.

[0028] Furthermore, the vibrating screening mechanism includes a vibrating motor 17, a filter screen 16 tilted towards the side closer to the compression mechanism, a frame 15 fixed to the outside of the filter screen 16, and the vibrating motor 17 connected to the frame 15. The vibrating motor 17 is used to vibrate the filter screen 16, causing the solid material to move towards the bottom of the filter screen 16, preventing the solid material from clogging the filter screen 16. Guide blocks 18 are provided on both sides of the bottom of the box 1. The guide blocks 18 are symmetrically arranged on both sides of the discharge pipe 19 to promote the rapid entry of liquid into the discharge pipe 19.

[0029] The side of filter screen 16 is provided with a compression mechanism, which includes a compression box 21, filter screen 23 and pressure plate 26;

[0030] Furthermore, the housing 1 has an outlet 20 located above the bottom of the filter screen 16, and the compression box 21 has an inlet 22 that connects to the outlet 20. The top of the compression box 21 is equipped with a cylinder 24 whose stroke end is connected to the pressure plate 26 via a lifting frame 25. The bottom of the filter screen 23 is provided with a return pipe 28 that communicates with the housing 1. The side of the compression box 21 away from the inlet 22 has a discharge port 29 located above the filter screen 23.

[0031] Specifically, the solid material mixed with liquid is discharged from the outlet 20 along the filter screen 16 and enters the inlet 22, and then falls onto the filter screen 23. By controlling the length of the piston rod of the cylinder 24, the pressure plate 26 is moved up and down, thereby repeatedly compressing the solid material on the filter screen 23, causing the liquid to flow downward through the filter screen 23 and back to the bottom of the box 1 through the return pipe 28, and then discharged through the discharge pipe 19.

[0032] Furthermore, the bottom of the compression chamber 21 is provided with a flow guide block 27 to promote the flow of liquid to the return pipe 28. The discharge port 29 is connected to a magnetic cover plate 30 by a hinge. The outer wall of the compression chamber 21 is provided with a magnetic block 32 with the opposite magnetism to that of the magnetic cover plate 30. By rotating the magnetic cover plate 30 upward, the magnetic cover plate 30 and the magnetic block 32 are attracted and fixed, thereby locking the position of the magnetic cover plate 30 so as to remove the solid material on the filter screen 23.

[0033] Specifically, by setting up a vibrating screening mechanism, a discharge pipe 19, an exhaust pipe 34, and a compression mechanism, the exhaust pipe 34 is used to discharge the gas produced during fermentation. In conjunction with the vibrating screening mechanism, the fermentation products are separated into solid and liquid components. The liquid is discharged from the discharge pipe 19, while the solid is discharged to the compression mechanism for secondary processing, further discharging the mixed liquid. Compared with existing technologies, this method can not only directly discharge the fermentation products but also perform solid-liquid-gas separation, saving time and labor, greatly improving work efficiency, and enhancing practicality.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A continuous straw fermentation device for preparing biofuel, comprising a box (1) with a box cover (2) connected to the top end, characterized in that, The fermentation cylinder (9) is detachably connected inside the box (1). The box cover (2) is connected to the feeding pipe (3) and the quantitative feeder (5). The box cover (2) is connected to the exhaust pipe (34). The fermentation cylinder (9) is equipped with a rotating shaft (7). The rotating shaft (7) is connected to the servo motor (6) installed on the box cover (2). The rotating shaft (7) is evenly equipped with stirring shafts (8). The fermentation cylinder (9) is equipped with a dynamic control mechanism. The dynamic control mechanism includes a temperature control module and a pH control module. The bottom of the fermentation cylinder (9) is equipped with a discharge plate (12) connected to the fermentation cylinder (9) through a drive shaft (11). The fermentation cylinder (9) is equipped with a vibrating screening mechanism below it. The bottom of the box (1) is connected to the discharge pipe (19). The vibrating screening mechanism includes a filter screen one (16). The side of the filter screen one (16) is equipped with a compression mechanism. The compression mechanism includes a compression box (21), a filter screen two (23), and a pressure plate (26).

2. The straw continuous fermentation device for preparing biofuel according to claim 1, characterized in that, Blades (4) are evenly installed on the inner wall of the feeding pipe (3).

3. The straw continuous fermentation device for preparing biofuel according to claim 1, characterized in that, The temperature control module includes a temperature sensor (14) installed on the fermentation tank (9), the stirring shaft (8) includes a heat-conducting shell (81) with an electric heating rod (82) inside, the electric heating rod (82) is connected to the heat-conducting shell (81) through a limiting sleeve (83), the outer wall of the fermentation tank (9) is covered with a heat exchange jacket (10), and the pH adjustment module includes a pH sensor (13) installed on the fermentation tank (9).

4. A continuous straw fermentation device for preparing biofuel according to claim 1, characterized in that, The fermentation cylinder (9) is inverted cone shape, and a bearing ring (31) is fixed on the inner wall of the box (1). A support ring (33) is fixed on the top of the fermentation cylinder (9) and suspended on the bearing ring (31).

5. A continuous straw fermentation device for preparing biofuel according to claim 1, characterized in that, The vibrating screening mechanism includes a vibrating motor (17), the filter screen (16) is inclined towards the side close to the compression mechanism, a frame (15) is fixed on the outside of the filter screen (16), the vibrating motor (17) is connected to the frame (15), and guide blocks (18) are provided on both sides of the bottom of the box (1).

6. A continuous straw fermentation device for preparing biofuel according to claim 1, characterized in that, The housing (1) has an outlet (20) located above the bottom of the first filter screen (16). The compression box (21) has an inlet (22) connected to the outlet (20). The top of the compression box (21) is equipped with a cylinder (24) whose stroke end is connected to the pressure plate (26) via a lifting frame (25). The bottom of the second filter screen (23) is provided with a return pipe (28) connected to the housing (1). The side of the compression box (21) away from the inlet (22) has a discharge port (29) located above the second filter screen (23).

7. A continuous straw fermentation device for preparing biofuel according to claim 6, characterized in that, The bottom of the compression box (21) is provided with a flow guide block (27), and a magnetic cover plate (30) is movably connected inside the discharge port (29). The outer wall of the compression box (21) is provided with a magnetic block (32) with the opposite magnetism to that of the magnetic cover plate (30).

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