A biogas fermentation anti-crusting stirring device

Abstract

The utility model discloses a biogas fermentation anti-crusting stirring device, which is applied to the biogas fermentation technology field. When the cross stirring rod rotates and stirs, the utility model can also rotate itself, so that when the cross stirring rod pushes away the crusted material, the grooves on the surface will rotate downward to press the crusted material into water, so that the crusted material can contact the water and then soften the material, which not only effectively avoids the large-area crusting phenomenon, but also can re-immerse the crusted material in the liquid for re-fermentation and use, thereby improving the fermentation effect; by turning on the second motor to drive the threaded rod to rotate and engage with the threaded sleeve, the sliding cylinder slides up and down on the surface of the rotating cylinder under the connection of the fixed protrusion, and the height of the cross stirring rod is adjusted, so that the material inside the liquid can be stirred or the crusted material on the liquid surface can be pushed away as needed, and it can also be reasonably adjusted according to the liquid level height, thereby improving practicality.

Description

Technical Field

[0001] The utility model belongs to the technical field of biogas fermentation, and particularly relates to a biogas fermentation anti-crusting stirring device. Background Art

[0002] Biogas is mainly produced by fermenting various organic matter such as human and animal feces, straw, sewage, etc. under anaerobic conditions in a closed biogas tank, and decomposing and transforming them through biogas fermentation microorganisms. Since there are liquids, impurities, solids and various fermentation microorganisms in the biogas tank, in order to evenly mix the fermentation bacteria in the biogas tank with liquids, impurities, solids and other organic matter, an agitator is usually installed in the tank body.

[0003] At present, the Chinese utility model with the publication number of CN210506324U discloses a biogas fermentation tank stirring device, characterized in that it includes a fixed base arranged above the liquid level of the biogas fermentation tank, 6 steel cable rings are arranged on the upper end face of the fixed base, each steel cable ring is provided with a steel cable connected to the corresponding wheel axle respectively, the wheel axle is arranged horizontally in a circular shape on the upper end face of the outer wall of the biogas fermentation tank, a through hole is arranged in the middle of the fixed base, a stirring connecting rod passes through the through hole, a rotating motor is connected to the upper end face of the stirring connecting rod, the rotating motor drives the stirring connecting rod to rotate, and the lower part of the side end face of the stirring connecting rod is arranged to connect with the stirring blade. There are two stirring devices for biogas fermentation tanks at present, one is manual stirring, which is suitable for small fermentation tanks. The manual stirring method used to destroy the crust on the fermentation liquid is suitable for small processing workshops, while in large processing plants, the number of fermentation tanks is large, and the fermentation tanks are very large. It is obviously impossible to destroy the surface crust in this way.

[0004] Since the fermentation materials on the liquid surface in the existing biogas silo are prone to crusting and hardening after the internal moisture evaporates, which in turn affects the biogas fermentation effect, we have observed in actual use that the stirring device installed in the existing biogas silo can only simply stir the objects inside the biogas silo, and push the crusted materials away through the stirring rod to expose the liquid below, so that the biogas can be released. It is impossible to soak the crusted and hardened materials on the top into the liquid to make them absorb water and soften, and then ferment and use them again. Therefore, not only can the crusted materials be unusable, resulting in a waste of raw materials, but the crusted materials are also pushed aside by the stirring rod for a long time, and are easy to stick to each other to form a thick block layer, which is extremely difficult to clean. It will also prevent the biogas below from being released in time, and its practicality is low. Utility Model Content

[0005] The utility model aims to provide a biogas fermentation anti-crusting stirring device, which has the advantages of being convenient for re-immersing crusted and hardened fermentation materials into liquid for softening and fermentation and being convenient for adjusting the height of the stirring rod according to the liquid level inside the biogas bin.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a biogas fermentation anti-crust stirring device, comprising a biogas fermentation bin and a stirring mechanism installed inside the biogas fermentation bin, the stirring mechanism comprising a first motor installed on the top of the inner cavity of the biogas fermentation bin, the output end of the first motor is fixedly connected with a first bevel gear, the top of the inner cavity of the biogas fermentation bin is fixedly connected with a fixed rod, the surface of the fixed rod is rotatably sleeved with a rotating cylinder, the top of the rotating cylinder is fixedly installed with a second bevel gear meshing with the first bevel gear, the surface of the rotating cylinder is slidably sleeved with a sliding cylinder, both sides of the bottom of the sliding cylinder are rotatably connected with a cross stirring rod, one end of the cross stirring rod close to the inside of the sliding cylinder is fixedly connected with a fourth bevel gear, the bottom of the fixed rod is fixedly connected with a third bevel gear meshing with the fourth bevel gear, the top of the surface of the sliding cylinder is fixedly sleeved with a fixed disk, one side of the top of the inner cavity of the biogas fermentation bin is fixedly installed with a second motor, the output end of the second motor is fixedly connected with a threaded rod, the surface of the threaded rod is threadedly sleeved with a threaded sleeve, and one end of the surface of the threaded sleeve is welded with a fixed protrusion slidably connected with the fixed disk.

[0007] By adopting the above technical scheme, when the cross stirring rod rotates and stirs, it can also rotate itself, so that when the cross stirring rod pushes away the crusted material, the grooves on the surface will rotate downward to press the crusted material into the water, so that the crusted material can be in contact with the water, thereby softening the material, which not only effectively avoids the large-area crusting phenomenon, but also allows the crusted material to be re-immersed in the liquid and re-fermented and used, thereby improving the fermentation effect; by turning on the second motor to drive the threaded rod to rotate and engage with the threaded sleeve, the sliding cylinder can slide up and down on the surface of the rotating cylinder under the connection of the fixed protrusion, and the height of the cross stirring rod can be adjusted, so that the material inside the liquid can be stirred or the crusted material on the liquid surface can be pushed away as needed, and it can also be reasonably adjusted according to the liquid level to improve practicality.

[0008] The utility model is further configured as follows: the surface of the cross stirring rod is coated with an anti-corrosion coating.

[0009] The above technical solution is adopted to prevent the liquid inside the biogas fermentation bin from corroding the surface of the cross stirring rod, thereby increasing its service life.

[0010] The utility model is further configured as follows: a limiting sliding groove which is slidably connected with the rotating cylinder is provided inside the sliding cylinder.

[0011] By adopting the above technical solution, the movement of the sliding cylinder is limited twice, which not only makes the sliding cylinder only slide on the surface of the rotating cylinder but cannot rotate, but also improves the stability of the sliding cylinder sliding up and down.

[0012] The utility model is further configured as follows: a ball bearing which is rotatably connected to the fixed protrusion is provided inside the fixed disk.

[0013] By adopting the above technical solution, the sliding friction between the fixed protrusion and the fixed disk is reduced.

[0014] The utility model is further configured as follows: a liquid level meter used in conjunction with the second motor is fixedly installed at the bottom of the sliding cylinder.

[0015] The above technical solution is adopted to facilitate the detection of the liquid level inside the biogas fermentation bin, thereby automatically controlling and adjusting the height of the cross stirring rod.

[0016] The utility model is further configured as follows: a sealing ring which is slidably connected with the sliding cylinder is glued on the surface of the cross stirring rod close to one end of the sliding cylinder.

[0017] The above technical solution is adopted to improve the sealing performance and prevent liquid from penetrating into the interior.

[0018] In summary, the utility model has the following beneficial effects:

[0019] 1. When the cross stirring rod rotates and stirs, it can also rotate itself. When the cross stirring rod pushes away the crusted material, the grooves on the surface will rotate downward to press the crusted material into the water, so that the crusted material can be exposed to water and softened. This not only effectively avoids large-area crusting, but also allows the crusted material to be re-immersed in the liquid for re-fermentation and use, thereby improving the fermentation effect.

[0020] 2. By turning on the second motor to drive the threaded rod to rotate and engage with the threaded sleeve, the sliding cylinder can slide up and down on the surface of the rotating cylinder under the connection of the fixed protrusion, and the height of the cross stirring rod can be adjusted, so that the internal material of the liquid can be stirred or the crusted material on the liquid surface can be pushed away as needed. At the same time, it can also be reasonably adjusted according to the liquid level to improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0023] Figure 3 This utility model Figure 2 A magnified view of point A in the figure;

[0024] Figure 4 This utility model Figure 2 Enlarged view of point B in .

[0025] Figure numerals: 1. biogas fermentation chamber; 2. fixed rod; 3. first motor; 4. first bevel gear; 5. rotating cylinder; 6. second bevel gear; 7. sliding cylinder; 8. cross stirring rod; 9. third bevel gear; 10. fourth bevel gear; 11. second motor; 12. threaded rod; 13. limiting slide groove; 14. fixed plate; 15. threaded sleeve; 16. fixed protrusion; 17. ball; 18. liquid level gauge; 19. sealing ring. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Embodiment 1:

[0028] refer to Figure 1 , Figure 2 , Figure 4 A biogas fermentation anti-crusting stirring device comprises a biogas fermentation bin 1 and a stirring mechanism installed inside the biogas fermentation bin 1, wherein the stirring mechanism comprises a first motor 3 installed on the top of the inner cavity of the biogas fermentation bin 1, wherein the output end of the first motor 3 is fixedly connected to a first bevel gear 4, a fixed rod 2 is fixedly connected to the top of the inner cavity of the biogas fermentation bin 1, a rotating cylinder 5 is rotatably sleeved on the surface of the fixed rod 2, a second bevel gear 6 meshing with the first bevel gear 4 is fixedly installed on the top of the rotating cylinder 5, a sliding cylinder 7 is slidably sleeved on the surface of the rotating cylinder 5, and a cross stirring rod 8 is rotatably connected to both sides of the bottom of the sliding cylinder 7, One end of the cross stirring rod 8 close to the inside of the sliding cylinder 7 is fixedly connected to the fourth bevel gear 10, and the bottom of the fixed rod 2 is fixedly connected to the third bevel gear 9 meshing with the fourth bevel gear 10. When the cross stirring rod 8 rotates and stirs, it can also rotate itself. When the cross stirring rod 8 pushes the crusted material away, the grooves on the surface will rotate downward to press the crusted material into the water, so that the crusted material can be exposed to water, thereby softening the material. This not only effectively avoids large-area crusting, but also allows the crusted material to be re-immersed in liquid and re-fermented, thereby improving the fermentation effect.

[0029] refer to Figure 2 The surface of the cross stirring rod 8 is coated with an anti-corrosion coating to prevent the liquid inside the biogas fermentation bin 1 from corroding the surface of the cross stirring rod 8 and improve its service life.

[0030] refer to Figure 2 , Figure 3 A limiting slide groove 13 is provided inside the sliding cylinder 7 and is slidably connected to the rotating cylinder 5, which performs secondary limiting on the movement of the sliding cylinder 7, so that the sliding cylinder 7 can only slide on the surface of the rotating cylinder 5 but cannot rotate, and at the same time improves the stability of the sliding cylinder 7 sliding up and down.

[0031] refer to Figure 4A sealing ring 19 is glued on the surface of the cross stirring rod 8 near one end of the sliding cylinder 7 and is slidably connected with the sliding cylinder 7 to improve the sealing performance and prevent liquid from penetrating into the interior.

[0032] Brief description of the use process: by turning on the first motor 3 to drive the first bevel gear 4 to mesh with the second bevel gear 6, the second bevel gear 6 drives the rotating cylinder 5 and the sliding cylinder 7 to rotate on the surface of the fixed rod 2, so that the cross stirring rod 8 can rotate at the bottom of the sliding cylinder 7 to stir the fermentation material encrusted inside the biogas fermentation bin 1, and at the same time, the fourth bevel gear 10 at one end of the cross stirring rod 8 is meshed with the third bevel gear 9, so that when the cross stirring rod 8 rotates and stirs, it can also rotate itself, and at the same time, the cross groove on the surface of the cross stirring rod 8, when the encrusted material is pushed away, the cross groove will rotate downward to press the encrusted material into the water, so that the encrusted material can be exposed to water and then softened.

[0033] Embodiment 2:

[0034] refer to Figure 1 , Figure 2 , Figure 3 A biogas fermentation anti-crusting stirring device, the top of the sliding cylinder 7 surface is fixedly sleeved with a fixed disk 14, a second motor 11 is fixedly installed on one side of the top of the inner cavity of the biogas fermentation bin 1, and a threaded rod 12 is fixedly connected to the output end of the second motor 11, and a threaded sleeve 15 is threadedly sleeved on the surface of the threaded rod 12, and a fixed protrusion 16 slidably connected to the fixed disk 14 is welded on one end of the surface of the threaded sleeve 15; the second motor 11 is turned on to drive the threaded rod 12 to rotate and threadably engage with the threaded sleeve 15, so that the sliding cylinder 7 slides up and down on the surface of the rotating cylinder 5 under the connection of the fixed protrusion 16, and the height of the cross stirring rod 8 is adjusted, so that the internal material of the liquid can be stirred or the crust material on the liquid surface can be pushed away as needed, and it can also be reasonably adjusted according to the liquid level to improve practicality.

[0035] refer to Figure 3 The fixed plate 14 is internally rotatably connected with a ball 17 that is slidably connected to the fixed protrusion 16 to reduce the sliding friction between the fixed protrusion 16 and the fixed plate 14.

[0036] refer to Figure 2 , Figure 4 A liquid level meter 18 used in conjunction with the second motor 11 is fixedly installed at the bottom of the sliding cylinder 7 to facilitate the detection of the liquid level inside the biogas fermentation bin 1, thereby automatically controlling and adjusting the height of the cross stirring rod 8.

[0037] Brief description of the use process: by turning on the second motor 11, the threaded rod 12 is driven to rotate and engage with the threaded sleeve 15, so that the sliding cylinder 7 can be driven to slide up and down on the surface of the rotating cylinder 5 through the threaded sleeve 15 under the connection of the fixed protrusion 16, and at the same time, the sliding cylinder 7 can only slide on the surface of the rotating cylinder 5 and cannot rotate through the limit of the sliding cylinder 7 by the rotating cylinder 5, and then when the rotating cylinder 5 drives the sliding cylinder 7 to rotate, the surface of the fixed disk 14 will slide on one side of the fixed protrusion 16, so that it will not drive the threaded rod 12 and the threaded sleeve 15 to rotate with the sliding cylinder 7, and at the same time, the threaded sleeve 15 can also drive the sliding cylinder 7 to move up and down to adjust the height of the cross stirring rod 8 through the fixed protrusion 16. This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contribution as needed, but as long as it is within the scope of the claims of the utility model, it will be protected by the patent law.

Claims

1. A biogas fermentation anti-crusting stirring device, comprising a biogas fermentation bin (1) and a stirring mechanism installed inside the biogas fermentation bin (1), characterized in that: The stirring mechanism comprises a first motor (3) mounted on the top of the inner cavity of the biogas fermentation bin (1); the output end of the first motor (3) is fixedly connected to a first bevel gear (4); the top of the inner cavity of the biogas fermentation bin (1) is fixedly connected to a fixed rod (2); a rotating cylinder (5) is rotatably sleeved on the surface of the fixed rod (2); a second bevel gear (6) meshing with the first bevel gear (4) is fixedly mounted on the top of the rotating cylinder (5); a sliding cylinder (7) is slidably sleeved on the surface of the rotating cylinder (5); both sides of the bottom of the sliding cylinder (7) are rotatably connected to cross stirring rods (8); the cross stirring rods (8) are close to the sliding cylinder. A fourth bevel gear (10) is fixedly connected to one end of the moving cylinder (7), a third bevel gear (9) meshing with the fourth bevel gear (10) is fixedly connected to the bottom of the fixed rod (2), a fixed disk (14) is fixedly sleeved on the top of the surface of the sliding cylinder (7), a second motor (11) is fixedly installed on one side of the top of the inner cavity of the biogas fermentation bin (1), a threaded rod (12) is fixedly connected to the output end of the second motor (11), a threaded sleeve (15) is threadedly sleeved on the surface of the threaded rod (12), and a fixed protrusion (16) slidably connected to the fixed disk (14) is welded to one end of the surface of the threaded sleeve (15).

2. The anti-crusting stirring device for biogas fermentation according to claim 1, characterized in that: The surface of the cross stirring rod (8) is coated with an anti-corrosion coating.

3. The anti-crusting stirring device for biogas fermentation according to claim 1, characterized in that: The interior of the sliding cylinder (7) is provided with a limiting sliding groove (13) which is slidably connected to the rotating cylinder (5).

4. The anti-crusting stirring device for biogas fermentation according to claim 1, characterized in that: A ball (17) is rotatably connected inside the fixed disk (14) and is slidably connected to the fixed protrusion (16).

5. The anti-crusting stirring device for biogas fermentation according to claim 1, characterized in that: A liquid level meter (18) used in conjunction with the second motor (11) is fixedly mounted on the bottom of the sliding cylinder (7).

6. The anti-crusting stirring device for biogas fermentation according to claim 1, characterized in that: A sealing ring (19) is glued to the surface of one end of the cross stirring rod (8) close to the sliding cylinder (7) and is slidably connected to the sliding cylinder (7).

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