Special stirrer for biogas fermentation

Abstract

The utility model relates to the technical field of biogas fermentation, in particular to a special stirrer for biogas fermentation, which is characterized in that one side of a frame body is fixedly connected with a side frame, the inner side of the side frame is rotatably connected with a stirring rod, and the top end of a bearing rod is connected with the top end of the stirring rod through a belt in a winding manner; one side of the top of the frame body is fixedly connected with a driving motor through a bolt, the top end of the bearing rod penetrates through the top of the frame body and is in transmission connection with an output shaft of the driving motor, and one side of the frame body is fixedly connected with a pump body through a bolt. The problem that a stirring dead angle is easily formed by a traditional single stirring structure is avoided, and the material mixing uniformity is improved; meanwhile, linkage control of the two stirring parts is achieved in a belt transmission mode, the structural design of a power system is simplified, energy consumption is reduced, and operation stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of biogas fermentation technology, and in particular to a special stirrer for biogas fermentation. Background Technology

[0002] Biogas fermentation is a technology that utilizes organic waste to produce combustible gas through microbial action under anaerobic conditions. It is widely used in agriculture, animal husbandry, and urban wastewater treatment as an important means of resource utilization and energy recovery. Biogas fermentation equipment plays a crucial role in this process; as one of the core components, its stirring effect has a decisive impact on fermentation efficiency, gas production rate, and the stability of the entire system.

[0003] Especially in the core mixing stage, existing mixing devices have gradually revealed a series of obvious limitations and technical problems when handling fermentation materials with high viscosity and high solids content. For example, utility model patent CN220907474U discloses a mixing mechanism based on biogas fermentation, including a fermentation tank, a drive mechanism, and a mixing mechanism. The mixing mechanism expands the mixing range and improves the mixing efficiency through the design of movable blocks, pneumatic cylinders, connecting rods, and scrapers. Although this structure improves the mixing effect to a certain extent and can clean the inner wall of the tank, it still has obvious shortcomings in practical applications.

[0004] Specifically, existing mixing equipment faces prominent problems such as uneven mixing and low mixing efficiency during the mixing process. Because biogas fermentation materials typically have high viscosity and poor flowability, they are prone to localized accumulation or clumping during mixing, resulting in insufficient contact between the material and microorganisms, thus affecting fermentation efficiency. Furthermore, existing mixers have a limited mixing range, failing to effectively cover the bottom and edges of the fermentation tank, creating mixing blind spots and further exacerbating the problem of uneven material distribution. Therefore, to address the many shortcomings of existing technologies, we urgently need an innovative mixer specifically designed for biogas fermentation to solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a special mixer for biogas fermentation, which solves the problems of uneven mixing and low mixing efficiency faced by existing mixing equipment during the mixing process.

[0006] To achieve the above objectives, this utility model provides a special stirrer for biogas fermentation, including a frame, and a support rod rotatably connected to the inner side of the frame, with an agitator plate fixedly connected to the lower part of the support rod;

[0007] A side frame is fixedly connected to one side of the frame, and a stirring rod is rotatably connected to the inside of the side frame. The top of the support rod and the top of the stirring rod are connected by a belt. A drive motor is fixedly connected to the top of the frame by bolts, and the top of the support rod passes through the top of the frame and is connected to the output shaft of the drive motor. A pump body is fixedly connected to one side of the frame by bolts, and a discharge frame is fixedly connected to the top of the frame. The inlet of the pump body is connected to the lower part of the side frame, and the outlet of the pump body is connected to one side of the discharge frame.

[0008] The frame has a door hinged to one side of the outer frame, and a top cover is hinged to the top of the side frame.

[0009] The frame has two slidably connected bearing plates on the upper inner side, and several combing rods are fixedly connected to the bottom of the two bearing plates. Cylinders are fixedly connected to both sides of the outer wall of the frame, and the output shafts of the two cylinders pass through the side wall of the frame and are fixedly connected to one side of the two bearing plates respectively.

[0010] Each of the two support plates has a slider fixedly connected to one side, and the slider is slidably connected to the inner wall of the frame through a groove.

[0011] The bottom end of the support rod is rotatably connected to the bottom inner side of the frame via a rotating shaft, and the top end of the support rod passes through the top of the frame via a bearing sleeve. The bottom end of the stirring rod is rotatably connected to the bottom inner side of the side frame via a rotating shaft, and the top end of the stirring rod passes through the top of the side frame via a bearing sleeve. Both the top end of the support rod and the top end of the stirring rod are fitted with pulleys, and the two pulleys are connected by a belt winding around each other.

[0012] The pump body has an inlet connected to the lower part of the side frame via a feed pipe, and an outlet connected to one side of the discharge frame via a discharge pipe.

[0013] This utility model discloses a special mixer for biogas fermentation. By setting up a dual-mixing system, it achieves coordinated operation of the main and auxiliary mixing zones, effectively expanding the mixing range and avoiding the problem of dead zones easily formed in traditional single-mixing structures, thus improving the uniformity of material mixing. Simultaneously, the belt drive enables the linkage control of the two mixing components, simplifying the power system's structural design, reducing energy consumption, and improving operational stability. Furthermore, the introduction of the pump body and discharge frame allows for material circulation during the mixing process, enabling the evenly mixed material in the side frame to be re-input into the main frame, further enhancing the integration of materials. This is particularly suitable for biogas fermentation raw materials with high viscosity and high solids content, helping to improve the mixing difficulties caused by poor material flowability, reducing agglomeration and accumulation, and increasing the contact efficiency between microorganisms and raw materials, thereby improving fermentation efficiency and gas production rate. More importantly, this structural design facilitates operation and maintenance, reduces the frequency of manual intervention, improves the automation level and adaptability of the equipment, meets the actual needs of modern large-scale biogas projects for efficient and stable operation, and has good prospects for widespread application. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the external structure of an embodiment of the present utility model.

[0016] Figure 2 This is a top view of an embodiment of the present invention.

[0017] Figure 3 This is a side view structural diagram of an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the inner structure of the frame in an embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of the support rod and its structure according to an embodiment of the present utility model.

[0020] 1. Frame; 2. Door; 3. Support rod; 4. Cylinder; 5. Side frame; 6. Top cover; 7. Stirring rod; 8. Pulley; 9. Belt; 10. Drive motor; 11. Discharge frame; 12. Support plate; 13. Slider; 14. Slide groove; 15. Combing rod; 16. Stirring plate; 17. Pump body; 18. Discharge pipe; 19. Feed pipe. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figure 1-5 A special mixer for biogas fermentation includes a frame 1, a support rod 3 rotatably connected to the inner side of the frame 1, and an agitator 16 fixedly connected to the lower part of the support rod 3; a side frame 5 fixedly connected to one side of the frame 1, and an agitator 7 rotatably connected to the inner side of the side frame 5, with the top end of the support rod 3 and the top end of the agitator 7 connected by a belt 9; a drive motor 10 fixedly connected to one side of the top of the frame 1 by bolts, with the top end of the support rod 3 penetrating the top of the frame 1 and connected to the output shaft of the drive motor 10; a pump body 17 fixedly connected to one side of the frame 1 by bolts, and a discharge frame 11 fixedly connected to one side of the top of the frame 1; the inlet of the pump body 17 is connected to the lower part of the side frame 5, and the outlet of the pump body 17 is connected to one side of the discharge frame 11.

[0023] First, the raw materials for biogas fermentation are fed into the frame 1 through the top opening. Then, the drive motor 10, fixed to one side of the top of the frame 1, is started. The output shaft of the drive motor 10 drives the support rod 3 to rotate, and the stirring plate 16 fixedly connected to the lower part of the support rod 3 rotates accordingly, initially stirring the materials in the frame 1. At the same time, the top of the support rod 3 passes through the top of the frame 1 and is connected to the drive motor 10. Its top also extends above the side frame 5 and is connected to the stirring rod 7 located inside the side frame 5 via a belt 9. Therefore, when the support rod 3 rotates, the stirring rod 7 rotates synchronously through the transmission action of the belt 9, thereby achieving initial stirring of the materials in the frame 1. Different types or pre-treated fermentation raw materials pre-added in side frame 5 are independently stirred and mixed; after the initial stirring and premixing are completed, the pump 17 installed on one side of frame 1 is started. The inlet end of the pump 17 is connected to the lower part of side frame 5, and the outlet end is connected to one side of discharge frame 11. The stirred raw materials in side frame 5 are pumped to discharge frame 11 through pump 17 and finally transported into the interior of frame 1 to achieve full mixing between different materials; throughout the stirring process, stirring plate 16 and stirring rod 7 work together to ensure uniform dispersion of materials in their respective areas, and the overall mixing effect is further improved by the circulation conveying function of pump 17.

[0024] Furthermore, a door 2 is hinged to the outer side of the frame 1, and a top cover 6 is hinged to the top of the side frame 5. When cleaning, maintenance, or inspection of the interior of the frame 1 or side frame 5 is required, the internal components can be easily accessed by opening the hinged door 2 and top cover 6. This not only simplifies the equipment maintenance process and reduces downtime, but also improves the safety and convenience of operation.

[0025] Furthermore, the upper inner sides of the frame 1 are slidably connected to the support plates 12, and the bottom of each support plate 12 is fixedly connected to several combing rods 15. The outer walls of the frame 1 are fixedly connected to the cylinders 4, and the output shafts of the two cylinders 4 pass through the side walls of the frame 1 and are fixedly connected to one side of each of the two support plates 12. When the cylinders 4 drive the support plates 12 to move along the slide 14, the combing rods 15 fixed at the bottom of the support plates 12 also move accordingly. This can effectively stratify and loosen the fermentation material, prevent the material from clumping, thereby improving the stirring efficiency and uniformity, ensuring that the material and microorganisms are in full contact, and improving the fermentation effect.

[0026] Furthermore, sliders 13 are fixedly connected to one side of each of the two support plates 12, and the sliders 13 are slidably connected to the inner wall of the frame 1 through the sliding groove 14, so that the support rod 3 and the stirring rod 7 can operate synchronously and efficiently, effectively expanding the stirring range, avoiding the stirring dead zone problem that may exist in the traditional single stirring structure, enhancing the uniformity of material mixing, and further improving stirring efficiency and quality.

[0027] Furthermore, the bottom end of the support rod 3 is rotatably connected to the inner bottom of the frame 1 via a rotating shaft, and the top end of the support rod 3 passes through the top of the frame 1 via a bearing sleeve. The bottom end of the stirring rod 7 is rotatably connected to the inner bottom of the side frame 5 via a rotating shaft, and the top end of the stirring rod 7 passes through the top of the side frame 5 via a bearing sleeve. Both the top ends of the support rod 3 and the stirring rod 7 are fitted with pulleys 8, and the two pulleys 8 are connected by a belt 9. The pump body 17 can draw the fermentation material in the side frame 5 through the feed pipe 19 and transport it to the discharge frame 11 via the discharge pipe 18, ultimately returning it to the frame 1. This circulation system design ensures that different types of materials are fully mixed, solving the problem of high-viscosity materials being difficult to mix evenly, while also promoting the overall fluidity of the materials, which helps to improve fermentation efficiency.

[0028] Furthermore, the inlet of the pump body 17 is connected to the lower part of the side frame 5 via the feed pipe 19, and the outlet of the pump body 17 is connected to one side of the discharge frame 11 via the discharge pipe 18, ensuring the stability of the combing rod 15 during loosening operations. This design not only increases the reliability of equipment operation but also reduces unnecessary vibration and noise due to the tight fit between sliding parts, extending the service life of the equipment and reducing maintenance costs. At the same time, this also means that the equipment can maintain high working efficiency and stability during long-term operation.

[0029] In summary:

[0030] First, the raw materials for biogas fermentation are put into the frame 1 through the top opening. Then, the drive motor 10, which is fixed to one side of the top of the frame 1, is started. The output shaft of the drive motor 10 drives the support rod 3, which passes through the top of the frame 1 and is connected to it, to rotate. The stirring plate 16, which is fixedly connected to the lower part of the support rod 3, rotates accordingly, thus initially stirring the materials in the frame 1. At the same time, the top of the support rod 3 extends to the top of the side frame 5 and is connected to the stirring rod 7, which is located inside the side frame 5, by a belt 9. Therefore, when the support rod 3 rotates, the stirring rod 7 is driven to rotate synchronously through the belt 9, thereby achieving the stirring of the materials pre-added in the side frame 5. Fermentation raw materials of the same type or pre-treated are stirred and mixed independently to ensure that the materials in the main and auxiliary areas are uniform before being blended. After the initial stirring and premixing are completed, the pump 17 installed on one side of the frame 1 is started. The inlet end of the pump 17 is connected to the lower part of the side frame 5 through the feed pipe 19, and the outlet end is connected to one side of the discharge frame 11 through the discharge pipe 18. The pump 17 pumps the stirred raw materials in the side frame 5 to the discharge frame 11 and finally delivers them into the interior of the frame 1, achieving thorough mixing between different materials. Throughout the stirring process, the stirring plate 16 and the stirring rod 7 work together to ensure that the materials are evenly dispersed in their respective areas. Meanwhile, the overall mixing effect is further improved by the circulating conveying function of the pump body 17. In addition, during the mixing process, in order to prevent material agglomeration and improve mixing efficiency, two support plates 12 are slidably connected to the upper sides of the inner side of the frame 1, and several combing rods 15 are fixedly connected to the bottom of each support plate 12. One side of the support plate 12 is slidably engaged with the slide groove 14 on the inner wall of the frame 1 through the slider 13, and the outer side is driven by the cylinder 4. The output shaft of the cylinder 4 passes through the side wall of the frame 1 and is connected to the support plate 12. When the cylinder 4 is activated, it pushes the support plate 12 to move along the slide groove 14, causing the combing rods 15 to slide up and down in the material layer and loosen the material in layers. This effectively prevents clumping and enhances the mixing effect. Meanwhile, for ease of maintenance and repair, a door 2 is hinged to one side of the frame 1, and a hinged top cover 6 is also provided on the top of the side frame 5, allowing for easy opening to clean or inspect the inside of the equipment. The bottom of the support rod 3 is rotatably connected to the bottom of the frame 1 via a rotating shaft, and its top end passes through the top of the frame 1 via a bearing sleeve. Similarly, the stirring rod 7 is connected to the bottom of the side frame 5 via a rotating shaft, and its top end also passes through the top of the side frame 5 via a bearing sleeve. Both the support rod 3 and the stirring rod 7 have pulleys 8 at their top ends, connected by a belt 9, ensuring synchronous operation and improving mixing stability and coverage.The drive motor 10, which powers the bearing rod 3 and the agitator plate 16, enables efficient stirring of the materials inside the main tank, quickly breaking up material buildup and improving initial mixing efficiency. Secondly, the belt drive 9 drives the agitator rod 7 synchronously within the side frame 5, allowing different types or pre-treated materials to be independently stirred in the auxiliary tank before entering the main tank for mixing. This avoids the problems of large differences in material composition and uneven mixing in traditional single-tank mixing, improving overall mixing uniformity. Thirdly, the circulation system consisting of the pump body 17, inlet pipe 19, and outlet pipe 18 enables the return flow of materials from the side frame 5 to the frame 1, strengthening the mutual penetration and fusion of materials. This is particularly suitable for biogas fermentation raw materials with high viscosity and high solids content, significantly improving mixing efficiency and fermentation effect. Furthermore... The design of cylinder 4 driving the bearing plate 12 and combing rod 15, combined with the sliding guide structure of slider 13 and groove 14, can perform layered loosening treatment of materials during the mixing process, effectively preventing agglomeration, improving material flowability, allowing microorganisms to have more full contact with raw materials, and improving fermentation efficiency. Finally, the hinged structure of door 2 and top cover 6 provides a convenient passage for daily maintenance, cleaning and troubleshooting, reducing downtime and improving operational safety and convenience. In summary, this utility model, through the synergistic effect of multiple components, not only solves the problems of uneven mixing, low mixing efficiency and dead corners in the prior art, but also enhances the adaptability, stability and automation level of the equipment, meeting the actual needs of modern large-scale biogas projects for efficient and continuous operation, and has good application prospects and promotion value.

[0031] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A special mixer for biogas fermentation, comprising a frame, characterized in that, It also includes a bearing rod rotatably connected to the inner side of the frame, and an agitator plate fixedly connected to the lower part of the bearing rod; A side frame is fixedly connected to one side of the frame, and a stirring rod is rotatably connected to the inner side of the side frame. The top of the support rod and the top of the stirring rod are connected by a belt. A drive motor is fixedly connected to the top of the frame by bolts, and the top of the support rod passes through the top of the frame and is connected to the output shaft of the drive motor. A pump body is fixedly connected to one side of the frame by bolts, and a discharge frame is fixedly connected to the top of the frame. The inlet of the pump body is connected to the lower part of the side frame, and the outlet of the pump body is connected to one side of the discharge frame.

2. The biogas fermentation-specific stirrer as described in claim 1, characterized in that, The outer side of the frame is rotatably connected to a door via a hinge, and the top side of the side frame is rotatably connected to a top cover via a hinge.

3. The biogas fermentation-specific stirrer as described in claim 1, characterized in that, The upper inner sides of the frame are slidably connected to the support plates, and the bottom of the two support plates are fixedly connected to several combing rods. The outer sides of the frame are fixedly connected to the cylinders, and the output shafts of the two cylinders pass through the side walls of the frame and are fixedly connected to one side of the two support plates respectively.

4. The biogas fermentation-specific stirrer as described in claim 3, characterized in that, Each of the two support plates is fixedly connected to a slider on one side, and the slider is slidably connected to the inner wall of the frame through a groove.

5. The biogas fermentation-specific stirrer as described in claim 1, characterized in that, The bottom end of the support rod is rotatably connected to the inner bottom of the frame via a rotating shaft, and the top end of the support rod passes through the top of the frame via a bearing sleeve. The bottom end of the stirring rod is rotatably connected to the inner bottom of the side frame via a rotating shaft, and the top end of the stirring rod passes through the top of the side frame via a bearing sleeve. Both the top end of the support rod and the top end of the stirring rod are fitted with pulleys, and the two pulleys are connected by a belt winding around each other.

6. The biogas fermentation-specific stirrer as described in claim 1, characterized in that, The pump body's inlet is connected to the lower part of the side frame via a feed pipe, and the pump body's outlet is connected to one side of the discharge frame via a discharge pipe.

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