Self-cleaning type anaerobic fermentation stirring paddle

By designing a self-cleaning anaerobic fermentation agitator, and utilizing a servo motor-driven adjustment device and a columnar structure, the problem of deposit accumulation on the agitator surface is solved, achieving efficient cleaning and extending service life.

CN224293027UActive Publication Date: 2026-05-29NANJING UNIV OF FINANCE & ECONOMICS

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING UNIV OF FINANCE & ECONOMICS
Filing Date
2025-07-02
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

During anaerobic fermentation, solid particles, grease, and microorganisms can easily adhere to the surface of the stirring paddle, leading to sediment accumulation, affecting the stirring effect, and potentially causing paddle deformation or corrosion.

Method used

A self-cleaning anaerobic fermentation stirring paddle was designed, which adopts a servo motor driven adjustment device and a bristle column structure. The surface of the stirring rack is automatically cleaned by the lifting and lowering of the moving ring and the support plate. The bristle column can be easily replaced by an auxiliary device to ensure the cleaning effect.

Benefits of technology

It achieves efficient cleaning of the impeller surface, avoids the accumulation of deposits, extends the service life of the impeller, and reduces maintenance costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to anaerobic fermentation stirring paddle cleaning technical field, especially in kind, a self -cleaning type anaerobic fermentation stirring paddle. Including support fixed part, auxiliary device, the bottom end surface fixed connection of support fixed part has fixed sleeve, the inner wall rotation of fixed sleeve is connected with stirring rod, the upper end fixed connection of stirring rod has drive motor, the bottom fixed connection of stirring rod has stirring frame, fixed sleeve arc surface is provided with adjusting device, adjusting device includes two fixed frames, link frame, one side of two fixed frames with the surface fixed connection of fixed sleeve, the inner wall rotation of one of fixed frames has drive rod, the position fixed connection of support fixed part surface with drive rod has servo motor, the output of servo motor is fixedly connected with drive rod, the inner wall both ends of another fixed frame are fixedly connected with limiting rod. The utility model provides a self -cleaning type anaerobic fermentation stirring paddle has the advantage that it is convenient to effectively clean stirring frame.
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Description

Technical Field

[0001] This utility model relates to the field of anaerobic fermentation stirring paddle cleaning technology, and in particular to a self-cleaning anaerobic fermentation stirring paddle. Background Technology

[0002] In anaerobic fermentation, the agitator is one of the key pieces of equipment. It is mainly used to promote the mixing of substances in the fermenter, improve reaction efficiency, and ensure the uniform distribution of gaseous, liquid, and solid substances. Anaerobic fermentation requires the substrate, microorganisms, nutrients, and gases to be fully mixed in order to improve the reaction rate and gas production. By rotating continuously, the agitator can effectively bring these substances into contact with each other and ensure the uniform distribution of reactants during the fermentation process. It is commonly used in anaerobic fermentation chemical reactions.

[0003] Existing technologies, such as the utility model patent with publication number CN220450179U, disclose a stirring paddle for anaerobic fermentation to produce biogas. This patent mainly consists of arc-shaped blades, a blade body, and a blade support. The agitator is designed to achieve efficient mixing and long service life during anaerobic fermentation by utilizing the fluid dynamics and material properties of the blades. The combination of the blade body and multiple arc-shaped blades enables the agitator to operate continuously and stably. The centrifugal force generated during the mixing process promotes thorough mixing of materials, improving biogas production efficiency. The blade support design takes into account structural strength and stability to ensure stable operation under various environmental conditions. The use of this agitator can significantly improve the efficiency of anaerobic fermentation to produce biogas while reducing energy consumption and maintenance costs.

[0004] In anaerobic fermentation chemical reactions, the agitator in the reaction vessel is usually in direct contact with the liquid and mixture. The mixture will contain solid particles, oils, microorganisms and other substances. During long-term stirring, these substances will adhere to the surface of the agitator, thus forming deposits. The accumulation of deposits will not only affect the stirring effect, but also lead to problems such as blade deformation or corrosion. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the stirring paddle in the reaction vessel is usually in direct contact with the liquid and mixture, which may contain solid particles, grease, microorganisms, and other substances. During long-term stirring, these substances will adhere to the surface of the stirring paddle, forming deposits. The accumulation of these deposits not only affects the stirring effect but can also lead to paddle deformation or corrosion.

[0006] To solve the above technical problems, this utility model provides a self-cleaning anaerobic fermentation stirring paddle, comprising: a support fixing component and an auxiliary device. A fixing sleeve is fixedly connected to the bottom surface of the support fixing component. A stirring rod is rotatably connected to the inner wall of the fixing sleeve. A drive motor is fixedly connected to the upper end of the stirring rod. A stirring frame is fixedly connected to the bottom end of the stirring rod. An adjustment device is provided on the arc surface of the fixing sleeve. The adjustment device includes two fixing frames and a connecting frame. One side of each of the two fixing frames is fixedly connected to the surface of the fixing sleeve. A drive rod is rotatably connected to the inner wall of one of the fixing frames. A servo motor is fixedly connected to the surface of the support fixing component at a position corresponding to the drive rod. The output end of the motor is fixedly connected to the drive rod. Limiting rods are fixedly connected to both ends of the inner wall of the other fixed frame. A movable ring slides through the arc surface of the fixed sleeve. One side of the inner wall of the movable ring is threaded to the drive rod, and the other side of the inner wall of the movable ring slides through the arc surface of the limiting rod. Fixed frames are fixedly connected to both ends of the movable ring. Fixed rods are fixedly connected to the surface of the fixed frames. A sliding groove is opened on the upper surface of the connecting frame. The inner wall of the sliding groove is slidably connected to the fixed rod. A fixed shaft is threadedly connected to the arc surface of the fixed rod. A bearing plate is fixedly connected to the bottom end of the connecting frame with the aid of an auxiliary device. Several rough columns are fixedly connected to the lower surface of the bearing plate.

[0007] The aforementioned components achieve the following effects: during the mixing of fermentation broth in the anaerobic fermenter, a stirring rack is used for stirring. During this process, an adjustment device on the surface of the fixed sleeve can be used for auxiliary cleaning, facilitating the cleaning of fermentation materials on the surface of the stirring rack. A servo motor drives the moving ring of the drive rod arc surface to rise and fall, thereby adjusting the position of the entire support plate and the column, making cleaning operations convenient and effective.

[0008] Preferably, positioning rods are slidably passed through both sides of the movable ring, and a cleaning brush plate is fixedly connected to one end of the positioning rod near the fixed sleeve. A spring is sleeved on the arc surface of the positioning rod, and the two ends of the spring are fixedly connected to the positioning rod and the movable ring, respectively.

[0009] The effect achieved by the above-mentioned components is that when the position of the moving ring is raised or lowered, the surface of the fixed sleeve can be cleaned and protected by the cleaning brush plate set on the inner wall of the moving ring.

[0010] Preferably, the plurality of the hair columns are nylon columns, and the plurality of the hair columns are evenly distributed on the lower surface of the bearing plate.

[0011] The effect achieved by the above components is that, with the help of the nylon material, the bushings have good mechanical strength and wear resistance, and can effectively clean the surface of the mixing rack.

[0012] Preferably, the cross-section of the slide is vertical, and the length of the slide is adapted to the length of the fixing frame.

[0013] The effect achieved by the above components is that, with the help of the vertical sliding groove, they can effectively slide and retract with the fixing rod on the surface of the fixing frame, which facilitates the precise adjustment and limiting of the position of the bearing plate and the column.

[0014] Preferably, the auxiliary device is located at one end of the connecting frame and the support plate that are close to each other. The auxiliary device includes a fixed plate and two adjusting frames. The surface of the fixed plate is fixedly connected to the bottom surface of the connecting frame. An inlay plate is fixedly connected to the surface of the support plate. The surface of the inlay plate is slidably inserted into the inner wall of the fixed plate. Two auxiliary rods are fixedly connected to both sides of the fixed plate. The two adjusting frames are located at both ends of the inlay plate. Connecting plates are fixedly connected to both sides of the adjusting frames. The inner wall of the connecting plate slides through the arc surface of the auxiliary rod. A tension spring is sleeved on the arc surface of the auxiliary rod. The two ends of the tension spring are fixedly connected to the auxiliary rod and the connecting plate, respectively. The inner wall of the adjusting frame is slidably inserted into the surface of the inlay plate.

[0015] The effect achieved by the above-mentioned components is that, during the cleaning process of the mixing rack, the auxiliary device set at the bottom of the connecting frame can be used to replace and limit the bearing plate and the burr column, which helps to better clean the entire mixing rack.

[0016] Preferably, the surface of the adjustment frame is provided with a plurality of friction grooves, which are evenly distributed on the upper surface of the adjustment frame.

[0017] The effect achieved by the above components is that when the position of the adjustment frame is moved, the friction groove on the upper surface of the adjustment frame can be used for auxiliary operation.

[0018] Preferably, guide grooves are provided on both sides of the inlay plate, and guide blocks are fixedly connected to both sides of the inner wall of the adjustment frame, with the surface of the guide blocks interlocking with the inner wall of the guide groove.

[0019] The effect achieved by the above components is that when the adjustment frame and the inlay plate are inserted, the connection between the guide groove and the guide block can make the entire support plate and the fixed plate more secure.

[0020] Compared with related technologies, the self-cleaning anaerobic fermentation stirring paddle provided by this utility model has the following beneficial effects:

[0021] By operating the adjustment device, the entire surface of the mixing rack can be cleaned. The servo motor drives the moving ring of the drive rod arc surface to adjust the height, so that the bearing plate at the bottom of the connecting frame drives the bristle column to clean the surface of the mixing rack, which helps to facilitate better operation and use of the mixing rack.

[0022] By operating the auxiliary device, the bearing plate and the rough column can be replaced after long-term use. The fixed plate at the bottom of the connecting frame is inserted into the inlay plate fixed on the upper surface of the bearing plate. At the same time, the adjustable frame on both sides of the fixed plate is connected and fixed with the inlay plate, so as to facilitate and quickly replace the bearing plate and the rough column and make it effective. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a self-cleaning anaerobic fermentation stirring paddle provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows the structure of the regulating device.

[0025] Figure 3 for Figure 1 The enlarged structural diagram at point A is shown below;

[0026] Figure 4 for Figure 1 The diagram shows the structure of the auxiliary device.

[0027] The following are the labeling elements in the diagram: 1. Drive motor; 2. Support and fixing component; 3. Stirring rod; 4. Adjustment device; 401. Servo motor; 402. Fixing frame; 403. Limiting rod; 404. Drive rod; 405. Moving ring; 406. Positioning rod; 407. Cleaning brush; 408. Spring; 409. Fixing frame; 410. Connecting frame; 411. Fixing rod; 412. Fixing shaft; 413. Slide groove; 414. Bearing plate; 415. Column; 5. Auxiliary device; 51. Inlay plate; 52. Guide groove; 53. Auxiliary rod; 54. Adjustment frame; 55. Tension spring; 56. Connecting plate; 57. Friction groove; 58. Guide block; 59. Fixing plate; 6. Stirring frame; 7. Fixing sleeve. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 4 The present invention provides a self-cleaning anaerobic fermentation stirring paddle, comprising: a support fixing component 2 and an auxiliary device 5. A fixing sleeve 7 is fixedly connected to the bottom surface of the support fixing component 2. A stirring rod 3 is rotatably connected to the inner wall of the fixing sleeve 7. A drive motor 1 is fixedly connected to the upper end of the stirring rod 3. A stirring frame 6 is fixedly connected to the bottom end of the stirring rod 3. An adjustment device 4 is provided on the arc surface of the fixing sleeve 7.

[0031] In the embodiments of this utility model, please refer to Figure 2 , Figure 3 and Figure 4 The adjusting device 4 includes two fixed frames 402 and a connecting frame 410. One side of each fixed frame 402 is fixedly connected to the surface of the fixed sleeve 7. A drive rod 404 is rotatably connected to the inner wall of one fixed frame 402. A servo motor 401 is fixedly connected to the surface of the supporting fixing member 2 at the position corresponding to the drive rod 404. The output end of the servo motor 401 is fixedly connected to the drive rod 404. Limiting rods 403 are fixedly connected to both ends of the inner wall of the other fixed frame 402. A moving ring 405 slides through the arc surface of the fixed sleeve 7. One side of the inner wall of the moving ring 405 is threadedly connected to the drive rod 404, and the other side of the inner wall of the moving ring 405 slides through the arc surface of the limiting rod 403. Fixed frames 409 are fixedly connected to both ends of the moving ring 405. A fixing rod 411 is fixedly connected to the surface of the fixed frame 409. The upper end of the connecting frame 410... A groove 413 is provided on the surface. The inner wall of the groove 413 is slidably connected to the fixed rod 411. The arc surface of the fixed rod 411 is threadedly connected to the fixed shaft 412. The bottom end of the connecting frame 410 is fixedly connected to the bearing plate 414 with the aid of the auxiliary device 5. Several hair columns 415 are fixedly connected to the lower surface of the bearing plate 414. Positioning rods 406 slide through both sides of the moving ring 405. A cleaning brush plate 407 is fixedly connected to one end of the positioning rod 406 near the fixed sleeve 7. A spring 408 is sleeved on the arc surface of the positioning rod 406. The two ends of the spring 408 are fixedly connected to the positioning rod 406 and the moving ring 405 respectively. Several hair columns 415 are nylon columns and are evenly distributed on the lower surface of the bearing plate 414. The cross-section of the groove 413 is vertical. The length of the groove 413 is adapted to the length of the fixed frame 409.

[0032] In the embodiments of this utility model, please refer to Figure 4The auxiliary device 5 is located at one end of the connecting frame 410 and the support plate 414 that are close to each other. The auxiliary device 5 includes a fixed plate 59 and two adjusting frames 54. The surface of the fixed plate 59 is fixedly connected to the bottom surface of the connecting frame 410. An inlay plate 51 is fixedly connected to the surface of the support plate 414. The surface of the inlay plate 51 is slidably inserted into the inner wall of the fixed plate 59. Two auxiliary rods 53 are fixedly connected to both sides of the fixed plate 59. The two adjusting frames 54 are located at both ends of the inlay plate 51. Connecting plates 56 are fixedly connected to both sides of the adjusting frames 54. The inner wall of the 6 slides through the arc surface of the auxiliary rod 53. The arc surface of the auxiliary rod 53 is fitted with a tension spring 55. The two ends of the tension spring 55 are fixedly connected to the auxiliary rod 53 and the connecting plate 56 respectively. The inner wall of the adjusting frame 54 slides into the surface of the inlay plate 51. The surface of the adjusting frame 54 is provided with several friction grooves 57. The several friction grooves 57 are evenly distributed on the upper surface of the adjusting frame 54. The two sides of the inlay plate 51 are provided with guide grooves 52. The two sides of the inner wall of the adjusting frame 54 are fixedly connected with guide blocks 58. The surface of the guide blocks 58 is inserted into the inner wall of the guide groove 52.

[0033] The working principle of the self-cleaning anaerobic fermentation stirring paddle provided by this utility model is as follows: After the stirring paddle in the anaerobic fermentation tank has been used for a long time, in order to facilitate quick cleaning of the stirring paddle, the adjusting device 4 set at the upper end of the stirring frame 6 corresponding to the fixed sleeve 7 can be used for auxiliary operation. When it is necessary to clean the surface of the stirring frame 6, firstly, the servo motor 401 is started, so that the servo motor 401 drives the drive rod 404 in the fixed frame 402 to rotate, so that the moving ring 405 on the arc surface of the drive rod 404 moves up and down along the limit rod 403 until the connecting frame 410 on both sides of the entire moving ring 405 drives the bearing plate 414 and the hair column 415 to correspond to the position of the stirring frame 6. Then, the drive motor 1 drives the stirring rod 3 and the stirring frame 6 to rotate, so that the several hair columns 415 fixed on the lower surface of the bearing plate 414 are aligned with the stirring frame 6. During the surface cleaning operation, the sliding adjustment can be achieved by using the sliding groove 413 on the upper surface of the connecting frame 410 and the fixing rod 411 fixed on the surface of the fixing frame 409, which facilitates the effective adjustment of the position of the entire bearing plate 414 and the column 415. During the long-term cleaning of the entire mixing rack 6, the bearing plate 414 and the column 415 can be replaced and limited by the auxiliary device 5. At this time, the replaced bearing plate 414 is first slid through the fixing plate 59 on the lower surface of the connecting frame 410 by the inlay plate 51. Then, the adjustment frames 54 on both sides of the fixing plate 59 are pulled, so that the adjustment frames 54 can insert and limit the inlay plate 51 by the squeezing force generated by the tension spring 55 on the arc surface of the auxiliary rod 53. At this time, the position between the inlay plate 51 and the fixing plate 59 is relatively fixed, thereby effectively replacing and fixing the entire bearing plate 414 and the column 415.

[0034] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A self-cleaning anaerobic fermentation stirring paddle, characterized in that, include: The support fixture (2) and auxiliary device (5) are provided. A fixed sleeve (7) is fixedly connected to the bottom surface of the support fixture (2). A stirring rod (3) is rotatably connected to the inner wall of the fixed sleeve (7). A drive motor (1) is fixedly connected to the upper end of the stirring rod (3). A stirring frame (6) is fixedly connected to the bottom end of the stirring rod (3). An adjustment device (4) is provided on the arc surface of the fixed sleeve (7). The adjustment device (4) includes two fixed frames (402) and a connecting frame (410). One side of the two fixed frames (402) is fixedly connected to the surface of the fixed sleeve (7). A drive rod (404) is rotatably connected to the inner wall of one of the fixed frames (402). A servo motor (401) is fixedly connected to the surface of the support fixture (2) at the position corresponding to the drive rod (404). The output end of the servo motor (401) is fixedly connected to the drive rod (404). The other fixed frame (402) is fixedly connected to the drive rod (404). The inner walls of the fixed sleeve (7) are fixedly connected to two ends of a limiting rod (403). A movable ring (405) slides through the arc surface of the fixed sleeve (7). One side of the inner wall of the movable ring (405) is threadedly connected to the drive rod (404), and the other side of the inner wall of the movable ring (405) slides through the arc surface of the limiting rod (403). Fixed frames (409) are fixedly connected to both ends of the movable ring (405). The surfaces of the fixed frames (409) are fixedly connected to... A fixed rod (411) is attached to the connecting frame (410). A sliding groove (413) is provided on the upper surface of the connecting frame (410). The inner wall of the sliding groove (413) is slidably connected to the fixed rod (411). A fixed shaft (412) is threadedly connected to the arc surface of the fixed rod (411). A bearing plate (414) is fixedly connected to the bottom end of the connecting frame (410) with the aid of an auxiliary device (5). Several rough columns (415) are fixedly connected to the lower surface of the bearing plate (414).

2. The self-cleaning anaerobic fermentation stirring paddle according to claim 1, characterized in that, Positioning rods (406) slide through both sides of the moving ring (405). A cleaning brush plate (407) is fixedly connected to one end of the positioning rod (406) near the fixed sleeve (7). A spring (408) is sleeved on the arc surface of the positioning rod (406). The two ends of the spring (408) are fixedly connected to the positioning rod (406) and the moving ring (405) respectively.

3. The self-cleaning anaerobic fermentation stirring paddle according to claim 1, characterized in that, Several of the aforementioned columns (415) are nylon columns, and the aforementioned columns (415) are evenly distributed on the lower surface of the bearing plate (414).

4. The self-cleaning anaerobic fermentation stirring paddle according to claim 1, characterized in that, The slide (413) has a vertical cross-section, and the length of the slide (413) is adapted to the length of the fixing frame (409).

5. The self-cleaning anaerobic fermentation stirring paddle according to claim 1, characterized in that, The auxiliary device (5) is located at one end of the connecting frame (410) and the support plate (414) that are close to each other. The auxiliary device (5) includes a fixed plate (59) and two adjusting frames (54). The surface of the fixed plate (59) is fixedly connected to the bottom surface of the connecting frame (410). An inlay plate (51) is fixedly connected to the surface of the support plate (414). The surface of the inlay plate (51) is slidably inserted into the inner wall of the fixed plate (59). Two auxiliary frames are fixedly connected to both sides of the fixed plate (59). The auxiliary rod (53) and the two adjustment frames (54) are located at both ends of the inlay plate (51). The two sides of the adjustment frame (54) are fixedly connected to the connecting plate (56). The inner wall of the connecting plate (56) slides through the arc surface of the auxiliary rod (53). The arc surface of the auxiliary rod (53) is fitted with a tension spring (55). The two ends of the tension spring (55) are fixedly connected to the auxiliary rod (53) and the connecting plate (56) respectively. The inner wall of the adjustment frame (54) slides into the surface of the inlay plate (51).

6. The self-cleaning anaerobic fermentation stirring paddle according to claim 5, characterized in that, The surface of the adjustment frame (54) is provided with a plurality of friction grooves (57), which are evenly distributed on the upper surface of the adjustment frame (54).

7. The self-cleaning anaerobic fermentation stirring paddle according to claim 5, characterized in that, The two sides of the inlay plate (51) are provided with guide grooves (52), and the two sides of the inner wall of the adjustment frame (54) are fixedly connected with guide blocks (58), and the surface of the guide block (58) is inserted into the inner wall of the guide groove (52).