Fertilizer mixing device with anti-sticking wall structure

Abstract

The utility model relates to fertilizer stirring mixing technical field, concretely is fertilizer stirring mixing device with prevent sticking wall structure, including the chassis and mounting bracket, and set up control unit at one side of chassis, the fixed mounting of stirring tank has on the chassis, and the mounting bracket is connected through the clamping groove in the top of chassis, the annular interlayer cavity is opened in stirring tank, and four groups annular distribution's ultrasonic transducer are embedded in the cavity of stirring tank along the circumferential direction, and the inner wall of stirring tank is pasted with the vibration metal sheet that sets up with ultrasonic transducer one to one, and at least three capacitive wall sticking sensors are embedded in the cavity of stirring tank, and the rotary connection of mounting bracket has the rotary frame. Through the double mechanism of integrated ultrasonic wave anti -sticking and initiative air blowing and cleaning stick, effectively solved the wall sticking problem in high viscosity fertilizer stirring, through the spacing adjusting mechanism of innovation, improved the adaptability of nozzle mechanism to different stirring devices.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer mixing technology, specifically a fertilizer mixing device with an anti-sticking wall structure. Background Technology

[0002] The mixing process in fertilizer production is a core step in ensuring the uniformity of product composition and the stability of its quality. In actual production, especially when processing high-viscosity organic fertilizers, water-soluble fertilizers, or moist compound fertilizers, materials easily adhere to the inner wall of the mixing tank. This adhesion not only significantly reduces the effective mixing volume and production efficiency but also leads to batch-to-batch cross-contamination, inconsistent product quality, and increased mixing resistance, resulting in abnormally high equipment energy consumption and potential wear and tear on mechanical parts.

[0003] Existing technologies have developed various solutions, but all have inherent limitations. The most basic method is to coat the inner wall with an anti-stick coating such as polytetrafluoroethylene. Although this method has a certain passive anti-sticking effect, the coating is prone to failure under mechanical wear and chemical corrosion, and its lifespan is limited. Mechanical cleaning methods using scraper blades can remove some adhering substances, but there are blind spots in cleaning, and the hard scraper may damage the tank wall with long-term operation. For highly viscous materials, the scraper itself may become coated and lose its function. Some improved solutions have introduced compressed air purging technology, which sprays airflow onto the inner wall through nozzles fixed to the top or side of the tank. However, the coverage of fixed nozzles is limited, with a large number of cleaning blind spots, making it impossible to achieve comprehensive and uniform cleaning of the tank wall. In addition, the nozzle position is usually fixed, which cannot be adapted to mixing tanks of different depths or sizes, thus limiting its application range. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a fertilizer mixing device with an anti-sticking wall structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fertilizer mixing device with an anti-stick wall structure, including a base frame and a mounting frame, and a control unit disposed on one side of the base frame. A mixing tank is fixedly installed on the base frame, and the mounting frame is snapped onto the top of the base frame through a slot. An annular sandwich cavity is opened inside the mixing tank. Four sets of annularly distributed ultrasonic transducers are embedded in the cavity of the mixing tank along the circumferential direction. Vibrating metal plates corresponding to the ultrasonic transducers are attached to the inner wall of the mixing tank. The inner surface of the vibrating metal plates is coated with an anti-stick coating. An ultrasonic controller electrically connected to the ultrasonic transducers is fixed on the base frame. At least three capacitive wall-adhesion sensors are embedded in the cavity of the mixing tank. A rotating frame is rotatably connected to the mounting bracket, and a movable frame is mounted on the rotating frame. Three sets of nozzles are installed at intervals along the axial direction on the movable frame. An air compressor is also fixed on the base frame. The air compressor is connected to the nozzles through an air pipe. A pressure regulating valve is connected in series on the air pipe. The control unit is electrically connected to the ultrasonic controller, the capacitive wall-adhesion sensors, the air compressor, and the pressure regulating valve, respectively.

[0006] Preferably, a toothed ring is fitted on the outer side of the top of the mixing tank, and a motor is fixed on the mounting frame. The output end of the motor is connected to a drive wheel that meshes with the toothed ring. The motor drives the drive wheel to rotate, causing the rotating frame to move in a circular motion around the axis of the mixing tank. A cylinder is connected between the rotating frame and the moving frame. The end of the cylinder piston rod is fixed to the moving frame, and the cylinder drives the moving frame to move along the axial direction of the rotating frame.

[0007] Preferably, the outer surface of the vibrating metal sheet is tightly fitted to the ultrasonic transducer, the inner surface is flush with the inner wall of the mixing tank, the anti-stick coating is a polytetrafluoroethylene coating or a nano-ceramic coating, the cavity is filled with acid and alkali resistant sealant, and the ultrasonic transducer is connected to the ultrasonic controller through a sealed wire passing through the cavity.

[0008] Preferably, the multiple sets of nozzles are equidistantly distributed, and the movable frame is provided with a spacing adjustment mechanism for adjusting the spacing between the multiple sets of nozzles.

[0009] Preferably, the spacing adjustment mechanism includes a guide frame slidably mounted on a movable frame, three sets of equidistant adjustment frames are provided between the guide frame and the movable frame, and the three sets of nozzles are respectively fixedly mounted on one set of adjustment frames. The upper adjustment frame is fixedly mounted on the movable frame, the lower adjustment frame is fixedly mounted on the guide frame, and the middle adjustment frame can be slidably connected to the guide frame or the movable frame through a sliding groove.

[0010] Preferably, two adjacent sets of adjustment frames are movably connected by two sets of first and second links that are hinged to each other. The right ends of the two sets of first links are rotatably connected by a rotating shaft, and the left ends of the two sets of first links are rotatably mounted with sliders, which are slidably connected to the corresponding adjustment frames. The left ends of the two sets of second links are rotatably connected by a rotating shaft, and the right ends of the two sets of second links are rotatably connected to the corresponding adjustment frames by a rotating shaft.

[0011] Preferably, a mounting rod is fixedly installed on the movable frame, a first telescopic rod is slidably installed inside the mounting rod, a second telescopic rod is slidably installed inside the first telescopic rod, and the end of the second telescopic rod away from the mounting rod is fixedly connected to the guide frame. A threaded rod is rotatably installed inside the mounting rod, the threaded rod passes through the first telescopic rod and is threadedly connected to the first telescopic rod. A threaded tube is rotatably installed inside the first telescopic rod, the threaded tube passes through the second telescopic rod and is threadedly connected to the second telescopic rod.

[0012] Preferably, the threaded rod has two sets of symmetrically distributed keyways, and the threaded tube has two sets of symmetrically distributed key blocks. The key blocks are correspondingly arranged with the keyways, and the threaded tube is slidably sleeved with the threaded rod through the corresponding key blocks and keyways.

[0013] Compared with the prior art, the present invention provides a fertilizer mixing device with an anti-sticking wall structure, which has the following beneficial effects: (1) By integrating the dual mechanisms of ultrasonic anti-sticking and active air purging to remove adhesion, the problem of wall adhesion in the mixing of high viscosity fertilizer is effectively solved. Specifically, the ultrasonic transducer driven by the ultrasonic controller can excite the vibrating metal sheet to generate high frequency micro-amplitude vibration, which can actively destroy the adhesion between the material and the tank wall from the physical level, reducing the possibility of initial adhesion of the material. At the same time, the capacitive wall adhesion sensor can monitor the adhesion status of the tank wall in real time and feed the signal back to the control unit, thereby intelligently controlling the nozzles provided by the air compressor and precisely adjusted by the pressure regulating valve to perform targeted purging. The purging system drives the rotating frame to revolve along the tank wall by the motor, and combines the cylinder to push the moving frame and nozzle group to move axially, realizing three-dimensional cleaning of the inner wall of the mixing tank without dead angles. This not only greatly improves the reliability of the anti-sticking effect and the efficiency of the removal of adhesion, but also effectively avoids the wear problem caused by mechanical scraping, ensures the uniformity of product quality, and reduces energy consumption and equipment maintenance costs.

[0014] (2) The innovative spacing adjustment mechanism improves the adaptability of the nozzle mechanism to different stirring devices. This mechanism utilizes the cross-hinged structure of the first and second connecting rods to synchronously and proportionally convert the relative displacement between the moving frame and the guide frame into the linkage change of the spacing between the three sets of adjusting frames, thereby precisely adjusting the axial distribution of each nozzle. By driving the rotation of the threaded rod through the motor inside the mounting rod, the first telescopic rod and the nested second telescopic rod can be driven to extend and retract in sequence, thereby controlling the movement of the guide frame and ultimately achieving synchronous and continuous adjustment of the spacing between the three sets of nozzles. This ingenious design allows a single nozzle system to flexibly adapt to stirring tanks of different depths and capacities, ensuring that the nozzles and tank walls maintain the optimal purging distance under any working conditions. This greatly improves the versatility of the equipment and the consistency of the cleaning effect, overcoming the inherent defect of blind spots in fixed nozzles. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the structural separation of the base frame and mounting frame of this utility model; Figure 3 This is a schematic diagram of the internal structure of the cavity in this utility model; Figure 4 This is a schematic diagram of the structure of the mobile frame of this utility model; Figure 5 This is a schematic diagram of the spacing adjustment mechanism of this utility model; Figure 6 This utility model Figure 5 A magnified schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Base frame; 2. Mixing tank; 3. Control unit; 4. Mounting frame; 5. Rotating frame; 6. Gear ring; 7. Drive wheel; 8. Cavity; 9. Ultrasonic transducer; 10. Vibrating metal plate; 11. Anti-stick coating; 12. Ultrasonic controller; 13. Capacitive wall adhesion sensor; 14. Moving frame; 15. Nozzle; 16. Cylinder; 17. Gap adjustment mechanism; 1701. Guide frame; 1702. Adjusting frame; 1703. First connecting rod; 1704. Second connecting rod; 1705. Slider; 1706. Mounting rod; 1707. First telescopic rod; 1708. Second telescopic rod; 1709. Threaded rod; 1710. Keyway; 1711. Key block; 18. Motor; 19. Air compressor; 20. Pressure regulating valve; 21. Air pipe. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] This embodiment proposes a fertilizer mixing device with an anti-sticking wall structure. Figures 1-6As shown, the device includes a base frame 1, a mounting bracket 4, and a control unit 3 disposed on one side of the base frame 1. Its features include: a mixing tank 2 fixedly mounted on the base frame 1; the mounting bracket 4 being snapped onto the top of the base frame 1 via a slot; an annular cavity 8 formed inside the mixing tank 2; four sets of annularly distributed ultrasonic transducers 9 embedded in the cavity 8 along the circumferential direction; vibrating metal plates 10 corresponding one-to-one with the ultrasonic transducers 9 attached to the inner wall of the mixing tank 2; and an anti-stick coating 11 applied to the inner surface of the vibrating metal plates 10. The base frame 1 is fixed with a control unit 3 corresponding to the ultrasonic transducers 9. The ultrasonic controller 12 is electrically connected to the device 9; at least three capacitive wall-adhesion sensors 13 are embedded in the cavity 8 of the mixing tank 2; a rotating frame 5 is rotatably connected to the mounting frame 4; a movable frame 14 is mounted on the rotating frame 5; three sets of nozzles 15 are installed on the movable frame 14 at axial intervals; an air compressor 19 is also fixed on the base frame 1; the air compressor 19 is connected to the nozzles 15 through an air pipe 21; a pressure regulating valve 20 is connected in series on the air pipe 21; the control unit 3 is connected to the ultrasonic controller 12, the capacitive wall-adhesion sensors 13, the air compressor 19, and the pressure regulating valve respectively. The ultrasonic transducer 9, driven by the ultrasonic controller 12, can excite the vibrating metal sheet 10 to generate high-frequency micro-amplitude vibrations. This can actively disrupt the adhesion between the material and the tank wall at a physical level, reducing the possibility of initial material adhesion. At the same time, the capacitive adhesion sensor 13 can monitor the adhesion status of the tank wall in real time and feed the signal back to the control unit 3. This allows for intelligent control of the nozzle 15, which is supplied with air by the air compressor 19 and precisely pressurized by the pressure regulating valve 20, to perform targeted purging. This purging system is driven by the motor 18 to rotate the rotating frame 5 along the tank wall. Combined with the cylinder 16 pushing the moving frame 14 and nozzle 15 to move axially, a three-dimensional cleaning of the inner wall of the mixing tank 2 without dead angles is achieved. This not only greatly improves the reliability of the anti-sticking effect and the cleaning efficiency, but also effectively avoids the wear problem caused by mechanical scraping, ensures the uniformity of product quality, and reduces energy consumption and equipment maintenance costs. The air pipe 21 is made of a retractable material and is rotatably connected to the output end of the air compressor 19. The rotating frame 5 rotates back and forth in a circular motion under the action of the drive wheel 7 and the toothed ring 6 to avoid the air pipe 21 from getting tangled during the movement.

[0019] In this embodiment, reference Figures 1-4As shown, a toothed ring 6 is fitted on the outer side of the top of the mixing tank 2. A motor 18 is fixed on the mounting frame 4. The output end of the motor 18 is connected to a drive wheel 7 that meshes with the toothed ring 6. The motor 18 drives the drive wheel 7 to rotate, causing the rotating frame 5 to move in a circular motion around the axis of the mixing tank 2. A cylinder 16 is connected between the rotating frame 5 and the moving frame 14. The piston rod end of the cylinder 16 is fixed to the moving frame 14. The cylinder 16 drives the moving frame 14 to move along the axis of the rotating frame 5. The outer surface of the vibrating metal plate 10 is tightly fitted to the ultrasonic transducer 9, and its inner surface is flush with the inner wall of the mixing tank 2. The anti-stick coating 11 is a polytetrafluoroethylene coating or a nano-ceramic coating. The cavity 8 is filled with acid and alkali resistant sealant. The ultrasonic transducer 9 is connected to the ultrasonic controller 12 through a sealed wire passing through the cavity 8. During the mixing process, the capacitive wall adhesion sensor 13, which is uniformly embedded in the cavity 8 of the tank wall, continuously detects the adhesion thickness of the material on the inner wall. When the adhesion exceeds a preset threshold, the sensor transmits a signal to the control unit 3. The control unit 3 then activates a dual anti-sticking and cleaning program, instructing the ultrasonic controller 12 to work and excite the annularly distributed ultrasonic transducers 9 to generate high-frequency mechanical vibration. This vibration is transmitted to the inner side of the tank wall through the tightly fitted vibrating metal plate 10. The anti-stick coating 11 on the surface works in conjunction with high-frequency micro-amplitude vibration to effectively weaken the adhesion between the material and the wall, achieving initial "anti-sticking" and "de-sticking". The control unit 3 starts the air compressor 19 and adjusts the pressure regulating valve 20 to deliver compressed air to the nozzle 15 through the air pipe 21 at the set pressure. At the same time, the control unit 3 controls the motor 18 to run, and through the meshing of the drive wheel 7 and the gear ring 6, drives the entire rotating frame 5 to make a circular motion along the axis of the mixing tank 2. The cylinder 16 can also be started to push the moving frame 14 and the nozzle 15 on it to move along the axis of the rotating frame 5, so that the nozzle 15 forms a scanning trajectory covering the entire inner wall of the tank under the combined motion of revolution and self-axis, and performs precise and efficient compressed air blowing on the adhesion area to completely peel off the loosened material.

[0020] In this embodiment, reference Figure 5 and Figure 6As shown, multiple sets of nozzles 15 are equidistantly distributed. The movable frame 14 is provided with a spacing adjustment mechanism 17 for adjusting the spacing between the multiple sets of nozzles 15. The spacing adjustment mechanism 17 includes a guide frame 1701 slidably mounted on the movable frame 14. Three sets of equidistantly distributed adjustment frames 1702 are provided between the guide frame 1701 and the movable frame 14. The three sets of nozzles 15 are respectively fixedly mounted on one set of adjustment frames 1702. The upper adjustment frame 1702 is fixedly mounted on the movable frame 14, and the lower adjustment frame 1702 is fixedly mounted on the guide frame 1701. The middle adjustment frame 1702 can be slidably connected to the guide frame 1701 or the movable frame 14 through a sliding groove. Two adjacent sets of adjustment frames 1702 are movably connected by two sets of interlocking first connecting rods 1703 and second connecting rods 1704. The right ends of the two sets of first connecting rods 1703 are rotatably connected by a pivot, and the left ends of the two sets of first connecting rods 1703 are rotatably mounted with sliders 1705, which are slidably connected to the corresponding adjustment frames 1702. The left ends of the two sets of second connecting rods 1704 are rotatably connected by a pivot, and the right ends of the two sets of second connecting rods 1704 are rotatably connected to the corresponding adjustment frames 1702 by a pivot.A mounting rod 1706 is fixedly installed on the movable frame 14. A first telescopic rod 1707 is slidably installed inside the mounting rod 1706. A second telescopic rod 1708 is slidably installed inside the first telescopic rod 1707, and the end of the second telescopic rod 1708 away from the mounting rod 1706 is fixedly connected to the guide frame 1701. A threaded rod 1709 is rotatably installed inside the mounting rod 1706. The threaded rod 1709 passes through the first telescopic rod 1707 and is threadedly connected to the first telescopic rod 1707. A threaded tube is rotatably installed inside the first telescopic rod 1707. The threaded tube passes through the second telescopic rod 1708 and is threadedly connected to it. Two sets of symmetrically distributed keyways 1710 are provided on the threaded rod 1709. Two sets of symmetrically distributed key blocks 1711 are provided inside the threaded tube. The key blocks 1711 correspond to the keyways 1710, and the threaded tube slides into the threaded rod 1709 through the corresponding key blocks 1711 and keyways 1710. The adjustable spacing of the nozzle 15 is key to its precise purging. When it is necessary to adapt to mixing tanks 2 of different depths or optimize the purging effect, the operator can... The drive gap adjustment mechanism 17 is activated to start the motor inside the mounting rod 1706, which drives the threaded rod 1709 to rotate. Due to the threaded engagement, the first telescopic rod 1707 will extend or retract relative to the mounting rod 1706. Because the threaded tube is slidably connected to the threaded rod 1709 through the engagement of the key block 1711 and the keyway 1710, but without relative rotation, when the first telescopic rod 1707 has reached its travel limit, continued rotation of the threaded rod 1709 will force the second telescopic rod 1708 to extend or retract relative to it under the action of the thread inside the threaded tube. The guide frame 1701 fixed to it moves away from or closer to the movable frame 14. The change in the relative distance between the guide frame 1701 and the movable frame 14 forces the angle of the two sets of cross links hinged between them to change. This movement is synchronously transmitted to the middle movable adjustment frame 1702, which ultimately realizes that the spacing between the three sets of adjustment frames 1702 above expands or shrinks synchronously and proportionally, thereby quickly and accurately adjusting the axial distribution position of all nozzles 15 to ensure that the purging airflow can cover the entire height of the tank wall without dead angles.

[0021] In this embodiment, during the mixing process, a capacitive wall adhesion sensor 13, uniformly embedded in the cavity 8 of the tank wall, continuously detects the adhesion thickness of the material on the inner wall. When the adhesion exceeds a preset threshold, the sensor transmits a signal to the control unit 3. The control unit 3 then activates a dual anti-sticking and de-adhesion program, instructing the ultrasonic controller 12 to operate and excite the annularly distributed ultrasonic transducers 9 to generate high-frequency mechanical vibration. This vibration is transmitted to the inner side of the tank wall through the tightly fitted vibrating metal sheet 10. The anti-sticking coating 11 on its surface works in conjunction with the high-frequency micro-amplitude vibration to effectively weaken the adhesion force between the material and the wall, achieving initial "anti-sticking" and "de-adhesion". To remove the adhesive, control unit 3 starts air compressor 19 and adjusts pressure regulating valve 20, so that compressed air is delivered to nozzle 15 through air pipe 21 at a set pressure. At the same time, control unit 3 controls motor 18 to operate, and through the meshing of drive wheel 7 and gear ring 6, drives the entire rotating frame 5 to move in a circular motion along the axis of mixing tank 2. It can also start cylinder 16 to push moving frame 14 and nozzle 15 on it to move along the axis of rotating frame 5, so that nozzle 15 forms a scanning trajectory covering the entire inner wall of the tank under the combined motion of revolution and self-axis, and performs precise and efficient compressed air blowing on the adhesion area to completely peel off the loosened material. The adjustable nozzle spacing of nozzle 15 is key to its precise purging. When it is necessary to adapt to mixing tanks 2 of different depths or optimize the purging effect, the operator can activate the adjustable spacing mechanism 17 to start the motor inside the mounting rod 1706 to drive the threaded rod 1709 to rotate. Due to the threaded engagement, the first telescopic rod 1707 will extend or retract relative to the mounting rod 1706. Since the threaded tube maintains a sliding connection with the threaded rod 1709 through the engagement of the key block 1711 and the keyway 1710, but without relative rotation, when the first telescopic rod 1707 has reached its travel limit, continuing to rotate the threaded rod 1709 will force... The second telescopic rod 1708 extends or retracts relative to the threaded tube under the action of the internal thread, thereby causing the guide frame 1701 fixed thereto to move away from or closer to the moving frame 14. The change in the relative distance between the guide frame 1701 and the moving frame 14 will force the angle of the two sets of cross linkages hinged between them to change. This movement is synchronously transmitted to the middle movable adjustment frame 1702, and finally realizes that the distance between the three sets of adjustment frames 1702 above is synchronously and proportionally expanded or reduced, thereby quickly and accurately adjusting the axial distribution position of all nozzles 15 to ensure that the purging airflow can cover the entire height of the tank wall without dead angles.

[0022] In the description of this utility model, the terms "first," "second," "another," and "yet another" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0024] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fertilizer mixing device with an anti-sticking wall structure, comprising a base frame (1) and a mounting frame (4), and a control unit (3) disposed on one side of the base frame (1), characterized in that: A mixing tank (2) is fixedly installed on the base frame (1). The mounting bracket (4) is snapped onto the base frame (1) through a slot. An annular sandwich cavity (8) is opened inside the mixing tank (2). Four sets of annularly distributed ultrasonic transducers (9) are embedded in the cavity (8) of the mixing tank (2) along the circumferential direction. Vibrating metal plates (10) corresponding to the ultrasonic transducers (9) are attached to the inner wall of the mixing tank (2). The inner surface of the vibrating metal plates (10) is coated with an anti-stick coating (11). An ultrasonic controller (12) electrically connected to the ultrasonic transducers (9) is fixed on the base frame (1). At least three capacitive wall-adhesion sensors (13) are embedded in the cavity (8) of the mixing tank (2). A rotating frame (5) is rotatably connected to the mounting frame (4). A movable frame (14) is mounted on the rotating frame (5). Three sets of nozzles (15) are installed on the movable frame (14) at intervals along the axial direction. An air compressor (19) is also fixed on the base frame (1). The air compressor (19) is connected to the nozzles (15) through an air pipe (21). A pressure regulating valve (20) is connected in series on the air pipe (21). The control unit (3) is electrically connected to the ultrasonic controller (12), the capacitive wall-adhesion sensor (13), the air compressor (19), and the pressure regulating valve (20), respectively.

2. The fertilizer mixing device with anti-sticking wall structure according to claim 1, characterized in that: A toothed ring (6) is fitted on the outer side of the top of the mixing tank (2). A motor (18) is fixed on the mounting frame (4). The output end of the motor (18) is connected to a drive wheel (7) that meshes with the toothed ring (6). The motor (18) drives the drive wheel (7) to rotate, causing the rotating frame (5) to move in a circular motion around the axis of the mixing tank (2). A cylinder (16) is connected between the rotating frame (5) and the moving frame (14). The piston rod end of the cylinder (16) is fixed to the moving frame (14). The cylinder (16) drives the moving frame (14) to move along the axis of the rotating frame (5).

3. The fertilizer mixing device with anti-sticking wall structure according to claim 1, characterized in that: The outer surface of the vibrating metal sheet (10) is closely attached to the ultrasonic transducer (9), and the inner surface is flush with the inner wall of the mixing tank (2). The anti-stick coating (11) is a polytetrafluoroethylene coating or a nano-ceramic coating. The cavity (8) is filled with acid and alkali resistant sealant. The ultrasonic transducer (9) is connected to the ultrasonic controller (12) through the cavity (8) via a sealed wire.

4. The fertilizer mixing device with anti-sticking wall structure according to any one of claims 1-3, characterized in that: The multiple sets of nozzles (15) are equidistantly distributed, and the moving frame (14) is provided with a spacing adjustment mechanism (17) for adjusting the spacing between the multiple sets of nozzles (15).

5. The fertilizer mixing device with anti-sticking wall structure according to claim 4, characterized in that: The spacing adjustment mechanism (17) includes a guide frame (1701) slidably mounted on the movable frame (14). Three sets of equally spaced adjustment frames (1702) are provided between the guide frame (1701) and the movable frame (14). The three sets of nozzles (15) are respectively fixedly mounted on one set of adjustment frames (1702). The upper adjustment frame (1702) is fixedly mounted on the movable frame (14), and the lower adjustment frame (1702) is fixedly mounted on the guide frame (1701). The middle adjustment frame (1702) can be slidably connected to the guide frame (1701) or the movable frame (14) through a sliding groove.

6. The fertilizer mixing device with anti-sticking wall structure according to claim 5, characterized in that: The two adjacent sets of adjustment frames (1702) are movably connected by two sets of interlocking first links (1703) and second links (1704). The right ends of the two sets of first links (1703) are rotatably connected by a pivot, and the left ends of the two sets of first links (1703) are rotatably mounted with sliders (1705), and the sliders (1705) are slidably connected to the corresponding adjustment frames (1702). The left ends of the two sets of second links (1704) are rotatably connected by a pivot, and the right ends of the two sets of second links (1704) are rotatably connected to the corresponding adjustment frames (1702) by a pivot.

7. The fertilizer mixing device with anti-sticking wall structure according to claim 6, characterized in that: A mounting rod (1706) is fixedly installed on the movable frame (14). A first telescopic rod (1707) is slidably installed inside the mounting rod (1706). A second telescopic rod (1708) is slidably installed inside the first telescopic rod (1707). The end of the second telescopic rod (1708) away from the mounting rod (1706) is fixedly connected to the guide frame (1701). A threaded rod (1709) is rotatably installed inside the mounting rod (1706). The threaded rod (1709) passes through the first telescopic rod (1707) and is threadedly connected to the first telescopic rod (1707). A threaded tube is rotatably installed inside the first telescopic rod (1707). The threaded tube passes through the second telescopic rod (1708) and is threadedly connected to the second telescopic rod (1708).

8. The fertilizer mixing device with anti-sticking wall structure according to claim 7, characterized in that: The threaded rod (1709) has two sets of symmetrically distributed keyways (1710), and the threaded tube has two sets of symmetrically distributed key blocks (1711). The key blocks (1711) are correspondingly arranged with the keyways (1710), and the threaded tube is slidably connected to the threaded rod (1709) through the corresponding key blocks (1711) and keyways (1710).

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