Mixing drum cleaning device

Abstract

The present application relates to the field of tobacco production auxiliary equipment, in particular to a mixing barrel cleaning device. The device comprises a main shaft arranged in parallel in the mixing barrel, which is rotatably installed at both ends of an end cover and driven to rotate by a rotary driver; an inner magnet is arranged in the hollow main shaft and driven to reciprocate along the main shaft by a driving mechanism, and a magnetic force drives an outer magnet to drive a cleaning device to reciprocate along the main shaft; the cleaning device comprises a support, the outer magnet, a cleaning nozzle and a liquid supply pipeline, the nozzle is fixed in a direction towards the upper half area of the mixing barrel and stably moves along the main shaft direction through the liquid supply pipeline. Through the cooperation of the rotation of the main shaft, the magnetic force driving of the inner magnet and the liquid supply pipeline, the device realizes comprehensive and uniform cleaning of the inner wall of the mixing barrel, guarantees food-grade cleanliness, improves cleaning efficiency and ensures operation safety.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for tobacco production, and more specifically to a mixing tank cleaning device. Background Technology

[0002] In tobacco production, flavorings and fragrances are typically added to improve the smoking experience and achieve a uniform and stable aroma distribution. In existing technologies, a mixing drum is generally used for this process. This mixing drum is a horizontally placed rotating drum with a slightly downward-sloping outlet. Side nails, blades, or lifting plates are installed on the inner wall to lift the tobacco material at the bottom to a higher position before it falls back down, thus ensuring thorough mixing of the tobacco material with the flavorings and fragrances.

[0003] During the mixing process, the environment inside the mixing tank is humid, and tobacco production requires a high level of cleanliness, meeting food-grade standards. If there are residual materials or flavorings on the inner wall of the mixing tank, prolonged retention may lead to fermentation and spoilage, thus contaminating the next batch of materials and affecting product quality and safety.

[0004] Currently, cleaning mixing drums mainly relies on manual operation. There are two manual cleaning methods. One is manual entry into the mixing drum: the operator uses a water hose or cleaning tool to rinse the inner wall of the mixing drum. However, because the inner wall of the mixing drum is smooth and has protruding side studs, the operator is prone to slipping or hitting the studs, posing a significant safety hazard. The other method is cleaning with a long-handled cleaning tool: the operator stands at the outlet of the mixing drum and cleans the inner wall with a long-handled cleaning tool. This method is usable for short mixing drums, but for mixing drums longer than ten meters, this method is difficult to cover the entire inner wall, resulting in incomplete cleaning.

[0005] There are also cleaning robots used for pipeline cleaning operations in the existing technology. Although pipeline robots have the ability to move inside tubular objects, their motion mechanism and lubricating oil may cause pollution to the food-grade environment, so they are not suitable for tobacco mixing bins.

[0006] In summary, existing technologies for cleaning mixing tanks have the following problems: low cleaning efficiency, high labor intensity, and poor safety; automated equipment may introduce lubricating oil or other contaminants, making it difficult to meet food-grade cleanliness requirements. Summary of the Invention

[0007] In view of the above-mentioned deficiencies or defects in the prior art, the present invention provides a mixing tank cleaning device that can efficiently and uniformly clean the inner wall of the mixing tank while ensuring food-grade cleanliness requirements, and at the same time avoids manual entry into the mixing tank, thereby improving safety and work efficiency.

[0008] A mixing tank cleaning device, comprising: The main shaft is located inside the mixing tank and is parallel to the axis of the mixing tank; both ends of the main shaft are rotatably mounted on the end caps of the mixing tank. The rotary driver is connected to one end of the spindle and drives the spindle to rotate around the axis. The internal magnet is installed inside the hollow spindle; Displacement actuator, which drives the internal magnet to move within the spindle; A cleaning device is slidably mounted on the outer surface of a main shaft and includes a bracket, an outer magnet, a cleaning nozzle, and a liquid supply line. The outer magnet and the inner magnet are arranged opposite to each other to drive the cleaning device to reciprocate along the main shaft by magnetic force. The liquid supply pipeline is a folded structure composed of multiple rigid pipe sections connected end to end. The pipes are connected by a rotatable connector. The rotation axis of the connector is perpendicular to the main shaft, so that the cleaning nozzle maintains a fixed direction when the main shaft rotates.

[0009] Preferably, the bracket is slidably mounted on the spindle and is clearance-fitted with the spindle to allow cleaning fluid to enter between the bracket and the spindle for lubrication.

[0010] Preferably, the liquid supply pipeline consists of at least two pipe sections connected by a swivel joint, allowing the pipeline to be stored in a folded state and unfolded along the main axis during cleaning operations without deflection.

[0011] Preferably, a backpack box is provided on one end cap of the mixing tank, one end of the main shaft extends into the backpack box, and the displacement drive and cleaning equipment are stored in the backpack box when not in cleaning operation.

[0012] Preferably, the mixing tank is equipped with a valve for opening during cleaning operations, allowing the cleaning equipment to enter the mixing tank along the main shaft, and after cleaning, it is returned to the backpack and the valve is closed.

[0013] Preferably, the displacement driver includes a sprocket system and a servo motor. The drive wheel and guide wheel of the sprocket system are respectively located at both ends of the main shaft, and the chain is fixedly connected to the inner magnet. The servo motor drives the sprocket system to rotate forward or backward, so that the inner magnet reciprocates along the main shaft, thereby driving the outer magnet and the cleaning device to reciprocate along the main shaft.

[0014] Preferably, triggering devices are provided at both ends of the main shaft to detect when the cleaning equipment reaches both ends of the main shaft and control the movement direction of the inner magnet. The triggering device includes a probe, a sensor and a return spring. The probe is slidable along the main shaft direction, with one end in contact with the inner magnet and the other end cooperating with the sensor.

[0015] Preferably, the outer magnet is a ring-shaped permanent magnet or a ring-shaped electromagnet, arranged around the inner magnet.

[0016] Preferably, the main shaft is located in the upper half of the mixing tank and is biased towards the side where the mixing tank descends.

[0017] Preferably, the cleaning nozzle is fixedly installed on the cleaning equipment, with the spray direction facing the upper half of the mixing tank. The cleaning equipment reciprocates along the main shaft in conjunction with the rotation of the mixing tank to achieve comprehensive cleaning of the inner wall of the mixing tank.

[0018] The mixing tank cleaning device of the present invention has the following effects: The main shaft is parallel to the mixing tank and is driven to rotate around its axis by a rotary driver. This prevents material from accumulating on the main shaft during normal production, ensuring smooth movement of the cleaning equipment along the shaft. Since the cleaning equipment is driven by the magnetic force of internal and external magnets, and the displacement driver is completely enclosed inside the main shaft and not exposed inside the mixing tank, it effectively avoids the impact of lubricating oil or other contaminants on the food-grade environment. Simultaneously, the cleaning equipment is slidably mounted outside the main shaft and uses a clearance fit for liquid lubrication with cleaning fluid, achieving low-friction movement and further ensuring hygiene requirements.

[0019] The liquid supply pipeline is connected end-to-end through multiple sections of rigid pipe with rotatable connectors. This ensures that the cleaning nozzle direction remains fixed while the main shaft rotates, guaranteeing that the sprayed cleaning fluid covers the upper inner wall of the mixing tank. Combined with the rotation of the mixing tank, this achieves a comprehensive and uniform cleaning effect. The backpack case and valve design allow for safe storage of the cleaning equipment and liquid supply pipeline when not in use. After cleaning, the case can be retracted and the valve closed, providing both operational convenience and environmental isolation. Triggering devices are located at both ends of the main shaft. Using probes, magnetic rings, and sensors, the system automatically detects when the cleaning equipment reaches its endpoint and controls the direction of the internal magnet's movement, enabling the cleaning equipment to automatically reciprocate along the main shaft without manual intervention, thus improving the continuity and efficiency of the cleaning operation.

[0020] By combining the synergistic effects of spindle rotation, internal and external magnet drive, liquid supply pipeline and triggering device, the cleaning device of the present invention can adapt to mixing tanks of various sizes, including long mixing tanks and mixing tanks with protruding side nails on the inner wall, to achieve efficient, comprehensive and food-grade cleaning of the inner wall of the mixing tank, and solve the problems of high labor intensity, poor safety and incomplete coverage of manual cleaning and high risk of contamination of automated equipment in the prior art.

[0021] In summary, the mixing tank cleaning device described in the independent claims of this invention achieves a safe, hygienic, efficient, and highly adaptable fully automated cleaning solution through reasonable structural design and motion logic, and has significant technical advantages.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the mixing tank of the present invention with the cleaning equipment installed; Figure 2 yes Figure 1 Schematic diagram of the internal structure of the mixing tank (the cleaning equipment is located inside the backpack at this time); Figure 3 This is a top view of the cleaning equipment section (the spindle length has been shortened for ease of display; the actual spindle length will be longer). Figure 4 yes Figure 3 Side view of the internal structure of the cleaning equipment; Figure 5 yes Figure 4 The enlarged view at point A shows the relationship between the inner and outer magnets.

[0024] Explanation of reference numerals in the attached figures 1-Spindle; 2- Rotary drive; 3-Internal magnet; 4-Displacement actuator, 4a-Sprocket system, 4b-Servo motor; 5- Cleaning equipment, 5a- Support, 5b- External magnet, 5c- Nozzle, 5d- Liquid supply line; 6-Backpack / Suitcase; 7-Vault door; 8-Triggering device; 9-Mixing bucket. Detailed Implementation

[0025] The following provides a detailed description of specific embodiments of the present invention. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0026] In this invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the orientation in the assembled and used state. "Inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself.

[0027] Mixing tank 9 cleaning device The mixing tank 9 cleaning device provided in this invention mainly includes a main shaft 1, an inner magnet 3, a displacement driver 4, a cleaning device 5, a liquid supply pipeline 5d, a backpack box 6, a valve 7, and a triggering device 8.

[0028] The main shaft 1 is arranged parallel to the inside of the mixing tank 9, with both ends rotatably mounted on the end caps of the mixing tank 9. One end is connected to a rotary driver 2 to drive the main shaft 1 to rotate around its axis. The rotation of the main shaft 1 prevents material from accumulating on it during the mixing tank 9's production process, while also providing stable support for the sliding of the cleaning equipment 5 along the main shaft 1. The main shaft 1 is located in the upper half of the mixing tank 9 and is offset towards the lower side of the outlet to avoid areas where materials are concentrated and the movement trajectory of the side nails, ensuring the safe movement of the cleaning equipment 5.

[0029] The inner magnet 3 is installed inside the hollow interior of the main shaft 1 and reciprocates along the main shaft 1 via a displacement actuator 4. The displacement actuator 4 includes a sprocket system 4a and a servo motor 4b. The drive wheel and guide wheel of the sprocket system 4a are respectively located at both ends of the main shaft 1, and the chain is connected to the inner magnet 3 via a fixing component. The servo motor 4b can drive the inner magnet 3 to reciprocate along the main shaft 1 by rotating in both directions, thereby driving the outer magnet 5b and the cleaning device 5 to move synchronously.

[0030] The cleaning device 5 is slidably mounted on the outer surface of the main shaft 1, and includes a bracket 5a, an outer magnet 5b, a cleaning nozzle 5c, and a liquid supply line 5d. A gap is left between the bracket 5a and the main shaft 1 to allow cleaning fluid to flow in for liquid lubrication, thereby avoiding lubricant contamination. The outer magnet 5b is arranged around the inner magnet 3 and can be a ring-shaped permanent magnet or a ring-shaped electromagnet, used to receive the magnetic force of the inner magnet 3 and drive the cleaning device 5 to reciprocate along the main shaft 1.

[0031] The liquid supply pipeline 5d consists of multiple sections of rigid pipe connected end-to-end via rotatable connectors. The rotation axis of each connector is perpendicular to the main shaft 1, allowing the pipeline to move along the main shaft 1 when folded or unfolded. This ensures that the cleaning nozzle 5c maintains a fixed orientation during the rotation of the main shaft 1, achieving cleaning of the upper inner wall. The liquid supply pipeline 5d is stored in the backpack 6 when not in a cleaning state and gradually unfolds along the main shaft 1 during cleaning operations.

[0032] The backpack box 6 is located on one end cap of the mixing tank 9, with one end of the main shaft 1 extending into the backpack box 6 to house the displacement actuator 4, cleaning equipment 5, and liquid supply pipeline 5d, ensuring safe storage when not in operation. A valve 7 is provided on the mixing tank 9, which opens during cleaning operations to allow the cleaning equipment 5 to enter the mixing tank 9 along the main shaft 1. After cleaning, the equipment is retracted into the backpack box 6 and the valve 7 is closed.

[0033] The triggering device 8 is located at both ends of the main shaft 1 and is used to detect when the cleaning device 5 reaches the end of the main shaft 1 and control the inner magnet 3 to move in the opposite direction. The triggering device 8 includes a probe that can slide along the direction of the main shaft 1, a magnetic ring with one end in contact with the inner magnet 3 and the other end cooperating with a sensor, and a return spring. The probe can move under the push of the inner magnet 3 and trigger the sensor signal. The return spring is used to reset the probe, thereby realizing the automatic reciprocating motion of the cleaning device 5 along the main shaft 1.

[0034] Through the coordinated design of the above-mentioned parts, the overall structure of this embodiment can ensure the safety, stability and full coverage of the cleaning equipment 5 moving along the main axis 1, while meeting the food-grade cleaning requirements of the mixing tank 9, and facilitating operation and storage.

[0035] Spindle Part 1 The spindle 1 described in this embodiment is made of stainless steel to meet food-grade standards and hygiene requirements for tobacco production. The surface of the spindle 1 is polished to maintain a smooth surface, reducing material adhesion and friction, while ensuring smooth flow of cleaning fluid and stability of the cleaning equipment 5 when sliding on it.

[0036] The main shaft 1 is arranged parallel to the inside of the mixing tank 9, and its two ends are rotatably mounted on the end caps of the mixing tank 9. The end caps are fixed to the body of the mixing tank 9 and do not rotate with the mixing tank 9. The rotation function of the main shaft 1 is used to prevent material from accumulating on the main shaft 1 during the mixing process and to provide stable support for the sliding of the cleaning device 5 along the main shaft 1. A rotating seat is provided on the end cap frame of the mixing tank 9, and the end of the main shaft 1 is mounted on the rotating seat through bearings.

[0037] One end of the main shaft 1 is connected to a rotary driver 2, which drives the main shaft 1 to rotate around its axis. The rotary driver 2 is mounted on the body of the mixing tank 9, and its output end is connected to one end of the main shaft 1. The rotary driver 2 may include a motor and a reduction gear transmission device. For example, a gear or pulley structure may be provided at one end of the main shaft 1, and then the transmission mechanism cooperates with the gear or pulley to drive the main shaft 1 to rotate.

[0038] Inside the mixing tank 9, the main shaft 1 is positioned in the upper section, biased towards the lower side of the mixing tank 9 outlet, avoiding the material concentration area and the movement trajectory of the side pins. This arrangement ensures the safety of the main shaft 1 and also ensures that the cleaning equipment 5 will not interfere with the material movement or cause collisions when moving along the main shaft 1.

[0039] Internal magnet 3 and displacement actuator 4 In this embodiment, the inner magnet 3 is installed inside the hollow main shaft 1 and is used to drive the cleaning device 5 outside the main shaft 1 to reciprocate along the direction of the main shaft 1 via magnetic force. The inner magnet 3 is arranged opposite to the outer magnet 5b outside the main shaft 1. When the inner magnet 3 moves along the axial direction of the main shaft 1, its magnetic force can be transmitted to the outer magnet 5b, causing the outer magnet 5b to drive the cleaning device 5 to move along the main shaft 1, thereby realizing the cleaning operation on the inner wall of the mixing tank 9. The movement of the inner magnet 3 is completely enclosed inside the main shaft 1, isolating all moving transmission parts from the materials and cleaning liquid inside the mixing tank 9, thereby avoiding the contamination problems that may be caused by traditional mechanical transmission mechanisms and ensuring a food-grade clean environment.

[0040] The inner magnet 3 can be made of high-strength permanent magnet or ring electromagnet, and is installed around the inner cavity of the main shaft 1 to enhance the efficiency of magnetic force transmission. To ensure smooth movement, the inner magnet 3 can be equipped with a guide slider or rolling bearing to guide the movement along the inner wall of the main shaft 1, while reducing friction and improving the stability of reciprocating motion. Depending on the length of the mixing tank 9 and the cleaning range, the inner magnet 3 can be made of standard permanent magnet modules with a diameter of 20 to 50 mm and a length of 100 to 300 mm. The permanent magnet modules are installed on the fixing bracket 5a to form the inner magnet 3. Alternatively, multiple ring permanent magnets can be connected in series to form the inner magnet 3 to adapt to different mixing tank 9 sizes and cleaning requirements.

[0041] The movement of the inner magnet 3 is controlled by a displacement actuator 4. The displacement actuator 4 includes a servo motor 4b, a transmission system, a drive wheel and a guide wheel, a chain, and a fixing component connecting the inner magnet 3. The transmission system includes a planar magnetic coupling, a reducer, and a universal joint. The servo motor 4b is connected to the drive wheel via the transmission system. The drive wheel is located at one end of the main shaft 1, and the guide wheel is located at the other end of the main shaft 1. The chain is connected to the inner magnet 3 via the fixing component to form a closed-loop structure. When the servo motor 4b rotates forward or reverse, the sprocket system 4a drives the chain, causing the inner magnet 3 to reciprocate along the main shaft 1. The guide wheel's function is to maintain smooth chain operation and prevent chain jumping or slack, thereby ensuring the accuracy and repeatability of the inner magnet 3's movement.

[0042] The servo motor 4b and transmission system of the displacement driver 4 are located at the end of the spindle 1 away from the rotary driver 2. The guide wheel is located at the rotary driver 2 end of the spindle 1 to guide the chain and ensure chain tension, preventing slippage or slack, while the drive wheel is located at the displacement driver 4 end. This arrangement ensures that the structure at the rotating end of the spindle 1 is relatively simple, the rotary driver 2 and the drive structure at the end of the spindle 1 do not interfere with each other, and the displacement driver 4 at the other end can provide enough space to install the complete sprocket system 4a and servo motor 4b.

[0043] Cleaning equipment 5 and liquid supply pipeline 5d The cleaning device 5 described in this embodiment is slidably mounted on the outer surface of the main shaft 1, and is used to move along the main shaft 1 to clean the inner wall of the mixing tank 9. The cleaning device 5 includes a bracket 5a, an outer magnet 5b, a nozzle 5c, and a liquid supply pipeline 5d. The bracket 5a and the main shaft 1 are fitted with a clearance fit. During the cleaning operation, the cleaning fluid flows into the space between the bracket 5a and the main shaft 1, as well as between the outer magnet 5b and the main shaft 1, forming liquid lubrication. This allows the cleaning device 5 to slide smoothly along the main shaft 1 without the need for lubricating oil, thus avoiding contamination of the materials inside the mixing tank 9. The bracket 5a is designed as a rigid structure, capable of bearing the weight of the outer magnet 5b and the nozzle 5c, while ensuring stability during reciprocating motion along the main shaft 1.

[0044] The outer magnet 5b is fixedly mounted on the bracket 5a and is positioned opposite the inner magnet 3. The cleaning device 5 is driven to reciprocate along the main shaft 1 by the magnetic force transmitted through the inner magnet 3 within the main shaft 1. The outer magnet 5b is preferably configured as a ring structure, which can be a single ring permanent magnet, multiple ring permanent magnets connected in series, or a ring electromagnet. The ring arrangement ensures that the magnetic force is evenly applied to the bracket 5a, allowing the cleaning device 5 to move smoothly and reducing sway, thereby improving cleaning accuracy.

[0045] The nozzle 5c is fixedly mounted on the bracket 5a, with the spray direction facing the upper half of the mixing tank 9. It can be slightly tilted to cover the entire upper half of the inner wall of the mixing tank 9. The nozzle 5c is connected to the cleaning fluid source through the liquid supply line 5d to ensure that the spray flow rate and pressure meet the cleaning requirements. During the cleaning operation, the direction of the nozzle 5c remains fixed and does not shift with the rotation of the main shaft 1, thereby ensuring that the sprayed cleaning fluid evenly covers the inner wall.

[0046] The liquid supply pipeline 5d employs a folding structure composed of multiple sections of rigid pipe joined end-to-end. Each pipe section is connected by a rotatable connector, the axis of rotation of which is perpendicular to the main shaft 1. When folded, the pipeline can be stored in a backpack 6; when unfolded, it extends linearly along the main shaft 1, ensuring the nozzle 5c maintains a fixed orientation during the rotation of the main shaft 1. The folding structure is similar to a scissor mechanism: the top of the first pipe section is rotatably connected to the liquid supply source, and the bottom of the second pipe section is connected to the first pipe section via a rotatable connector. The simultaneous movement of the two pipe sections unfolds or folds along the main shaft 1. This structure repeats, with multiple pipe sections forming the complete liquid supply pipeline 5d, ensuring that the nozzle 5c does not rotate or shift during the rotation of the main shaft 1 and the reciprocating motion of the cleaning equipment 5.

[0047] The last section of the liquid supply line 5d is connected to the nozzle 5c on the bracket 5a via a swivel joint, fixing the nozzle 5c in a stable position. This design not only ensures that the entire cleaning device 5 does not rotate with the main shaft 1, but also allows for continuous liquid supply as the cleaning device 5 moves.

[0048] Through the above design, the cleaning equipment 5 and the liquid supply pipeline 5d module can: ensure that the cleaning equipment 5 slides smoothly along the main shaft 1 and the nozzle 5c is fixed in the direction; use the magnetic force transmission of the inner magnet 3 to drive, without the power components being exposed inside the mixing tank 9, ensuring food-grade cleanliness; the liquid supply pipeline 5d can flexibly switch between storage and expansion to adapt to cleaning operations of mixing tanks 9 of different lengths. Backpack Case (6 Parts) In this embodiment, the backpack case 6 is located on one end cap of the mixing tank 9 and is used to store the cleaning equipment 5, the liquid supply pipeline 5d, and the displacement actuator 4. This ensures that these components can be safely stored during non-cleaning operations and is isolated from the internal environment of the mixing tank 9, thereby meeting food-grade cleanliness requirements. The internal space of the backpack case 6 is connected to the inside of the mixing tank 9 through a valve 7. The valve 7 is opened when the cleaning operation begins, allowing the cleaning equipment 5 to enter the mixing tank 9 along the main shaft 1. After cleaning is completed, the backpack case 6 is retracted and the valve 7 is closed for safe storage.

[0049] The layout of the backpack case 6 takes into account its compatibility with the main shaft 1, the liquid supply line 5d, and the displacement actuator 4. One end of the main shaft 1 extends into the backpack case 6. The liquid supply line 5d and the cleaning device 5 are stored inside the backpack case 6 when not in use, with the lines folded. The bracket 5a and the external magnet 5b are also tightly arranged inside the backpack case 6 to save space and protect the components from damage. The backpack case 6 also has a reserved mounting position for the displacement actuator 4, allowing it to directly drive the internal magnet 3 to reciprocate along the main shaft 1, while avoiding interference with the rotation actuator 2 of the main shaft 1.

[0050] The backpack box 6 is equipped with an opening and a through hole to allow the main shaft 1 to pass through, ensuring that the rotation function of the main shaft 1 is not affected. At the same time, it ensures that the cleaning equipment 5 can smoothly enter the mixing tank 9 from the backpack box 6 when the cleaning operation is started. The backpack box 6 is fixed to the mixing tank 9 body by bolts or welding, ensuring that it is stable and does not shift during the operation of the mixing tank 9 or the cleaning operation. A drain pipe is provided at the bottom of the backpack box 6 to drain the accumulated liquid.

[0051] Triggering device 8 The triggering device 8 described in this embodiment is located at both ends of the main shaft 1. It is used to detect the endpoint position of the cleaning equipment 5 reciprocating along the main shaft 1 and control the movement direction of the inner magnet 3, thereby realizing the automatic reciprocating operation of the cleaning equipment 5. The triggering device 8 completes its function through indirect detection of the position of the inner magnet 3, thus eliminating the need to expose complex mechanical parts inside the mixing tank 9 and effectively ensuring food-grade cleanliness.

[0052] The triggering device 8 includes a probe rod that slides along the extension direction of the main shaft 1, a magnetic ring that cooperates with the probe rod, a sensor, and a return spring. One end of the probe rod points towards the inner magnet 3. When the inner magnet 3 moves to the end of the main shaft 1, it pushes the probe rod to slide along the direction of the main shaft 1. The other end of the probe rod is equipped with a magnetic ring. The sensor determines whether the inner magnet 3 has reached the end position by detecting the position of the magnetic ring. The return spring is installed on the probe rod. When the inner magnet 3 leaves the probe rod, the return spring returns the probe rod to its initial position, ensuring that the triggering device 8 works normally in the next movement.

[0053] The probe and magnetic ring can be located inside the main shaft 1 or inside the end cover, isolating the triggering device 8 from the materials and cleaning fluid inside the mixing tank 9 to prevent contamination or wear. The triggering device 8 is connected to the control system of the displacement driver 4. When the sensor detects that the magnetic ring has reached the end signal, the system controls the displacement driver 4 to reverse the movement direction of the inner magnet 3, thereby driving the cleaning equipment 5 to move in the opposite direction along the main shaft 1 to achieve automatic reciprocating cycle.

[0054] Work process In this embodiment, the cleaning operation of the mixing tank 9 is carried out after the normal production operation of the mixing tank 9 is completed, and the two are separated in time. The cleaning operation is completed in concert by the main shaft 1, the inner magnet 3, the cleaning equipment 5, the liquid supply pipeline 5d, the backpack box 6, and the triggering device 8, to ensure that the inner wall of the mixing tank 9 is thoroughly, uniformly, and food-grade clean.

[0055] Before the cleaning operation begins, the cleaning equipment 5 and the liquid supply pipeline 5d stored in the backpack 6 are folded, the valve 7 is closed, and the main shaft 1 rotates to prevent the accumulation of mixed residue on the main shaft 1. When the cleaning operation starts, first open the valve 7 of the mixing tank 9 to allow the cleaning equipment 5 to enter the mixing tank 9 along the main shaft 1. The liquid supply pipeline 5d unfolds gradually along with the cleaning equipment 5 to ensure that the nozzle 5c remains oriented during the rotation of the main shaft 1.

[0056] Subsequently, the displacement driver 4 is activated, and the servo motor 4b drives the sprocket system 4a to move, causing the inner magnet 3 to reciprocate axially inside the main shaft 1. The inner magnet 3 magnetically pulls the outer magnet 5b, causing the cleaning device 5 to reciprocate along the main shaft 1. At the same time, the cleaning nozzle 5c sprays cleaning fluid, with the spray direction directed towards the upper half of the mixing tank 9, and can be slightly tilted to ensure complete coverage of the inner wall of the mixing tank 9.

[0057] When the cleaning device 5 moves to the end position along the main shaft 1, the probe of the trigger device 8 moves due to the inner magnet 3. After the sensor detects the displacement signal of the magnetic ring, it controls the displacement driver 4 to reverse the movement direction of the inner magnet 3, causing the cleaning device 5 to move in the opposite direction along the main shaft 1, thus achieving continuous reciprocating cleaning. The entire process is completed with the cooperation of the rotation of the main shaft 1, which effectively covers the material accumulation area and ensures uniform distribution of the cleaning liquid, resulting in high cleaning efficiency.

[0058] After the cleaning operation is completed, the cleaning equipment 5 returns to the backpack box 6 along the main shaft 1, the liquid supply pipeline 5d is retracted, the valve 7 is closed, and the entire cleaning process ends. Through this working logic, the inner wall of the mixing tank 9 can be safely, efficiently, and food-gradely cleaned after each production operation without the need for manual entry into the mixing tank 9, thus significantly reducing labor intensity and safety risks.

[0059] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0060] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0061] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A mixing tank cleaning device, characterized in that, include: The main shaft (1) is set inside the mixing tank (9) and parallel to the axis of the mixing tank (9); both ends of the main shaft (1) are rotatably mounted on the end caps of the mixing tank (9); Rotate the drive (2), connect it to one end of the spindle (1) and drive the spindle (1) to rotate around the axis; An inner magnet (3) is installed inside the hollow spindle (1); The displacement actuator (4) drives the inner magnet (3) to move within the main shaft (1); The cleaning device (5) is slidably mounted on the outer surface of the main shaft (1), including a bracket (5a), an outer magnet (5b), a cleaning nozzle (5c) and a liquid supply line (5d). The outer magnet (5b) is arranged opposite to the inner magnet (3) to drive the cleaning device (5) to reciprocate along the main shaft (1) with magnetic force. The liquid supply pipeline (5d) is a folded structure composed of multiple rigid pipes connected end to end. The pipes are connected by a rotatable connector. The rotation axis of the connector is perpendicular to the direction of the main shaft (1), so that the cleaning nozzle (5c) maintains a fixed direction when the main shaft (1) rotates.

2. The mixing tank cleaning device according to claim 1, characterized in that, The bracket (5a) is slidably mounted on the spindle (1) and is clearance-fitted with the spindle (1) to allow cleaning fluid to enter between the bracket (5a) and the spindle (1) for lubrication.

3. The mixing tank cleaning device according to claim 1, characterized in that, The liquid supply pipeline (5d) consists of at least two pipe sections connected by a rotating joint, so that the pipeline can be stored in a folded state and unfolded along the main axis (1) during the cleaning operation.

4. The mixing tank cleaning device according to claim 1, characterized in that, A backpack box (6) is provided on one end cap of the mixing bucket (9), and one end of the main shaft (1) extends into the backpack box (6). The displacement driver (4) and the cleaning equipment (5) are stored in the backpack box (6) when not cleaning.

5. The mixing tank cleaning device according to claim 4, characterized in that, A valve (7) is provided on the mixing tank (9) for opening during the cleaning operation, allowing the cleaning equipment (5) to enter the mixing tank (9) along the main shaft (1), and after cleaning, it is returned to the backpack box (6) and the valve (7) is closed.

6. The mixing tank cleaning device according to claim 1, characterized in that, The displacement driver (4) includes a sprocket system (4a) and a servo motor (4b). The drive wheel and guide wheel of the sprocket system (4a) are respectively set at both ends of the main shaft (1), and the chain is fixedly connected to the inner magnet (3). The servo motor (4b) drives the sprocket system (4a) to rotate forward or backward, so that the inner magnet (3) moves back and forth along the main shaft (1), thereby driving the outer magnet (5b) and the cleaning device (5) to move back and forth along the main shaft (1).

7. The mixing tank cleaning device according to claim 1, characterized in that, Triggering devices (8) are provided at both ends of the main shaft (1) to detect when the cleaning equipment (5) reaches both ends of the main shaft (1) and to control the movement direction of the inner magnet (3). The triggering device (8) includes a probe, a sensor and a reset spring. The probe can slide along the direction of the main shaft (1), with one end in contact with the inner magnet (3) and the other end cooperating with the sensor.

8. The mixing tank cleaning device according to claim 1, characterized in that, The outer magnet (5b) is a ring-shaped permanent magnet or a ring-shaped electromagnet, which is arranged around the inner magnet (3).

9. The mixing tank cleaning device according to claim 1, characterized in that, The main shaft (1) is located in the upper half of the mixing tank (9) and is biased towards the downward side of the mixing tank (9).

10. The mixing tank cleaning device according to claim 1, characterized in that, The cleaning nozzle (5c) is fixedly installed on the cleaning equipment (5), and the spray direction is towards the upper half of the mixing tank (9). The cleaning equipment (5) reciprocates along the main shaft (1) in conjunction with the rotation of the mixing tank (9) to achieve comprehensive cleaning of the inner wall of the mixing tank (9).

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