A cleaning device of a can body

Abstract

This application discloses an external tank cleaning device, belonging to the technical field of automated cleaning equipment. The device includes a fixed frame, a drive arm, and a cleaning assembly. The drive arm includes a main drive arm, a swing arm, and a swing drive assembly that drives its swing. The cleaning assembly includes a first rotating nozzle and a second rotating nozzle connected to the end of the swing arm with their rotation axes angled. The first nozzle has a spray nozzle one, and the second nozzle has a spray nozzle two on its rotating end face and a spray nozzle three in the radial direction. Through the swing of the swing arm and the combined rotational motion of the two nozzles, high-pressure water jets can cover the inner wall of the tank and complex surfaces such as the stirring shaft, achieving thorough cleaning without dead angles. This invention achieves automation and inherent safety in tank cleaning under high-risk environments, with high cleaning efficiency and completely eliminating the risk of manual entry.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to a tank externally connected cleaning device. Background Technology

[0002] In industries such as chemical, pharmaceutical, and food processing, the internal cleaning of pressure vessels such as stirred tanks and reaction vessels is a crucial step in ensuring production safety and product quality. Currently, the industry commonly uses manual, handheld cleaning methods. Operators must enter the container through narrow manholes and directly use simple tools such as brushes, scrapers, or handheld high-pressure water guns for close-contact scraping and rinsing. This traditional method has several technical drawbacks: In high-risk environments involving energetic materials or flammable and explosive substances, friction or impact between tools and the container's metal walls can easily generate static sparks, leading to combustion or explosion accidents, seriously threatening the lives of operators; simultaneously, the complex internal structure of the container, including curved inner walls, stirring shafts, and impellers, makes it difficult for manual cleaning to cover hidden areas such as the back of the impellers and shaft connections, creating cleaning blind spots that lead to residue accumulation, affecting the purity of subsequent products and the lifespan of equipment; furthermore, the cleaning process is highly dependent on the physical strength and subjective experience of the operators, resulting in extremely high labor intensity and low cleaning efficiency. This cannot meet the requirements of modern continuous and large-scale production for consistent and timely cleaning, leading to prolonged production downtime and resource waste. Summary of the Invention

[0003] The purpose of this application is to provide an external tank cleaning device that has the advantages of solving the safety risks, blind spots and low efficiency problems of traditional manual cleaning. Through automated design, it avoids operators from entering the container and improves cleaning coverage and operational safety.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an external tank cleaning device, comprising a fixed frame, a driving arm connected to the fixed frame, and a cleaning assembly. The driving arm includes a main driving arm, a swing arm pivotally connected to the main driving arm, and a swing driving assembly. The swing driving assembly is used to drive the swing arm to rotate relative to the main driving arm around its pivot point. The cleaning assembly includes a first rotating nozzle and a second rotating nozzle connected to the end of the swing arm. The first rotating nozzle has a first spray nozzle, and the second rotating nozzle has a second spray nozzle and a third spray nozzle. The central axes of rotation of the first rotating nozzle and the second rotating nozzle are set at an angle. The second spray nozzle is located on the rotating end face of the second rotating nozzle, and the third spray nozzle is located in the radial direction of the second rotating nozzle.

[0005] By adopting the above technical solution, the external tank cleaning device, through its unique drive arm and cleaning component design, achieves non-contact, multi-angle, and multi-directional cleaning of the interior of pressure vessels such as mixing vessels. This device can effectively avoid the safety risks caused by manual entry into high-risk environments. At the same time, through the synergistic effect of the first and second rotating nozzles and their spray nozzles, it can cover complex areas and blind spots that are difficult to reach by traditional manual cleaning, significantly improving the thoroughness and uniformity of cleaning. In addition, mechanized operation replaces heavy manual labor, improves cleaning efficiency, and meets the cleaning needs of continuous and large-scale production.

[0006] The present invention is further configured such that: the second rotating nozzle is rotatably connected to the first rotating nozzle, and the first rotating nozzle rotates to drive the second rotating nozzle to rotate.

[0007] By adopting the above technical solution, the second rotary nozzle is rotatably connected to the first rotary nozzle, and driven by the first rotary nozzle to rotate, effectively solving the structural complexity and control difficulty problems caused by independent drive. Since the second rotary nozzle does not require an independent drive mechanism, the structure of the entire cleaning device is simplified, reducing manufacturing costs and maintenance difficulty. More importantly, the linkage rotation between the first and second rotary nozzles allows the two nozzles to work together, forming a more complex and dynamic spray trajectory. In particular, when the first rotary nozzle drives the second rotary nozzle to rotate at an angle to its own axis of rotation, the spray fan or jet formed by spray nozzles two and three on the second rotary nozzle will sweep across a larger spatial range as the first rotary nozzle rotates as a whole. This composite rotational motion greatly enhances the uniformity and thoroughness of the cleaning coverage, effectively removing stubborn dirt from the inner wall of the tank. It can also achieve efficient cleaning, especially for complex structures or hard-to-reach areas inside the tank, thus significantly improving the cleaning effect.

[0008] The present invention is further configured such that: the swing drive assembly includes a reciprocating driver, a drive rod controlled by the reciprocating driver, and a drive member fixedly connected to the swing arm; the drive member is pivotally connected to one end of the drive rod; when the driver drives the drive rod to move in a linear reciprocating motion, the drive member drives the swing arm to rotate around its pivot point with the main drive arm.

[0009] By adopting the above technical solution, the swing drive assembly uses a linkage structure of a reciprocating driver, a drive rod, and a drive component, efficiently converting the linear reciprocating motion of the reciprocating driver into the precise swing of the swing arm. This design avoids the problems of complex structure and low control precision that may exist in traditional rotary drive methods, enabling effective control of the swing angle and speed of the swing arm, thereby ensuring that the cleaning assembly can stably and accurately cover the cleaning area inside the tank. In addition, the mechanism is compact and easy to integrate, improving the overall reliability and cleaning efficiency of the device.

[0010] The invention is further configured such that: the cleaning component also includes a water supply pipe, the water supply pipe includes a first water supply pipe, a second water supply pipe, and a third water supply pipe, the second water supply pipe is a flexible hose, and a double-ended pipe connector is connected to each end of the water supply pipe, the two ends of the second water supply pipe are respectively connected to the first water supply pipe and the third water supply pipe through the double-ended pipe connectors, the two double-ended pipe connectors are respectively fixedly connected to the main drive arm and the swing arm, and the third water supply pipe is used to supply water to the first rotating nozzle and the second rotating nozzle.

[0011] By adopting the above technical solution, the water supply pipeline of the cleaning component is designed with a segmented structure. The second water supply pipe is connected to the first and third water supply pipes by a flexible hose, and is fixedly connected to the main drive arm and the swing arm respectively by a double-connector. This design allows the water supply pipeline to adapt to the rotation of the swing arm relative to the main drive arm. The flexibility of the hose effectively absorbs the deformation caused by the swing, thereby avoiding the problems of entanglement, breakage or leakage that may occur at the connection of moving parts in traditional rigid pipelines. This ensures that the cleaning component can continuously and stably obtain the cleaning fluid supply during the swing process, improves the reliability and service life of the device, and simplifies the pipeline layout and reduces maintenance costs.

[0012] The present invention is further configured such that the rotation center axis of the first rotating nozzle is axially aligned with the length direction of the swing arm.

[0013] By adopting the above technical solution, the rotation center axis of the first rotary nozzle is aligned with the axial direction of the swing arm, enabling the first rotary nozzle to obtain more stable mechanical support during the swing arm's movement and effectively suppressing any possible shaking or deviation of the nozzle. This precise axial alignment ensures that the spray direction of the first spray nozzle is always consistent with the extension direction of the swing arm, thereby forming a more stable and uniform cleaning trajectory and coverage area when the swing arm performs swing cleaning, significantly improving the cleaning stability and overall cleaning efficiency.

[0014] The present invention is further configured such that: the first spray nozzle is disposed on the rotating end face of the first rotating nozzle, and the spraying direction of the first spray nozzle is parallel to the rotation center axis direction of the first rotating nozzle.

[0015] By adopting the above technical solution, the spray nozzle is positioned on the rotating end face of the first rotating nozzle, and its spray direction is parallel to the rotational axis of the first rotating nozzle. This allows the cleaning fluid to be sprayed directly and concentratedly onto the area to be cleaned inside the tank along the rotational axis of the first rotating nozzle. This configuration ensures that the first rotating nozzle can form an efficient and uniform cleaning coverage on the area directly in front of it when rotating, effectively avoiding cleaning blind spots and improving cleaning efficiency and thoroughness. Especially for the surfaces inside the tank perpendicular to the nozzle axis, this solution can provide a powerful impact cleaning effect.

[0016] The present invention is further configured such that the central axes of rotation of the second rotating nozzle and the first rotating nozzle are perpendicular to each other.

[0017] By adopting the above technical solution, the central axes of rotation of the second and first rotating nozzles are set perpendicular, allowing the two nozzles to form complementary cleaning coverage areas during operation. The first rotating nozzle is primarily responsible for cleaning the horizontal or inclined surfaces inside the tank, while the second rotating nozzle, with its axis of rotation perpendicular to the first, can effectively clean the vertical walls, corners, and other complex structures inside the tank through its spray nozzles two and three. This vertical axis design, combined with the mechanism of the first rotating nozzle driving the second rotating nozzle, ensures that the second rotating nozzle rotates simultaneously with the first, creating a three-dimensional, blind-spot-free cleaning trajectory. This significantly improves the thoroughness and efficiency of cleaning, effectively solving the problem of blind spots that may exist in traditional cleaning devices.

[0018] The present invention is further configured such that the second spray nozzle and the rotation center axis of the second rotating nozzle are offset by a distance.

[0019] By adopting the above technical solution, the second spray nozzle and the rotation axis of the second rotating nozzle are offset by a distance, so that when the second rotating nozzle rotates, the spray fluid from the second spray nozzle can be sprayed in a manner deviating from the rotation axis. This effectively expands the spray coverage area of ​​the second spray nozzle and avoids the cleaning blind spots or uneven cleaning problems that may occur when the spray direction coincides with the rotation axis. Especially when cleaning the end face of the tank, this offset design ensures that the spray fluid covers a wider area, thereby achieving a more thorough and uniform cleaning effect on the end face of the tank, significantly improving cleaning efficiency and quality.

[0020] The present invention is further configured such that: the second rotating nozzle has at least two or more spray nozzles arranged in a radially uniform array.

[0021] By adopting the above technical solution, when the second rotary nozzle rotates, multiple uniformly arrayed spray nozzles can spray cleaning fluid radially into the tank interior in a uniform and continuous manner. This uniform array configuration, combined with the rotational motion of the second rotary nozzle, allows the cleaning fluid to form a continuous, seamless fan-shaped or annular cleaning area, effectively avoiding blind spots caused by insufficient or unevenly distributed spray nozzles. The cleaning fluid can more comprehensively and thoroughly cover the sidewalls of the tank interior, significantly improving the uniformity and efficiency of cleaning and ensuring the cleanliness of the tank interior.

[0022] The invention is further configured such that: the fixed frame is connected to a robotic arm, and the robotic arm is connected to a lifting transport vehicle for driving the robotic arm to rise and fall and move in the height direction.

[0023] By adopting the above technical solution, the fixed frame of the external cleaning device for the tank is connected to the robotic arm, and the robotic arm is further mounted on a lifting transport vehicle, giving the entire cleaning system a high degree of flexibility and automation. The lifting transport vehicle can move the cleaning device to different tank locations and perform precise vertical lifting and positioning according to the height requirements of the tank. Based on this, the robotic arm, utilizing its multi-joint motion capabilities, can precisely deliver the cleaning components, including the first and second rotating nozzles, to any area outside the tank to be cleaned, achieving thorough cleaning coverage of the tank surface. This configuration significantly overcomes the problems of limited cleaning range, inconvenient positioning, low efficiency, and poor operational safety associated with traditional fixed or manually adjustable cleaning devices when dealing with tanks of various sizes and heights. Through automated movement, lifting, and precise robotic arm positioning, not only is the efficiency and quality of cleaning operations greatly improved, and the intensity and potential risks of manual intervention reduced, but the cleaning device can also adapt to a wider range of application scenarios, achieving intelligent and efficient external cleaning of various types of tanks.

[0024] This invention, employing the above technical solution, achieves significant technical effects: the second rotating nozzle is rotatably connected to the first rotating nozzle, thus the rotation of the first rotating nozzle drives the second rotating nozzle to rotate as well. The central axes of rotation of the second and first rotating nozzles are perpendicular. This perpendicular angle allows the second rotating nozzle to provide spray coverage in a different direction than the first rotating nozzle. The second rotating nozzle has two spray ports: a second spray port and a third spray port. Spray port two is located on the rotating end face of the second rotating nozzle and is offset from the central axis of rotation. This allows spray port two to form a larger cleaning ring during rotation, effectively cleaning the inner wall of the stirred tank. Spray port three is located in the radial direction of the second rotating nozzle, and at least two spray ports three are evenly arrayed radially. These radial spray ports three can laterally scour complex structures such as the stirring shaft and the back of the impeller, further eliminating cleaning blind spots.

[0025] By utilizing the rotation of the swing arm, the rotation of the first rotating nozzle, and the rotation of the second rotating nozzle on different axes, along with the synergistic effect of multi-directional spray nozzles, this cleaning device can achieve comprehensive, thorough cleaning of the interior of the mixing vessel. Compared to traditional manual hand-held cleaning, this device eliminates the need for personnel to enter the container, significantly improving safety. Its automated, multi-angle, and multi-spray mode combination ensures controllable and thorough cleaning results, eliminating blind spots. Furthermore, the continuous and automated operation of the device significantly improves cleaning efficiency, meets the demands of large-scale production, and reduces labor intensity. Attached Figure Description Figure 1 This is a schematic diagram of the external cleaning device for a tank as described in the embodiment; Figure 2 This is a schematic diagram of the cleaning device structure without the robotic arm installed in the embodiment; Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0026] The parts referred to by the numbers in the above attached figures are as follows: 1. Fixed frame; 2. Drive arm; 21. Main drive arm; 22. Swing arm; 23. Swing drive assembly; 231. Reciprocating drive; 232. Drive rod; 233. Drive component; 3. Cleaning assembly; 31. First rotating nozzle; 32. Second rotating nozzle; 33. Spray nozzle one; 34. Spray nozzle two; 35. Spray nozzle three; 36. Water supply pipe one; 37. Water supply pipe two; 38. Water supply pipe three; 39. Double-ended pipe connector; 4. Robotic arm. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0028] Example 1: A tank external cleaning device, reference Figures 1 to 3 The system includes a fixed frame, a drive arm connected to the fixed frame, and a cleaning component. The fixed frame is used to connect to the end of the robotic arm via screw threads. The robotic arm is mounted on a lifting transport vehicle for driving the robotic arm to move vertically. The lifting transport vehicle facilitates the robotic arm to move the cleaning component at different heights, allowing the cleaning component and drive arm to be inserted into different reaction vessels.

[0029] The driving arm includes a main driving arm, a swing arm pivotally connected to the main driving arm, and a swing drive assembly. The main driving arm and the swing arm are pivotally connected by a pivot shaft. However, in this embodiment, both have only one degree of rotational freedom in one direction, and the rest are actively adjusted by the robotic arm. The swing drive assembly is used to drive the swing arm to rotate relative to the main driving arm around its pivot point. The swing drive assembly includes a reciprocating driver, a drive rod controlled by the reciprocating driver, and a drive component fixedly connected to the swing arm. In this embodiment, the reciprocating driver is a linear cylinder or a linear motor, but it is not limited to these two and other linear reciprocating motion drive components can also be used. The moving end of the driver is threadedly connected to one end of the drive rod, and the drive component is pivotally connected to the end of the drive rod away from the driver. When the driver drives the drive rod to move in a linear reciprocating motion, the drive component drives the swing arm to rotate around its pivot point with the main driving arm.

[0030] The cleaning assembly includes a first rotary nozzle, a second rotary nozzle, and a water supply pipe connected to the end of the swing arm away from the drive rod. Both the first and second rotary nozzles are driven by a built-in transmission mechanism through high-pressure water flow to achieve rotation. The second rotary nozzle is rotatably connected to a rotating position on the first rotary nozzle. When the first rotary nozzle is driven to rotate by high-pressure water flow, it synchronously drives the second rotary nozzle to rotate. The first rotary nozzle has a built-in three-way water passage to supply water to the second rotary nozzle. The second rotary nozzle rotates synchronously when it receives high-pressure water flow. The central axes of rotation of the second and first rotary nozzles are perpendicular to each other. The direction of the central axis of rotation of the first rotary nozzle coincides with the axial direction of the length of the swing arm. A spray nozzle is provided on the rotating end face of the first rotary nozzle. First, the spray direction of spray nozzle one is parallel to or coincides with the rotation center axis of the first rotating nozzle. Spray nozzle two is opened on the rotating end face of the second rotating nozzle. Spray nozzle two is offset from the rotation center axis of the second rotating nozzle. At least two or more spray nozzles three are evenly arrayed in the radial direction of the second rotating nozzle. The water supply pipe includes water supply pipe one, water supply pipe two and water supply pipe three. In this embodiment, water supply pipe two is a flexible hose, while water supply pipe one and water supply pipe two are rigid pipes. A double-connector is connected to each end of water supply pipe two. The two ends of water supply pipe two are connected to water supply pipe one and water supply pipe three respectively through the double-connector. The two double-connector is fixedly connected to the main drive arm and the swing arm respectively. Water supply pipe three is used to supply water to the first rotating nozzle and the second rotating nozzle.

Claims

1. A tank external cleaning device, characterized in that, The device includes a fixed frame, a drive arm connected to the fixed frame, and a cleaning assembly. The drive arm includes a main drive arm, a swing arm pivotally connected to the main drive arm, and a swing drive assembly. The swing drive assembly is used to drive the swing arm to rotate relative to the main drive arm about its pivot point. The cleaning assembly includes a first rotating nozzle and a second rotating nozzle connected to the end of the swing arm. The first rotating nozzle has a first spray nozzle, and the second rotating nozzle has a second spray nozzle and a third spray nozzle. The central axes of rotation of the first rotating nozzle and the second rotating nozzle are set at an angle. The second spray nozzle is located on the rotating end face of the second rotating nozzle, and the third spray nozzle is located in the radial direction of the second rotating nozzle.

2. The external tank cleaning device according to claim 1, characterized in that, The second rotary nozzle is rotatably connected to the first rotary nozzle, and the rotation of the first rotary nozzle drives the second rotary nozzle to rotate.

3. The external tank cleaning device according to claim 1, characterized in that, The swing drive assembly includes a reciprocating driver, a drive rod controlled by the reciprocating driver, and a drive component fixedly connected to the swing arm. The drive component is pivotally connected to one end of the drive rod. When the driver drives the drive rod to move in a linear reciprocating motion, the drive component drives the swing arm to rotate around its pivot point with the main drive arm.

4. The external tank cleaning device according to claim 1, characterized in that, The cleaning assembly also includes a water supply pipe, which includes a first water supply pipe, a second water supply pipe, and a third water supply pipe. The second water supply pipe is a flexible hose, and each end of the second water supply pipe is connected to a double-ended pipe connector. The two ends of the second water supply pipe are connected to the first water supply pipe and the third water supply pipe respectively through the double-ended pipe connectors. The two double-ended pipe connectors are fixedly connected to the main drive arm and the swing arm respectively. The third water supply pipe is used to supply water to the first rotating nozzle and the second rotating nozzle.

5. The external tank cleaning device according to claim 1, characterized in that, The rotation center axis of the first rotary nozzle is axially aligned with the length direction of the swing arm.

6. The external tank cleaning device according to claim 5, characterized in that, The first spray nozzle is disposed on the rotating end face of the first rotating nozzle, and the spraying direction of the first spray nozzle is parallel to the rotation center axis of the first rotating nozzle.

7. The external tank cleaning device according to claim 1, characterized in that, The central axes of rotation of the second rotating nozzle and the first rotating nozzle are perpendicular.

8. The external tank cleaning device according to claim 1, characterized in that, The second spray nozzle is offset from the rotation center axis of the second rotating nozzle by a certain distance.

9. The external tank cleaning device according to claim 1, characterized in that, The second rotating nozzle has at least two or more spray nozzles arranged in a radially uniform array.

10. The external tank cleaning device according to claim 1, characterized in that, The fixed frame is connected to a robotic arm, and the robotic arm is connected to a lifting transport vehicle for driving the robotic arm to move up and down in the height direction.

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