Can cleaner and nozzle device

Abstract

The utility model relates to a tank cleaner and nozzle device, the former is used for cleaning tank, its especially track type cleaner, including the static body that is constituted with the supply line of receiving cleaning fluid coupling, the rotating body that rotates around the main rotation axis and is installed on the static body, the nozzle carrier that rotates around the secondary rotation axis different from the main rotation axis, the nozzle carrier has the housing part that is installed to the rotating body and is in fluid intercommunication with the supply line of receiving cleaning fluid, a plurality of nozzle devices and the corresponding number of fixing members that each is constituted to fix corresponding one in the nozzle device to the housing part, wherein each nozzle device has the nozzle insert with the discharge orifice of dispensing cleaning fluid and the flow guide portion that guides cleaning fluid from the housing part to the discharge orifice. The utility model shows that the nozzle insert is at least partially releasably received in the fixing member and / or housing part, wherein the fixing member is constituted to detachably engage with the housing part.

Description

Technical Field

[0001] This invention relates to a tank cleaner for cleaning tanks, particularly a track-mounted cleaner. The tank cleaner includes a static body configured to connect to a supply line for receiving cleaning fluid, and a rotating body mounted on the static body that rotates about a main rotation axis. The tank cleaner also includes a nozzle carrier that rotates about a secondary rotation axis different from the main rotation axis. The nozzle carrier has a housing portion, a plurality of nozzle assemblies, and a corresponding number of fixing members. The housing portion is mounted to the rotating body and is in fluid communication with the supply line for receiving the cleaning fluid. Each nozzle member is configured to fix a corresponding nozzle assembly to the housing portion. Furthermore, each nozzle assembly has a nozzle insert with a discharge orifice for dispensing cleaning fluid and a flow guide portion for guiding the cleaning fluid from the housing portion to the discharge orifice. Background Technology

[0002] In the field of can cleaning, mechanical cleaning devices are typically used to ensure the thorough removal of residues and contaminants from the inner surfaces of cans. These devices are essential in industries such as food and beverage, pharmaceuticals, and chemicals, where maintaining high standards of cleanliness is crucial. Known systems generally involve the use of rotary nozzle devices mounted to a nozzle carrier. These rotary nozzle devices distribute cleaning fluid at relatively high pressures of up to 20 bar to detach and remove unwanted materials. In this respect, the size and configuration of the discharge orifice of the nozzle insert determine the spray performance.

[0003] These systems typically rely on complex mechanical components to ensure fluid reaches all necessary areas within the tank, and they must be robust enough to withstand the harsh conditions often encountered in industrial environments. Furthermore, the materials used in these systems must be carefully selected for corrosion and abrasion resistance, which can be exacerbated by high-pressure fluid flow and the chemical properties of the cleaning agents. This often necessitates the use of expensive materials or coatings on the external components of the tank cleaner, thus driving up the cost of these systems. For example, retaining members and housing portions are typically formed of metallic materials to ensure corrosion and abrasion resistance, thereby ensuring reliable fixation of the nozzle assembly. Such retaining members can be achieved by at least partially receiving the nozzle assembly through a closing member or by a locking device, such as a pin, that secures the nozzle assembly by means of a form-fitting engagement, wherein the nozzle assembly is protected by the housing portion itself.

[0004] To resist high-pressure fluid flow and avoid unwanted friction and noise due to vibration, the nozzle assembly is permanently fixed to a part of the nozzle carrier by press fitting, for example, in which the nozzle assembly is received and protected, such as a fixed member constructed as a closed member, to ensure reliable assembly of the metal parts.

[0005] Despite utilizing these systems, several challenges exist. One significant issue is the tuning of the spray performance. Many known systems are limited in their ability to adjust the spray performance to suit different cleaning requirements. This lack of flexibility can lead to inefficient cleaning, where some areas of the tank may be over-cleaned while others are under-cleaned.

[0006] Typically, replacing the nozzle assembly allows for adjustment of the spray performance. Therefore, tank cleaning systems that allow for nozzle assembly replacement are known, as disclosed in EP 4 017 644B1. However, in known systems with removable nozzle assemblies, the nozzle assembly is permanently attached to a fixed component, which increases the cost of replacing the nozzle assembly.

[0007] Despite substantial progress in tank cleaning, improvements are still needed to address these issues. Specifically, there is a need for systems that provide easier and more cost-effective adjustment of spray performance. Such improvements would not only reduce operating costs and downtime but also enhance the overall effectiveness and reliability of tank cleaning operations.

[0008] Therefore, one technical problem of this invention is to provide a tank cleaning system that at least partially overcomes the shortcomings of known systems. Utility Model Content

[0009] The purpose of this invention is to provide a can cleaner that overcomes one or more of the disadvantages of known systems.

[0010] According to a first aspect of the present invention, these objectives are achieved by a tank cleaner according to the first aspect.

[0011] Specifically, this objective is achieved by a tank cleaner designed for efficient tank cleaning, specifically a track-mounted cleaner. The tank cleaner includes a static body configured to connect to a supply line for receiving cleaning fluid, ensuring a stable and reliable connection. A rotating body mounted on the static body rotates about a main axis of rotation, facilitating comprehensive cleaning coverage. A nozzle carrier rotates about a secondary axis different from the main axis. The nozzle carrier includes a housing portion attached to the rotating body and connected to the supply line for receiving cleaning fluid. The nozzle carrier also includes multiple nozzle devices and corresponding fixing members, each fixing member securing a nozzle device to the housing portion. Each nozzle device is characterized by a nozzle insert having a discharge orifice for releasing cleaning fluid, and the flow guide portion guiding the fluid from the housing portion to the discharge orifice.

[0012] The static body serves as a stable base for connection to the fluid supply device. The rotating body allows movement about a central axis, enabling the cleaner to cover a larger area within the tank. The rotation of the nozzle carrier about a secondary axis, different from the main axis, allows for uniform distribution of the cleaning fluid within the tank. Therefore, the advantages of this configuration include increased cleaning efficiency due to dual-axis rotation, which allows for thorough coverage of the tank's inner surface.

[0013] In the nozzle carrier, the housing portion serves as a conduit for the cleaning fluid. The nozzle assembly is the component that actually dispenses the fluid, and the retaining members hold these components in place. The nozzle insert is the part of the nozzle assembly that guides the fluid through the discharge orifice. The flow guide portion ensures that the fluid is efficiently guided to the orifice. It should be understood that the flow guide portion and the nozzle insert can be constructed as two separate parts or formed as a single unit.

[0014] This invention addresses the initially stated objective by providing that a nozzle insert is at least partially releasably received in a retaining member and / or housing portion, wherein the retaining member is configured to detachably engage with the housing portion. Thus, the retaining member holds the nozzle insert, at least partially releasably received in the retaining member and / or housing portion, in place. The detachable nature of the nozzle insert and retaining member facilitates easy replacement of the entire nozzle assembly or at least the nozzle insert, wherein the retaining member and housing portion can be used continuously. This results in reduced downtime and lower costs for adjusting spray performance by using the expensive retaining member and housing portion continuously with different nozzle assemblies, particularly with different nozzle inserts. The inventors recognize that releasably receiving the nozzle assembly by the retaining member and / or housing portion allows for adequate fixation and protection of the nozzle assembly under operating conditions. Furthermore, by allowing individual replacement of the nozzle assembly, greater flexibility in material design is provided, as the retaining member and / or housing portion that receives and protects the nozzle assembly can be designed to be more robust for continuous use, wherein the nozzle assembly protected by the retaining member can be formed from a less robust and therefore cheaper material. In particular, such a retaining member can be configured to at least partially receive the nozzle insert and to be configured as a nozzle closing member for engagement with a portion of the housing.

[0015] It should be understood that the nozzle insert and the flow guide can be formed as an integral part or defined by separate parts. When the nozzle insert and the flow guide are separate parts, the flow guide can be arranged at a certain distance from the nozzle insert or in direct contact with the nozzle insert.

[0016] Other embodiments of the present invention are given in other aspects, which further develop the concept of the present invention in the context of the object of the present invention with respect to advantageous features and additional advantages.

[0017] In a first embodiment, the nozzle assembly is at least partially formed of a polymer material, specifically, the nozzle insert and the flow guide portion are formed of a polymer material. The nozzle assembly includes a nozzle insert and a flow guide portion, wherein at least one of the nozzle insert and the flow guide portion is at least partially formed of a polymer material. Introducing polymer materials as construction elements for these components brings several advantages to the can cleaner. Compared to conventional metal components, polymers offer weight reduction, which improves the ease of handling and installation of the can cleaner. The use of polymer materials also provides manufacturing advantages, such as cost-effectiveness and the ability to mold complex shapes with high precision, which enhances the performance characteristics of the nozzle insert and the flow guide portion. Furthermore, forming the nozzle insert and / or the flow guide portion from a polymer material improves the flow characteristics of the cleaning fluid by reducing flow resistance. The polymer-formed nozzle insert is still designed to be at least partially releasably received in the fixing member and / or housing portion, thus maintaining a detachable engagement with the housing portion. This ensures that the functional integrity and operational efficiency of the can cleaner are maintained while fully utilizing the benefits of the polymer material. Alternatively or additionally, flow guide sections formed of polymers continue to guide the cleaning fluid from the housing portion to the discharge orifice, thereby ensuring a consistent and directional flow of the cleaning fluid. The material composition does not alter the fundamental communication mechanism between these components but improves their efficiency and cost-effectiveness. Furthermore, the nozzle insert formed of polymer material allows for self-sealing between the nozzle insert and the retaining member and / or housing portion received therein at corresponding contact areas, thus providing an external seal for the nozzle assembly. Additionally, the flow guide section formed of polymer material allows for self-sealing between the flow guide section and the housing portion of the nozzle carrier at corresponding contact areas, thus providing an internal seal for the nozzle assembly. Moreover, the use of polymer materials, with or without filler material, allows for advanced manufacturing techniques, such as injection molding or 3D printing, which enable the fabrication of more complex sections. Therefore, the introduction of polymer materials into these specific portions of the nozzle assembly brings significant improvements in material properties and manufacturing advantages while maintaining the essential functional characteristics of the can cleaner.

[0018] In another embodiment, the nozzle insert and flow guide portion are integrally formed. This means that the nozzle insert and flow guide portion are manufactured as a single, integral piece, rather than as separate components to be assembled later. This integral formation offers several advantages to the can cleaner. First, it simplifies the overall design and manufacturing process by reducing the number of individual parts that need to be produced and assembled. This can lead to a reduction in manufacturing costs and potential points of failure. Second, integral formation enhances the structural integrity and durability of the nozzle insert and flow guide portion. By being a single piece, the risk of misalignment or improper fitting during assembly is eliminated, ensuring consistent performance and reliability. Additionally, this design improves the hydrodynamics within the nozzle because there are no seams or gaps that could interfere with the flow of the cleaning fluid. This can result in a more efficient and effective cleaning process, as the fluid is smoothly guided from the housing portion to the discharge orifice.

[0019] In another embodiment, the nozzle assembly has an external stop shoulder, and the housing portion has at least one receiving space with a mating internal stop shoulder. The internal stop shoulder axially secures the nozzle assembly in a mounting position, where it is fixed within the receiving space by engagement of a retaining member with the housing portion. The external stop shoulder on the nozzle assembly and the mating internal stop shoulder within the receiving space of the housing portion work together to ensure that the nozzle assembly is properly aligned and remains in place during operation. This axial securing mechanism prevents unintended movement or detachment of the nozzle assembly, which could otherwise impair cleaning efficiency or damage the tank cleaner. The engagement of the retaining member with the housing portion further reinforces this fixed positioning, providing an additional layer of stability and reliability. This feature results in the advantage of easy assembly and disassembly of the nozzle assembly, facilitating maintenance and replacement without the need for complex tools or procedures. It also ensures that the nozzle assembly remains securely in place during the cleaning process, thereby maintaining consistent performance and reducing the risk of operational failure.

[0020] In another embodiment, the housing portion has a housing sealing surface, and the nozzle assembly extends axially and has a bottom sealing surface oriented axially, which rests sealingly against the housing sealing surface. The housing portion is described as having a housing sealing surface, while the nozzle assembly extends axially and is characterized by a bottom sealing surface oriented towards the housing sealing surface. This bottom sealing surface is designed to rest sealingly against the housing sealing surface. This configuration implies precise alignment and sealing engagement between the nozzle assembly and the housing portion, which is crucial for ensuring that the cleaning fluid is properly guided and contained within the desired flow path. The introduction of the housing sealing surface and the bottom sealing surface provides additional sealing to prevent dust or other substances, as well as undesirable entry of the cleaning fluid, into the housing portion of the nozzle carrier. Furthermore, this feature simplifies the maintenance and assembly process, as the sealing surfaces provide clear engagement points that can be easily inspected and maintained. The presence of defined sealing surfaces on both the housing portion and the nozzle assembly indicates that the design is intended to accommodate variations in the pressure or flow rate of the cleaning fluid, as this sealing helps to maintain a consistent flow path under different operating conditions.

[0021] In another embodiment, the flow guide portion defines a flow channel extending from the bottom end of the defined inlet orifice to the nozzle insert. A bottom sealing surface is arranged at a distance from the bottom end such that the flow channel extends beyond the bottom sealing surface into the housing portion. The flow guide portion is responsible for defining the flow channel, which is crucial for guiding the cleaning fluid from the housing portion to the discharge orifice. The bottom end of the defined inlet orifice serves as the entry point for the cleaning fluid into the nozzle insert. The bottom sealing surface, positioned at a distance from the bottom end, ensures that the flow channel extends beyond the bottom sealing surface into the housing portion, thus providing an increased flow channel length, which is beneficial in terms of the flow characteristics of the cleaning fluid. This arrangement ensures that the cleaning fluid is effectively guided through the flow channel, from the inlet orifice at the bottom end, across the bottom sealing surface, and into the housing portion, ultimately reaching the discharge orifice for effective distribution.

[0022] In another embodiment, the bottom sealing surface is located at the outer stop shoulder. Positioning the bottom sealing surface at the outer stop shoulder implies a more robust and reliable sealing arrangement, preventing leakage of cleaning fluid or ingress of dust or other substances, and ensuring that fluid is precisely guided through the discharge orifice. This configuration also facilitates easier maintenance and replacement of the nozzle insert, as the outer stop shoulder provides a clear and accessible point for engaging and disengaging the retaining member. By incorporating the bottom sealing surface at the outer stop shoulder, this design ensures that the nozzle insert remains securely in place during operation, thereby maintaining the consistent performance and efficiency of the tank cleaner.

[0023] In another embodiment, the nozzle insert has an internal tapering region that partially defines a flow channel and tapers towards the discharge orifice. The tapering region streamlines the flow of the cleaning fluid, thereby increasing the fluid velocity as it exits the discharge orifice. This enhances cleaning effectiveness by allowing the fluid to be projected onto the surface being cleaned with greater force or precision. The tapering region of the nozzle insert is a modification that enhances the function of the nozzle insert itself without altering the basic communication mechanism between the nozzle insert, the retaining member, and the housing portion. By tapering towards the discharge orifice, the nozzle insert facilitates more controlled and directional flow of the cleaning fluid, which can be particularly advantageous in applications requiring precise cleaning. The manufacture of the tapering region is simplified, especially when formed from polymer materials.

[0024] In another embodiment, the retaining member is configured as a closed member receiving the nozzle insert. More preferably, the retaining member has a distal stop shoulder that preferably projects radially inward, wherein the front end of the nozzle assembly surrounding the discharge orifice is sealed against the distal stop shoulder. The distal stop shoulder preferably projects inward and serves as a precision positioning device that ensures the nozzle assembly is correctly aligned and securely held in place when engaged with the retaining member. The front end of the nozzle assembly surrounding the discharge orifice is designed to seal against the distal stop shoulder, thereby creating a reliable seal to prevent leakage of cleaning fluid during operation. This sealing engagement is crucial for maintaining the efficiency and effectiveness of the cleaning process, as it ensures that the cleaning fluid is precisely guided through the discharge orifice while preventing dust or other substances from entering the tank. Additionally, this feature simplifies the assembly and disassembly process, as the nozzle assembly can be easily and accurately positioned within the retaining member, facilitating maintenance and replacement of the nozzle assembly.

[0025] In another embodiment, the housing portion has a plurality of mounting recesses, wherein a receiving space extends from each mounting recess into the housing body. More preferably, each mounting recess has a mounting thread configured to engage with a closed thread of a retaining member for releasably securing the nozzle assembly to the body portion. This feature ensures a robust and removable connection between the nozzle assembly and the housing portion, thereby enhancing the modularity and ease of maintenance of the can cleaner. Preferably, the retaining member also has a bottom surface axially spaced from the closed thread, which is received within the receiving space. This design element provides a more stable and precise alignment of the retaining member within the housing portion, ensuring the nozzle assembly remains securely in place during operation. The introduction of mounting and closed threads for securing the nozzle assembly to the housing portion allows for a more robust and reliable connection, which is crucial for the effective operation of the can cleaner. The removable engagement mechanism provided by the mounting and closed threads ensures that the nozzle assembly can be easily replaced or repaired without requiring extensive disassembly of the entire nozzle carrier. This modular design approach to can cleaners not only improves their maintainability but also allows for greater flexibility in constructing cleaners for different cleaning tasks.

[0026] In another embodiment, the mounting member and the nozzle assembly are formed from different materials. This difference in material composition is a significant feature that brings several advantages. By specifying that the mounting member and the nozzle assembly are formed from different materials, the embodiment highlights a thoughtful design consideration that balances the need for strength and durability with the benefits of corrosion resistance and weight reduction. This characteristic can improve the lifespan and reliability of the can cleaner, making it more suitable for a wide range of cleaning applications. The use of different materials also allows for the possibility of customizing the can cleaner for specific cleaning tasks, where material properties can be selected to match the requirements of the cleaning fluid and the environment. The mounting member is preferably formed from a metallic material, while the nozzle assembly is preferably formed from at least a polymeric material. The metallic material used for the mounting member provides robustness and strength, thereby ensuring a strong and stable attachment to the housing portion. This is crucial for maintaining the integrity of the connection under the pressure of the cleaning fluid. On the other hand, the polymeric material used for the nozzle assembly offers benefits in terms of flow characteristics and manufacturability. Additionally, polymeric materials can help reduce weight, which facilitates easier handling. The combination of these materials can also lead to a more cost-effective manufacturing process, as polymers are generally cheaper than metals and can be molded into complex shapes in a relatively easy manner.

[0027] In another embodiment, both the nozzle insert and the flow guide portion are at least partially releasably received in a retaining member. Thus, in addition to the nozzle insert, the flow guide portion is also at least partially releasably received in a retaining member configured to detachably engage with the housing portion. This configuration, besides the nozzle inlet, enhances the adaptability of spray performance by allowing easy replacement of the flow guide portion. Therefore, this feature allows for greater flexibility in the design and customization of the nozzle assembly, as different nozzle inserts and flow guide portions can be easily interchanged to meet specific cleaning performance requirements.

[0028] In another embodiment, the can cleaner further includes an external nozzle seal received between the stationary member and the housing portion. The introduction of the external nozzle seal provides an additional sealing mechanism, ensuring that the cleaning fluid is effectively contained within the nozzle assembly and preventing leakage. Additionally, it prevents dust or other substances from entering the can. This feature enhances the reliability and efficiency of the can cleaner by maintaining a consistent flow of cleaning fluid through the nozzle assembly.

[0029] In another embodiment, the housing portion includes a central bore configured to engage a gear member of the rotating body, wherein a central stop shoulder surrounds the central bore. The central bore is configured to receive at least one central sealing ring, specifically a first central sealing ring resting against the central stop shoulder with its first axially facing side resting, and a second central sealing ring resting against the central stop shoulder with its opposite axially facing side resting. The central bore allows for precise alignment and rotation of the nozzle carrier. This arrangement of the sealing rings provides a robust sealing mechanism that enhances the durability and performance of the tank cleaner. The sealing rings prevent fluid leakage along the central bore of the nozzle carrier.

[0030] The present invention addresses the initially stated objective in a second aspect by means of a nozzle device according to the second aspect. The nozzle device is suitable for use in a can cleaner, particularly in a can cleaner according to the first aspect. Specifically, the nozzle device is configured for fixation to a housing portion of a nozzle carrier of the can cleaner by a corresponding fixing member. The nozzle device has a nozzle insert with a discharge orifice for dispensing cleaning fluid and a flow guiding portion for guiding the cleaning fluid from the housing portion to the discharge orifice. The nozzle insert is configured for at least partially releasable reception in the fixing member. By providing a nozzle insert configured for at least partially releasable reception in the fixing member, the nozzle device has the same benefits as described with respect to the first aspect of the present invention. Therefore, the benefits and preferred embodiments of the first aspect of the present invention are also the benefits and preferred embodiments of the second aspect of the present invention.

[0031] This invention addresses the initially stated objective in a third aspect by referring to the subject matter of the third aspect. Specifically, this invention provides a method for manufacturing a nozzle device for a can cleaner, particularly a method for manufacturing a nozzle device according to the second aspect of this invention. The method includes the following steps:

[0032] Provide basic materials,

[0033] To melt the base material, and

[0034] A nozzle assembly with a nozzle insert and a flow guide section with internal flow channels is produced from a near-net-shape molten base material. In other words, the method begins by providing a base material, which is then melted to form a molten base material. This molten base material is subsequently used in a near-net-shape production process to produce the nozzle assembly. The nozzle assembly produced by this method includes a nozzle insert and a flow guide section, the flow guide section including internal flow channels. This process ensures that the nozzle insert and the flow guide section including the internal flow channels are integrally formed from the molten base material. The new features introduced by this method bring several advantages. By utilizing a near-net-shape production process, this method improves the precision and efficiency of manufacturing nozzle assemblies, thereby reducing the need for extensive post-processing and material waste. The integration of the nozzle insert and the flow guide section with internal flow channels in a single production step further ensures a seamless and robust structure, thereby improving the overall performance and reliability of the nozzle assembly. Additionally, this method allows for greater design flexibility, enabling the production of complex geometries and internal structures that optimize the flow of cleaning fluid through the nozzle assembly and are typically not achievable using methods such as grinding. This results in improved cleaning efficiency and effectiveness when the nozzle device is used in a can cleaner.

[0035] In another embodiment, near-net-shape production of nozzle devices involves applying a base material through additive manufacturing, specifically 3D printing or injection molding, to form a near-net-shape nozzle device. Additive manufacturing, particularly 3D printing, allows for precise control over the geometry and material properties of the nozzle device, enabling the production of complex shapes and internal structures that may be impossible using conventional manufacturing methods. This can lead to improved performance characteristics, such as optimized fluid flow paths and enhanced durability. Injection molding, on the other hand, offers the advantage of high-volume production with consistent quality, making it suitable for the large-scale production of nozzle devices.

[0036] In a third aspect, this invention addresses the initially stated objective by means of a method for adjusting the jet performance of a can cleaner according to the third aspect. The method includes, in a first step of adjusting the jet performance of the can cleaner, a disengagement of a retaining member from the housing portion of a nozzle carrier, a crucial step in altering the jet characteristics. This disengagement allows at least a first nozzle insert or the entire first nozzle assembly to be removed from a receiving space extending from a mounting recess into the housing portion. This interchangeability is a key feature, as it allows the jet performance of the can cleaner to be customized by changing the nozzle insert or assembly. The method also includes a step of detachably engaging the retaining member with the housing portion of the nozzle carrier, thereby securing a newly inserted nozzle insert or assembly in place. This detachable engagement is important for ensuring that the nozzle assembly remains firmly attached during operation while still allowing for easy removal and replacement when necessary. The method provides the ability to adjust the jet performance by using a second nozzle insert with a discharge orifice having a different diameter than the discharge orifice of the first nozzle assembly. This change in diameter directly affects the flow rate and jet pattern of the cleaning fluid, thus enabling the can cleaner to be customized to specific cleaning requirements. By allowing for the replacement of nozzle inserts with different diameters, this method provides a flexible and effective means of optimizing the cleaning process for different tank configurations or contamination levels. The detachable engagement and receiving space facilitate communication between components—namely, the mounting members, the housing portion, and the nozzle insert or device—and together enable seamless interchangeability of the nozzle components to achieve the desired spray performance. Attached Figure Description

[0037] This disclosure will be illustrated in more detail by way of example with reference to the accompanying drawings, in which:

[0038] Figure 1 An embodiment of a tank cleaner having a static body, a rotating body, a nozzle carrier, and a fixing member is shown.

[0039] Figure 2 An exploded view of the nozzle carrier assembly and its various components is shown.

[0040] Figure 3 The previous view showed according to Figure 2 Nozzle carrier;

[0041] Figure 4 The cross-sectional side view shows the results according to Figure 2 Nozzle carrier;

[0042] Figure 5 The front view of the cross section shows the results according to Figure 2 Nozzle carrier;

[0043] Figure 6A detailed cross-sectional view of the nozzle assembly fixed within the housing portion is shown.

[0044] Figure 7 A schematic flowchart of a method for manufacturing a nozzle device is shown.

[0045] Figure 8 A schematic flowchart of a method for adjusting the spray performance of a tank cleaner is shown. Detailed Implementation

[0046] Figure 1 The illustration shows a can cleaner 1 designed for cleaning cans, specifically a track cleaner 2.

[0047] The tank cleaner 1 includes a static body 3, a rotating body 4, and a nozzle carrier 8. The static body 3 is configured to connect to a supply line 6 for receiving cleaning fluid. An adapter 7 associated with the static body 3 may also be provided for connecting the supply line 6 to the static body.

[0048] The rotating body 4 is mounted on the static body 3 and rotates about the main rotation axis R1. This rotational capability allows the rotating body 4 to perform cleaning operations within the tank by distributing cleaning fluid in a controlled manner. The rotating body 4, mounted on the static body 3, rotates about the main rotation axis R1, while the nozzle carrier 8, supported by the rotating body 4, rotates about the secondary rotation axis R2. The secondary rotation axis R2 is different from the main rotation axis R1.

[0049] A nozzle carrier 8, which rotates about a secondary rotation axis R2, is mounted on a rotating body 4. The nozzle carrier 8 is equipped with a plurality of nozzle devices (not shown) for dispensing cleaning fluid. Each of the plurality of nozzle devices is fixed by a corresponding fixing member 10, which is configured as a nozzle closing member in the illustrated embodiment.

[0050] Figures 2 to 5 A nozzle carrier 8 for a can cleaner 1 is shown. The nozzle carrier 8 includes various components, including a retaining member 10, a nozzle assembly 20, and a housing portion 30. The retaining member 10 includes a closing thread 12. The retaining member 10 is designed to engage with the housing portion 30, which is characterized by mounting threads 33 corresponding to the closing thread 12. The housing portion 30 defines a receiving space 35 for receiving a corresponding nozzle assembly of the nozzle assembly 20.

[0051] The nozzle device 20, preferably formed at least partially of a polymer material 28, includes a nozzle insert 23 having a discharge orifice 21 and a flow guiding portion 24. The nozzle insert 23 is configured such that at least a portion thereof is releasably received in a retaining member 10. However, in an alternative embodiment, the nozzle insert 23 may simply be received in the housing portion 30 and held in place by the retaining member 10, which may be configured as a locking member, such as a pin, for form-fit engagement.

[0052] The nozzle assembly 20 also includes an outer stop shoulder 25 and a bottom sealing surface 29. The bottom sealing surface 29 is oriented in the axial direction A and is designed to seal against the housing sealing surface of the housing portion 30 (see [reference]). Figure 6 The flow guide portion 24 defines a flow channel 26 extending from the bottom end portion 22 to the nozzle insert 23, and the bottom end portion 22 defines an inlet orifice 22a. The bottom sealing surface 29 is arranged at a distance from the bottom end portion 22 such that the flow channel 26 extends beyond the bottom sealing surface 29 into the housing portion 30.

[0053] The housing portion 30 includes a central bore 31 configured to engage a gear component of the rotating body 4. A central stop shoulder 34 surrounds the central bore 31. The central bore 31 is configured to receive at least one central sealing ring, specifically a first central sealing ring 51 resting against a first axially facing side of the central stop shoulder 34 and a second central sealing ring 53 resting against the opposite axially facing side of the central stop shoulder 34. A fixing device 52 may be arranged between the sealing rings 53 and 55 to support the positioning of a drive shaft (not shown) for driving the nozzle carrier 8.

[0054] Additionally, the assembly includes an external nozzle seal 40 received between the retaining member 10 and the housing portion 30. The retaining member 10 also has a bottom surface 13 spaced axially from the closing thread 12, which is received within a receiving space 35. The retaining member 10 is designed to engage detachably with the housing portion 30, thereby allowing for easy replacement or maintenance of the nozzle assembly 20.

[0055] The nozzle insert 23 has an internal tapering region 27 that partially defines the flow passage 26. The tapering region 27 tapers toward the discharge orifice 21, thereby ensuring a concentrated and effective spray pattern for cleaning the canister. The housing portion 30 also has a plurality of mounting recesses 32, and a receiving space 35 extends from the mounting recesses 32 into the housing body 30. Each mounting recess 32 is configured to engage with a closed thread 12 of the retaining member 10 for releasably securing the nozzle assembly 20 to the housing portion 30.

[0056] Figure 6A detailed cross-sectional view of the nozzle assembly 20, which is inserted into the housing portion 30, is provided. (See also: Regarding...) Figures 2 to 5 As described, the nozzle assembly 20 includes a flow guide portion 24 that defines a flow channel 26 extending from a bottom end portion 22 having an inlet orifice 22a to a nozzle insert 23. A bottom sealing surface 29 of the nozzle assembly 20 is disposed at a distance from the bottom end portion 22, thereby allowing the flow channel 26 to extend beyond the bottom sealing surface 29 into the housing portion 30.

[0057] The retaining member 10 is depicted having a distal stop shoulder 18 against which the front end 21a of the nozzle assembly 20 surrounding the discharge orifice 21 is sealed. An outer nozzle seal 40 is positioned between the retaining member 10 and the housing portion 30 to further ensure a secure and leak-proof connection.

[0058] The housing portion 30 is shown having a housing sealing surface 37, against which the bottom sealing surface 29 of the nozzle assembly 20 rests in a sealing manner. This arrangement ensures that the cleaning fluid is effectively guided from the housing portion 30 through the flow guide portion 24 and out through the discharge port 21.

[0059] Figure 7 The illustration depicts a process used to manufacture, such as Figures 2 to 5 The flowchart shown is for a method 1000 for a nozzle device 20 for a can cleaner 1. The method begins with step 1100, which involves providing a base material 28a. This is followed by a second step 1200, in which the base material 28a is melted.

[0060] The process then proceeds to the third step 1300, which requires the near-net-shape production of the nozzle assembly 20 from the molten base material 28a. The nozzle assembly 20 includes a nozzle insert 23 and a flow guide portion 24 having an internal flow channel 26.

[0061] Step 1300 preferably branches into two alternative sub-steps. The first sub-step 1310 involves applying the base material 28a by additive manufacturing, specifically by 3D printing, to form a near-net-shape nozzle device 20. Alternatively, the second sub-step 1320 involves applying the base material 28a by injection molding to form a near-net-shape nozzle device 20.

[0062] Figure 8 The illustration shows the depiction used for adjustment, such as Figure 1The illustrated flowchart shows a method 2000 for improving the spray performance of the can cleaner 1. Method 2000 begins at step 2100, which involves disengaging the retaining member 10 from the housing portion 30 of the nozzle carrier 8. This step is crucial for accessing the internal components of the nozzle carrier 8, particularly the nozzle assembly 20. Following this, a second step 2200 requires removing at least the first nozzle insert 23, or the entire first nozzle assembly 20, from the receiving space 35, which extends from the mounting recess 33 into the housing portion 30. This removal process is necessary to facilitate replacement or adjustment of the nozzle insert 20 to alter the spray characteristics.

[0063] Subsequently, step 2300 involves inserting the second nozzle insert 23 or the entire second nozzle assembly 20 into the receiving space 35. The second nozzle insert 23 is selected based on desired injection performance, wherein the discharge orifice 21 has a second diameter different from the first diameter of the discharge orifice 21 of the first nozzle assembly 20. This insertion step ensures that the new nozzle insert 23 is properly positioned within the housing portion 30 to achieve the desired injection performance and flow rate.

[0064] Finally, step 2400 includes detachably engaging the retaining member 10 with the housing portion 30 of the nozzle carrier 8. This step secures the newly inserted nozzle insert 23 in place, ensuring it is firmly held within the housing portion 30 and ready for operation. Detachable engagement allows for easy further adjustment or replacement of the nozzle insert 23, providing flexibility in adjusting spray performance as needed.

[0065] List of reference numerals

[0066] 1 can of cleaner

[0067] 2-track cleaner

[0068] 3 Static Body

[0069] 4 Rotating Body

[0070] 6 supply pipelines

[0071] 8 Nozzle carrier

[0072] 10 Fixed Components

[0073] 11 Distal concave portion

[0074] 12 closed thread

[0075] 13 bottom

[0076] 17 Joint Surfaces

[0077] 18 distal stop shoulder

[0078] 19 Metallic Materials

[0079] 20 nozzle device

[0080] 21 Discharge port

[0081] 21a front end

[0082] 22 bottom end

[0083] 23 Nozzle Insert

[0084] 24 Flow Guiding Section

[0085] 25 External stop shoulder

[0086] 26 flow channels

[0087] 27 Gradual contraction area

[0088] 28 Polymer Materials

[0089] 29 Bottom sealing surface

[0090] 30 Shell Part

[0091] 31 Central Hole

[0092] More than 32 mounting recesses

[0093] 33 mounting threads

[0094] 34 Central stop shoulder

[0095] 35 Acceptance Space

[0096] 36 Matching internal stop shoulder

[0097] 37 Housing sealing surface

[0098] 40 External Nozzle Seal

[0099] 51 First Central Sealing Ring

[0100] 52 Fixed Components

[0101] 53 Second Central Sealing Ring

[0102] Axial direction

[0103] P Installation Location

[0104] R1 Principal axis of rotation

[0105] R2 secondary rotation axis

Claims

1. A can cleaner (1) for cleaning cans, the can cleaner (1) being a track-mounted cleaner (2), the can cleaner (1) comprising: A static body (3) configured to connect to a supply line (6) for receiving clean fluid. A rotating body (4) is mounted on the static body (3) and rotates about the main rotation axis (R1). A nozzle carrier (8) rotates about a secondary rotation axis (R2) different from the main rotation axis (R1). The nozzle carrier (8) has a housing portion (30), a plurality of nozzle devices (20), and a corresponding number of fixing members (10). The housing portion (30) is mounted to the rotating body (4) and is in fluid communication with the supply line (6) for receiving the cleaning fluid. Each of the fixing members (10) is configured to fix a corresponding nozzle device (20) to the housing portion (30). Each nozzle device (20) has a nozzle insert (23) and a flow guide portion (24), the nozzle insert (23) having a discharge orifice (21) for dispensing the cleaning fluid, and the flow guide portion (24) for guiding the cleaning fluid from the housing portion (30) to the discharge orifice (21). The nozzle insert (23) is characterized in that it is at least partially releasably received in the fixing member (10) and / or the housing portion (30), wherein the fixing member (10) is configured to engage with the housing portion (30) in a detachable manner.

2. The tank cleaner (1) according to claim 1. characterized in that The nozzle device (20) is at least partially formed of a polymer material (28).

3. The can cleaner (1) according to claim 1. characterized in that The nozzle insert (23) and the flow guide portion (24) are integrally formed.

4. The can cleaner (1) according to claim 1. characterized in that The nozzle device (20) has an external stop shoulder (25), and the housing portion (30) has at least one receiving space (35) with a mating internal stop shoulder (36), wherein the internal stop shoulder (36) axially fixes the nozzle device (20) in a mounting position (P), in which the nozzle device (20) is fixed in the receiving space (35) by the engagement of the fixing member (10) with the housing portion (30).

5. The can cleaner (1) according to claim 4. characterized in that The housing portion (30) has a housing sealing surface (37), and the nozzle device (20) extends in the axial direction (A) and has a bottom sealing surface (29) oriented in the axial direction (A), the bottom sealing surface being sealed against the housing sealing surface (37).

6. The can cleaner (1) according to claim 5. characterized in that The flow guide portion (24) defines a flow channel (26) extending from the bottom end portion (22) defining the inlet orifice (22a) to the nozzle insert (23), and the bottom sealing surface (29) is arranged at a distance from the bottom end portion (22) such that the flow channel (26) extends beyond the bottom sealing surface (29) into the housing portion (30).

7. The can cleaner (1) according to claim 6. characterized in that The bottom sealing surface (29) is located at the outer stop shoulder (25).

8. The can cleaner (1) according to claim 6. characterized in that The nozzle insert (23) has an internal tapering region (27) that partially defines the flow channel (26) and tapers toward the discharge orifice (21).

9. The can cleaner (1) according to claim 1. characterized in that The fixing member (10) has a distal stop shoulder (18) that protrudes radially inward, wherein the front end (21a) of the nozzle device (20) surrounding the discharge orifice (21) rests sealed against the distal stop shoulder (18).

10. The can cleaner (1) according to claim 5. characterized in that The housing portion (30) has a plurality of mounting recesses (32) with corresponding receiving spaces (35) extending from the mounting recesses into the housing portion (30). Each mounting recess (32) has a mounting thread (33) configured to engage with a closed thread (12) of the fixing member (10) for releasably securing the nozzle device (20) to the housing portion (30). The fixing member (10) also has a bottom surface (13) that is a distance away from the closed thread (12) in the axial direction (A), and the bottom surface (13) is received in the receiving space (35).

11. The can cleaner (1) according to claim 2. characterized in that The fixing member (10) and the nozzle device (20) are made of different materials.

12. The can cleaner (1) according to claim 10. characterized in that The nozzle insert (23) and the flow guide portion (24) are at least partially releasably received in the retaining member (10), wherein the retaining member (10) is configured to detachably engage with the housing portion (30).

13. The can cleaner (1) according to claim 2. characterized in that The nozzle insert (23) and the flow guide portion (24) are formed of polymer material (28).

14. The can cleaner (1) according to claim 11. characterized in that The fixing member (10) is formed of a metal material (19), and the nozzle device (20) is at least partially formed of a polymer material (28).

15. A nozzle device (20) for cleaning a can cleaner (1) used for cleaning a can, for use with a can cleaner (1) according to any one of the preceding claims. The nozzle device (20) is configured to be fixed to the housing portion (30) by a corresponding fixing member (10). wherein The nozzle device (20) has a nozzle insert (23) and a flow guide portion (24), the nozzle insert (23) having a discharge orifice (21) for dispensing the cleaning fluid, and the flow guide portion (24) for guiding the cleaning fluid from the housing portion (30) to the discharge orifice (21). The nozzle insert (23) is characterized in that it is configured to be received in the fixing member (10) at least partially in a releasable manner.

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