Stirring mechanism and automatic cooker

Abstract

The utility model relates to the technical field of kitchen equipment, in particular to a stirring mechanism and an automatic cooker, the stirring mechanism comprises a stirring blade and a driving assembly, the driving assembly drives the stirring blade to rotate, the stirring blade comprises an arc section and a linear section which are fixedly connected, and the driving assembly is in driving connection with the arc section; the outer edge of the stirring blade is in sliding connection with a scraping blade through at least one elastic piece, and the scraping blade is driven by the elastic piece to be far away from the stirring blade in the direction perpendicular to the end part of the outer edge of the stirring blade. By means of the arrangement, the defect that a stirring mechanism of an existing automatic cooker cannot be attached to the inner wall of a container all the time is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen equipment, in particular to a stirring mechanism and an automatic cooking machine. Background Art

[0002] In order to facilitate stir-frying, save labor, and avoid the uncertainty of manual operation, an automatic cooking machine is designed. The automatic cooking machine generally includes a stirring mechanism and a container for holding food. The container can heat the food inside it, and the stirring mechanism can automatically stir the food in the container under the drive of electricity.

[0003] Due to the limitations of manufacturing and assembly technology, the existing automatic cooking machines often have large circular runouts during high-speed rotation of the container, which means that the container will shake greatly, so that the stirring mechanism cannot always fit the inner wall of the container, which in turn causes the stirring mechanism to be unable to scrape off the food and sauces adhered to the inner wall of the container. The food and sauces adhered to the inner wall of the container will affect the uniformity of cooking, causing uneven heating of the food, thus affecting the cooking quality. Continuous heating of food in an adhered state may lead to the production of harmful substances such as acrylamide, posing a potential risk to food safety. In addition, food adhesion also increases the difficulty of cleaning the container. It takes more time and effort to clean up the food residues adhered to the inner wall of the container, and the use of strong detergents or sharp friction cleaning may also cause damage to the inner wall of the container. Utility Model Content

[0004] In order to solve the defect that the stirring mechanism of the existing automatic cooking machine cannot always fit the inner wall of the container, the utility model provides a stirring mechanism and an automatic cooking machine.

[0005] The technical solution adopted by the utility model is a stirring mechanism, comprising a stirring blade and a driving component, wherein the driving component drives the stirring blade to rotate, the stirring blade comprises an arc segment and a straight line segment fixedly connected, and the driving component drives and connects the arc segment; the outer edge of the stirring blade is slidably connected to a scraper through at least one elastic member, and the scraper is driven by the elastic member to move away from the stirring blade in a direction perpendicular to the outer edge end of the stirring blade.

[0006] Preferably, the elastic member is a compression spring, a slot is provided on the scraper perpendicular to its outer edge, one end of the compression spring along its elastic force abuts against the bottom end of the slot, and the other end abuts against the outer edge end of the stirring blade.

[0007] Preferably, it also includes at least one limiting member, and at least one waist-shaped hole is opened on the scraper perpendicular to its surface, the length direction of the waist-shaped hole is perpendicular to the length direction / tangent direction of the scraper, the limiting member extends into the waist-shaped hole, and at least one end of the limiting member is connected to the stirring blade.

[0008] Preferably, at least one connecting hole is provided on the stirring blade perpendicular to the surface thereof, and the limiting member is sequentially passed through the connecting hole and the waist-shaped hole.

[0009] Preferably, a mounting groove is provided on the stirring blade perpendicular to the outer edge end thereof, and at least a portion of the scraper is slidably inserted into the mounting groove.

[0010] Preferably, the scraper extends out of the stirring blade at least at one end along its length direction, and the portion of the scraper extending out of the stirring blade extends to form a sealing portion, and the extending direction is perpendicular and toward the plane where the bottom of the adjacent mounting groove is located.

[0011] Preferably, the inner edge of the stirring blade extends inwardly to form a plurality of extension portions spaced apart from each other.

[0012] Preferably, the lengths of the plurality of extension portions along their extension directions are not completely equal.

[0013] The utility model also provides a stirring mechanism, including a stirring blade and a driving component, wherein the driving component drives the stirring blade to rotate, and the stirring blade includes an arc segment and a straight segment fixedly connected, and the driving component drives the arc segment; it also includes: a scraper, a mounting groove is provided on the stirring blade perpendicular to its outer edge end, and the scraper part is slidably inserted in the mounting groove; a compression spring, a slot hole is provided on the scraper perpendicular to its outer edge end, one end of the compression spring along its elastic force abuts against the bottom end of the slot hole, and the other end abuts against the bottom end of the mounting groove; a limiting member, a waist-shaped hole is provided on the scraper perpendicular to its surface, and the length direction of the waist-shaped hole is perpendicular to the length direction / tangent direction of the scraper, and a connecting hole is provided on the stirring blade perpendicular to its surface, and the limiting member is sequentially penetrated through the connecting hole and the waist-shaped hole.

[0014] The utility model also provides an automatic cooking machine, comprising a container and the above-mentioned stirring mechanism, wherein the maximum sliding displacement of the scraper is greater than / equal to the circular runout tolerance when the container rotates.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The outer edge of the stirring blade is slidably connected with a scraper through an elastic member, and the scraper moves away from the stirring blade under the drive of the elastic member, and the moving away direction is perpendicular to the outer edge end of the stirring blade. Therefore, when the container of the automatic cooking machine produces a circular jump away from the stirring blade, the scraper can move away from the rotation center of the stirring blade under the elastic force of the elastic member, approach and fit tightly against the inner wall of the container; when the container produces a circular jump and approaches the stirring blade, the scraper is squeezed by the inner wall of the container, and then the elastic member is compressed, and the scraper approaches the rotation center of the stirring blade, that is, under the drive of the elastic member, the scraper can always keep fitting tightly against the inner wall of the container, and fully scrape up the food and sauce adhered to the inner wall of the container, so that the food is heated more evenly during the cooking process, the probability of burning food is reduced, the cooking quality is improved, food safety is guaranteed, the cleaning difficulty of the container is reduced, and the service life of the container is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0018] Figure 1 It is a partial structural schematic diagram of the stirring mechanism;

[0019] Figure 2 yes Figure 1 The main view;

[0020] Figure 3 It is a partial exploded view of the stirring mechanism from one perspective;

[0021] Figure 4 This is a partial exploded view of the stirring mechanism from another perspective;

[0022] Figure 5 It is a partial cross-sectional view of the stirring mechanism and the container;

[0023] Figure 6 yes Figure 5 Enlarged view of point A.

[0024] 10. stirring blade; 11. arc segment; 12. straight segment; 13. mounting groove; 14. connecting hole; 15. extension part; 16. shaft sleeve;

[0025] 20. scraper; 21. slot; 22. compression spring; 23. waist-shaped hole; 24. stopper; 25. sealing part;

[0026] 30. Container. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as limiting the utility model.

[0028] In one embodiment, Figure 1-4 As shown, a stirring mechanism includes a stirring blade 10 and a driving component, and the driving component drives the stirring blade 10 to rotate. The stirring blade 10 includes an arc segment 11 and a straight segment 12 that are fixedly connected. The driving component drives the arc segment 11, and the arc segment 11 is a quarter arc, so that the stirring mechanism can be applied to the pot of an automatic cooking machine with a hemispherical lower end and a cylindrical upper end. The driving component can drive the stirring blade 10 to rotate along the inner wall of a container 30, and the arc segment 11 can fit the hemispherical part of the lower end of the container 30, and the straight segment 12 can fit the cylindrical part of the upper end of the container 30, so that the food in the container 30 is fully stirred.

[0029] The outer edge of the stirring blade 10 is slidably connected to a scraper 20 via an elastic member. The scraper 20 is driven by the elastic member to move away from the stirring blade 10 in a direction perpendicular to the outer edge of the stirring blade 10 . Thus, when the container 30 of the automatic cooking machine makes a circular jump away from the stirring blade 10, the scraper 20 can be away from the rotation center of the stirring blade 10 under the action of the elastic force of the elastic member, and approach and fit tightly against the inner wall of the container 30; when the container 30 makes a circular jump close to the stirring blade 10, the scraper 20 is squeezed by the inner wall of the container 30, and then the elastic member is compressed, and the scraper 20 approaches the rotation center of the stirring blade 10, that is, under the drive of the elastic member, the scraper 20 can always keep fitting tightly against the inner wall of the container 30, and fully scrape up the food and sauce adhered to the inner wall of the container 30, so that the food is heated more evenly during the cooking process, the probability of burning food is reduced, the cooking quality is improved, food safety is guaranteed, the cleaning difficulty of the container 30 is reduced, and the service life of the container 30 is extended.

[0030] Specifically, the elastic member can be a compression spring 22, compression rubber, etc. The driving assembly can include a stirring motor and a sleeve 16 with a flat hole, the output shaft of the stirring motor is plugged into the sleeve 16, and the sleeve 16 is fixedly connected to the arc segment 11 of the stirring blade 10, so that the driving assembly can drive the stirring blade 10 to drive the scraper 20 to rotate along the inner wall of the container 30. The scraper 20 is evenly distributed along the length direction of the stirring blade 10, so the shape of the scraper 20 matches the shape of the stirring blade 10, and the scraper 20 is also divided into an arc type at one end connected to each other and a straight type at one end. Both the stirring blade 10 and the scraper 20 can be coated with food-grade Teflon, that is, polytetrafluoroethylene coating, which can prevent food from adhering to the surface of the stirring blade 10 and the scraper 20, and is easy to clean.

[0031] In other embodiments, a plurality of elastic members may be provided, and the plurality of elastic members are arranged along the length direction of the stirring blade 10 , so that the sliding of the scraper 20 under the elastic force of the elastic members is more stable.

[0032] In one embodiment, Figure 3 , 4 As shown in , 6, the elastic member is a compression spring 22, and a slot 21 is provided on the scraper 20 perpendicular to the outer edge end thereof. One end of the spring along its elastic force abuts against the bottom end of the slot 21, and the other end abuts against the outer edge end of the stirring blade 10, so that the compression spring 22 can provide the scraper 20 with a force that drives the scraper 20 away from the stirring blade 10 in a direction perpendicular to the outer edge end of the stirring blade 10. Specifically, the slot 21 is provided as a cylindrical hole matching the compression spring 22, and the two ends of the compression spring 22 can only abut against the scraper 20 and the stirring blade 10, respectively, so as to facilitate the disassembly and replacement of the scraper 20 and the compression spring 22 on the stirring blade 10, and at the same time facilitate the full cleaning of the stirring blade 10 and the scraper 20 to ensure hygienic conditions. In other embodiments, the two ends of the compression spring 22 can also be welded to the scraper 20 and the stirring blade 10, respectively, so that the connection between the scraper 20 and the stirring blade 10 is more stable and reliable.

[0033] The spring can be always in a compressed state by designing the distance between the stirring mechanism and the inner wall of the container 30 , so that the spring can always use its elastic force to press the scraper 20 against the inner wall of the container 30 .

[0034] In other embodiments, a slot can also be opened on the stirring blade, and the two ends of the compression spring respectively abut the bottom end of the slot and the inner edge end of the scraper blade, which can also provide the scraper blade with an elastic force to drive the scraper blade away from the stirring blade in a direction perpendicular to the outer edge end of the stirring blade.

[0035] In one embodiment, the stirring mechanism further includes a stopper 24, and a waist-shaped hole 23 is provided on the scraper 20 perpendicular to the surface thereof. When the waist-shaped hole 23 is provided in the straight portion of the scraper 20, the length direction of the waist-shaped hole 23 is perpendicular to the length direction of the scraper 20; when the waist-shaped hole 23 is provided in the arc portion of the scraper 20, the length direction of the waist-shaped hole 23 is perpendicular to the tangent direction of the scraper 20. The stopper 24 is connected to the stirring blade 10, and the stopper 24 extends into the waist-shaped hole 23, and the stopper 24 can slide along the length direction of the waist-shaped hole 23, so that the scraper 20 with the waist-shaped hole 23 can only approach or move away from the stirring blade 10 in a direction perpendicular to the outer edge end of the stirring blade 10 under the limitation of the stopper 24. The length of the waist-shaped hole 23 limits the sliding distance of the scraper 20, and the length direction of the waist-shaped hole 23 limits the sliding direction of the scraper 20, thereby ensuring that the scraper 20 can still stick to the inner wall of the pot when the container 30 undergoes circular jump, while preventing the scraper 20 from deviating from its position and causing damage, loss, etc.

[0036] In one embodiment, a connection hole 14 is provided on the stirring blade 10 perpendicular to the surface thereof, and a stopper 24 is sequentially provided through the connection hole 14 and the waist-shaped hole 23. Driven by the stopper 24, the stirring blade 10 can slide relative to the scraper 20 along the length direction of the waist-shaped hole 23. The connection member can be a pin, a bolt, a screw, etc., and both ends thereof can be locked by nuts. The position where the stopper 24 is connected to the stirring blade 10 can also be directly welded.

[0037] In other embodiments, a plurality of waist-shaped holes 23 may be provided on the scraper 20, a plurality of connecting holes 14 may be provided on the stirring blade 10, and the stirring mechanism includes a plurality of stoppers 24, each stopper 24 being sequentially penetrated with its corresponding connecting hole 14 and waist-shaped hole 23. With multiple stoppers, the sliding of the scraper 20 is more continuous and stable, and the stopper is more precise, thus avoiding uneven stirring caused by messy sliding.

[0038] In other embodiments, the waist-shaped hole can be opened on the stirring blade, and the connecting hole can be opened on the scraper, which can also serve as a limit for the scraper.

[0039] In one embodiment, a mounting groove 13 is provided on the stirring blade 10 perpendicular to the outer edge thereof, and at least a portion of the scraper blade 20 is slidably inserted into the mounting groove 13. The scraper blade 20 is inserted into the mounting groove 13 on the stirring blade 10, and the movement of the scraper blade 20 along the direction perpendicular to the side wall of the mounting groove 13 is limited. The connection between the stirring blade 10 and the scraper blade 20 is more stable and reliable, and the scraper blade 20 is easy to install and not easy to fall off.

[0040] In one embodiment, the scraper 20 extends out of the stirring blade 10 at the end thereof in the length direction, and the portion of the scraper 20 extending out of the stirring blade 10 extends to form a sealing portion 25, and the extension direction is perpendicular to and toward the plane where the bottom of the adjacent mounting groove 13 is located. On the one hand, the scraper 20 extends out of the stirring blade 10 in the length direction, the length of the scraper 20 increases, the contact area between the outer edge and the inner wall of the container 30 is enlarged, and the range of its scraping is increased, further improving the cooking quality. On the other hand, the sealing portion 25 is also formed on the scraper 20, so that when the scraper 20 slides away from the bottom of the mounting groove 13, the end opening of the mounting groove 13 in the length direction can be blocked by the sealing portion 25, preventing food from falling into the mounting groove 13, hindering the sliding of the scraper 20, ensuring the normal use of the scraper 20, and reducing the difficulty of cleaning the mounting groove 13.

[0041] The scraper 20 may extend out of the stirring blade 10 at one end or both ends along the length direction thereof to form a sealing portion 25 , which can be set according to actual needs.

[0042] In one embodiment, the inner edge of the stirring blade 10 extends inward to form a plurality of spaced extensions 15. The plurality of spaced extensions 15 can extend into the food to further break up the food, so that the food is fully mixed, the stirring effect of the stirring mechanism is better, and the final cooking quality is higher.

[0043] In one embodiment, the lengths of the multiple extension portions 15 along their extension directions are not completely equal, so that multi-pass stirring within different depth ranges can be formed to stir the food more evenly and thoroughly.

[0044] Furthermore, the lengths of two adjacent extension portions 15 along their extension directions are not equal, thereby generating a staggered stirring action, thereby preventing food from sliding back and forth on the surface without sinking, and achieving better stirring coverage and stirring effect.

[0045] In one embodiment, a stirring mechanism includes a stirring blade 10 and a driving assembly, wherein the driving assembly drives the stirring blade 10 to rotate, and the stirring blade 10 includes an arc segment 11 and a straight segment 12 that are fixedly connected, and the driving assembly drives the connecting arc segment 11. Specifically, the width of the arc segment 11 at one end close to the driving assembly is increased, which can improve the connection strength between the stirring blade 10 and the driving assembly, and the wider end can disperse the driving force transmitted from the driving assembly to the stirring blade 10, reduce the stress concentration per unit area, and reduce the possibility of fatigue fracture of the stirring blade 10. The wide end also increases the mass of the stirring blade 10, which can improve the inertia of the stirring mechanism and facilitate its stirring effect in viscous materials.

[0046] The stirring mechanism also includes a scraper 20, a compression spring 22 and a stopper 24. A mounting groove 13 is provided on the stirring blade 10 perpendicular to the outer edge end thereof, and the scraper 20 is partially slidably inserted into the mounting groove 13. The mounting groove 13 limits the movement of the scraper 20, thereby improving the stability of the installation of the scraper 20. A slot hole 21 is provided on the scraper 20 perpendicular to the outer edge end thereof, and the compression spring 22 abuts against the bottom end of the slot hole 21 along one end of its elastic force, and abuts against the bottom end of the mounting groove 13 at the other end. The compression spring 22 can provide an elastic force to keep the scraper 20 always close to the inner wall of the container 30. A waist-shaped hole 23 is provided on the scraper 20 perpendicular to its surface, and the length direction of the waist-shaped hole 23 is perpendicular to the length direction / tangent direction of the scraper 20. A connecting hole 14 is provided on the stirring blade 10 perpendicular to its surface. The limiting member 24 is sequentially penetrated through the connecting hole 14 and the waist-shaped hole 23, that is, a connecting hole 14 is provided on each of the two side walls of the mounting groove 13, and the limiting member 24 sequentially penetrates a connecting hole 14, a waist-shaped hole 23 and another connecting hole 14. The two ends of the limiting member 24 are locked with the two connecting holes 14, thereby limiting the sliding direction of the scraper 20 so that it only slides in the direction of the circular runout of the inner wall of the cookware.

[0047] In one embodiment, Figure 5 As shown, an automatic cooking machine includes a container 30 and the above-mentioned stirring mechanism. The maximum sliding displacement of the scraper 20 is greater than / equal to the circular runout tolerance when the container 30 rotates. Therefore, no matter how the container 30 shakes, the scraper 20 can be kept in close contact with the inner wall of the container 30, so that the food adhering to the inner wall of the container 30 can be fully scraped off, so that the food is heated more evenly during the cooking process, the probability of burning the food is reduced, and the cooking quality is improved.

[0048] The stirring mechanism and the container 30 can be driven by different motors. The stirring mechanism can include two stirring blades 10 arranged opposite to each other. Sealing rings are arranged at the positions where the stirring mechanism and the container 30 are connected to the pot to prevent liquid from leaking into the motor and damaging the motor. The pot can be a non-coated pot, which is safe and reliable and saves the cost of coating.

[0049] In the description of this specification, if the terms "embodiment one", "this embodiment", "in an embodiment" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model or the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in an appropriate manner.

[0050] In the description of this specification, the terms "connect", "install", "fix", "set", "have", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0052] The above description of the embodiments is to facilitate ordinary technicians in the technical field to understand and apply the technology of this case. People familiar with the technology in this field can obviously make various modifications to these examples easily and apply the general principles described here to other embodiments without creative work. Therefore, this case is not limited to the above embodiments. Modifications to the following situations should all be within the scope of protection of this case: ① A new technical solution based on the technical solution of the utility model and combined with existing common knowledge, the technical effect produced by the new technical solution does not exceed the technical effect of the utility model; ② The equivalent replacement of some features of the technical solution of the utility model by using known technology, the technical effect produced is the same as the technical effect of the utility model; ③ The technical solution of the utility model can be expanded based on the technical solution of the utility model, and the substantive content of the expanded technical solution does not exceed the technical solution of the utility model; ④ The equivalent transformation made by using the contents of the specification and drawings of the utility model is directly or indirectly applied to other related technical fields.

Claims

1. A stirring mechanism, comprising a stirring blade and a driving assembly, wherein the driving assembly drives the stirring blade to rotate, characterized in that: The stirring blade includes an arc segment and a straight segment that are fixedly connected, and the driving component drives and connects the arc segment; the outer edge of the stirring blade is slidably connected to a scraper through at least one elastic member, and the scraper is driven by the elastic member to move away from the stirring blade in a direction perpendicular to the outer edge end of the stirring blade.

2. The stirring mechanism according to claim 1, characterized in that: The elastic member is a compression spring, and a slot is provided on the scraper perpendicular to its outer edge. One end of the compression spring along its elastic force abuts against the bottom end of the slot, and the other end abuts against the outer edge of the stirring blade.

3. The stirring mechanism according to claim 1, characterized in that: It also includes at least one limiting member, wherein at least one waist-shaped hole is opened on the scraper perpendicular to its surface, the length direction of the waist-shaped hole is perpendicular to the length direction / tangent direction of the scraper, the limiting member extends into the waist-shaped hole, and at least one end of the limiting member is connected to the stirring blade.

4. The stirring mechanism according to claim 3, characterized in that: At least one connecting hole is provided on the stirring blade perpendicular to the surface thereof, and the limiting member is sequentially passed through the connecting hole and the waist-shaped hole.

5. The stirring mechanism according to claim 1, characterized in that: The stirring blade is provided with a mounting groove perpendicular to the outer edge end thereof, and at least a part of the scraper is slidably inserted into the mounting groove.

6. The stirring mechanism according to claim 5, characterized in that: At least one end of the scraper blade along its length direction extends out of the stirring blade, and the portion of the scraper blade extending out of the stirring blade extends to form a sealing portion, and the extension direction is perpendicular to and toward the plane where the bottom of the adjacent mounting groove is located.

7. The stirring mechanism according to claim 1, characterized in that: The inner edge of the stirring blade extends inwardly to form a plurality of extension portions spaced apart from each other.

8. The stirring mechanism according to claim 7, characterized in that: The lengths of the plurality of extension portions along their extension directions are not completely equal.

9. A stirring mechanism, characterized in that: The invention comprises a stirring blade and a driving component, wherein the driving component drives the stirring blade to rotate, wherein the stirring blade comprises an arc segment and a straight line segment which are fixedly connected, and the driving component drives and connects the arc segment; and further comprises: A scraper blade, wherein a mounting groove is provided on the stirring blade perpendicular to the outer edge end thereof, and the scraper blade is partially slidably inserted into the mounting groove; A compression spring, wherein a slot hole is provided on the scraper perpendicular to the outer edge of the scraper, and one end of the compression spring along its elastic force abuts against the bottom end of the slot hole, and the other end abuts against the bottom end of the mounting groove; A limiting member is provided on the scraper blade with a waist-shaped hole perpendicular to its surface, the length direction of the waist-shaped hole is perpendicular to the length direction / tangent direction of the scraper blade, a connecting hole is provided on the stirring blade perpendicular to its surface, and the limiting member is sequentially penetrated through the connecting hole and the waist-shaped hole.

10. An automatic cooking machine, comprising a container, characterized in that: It also comprises a stirring mechanism according to any one of claims 1 to 9, wherein the maximum sliding displacement of the scraper is greater than / equal to the circular runout tolerance of the container when it rotates.

Images