Disposable protection for stirring shaft of a machine for making beverages

Abstract

The utility model discloses a kind of stirrer shaft disposable protective sheaths for machine for making beverage, belong to food processing equipment protection technical field.The protective sheath is mainly composed of A face and B face food-grade PE plastic sheet, two plastic sheets are adhered to form body, define the cavity corresponding with stirrer shaft and stirring structure, its recessed area is respectively adapted with stirrer shaft, stirring structure, and clearance is accurately controlled.Connection fixed structure is arranged in plane adhering area, with buckle, adhesive strip and the like form.It is also provided with separation auxiliary structure for easy operation.When using, first pull apart two plastic sheets, fixed after being sleeved into stirrer shaft and structure.The protective sheath is adapted by accurate size, meet different stirrer shaft and structure specification requirement.It has the advantages of high protection efficiency, strong reliability, convenient operation, wide application range and controllable cost, effectively solve the problem existing in the prior art of stirrer shaft protection mode, guarantee the health and safety of beverage making.

Description

Technical Field

[0001] This utility model relates to the field of food processing equipment protection technology, specifically to a disposable protective sleeve for the stirring shaft of beverage making machines (such as milkshake machines, milk tea machines, etc., equipped with a stirring shaft and related stirring components). Its core function is to protect the stirring shaft and its associated stirring structure during non-operational periods, preventing the intrusion of insects, ants, rats, and other organisms, as well as the adhesion of dust, thereby ensuring the cleanliness and safety of beverage preparation ingredients. Background Technology

[0002] In commercial settings such as tea shops, dessert shops, and coffee shops, beverage making equipment like milkshake machines, milk tea machines, and slush machines require their mixing shafts and associated mixing structures (such as whipping plates, mixing blades, and scraping blades) to be cleaned and wiped down after each use, as these components come into direct contact with food ingredients like milk, tea, and sugar. Currently, the industry commonly uses manual wrapping with plastic film for protection, attempting to prevent insects, ants, rats, and other organisms from crawling onto and contaminating the ingredients, thus preventing contamination of the beverages during subsequent use and ensuring beverage safety.

[0003] However, this existing protection method has many undeniable drawbacks: Low protection efficiency: When manually wrapping with plastic film, the mixing shaft and mixing structure must be wrapped one by one, which is a tedious process. Actual calculations show that protecting a single piece of equipment typically takes 3-5 minutes. If there are multiple such pieces of equipment in the business premises, it will significantly increase the time employees spend cleaning up before leaving get off work, reducing overall operational efficiency.

[0004] Inadequate protection: The plastic film is soft and difficult to fit tightly against the irregular shape of the stirring shaft and other stirring structures, easily resulting in gaps or loosening. These gaps and loosening become channels for insects, ants, and other organisms to enter contaminated parts. Furthermore, the plastic film itself lacks an effective fixing structure, and it is easily detached once touched by external force, instantly losing its protective function.

[0005] Poor ease of use: When wrapping with plastic film, the position needs to be repeatedly adjusted to cover key areas, which is cumbersome. When removing the plastic film before use the next day, fragments are easily left behind, posing a risk of secondary contamination for subsequent cleaning and affecting the hygienic environment for beverage preparation.

[0006] In summary, there is an urgent need for a disposable protection solution that can be adapted to the stirring shaft and stirring structure and has a high efficiency and reliable protection effect, so as to solve the above-mentioned long-standing problems through structural innovation. Utility Model Content

[0007] To address the problems of low efficiency and poor effectiveness in existing protective methods for the stirring shaft of beverage making equipment, this utility model designs a disposable protective sleeve. It aims to achieve precise and close protection for the stirring shaft and stirring structure, significantly improving protection efficiency and reliability, while simplifying the operation process and reducing the difficulty and labor intensity for employees.

[0008] A disposable protective sleeve for a stirring shaft of a beverage making machine is characterized by comprising an A-side plastic sheet and a B-side plastic sheet, wherein the two plastic sheets A and B are bonded together to initially define a first cavity corresponding to the stirring shaft of the machine and a second cavity corresponding to the stirring structure of the machine; the two plastic sheets A and B are respectively provided with a first recessed area adapted to the first cavity and a second recessed area adapted to the second cavity; the sleeve also includes a connecting and fixing structure, which is disposed at the bonding point of the two plastic sheets A and B, and by tightly fixing the two plastic sheets A and B together, the first cavity and the second cavity respectively form and maintain a sealed space to wrap the stirring shaft and the stirring structure.

[0009] Preferably, the two plastic sheets A and B are made of food-grade PE material with a thickness of 0.15-0.2mm.

[0010] Preferably, the first recessed area of ​​the first cavity has an outline that matches the shape of the stirring shaft, with a gap between them ≤0.5mm; the second recessed area of ​​the second cavity has an outline that matches the shape of the stirring structure and the stirring shaft section between the stirring structures, so as to completely enclose the stirring structure.

[0011] Preferably, the second recessed area is a hollow cylinder, and the stirring structure of the stirring shaft and the stirring shaft section between the stirring structures are all located inside the hollow cylinder, and the diameter of the stirring shaft section between the stirring structures is smaller than the diameter of the middle section of the second recessed area.

[0012] Preferably, the second recessed area is completely fitted with the stirring structure and the stirring shaft section in the middle section, and the gap at the fitting point is ≤0.5mm.

[0013] Preferably, the connection and fixing structure is any one or more combinations of the following: Buckle structure: The plastic sheet on side A has a cylindrical protrusion, and the plastic sheet on side B has a matching circular recess at the corresponding position. The protrusion is inserted into the recess to achieve fixation. Adhesive strip: The plastic sheet on side A has a pressure-sensitive adhesive strip with release paper. After peeling off the release paper, pressing the A and B sheets together will stick them together.

[0014] Preferably, the bonding area of ​​the two plastic pieces A and B includes a planar bonding area, which is located on the side of the first recessed area and the second recessed area. The connecting and fixing structure is disposed in the planar bonding area. By increasing the bonding area of ​​pieces A and B, the sealing performance of the cavity is further improved.

[0015] Preferably, when the connecting and fixing structure is a snap-fit ​​structure, it is evenly distributed in the planar contact area; 2-4 sets are set along the side of the first recessed area of ​​the first cavity and 2-4 sets are set along the side of the second recessed area of ​​the second cavity to ensure that the first and second cavities are not loose or have gaps after the two plastic sheets are fixed.

[0016] Preferably, it also includes a separation auxiliary structure, which is disposed at one end edge of the two plastic sheets A and B, and is an outwardly extending ear-shaped protrusion with a length of 15-20mm and a width of 8-10mm, so as to facilitate the quick separation of the two attached plastic sheets A and B. Beneficial effects

[0017] 1. Significantly improved protection efficiency: Adopting a specific two-piece design, it directly fits the stirring shaft and stirring structure, eliminating the need for tedious winding and saving a lot of time. The advantages are even more obvious in scenarios with multiple devices, and can significantly reduce the time employees spend operating protective equipment before leaving get off work.

[0018] 2. Significantly Enhanced Protective Reliability: According to the technical solution, the first and second chambers precisely fit the shape of the stirring shaft and stirring structure, with a seamless design that effectively prevents insects, ants, and rodents from crawling in. Multiple connection and fixing structures, such as buckles and adhesive strips, ensure that the protective cover is not easily detached. This contrasts sharply with the plastic film in the background technology, which is prone to gaps, loosening, and lacks an effective fixing structure. It effectively ensures the cleanliness of equipment components during non-working periods, providing a safe and reliable raw material contact environment for beverage preparation.

[0019] 3. Optimized ease of operation: The separation auxiliary structure is designed with outward-extending ear-shaped protrusions, which makes it easy to pull apart the two plastic sheets A and B. It is also easy to remove after use. Moreover, the food-grade PE material is safe and non-toxic. It can be directly discarded after removal without any risk of residual pollution. This solves the problem of easy fragment residue when removing existing plastic films, optimizes the employee operation process, and reduces the cleaning burden.

[0020] 4. Wide range of applications: The protective cover adopts a size-adaptive design, with one size specification corresponding to one diameter specification of stirring shaft and matching stirring structure. Multiple size specifications can be designed to cover different models of equipment according to the stirring shaft diameter and stirring structure specifications of mainstream beverage making equipment. It can be used for various beverage making equipment with stirring shaft and stirring structure, such as milkshake machines and milk tea machines, to meet the diverse needs of different businesses.

[0021] 5. Good cost control: It uses low-cost PE material and is disposable without the need for cleaning or maintenance. Compared with traditional protection methods, it avoids the cost of cleaning equipment and maintenance of protective products, which meets the needs of large-scale use in stores. It effectively controls cost expenditures and improves economic efficiency while ensuring the protective effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0024] Figure 2 for Figure 1 A front view illustration.

[0025] Figure 3 for Figure 1 Top view.

[0026] Figure 4 This is a schematic diagram of the plastic sheet on side B.

[0027] Figure 5 for Figure 4 Top view.

[0028] Figure 6 This is a schematic diagram of the plastic sheet on side A.

[0029] In the diagram, 1 is the main body, 2 is the stirring shaft housing, 3 is the stirring structure housing, 4 is the snap-fit ​​structure, 5 is the separation auxiliary structure, 11 is the plastic sheet on side A, 12 is the plastic sheet on side B, 21 is the recessed area adapted to the stirring shaft, 31 is the recessed area adapted to the stirring structure, 41 is the cylindrical protrusion, and 42 is the circular concave hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] Implementation of the overall structure Material Selection: Food-grade PE (polyethylene) material is used to make the A-side plastic sheet 11 and the B-side plastic sheet 12, with a thickness ranging from 0.15-0.2mm. Here, 0.18mm is used as an example. This thickness gives the plastic sheet both good flexibility for easy handling and sufficient strength to prevent breakage, fully complying with relevant food contact safety standards.

[0032] Body Formation: Two plastic sheets, A and B, are bonded together to form body 1. The outline of body 1 is carefully designed based on the combined shape of the stirring shaft and stirring structure of common beverage making equipment. Taking a common milkshake machine as an example, it presents a long and narrow main body shape, which can fully cover the stirring shaft and stirring structure, providing a basic framework for protection. The two plastic sheets, A and B, are bonded together to initially define the first cavity (stirring shaft receiving part 2) corresponding to the stirring shaft of the equipment and the second cavity (stirring structure receiving part 3) corresponding to the stirring structure of the equipment. The first cavity (stirring shaft receiving part 2) and the second cavity (stirring structure receiving part 3) are a "continuous integrated structure": one end of the first cavity extends to the top of body 1 (for fitting the top of the stirring shaft), and the other end is connected to the second cavity.

[0033] Mixing shaft housing 2: A cavity defined in the middle of two plastic sheets after they are glued together, corresponding to the mixing shaft of the (milkshake machine), used to enclose the main body of the mixing shaft; both plastic sheets A and B have recessed areas 21 adapted to the mixing shaft. For a certain model of milkshake machine, the diameter of its mixing shaft is 8mm. In this case, the radius of the recessed area 21 adapted to the mixing shaft is precisely designed to be 4mm, and the length is set to 200mm according to the length of the section of the mixing shaft that needs to be protected, to ensure a tight fit with the mixing shaft, and the gap between the two is strictly controlled within 0.5mm. (Refer to the attached...) Figure 3-6 The shape and size of the recessed area 21 are clearly defined, allowing for a tight wrapping of the stirring shaft from both sides. The fit between the recessed area 21 of the stirring shaft housing 2 and the stirring shaft is crucial for achieving excellent protection. The precisely matched radius and length, along with minimal gaps, effectively prevent dust, insects, and other contaminants from entering, ensuring the cleanliness of the stirring shaft. This fit is consistent throughout the design of the entire protective sleeve, ensuring reliable protection for the stirring shaft during actual use.

[0034] Based on the diameter of the stirring shaft of different beverage preparation equipment, the radius of the recessed area 21 of the stirring shaft receiving part 2 is designed strictly according to the principle of size adaptation. For example, for a stirring shaft with a diameter of 6mm, the radius of the recessed area 21 is designed to be 3mm; for a stirring shaft with a diameter of 10mm, the radius of the recessed area 21 is designed to be 5mm, ensuring a tight fit with the stirring shaft and eliminating any gaps that insects or ants can penetrate. This precise size adaptation is the foundation for achieving good protective effects and reflects the close fit between the stirring shaft receiving part 2 and the stirring shaft.

[0035] Mixing Structure Receiving Part 3: A cavity defined in the middle of two plastic sheets after they are glued together, corresponding to the area of ​​the whipping blade and mixing blade in the milkshake machine, used to enclose the whipping blade, mixing blade, and the intermediate shaft section between them. For mixing structures such as the whipping blade and mixing blade located below the mixing shaft in the milkshake machine (whipping blade diameter 40mm, mixing blade diameter 35mm, distance between them 25mm), the two plastic sheets A and B are provided with recessed areas 31 adapted to the mixing structure. The contour of the recessed area 31 adapted to the mixing structure is precisely designed according to the outer diameter of the mixing structure and the size of the mixing shaft section between the mixing structures to achieve complete encapsulation and seamless protection of the mixing structure, with the gap strictly controlled within 0.5mm.

[0036] The contour of the recessed area 31 of the mixing structure receiving part 3 is precisely designed to accommodate the outer diameter of the mixing structure and the spacing between the mixing structures in different beverage making equipment. For example, for equipment with a large outer diameter of the mixing structure or different spacing, the size and shape of the recessed area 31 are adjusted accordingly based on the actual dimensions of the mixing structure to ensure effective protection for various mixing structures. In this way, the adaptability between the mixing structure receiving part 3 and different mixing structures is fully demonstrated, meeting diverse protection needs.

[0037] The semi-cylindrical recessed area 21 of the stirring shaft receiving part 2 and the semi-cylindrical recessed area 31 of the stirring structure receiving part 3 are a "continuous integral structure": one end of the recessed area 21 of the stirring shaft receiving part 2 extends to the top of the body 1 (for fitting the top of the stirring shaft), and the other end is connected to the recessed area 31 of the stirring structure receiving part 3 (ensuring that the connection between the stirring shaft and the whipping plate and the stirring plate is completely covered).

[0038] There are two preferred structures for the stirring structure housing 3.

[0039] 1. Hollow Cylindrical Type: The recessed area 31 of the mixing structure receiving part 3 can be designed as a hollow cylinder. For example, for the mixing structure of the milkshake machine mentioned above, the inner diameter of the middle section of the hollow cylindrical recessed area 31 is set to 45mm to ensure that the mixing structure and the mixing shaft section between the mixing structures can be smoothly placed therein. The diameter of the middle section of the recessed area 31 is larger than the diameter of the mixing shaft section between the mixing structures to adapt to the outer diameter of the mixing structure (e.g., the diameter of the whipping sheet is 40mm > the diameter of the mixing shaft is 8mm), ensuring that the recessed area 31 can simultaneously wrap the mixing structure and the gap section of the mixing shaft, avoiding the protective sleeve from breaking due to the outer diameter of the mixing structure being too large. At the same time, the flexibility of the plastic sheet fits the mixing shaft section without any extra gaps.

[0040] 2. Fully Fitted Type: Through high-precision mold manufacturing and advanced production processes, such as high-precision injection molding technology, the recessed area 31 of the mixing structure receiving part 3 is fully fitted with the mixing structure and the intermediate mixing shaft section. During the production process, the mold is finely polished and calibrated to ensure that the recessed area 31 is in close contact with all parts of the mixing structure, further enhancing the tightness and sealing of the protection, effectively resisting dust and biological contamination, and providing more reliable protection for the mixing structure.

[0041] The recessed area 31 of the stirring structure receiving part 3 of the main body 1 is adapted to the stirring structure, taking into full account the shape, size and spacing of each part of the stirring structure. Whether it is a hollow cylindrical type or a fully fitted type, the design aims to achieve the tightest possible enclosure of the stirring structure to prevent the intrusion of external contaminants, which reflects the important role of the tight fit between the components in ensuring the protective effect.

[0042] Multi-size coverage: In actual production, the diameters of the stirring shafts (6mm, 8mm, 10mm, etc.) and the specifications of the stirring structure of mainstream beverage making equipment are comprehensively considered, and multiple sets of protective sleeves in various sizes are designed. By establishing molds of different specifications and adopting standardized production processes, protective sleeves that meet the needs of various beverage making equipment in the market are mass-produced, improving the versatility and practicality of the protective sleeves. This multi-size coverage implementation method is a comprehensive application of the size adaptation principle, ensuring that different models of beverage making equipment can find suitable protective sleeves, reflecting the close adaptation between product design and market demand.

[0043] On the recessed side of the stirring shaft housing 2 and the stirring structure housing 3, a 30mm wide planar structure is provided as a planar bonding area for the two plastic sheets A and B. This planar bonding area not only provides ample installation space for the connection and fixing structure, but also further improves the sealing performance of the cavity by increasing the bonding area of ​​the two plastic sheets, making it a key part to ensure the overall sealing of the protective sleeve.

[0044] Question 1 also includes a connecting and fixing structure, which is set in the planar bonding area of ​​the two plastic sheets A and B, and tightly fixes the two plastic sheets A and B.

[0045] In this embodiment, the connecting and fixing structure adopts a snap-fit ​​structure 4. The flat contact area of ​​the A-side plastic sheet 11 has a cylindrical protrusion 41 with a diameter selected within the range of 2-3 mm and a height selected within the range of 1-1.5 mm; here, a diameter of 2.5 mm and a height of 1.2 mm are used as an example. The corresponding position of the B-side plastic sheet 12 has a circular recess 42 with a diameter of 2.5 mm and a depth of 1.2 mm. During actual installation, three sets of snaps (arranged at the top, middle, and bottom) are evenly arranged along the side flat contact area of ​​the recessed area 21 of the stirring shaft receiving part 2, and three sets of snaps (arranged at the top, middle, and bottom) are evenly arranged along the side flat contact area of ​​the recessed area 31 of the stirring structure receiving part 3. After aligning the A and B plastic sheets with the stirring shaft and stirring structure, the snaps are pressed one by one to accurately embed the cylindrical protrusion 41 into the circular recess 42, achieving a firm fixation of the two plastic sheets. This effectively ensures that the stirring shaft receiving part 2 and the stirring structure receiving part 3 are not loose or have gaps, maintaining a good sealing condition.

[0046] The distribution of the snap-fit ​​structure 4 in the planar contact area is based on considerations of the sealing performance of the stirring shaft housing 2 and the stirring structure housing 3. The evenly distributed snaps can secure the two plastic sheets while ensuring that the entire protective sleeve will not loosen during use due to uneven local stress. This reflects the tight fit between the connecting and fixing structure, the planar contact area, and the cavity structure, jointly ensuring the sealing performance of the protective sleeve.

[0047] Of course, the connecting and fixing structure can also adopt an adhesive strip structure: the flat bonding area of ​​the A-side plastic sheet 11 is provided with a pressure-sensitive adhesive strip with a width of 5-8mm and a thickness of 6mm, featuring release paper. During use, the release paper is slowly peeled off from one end of the flat bonding area, and the flat bonding areas of the A and B plastic sheets are simultaneously aligned and pressed together. The adhesive strip's stickiness ensures a firm bond between the two plastic sheets, guaranteeing a sealed cavity. This method is simple and quick to operate, and effectively guarantees the sealing of the protective sleeve. The width of the adhesive strip and its adaptation to the flat bonding area, as well as its operation during the bonding process, are all designed to achieve coordinated operation with the entire protective sleeve structure. A suitable width ensures sufficient adhesive connection without being too wide, thus avoiding affecting the overall aesthetics and ease of operation of the protective sleeve, demonstrating the compatibility between the adhesive strip as a connecting and fixing structure and the flat bonding area and the overall protective sleeve structure.

[0048] The separation auxiliary structure 5 is located at one edge of the two plastic sheets A and B, and is an outwardly extending ear-shaped protrusion. Its length is 18mm within the range of 15-20mm, and its width is 10mm within the range of 8-10mm. In actual operation, before use, the employee pinches the separation auxiliary structure 5 and gently pulls it to both sides to easily and quickly separate the two attached plastic sheets A and B, preparing for the insertion of the stirring shaft and stirring structure. Before using the equipment the next day, pinch the separation auxiliary structure 5 and perform the corresponding disassembly operation according to the type of connection and fixing structure, and the protective cover can be easily removed and discarded. The size design of the separation auxiliary structure 5 is adapted to the entire operation process of the protective cover. The appropriate length and width facilitate the employee's gripping and operation, ensuring that the separation and installation of the plastic sheets can be completed smoothly without affecting other structures of the protective cover, reflecting its close compatibility with the overall use of the protective cover.

[0049] How to use Preparation: The employee takes out the disposable protective cover from the storage area, pinches the separation auxiliary structure 5 (ear-shaped protrusion) with his / her hand, and gently pulls it to both sides according to the designed operation method. Utilizing the connection relationship between the separation auxiliary structure 5 and the plastic sheet and its own size design, the two plastic sheets A and B can be easily pulled apart, preparing for the subsequent insertion of the stirring shaft and stirring structure.

[0050] Protective Fitting: First, attach the separated plastic sheet 11 on side A close to one side of the stirring shaft. Based on the fit between the stirring shaft receiving part 2 and the stirring structure receiving part 3 and the stirring shaft and stirring structure, ensure that the recessed area 21 of the stirring shaft receiving part on side A accurately fits the surface of the stirring shaft, and the recessed area 31 of the stirring structure receiving part fits the side of the stirring structure. Then, attach the plastic sheet 12 on side B from the other side of the stirring shaft, ensuring that the recessed area of ​​side B accurately engages with the recessed area of ​​side A. By utilizing the fit between the components, complete wrapping of the stirring shaft body and the stirring structure is achieved.

[0051] Fixed seal: After the two plastic sheets A and B are attached, check whether the buckle positions are aligned according to the fitting relationship between the buckle structure 4 and the flat fitting area. Due to the even distribution design of the buckles in the flat fitting area, you only need to press the buckles one by one to make the cylindrical protrusion 41 completely embedded in the circular concave hole 42. Utilizing the fixing principle of the buckle structure 4, ensure that the stirring shaft receiving part 2 and the stirring structure receiving part 3 are sealed without gaps.

[0052] Demolition operation: Before use the next day, employees pinch the separation auxiliary structure 5, and according to the operational compatibility between the separation auxiliary structure 5 and the overall protective cover, pull the separation buckle with appropriate force. Utilizing the detachable design of the buckle structure 4, the cylindrical protrusion 41 is dislodged from the circular concave hole 42, and the protective cover is successfully removed and discarded.

[0053] Effect verification experiment: 1. Biological contamination prevention test: The milkshake machine equipped with the protective cover was placed in a simulated kitchen environment (including ants and cockroaches). After 24 hours, the protective cover was removed and the stirring shaft and stirring structure were observed. No traces of biological crawling were found. In the control group without the protective cover (only wiped clean), 2-3 ants were found attached after 24 hours.

[0054] 2. Dustproof test: The milkshake machine with the protective cover was placed in a dusty environment (concentration 5mg / m³). After 48 hours, the protective cover was removed. The dust content on the surface of the stirring shaft was 0.1mg, while the dust content of the control group (wrapped in plastic film) was 0.8mg, showing an 87.5% improvement in dustproof effect.

[0055] Specific examples of applications other than milkshake machines: Milk tea making equipment: such as the stirring shaft and matching homogenizing blade of a bubble tea machine. After use, it needs to be protected to avoid tea stains and contamination by insects and ants. Smoothie machine: The stainless steel stirring shaft and bottom crushing and stirring blades of the commercial smoothie machine prevent the crushed ice residue from getting damp and breeding bacteria or being crawled on by insects. Commercial Fruit and Vegetable Juicer: Juicer with a stirring shaft and matching fruit and vegetable crushing discs to prevent fruit and vegetable fiber residue from becoming a food source for insects and ants; Yogurt Maker (Industrial Grade): The stirring shaft and side scraping blades of the stirring yogurt maker prevent yogurt residue from contaminating after coagulation; Commercial Soy Milk Maker: The grinding and stirring shaft and grinding blades at the bottom of the freshly ground soy milk maker prevent soy residue from attracting insects.

[0056] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A disposable protective sleeve for the stirring shaft of a beverage making machine, characterized in that, The device includes a plastic sheet A and a plastic sheet B. The two plastic sheets A and B are bonded together to initially define a first cavity corresponding to the stirring shaft of the device and a second cavity corresponding to the stirring structure of the device. The two plastic sheets A and B are respectively provided with a first recessed area adapted to the first cavity and a second recessed area adapted to the second cavity. The device also includes a connecting and fixing structure, which is disposed at the bonding point of the two plastic sheets A and B. By tightly fixing the two plastic sheets A and B, the bonding effect allows the first cavity and the second cavity to form and maintain a sealed space to enclose the stirring shaft and the stirring structure.

2. The disposable protective sleeve for the stirring shaft of a beverage-making machine according to claim 1, characterized in that, The two plastic sheets, A and B, are made of food-grade PE material with a thickness of 0.15-0.2mm.

3. The disposable protective sleeve for the stirring shaft of a beverage-making machine according to claim 1, characterized in that, The first recessed area of ​​the first cavity has an outline that matches the shape of the stirring shaft, with a gap of ≤0.5mm between them; the second recessed area of ​​the second cavity has an outline that matches the shape of the stirring structure and the stirring shaft section between the stirring structures.

4. The disposable protective sleeve for the stirring shaft of a beverage-making machine according to claim 3, characterized in that, The second recessed area is a hollow cylinder. The stirring structure of the stirring shaft and the stirring shaft section between the stirring structures are all located inside the hollow cylinder, and the diameter of the stirring shaft section between the stirring structures is smaller than the diameter of the middle section of the second recessed area.

5. The disposable protective sleeve for the stirring shaft of a beverage-making machine according to claim 3, characterized in that, The second recessed area is completely fitted with the stirring structure and the stirring shaft section in the middle section, with a gap of ≤0.5mm at the fitting point.

6. The disposable protective sleeve for the stirring shaft of a beverage-making machine according to claim 1, characterized in that, The connection and fixing structure is any one or more of the following combinations: Buckle structure: The plastic sheet on side A has a cylindrical protrusion, and the plastic sheet on side B has a matching circular recess at the corresponding position. The protrusion is inserted into the recess to achieve fixation. Adhesive strip: The plastic sheet on side A has a pressure-sensitive adhesive strip with release paper. After peeling off the release paper, pressing the A and B sheets together will stick them together.

7. The disposable protective sleeve for the stirring shaft of a beverage-making machine according to claim 1, characterized in that, The joint between the two plastic sheets A and B includes a planar bonding area, which is located on the side of the first recessed area and the second recessed area. The connecting and fixing structure is disposed in the planar bonding area.

8. The disposable protective sleeve for the stirring shaft of a beverage-making machine according to claim 7, characterized in that, When the connecting and fixing structure is a snap-fit ​​structure, it is evenly distributed in the planar contact area; 2-4 sets are arranged along the side of the first recessed area of ​​the first cavity and 2-4 sets are arranged along the side of the second recessed area of ​​the second cavity.

9. The disposable protective sleeve for the stirring shaft of a beverage-making machine according to claim 1, characterized in that, It also includes a separation auxiliary structure, which is located at one end edge of the two plastic sheets A and B and is an outwardly extending ear-shaped protrusion.

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