A sealing cover structure of a powder feeding cavity of a milk frothing machine

Abstract

This utility model provides a sealing cover structure for the powder feeding chamber of a milk powder maker, relating to the technical field of milk powder maker technology. It includes a milk powder box, a powder feeding screw, and a sealing cover. The milk powder box has horizontally distributed powder feeding chambers. The powder feeding screw is rotatably connected to the powder feeding chambers, and the outer end of the powder feeding chambers penetrates the outer peripheral wall of the milk powder box to form an installation opening. The sealing cover is disposed on the peripheral wall of the milk powder box and seals the installation opening. A vertical sliding part is provided on the peripheral wall of the milk powder box, communicating with the installation opening. The sealing cover is vertically slidably fitted and detachably connected to the vertical sliding part. A limiting structure is provided between the sealing cover and the milk powder box. The advantages of this utility model are that the vertically installed sealing cover avoids the problem of lateral demolding of the mold, reduces the complexity and cost of mold manufacturing, and increases the convenience of disassembly and assembly. Simultaneously, the sealing cover laterally limits the powder feeding screw, ensuring the transmission stability between it and the stirring drive assembly and preventing axial movement of the powder feeding screw.

Description

Technical Field

[0001] This utility model relates to the field of milk maker technology, and more specifically, to a sealing cover structure for the powder feeding chamber of a milk maker. Background Technology

[0002] With the intelligent development of the maternal and infant market, the rationality and practicality of the structural design of formula makers, as automated equipment for preparing infant formula, are receiving increasing attention. Currently, the sealing lid of the formula container in most formula makers is installed horizontally at the container's mounting opening, a design that has revealed several technical flaws in practical applications.

[0003] From a mold manufacturing perspective, the interlocking structure of the mounting opening needs to meet lateral demolding requirements, leading to complex mold structures. For example, a side core-pulling mechanism is required for demolding, or extremely high precision is required for the angle and barb structure of the interlocking part. These molds are not only difficult to manufacture, but also prone to problems such as flash and deformation during injection molding. Multiple trial moldings and adjustments are necessary to ensure a high pass rate, directly increasing mold development costs and production cycles. Data shows that the manufacturing cost of molds with this type of interlocking structure is about 30%-40% higher than that of conventional vertical demolding structures, and production efficiency is reduced by more than 20%.

[0004] In terms of assembly and use, the horizontally disassembled sealing cap requires users to apply horizontal force to insert or remove it, which is inconvenient to operate, especially in one-handed operation scenarios where it is prone to jamming or falling off. At the same time, the design of the sealing cap protruding from the surface of the milk powder box not only disrupts the overall streamlined appearance of the device, but may also cause structural damage due to collisions during daily use; in addition, the protruding part is prone to accumulating dust and dirt, increasing the difficulty of cleaning, which does not meet the high hygiene standards required for mother and baby products. Utility Model Content

[0005] The technical problem this utility model aims to solve is that the existing sealing caps suffer from high mold costs, inconvenient operation, uneven appearance, and poor sealing reliability due to horizontal disassembly and assembly. To overcome the above-mentioned defects of the prior art, this utility model provides a method that simplifies the mold by vertically disassembling and assembling the sealing cap, reduces production costs, and at the same time improves the ease of installation, sealing reliability, and overall aesthetics of the sealing cap.

[0006] To achieve the purpose of this utility model, the following technical solution is adopted:

[0007] A sealing cover structure for the powder feeding chamber of a milk powder maker includes a milk powder box, a powder feeding screw, and a sealing cover. The milk powder box has horizontally distributed powder feeding chambers. The powder feeding screw is rotatably connected to the powder feeding chambers, and the outer end of each powder feeding chamber penetrates the outer peripheral wall of the milk powder box to form an installation opening. The sealing cover is disposed on the peripheral wall of the milk powder box and seals the installation opening. A vertical sliding part is provided on the peripheral wall of the milk powder box, and the vertical sliding part communicates with the installation opening. The sealing cover is vertically slidably fitted and detachably connected to the vertical sliding part. A limiting structure is provided between the sealing cover and the milk powder box. When the sealing cover is in the limiting position, the sealing cover seals the installation opening and horizontally limits the powder feeding screw within the powder feeding chamber. This sealing cap structure changes the traditional horizontal disassembly and assembly method. The vertically installed sealing cap avoids the problem of horizontal demolding of the mold, reduces the complexity and cost of mold manufacturing, and increases the convenience of disassembly and assembly. At the same time, the sealing cap limits the horizontal movement of the powder feeding screw, ensuring the transmission stability between it and the stirring drive component and preventing the axial movement of the powder feeding screw.

[0008] Preferably, the vertical sliding part is a sealing cover groove with its opening facing downwards, located on the outer peripheral wall of the milk powder box, and the bottom of the sealing cover groove extends to the bottom surface of the milk powder box to form an installation port; the installation port communicates with the bottom of the sealing cover groove; the sealing cover groove is provided with vertically distributed sliding structures; the sealing cover is provided with a sliding fit structure that slides with the sliding structures, and when the sealing cover slides to the top of the sealing cover groove, it is in a limited position and achieves the limiting effect. By using the recessed sealing cover groove in conjunction with the installation port at the bottom, it can be directly demolded vertically, eliminating the need for a complex side core-pulling mechanism, reducing mold costs by approximately 30%-40%, and the bottom of the sealing cover groove communicates with the powder feeding cavity, ensuring precise alignment between the sealing cover and the powder feeding cavity after installation, thus improving sealing reliability.

[0009] Preferably, the sliding structure consists of vertical grooves symmetrically arranged on the left and right sides of the sealing cover groove; the sliding fit structure consists of vertical sliders symmetrically arranged on the left and right sides of the sealing cover, with a damping fit between the vertical sliders and the vertical grooves. The frictional fit between the vertical sliders and the vertical grooves prevents the sealing cover from loosening and falling off, eliminating the need for an additional locking structure, reducing assembly difficulty, and providing moderate frictional resistance. This allows for easy insertion and removal by the user, facilitating cleaning of the powder delivery chamber and meeting the hygiene requirements of baby products.

[0010] Preferably, a rotating positioning hole is provided at the center of the outer end face of the powder feeding screw; a positioning protrusion is provided on the inner wall of the sealing cover corresponding to the position of the rotating positioning hole; when the sealing cover is in the limited position, the positioning protrusion slides into the rotating positioning hole to achieve lateral limitation. The cooperation between the positioning protrusion and the rotating positioning hole can limit the axial movement of the powder feeding screw, ensure the alignment of the transmission axis, and avoid jamming caused by misalignment.

[0011] Preferably, the contact surface of the positioning protrusion is a circular and smooth spherical surface. The spherical structure reduces friction between the positioning protrusion and the rotating positioning hole, allowing for automatic alignment during installation. Even with slight angular deviations, it can slide in smoothly, providing strong compatibility. At the same time, the smooth spherical surface avoids wear caused by rigid contact, extending the service life of the powder feeding screw and the sealing cap.

[0012] Preferably, the powder feeding chamber has a vertically distributed stirring drive chamber connected to its lateral inner side; a stirring drive assembly is installed within the stirring drive chamber; the lateral inner end of the powder feeding screw is drive-connected to the stirring drive assembly, and the powder feeding screw is driven by the stirring drive assembly through a transmission assembly, which includes a transmission shaft, a transmission positioning block, and a transmission gear; the transmission shaft is rotatably connected between the powder feeding chamber and the stirring drive chamber, and the transmission positioning block and the transmission gear are respectively fixedly installed at both ends of the transmission shaft; the transmission positioning block is located within the powder feeding chamber and is inserted into one end of the powder feeding screw; the transmission gear is located within the stirring drive chamber and is driven by the drive gear in the stirring drive assembly; under the limiting position of the sealing cover, the powder feeding screw is laterally limited between the positioning protrusion and the transmission positioning block. The modular design of the transmission assembly facilitates disassembly and maintenance, reducing after-sales maintenance costs, and also makes disassembly and cleaning of the powder feeding screw easier.

[0013] Preferably, the bottom of the sealing cap is provided with a first limiting protrusion protruding laterally inward; the first limiting protrusion is used to limit and cooperate with the powder outlet sealing plate; the bottom of the vertical sliding part is provided with a limiting opening that cooperates with the first limiting protrusion, and the bottom surface of the first limiting protrusion is flush with the bottom surface of the milk powder box to form a smooth transition surface. By restricting the movement range of the powder outlet sealing plate by the first limiting protrusion, the accurate opening and closing state of the powder outlet is ensured, avoiding milk powder leakage or blockage. At the same time, the flush surface between the bottom surface of the first limiting protrusion and the bottom surface of the milk powder box forms a smooth transition surface, eliminating hygiene dead corners, eliminating the risk of powder accumulation during cleaning, and meeting high hygiene standards.

[0014] Preferably, a powder outlet is provided on the lower outer side of the powder delivery chamber. A powder outlet sealing plate is rotatably fitted onto the bottom of the stirring drive assembly, and the powder outlet sealing plate is limited between the milk powder box and the stirring drive assembly by a sealing cover. The outer end of the powder outlet sealing plate is limited between the first limiting protrusion and the powder outlet, and in the closed state, the powder outlet sealing plate and the powder outlet are sealed together. The tight fit between the powder outlet sealing plate and the powder outlet prevents outside air from entering the powder delivery chamber, thus maintaining the freshness of the milk powder.

[0015] Preferably, the bottom of the milk powder box has a second limiting protrusion that protrudes laterally inward and connects with the first limiting protrusion. The first and second limiting protrusions connect to form an arcuate trajectory that cooperates with the powder outlet sealing plate. This arcuate trajectory guides the rotation or sliding of the powder outlet sealing plate, reducing frictional resistance and making the powder outlet opening and closing operation smoother. It also ensures accuracy during movement and avoids powder leakage due to trajectory deviation.

[0016] Preferably, the outer wall of the sealing cap is flush with the outer wall of the milk powder box, forming a smooth transition surface. This structure eliminates the protruding structure of traditional sealing caps, resulting in a simpler and more streamlined overall appearance that aligns with modern home appliance design aesthetics. The flush surface also prevents damage from impacts during daily use, and the absence of protrusions makes it easier for users to hold and move the milk powder dispenser, improving safety.

[0017] In summary, the advantages of this utility model are: the vertical installation structure eliminates the need for a horizontal demolding mechanism, reducing mold manufacturing costs by 30%-40% and increasing production efficiency by over 20%; the sealing cap's inner wall seals against the powder feeding chamber opening to prevent milk powder leakage; the powder feeding screw is doubly limited (positioning protrusion and transmission positioning block) to ensure no axial movement during transmission, improving powder feeding accuracy; the sealing cap is flush with the surface of the milk powder box, eliminating protruding structures, reducing dust accumulation dead corners, making cleaning more convenient, and meeting hygiene standards for maternal and infant products; the streamlined appearance enhances the equipment's aesthetics and grip safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the sealing cover structure of the powder feeding chamber of the milk maker of this utility model.

[0019] Figure 2 This is a schematic diagram of the sealing cover structure (without a sealing cover) of the powder feeding chamber of the milk maker of this utility model.

[0020] Figure 3 This is a cross-sectional view of the sealing cover structure of the powder feeding chamber of the milk maker of this utility model.

[0021] Figure 4 This is a schematic diagram of the sealing cap of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Milk powder box; 10. Sealing cover groove; 11. Installation socket; 12. Vertical slide groove; 13. Limiting port; 14. Second limiting protrusion; 2. Powder feeding screw; 21. Rotation positioning hole; 3. Sealing cover; 30. Vertical slider; 31. Positioning protrusion; 32. First limiting protrusion; 4. Powder feeding chamber; 401. Powder outlet; 41. Powder feeding chamber opening; 5. Stirring drive assembly; 51. Drive gear; 61. Transmission shaft; 62. Transmission positioning block; 63. Transmission gear; 7. Powder outlet sealing plate; 8. Sealing cover plate. Detailed Implementation

[0024] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0026] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

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

[0028] like Figures 1 to 4As shown, a milk powder feeding chamber sealing cover structure for a milk powder maker includes a milk powder box 1, a feeding screw 2, and a sealing cover 3. The milk powder box 1 is cylindrical, and a horizontally distributed feeding chamber 4 is provided inside the milk powder box 1, and the feeding chamber 4 is a horizontally distributed circular cavity. The feeding screw 2 is rotatably connected to the feeding chamber 4, and the outer end of the feeding chamber 4 penetrates through the outer peripheral wall of the milk powder box 1 to form an installation port 41. The sealing cover 3 is provided on the peripheral wall of the milk powder box 1 and seals the installation port 41. In this embodiment, a vertical sliding part is provided on the peripheral wall of the milk powder box 1, and the vertical sliding part communicates with the installation port 41. The sealing cover 3 is vertically slidably fitted and detachably connected to the vertical sliding part, and the outer wall of the sealing cover 3 is aligned with the outer wall of the milk powder box 1 to form a smooth transition surface. By eliminating the protruding structure of the traditional sealing cap, the overall appearance of the device is simpler and smoother, conforming to the aesthetics of modern home appliance design. The flat surface prevents damage from collisions during daily use, and the absence of protrusions makes it easier for users to hold and move the milk powder dispenser, improving safety. A limiting structure is provided between the sealing cap 3 and the milk powder box 1. When the sealing cap 3 is in the limiting position, it seals the installation port 41, and the inner wall of the sealing cap 3 abuts against the outer end of the powder feeding screw 2, thus laterally limiting the powder feeding screw 2 within the powder feeding chamber 4. This sealing cap structure changes the traditional horizontal disassembly method. The vertically installed sealing cap 3 avoids the problem of lateral demolding of the mold, reducing the complexity and cost of mold manufacturing, and increasing the convenience of disassembly and assembly. Simultaneously, the lateral limiting of the powder feeding screw 2 by the sealing cap 3 ensures the transmission stability between it and the stirring drive component 5, preventing axial movement of the powder feeding screw 2.

[0029] like Figures 2 to 4As shown, the vertical sliding part is a recessed sealing cover groove 10 located on the outer peripheral wall of the milk powder box 1; the bottom of the sealing cover groove 10 extends to the bottom surface of the milk powder box 1 to form an installation port 11; the installation port 41 communicates with the bottom of the sealing cover groove 10; the sealing cover groove 10 is provided with vertically distributed sliding structures; the sealing cover 3 is provided with a sliding fit structure that engages with the sliding structures, and when the sealing cover 3 slides to the top of the sealing cover groove 10, it is in a limited position and achieves the limit. By using the recessed sealing cover groove 10 in conjunction with the installation port 11 at the bottom, it can be directly demolded vertically without the need for a complex side core pulling mechanism, reducing mold costs by about 30%-40%, and by connecting the bottom of the sealing cover groove 10 to the installation port 41, it is ensured that the sealing cover 3 is precisely aligned with the installation port 41 after installation, improving sealing reliability. The sliding structure consists of vertical grooves 12 symmetrically arranged on both sides of the sealing cover groove 10; the sliding engagement structure consists of vertical sliders 30 symmetrically arranged on both sides of the sealing cover 3, with damping engagement between the vertical sliders 30 and the vertical grooves 12, creating a certain frictional resistance. The frictional engagement between the vertical sliders 30 and the vertical grooves 12 prevents the sealing cover 3 from loosening and falling off, eliminating the need for an additional locking structure, reducing assembly difficulty, and providing moderate frictional resistance. Users can easily insert and remove the cover, facilitating cleaning of the powder delivery chamber 4, meeting the hygiene requirements of baby products.

[0030] like Figure 3 and Figure 4 As shown, a rotating positioning hole 21 is provided at the center of the outer end face of the powder feeding screw 2; a positioning protrusion 31 is provided on the inner wall of the sealing cover 3 corresponding to the position of the rotating positioning hole 21; when the sealing cover 3 is installed on the vertical sliding part of the milk powder box 1 and the sealing cover 3 is in the limited position, the positioning protrusion 31 slides into the rotating positioning hole 21. The cooperation between the positioning protrusion 31 and the rotating positioning hole 21 can restrict the axial movement of the powder feeding screw 2, ensuring that it is consistent with the transmission axis of the stirring drive assembly 5, and avoiding jamming caused by misalignment. The contact surface of the positioning protrusion 31 is a circular and smooth spherical surface. The spherical structure reduces the friction between the positioning protrusion 31 and the rotating positioning hole 21, and can automatically align during installation. Even with slight angular deviations, it can slide in smoothly, with strong compatibility. At the same time, the smooth spherical surface avoids wear caused by rigid contact, extending the service life of the powder feeding screw 2 and the sealing cover 3.

[0031] like Figure 3As shown, the powder feeding chamber 4 has vertically distributed stirring drive chambers connected to its transverse inner side; stirring drive assembly 5 is installed inside the stirring drive chamber; the transverse inner end of the powder feeding screw 2 is connected to the stirring drive assembly 5 for transmission, and the powder feeding screw 2 is connected to the stirring drive assembly 5 for transmission through a transmission assembly, which includes a transmission shaft 61, a transmission positioning block 62, and a transmission gear 63; the transmission shaft 61 is rotatably connected between the powder feeding chamber 4 and the stirring drive chamber, and the transmission shaft 61 is rotatably connected to the connecting channel between the powder feeding chamber 4 and the stirring drive chamber through a plastic positioning block, and an oil seal is installed on the transmission shaft 61; the outer peripheral wall of the oil seal is sealed to the inner peripheral wall of the connecting channel. The transmission positioning block 62 and the transmission gear 63 are respectively fixedly installed at both ends of the transmission shaft 61. The transmission positioning block 62 is located in the powder feeding chamber 4 and is inserted into one end of the powder feeding screw 2. The transmission gear 63 is located in the stirring drive chamber and is driven by the drive gear 51 in the stirring drive assembly 5. Under the limiting of the sealing cover 3, the powder feeding screw 2 is laterally limited between the positioning protrusion 31 and the transmission positioning block 62. The modular design of the transmission assembly facilitates disassembly and maintenance, reduces after-sales maintenance costs, and also facilitates the disassembly and cleaning of the powder feeding screw 2.

[0032] like Figures 1 to 4 As shown, the bottom of the sealing cap 3 is provided with a first limiting protrusion 32 protruding inward laterally; the first limiting protrusion 32 is used to limit and cooperate with the powder outlet sealing plate 7; the bottom of the vertical sliding part is provided with a limiting opening 13 that cooperates with the first limiting protrusion 32, and the bottom surface of the first limiting protrusion 32 is flush with the bottom surface of the milk powder box 1 to form a smooth transition surface. By restricting the movement range of the powder outlet sealing plate 7 by the first limiting protrusion 32, the opening and closing state of the powder outlet 401 is ensured to be accurate, avoiding milk powder leakage or blockage. At the same time, the bottom surface of the first limiting protrusion 32 is flush with the bottom surface of the milk powder box 1 to form a smooth transition surface, eliminating hygiene dead corners, eliminating the risk of powder accumulation during cleaning, and meeting high hygiene standards. A powder outlet 401 is provided on the lower outer side of the powder delivery chamber 4. A powder outlet sealing plate 7 is rotatably fitted onto the bottom of the stirring drive assembly 5, and the powder outlet sealing plate 7 is limited between the milk powder box 1 and the stirring drive assembly 5 by a sealing cover plate 8. The outer end of the powder outlet sealing plate 7 is limited between the first limiting protrusion 32 and the powder outlet 401, and in the closed state, the powder outlet sealing plate 7 and the powder outlet 401 are sealed together. The tight fit between the powder outlet sealing plate 7 and the powder outlet 401 can prevent outside air from entering the powder delivery chamber 4 and maintain the freshness of the milk powder.

[0033] like Figures 1 to 4As shown, the bottom interior of the milk powder box 1 has a second limiting protrusion 14 that protrudes laterally inward and connects with the first limiting protrusion 32. The first limiting protrusion 32 and the second limiting protrusion 14 connect to form an arc trajectory that cooperates with the powder outlet sealing plate 7. The arc trajectory provides guidance for the rotation or sliding of the powder outlet sealing plate 7, reduces frictional resistance, makes the operation of the powder outlet 401 smoother, and also ensures the accuracy of the movement process, avoiding powder leakage due to trajectory deviation.

[0034] This utility model has the following four advantages:

[0035] 1. Reduced mold costs: The vertical installation structure eliminates the need for a horizontal demolding mechanism, reducing mold manufacturing costs by 30%-40% and increasing production efficiency by more than 20%.

[0036] 2. Improved ease of operation: The vertical insertion and removal method conforms to ergonomics, allowing for easy installation with one hand, avoiding jamming and detachment, and improving installation efficiency.

[0037] 3. Stable sealing and transmission: The inner wall of the sealing cover 3 is sealed to the installation port 41 to prevent milk powder leakage; the powder feeding screw 2 is double-limited (positioning protrusion 31 and transmission positioning block 62) to ensure no axial movement during transmission and improve powder feeding accuracy.

[0038] 4. Appearance and hygiene optimization: The sealing lid 3 is flush with the surface of the milk powder box 1, eliminating protruding structures, reducing dust accumulation dead corners, making cleaning more convenient, and meeting the hygiene standards for maternal and infant products; the streamlined appearance enhances the aesthetics of the device and the safety of holding it.

[0039] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0040] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sealing cover structure of a milk powder feeding cavity of a milk frothing machine, comprising a milk powder box (1), a milk powder feeding screw (2) and a sealing cover (3); the milk powder box (1) is provided with a transversely distributed milk powder feeding cavity (4); the milk powder feeding screw (2) is rotationally connected in the milk powder feeding cavity (4), the outer end of the milk powder feeding cavity (4) penetrates the peripheral wall of the milk powder box (1) to form a mounting port (41), and the sealing cover (3) is arranged on the peripheral wall of the milk powder box (1) and blocks the mounting port (41), characterized in that, The milk powder box (1) has a vertical sliding part on its peripheral wall. The vertical sliding part is connected to the mounting port (41). The sealing cover (3) is vertically slidably fitted and detachably connected to the vertical sliding part. A limiting structure is provided between the sealing cover (3) and the milk powder box (1). When the sealing cover (3) is in the limiting position, the sealing cover (3) seals the mounting port (41) and limits the powder feeding screw (2) laterally in the powder feeding cavity (4) through the sealing cover (3).

2. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 1, characterized in that, The vertical sliding part is a sealing cover groove (10) with its opening facing downward on the outer peripheral wall of the milk powder box (1), and the bottom of the sealing cover groove (10) extends to the bottom surface of the milk powder box (1) to form an installation port (11); the installation port (41) is connected to the bottom of the sealing cover groove (10); the sealing cover groove (10) is provided with vertically distributed sliding structures; the sealing cover (3) is provided with a sliding fit structure that slides with the sliding structure, and when the sealing cover (3) slides to the top of the sealing cover groove (10), it is in a limited position and achieves the limit.

3. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 2, characterized in that, The sliding structure is a vertical sliding groove (12) symmetrically arranged on the left and right sides of the sealing cover groove (10); the sliding fit structure is a vertical slider (30) symmetrically arranged on the left and right sides of the sealing cover (3), and the vertical slider (30) and the vertical sliding groove (12) are damped together.

4. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 1, characterized in that, The powder feeding screw (2) has a rotating positioning hole (21) at the center of its outer end face; the inner wall of the sealing cover (3) has a positioning protrusion (31) corresponding to the rotating positioning hole (21); when the sealing cover (3) is in the limiting position, the positioning protrusion (31) slides into the rotating positioning hole (21) to achieve lateral limiting.

5. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 4, characterized in that, The contact surface of the positioning protrusion (31) is a circular and smooth spherical surface.

6. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 4 or 5, characterized in that, The powder feeding chamber (4) has vertically distributed stirring drive chambers connected to its transverse inner side; a stirring drive assembly (5) is provided inside the stirring drive chamber; the transverse inner end of the powder feeding screw (2) is connected to the stirring drive assembly (5) for transmission, and the powder feeding screw (2) is connected to the stirring drive assembly (5) for transmission through a transmission assembly, which includes a transmission shaft (61), a transmission positioning block (62), and a transmission gear (63); the transmission shaft (61) is rotatably connected between the powder feeding chamber (4) and the stirring drive chamber. Between them, the transmission positioning block (62) and the transmission gear (63) are respectively fixedly installed at both ends of the transmission shaft (61). The transmission positioning block (62) is located in the powder feeding chamber (4) and is inserted into one end of the powder feeding screw (2). The transmission gear (63) is located in the stirring drive chamber and is driven by the drive gear (51) in the stirring drive assembly (5). Under the limitation of the sealing cover (3), the powder feeding screw (2) is laterally limited between the positioning protrusion (31) and the transmission positioning block (62).

7. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 6, characterized in that, The bottom of the sealing cover (3) is provided with a first limiting protrusion (32) that protrudes inward laterally; the first limiting protrusion (32) is used to limit and cooperate with the powder outlet sealing plate (7); the bottom of the vertical sliding part is provided with a limiting opening (13) that cooperates with the first limiting protrusion (32), and the bottom surface of the first limiting protrusion (32) is flush with the bottom surface of the milk powder box (1) to form a smooth transition surface.

8. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 7, characterized in that, The powder delivery chamber (4) has a powder outlet (401) on its lower outer end. The bottom of the stirring drive assembly (5) is fitted with a powder outlet sealing plate (7), and the powder outlet sealing plate (7) is limited between the milk powder box (1) and the stirring drive assembly (5) by a sealing cover plate (8). The outer end of the powder outlet sealing plate (7) is limited between the first limiting protrusion (32) and the powder outlet (401), and in the closed state, the powder outlet sealing plate (7) and the powder outlet (401) are sealed together.

9. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 8, characterized in that, The bottom of the milk powder box (1) is provided with a second limiting protrusion (14) that protrudes inward horizontally and connects with the first limiting protrusion (32). The first limiting protrusion (32) and the second limiting protrusion (14) are connected to form an arc trajectory that cooperates with the powder outlet sealing plate (7).

10. The sealing cover structure of the powder feeding chamber of the milk maker according to claim 1, characterized in that, The outer wall of the sealing cap (3) is aligned with the outer wall of the milk powder box (1) to form a smooth transition surface.

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