A cleanable dosing structure for a milk frother

Abstract

The utility model provides a kind of washable ration powder feeding structure for milk frother, it is related to milk frother technical field, including milk powder box, powder feeding screw rod, transmission assembly and sealing cover;Powder feeding cavity is provided in milk powder box, the upside and downside of powder feeding cavity are respectively provided with powder inlet and powder outlet;The inside of powder feeding cavity on milk powder box is additionally provided with drive cavity, and connecting channel is provided between drive cavity and powder feeding cavity;Transmission assembly is rotatably connected in connecting channel, and transmission assembly is sealed with connecting channel;One end of transmission assembly is drivingly connected with drive cavity, and the other end of transmission assembly is detachably connected with powder feeding screw rod, and rotation of powder feeding screw rod in powder feeding cavity is realized by transmission assembly;Powder feeding cavity outside extends to the outer wall of milk powder box and forms mounting port, and sealing cover is sealingly mounted on mounting port.The utility model has the advantages that the whole powder feeding system is convenient to disassemble, clean and maintain by detachable powder feeding screw rod design.

Description

Technical Field

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

[0002] A formula maker is a household appliance that automatically dispenses formula, controls water temperature, and prepares the formula. It is widely used for preparing infant formula. One of the core components of a formula maker is the formula dispensing mechanism, which accurately delivers the formula from the dispenser to the mixing chamber according to a preset amount.

[0003] Currently, the most common milk powder feeding structures on the market are the segmented metering type and the spiral feeding type. The segmented metering feeding structure usually includes a turntable with multiple powder storage tanks. The rotation of the turntable transports the milk powder from the milk powder hopper to the powder outlet. For example, Chinese patent CN205433363U discloses a milk powder dispensing device for a milk powder machine, which includes a milk powder box, a main shaft, and a turntable. Multiple powder storage tanks are evenly arranged on the turntable, and the rotation of the turntable realizes the quantitative delivery of milk powder.

[0004] Some milk powder feeding machines also use a spiral feeding structure. For example, Chinese patent CN105615661B discloses a milk powder dispensing device for a milk powder feeding machine, which includes a main shaft and a feed cylinder. The main shaft is rotatably connected inside the feed cylinder, and a lower scraper is provided on the outer wall of the lower end of the main shaft. The conveying of milk powder is controlled by the forward and reverse rotation of the main shaft.

[0005] However, the existing formula feeding structure has the following problems:

[0006] 1. Existing milk powder dispensers mostly use a compartmentalized, metered structure with a double-layered scraper, which is complex and inconvenient for disassembly, cleaning, and maintenance. Especially after long-term use, milk powder tends to accumulate in the gaps of the dispensing mechanism, forming clumps, affecting the accuracy of dispensing and hygiene.

[0007] 2. In existing powder feeding structures, the drive chamber and the powder feeding part are often integrated together, which requires the entire mechanism to be disassembled for cleaning, increasing the difficulty of cleaning and making it easy for electrical components to be damaged by water.

[0008] 3. Although the existing powder feeding screw structure has high powder feeding accuracy, it is usually fixedly connected to the drive cavity, which is not convenient for disassembly and cleaning. After long-term use, bacteria can easily grow, affecting the health of infants and young children. Utility Model Content

[0009] The technical problem this invention aims to solve is that the existing milk powder dispensers, with their compartmentalized dispensing and double-layered scraper structure, are inconvenient to disassemble, clean, and maintain. To overcome these shortcomings, this invention provides a detachable powder feeding screw design, making the entire powder feeding system easy to disassemble, clean, and maintain. The powder feeding screw can be directly removed from the outside of the milk powder box through the sealing cap, without disassembling other parts, greatly improving cleaning efficiency.

[0010] To achieve the purpose of this utility model, the following technical solution is adopted:

[0011] A washable, metered powder feeding structure for a formula dispenser includes a powder box, a powder feeding screw, a transmission assembly, and a sealing cap. The powder box has a powder feeding chamber with an inlet and an outlet on its upper and lower sides, respectively. A drive chamber is also located inside the powder feeding chamber on the powder box, and a connecting channel is provided between the drive chamber and the powder feeding chamber. The transmission assembly is rotatably connected to the connecting channel and is sealed to it. One end of the transmission assembly is connected to the drive assembly inside the drive chamber, and the other end is detachably connected to the powder feeding screw, enabling the screw to rotate within the powder feeding chamber. The outer side of the powder feeding chamber extends to the outer wall of the powder box, forming an installation opening. The sealing cap is sealed and installed on the installation opening, limiting the rotation of the powder feeding screw within the powder feeding chamber. This structure adopts a screw-based quantitative powder feeding mechanism. The detachable powder feeding screw design makes the entire powder feeding system easy to disassemble, clean, and maintain. The powder feeding screw can be directly removed from the outside of the milk powder box through the sealing cap without disassembling other parts, which greatly improves cleaning efficiency. In addition, the overall structure is simpler, the maintenance cost is lower, the service life is longer, and the accuracy and stability of quantitative powder feeding are guaranteed.

[0012] Preferably, the transmission assembly includes a transmission shaft, a transmission positioning block, and a transmission gear. The transmission shaft is rotatably connected within the connecting channel. 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 drive mounting chamber and is driven by the drive gear in the drive assembly. The transmission shaft rotates within the connecting channel, while the transmission positioning blocks and transmission gears at both ends engage with the transmission assemblies and drive assemblies on both sides, achieving a quantitative powder feeding effect.

[0013] Preferably, a central column is provided in the middle of the transmission positioning block; several limiting protrusions are evenly distributed circumferentially on the outer peripheral wall of the central column; a positioning slot is provided at the end of the powder feeding screw that mates with the transmission positioning block; and limiting blocks that match the limiting protrusions are evenly distributed circumferentially on the inner peripheral wall of the positioning slot, with the limiting blocks positioned between two adjacent limiting protrusions during insertion. The detachable connection is achieved through the insertion of the transmission positioning block and the positioning slot, facilitating cleaning and maintenance, and providing convenient and quick operation.

[0014] Preferably, the end of the powder feeding screw away from the transmission positioning block is fitted with the inner wall of the sealing cover, thus axially limiting the powder feeding screw between the sealing cover and the transmission positioning block. By axially limiting the powder feeding screw within the powder feeding cavity, displacement of the powder feeding screw during rotation is prevented.

[0015] Preferably, the powder feeding screw is provided with helical threaded blades; the outer peripheral wall of the threaded blades is rotatably engaged with the inner peripheral wall of the powder feeding cavity. The threaded blades further ensure the sealing effect and guarantee the overall quantitative powder feeding accuracy.

[0016] Preferably, the drive shaft is rotatably connected to the connecting channel via a plastic positioning block, and an oil seal is installed on the drive shaft; the outer peripheral wall of the oil seal is in a sealing fit with the inner peripheral wall of the connecting channel. The plastic positioning block further enables rotation, and the oil seal ensures the sealing performance of the system during operation, preventing milk powder leakage.

[0017] Preferably, the powder feeding chamber is arranged horizontally, with the powder inlet located above the inner horizontal end of the powder feeding chamber and the powder outlet located below the outer horizontal end of the powder feeding chamber. This horizontal arrangement facilitates precise quantitative powder feeding by the powder feeding screw.

[0018] Preferably, the milk powder box has a powder storage chamber located above the powder delivery chamber; the powder inlet connects the powder delivery chamber and the powder storage chamber. The powder storage chamber further facilitates the storage of milk powder, and its vertical position facilitates the milk powder falling into the powder delivery chamber.

[0019] Preferably, a lid is also included; the powder storage chamber is located on the top of the milk powder box, and the top of the powder storage chamber is not closed. The lid is installed on the top of the milk powder box and seals the top of the powder storage chamber. The lid facilitates the placement of milk powder into the powder storage chamber for sealed storage.

[0020] In summary, the advantages of this invention are: the use of a screw-type quantitative powder feeding structure; the detachable screw design facilitates disassembly, cleaning, and maintenance of the entire powder feeding system; the screw can be directly removed from the outside of the milk powder box through the sealing cap, without disassembling other parts, greatly improving cleaning efficiency; the transmission component and the screw are connected by a plug-in joint, making disassembly and assembly convenient and quick; the oil seal design ensures the sealing performance of the system during operation, preventing milk powder leakage; compared with existing segmented quantitative and double-layer milk powder scraper structures, this invention has a simpler structure, lower maintenance costs, and a longer service life, while ensuring the accuracy and stability of quantitative powder feeding. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the washable quantitative powder feeding structure for a milk maker according to this utility model.

[0022] Figure 2 This is an exploded view of the washable, quantitative powder feeding structure for a milk maker according to this utility model.

[0023] Figure 3 This is an exploded cross-sectional view of the washable quantitative powder feeding structure for a milk maker according to this utility model.

[0024] Figure 4 This is a cross-sectional view of the milk powder box of this utility model.

[0025] Figure 5 This is an enlarged cross-sectional view of the washable quantitative powder feeding structure of this utility model.

[0026] Figure 6 This is an exploded view of the transmission component and powder feeding screw of this utility model.

[0027] Figure 7 This is a schematic diagram of the powder feeding screw of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Milk powder box; 10. Powder storage chamber; 11. Powder delivery chamber; 111. Powder inlet; 112. Powder outlet; 113. Mounting port; 12. Drive chamber; 13. Connecting channel; 2. Powder delivery screw; 20. Threaded blade; 21. Positioning slot; 22. Limiting block; 3. Transmission assembly; 31. Transmission shaft; 32. Transmission positioning block; 321. Center column; 322. Limiting protrusion; 33. Transmission gear; 34. Plastic positioning block; 35. Oil seal; 4. Sealing cover; 5. Box lid; 6. Drive gear. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 7As shown, a washable, metered powder feeding structure for a milk powder dispenser includes a milk powder box 1, a powder feeding screw 2, a transmission assembly 3, and a sealing cap 4. The milk powder box 1 is cylindrical, and has powder feeding chambers 11 arranged laterally (radially) inside. A powder inlet 111 is located on the upper part of the inner side of the powder feeding chamber 11, and a powder outlet 112 is located on the lower part of the outer side of the powder feeding chamber 11. The powder feeding screw 2 is installed laterally inside the powder feeding chamber 11. The design of the powder feeding chamber 11 allows milk powder to enter from the powder inlet 111, be conveyed by the rotation of the powder feeding screw 2, and finally be discharged from the powder outlet 112. A drive cavity 12 is also provided on the radially inner side of the powder delivery cavity 11 on the milk powder box 1. The drive cavity 12 is a drive groove located on the radially inner side of the powder delivery cavity 11. A drive assembly is provided in the drive groove. The drive assembly is conventionally driven by a motor to rotate a central shaft, which in turn drives a drive gear 6 to rotate. A radially distributed connecting channel 13 is provided between the drive cavity 12 and the powder delivery cavity 11. A transmission assembly 3 is rotatably connected in the connecting channel 13, and the transmission assembly 3 is sealed to the inner circumferential wall of the connecting channel 13. The radially outer end of the transmission assembly 3 is connected to the drive assembly for transmission. The radial inner end of the moving component 3 is detachably connected to the powder feeding screw 2, and drives the powder feeding screw 2 to rotate within the powder feeding chamber 11 via the transmission component 3. The outer side of the powder feeding chamber 11 extends to the outer wall of the milk powder box 1 and forms an installation port 113. The installation port 113 is used to allow the powder feeding screw 2 to be inserted and removed laterally. The sealing cover 4 is installed on the installation port 113 and seals the installation port 113, while limiting the rotation of the powder feeding screw 2 within the powder feeding chamber 11. The design of the sealing cover 4 allows the entire structure to be easily disassembled and cleaned, solving the problem of difficult cleaning of the powder feeding structure in traditional milk maker. The washable quantitative powder feeding structure used in this embodiment of the milk maker achieves the function of quantitative powder feeding by setting up the milk powder box 1, the powder feeding screw 2, the transmission component 3, and the sealing cover 4. The powder feeding chamber 11 inside the milk powder box 1 serves as the powder feeding channel. The powder feeding screw 2 is installed in the powder feeding chamber 11 and rotates to move the milk powder from the powder inlet 111 to the powder outlet 112. The drive assembly inside the drive cavity 12 drives the powder feeding screw 2 to rotate through the transmission assembly 3, thereby achieving the purpose of quantitative powder feeding.

[0035] like Figure 2 and Figure 6As shown, the transmission assembly 3 includes a transmission shaft 31, a transmission positioning block 32, and a transmission gear 33. The transmission shaft 31 is rotatably connected within the connecting channel 13. The transmission positioning block 32 and the transmission gear 33 are respectively fixedly installed at both ends of the transmission shaft 31. The transmission positioning block 32 is located within the powder feeding chamber 11 and is inserted into one end of the powder feeding screw 2. The transmission gear 33 is located within the drive chamber 12 and is driven by the drive gear 6 in the drive assembly. The transmission shaft 31 rotates within the connecting channel 13, while the transmission positioning blocks 32 and the transmission gear 33 at both ends are driven by the transmission assemblies 3 and the drive assembly on both sides, respectively, to achieve a quantitative powder feeding effect. This design allows power to be smoothly transmitted from the drive assembly to the powder feeding screw 2 while ensuring the detachability of the powder feeding screw 2.

[0036] like Figures 2 to 7 As shown, the connection between the transmission positioning block 32 and the powder feeding screw 2 adopts a plug-in design. A central post 321 is provided in the middle of the transmission positioning block 32; several limiting protrusions 322 are evenly distributed circumferentially on the outer peripheral wall of the central post 321; a positioning slot 21 is provided at the end of the powder feeding screw 2 that mates with the transmission positioning block 32; limiting inserts 22 that match the limiting protrusions 322 are evenly distributed circumferentially on the inner peripheral wall of the positioning slot 21. When plugged in, the limiting inserts 22 are located between two adjacent limiting protrusions 322, forming a locking mechanism to prevent loosening during operation. The plug-in connection between the transmission positioning block 32 and the positioning slot 21 achieves a detachable connection, while ensuring the stability of the connection and the reliability of the transmission, facilitating cleaning and maintenance, and making operation convenient and quick.

[0037] like Figures 2 to 6 As shown, the end face of the powder feeding screw 2 away from the transmission positioning block 32 is fitted with the inner wall of the sealing cover 4, thus limiting the powder feeding screw 2 laterally between the sealing cover 4 and the transmission positioning block 32. By laterally limiting the powder feeding screw within the powder feeding cavity, lateral displacement of the screw during rotation is prevented, ensuring accuracy during rotation and further enhancing structural stability. The powder feeding screw 2 is equipped with helical threaded blades 20; the outer peripheral wall of the threaded blades 20 is rotatably fitted with the inner peripheral wall of the powder feeding cavity 11, and the rotational gap between the outer peripheral wall of the threaded blades 20 and the inner peripheral wall of the powder feeding cavity 11 is less than 2mm, preventing milk powder from escaping through the rotational gap, thereby ensuring quantitative accuracy during powder feeding.

[0038] like Figures 2 to 6As shown, the transmission shaft 31 is rotatably connected to the connecting channel 13 via a plastic positioning block 34, and an oil seal 35 is installed on the transmission shaft 31; the outer peripheral wall of the oil seal 35 is sealed to the inner peripheral wall of the connecting channel 13. The rotatable connection of the plastic positioning block 34 to the connecting channel 13 reduces friction and improves transmission efficiency. Furthermore, the oil seal 35 ensures the sealing performance of the system during operation, effectively preventing milk powder from seeping into the drive cavity 12 and protecting the normal operation of the drive assembly.

[0039] As shown in the figure Figure 6 As shown, a powder storage chamber 10 is provided above the powder delivery chamber 11 inside the milk powder box 1, providing sufficient storage space for the milk powder; the powder inlet 111 connects the powder delivery chamber 11 and the powder storage chamber 10. The powder storage chamber 10 further facilitates the storage of milk powder, and at the same time, it utilizes gravity to allow the milk powder to smoothly enter the powder delivery chamber 11 from the powder storage chamber 10, and be quantitatively output under the action of the powder delivery screw 2.

[0040] like Figure 1 and Figure 2 As shown, it also includes a lid 5; the powder storage chamber 10 is located on the top of the milk powder box 1, and the top of the powder storage chamber 10 is not closed. The lid 5 is detachably installed on the top of the milk powder box 1. When the lid 5 is fixed on the top of the milk powder box 1, the lid 5 seals the top of the powder storage chamber 10 to prevent moisture from entering the powder storage chamber 10, thereby facilitating the placement of milk powder into the powder storage chamber 10 for sealed storage and preventing the milk powder from getting damp or overflowing.

[0041] In summary, this embodiment, through its rational structural design, achieves the dual functions of quantitative powder delivery and convenient cleaning, greatly improving the user experience and hygiene of the formula maker. In particular, the detachable connection between the transmission component 3 and the powder delivery screw 2 solves the problem of the difficulty in thoroughly cleaning the powder delivery structure of traditional formula makers, which is especially important for formula makers used by infants and young children.

[0042] In actual use, the user can open the lid 5 and pour the milk powder into the powder storage chamber 10. After starting the drive assembly, the drive gear 6 drives the transmission gear 33 to rotate. The transmission gear 33 drives the transmission positioning block 32 to rotate through the transmission shaft 31. The transmission positioning block 32 then drives the powder feeding screw 2, which is connected to it, to rotate. When the powder feeding screw 2 rotates, its threaded blades 20 push the milk powder that has entered the powder feeding chamber 11 through the powder inlet 111 in the powder storage chamber 10 along the powder feeding chamber 11 to the powder outlet 112, thus achieving quantitative powder feeding.

[0043] When the powder feeding structure needs cleaning, the user can remove the sealing cap 4 and pull the powder feeding screw 2 out of the mounting port 113. Since the powder feeding screw 2 and the transmission positioning block 32 are connected by a plug-in joint, disassembly is very convenient. The removed powder feeding screw 2 can be cleaned separately to thoroughly remove any residual milk powder and ensure hygiene. After cleaning, simply reinsert the powder feeding screw 2 into the transmission positioning block 32 and replace the sealing cap 4.

[0044] The advantages of this utility model are that the structure adopts a screw-based quantitative powder feeding structure. The design of the detachable powder feeding screw 2 makes the entire powder feeding system easy to disassemble, clean and maintain. The powder feeding screw 2 can be directly removed from the outside of the milk powder box 1 through the sealing cover 4 without disassembling other parts, which greatly improves the cleaning efficiency. In addition, the overall structure is simpler, the maintenance cost is lower and the service life is longer, while ensuring the accuracy and stability of quantitative powder feeding.

[0045] 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.

[0046] 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.

[0047] 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 washable, metered powder feeding structure for a formula maker, characterized in that, The system includes a milk powder box (1), a powder feeding screw (2), a transmission assembly (3), and a sealing cap (4). The milk powder box (1) has a powder feeding chamber (11), with an inlet (111) on the upper side and an outlet (112) on the lower side. A drive chamber (12) is also provided on the milk powder box (1) inside the powder feeding chamber (11), and a connecting channel (13) is provided between the drive chamber (12) and the powder feeding chamber (11). The transmission assembly (3) is rotatably connected within the connecting channel (13), and the transmission assembly (3) is connected to the connecting channel (13). The connection channel (13) is sealed and fitted; one end of the transmission component (3) is connected to the drive component in the drive cavity (12), and the other end of the transmission component (3) is detachably connected to the powder feeding screw (2), and the powder feeding screw (2) is rotated in the powder feeding cavity (11) through the transmission component (3); the outer side of the powder feeding cavity (11) extends to the outer wall of the milk powder box (1) and forms an installation port (113), and the sealing cover (4) is sealed and installed on the installation port (113), and the rotation of the powder feeding screw (2) is limited in the powder feeding cavity (11).

2. The washable, quantitative powder feeding structure for a formula maker according to claim 1, characterized in that, The transmission assembly (3) includes a transmission shaft (31), a transmission positioning block (32), and a transmission gear (33). The transmission shaft (31) is rotatably connected in the connecting channel (13). The transmission positioning block (32) and the transmission gear (33) are respectively fixedly installed at both ends of the transmission shaft (31). The transmission positioning block (32) is located in the powder feeding chamber (11) and is inserted into one end of the powder feeding screw (2). The transmission gear (33) is located in the drive chamber (12) and is driven by the drive gear (6) in the drive assembly.

3. The washable, quantitative powder feeding structure for a milk maker according to claim 2, characterized in that, A central column (321) is provided in the middle of the transmission positioning block (32); a number of limiting protrusions (322) are evenly distributed along the circumferential direction on the outer peripheral wall of the central column (321); a positioning slot (21) is provided at one end of the powder feeding screw (2) that cooperates with the transmission positioning block (32); a limiting insert (22) matching the limiting protrusion (322) is evenly distributed along the circumferential direction on the inner peripheral wall of the positioning slot (21), and when inserted, the limiting insert (22) is located between two adjacent limiting protrusions (322).

4. The washable, quantitative powder feeding structure for a milk maker according to claim 2, characterized in that, The end of the powder feeding screw (2) away from the transmission positioning block (32) is matched with the inner wall of the sealing cover (4) to limit the powder feeding screw (2) between the sealing cover (4) and the transmission positioning block (32).

5. The washable, quantitative powder feeding structure for a milk maker according to claim 2, characterized in that, The powder feeding screw (2) is provided with spiral-shaped threaded blades (20); the outer peripheral wall of the threaded blades (20) is in rotational engagement with the inner peripheral wall of the powder feeding cavity (11).

6. The washable, quantitative powder feeding structure for a milk maker according to claim 2, characterized in that, The transmission shaft (31) is rotatably connected to the connecting channel (13) via a plastic positioning block (34), and an oil seal (35) is installed on the transmission shaft (31); the outer peripheral wall of the oil seal (35) is sealed to the inner peripheral wall of the connecting channel (13).

7. The washable, quantitative powder feeding structure for a milk maker according to claim 1, characterized in that, The powder feeding chamber (11) is arranged in a horizontal line, the powder inlet (111) is located above the inner horizontal end of the powder feeding chamber (11), and the powder outlet (112) is located below the outer horizontal end of the powder feeding chamber (11).

8. The washable, quantitative powder feeding structure for a milk maker according to claim 7, characterized in that, The milk powder box (1) has a powder storage chamber (10) located above the powder delivery chamber (11); the powder inlet (111) is connected between the powder delivery chamber (11) and the powder storage chamber (10).

9. The washable, quantitative powder feeding structure for a milk maker according to claim 8, characterized in that, It also includes a lid (5); the powder storage cavity (10) is located on the top of the milk powder box (1), and the top of the powder storage cavity (10) is not closed. The lid (5) is installed on the top of the milk powder box (1) and seals the top of the powder storage cavity (10).

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