Cover body of milk powder box and milk powder box

Abstract

The utility model discloses a cover body of a milk powder box and the milk powder box, and the cover body of the milk powder box comprises a bottom cover, a connecting cover and a top cover which are sequentially arranged from bottom to top; wherein the bottom cover is used for being detachably connected to a box body of the milk powder box, and a feeding opening is formed in the bottom cover; the connecting cover comprises an annular main body part, the middle part of the annular main body part protrudes towards the direction deviating from the bottom cover to form an annular flange, and the annular flange is enclosed to form a discharge port; the annular main body part is rotationally connected to the bottom cover in the transverse direction, so that the discharging opening is communicated with or away from the feeding opening, and the size of the discharging opening is smaller than that of the feeding opening; the top cover is rotationally connected to the connecting cover in the transverse direction, the top cover is sunken corresponding to the annular flange to form a sealing groove, and the annular flange is embedded in the sealing groove so as to seal or open the discharging opening. The cover body of the milk powder box can improve accuracy and convenience of pouring in or out milk powder.

Description

Technical Field

[0001] This application relates to the field of infant and toddler products technology, and in particular to a lid for a milk powder box. Background Technology

[0002] A milk powder box is a container used to store milk powder. It usually consists of a shell and a lid that are connected to each other. The shell is used to store milk powder, and the top of the shell usually has an opening. Milk powder enters the shell through the opening or is poured out of the shell. The lid closes to the opening to seal and preserve the milk powder.

[0003] In existing technology, milk powder containers have only one opening, through which milk powder is dispensed and removed. To make it easier to pour milk powder into the container, the opening is usually made relatively large, and the plane containing the opening is lower than or flush with the top plane of the container. To pour milk powder into a bottle, the container typically needs to be placed over the bottle. However, the large opening makes it difficult to control the amount of milk powder poured out and easily spills milk powder around the outside of the bottle, affecting the user experience.

[0004] The above content is only used to assist in understanding the technical solution of the utility model and does not represent an admission that the above content is prior art. Utility Model Content

[0005] In view of the above problems, this utility model proposes a lid for a milk powder box to improve the accuracy and convenience of pouring or dispensing milk powder.

[0006] To achieve the above objectives, the milk powder box proposed in this utility model includes a bottom cover, a connecting cover, and a top cover arranged sequentially from bottom to top; wherein,

[0007] The bottom cover is detachably connected to the body of the milk powder box, and the bottom cover has a feeding port;

[0008] The connecting cover includes an annular main body, the middle of which protrudes in a direction away from the bottom cover to form an annular flange, which encloses to form a discharge port; the annular main body is rotatably connected to the bottom cover in a transverse direction so that the discharge port is connected to or away from the inlet, and the size of the discharge port is smaller than the size of the inlet;

[0009] The top cover is rotatably connected to the connecting cover about the lateral direction, and the top cover is recessed to form a sealing groove corresponding to the annular flange. The annular flange is embedded in the sealing groove to seal or open the discharge port.

[0010] In one embodiment, the wall surface of the annular body portion near the feed inlet transitions to the annular flange in an arc.

[0011] The curvature of the wall surface of the annular main body near the feed inlet and the annular flange is greater than or equal to 1.3 and less than or equal to 1.6.

[0012] In one embodiment, the area ratio of the inlet to the outlet is greater than or equal to 1.5 and less than or equal to 3.

[0013] In one embodiment, a first sealing ring is provided on the wall surface of the annular main body near the feed inlet, and the first sealing ring is adapted to be embedded in the feed inlet.

[0014] In one embodiment, a second sealing ring is provided on the bottom wall of the sealing groove, and the second sealing ring is adapted to be embedded in the discharge port.

[0015] In one embodiment, the annular main body has a first side and a second side that are laterally opposite each other. The first side is hinged to the top cover and is detachably fixedly connected to the bottom cover. The second side is hinged to the bottom cover and is detachably fixedly connected to the top cover.

[0016] In one embodiment, the first side is provided with a first hook, and the outer side wall of the bottom cover is recessed to form a first groove corresponding to the first hook, and the first hook engages with the first groove.

[0017] In one embodiment, the top cover is provided with a second hook corresponding to the second side, the top edge of the bottom cover is recessed to form a groove, and the peripheral sidewall of the annular main body protrudes laterally from the bottom wall of the groove to form a second slot with the groove, and the second hook engages with the second slot.

[0018] This utility model also proposes a milk powder box, including a box body and a lid of the milk powder box, wherein the bottom cover of the lid is detachably connected to the box body, and a through hole is provided on the top of the box body, the size of which is larger than the size of the discharge port.

[0019] In one embodiment, the top of the box body is provided with a connecting portion, and the bottom cover is detachably connected to the connecting portion;

[0020] The top inner wall of the bottom cover is provided with a protruding ring, which overlaps the top wall of the connecting part, and the inner wall of the protruding ring and the inner wall of the connecting part are smoothly transitioned.

[0021] The lid of this milk powder box comprises a bottom cover, a connecting cover, and a top cover arranged sequentially from bottom to top. The bottom cover is detachably connected to the box body, and the connecting cover is rotatably connected to both the bottom and top covers, effectively giving the milk powder box lid two sub-covers. The connecting cover is used to open the inlet, and the top cover is used to open the outlet. Thus, compared to traditional milk powder boxes that require removing the lid to open the inlet, this embodiment allows users to open the inlet and pour milk powder without removing the lid, improving the convenience of milk powder pouring. Furthermore, the outlet size is smaller than the inlet size, meaning less milk powder is poured out each time. This allows users to more accurately control the milk powder flow, improving pouring precision, reducing spillage, and preventing excessive pouring or spillage around the bottle.

[0022] In addition, the annular flange is a ring-shaped structure that bulges upward in the center of the cap. It is used to slow down the flow rate of the milk powder when it is poured out, and at the same time, it works with the sealing groove to achieve a seal. When the milk powder is poured from the milk powder box into the bottle or cup, the annular flange can overlap the edge of the bottle or cup. The milk powder box can be supported by the bottle or cup to prevent excessive shaking when the hand is tilted, thereby improving the stability of operation and reducing the risk of spillage. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of an embodiment of the milk powder box of this utility model is shown;

[0025] Figure 2 This is an exploded view of the structure of the milk powder box of this utility model;

[0026] Figure 3 This is another exploded view of the structure of the milk powder box of this utility model;

[0027] Figure 4 for Figure 3 Exploded view of the structure of a milk powder box from another angle;

[0028] Figure 5 Diagram showing the milk powder container with the inlet opening in use;

[0029] Figure 6 Diagram showing the milk powder container with the dispensing spout open during use;

[0030] Figure 7This is a diagram showing the milk powder container with the lid fully open in use.

[0031] Explanation of icon numbers:

[0032] label name label name label name 100 milk powder box 12 Connecting cover 128 Second hook 10 The lid of the milk powder box 121 Circular main body 13 Top cover 11 bottom cover 122 Annular flange 131 Sealing groove 111 feed inlet 123 discharge port 132 Second sealing ring 112 First card slot 124 First sealing ring 20 box 113 groove 125 First side 21 Through hole 114 Second slot 126 Second side 22 Connection part 115 convex ring 127 First hook

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies both A and B.

[0037] This utility model proposes a lid for a portable milk powder container 100. The portable milk powder container 100 is a milk powder storage container designed specifically for use when out and about or traveling, aiming to provide a convenient, hygienic, and efficient way to store and retrieve milk powder.

[0038] In this embodiment of the utility model, please refer to Figures 1 to 7The lid of the milk powder box 100 includes a bottom cover 11, a connecting cover 12, and a top cover 13 arranged sequentially from bottom to top. The bottom cover 11 is detachably connected to the box body 20 of the milk powder box 100 and has an inlet 111. The connecting cover 12 has an outlet 123 and is rotatably connected to the top cover 13 so that the outlet 123 is connected to or away from the inlet 111. The size of the outlet 123 is smaller than the size of the inlet 111. The top cover 13 is rotatably connected to the connecting cover 12 so as to seal or open the outlet 123.

[0039] In this embodiment, the lid of the milk powder box 100 includes a bottom cover 11, a connecting cover 12, and a top cover 13 arranged sequentially from bottom to top. The bottom cover 11 is detachably connected to the box body 20 of the milk powder box 100, including but not limited to detachable connection methods such as threaded connection and snap-fit ​​connection. The bottom cover 11 can be made of food-grade plastic, and its shape can be circular or rectangular to adapt to different shapes of box bodies 20. No restrictions are placed on its material or shape. A feeding port 111 is provided on the bottom cover 11 so that milk powder can be poured into the milk powder box 100 through the feeding port 111. The feeding port 111 is usually circular or rectangular, and no restrictions are placed on its shape.

[0040] The connecting cover 12 is located between the bottom cover 11 and the top cover 13, and has a discharge port 123 for dispensing milk powder. The size of the discharge port 123 is smaller than the size of the inlet 111 to facilitate control of the amount of milk powder dispensed. The connecting cover 12 is rotatably connected to the bottom cover 11 to close or open the inlet 111. For example, when the connecting cover 12 is closed to the inlet 111, the discharge port 123 is connected to the inlet 111, and the user can pour milk powder into the bottle through the discharge port 123. When the connecting cover 12 is away from the inlet 111, the discharge port 123 is away from the inlet 111, causing the inlet 111 to be opened, and the user can pour milk powder into the milk powder container 100 through the inlet 111. The rotatable connection between the connecting cover 12 and the bottom cover 11 includes, but is not limited to, hinges and ball joints.

[0041] The top cover 13 is located at the very top of the cover body and is rotatably connected to the connecting cover 12 to seal or open the discharge port 123. The rotatable connection between the top cover 13 and the connecting cover 12 includes, but is not limited to, hinge and ball joint connection.

[0042] In this embodiment, the lid of the milk powder box 100 includes a bottom cover 11, a connecting cover 12, and a top cover 13 arranged sequentially from bottom to top. The bottom cover 11 is detachably connected to the box body 20 of the milk powder box 100. The connecting cover 12 is rotatably connected to both the bottom cover 11 and the top cover 13, effectively giving the milk powder box 100 two sub-covers. The connecting cover 12 is used to open the inlet 111, and the top cover 13 is used to open the outlet 123. Thus, compared to the traditional milk powder box 100 where the lid needs to be removed to open the inlet 111, the milk powder box 100 of this embodiment allows users to open the inlet 111 and pour milk powder into the milk powder box 100 without removing the lid from the box body 20, improving the convenience of milk powder pouring. Secondly, the size of the outlet 123 is smaller than that of the inlet 111, which means that the amount of milk powder poured out each time is smaller. This allows users to more accurately control the flow of milk powder, reduce spillage, and avoid pouring out too much at once or pouring it around the bottle.

[0043] Furthermore, the connecting cover 12 includes an annular body portion 121, the middle of which protrudes away from the bottom cover 11 to form an annular flange 122, which surrounds to form a discharge port 123; the annular body portion 121 is rotatably connected to the bottom cover 11 so that the discharge port 123 is connected to or away from the inlet port 111; the top cover 13 is recessed corresponding to the annular flange 122 to form a sealing groove 131, and the annular flange 122 is embedded in the sealing groove 131 to seal or open the discharge port 123.

[0044] In this embodiment, the annular main body 121 is the main part of the connecting cover 12, and its size is adapted to the size of the feed inlet 111. The annular flange 122 is an annular structure that protrudes upward in the middle of the connecting cover 12, which is used to slow down the flow rate of milk powder when it is poured out, and at the same time, it works with the sealing groove 131 to achieve a seal. Secondly, when milk powder is poured from the milk powder box 100 into a bottle or cup, the annular flange 122 can overlap the edge of the bottle or cup. The milk powder box 100 can be supported by the bottle or cup to avoid excessive shaking when held and tilted, thereby improving the stability of operation and reducing the risk of spillage.

[0045] Furthermore, the wall surface of the annular main body 121 near the feed inlet 111 transitions to the annular flange 122 in an arc; the curvature of the wall surface of the annular main body 121 near the feed inlet 111 and the annular flange 122 is greater than or equal to 1.3 and less than or equal to 1.6.

[0046] In this embodiment, during the milk powder dispensing process, the milk powder needs to pass through the inlet 111, the annular body 121, and then through the annular flange 122 into the bottle or cup. Because the wall surface of the annular body 121 near the inlet 111 and the annular flange 122 are curved, the inner wall surface of the connecting cap 12 is smoother, preventing milk powder from accumulating at the corners, helping to keep the outlet 123 clean, reducing powder residue, and lowering cleaning difficulty. Secondly, because the curvature of the wall surface of the annular body 121 near the inlet 111 and the annular flange 122 is between 1.3 and 1.6, the speed at which the milk powder flows from the inlet 111 to the outlet 123 is more stable, preventing sudden acceleration or blockage. Furthermore, when the milk powder is poured into the bottle, the flow path is controlled, preventing powder dispersion during dispensing, thereby reducing milk powder spillage and improving the accuracy of dispensing.

[0047] If the curvature is too large, it means the transition surface is too gentle, and the milk powder may flow too quickly when poured out, making it difficult to control the amount poured out. This increases the risk of powder splashing and spilling, affecting the user experience. Furthermore, when it overlaps the rim of a bottle or cup, the reduced contact area may make the milk powder container less stable at the bottle opening, increasing the risk of slipping.

[0048] If the curvature is too small, it means that the transition is too steep. When the milk powder flows through the annular body 121 and the annular flange 122, it may stagnate due to the sudden change in the flow path, and easily accumulate at the edge, affecting the smooth pouring of the milk powder.

[0049] In one embodiment, the ratio of the area of ​​the inlet 111 to the area of ​​the outlet 123 is greater than or equal to 1.5 and less than or equal to 3.

[0050] In this embodiment, the area ratio of the inlet 111 to the outlet 123 is between 1.5 and 3. The larger inlet 111 allows the milk powder to be quickly poured into the milk powder box 100, while the smaller outlet 123 can effectively control the output of the milk powder, thereby achieving a good balance between storage and powder dispensing.

[0051] If the ratio is too large, it means that the outlet 123 is relatively small, which may cause the milk powder to flow poorly when poured out, especially when the milk powder is wet, it is more likely to clump at the outlet. This will require the user to shake or tap the milk powder container 100 to pour out the milk powder, affecting the user experience. Furthermore, because the outlet 123 is small, the user may need to tilt the milk powder container 100 for a longer time to pour out enough milk powder, increasing the difficulty of use.

[0052] If the ratio is too small, it means that the area difference between the inlet 111 and the outlet 123 is small, the milk powder is poured out at a faster rate, which is difficult to control precisely and can easily cause milk powder to spill or be poured out in excess.

[0053] In one embodiment, a first sealing ring 124 is provided on the wall surface of the annular main body 121 near the feed inlet 111, and the first sealing ring 124 is adapted to be embedded in the feed inlet 111.

[0054] In this embodiment, when the annular main body 121 covers the inlet 111, due to the influence of manufacturing precision, a gap may exist between the annular main body 121 and the top wall of the bottom cover 11. This gap allows impurities such as air, moisture, dust, and bacteria to enter the interior of the box 20 through the inlet 111, causing the milk powder to become damp or contaminated. Therefore, in this embodiment, a first sealing ring 124 is provided on the wall surface of the annular main body 121 near the inlet 111. The first sealing ring 124 is fitted into the inlet 111 to improve the sealing performance of the milk powder box 100, prevent moisture and other impurities from entering the interior of the box 20, and reduce the risk of the milk powder becoming damp and contaminated.

[0055] It should be noted that the material of the first sealing ring 124 can be rubber, plastic or other materials, and its shape is adapted to the shape of the feed port 111. There are no restrictions on the material and shape.

[0056] In one embodiment, a second sealing ring 132 is provided on the bottom wall of the sealing groove 131, and the second sealing ring 132 is adapted to be embedded in the discharge port 123.

[0057] In this embodiment, the annular flange 122 is embedded in the sealing groove 131. Due to the influence of manufacturing precision, there may be a gap between the bottom wall of the sealing groove 131 and the annular flange 122, allowing impurities such as air, moisture, dust, and bacteria to enter the interior of the box 20 through the discharge port 123, causing the milk powder to become damp or contaminated. Therefore, in this embodiment, a second sealing ring 132 is provided on the bottom wall of the sealing groove 131. The second sealing ring 132 is adapted to be embedded in the discharge port 123 to improve the sealing performance of the milk powder outlet, prevent moisture and other impurities from entering the interior of the box 20, and reduce the risk of the milk powder becoming damp and contaminated.

[0058] Secondly, due to the small size of the milk powder particles, if the seal is not good, milk powder may leak out along the gaps during the pouring process, causing powder accumulation at the connection between the lid and the box 20, and even contaminating the storage environment. The second sealing ring 132 provides an additional barrier to ensure that milk powder does not leak out from the gaps in the outlet 123 when the lid is closed, thus maintaining the cleanliness of the milk powder box 100.

[0059] It should be noted that the material of the second sealing ring 132 can be rubber, plastic or other materials, and its shape is adapted to the shape of the discharge port 123. There are no restrictions on the material and shape.

[0060] In one embodiment, the annular main body 121 has a first side 125 and a second side 126 that are laterally opposite each other. The first side 125 is hinged to the top cover 13 and is detachably fixed to the bottom cover 11. The second side 126 is hinged to the bottom cover 11 and is detachably fixed to the top cover 13.

[0061] In this embodiment, the first side 125 of the annular main body 121 is hinged to the top cover 13 and detachably fixedly connected to the bottom cover 11. The second side 126 is hinged to the bottom cover 11 and detachably fixedly connected to the top cover 13. This symmetrical structure improves the ease of opening and closing, making one-handed operation more convenient. For example, since one side is hinged and the other side is detachably fixed, the user only needs to apply force with one hand to easily lift the connecting cover 12 or the top cover 13, without having to operate with both hands simultaneously, thus improving the convenience of use. This is suitable for scenarios that require quick one-handed opening, such as taking out milk powder while holding a baby with one hand, or when operating other items without having both hands free.

[0062] It should be noted that the detachable fixing connection can be a snap-fit ​​connection, a magnetic connection, or a connection using silicone or rubber sealing and embedding, and there are no restrictions on this.

[0063] Furthermore, the first side 125 is provided with a first hook 127, and the outer side wall of the bottom cover 11 is recessed to form a first groove 112 corresponding to the first hook 127, and the first hook 127 is engaged in the first groove 112.

[0064] In this embodiment, the bottom cover 11 and the connecting cover 12 are detachably and fixedly connected to the first side 125 and the bottom cover 11 through a snap-fit ​​connection. The engagement of the hook and slot ensures a reliable lock between the connecting cover 12 and the bottom cover 11, preventing accidental opening of the connecting cover 12 due to shaking or squeezing. Compared to simple magnetic or friction-based fixing methods, the snap-fit ​​connection provides higher mechanical strength, ensuring it is less prone to loosening during prolonged use. Furthermore, it allows for one-handed operation, and compared to rotary locks or sliding rail connections, the snap-fit ​​connection offers faster opening and closing speeds, making it more suitable for scenarios involving frequent powder dispensing.

[0065] Secondly, the recess on the outer wall of the bottom cover 11 forms the first slot 112, which can be formed without increasing the overall size, achieving a compact design. Compared to protruding buckles, the recessed slot does not take up extra lateral space, making the milk powder container 100 more compact and portable. This is suitable for small milk powder containers 100 or designs that require saving storage space, making them easy to carry and store.

[0066] Furthermore, the top cover 13 is provided with a second hook 128 corresponding to the second side 126, the top edge of the bottom cover 11 is recessed to form a groove 113, the peripheral sidewall of the annular main body 121 protrudes laterally from the bottom wall of the groove 113 to form a second slot 114 with the groove 113, and the second hook 128 is engaged in the second slot 114.

[0067] In this embodiment, the top cover 13 may further include a snap-fit ​​portion surrounding the sealing groove 131. The size of the snap-fit ​​portion is adapted to the size of the annular main body 121 to improve the overall aesthetics. The connecting cover 12 and the top cover 13 are connected by a snap-fit ​​to achieve a detachable and fixed connection between the second side 126 and the top cover 13. The engagement of the hook and the slot ensures a reliable lock between the connecting cover 12 and the bottom cover 11, preventing the connecting cover 12 from being accidentally opened due to shaking or squeezing. Compared to simple magnetic or friction fixing methods, the snap-fit ​​connection provides higher mechanical strength, ensuring that it is not easy to loosen during long-term use.

[0068] Secondly, the top edge of the bottom cover 11 is recessed to form a groove 113, and the peripheral sidewall of the annular main body 121 protrudes laterally from the bottom wall of the groove 113 to form a second slot 114 with the groove 113. In this way, while ensuring the stability of the locking connection, the overall height of the connecting cover 12 is effectively reduced, thereby reducing the external dimensions of the milk powder box 100 and making the cover structure more compact.

[0069] This utility model also proposes a milk powder box 100, which includes a box body 20 and a lid. The specific structure of the lid is as described in the above embodiments. Since the lid of this milk powder box 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The bottom cover 11 of the lid is detachably connected to the box body 20. The top of the box body 20 has a through hole 21, the size of which is larger than the size of the outlet 123, so that milk powder can be poured in or out smoothly. Preferably, the size of the through hole 21 is the same as the size of the inlet 111 to prevent powder from accumulating at the connection between the box body 20 and the lid. The detachable connection methods include, but are not limited to, threaded connection, snap-fit ​​connection, and magnetic connection.

[0070] In one embodiment, the top of the box body 20 is provided with a connecting part 22, and the bottom cover 11 is detachably connected to the connecting part 22; the top inner wall surface of the bottom cover 11 is provided with a protruding ring 115, the protruding ring 115 overlaps the top wall of the connecting part 22, and the inner wall surface of the protruding ring 115 smoothly transitions with the inner wall surface of the connecting part 22.

[0071] In this embodiment, the connecting portion 22 has a ring-shaped structure for detachable connection with the bottom cover 11. The inner wall surface of the connecting portion 22 smoothly transitions with the inner wall surface of the protruding ring 115, i.e., without sharp angles or irregular surfaces. This effectively prevents the accumulation of milk powder, dust, or other substances between the connecting portion 22 and the bottom cover 11, thereby ensuring ease of cleaning after use and improving overall hygiene. Preferably, the inner wall surface of the connecting portion 22 is flush with the inner wall surface of the protruding ring 115 in the longitudinal direction.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A lid for a milk powder box, characterized in that, It includes a bottom cover, a connecting cover, and a top cover arranged from bottom to top; among which, The bottom cover is detachably connected to the body of the milk powder box, and the bottom cover has a feeding port; The connecting cover includes an annular main body, the middle of which protrudes in a direction away from the bottom cover to form an annular flange, which encloses to form a discharge port; the annular main body is rotatably connected to the bottom cover in a transverse direction so that the discharge port is connected to or away from the inlet, and the size of the discharge port is smaller than the size of the inlet; The top cover is rotatably connected to the connecting cover about the lateral direction, and the top cover is recessed to form a sealing groove corresponding to the annular flange. The annular flange is embedded in the sealing groove to seal or open the discharge port.

2. The lid of the milk powder box as described in claim 1, characterized in that, The wall surface of the annular main body near the feed inlet transitions to the annular flange by an arc. The curvature of the wall surface of the annular main body near the feed inlet and the annular flange is greater than or equal to 1.3 and less than or equal to 1.

6.

3. The lid of the milk powder box as described in claim 1, characterized in that, The area ratio of the inlet to the outlet is greater than or equal to 1.5 and less than or equal to 3.

4. The lid of the milk powder box as described in any one of claims 1 to 3, characterized in that, The annular main body has a first sealing ring protruding from the wall near the feed inlet, and the first sealing ring is adapted to be embedded in the feed inlet.

5. The lid of the milk powder box as described in any one of claims 1 to 3, characterized in that, The bottom wall of the sealing groove is provided with a second sealing ring, which is adapted to be embedded in the discharge port.

6. The lid of the milk powder box as described in any one of claims 1 to 3, characterized in that, The annular main body has a first side and a second side that are opposite each other in the lateral direction. The first side is hinged to the top cover and is detachably fixed to the bottom cover. The second side is hinged to the bottom cover and is detachably fixed to the top cover.

7. The lid of the milk powder box as described in claim 6, characterized in that, The first side is provided with a first hook, and the outer side wall of the bottom cover is recessed to form a first groove corresponding to the first hook, and the first hook is engaged with the first groove.

8. The lid of the milk powder box as described in claim 6, characterized in that, The top cover is provided with a second hook corresponding to the second side, the top edge of the bottom cover is recessed to form a groove, and the peripheral sidewall of the annular main body protrudes laterally from the bottom wall of the groove to form a second slot with the groove, and the second hook engages with the second slot.

9. A milk powder container, characterized in that, The container includes a box body and a lid as described in any one of claims 1 to 8, wherein the bottom cover of the lid body is detachably connected to the box body, and a through hole is provided on the top of the box body, wherein the size of the through hole is larger than the size of the discharge port.

10. The milk powder box as described in claim 9, characterized in that, The top of the box body is provided with a connecting part, and the bottom cover is detachably connected to the connecting part; The top inner wall of the bottom cover is provided with a protruding ring, which overlaps the top wall of the connecting part, and the inner wall of the protruding ring and the inner wall of the connecting part are smoothly transitioned.

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