Complementary food machine
By setting up a shaft hole and steam guide channel design in the center of the cup lid in the supplementary food machine, the residence time of steam in the mixing cup is extended, the problem of low steam utilization is solved, efficient food heating and cooking effect is achieved, and user experience is improved.
Patent Information
- Application Number
- CN202422561311.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The steam channel of the existing food supplementary machine is close to the steam outlet hole, which causes the steam to fail to effectively reach the bottom of the mixing cup and contact the food, resulting in low steaming efficiency and affecting the heating effect of the food.
A shaft hole is set in the center of the cup lid as a steam outlet hole, and the distance of the steam channel is extended to extend the residence time of the steam in the mixing cup. Combined with the steam guide channel design, it is guided to the bottom of the mixing cup to enhance steam utilization.
It improves the utilization rate of steam and the heating and cooking efficiency of food, and improves the user's cooking experience and overall usage satisfaction.
Smart Images

Figure CN223275331U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooking equipment, in particular to a food supplement machine. Background Art
[0002] Baby food machines usually have stirring, crushing and steaming functions, and are especially suitable for processing baby food for infants and the elderly, and are widely recognized by consumers.
[0003] The existing baby food machine generally includes a base and a mixing cup. The mixing cup is covered with a cup lid and the cup lid is provided with a steam channel and a steam outlet. A water storage chamber is provided in the base, and steam is generated by heating the heating element. The steam is introduced into the mixing cup through the steam channel to steam the food.
[0004] However, since the steam channel is close to the steam outlet and both are located at the mouth of the blender cup, most of the steam fails to effectively reach the bottom of the blender cup and come into contact with the food before being discharged from the steam outlet, resulting in low steam utilization and poor steaming efficiency, which affects the heating effect of the food. Utility Model Content
[0005] To overcome the shortcomings of the prior art, the present invention provides a baby food maker. The steam outlet is formed by an axial hole in the center of the cup lid. The distance between the steam outlet and the steam channel is long, extending the residence time of the steam after entering the blender cup. This allows the steam to fully contact the food in the blender cup, thereby improving steam utilization and significantly enhancing the heating and cooking efficiency of the food. Furthermore, users can enjoy a more efficient cooking experience during actual use, improving overall user satisfaction.
[0006] The technical solution adopted by the present invention to solve the problem is:
[0007] A baby food machine, comprising:
[0008] The base is provided with a water storage chamber, wherein water in the water storage chamber generates steam after being heated;
[0009] a blending cup, which is detachably mounted in the water storage chamber;
[0010] a cup cover, which is arranged on the blending cup, and a steam channel is provided between the cup cover and the cup wall of the blending cup, respectively communicating with the water storage cavity and the interior of the blending cup;
[0011] An axial hole is also provided at the center of the cup cover, and the axial hole forms a steam outlet. Steam enters the mixing cup through the steam channel, so that food is discharged from the steam outlet after being steamed.
[0012] Furthermore, it further comprises a cup holder, wherein the cup holder is clamped in the water storage cavity, the mixing cup is clamped in the cup holder, and the inner side wall of the cup holder and the outer side wall of the mixing cup form a first steam guide channel;
[0013] The cup cover is covered on the top of the cup body support and is located on the blending cup, and the cup cover and the cup wall of the blending cup form a second steam guide channel with steam guidance, and the first steam guide channel is connected to the second steam guide channel to form the steam channel.
[0014] Furthermore, the inner wall of the cup body holder is provided with a plurality of protrusions, and when the blending cup is clamped in the cup body holder, the outer cup wall of the blending cup abuts against the plurality of protrusions;
[0015] The first steam guide channel is formed between the two protrusions, the inner wall of the cup body support and the outer wall of the stirring cup.
[0016] Furthermore, a recess is provided at the bottom of the cup cover, and when the cup cover is placed on the top of the cup body support, a first gap is formed between the bottom of the cup cover and the top of the mixing cup;
[0017] The recess and the bottom of the cup cover adopt an arc transition and the recess is recessed in the blending cup, and the outer wall of the recess and the inner cup wall of the blending cup form a second gap, the first gap and the second gap are connected and transition in an arc to form the second steam guide channel.
[0018] Furthermore, it also includes a head, the head is provided with a steam exhaust port and a steam exhaust channel connected to the steam exhaust port;
[0019] The machine head is detachably covered on the base, and a third gap is provided between the bottom of the machine head and the top of the cup cover. The third gap forms a steam outlet channel and is connected to the exhaust channel, so that the steam is discharged to the outside after passing through the exhaust channel and the exhaust port in sequence.
[0020] Furthermore, it also includes a heating element, which is arranged in the base and located at the bottom of the water storage chamber to heat the water in the water storage chamber to generate steam.
[0021] Furthermore, the inner wall of the water storage cavity is provided with a circumferentially arranged retaining rib, and when the cup body bracket is clamped in the water storage cavity, the cup body bracket abuts against the retaining rib to achieve position limiting.
[0022] Furthermore, it also includes a sealing assembly, which includes a first sealing ring and a second sealing ring;
[0023] The outer wall of the cup body bracket is provided with a first groove, and the first sealing ring is clamped in the first groove and squeezed by the inner wall of the water storage cavity to achieve sealing between the cup body bracket and the water storage cavity;
[0024] The side wall of the cup cover is provided with a second groove, and the second sealing ring is clamped in the second groove and squeezed by the inner side wall of the cup body support to achieve sealing between the cup cover and the cup body support.
[0025] Furthermore, it also includes a stirring tool, a driving assembly is provided on the machine head, the stirring tool is inserted into the shaft hole and is transmission-connected to the output end of the driving assembly;
[0026] The stirring cutter is further provided with a retaining ring, which is located at the shaft hole to prevent food in the stirring cup from being thrown out of the shaft hole.
[0027] Furthermore, the retaining ring is provided with a convex ring arranged circumferentially around the retaining ring to prevent food in the mixing cup from entering the shaft hole.
[0028] In summary, the present invention has the following technical effects:
[0029] 1. In this new baby food maker, the steam outlet is formed by an axial hole in the center of the cup lid. The distance between the steam outlet and the steam channel is relatively long, which prolongs the residence time of the steam after entering the blender cup, allowing the steam to fully contact the food in the blender cup, thereby improving steam utilization and significantly enhancing the heating and cooking efficiency of the food. At the same time, users can enjoy a more efficient cooking experience during actual use, improving overall user satisfaction.
[0030] 2. In the baby food maker of this invention, the recess and the bottom of the cup lid adopt a circular arc transition design. The first gap is connected to the second gap, forming a second steam guide channel with a steam-guiding function. When steam enters the second steam guide channel through the first steam guide channel, it can be effectively guided to the bottom of the blender cup by the second steam guide channel, ensuring that the steam directly contacts the food at the bottom of the blender cup for efficient steaming. This significantly improves the steam utilization rate and enhances the steam's heating and cooking efficiency for food. At the same time, the circular arc transition reduces steam flow resistance, increases the flow rate of steam into the blender cup, further optimizes the heating and cooking effects, and thus significantly enhances the user experience.
[0031] 3. The food processor of this utility model features a retaining ring on the mixing blade, which is circumferentially surrounded by a raised ring. This raised ring not only effectively prevents food from being thrown out of the shaft hole, but also blocks steam, thereby changing the direction of steam entering the shaft hole and then exiting. This not only slows down the steam's discharge rate, extending the steam's contact time with the food in the mixing cup, but also significantly improves the steam's efficiency in heating and cooking the food. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 This is a schematic diagram of the structure of the supplementary food machine of the present utility model;
[0033] Figure 2 It is a cross-sectional schematic diagram of the utility model supplementary food machine;
[0034] Figure 3 for Figure 2 A magnified schematic diagram of part A in the middle;
[0035] Figure 4 This is an exploded schematic diagram of the supplementary food machine of the present invention;
[0036] Figure 5 This is a structural diagram of the cup body bracket in the supplementary food machine of the present invention.
[0037] The meanings of the reference numerals are as follows:
[0038] 1. Base; 11. Water storage chamber; 111. Clamping rib; 12. Heating element; 2. Machine head; 21. Drive assembly; 22. Exhaust channel; 23. Exhaust port; 24. Third gap; 3. Cup bracket; 31. Bump; 32. First groove; 4. Mixing cup; 5. Cup cover; 51. Shaft hole; 52. Recess; 53. Second groove; 54. First gap; 55. Second gap; 6. Mixing tool; 61. Retaining ring; 611. Protruding ring; 7. First sealing ring; 8. Second sealing ring; 9. Steam channel. DETAILED DESCRIPTION
[0039] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or components referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0042] like Figure 1-5 The illustrated embodiment of the baby food maker comprises a base 1, a blending cup 4 and a cup cover 5. The base 1 is provided with a water storage chamber 11. The water in the water storage chamber 11 generates steam after being heated. The blending cup 4 is detachably mounted in the water storage chamber 11. The cup cover 5 is disposed on the blending cup 4. A steam channel 9 is provided between the cup cover 5 and the cup wall of the blending cup 4, respectively connecting the water storage chamber 11 and the interior of the blending cup 4. An axial hole 51 is also provided in the center of the cup cover 5. The axial hole 51 forms a steam outlet. Steam enters the blending cup 4 through the steam channel 9, so that food is steamed and then discharged from the steam outlet.
[0043] Based on the above structure, when the baby food maker of the present invention is used, the water in the water storage chamber 11 generates steam after being heated, and the steam is introduced into the mixing cup 4 through the steam channel 9 to contact the food inside it, so as to heat and cook the food in the mixing cup 4 and then discharge it through the steam outlet hole in the center of the cup cover 5; since the steam channel 9 is located at the cup cover 5 and the cup wall of the mixing cup 4, the axial hole 51 is located in the center of the cup cover 5 and forms a steam outlet, so the distance between the steam outlet and the steam channel 9 is long, which extends the time the steam stays in the mixing cup 4, thereby improving the contact and utilization rate of the steam with the food in the mixing cup 4, and then improving the efficiency of steam heating and cooking the food, thereby enhancing the user experience.
[0044] See Figure 3-5 The auxiliary food machine of the present invention also includes a cup body bracket 3, which is clamped in the water storage chamber 11, and the stirring cup 4 is clamped in the cup body bracket 3, and the inner wall of the cup body bracket 3 and the outer wall of the stirring cup 4 form a first steam guide channel; the cup cover 5 covers the top of the cup body bracket 3 and is located on the stirring cup 4, and the cup cover 5 and the cup wall of the stirring cup 4 form a second steam guide channel with steam guidance, and the first steam guide channel is connected to the second steam guide channel to form a steam channel 9.
[0045] Furthermore, the inner wall of the cup body holder 3 is provided with a plurality of protrusions 31. When the stirring cup 4 is clamped in the cup body holder 3, the outer cup wall of the stirring cup 4 abuts against the plurality of protrusions 31; a first steam guide channel is formed between the two protrusions 31, the inner wall of the cup body holder 3 and the outer cup wall of the stirring cup 4.
[0046] As a result, the steam generated by the water in the water storage chamber 11 after heating flows upward and enters between the two protrusions 31, the inner wall of the cup body bracket 3 and the outer cup wall of the stirring cup 4 to form a first steam guide channel, so as to enter the steam channel 9 and be introduced into the stirring cup 4 to achieve heating and cooking of the food.
[0047] It should be noted that, in this embodiment, the first steam guide channel is located on the outer wall of the stirring cup 4 and is arranged along the circumference of the stirring cup 4; the protrusion 31 has the function of supporting and fixing the stirring cup 4 when it abuts against the outer cup wall of the stirring cup 4, thereby improving the stability of the stirring cup 4 being clamped on the cup body bracket 3.
[0048] Furthermore, a recess 52 is provided at the bottom of the cup cover 5. When the cup cover 5 is covered on the top of the cup body holder 3, a first gap 54 is provided between the bottom of the cup cover 5 and the top of the stirring cup 4. The recess 52 and the bottom of the cup cover 5 are transitioned in an arc shape, and the recess 52 is recessed in the stirring cup 4. The outer wall of the recess 52 and the inner cup wall of the stirring cup 4 form a second gap 55. The first gap 54 is connected to the second gap 55 and transitions in an arc shape to form a second steam guide channel.
[0049] Specifically, when steam enters the second steam channel through the first steam channel, it is effectively guided to the bottom of the blending cup 4 by the second steam channel, ensuring that the steam directly contacts the food at the bottom of the blending cup 4 for efficient steaming. This significantly improves steam utilization and enhances the steam's heating and cooking efficiency. Furthermore, the arc transition reduces steam flow resistance, increases the flow rate of steam into the blending cup 4, and further optimizes the heating and cooking effects.
[0050] Furthermore, the baby food maker of the present invention also includes a head 2, which is provided with a steam exhaust port 23 and a steam exhaust channel 22 connected to the steam exhaust port 23; the head 2 can be detachably covered on the base 1, and there is a third gap 24 between the bottom of the head 2 and the top of the cup cover 5. The third gap 24 forms a steam outlet channel and is connected to the steam exhaust channel 22, so that the steam is discharged to the outside after passing through the steam exhaust channel 22 and the steam exhaust port 23 in sequence.
[0051] It should be noted that, in this embodiment, the exhaust passage 22 is vertically opened on the machine head 2, and the exhaust port 23 is located at the top of the machine head 2. When the steam in the device is discharged, the exhaust passage 22 in a vertical state can accelerate the discharge of the steam in the exhaust passage 22 according to the characteristic of steam floating upward, thereby ensuring the steam circulation inside the device and improving the heating and cooking of the food inside the mixing cup 4 by the steam.
[0052] Preferably, in this embodiment, a handle (not shown in the figure) is provided on the machine head 2, which facilitates the user to lift the machine head 2 for disassembly, and take out the blending cup 4 or inject water into the water storage chamber 11 to heat and generate steam to cook the food in the blending cup 4.
[0053] See Figure 2 The present invention also includes a heating element 12, which is arranged in the base 1 and located at the bottom of the water storage chamber 11 to heat the water in the water storage chamber 11 to generate steam.
[0054] It should be noted that, in this embodiment, the heating element 12 is a ceramic heating plate. Of course, other devices with heating functions, such as electromagnetic heating, etc., can also be used, and no specific limitation is made here.
[0055] Specifically, the inner wall of the water storage chamber 11 is provided with a circumferentially arranged retaining rib 111. When the cup body bracket 3 is clamped in the water storage chamber 11, the cup body bracket 3 abuts against the retaining rib 111 to achieve positioning, thereby ensuring that the stirring cup 4 is fixed in the position in the water storage chamber 11, and the steam generated by the water in the water storage chamber 11 after heating is efficient in heating and steaming the food. At the same time, the stirring cup 4 is fixed at a certain position in the water storage chamber 11, which allows the steam to smoothly enter the stirring cup 4 to heat and cook the food, ensuring the utilization rate of the steam and avoiding safety hazards of the equipment due to steam pressure.
[0056] Of course, the food supplement machine of the present invention also includes a sealing assembly, which includes a first sealing ring 7 and a second sealing ring 8; a first groove 32 is provided on the outer wall of the cup body holder 3, and the first sealing ring 7 is clamped in the first groove 32 and squeezed by the inner wall of the water storage chamber 11 to achieve sealing between the cup body holder 3 and the water storage chamber 11; a second groove 53 is provided on the side wall of the cup cover 5, and the second sealing ring 8 is clamped in the second groove 53 and squeezed by the inner wall of the cup body holder 3 to achieve sealing between the cup cover 5 and the cup body holder 3, thereby preventing the steam generated in the water storage chamber 11 from being discharged from the connection between the cup body holder 3 and the water storage chamber 11, and the connection between the cup body holder 3 and the cup cover 5, thereby increasing the steam to enter the mixing cup 4 through the steam channel 9 to heat and cook the food in the mixing cup 4, thereby improving the utilization rate of the steam.
[0057] Furthermore, the food supplement machine of the present invention also includes a stirring tool 6. A drive assembly 21 is provided on the machine head 2. The stirring tool 6 is inserted into the shaft hole 51 and is transmission-connected to the output end of the drive assembly 21 to achieve crushing and stirring of the food in the stirring cup 4. At the same time, in this embodiment, the stirring tool 6 is detachably connected to the output shaft of the drive assembly 21, which is convenient for disassembly, cleaning and maintenance of the stirring tool 6; a retaining ring 61 is also provided on the stirring tool 6, which is located at the shaft hole 51 to prevent the food in the stirring cup 4 from being thrown out of the shaft hole 51.
[0058] Specifically, the retaining ring 61 is provided with a convex ring 611 circumferentially arranged around the retaining ring 61 to prevent food in the mixing cup 4 from entering the shaft hole 51 .
[0059] See also Figure 3 As shown by the middle arrow, when in use, when the steam enters the second steam guiding channel through the first steam guiding channel, it can be effectively guided to the bottom of the stirring cup 4 with the help of the second steam guiding channel, ensuring that the steam directly contacts the food at the bottom of the stirring cup 4 to achieve efficient steaming. The stirring tool 6 is provided with a retaining ring 61, and the retaining ring 61 is circumferentially arranged with a convex ring 611. The convex ring 611 can not only effectively prevent the food from being thrown out of the shaft hole 51, but also block the steam, thereby changing the flow direction of the steam entering the shaft hole 51 and being discharged, slowing down the discharge speed of the steam, prolonging the contact time of the steam with the food in the stirring cup 4, and significantly improving the efficiency of steam heating and steaming the food.
[0060] In summary, in the baby food maker of the present invention, the steam outlet is formed by the axial hole 51 provided at the center of the cup cover 5, and the distance between the steam outlet and the steam channel 9 is relatively long, which prolongs the residence time of the steam after entering the mixing cup 4, allowing the steam to fully contact the food in the mixing cup 4, thereby improving the utilization rate of the steam and significantly enhancing the heating and steaming efficiency of the food. At the same time, users can obtain a more efficient cooking experience during actual use, improving overall user satisfaction.
[0061] In the baby food maker of this invention, the recess 52 and the bottom of the cup lid 5 employ a circular arc transition design. The first gap 54 is connected to the second gap 55, forming a second steam-guiding channel that guides steam. When steam enters the second steam-guiding channel through the first steam-guiding channel, it is effectively guided to the bottom of the blending cup 4 by the second steam-guiding channel, ensuring that the steam directly contacts the food at the bottom of the blending cup 4 for efficient steaming. This significantly improves steam utilization and enhances the steam's heating and cooking efficiency. Furthermore, the circular arc transition reduces steam flow resistance, increases the flow rate of steam into the blending cup 4, further optimizes the heating and cooking effects, and thus significantly enhances the user experience.
[0062] In the food processor of the present invention, a retaining ring 61 is provided on the mixing blade 6, and a convex ring 611 is arranged around the retaining ring 61. The convex ring 611 not only effectively prevents food from being thrown out of the shaft hole 51, but also blocks steam, thereby changing the direction of steam entering the shaft hole 51 and then being discharged. This not only slows down the steam discharge speed and prolongs the contact time between the steam and the food in the mixing cup 4, but also significantly improves the efficiency of steam heating and cooking the food.
[0063] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.
[0064] It should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the modules or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0065] In addition, in the description of the present invention, “a plurality of” and “a plurality of” mean two or more, unless otherwise clearly and specifically defined.
[0066] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.
Claims
1. A baby food machine, characterized in that: include: The base is provided with a water storage chamber, wherein water in the water storage chamber generates steam after being heated; a blending cup, which is detachably mounted in the water storage chamber; a cup cover, which is arranged on the blending cup, and a steam channel is provided between the cup cover and the cup wall of the blending cup, respectively communicating with the water storage cavity and the interior of the blending cup; An axial hole is also provided at the center of the cup cover, and the axial hole forms a steam outlet. Steam enters the mixing cup through the steam channel, so that food is discharged from the steam outlet after being steamed.
2. The food supplement machine according to claim 1, characterized in that: The device further comprises a cup holder, wherein the cup holder is clamped in the water storage cavity, the blending cup is clamped in the cup holder, and the inner side wall of the cup holder and the outer side wall of the blending cup form a first steam guide channel; The cup cover is covered on the top of the cup body support and is located on the blending cup, and the cup cover and the cup wall of the blending cup form a second steam guide channel with steam guidance, and the first steam guide channel is connected to the second steam guide channel to form the steam channel.
3. The food supplement machine according to claim 2, characterized in that: The inner wall of the cup body bracket is provided with a plurality of protrusions, and when the blending cup is clamped in the cup body bracket, the outer cup wall of the blending cup abuts against the plurality of protrusions; The first steam guide channel is formed between the two protrusions, the inner wall of the cup body support and the outer wall of the stirring cup.
4. The food supplement machine according to claim 2, characterized in that: The bottom of the cup cover is provided with a recessed portion, and when the cup cover is covered on the top of the cup body support, a first gap is formed between the bottom of the cup cover and the top of the mixing cup; The recess and the bottom of the cup cover adopt an arc transition and the recess is recessed in the blending cup, and the outer wall of the recess and the inner cup wall of the blending cup form a second gap, the first gap and the second gap are connected and transition in an arc to form the second steam guide channel.
5. The food supplement machine according to claim 1, characterized in that: The machine head is provided with a steam exhaust port and a steam exhaust passage connected to the steam exhaust port; The machine head is detachably covered on the base, and a third gap is provided between the bottom of the machine head and the top of the cup cover. The third gap forms a steam outlet channel and is connected to the exhaust channel, so that the steam is discharged to the outside after passing through the exhaust channel and the exhaust port in sequence.
6. The food supplement machine according to claim 1, characterized in that: It also includes a heating element, which is arranged in the base and located at the bottom of the water storage cavity to heat the water in the water storage cavity to generate steam.
7. The food supplement machine according to claim 2, characterized in that: The inner wall of the water storage cavity is provided with a clamping rib arranged along the circumferential direction. When the cup body bracket is clamped in the water storage cavity, the cup body bracket abuts against the clamping rib to achieve position limiting.
8. The food supplement machine according to claim 2, characterized in that: Also included is a sealing assembly, the sealing assembly including a first sealing ring and a second sealing ring; The outer wall of the cup body bracket is provided with a first groove, and the first sealing ring is clamped in the first groove and squeezed by the inner wall of the water storage cavity to achieve sealing between the cup body bracket and the water storage cavity; The side wall of the cup cover is provided with a second groove, and the second sealing ring is clamped in the second groove and squeezed by the inner side wall of the cup body support to achieve sealing between the cup cover and the cup body support.
9. The food supplement machine according to claim 5, characterized in that: It also includes a stirring tool, a driving assembly is provided on the head of the machine, the stirring tool is inserted into the shaft hole and is transmission-connected to the output end of the driving assembly; The stirring cutter is further provided with a retaining ring, which is located at the shaft hole to prevent food in the stirring cup from being thrown out of the shaft hole.
10. The food supplement machine according to claim 9, characterized in that: The retaining ring is provided with a convex ring arranged around the circumference of the retaining ring to prevent food in the mixing cup from entering the shaft hole.