Food processor

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a food processor which comprises a smashing cup, a motor located below the smashing cup, a smashing cover installed in the smashing cup and a smashing cutter arranged in the smashing cover, the motor is connected with a transmission shaft, and the transmission shaft penetrates through the bottom wall of the smashing cup and extends into the smashing cup. The smashing cover comprises a cover bottom wall and a cover side wall, the smashing cutter is installed on the cover bottom wall and rotates relative to the cover bottom wall, the cover side wall surrounds the periphery of the smashing cutter, a matching part in transmission connection with the transmission shaft is integrally formed on the smashing cutter, and the matching part is rotationally connected with the cover bottom wall so that the transmission shaft can drive the smashing cutter to rotate relative to the smashing cover. And the crushing cover drives the crushing cutter to be detachable relative to the crushing cup. The smashing cutter is safe and convenient to disassemble and assemble, the smashing cutter and the transmission shaft are stably connected, and the structure is reliable.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a food processing machine. Background Technology

[0002] Patent CN102067970B discloses a soymilk maker, including a top-opening container for holding soymilk, a motor serving as the power source, the motor housing, and an output shaft. The motor housing extends into the container to form an extension, and a blade holder is movably connected to this extension. The blade holder has pulverizing blades, which are coupled to the output shaft. Because the blade holder is movably connected, users can freely assemble and replace the appropriate pulverizing blades as needed. However, when handling or installing the blade holder, users need to invert the maker head (i.e., the motor housing) with one hand and use the other hand to hold the blade holder for disassembly and assembly. The heavy maker head already makes disassembly and assembly laborious and inconvenient. Furthermore, the exposed pulverizing blades on the blade holder pose a risk of cutting the user, resulting in hand injuries and posing a significant safety hazard.

[0003] During the research and development process, the applicant filed a patent with publication number CN208192978U, disclosing a soymilk maker and its grinding device. The grinding device includes a grinding cover, grinding blades, and a rotating shaft. The grinding blades are located inside the grinding cover and rotatably mounted on it, and are located at the end of the rotating shaft, with the grinding blades and rotating shaft being detachably connected. This design allows the grinding blades to be removed along with the grinding cover and separated from the rotating shaft, while also preventing the grinding blades from scratching the user, thus improving safety. However, in this design, a connecting rod is horizontally placed inside the grinding cover, and the connecting rod has mounting holes on it. The grinding blades are rotatably mounted at these mounting holes. Due to the slender and long connecting rod, its structural stability is poor. After long-term use, the vibration from the rotating grinding blades is transmitted to the connecting rod, causing excessive stress on it. Furthermore, the rotating material can impact the connecting rod, leading to its breakage, rendering the grinding cover and grinding blades unusable, resulting in a short service life.

[0004] In addition, the applicant has also found that, whether it is the assembly and disassembly component formed by assembling the pulverizer blade with the blade holder or the assembly and disassembly component formed by assembling the pulverizer blade with the pulverizer cover, the pulverizer blade itself is very thin. Since the pulverizer blade needs to be installed and matched with the pulverizer cover and also needs to be connected to the drive shaft, the existing direct connection between the pulverizer blade and the drive shaft will result in large rotational wobble of the pulverizer blade and unstable connection between the pulverizer blade and the drive shaft. Even with the help of connectors, the installation is complicated, the installation tolerance is large, and the problem of poor connection stability still exists. Utility Model Content

[0005] This utility model provides a food processing machine that, in addition to solving the problems of laborious disassembly and assembly of the crushing blade and the significant safety hazards in the prior art, further addresses the technical issues of low structural strength and poor connection stability of the disassembly and assembly components.

[0006] The technical solution adopted in this utility model is as follows:

[0007] This utility model provides a food processing machine, including a grinding cup, a motor located below the grinding cup, a grinding cover installed inside the grinding cup, and a grinding blade disposed inside the grinding cover. The motor is connected to a drive shaft, which extends through the bottom wall of the grinding cup into the grinding cup. The grinding cover includes a bottom wall and a side wall. The grinding blade is mounted on the bottom wall and rotates relative to the bottom wall. The side wall surrounds the outer periphery of the grinding blade. The grinding blade has an integrally formed mating part that is driven and connected to the drive shaft. The mating part is rotatably connected to the bottom wall, so that the drive shaft drives the grinding blade to rotate relative to the grinding cover. The grinding cover and the grinding blade are detachable together relative to the grinding cup.

[0008] This utility model provides a food processing machine, including a crushing hood and a crushing blade disposed within the crushing hood. The crushing hood includes a bottom wall and side walls, and the crushing blade is mounted on the bottom wall. In other words, the bottom wall provides comprehensive and large-area support for the crushing blade, enabling a reliable rotatable connection between the crushing blade and the crushing hood. This ensures stable installation and avoids the breakage and scrapping problems caused by traditional installations using connecting rods, resulting in a long service life and reliable structure. Furthermore, a mating part integrally formed on the crushing blade for transmission connection with the drive shaft is rotatably connected to the bottom wall. This integrally formed mating part achieves an intermediate connection, increasing the mating height and contact area compared to a direct connection between the crushing blade and the drive shaft. This increases the connection stability between the drive shaft and the crushing blade, preventing severe swaying during blade rotation and ensuring stable transmission between the crushing blade and the drive shaft. Because the mating part is integrally formed with the crushing blade, manual assembly is unnecessary, reducing tolerances and improving precision, further ensuring stable transmission between the crushing blade and the drive shaft. Furthermore, the rotatable connection between the mating part and the bottom wall of the cover ensures a stable connection between the pulverizing blade and the pulverizing cover. The pulverizing cover, along with the pulverizing blade, is detachable relative to the pulverizing cup, facilitating thorough cleaning or flexible blade replacement by the user, thus enhancing ease of use. Because the side wall of the cover surrounds the pulverizing blade, it prevents the blade from cutting the user during disassembly and assembly, improving safety. The pulverizing cover concentrates the material, allowing it to collide fully with the pulverizing blade, improving the fineness and efficiency of the pulverization.

[0009] In a preferred embodiment, the inner bottom wall of the grinding cup is provided with a boss, the drive shaft passes through the boss and extends into the grinding cup, the bottom wall of the cover includes a support part that fits against the inner bottom wall of the grinding cup, a limiting part that fits against the boss, and a mounting part located above the boss and connected to the limiting part, the mating part being rotatably connected to the mounting part.

[0010] Because the inner bottom wall of the grinding cup has a boss, and a bearing is installed in the boss, the drive shaft extends into the grinding cup through the boss. That is, the inner bottom wall of the grinding cover is not smooth. If the grinding cover is placed in the grinding cup, a cavity may be formed between the grinding cover, the inner bottom wall of the grinding cup, and the boss. On the one hand, the limiting between the grinding cover and the inner bottom wall of the grinding cup is unreliable, and the grinding cover may rotate or shift. On the other hand, the bottom wall of the grinding cover may seal the cavity. During the heating process, the air in the cavity expands due to heat, which may be dangerous or affect the installation stability of the grinding cover. Therefore, preferably, the bottom wall of the cover includes a support portion that fits against the inner bottom wall of the grinding cup, a limiting portion that fits against the boss, and a mounting portion disposed on the limiting portion. The mating portion is rotatably connected to the mounting portion. By having the support portion and the limiting portion fit against the inner bottom wall of the grinding cup and the boss respectively, the friction is increased, preventing the grinding cover from rotating or moving, achieving good positioning between the grinding cover and the grinding cup. At the same time, it avoids the formation of a sealed cavity between the bottom wall of the cover and the inner bottom wall of the grinding cup, ensuring pressure balance and improving safety in use.

[0011] In a preferred embodiment, the bottom wall of the cover includes a mounting portion surrounding the outer periphery of the mating portion. One of the mating portion and the mounting portion is provided with an annular groove, and the other is provided with an annular rib. The annular rib is riveted to and slidably engaged with the annular groove.

[0012] By using a combination of ring grooves and ring ribs, the crushing blade is directly riveted to the bottom wall of the crushing hood through the mating part, and can rotate relative to the crushing hood. It does not require complicated installation procedures, the installation method is simple, the structure is simple, and the structure can be reliably and durable even when in a liquid environment for a long time, saving maintenance trouble.

[0013] In a preferred embodiment, the mating part is a self-lubricating connector integrally injection molded with the crushing blade;

[0014] Alternatively, the inner wall of the annular groove may be provided with balls or protrusions that slide in cooperation with the annular rib.

[0015] By setting the mating part as a self-lubricating connector that is injection molded into the crushing blade, a self-lubricating layer is generated when the ring rib and the ring groove slide together, thereby reducing dynamic friction; setting balls or protrusions also reduces the dynamic friction between the crushing blade and the crushing cover, making the sliding fit between the ring rib and the ring groove smoother.

[0016] In a preferred embodiment, the bottom wall of the cover includes a mounting portion surrounding the outer periphery of the mating portion, a bearing is disposed within the mounting portion, and the mating portion is fitted onto the bearing.

[0017] More preferably, the bearing includes an inner ring and an outer ring, the inner wall of the mounting portion is provided with a limiting groove, the outer ring is embedded in the limiting groove, and the mating portion passes through the inner ring and is interference-fitted with the inner ring.

[0018] By incorporating bearings, wear caused by dynamic friction between the pulverizing blades and the pulverizing shroud can be reduced, extending service life and ensuring structural reliability.

[0019] By setting a limiting groove on the inner wall of the mounting part, the bearing is fitted into the limiting groove by means of the outer ring, and the bearing and the crushing cover are well fixed. Then, when the mating part and the inner ring are interference fit, the crushing blade, bearing and crushing cover are firmly connected, and the structural stability is improved.

[0020] In a preferred embodiment, the pulverizing cup includes a cup body and a cup lid, and the pulverizing cover is pressed against the inner bottom wall of the cup body by the cup lid;

[0021] Alternatively, a magnet is installed on the outer bottom wall of the pulverizing cup, and the magnet is attracted to the bottom wall of the cover;

[0022] Alternatively, the crushing cup includes a cup body and a cup lid, the side wall of the cover is snapped or threaded to the cup lid, and the crushing cover and the cup lid together form a storage cavity.

[0023] The pulverizing hood can be reliably fixed inside the pulverizing cup by means of cup lid pressing, magnet, snap-fit, or threaded connection. During the high-speed rotation of the pulverizing blade, the pulverizing hood is reliably limited and will not rotate, thereby achieving effective pulverization and avoiding the pulverizing hood rotating, which would increase the motor load and increase the noise of the whole machine.

[0024] In a preferred embodiment, the mating part is a hollow column, and the drive shaft passes through the hollow column and is anti-rotationally mated with the hollow column;

[0025] The mating part is made of hollow column. After assembly with the drive shaft, the mating height between the drive shaft and the mating part is the entire height of the hollow column. This maximizes the use of the mating part without making it too large and increasing the center of gravity of the crushing. At the same time, it can also ensure the effective mating height between the drive shaft and the mating part, avoid the crushing blade from swaying, and improve the connection stability between the crushing blade and the drive shaft.

[0026] In a preferred embodiment, the mating part is a solid column, and one of the ends of the drive shaft and the solid column is provided with a countersunk hole, and the other is inserted into the countersunk hole to prevent rotation.

[0027] By setting the mating part as a solid column, preferably with a countersunk hole at the bottom of the solid column and the top of the drive shaft inserted into the countersunk hole, a column-hole fit is achieved. The countersunk hole is located on the solid column, allowing for easy disassembly and cleaning along with the pulverizing blades, making cleaning convenient, preventing residue buildup, and ensuring hygienic use. Alternatively, a countersunk hole can be set at the top of the drive shaft, with the bottom of the solid column inserted into the countersunk hole. This facilitates alignment during the installation of the pulverizing cover, providing visual alignment, making alignment easy, and installation convenient.

[0028] In a preferred embodiment, the axial extension height of the mating part along the drive shaft is H, where 5mm ≤ H ≤ 15mm;

[0029] In a preferred embodiment, the mating part extends axially along the drive shaft to a height of H, and the blade thickness of the crusher is W, where 3 ≤ H / W ≤ 5.

[0030] By setting the axial extension height of the mating part between 5-15mm, we avoid situations where H is less than 5mm, resulting in insufficient connection height between the mating part and the drive shaft, leading to poor suppression of blade sway and poor connection stability. Simultaneously, we avoid situations where H is greater than 15mm, causing the grinding center of gravity to be too high, resulting in incomplete grinding of materials deposited at the bottom and poor grinding efficiency. Similarly, the axial extension height H of the mating part and the blade thickness W should satisfy 3≤H / W≤5 to avoid poor connection stability due to an excessively small H / W ratio, and a high grinding center of gravity due to an excessively large H / W ratio. In summary, satisfying 5mm≤H≤15mm, or 3≤H / W≤5, can improve the reliability and stability of the connection between the grinding blade and the drive shaft while ensuring good grinding performance.

[0031] In a preferred embodiment, the shredder is a flow guide, the shredder blade has a pressing part, and the side wall of the flow guide is provided with a through circulation hole.

[0032] Alternatively, the crushing cover may be a filter screen cover, with several filter holes provided on the side wall of the cover.

[0033] The pulverizing hood uses a flow guide hood, and the pulverizing blade has a downward pressing part. The side wall of the flow guide hood is provided with through circulation holes. Therefore, when the pulverizing blade rotates, the downward pressing part, for example, with the downward-facing blade surface, presses water downward, thereby creating a negative pressure zone on the square surface of the pulverizing blade. Under the pressure, the liquid flow below the pulverizing blade is discharged to the surrounding circulation holes, and then tumbles into the flow guide hood under the obstruction of the side wall of the pulverizing cup, forming a circulating pulverizing inside and outside the flow guide hood, thus improving the pulverizing effect.

[0034] The crushing hood uses a filter screen, which can achieve automatic filtration, eliminating the trouble of manual filtration for users. It is easy to operate and can also expand the food processing machine to prepare soy pudding and other functions, thus achieving functional diversification.

[0035] In a preferred embodiment, the drive shaft is integrally connected to the motor shaft;

[0036] Alternatively, the drive shaft and the motor shaft are separately configured, with an upper connector at the bottom of the drive shaft and a lower connector at the top of the motor shaft, and the upper connector and the lower connector are coupled together.

[0037] By integrating the drive shaft and the motor shaft, with the motor fixedly mounted on the bottom wall of the grinding cup, this design is used in traditional integrated soymilk makers and features a simple structure. Alternatively, by separating the drive shaft and the motor shaft and connecting them via an upper and lower connector, the grinding cup and the main unit housing the motor can be detachably installed. This design is used in traditional blenders, making cleaning more convenient and offering greater flexibility for users. Attached Figure Description

[0038] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0039] Figure 1 This is a schematic diagram of the food processing machine in Embodiment 1 of this utility model;

[0040] Figure 2 for Figure 1 Enlarged diagram of section A in the middle;

[0041] Figure 3 This is a schematic diagram of the shredder in Embodiment 1 of this utility model;

[0042] Figure 4 This is a partial structural schematic diagram of the food processing machine in Embodiment 2 of this utility model;

[0043] Figure 5 This is a partial structural schematic diagram of the food processing machine in Embodiment 3 of this utility model;

[0044] Figure 6 This is a schematic diagram of the food processing machine in Embodiment 4 of this utility model;

[0045] Figure 7 for Figure 6 Enlarged schematic diagram of section B.

[0046] List of components and reference numerals: 10. Crushing cup; 100. Boss; 11. Cup body; 12. Cup lid; 13. Heating element; 20. Motor; 30. Drive shaft; 40. Crushing cover; 41. Support part; 42. Limiting part; 43. Mounting part; 51. Ring groove; 52. Ring rib; 60. Crushing blade; 61. Mating part; 62. Countersunk hole; 70. Bearing; 71. Inner ring; 72. Outer ring; 80. Magnet. Detailed Implementation

[0047] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0048] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0049] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. 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 any suitable manner in one or more embodiments or examples.

[0052] like Figure 1-3 As shown, in one embodiment of this utility model, a food processing machine is provided, including a grinding cup 10, a motor 20 located below the grinding cup 10, a grinding cover 40 installed inside the grinding cup 10, and a grinding blade 60 disposed inside the grinding cover 40. The motor 20 is connected to a drive shaft 30, which extends through the bottom wall of the grinding cup 10 and into the grinding cup 10. The grinding cover 40 includes a bottom wall and a side wall. The grinding blade 60 is installed on the bottom wall and rotates relative to the bottom wall. The side wall surrounds the outer periphery of the grinding blade 60. The grinding blade 60 has an integrally formed mating part 61 that is connected to the drive shaft 30 for transmission. The mating part 61 is rotatably connected to the bottom wall so that the drive shaft 30 drives the grinding blade 60 to rotate relative to the grinding cover 40. The grinding cover 40 and the grinding blade 60 are detachable together relative to the grinding cup 10.

[0053] This utility model provides a food processing machine, including a crushing hood 40 and a crushing blade 60 disposed inside the crushing hood 40. The crushing hood 40 includes a bottom wall and side walls. The crushing blade 60 is installed on the bottom wall. That is to say, the bottom wall provides all-round and large-area support for the installation of the crushing blade 60, so that the crushing blade 60 and the crushing hood 40 can be reliably rotated and connected. The installation is stable and will not cause the breakage and scrapping problems caused by traditional installation with connecting rods. It has a long service life and a reliable structure. Furthermore, by integrally forming a mating part 61 on the crushing blade 60, which is connected to the drive shaft 30, and rotatably connected to the bottom wall of the cover, the intermediate connection is achieved through the integrally formed mating part 61. Compared to the direct connection between the crushing blade 60 and the drive shaft 30, this increases the mating height and contact area between the crushing blade 60 and the drive shaft 30, thereby increasing the connection stability between the drive shaft 30 and the crushing blade 60, preventing severe swaying during the rotation of the crushing blade 60, and ensuring stable transmission between the crushing blade 60 and the drive shaft 30. Since the mating part 61 is integrally formed with the crushing blade 60, manual assembly by the assembler is not required, thereby reducing the mating tolerance and improving the mating accuracy, thus further ensuring stable transmission between the crushing blade 60 and the drive shaft 30. Furthermore, the rotatable connection between the mating part 61 and the bottom wall of the cover ensures a stable connection between the crushing blade 60 and the crushing cover 40. The crushing cover 40, along with the crushing blade 60, can be detached from the crushing cup 10, facilitating thorough cleaning or flexible replacement of the crushing blade 60, thus enhancing ease of use. Because the side wall of the cover surrounds the outer periphery of the crushing blade 60, it prevents the crushing blade 60 from cutting the user during disassembly and assembly, improving safety. The crushing cover 40 concentrates the material, allowing it to collide fully with the crushing blade 60, improving the fineness and efficiency of the crushing process.

[0054] This invention does not limit the form of the food processing machine, for example... Figure 1-3 As shown, the food processing machine is a traditional integrated soymilk maker. The motor 20 is fixedly installed on the bottom wall of the grinding cup 10, and the transmission shaft 30 is integrally connected to the rotating shaft of the motor 20.

[0055] In another embodiment, the food processing machine is a high-speed blender, including a main unit and a grinding cup 10. The motor 20 is installed in the main unit, the grinding cup 10 is detachable from the main unit, the drive shaft 30 is separately installed from the rotating shaft of the motor 20, an upper connector is installed at the bottom end of the drive shaft 30, and a lower connector is installed at the top end of the rotating shaft of the motor 20. The upper connector and the lower connector are coupled.

[0056] By integrally connecting the drive shaft 30 and the rotating shaft of the motor 20, with the motor 20 fixedly mounted on the bottom wall of the grinding cup 10, this design is suitable for traditional integrated soymilk makers and features a simple structure. Alternatively, by separating the drive shaft 30 and the rotating shaft of the motor 20 and connecting them via an upper and lower connector, a detachable installation can be achieved between the grinding cup 10 and the main unit housing the motor 20. This design is suitable for traditional blenders, making cleaning more convenient and offering greater flexibility in use.

[0057] It should be noted that this utility model does not limit the integral molding method of the mating part 61 and the crushing blade 60, including the mating part 61 and the crushing blade 60 being integrally molded from the same material, the mating part 61 and the crushing blade 60 being injection molded from different materials, or the mating part 61 and the crushing blade 60 being welded together.

[0058] Preferably, the axial extension height of the mating part 61 along the drive shaft 30 is H, 5mm≤H≤15mm, for example, H is 10mm; or, the axial extension height of the mating part 61 along the drive shaft 30 is H, and the blade thickness (maximum thickness) of the crushing blade 60 is W, 3≤H / W≤5.

[0059] By setting the axial extension height of the mating part 61 to 5-15mm, we avoid situations where H is less than 5mm, resulting in a too small connection height between the mating part 61 and the drive shaft 30, leading to poor suppression of the swaying of the crushing blade 60 and poor connection stability. Simultaneously, we avoid situations where H is greater than 15mm, resulting in a too high center of gravity for crushing, which would lead to insufficient crushing of materials deposited at the bottom and poor crushing efficiency. Similarly, the axial extension height H of the mating part 61 and the blade thickness W satisfy 3≤H / W≤5, again to avoid poor connection stability due to an excessively small H / W ratio, and a high center of gravity for crushing due to an excessively large H / W ratio. In summary, satisfying 5mm≤H≤15mm, or 3≤H / W≤5, can improve the reliability and stability of the connection between the crushing blade 60 and the drive shaft 30 while ensuring good crushing performance.

[0060] Furthermore, this utility model does not limit the assembly method of the crushing blade 60, the crushing cover 40, and the drive shaft 30, for example:

[0061] Implementation Example 1, such as Figure 1-3 As shown, a boss 100 is provided on the inner bottom wall of the crushing cup 10. The drive shaft 30 passes through the boss 100 and extends into the crushing cup 10. The bottom wall of the cover includes a support part 41 that fits against the inner bottom wall of the crushing cup 10, a limiting part 42 that fits against the boss 100, and a mounting part 43 located above the boss and connected to the limiting part. The mating part 61 is rotatably connected to the mounting part 43.

[0062] Preferably, the mounting part 43 is designed to be thickened to further improve the connection stability between the crushing blade 60 and the crushing cover 40.

[0063] In this embodiment, since the inner bottom wall of the crushing cup 10 is provided with a boss 100 and a bearing 70 is installed in the boss 100, the drive shaft 30 extends into the crushing cup 10 through the boss 100. That is, the inner bottom wall of the crushing cover 40 is not smooth. If the crushing cover 40 is placed in the crushing cup 10, a cavity may be formed between the crushing cover 40, the inner bottom wall of the crushing cup 10, and the boss 100. On the one hand, the limiting between the crushing cover 40 and the inner bottom wall of the crushing cup 10 is unreliable, and the crushing cover 40 may rotate or shift. On the other hand, the bottom wall of the crushing cover 40 may close the cavity. During the heating process, the air in the cavity expands due to heat, which may cause danger or affect the installation stability of the crushing cover 40. Therefore, preferably, the bottom wall of the cover includes a support portion 41 that fits against the inner bottom wall of the crushing cup 10, a limiting portion 42 that fits against the boss 100, and a mounting portion 43 disposed on the limiting portion 42. The mating portion 61 is rotatably connected to the mounting portion 43. By having the support portion 41 and the limiting portion 42 fit against the inner bottom wall of the crushing cup 10 and the boss 100 respectively, the friction is increased, preventing the crushing cover 40 from rotating or moving, achieving good positioning between the crushing cover 40 and the crushing cup 10. At the same time, it avoids the formation of a sealed cavity between the bottom wall of the cover and the inner bottom wall of the crushing cup 10, ensuring pressure balance and improving safety in use.

[0064] More preferably, such as Figure 2 As shown, the mounting part 43 surrounds the outer periphery of the mating part 61. An annular groove 51 is provided on the outer periphery of the mating part 61, and an annular rib 52 is provided on the mounting part 43. The annular rib 52 is riveted to and slidably fitted with the annular groove 51. It can be understood that the mounting part 43 itself directly forms the annular rib 52, as shown in the reference diagram. Figure 2 Alternatively, when the thickness of the mounting part 43 is too thick, a ring rib 52 can be provided on the inner wall of the mounting hole enclosed by the mounting part 43.

[0065] By employing the mating method of the annular groove 51 and the annular rib 52, the pulverizing blade 60 is directly riveted to the bottom wall of the pulverizing cover 40 via the mating part 61, and can rotate relative to the pulverizing cover 40. This eliminates the need for cumbersome installation procedures, simplifying the installation method and structure. The structure is reliable and durable even under prolonged exposure to liquid environments, eliminating maintenance hassles. Of course, the positions of the annular rib 52 and the annular groove 51 can be interchanged.

[0066] To reduce friction between the ring rib 52 and the ring groove 51, the mating part 61 may optionally be a self-lubricating connector integrally injection molded with the crushing blade 60, for example, a food-grade connector containing polytetrafluoroethylene; or, the inner wall of the ring groove 51 may be provided with balls or protrusions that slide in cooperation with the ring rib 52.

[0067] By setting the mating part 61 as a self-lubricating connector that is injection molded integrally with the crushing blade 60, a self-lubricating layer is generated when the ring rib 52 and the ring groove 51 slide together, thereby reducing dynamic friction; setting balls or protrusions also reduces the dynamic friction between the crushing blade 60 and the crushing cover 40, making the sliding fit between the ring rib 52 and the ring groove 51 smoother.

[0068] like Figure 1-3 As shown, in this embodiment, the specific structure of the mating part 61 is as follows: the mating part 61 is a hollow column, and the drive shaft 30 passes through the hollow column and is anti-rotationally mated with the hollow column. Specifically, the cross-section of the drive shaft 30 is irregular, and the inner hole of the hollow column is an irregular hole, for example, a flat part is provided on the outer wall of the drive shaft 30.

[0069] The mating part 61 is a hollow column. After being assembled with the drive shaft 30, the mating height between the drive shaft 30 and the mating part 61 is the entire height of the hollow column. This maximizes the use of the mating part 61 without making it too large and increasing the center of gravity of the crushing process. At the same time, it can also ensure the effective mating height between the drive shaft 30 and the mating part 61, prevent the crushing blade 60 from swaying, and improve the connection stability between the crushing blade 60 and the drive shaft 30.

[0070] In this embodiment, the crushing hood 40 is a filter screen, and several filter holes are provided on the side wall of the hood.

[0071] The crushing hood 40 uses a filter screen, which can achieve automatic filtration, eliminating the trouble of manual filtration for users. It is easy to operate and can also expand the functions of the food processing machine to include the preparation of tofu pudding, thus achieving functional diversification.

[0072] Optionally, such as Figure 1-3 As shown, the pulverizing cup 10 includes a cup body 11 and a cup lid 12, and the pulverizing cover 40 is pressed against the inner bottom wall of the cup body 11 by the cup lid 12.

[0073] Of course, other fixing methods can also be used in this embodiment. For example, a magnet 80 is installed on the outer bottom wall of the crushing cup 10, and the magnet 80 is attracted to the bottom wall of the cover. Specifically, the magnet 80 is provided on the bottom wall of the cover, or the crushing cover 40 is made of a material that is attracted to the magnet 80. As another example, the crushing cup 10 includes a cup body 11 and a cup lid 12, the side wall of the cover is snapped or threaded to the cup lid 12, and the crushing cover 40 and the cup lid 12 together form a storage cavity.

[0074] The crushing hood 40 can be reliably fixed inside the crushing cup 10 by means of cup lid 12 pressing, magnet 80, snap-fit ​​or threaded connection. During the high-speed rotation of the crushing blade 60, the crushing hood 40 is reliably limited and will not rotate, thereby achieving effective crushing and avoiding the increase of motor 20 load and the increase of overall machine noise caused by the rotation of the crushing hood 40.

[0075] The food processing machine provided in this embodiment can be used to prepare smooth soy milk for direct consumption, as well as to make tofu pudding.

[0076] When using the food processor to make tofu, the user can first place the soybeans in the crushing hood 40, then install the crushing hood 40 on the cup lid 12 and fix it in the cup body 11 with the cup lid 12; or, a feeding port can be set on the cup lid 12, the crushing hood 40 and the crushing blade 60 can be installed first, and then the soybeans can be added during the crushing process, which is flexible to use.

[0077] After the grinding is complete, the user can open the cup lid 12 to disassemble the grinding cover 40 and grinding blade 60 together, and filter the soybean residue at the same time, leaving the filtered slurry in the cup body 11. Then, the user can directly add a coagulant, such as glucono delta-lactone, into the cup, and then keep the food processor warm or adjust the temperature as needed to accelerate the coagulation of the slurry and prepare tofu pudding.

[0078] Using the food processing machine provided in this embodiment, the user is exempt from separate filtering operations during the preparation of tofu pudding, and there is no need to change containers. The crushing cup 10 can be used directly in one step, making the operation more convenient. The food processing machine includes a heating element 13 for heating the crushing cup 10, which can adjust or control the temperature inside the crushing cup 10 during the coagulation of tofu pudding, thereby improving the tofu pudding forming effect, enhancing the taste of tofu pudding, and accelerating the coagulation of tofu pudding.

[0079] Implementation Example 2, such as Figure 4 As shown, the difference between this embodiment and embodiment 1 is the structure of the mating part 61.

[0080] In this embodiment, the mating part 61 is a solid column. Preferably, a countersunk hole 62 is provided at the bottom end of the solid column, and the top end of the transmission shaft 30 is inserted into the countersunk hole 62 to prevent rotation, thereby achieving a column-hole mating.

[0081] Since the countersink 62 is located at the bottom of the solid column, it can be disassembled and cleaned along with the crushing blade 60, making cleaning convenient, preventing residue buildup, and ensuring hygienic use.

[0082] More preferably, the outer diameter of the bottom end of the solid column is enlarged to provide a countersunk hole 62, so as to further improve the connection reliability.

[0083] Of course, as an alternative embodiment of this example, the countersunk hole 62 can be set at the top of the drive shaft 30, and the bottom end of the solid column can be inserted into the countersunk hole 62 to prevent rotation. This setting can facilitate the user to align the crushing cover 40 during installation, achieve visual alignment, and make alignment easy and installation convenient.

[0084] The fixing method of the crushing hood 40 and the bottom wall structure of the crushing hood 40 in this embodiment can be referred to in embodiment 1.

[0085] Implementation Example 3, such as Figure 5 As shown, the difference between this embodiment and embodiment 1 is the installation method of the shredder 60 and the shredder cover 40.

[0086] In this embodiment, the bottom wall of the crushing hood 40 includes a mounting portion 43, which surrounds the outer periphery of the mating portion 61. A bearing 70 is disposed inside the mounting portion 43, and the mating portion 61 is fitted onto the bearing 70.

[0087] More preferably, such as Figure 5 As shown, the bearing 70 includes an inner ring 71 and an outer ring 72. A limiting groove is provided on the inner wall of the mounting part 43. The outer ring 72 is embedded in the limiting groove. The mating part 61 passes through the inner ring 71 and is interference-fitted with the inner ring 71.

[0088] By incorporating bearing 70, wear caused by dynamic friction between the crushing blade 60 and the crushing cover 40 can be reduced, extending service life and ensuring structural reliability. A limiting groove is provided on the inner wall of the mounting part 43, allowing the bearing 70 to be fitted into the groove via the outer ring 72. This ensures a secure connection between the bearing 70 and the crushing cover 40. Furthermore, the interference fit between the mating part 61 and the inner ring 71 provides a stable connection between the crushing blade 60, bearing 70, and crushing cover 40, enhancing structural stability.

[0089] Preferably, the bearing 70 is a food-grade waterproof bearing 70.

[0090] Implementation Example 4, such as Figure 6 , 7 As shown, this embodiment differs from the structure of the shredder 40 in Embodiment 1. In this embodiment, the shredder 40 is a flow guide, the shredder 60 has a pressing part, for example, the pressing part is a downward-facing blade surface, and the side wall of the flow guide is provided with a through circulation hole.

[0091] Due to the limited height of the fairing, preferably, such as Figure 6 , 7 As shown, a magnet 80 is installed on the outer bottom wall of the grinding cup 10, and the magnet 80 is attracted to the bottom wall of the cover. Specifically, the magnet 80 is installed on the bottom wall of the cover, or the grinding cover 40 is made of a material that attracts the magnet 80.

[0092] In this embodiment, the pulverizing hood 40 is a flow guide hood, the pulverizing blade 60 has a pressing part, and the side wall of the flow guide hood is provided with a through circulation hole. Therefore, when the pulverizing blade rotates, the pressing part presses the water downward, thereby creating a negative pressure area on the square surface of the pulverizing blade. Under the pressure, the liquid flow below the pulverizing blade is discharged to the surrounding circulation holes, and then tumbles into the flow guide hood under the obstruction of the side wall of the pulverizing cup, forming a circulating pulverization inside and outside the flow guide hood, thus improving the pulverization effect.

[0093] The installation structure of the shredder and shredder cover in this embodiment can be referred to in Embodiment 1.

[0094] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0095] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0096] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A food processing machine, comprising a grinding cup, a motor located below the grinding cup, a grinding hood installed inside the grinding cup, and grinding blades disposed inside the grinding hood, wherein the motor is connected to a drive shaft, the drive shaft extending through the bottom wall of the grinding cup into the grinding cup, characterized in that, The pulverizing hood includes a bottom wall and a side wall. The pulverizing blade is mounted on the bottom wall and rotates relative to it. The side wall surrounds the outer periphery of the pulverizing blade. The pulverizing blade has an integrally formed mating part that is connected to the drive shaft. The mating part is rotatably connected to the bottom wall so that the drive shaft drives the pulverizing blade to rotate relative to the pulverizing hood. The pulverizing hood and the pulverizing blade are detachable together relative to the pulverizing cup.

2. The food processing machine according to claim 1, characterized in that, The inner bottom wall of the grinding cup is provided with a boss, and the drive shaft extends into the grinding cup through the boss. The bottom wall of the cover includes a support part that fits against the inner bottom wall of the grinding cup, a limiting part that fits against the boss, and a mounting part located above the boss and connected to the limiting part. The mating part is rotatably connected to the mounting part.

3. A food processing machine according to claim 1 or 2, characterized in that, The bottom wall of the cover includes a mounting portion surrounding the outer periphery of the mating portion. One of the mating portion and the mounting portion is provided with an annular groove, and the other is provided with an annular rib. The annular rib is riveted to the annular groove and slidably engaged.

4. A food processing machine according to claim 3, characterized in that, The mating part is a self-lubricating connector that is injection molded integrally with the crushing blade; Alternatively, the inner wall of the annular groove may be provided with balls or protrusions that slide in cooperation with the annular rib.

5. A food processing machine according to claim 1 or 2, characterized in that, The bottom wall of the cover includes a mounting portion surrounding the outer periphery of the mating portion. A bearing is disposed within the mounting portion, and the mating portion is fitted onto the bearing. The bearing includes an inner ring and an outer ring. A limiting groove is provided on the inner wall of the mounting portion, and the outer ring is embedded in the limiting groove. The mating portion is fitted onto the inner ring and is interference-fitted with the inner ring.

6. A food processing machine according to claim 1, characterized in that, The pulverizing cup includes a cup body and a cup lid, and the pulverizing cover is pressed against the inner bottom wall of the cup body by the cup lid; Alternatively, a magnet is installed on the outer bottom wall of the pulverizing cup, and the magnet is attracted to the bottom wall of the cover; Alternatively, the crushing cup includes a cup body and a cup lid, the side wall of the cover is snapped or threaded to the cup lid, and the crushing cover and the cup lid together form a storage cavity.

7. A food processing machine according to claim 1, characterized in that, The mating part is a hollow column, and the drive shaft passes through the hollow column and is anti-rotationally engaged with the hollow column; Alternatively, the mating part is a solid column, with a countersunk hole provided at one end of the drive shaft and the end of the solid column, and the other end of the solid column being inserted into the countersunk hole to prevent rotation.

8. A food processing machine according to claim 1, characterized in that, The axial extension height of the mating part along the transmission shaft is H, where 5mm ≤ H ≤ 15mm; Alternatively, the axial extension height of the mating part along the drive shaft is H, and the blade thickness of the crusher is W, where 3 ≤ H / W ≤ 5.

9. A food processing machine according to claim 1, characterized in that, The crushing shroud is a flow guide shroud, the crushing blade has a pressing part, and the side wall of the flow guide shroud is provided with a through circulation hole; Alternatively, the shredder can be a filter screen.

10. A food processing machine according to claim 1, characterized in that, The drive shaft is integrally connected to the motor shaft; Alternatively, the drive shaft and the motor shaft are separately configured, with an upper connector at the bottom of the drive shaft and a lower connector at the top of the motor shaft, and the upper connector and the lower connector are coupled together.

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