Food processor easy to clean

Abstract

The utility model discloses a food processor easy to clean, which comprises a base and a cup body arranged on the base, the bottom of the cup body is closed, a motor is arranged in the base, a detachable grinding assembly is arranged in the cup body, the grinding assembly comprises a static grinding head, a movable grinding head and a transmission shaft, the transmission shaft is rotatably supported on the static grinding head, and the movable grinding head is arranged on the base. The movable grinding head is detachably installed on the transmission shaft, a magnetic driving assembly is arranged between the transmission shaft and the motor, the movable grinding head is driven by the magnetic driving assembly to rotate, and the movable grinding head and the static grinding head are matched to grind food materials. The whole grinding assembly can be detached from the cup body, so that the grinding assembly can be conveniently and specially cleaned; due to the fact that the movable grinding head is detachably installed on the transmission shaft, the movable grinding head can be taken down, the movable grinding head and the static grinding head are cleaned respectively, the positions, where food residues are prone to being accumulated, of the grinding assembly can be cleaned, and the problem that an existing grinding component is difficult to clean is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of small kitchen appliances, in particular to a food processor. Background Art

[0002] The biggest pain point of existing food processors such as wall breakers and soy milk machines is that they are difficult to clean. The most difficult and troublesome part to clean is the blade and its surroundings. Since the blade is sharp and located at the bottom of the deep cavity of the cup, there is a risk of hurting your hands if you clean it manually.

[0003] In order to solve this problem, the prior art also has a technology that uses magnetic drive transmission to drive the blade to crush the food. Reference is made to a Chinese patent application with announcement number CN210540751U, which discloses a cooking utensil and an integrated stove that are easy to clean and maintain, wherein the cooking utensil includes a machine base, a pot body, a stirring assembly and a power assembly, wherein the pot body is supported on the machine base; the stirring assembly extends into the pot body, and the stirring assembly has a stirring shaft perpendicular to the central axis of the pot body; the power assembly is arranged inside the machine base and is magnetically connected to the stirring assembly to drive the stirring assembly to rotate around the stirring shaft, so that it is convenient to take out the stirring assembly for cleaning.

[0004] However, even by increasing the blade speed and lengthening the crushing time, it is difficult for the blade type crushing to further break through the fineness below 100um particle size. The bottleneck superimposed on the blade crushing naturally cuts the particles in long strips, causing users to have a sore throat and a feeling of residue when drinking. Therefore, the application of the ancient grinding technology is proposed again. In order to obtain a better crushing effect, the prior art also discloses a food processor and its fine grinder assembly. The fine grinder assembly includes a static grinding part, a dynamic grinding part and a shaft rod fixing seat. The dynamic grinding part and the shaft rod fixing seat are fixed by transmission cooperation. The static grinding part is arranged around the dynamic grinding part. The bottom of the static grinding part is fixed to the shaft rod fixing seat. The top of the shaft rod of the shaft rod fixing seat passes through the dynamic grinding part; the fine grinder assembly also includes a limit fixing part, which is fixed on the dynamic grinding part and is snap-connected with the top of the shaft rod to prevent the dynamic grinding part from falling off the shaft rod. After the above-mentioned refiner assembly is installed at the bottom of the cup body assembly, the shaft transmission component therein needs to pass through the bottom of the cup body assembly and be mechanically connected with the driving component in the base. This not only requires the addition of a complicated sealing structure to avoid liquid leakage, but also makes it difficult to separate the refiner assembly from the cup body assembly. Therefore, similar grinding structures in the prior art need to overcome the problem of being difficult to clean. Utility Model Content

[0005] In view of the defects of the prior art, the technical problem to be solved by the utility model is to provide an easy-to-clean food processor to solve the problem that the existing grinding structure is difficult to separate from the cup body as a whole for cleaning, and the various parts of the grinding structure are difficult to clean.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: an easy-to-clean food processor, comprising a base and a cup body arranged on the base and with a closed bottom, wherein a motor is arranged in the base, and a detachable grinding assembly is arranged in the cup body, wherein the grinding assembly comprises a static grinding head, a dynamic grinding head and a transmission shaft, wherein the transmission shaft is rotatably supported on the static grinding head, and the dynamic grinding head is detachably mounted on the transmission shaft, and a magnetic drive assembly is arranged between the transmission shaft and the motor, wherein the dynamic grinding head is driven to rotate by the magnetic drive assembly, and the dynamic grinding head cooperates with the static grinding head to grind the food.

[0007] Preferably, the static grinding head includes a shell and a partition arranged on the inner side of the bottom of the shell, the middle part of the transmission shaft is sealed and passes through the partition, the dynamic grinding head is located above the partition, the bottom end of the shell is provided with a bottom cover, and the lower end of the transmission shaft is connected to the magnetic drive assembly.

[0008] Preferably, a stepped hole is provided on the partition, a shaft seal and a bearing are installed in the stepped hole, and the transmission shaft is connected to the shaft seal and the bearing.

[0009] Preferably, a center positioning boss is provided at the center of the bottom cover, a center positioning groove is provided at the bottom center of the transmission shaft, the center positioning groove cooperates with the center positioning boss, and a ball is provided between the center positioning boss and the center positioning groove.

[0010] Preferably, the upper inner wall of the static grinding head is provided with an inner cylindrical grinding surface, and the dynamic grinding head includes a screw arranged at the lower part of the dynamic grinding head and an outer cylindrical grinding surface arranged at the upper outer wall of the dynamic grinding head, wherein the screw cooperates with the inner wall of the shell to coarsely grind the food and drive the food to flow upward, and the inner cylindrical grinding surface cooperates with the outer cylindrical grinding surface to finely grind the food.

[0011] Preferably, the inner circular grinding surface is provided with an array of protruding points; and / or the outer circular grinding surface is provided with outer edges extending obliquely upward and downward distributed along the circumferential direction.

[0012] Preferably, the inclination angle of the outer edge is 5-10°; and the single-side radial clearance between the inner circle grinding surface and the outer circle grinding surface is ≤0.4 mm.

[0013] Preferably, the magnetic drive assembly includes an upper magnet plate arranged at the bottom of the transmission shaft and a lower magnet plate connected to the motor shaft. The lower magnet plate and the upper magnet plate are transmitted through non-contact magnetic field action and drive the movable grinding head to rotate.

[0014] Preferably, the inner bottom wall of the cup body is provided with a positioning recess for positioning the bottom of the static grinding head, one of the bottom of the static grinding head and the positioning recess is provided with a rotation-stopping boss, and the other is provided with a rotation-stopping groove, and the rotation-stopping boss cooperates with the rotation-stopping groove to stop rotation.

[0015] Preferably, the easy-to-clean food processor also includes a knife seat assembly that can be replaced with the grinding assembly, and the knife seat assembly includes a stationary knife seat, a moving knife shaft rotatably connected to the stationary knife seat, and a crushing knife installed on the moving knife shaft.

[0016] The technical solution adopted by the utility model has the following beneficial effects:

[0017] 1. The dynamic grinding head and the static grinding head are used together to grind the food materials, simulating the ancient grinding technology. The food particles can be ground to a particle size of less than 100um, and micro-particles with finer microscopic particle size and more rounded shape can be obtained to improve the drinking taste and bring a good user experience.

[0018] Because the transmission shaft and the motor are non-contactedly driven by magnetic drive through the magnetic drive assembly, the entire grinding assembly can be removed from the cup body, making it convenient to clean the grinding assembly.

[0019] Since the dynamic grinding head can be detachably mounted on the transmission shaft, the dynamic grinding head can be removed, and since the transmission shaft is rotatably supported on the static grinding head, the transmission shaft can also be separated from the static grinding head. As a result, the various components of the grinding assembly can be both firmly connected and detachable, and the dynamic grinding head, static grinding head and transmission shaft can be cleaned separately, either as a whole or by disassembling and cleaning the various components. In this way, the entire assembly can be cleaned after each use, and the various components can be disassembled and cleaned after being used for a long time. The places where food residues are easily accumulated in the grinding assembly can be cleaned, which solves the problem that the existing grinding structure is difficult to separate from the cup body as a whole for cleaning, and the various parts of the grinding structure are difficult to clean.

[0020] Since the drive shaft and the motor are non-contact magnetically driven through the magnetic drive assembly, the bottom of the cup body is closed to avoid the need for the shaft transmission component to pass through the bottom of the cup body assembly and to be mechanically connected with the drive component in the base, which would result in a complicated sealing structure and increase the cost of the entire machine.

[0021] Since the drive shaft and the motor are non-contactedly driven by magnetic drive components, the magnetic field can transmit large torque when the magnetic density is high enough, and the problem of shaft drive overload can also be avoided.

[0022] 2. Since the food is above the partition, the middle part of the transmission shaft is sealed and passes through the partition. The dynamic grinding head and the static grinding head cooperate to grind the food above the partition. Food residue and liquid will be generated in this process. Therefore, food residue and liquid will not enter under the partition to avoid leakage and affect the normal operation of the magnetic drive component.

[0023] 3. The shaft seal can achieve sealing isolation, and the bearing can provide rolling support for the transmission shaft. Moreover, the shaft seal and the bearing can also make the dynamic grinding head achieve radial balance, ensuring the radial matching clearance between the dynamic grinding head and the static grinding head, thereby ensuring the grinding effect.

[0024] 4. A center positioning boss is provided at the center of the bottom cover, and a center positioning groove is provided at the bottom center of the transmission shaft. The center positioning groove cooperates with the center positioning boss, and a ball is provided between the center positioning boss and the center positioning groove, so as to form a bearing-like structure. The bottom end of the transmission shaft and the bottom cover rotate relative to each other. In order to prevent friction between the two relatively moving parts, balls are introduced to convert sliding friction into rolling friction, so as to ensure that the dynamic and static grinding heads run smoothly without jamming.

[0025] 5. The screw and the inner wall of the shell cooperate to coarsely grind the food and drive the food to flow upward, and the inner circle grinding surface and the outer circle grinding surface cooperate to finely grind the food.

[0026] 6. In order to restore the ancient stone mill grinding process, the ingredients are crushed by rolling and friction between the dynamic grinding head and the static grinding head. The inner grinding surface is provided with an array of convex points, and the outer grinding surface is distributed with outer edges extending up and down along the circumference. This increases the friction area of ​​the beans passing through the gaps, and obtains particles with finer microscopic size and more rounded shape, so as to improve the drinking taste.

[0027] 7. The single-sided radial gap between the inner and outer grinding surfaces is ≤0.4mm, because a smaller gap is conducive to improving the grinding accuracy and obtaining particles with finer microscopic particle size and more rounded shape to improve the drinking taste.

[0028] 8. The lower magnet plate and the upper magnet plate are driven by the non-contact magnetic field generated by the lower array magnetic steel and the upper array magnetic steel, and drive the movable grinding head to rotate.

[0029] 9. The bottom of the static grinding head is placed in a positioning recess, and the anti-rotation boss cooperates with the anti-rotation groove to prevent the static grinding head from rotating during the grinding process.

[0030] 10. Because the grinding component can be removed from the cup body as a whole, other crushing components can be used to replace the grinding component, such as a magnetic drive transmission knife seat component. This broadens the functional range of the machine. For example, after replacing the blade, it can be used to make juice, mince meat, grind dry powder, etc.

[0031] The specific technical solution adopted by the utility model and the beneficial effects brought about by it will be disclosed in detail in the following specific implementation manner in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0033] Figure 1 This is a cross-sectional view of the whole structure of an easy-to-clean food processor of the utility model;

[0034] Figure 2This is the dissected structure diagram of the cup body;

[0035] Figure 3 It is a schematic diagram of the exploded structure of the dynamic grinding head and the static grinding head;

[0036] Figure 4 It is a cross-sectional view of the moving grinding head;

[0037] Figure 5 It is a cross-sectional view of the matching part between the dynamic grinding head and the static grinding head;

[0038] Figure 6 It is a structural schematic diagram of the matching parts of the dynamic grinding head and the static grinding head;

[0039] Figure 7 is a cross-sectional view of the cup body assembly;

[0040] Figure 8 This is an exploded view of an easy-to-clean food processor of the utility model;

[0041] Fig. 9 A cross-sectional view of the food processor after the grinding assembly is replaced with the crushing blade assembly;

[0042] Fig.10 It is a structural schematic diagram of a crushing knife assembly;

[0043] In the figure: base 1, base shell 11, base lower shell 12, handle 13, motor 14, motor shaft 141, locking screw 142, lower magnet disk 15, lower array magnetic steel 16, cup body 2, positioning recess 21, anti-rotation groove 22, cup cover 23, grinding assembly 3, static grinding head 31, suction hole 311, inner circle grinding surface 312, anti-rotation boss 313, partition 314, bottom cover 315, center positioning boss 316, ball limiting groove 3161, welding 317, dynamic grinding head 32, screw 321, outer circle grinding surface 322, flat square hole 323, transmission shaft 33, external thread 331, upper magnet disk 332, center positioning groove 3321, shaft seal 34, bearing 35, ball 36, upper array magnetic steel 37, knife seat assembly 4, crushing knife 41. DETAILED DESCRIPTION

[0044] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0045] Those skilled in the art will appreciate that, in the absence of conflict, the features in the following embodiments and implementations may be combined with each other.

[0046] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the following words such as "upper", "lower", "inner", "outer", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figures 1 to 8 As shown, this embodiment provides an easy-to-clean food processor, including a base 1 and a cup body 2 arranged on the base and having a closed bottom, wherein a motor 14 is arranged in the base 1, and a detachable grinding assembly 3 is arranged in the cup body 2, wherein the grinding assembly 3 includes a static grinding head 31, a dynamic grinding head 32 and a transmission shaft 33, wherein the transmission shaft 33 is rotatably supported on the static grinding head 31, and the dynamic grinding head 32 is detachably mounted on the transmission shaft 33. A magnetic drive assembly is arranged between the transmission shaft 33 and the motor 14. The dynamic grinding head is driven to rotate by the magnetic drive assembly, and the dynamic grinding head cooperates with the static grinding head to grind the food.

[0049] The dynamic grinding head and the static grinding head work together to grind the food, simulating the ancient grinding technology. The food particles can be ground to a particle size of less than 100um, obtaining microscopic particles with finer particle size and more rounded shape, so as to improve the drinking taste and bring a good user experience.

[0050] Because the transmission shaft and the motor are non-contactedly driven by magnetic drive through the magnetic drive assembly, the entire grinding assembly can be removed from the cup body, making it convenient to clean the grinding assembly.

[0051] Since the dynamic grinding head can be detachably mounted on the transmission shaft, the dynamic grinding head can be removed, and since the transmission shaft is rotatably supported on the static grinding head, the transmission shaft can also be separated from the static grinding head. As a result, the various components of the grinding assembly can be both firmly connected and detachable, and the dynamic grinding head, static grinding head and transmission shaft can be cleaned separately, either as a whole or by disassembling and cleaning the various components. In this way, the entire assembly can be cleaned after each use, and the various components can be disassembled and cleaned after being used for a long time. The places where food residues are easily accumulated in the grinding assembly can be cleaned, which solves the problem that the existing grinding structure is difficult to separate from the cup body as a whole for cleaning, and the various parts of the grinding structure are difficult to clean.

[0052] Since the drive shaft and the motor are non-contact magnetically driven through the magnetic drive assembly, the bottom of the cup body is closed to avoid the need for the shaft transmission component to pass through the bottom of the cup body assembly and to be mechanically connected with the drive component in the base, which would result in a complicated sealing structure and increase the cost of the entire machine.

[0053] Since the drive shaft and the motor are non-contactedly driven by magnetic drive components, the magnetic field can transmit large torque when the magnetic density is high enough, and the problem of shaft drive overload can also be avoided.

[0054] In order to seal and isolate the static grinding head from the magnetic drive transmission part, the static grinding head 31 includes a shell, a partition 314 arranged on the inner side of the bottom of the shell, the middle part of the transmission shaft 33 is sealed through the partition 314, the dynamic grinding head 32 is located above the partition, the bottom end of the shell is provided with a bottom cover 315, the bottom cover is welded 317 to the bottom opening of the shell, and the lower end of the transmission shaft is connected to the magnetic drive assembly. It can be understood that the magnetic drive assembly is divided into two separate parts, namely the active part and the driven part, where the lower end of the transmission shaft is connected to the driven part of the magnetic drive assembly, and the motor is connected to the active part. Since the food is above the partition, the middle part of the transmission shaft is sealed through the partition, and the dynamic grinding head and the static grinding head cooperate to grind the food above the partition. In this process, food residues and liquids will be generated. Therefore, the food residues and liquids will not enter below the partition to avoid leakage and affect the normal operation of the magnetic drive assembly.

[0055] Furthermore, the partition 314 is provided with a stepped hole, in which a shaft seal 34 and a bearing 35 are installed, the shaft seal is located at the upper small diameter part, and the bearing is located at the lower large diameter part, and the bearing also axially limits the shaft seal. The transmission shaft 33 is connected with the shaft seal 34 and the bearing 35, and a limiting step is provided on the transmission shaft to match the lower end surface of the bearing. In this way, the shaft seal can achieve sealing isolation, the bearing can roll support the transmission shaft, and the shaft seal 34 and the bearing 35 can also make the dynamic grinding head achieve radial balance, ensure the radial matching clearance between the dynamic grinding head and the static grinding head, thereby ensuring the grinding effect.

[0056] In order to achieve axial balance, a center positioning convex column 316 is provided at the center of the bottom cover 315, and a center positioning groove 3321 is provided at the center of the bottom of the transmission shaft 33. The center positioning groove 3321 cooperates with the center positioning convex column 316, and a ball 36 is provided between the center positioning convex column and the center positioning groove, and a ball limiting groove 3161 is provided on the center positioning convex column to cooperate with the ball 36. In this way, a structure similar to a bearing is formed, and the bottom end of the transmission shaft and the bottom cover rotate relative to each other. In order to prevent friction, the two relatively moving parts introduce balls to convert sliding friction into rolling friction, so as to ensure that the dynamic and static grinding heads run smoothly without jamming.

[0057] A grinding matching structure is provided between the moving grinding head 32 and the static grinding head 31, and the grinding matching structure includes a screw 321 provided at the lower part of the moving grinding head, an outer cylindrical grinding surface 322 provided at the upper outer wall of the moving grinding head, and an inner cylindrical grinding surface 312 provided on the upper inner wall of the static grinding head, wherein the screw cooperates with the inner wall of the shell to coarsely grind the food and drive the food to flow upward, and the inner cylindrical grinding surface cooperates with the outer cylindrical grinding surface to finely grind the food. The screw includes a screw shaft and a spiral blade arranged around the screw shaft. A suction hole 311 is provided on the side wall of the shell corresponding to the lower part of the screw, and the food enters from the suction hole.

[0058] Specifically, in order to restore the ancient stone grinding process, the ingredients are crushed by rolling and friction between the dynamic grinding head and the static grinding head. Figure 6 As shown, the inner grinding surface 312 is provided with an array of convex points. The outer grinding surface 322 is provided with outer edges extending up and down in an inclined manner along the circumferential direction. This increases the friction area of ​​the beans passing through the gaps, and obtains particles with finer microscopic particle size and more rounded shape, so as to improve the drinking taste.

[0059] Preferably, Figure 4 As shown, the screw shaft of the screw gradually increases from bottom to top to form an angle α, and the angle α is between 5 and 20 degrees. The Archimedean screw pump principle is used to rotate the spiral blades to make the slurry rise in the axial spiral shape, realizing the relative rotation of the dynamic and static grinding heads in the slurry to promote the circulation of the slurry. Figure 6 As shown, the inclination angle of the outer edge is 5 to 10°. Figure 5 As shown, the radial clearance between the inner grinding surface and the outer grinding surface is ≤0.4 mm. A smaller clearance is conducive to improving the grinding accuracy, obtaining particles with finer microscopic particle size and more rounded shape, so as to improve the drinking taste.

[0060] Of course, the grinding coordination structure can also make other changes, so as to ultimately ensure the grinding effect, such as setting the design requirement of grinding food particles to a particle size of less than 100um.

[0061] The magnetic drive assembly includes an upper magnet disk 332 disposed at the bottom of the transmission shaft and a lower magnet disk 15 connected to the motor shaft 141, wherein the upper magnet disk is provided with an upper array magnetic steel 37, and the lower magnet disk is provided with a lower array magnetic steel 16. The upper magnet disk and the transmission shaft are integrally arranged, and the upper array magnetic steel 37 is embedded in the embedding groove of the upper magnet disk for auxiliary gluing and fixing, and the lower array magnetic steel 16 is embedded in the embedding groove of the lower magnet disk for auxiliary gluing and fixing. The lower magnet disk is fixed to the end of the motor shaft by screw locking. The lower magnet disk and the upper magnet disk are transmitted through the non-contact magnetic field generated between the lower array magnetic steel and the upper array magnetic steel, and drive the movable grinding head to rotate.

[0062] Furthermore, the inner bottom wall of the cup body 2 is provided with a positioning recess 21 for positioning the bottom of the static grinding head, and one of the bottom of the static grinding head 31 and the positioning recess 21 is provided with a stop boss 313, and the other is provided with a stop groove 22, and the stop boss cooperates with the stop groove to prevent rotation. In this embodiment, two stop bosses 313 are distributed along the circumferential direction of the outer circle of the bottom of the static grinding head, and two stop grooves 22 are correspondingly provided on the inner side wall of the positioning recess 21. The bottom of the static grinding head is placed in the positioning recess, and the stop boss cooperates with the stop groove to prevent the static grinding head from rotating during the grinding process.

[0063] like Figures 3 to 8 As shown, the upper end of the transmission shaft 33 is provided with a flat square portion and an external thread 331, the center of the dynamic grinding head is provided with a center hole, the transmission shaft passes through the center hole, the upper end of the center hole is provided with a flat square hole 323, and an internal thread is provided correspondingly, which cooperates with the external thread 331. In this way, the dynamic grinding head is easy to disassemble and assemble, and there is no obstruction inside the cup body, and each is convenient to clean.

[0064] like Figure 8 As shown, the lower part of the lower magnet disk 15 protrudes downward and is provided with a mounting hole, the upper part of the motor shaft is inserted into the mounting hole, the upper part of the motor shaft is provided with a threaded hole, the upper part of the lower magnet disk 15 is provided with a recessed groove, and the bottom of the recessed groove is provided with a through hole. The locking screw 142 passes through the through hole and is connected to the threaded hole to lock and fix the lower magnet disk 15 and the motor shaft 141.

[0065] In addition to the description of this embodiment, the specific structure of the grinding assembly may also adopt the structure in the prior art. Of course, it is sufficient to ensure that the entire grinding assembly can be removed from the cup body and that the various components of the grinding assembly can be firmly connected and disassembled and separated, which will not be repeated here.

[0066] In this embodiment, the base 1 and the cup body 2 are fixed together, including a base shell 11 and a base lower shell 12 installed at the bottom of the base shell. Most of the cup body is located in the base shell, and the upper end is exposed from the base shell. The mouth of the cup body is buckled with a cup cover 23, and a handle 13 is installed on the base shell. Taking the common cylindrical shape of the whole machine as an example, the base 1 and the cup body 2 are also cylindrical, the base shell is cylindrical, and the base lower shell closes the bottom opening of the base shell, which can be connected by buckles or screws. Of course, the base and the cup body can also be designed as a detachable structure.

[0067] The grinding assembly 3 is installed on the cup body to form a cup body assembly. It can be understood that because the grinding assembly can be removed from the cup body as a whole, the grinding assembly can also be replaced with other structures, such as a magnetic drive transmission type knife seat assembly. Fig. 9 and Fig.10 As shown, the easy-to-clean food processor also includes a knife seat assembly 4 that can be replaced with the grinding assembly 3. The knife seat assembly 4 is partially identical or similar to the grinding assembly 3, wherein the knife seat assembly 4 also includes a static grinding head (hereinafter referred to as the static knife seat) and a transmission shaft (hereinafter referred to as the knife shaft), and the knife shaft is rotatably connected to the static knife seat. Similar to the grinding assembly, a shaft seal and a bearing are also provided between the two, and there are also ball bearings between the static knife seat and the bottom seal. In addition, the installation structure between the static knife seat and the positioning recess of the bottom wall of the cup body is universal. The knife shaft is connected to the upper magnet disk to realize magnetic drive transmission with the lower magnet disk. The difference from the grinding assembly is that a moving grinding head is not provided, and a crushing knife 41 is installed on the upper end of the moving knife shaft. In this way, the functional range of the machine is broadened. For example, after replacing the blade, it can be used to make juice, mince meat, grind dry powder, etc.

[0068] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. An easy-to-clean food processor, comprising a base and a cup body disposed on the base and having a closed bottom, wherein a motor is disposed in the base, and characterized in that: A detachable grinding assembly is provided in the cup body, and the grinding assembly includes a static grinding head, a dynamic grinding head and a transmission shaft. The transmission shaft is rotatably supported on the static grinding head, and the dynamic grinding head is detachably mounted on the transmission shaft. A magnetic drive assembly is provided between the transmission shaft and the motor, and the dynamic grinding head is driven to rotate by the magnetic drive assembly, and the dynamic grinding head cooperates with the static grinding head to grind the food.

2. The easy-to-clean food processor according to claim 1, characterized in that: The static grinding head includes a shell and a partition arranged on the inner side of the bottom of the shell. The middle part of the transmission shaft is sealed and passes through the partition. The dynamic grinding head is located above the partition. The bottom end of the shell is provided with a bottom seal, and the lower end of the transmission shaft is connected to a magnetic drive assembly.

3. The easy-to-clean food processor according to claim 2, characterized in that: The partition is provided with a stepped hole, a shaft seal and a bearing are installed in the stepped hole, and the transmission shaft is connected with the shaft seal and the bearing.

4. The easy-to-clean food processor according to claim 2, characterized in that: A center positioning boss is provided at the center of the bottom cover, a center positioning groove is provided at the center of the bottom of the transmission shaft, the center positioning groove cooperates with the center positioning boss, and a ball is provided between the center positioning boss and the center positioning groove.

5. The easy-to-clean food processor according to claim 1, characterized in that: The upper inner wall of the static grinding head is provided with an inner circular grinding surface, and the dynamic grinding head includes a screw arranged at the lower part of the dynamic grinding head and an outer circular grinding surface arranged on the upper outer wall of the dynamic grinding head, wherein the screw cooperates with the inner wall of the shell to coarsely grind the food and drive the food to flow upward, and the inner circular grinding surface cooperates with the outer circular grinding surface to finely grind the food.

6. The easy-to-clean food processor according to claim 5, characterized in that: The inner circular grinding surface is provided with an array of protruding points; and / or the outer circular grinding surface is provided with outer edges extending obliquely up and down distributed along the circumferential direction.

7. The easy-to-clean food processor according to claim 6, characterized in that: The inclination angle of the outer edge is 5-10°; the single-side radial clearance between the inner circle grinding surface and the outer circle grinding surface is ≤0.4mm.

8. The easy-to-clean food processor according to claim 1, characterized in that: The magnetic drive assembly comprises an upper magnet plate arranged at the bottom of the transmission shaft and a lower magnet plate connected to the motor shaft. The lower magnet plate and the upper magnet plate are transmitted through non-contact magnetic field action and drive the movable grinding head to rotate.

9. The easy-to-clean food processor according to claim 1, characterized in that: The inner bottom wall of the cup body is provided with a positioning recess for positioning the bottom of the static grinding head. One of the bottom of the static grinding head and the positioning recess is provided with a rotation-stopping boss, and the other is provided with a rotation-stopping groove. The rotation-stopping boss cooperates with the rotation-stopping groove to stop rotation.

10. The easy-to-clean food processor according to claim 1, characterized in that: The easy-to-clean food processor also includes a knife seat assembly that can be replaced with the grinding assembly. The knife seat assembly includes a stationary knife seat, a moving knife shaft rotatably connected to the stationary knife seat, and a crushing knife installed on the moving knife shaft.

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