Food processor capable of improving strength of crushing knife

Abstract

The utility model discloses a food processor capable of increasing the strength of crushing knives, which comprises a crushing cup and a crushing motor, the crushing cup comprises a cup body and a crushing knife assembly arranged in the cup body, the crushing knife assembly comprises a knife shaft and at least two crushing knives axially mounted on the knife shaft, and the crushing motor drives the knife shaft and drives the crushing knives to rotate. Each crushing cutter is connected with an axial fixing structure, and the crushing cutters are axially fixed through the axial fixing structures. Due to the fact that each smashing cutter is connected with the axial fixing structure, each smashing cutter is axially fixed through the axial fixing structure, axial movement is avoided, the working intensity of the whole smashing cutter assembly can be improved, smashing noise can be reduced, and the smashing effect can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of small kitchen appliances technology, and in particular relates to food processing machines. Background Technology

[0002] Food processor blade assemblies on the market are generally made up of a single blade or multiple blades overlapping axially, with the top of the blade shaft riveted together. This stacking and fixing of one or more blades can lead to insufficient riveting strength during pulverization, causing the blades to loosen or even fall off, thus posing a safety risk.

[0003] In cases where multiple crushing blades are used, existing technologies have a solution to increase the stability of the crushing blade assembly by fixing the bottommost crushing blade separately and riveting the top of the blade shaft to stack and fix multiple crushing blades. However, after the middle crushing blades are stacked, the overall crushing axial range of the crushing blade is relatively small. To increase the axial range of the pulverizing process, there is also a technique of setting a bushing between two adjacent pulverizing blades. See patent publication number CN206792313U, which discloses a blade head for a food processor, relating to the field of food cutting device technology. The blade head includes a blade shaft, a bearing, a bearing housing, a blade shaft sealing cylinder, and a blade assembly. The blade shaft passes through the bearing and is fixedly connected to the inner ring of the bearing. The bearing housing is fixed to the outer circumference of the bearing. The blade assembly includes a first blade, a second blade, and an isolation cylinder. The cross-section of the upper end of the blade shaft is racetrack-shaped, and the top end of the blade shaft is provided with a threaded section. The axis of the first blade, the second blade, and the isolation cylinder is provided with a through hole adapted to the upper end of the blade shaft. The upper end of the blade shaft passes through the blade shaft sealing cylinder, the first blade, the isolation cylinder, and the second blade in sequence. A nut is fixed to the top end of the blade shaft, and the first blade, the isolation cylinder, and the second blade are clamped to the blade shaft sealing cylinder by the nut. However, the isolation cylinder only serves as an axial separator. During high-speed operation, the crushing blade is prone to axial movement. Long-term axial movement will cause impact between the crushing blade and the isolation cylinder, reducing the strength of the crushing blade, affecting its service life, increasing noise, and deteriorating the crushing effect. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a food processing machine that increases the working intensity of the pulverizing blade, so as to avoid increased noise and poor pulverizing effect caused by insufficient working intensity of the pulverizing blade.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A food processing machine for increasing the strength of a pulverizing blade includes a pulverizing cup and a pulverizing motor. The pulverizing cup includes a cup body and a pulverizing blade assembly disposed within the cup body. The pulverizing blade assembly includes a blade shaft and at least two pulverizing blades mounted axially on the blade shaft. The pulverizing motor drives the blade shaft and rotates the pulverizing blades. The pulverizing blades are connected to an axial fixing structure, which axially fixes the pulverizing blades.

[0007] Preferably, the axial fixing structure includes an axial fixing member that presses the crushing blade. The axial fixing member located between two adjacent crushing blades is clamped between the two crushing blades to increase the axial crushing range of the crushing blade.

[0008] Preferably, the axial fixing member is a nut, and the cutter shaft is provided with an external thread. The nut engages with the external thread and presses the crushing blade.

[0009] Preferably, the height of the nut is H, where 4mm ≤ H ≤ 10mm.

[0010] Preferably, a gasket is provided between the nut and the crushing blade.

[0011] Preferably, the pulverizing blade includes a lower pulverizing blade, a middle pulverizing blade, and an upper pulverizing blade arranged sequentially from bottom to top along the axial direction. Each of the lower pulverizing blade, the middle pulverizing blade, and the upper pulverizing blade is provided with a limiting hole. The pulverizing shaft is provided with a limiting part, and the limiting part is circumferentially limited and matched with the limiting hole.

[0012] Preferably, the lower and middle crushing blades are provided with multiple blades along the circumferential direction, and the blades of the lower and middle crushing blades are staggered in the axial direction.

[0013] Preferably, the lower and middle crushing blades are each equipped with four blades, and the blades of the upper and middle crushing blades are symmetrically staggered.

[0014] Preferably, the lower and middle crushing blades have the same outer diameter for rotation.

[0015] Preferably, the blades of the lower and middle shredders are provided with through holes.

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

[0017] 1. Because the pulverizing blades are connected to an axial fixing structure, the pulverizing blades are fixed axially. This axial fixing structure secures the corresponding pulverizing blades axially. With multiple pulverizing blades arranged axially, the corresponding blades can be reliably fixed in the axial direction, preventing them from moving axially. Since all the blades are fixed, for example, when two layers of pulverizing blades are set, the bottom blade closest to the blade shaft is first fixed to the blade shaft by the axial fixing structure. The upper blade is further fixed by the axial fixing structure of the upper blade and fits against the axial fixing structure of the bottom blade. Because the pulverizing blades are fixed and clamped by the axial fixing structure from both top and bottom, the pulverizing blade fixing structure is more reliable, preventing the pulverizing blades from moving axially. Meanwhile, the axial fixing structure further increases the strength of the crushing blade assembly. Even if one of the crushing blades becomes loose, such as the upper or bottom crushing blade, the axial fixing structure can ensure that the other crushing blades remain fixed, ensuring that they can crush normally. This guarantees the crushing effect of the crushing blade assembly, extends its service life, and, more importantly, a reliably fixed crushing blade assembly helps reduce crushing noise and improve the crushing effect.

[0018] In addition, since the axial fixing structure also has a certain radial fixing effect, it can enhance the circumferential fixing effect when combined with the original circumferential fixing structure. This helps to increase the working strength of the entire crushing blade assembly, extend its service life, reduce crushing noise, and improve the crushing effect.

[0019] 2. The axial fixing structure includes an axial fixing component that presses the pulverizing blade, applying a force to press the pulverizing blade in the axial direction, resulting in better axial fixing. Although existing technologies also use a separator to increase the distance between the upper and lower blades, improving the cleaning effect between the two blades and increasing the cutting area and food processing speed after the upper and lower blades are combined, existing multi-layer pulverizers inherently have the problem of loosening when the upper and lower blades are fixed as a single unit. Directly adding a separator would create a suspended structure between the upper and lower blades, with the lower blade as the fulcrum and the upper blade forming a cantilever structure. This makes it easier for the upper and lower blades to loosen or even separate, greatly shortening the normal service life of the pulverizer. This would cause the pulverizing performance of the pulverizer to decline rapidly, which is the main reason why this technical solution has not been applied and why no further follow-up technologies have been disclosed. Based on years of product market performance, the applicant has found that the main factor affecting the pulverizing effect of the pulverizing blade assembly is the loosening of the pulverizing blades. Therefore, the applicant proposes a fixing structure to secure each layer of pulverizing blades, completely solving the technical problem of blade loosening. Furthermore, the fixing structure increases the distance between the upper and lower pulverizing blades, increasing the pulverizing space of the pulverizing blade assembly and thus improving its pulverizing efficiency. Because each layer of pulverizing blades is individually fixed by the fixing structure, there is no suspended shearing action between adjacent pulverizing blades, avoiding the technical problem of loosening during prolonged operation. This ensures that the pulverizing blade assembly can maintain the preset pulverizing effect throughout the lifespan of the food processor.

[0020] 3. The axial clamping component increases the distance between two adjacent crushing blades, thereby increasing the axial crushing range.

[0021] 4. The axial fixing component can be a nut, which screws into the external thread on the cutter shaft and presses against the crushing blade, facilitating the fixing and disassembly of the crushing blade. The engagement of the nut and the thread not only increases the fixing of the pre-compressed crushing blade, but also provides a reverse pushing force on the crushing blade acting on the other side of the fixing direction. For example, when the nut is used to fix the lower crushing blade, the nut is tightened to a sufficient pre-tightening effect with the external thread. When the middle or upper crushing blade is installed on the nut, the upper fixing structure further pushes and compresses the nut through the middle or upper crushing blade. While further increasing the pre-tightening force of the nut, the nut will also push the middle or upper crushing blade in the opposite direction, thus enabling the lower, middle, or upper crushing blades to achieve better pre-tightening fixing.

[0022] 5. The nut needs to be at least 2.5 turns high to prevent it from loosening, but it cannot be too high to prevent the upper crushing blade from being stressed, causing severe load and sway of the entire machine structure. Therefore, the nut height is designed to be 4≤H≤10.

[0023] 6. A shim is also provided between the nut and the crushing blade. This is because during the processing, the flatness of the mating surface between the bent blade and the nut is insufficient, and the thread has a helix angle, which can also cause insufficient flatness in the thread fixing. Since the lower crushing blade is farthest from the liquid surface of the machine, it requires the largest load. If the lower crushing blade assembly has insufficient flatness (tilt), the blade balance will deteriorate, thereby increasing the overall load on the machine and reducing its lifespan. The shim ensures the flatness of the mating surface between the nut and the lower crushing blade, thus solving the above-mentioned potential problems.

[0024] 7. To improve the pulverizing effect of the pulverizing blade, the pulverizing blade of this application includes a lower pulverizing blade, a middle pulverizing blade, and an upper pulverizing blade arranged sequentially from bottom to top. In existing solutions, the upper, middle, and lower pulverizing blades are arranged adjacent to each other and stacked on the blade shaft, with the blades fixed at the top. However, as mentioned earlier, if the fixing structure of the pulverizing blade becomes loose, the upper, middle, and lower pulverizing blades will all become loose simultaneously, and the pulverizing blade will lose its pulverizing function. Furthermore, the distances between the upper, middle, and lower pulverizing blades are close to each other, and the axial height difference between the blades of the upper, middle, and lower pulverizing blades is not significant. The blades of the upper, middle, and lower pulverizing blades actually overlap in axial height, and the pulverizing space overlaps, which cannot substantially improve the pulverizing effect of the pulverizing blade. This application includes an upper, middle, and lower pulverizing blade. Each blade has an individual fixing structure that secures it to the blade shaft. This ensures that if one fixing structure becomes loose, only that blade will be affected, without impacting the stability of the other blades. For example, if the fixing structure of the upper blade becomes loose, only the blade itself will be affected, not the middle or lower blades, thus guaranteeing normal pulverizing operation. Furthermore, this application increases the axial distance between the blades by using axial fixing structures. This widens the axial distance between the upper, middle, and lower blades, allowing each blade to operate within a non-intersecting pulverizing space. This increases the pulverizing volume of the pulverizing assembly, enabling food at different heights to be pulverized simultaneously, thereby improving its pulverizing efficiency.

[0025] 8. For the aforementioned pulverizing blade assembly, increasing the axial distance between the pulverizing blades by setting an axial fixing structure can improve the pulverizing space volume of the pulverizing blade assembly. However, when the food is cut and pulverized around the pulverizing blade assembly, due to the impact of the pulverizing blades, the food will continuously change position between different pulverizing blades, such as switching between pulverizing blades of different heights. Due to gravity, the food tends to concentrate in the lower and middle pulverizing blades. Setting multiple blades increases the probability of the pulverizing blades cutting and impacting the food during rotation; and by axially offsetting the blades of the lower and middle pulverizing blades, that is, in the axial projection, the multiple blades of the middle and lower pulverizing blades do not overlap in the main pulverizing area. Thus, when the lower or middle pulverizing blade switches between pulverizing states, the food being impacted by the blades moves upward or downward, allowing it to contact the misaligned upper or lower blades and be further pulverized, thereby improving the pulverizing efficiency of the pulverizing assembly. Furthermore, because the multiple blades of the lower and middle pulverizing blades are axially staggered, cleaning dead zones are avoided between the upper and lower blades, making it easier for users to clean the pulverizing assembly and preventing food from getting stuck between the upper and lower blades. Simultaneously, this pulverizing assembly structure distributes forces more evenly in all directions during rotation, resulting in stable operation and reduced noise during pulverizing. Moreover, both the lower and middle pulverizing blades have four blades each, and the blades of the upper and middle pulverizing blades are symmetrically and staggered. If the number of blades in the lower and middle pulverizing blades is too small, the number of times the blades come into contact with the food during a single rotation will be reduced, affecting the pulverizing effect. If the number of blades is too large, the spacing between each blade in the circumferential direction will be reduced, affecting the food from entering between adjacent blades, thus affecting the pulverizing processing of the food by the lower or middle pulverizing blades. The lower and middle pulverizing blades are set with four blades, which not only ensures pulverizing efficiency, but also achieves better staggered pulverizing by staggering the upper and lower blades.

[0026] 9. As mentioned above, the lower and middle pulverizing blades bear the main pulverizing function of the pulverizing blade assembly. Simultaneously, the axial fixing structure increases the pulverizing space of the lower and middle pulverizing blades within the cup body. The blades of the lower and middle pulverizing blades are designed to have balanced axial forces, ensuring smooth rotation and improving pulverizing efficiency.

[0027] 10. During the crushing process, the crushing blade mainly relies on its cutting edge to crush and cut the food. After the food is cut by the blade, it flows further through the planar body of the blade. By providing through holes in the blade, especially in the lower and middle crushing blades, the through holes can drive the liquid flow to generate impact during rotation, pushing the food flowing through the crushing blade towards the blade edge, thereby improving the crushing efficiency of the crushing blade. In addition, the through holes also prevent the lower and middle crushing blades from forming an excessively large rotating cavity, thereby reducing the noise generated by the crushing blade assembly during operation.

[0028] The specific technical solution adopted by this utility model and its beneficial effects will be disclosed in detail in the following specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0030] Figure 1 This is an overall structural diagram of the shredder assembly in Example 1;

[0031] Figure 2 This is an exploded structural diagram of the shredder assembly in Example 1;

[0032] Figure 3 This is a cross-sectional view of the shredder assembly in Embodiment 1;

[0033] Figure 4 This is a schematic diagram showing the relative positions of the blades in the crusher assembly in Embodiment 1;

[0034] Figure 5 The top view shows the design of the lower and upper blades being installed as staggered as possible in Example 1;

[0035] Figure 6 This is a schematic diagram of the cleaning dead angle of the shredder assembly in Example 1;

[0036] Figure 7 This is an overall structural diagram of the shredder assembly in Example 2;

[0037] Figure 8 This is an overall structural diagram of the shredder assembly in Example 3;

[0038] Figure 9 This is an overall structural diagram of the shredder assembly in Example 4;

[0039] Figure 10 This is an overall structural diagram of the shredder assembly in Example 5;

[0040] Figure 11 This is an overall structural diagram of the shredder assembly in Example 6;

[0041] Figure 12 This is an overall structural diagram of the shredder assembly in Example 6;

[0042] Figure 13 This is a structural diagram of the assembly of the pulverizing cup and the pulverizing blade in Example 7;

[0043] Figure 14 This is an overall structural diagram of the shredder assembly in Example 7;

[0044] Figure 15 This is a structural diagram of the pulverizing blade in Example 7.

[0045] In the diagram: 1. Crusher assembly, 10. Shaft, 101. Axial limiting platform, 102. Lower flat part, 103. Screw part, 104. Screw inner hole, 105. Lower crusher, 11. Lower crusher riveting hole, 111. Lower crushing through hole, 112. Middle crusher, 12. Middle crusher riveting hole, 121. Middle crushing through hole, 122. Middle crushing blade, 123. Upper crusher, 13. Nut, 14. Washer, 15. Locking screw, 16. Riveting protrusion, 171. Crusher cup, 2. Detailed Implementation

[0046] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0047] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0048] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "inner," and "outer," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] This utility model provides a food processor with increased pulverizing blade strength, including a pulverizing cup and a motor. The pulverizing cup includes a cup body and a pulverizing blade assembly disposed within the cup body. Figures 1 to 15 As shown, this utility model mainly improves the crushing blade assembly. The crushing blade assembly 1 includes a blade shaft 10 and at least two crushing blades mounted axially on the blade shaft 10. A motor drives the blade shaft 10 and rotates the crushing blades. Compared with the prior art, in the crushing blade assembly of this utility model, each crushing blade is connected to an axial fixing structure, which fixes the crushing blade axially. Of course, axial fixing here refers to fixing the crushing blade by applying force in the axial direction, and is not limited to axial fixing; it also has a certain radial fixing effect.

[0051] Understandably, each shredder is connected to a circumferential fixing structure (including a radial fixing structure and a circumferential limiting structure) to ensure that the shredder shaft 10 can rotate.

[0052] Because each crushing blade is connected to an axial fixing structure, each crushing blade is axially fixed, preventing axial movement. This not only increases the working strength of the entire crushing blade assembly and extends its service life, but also helps reduce crushing noise and improve crushing effect. Furthermore, by clamping the axial fixing structure between the upper and lower crushing blades, the axial distance between the two blades is increased, thereby increasing the axial crushing space volume of the crushing blade assembly and improving crushing efficiency.

[0053] In addition, since the axial fixing structure also has a certain radial fixing effect, it can enhance the circumferential fixing effect when combined with the original circumferential fixing structure. This helps to increase the working strength of the entire crushing blade assembly, extend its service life, reduce crushing noise, and improve the crushing effect.

[0054] The motor can be installed at the bottom of the grinding cup, or it can be a separate main unit with the motor inside. The grinding cup and the main unit are separable. The blade shaft is connected to an upper coupler, and the motor shaft is connected to a lower coupler. When the grinding cup and the main unit are combined, the upper and lower couplers couple, allowing the motor to drive the blade shaft and rotate the grinding blades. Alternatively, a speed reducer can be added between the lower coupler and the motor shaft. This description only briefly describes the grinding cup, motor, and other structures of the food processor; for specific details, please refer to existing technologies.

[0055] Example 1

[0056] like Figures 1 to 6 As shown, in this embodiment, the axial fixing structure includes an axial fixing member that presses the crushing blade, applying a force to press the crushing blade in the axial direction, thus achieving a better axial fixing effect. The axial fixing member can be a nut 14. Additionally, the blade shaft 10 is provided with external threads, and the nut 14 engages with these threads to press the crushing blade, facilitating the fixing and disassembly of the crushing blade.

[0057] In one embodiment, the pulverizing blade includes a lower pulverizing blade 11, a middle pulverizing blade 12, and an upper pulverizing blade 13 arranged sequentially along the axial direction. Of course, it is understood that the middle pulverizing blade may be omitted or its number may be increased.

[0058] To achieve circumferential limiting of the pulverizing blades, the lower pulverizing blade 11, the middle pulverizing blade 12, and the upper pulverizing blade 13 are all provided with limiting holes, and the blade shaft is provided with a limiting part, which is circumferentially limited and fitted with the limiting hole. In this way, no additional circumferential fixing is required. While the axial fixing structure fixes the pulverizing blade axially, the circumferential limiting structure simultaneously fixes the pulverizing blade radially and circumferentially. Alternatively, radial fixing can be achieved simultaneously through the interference fit between the limiting part and the limiting hole; that is, the limiting part and the limiting hole serve as a circumferential fixing structure, simultaneously including a radial fixing structure and a circumferential limiting structure. Preferably, the limiting part and the limiting hole can adopt a common flat fit structure, i.e., the limiting hole is a flat hole, and the limiting part is a flat part, with a lower flat part 102 corresponding to the lower pulverizing blade 11 and an upper flat part 104 corresponding to the upper pulverizing blade 13. Furthermore, a screw part 103 is provided between the lower flat part 102 and the upper flat part 104, and the screw part is provided with external threads.

[0059] For the axial fixing structure of the lower crushing blade 11, the blade shaft 10 is provided with an axial limiting platform 101. The lower side of the lower crushing blade 11 is limited by the axial limiting platform 101, and the upper side of the lower crushing blade 11 is pressed by an axial fixing member. The axial fixing member increases the distance between the lower crushing blade 11 and the middle crushing blade 12, thereby increasing the axial crushing range.

[0060] Furthermore, a washer 15 is provided between the nut 14 and the lower crusher 11. This is because during the processing, the flatness of the bend blade and the nut is insufficient, and the thread has a helix angle, so the thread fixing may also have insufficient flatness. Since the lower crusher is farthest from the liquid surface of the machine, it requires the largest load. If the lower crusher assembly has insufficient flatness (tilt), the blade balance will be poor, thereby increasing the load on the whole machine and reducing the life of the whole machine. The washer can ensure the flatness of the fit between the nut and the lower crusher, thereby solving the above-mentioned possible problems.

[0061] The middle crushing blade 12 and the upper crushing blade 13 are stacked, without any additional structure in between; that is, the bottom surfaces of the middle crushing blade 12 and the upper crushing blade 13 are in contact. The middle crushing blade 12 and the upper crushing blade 13 are stacked and installed on the cutter shaft, and then the top of the cutter shaft is riveted, thereby assembling the entire crushing blade assembly. That is, the axial fixing structure corresponding to the upper crushing blade is a riveting structure, and the upper crushing blade actually acts as the axial fixing component of the middle crushing blade. While the upper crushing blade is fixed by riveting the top of the cutter shaft or by other means, the upper crushing blade and the nut cooperate to fix the middle crushing blade axially.

[0062] like Figure 3 As shown, the lower crusher not only bears axial force through the nut, but also the middle and upper crushers can be riveted together to apply a certain axial force to the lower crusher, ensuring that the lower crusher, which bears the greatest load, will not loosen or even fall off.

[0063] like Figure 4 As shown, while ensuring the strength of the entire crushing blade assembly, this solution provides an expansion of the crushing axial range. In the figure, H1 is the crushing axial height of the lower crushing blade, H2 is the crushing axial height of the middle and upper crushing blades, and H is the total height of the nut and washer (i.e., the distance between the middle and upper crushing blades). The original ordinary crushing blade assembly only has one crushing blade, i.e., the lower crushing blade, and the crushing axial height is H1. The current crushing axial height is H1+H2+H (although the axial range H is not actually crushed by the crushing blade, since the area near the crushing blade is a strong turbulent flow region, the distance H between the middle and upper crushing blades can be approximated as the actual crushing range of the blades), thereby optimizing the crushing effect.

[0064] Preferably, the nut needs a height of at least 2.5 turns to prevent it from loosening, but it cannot be too high to prevent stress on the upper crushing blade, which would cause severe load and sway of the entire machine structure. Therefore, in this embodiment, the design is 4≤H≤10; 4≤H1≤20; 4≤H1≤30.

[0065] Preferably, at least two crushing blades are arranged axially from top to bottom, with the number of blades increasing sequentially. In this embodiment, the lower crushing blade 11 has four blades, the middle crushing blade 12 has three blades, and the upper crushing blade 13 is U-shaped with two blades symmetrically arranged.

[0066] like Figure 5 and Figure 6 As shown, the bottom surface of the shredder blades is a cleaning dead angle S. Because a middle shredder blade and an upper shredder blade are added to the upper part compared to a regular shredder blade assembly, the top surface of the original lower shredder blade also becomes a cleaning dead angle due to the obstruction of the middle and upper shredder blades. Therefore, as shown... Figure 5 As shown, the blades of two adjacent axial crushing blades are staggered in the circumferential direction. This staggering does not necessarily mean that they are completely staggered. That is, the lower crushing blade and the middle crushing blade are designed to be staggered as much as possible, and the upper crushing blade and the middle crushing blade are designed to be staggered as much as possible. In this top view, the less overlap area between the lower crushing blade and the upper and middle crushing blades, the better.

[0067] Example 2

[0068] like Figure 7 As shown, compared with the first embodiment, this embodiment adds a middle crushing blade 12 to the three crushing blades (lower crushing blade, middle crushing blade, and upper crushing blade), thus providing a total of four crushing blades.

[0069] To secure the additional intermediate crusher blade, a nut is added between the two intermediate crusher blades to axially fix the lower intermediate crusher blade and provide axial downward positioning for the upper intermediate crusher blade. At the same time, this intermediate crusher blade is in contact with the bottom surface of the upper crusher blade. That is, the upper crusher blade actually acts as an axial fixing component for the intermediate crusher blade. While the upper crusher blade is fixed by riveting or other means on the top of the blade shaft, the intermediate crusher blade is axially fixed by the cooperation of the upper crusher blade and the nut.

[0070] Understandably, the number of shredders can be set as needed, and is not limited to a setting of three or four shredders.

[0071] Example 3

[0072] like Figure 8 As shown, due to the existence of cleaning dead corners, in order to facilitate cleaning, this embodiment provides a detachable crushing blade solution. The upper crushing blade does not use a riveted non-detachable solution. The axial fixing structure corresponding to the upper crushing blade is achieved by adding a screw inner hole 105 to the upper end of the blade shaft. The screw inner hole is connected to the locking screw 16, and the upper crushing blade is pressed tight by the locking screw.

[0073] In addition, as a variation of the axial fixing structure for the upper crushing blade, the upper crushing blade can also be pressed by setting an external thread at the upper end of the blade shaft and connecting the external thread to a locking nut.

[0074] Example 4

[0075] like Figure 9As shown, while maintaining the principle of keeping the lower and upper shredders as far apart as possible, the number of blades in the middle shredder 12 is changed from 4 to 3.

[0076] Example 5

[0077] like Figure 10 As shown, while maintaining the principle of keeping the lower and upper shredders as far apart as possible, the middle shredder 12 is changed from 4 blades to 2 blades.

[0078] Furthermore, let's elaborate on the blade avoidance principle: the number of blades in the lower shredder should be as much as possible than the number of blades in the middle shredder, and the number of blades in the lower shredder should be divisible by the number of blades in the middle shredder. There is no limit to the specific number of blades.

[0079] Understandably, the number of blades in other shredders can also be varied.

[0080] Example 6

[0081] like Figure 11 and Figure 12 As shown, in this embodiment, the middle crushing blade 12, the riveting component 17, the gasket 15, and the lower crushing blade 11 are considered as a whole and installed on the blade shaft 10. Then, the upper crushing blade 13 is installed and riveted to the blade shaft. Specifically, how it is considered a whole is explained: the riveting component 17 has riveting protrusions 171 on both its upper and lower sides, which are riveted to the middle blade riveting hole 121 and the lower blade riveting hole 111 on the middle and lower crushing blades, respectively. The gasket 15 is then fixed, thus forming a whole. Of course, the whole may also include the upper crushing blade 13, which is riveted and fixed to the blade shaft. During operation, the multi-layer riveting provides additional pressure, making the entire crushing blade assembly more stable and reliable.

[0082] It is understood that axial fixing structures are not limited to the above-mentioned nut fixing and riveting fixing methods; for example, they can also be welded.

[0083] Example 7.

[0084] like Figure 13-15 As shown, in this embodiment, the pulverizing blade assembly is disposed at the bottom of the pulverizing cup 2. The pulverizing blade assembly includes a blade shaft 10 and a lower pulverizing blade 11, a middle pulverizing blade 12, and an upper pulverizing blade 13 axially mounted on the blade shaft 10. The lower pulverizing blade 11, the middle pulverizing blade 12, and the upper pulverizing blade 13 are arranged sequentially from bottom to top along the axial direction of the blade shaft 10. The axial fixing structure includes an axial fixing member that presses the pulverizing blade. Preferably, the axial fixing member is a nut 14. Simultaneously, the blade shaft 10 is provided with external threads, and the nut 14 engages with the external threads, pressing the pulverizing blade to achieve fixation.

[0085] For the axial fixing structure of the lower crushing blade 11, an axial limiting platform 101 is provided on the blade shaft 10. The lower side of the lower crushing blade 11 is limited by the axial limiting platform 101, and the upper side of the lower crushing blade is pressed by the nut 14. The nut 14 increases the distance between the lower crushing blade 11 and the middle crushing blade 12, thereby increasing the crushing range of the crushing blade assembly in the axial direction.

[0086] Furthermore, a washer 15 is provided between the nut 14 and the lower crushing blade 11. The middle crushing blade 12 and the upper crushing blade 13 are stacked without any additional structure in between, meaning the bottom surfaces of the middle crushing blade 12 and the upper crushing blade 13 are directly attached. The middle crushing blade 12 and the upper crushing blade 13 are stacked and mounted on the blade shaft 10, and then the top of the blade shaft 10 is riveted to complete the assembly of the entire crushing blade assembly. In this assembly, the middle crushing blade 12 relies on both the nut 14 and the upper crushing blade 13 for axial fixation, while the upper crushing blade 13 relies on the middle crushing blade 12 and the top riveting structure of the blade shaft 10, ensuring that both the middle crushing blade 12 and the upper crushing blade 13 are stably and reliably fixed axially.

[0087] The diameter of the crushing space formed by the lower crushing blade 11 within the crushing cup 2 is D1. Preferably, the outer diameter of the rotation of the middle crushing blade 12 is the same as that of the lower crushing blade 11, meaning the diameter of the crushing space formed by the middle crushing blade 12 within the crushing cup 2 is also D1. Both the lower crushing blade 11 and the middle crushing blade 12 are provided with four blades, and each blade of the lower crushing blade 11 is provided with a vertically penetrating lower crushing through hole 112, and each blade of the middle crushing blade 12 is provided with a vertically penetrating middle crushing through hole 122. The four blades of the lower crushing blade 11 and the middle crushing blade 12 are evenly distributed circumferentially, and the blades of the lower crushing blade 11 and the middle crushing blade 12 are axially staggered. Preferably, as shown... Figure 14 As shown, in the axial projection, the eight blades of the lower crusher 11 and the middle crusher 12 are evenly distributed circumferentially, such that the blades of the lower crusher 11 and the middle crusher 12 are misaligned with each other in the axial direction.

[0088] The blades of the lower pulverizer 11, the middle pulverizer 12, and the upper pulverizer 13 have different bending angles, causing the pulverizer assembly 1 to form a pulverizing height HV1 within the pulverizer cup 2. Combined with the fact that the lower pulverizer 11 and the middle pulverizer 12 have the same outer diameter of rotation, the pulverizer assembly 1 forms a pulverizing space with a volume of V1 within the pulverizer cup 2. It should be noted that since the upper pulverizer 13 typically has a smaller outer diameter of rotation for pulverizing food in the center, and the middle pulverizer 12 may have an upwardly bent blade that overlaps with the upper pulverizer 12 axially, the volume of the pulverizing space here is simply calculated using the rotational radii of the lower and middle pulverizers and the blade height of the pulverizer assembly, rather than referring to the space occupied by the pulverizer assembly itself. The equivalent inner diameter of the pulverizing chamber inside the pulverizer cup 2 for holding and processing food is D, and the equivalent height is HV. Therefore, the equivalent inner volume formed by the pulverizing chamber of the pulverizer cup 2 is V, preferably 0.01V ≤ V1 ≤ 0.1V. If the proportion of the pulverizing blade assembly within the pulverizing chamber is too small, the amount of food pulverized simultaneously during rotation will be insufficient, inevitably affecting the pulverizing efficiency. Since the pulverizing blade assembly relies on high-speed rotation to collide and cut the food, it causes the food to rotate within the pulverizing cup during operation. Due to centrifugal force, the fluid on the sidewalls of the pulverizing chamber rises and approaches the upper port of the pulverizing cup. Therefore, if the proportion of the pulverizing blade assembly within the pulverizing chamber is too large, when rotating at high speed, it will push more food towards the chamber wall, easily causing fluid food to overflow from the upper port of the pulverizing cup, affecting the normal operation of the food processor. Reducing the rotation speed of the pulverizing blade assembly to reduce overflow will decrease its pulverizing efficiency, potentially preventing it from fully completing the pulverizing process and thus affecting the pulverizing effect.

[0089] like Figure 15As shown, a central pulverizing blade 123 is provided on the front side of the rotating direction of the central pulverizing blade 12. Correspondingly, both the lower and upper pulverizing blades are provided with pulverizing blades, and the pulverizing blades of the lower, central, and upper pulverizing blades are located on the same side. When the central pulverizing blade 12 rotates at high speed and uses the central pulverizing blade 123 to complete the pulverizing process of the food, the food being cut will flow over the upper and lower sides of the blade of the central pulverizing blade 12, and then move upward or downward under the drive of the fluid, further contacting and being pulverized by the upper or lower pulverizing blades. However, such a flow speed is slow, which affects the efficient pulverizing process of the pulverizing blade assembly. Therefore, this application further provides through-holes 122 in the middle of the multiple blades of the central pulverizing blade 12. Correspondingly, the multiple blades of the lower pulverizing blade are provided with similar pulverizing through-holes. In this embodiment, since the rotating diameter of the upper pulverizing blade is relatively small, no similar pulverizing through-holes are provided. It is understood that if an upper pulverizing blade with a sufficiently large rotating diameter is provided, the upper pulverizing blade can also be provided with similar pulverizing through-holes. During the rotation of the medium-sized pulverizing blade 12, the sidewall of the medium-sized pulverizing through-hole 122 creates turbulence on the rear side of the medium-sized pulverizing blade 123, pushing the food flowing on both sides of the blade of the medium-sized pulverizing blade 12 rapidly upwards and downwards away from the medium-sized pulverizing blade to enter the next pulverizing process, thereby improving the pulverizing efficiency of the pulverizing blade assembly. Simultaneously, during the high-speed rotation of the medium-sized pulverizing blade 12, the downstream fluid formed by the rotation of the blade of the medium-sized pulverizing blade 12 creates a vacuum cavity. The rupture of this cavity produces significant noise. By setting the medium-sized pulverizing through-hole 122, the formation of the vacuum cavity is hindered, or the volume of the vacuum cavity is reduced, thereby reducing the operating noise of the food processor.

[0090] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A food processing machine for increasing the strength of pulverizing blades, comprising a pulverizing cup and a pulverizing motor, wherein the pulverizing cup includes a cup body and a pulverizing blade assembly disposed within the cup body, the pulverizing blade assembly includes a blade shaft and at least two pulverizing blades axially mounted on the blade shaft, and the pulverizing motor drives the blade shaft and rotates the pulverizing blades, characterized in that, The shredder is connected to an axial fixing structure, which fixes the shredder axially.

2. The food processing machine for increasing the strength of the shredder blade according to claim 1, characterized in that, The axial fixing structure includes an axial fixing member that presses the crushing blade. The axial fixing member located between two adjacent crushing blades is clamped between the two crushing blades to increase the axial crushing range of the crushing blade.

3. A food processing machine for increasing the strength of the shredder blade according to claim 2, characterized in that, The axial fixing component is a nut, and the cutter shaft is provided with an external thread. The nut engages with the external thread and presses the crushing blade.

4. A food processing machine for increasing the strength of the shredder blade according to claim 3, characterized in that, The height of the nut is H, where 4mm ≤ H ≤ 10mm.

5. A food processing machine for increasing the strength of the shredder blade according to claim 4, characterized in that, A gasket is provided between the nut and the crusher blade.

6. A food processing machine for increasing the strength of the shredder blade according to claim 1, characterized in that, The pulverizing blade includes a lower pulverizing blade, a middle pulverizing blade, and an upper pulverizing blade arranged sequentially from bottom to top along the axial direction. Each of the lower pulverizing blade, the middle pulverizing blade, and the upper pulverizing blade is provided with a limiting hole. The pulverizing shaft is provided with a limiting part, and the limiting part is circumferentially limited and matched with the limiting hole.

7. A food processing machine for increasing the strength of the shredder blade according to claim 6, characterized in that, The lower and middle crushing blades are provided with multiple blades along the circumference, and the blades of the lower and middle crushing blades are offset in the axial direction.

8. A food processing machine for increasing the strength of the shredder blade according to claim 7, characterized in that, The lower and middle crushing blades are each equipped with four blades, and the blades of the upper and middle crushing blades are symmetrically staggered.

9. A food processing machine for increasing the strength of the shredder blade according to claim 6, characterized in that, The lower and middle shredders have the same outer diameter for rotation.

10. A food processing machine for increasing the strength of a shredder blade according to claim 6, characterized in that, The blades of the lower and middle shredders are provided with through holes.

Images