Stirring knife assembly of food processor

Abstract

The utility model discloses a stirring knife assembly of a food processing machine, the stirring knife assembly comprises a knife shaft and a plurality of knife groups which are arranged at the end part of the knife shaft and are arranged in a stacked manner, and knife blades of the knife group located at the upper part are bent upwards and extend to form a plurality of first type knife blades; the lower knife group comprises a second type of knife blades which are bent and extend downwards and a third type of knife blades which are bent and extend downwards, and the tail ends of the third type of knife blades are bent and extend again in the horizontal direction; through the combined design of the upper and lower layered knife groups, the first type of knife blades are bent upwards to stir upper-layer food materials, and the second and third type of knife blades extend downwards and horizontally to cover middle and lower-layer areas, so that a three-dimensional cutting network is formed, and the contact area between the food materials and the knife blades is remarkably increased; the structure of the third type of blades can also enlarge the radial crushing space of the blades in the whipping cavity, and the tail ends of the blades can disturb the area of the lower layer, so that the food materials are prevented from being stacked at the bottom, and the cutting and stirring effects are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of food processing machines, and in particular relates to a stirring blade assembly for a food processing machine. Background Technology

[0002] The mixing blade assembly includes blades and a shaft. The blades are fixed to the shaft and extend radially from the fixed end of the shaft. They are typically symmetrical or evenly distributed straight blades with no gradual optimization in overall dimensions. During mixing and cutting, the motor drives the shaft to rotate at high speed, and the blades pulverize the food through planar cutting or impact. The shortcomings of existing mixing blade assemblies are: 1. The blades are concentrated at the same height at the fixed end of the shaft and lack a layered design. Relying on a single cutting surface, the contact area with the food is insufficient, making it impossible to fully cut and mix the food. In addition, the blades cannot cover the vertical space of the mixing chamber, causing food to easily accumulate at the bottom without being pulverized. When processing viscous foods such as smoothies and thick soups, the food easily adheres to the blade surface, resulting in poor food flowability, insufficient mixing effect, and low efficiency; 2. Traditional straight blades are prone to stress concentration under high loads (such as ice cubes or hard foods), leading to blade bending or breakage. Summary of the Invention

[0003] (a) Purpose of the utility model

[0004] To overcome the above shortcomings, the purpose of this utility model is to provide a mixing blade assembly for a food processing machine, so as to solve the technical problems of unsatisfactory mixing effect, low efficiency, and bent or broken blades in existing mixing blade assemblies.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] A mixing blade assembly for a food processor includes: a blade shaft and a plurality of blade groups disposed at the end of the blade shaft and stacked thereon, wherein the blades of the upper blade group are bent upward and extended to form a plurality of first type blades, and the blade group of the lower blade group includes: a second type blade that is bent downward and extended, and a third type blade that is bent downward and extended, and then bent and extended again in a horizontal direction at its end, wherein each type of blade has a blade edge on one side and a blade back on the other side;

[0008] Through the combined design of upper and lower layered blade sets, the first type of blades bends upward to agitate the upper layer of ingredients, while the second and third types of blades extend downward and horizontally to cover the middle and lower layers, forming a three-dimensional cutting network. This significantly increases the contact area between the ingredients and the blades. Furthermore, the structure of the third type of blades increases the radial grinding space within the mixing chamber and allows the blades to agitate the lower layer at their ends, preventing ingredient accumulation at the bottom. This allows the ingredients to be cut and agitated multiple times, improving the cutting and mixing effect, especially for grinding powdered ingredients. In some embodiments, the lower blade set further includes multiple first-type blades.

[0009] The lower blade assembly adds a first type of blade, which works in conjunction with the first type of blade in the upper blade assembly to further agitate the upper ingredients.

[0010] In some embodiments, the third type of blade includes, in sequence: a first bent portion bent downward, a first extended segment extending downward, a second bent portion bent horizontally, and a second extended segment extending horizontally, wherein one side of the first and second extended segments is a blade edge and the other side is a blade back.

[0011] The three-section bending design also enables the third type of blade to have both vertical cutting and horizontal shearing functions. The first extension cuts into the food at an inclined angle, reducing the initial impact force; the second extension extends horizontally to lengthen the cutting path. The dual effect improves the crushing efficiency, and the second extension also increases the disturbance effect on the food below. At the same time, the multi-section bending disperses stress and reduces the risk of blade breakage.

[0012] In some embodiments, the first, second, and third type blades protrude outward at the bend position on one side of the blade back to form a reinforced turbulence section;

[0013] The raised, reinforced turbulence section enhances the bending strength of the blade root through geometric reinforcement, preventing deformation under high loads. At the same time, this structure further increases the turbulence effect, enhances the fluidity of food during the mixing and cutting process, and improves the pulverizing effect.

[0014] In some embodiments, the blades of the first, second, and third types of blades form a beveled structure;

[0015] By designing the blade with an outward-convex bevel structure, the blade length is increased, expanding the pulverizing area. This is especially beneficial for tearing and breaking down fibrous ingredients. In addition, it allows the cutting trajectory to expand in a spiral, propelling the ingredients to rotate during the mixing process and improving pulverizing efficiency.

[0016] In some embodiments, the inclined surface of the first type of blade is arranged downwards, and the inclined surface of the blades of the second type and the third type of blade is arranged upwards;

[0017] The differentiated inclined plane creates a two-way fluid dynamics effect, enabling the food to tumble three-dimensionally within the cavity, improving the uniformity of crushing by more than 40%.

[0018] In some embodiments, the angle between the first extension segment and the horizontal line is α, where 15°≤α≤75°;

[0019] An angle less than 15° cannot adequately mix and cut the ingredients in the lower layer, resulting in poor pulverization. An angle greater than 75° cannot adequately push the ingredients to spread towards the edge of the mixing chamber.

[0020] In some embodiments, the first type of blade includes radially interconnected and sequentially distributed: an upwardly bent first bend and an upwardly extending third extension, wherein the angle between the third extension and the horizontal line is β, 15°≤β≤90°;

[0021] The β angle controls the lifting height of the upper blade. When β=15°, the food throwing height reaches 75% of the effective space of the cavity, avoiding the blind spot at the top. When β=90°, it can pierce the surface of frozen food and reduce the starting load of the motor.

[0022] In some embodiments, the profiles of the first, second, and third types of blades gradually narrow from the direction close to the blade axis away from the blade axis to form a sharp-angled structure;

[0023] The pointed design increases the linear velocity at the blade tip by 15%-20%, creating a local high-pressure impact zone that quickly crushes hard ingredients such as nuts and ice. At the same time, the turbulence generated by the pointed wake prevents thick ingredients from sticking to the blade surface. Attached Figure Description

[0024] Figure 1 This is a first-view structural schematic diagram of the stirring blade assembly of the food processing machine of this utility model;

[0025] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0026] Figure 3 This is a second-view structural schematic diagram of the stirring blade assembly of the food processing machine of this utility model;

[0027] Figure 4 This is a top view of the mixing blade assembly of the food processing machine of this utility model;

[0028] Figure 5 This is a schematic diagram showing the angles of the first type of blade and the third type of blade in the mixing blade assembly of the food processing machine of this utility model;

[0029] Figure 6 This is a third-view structural schematic diagram of the stirring blade assembly of the food processing machine of this utility model;

[0030] Figure 7 This is a structural diagram of the mixing blade assembly of the food processing machine of this utility model, showing the shape of the blade.

[0031] Figure label:

[0032] 1. Type 1 blade; 2. Type 2 blade; 3. Type 3 blade; 301. First bend; 302. First extension; 303. Second bend; 304. Second extension; 4. Blade shaft; 5. Blade edge; 6. Blade back; 7. Reinforcing turbulence section. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0034] The present invention provides a mixing blade assembly for a food processing machine, comprising: a blade shaft 4 and multiple blade groups disposed at the end of the blade shaft 4 and stacked thereon, wherein the blades of the upper blade group are bent upward to form and extend to form multiple first-type blades 1, and the blade group of the lower blade group includes: second-type blades 2 bent downward and extended, and third-type blades 3 bent downward and extended, and then bent and extended again in the horizontal direction at the end, wherein each type of blade has a blade edge 5 on one side and a blade back 6 on the other side.

[0035] Preferably, the lower blade assembly can also be equipped with multiple first-type blades 1, which cooperate with the first-type blades 1 of the upper blade assembly to further agitate the upper food ingredients.

[0036] Specifically, the upper blade group forms two first-type blades 1, and the lower blade group forms four blades. The two opposite blades are two first-type blades 1, and the other two opposite blades are a second-type blade 2 and a third-type blade 3.

[0037] Specifically, the third type of blade 3 includes radially interconnected and sequentially distributed components: a first bent portion 301 bent downwards, a first extension segment 302 extending downwards, a second bent portion 303 bent horizontally, and a second extension segment 304 extending horizontally, wherein one side of the first and second extension segments 302 and 304 is a blade edge 5, and the other side is a blade back 6.

[0038] Specifically, the difference in bending direction between the upper and lower blades creates a multi-dimensional cutting path, increasing the contact area with the food and improving pulverization efficiency. During the mixing and cutting process, the second extension 304 of the lower third-type blade 3 can also push the food towards the edge of the mixing chamber, enhancing the disturbance effect. The upward bending of the upper blades can drive the food upward and then guide it back down, forming a cyclical mixing process and avoiding local accumulation. The combination of the first, second, and third types of blades 1, 2, and 3 can cover different pulverization scenarios (such as impact of hard food and mixing of fluid food), achieving improved versatility.

[0039] Preferably, the first, second, and third type blades 1, 2, and 3 protrude outward at the bend on one side of the blade back 6 to form a reinforced flow-deflecting section 7. Taking the third type blade 3 as an example, the reinforced flow-deflecting section 7 protrudes outward at its first bend 301 on the side of the blade back 6. The protruding structure serves both as a reinforcing rib to improve the bending strength of the blade (increasing the load capacity by more than 30%) and as a deflector to break the unidirectional movement of the food. The first and second type blades 1 and 2 also have bends (such as the third bend of the first type blade 1) and extensions, and the reinforced flow-deflecting section 7 is located at the bend. The detailed structure of the first and second type blades 1 and 2 will not be elaborated here.

[0040] Preferably, the blades 5 of the first, second, and third type blades 1, 2, and 3 form a beveled structure. The beveled blades 5 form a wedge-shaped cutting angle, which reduces the initial cutting resistance, lengthens the blade, and expands the crushing area. This is especially beneficial for tearing and decomposing fibrous foods (such as celery). In addition, the arc-shaped contour of the convex blades 5 generates centripetal force, which pushes the food to gather towards the center of the blade, improving the repeated crushing rate.

[0041] Preferably, in this application, the first type of blade 1 faces downwards, while the second and third type blades 2 and 3 face upwards. In this way, the upper blades cut downwards and the lower blades cut upwards, forming a counter-pulverizing force, reducing the particle size of the food to the millimeter level. In addition, the difference in direction forces the food to move back and forth in the vertical direction, reducing the pulverizing time by about 40% (compared to traditional unidirectional blades).

[0042] In this application, the angle α between the first extension segment 302 and the horizontal line is optimized to 15°-75°, and the angle β between the third extension segment and the horizontal line is optimized to 15°-90°.

[0043] α is optimized to 15°-75°: if the angle is less than 15°, the ingredients in the lower layer cannot be fully stirred and cut, resulting in poor crushing effect; if the angle is greater than 75°, the ingredients cannot be pushed to spread to the edge of the mixing chamber.

[0044] β is optimized to 15°-90°: The β angle controls the lifting height of the upper blade. When β=15°, the food throwing height reaches 75% of the effective space of the cavity, avoiding the top blind spot. When β=90°, it can pierce the surface of frozen food and reduce the starting load of the motor.

[0045] Preferably, the first type of blade 1 has a pointed angle structure, which has the following advantages:

[0046] It can concentrate pressure to break through: the sharp-angled structure generates higher pressure per unit area, quickly breaking up large pieces of food (such as frozen fruit).

[0047] Anti-tangling design: Sharp edges reduce the surface area of ​​the blade, reducing the probability of tangling with fibrous ingredients (such as meat tendons).

[0048] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A mixing blade assembly for a food processing machine, characterized in that, include: The blade shaft (4) and multiple blade groups arranged and stacked at the end of the blade shaft (4) are provided. The blades of the upper blade group are bent upward and extended to form multiple first-type blades (1). The lower blade group includes: second-type blades (2) bent downward and extended, and third-type blades (3) bent downward and extended, with the end bent and extended again in the horizontal direction. Each type of blade has a cutting edge (5) on one side and a back of the blade (6) on the other side.

2. The mixing blade assembly of the food processing machine according to claim 1, characterized in that, The blade assembly located below also includes: a plurality of blades of the first type (1).

3. The mixing blade assembly of the food processing machine according to claim 1, characterized in that, The third type of blade (3) includes, in sequence: a first bent portion (301) bent downward, a first extension segment (302) extending downward from the first bent portion (301), a second bent portion (303) connected to the first extension segment (302) and bent horizontally, and a second extension segment (304) extending horizontally.

4. The mixing blade assembly of the food processing machine according to claim 3, characterized in that, The first, second and third type blades (1, 2, 3) protrude outward at the bend position on one side of the blade back (6) to form a reinforced turbulence section (7).

5. The mixing blade assembly of the food processing machine according to claim 1, characterized in that, The blades (5) of the first, second and third types of blades (1, 2, 3) form a beveled structure.

6. The mixing blade assembly of the food processing machine according to claim 5, characterized in that, The blade (5) of the first type of blade (1) is set with its blade facing downward, while the blade (5) of the second type of blade (2) and the third type of blade (3) is set with its blade facing upward.

7. The mixing blade assembly of the food processing machine according to claim 3, characterized in that, The angle between the first extension segment (302) and the horizontal line is α, where 15°≤α≤75°.

8. The mixing blade assembly of the food processing machine according to claim 3, characterized in that, The first type of blade (1) includes, in sequence: an upwardly bent third bend, and a third extension segment connected to the third bend and extending upward, wherein the angle between the third extension segment and the horizontal line is β, 15°≤β≤90°.

9. The mixing blade assembly of the food processing machine according to claim 1, characterized in that, The profiles of the first, second, and third types of blades (1, 2, 3) gradually narrow from the direction close to the blade axis (4) to the direction away from the blade axis (4), forming a sharp-angled structure.

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