Knife assembly structure and stirrer

Abstract

The utility model discloses a cutter assembly structure and a stirrer, and relates to the technical field of stirrers, the cutter assembly structure is used for being arranged on a cutter holder of the stirrer, the cutter assembly structure comprises an upper blade, a middle blade, a lower blade and a cutter shaft, and the upper blade, the middle blade and the lower blade are sequentially arranged on the cutter shaft from top to bottom; the two ends of the upper blade are bent upwards, the middle blade is straightly arranged, the lower blade is bent downwards along the shape trend of the inner side surface of the tool apron, and the upper blade, the middle blade and the lower blade completely coincide after rotating around the tool shaft by 180 degrees. By adopting the technical scheme, the lower blade is bent downwards along the shape trend of the surface of the inner side of the tool apron, the middle blade is straight, and the two ends of the upper blade are bent upwards, so that multi-blade multi-angle three-dimensional stirring is realized, the stirring effect is improved, and meanwhile, the upper blade, the middle blade and the lower blade are arranged in a complete overlapping manner by rotating around the tool shaft by 180 degrees, so that the stirring efficiency is improved. The overall dynamic balance during rotation of the cutter assembly structure is achieved, and vibration and noise during whipping are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of mixer technology, specifically to a blade assembly structure and a mixer. Background Technology

[0002] As people's living standards improve, many different types of blenders have appeared on the market. Blenders can include meat grinders, soy milk makers, juicers, food processors, baby food makers, or high-speed blenders, etc., which are machines for crushing and blending food.

[0003] Currently, some blender products on the market have defects such as insufficient blades, which cannot form all-around angle mixing and poor mixing effect, or excessive blades, but the angle is not matched with the inside of the cup, resulting in poor mixing effect. In addition, there are defects such as unbalanced blade components, which cause large vibration and noise. Utility Model Content

[0004] The purpose of this invention is to solve the problems of existing mixer blade assemblies having too few blades, resulting in poor mixing effect, or too many blades with mismatched angles with the inside of the cup, resulting in poor mixing effect, and imbalance of the blade assembly leading to high vibration and noise. This invention provides a blade assembly structure and a mixer.

[0005] The first aspect of this utility model provides a blade assembly structure. The mixer includes a blade holder, and the blade assembly structure is disposed on the blade holder. The blade assembly structure includes an upper blade, a middle blade, a lower blade, and a blade shaft. The upper blade, middle blade, and lower blade are arranged sequentially on the blade shaft from top to bottom.

[0006] The upper blade is bent upwards at both ends, the middle blade is straight, and the lower blade is bent downwards along the inner surface of the tool holder. The upper, middle, and lower blades completely overlap after rotating 180° around the tool axis.

[0007] In some optional embodiments of the first aspect of this utility model, the upper blade includes an upper blade body and a first upper blade and a second upper blade extending to both sides of the upper blade body and bending upward, wherein the first upper blade and the second upper blade are each provided with an upper blade cutting edge facing the rotation direction of the blade shaft.

[0008] In some optional embodiments of the first aspect of this utility model, the angle α formed between the first upper blade or the second upper blade and the plane containing the upper blade body is 60-65°.

[0009] In some optional embodiments of the first aspect of this utility model, one side of the cutting edge of the first upper blade and the second upper blade is offset in the opposite direction to the rotation direction of the blade axis, and the offset angle β is 35-40°.

[0010] In some optional implementation forms of the first aspect of the utility model, the middle blade includes a middle blade body and first and second middle blades extending from the middle blade body to opposite sides thereof, and the first and second middle blades are each provided with a middle blade cutting edge facing the rotation direction of the blade shaft.

[0011] In some optional implementation forms of the first aspect of the utility model, the lower blade includes a lower blade body and first and second lower blades extending from the lower blade body to opposite sides thereof and being bent downward, and the first or second lower blade forms an angle γ of 50-60° with the plane in which the lower blade body lies.

[0012] In some optional implementation forms of the first aspect of the utility model, the first and second lower blades are each provided with a third and fourth lower blade extending from the side away from the lower blade body, and the third and fourth lower blades are respectively bent toward the outside of the first and second lower blades.

[0013] In some optional implementation forms of the first aspect of the utility model, the third lower blade forms an angle δ of 24-28° with the plane in which the first lower blade lies or the fourth lower blade forms an angle δ of 24-28° with the plane in which the second lower blade lies.

[0014] In some optional implementation forms of the first aspect of the utility model, the first, second, third and fourth lower blades are each provided with a lower blade cutting edge facing the rotation direction of the blade shaft.

[0015] The second aspect of the utility model provides a blender, which includes a cup body and the blade assembly structure as described above, the blade seat of the blender is arranged at the bottom of the blending container, and the blending container is provided with a turbulence rib for cooperating with the blade assembly structure to stir.

[0016] After the above technical scheme is used, the utility model has the following beneficial effects:

[0017] The utility model discloses a kind of blade assembly structure and blender, and the blade assembly structure includes upper blade, middle blade, lower blade and blade shaft, upper blade, middle blade and lower blade are sequentially arranged on blade shaft from top to bottom, the both ends of upper blade are bent upwards, middle blade is straight, lower blade is bent downwards along the shape of the inner surface of blade seat, upper blade, middle blade and lower blade are completely coincident after rotating 180 ° around blade shaft.The both ends of upper blade are bent upwards by the shape of the inner surface of blade seat being bent downwards along lower blade, middle blade is straight, so that multi-blade multi-angle three-dimensional whipping is realized, and stirring effect is improved, and by the upper blade, middle blade and lower blade are completely coincidently arranged after rotating 180 ° around blade shaft, i.e. upper blade, middle blade and lower blade are symmetric at both ends of blade shaft, overall dynamic balance when blade assembly structure rotates is realized, and vibration and noise when whipping are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 is the exploded view of the knife assembly structure of the present application;

[0020] Figure 2 is the exploded view of the knife assembly structure of the present application;

[0021] Figure 3 is the front view of the upper knife blade of the present application;

[0022] Figure 4 is another perspective view of the upper knife blade of the present application;

[0023] Figure 5 is the display view of the middle knife blade of the present application;

[0024] Figure 6 is the display view of the lower knife blade of the present application;

[0025] Figure 7 is the cross-sectional view of the present application for reflecting the positional relationship between the stirring container, the main machine and the knife assembly structure;

[0026] Figure 8 is the exploded view of the present application for reflecting the assembly relationship between the stirring container and the main machine;

[0027] Figure 9 is another perspective view of Figure 8 .

[0028] Explanation of reference signs: 100, knife assembly structure; 101, mounting hole; 10, upper knife blade; 11, upper knife body; 12, first upper knife blade; 13, second upper knife blade; 14, upper knife blade edge; 20, middle knife blade; 21, middle knife body; 22, first middle knife blade; 23, second middle knife blade; 24, middle knife blade edge; 30, lower knife blade; 31, lower knife body; 32, first lower knife blade; 33, second lower knife blade; 34, lower knife blade edge; 35, third lower knife blade; 36, fourth lower knife blade; 40, knife shaft; 200, stirring container; 210, knife seat; 211, upper clutch; 220, turbulence rib; 300, main machine; 310, motor; 311, lower clutch. DETAILED DESCRIPTION

[0029] The utility model discloses an embodiment of the utility model will be described below with reference to the drawings Figures 1-9 It is obvious that the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0031] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the person skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0032] Referring to Figures 1-9 The utility model discloses a knife assembly structure for being arranged on the knife seat 210 of the mixer, and the knife assembly structure 100 includes upper blade 10, middle blade 20, lower blade 30 and knife shaft 40, and the upper blade 10, the middle blade 20 and the lower blade 30 are sequentially arranged on the knife shaft 40 from top to bottom. The both ends of the upper blade 10 are bent upwards, the middle blade 20 is straightly arranged, the lower blade 30 is bent downwards along the shape of the inner side surface of the knife seat 210, and the upper blade 10, the middle blade 20 and the lower blade 30 are completely coincident after rotating 180 degrees around the knife shaft 40.

[0033] By bending the two ends of the upper blade 10 upward, straightening the middle blade 20, and bending the lower blade 30 downward along the shape of the inner side surface of the knife seat 210, the upper blade 10, the middle blade 20, and the lower blade 30 cooperate to achieve multi-blade multi-angle three-dimensional whipping when the driving knife shaft 40 rotates, thereby improving the stirring effect. Meanwhile, the upper blade 10, the middle blade 20, and the lower blade 30 are arranged to be symmetrical after the knife shaft 40 rotates 180°, achieving overall dynamic balance of the knife assembly structure 100, and reducing vibration and noise during whipping.

[0034] In addition, it should be noted that the specific materials and thicknesses of the upper blade 10, the middle blade 20, and the lower blade 30 can be set according to requirements, which are within the technical concept range of the present application and will not be described in detail here.

[0035] To facilitate the installation of the upper blade 10, the middle blade 20, and the lower blade 30 on the knife shaft 40, the middle part of each of the upper blade 10, the middle blade 20, and the lower blade 30 is provided with a mounting hole 101, so that the upper blade 10, the middle blade 20, and the lower blade 30 are fixedly installed on the knife shaft 40 through the mounting hole 101, ensuring the overall stability of the entire knife assembly structure 100.

[0036] Further, referring to Figure 1 , Figure 2 and Figure 3 , the upper blade 10 includes an upper blade body 11, and first and second upper blades 12 and 13 extending to both sides of the upper blade body 11 and bent upward, and an upper blade edge 14 is arranged on each of the first and second upper blades 12 and 13 towards the rotation direction of the knife shaft 40.

[0037] The first and second upper blades 12 and 13 bent upward can better stir and crush food materials, making the stirring more uniform and delicate, and the first and second upper blades 12 and 13 bent upward can achieve a turbulence effect during stirring, improving the crushing efficiency of food materials.

[0038] The first and second upper blades 12 and 13 are provided with the upper blade edge 14 towards the rotation direction of the knife shaft 40 (i.e. consistent with the rotation direction of the upper blade edge 14 and the knife shaft 40), so that the upper blade 10 can cut and whip large pieces of food materials such as apples, pears, and oranges, achieving a cutting-free stirring technique.

[0039] Further, the included angle α formed by the first or second upper blade 12 or 13 and the plane of the upper blade body 11 is 60-65°.

[0040] The included angle α formed by the first upper blade 12 or the second upper blade 13 and the plane where the upper blade body 11 is located is preferably 63°, that is, when the first upper blade 12 or the second upper blade 13 is bent upward by 63° relative to the upper blade body 11, the cutting and stirring effect of the upper blade 10 is optimal. Since the upper blade 10 is completely overlapped after rotating 180° around the blade shaft 40, when the first upper blade 12 is bent upward by 63° relative to the upper blade body 11, the second upper blade 13 is also bent upward by 63° relative to the upper blade body 11.

[0041] Further, referring to Figure 3 and Figure 4 , the first upper blade 12 and the second upper blade 13 have one side of the upper blade edge 14 offset in the direction opposite to the rotation direction of the blade shaft 40, and the offset angle β is 35-40°.

[0042] Compared with the conventional upper blade 10 bent vertically upward, the first upper blade 12 and the second upper blade 13 have one side of the upper blade edge 14 offset by 35-40° in the direction opposite to the direction of the blade shaft 40, and in the utility model, the offset angle β is preferably 35°, that is, the first upper blade 12 and the second upper blade 13 are inclined and bent upward, which can form different rotation cutting angles, increase the contact area with the food materials, and thus further improve the cutting efficiency and stirring effect.

[0043] Further, referring to Figure 2 and Figure 5 , the middle blade 20 includes a middle blade body 21 and first and second middle blades 22 and 23 extending upward from opposite sides of the middle blade body 21, and the first and second middle blades 22 and 23 are provided with middle blade edges 24 facing the rotation direction of the blade shaft 40.

[0044] In the utility model, the contour of the middle blade 20 is approximately a lengthened "Z" letter, and in other embodiments, the shape of the middle blade 20 can be adjusted accordingly according to actual conditions. The flatly arranged middle blade 20 can provide more direct cutting, thereby further improving the cutting efficiency of the food materials.

[0045] Further, the lower blade 30 includes a lower blade body 31 and first and second lower blades 32 and 33 extending from both sides of the lower blade body 31 and bent downward, and the first and second lower blades 32 and 33 are provided with lower blade edges 34 facing the rotation direction of the blade shaft 40, and the included angle γ formed by the first lower blade 32 or the second lower blade 33 and the plane where the lower blade body 31 is located is 50-60°.

[0046] The downwardly bent first lower blade 32 and the second lower blade 33 can effectively push the food materials at the bottom of the blade seat 210 upwards, reduce the stirring dead angle, ensure more uniform stirring, and meanwhile, the downward bending of the first lower blade 32 and the second lower blade 33 helps to generate stronger upward force during stirring, so that the food materials are more easily stirred and mixed, thereby improving the stirring efficiency, and the design of the downwardly bent first lower blade 32 and the second lower blade 33 can reduce stress concentration, thereby improving the service life of the blades.

[0047] With reference to Figure 2 and Figure 6 In the utility model, the included angle γ formed by the first lower blade 32 or the second lower blade 33 and the plane where the lower blade body 31 is located is preferably 55°, that is, at this angle, the first lower blade 32 and the second lower blade 33 have the best stirring effect on the food materials. Since the lower blade 30 is completely overlapped after rotating 180° around the blade shaft 40, the first lower blade 32 and the second lower blade 33 are both downwardly bent 55° relative to the lower blade body 31.

[0048] Further, the side, away from the lower blade body 31, of the first lower blade 32 and the second lower blade 33 respectively extends a third lower blade 35 and a fourth lower blade 36, and the third lower blade 35 and the fourth lower blade 36 are respectively bent towards the outside of the first lower blade 32 and the second lower blade 33.

[0049] It can be understood that by extending the third lower blade 35 outwardly at the side, away from the lower blade body 31, of the first lower blade 32 and extending the fourth lower blade 36 outwardly at the side, away from the lower blade body 31, of the second lower blade 33, the food materials can be pushed from the inside center to the edge of the blade seat 210, thereby further enhancing the stirring efficiency.

[0050] Further, the included angle δ formed by the third lower blade 35 and the plane where the first lower blade 32 is located or the fourth lower blade 36 and the plane where the second lower blade 33 is located is 24-28°.

[0051] In the utility model, the included angle δ is preferably 26°, at which the stirring effect of the entire lower blade 30 on the food materials is best.

[0052] Further, the first lower blade 32, the second lower blade 33, the third lower blade 35 and the fourth lower blade 36 are all provided with a lower blade edge 34 facing the rotating direction of the blade shaft 40. Through the arrangement of the lower blade edge 34, when the blade shaft 40 rotates, the first lower blade 32, the second lower blade 33, the third lower blade 35 and the fourth lower blade 36 can stably cut and stir the food materials.

[0053] In the utility model, the angles of the upper blade edge 14, the middle blade edge 24 and the lower blade edge 34 need to be consistent, so that the cutting and mixing actions of the upper blade 10, the middle blade 20 and the lower blade 30 during the stirring process are more coordinated, which helps to improve the stirring efficiency and the uniformity of the stirred food materials, and meanwhile, the consistent blade edge angles can reduce the uneven contact between the blades and the stirring container 200, thereby reducing the abrasion and prolonging the service life of the blades.

[0054] The utility model provides a kind of blender for the second aspect, referring to Figure 7 、 Figure 8 And Figure 9 , including stirring container 200 and the blade assembly structure 100 as described above, for installing the blade seat 210 of blade assembly structure 100 is set to the bottom of stirring container 200, blade assembly structure 100 is located in stirring container 200, and the inner wall of stirring container 200 is provided with the turbulence rib 220 that is cooperated with blade assembly structure 100 and stirs.

[0055] By being provided with the above-mentioned blade assembly structure 100 in stirring container 200, when the food materials are stirred, the upper blade 10, the middle blade 20 and the lower blade 30 of different height and shape can form multi-blade multi-angle three-dimensional solid whipping, cooperate with the turbulence rib 220 in stirring container 200, greatly improve stirring effect.And the upper blade 10, the middle blade 20 and the lower blade 30 can realize the overall dynamic balance of the blade assembly when rotating, thereby reducing the vibration and noise generated when whipping.

[0056] Further, the blender further includes host computer 300 with stirring container 200 can be detached cooperation, host computer 300 is provided with the motor 310 for driving blade shaft 40 rotation.

[0057] Blade seat 210 is provided with the upper clutch 211 for fixing blade shaft 40, host computer 300 is provided with the lower clutch 311 corresponding to the connection of upper clutch 211, and the output shaft of motor 310 is fixedly connected to lower clutch 311.

[0058] When using, stirring container 200 is placed on host computer 300, so that the upper clutch 211 on the base is connected with the lower clutch 311 in host computer 300, at this time, the lower clutch 311 is driven to rotate by motor 310, drives the upper clutch 211 to rotate, thereby driving blade shaft 40 to rotate, and then driving the upper blade 10, the middle blade 20 and the lower blade 30 of blade assembly structure 100 to rotate synchronously, to realize the whipping of food materials in stirring container 200.

[0059] In addition, the host 300 is further provided with a control structure for controlling the operation of the motor 310, and the surface of the stirring container 200 is provided with a scale and a handle and the like, and such structures are prior art in the field and are not the innovative points of the utility model, and will not be described in detail here.

[0060] The working principle of the utility model is roughly as follows: in use, the motor 310 drives the lower clutch 311 to rotate, drives the lower clutch 311 and the knife shaft 40 to rotate, thereby driving the upper blade 10, the middle blade 20 and the lower blade 30 to rotate synchronously, the lower blade 30 is bent downward along the shape of the inner surface of the knife seat 210, the middle blade 20 is straight, and the two ends of the upper blade 10 are bent upward, thereby realizing multi-blade multi-angle three-dimensional stirring, and cooperating with the turbulence rib 220 in the stirring container 200, the stirring effect on the food materials in the stirring container 200 is improved, and the upper blade 10, the middle blade 20 and the lower blade 30 can realize overall dynamic balance when rotating, thereby greatly reducing the vibration and noise during stirring.

[0061] In order to better illustrate the technical solutions of the first aspect and the second aspect of the utility model, the utility model provides one exemplary embodiment for each of the two aspects as follows:

[0062] <Embodiment 1>

[0063] With reference to Figure 1 , Figure 2 and Figure 3 , the utility model embodiment 1 provides a kind of knife assembly structure, including upper blade, middle blade, lower blade and knife shaft, upper blade 10, middle blade 20 and lower blade 30 are sequentially arranged on knife shaft 40 from top to bottom.Upper blade 10 is bent upward at both ends, middle blade 20 is straight, and lower blade 30 is bent downward along the shape of the inner surface of the knife seat 210, and upper blade 10, middle blade 20 and lower blade 30 are completely coincident after rotating 180 ° around knife shaft 40.

[0064] With reference to Figure 3 and Figure 4 , upper blade 10 includes upper blade body 11 and first upper blade 12 and second upper blade 13 extending to its both sides and bent upward, and the upper blade 10 blade is arranged on first upper blade 12 and second upper blade 13 towards the rotation direction of knife shaft 40.The included angle α formed by first upper blade 12 or second upper blade 13 and the plane of upper blade body 11 is 63 °, and the side of the upper blade edge 14 of first upper blade 12 and second upper blade 13 is offset towards the direction opposite to the rotation direction of knife shaft 40, and the offset angle β is 35 °

[0065] With reference to Figure 2 and Figure 5The middle blade 20 comprises a middle blade body 21 and a first middle blade 22 and a second middle blade 23 extending from the middle blade body 21 to opposite sides thereof, and the first middle blade 22 and the second middle blade 23 are provided with middle blade edges 24 facing the rotating direction of the blade shaft 40.

[0066] The lower blade 30 comprises a lower blade body 31 and a first lower blade 32 and a second lower blade 33 extending from the lower blade body 31 to opposite sides thereof and being bent downward, and the first lower blade 32 and the second lower blade 33 are provided with lower blade edges 34 facing the rotating direction of the blade shaft 40, and the included angle γ between the first lower blade 32 or the second lower blade 33 and the plane where the lower blade body 31 is located is 55°.

[0067] Referring to Figure 2 and Figure 6 , the first lower blade 32 and the second lower blade 33 are respectively provided with a third lower blade 35 and a fourth lower blade 36 extending from the side away from the lower blade body 31, and the third lower blade 35 and the fourth lower blade 36 are respectively bent towards the outside of the first lower blade 32 and the second lower blade 33. The included angle δ between the third lower blade 35 and the plane where the first lower blade 32 is located or between the fourth lower blade 36 and the plane where the second lower blade 33 is located is 26°.

[0068] <Embodiment 2>

[0069] The embodiment 2 of the utility model provides a blender, referring to Figure 6 , Figure 7 and Figure 8 , the stirring container 200 and the blade assembly structure 100 as described above, the blade seat 210 for installing the blade assembly structure 100 is arranged at the bottom of the stirring container 200, the blade assembly structure 100 is located in the stirring container 200, and the inner wall of the stirring container 200 is provided with the turbulence rib 220 for cooperating with the blade assembly structure 100 to stir.

[0070] The above is only used to illustrate the technical scheme of the utility model and is not limited, and other modifications or equivalent replacements of the technical scheme of the utility model made by the ordinary skilled in the art should be covered in the claim range of the utility model.

Claims

1. A blade assembly structure for mounting on a blade holder (210) of a mixer, characterized in that, The blade assembly structure (100) includes an upper blade (10), a middle blade (20), a lower blade (30), and a blade shaft (40). The upper blade (10), the middle blade (20), and the lower blade (30) are arranged sequentially on the blade shaft (40) from top to bottom. The upper blade (10) is bent upward at both ends, the middle blade (20) is set straight, and the lower blade (30) is bent downward along the inner surface of the blade holder (210). The upper blade (10), the middle blade (20) and the lower blade (30) are completely overlapped after rotating 180° around the blade axis (40).

2. The blade assembly structure according to claim 1, characterized in that, The upper blade (10) includes an upper blade body (11) and a first upper blade (12) and a second upper blade (13) extending to both sides of the upper blade body (11) and bending upward. The first upper blade (12) and the second upper blade (13) are each provided with an upper blade cutting edge (14) facing the rotation direction of the blade shaft (40).

3. The blade assembly structure according to claim 2, characterized in that, The angle α formed between the first upper blade (12) or the second upper blade (13) and the plane containing the upper blade body (11) is 60-65°.

4. The blade assembly structure according to claim 2, characterized in that, The first upper blade (12) and the second upper blade (13) are both offset in the opposite direction to the rotation direction of the blade axis (40) on the side with the upper blade cutting edge (14), and the offset angle β is 35-40°.

5. The blade assembly structure according to claim 1, characterized in that, The middle blade (20) includes a middle blade body (21) and a first middle blade (22) and a second middle blade (23) extending from the middle blade body (21) to its opposite sides. The first middle blade (22) and the second middle blade (23) are each provided with a middle blade cutting edge (24) facing the rotation direction of the blade shaft (40).

6. The blade assembly structure according to claim 1, characterized in that, The lower blade (30) includes a lower blade body (31) and a first lower blade (32) and a second lower blade (33) extending to both sides of the lower blade body (31) and bending downwards. The angle γ formed by the first lower blade (32) or the second lower blade (33) and the plane where the lower blade body (31) is located is 50-60°.

7. The blade assembly structure according to claim 6, characterized in that, The first lower blade (32) and the second lower blade (33) have a third lower blade (35) and a fourth lower blade (36) extending from the side away from the lower blade body (31), respectively. The third lower blade (35) and the fourth lower blade (36) are bent outward from the first lower blade (32) and the second lower blade (33), respectively.

8. The blade assembly structure according to claim 7, characterized in that, The angle δ formed by the plane containing the third lower blade (35) and the first lower blade (32) or the plane containing the fourth lower blade (36) and the second lower blade (33) is 24-28°.

9. A blade assembly structure according to claim 7, characterized in that, The first lower blade (32), the second lower blade (33), the third lower blade (35) and the fourth lower blade (36) are all provided with a lower blade cutting edge (34) facing the rotation direction of the cutter shaft (40).

10. A mixer, characterized in that, The mixer includes a mixing container (200) and a blade assembly structure (100) as described in any one of claims 1-9. The blade holder (210) of the mixer is located at the bottom of the mixing container (200), and the mixing container (200) is provided with a baffle (220) that cooperates with the blade assembly structure (100) for mixing.

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