Pre-cutting head of juicer

Abstract

The utility model relates to a pre-cutting head of a juicer. The pre-cutting head comprises a body, the first cutting edge is installed on the outer side face of the body and bends and extends upwards along the rotation center, and the radial outer side face of the first cutting edge is sunken inwards to form a notch. According to the technical scheme, under the condition that the structural strength of the first cutting edges is guaranteed, the blocking effect of the first cutting edges on falling materials is effectively reduced, the effective blanking space is enlarged, the passing rate of large materials is increased, idling of the materials above the first cutting edges is avoided, and the service life of the materials is prolonged. The materials crushed by the first cutting edge can smoothly enter the next juicing action, so that the cutting efficiency is ensured; in addition, due to the fact that the notch is recessed towards the interior of the first cutting edge, the arc direction of the radial outer side face of the first cutting edge is changed, and when the juicer rotates reversely, the first cutting edge has a certain gathering effect on the food materials.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing machines, in particular to a pre-cutting head for a juicer with high cutting efficiency. Background Art

[0002] The juicer is developed on the basis of the conventional juicer. Its main function is to turn fruit into juice to improve the taste and facilitate drinking. Compared with the juicer, it obtains juice through low-speed spiral squeezing. The lower the squeezing speed, the better. The juice is squeezed out slowly like a towel, without destroying the fruit cell structure, and the fruit nutrition is preserved. Moreover, low-speed juice extraction does not generate high heat, and also avoids the problem of heat oxidation of juice. In the related technology, the motor is combined with the reduction structure to output slow and large torque to meet the large torque required for slow screw squeezing.

[0003] The application number is CN201990001351.0, and the name of the invention is "Juicer". It discloses that the hook-shaped cutting blade is formed in a spiral shape extending upward along the rotation direction of the cutting part at the rotation center, and the upper end of the hook-shaped cutting blade is formed into a pointed hook shape whose cross-section decreases as it approaches the end. However, the technical problem existing in this technical scheme is: since the cross-section of the upper end of the hook-shaped cutting blade gradually decreases to a hook shape toward the end, that is, the radial outer side surface of the hook-shaped cutting blade is a continuous arc surface, based on the characteristics of the arc surface, the arc surface will protrude outward, and there will be a certain shielding effect on the falling of large pieces of material, and there may be a situation where large pieces of material are difficult to fall, and then the large pieces of material will idle above the hook-shaped cutting blade, which will extend the entire juicing time and affect the cutting efficiency.

[0004] The application number is CN202223023437.6, and the name of the invention is "A food processor with a stable juice extraction structure". It discloses that the upper cutting edge and the lower cutting edge are both arranged in an arc shape relative to each other to form a semi-arc cutting edge with an opening toward the side wall. However, the technical problem existing in this technical solution is that since the upper cutting edge is arranged in an arc shape, that is, the radial outer side surface of the upper cutting edge is a continuous arc surface, based on the characteristics of the arc surface, the arc surface will bulge outward, which will have a certain shielding effect on the falling of large pieces of material, and may cause large pieces of material to idle above the upper cutting edge, and it may be difficult for large pieces of material to fall, which will prolong the entire juicing time and thus affect the cutting efficiency.

[0005] The above disclosed technical solutions all have the following technical problems: large pieces of material may idle above the upper cutting edge or the hook-shaped cutting edge, which prolongs the entire juicing time and affects the cutting efficiency. Utility Model Content

[0006] The utility model aims to provide a pre-cutting head for a juicer to solve the technical problems of idling of materials and low cutting efficiency.

[0007] In order to solve the above technical problems, the utility model provides a juicer pre-cutting head, comprising:

[0008] ontology;

[0009] The first cutting edge is installed on the outer side of the body, and is bent and extended upward along the rotation center. The radial outer side of the first cutting edge is inwardly recessed to form a notch.

[0010] Preferably, along the rotation center toward the outside, the distance between the notch and the radial inner side surface of the first cutting edge first decreases and then increases.

[0011] Preferably, the notch is arranged on a side of the first cutting edge close to the body, and / or the notch is arranged on a side of the first cutting edge away from the body.

[0012] Preferably, the notch is arranged on a side of the first cutting edge close to the main body, and a material guide surface connected to the notch is formed on the radial outer side surface of the first cutting edge, and a cutting edge is formed at the connection between the material guide surface and the notch.

[0013] Preferably, the distance between the material guide surface and the radial inner side surface of the first cutting edge gradually decreases outward from the rotation center.

[0014] Preferably, the area of ​​the material guiding surface gradually decreases outward from the rotation center.

[0015] Preferably, the notch is in an arc shape or a broken line shape, and the material guiding surface is in an arc shape.

[0016] Preferably, the projection area of ​​the notch is S1, the projection area of ​​the first cutting edge is S2, and S1:S2 is 0.05-0.2.

[0017] Preferably, the juicer pre-cutting head further comprises a second cutting edge mounted on the outer side of the body and located on the opposite side of the first cutting edge, and the rotation direction of the second cutting edge along the circumferential direction is opposite to that of the first cutting edge.

[0018] Preferably, the projection area of ​​the notch is S1, the projection area formed by the tip of the first cutting edge and the tip of the second cutting edge is S3, and S1:S3 is 0.03-0.15.

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model provides a pre-cutting head for a juicer, in which a notch is formed on the radial outer side surface of the first cutting edge. Since the notch is recessed, the radial outer side surface has a narrowing section in the process of bending and extending upward, thereby avoiding an overall bulge. Under the condition of ensuring the structural strength of the first cutting edge, the effect of the first cutting edge on blocking the falling of materials is effectively reduced, the effective falling space is increased, the passing rate of large pieces of materials is improved, and idling of materials above the first cutting edge is avoided, so that the materials crushed by the first cutting edge can smoothly enter the next juicing action, thereby ensuring the cutting efficiency. In addition, since the notch is recessed into the first cutting edge, the arc direction of the radial outer side surface of the first cutting edge is changed, so that when the juicer is reversed, the first cutting edge has a certain gathering effect on the food.

[0021] 2. The notch is set outward from the center of rotation, and the distance between the notch and the radial inner side surface of the first cutting edge first decreases and then increases, avoiding the first cutting edge from bulging outward as a whole, and achieving a narrowing section on the radial outer side surface during the upward bending and extension process, further enhancing the passing rate of large pieces of material.

[0022] 3. The notch is arranged on the side of the first cutting edge close to the body, and a guide surface connected to the notch is formed on the radial outer side surface of the first cutting edge, and a cutting edge is formed at the connection between the guide surface and the notch; based on this, after the material is pierced by the end of the first cutting edge, the guide surface guides the material at the end of the first cutting edge into the notch, and a cutting edge protruding outward is formed at the connection between the guide surface and the notch, so that the material can be cut at the cutting edge, so that the material is cut twice before falling under the first cutting edge, the particle size of the material is smaller, and the overall juicing efficiency is improved; secondly, after the food is cut at the cutting edge, more food gathers near the cutting edge at the moment of cutting, and the first cutting edge of this part will bear a larger weight, and under the action of the weight of the food itself, it will move downward. At this time, through the notch located below the cutting edge, combined with the gravity of the food itself, the material is quickly guided out of the first cutting edge, avoiding local damage due to excessive weight at the cutting edge, and at the same time, the secondary pre-cutting of the food can be achieved.

[0023] 4. The notch is set in an arc shape or a broken line shape. When the notch is an arc shape, the area of ​​the notch is larger under the same circumference as other shapes, which allows more materials to fall from above the first cutting edge; when the notch is a broken line shape, cutting edges can be generated between adjacent broken lines, and the pre-cutting effect on the material is more significant. The guide surface is an arc shape. The guide surface is set in an arc shape. After the end of the first cutting edge pierces the material, the arc-shaped guide surface guides the material at the end of the first cutting edge into the notch. The arc shape is smooth based on its own characteristics, so that the material runs more smoothly on the guide surface, improving the operation efficiency; at the same time, the arc shape has the feature of convexity, which also increases the running path of the material on the guide surface. Part of the material falls directly under the first cutting edge on the guide surface, and part of the material enters the notch along the guide surface, so that the material is dispersed on various parts of the first cutting edge, avoiding local damage to the first cutting edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of a pre-cutting head for a juicer in one embodiment of the utility model.

[0026] Figure 2 for Figure 1 The schematic diagram of the structure of the first cutting edge, the second cutting edge and the main body is shown.

[0027] Figure 3 for Figure 2 A schematic structural diagram of the first cutting edge, the second cutting edge and the main body from another perspective.

[0028] The names of the components in the figure are as follows:

[0029] 1. Main body; 2. First cutting edge; 21. Notch; 22. Material guide surface; 3. Second cutting edge; 31. Material facing surface; 32. First shearing opening; 4. Blanking opening; 41. Second shearing opening. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] See also Figure 1-Figure 3 An embodiment of the utility model provides a juicer pre-cutting head, comprising a body 1 , a first cutting edge 2 and a second cutting edge 3 .

[0032] The first cutting edge 2 is mounted on the outer surface of the body 1, and is bent and extended upward along the rotation center, and its radial outer surface is inwardly concave to form a notch 21. It can be understood that, under the condition of ensuring the structural strength of the first cutting edge 2, a notch 21 is formed on the radial outer surface of the first cutting edge 2. Since the notch 21 is inwardly concave, the radial outer side surface has a narrowing section during the upward bending and extension process, avoiding the overall convexity, effectively reducing the effect of the first cutting edge 2 on the blocking of the falling material, increasing the effective falling space, improving the passing rate of large pieces of material, avoiding idling of the material above the first cutting edge 2, and allowing the material crushed by the first cutting edge 2 to smoothly enter the next juicing action, thereby ensuring the cutting efficiency. In addition, since the notch 21 is concave toward the first cutting edge 2, the arc direction of the radial outer side surface of the first cutting edge 2 is changed, so that when the juicer is reversed, the first cutting edge 2 has a certain gathering effect on the food.

[0033] It should be noted that the notch 21 can be set in any shape, as long as the radial outer side surface is not convex and has a narrowing section. Preferably, the notch 21 is in an arc shape or a broken line shape. When the notch 21 is in an arc shape, the area of ​​the notch 21 is larger when the circumference is the same as that of other shapes, allowing more materials to fall from above the first cutting edge 2. When the notch 21 is in a broken line shape, cutting edges can be generated between adjacent broken lines, and the pre-cutting effect on the material is more significant.

[0034] Among them, along the rotation center outward, the distance between the notch 21 and the radial inner side surface of the first cutting edge 2 first decreases and then increases, so that the radial outer side surface has a narrowing section in the process of bending and extending upward, avoiding the overall bulge, effectively reducing the effect of the first cutting edge 2 on blocking the falling material, increasing the effective material falling space, improving the passing rate of large pieces of material, avoiding idling of materials above the first cutting edge 2, and allowing the material crushed by the first cutting edge 2 to smoothly enter the next juicing action, thereby ensuring the cutting efficiency.

[0035] In this embodiment, if Figure 2-Figure 3 As shown, a circular arc-shaped guide surface 22 is provided at the end of the first cutting edge 2, and a notch 21 is provided on the side of the first cutting edge 2 close to the body 1, that is, the radial inner and outer sides of the entire first cutting edge 2 first gradually decrease, then gradually increase, and finally gradually decrease again.

[0036] Specifically, Figure 2-Figure 3 As shown, the notch 21 can be arranged on the side of the first cutting edge 2 close to the main body 1, wherein the radial outer side surface of the first cutting edge 2 is also formed with a guide surface 22 connected to the notch 21, and a cutting edge is formed at the connection between the guide surface 22 and the notch 21.

[0037] It is understandable that the vertical cross-section of the notch 21 is quadrilateral, and a portion of the material falls directly below the first cutting edge 2 on the material guide surface 22, and a portion of the material enters the notch 21 along the material guide surface 22, so that the material is dispersed on various parts of the first cutting edge 2, avoiding the situation where the first cutting edge 2 is partially damaged. After the end of the first cutting edge 2 punctures the material, the material guide surface 22 guides the material at the end of the first cutting edge 2 into the notch 21, and a cutting edge protruding outward is formed at the connection between the material guide surface 22 and the notch 21. Based on the joint action of the cutting edge and the inner wall of the feed barrel, the material can be cut at the cutting edge, so that the material is cut twice before falling below the first cutting edge 2, and the particle size of the material is smaller, thereby improving the overall juice extraction efficiency.

[0038] Secondly, after the food is cut at the cutting edge, more of it will gather near the cutting edge at the moment of cutting. The first cutting edge 2 in this part will bear a greater weight and will move downward under the weight of the food itself. At this time, through the notch 21 located below the cutting edge and the gravity of the food itself, the material can be quickly guided out of the first cutting edge 2 to avoid local damage caused by excessive weight at the cutting edge, while achieving secondary pre-cutting of the food.

[0039] More specifically, along the center of rotation outward, the distance between the guide surface 22 and the radial inner side surface of the first cutting edge 2 gradually decreases, gradually converging toward the very end of the first cutting edge 2, and the area of ​​the guide surface 22 toward the end of the first cutting edge 2 gradually decreases, making the end of the first cutting edge 2 sharper, which is beneficial for the end of the first cutting edge 2 to insert into the material and puncture the material.

[0040] Among them, Figure 2-Figure 3 As shown, the guide surface 22 is in an arc shape. After the end of the first cutting edge 2 punctures the material, the arc-shaped guide surface 22 guides the material at the end of the first cutting edge 2 into the notch 21. The arc shape is smoothly set based on its own characteristics, so that the material runs more smoothly on the guide surface 22, thereby improving the running efficiency. At the same time, the arc shape has a convex feature, which also increases the running path of the material on the guide surface 22. A part of the material falls directly under the first cutting edge 2 on the guide surface 22, and a part of the material enters the notch 21 along the guide surface 22, so that the material is dispersed on various parts of the first cutting edge 2, thereby avoiding local damage to the first cutting edge 2.

[0041] In some other embodiments, the notch 21 can be arranged on the side of the first cutting edge 2 away from the body 1, or on the side of the first cutting edge 2 close to the body 1, and the two notches 21 are connected by a material guide surface 22. Under the condition that the structural strength of the first cutting edge 2 is met, more notches 21 are arranged on the radial outer side of the first cutting edge 2, which greatly increases the effective material falling space on the first cutting edge 2, improves the passing rate of large pieces of material, and further avoids idling of the material above the first cutting edge 2.

[0042] The notch 21 can also be arranged in the middle of the radial outer side of the first cutting edge 2, which is conducive to ensuring the structural strength of the first cutting edge 2. The notch 21 can also be arranged on the side of the first cutting edge 2 away from the body 1, and the side of the first cutting edge 2 close to the body 1 is provided with a guide surface 22, and the guide surface 22 and the notch 21 are connected.

[0043] like Figure 3 As shown, the projection area of ​​the notch 21 is S1, the projection area of ​​the first cutting edge 2 is S2, and S1:S2 is 0.05-0.2. When S1:S2 is 0.05-0.2, it can not only ensure the structural strength of the first cutting edge 2, but also effectively reduce the shielding effect of the first cutting edge 2 on the falling material, increase the effective blanking space as much as possible, and improve the pass rate of large pieces of material. When S1:S2 is less than 0.05, the projection area of ​​the notch 21 is too small, the blanking space is not large enough, and the first cutting edge 2 still has a significant shielding effect on the material. When S1:S2 is greater than 0.2, the projection area of ​​the notch 21 is too large, the structural strength of the first cutting edge 2 is poor, and there is a risk of breakage. S1 is preferably 86mm 2 , S2 is preferably 994mm 2 ; Alternatively, S1 is preferably 127 mm 2 , S2 is preferably 822mm 2 .

[0044] In addition, if Figure 1-Figure 3 As shown, the juicer pre-cutting head also includes a second cutting edge 3 installed on the outer side of the body 1 and located on the opposite side of the first cutting edge 2, and the rotation direction of the second cutting edge 3 along the circumferential direction is opposite to that of the first cutting edge 2.

[0045] It can be understood that the second cutting edge 3 is more upwardly tilted toward the radial outside, and the upper surface of the second cutting edge 3 has two edges. The second cutting edge 3 has a material-facing surface 31 along the rotation direction, and the angle between the material-facing surface 31 and the horizontal plane is a right angle or approximately a right angle. The material-facing surface 31 can be used to push the material, and the bottom edge of the material-facing surface 31 is the first shearing opening 32, and the first shearing opening 32 cooperates with the second shearing opening 41 on the blanking opening 4 for cutting. When the material enters the feed barrel, it is first pierced and cut into larger pieces of material by the first cutting edge 2, which is the first pre-cutting. A part of the material is also pre-cut for the second time at the edge, and then the first shearing opening 32 and the second shearing opening 41 cooperate to cut the large piece of material into small pieces, which is the third pre-cutting of the material.

[0046] The projection area of ​​the notch 21 is S1, the projection area formed by the tip of the first cutting edge 2 and the tip of the second cutting edge 3 is S3, and S1:S3 is 0.03-0.15.

[0047] It needs to be explained that Figure 3 As shown, the radial outer side of the first cutting edge 2 can be a complete arc from the tip to the root of the blade, and the projection area S1 of the notch 21 refers to the area enclosed by the upper edge of the notch 21 and the arc from a top view. Preferably, S1 is 86 mm 2 , S3 is 2525mm 2 ; or, S1 is 127mm 2 , S3: 1190mm 2 .

[0048] It can be understood that S3 can be interpreted as the material cutting area between the first cutting edge 2 and the second cutting edge 3, which to a certain extent represents the ability of material pre-cutting. The size of S3 can determine the speed of material pre-cutting by the first cutting edge 2 and the second cutting edge 3 above the pressure plate. The size of S1 can determine the speed at which the material falls from above the first cutting edge 2. When S1:S3 is 0.03-0.15, the speed at which the material falls from the radial outer side of the first cutting edge 2 to the bottom of the first cutting edge 2 is the sum of the pre-cutting speeds of the first cutting edge 2 and the second cutting edge 3. The two speeds are balanced, so that the amount of material falling from the first cutting edge 2 can be just cut by the first cutting edge 2 and the second cutting edge 3, which will not cause a large amount of material accumulation in the pre-cutting stage, and has a higher cutting efficiency.

[0049] When S1:S3 is less than 0.03, the radial outer side of the first cutting edge 2 falls under the first cutting edge 2 too slowly, resulting in some idling time in the pre-cutting stage not being utilized, reducing cutting efficiency. When S1:S3 is greater than 0.15, the radial outer side of the first cutting edge 2 falls under the first cutting edge 2 too quickly, making it easy for a large amount of material to accumulate under the first cutting edge 2, causing material jamming and increasing motor load.

[0050] In addition to the above preferred embodiments, the technical solutions protected by the present utility model are not limited to the above embodiments. It should be pointed out that the combination of multiple technical solutions in any one embodiment, and the combination of the technical solution of any one embodiment with the technical solutions in one or more other embodiments, are within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model all belong to the scope of protection claimed by the present utility model.

Claims

1. A juicer pre-cutting head, characterized in that: include: ontology; The first cutting edge is installed on the outer side of the body, and is bent and extended upward along the rotation center. The radial outer side of the first cutting edge is inwardly recessed to form a notch.

2. The juicer pre-cutting head according to claim 1, characterized in that: From the rotation center outward, the distance between the notch and the radial inner side surface of the first cutting edge first decreases and then increases.

3. The juice extractor pre-cutting head according to claim 1, characterized in that: The notch is arranged on a side of the first cutting edge close to the body, and / or the notch is arranged on a side of the first cutting edge away from the body.

4. The juice extractor pre-cutting head according to claim 3, characterized in that: The notch is arranged on a side of the first cutting edge close to the body, and a material guide surface connected to the notch is formed on the radial outer side surface of the first cutting edge, and a cutting edge is formed at the connection between the material guide surface and the notch.

5. The juice extractor pre-cutting head according to claim 4, characterized in that: From the rotation center outward, the distance between the material guide surface and the radial inner side surface of the first cutting edge gradually decreases.

6. The juice extractor pre-cutting head according to claim 4, characterized in that: The area of ​​the material guiding surface gradually decreases outward from the rotation center.

7. The juice extractor pre-cutting head according to claim 4, characterized in that: The notch is in an arc shape or a broken line shape, and the material guiding surface is in an arc shape.

8. The juice extractor pre-cutting head according to claim 1, characterized in that: The projection area of ​​the notch is S1, the projection area of ​​the first cutting edge is S2, and S1:S2 is 0.05-0.

2.

9. The juice extractor pre-cutting head according to claim 1, characterized in that: The juicer pre-cutting head also includes a second cutting edge installed on the outer side of the body and located on the opposite side of the first cutting edge, and the rotation direction of the second cutting edge along the circumferential direction is opposite to that of the first cutting edge.

10. The juice extractor pre-cutting head according to claim 9, characterized in that: The projection area of ​​the notch is S1, the projection area formed by the tip of the first cutting edge and the tip of the second cutting edge is S3, and S1:S3 is 0.03-0.15.

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