A pulverizing knife

Abstract

This utility model relates to a pulverizing blade, including a blade holder; a first blade sleeved on the blade holder; the first blade including a first cutting portion perpendicular to the blade holder; a cutting edge disposed on the side of the first cutting portion facing the rotation direction of the blade holder; the cutting edge including a first cutting edge and a second cutting edge intersecting each other; wherein, the plane in which the first blade rotates about the axis of the blade holder is the cutting plane; the first cutting edge and the second cutting edge are inclined relative to the cutting plane; along the axial direction of the blade holder, the axial width of the first cutting edge is less than the axial width of the second cutting edge. This utility model cuts and flips food through the first and second cutting edges, while the second cutting edge simultaneously enhances the structural strength of the pulverizing blade. Compared to blades that bend to increase the working range, the pulverizing blade experiences less resistance when rotating, and its straight structure provides better dynamic balance, enabling higher-speed rotation and improving its pulverizing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of food processor technology, and in particular to a pulverizing blade. Background Technology

[0002] Food processors are commonly used appliances in people's daily lives for crushing and mixing food. The key factors affecting the efficiency of food processors are the working area and rotation speed of the mixing blades.

[0003] To improve efficiency, current food processors often feature bent cutting edges on the blades to increase their axial coverage and thus their working area. However, this bent design increases resistance during mixing and affects the blades' dynamic balance. Furthermore, the rotation of these blades requires a high-powered motor, resulting in a bulky food processor. The dynamic balance of the blades also contributes to significant vibration and noise during rotation.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a shredder to improve its stability.

[0006] The technical solution of this utility model is as follows:

[0007] The shredder includes:

[0008] Tool holder;

[0009] A first cutting tool is sleeved on the tool holder; the first cutting tool includes a first cutting portion perpendicular to the tool holder; a cutting edge is provided on the side of the first cutting portion facing the rotation direction of the tool holder; the cutting edge includes a first cutting edge and a second cutting edge that intersect each other;

[0010] Wherein, the plane in which the first tool rotates about the axis of the tool holder is the cutting plane; the first cutting edge and the second cutting edge are inclined relative to the cutting plane; along the axis of the tool holder, the axial width of the first cutting edge is less than the axial width of the second cutting edge.

[0011] A further technical solution is that the angle between the first cutting edge and the cutting plane, and the angle between the second cutting edge and the cutting plane, are both <15°.

[0012] A further technical solution is that three first cutting parts are provided around the tool holder; the three first cutting parts are evenly arranged around the tool holder in the circumference.

[0013] A further technical solution is that the side of the first cutting part opposite to the rotation direction of the tool holder is the back of the tool; the edge of the back of the tool is chamfered.

[0014] A further technical solution is to have an arc transition between adjacent first cutting portions.

[0015] A further technical solution is that a connecting hole is formed on the first cutting tool; the first cutting tool is connected to the cutting tool bar through the connecting hole; the connecting hole is a hole with a straight edge around the axis of the cutting tool bar.

[0016] A further technical solution is that the first cutting part, on the side away from the tool holder, gradually bends into an arc shape towards the side opposite to the rotation direction of the tool holder.

[0017] A further technical solution is that a second cutting tool is also provided on the tool holder; the second cutting tool is arranged parallel to the first cutting tool; the second cutting tool includes a second cutting portion extending away from the tool holder; the second cutting portion is bent away from the first cutting tool.

[0018] A further technical solution is that the first cutting portion and the second cutting portion are arranged alternately along the axial direction of the tool holder.

[0019] The beneficial technical effects of this utility model are as follows:

[0020] (1) The pulverizer of this utility model is provided with a first cutting edge and a second cutting edge facing the rotation direction of the blade. When pulverizing food, the rotating first cutting part impacts the food. The intersecting first and second cutting edges form a blade tip that cuts the food. The axial width of the first cutting edge is less than the axial width of the second cutting edge. Compared with only providing a second cutting edge, the first cutting edge reduces the length-to-width ratio of the end of the first cutting part, increasing the structural strength of the end of the first cutting part. Moreover, the first and second cutting edges are inclined relative to the cutting plane. When in contact with food, the inclined surfaces of the first and second cutting edges provide a reaction force to the contacting food, thereby turning and disturbing the food, allowing uncut food to have a greater probability of entering the working range of the first cutting part, thus improving the working efficiency of the first cutting part. In addition, compared with a blade that bends to increase the working range, the pulverizer experiences less resistance when rotating, and its straight structure provides better dynamic balance. When pulverizing, the pulverizer generates less vibration noise and can rotate at a higher speed, further improving its pulverizing efficiency.

[0021] (2) Furthermore, the angle between the first cutting edge and the cutting plane, and the angle between the second cutting edge and the cutting plane, are both <15°, which reduces the relative force between the first cutting part and the food when rotating, ensuring the upper limit of the acceleration and rotation speed of the first cutter, and comprehensively improving the crushing efficiency of the first cutter. The higher the acceleration of the first cutter, the longer the effective time of high-speed crushing of the first cutter, the higher the upper limit of the rotation speed of the first cutter, and the more times it collides with the food per unit time.

[0022] (3) Furthermore, three first cutting parts are evenly arranged around the circumference of the blade holder. When the blade holder rotates, the circumferentially arranged first cutting parts can evenly distribute the centrifugal force generated by the rotation, improve the balance performance of the crusher blade during rotation, reduce the vibration and noise of the crusher blade during rotation, and support its high-speed rotation. Attached Figure Description

[0023] Figure 1 A three-dimensional structural schematic diagram of the shredder in Embodiment 1 of this disclosure is shown.

[0024] Figure 2 A top view of the first blade in the shredder of Embodiment 1 of this disclosure is shown.

[0025] Figure 3 A cross-sectional view of the shredder at point A is shown in Embodiment 1 of this disclosure.

[0026] Figure 4 A cross-sectional view of the shredder at point A is shown in Embodiment 1 of this disclosure, where the black portion represents the first cutting portion removed by the second blade.

[0027] Figure 5 A bottom view of the first blade in the shredder of Embodiment 1 of this disclosure is shown.

[0028] Figure 6 A bottom view of the first blade in the shredder of Embodiment 2 of this disclosure is shown.

[0029] Figure 7 A three-dimensional structural schematic diagram of the shredder in Embodiment 3 of this disclosure is shown.

[0030] Marked in the attached diagram:

[0031] 1. First cutting tool; 11. First cutting part; 12. First cutting edge; 13. Tool tip; 14. Second cutting edge; 15. Tool back; 16. Connecting hole; 161. Straight edge; 2. Second cutting tool; 21. Second cutting part; 3. Tool holder; 4. Cutting plane. Detailed Implementation

[0032] To make the objectives, features, and advantages of this utility model more apparent and understandable, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0033] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Example 1

[0035] Figure 1 A three-dimensional structural schematic diagram of the shredder in Embodiment 1 of this disclosure is shown. Figure 2 A top view of the first blade in the shredder of Embodiment 1 of this disclosure is shown. Figure 3 A cross-sectional view of the shredder at point A is shown in Embodiment 1 of this disclosure. Figure 4 A cross-sectional view of the shredder at point A is shown in Embodiment 1 of this disclosure, where the black portion represents the first cutting portion removed by the second blade. Figure 5 A bottom view of the first blade in the shredder of Embodiment 1 of this disclosure is shown. Please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The shredder includes a blade holder 3. A first blade 1 is fitted onto the blade holder 3. Specifically, the first blade 1 has a connecting hole 16. The first blade 1 is connected to the blade holder 3 through the connecting hole 16. The connecting hole 16 is a hole with a straight edge 161 around the axis of the blade holder 3. The outer diameter of the blade holder 3 at the location of the connecting hole 16 corresponds to the inner diameter of the connecting hole 16. The straight segment and the outer diameter of the blade holder 3 cooperate to restrict the rotation of the first blade 1 around the blade holder 3, so that the blade holder 3 can transmit torque to the first blade 1 to drive the first blade 1 to rotate. The first blade 1 includes a first cutting part 11 perpendicular to the blade holder 3. The first cutting part can be a flat plate to ensure the dynamic balance performance of the first blade 1. A cutting edge is provided on the side of the first cutting part 11 facing the rotation direction of the blade holder 3. The cutting edge includes an intersecting first cutting edge 12 and a second cutting edge 14. When shredding food, the rotating first cutting part 11 impacts the food. A blade tip 13 is formed between the intersecting first cutting edge 12 and the second cutting edge 14 to cut the food.

[0036] The plane on which the first blade 1 rotates around the axis of the blade holder 3 is the cutting plane 4. The first cutting edge 12 and the second cutting edge 14 are inclined relative to the cutting plane 4. When in contact with food, the inclined surfaces of the first cutting edge 12 and the second cutting edge 14 provide a reaction force to the food, causing it to flip and disturb, allowing uncut food to enter the working range of the first cutting part 11 more likely, thus improving the working efficiency of the first cutting part 11. Compared to blades that bend to increase the working range, the pulverizer experiences less resistance when rotating, and its straight structure provides better dynamic balance. During pulverization, the pulverizer generates less vibration noise and can rotate at higher speeds, further improving its pulverization efficiency. Along the axial direction of the blade holder 3, the axial width of the first cutting edge 12 is less than the axial width of the second cutting edge 14. Compared to having only the second cutting edge 14, the first cutting edge 12 reduces the length-to-width ratio of the end of the first cutting part 11, increasing the end strength of the first cutting part 11.

[0037] Please refer to Figure 1 and Figure 3 The angles between the first cutting edge 12 and the cutting plane 4, and between the second cutting edge 14 and the cutting plane 4, are both <15°. The smaller these angles are, the smaller the reaction force generated when the first cutting part 11 collides with the food, ensuring the upper limit of the acceleration and rotation speed of the first blade 1, and comprehensively improving the crushing efficiency of the first blade 1. Specifically, the higher the acceleration of the first blade 1, the longer the effective high-speed crushing time of the first blade 1, the higher the upper limit of the rotation speed of the first blade 1, and the more times it collides with the food per unit time.

[0038] Preferably, the side of the first cutting part 11 facing away from the rotation direction of the blade shank 3 is the blade back 15. The edge of the blade back 15 is chamfered. The chamfer can be a straight chamfer or a rounded chamfer, which softens the lines of the blade back 15, reduces the resistance to the flow of food at the blade back 15, and further reduces the resistance when the first blade 1 rotates.

[0039] Please refer to Figure 1 and Figure 3 Three first cutting sections 11 are arranged around the cutter bar 3. The three first cutting sections 11 are evenly arranged around the circumference of the cutter bar 3. When the cutter bar 3 rotates, the circumferentially arranged first cutting sections 11 can evenly distribute the centrifugal force generated by the rotation, improve the balance performance of the crusher blade during rotation, reduce the vibration and noise of the crusher blade during rotation, and support its high-speed rotation.

[0040] Preferably, there is a rounded transition between adjacent first cutting portions 11. This softens the connecting lines between adjacent first cutting portions 11 and reduces the resistance when they collide with food.

[0041] The specific workflow of this embodiment is as follows:

[0042] When the shank 3 rotates, it transmits torque to the first cutter 1 through the fit between the straight edge 161 and the outer diameter of the shank 3, causing the shank 3 to drive the first cutter 1 to rotate synchronously. The tip 13 of the rotating first cutter 1 continuously impacts the food within the cutting plane 4. During this process, some of the food comes into contact with the first cutting edge 12 and the second cutting edge 14. When the first cutting edge 12 and the second cutting edge 14, which are inclined to the cutting plane, come into contact with the food, they provide a reaction force to the food, causing it to flip and disturb. At the same time, the structure, such as the angle between the first cutting edge 12 and the second cutting edge 14 and the cutting plane 4 being less than 15°, the first cutting parts 11 being evenly distributed around the blade axis, the chamfering at the blade back 15, and the rounded transition between adjacent first cutting parts 11, significantly reduces the resistance during the rotation of the first cutter 1, making it easier for the first cutter 1 to quickly increase its rotation speed and maintain a high rotation speed.

[0043] Example 2

[0044] Figure 6 A bottom view of the first blade in the shredder of Embodiment 2 of this disclosure is shown. Please refer to... Figure 6The structure and workflow of Embodiment 2 are largely the same as those of Embodiment 1. The difference is that the first cutting part 11, away from the side of the blade holder 3, gradually bends into an arc shape towards the side opposite to the rotation direction of the blade holder 3. Correspondingly, the blade tip 13 is also arc-shaped. When crushing food, the food comes into contact with the blade tip 13 and is cut. During the cutting process, the food moves along the arc-shaped blade tip 13. That is, in addition to the blade tip 13 impacting and cutting the food, the food is also cut by sliding along the blade tip 13. When the food slides along the blade tip 13, part of the impact force on the food can be dissipated, thereby reducing the impact force between the first blade 1 and the food, reducing the motor load, and facilitating the high-speed rotation of the first blade 1.

[0045] Example 3

[0046] Figure 7 A three-dimensional structural schematic diagram of the shredder in Embodiment 3 of this disclosure is shown. Please refer to... Figure 7 The blade holder 3 is also equipped with a second blade 2. The second blade 2 is arranged parallel to the first blade 1. The second blade 2 includes a second cutting portion 21 extending away from the blade holder 3. The second cutting portion 21 bends away from the first blade 1, increasing the working range along the axial direction of the blade holder 3. The additional second blade 2 improves the versatility of the shredder. Specifically, the second blade 2 can be a serrated blade or a wavy blade, etc., to adapt to different ingredients. For example, when shredding ice, the second blade 2 can be a serrated blade. By utilizing the raised edge of the serrated blade, the ice is quickly broken through the stress concentration effect, effectively improving the efficiency of the shredder in shredding ice.

[0047] Preferably, the first cutting part 11 and the second cutting part 21 are staggered along the axial direction of the cutter bar 3. When the cutter bar 3 drives the first cutter 1 and the second cutter 2 to rotate, the staggered first cutting part 11 and the second cutting part 21 can continuously cut the food, effectively increasing the cutting frequency of the food and thus improving the crushing efficiency.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pulverizing knife characterized by, The shredder includes: Tool holder; A first cutting tool is sleeved on the tool holder; the first cutting tool includes a first cutting portion perpendicular to the tool holder; a cutting edge is provided on the side of the first cutting portion facing the rotation direction of the tool holder; the cutting edge includes a first cutting edge and a second cutting edge that intersect each other; Wherein, the plane in which the first tool rotates about the axis of the tool holder is the cutting plane; the first cutting edge and the second cutting edge are inclined relative to the cutting plane; along the axis of the tool holder, the axial width of the first cutting edge is less than the axial width of the second cutting edge.

2. The pulverizing blade of claim 1, wherein: The angle between the first cutting edge and the cutting plane, and the angle between the second cutting edge and the cutting plane, are both <15°.

3. The pulverizing blade of claim 1, wherein: Three first cutting portions are provided around the tool holder; the three first cutting portions are evenly arranged around the circumference of the tool holder.

4. The pulverizing blade of claim 1, wherein: The side of the first cutting part that is away from the rotation direction of the tool holder is the back of the tool; the edge of the back of the tool is chamfered.

5. The pulverizing blade of claim 1 wherein: There is a circular arc transition between adjacent first cutting sections.

6. The pulverizing blade of claim 1 wherein: The first cutting tool has a connecting hole; the first cutting tool is connected to the tool holder through the connecting hole; the connecting hole is a hole with a straight edge around the axis of the tool holder.

7. The pulverizing knife as set forth in claim 1, wherein: The first cutting part, on the side away from the tool holder, gradually bends into an arc shape towards the side opposite to the rotation direction of the tool holder.

8. The pulverizing knife as set forth in claim 1, wherein: The tool holder is also provided with a second tool; the second tool is arranged parallel to the first tool; the second tool includes a second cutting portion extending away from the tool holder; the second cutting portion is bent away from the first tool.

9. The pulverizing blade of claim 8, wherein: Along the axial direction of the tool holder, the first cutting portion and the second cutting portion are arranged alternately.

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