Grinding assembly for a grinder
By incorporating helical teeth and fine helical tooth extensions on the male grinding head of the grinder, the problems of clogging and adhesion in the grinder are solved, achieving efficient and uniform grinding results and meeting the requirements of high-quality products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN H&H PLASTIC ELECTRONIC CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-29
AI Technical Summary
Existing grinders are prone to clogging and sticking when grinding small oily particles, resulting in low grinding efficiency and uneven particle size in the finished product, which cannot meet the requirements of high-quality products.
A grinding assembly for a grinder is designed, wherein the upper part of the male grinding head is provided with a first helical tooth and the lower end of the helical fine tooth extends to the lower end face, which works with the female grinding head to perform coarse grinding and fine grinding, ensuring that the material is fed smoothly and discharged through the first groove to avoid clogging.
It improves grinding efficiency, ensures smooth material feeding, and produces finished particles with uniform coarseness, meeting the requirements of high-quality products.
Smart Images
Figure CN224291752U_ABST
Abstract
Description
Technical fields:
[0001] This utility model relates to the field of grinding technology, and specifically to a grinding component for a grinder. Background technology:
[0002] In daily life, seasonings such as pepper, Sichuan peppercorns, and coarse salt are originally in the form of blocks or granules. However, many dishes often taste better when using powdered seasonings. Therefore, there are ready-made powdered seasonings available on the market for people to buy and use directly. Although they are very convenient to use, powdered seasonings have a short shelf life, are susceptible to moisture, are prone to clumping, and their flavor is easily lost, affecting the taste. Therefore, with the continuous development of industrial technology, various types of grinders have emerged. Grinders allow people to grind seasonings in their original form into powder in real time while cooking, thus preserving the best flavor of the seasonings and enhancing people's enjoyment of the meal.
[0003] Chinese utility model patent application number 202120741192.7 discloses a grinding core, including a male grinding head and a female grinding head. The male grinding head is rotatably fitted inside the female grinding head. The outer peripheral wall of the male grinding head is provided with a second grinding tooth with multiple spiral teeth. The inner peripheral wall of the female grinding head is provided with a first grinding tooth with multiple spiral teeth. After the male grinding head is rotatably fitted into the female grinding head, multiple discharge ports are formed at the discharge end, with the size of one side of the discharge port being larger than the size of the other side. The cross-section of the first grinding tooth is a triangular structure, with the length of the first tooth side of the triangle being greater than the length of the second tooth side, and the length of the first tooth side being twice or more of the total tooth height. Compared with the prior art, because the size of one side of the discharge port is larger than the size of the other side, oily small particles are squeezed and ground on the smaller side and then carried to the larger side and fall off. This results in the oily small particles being flattened and ground, making it suitable for grinding oily small particles, and it has the characteristics of better grinding effect and better stability in use.
[0004] However, in actual use, because the lower end of the second grinding tooth on the outer peripheral wall of the male grinding head does not directly extend to the lower end face of the male grinding head (i.e., the discharge end), a columnar section is formed between the lower end of the second grinding tooth and the lower end face of the male grinding head. Furthermore, the outer surface of this columnar section protrudes from the groove between two adjacent second grinding teeth. This causes the smooth flow of the ground particles when the male and female grinding heads rotate relative to each other to grind oily small particles (such as sesame seeds). Consequently, it can cause adhesion and clumping, resulting in blockage. This necessitates frequent shutdowns for cleaning and leads to low grinding efficiency and uneven particle size in the finished product, failing to meet the requirements for high-quality products (such as sesame seed crumbs / powder).
[0005] In view of the above, the inventors propose the following technical solution. Utility Model Content:
[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a grinding component for a grinder.
[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the grinding component for the grinder includes a female grinding head and a male grinding head installed in the female grinding head. The upper periphery of the male grinding head is provided with a plurality of first helical teeth, and a first helical groove is formed between two adjacent first helical teeth. The lower periphery of the male grinding head is provided with a plurality of helical fine teeth, the lower end of which extends to the lower end face of the male grinding head, and the first groove formed between two helical fine teeth penetrates the lower end face of the male grinding head.
[0008] Furthermore, in the above technical solution, the mother grinding head is provided with a plurality of oblique fine teeth for cooperating with the spiral fine teeth to achieve fine grinding. The oblique fine teeth are spirally distributed on the outside of the spiral fine teeth, and the spiral direction of the oblique fine teeth is opposite to the spiral direction of the spiral fine teeth.
[0009] Furthermore, in the above technical solution, the upper end of the oblique fine tooth is provided with a second arc-shaped guide portion.
[0010] Furthermore, in the above technical solution, the cross-section of the spiral fine tooth is arc-shaped; the cross-section of the oblique fine tooth is arc-shaped.
[0011] Furthermore, in the above technical solution, the feed inlet at the upper end of the female grinding head gradually decreases in size from top to bottom, and the discharge outlet at the lower end of the female grinding head gradually decreases in size from bottom to top, and is connected to the feed inlet; the inner wall of the feed inlet is provided with a plurality of second helical teeth, which are located outside the first helical teeth, and a feed inclined groove of varying depth is formed between two adjacent second helical teeth; the inner wall of the discharge outlet is provided with a plurality of third helical teeth, which are distributed around the helical fine teeth, and a discharge inclined groove of varying depth is formed between two adjacent third helical teeth, and the inner wall of the discharge inclined groove is formed with the aforementioned oblique fine teeth.
[0012] Furthermore, in the above technical solution, the slope a of the bottom of the feed inclined groove is 67.5°±15°; and the slope b of the bottom of the discharge inclined groove is 82°±15°.
[0013] Furthermore, in the above technical solution, the slope c of the second helical tooth profile is 25.5°±15°; the slope d of the triple helical tooth profile is 39.5°±15°.
[0014] Furthermore, in the above technical solution, the diameter D1 of the upper end of the male grinding head is 14.5mm±2mm, the diameter D2 of the lower end of the male grinding head is 77mm±2mm, and the side slope e between the upper and lower ends of the male grinding head is 77°±2°.
[0015] Furthermore, in the above technical solution, the deepest part of the first spiral groove is 2.5mm.
[0016] Furthermore, in the above technical solution, the depth / height of the spiral fine tooth is 0.4-1.0 mm, and the inclination f of the spiral fine tooth is 77°±2°.
[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The male grinding head 2 in the present invention uses the upper first spiral tooth shape to cooperate with the female grinding head for coarse grinding (or coarse cutting) and material guiding, so that materials such as sesame seeds fall more smoothly to the spiral fine teeth, and then the lower spiral fine teeth cooperate with the female grinding head for fine grinding. Since the lower end of the spiral fine teeth extends to the lower end face of the male grinding head, and the first groove formed between the two spiral fine teeth penetrates the lower end face of the male grinding head, the crushed or powdered material formed after the spiral fine teeth cooperate with the female grinding head to grind the materials such as sesame seeds can be directly discharged through the first groove into the gap between the male and female grinding heads, ensuring smooth material feeding, so as not to cause adhesion and blockage, eliminating the need for frequent machine shutdown for cleaning, thereby improving grinding efficiency, and the finished product particles are more uniform in size, meeting the requirements of high-quality products (such as sesame crushed / powdered). Attached image description:
[0018] Figure 1 This is a perspective view of the present invention;
[0019] Figure 2 This is a perspective view of the present invention from another angle;
[0020] Figure 3 This is an exploded perspective view of the present invention;
[0021] Figure 4 This is a front view of the grinding head in this utility model;
[0022] Figure 5 This is a top view of the grinding head in this utility model;
[0023] Figure 6 This is a bottom view of the grinding head in this utility model;
[0024] Figure 7 This is a cross-sectional view of the female grinding head in this utility model;
[0025] Figure 8 This is a bottom view of the female grinding head in this utility model;
[0026] Figure 9 This is a top view of the female grinding head in this utility model. Detailed implementation method:
[0027] The present invention will be further described below with reference to specific embodiments and accompanying drawings.
[0028] See Figure 1-9 As shown, a grinding assembly for a grinder includes a female grinding head 1 and a male grinding head 2 installed inside the female grinding head 1. The male grinding head 2 rotates relative to the female grinding head 1 and can grind and crush objects in the gap between the male grinding head 2 and the female grinding head 1 to meet the usage requirements. This is the function of a grinding assembly in a conventional grinder.
[0029] This invention is applicable to grinding small-particle oily spices, such as sesame seeds, cloves, fennel, Sichuan peppercorns, black pepper, and sea salt, achieving three core functions: rapid powder production, non-sticking, and fine grinding, while reducing material costs and improving grinding efficiency. To this end, this invention features a specially structured grinding head 2: The upper periphery of the grinding head 2 is provided with multiple first helical teeth 21, and a first helical groove 22 is formed between adjacent first helical teeth 21; the lower periphery of the grinding head 2 is provided with multiple fine helical teeth 23, the lower end of which extends to the lower end face of the grinding head 2, and a first groove 24 formed between two fine helical teeth 23 penetrates the lower end face of the grinding head 2.
[0030] In this invention, the male grinding head 2 uses an upper first spiral tooth 21 to cooperate with the female grinding head 1 for coarse grinding (or coarse cutting) and material guiding, allowing materials such as sesame seeds to fall more smoothly onto the spiral fine teeth 23. Then, the lower spiral fine teeth 23 cooperate with the female grinding head 1 for fine grinding. Since the lower end of the spiral fine teeth 23 extends to the lower end face of the male grinding head 2, and the first groove 24 formed between the two spiral fine teeth 23 penetrates the lower end face of the male grinding head 2, the crushed or powdered material formed after the spiral fine teeth 23 cooperate with the female grinding head 1 to fine grind sesame seeds or other materials can be directly discharged through the first groove 24 into the gap between the male grinding head 2 and the female grinding head 1, ensuring smooth material feeding and preventing adhesion and blockage. This eliminates the need for frequent machine shutdowns for cleaning, thereby improving grinding efficiency and producing more uniform particle size in the finished product, meeting the requirements for high-quality products (such as crushed sesame seeds / powder).
[0031] In some embodiments, to further improve the uniformity of grinding, the following design is made: the female grinding head 1 is provided with a plurality of oblique fine teeth 11 for cooperating with the spiral fine teeth 23 to achieve fine grinding. The oblique fine teeth 11 are spirally distributed on the outside of the spiral fine teeth 23, and the spiral direction of the oblique fine teeth 11 is opposite to the spiral direction of the spiral fine teeth 23. When the oblique fine teeth 11 are adapted to the spiral fine teeth 23 to grind materials such as sesame seeds, it can improve the fineness of grinding and make the grinding more uniform. Moreover, since the spiral direction of the oblique fine teeth 11 is opposite to the spiral direction of the spiral fine teeth 23, it can better realize the feeding and achieve the purpose of rapid feeding.
[0032] In addition, when grinding small fine materials such as sesame seeds, the oblique fine teeth 11 provided in the mother grinding head 1 can also prevent the whole material from falling directly without being ground.
[0033] The upper end of the oblique fine tooth 11 is provided with a second arc-shaped guide part 111, so that when the spiral fine tooth 23 and the oblique fine tooth 11 work together to grind sesame and other materials, it can cut into the sesame and other materials better, so that the grinding is smoother.
[0034] In some embodiments, the cross-section of the spiral fine teeth 23 is arc-shaped; the cross-section of the oblique fine teeth 11 is arc-shaped. This design of the spiral fine teeth 23 and oblique fine teeth 11 can better compress materials such as sesame seeds to achieve grinding. At the same time, it also facilitates material guiding and feeding.
[0035] The feed inlet at the upper end of the female grinding head 1 gradually decreases in size from top to bottom, and the discharge outlet at the lower end of the female grinding head 1 gradually decreases in size from bottom to top, and connects with the feed inlet. This design of the female grinding head 1 allows for rapid feeding and rapid discharge. The inner wall of the feed inlet is provided with multiple second helical teeth 12, the slope c of which is 25.5°±15°. Preferably, the slope c of the second helical teeth 12 is 25.5°.
[0036] The second helical tooth 12 is located outside the first helical tooth 21, and a feeding inclined groove 13 with varying depths is formed between two adjacent second helical teeth 12. The bottom slope α of the feeding inclined groove 13 is 67.5°±15°. Preferably, the bottom slope α of the feeding inclined groove 13 is 67.5°.
[0037] The inner wall of the discharge port is provided with a plurality of third helical teeth 14, the inclination d of the third helical teeth 14 being 39.5°±15°, preferably, the inclination d of the third helical teeth 14 being 39.5°.
[0038] The third helical teeth 14 are distributed around the outer periphery of the helical fine teeth 23, and a discharge inclined groove 15, ranging from deep to shallow, is formed between two adjacent third helical teeth 14. The slope b of the bottom of the discharge inclined groove 15 is 82°±15°, preferably 82.5°. The inner wall of the discharge inclined groove 15 is formed with the inclined fine teeth 11.
[0039] The diameter D1 of the upper end of the male grinding head 2 is 14.5mm ± 2mm, preferably 14.5mm. Further, the diameter D2 of the lower end of the male grinding head 2 is 77mm ± 2mm, preferably 77mm.
[0040] Furthermore, the side slope e between the upper and lower ends of the male grinding head 2 is 77°±2°, preferably, the side slope e between the upper and lower ends of the male grinding head 2 is 77°.
[0041] The deepest part of the first spiral groove 22 is 2.5mm, which has the best material guiding effect, realizes rapid material feeding, and thus avoids material agglomeration and blockage during fine grinding in the later stage.
[0042] The depth / height of the spiral fine tooth 23 is 0.4-1.0 mm, preferably 0.7 mm. The angle f of the spiral fine tooth 23 is 77°±2°. Preferably, the angle f of the spiral fine tooth 23 is 77°.
[0043] The male grinding head 2 and female grinding head 1 in this invention are small in size. Through the second helical tooth profile 12, the third helical tooth profile 14, and the helical fine tooth 23 with the aforementioned inclination, more fine grinding can be achieved with the helical fine tooth 23 of the male grinding head 2. The grinding quality is better and the crushed material / powder formed by grinding is more uniform.
[0044] In summary, the male grinding head 2 of this utility model uses the upper first spiral tooth shape 21 to cooperate with the female grinding head 1 for coarse grinding (or coarse cutting) and material guiding, so that materials such as sesame seeds can fall more smoothly to the spiral fine teeth 23. Then, the lower spiral fine teeth 23 cooperate with the female grinding head 1 for fine grinding. Since the lower end of the spiral fine teeth 23 extends to the lower end face of the male grinding head 2, and the first groove 24 formed between the two spiral fine teeth 23 penetrates the lower end face of the male grinding head 2, the crushed or powdered material formed after the spiral fine teeth 23 cooperate with the female grinding head 1 to grind sesame seeds and other materials can be directly discharged through the first groove 24 into the gap between the male grinding head 2 and the female grinding head 1, ensuring smooth material feeding and preventing adhesion and blockage. It eliminates the need for frequent shutdowns for cleaning, thereby improving grinding efficiency and making the finished product particles more uniform in size, meeting the requirements of high-quality products (such as crushed sesame seeds / powder).
[0045] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.
Claims
1. A grinding assembly for a grinder, comprising a female grinding head (1) and a male grinding head (2) mounted within the female grinding head (1), characterized in that: The upper periphery of the male grinding head (2) is provided with a plurality of first helical teeth (21), and a first helical groove (22) is formed between two adjacent first helical teeth (21); the lower periphery of the male grinding head (2) is provided with a plurality of helical fine teeth (23), the lower end of the helical fine teeth (23) extends to the lower end face of the male grinding head (2), and the first groove (24) formed between two helical fine teeth (23) penetrates the lower end face of the male grinding head (2).
2. The grinding assembly for a grinder according to claim 1, characterized in that: The mother grinding head (1) is provided with a plurality of oblique fine teeth (11) for cooperating with the spiral fine teeth (23) to achieve fine grinding. The oblique fine teeth (11) are spirally distributed outside the spiral fine teeth (23), and the spiral direction of the oblique fine teeth (11) is opposite to the spiral direction of the spiral fine teeth (23).
3. The grinding assembly for a grinder according to claim 2, characterized in that: The upper end of the oblique fine tooth (11) is provided with a second arc-shaped guide (111).
4. The grinding assembly for a grinder according to claim 2, characterized in that: The cross-section of the spiral fine tooth (23) is arc-shaped; the cross-section of the oblique fine tooth (11) is arc-shaped.
5. The grinding assembly for a grinder according to claim 2, characterized in that: The feed inlet at the upper end of the mother grinding head (1) gradually decreases in size from top to bottom, and the discharge outlet at the lower end of the mother grinding head (1) gradually decreases in size from bottom to top and is connected to the feed inlet; the inner wall of the feed inlet is provided with a plurality of second helical teeth (12), which are located around the first helical teeth (21), and a feed inclined groove (13) from shallow to deep is formed between two adjacent second helical teeth (12); the inner wall of the discharge outlet is provided with a plurality of third helical teeth (14), which are distributed around the helical fine teeth (23), and a discharge inclined groove (15) from deep to shallow is formed between two adjacent third helical teeth (14), and the inner wall of the discharge inclined groove (15) is formed with the aforementioned oblique fine teeth (11).
6. The grinding assembly for a grinder according to claim 5, characterized in that: The bottom slope a of the feed inclined groove (13) is 67.5°±15°; the bottom slope b of the discharge inclined groove (15) is 82°±15°.
7. The grinding assembly for a grinder according to claim 5, characterized in that: The slope c of the second helical tooth profile (12) is 25.5°±15°; the slope d of the third helical tooth profile (14) is 39.5°±15°.
8. The grinding assembly for a grinder according to any one of claims 1-7, characterized in that: The diameter D1 of the upper end of the male grinding head (2) is 14.5mm ± 2mm, the diameter D2 of the lower end of the male grinding head (2) is 77mm ± 2mm, and the side slope e between the upper and lower ends of the male grinding head (2) is 77° ± 2°.
9. The grinding assembly for a grinder according to claim 8, characterized in that: The deepest part of the first spiral groove (22) is 2.5 mm.
10. The grinding assembly for a grinder according to claim 8, characterized in that: The depth / height of the spiral fine tooth (23) is 0.4-1.0 mm, and the slope f of the spiral fine tooth (23) is 77°±2°.