Ultrafine grinding device for coffee processing
By combining crushing blades and grinding rollers with a quantitative feeding design, the problems of uneven grinding and clogging of coffee beans are solved, achieving a finer grinding effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PUER JINMAN COFFEE CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-06-19
AI Technical Summary
Existing coffee bean grinding devices take a long time to grind coffee beans with larger diameters and tend to accumulate, resulting in insufficient grinding and some beans being blocked from making adequate contact.
The coffee beans are initially crushed by shredding blades, then crushed a second time by a grinding roller, and intermittently metered feeding by pusher blocks and baffles ensures that the beans enter the grinding stage evenly, and then finely ground using grinding blocks.
It improves grinding efficiency, avoids clogging, ensures that coffee beans are evenly distributed into subsequent processing, and achieves a finer grind size.
Smart Images
Figure CN224371620U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coffee bean grinding technology, specifically to an ultrafine grinding device for coffee processing. Background Technology
[0002] Coffee powder processing refers to the process of turning roasted coffee beans into powder through grinding. Currently, when grinding coffee beans into powder, the processing equipment directly feeds them into the grinding device, and the grinding operation is carried out through the gap between the grinding blocks and the grinding chamber. However, because some coffee beans have a large diameter, the grinding time can be long. In addition, the direct feeding of coffee beans can easily cause them to pile up, and some coffee beans may be blocked by other beans, resulting in insufficient contact between the grinding blocks, which leads to a less fine grind and a reduced grinding effect. Utility Model Content
[0003] In order to solve the above problems, the purpose of this utility model is to provide an ultrafine grinding device for coffee processing.
[0004] To solve the above technical problems, the present invention adopts the following technical solution: an ultrafine grinding device for coffee processing, comprising a feeding box, wherein two symmetrically arranged first drive shafts are rotatably arranged inside the feeding box, and cross-arranged crushing blades are fixedly arranged on the two first drive shafts inside the feeding box. The ends of the two first drive shafts pass through the feeding box and are connected by two meshing first gears. Two symmetrically arranged crushing rollers are rotatably arranged at the bottom of the feeding box, and second drive shafts are fixedly arranged at the ends of the two crushing rollers and rotatably pass through the feeding box. One end of the second drive shaft passing through the feeding box is connected by two meshing second gears. Two symmetrically distributed and inclined second feeding plates are fixedly arranged inside the feeding box between the crushing blades and crushing rollers. A baffle is provided between the two second feeding plates below. One end of the baffle movably passes through the feeding box and has a movable groove at its end. A push block is rotatably arranged in the movable groove, and a rotating plate is fixedly arranged at the bottom of the push block. A rotating shaft is fixedly arranged at the end of the rotating plate away from the push block.
[0005] A processing box is fixedly provided at the bottom of the feeding box, and a horizontal plate is fixedly provided at the bottom of the processing box. A grinding block is rotatably provided on the upper surface of the horizontal plate. The top of the grinding block is spherical, and a grinding groove is formed between the grinding block and the processing box.
[0006] Preferably, the top of the feeding box is fixedly provided with a first feeding plate that is the same as the second feeding plate.
[0007] Preferably, the bottom side wall of the processing box is fixedly provided with an upwardly inclined scraper near the rolling roller, and the end of the scraper abuts against the rolling roller.
[0008] Preferably, a protective cover is fixedly provided at the bottom of the horizontal plate, and a horizontally arranged rotating rod is rotatably provided on the protective cover. The rotating rod and the output end of the grinding block rotating on the horizontal plate are connected inside the protective cover by two meshing bevel gears. A second motor is fixedly provided on the outer wall of the processing box near the rotating rod, and the output end of the second motor is coaxially fixed on the rotating rod.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0010] 1. The coffee beans are initially crushed by the pulverizing blades, reducing the volume of the larger diameter coffee beans. The crushing rollers rotate in opposite directions to crush the crushed coffee beans a second time, further reducing the diameter of the raw material. This provides more uniform fine particles for subsequent grinding, laying the foundation for fine grinding and improving the grinding effect.
[0011] 2. By using the combination of pusher and baffle, intermittent quantitative feeding is achieved, avoiding excessive feeding at one time that could cause blockage of the grinding chamber. At the same time, it solves the problems of coffee bean accumulation and partial bean obstruction in traditional feeding methods, ensuring that the raw materials enter the subsequent processing stages evenly. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the internal structure of the feed box of this utility model.
[0015] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.
[0016] Figure 4 This is a schematic diagram of the processing box structure of this utility model.
[0017] In the diagram: 1. Feed box; 11. First feeding plate; 12. First drive shaft; 13. Crushing blade; 14. First gear; 2. Second feeding plate; 21. Baffle; 22. Movable groove; 23. Push block; 24. Rotating plate; 25. First motor; 26. Rotating shaft; 3. Second drive shaft; 31. Crushing roller; 32. Second gear; 33. Scraper; 4. Processing box; 41. Grinding block; 42. Horizontal plate; 43. Rotating rod; 44. Second motor. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Example: Figure 1-4 As shown, this utility model provides an ultrafine grinding device for coffee processing, including a feeding box 1. Two symmetrically arranged first drive shafts 12 are rotatably mounted inside the feeding box 1. Cross-arranged grinding blades 13 are fixedly mounted on the two first drive shafts 12 within the feeding box 1. The ends of the two first drive shafts 12 penetrate the feeding box 1 and are connected by two meshing first gears 14. Two symmetrically arranged grinding rollers 31 are rotatably mounted at the bottom of the feeding box 1. Second drive shafts 3 are fixedly mounted on the ends of the two grinding rollers 31 and rotatably penetrate the feeding box 1. The feed box 1 and the second drive shaft 3 are connected through two meshing second gears 32 through one end of the feed box 1. Inside the feed box 1, between the crushing blade 13 and the crushing roller 31, there are two symmetrically distributed and inclined second feeding plates 2. There is a baffle 21 between the two second feeding plates 2. One end of the baffle 21 is movably inserted through the feed box 1 and has a movable groove 22 at the end. A push block 23 is rotatably arranged in the movable groove 22 and a rotating plate 24 is fixedly arranged at the bottom of the push block 23. A rotating shaft 26 is fixedly arranged at the end of the rotating plate 24 away from the push block 23.
[0020] A processing box 4 is fixedly provided at the bottom of the feeding box 1. A horizontal plate 42 is fixedly provided at the bottom of the processing box 4. A grinding block 41 is rotatably provided on the upper surface of the horizontal plate 42. A grinding groove is formed between the grinding block 41 and the processing box 4.
[0021] A support plate is fixedly installed on the outer wall of the feed box 1 below the rotating shaft 26. A first motor 25 is fixedly installed on the lower surface of the support plate. The output end of the first motor 25 is coaxially fixed on the rotating shaft 26. The first motor 25 can provide power for the rotation of the rotating shaft 26, which is convenient for the operator to operate.
[0022] The top of the feed box 1 is fixedly provided with a first feeding plate 11 that is the same as the second feeding plate 2. The first feeding plate 11 facilitates the input of raw materials to enter the middle of the crushing blade 13, so that the crushing blade 13 can crush the coffee beans.
[0023] A scraper 33 with an upward inclination is fixedly provided on the bottom side wall of the processing box 4 near the crushing roller 31. The end of the scraper 33 abuts against the crushing roller 31. The scraper 33 can clean the coffee bean raw material accumulated on the surface of the crushing roller 31 and make it fall below, so as to avoid the accumulation of raw material and waste.
[0024] The top of the grinding block 41 is spherical, which prevents fallen coffee beans from accumulating on the grinding block 41 and instead allows them to fall between the grinding block 41 and the grinding chamber for grinding.
[0025] A protective cover is fixedly installed at the bottom of the horizontal plate 42. A horizontally arranged rotating rod 43 is rotatably installed on the protective cover. The rotating rod 43 and the output end of the grinding block 41 rotating on the horizontal plate 42 are connected inside the protective cover by two meshing bevel gears. A second motor 44 is fixedly installed on the outer wall of the processing box 4 near the rotating rod 43. The output end of the second motor 44 is coaxially fixed on the rotating rod 43. The second motor 44 can provide power for the rotation of the grinding block 41 to grind the coffee bean raw material.
[0026] Working principle: During use, the operator puts the raw materials into the top of the feed box 1. The coffee beans are concentrated into the grinding blades 13 by the first feeding plate 11. The two grinding blades 13 are connected by two meshing first gears 14. A servo motor is set at the end of one of the first drive shafts 12, which can make the two first drive shafts 12 rotate in opposite directions at the same time. This makes the grinding blades 13 crush the coffee beans first, reducing the volume of coffee bean raw materials. After passing through the grinding blades 13, the coffee beans will fall onto the two second feeding plates 2. At this time, the first motor 25 drives the rotating shaft 26 to drive the rotating plate 24 to rotate continuously. The push block 23 fixed at the end of the rotating plate 24 will move from one end to the other in the movable groove 22. During this process, the rotating shaft 26 pushes the push block 23 to push the baffle 21 back and forth through the rotating plate 24, thereby controlling the movable plate baffle 21 to open the gap between the two second feeding plates 2 intermittently, so that the material can be fed in a quantitative manner each time, avoiding excessive material feeding at one time, which will cause subsequent grinding blockage.
[0027] After being crushed by the second feeding plate 2, the raw material will be concentrated between the two crushing rollers 31. The two second drive shafts 3 are connected by two meshing second gears 32. When one of the second drive shafts 3 is driven to rotate by a servo motor, the two crushing rollers 31 will rotate in opposite directions at the same time to crush the crushed coffee bean raw material again, so that the diameter of the coffee bean raw material will be reduced again. The raw material that passes through the crushing rollers 31 will fall into the grinding block 41 below and the inner wall of the processing box 4. A grinding groove is formed between the grinding block 41 and the processing box 4. The second motor 44 drives the rotating rod 43 to rotate with the two meshing bevel gears, which will drive the grinding block 41 to rotate. At this time, the rotating grinding block 41 will perform the final grinding operation on the raw material that has entered the grinding groove.
[0028] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be described in detail here.
[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. An ultrafine grinding device for coffee processing comprising a feed tank (1), characterized in that: The feed box (1) is equipped with two symmetrically arranged first drive shafts (12) inside. The two first drive shafts (12) are fixedly equipped with cross-arranged crushing blades (13) inside the feed box (1). The ends of the two first drive shafts (12) pass through the feed box (1) and are connected by two meshing first gears (14). The bottom of the feed box (1) is equipped with two symmetrically arranged crushing rollers (31). The ends of the two crushing rollers (31) are fixedly equipped with second drive shafts (3), and the second drive shafts (3) rotate through the feed box (1). One end is connected by two meshing second gears (32). Inside the feed box (1), two symmetrically distributed and inclined second feeding plates (2) are fixed between the crushing blade (13) and the crushing roller (31). A baffle (21) is provided between the two second feeding plates (2). One end of the baffle (21) movably passes through the feed box (1) and the end is provided with a movable groove (22). A push block (23) is rotatably provided in the movable groove (22), and a rotating plate (24) is fixedly provided at the bottom of the push block (23). A rotating shaft (26) is fixedly provided at the end of the rotating plate (24) away from the push block (23). The bottom of the feed box (1) is fixedly provided with a processing box (4), and the bottom of the processing box (4) is fixedly provided with a horizontal plate (42) arranged horizontally. A grinding block (41) is rotatably provided on the upper surface of the horizontal plate (42), and a grinding groove is formed between the grinding block (41) and the processing box (4).
2. An ultrafine grinding device for coffee processing as claimed in claim 1, characterized in that, The outer wall of the feed box (1) is fixedly provided with a support plate below the rotating shaft (26), and a first motor (25) is fixedly provided on the lower surface of the support plate. The output end of the first motor (25) is coaxially fixed on the rotating shaft (26).
3. An ultrafine grinding device for coffee processing as claimed in claim 2, characterized in that, The top of the feed box (1) is fixedly provided with a first feed plate (11) that is the same as the second feed plate (2).
4. An ultrafine grinding device for coffee processing as claimed in claim 3, characterized in that, The bottom side wall of the processing box (4) is fixed with an upwardly inclined scraper (33) near the rolling roller (31), and the end of the scraper (33) abuts against the rolling roller (31).
5. An ultrafine grinding device for coffee processing as claimed in claim 4, characterized in that, The top of the grinding block (41) is spherical.
6. An ultrafine grinding device for coffee processing as claimed in claim 5, characterized in that, A protective cover is fixedly provided at the bottom of the horizontal plate (42). A horizontally arranged rotating rod (43) is rotatably provided on the protective cover. The rotating rod (43) and the output end of the grinding block (41) rotating on the horizontal plate (42) are connected inside the protective cover by two meshing bevel gears. A second motor (44) is fixedly provided on the outer wall of the processing box (4) near the rotating rod (43). The output end of the second motor (44) is coaxially fixed on the rotating rod (43).