Coffee grinder with grind adjustment

Abstract

This utility model relates to the technical field of coffee grinding devices, specifically to a coffee grinding device with fine-tuning function. It includes a frame with a grinding chamber inside. The grinding chamber has a feed inlet at the top and a sieving chamber at the bottom. A grinding layer is slidably disposed inside the grinding chamber. Electric push rods are symmetrically installed on the bottom wall of the grinding chamber, and the output end of each electric push rod is fixedly connected to the grinding layer. This utility model, through the electric push rods, can adjust the distance between the coffee beans and the grinding blocks by pushing the grinding layer upwards during grinding. A smaller distance ensures full contact between the coffee beans and the grinding blocks, effectively improving grinding efficiency and quality. Through the combined use of the grinding layer, filter, vibrator, and spring, the ground coffee can be sieved and repeatedly ground to ensure the fineness of the ground coffee particles meets requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of coffee grinding devices, specifically to a coffee grinding device with fine-tuning function of grinding degree. Background Technology

[0002] The background technology of coffee grinding devices can be traced back to early manual grinding tools, such as the cast iron coffee grinders popular in the 19th century, which achieved coarse grinding by manually rotating the grinding disc to squeeze coffee beans. Modern technology has gradually shifted to conical or flat grinding disc designs, controlling the grinding particle size by adjusting the spacing between the grinding discs, and using ceramic or steel grinding cores to reduce heat accumulation. At the same time, functions such as quantitative grinding and electronic speed control have been introduced to adapt to different extraction methods such as espresso and pour-over.

[0003] Existing coffee grinding devices require manual filtration after grinding to check for unground particles. This filtration is then repeated before a second grinding, increasing the workload and preventing sufficient filtration and selection of unqualified particles for repeated grinding. Furthermore, the transmission-based coffee grinding devices lack an auxiliary flattening structure, resulting in unground coffee powder flying during use and causing waste.

[0004] Therefore, it is necessary to invent a coffee grinding device with fine-tuning function to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a coffee grinding device with fine-tuning function. Through the combined use of a grinding layer, filter, vibrator, and spring, the ground coffee can be sieved and repeatedly ground to ensure the fineness of the ground coffee particles meets requirements. When the slider moves along the chute to control the movement of the feed box, the slider will squeeze the arc-shaped block during movement, pushing the limiting block into the limiting cavity, causing the positioning block to separate from the positioning groove. The gravity block, no longer in a positioning state, will fall downwards due to its own weight, using the gravity block to flatten the coffee powder in the feed box, preventing coffee powder from flying out of the feed box. The movable operating handle in the limiting groove assists in driving the gravity block back into position and re-inserting it with the positioning block, facilitating the feed box's removal by sliding along the chute with the slider. This improves usability and solves the problems of existing technologies that cannot adequately filter and screen coffee powder multiple times, selecting unqualified coffee particles for repeated grinding until qualified, and the lack of an auxiliary flattening structure in the transmission coffee grinding device, resulting in flying coffee powder during removal and waste.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coffee grinding device with fine-tuning function, comprising a device frame, a grinding chamber inside the device frame, a feed inlet at the top of the grinding chamber, a sieving chamber at the bottom of the grinding chamber, a grinding layer slidably disposed inside the grinding chamber, electric push rods symmetrically installed on the bottom wall of the grinding chamber, the output end of the electric push rods being fixedly connected to the grinding layer, grooves symmetrically formed on the inner wall of the sieving chamber, support blocks fixedly disposed inside each of the two grooves, a filter screen fixedly connected between the two support blocks, a vibrator installed between the bottom of the support block and the groove, and two springs fixedly connected between the bottom of the support block and the groove, the two springs being located on the front and rear sides of the vibrator respectively, and two filter screens.

[0007] Preferably, a sliding groove is provided on the front side of the device frame, and a slider is slidably installed inside the sliding groove. A material box located below the screening chamber is fixed on the front side of the slider.

[0008] Preferably, the device frame has an internal movable groove, a limit groove is provided on the side of the movable groove, a gravity block is slidably arranged inside the movable groove, a spring is fixedly connected between the top of the gravity block and the movable groove, and an operating handle matching the limit groove is fixedly connected to the side of the gravity block.

[0009] Preferably, the device frame has a limiting cavity located behind the movable groove, a limiting block is slidably arranged inside the limiting cavity, a spring is fixedly connected between the rear side of the limiting block and the limiting cavity, a positioning block is fixedly connected to the front side of the limiting block, and a positioning groove matching the positioning block is provided on the rear side of the gravity block.

[0010] Preferably, an arc-shaped block is fixedly connected to the front side of the limiting block, and the arc-shaped block cooperates with the sliding groove.

[0011] Preferably, a grinding motor is installed at the top of the grinding chamber, the output shaft of the grinding motor is fixedly connected to a rotating shaft via a coupling, a grinding block is fixed at the lower end of the rotating shaft, and a telescopic tube is fixedly connected between the bottom of the grinding layer and the screening chamber, with the lower end of the telescopic tube fixedly connected to the screening chamber.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] 1. The electric push rod can be used to push the grinding layer upwards during grinding to adjust the distance between the coffee beans and the grinding blocks. The smaller the distance, the more fully the coffee beans and grinding blocks can contact each other, which can effectively improve the grinding efficiency and grinding quality of coffee. Through the combined use of the grinding layer, filter screen, vibrator and spring, the ground coffee can be sieved and repeatedly ground to ensure that the fineness of the ground coffee particles meets the requirements.

[0014] 2. When the slider moves along the chute to control the movement of the coffee box, the slider will squeeze the arc-shaped block during the movement and push the limiting block into the limiting cavity, causing the positioning block to separate from the positioning groove. Then, the gravity block, which is no longer in the positioning state, will fall downwards due to its own weight. The gravity block is used to flatten the coffee powder in the coffee box, preventing the coffee powder from flying out of the coffee box after it is taken out. The gravity block is then moved back to its original position by the movable operating handle in the limiting groove and re-inserted into the positioning block to achieve positioning. This makes it easy for the coffee box to slide out along the chute with the slider, which is convenient for use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the front view of the present invention;

[0019] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0020] Figure 5 This is a side sectional view of the connection between the device frame, the material box, and the gravity block of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Frame; 2. Grinding chamber; 3. Feed inlet; 4. Screening chamber; 5. Grinding layer; 6. Electric push rod; 7. Groove; 8. Support block; 9. Filter screen; 10. Vibrator; 11. Spring 1; 12. Slide groove; 13. Sliding block; 14. Material box; 15. Movable groove; 16. Limiting groove; 17. Gravity block; 18. Spring 2; 19. Operating handle; 20. Limiting chamber; 21. Limiting block; 22. Spring 3; 23. Positioning block; 24. Positioning groove; 25. Arc-shaped block; 26. Grinding motor; 27. Rotating shaft; 28. Grinding block; 29. ​​Telescopic tube. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-5 The coffee grinding device shown includes a frame 1, a grinding chamber 2 inside the frame 1, a feed inlet 3 at the top of the grinding chamber 2, a sieving chamber 4 at the bottom of the grinding chamber 2, a grinding layer 5 slidably disposed inside the grinding chamber 2, and electric push rods 6 symmetrically installed on the bottom wall of the grinding chamber 2. The output end of the electric push rod 6 is fixedly connected to the grinding layer 5. The output of the electric push rod 6 pushes the grinding layer 5 upward to adjust the distance between the grinding layer 5 and the grinding block 28. The smaller the distance, the more fully the coffee beans are in contact with the bottom of the grinding block 28, and the better the grinding effect. During grinding, coffee particles of the correct size will pass through the grinding layer 5 and the telescopic tube 29 into the sieving chamber 4. Unqualified coffee particles will be filtered and repeatedly ground on the grinding layer 5 until they pass through the grinding layer 5 smoothly.

[0025] The inner wall of the sieving chamber 4 is symmetrically provided with grooves 7. Support blocks 8 are fixedly installed inside each of the two grooves 7. Filter screens 9 are fixedly connected between the two support blocks 8. A vibrator 10 is installed between the bottom of the support block 8 and the groove 7. Two springs 11 are fixedly connected between the bottom of the support block 8 and the groove 7. The two springs 11 are located on the front and rear sides of the vibrator 10, respectively. There are two filter screens 9. When the vibrator 10 is turned on, the two filter screens 9 vibrate up and down to sieve and filter the coffee particles on the filter screens 9 until qualified powder coffee is finally collected in the material box 14.

[0026] The front side of the device frame 1 is provided with a slide groove 12. A slider 13 is slidably installed inside the slide groove 12. A material box 14 located below the screening chamber 4 is fixed on the front side of the slider 13. The slider 13 can move the material box 14 by sliding along the slide groove 12 until it slides to the right end of the slide groove 12 and is removed.

[0027] The device frame 1 has an internal movable groove 15, and a limit groove 16 is provided on the side of the movable groove 15. A gravity block 17 is slidably arranged inside the movable groove 15. A spring 18 is fixedly connected between the top of the gravity block 17 and the movable groove 15. An operating handle 19 that matches the limit groove 16 is fixedly connected to the side of the gravity block 17. The operation handle 19 can control the movement of the gravity block 17 in the movable groove 15 by moving in the limit groove 16.

[0028] The device frame 1 has a limiting cavity 20 located behind the movable groove 15. A limiting block 21 is slidably arranged inside the limiting cavity 20. A spring 22 is fixedly connected between the rear side of the limiting block 21 and the limiting cavity 20. A positioning block 23 is fixedly connected to the front side of the limiting block 21. A positioning groove 24 matching the positioning block 23 is provided on the rear side of the gravity block 17. The sliding of the limiting block 21 in the limiting cavity 20 can control the insertion state of the positioning block 23 and the positioning groove 24.

[0029] An arc-shaped block 25 is fixedly connected to the front side of the limiting block 21. The arc-shaped block 25 cooperates with the slide groove 12. When the slider 13 slides in the slide groove 12, it will contact the arc-shaped block 25 and push it into the limiting cavity 20, which will cause the positioning block 23 to separate from the positioning groove 24, so that the gravity block 17 falls due to its own gravity.

[0030] A grinding motor 26 is installed on the top of the grinding chamber 2. The output shaft of the grinding motor 26 is fixedly connected to a rotating shaft 27 via a coupling. A grinding block 28 is fixed to the lower end of the rotating shaft 27. A telescopic tube 29 is fixedly connected between the bottom of the grinding layer 5 and the screening chamber 4. The lower end of the telescopic tube 29 is fixedly connected to the screening chamber 4.

[0031] The working principle of this practical application is as follows:

[0032] Coffee beans to be ground are poured into the grinding chamber 2 through the feed inlet 3. The grinding motor 26 is driven to work, and the grinding blocks 28 grind the coffee beans that fall on the grinding layer 5. To ensure thorough grinding, the electric push rod 6 is driven to push the grinding layer 5 upward, so that the ground beans on the grinding layer 5 fully contact the bottom of the grinding blocks 28. After grinding, qualified coffee particles smoothly pass through the grinding layer 5 and the telescopic tube 29 and fall onto the filter screen 9. The vibrator 10 is driven to work in conjunction with the spring 11 to make the filter screen 9 vibrate. The vibration force is used to screen the coffee particles and finally collect them in the feed box 14. The unqualified coffee particles filtered on the grinding layer 5 are ground again by the grinding blocks 28. The powder passes smoothly through the grinding layer 5 and the filter screen 9 and is finally collected in the material box 14. After the grinding work is completed, the material box 14 can be moved to the right by sliding the slider 13 along the slide groove 12. When the slider 13 contacts the arc-shaped block 25, it will push it into the limiting cavity 20. The limiting block 21 moves to separate the positioning block 23 from the positioning groove 24. The unfixed gravity block 17 falls into the material box 14 due to its own weight to flatten the powder. After the action is completed, continue to slide the slider 13 along the slide groove 12 to take out the material box 14. Then lift the operating handle 19 to drive the gravity block 17 to move upward until the positioning block 23 and the positioning groove 24 are re-inserted and the gravity block 17 returns to its original position for easy use next time.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A coffee grinding device with a grinding degree fine adjustment function, comprising a device frame (1), characterized in that: The device frame (1) has a grinding chamber (2) inside. The grinding chamber (2) has a feed inlet (3) at the top and a screening chamber (4) at the bottom. The grinding chamber (2) has a grinding layer (5) that slides inside. The bottom wall of the grinding chamber (2) is symmetrically equipped with electric push rods (6). The output end of the electric push rods (6) is fixedly connected to the grinding layer (5). The inner wall of the screening chamber (4) has symmetrically equipped with grooves (7). Support blocks (8) are fixedly installed inside each of the two grooves (7). A filter screen (9) is fixedly connected between the two support blocks (8). A vibrator (10) is installed between the bottom of the support block (8) and the groove (7). A spring (11) is fixedly connected between the bottom of the support block (8) and the groove (7). There are two springs (11). The two springs (11) are located on the front and rear sides of the vibrator (10) respectively. There are two filter screens (9).

2. A coffee grinder according to claim 1, characterized in that: The device frame (1) has a sliding groove (12) on the front side, and a slider (13) is slidably installed inside the sliding groove (12). A material box (14) located below the screening chamber (4) is fixed on the front side of the slider (13).

3. A coffee grinder according to claim 2, characterized in that: The device frame (1) has an internal movable groove (15), and a limit groove (16) is provided on the side of the movable groove (15). A gravity block (17) is slidably arranged inside the movable groove (15). A spring (18) is fixedly connected between the top of the gravity block (17) and the movable groove (15). An operating handle (19) matching the limit groove (16) is fixedly connected to the side of the gravity block (17).

4. A coffee grinder according to claim 3, characterized in that: The device frame (1) has a limiting cavity (20) located behind the movable groove (15) inside. A limiting block (21) is slidably arranged inside the limiting cavity (20). A spring (22) is fixedly connected between the rear side of the limiting block (21) and the limiting cavity (20). A positioning block (23) is fixedly connected to the front side of the limiting block (21). A positioning groove (24) matching the positioning block (23) is opened on the rear side of the gravity block (17).

5. A coffee grinder according to claim 4, characterized in that: An arc-shaped block (25) is also fixedly connected to the front side of the limiting block (21), and the arc-shaped block (25) cooperates with the slide groove (12).

6. The coffee grinder of claim 1, wherein: A grinding motor (26) is installed on the top of the grinding chamber (2). The output shaft of the grinding motor (26) is fixedly connected to a rotating shaft (27) via a coupling. A grinding block (28) is fixed at the lower end of the rotating shaft (27). A telescopic tube (29) is fixedly connected between the bottom of the grinding layer (5) and the screening chamber (4). The lower end of the telescopic tube (29) is fixedly connected to the screening chamber (4).

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