High-caffeine freeze-dried instant coffee powder making device

Abstract

The utility model belongs to the technical field of coffee powder making devices, and particularly relates to a high-caffeine freeze-drying instant coffee powder making device which comprises a grinding box and supporting legs fixed to the lower surface of the grinding box and further comprises a coarse grinding mechanism arranged on the surface of the grinding box. The coarse grinding mechanism comprises a feeding port and a discharging port which are formed in the surface of the grinding box, middle shafts are symmetrically and rotationally connected to the surface of the grinding box, grinding rollers are fixedly connected to the surfaces of the middle shafts, a material receiving hopper is arranged on the lower surface of each grinding roller, and a first inclined plate is arranged on the lower surface of each material receiving hopper; according to the utility model, the whole raw material can be crushed into fragments, and then coarse grinding is carried out, so that equipment abrasion or blockage caused by the fact that large particles directly enter a grinding cavity is avoided, the processing efficiency is improved, particle edges and corners can be effectively crushed, large particle residues are reduced, and coffee powder is finer and more uniform in particle size.

Description

A device for making high-caffeine freeze-dried instant coffee powder Technical Field

[0001] This utility model belongs to the technical field of coffee powder making device, specifically relating to a high-caffeine freeze-dried instant coffee powder making device. Background Technology

[0002] Instant coffee holds a significant position in the global coffee market due to its convenience, and high-caffeine instant coffee, as a functional beverage, is experiencing explosive growth in demand for scenarios such as energizing and replenishing energy during exercise. With the accelerating pace of modern life, consumers' demand for ready-to-drink energy drinks is increasingly strong. High-caffeine instant coffee, with its ability to quickly replenish energy and enhance focus, has become the preferred choice for office workers, athletes, and long-distance drivers. The precision and efficiency of the core process in instant coffee powder production directly affect the product's solubility, caffeine content, and production costs.

[0003] In this existing design, when using single-rolling or single-axis rotary grinding to directly grind the raw materials, large particles are prone to accumulate in the grinding chamber, blocking the material channel, causing a sudden increase in equipment load, and even causing the motor to overload and stop. This requires frequent interruptions of production for cleaning, which seriously affects production efficiency. Furthermore, the single motion mode can easily lead to uneven contact between the grinding stone and the material, resulting in uneven particle size. This can easily cause clumping during brewing, failing to meet the "instant" quality requirements of instant coffee.

[0004] To address this issue, a device for producing high-caffeine freeze-dried instant coffee powder was designed. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a high-caffeine freeze-dried instant coffee powder making device. Using this device, whole raw materials can be first broken into smaller pieces before coarse grinding, preventing large particles from directly entering the grinding chamber and causing equipment wear or blockage. This improves processing efficiency while effectively breaking down the sharp edges of particles, reducing large particle residue, and resulting in finer and more uniform coffee powder particles.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-caffeine freeze-dried instant coffee powder making device, including a grinding box and a support leg fixed on the lower surface of the grinding box, and also including a coarse crushing mechanism disposed on the surface of the grinding box;

[0007] The coarse crushing mechanism includes a feeding port and a discharging port formed on the surface of the grinding box. A central shaft is symmetrically rotatably connected to the surface of the grinding box. A crushing roller is fixedly connected to the surface of the central shaft. A receiving funnel is provided on the lower surface of the crushing roller. A first inclined plate is provided on the lower surface of the receiving funnel. The receiving funnel and the first inclined plate are fixedly connected to the grinding box. A grinding chamber is fixedly connected to the surface of the grinding box. The end of the first inclined plate away from the grinding box is fixedly connected to the grinding chamber. A second inclined plate is fixedly connected to the end of the grinding chamber away from the first inclined plate. A servo motor is mounted on the surface of the grinding box. A rotating shaft is fixedly connected to the output shaft of the servo motor. A first grinding stone is fixedly connected to the end of the rotating shaft away from the servo motor.

[0008] In a preferred embodiment of the high-caffeine freeze-dried instant coffee powder making device of this utility model, a sleeve is rotatably connected to the surface of the grinding box, the sleeve is fixedly connected to the rotating shaft, and five sets of second grinding stones are provided at the end of the sleeve away from the servo motor.

[0009] In a preferred embodiment of the high-caffeine freeze-dried instant coffee powder making device of this utility model, a first side baffle is symmetrically fixedly connected to the surface of the first inclined plate, and a second side baffle is symmetrically fixedly connected to the surface of the second inclined plate.

[0010] In a preferred embodiment of the high-caffeine freeze-dried instant coffee powder making device of this utility model, a limiting ring is fixedly connected to the surface of the sleeve, and a first limiting groove that cooperates with the limiting ring is opened on the surface of the grinding box.

[0011] As a preferred embodiment of the high-caffeine freeze-dried instant coffee powder making device of this utility model, it further includes a fine grinding mechanism disposed on the surface of the sleeve.

[0012] The fine grinding mechanism includes a circular plate rotatably connected to the inner surface of the sleeve, the circular plate being fixedly connected to the grinding box, the inner surface of the circular plate having a toothed groove, a pentagonal plate being fixedly connected to the surface of the servo motor, five sets of fixing rods being rotatably connected to the surface of the pentagonal plate, the bottom end of the fixing rod being fixedly connected to the second grinding stone, and a gear meshing with the toothed groove being fixedly connected to the surface of the fixing rod.

[0013] In a preferred embodiment of the high-caffeine freeze-dried instant coffee powder making device of this utility model, a connecting column is fixedly connected to the lower surface of the sleeve, the fixing rod rotates on the inner surface of the connecting column, a limiting block is fixedly connected to the surface of the fixing rod, and a second limiting groove that cooperates with the limiting block is opened on the surface of the connecting column.

[0014] As a preferred embodiment of the high-caffeine freeze-dried instant coffee powder making device of this utility model, it further includes an adjustment mechanism disposed on the surface of the grinding box.

[0015] The adjustment mechanism includes a threaded rod threadedly connected to the surface of the grinding box. One end of the threaded rod is rotatably connected to a C-shaped plate. The surface of the C-shaped plate is rotatably connected to the intermediate shaft. The end of the threaded rod away from the C-shaped plate is fixedly connected to a handle. The surface of the grinding box is symmetrically provided with sliding grooves that cooperate with the intermediate shaft.

[0016] As a preferred embodiment of the high-caffeine freeze-dried instant coffee powder making device of this utility model, the surface of the handle is engraved with anti-slip texture.

[0017] Compared with the prior art, the beneficial effects of this utility model are: it can first crush the whole raw material into small pieces and then perform coarse grinding, avoiding large particles from directly entering the grinding chamber and causing equipment wear or blockage. While improving processing efficiency, it can effectively break the edges of the particles, reduce the residue of large particles, make the coffee powder particles finer and more uniform, and have a compact structure, thus reducing internal consumption. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall invention.

[0020] Figure 2 is a schematic diagram of the crushing roller in this utility model;

[0021] Figure 3 is a schematic diagram of the sleeve in this utility model;

[0022] Figure 4 is a schematic diagram of the pentagonal plate in this utility model;

[0023] Figure 5 is a schematic diagram of the structure of the C-shaped plate in this utility model;

[0024] In the picture:

[0025] 1. Grinding box; 11. Support legs;

[0026] 2. Coarse crushing mechanism; 21. Feed inlet; 22. Discharge outlet; 23. Intermediate shaft; 24. Crushing roller; 25. Receiving funnel; 26. First inclined plate; 27. Grinding chamber; 28. Second inclined plate; 29. ​​Servo motor; 210. Rotating shaft; 211. First grinding stone; 212. Sleeve; 213. Second grinding stone; 214. First side baffle; 215. Second side baffle; 216. Limiting ring; 217. First limiting groove;

[0027] 3. Fine crushing mechanism; 31. Circular plate; 32. Toothed groove; 33. Pentagonal plate; 34. Fixing rod; 35. Gear; 36. Connecting column; 37. Limiting block; 38. Second limiting groove;

[0028] 4. Adjustment mechanism; 41. Threaded rod; 42. C-shaped plate; 43. Handle; 44. Slide groove. Detailed Implementation

[0029] 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.

[0030] Example 1

[0031] As shown in Figure 1;

[0032] A high-caffeine freeze-dried instant coffee powder making apparatus includes a grinding box 1 and a support leg 11 fixed to the lower surface of the grinding box 1.

[0033] In this implementation scheme: when using single-grinding or single-axis rotary grinding to directly grind the raw materials, large particles are prone to accumulate in the grinding chamber, clogging the material channel, causing a sudden increase in equipment load, and even causing the motor to overload and shut down, requiring frequent production interruptions for cleaning, which seriously affects production efficiency. Furthermore, the single motion mode is prone to uneven contact between the grinding stone and the material, resulting in uneven particle size, which easily leads to clumping during brewing, failing to meet the "instant" quality requirements of instant coffee. In combination, this problem is obviously a real and difficult-to-solve issue. Therefore, to solve this technical problem, a coarse grinding mechanism 2, a fine grinding mechanism 3, and an adjustment mechanism 4 are added to this application.

[0034] Furthermore:

[0035] As shown in Figures 1 to 3:

[0036] In conjunction with the above: a high-caffeine freeze-dried instant coffee powder making apparatus further includes a coarse grinding mechanism 2 disposed on the surface of the grinding box 1;

[0037] The coarse crushing mechanism 2 includes a feeding port 21 and a discharging port 22 on the surface of the grinding box 1. A central shaft 23 is symmetrically rotatably connected to the surface of the grinding box 1. A crushing roller 24 is fixedly connected to the surface of the central shaft 23. A receiving funnel 25 is provided on the lower surface of the crushing roller 24. A first inclined plate 26 is provided on the lower surface of the receiving funnel 25. The receiving funnel 25 and the first inclined plate 26 are fixedly connected to the grinding box 1. A grinding chamber 27 is fixedly connected to the surface of the grinding box 1. The end of the first inclined plate 26 away from the grinding box 1 is fixedly connected to the grinding chamber 27. A second inclined plate 28 is fixedly connected to the end of the grinding chamber 27 away from the first inclined plate 26. A servo motor 29 is installed on the surface of the grinding box 1. A rotating shaft 210 is fixedly connected to the output shaft of the servo motor 29. A first grinding stone 211 is fixedly connected to the end of the rotating shaft 210 away from the servo motor 29.

[0038] In this implementation scheme: the raw material is fed into the feeding port 21 on the surface of the grinding box 1 and falls between the symmetrically arranged crushing rollers 24. The intermediate shaft 23 is driven by an external motor to rotate, which drives the crushing rollers 24 to rotate in opposite directions. The raw material is initially crushed by the action of extrusion and shearing to form fragments with larger particle sizes. The crushed fragments fall into the receiving funnel 25 below by gravity and are guided into the grinding chamber 27 by the first inclined plate 26. At this time, the servo motor 29 drives the rotating shaft 210 to rotate, which in turn drives the first grinding stone 211 to rotate and coarsely grind the crushed raw material in the grinding chamber 27, so that the particle size of the raw material is further reduced. The processed raw material is discharged from the grinding box 1 through the discharge port 22 by the guide of the second inclined plate 28. This design first crushes the whole raw material into fragments and then performs preliminary grinding on the fragments, avoiding large particles from directly entering the grinding chamber 27 and causing equipment wear or blockage, improving processing efficiency and equipment life. The inclined guiding design of the first inclined plate 26 uses gravity to realize the automatic conveying of the fragments without additional power, reducing energy consumption, and at the same time avoiding the accumulation of fragments.

[0039] Furthermore:

[0040] As shown in Figures 2 and 3:

[0041] In an optional embodiment, a sleeve 212 is rotatably connected to the surface of the grinding box 1. The sleeve 212 is fixedly connected to the rotating shaft 210. Five sets of second grinding stones 213 are provided at the end of the sleeve 212 away from the servo motor 29.

[0042] In this embodiment: when the rotating shaft 210 rotates, the five sets of second grinding stones 213 at its end are driven to rotate synchronously through the fixedly connected sleeve 212. The second grinding stones 213 move in a circular motion with the sleeve 212 in the grinding chamber 27 to perform secondary grinding on the coarsely ground coffee particles, further reducing the particle size. The five sets of second grinding stones 213 are evenly distributed at the end of the sleeve 212 to form an annular grinding area, increasing the contact area with the coffee particles and improving grinding efficiency and uniformity.

[0043] Furthermore:

[0044] As shown in Figure 3:

[0045] In an optional embodiment, a first side baffle 214 is symmetrically fixedly connected to the surface of the first inclined plate 26, and a second side baffle 215 is symmetrically fixedly connected to the surface of the second inclined plate 28.

[0046] In this embodiment, the first side baffles 214 on both sides of the first inclined plate 26 and the second side baffles 215 on both sides of the second inclined plate 28 are respectively arranged vertically along the edge of the inclined plate to form a closed material transmission channel. When the broken material slides on the inclined plate, the first side baffles 214 and the second side baffles 215 restrict its lateral movement and prevent the broken material from falling from the edge of the inclined plate. The closed transmission channel reduces the residue of broken material, facilitates regular cleaning, and maintains the hygiene of the device.

[0047] Furthermore:

[0048] As shown in Figure 2:

[0049] In an optional embodiment, a limiting ring 216 is fixedly connected to the surface of the sleeve 212, and a first limiting groove 217 that cooperates with the limiting ring 216 is opened on the surface of the grinding box 1.

[0050] In this embodiment, the limiting ring 216 on the surface of the sleeve 212 cooperates with the first limiting groove 217 on the surface of the grinding box 1 to form an axial limiting structure. When the sleeve 212 rotates with the rotating shaft 210, the limiting ring 216 slides in the first limiting groove 217 to restrict the sleeve 212 from moving along the axial direction of the rotating shaft 210.

[0051] Furthermore:

[0052] As shown in Figure 4:

[0053] In an optional embodiment, a fine crushing mechanism 3 disposed on the surface of the sleeve 212 is also included;

[0054] The fine grinding mechanism 3 includes a circular plate 31 rotatably connected to the inner surface of the sleeve 212. The circular plate 31 is fixedly connected to the grinding box 1. The inner surface of the circular plate 31 is provided with a toothed groove 32. The surface of the servo motor 29 is fixedly connected to a pentagonal plate 33. The surface of the pentagonal plate 33 is rotatably connected to five sets of fixing rods 34. The bottom end of the fixing rods 34 is fixedly connected to the second grinding stone 213. The surface of the fixing rods 34 is fixedly connected to a gear 35 that meshes with the toothed groove 32.

[0055] In this implementation scheme: when the servo motor 29 drives the pentagonal plate 33 to rotate, it drives the five sets of fixed rods 34 to revolve around the rotating shaft 210. Since the circular plate 31 is fixedly connected to the grinding box 1, and the sleeve 212 is rotatably connected to the circular plate 31 and the grinding box 1, and since the gear 35 on the surface of the fixed rod 34 meshes with the tooth groove 32 on the inner surface of the circular plate 31, when the servo motor 29 is working, the fixed rod 34 rotates around its own axis while revolving, thereby driving the second grinding stone 213 at the end to generate a compound motion of revolution and rotation. This motion mode makes the second grinding stone 213 not revolve along the circumferential trajectory in the grinding chamber 27, but also achieve high-speed rotation through its own rotation, forming a dual grinding effect of rolling and high-speed grinding, which can effectively break the edges of the particle surface, reduce the residue of large particles, and make the coffee powder particle size distribution more concentrated, meeting the "fine and easy to dissolve" requirements of instant coffee powder.

[0056] Furthermore:

[0057] As shown in Figure 4:

[0058] In an optional embodiment, a connecting post 36 is fixedly connected to the lower surface of the sleeve 212, a fixing rod 34 rotates on the inner surface of the connecting post 36, a limiting block 37 is fixedly connected to the surface of the fixing rod 34, and a second limiting groove 38 that cooperates with the limiting block 37 is opened on the surface of the connecting post 36.

[0059] In this embodiment: the connecting post 36 on the lower surface of the sleeve 212 provides support for the fixed rod 34. The fixed rod 34 is engaged with the second limiting groove 38 on the surface of the connecting post 36 by the limiting block 37, which restricts the radial movement of the fixed rod 34. When the fixed rod 34 rotates, the limiting block 37 slides in the second limiting groove 38 to ensure that the fixed rod 34 always rotates along the predetermined trajectory, avoids radial displacement caused by centrifugal force, and ensures that the distance between the second grinding stone 213 and the inner wall of the grinding cavity 27 is uniform.

[0060] Furthermore:

[0061] As shown in Figure 5:

[0062] In an optional embodiment, an adjustment mechanism 4 is also provided on the surface of the grinding chamber 1;

[0063] The adjustment mechanism 4 includes a threaded rod 41 threadedly connected to the surface of the grinding box 1. One end of the threaded rod 41 is rotatably connected to a C-shaped plate 42. An intermediate shaft 23 is rotatably connected to the surface of the C-shaped plate 42. A handle 43 is fixedly connected to the end of the threaded rod 41 away from the C-shaped plate 42. The surface of the grinding box 1 is symmetrically provided with sliding grooves 44 that cooperate with the intermediate shaft 23.

[0064] In this implementation scheme: rotating the handle 43 drives the threaded rod 41 to rotate, and the C-shaped plate 42, which cooperates with the threaded rod 41, moves along the axis of the threaded rod 41. Because the threaded rod 41 and the C-shaped plate 42 are rotatably connected, the C-shaped plate 42 cannot rotate, but can only move horizontally. The C-shaped plate 42 drives the intermediate shaft 23 to slide in the slide groove 44, thereby adjusting the distance between the two crushing rollers 24. When the distance is increased, it is suitable for processing harder or larger raw materials. When the distance is decreased, more intense preliminary crushing can be achieved. By manually adjusting the distance between the crushing rollers 24, the device can be adjusted to adapt to different types of raw materials or different process requirements, thus improving the versatility of the device.

[0065] Furthermore:

[0066] As shown in Figure 5:

[0067] In an alternative embodiment, the surface of the handle 43 is engraved with anti-slip texture.

[0068] In this embodiment, the anti-slip texture on the surface of the handle 43 increases the roughness of the contact surface, thereby increasing the friction between the operator's hand and the handle 43. This allows the operator to more accurately control the rotation angle of the handle 43, ensuring that the spacing of the crushing rollers 24 is adjusted to the target value, avoiding repeated adjustments due to slippage, and improving operating efficiency.

[0069] Working principle: Raw materials are fed into the grinding chamber 1 through the feeding port 21 and fall between the two crushing rollers 24. An external motor drives the intermediate shaft 23 to rotate, causing the crushing rollers 24 to rotate in opposite directions. Through compression and shearing, the whole raw material is crushed into larger particles. The crushed material is guided into the grinding chamber 27 through the receiving funnel 25 and the first inclined plate 26. The servo motor 29 drives the rotating shaft 210 to rotate, causing the first grinding stone 211 to rotate in the grinding chamber 27, impacting and rubbing the crushed material to achieve coarse grinding and reduce the particle size. The rotating shaft 210 drives five sets of second grinding stones 213 to rotate synchronously through the sleeve 212. At the same time, the gear 35 on the surface of the fixed rod 34 meshes with the tooth groove 32 of the circular plate 31, forcing the first grinding stone 211 to rotate synchronously. The two grinding stones 213 rotate on their own axis while revolving around the sun, forming a dual grinding effect of rolling and high-speed grinding. This effectively breaks the sharp edges of the particle surface, reduces the residue of large particles, and further refines the coffee powder. The ground material is guided by the second inclined plate 28 and discharged from the outlet 22. During the grinding process, the first side baffle 214 and the second side baffle 215 prevent the material from spilling. The limiting ring 216 and the first limiting groove 217, the limiting block 37 and the second limiting groove 38 ensure the stable rotation of the grinding components. The rotating handle 43 drives the threaded rod 41 to rotate, and the shaped plate 42 drives the intermediate shaft 23 to slide in the sliding groove 44, thereby adjusting the distance between the two grinding rollers 24 to adapt to different raw material hardness or process requirements.

[0070] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-caffeine freeze-dried instant coffee powder making apparatus, comprising a grinding chamber (1) and a support leg (11) fixed to the lower surface of the grinding chamber (1), characterized in that: It also includes a coarse crushing mechanism (2) disposed on the surface of the grinding box (1); the coarse crushing mechanism (2) includes a feeding port (21) and a discharging port (22) opened on the surface of the grinding box (1), a central shaft (23) is symmetrically rotatably connected to the surface of the grinding box (1), a crushing roller (24) is fixedly connected to the surface of the central shaft (23), a receiving funnel (25) is disposed on the lower surface of the crushing roller (24), a first inclined plate (26) is disposed on the lower surface of the receiving funnel (25), and the receiving funnel (25) and the first inclined plate (26) are connected to the grinding box. (1) Fixed connection: A grinding chamber (27) is fixedly connected to the surface of the grinding box (1). The end of the first inclined plate (26) away from the grinding box (1) is fixedly connected to the grinding chamber (27). A second inclined plate (28) is fixedly connected to the end of the grinding chamber (27) away from the first inclined plate (26). A servo motor (29) is installed on the surface of the grinding box (1). A rotating shaft (210) is fixedly connected to the output shaft of the servo motor (29). A first grinding stone (211) is fixedly connected to the end of the rotating shaft (210) away from the servo motor (29).

2. The apparatus for making high-caffeine freeze-dried instant coffee powder according to claim 1, characterized in that: A sleeve (212) is rotatably connected to the surface of the grinding box (1). The sleeve (212) is fixedly connected to the rotating shaft (210). Five sets of second grinding stones (213) are provided at the end of the sleeve (212) away from the servo motor (29).

3. The apparatus for making high-caffeine freeze-dried instant coffee powder according to claim 1, characterized in that: The surface of the first inclined plate (26) is symmetrically fixedly connected with a first side baffle (214), and the surface of the second inclined plate (28) is symmetrically fixedly connected with a second side baffle (215).

4. The apparatus for making high-caffeine freeze-dried instant coffee powder according to claim 2, characterized in that: The surface of the sleeve (212) is fixedly connected to a limiting ring (216), and the surface of the grinding box (1) is provided with a first limiting groove (217) that cooperates with the limiting ring (216).

5. The apparatus for making high-caffeine freeze-dried instant coffee powder according to claim 4, characterized in that: It also includes a fine grinding mechanism (3) disposed on the surface of the sleeve (212); the fine grinding mechanism (3) includes a circular plate (31) rotatably connected to the inner surface of the sleeve (212), the circular plate (31) being fixedly connected to the grinding box (1), the inner surface of the circular plate (31) being provided with a toothed groove (32), the surface of the servo motor (29) being fixedly connected with a pentagonal plate (33), the surface of the pentagonal plate (33) being rotatably connected with five sets of fixing rods (34), the bottom end of the fixing rods (34) being fixedly connected to the second grinding stone (213), and the surface of the fixing rods (34) being fixedly connected with a gear (35) meshing with the toothed groove (32).

6. The apparatus for making high-caffeine freeze-dried instant coffee powder according to claim 5, characterized in that: A connecting post (36) is fixedly connected to the lower surface of the sleeve (212). The fixing rod (34) rotates on the inner surface of the connecting post (36). A limiting block (37) is fixedly connected to the surface of the fixing rod (34). A second limiting groove (38) that cooperates with the limiting block (37) is opened on the surface of the connecting post (36).

7. The apparatus for making high-caffeine freeze-dried instant coffee powder according to claim 6, characterized in that: It also includes an adjustment mechanism (4) disposed on the surface of the grinding box (1); the adjustment mechanism (4) includes a threaded rod (41) threadedly connected to the surface of the grinding box (1), one end of the threaded rod (41) is rotatably connected to a U-shaped plate (42), the surface of the U-shaped plate (42) is rotatably connected to the intermediate shaft (23), the end of the threaded rod (41) away from the U-shaped plate (42) is fixedly connected to a handle (43), and the surface of the grinding box (1) is symmetrically provided with sliding grooves (44) that cooperate with the intermediate shaft (23).

8. The apparatus for making high-caffeine freeze-dried instant coffee powder according to claim 7, characterized in that: The surface of the handle (43) is engraved with anti-slip texture.

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