Coffee grinder

Abstract

The invention discloses a coffee grinder, which comprises a coffee bean feeding hopper, a grinder main body arranged below the coffee bean feeding hopper, a sliding bearing and a bottom fine-tuning mechanism. A grinding chamber is arranged in the grinder main body, and a grinding motor is arranged below the grinding chamber. A movable grinding stone and a fixed grinding stone are arranged in the grinding chamber. The fixed grinding stone is fixedly arranged at the inner top end of the grinding chamber. The grinding motor comprises an output shaft and a radial bearing fixedly connected with the output shaft. The sliding bearing is fixed below the grinding chamber and sleeved on the radial bearing. The radial bearing slides in the sliding bearing. The bottom fine-tuning mechanism is connected with the lower end of the output shaft of the grinding motor. The coffee grinder is characterized by simple design, low cost and convenient production; fine-tuning precision is high, and the coffee grinder is not required to be reset for grinding. The coffee grinder shows the new concept of cleaning and maintaining bean grinder and more effectively using coffee beans and does not require a step of re-alignment after cleaning.

Description

technical field [0001] The invention relates to a food grinder, in particular to a coffee grinder. Background technique [0002] Existing coffee grinders mostly use two grinding methods to grind coffee beans into powder. One is to use a pair of identical flat grindstones with radial grooves for grinding, and the other is to use a tapered grindstone system, which is ground by a pair of grindstones with different calibers. In the two methods, a moving grindstone in the grinding stone group is driven by an electric motor to rotate around the z-axis (up and down direction), and the other fixed grinding stone with a certain gap between it and the moving plate is fixed. Whole coffee beans usually enter from the center of the fixed block, and coffee powder comes out from the gap between the grinding stone groups. Therefore, the fixed grindstone is defined as the "front" grindstone (through which coffee beans enter the grinding chamber), and the movable grindstone is defined as th...

AI Technical Summary

Problems solved by technology

[0006] Cons: Fewer options for grind settings, stop pins must be in pockets or slots on specific setting dials, and users sometimes want grind settings between two fixed positions

[0008] Disadvantages: The structure of the grinding machine is complicated, there are many parts, the precision of the processing technology is high, and the grinding efficiency is reduced

[0009] 2. Maintenance hassle and coffee wasted

Re-adjustment is required after each cleaning step to get the correct stone clearance, this step is time consuming, should only be done by specially trained personnel, and wastes coffee

[0011] 3. easily contaminated coffee

[0012] Another disadvantage of the fine-tuning system in the prior art is that the thread fine-tuning is located in the grinding chamber, and the movement of the fine-tuning should be very precise, and there is no gap between the two thread surfaces, because the thread mating surface is required to be tight enough (beneficial to the precision of grinding) , the thread working part produces a lot of metal dust that falls into the grinding chamber and mixes with the coffee powder

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