Rotational speed regulating system of bean grinding device

Abstract

The invention relates to the technical field of bean grinding machines, in particular to a rotational speed regulating system of a bean grinding device. The bean grinding device comprises a grinding wheel group, a gear plate and a motor, the motor drives the grinding wheel group to rotate to grind beans, the gear plate is used for regulating the grinding wheel group to switch between a coarse gearand a fine gear of bean grinding, the regulating system comprises a regulating gear, a potentiometer and a controller, the regulating gear is meshed with the gear plate and is in transmission cooperation with the potentiometer, the potentiometer is connected to the output end of the controller, and the output end of the controller is connected to the control end of the motor. The rotational speedregulating system can automatically regulate the rotational speed of the motor according to grinding gears, the powder discharge amount during coarse powder grinding is relatively low, the powder discharge amount during fine powder grinding is relatively high, and meanwhile, the problems can be avoided that the motor is easily damaged due to too large load, and the grinding device is blocked during rotation.

Description

technical field [0001] The invention relates to the technical field of bean grinders, in particular to a rotational speed adjustment system of a bean grinder. Background technique [0002] At present, the coffee machines developed by the industry for ordinary people to grind coffee beans into powder and boil and brew them in a drip style are quite diverse in group form. When grinding the powder, you can make different choices according to your favorite grinding thickness, and then proceed to the next step to brew the coffee powder in a drip-style by boiling hot water. If consumers want to choose different grinding thicknesses, they have to choose coffee machines with different group shapes, which is very inconvenient. Therefore, the Chinese Patent Publication No. CN2717348 proposes a fully automatic coffee machine, which provides a coffee machine equipped with a power motor and a speed change gear set to adjust the thickness of the coffee bean grinding powder, through the s...

AI Technical Summary

Problems solved by technology

In the above-mentioned milling device, since the rotational speed of the motor is constant, the load on the motor is relatively large when grinding fine powder, which makes the motor easy to be damaged, and there is a hidden danger of stalling in the milling device, and the powder output is small at the same time; When grinding coarse powder, the machine load is small and the powder output is large

In this solution, the powder output of the milling device will vary with the grinding gear, and the powder output per unit time cannot match the coffee machine’s demand for coffee powder. At the same time, the motor is easily damaged, and the grinding The problem that the device is easy to stall

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