A coffee bean grinding system for coffee machine comprising a coffee bean grinding box, a lower grinding blade assembly disposed within the coffee bean grinding box and a gear box, wherein the coffee bean grinding box further comprises a bottom wall, the lower grinding blade assembly further comprises a transmission joint disposed on the bottom wall, and the gear box further comprises an output shaft that is drivingly connected to the transmission joint; the transmission joint is movably connected to the output shaft.

A manual grinder, having a shell, a handle and a grinding assembly, wherein the top of the shell has an opening and a swivelling cover, the swivelling cover is provided with a feed port, the feed port is provided with a closing cover, the closing cover is fixed relative to the shell, the swivelling cover is rotatably connected with the shell, the grind assembly is arranged in the shell, a transmission shaft is arranged in the shell, the upper end of the transmission shaft penetrates the swivelling cover and is connected with the handle, and the lower end of the transmission shaft is penetrated in the grinding assembly. It is simple to open the cover and convenient to put materials, the opening of the cover is not affected by the handle, and the overall structure is simple.

A manual grinder, having a shell, a handle and a grinding assembly, wherein the top of the shell has an opening and a swivelling cover, the swivelling cover is provided with a feed port, the feed port is provided with a closing cover, the closing cover is fixed relative to the shell, the swivelling cover is rotatably connected with the shell, the grind assembly is arranged in the shell, a transmission shaft is arranged in the shell, the upper end of the transmission shaft penetrates the swivelling cover and is connected with the handle, and the lower end of the transmission shaft is penetrated in the grinding assembly. It is simple to open the cover and convenient to put materials, the opening of the cover is not affected by the handle, and the overall structure is simple.

A electronic grinder includes a main body removably attached to a grinding and dispensing chamber. The top of the main body is sealed by an upper cab and the bottom of the chamber is sealed by an openable lower cap. The main chamber includes a motor connected to a magnetically attached removable blade. The blade extends into the chamber when the grinder is assembled. When the lower cap is closed, the blade grinds material placed in the chamber. When the lower cap is opened, the blade functions as a fan to dispense ground material out of the chamber. The grinder also includes a display, an electronic scale, and an accessory cigarette lighter.

An electronic grinder powered by a smartphone has an electronics housing removably attached to a container section. The electronics housing has a motor and a microcontroller powered by a smartphone connected by a universal serial bus connector. The container section is sealed at the top by an openable, swivel-mounted cap. The motor has a blade that extends into the container section. The blade connected to the motor by a magnetic connection and the blade is configured to grind material disposed in the container section when the container section is closed.

An electronic grinder powered by a smartphone has an electronics housing removably attached to a container section. The electronics housing has a motor and a microcontroller powered by a smartphone connected by a universal serial bus connector. The container section is sealed at the top by an openable, swivel-mounted cap. The motor has a blade that extends into the container section. The blade connected to the motor by a magnetic connection and the blade is configured to grind material disposed in the container section when the container section is closed.

A portable manual grinder has a driving section, a grinding section and a discharging section coaxially connected from top to bottom. The driving section has a drive shaft that drives a central axis of the grinding section. The drive shaft is connected to a gear set that increases the gear ratio to facilitate manual grinding. The grinding section comprises an upper grinding section and a lower grinding section that are coaxially disposed and mated together. The upper and lower grinding portions include corresponding blades extending therefrom. The bottom section of the lower grinding section has one or more holes in communication with the discharge section. The driving section and the upper grinding section are magnetically attracted and connected to each other and the upper grinding section and the lower grinding section are magnetically attracted and connected to each other.

A portable manual grinder has a driving section, a grinding section and a discharging section coaxially connected from top to bottom. The driving section has a drive shaft that drives a central axis of the grinding section. The drive shaft is connected to a gear set that increases the gear ratio to facilitate manual grinding. The grinding section comprises an upper grinding section and a lower grinding section that are coaxially disposed and mated together. The upper and lower grinding portions include corresponding blades extending therefrom. The bottom section of the lower grinding section has one or more holes in communication with the discharge section. The driving section and the upper grinding section are magnetically attracted and connected to each other and the upper grinding section and the lower grinding section are magnetically attracted and connected to each other.

A grinding device includes a grinding mechanism, a driving mechanism capable of driving the grinding mechanism to operate, and a grinding seat located between the grinding mechanism and the driving mechanism. The grinding mechanism includes a rotating shaft unit inserted in and protruded from the grinding seat to be rotatably connected to the driving mechanism, an inner grinding unit sleeved on the rotating shaft unit, and an outer grinding unit surrounding and spaced from the inner grinding unit. The driving mechanism is able to drive the rotating shaft unit to bring the inner grinding unit to rotate and grind the substance to be ground in cooperation with the outer grinding unit. The grinding mechanism further includes a supporting unit sleeved on and abutted against the rotating shaft unit.

A grinding device includes a grinding mechanism, a driving mechanism capable of driving the grinding mechanism to operate, and a grinding seat located between the grinding mechanism and the driving mechanism. The grinding mechanism includes a rotating shaft unit inserted in and protruded from the grinding seat to be rotatably connected to the driving mechanism, an inner grinding unit sleeved on the rotating shaft unit, and an outer grinding unit surrounding and spaced from the inner grinding unit. The driving mechanism is able to drive the rotating shaft unit to bring the inner grinding unit to rotate and grind the substance to be ground in cooperation with the outer grinding unit. The grinding mechanism further includes a supporting unit sleeved on and abutted against the rotating shaft unit.