Coffee brewing system and coffee machine

A coffee brewing system, comprising:

• a body,
• a brewing head assembly,
• a brewing cavity assembly, and
• a driving device,
• wherein the body has an inner cavity, and the brewing head assembly is fixed at one end of the inner cavity,
• wherein the brewing cavity assembly comprises a brewing cavity and a powder pusher assembly,
• wherein the brewing cavity is movably arranged in the inner cavity and is in transmission connection with the driving device, and two opposite ends of the brewing cavity are respectively provided with a first opening and a second opening connected with the interior of the brewing cavity, wherein the first opening is opposite to the brewing head assembly, and the top of the brewing cavity is provided with a first powder receiving port connected with the brewing cavity,
• wherein the powder pusher assembly has one end extending into the brewing cavity from the second opening, and the other end extending out of the brewing cavity and connected to the body, wherein the powder pusher assembly and the body may be locked to or unlocked from each other,
• wherein along the moving direction, the brewing cavity in the inner cavity is provided with a first position for discharging coffee residue, a second position for receiving powder, and a third position for brewing coffee,
• wherein in the first position, one end of the powder pusher assembly is adjacent to the first opening, in the second position, the brewing head assembly is adjacent to the first opening, and in the third position, the brewing head assembly extends into the brewing cavity and is adjacent to the powder pusher assembly;
• wherein the top of the body is provided with a second powder receiving port connected with the inner cavity, and a powder blocking plate;
• wherein a third powder receiving port is formed in the powder blocking plate;
• wherein when the brewing cavity moves, the powder blocking plate moves along with the brewing cavity;
• and wherein when the brewing cavity moves to the second position, the third powder receiving port is opposite to the second powder receiving port and the first powder receiving port.