Bean grinding component with self-cleaning for coffee machine and use method thereof

A bean grinding component with self-cleaning for a coffee machine, comprising:

• a main component (100) which comprises a shell (101), a base (104) and a water tank (106), wherein the base (104) is fixed to the bottom of the shell (101), and the water tank (106) is arranged at one side of the shell (101);
• a grinding component (200) which is arranged in the shell (101) and comprises an inner housing (201), a storage tank (202), a grinding piece (203), a driving piece (205), a water outlet sprinkler (207), a funnel (209) and a filter screen (210), wherein the inner housing (201) is fixed in the shell (101);
• the storage tank (202) is arranged in the inner housing (201);
• the grinding piece (203) is arranged in the storage tank (202);
• the driving piece (205) is arranged in the shell (101);
• the water outlet sprinkler (207) is located above the storage tank (202);
• the funnel (209) is arranged at the bottom of the storage tank (202);
• the filter screen (210) is located in the funnel (209);
• and the water outlet sprinkler (207), the storage tank (202) and the funnel (209) are communicated;
• wherein the grinding piece (203) comprises a conical grinding disk (203a) and a conical grinding center (203b), and a connecting shaft (203c);
• the conical grinding disk (203a) is fixed at the bottom of the storage tank (202);
• the conical grinding center (203b) is located in the conical grinding disk (203a);
• the connecting shaft (203c) is movably connected into the conical grinding center (203b);
• and
• the grinding piece (203) further comprises a fixing sleeve (203i) and a supporting rod (203j);
• the fixing sleeve (203i) is located at the outer side of the connecting shaft (203c);
• and both ends of the supporting rod (203j) are fixed with the fixing sleeve (203i) and the inner wall of the storage tank (202) respectively.