Lid structure configured for easy disassembly and cleaning

1. A lid structure configured for easy disassembly and cleaning, comprising:

a lid having a bottom side provided with an opening, the lid being concavely provided with an assembly space corresponding in position to the opening, the lid having an inner wall which corresponds in position to the opening and is protrudingly provided with a first threaded connection portion extending toward the opening, the first threaded connection portion having an inner periphery provided with threads;

a gasket fitted around an outer periphery of the first threaded connection portion and protrudingly provided with a pulling tab, the pulling tab extending toward the opening, wherein when the lid is assembled to an opening on a top side of a container, the gasket is pressed between the lid and the container; and

a filter comprising a hollow frame and at least one filter screen, the hollow frame having a middle section peripherally formed with at least one hole, the hollow frame having a top side provided with a second threaded connection portion, the second threaded connection portion having an outer periphery provided with threads, wherein the threads on the outer periphery of the second threaded connection portion are threadedly engageable with the threads on the inner periphery of the first threaded connection portion so that the second threaded connection portion and the first threaded connection portion are connected together in the assembly space to fix the top side of the filter in the lid while a bottom side of the filter is exposed outside the opening of the lid, the at least one filter screen coating the at least one hole and a bottom through hole of the hollow frame such that a receiving space is formed in the hollow frame.

2. The lid structure of claim 1 , wherein the pulling tab extends by a length greater than a height of the first threaded connection portion.

3. The lid structure of claim 2 , wherein the pulling tab extends slantingly toward a central axis of the lid.

4. The lid structure of claim 3 , wherein the hollow frame has a bottom side protrudingly provided with a plurality of legs.

5. A lid structure configured for easy disassembly and cleaning, comprising:

a lid having a bottom side provided with an opening, the lid being concavely provided with an assembly space corresponding in position to the opening, the lid having an inner wall which corresponds in position to the opening and is protrudingly provided with a first threaded connection portion extending toward the opening, the first threaded connection portion having an outer periphery provided with threads;

a filter comprising a hollow frame and at least one filter screen, the hollow frame having a middle section peripherally formed with at least one hole, the hollow frame having a top side provided with a second threaded connection portion, the second threaded connection portion having an inner periphery provided with threads, wherein the threads on the inner periphery of the second threaded connection portion are threadedly engageable with the threads on the outer periphery of the first threaded connection portion so that the second threaded connection portion and the first threaded connection portion are connected together in the assembly space to fix the top side of the filter in the lid while a bottom side of the filter is exposed outside the opening of the lid, the at least one filter screen coating the at least one hole and a bottom through hole of the hollow frame such that a receiving space is formed in the hollow frame; and

a gasket fitted around an outer periphery of the second threaded connection portion so that, when the filter is assembled to the lid and the lid is assembled to an opening on a top side of a container, the gasket is pressed between the lid and the container.

6. The lid structure of claim 5 , wherein the gasket is protrudingly provided with a pulling tab extending toward the opening of the lid.

7. The lid structure of claim 6 , wherein the pulling tab extends slantingly toward a central axis of the lid.

8. The lid structure of claim 7 , wherein the hollow frame has a bottom side protrudingly provided with a plurality of legs.

9. A lid structure configured for easy disassembly and cleaning, comprising:

a lid having a bottom side provided with an opening, the lid being concavely provided with an assembly space corresponding in position to the opening, the lid having an inner wall which corresponds in position to the opening and is protrudingly provided with a first threaded connection portion extending toward the opening, the first threaded connection portion having an outer periphery provided with threads;

a filter comprising a hollow frame and at least one filter screen, the hollow frame having a middle section peripherally formed with at least one hole, the hollow frame having a top side provided with a second threaded connection portion, the second threaded connection portion having an inner periphery provided with threads, wherein the threads on the inner periphery of the second threaded connection portion are threadedly engageable with the threads on the outer periphery of the first threaded connection portion so that the second threaded connection portion and the first threaded connection portion are connected together in the assembly space to fix the top side of the filter in the lid while a bottom side of the filter is exposed outside the opening of the lid, the at least one filter screen coating the at least one hole and a bottom through hole of the hollow frame such that a receiving space is formed in the hollow frame; and

a gasket fitted around the outer periphery of the first threaded connection portion and protrudingly provided with a pulling tab, the pulling tab extending toward the opening, wherein when the lid is assembled to an opening on a top side of a container, the gasket is pressed between the lid and the container.

10. The lid structure of claim 9 , wherein the pulling tab extends by a length greater than a height of the first threaded connection portion.