Extraction pond subassembly and cap subassembly, cap body and cap male part

The utility model provides an extraction pond subassembly, should extract the pond subassembly and include: the cell body, cap subassembly, this cap subassembly have the cap body and cap male part, substrate support piece and sealing member. This cell body can be fixed and including through -hole and outer leg with removing to this cap integument. This cap male part includes the plunger, follows the outside peripheral flange that extends of this plunger and set up caving in in this plunger. The flange and the plunger of this cap male part are received in the outer leg and through -hole of this cap body on slidable ground respectively. This substrate support piece can receive in this is sunken with removing. This sealing member can be received in this through -hole with removing. When this cap subassembly was fixed this cell body, this sealing member formed fluid tight between this cell body and this cap subassembly. A method of using this extraction pond subassembly is still disclosed.