Abstract: A filtrating module has a reservoir and a plurality of nozzles. The reservoir has an inlet opening, an outlet opening, a plurality of partitions, and a plurality of chambers. The chambers are respectively formed between each two adjacent ones of the partitions. Lower parts of the chambers communicate with each other but upper parts of the chambers are isolated from each other. The nozzles are respectively mounted under the inlet opening of the reservoir and in the upper parts of the chambers. Openings of the nozzles face downward and are inclined toward the next chamber, but the nozzle in the last chamber is inclined toward the outlet opening. A filtrating device includes the filtrating modules connected to each other. Therefore, the working fluid can be jetted downward and inclined to the liquid level of the working fluid, and thus contaminants in air can be dissolved in the working fluid.

Abstract: An assistant connector for a tool comprises a connecting member, a transmission member and a positioning sleeve. The connecting member is provided with a first engaging sleeve on one end thereof, an engaging section on the other end thereof and a pivot head extending from the engaging section. The pivot head is inserted in one end of a pivot groove of the transmission member provided with a second engaging sleeve on the other end thereof, for forming a freely rotary relationship. In the periphery of the transmission member are formed with a first and a second annular grooves for engaging with a C-shaped ring, respectively. The positioning sleeve formed with a first and a second annular positioning grooves in the inner surface thereof mounts on the transmission member. Thereby, it can meet the requirements of a straight-pole operational mode and a rotary operational mode, achieving simple and convenient operation.