| 摘要 |
An ejector, wherein the tip part of an outer insert tube body (7) is fixed onto the base part of an inner insert tube body (6) by the engagement of an inner threaded part (13) with an outer threaded part (10), a pressurized air led from a fluid inlet (14) is guided from the tip part of the outer insert tube body (7) to the base part as shown by the arrow in Fig. 1, and a negative pressure for sucking a force-fed matter is allowed to be generated at a flow inlet (8) of the inner insert tube body (6), whereby the force-fed matter is sucked from the flow inlet (8) of the inner insert tube body (6) and force-fed together with pressurized air from the inner insert tube body (6) to the outer insert tube body (7) as shown by the arrow in Fig. 1 to be moved through the tube into a force-feed hose (2) as a force-feed line, and the engaged position of the outer threaded part (10) of the outer insert tube body (7) relative to the inner threaded part (13) of the inner insert tube body (6) can be adjusted by rotatingly adjusting a handlepart (11) of the inner insert tube body (6) in a circumferential direction so as to adjust a gap G2 between a first tapered part (16) of the outer insert tube body (7) and a low outlet (9) of the inner insert tube body (6).
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