| 摘要 |
PURPOSE:To permit a portable sprayer which is normally used in vertical position to be used in the reversed position by adding a double cylinder having two internal ball valves. CONSTITUTION:A portable sprayer normally used in vertical position consists of a container 1, reciprocating pump 2, and spray head 3, whereby the reciprocating pump 2 is detachabley fixed to the container's 1 mouth part. To the lower end of the reciprocating pump 2, a double cylinder 4 whose inner and outer cylinders 41 and 42 are sealed watertight is mounted. Inside this double cylinder 4, liquid passages A and B are formed such that the former A going from the upper to lower ends and the latter B from the lower end to the lower end of the pump. These passages are formed by combination of relative shapes of the inner and outer cylinders. Moreover, between both liquid passages A and B, an air suction preventive valve consisting of a ball valve 42g which closes at the normal vertical position and a taper valve 42d is installed in the passage A, and an air suction preventive valve consisting of a ball valve 42h which closes at the upside down position and a taper valve 42e is installed in the passage B. |
