| 摘要 |
This invention relates to an anti-siphon blowing balloon for removing dust from surfaces. The balloon comprises a sphere 1 and a bubble tube 2, The front of sphere 1 is equipped with an air vent 11 while the back is equipped with a one-way air inlet valve 12. The bubble tube 2 is equipped with air blown through-hole 21, and the back end of the bubble tube 2 joins coordinate with the air vent 11 of the sphere 1. Inside the bubble tube 2 is set with a one-way air control valve, The one-way air control valve includes cylindrical cavity (22, fig 2), which set in the bubble tube 2 and with a diameter that bigger than air blown through-hole 21, and a valve plate (23, fig 2), which set in the cylindrical cavity (22, fig 2) and with a diameter that bigger than air blown through-hole 21 and less than the diameter of cylindrical cavity (22, fig 2). The valve plate (23, fig 2) is able to follow the cylindrical cavity (22, fig 2) with an axial movement. The back end of valve plate (23, fig 2) coordinates gas-tight when the sphere is squeezed and compressed with the air blown through-hole 21 in the back end of cylindrical cavity (22, fig 2), while the front end of the valve plate 23 coordinates ventilated with the air blown through-hole 21 in the front end of cylindrical cavity 22. After finishing blowing, once the sphere is released, the sphere 1 will inhale fresh air from the one-way valve 12, so that it is able to avoid the second contamination of the cleaning stuffs, and prolong the life-span of the blowing balloon. |
