Technical background and general introduction to hand pump sprayers

[1] this invention relates to apparatus and method for dispensing material. More specifically, the invention relates to a backpack garden sprayers  of apparatus and method for dispensing liquid, also relates to a liquid storage tank is arranged for the allocation of the liquid adhesion force. [2] hand pump sprayers is usually installed in the container household liquids, such as detergent windows and bathroom. Household liquid hand pump pressure sprayer  the manual sprayer to repeated extrusion sprayer leveraged assigned. This may be very tired. Therefore, power sprayer has been spray development to replace the manual operation of the. The former hand pump [3] sprayers has several drawbacks. First of all, they often can not be installed in the existing household liquid in the container by the user, but on a special reservoir. The user may cause confusion and inconvenience. [4] second, head or shell before the hand pump sprayers, than the manual sprayer standard to the bigger and heavier. Therefore, power sprayer before often top-heavy and more cumbersome. They are more home garden sprayer  than not power sprayer to expensive, since at least these reasons, they are not the best selling goods.