Pump body structure and foam pump
AssigneeFoshan Changtuo Packaging Technology Co., Ltd.
InventorsJianwen Zou, Wenqiang Yang
Life of this patent
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Abstract
A pump body structure includes: an air inlet cylinder, an air inlet cavity being arranged inside the air inlet cylinder, and an air return hole being arranged in a bottom portion of the air inlet cylinder; a liquid inlet cylinder connected to the bottom portion of the air inlet cylinder; a lower cover connected to the bottom portion of the air inlet cylinder, a cavity being defined by the lower cover, an outer side wall of the liquid inlet cylinder and a bottom wall of the air inlet cylinder, and an air return channel being reserved between the lower cover and the liquid inlet cylinder; and an elastic stop valve arranged in the cavity, the elastic stop valve being configured for elastically covering a bottom portion of the air return hole.
Claims10
A pump body structure, comprising:
- an air inlet cylinder, wherein an air inlet cavity is arranged inside the air inlet cylinder, and an air return hole communicating the air inlet cavity with a space below the air inlet cylinder is arranged in a bottom portion of the air inlet cylinder;
- a liquid inlet cylinder connected to the bottom portion of the air inlet cylinder;
- a lower cover connected to the bottom portion of the air inlet cylinder, wherein a cavity is defined by the lower cover, an outer side wall of the liquid inlet cylinder and a bottom wall of the air inlet cylinder, and an air return channel communicating the cavity with a space below the lower cover is reserved between the lower cover and the liquid inlet cylinder;
- and
- an elastic stop valve arranged in the cavity, wherein the elastic stop valve is configured for elastically covering a bottom portion of the air return hole.
Dependencies are inferred from the claim text.