| 摘要 |
<p>Disclosed are a storage container with a gas extraction device and a container cover of the storage container, wherein a cylinder body (3) of the container cover is directly provided with a gas extraction device comprising a gas extraction cylinder (4), a piston ring (5) and a spring (6). The piston ring is mounted in an annular gutter (7) of the gas extraction cylinder and is connected to the cylinder wall of the cylinder body, the height of the annular gutter being larger than the thickness of the piston ring, and the outer wall of the gas extraction cylinder is provided with an exhaust groove (8) in communication with the annular gutter through a notch (9). The lower end of the cylinder body is provided with an inner cylinder (10), and the spring is fitted over the outer side of the inner cylinder and upwardly supports same, and is connected to a cylinder cover (12) of the gas extraction cylinder. A gas extraction chamber (11) is formed by the enclosing of the inner cylinder (10), the gas extraction cylinder (4) and the cylinder body (3) of the container cover; when the gas extraction cylinder (4) is moved upward, the piston ring is located at the lower side of the annular gutter to seal off the gas extraction chamber, and gas in the container enters the gas extraction chamber (11) through a gas outlet hole (13) and a check valve (14) to form a gas extraction structure; and when the gas extraction cylinder (4) is moved downward, the piston ring is located at the upper side of the annular gutter, the gas outlet hole is closed by the check valve, and the gas in the gas extraction chamber is in communication with the notch (9) and the exhaust groove (8) through the annular gutter (7) to form a gas exhaust structure. The present invention has the advantages of reducing the force needed for extracting gas, having a good gas extraction effect, being convenient to use, and having a good sealing effect.</p> |
