CPC F16K 15/147 (2013.01) | 20 Claims |
1. An anti-overflow pipe, characterized by comprising:
a pipe wall and a valve;
on a plane perpendicular to lengthwise direction of the pipe wall, a cross-section of an inner side wall of the pipe wall is an elliptical shape, a cross-section of an outer side wall of the pipe wall has a closed elliptical shape; in a plane where a major axis of the elliptical shape of the inner side wall and lengthwise direction of the pipe wall are located, a cross-section of the valve is a V-shaped structure and the valve is connected with the inner side wall, the valve is provided with a slit for unidirectionally conducting fluid; and
on a plane perpendicular to lengthwise direction of the pipe wall, a cross-section of the outer side wall of the pipe wall is an elliptical shape, the oval origin of the cross-section of the outer side wall coincides with the oval origin of the cross-section of the inner side wall, wherein, said oval origin refers to an intersection of the major axis with the minor axis of the elliptical shape; along a curve direction of the elliptical shape of the inner side wall, a wall thickness of the pipe wall gradually decreases from an end of a minor axis of the elliptical shape to an end of the major axis of the elliptical shape.
|