Anti-pollution bottle cap

An anti-pollution bottle cap, wherein

• the anti-pollution bottle cap comprises a cap body, a liquid drainage one-way valve and an air intake one-way valve;
• a liquid drainage hole and an air intake hole are disposed in the cap body and both communicated with an inside of the cap body;
• the liquid drainage one-way is disposed in a space enclosed by the cap body, and the liquid drainage hole is blocked by the liquid drainage one-way valve in one way so as to be opened during toppling operation;
• and
• the air intake one-way valve is disposed in the space enclosed by the cap body, and the air intake hole is blocked by the air intake one-way valve so as to be closed during toppling operation,
• wherein a liquid drainage cavity and an air intake cavity are disposed in the cap body, the liquid drainage cavity is communicated with the liquid drainage hole, and the air intake cavity is communicated with the air intake hole;
• the anti-pollution bottle cap further comprises a support, and the support comprises a liquid drainage frame body and an air intake frame body;
• the liquid drainage frame body is embedded into the liquid drainage cavity in an enclosing and blocking mode, the liquid drainage frame body is provided with a liquid guide hole, and the liquid guide hole is communicated with the liquid drainage cavity and closed by the liquid drainage one-way valve in one way;
• and
• the air intake frame body is embedded into the air intake cavity in an enclosing and blocking mode, the air intake frame body is provided with an air guide hole, and the air guide hole is communicated with the air intake cavity and closed by the air intake one-way valve in one way;
• wherein the liquid drainage one-way valve comprises a liquid drainage blocking core and a flexible rubber separation blade;
• one end of the liquid drainage blocking core abuts against an inner top wall of the cap body, the other end of the liquid drainage blocking core penetrates into the liquid guide hole, and a diameter of the liquid drainage blocking core is smaller than a hole diameter of the liquid guide hole;
• and
• the flexible rubber separation blade is disposed in the liquid drainage cavity, the flexible rubber separation blade is disposed around the liquid drainage blocking core in a circumferential direction by a circle, the flexible rubber separation blade extends out of a circumferential direction of the liquid guide hole so as to block communication between the liquid guide hole and the liquid drainage hole, and the flexible rubber separation blade is bent under pressure for communicating the liquid guide hole with the liquid drainage hole,
• wherein the air intake one-way valve comprises a guide column and a sealing cover and the guide column and the sealing cover are connected with each other;
• a diameter of the guide column is smaller than a hole diameter of the air guide hole, the guide column penetrates through the air guide hole, stop blocks are disposed at portions, in the air intake cavity of, the guide column, the stop blocks extend towards the outside of a circumferential direction of the air guide hole, and the stop blocks are configured to abut against the air intake frame body to prevent the air intake one-way valve from separating;
• and
• the sealing cover is disposed outside the air intake cavity, the sealing cover is separated from the air intake frame body, and the sealing cover can be stressed and deformed in toppling operation so as to close the air guide hole.