Patent ID: 11965609
Assignee: KAMTEC INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 14:
15. A valve module for selectively opening and closing the outlet according to linear motion of a stem of a valve in an outlet of a valve housing, comprising:
a support provided at an end of the stem;
a shielding part provided to relatively move with respect to the support and the stem, provided to be moved by a pressure of air applied to the valve module, and closing the outlet by receiving a pressure of backflow air when backflow applied to the valve module is generated; and
an elastic part provided between the shielding part and the support,
wherein the shielding part is lowered according to a larger air pressure than elastic force of the elastic part, applied from an upper part of the shielding part, and is raised according to a pressure of backflow air applied from a lower part of the shielding part,
wherein the shielding part includes an outer shielding part that selectively comes in contact with an edge of the outlet and performs a sealing function,
wherein the stem passes through a center of the outer shielding part,
wherein a stem sealing member that is in contact with an outer circumference of the stem and performs the sealing function is provided on the outer shielding part,
wherein the shielding part further includes an inner shielding part disposed inside the outer shielding part,
wherein the inner shielding part includes an inner flange member including a guide hole formed therein, into which another end of the stem sealing member is inserted, and a cylindrical member bent from an corner of the inner flange member.