CLOSING VALVE Russian patent published in 2021 - IPC F16K49/00 F16K11/10 

FIELD: closing pipe reinforcement.

SUBSTANCE: invention relates to closing pipe reinforcement; it can be widely used in complex cleaning units, where the regeneration mode includes the processes of high-temperature heating and vacuuming. The closing valve is made in the form of a cylinder, connected to the drive through a rod. A seal and three chambers are placed in the cylinder. The first and third chambers are cylindrical, and the second is annular. The first chamber is located above the seal, while it is connected to the second and third chambers by means of axial channels made in the cylinder. Radial channels are made along the perimeter of each chamber. In addition, the closing valve is equipped with an additional chamber located on the side opposite to the cover relatively to the case and having an inlet pipe, a spring-loaded valve for supplying cooling medium and a seal for a hollow rod connected to the third chamber and interacting with the valve for supplying cooling medium. Besides, the outer surface of the cylinder, the hollow rod and the inner surface of the additional chamber facing the third chamber are thermally insulated.

EFFECT: invention makes it possible to create a closing valve design in which the valve seal is reliably protected from the temperature effects of the working medium used in the regeneration process.

1 cl, 1 dwg