초록 ▼

A method and apparatus for pressure testing containers in peripheral cells in a rotating turret is disclosed in which high pressure air in tested containers is initially discharged into a low pressure reservoir down to a predetermined low pressure and the residual air at the low pressure then discha

A method and apparatus for pressure testing containers in peripheral cells in a rotating turret is disclosed in which high pressure air in tested containers is initially discharged into a low pressure reservoir down to a predetermined low pressure and the residual air at the low pressure then discharged to the atmosphere with little sound generation. Incoming containers to the testing apparatus are initially supplied with pressurized air at a low pressure from the low pressure air reservoir and then supplied with pressurized air from a high pressure air supply, preferably a high pressure air reservoir, to achieve the desired test pressure. The low pressure reservoir and the high pressure reservoir are incorporated in the rotating turret structure and are in communication with a closure cap for each cell by distribution means including a double-acting valve during selected portions of rotation of the turret.

대표청구항 ▼

An apparatus for pressure testing containers comprising, in combination, a turret rotatable about a support shaft having a plurality of test cells parallel to the axis of the turret about the periphery thereof, each cell having an open end facing in the same direction; means for rotating the turret;

An apparatus for pressure testing containers comprising, in combination, a turret rotatable about a support shaft having a plurality of test cells parallel to the axis of the turret about the periphery thereof, each cell having an open end facing in the same direction; means for rotating the turret; means for sequentially feeding containers with their open ends facing outwardly to said cells as the turret rotates; means for closing said cells after admission of containers, said closure means having sealing means for concurrently abutting and sealing the open end of each cell and its container and isolating the interior of the container from the cell, and having means for introducing air under pressure into the container; means for actuating said closure means; a high pressure air supply; a low pressure air reservoir; distribution means communicating the high pressure air supply and the low pressure air reservoir with the closure means pressurized air introducing means; and valving means operatively connected to said distribution means for initially introducing air under pressure from the low pressure reservoir and subsequently from the high pressure supply to the containers and, upon completion of testing, discharging air under pressure from the containers to the low pressure reservoir down to a predetermined low pressure and subsequently exhausting residual air at low pressure to the atmosphere during selected portions of rotation of the turret prior to discharge of the containers from the cells.