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Rupture Diaphragm for Magnetic Media Ink Pumps

IP.com Disclosure Number: IPCOM000086193D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 56K

Publishing Venue

IBM

Related People

Fletcher, AT: AUTHOR

Abstract

The device as depicted schematically shows a modified relief valve for a rotary pump. A modified set screw having a piercing point is positioned concentric with valve port 10. The modified relief valve body is then mounted to manifold block 12 with standard bolts. Rupture diaphragm gasket 14 is positioned between the relief valve body and the manifold block.

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Rupture Diaphragm for Magnetic Media Ink Pumps

The device as depicted schematically shows a modified relief valve for a rotary pump. A modified set screw having a piercing point is positioned concentric with valve port 10. The modified relief valve body is then mounted to manifold block 12 with standard bolts. Rupture diaphragm gasket 14 is positioned between the relief valve body and the manifold block.

To test the burst pressure of the rupture diaphragm 14, pressure is applied with a hydraulic pump until gauge 16 indicates desired burst pressure. The set screw is then torqued in until its point pierces the diaphragm and the diaphragm bursts. The set screw is then locked in place. The diaphragm 14 is replaced with a new one and without altering the set screw adjustment, the test is repeated to check burst pressure again.

If the burst pressure of the diaphragm 14 is already known, then the pressure testing need not be undertaken and the diaphragm will be positioned as shown with the modified set screw positioned so as not to rupture the diaphragm. The valve body and diaphragm 14 may then be placed on the ink pump.

With the arrangement shown in the drawing, the diaphragm 14 can be tailored to suit the required relief pressure. No gradual leakage takes place, thus the relief system is not rendered ineffective with dried up ink. If and when the diaphragm 14 does rupture, there is an immediate loss of pressure on the gauge alerting an operator that the diaphragm need...