发明名称 |
Fluid-sealed shaft seal with bores for supplying and discharging fluid |
摘要 |
A fluid sealed shaft seal has a radial sealing gap formed between radial surfaces of a first seal ring rotating with a shaft, and a second stationary seal ring biased toward the first ring and connected over a packing element to a housing. The stationary seal ring carries at least one sealing fluid supply bore and at least one sealing fluid discharge bore for supplying and discharging sealing fluid to and from the gap, to maintain a gap width. Spiral grooves are provided radially outwardly or radially inwardly of the supply and discharge bores for supplying an auxiliary sealing fluid to establish a high pressure annular area to prevent escape of the sealing fluid from the gap.
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申请公布号 |
US4523764(A) |
申请公布日期 |
1985.06.18 |
申请号 |
US19830506345 |
申请日期 |
1983.06.21 |
申请人 |
M.A.N. MASCHINENFABRIK AUGSBURG-NUERNBERG AKTIENGESELLSCHAFT |
发明人 |
ALBERS, ROLF;ASCHENBRUCK, EMIL;NEUHAUS, GUENTER;KOTZUR, JOACHIM |
分类号 |
F16J15/34;F16J15/40;(IPC1-7):F16J15/38;F16J15/48 |
主分类号 |
F16J15/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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