| 摘要 |
<p>An improved agitator assembly for sanitary tanks includes a drive shaft extending through a tubular housing. A slide coupling is connected between the outer end of the drive shaft and a drive motor. An impeller is secured to the other end of the drive shaft which is supported on a bearing/seal member in the inner end of the shaft housing. The adjoining surfaces of the bearing/seal member and impeller base are normally engaged in rotary sealing relationship by springs but shift apart responsive to introduction of cleaning solution into the housing so that the cleaning solution is discharged into the tank at the base of the impeller after washing the seals to facilitate cleaning without manual disassembly or scrubbing.</p> |
