×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Pump Drive Shaft Binding

Pump Drive Shaft Binding

Pump Drive Shaft Binding

(OP)
I currently have an issue with a centrifugal sump pump with a ~13 ft vertical drive shaft. The pump is used to move water and plastic pellets (3mm in D) up approximately 40 ft into a filtering system. The past repair/replacement of this pump has been every 8 months. The problem generally is that the pellets get into the drive shaft and cause it to bind(high amps) and trip out. The last time this pump was taken out of service there was over 5 ft of pellets along the shaft. Water is currently used to cool the bearings but these inlets have filters, the last repair we made we ensured the filters were all sealed.  I cannot see how else the pellets would enter the system. And I cannot see them entering past the seals etc. Any ideas?

Thanks!

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources