The Role of Coupling Rods for Progressive Cavity PumpsJuly 25, 2018
There's a prime mover on the floor, bolted to a concrete plinth. Further down the line, a progressive cavity pump is ready for its first day of work. Moving between those two key drive sections, there's the coupling rod. This is the bridging or connecting component that hooks the prime mover to the pump mechanism. Starting at the drive shaft, let's see where the powertrain takes the rotating energy.
Deconstructing the Powertrain
That prime mover is probably a powerful electric motor, a machine that's designed to rotate slowly while it delivers massive quantities of torque. It's connected to a retainer sleeve, which in turn connects to a rubber sheath. Further down the train of rotating parts, we arrive at the coupling rod. It doesn't look exactly special, but it has an important role to play in this linearly configured pump architecture. Essentially, this is the key power transmission joint. In review, energy is generated by the electric motor, torque is transmitted to the rotor of the progressive cavity pump, and it's the coupling rod that bridges the two primary drive sections.
It's Never the Weakest Link
Numerous windings and magnetic poles provide the prime mover with pure drive muscle. At the other end, a rugged elastomer is working in concert with a double-chrome plated rotor to pump an abrasive stream of fluid. They're entirely reliable equipment stages. What we don't want here is a chink in the armour, a weak link in the chain, or any other metaphorically described system shortcoming. In theory, coupling rods would be the likeliest failure zone in the equipment line. In practice, however, a stainless steel backbone ensures the connecting rod is at least as strong as any other mechanical part. Covered in grease and sealed with a chromium-strengthened finish, the interconnecting drive rod won't fail.
Coupling Rod Geometry
Let's say the short drive part is manufactured from 316 stainless steel. That's all well and good, but what's happening at the two terminating ends? It's here that the hardened bushings are locked against two anchoring sleeves. Densely fabricated coupling pins drop through the aligned holes. They're key-fitted or hammered into place until a physical connection is absolutely established. Then, like any other part of the progressive cavity pump's working parts, it can be removed for maintenance. By the way, remember to lubricate this pivotal drive component when the machinery enters a scheduled maintenance phase.
The role of a coupling rod in a progressive cavity pump is basically to perform as the gear's key mechanical linkage. It's a fairly featureless rod of stainless steel, apart from the dual bushings, and it's as much part of the equipment maintenance program as the rotor, motor, or stator.
Contact Alpha Pumps:
Phone: (03) 9311 7188
Fax: (03) 9364 9554
Mobile: 0403 030 830
Optimized by NetwizardSEO.com.au
- Pump Reconditioning Process and How It Can Save You Money
- Effects of Worn Rotors in Sewage and Sludge Pumps
- Life Expectancy of Pump Rotors
- What is Pump Cavitation and Its Common Causes?
- The Role of Coupling Rods for Progressive Cavity Pumps
- Pump Reconditioning Services in Melbourne: Cost-Efficiency Benefits
- What Makes Progressive Cavity Pumps Versatile for Industrial Uses?
- Rotor Re-welding Services in Melbourne: How Is This Done?
- Rotor Pump Recutting Services in Melbourne: How Does Recutting Work?
- Benefits of Using Progressive Cavity Pumps for Viscous Chemicals in Manufacturing Industries
- Signs of Problematic Drive Shafts in Pumps
- Significance of Pumps in the Agricultural Industry
- Rotors and Stators for Progressive Cavity Pumps: How They Work
- Rusty Pump Rotors: Should you Replace or Resurface?
- Accuracy of Universal Rotor Cutting Machines for Pumps
- Tips to Help Prevent Pump Stator Failure
- Causes of Drive Shaft Failure in Pumps
- Causes of Abrasion Problems in Helical Rotor Pumps?
- Benefits of Chrome Plated Helical Rotor Pumps
- Pump Rotor and Stator Refurbishment: Knowing the Right Signs When This is Needed
- View all article…