QZB Series Submersible Slurry Pumps

QZB Series Submersible Sand Pumps are new-generation high-efficiency, energy-saving pumps designed for long life, efficient operation and ease of maintenance. All the wet end parts of QZB submersible sand pumps are made of strong abrasive-resistant material of Ni-hard and high-chrome alloy. The hardness of this alloy is more than 60HRC. The QZB Series submersible slurry pumps with agitators (not easy to settle) are more suitable for transporting slurry with high concentration of heavy and containing solid particles. QZB Series submersible slurry pumps are the excellent substitutes of vertical slurry pumps or horizontal slurry pumps which are difficult to install due to work site conditions.

Key Structure of QZB Series Submersible Slurry Pumps

Features of QZB Series Submersible Slurry Pumps

Impeller

• Enclosed impellers to maximize efficiency

• Pump-out vanes on both shrouds

         - Minimizes re-circulation

• High chrome liquid ends

• Interchangeable hard metal impellers

• High efficiency impeller optional

Single Casing With Assembly Clamps

• Easy assembly and dis-assembly of liquid end

• Clamp design facilitates rotation of volute

• Large volute reduces friction and wear

• Minimal parts + simple design

Submersible Electric Motor

• Special Designed

• Protection Grade Reaches IP68

• Insulation Grade Reaches F Level, Operating Temperature of Insulation Material up to 155℃

• Three Phase series of PTC-thermistors Inserted in Windings Protects Electric Motor by Electric Control Cabinet

• Refrigeration System Could be Equipped to Chill-down Pump and Lower the Slurry Level

Mechanical Shaft Seal

• Special Seal Assembly (Combined Installation of Two Single Mechanical Seals in Revers Tandem) Efficiently Avoids the Leak of Slurry

• High-strength Stainless Steel Mechanical Seal Installed on The End of Impeller Stops The Hydraulic Pressure Impacting Seal Chamber

Oil Housing

• The Oil in Oil Housing Lubricates Mechanical Seal, Take The Quantity of Heat Away and Stop Penetration of Liquid

• Oil Leakage Probe in Oil Housing Will Alarm to Remind of Replacing Oil or Repairing Mechanical Seal by Electric Control Cabinet Once The Water Permeated from Mechanical Seal of Pump Section to Oil Housing Reaches A Certain Concentration

• The Construction of Oil Injection Hole Can Quickening Feed Rate and Also Guarantee Oil Housing Retains A Certain Amount of Air to Keep Pressure Not Raises too High Thus Enable Mechanical Seal Avoid Excessive Wearing or Leakage

Bearing

• Upper Deep Grove Ball Bearing Carries Radial Force and Lower Bearing Carries Radial Force and Axial Force. Depending on Diversity of Radial Force and Axial Force, Three Forms of One Double-row Angular Contact Ball Bearing, One Pair of Angular Contact Ball Bearings, and One Angular Contact Ball Bearing Plus One Cylindrical Roller Bearing Are Individually Designed.

• Abundant Load Margin of All High-quality Brand Bearings Ensure Long Service Life

Cable and Seal of Electric Motor

• Heavy-duty Rubber-sheathed Cable Has Excellent Mechanical Strength and Resistance of Sewage. Sectional Area of Cable Conductor and Current-carrying Capacity Are Selected by 40 ℃ (But not Generally 20℃) Long-term Operating Temperature, Thus The Current-carrying Capacity of Cable Have Enough Margin Under General Conditions

• Cable Gland Closing Cable Sealing India-rubber Ring to Achievements Reliable Sealing. Between Cable and Wiring Chamber, and Fixes The Cable to Avoid Pulling out.

• The Cable Can Be Easily Recognized and Connected By Its Proper Color and Digital Sign.

• The Wiring Chamber and Electric Control Cabinet Have Earthed Sign and Grounding Fasteners, and The Cable Strictly Is Earthed to Ensure Safely and stabilization.

• Every O Ring, Cable Seal and Mechanical Seal Must Pass Strict Leakage Test to Ensure Reliable Seal of Electric Motor Chamber and Wiring Cabinet

Protection Equipment

• For Less than 7.5Kw Motor, The Pump Is Equipped with Overheating Protection Device and

Water Leakage Probe for Motor Winding

• For Over 11Kw Motor,

The Pump Is Equipped with Overheating Protection Device and

Water Leakage Probe and Float Switch for Motor Winding

• For Over 30Kw Motor, The Pump Is Equipped with Water Leakage Probe On The Top of

Motor Cover

• All Protection Equipment Function Subject to They are Connected with Proper Electric Control Cabinet

Installation Form

• Portable Installation (Hard Pip)

• Portable Installation (Soft Pipe)

Lifting Device

• Reasonable Designed Handle Grip Make Lifting Easily and Safely