6/4D Dredging Boat Pump Flux Parts Replacements OEM High Chrome
Cast Iron Alloy Hard Metal Sand Pump Parts
Construction of Gravel Pump:
Construction of Gravel Pump is of single casing connected by means
of clamp bands and wide wet passage. The wet parts are made of Ni
hard and high chromium abrasion-resistance alloys. The discharge
direction of punp can be oriented in any direction of 360 degree.
This type of pump possesses the advantages of easy installation and
operation, good performance of NPSH and abrasion resistance
| dredge pump features: |
| 1. Single stage and single suction |
| 2. haft open impeller |
| 3. anti abrasive material,high chrome alloy(flow parts) |
| 4. Adjustable between impeller and protection plate |
| 5. Max density:50-60%(by weight) |
| 6. easy intallation |
| 7. Efficient working |
Main parts
1. Support frame: main part for supporting flow parts, connect with
bearing glands on the two sides to form bearing assembly.
2. Pump casing: connect with support frame by 6 bolts, can rotate
in 60°gap according to needs, impeller, protecting plate, pump
cover installed inside, material is abrasion resistant, the
impeller, pump casing and pump cover of this pump are same as
6PNL-35 vertical mud sand pump.
3. There are two kinds of pump covers: flat pump cover and long
pump cover with flange
4. Shaft seal box: installed outside of protecting plate, seal
assembly installed in it, it joints shaft sleeve, lubricating it
with grease trough grease fitting to prolong lifetime.
5. Shaft sleeve: installed at the back of impeller , can compress
tightly by impeller rotation.
6. Water retaining plate: installed in front of the front bearing
plate, compressed with a screw so that it can rotate with pump
shaft in same speed and direction, and form labyrinth seal with
front bearing gland to prevent the liquid spilling from shaft
sleeve from damaging bearing.
7. Support frame oil injection hole: one oil fitting on each side
of support frame for lubricating the bearing.
8. Pump rotation direction is clockwise judge from motor side,
counter clockwise is prohibited.
9.Impeller: The impeller generally has three vanes or five vanes
and wide application range. It is made of wear-resistant high
chromium alloy cast iron (hardness>58HRC, impact
toughness>9j/cm2). The impeller is fixed on the pump shaft with double thread, and
the thread tolerances are inspeed according to the pitch diameter
of thread. Disassembly rings are installed at the rear of the shaft
sleeve to make maintenance easy.
| No. | ITEM | MATERIAL |
| 1 | Impeller | High-chrome alloy |
| Rubber |
| 2 | Volute casing | High-chrome alloy |
| 3 | Front liner plate | High-chrome alloy |
| Rubber |
| 4 | Rear liner plate | High-chrome alloy |
| Rubber |
| 5 | Liner | High-chrome alloy |
| 6 | Expeller | High-chrome alloy |
| 7 | Shaft sleeve | 3Cr13 |
| 8 | Water-seal ring | High-chrome alloy |
| 9 | Shaft | 45#steel quenching And high temperature tempering |
| 10 | Bearing housing | Gray iron |
| 11 | Expeller ring | High-chrome alloy |
| Rubber |
| 12 | Front casing | Gray iron or Nodular cast iron |
| 13 | Rear casing | Gray iron or Nodular cast iron |
