2019-07-12 05:56:20 Source: sand dredge pump-slurry pump parts-China Do Pump
On dredge pump selection, dredge pump parts are taking an important role to the sets of the pump, so this article show how we select dredge pump based on the dredge pump parts. Do pump company is a manufacturer of dredge pump, sand pump, submersible dredge pump, slurry pump, ladder dredge pump, on board dredge pump, one walled dredge pump, double walled dredge pump, booster dredge pump, electric submersible dredge pump and hydraulic dredge pump.
The impeller is the core component of the mud pump. Because of its rotation, the sand and mud are sucked into the pump chamber from the suction pipe. After the speed increase and pressure, it is discharged into the mud discharge pipe and passes through the mud discharge pipe. The road leads to the sand and mud pit. The utility model mainly comprises a front and a rear cover plate and a blade forming a closed impeller, and adopts a high hardness and erosion resistant material A05. The impeller has high efficiency, good suction, deep digging and long service life, and is an ideal impeller for dredging pump. ;
The pump body is the most important part of the mud pump except the impeller. The shape of the cavity directly affects the working efficiency of the pump, and it also has a certain influence on the overcurrent capability of the pump. Because of its high wear resistance, high pressure and safety requirements, the material used is high. Hard wear-resistant white cast iron A05, hardness up to 58HRC.
The front lining is the main component of the wear-resistant pump. Because of its high surface over-flow speed, it has the same abrasive and wear-resistant requirements as the impeller. The material is also made of high-hard anti-abrasive material A05.
The rear lining is the same as the front lining. It is also the main component of the wear-resistant pump. It forms the over-flow cavity of the mud pump together with the pump body and the front lining. Similarly, because of its high surface overcurrent velocity, it has the same abrasive and wear resistance requirements as the impeller, and its material is also made of high-hard anti-abrasive material A05.
The main function of the front cover is to connect the mud pump and the suction line, and also connect the front lining plate; and to withstand the forward axial pressure in the pump cavity when the mud pump is running, because it is not resistant The abrasive requirements, but the need for pressure resistance, and taking into account the casting properties, the use of material ZG230-450.
coupled with the back cover, there is continuous high-pressure sealing water at the upper end of the water-sealing chamber to prevent the pumped mud from entering the shaft seal through the gap between the impeller and the rear guard plate, destroying the seal and simultaneously Reduce wear on the backing plate. It also has no wear resistance requirements, but requires pressure resistance requirements. Considering the casting properties, it also uses the material ZG230-450.
The shaft seal assembly is responsible for the shaft seal of the pump. The sealing device is provided with four skeleton oil seals, the first passage is arranged on the impeller side, and is mainly used for blocking the sediment from entering the shaft seal; the second and third passages are arranged at the intermediate portion to serve the most effective sealing function; the fourth passage is provided at The bearing body end is mainly used to prevent grease leakage. The shaft seal seat is provided with greased holes, which should be filled regularly, but the amount added each time should not be excessive. The sealing component has good sealing effect, less maintenance and overhaul during operation, and the number of shutdown inspections is much less than that of the packing seal, so that the utilization efficiency of the whole unit and the whole boat is greatly improved, and the utility model has good economical use.
The impeller removal ring is mainly used for auxiliary disassembly of the impeller. When the pump is running, the impeller will be subjected to a large torque of the pumping medium, so that the threaded connection between the impeller and the shaft becomes more and more tight, so that it is difficult to disassemble during maintenance. Therefore, a disassembly ring is provided to solve this problem. The impeller disassembly ring is a ring member composed of three identical arcs, each of which is bolted between the two lobes, and the axial positioning between the shaft and the sleeve is not a normal vertical plane but a tapered surface. The angle of this cone is outside the self-locking angle of the two parts. When the torque between the impeller and the shaft is large and difficult to disassemble, unscrew the coupling bolt between each two lobes of the detaching ring, then there is no external force between the lobes and the lobes, and the shaft generated by the torque between the impeller and the shaft The force will push each flap away in the radial direction. After pushing open, the sleeve and the impeller, the impeller and the shaft are no longer pressed, the axial internal force between the parts is eliminated, and the tightening between the impeller and the shaft is also It is loose, so that the impeller can be easily removed from the shaft.
For better understanding of the dredge pump selection and dredge pump parts, contact dredge pump for sale Do pump at info@dopumpgroup.com, or call us at 008615031104888.
