Slurry pump and its over-current parts and wearing parts is common categories of water pump spare parts, pumps required processing medium containing a certain amount of solid particles, the medium will flow components of pump spare parts wear and tear ", the pump flow components will need to adopt wear-resisting material, the water pump is the slurry pump.

Has a wide scope of application of slurry pump, such as copper concentrator, power plant, alumina plant, such as mining companies are used to the slurry pump, its main function is to cyclone, magnetic separation, flotation equipment transporting slurry. Slurry pump of the main structure is divided into the pump body, shaft seal and three parts.

A pump body, slurry pump

Slurry pump used for double pump shell structure, composed of pump body and pump cover outside the pump shell structure, the impeller, sheath, the former guard, guard after pump shell structure. Slurry pump pump shell structure outside the manufacturing material is grey iron, ductile iron, cast steel, three inside the pump shell structure, also known as the pump flow components, there are three types of materials, respectively is KMTBCr26, Cr15Mo3 and rubber.

Slurry pump pump shell structure is flow components, spare parts in the pump at the core of the proportion of the manufacturing cost is very high, this also means that it represents the core of the slurry pump quality level, is to choose a part of the slurry pump should be the first to investigate.

Pump flow components manufacturing materials, spare parts KMTBCr26 metal grain fine, good abrasion resistance, high cost performance, currently 70% of the slurry pump flow components made of this material. Cr15Mo3 made in material flow components while higher wear resistance, hardness, better service life can reach 1.5 times of KMTBCr26, but the cost to achieve higher KMTBCr26 2 times, so price is low, the use of smaller scale. Rubber in three manufacturing material corrosion resistance is better, when the medium containing solid particles sleek, with no sharp corners, slurry pump lift of no more than 40 meters, the appropriate choice of rubber manufacturing flow components.

Second, the slurry pump shaft seal

Slurry pump vice impeller shaft seal packing seal, seal, mechanical seal.

1, the slurry pump packing seal

Slurry pump packing seal is to rely on in terms of hard and soft sealing effect between packing and shaft sleeve, packing seal and shaft seal water shaft seal water pressure must exceed slurry pump outlet pressure of 1.5 kg, the seal mode widely used in dressing plant, coal washery.

2, vice impeller of slurry pump seal

Vice impeller of slurry pump seal is produced by vice impeller pressure sealing effect, for slurry pump flow backward pressure not to exceed 15% slurry pump outlet pressure, when the user of the water shortage in this seal.

3, the slurry pump mechanical seal

Slurry pump mechanical seal movement by mechanical seal ring close friction play a seal, mechanical seal points divide again without water injection type mechanical seal, the water injection type outside wash in the mechanical seal, the water injection type mechanical seal 3 kinds. No water injection type mechanical seal does not need to add shaft seal water, about 4000 hours service life; Outside flushing water injection type mechanical seal and shaft seal water shaft seal water pressure of 1.5 kg, the service life of 6000 hours; Water injection type washing mechanical seal with shaft seal water required, shaft seal water pressure than slurry pump outlet pressure of 1.5 kg, the service life of about 8000 hours.

Third, transmission parts of slurry pump

Transmission parts of the slurry pump is composed of pump shaft, bearing, bearing box. For bearing lubrication, we can adopt dry oil lubrication and thin oil lubrication in two ways, generally in the slurry pump is medium temperature is higher or larger slurry pump, need to use thin oil lubrication and strengthen the cooling water system.