Year1
- 介质温度：
- 不得超过60℃，R型（耐高温）不得超过140℃
- 潜水深度：
- 不大于40米，最小潜水深度以淹没电机为准
- 材质：
- 耐磨合金
Type
Submersible sand pump
Suitable for pumping construction sand, silt, coal slurry, fly ash, silt, tailing slurry, ore, iron ore, rivers, lakes, reservoirs, Sand pumping and dredging projects such as ports can also be used to remove sand from sedimentation tanks in steel plants, power plants, iron ore plants, oil fields and other industrial and mining enterprises, and to remove sediment from sewage treatment plants, etc.
The flow-passing parts of the pump are made of high-alloy wear-resistant materials, which have good wear-resistance and large flow passages. They are suitable for transporting sediment, slurry, coal slurry, sand and gravel, etc. containing large solid particles. medium.
This series of products is designed and manufactured by absorbing advanced domestic and foreign technologies. In addition to the main impeller, a set of stirring impellers are added to the bottom of the water pump, which can spray the deposited sludge into turbulent flow. It enables the water pump to achieve high performance without auxiliary devices. Concentration delivery. The unique sealing device can effectively balance the pressure inside and outside the oil chamber, maximizing the reliability of the mechanical seal. The motor adopts multiple protection measures such as overheating protection and water intrusion detection protection, allowing it to operate safely for a long time under harsh working conditions.
Type
Submersible sand discharge pump
is a hydraulic machine in which the motor and water pump are coaxially submerged into the medium to work
.
Conditions of use
br/> The source is, / three-phase AC power supply, and the capacity of the distribution transformer is times the rated capacity of the motor.
The medium temperature shall not exceed ℃,
The type (high temperature resistant) shall not exceed ℃,
Contains flammable and explosive gases.
The maximum weight concentration of solid particles in the medium is within the concentration of ash and slag, and the concentration of slag and mud.
The diving depth of the unit shall not be greater than 1 meter, and the minimum diving depth shall be subject to submerging the motor.
The working position of the unit in the medium is vertical, and the working status is continuous.
Application
Dredging of rivers, lakes, reservoirs and ports
Sand pumping from rivers, lakes and seas and other waters
Land reclamation in coastal areas
Engineering construction drainage Sediment and mud
Municipal pipelines, rainwater pumping station sediment cleaning
Steel plant sedimentation tank, mineral processing plant sedimentation tank, power plant coal sedimentation tank, sewage plant oxidation ditch sedimentation tank cleaning
Steel plant blast furnace Transportation of water slag and slag
Transportation of tailings, slag and slurry in mineral processing plants
Removal of coal slag, slime and coal slurry in coal mines
Transportation of fly ash, coal slime and coal slurry in power plants
Absorb various solid particles of emery sand, quartz sand and steel slag.
Ore dressing, gold panning, iron sand pumping
Conveying slurry materials containing various impurities
Conveying other media containing larger solid particles
Structural features
The whole machine is dry In the lower pump type, the motor adopts an oil chamber sealing method with a built-in mechanical seal, which can effectively prevent high-pressure water and impurities from entering the inner cavity of the motor.
In addition to the main impeller, there is also a stirring impeller, which can stir the sludge settled at the bottom of the water into a turbulent flow and then extract it.
The flow-passing components such as impeller and stirring impeller
are made of high-hardness high-chromium wear-resistant alloy steel
Wear-resistant, corrosion-resistant, strong sewage discharge ability, and can pass larger solid particles.
The motor is submerged underwater and is not limited by the suction range. It has a high slag suction rate and more thorough desilting.
The overall equipment is simplified and no auxiliary stirring device or spraying device is allowed. The operation is simple and the total investment of the unit is reduced.
The stirring impeller is directly close to the deposition surface, and the concentration is controlled by the depth of descent. When the specific density of the medium is large, the concentration of the medium can be increased by installing auxiliary devices.
Precautions for installation and use
Before starting, carefully check whether the electric pump has been deformed or damaged during transportation, storage, and installation, and whether the fasteners are loose or fallen off.
Check whether the cable is damaged or broken. If it is damaged, it needs to be replaced to avoid leakage.
Check whether the power supply device is safe and reliable. The rated voltage must match the nameplate.
Use a megohmmeter to check that the cold-state insulation resistance of the motor stator winding to ground must not be less than
.
It is strictly forbidden to use the pump cable as an installation and lifting rope to avoid danger.
The rotation direction of the pump is counterclockwise when viewed from the water inlet. If it is reversed, any two wires in the cable must be reversed and the water pump can rotate forward.
The water pump should be submerged vertically into the water. It is not allowed to be placed horizontally and cannot be trapped in the sludge. When the water pump is moved, the power supply must be cut off.
After the electric pump has been used many times, it must be placed in clean water and run for several minutes to prevent sediment from leaving in the pump and ensure that the electric pump is clean.
When the electric pump is not used for a long time, the electric pump should be taken out of the water to reduce the chance of the motor stator winding getting wet and increase the service life of the electric pump.
Under normal working conditions, after one year of operation of the electric pump, it should be maintained and maintained, replacing worn wearing parts, checking the tightening status, replenishing or replacing bearing grease and insulating oil in the oil chamber, to ensure The electric pump works fine.
Selection steps
Output basic data
Characteristics of the medium: medium name, specific gravity, viscosity, corrosiveness, toxicity, etc.
The particle diameter and content of the solids contained in the medium.
Medium temperature (℃)
Required flow rate
Generally, leakage in the pipeline system of industrial pumps can be ignored in the process flow, but the impact on flow rate when the process changes must be considered. If agricultural pumps use open channels to transport water, leakage and evaporation must also be considered.
Pressure: suction pool pressure, drainage pool pressure, pressure drop (head loss) in the pipeline system.
Pipeline system data (pipe diameter, length, type and number of pipe accessories, geometric elevation from suction pool to pressure pool, etc.).
If necessary, the device characteristic curve should also be drawn.
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