1/23/2017
1/21/2017
1/19/2017
1/18/2017
1/13/2017
1/12/2017
1/11/2017
OS centrifugal pump advantage conditions
OS-type pump for the axis of the open single-and double-suction horizontal centrifugal pump, mainly for water plant, air conditioning water recycling, building water supply, irrigation, drainage pumping stations, power plants, industrial water supply systems, fire systems, shipbuilding industry, occasion.
OS-type company in the open single-stage double-suction horizontal centrifugal pump in similar products is the latest type, contains the following characteristics:
1) compact structure
OS-type open single-stage double-suction horizontal centrifugal pump adopts the international popular linear design, beautiful appearance, good stability, easy to install.
2) smooth operation
OS-type single-stage double-suction horizontal centrifugal pump designed to optimize the design of the double-suction impeller to minimize the axial force, with excellent hydraulic properties of the leaf-type, short shaft and good rigidity, vibration.
3) Shaft seal
OS-type single-stage double-suction horizontal centrifugal pump shaft seal used Burgmann mechanical seal or carbon fiber packing seal, to ensure that 8000 hours of operation without leakage.
4) Pump body
OS-type single-stage double-suction horizontal centrifugal pump in accordance with the need to adopt a double volute pump body, radial force is small, long life wearing parts.
1/09/2017
Mining submersible pump selection
When we choose the mine submersible pump, what needs to be considered? Today, we come to talk to you, not very perfect, we want to help it. Can be better to choose their own submersible pumps.
First, the structure of mining pump pump on the size, structure and pump house layout and so have an impact, and thus the pump station is very related to the cost, if the water level is low, the need to build a deep pumping station, Select the use of vertical pump can reduce the area of the pump house, cost reduction, to ensure the normal suction pump mining conditions, to ensure that cavitation does not occur under the premise, should take full advantage of mine suction pump suction vacuum height, Reduce the depth of the pump station and reduce the cost, while avoiding the pump installation height difference is too large, resulting in uneven depth of the foundation of the pump or the entire pumping station increased depth.
Second, we should choose a more efficient mine pump. According to the different requirements of the water supply object on the reliability of water supply, choose a certain number of standby pumps to meet the water requirements in the event of an accident, do not allow to reduce the water supply situation, there should be two sets of spare units, allowing a short time water supply , You can only set up a spare pump. City water supply system in the pump station, generally only with a spare pump. Normally the type of spare pump can be the same as the largest pump in the pumping station.
1/06/2017
1/04/2017
Replacement Method of Pump Impeller
After use of the pump impeller may produce some damage to one, the impeller should be replaced.
1) pump impeller surface cracks.
2) pump impeller surface due to corrosion, erosion or cavitation to form more holes.
3) due to erosion caused by pump impeller cover and leaves thinning, affecting the mechanical strength.
4) pump impeller mouth ring hub more serious partial mill phenomenon without repair value.
Repair of pump impeller, Repair method of impeller of water pump
Pump impeller due to sediment erosion, often the formation of grooves or streaks, and sometimes due to cavitation damage, the leaves appear honeycomb holes. If the impeller surface cracks, there are more trachoma or holes, due to erosion leaving the impeller wall thinning, affecting the mechanical strength of the impeller and impeller performance; blade impingement by solid debris or impeller entrance has serious eccentric wear , Should replace the new impeller. If the performance of the pump and the impeller itself has little effect on the strength, you can use welding repair methods. After welding to make use of grinding wheel flat, and do static balance test. In the replacement of axial flow pump blades, should be replaced with a complete set, in the replacement of each blade should be weighed before, and should pay attention to the angle of the installation of the blade to be consistent, so as not to cause axial flow pump vibration.
1/03/2017
1/02/2017
Causes of Failure of Boiler Feed Water Pump
Whether the boiler can be safe and stable operation and the boiler feed pump has a great relationship, with the modern automation technology in the boiler feed pump in the promotion and application of modern boiler liquid level automatic adjustment system has become the key to safe and stable operation. The promotion and application of modern technology does not reduce the boiler feed pump failure.
Failure analysis of modern large-scale boiler feed pump system consists of multiple feed pumps, starting from two to three main feed pump, one or two electric water pump as a backup or auxiliary. This feed pump configuration is conducive to the failure of the feed pump main engine system or can not meet the boiler operation needs, start spare water supply pump system to add enough to avoid the pump failure caused by the boiler shutdown. Common boiler feed pump failure is mainly concentrated in the lubricating oil system, shelter system, speed control system, auxiliary motor overheating and inadequate flow and so on several aspects. Through the scientific analysis and troubleshooting reasons to exclude and solve the boiler feed pump failure basis, only for the cause of the malfunction to be eliminated in order to avoid the recurrence of the same type of failure. The following describes the causes and exclusions of different fault types.
The stable operation of the boiler feed pump is the basis of the stable operation of the boiler, is an important part of the modern boiler level control system, once the feed pump failure will seriously endanger the operation of the boiler safety, serious will lead to major accidents. Therefore, strengthening the boiler system to the daily maintenance and repair of water pumps, boiler maintenance has become an important modern work.
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