DL single-suction multi-stage vertical centrifugal pump

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Type DL pump is single-suction multi-stage vertical centrifugal pump. It is used for water supply in town and city as well as concentrated heating system. It is provided for transferring clear water or other liquid with physically and chemically similar to clear water. The temperature of the liquid generally is below 80 deg C. Type DLR pump is used to transfer the liquid below 120 deg C.

Performance range
Capacity Q: 4.9 ~ 12.6m3/h
Head H: 21 ~ 217m
Construction
The pump is vertically mounted. It has the features of compact structure, low noise and space-saving. The shaft seal can be either packing seal or mechanical seal.

Materials of tolerance parts: The medium-contacting parts I. E. Suction casing, stage casing, discharge casing, impeller, seal ring are made of cast iron, the material of shaft is high--quality carbon steel.

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Q:What is the series of pumps? What's the difference between a unipolar and a multistage?
You're talking about a centrifugal pump. His series says the number of slices of the impeller (excluding the wheel, that is, the wheel)
Q:What are the conditions required for hydraulic pumps to complete oil absorption and compression?
Volume conditions: oil absorption cavity from small to large, complete oil absorption, oil pressure chamber has become smaller, complete pressure oil.Sealing conditions: the hydraulic pump itself should have good sealing
Q:What are the ways of hydraulic pumps?
Hydraulic pump is a power component of hydraulic system. It is driven by an engine or an electric motor. It draws oil from the hydraulic tank to form a component of the pressure oil which is sent to the actuating element.
Q:Working principle and structure of external gear pump
When the meshing teeth on one side of the suction chamber are gradually separated, the volume of the suction chamber is increased, and the pressure is lowered, and the liquid in the suction pipe is sucked into the pump; the suction liquid is divided into two parts to be pushed into the discharge chamber by the gear in the alveolus. When the liquid enters the exhaust chamber, the liquid is squeezed and discharged from the exhaust chamber into the discharge pipe because the teeth of the two gears are continuously engaged. The driving gear and the driven gear keep rotating, and the pump can continuously inhale and discharge the liquid. The pump body is equipped with a safety valve, when the discharge pressure exceeds the required pressure, the delivery liquid can automatically open the safety valve, so that the high-pressure liquid returns to the suction pipe.
Q:What are the parts of a pump? How do you classify it?I just want to know
Before opening the pump suction pipes and pumps must be filled with water. Open the pump, the impeller rotating speed, which leaves the liquid together with the rotation under the action of centrifugal force, the left outside impeller injection, injection of the liquid in the pump shell gradually slow the spread of indoor speed, the pressure gradually increased, and then from the pump outlet. The outflow discharge tube. At this time, in the leaves at the center of the vacuum area of low pressure liquid was thrown to the surrounding formation there is no air and no liquid, liquid pool at the surface of the liquid under the action of atmospheric pressure, through the suction pipe into the pump, the liquid is continuously pumped up from the liquid pool is also continuous outflow from the discharge pipe.Mainly by the impeller, pump shell, pump shaft, bearings and packing sealing devices and other components
Q:Pump unloading in hydraulic transmission,
Can be used for short-term shutdown, pump non-stopNo unloading, usually through the overflow valve back to the tank, high pressure, power, at this time insurable pressure, and so on
Q:What kind of motor does the hydraulic pump need?
Hydraulic pump is a power component of hydraulic system. It is driven by an engine or an electric motor. It draws oil from the hydraulic tank to form a component of the pressure oil which is sent to the actuating element. Hydraulic pump according to the structure is divided into gear pumps, piston pumps, vane pumps and screw pumps.
Q:What is the "variable" of a variable pump?
Variable pump variable refers to the flow can be changed to distinguish from the constant flow of quantitative pumps.
Q:What are the application areas of pumps?
1, urban water supply 2, sewage system 3, civil and construction systems 4, agricultural water conservancy system 5, power station system6. Chemical system 7, petroleum industry system 8, mine metallurgy system 9, light industry system 10, ship system
Q:What is a gear pump for?
Oil pump casing wearIt is mainly the wear of the floating sleeve hole (the normal clearance between the gear shaft and shaft sleeve is 0.09~0.175mm, and the maximum shall not exceed 0.20mm). The gear work is affected by the pressure oil, the gear tip is close to the oil pump casing, and the low pressure chamber part of the pump body is worn. Another kind of wear is the circumferential wear of the work surface in the shell. This kind of wear is mainly caused by the addition of oil which is not clear, so the oil without impurities is necessary.

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