Boiler Feed Pump MD

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Boiler Feed Pump  Brief

This pump is horizontal sectional multistage centrifugal pump,due to high pressure and big flow ,widely application for boiler feed industrial,mining,water supply for high bulding,water circulation system,oil field ,etc

Because of different design,it can be divided into five type pumps:

1.D series pump:the medium temperature is not exceed 80°C, applicate to supply and discharge water for high buildings, resident,mine,fire fighting, pressure boosting and refrigeration water circulation for air conditioning, etc.

2.DG series boiler water feed pump:medium temperature is not exceed 160°C, applicate to transport hot water, such as water feed to bolier, municipal and industrial heating system.

3.DY multi-stage centrifugal oil pump: transport oil and oil product without solid at temp range -20—105°C, viscosity is less than 120.C.S.T

4.DF series stainless steel anti-corrosive multi-stage centrifugal pump: transport corrosive liquids without solid at -20—105 °C

5.DM series wearable mining multi-stage centrifugal pump: applicate to transport mining water with particles <1.5%,size<1mm, -20--105°C..

Boiler Feed Pump  Parameter range:

Rated flowrate: 6-1000m3/h

Rated head: 40-2000m

Rotate speed: 3500r/min,2900r/min, 1750r/min,1450r/min

Cycle:50Hz/60Hz

Bearing Specification

Pump Model

D6-25

D12-25

D25-30

D25-50

D46-30

D46-50

D85-45

D85-67

D155-30

D155-67

D280-65

D450-60

Bearing specification

N306

N306

N307

N308

N307

N308

N309

N312

N312

N313

N320

N320

Bearing qty

2

2

2

2

2

2

2

2

2

2

2

2

Boiler Feed Pump  Structure Introduce

1.This series multi-stage pump have two bearings on begin and end shaft, flexible pin coupling coupled between pump and motor,.the rotating direction seen from the motor is clockwise

2.Horizontal suction and vertical discharge,but the DG pump are both vertical.Multi-stage pump 3.The bearing is lubricated by butter.

4.Shaft seal:Gland packing seal /mechnical seal

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Q:My fish tank pump is deep enough, it doesn't bubble up. Without oxygen supply, but it can filter. Does it damage the pump itself?
Three in one pump with a hose connected to the oxygen pump as the pipe above the water so that the air will enter the pump, you can spit bubblesYou put it too deep and put the hose into the water too. Without air, you can't spit bubblesIf the pipe is not long enough, you can find a hose for the oxygen pump instead of a long tube, with the hose out of the water and fixed
Q:Water pump eliminates air
First of all, why should exhaust air, pump suction principle is the rotation of the impeller, pump water inside the throw out, and then let the inlet pipe into a vacuum. Then, under the influence of atmospheric pressure, the water pressure is pumped into the pump. Therefore, if the water is not filled, the sealing of the pump is impossible to pump the air inside the evacuation of high vacuum. In other words, do not fill the water, you can not smoke water. You can hear the noise in the pump when the water bubbles under the bottom vacuumThe water doesn't go up because it doesn't have enough vacuum!The reason 1 is because there is no water filling,2, because your pump and water vertical height higher than the pump itself suction stroke.3., the pipeline resistance is too large (including the pipe diameter is too small, elbow and so on)
Q:Flow 70 cubic meters per hour; lift 35 meters, choose what standard water pump?
If you want to install simple, you choose vertical single stage pipeline pump, he imports and exports in a straight line above, installation super simple. If the installation does not require, IS ah, GD ah, you can.
Q:Water pump maintenance what should be maintained?
Bearings, seals, impellers - removing dirt
Q:Pump flow 6M3/H is an hour, how many tons of water?
Flow 6M3/H, that is, an hour can smoke 6 tons of water. But according to the power, head and flow calculated by formula, the water pump efficiency is 98%, can it be achieved?
Q:How to measure the temperature of pump body?
It's the temperature of the pump motor!In addition to large pumps, water temperature is rarely monitored. Even so, the temperature of the pump body will not be measured.Since the water pump pumping, the leaves, vanes and shells are no temperature rise, the temperature is mainly concentrated in the bearing: small pumps rely on the work medium can play a role in reducing friction heat;Heating large pump mainly in the thrust bearing and guide bearing, if the bearing is lubricated by water cooling water, if there is oil lubricated oil cooling equipment specially, temperature monitoring of bearing large pumps can be installed in the pump thrust bearing temperature sensor to monitor the varnay.
Q:90kw pump star delta start, in the end to use the circuit breaker, AC contactor (Star contactor, angle contactor), what kind of thermal relay?
Imports, such as Schneider, press: plastic case press 250A, contactor select 115 of 2, 95 of 1 can.Domestic recommendations: Press: plastic case press 250A, contactor 160, 2, 115 of the 1 can.
Q:How does a pump pump water?
Centrifugal pump is the use of centrifugal force to increase the pressure of water and make it flow of a pump. It is composed of pump shell, impeller, rotating shaft and so on. The motor drives the rotating shaft, the rotating shaft drives the impeller to rotate at a high speed in the pump casing, and the water in the pump is forced to rotate with the impeller to generate centrifugal force. The centrifugal force forces the liquid from the impeller periphery to throw, the high speed, the high pressure water flows through the pump shell outside the pump, the impeller center forms the low pressure, thus draws in the new water flow, forms the unceasing water current transportation function.
Q:The problem of single phase pumps
Is your starting capacitor pump is broken. Because you pump it is a single asynchronous motor..... Single-phase asynchronous motor by capacitive phase shifting function, the single-phase alternating current isolated from another 90 degree phase alternating current. The two alternating current into two groups or four groups of motor winding, forming a rotating magnetic field inside the motor rotating magnetic field induced current in the rotor, the induced current magnetic field and rotating magnetic field in the opposite direction, by rotating magnetic field push pull into the rotating state, because the rotor must be cutting magnetic lines to produce induction current, so the rotor speed must be lower than the rotating magnetic induction motor speed, so thatSo if the starting capacitor is broken, then your pump will start difficult,
Q:What does the pump lift mean?
The pump head is the parameter you must know when you buy a pump, that is, the height of the pump.To buy a pump, I think the Heathrow pump is OK. I bought it earlier this year. It's not bad yet, but the quality is pretty good.

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