Multistage Single Suction Centrifugal Pump

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General Description

D/MD/DF/DY series pump is multi-stage single suction sectional centrifugal pump with excellent hydraulic model, it has advantages of high-efficiency, energy-saving, wide performance range, operating safely and steadily, low noise, long life and convenience for installing and repairing etc. It can deliver heat water, oil, corrosive or wearable medium by changing material of the pump or coupled with extra cooling system.
 

D series pump is used in mine and urban project for delivering clear water without solid particles or other liquids which are physically or chemically similar to clear water. The temperature of liquids must not exceed 80℃.
MD pump is used to deliver neutral water with solid particles below 1.5% (viscosity less than 0.5mm) and other sewage water. It is suitable for using in steel factory and mine etc. The temperature of liquids must not exceed 80℃.
DF pump is used for delivering corrosive liquids without solid particles, the temperature of liquids is -20℃~105℃.
DY pump is used for delivering oil and petroleum liquid without solid particles and viscosity below 120 centistokes , the temperature of liquids is -20℃~105℃.
The inlet pressure of above pumps is less than 0.6Mpa.

Performance Range
Capacity: 6.3-600m3/h
Head: 22.8-650m

Instruction of pump type
For example D(MD,DF,DY) 85-67X3
D: Multi-stage horizontal centrifugal pump
MD: Multi-stage wearable centrifugal pump
DF: Multi-stage anti-corrosive centrifugal pump
DY: Multi-stage oil centrifugal pump
85: Rate capacity is 85 m3/h
67: Rate head is 67m
3: 3 stage(3 impellers)

Structure
Type D (MD,DF,DY) pump consists of stator, rotator, bearing and shaft seal:
1. Stator: main parts is suction casing, stage casing, discharge casing and Diffusor, they are screw up by poles to become a working house. The suction direction of type D pump is horizontal, its discharge direction is upward; the discharge direction of type MD, DF, DY pumps are upward, the suction direction is horizontal, they can be made upward according to user requirement.
2. Rotor: it is consist of shaft, impeller, balance disk, and shaft sleeve etc. shaft supplied power to impeller. The axial force is balanced by disc. The shaft sleeve is mounted on shaft to protect shaft.
3. Bearing parts: it is consist of bearing body, bearing and bearing cover etc. The bearing of type 85-67,155-67,600-60 pump is sliding bearing, lubricated by dilute oil; the other pump bearing is rolling bearing, lubricated by grease.
4. Shaft seal: it is usually adopted soft packing seal, consist of sealing house on suction casing, packing , blocking water ring, the seal house have some pressure water to cool. Lubricate and seal pump. Type D pump pressure water come from pump itself, type MD, DF, DY pump pressure water is come from pump itself or outer water, type MD, DF, DY pump usually adopt mechanical seal .
Drive
The pump is driver directly by motor through coupling. View from motor end, the rotating direction of pump is clockwise.

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Q:Overheating problems... radiator? thermostat? water pump? head gasket?
could be several things always check the simple things first thermostat and cap the water pump will not always leak if it is bad if you dont see it leaking grab the fan or the pulley on the pump and try to move it if you get any movement it is bad check the oil see if it is brown and milkey looking if it is then it is your head gasket this will also make it hard to start check the plugs to see if they are wet if so there is water in the cylinder which means head gasket and always have the head checked for cracks or being warped a machine shop can do that for you
Q:How Do You Identify a Bad Water Pump?
I agree with f100-supersabre's answer. And here's some more to ponder... Chances are your water pump is just fine. When was the last time, if ever, you serviced your cooling system? And by that I mean dumping the old anti-freeze, back flushing the system to include the heater core and refilling with fresh coolant. If the answer is never then your radiator is probably toast. The internal passages are clogged and it does not dissipate heat effectively any more. Another thing to consider: the electric cooling fan(s). How many does your car have? With one fan, the fan will run: Anytime the A/C is switched on. When the tempurature sensor in the cooling system rises above the preset value of the sensor. With two fans: One will only and always operate when the A/C is switched on. The second will operate in response to the preset value of the cooling system sensor. Check the operation of the fan or fans. Turn on the A/C, the fan or one of the fans will turn on. With one fan only, turn the A/C off and let the car idle until the the single fan turns on in response to engine temperature. With two fans, you can let the A/C run and let the car idle until the second fan turns on in response to engine temp. If the fans don't work as they should, the first place to look is for a blown fuse. High amp fuses are found in the engine bay in a seperate fuse box ...look for this ..pop the lid and check the fuses. A map for the fuse purpose/location is usually found under the lid. If the fuses look okay, then it may be a bad sensor or it might be a bad fan. The sensor is usually less expensive and easier to swap out than the fan assemblies. Your cooling system, if has been neglected, may need both a radiator and some work on the fans if they prove less than up to snuff.
Q:how hard is it to do a water pump change on a 1999 vw jetta stick shift?
The water pump is driven by the timing belt on that engine. You don't have to take the alternator, power steering pump, or the a/c compressor off, but you do have to make sure it is timed right. Not too hard to do, just make sure the marks line up. Good luck!
Q:could my water pump be going out?
your right on the problem so to really figure it out take the hose off or lose enough to make a mess and see it flowing. Take it off at the water pump thats where it comes out at. the water pump pumps water into the radiator or up, not the other way around.
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:how do you pull the lower unit of a nassan 70hp outboard to install a new water pump?
hi you need to get the workshop manual for your motor. You can go to the library I am sure they will have one. The basics though... make sure you have a lower unit gaskey set, a full water pump rebuild kit and the correct impellor. You need the manual so that you can locate the correct bolts to loosen and the procedure for disconecting the gear shifting mechanism. With the manual its an easy job. without.. its kind of pot luck if you have never done it before. I have changed impellors and water pumps on many different boat motors and i have aways used the manuals. Even now I would still use the manual as a reference to change the impellor and water pump housing in my Johnson even though i have done it before. The manual will probily cost about $25 but it will save you hundreds in the long run as you will be able to trouble shoot other problems.
Q:Under what circumstances should we set up fire pool and fire pump room? Is it necessary to have a building?
Public construction property
Q:So im trying to take out a screw on my water pump?
Drive a smaller size 12 point socket onto it.
Q:What is the function of a submersible pump?
Submersible pump motor and pump is directly connected with the water pump body into the water to work, it is suitable for the extraction of groundwater from wells, can also be used in rivers, reservoirs, canals and other water projects: mainly used for irrigation and plateau in the drinking water, but also for the city, factories, railways, mining and construction site the use of water supply and drainage.Characteristics of submersible pumps for well1 、 motor, water pump, submerged operation, safe and reliable.2, the well pipe and pump water pipe without special requirements (i.e.: steel tube wells, tube wells, Doi ash can be used).3, installation, use and maintenance of convenient, simple, small footprint, do not need to build pumping stations.The structure is simple, and the raw materials are saved.4, submersible pump conditions are appropriate, properly managed, and has a direct relationship with the service life.
Q:Stop the engine immediately and stop the circulating pump and the condensate pump. What's the harm to the turbine?
Then look at what is the circulating water pump and condensate pump users, circulating water with oil in the oil cooler then, condensed water supply pump seal water, water pump can't pump up, how will you know.

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