Multistage Single Suction Centrifugal Pump DG Series
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General Description
DG horizontal Multi-stage boiler feed pump can delivery clear water without solid particles or other liquid which the physical and chemical feature is similar with clear water. It is suitable for boiler feed water or deed water for high pressure boiler. The temperature range of the liquid is from -20℃ to150℃, and the inlet pressure is not allowed more than 0.6Mpa.
Performance range
Capacity : 3.75~ 288m3/h
Head : 50 ~ 1540m
Instruction of pump type
For Example DG25-80X10
DG — Single-suction, multi-stage, boiler feed pump.
25 — Pump capacity 25 m3/h.
80 —Single-stage head of pump 80m .
10 — pump stage number is 10.
Structure
DG series pump is single casing segmental multi-stage centrifugal pump, the main parts is stator, rotor, bearing and shaft.
Stator part: it mainly consists of suction stage, mid-stage, discharge stage and diffuser; they are strained through a lever and form a working chamber. The inlet and the outlet are vertical upward. The combined surface between each stage is sealed through metal surface and also with sealing o-ring as auxiliary seal.
Rotor part: it mainly consists of shaft, impeller, and balance drum and shaft sleeve. Shaft transfers power to impeller and make it work. The axial force is balanced by balance disc and there is rechargeable shaft sleeve to protect shaft.
Bearing part: It mainly consists of bearing body, shaft cover and sliding bearing. There are two single centripetal ball bearings in bearing body to prevent balance disk from abrasion. The sliding bearing is lubricated by dilute oil, there is cooling chamber in bearing body and the bearing can be cooled with exterior water.
Shaft seal part: shaft seal uses soft packing seal. It mainly consists of seal box, packing, packing ring and packing cover. The shaft is sealed, cooled and lubricated by exterior water from seal chamber. The mechanical seal can also be used as requirement and it need be cooled, lubricated and washed by exterior water.
Drive: Pump is directly driven by motor through flexible coupling. View from motor end, the rotating direction of pump is clockwise.
Material of main parts
The medium-contacting parts are made of cast iron .
- Q: I need information about basic water pumps. I'll have to build a mechanical one for school. Do you have any ideas, information, designs, links? Thanks!
- A very simple and old design for a water pump is called the ball-chain or bucket-chain pump. A google search should show you what they are. Building one should be fairly straightforward and simple.
- Q: A Pump is direct driven by a 25 HP 900 rpm electric motor at rated load. In order to to double the quanitity of water delivered, it would be necessary to substitute a motor rated at____HP at____rpm. ans. 200 and 1800. not sure how they came up with this answer...whats the equation???
- N = (95 H.C)/D Where N = rev/min D = diameter of impeller over blade tips in metres H = total head in metres C = constant. C depends on the shape of the pump and normally lies between 1.05 and 1.2 Later edit. I'm not sure if you are aware of it but each impeller has it's own characteristic performance curve.
- Q: One month ago, mechanics replaced water pump for my car, 04 dodge stratus, 100000 miles. When I went to get the car, there was big noise coming out from engine. The mechanics told me it was because of sediment in auto oil system and he show me some sediment he took out. I know little about car so I thought he was right. But now the noise changed and engine light came on. I went to firestone to check it. The report said timing jump and cranked. The second day the engine died totally. And I went to another two mechanics. They said the previous one who replaced the water pump did something wrong to timing chain. But that mechanics didn't admit it. What can I do?
- You have a good case for small claims court, but you'll have to prove the facts in court, not here on yahoo. 1) Prove that the first shop changed your water pump. (I think there's a good chance that mechanic did, indeed, mess up the timing.) 2) Get something in writing from any subsequent, licensed mechanic who thinks the timing was changed. At 100,000 miles, there's a fair chance your timing chain could have been old, needing replacement, but if the first guy replaced the water pump, that seems the likeliest culprit. Worse, I hope you didn't ruin the motor. Sometimes when your motor is out of time, you can bend a valve or put a hole in the piston. Better get your motor checked by someone who knows what they're doing then consider your options- small claims or the first mechanic's insurance company. If you talk to the insurance company, you should have a lawyer do the talking. Good luck!!
- Q: The pump assembly and the pump are not a thing
- Yes, all the auto parts are called assembly, and the pump is the same. It's called water pump assembly. Also, the pump half assembly is the water pump head.
- Q: I have a water leak, and not from the radiator. It is on the side of the motor where the timing belt is. Could it be the water pump? or possibly freeze plugs? If so where are these?
- On your car the timing belt drives the water pump. At the same time check the tension er. and replace the belt. its a big job. you drop the front engine mount on most models.
- Q: vw tells me the pump is defective, bad water circulation. i noticed the fans did not turn on when it began to overheat. is that irrelevant with the pump being defective? i even drop the car cold(i started the engine and drove) within 10mins it began to overheat, but the fans did not turn on. is it just the pump? the fan switch is new, no fuses are blown. the radiator and fans are less than 2 yrs old. 2000 jetta
- You should've noticed the worn out tires before u even stepped foot in the car. Go to any tire shop and get new tires, they will balance them when installing the new ones and that will take care of the vibrating. As for the water pump going out, I agree that that shouldn't have happened at 27k
- Q: I am planning to build a koi fish pond, and I know I need a water pump. All I know is that a water pump will circulates water. Does it do anything else? does it act like a filter? does it provide aeration or oxygen to the pond?
- Yup yur absolutley correct. It aerates the water, and circulates the water to prevent surface algae that can cloud your water and make it unsightly. A water pump is definitley a nesesity when it comes to artificial koi ponds. Hope this helps!
- Q: here is the problem with my water pump control switch settings. the water is being used, runs dry and stays off for sometimes 3 minutes or so.i realize the springs control the cut in and cut out. do i need to make the spring more compressed to make the pump come on sooner? or do i need to make the spring looser to make the switch come on sooner?when i read/hear about adjusting the cut in. the answers seem vague because i do not know the perspecitve of the spring.does compressing the spring make the swith flip easier? or does compressing the spring make the switch harder to flip on?i installed a new 30/50 switch today. My air tank was at 50 or so PSI. but i dropped it to about 30. is the goeal to make the entire full system 50 pounds? because after my pump cycles i get about 70 psi!!!
- The problem lies with the new 30/50 switch. With Your pressure tank empty of water, set the air pressure at 28psi. What is happening is when the water pressure drops below about 45 psi - the air pressure (50psi) on the bladder is forcing the water out rapidly. Then the pump has to work like cracy to overcome that bladder pressure! Easy Fix. Make sure the tank has no water in it.
- Q: the pump inlet how hard is this to replace i know the timing chain cover has to be removed and is this the propable place of the leak
- You can't fix it. Wanna' know why? You are here.
- Q: Could my problem be greater than a water pump or thermostat?
- Well first of all thermostates don't make leaks, -- unless they don't open, in which case boiling makes water run out! And of course it could be waterpump, it could also be radiator hoses, and radiator itself, as well as heater hoses, and heater core! In extreme case it could even be head gasket going bad! (But defiantely it will be under the hood!) You just have to check things out an see where it is coming from! Waterpump has a weep hole underneath main housing, -- if it is dripping from there,- the seal in WP is bad. But rest of things should be easy to see if you look carefully! If you have very much water leaking get it fixed quickly, and keep it full, and watch temperature carefully, if it starts overheating shut down engine quickly! If you drive overheated you WILL blow head gasket, and if going even further- too hot, it will expire engine! This is very expensive!
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Multistage Single Suction Centrifugal Pump DG Series
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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