Split Case Water Pump and Motor

Split Case Water Pump and Motor


break up case water pump and motor

break up case  pump product Introduction

Break up case pump is a new technology of high performance solitary stage double suction centrifugal pumps which mainly utilized in delivering liquids of the water plant, air conditioner circulation water, heating pipe community technique, creating h2o source, irrigation and drainage of pump stations, power plants, industrial h2o offer method, fire battling system, transport business and mine.

Principal functionality parameters

Diameter of pump outlet: DN80 to DN900
Pump Ability: Q: 22-16236m3/h
Pump raise head selection: H:seven-300m
Pump working pressure: P≤5Mpa
Pump operating temperature: T-20-200deg C
Pump functioning voltage: 380V to 10000V, 50Hz & 60Hz

Pump Supporting System and Providers

We price the power saving and environmental safety,by analyzing the needs of media and operation setting,adopt optional mixtures of resources at the elements make contact with with media,insure stability,reliability,affordable operation.

CZPT Drawings

Structural Features

Split circumstance pump work stably with significantly less sounds and vibration,could be correctly function at boosting pace owing to brief spacing amongst each aspect supports,therefore they can widely employed. Inlet and outlet at the very same line,the identical rotor of the XS pumps can be operated in reverse route,the XS pumps operates stably with less noise and vibration and can perform at increasing speed because of to limited spacing amongst equally facet assistance, which make the pumps can be widely utilized. The XS pumps adopt the way of center help, thicken the pump casing, and use cooling seals and oil lubrication bearing which make XS pump appropriate operating at 200ºC,especially for provide heating internet method. XS type pumps can be vertically  or horizontally mounted according to different working situation, with mechanical seals or packing seals.

Overall performance Data

Type Capability (m³/h) CZPT (m) Velocity (r/min) shaft electrical power (kw) Motor electrical power (kw) EFF(%) NPSH(m)
XS product 22-16236 seven-three hundred 2900/1450/985/485 2.9-3737 5.5-4000 68-ninety two 1.seven-11

Safety measures

1. Inspection prior to commencing

Be positive to verify the followings:

(one) Insure pump plate mounted on basis

(two) Insure coupling and pump unit alignment

(3) Insure piping related by demands

(4) Insure motor set up by Installation and operation instruction

(5) Insure the rotor of pump rotate effortlessly (at least a circle)

(six) Insure the coupling guard mounted

(seven) Insure the operator fully understand the safety specification that they must obey and the failures may be transpired

(eight) Insure the shaft seal liquid or cooling liquid direct-in by specifications

(nine) Insure the shaft seal set up by procedure instruction

(10) Insure the auxiliary device mounted by operation instruction (If they exist)

(11) nsure the bearing have lubricated well, particularly insure new pump grease or slender oil do not minimize or go negative

(twelve) Insure the air trapped in pump escaped.


two. Shaft Seal

Open up valves appropriately for stuffing box seal


3. Air exhaust

Pump and piping need to fill of medium before commencing, there are two methods: generation of vacuum or priming. If the pump operated on the suction point out, exit gas by bolt gap on best of the pump casing.

Note: When creation of vacuum, evacuate air by bolt hole on leading of the pump casing. When priming, open up each facet low force volute chamber of pump casing and the leading plug, to get rid of pump vibration by remained air in pump.


four. CZPTting

(1) Shut outlet valve

(2) Open inlet valve completely

(three) Open up all auxiliary piping (cooling, heating, sealing, rinsing and lubricant liquid), and examine all potential and force

(4) CZPTting pump right after finishing previously mentioned methods

(five) When the method starting supply medium and the strain reading at pressure gauge rise up, open up outlet valve slowly and gradually.

Be aware: Forbid pump functioning CZPT liquid! Only shut outlet valve when the pump start and shutdown, in any other case will harm the pump by overheating.


five. Procedure


Affirm running stage


According to Q-H efficiency curve of pump, capability Q differs with the real procedure head. The head depended on the technique head (including the altitude distinction among inlet and outlet, piping, valves, radiator and so on). So the pump really running point B relies upon on pump performance

curve Q-H and system overall performance curve Q-HA.

Once potential settled, the shaft power, performance, NPSH settled as well. Pump has minimal operating assortment. The bare minimum ability are proven as Qmin in Q-H performance curve. Highest ability are depended on the cross level of pump tolerance NPSH and system legitimate NPSHA. Modify valve can adjust overall performance curve Q-HA of program, thereby adjust procedure efficiency, helps make pump operation steady and substantial effectiveness.

(two) Operation management

Should shell out consideration to followings:

a. Pump must operate stably

b. Forbid pump working CZPT liquid

c. To avert medium temperature increase up, pump can not be run long period when close outlet valve

d. CZPTly, the bearing temperature not larger than 35ºC of ambient temperature, absolute

procedure temperature significantly less than 100ºC.

e. Check out oil degree often if use slim oil. Deep groove ball bearing of grease lubrication no need regimen upkeep.

f. Do not near inlet valve (if it is exist) when pump working.

g. Periodical inspection and begin jury pump.

h. Check out auxiliary piping whether connected nicely.

i. Verify elastic element of coupling, if worn change quickly.

j. For stuffing box seal there should have a slight drip when managing, thrust stuffing box gland carefully right up until there is a slight drip (about fifteen-30 drop/min ).

For mechanical seal the seal leakage need to lessen steadily. It is about -5drop/min soon after

starting up few several hours. If the seal leakage boost progressively and achieve about thirty-60drop/min, need to verify or modify mechanical seal.


6. Shutdown

Shut discharge valve.

Insure the pump unit quit smoothly when shutdown the motor. Pump need to have a correct following-operating time period, cut warmth source at this time, so that the sent medium can amazing down totally and avoid of producing any heat inside of pump.

Close suction valve if pump end operate for a lengthy period of time of time.

Shut auxiliary piping, the shaft seal must use seal lubricant even though at stopped condition. Evacuate all medium in pump and piping when freeze or stop perform for a extended-term, so as not to frost crack.


seven. Storage

CZPTy pump has inspected strictly just before shipping and delivery. CZPTmmend to adopt following processes to store pump.

(1) Keep new pump

If store pump at indoor, cleanse dry place and stick to the storage needs, the longest storage time is 12 months.

(two) If gear is to be saved for long intervals of time should follow under processes.

a. Pump should keep in installation condition and inspect perform situation routinely. CZPTt pump as soon as every month or each a few months (about five minutes). Check out managing situation prior to starting up pump to insure there is adequate liquid.

b. Dismantled pump from piping and verify it according to part five.1 to 5.4. Utilize protective agent on within pump casing especially the hole of the impeller, implement on suction and discharge, then protect the suction.

c. Operation following storage

Examine and maintain totally just before commencing pump, especially shaft seal and bearing lubricant. Reinstall all security defense devices according to necessity ahead of beginning.






starting load way too high

1. CZPTting CZPT closing discharge valve
two. packing way too restricted guide to lubricant drinking water can not stream into
3. Misguide by failing of overcurrent protector

one. Near the valve
two. Unfastened packing or examine the valve of h2o seal, check out if packing ring against the nozzle of lubricant water,
three. Adjust current limiting threshold or mend overcurrent protector.

Packing overheating

one.Packing  too restricted
2.Cooling h2o can not movement into packing box
3. Damage in the floor of shaft or shaft sleeve

one. Loose packing appropriately
two.Free packing or examine if the water seal pipe clogged
3.Fix shaft or shaft sleeve

Packing leakage abnormal

one. Packing worn
2. Packing also loose
3. Shaft curved or vibration
4. Improper packing bind
five. Unclean seal drinking water wore shaft
6. Shaft sleeve worn
7. Improper packing
8.The strain of seal chamber way too high or way too lower

1. Substitute packing
two. Tighten packing box gland or insert more packing
3.Align or substitute shaft
4. Rebind packing
5.Filtrate or use exterior supply as seal water, repair
6.Exchange shaft sleeve
seven.Substitute packing
eight. Modify the stress and capacity of seal liquid or use a sealing liquid from an exterior supply.

Mechanical seal leakage

1. The nominal stress of mechanical seal reduce than true work strain
2.Unreasonable reduction of Mechanical seal mounting,friction elements not contact successful
three. The rust of shaft sleeve floor lead to rotating seal ring of mechanical seal sealing failure
4. The sent medium actual physical and chemical home triggers O-ring loss elasticity
five. The delivered medium bodily and chemical home brings about spring mechanical seal of reduction elasticity
 6. Impurity enter friction components and broken their area
7. The liquid of friction parts volatilize that cause their surface area burning-out

1. Change the type of mechanical seal
2. Reinstall
3. Clean shaft sleeve or modify their material
4. Adjust material
5. Substitute or change content
6. Filtrate or use exterior source as rinsing h2o
7. Modify rinsing medium or measure

CZPTs above heating

1.Inappropriate centering
2.Incorrect adjustment or resonance in piping
3.Overlarge .axial power
4.Unbalance rotor
5. The rigidity of basis not adequate
six. Incorrect bearing set up or improper clearance
7. Wore or loosened shaft
8. Incorrect lubrication
9. Oil splash ring can not get oil
10. Poor circulation in stress lube

1. Readjust
two.Readjustreduce piping if essential use vibration-absorptive materialcheck and restore
3. Check and modify particular operating pointcheck capability and working point out
4. Rebalance
five.Reinforce the rigidity of basis
six. Check and pick bearing with properclearance
seven. Verify and substitute bearing
eight. Examine the amount of oil 1st, way too a lot or so little will influence procedure, then examine the top quality of oil, specially applicable temperature
9.Verify and eradicate, the leads to of can not get oil might associated with oil good quality, speed,wore of oil splash ring and oil circulation
10. Check out the technique of force lube

Vibration and noisy

one. Particular functioning point B is not style pointnot layout level lower or high will result in vibration and noisy
two. Insecure foundation
three.Loosened anchor bolt
four.Insecure piping supports
five.Piping resonance
7. Air cell in medium or piping leakage
8.clogged inlet or outlet of impeller
nine. Poor centering
ten. Unbalanced pump rotor or motor rotor
eleven.Worn coupling pin or unhealthy coupling connection
12. Worn bearing
13. Shaft curved
14. Friction in rotating aspects
fifteen.Loosened or broken rotating aspects

one. Change program special working stage or pump layout parameters
two. Reinforce basis
3. Tighten anchor bolt
4. Strengthen piping supports
five. Increasing the length in between pump discharge and elbow, use vibration-absorptive content in piping relationship, adjust piping preparations
six. Increase h2o stage, minimize suction line reduction, boost suction stress by using inlet throttle valveimprove pump cavitations performance
7. Examine and remove, incorporate discharge valve
8. Clear impeller, clean impurity of pump and piping, check strainer and suction nozzle
nine. Recentering
eleven. Replace pin, rotate coupling 180°, eradicate mistake of pin  hole, modify the unit to insure there is a required clearance in coupling
12. Mend or substitute bearing
thirteen. Align or replace shaft
14. Remove friction
fifteen. Eradicate, exchange worn elements

water attack

Air in pump or piping

Evacuate air and remove the brings about

Pump begins pumping then stops

one. Clogged in suction line or impeller
two.  Air  cell in piping
three. Elevate too higher  (legitimate NPSH too lower)
four. Air enter shaft seal
five. Drinking water level decrease as well much

one. Thoroughly clean impeller, cleanse impurity of strainer and suction piping
two. Increase suction line, alter piping preparations, insert discharge valve
3. Boost entrance stress, improve suction force by making use of inlet throttle valve reduced the peak of pump installation adjust suction line if as well much line decline
4. Check out pressure and volume of seal liquid if they are suitable functioning specifications, substitute packing or other shaft seal, check the mounting place of h2o seal ring
5. Increase the cheapest h2o amount, enhance entrance pressure, improve   suction   pressure by utilizing   inlet   throttle   valve


Split Case Water Pump and Motor


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