Horizontal Split Case Centrifugal Pump Manufacturers

Horizontal Split Case Centrifugal Pump Manufacturers

Horizontal split scenario centrifugal pump

Horizontal split case centrifugal pump merchandise Introduction

Horizontal break up scenario centrifugal pump is a new era of higher effectiveness solitary stage double suction centrifugal pumps which mostly utilised in delivering liquids of the h2o plant, air conditioner circulation h2o, heating pipe network method, constructing drinking water provide, irrigation and drainage of pump stations, electrical power plants, industrial h2o source system, fire preventing program, shipping and delivery sector and mine. It is a new substitute of SH, S, SA, SLA and SAP.

Major overall performance parameters

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

Pump Supporting Program and Providers

We benefit the vitality saving and environmental defense,by examining the specifications of media and procedure atmosphere,adopt optional combos of supplies at the elements make contact with with media,insure protection,dependability,affordable operation.

CZPT Drawings

Structural Characteristics

Centrifugal horizontal break up scenario pump operate stably with much less noise and vibration,might be correctly operate at elevating speed because of to quick spacing in between both side supports,hence they can widely utilised. Inlet and outlet at the very same line,the very same rotor of the XS pumps can be operated in reverse route,the XS pumps operates stably with much less sounds and vibration and can operate at raising pace because of to short spacing between both aspect support, which make the pumps can be commonly utilised. The XS pumps adopt the way of middle help, thicken the pump casing, and use cooling seals and oil lubrication bearing which make XS pump suited doing work at 200ºC,especially for provide heating internet method. XS kind pumps can be vertically  or horizontally mounted according to diverse working condition, with mechanical seals or packing seals.

Overall performance Information

Type Capacity (m³/h) Head (m) Speed (r/min) shaft power (kw) Motor power (kw) EFF(%) NPSH(m)
XS model 22-16236 seven-three hundred 2900/1450/985/485 2.9-3737 5.five-4000 sixty eight-ninety two 1.seven-11


one. Inspection ahead of starting

Be sure to check out the followings:

(one) Insure pump plate fixed on basis

(2) Insure coupling and pump device alignment

(3) Insure piping linked by demands

(four) Insure motor set up by Set up and operation instruction

(five) Insure the rotor of pump rotate easily (at least a circle)

(six) Insure the coupling guard set up

(seven) Insure the operator completely recognize the protection specification that they must obey and the failures could be happened

(8) Insure the shaft seal liquid or cooling liquid guide-in by needs

(9) Insure the shaft seal mounted by procedure instruction

(ten) Insure the auxiliary gadget installed by operation instruction (If they exist)

(11) nsure the bearing have lubricated well, particularly insure new pump grease or slim oil do not decrease or go undesirable

(12) Insure the air trapped in pump escaped.


two. Shaft Seal

Open valves appropriately for stuffing box seal


3. Air exhaust

Pump and piping must fill of medium ahead of commencing, there are two techniques: generation of vacuum or priming. If the pump operated on the suction state, exit gas by bolt gap on leading of the pump casing.

Notice: When generation of vacuum, evacuate air by bolt gap on prime of the pump casing. When priming, open the two side lower pressure volute chamber of pump casing and the leading plug, to get rid of pump vibration by remained air in pump.


4. Starting

(one) Near outlet valve

(two) Open inlet valve totally

(3) Open up all auxiliary piping (cooling, heating, sealing, rinsing and lubricant liquid), and check all capacity and force

(4) Starting pump right after ending over procedures

(5) When the method starting up provide medium and the pressure looking through at strain gauge increase up, open outlet valve slowly and gradually.

Notice: Forbid pump working with out liquid! Only near outlet valve when the pump begin and shutdown, or else will injury the pump by overheating.


5. Operation


Confirm working stage


In accordance to Q-H efficiency curve of pump, capability Q differs with the actual procedure head. The head depended on the program head (like the altitude distinction between inlet and outlet, piping, valves, radiator and so on). So the pump really running position B is dependent on pump functionality

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

After capability settled, the shaft energy, performance, NPSH settled as well. Pump has minimal functioning assortment. The least capability are proven as Qmin in Q-H efficiency curve. Optimum capacity are depended on the cross level of pump tolerance NPSH and technique legitimate NPSHA. Adjust valve can adjust overall performance curve Q-HA of technique, thus change operation overall performance, makes pump procedure secure and large efficiency.

(2) Operation administration

Ought to pay consideration to followings:

a. Pump must perform stably

b. Forbid pump functioning with out liquid

c. To avert medium temperature rise up, pump can not be operate lengthy interval when near outlet valve

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

operation temperature less than 100ºC.

e. Verify oil stage regularly if use slender oil. Deep groove ball bearing of grease lubrication no need to have program upkeep.

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

g. Periodical inspection and begin jury pump.

h. Check out auxiliary piping whether or not related well.

i. Check elastic element of coupling, if worn substitute right away.

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

For mechanical seal the seal leakage need to reduce gradually. It is about -5drop/min after

starting up few hrs. If the seal leakage boost gradually and reach about thirty-60drop/min, need to examine or alter mechanical seal.


six. Shutdown

Close discharge valve.

Insure the pump device stop effortlessly when shutdown the motor. Pump need to have a appropriate soon after-managing period of time, cut heat source at this time, so that the sent medium can great down fully and keep away from of making any heat inside pump.

Shut suction valve if pump quit function for a prolonged interval of time.

Near auxiliary piping, the shaft seal need to use seal lubricant even although at stopped point out. Evacuate all medium in pump and piping when freeze or cease perform for a extended-phrase, so as not to frost crack.


seven. Storage

Each and every pump has inspected strictly just before delivery. Advocate to undertake adhering to procedures to shop pump.

(one) Store new pump

If retailer pump at indoor, thoroughly clean dry spot and stick to the storage needs, the longest storage time is 12 months.

(2) If gear is to be stored for prolonged durations of time must stick to beneath procedures.

a. Pump ought to preserve in installation state and examine perform situation frequently. Start pump when each month or each and every a few months (about five minutes). Examine managing situation prior to commencing pump to insure there is enough liquid.

b. Dismantled pump from piping and examine it in accordance to area five.one to five.four. Apply protective agent on inside of pump casing specifically the gap of the impeller, utilize on suction and discharge, then protect the suction.

c. Procedure right after storage

Examine and keep completely before beginning pump, especially shaft seal and bearing lubricant. Reinstall all safety defense gadgets in accordance to need prior to starting up.




Leads to


commencing load also large

1. Starting up with out closing discharge valve
2. packing as well limited guide to lubricant h2o can not movement into
three. Misguide by failing of overcurrent protector

1. Shut the valve
two. Loose packing or examine the valve of water seal, verify if packing ring against the nozzle of lubricant water,
3. Modify recent limiting threshold or fix overcurrent protector.

Packing overheating

one.Packing  too limited
two.CZPT water can not flow into packing box
three. Injury in the surface area of shaft or shaft sleeve

1. Free packing appropriately
two.Free packing or verify if the h2o seal pipe clogged
three.Repair shaft or shaft sleeve

Packing leakage too much

one. Packing worn
2. Packing way too unfastened
3. Shaft curved or vibration
4. Wrong packing bind
five. Unclean seal drinking water wore shaft
6. Shaft sleeve worn
seven. Improper packing
8.The stress of seal chamber as well higher or too reduced

one. Substitute packing
two. Tighten packing box gland or include far more packing
three.Align or exchange shaft
four. Rebind packing
5.Filtrate or use exterior source as seal water, fix
6.Change shaft sleeve
seven.Exchange packing
8. Alter the strain and capacity of seal liquid or use a sealing liquid from an external supply.

CZPT seal leakage

one. The nominal stress of mechanical seal reduced than real operate stress
2.Unreasonable reduction of CZPT seal mounting,friction factors not contact effective
three. The rust of shaft sleeve surface area lead to rotating seal ring of mechanical seal sealing failure
four. The sent medium actual physical and chemical property causes O-ring loss elasticity
five. The shipped medium actual physical and chemical residence brings about spring mechanical seal of loss elasticity
 6. Impurity enter friction factors and damaged their area
seven. The liquid of friction components volatilize that cause their surface burning-out

1. Change the variety of mechanical seal
2. Reinstall
3. Thoroughly clean shaft sleeve or adjust their content
4. Adjust materials
5. Substitute or alter materials
six. Filtrate or use exterior supply as rinsing h2o
seven. Adjust rinsing medium or measure

Bearings over heating

1.Inappropriate centering
two.Improper adjustment or resonance in piping
three.Overlarge .axial drive
4.Unbalance rotor
five. The rigidity of foundation not sufficient
6. Incorrect bearing set up or poor clearance
7. Wore or loosened shaft
eight. Improper lubrication
nine. Oil splash ring can not get oil
10. Poor circulation in force lube

1. Readjust
two.Readjustreduce piping if required use vibration-absorptive materialcheck and mend
3. Check and alter special working pointcheck capacity and working state
four. Rebalance
5.Bolster the rigidity of foundation
six. Examine and pick bearing with properclearance
7. Verify and replace bearing
eight. Examine the sum of oil initial, way too significantly or so little will have an effect on procedure, then check the high quality of oil, specifically relevant temperature
9.Verify and eliminate, the triggers of can not get oil may associated with oil top quality, velocity,wore of oil splash ring and oil circulation
10. Check the program of strain lube

Vibration and noisy

one. Unique doing work position B is not layout pointnot style level reduced or substantial will cause vibration and noisy
two. Insecure basis
three.Loosened anchor bolt
4.Insecure piping supports
five.Piping resonance
7. Air cell in medium or piping leakage
eight.clogged inlet or outlet of impeller
nine. Inappropriate centering
10. Unbalanced pump rotor or motor rotor
eleven.Worn coupling pin or harmful coupling relationship
twelve. Worn bearing
13. Shaft curved
fourteen. Friction in rotating elements
15.Loosened or damaged rotating factors

1. Alter system special operating level or pump design parameters
2. Improve basis
3. Tighten anchor bolt
four. Improve piping supports
5. Increasing the distance amongst pump discharge and elbow, use vibration-absorptive substance in piping link, alter piping arrangements
6. Rise h2o degree, decrease suction line decline, boost suction stress by utilizing inlet throttle valveimprove pump cavitations overall performance
seven. Check and remove, incorporate discharge valve
8. Thoroughly clean impeller, cleanse impurity of pump and piping, verify strainer and suction nozzle
nine. Recentering
11. Exchange pin, rotate coupling 180°, get rid of error of pin  hole, modify the device to insure there is a required clearance in coupling
12. Fix or change bearing
thirteen. Align or replace shaft
fourteen. Eliminate friction
fifteen. Remove, substitute worn parts

drinking water assault

Air in pump or piping

Evacuate air and remove the leads to

Pump starts pumping then stops

one. Clogged in suction line or impeller
2.  Air  cell in piping
3. Raise also substantial  (valid NPSH as well reduced)
four. Air enter shaft seal
5. Water level lessen also a lot

1. Clean impeller, clean impurity of strainer and suction piping
two. Increase suction line, change piping preparations, incorporate discharge valve
three. Boost entrance strain, increase suction strain by utilizing inlet throttle valve minimal the top of pump set up modify suction line if also considerably line decline
4. Check out strain and amount of seal liquid if they are suited operating demands, change packing or other shaft seal, check the mounting situation of drinking water seal ring
5. Increase the lowest h2o stage, boost entrance force, enhance   suction   pressure by making use of   inlet   throttle   valve


Horizontal Split Case Centrifugal Pump Manufacturers


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