Horizontal Centrifugal Split Casing Pump with Motor

Horizontal Centrifugal Split Casing Pump with Motor

Horizontal centrifugal split casing pump with motor

Horizontal centrifugal break up casing pump product Introduction

Horizontal centrifugal break up casing pump is a new era of large effectiveness one phase double suction centrifugal pumps which mainly utilized in delivering liquids of the h2o plant, air conditioner circulation water, heating pipe community program, building water provide, irrigation and drainage of pump stations, energy crops, industrial h2o provide program, fireplace battling method, transport market and mine. It is a new substitute of SH, S, SA, SLA and SAP.

Principal performance parameters

Diameter of pump outlet: DN80 to DN900
Pump Capacity: Q: 22-16236m3/h
Pump elevate head variety: H:7-300m
Pump operating strain: P≤5Mpa
Pump working temperature: T-20-200deg C
Pump working voltage: 380V to 10000V, 50Hz & 60Hz

Pump Supporting Plan and Companies

We value the energy saving and environmental protection,by analyzing the needs of media and operation atmosphere,undertake optional mixtures of supplies at the parts contact with media,insure security,reliability,cost-effective procedure.

CZPT Drawings

Structural Attributes

Centrifugal horizontal split case pump function stably with significantly less noise and vibration,may possibly be effectively operate at elevating speed due to limited spacing among the two side supports,thus they can widely utilized. Inlet and outlet at the very same line,the 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 function at boosting speed thanks to short spacing among each side assist, which make the pumps can be broadly used. The XS pumps adopt the way of center assist, thicken the pump casing, and use cooling seals and oil lubrication bearing which make XS pump suited working at 200ºC,especially for offer heating web technique. XS variety pumps can be vertically  or horizontally mounted according to diverse working issue, with mechanical seals or packing seals.

Functionality Information

Type Potential (m³/h) Head (m) Pace (r/min) shaft electricity (kw) Motor electrical power (kw) EFF(%) NPSH(m)
XS model 22-16236 7-300 2900/1450/985/485 two.nine-3737 5.5-4000 68-ninety two 1.7-eleven


one. Inspection before commencing

Be certain to check out the followings:

(one) Insure pump plate fastened on foundation

(two) Insure coupling and pump unit alignment

(3) Insure piping connected by requirements

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

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

(six) Insure the coupling guard installed

(7) Insure the operator fully realize the protection specification that they need to obey and the failures could be occurred

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

(9) Insure the shaft seal put in by procedure instruction

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

(11) nsure the bearing have lubricated effectively, specifically insure new pump grease or thin oil do not decrease or go undesirable

(twelve) Insure the air trapped in pump escaped.


2. Shaft Seal

Open valves effectively for stuffing box seal


3. Air exhaust

Pump and piping need to fill of medium ahead of commencing, there are two techniques: generation of vacuum or priming. If the pump operated on the suction condition, exit gasoline by bolt gap on prime of the pump casing.

Notice: When development of vacuum, evacuate air by bolt gap on best of the pump casing. When priming, open up equally facet minimal pressure volute chamber of pump casing and the leading plug, to get rid of pump vibration by remained air in pump.


4. CZPTting

(one) Close outlet valve

(2) Open inlet valve fully

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

(4) CZPTting pump after ending over processes

(5) When the technique commencing produce medium and the strain reading at pressure gauge increase up, open up outlet valve gradually.

Be aware: Forbid pump running with out liquid! Only close outlet valve when the pump start and shutdown, otherwise will hurt the pump by overheating.


five. Procedure


Validate operating position


According to Q-H overall performance curve of pump, capability Q may differ with the genuine procedure head. The head depended on the technique head (which includes the altitude big difference in between inlet and outlet, piping, valves, radiator and so on). So the pump truly functioning stage B is dependent on pump performance

curve Q-H and system efficiency curve Q-HA.

When capacity settled, the shaft electricity, performance, NPSH settled as properly. Pump has minimal working range. The minimum ability are revealed as Qmin in Q-H performance curve. Highest capability are depended on the cross point of pump tolerance NPSH and program valid NPSHA. Change valve can adjust functionality curve Q-HA of program, thereby alter procedure efficiency, makes pump procedure secure and high performance.

(2) Procedure management

Need to spend interest to followings:

a. Pump ought to perform stably

b. Forbid pump running with out liquid

c. To prevent medium temperature rise up, pump can not be run extended interval when near outlet valve

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

procedure temperature less than 100ºC.

e. Check oil level routinely if use thin oil. Deep groove ball bearing of grease lubrication no want schedule routine maintenance.

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

g. Periodical inspection and start off jury pump.

h. Check auxiliary piping no matter whether linked well.

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

j. For stuffing box seal there need to have a slight drip when managing, thrust stuffing box gland gently until finally there is a slight drip (about fifteen-thirty fall/min ).

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

starting up handful of hours. If the seal leakage increase gradually and get to about 30-60drop/min, should examine or adjust mechanical seal.


6. Shutdown

Near discharge valve.

Insure the pump unit cease efficiently when shutdown the motor. Pump must have a proper right after-working period of time, cut warmth resource at this time, so that the delivered medium can cool down fully and stay away from of creating any heat inside of pump.

Close suction valve if pump cease operate for a long period of time of time.

Near auxiliary piping, the shaft seal need to use seal lubricant even even though at stopped state. Evacuate all medium in pump and piping when freeze or stop work for a extended-time period, so as not to frost crack.


7. Storage

Every pump has inspected strictly before shipping and delivery. Recommend to adopt pursuing methods to store pump.

(one) Retailer new pump

If keep pump at indoor, clear dry place and stick to the storage requirements, the longest storage time is 12 months.

(2) If products is to be saved for prolonged intervals of time need to comply with below techniques.

a. Pump need to keep in set up condition and examine perform problem frequently. CZPTt pump as soon as every thirty day period or every single a few months (about 5 minutes). Check running problem prior to starting up pump to insure there is ample liquid.

b. Dismantled pump from piping and examine it according to section 5.one to five.4. Apply protective agent on within pump casing particularly the gap of the impeller, utilize on suction and discharge, then cover the suction.

c. Operation right after storage

Inspect and maintain totally before starting up pump, especially shaft seal and bearing lubricant. Reinstall all protection safety gadgets in accordance to need ahead of beginning.




Leads to


starting up load as well large

1. CZPTting without closing discharge valve
two. packing way too limited direct to lubricant drinking water can not circulation into
3. Misguide by failing of overcurrent protector

one. Near the valve
2. Unfastened packing or verify the valve of water seal, check if packing ring against the nozzle of lubricant drinking water,
three. Change current restricting threshold or mend overcurrent protector.

Packing overheating

1.Packing  too tight
two.CZPT h2o can not movement into packing box
3. Injury in the floor of shaft or shaft sleeve

1. Loose packing correctly
two.Loose packing or examine if the h2o seal pipe clogged
3.Fix shaft or shaft sleeve

Packing leakage too much

1. Packing worn
2. Packing way too loose
3. Shaft curved or vibration
four. Wrong packing bind
5. Unclean seal h2o wore shaft
six. Shaft sleeve worn
7. Incorrect packing
8.The force of seal chamber way too substantial or also reduced

one. Change packing
2. Tighten packing box gland or insert a lot more packing
three.Align or substitute shaft
4. Rebind packing
5.Filtrate or use exterior resource as seal h2o, mend
6.Exchange shaft sleeve
seven.Replace packing
8. Alter the strain and capacity of seal liquid or use a sealing liquid from an exterior source.

CZPT seal leakage

one. The nominal strain of mechanical seal reduce than true operate pressure
two.Unreasonable reduction of CZPT seal mounting,friction factors not make contact with powerful
3. The rust of shaft sleeve area lead to rotating seal ring of mechanical seal sealing failure
four. The sent medium actual physical and chemical property leads to O-ring loss elasticity
5. The sent medium bodily and chemical property leads to spring mechanical seal of reduction elasticity
 6. Impurity enter friction parts and damaged their area
seven. The liquid of friction elements volatilize that result in their floor burning-out

one. Modify the kind of mechanical seal
2. Reinstall
three. Clear shaft sleeve or alter their content
four. Adjust material
5. Substitute or change materials
six. Filtrate or use exterior resource as rinsing water
seven. Adjust rinsing medium or evaluate

Bearings above heating

1.Poor centering
two.Inappropriate adjustment or resonance in piping
3.Overlarge .axial power
4.Unbalance rotor
five. The rigidity of basis not sufficient
6. Incorrect bearing set up or incorrect clearance
7. Wore or loosened shaft
8. Inappropriate lubrication
9. Oil splash ring can not get oil
ten. Poor circulation in strain lube

one. Readjust
2.Readjustreduce piping if necessary use vibration-absorptive materialcheck and restore
3. Verify and adjust unique operating pointcheck capacity and operating state
four. Rebalance
five.CZPTen the rigidity of foundation
six. Examine and choose bearing with properclearance
7. Examine and replace bearing
eight. Check out the volume of oil first, as well a lot or so minor will impact procedure, then verify the high quality of oil, especially relevant temperature
9.Check and eliminate, the brings about of can not get oil may possibly associated with oil quality, speed,wore of oil splash ring and oil circulation
ten. Check out the program of pressure lube

Vibration and noisy

1. Particular working level B is not design and style pointnot layout position low or high will lead to vibration and noisy
2. Insecure foundation
3.Loosened anchor bolt
4.Insecure piping supports
five.Piping resonance
7. Air cell in medium or piping leakage
8.clogged inlet or outlet of impeller
9. Incorrect centering
ten. Unbalanced pump rotor or motor rotor
eleven.Worn coupling pin or unhealthy coupling link
twelve. Worn bearing
13. Shaft curved
14. Friction in rotating aspects
15.Loosened or broken rotating components

one. Alter program unique functioning position or pump style parameters
two. CZPTen basis
3. Tighten anchor bolt
four. CZPTen piping supports
5. Expanding the distance between pump discharge and elbow, use vibration-absorptive materials in piping link, adjust piping preparations
6. Rise water degree, reduce suction line reduction, boost suction strain by utilizing inlet throttle valveimprove pump cavitations efficiency
7. Examine and eliminate, insert discharge valve
8. Clear impeller, clean impurity of pump and piping, check strainer and suction nozzle
9. Recentering
11. Replace pin, rotate coupling 180°, eradicate mistake of pin  hole, modify the unit to insure there is a required clearance in coupling
twelve. Mend or replace bearing
13. Align or substitute shaft
14. Get rid of friction
15. Eliminate, change worn components

water assault

Air in pump or piping

Evacuate air and eradicate the causes

Pump begins pumping then stops

1. Clogged in suction line or impeller
two.  Air  cell in piping
three. Lift way too large  (valid NPSH as well low)
four. Air enter shaft seal
five. Drinking water degree lessen as well much

1. Clean impeller, cleanse impurity of strainer and suction piping
two. Improve suction line, change piping preparations, add discharge valve
3. Increase entrance strain, boost suction force by utilizing inlet throttle valve low the peak of pump set up modify suction line if too a lot line loss
4. Check out pressure and sum of seal liquid if they are suited functioning needs, replace packing or other shaft seal, verify the mounting position of water seal ring
5. Rise the least expensive h2o stage, improve entrance force, increase   suction   pressure by using   inlet   throttle   valve


Horizontal Centrifugal Split Casing Pump with Motor