Sap High Efficiency Circulating Water Pump

Sap High Efficiency Circulating Water Pump

SAP higher efficiency circulating drinking water  pump

Item Introduction

SAP pump is a one-stage double-suction split scenario centrifugal pump. It is a new solution building from SA-pump on the basis of structural optimum design and style. The products reserve the attributes of SA sort pump of excellent hydraulic overall performance, substantial performance, as well as manufactured a new advancement in framework comprehending the engineering of West German KSB company and double-suction pump of CZPT States IR business, make it much more affordable and trustworthy.


This group transfer department water containing strong particle and liquid physics chemical homes comparable to h2o, transferred media temperature are 0ºC~80ºC, ideal factory, city, mining, energy era, drinking water methods engineering, drainage or drinking water offer pump.

Primary overall performance parameters

Diameter of pump outlet: DN100 to DN900
Pump Capability: Q: 72-2000 m3/h
Pump raise head assortment: H:7-186m
Pump functioning temperature: T -80deg C
Pump functioning voltage: 380V to 10000V, 50Hz & 60Hz

Pump Supporting Plan and Solutions

We value the vitality conserving and environmental protection,by analyzing the needs of media and operation surroundings,undertake optional combinations of supplies at the areas contact with media,insure safety,reliability,economical operation.

CZPT Drawings

Structural Characteristics


1,The inlet and outlet of this variety pump the two under the pump axis, they are vertical to axis and in horizontal orientation. Sustain without needing to eliminate inlet, outlet of pipes and electric powered motor. Hunting from driving instructions SAP-type pumps are counter clockwise route.(According to consumer requirements can also be transformed to clockwise)

Main Components of pump:Reduce CasingUpper CasingImpellerShaftDouble Suction Seal RingShaft Sleeve….and so on..

two,In addition to shafts are created of good quality carbon metal, the remaining major elements are made of forged iron.

3,The impeller working chamber is composed of pump entire body and the pump include. The spiral holes for installing the vacuum gauge and force gauge find at the inlet flange and the outlet flange .At the base of the inlet and outlet flange have drain spiral gap.(According to buyer needs making use of stainless steel shaft and bronze impeller)

four,The impeller adjusted by static balancing is fixed on the shaft by the shaft sleeves and the nuts.For the axial pressure of the impeller, it can be well balanced by symmetrical distribution of the impeller and the each sides ingestion water .

5,The pump shaft is supported by single row radial ball bearings. The bearing is set up at the bearing physique which fitted on the two ends of the pump casing.

6,The double suction seal ring is employed to decrease water leakage from the pump force chamber movement again to the suction chamber.

seven,The pump is driven by the motor by means of the flexible coupling.(It also can be pushed by diesel motor if needed)

The shaft seal is soft packing or mechanical seal, the packing ring is mounted before packing in purchase to avoid air from moving into pump, cooling and lubricating seal chamber. While the pump procedure, a little quantity of higher pressure water flow into the packing or mechanical seals chamber by way of the ladder-shaped groove on the horizontally break up encounter of the pump go over, which perform as h2o seal.

Efficiency Information

Type Capacity (m³/h) Head (m) Pace (r/min) shaft power (kw) Motor electricity (kw) EFF(%) NPSH(m)
SAP design seventy two-2000 7-186 2900/1450/985/485 seven.4-1403 eleven-1600 68-ninety two


1. Inspection ahead of commencing

Be certain to check out the followings:

(1) Insure pump plate set on foundation

(2) Insure coupling and pump device alignment

(3) Insure piping related by needs

(4) Insure motor set up by Set up and procedure instruction

(5) Insure the rotor of pump rotate easily (at minimum a circle)

(6) Insure the coupling guard mounted

(7) Insure the operator completely realize the safety specification that they need to obey and the failures may be occurred

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

(nine) Insure the shaft seal mounted by operation instruction

(10) Insure the auxiliary unit set up by procedure instruction (If they exist)

(11) nsure the bearing have lubricated effectively, especially insure new pump grease or slim oil do not reduce or go poor

(12) Insure the air trapped in pump escaped.


2. Shaft Seal

Open up valves correctly for stuffing box seal


3. Air exhaust

Pump and piping need to fill of medium just before commencing, there are two techniques: creation of vacuum or priming. If the pump operated on the suction point out, exit gas by bolt hole on top of the pump casing.

Be aware: When development of vacuum, evacuate air by bolt gap on top of the pump casing. When priming, open up each aspect lower stress volute chamber of pump casing and the top plug, to get rid of pump vibration by remained air in pump.


4. CZPTting

(1) Close outlet valve

(2) Open up inlet valve completely

(three) Open all auxiliary piping (cooling, heating, sealing, rinsing and lubricant liquid), and check out all capability and stress

(4) CZPTting pump after ending over processes

(five) When the program starting up provide medium and the pressure looking through at strain gauge increase up, open up outlet valve little by little.

Observe: Forbid pump operating with out liquid! Only close outlet valve when the pump start and shutdown, in any other case will injury the pump by overheating.


five. Procedure


Confirm working level


In accordance to Q-H overall performance curve of pump, capability Q may differ with the genuine operation head. The head depended on the technique head (including the altitude distinction amongst inlet and outlet, piping, valves, radiator and so on). So the pump actually working point B depends on pump functionality

curve Q-H and technique performance curve Q-HA.

After capacity settled, the shaft power, performance, NPSH settled as nicely. Pump has limited doing work assortment. The least capacity are shown as Qmin in Q-H overall performance curve. Maximum capacity are depended on the cross position of pump tolerance NPSH and technique valid NPSHA. Alter valve can alter efficiency curve Q-HA of program, therefore adjust procedure functionality, can make pump procedure stable and substantial efficiency.

(two) Procedure management

Should pay focus to followings:

a. Pump should function stably

b. Forbid pump running without having liquid

c. To stop medium temperature increase up, pump can not be operate lengthy period of time when shut outlet valve

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

operation temperature much less than 100ºC.

e. Examine oil amount routinely if use slender oil. Deep groove ball bearing of grease lubrication no require program routine maintenance.

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

g. Periodical inspection and commence jury pump.

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

i. Examine elastic component of coupling, if worn change right away.

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

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

beginning number of several hours. If the seal leakage enhance steadily and reach about thirty-60drop/min, should check or modify mechanical seal.


six. Shutdown

Shut discharge valve.

Insure the pump unit quit easily when shutdown the motor. Pump should have a appropriate soon after-operating period, lower heat supply at this time, so that the shipped medium can awesome down totally and keep away from of generating any warmth inside of pump.

Shut suction valve if pump quit function for a lengthy period of time of time.

Near auxiliary piping, the shaft seal need to use seal lubricant even even though at stopped condition. Evacuate all medium in pump and piping when freeze or cease work for a lengthy-expression, so as not to frost crack.


7. Storage

Every pump has inspected strictly just before supply. Recommend to undertake subsequent methods to retailer pump.

(one) Keep new pump

If store pump at indoor, clean dry location and follow the storage specifications, the longest storage time is twelve months.

(2) If products is to be saved for prolonged intervals of time ought to comply with beneath processes.

a. Pump need to keep in installation state and examine work issue often. CZPTt pump once each month or every single three months (about 5 minutes). Check running situation prior to commencing pump to insure there is sufficient liquid.

b. Dismantled pump from piping and verify it according to part 5.1 to five.4. Use protective agent on within pump casing specifically the hole of the impeller, apply on suction and discharge, then include the suction.

c. Procedure following storage

Examine and maintain totally just before commencing pump, specifically shaft seal and bearing lubricant. Reinstall all protection safety products in accordance to requirement just before beginning.






starting up load also large

one. CZPTting with no closing discharge valve
two. packing as well limited direct to lubricant drinking water can not movement into
three. Misguide by failing of overcurrent protector

one. Shut the valve
two. Unfastened packing or check the valve of drinking water seal, check out if packing ring in opposition to the nozzle of lubricant drinking water,
3. Change existing limiting threshold or repair overcurrent protector.

Packing overheating

1.Packing  too restricted
2.CZPT h2o can not movement into packing box
3. Harm in the floor of shaft or shaft sleeve

1. Loose packing correctly
2.Free packing or check if the h2o seal pipe clogged
three.Repair shaft or shaft sleeve

Packing leakage too much

one. Packing worn
two. Packing as well unfastened
three. Shaft curved or vibration
4. Mistaken packing bind
5. Unclean seal h2o wore shaft
six. Shaft sleeve worn
seven. Wrong packing
eight.The strain of seal chamber too substantial or as well reduced

1. Exchange packing
two. Tighten packing box gland or insert a lot more packing
three.Align or substitute shaft
four. Rebind packing
five.Filtrate or use exterior source as seal drinking water, restore
six.Replace shaft sleeve
seven.Replace packing
eight. Adjust the pressure and ability of seal liquid or use a sealing liquid from an external source.

CZPT seal leakage

1. The nominal force of mechanical seal reduce than genuine work strain
2.Unreasonable reduction of CZPT seal mounting,friction parts not speak to powerful
three. The rust of shaft sleeve area cause rotating seal ring of mechanical seal sealing failure
4. The shipped medium actual physical and chemical residence brings about O-ring decline elasticity
5. The delivered medium physical and chemical house causes spring mechanical seal of loss elasticity
 6. Impurity enter friction components and damaged their floor
seven. The liquid of friction elements volatilize that trigger their surface area burning-out

one. Modify the type of mechanical seal
2. Reinstall
three. Clear shaft sleeve or alter their material
four. Modify materials
five. Change or modify substance
six. Filtrate or use exterior supply as rinsing drinking water
7. Adjust rinsing medium or evaluate

Bearings in excess of heating

1.Poor centering
2.Poor adjustment or resonance in piping
three.Overlarge .axial power
four.Unbalance rotor
five. The rigidity of foundation not ample
6. Incorrect bearing installation or incorrect clearance
7. Wore or loosened shaft
eight. Improper lubrication
nine. Oil splash ring can not get oil
10. Poor circulation in strain lube

1. Readjust
two.Readjustreduce piping if essential use vibration-absorptive materialcheck and fix
three. Examine and adjust unique working pointcheck capacity and working condition
4. Rebalance
five.CZPTen the rigidity of basis
six. Check and decide on bearing with properclearance
7. Check and substitute bearing
8. Verify the sum of oil 1st, way too a lot or so minor will influence operation, then examine the good quality of oil, especially relevant temperature
9.Verify and eradicate, the causes of can not get oil might associated with oil quality, pace,wore of oil splash ring and oil circulation
10. Check out the method of strain lube

Vibration and noisy

1. Unique doing work point B is not style pointnot design point minimal or large will cause vibration and noisy
2. Insecure basis
three.Loosened anchor bolt
4.Insecure piping supports
5.Piping resonance
7. Air mobile in medium or piping leakage
8.clogged inlet or outlet of impeller
9. Incorrect centering
ten. Unbalanced pump rotor or motor rotor
11.Worn coupling pin or harmful coupling connection
12. Worn bearing
13. Shaft curved
fourteen. Friction in rotating components
15.Loosened or broken rotating elements

1. Modify program particular operating stage or pump layout parameters
two. CZPTen foundation
three. Tighten anchor bolt
4. CZPTen piping supports
five. Expanding the length in between pump discharge and elbow, use vibration-absorptive substance in piping connection, change piping preparations
6. Increase water stage, lessen suction line loss, enhance suction stress by using inlet throttle valveimprove pump cavitations efficiency
seven. Verify and remove, incorporate discharge valve
8. Clear impeller, cleanse impurity of pump and piping, check out strainer and suction nozzle
9. Recentering
11. Exchange pin, rotate coupling 180°, eliminate mistake of pin  hole, alter the device to insure there is a needed clearance in coupling
twelve. Repair or exchange bearing
13. Align or replace shaft
14. Get rid of friction
15. Remove, change worn components

drinking water attack

Air in pump or piping

Evacuate air and get rid of the causes

Pump begins pumping then stops

1. Clogged in suction line or impeller
2.  Air  cell in piping
three. Raise also higher  (legitimate NPSH too reduced)
four. Air enter shaft seal
five. Water stage lower also much

one. Clear impeller, thoroughly clean impurity of strainer and suction piping
2. Boost suction line, change piping preparations, include discharge valve
3. Enhance entrance pressure, increase suction pressure by utilizing inlet throttle valve low the top of pump installation modify suction line if too a lot line decline
4. Check out force and quantity of seal liquid if they are suited functioning needs, replace packing or other shaft seal, verify the mounting place of drinking water seal ring
5. Increase the cheapest drinking water amount, enhance entrance pressure, enhance   suction   pressure by utilizing   inlet   throttle   valve


Sap High Efficiency Circulating Water Pump