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 | one.seven-11 |
Precautions
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
(one)
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.
Troubleshooting
Difficulty |
Triggers |
Treatment |
starting up load also large |
one. CZPTting with no closing discharge valve |
one. Shut the valve |
Packing overheating |
1.Packing too restricted |
1. Loose packing correctly |
Packing leakage too much |
one. Packing worn |
1. Exchange packing |
CZPT seal leakage |
1. The nominal force of mechanical seal reduce than genuine work strain |
one. Modify the type of mechanical seal |
Bearings in excess of heating |
1.Poor centering |
1. Readjust |
Vibration and noisy |
1. Unique doing work point B is not style pointnot design point minimal or large will cause vibration and noisy |
1. Modify program particular operating stage or pump layout parameters |
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 |
one. Clear impeller, thoroughly clean impurity of strainer and suction piping |