SLZ SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
CONTENTS
010102030408090306
10388283
84858587
The low-noise centrifugal pumps are new products made t-hrough a long-term development and according to the require-ment to the noise in the environmental protection of the new century and, as their main feature, the motor uses water-coo-ling instead of the air-cooling,which reduces the energy loss of the pump and the noise, really an en vi ronmental p rotectione - nergy-saving p roducto f n ew generation.
The r ange of performance of t he l ow-noise pump i s the s-ame as that of model SLS and SLW available in this Co. and they are all developed per ISO2858.It includes four kinds:
Model SLZ vertical low-noise pump;
Model SLZW horizontal low-noise pump;
Model SLZD vertical low-speed low-noise pump;
Model SLZWD horizontal low-speed low-noise pump; F or S LZ a nd S LZW,the rotating s peed is 2 950rpm and,of
3
the range of performance,the flow 300m /h and the head 150m.
For SLZD and S LZWD, the rot at ing spe ed is1480rpm and 3980rpm,the flow 1500m /h,the head 80m. These pumps are used t o t ransport pure water and the liqu-ids of the physical and chemical natures similar to pure water o with the medium temperature under 95C cowgirl measure and other if adoption h eat the b earings electricale ngineeringu se
o
paint lines,and the H class insulate the grade,can attain 150C and suitable for industrial and city water supply boost w ater s upply for high buildings air-conditioning warming,fighting, circulated boost and so on.
The a perture o f the p um p is availab le fro m 40m mto 500mm,extensively meeting with v arious d emands. To f urther save energy and close t o t he actual r unning co-ndition,the outer diameter of the impeller of the pumps of each specification may be cut per the actual running condition(with A,B,C shown next to the model).
As of t he voltage,those motors l ess t han 1.1kwa re 220-380V and those more than 1.1kw are all 380V .
SLS
SLW
ISO2858
SLZ SLZW SLZD SLZWD SLZ SLZW 2950r/min,
3<300m /h;
<150m
SLZD SLZWD
1480r/min 980r/min;
3
<1500m /h;
<80m 95150
40mm 500mm
A B C
<1.1KW
220~380V
>1.1KW
380V
MODEL MEANING
SLZWD-horizontal low-speed low-noise pump
pump
GENERAL ACCOUNT
SLZ SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
FEATURES OF STRUCTURE
5~20
5%~10%
IS
NPSH r
One of the noise sources of the electric centrifugal pump c-
omes from the air-cooling system of the motor, to which, this
Co. changes the way of cooling into water one through a long-
term study and, as a result, the noise has been greatly lowered,
in addition, a measure to lower the noise is used on the hydrau-
lic design and new requirements are also set to the manufacture
precisio n and the bearing choice, thus further reducing the run-
ning noise of the pump assembly.
More noise reduction can also be made available by using
the low-speed low-niose pump of this Co.for the users such as
hospitals, hotels, business buildings of high-grade where a m-
ore peaceful working environment is required.
The pump assembly's noise can be the complex action of th-
ese measures, lowered by 5-20dB.
At the same time to reduce the noise, the power loss of the
pump also gets lower than that of the ordinary ones due to free
of a blower, by 5%-10% in general.
The low-noise pump uses the coaxial structure, i.e. the im-
peller of it is mounted on the extended part of the motor's shaft,
which is supported by the bearing of the motor, There is also
the cooling water around the outer of the bearing chamber in
order to ensure the bearing to reliably work and extend its life
as well as to ensure a stable run of the pump. The said structure
can also omit the procedure to aim the pump shaft at the motor's
one during assembly and installation and enhance the effective
time of running of the pump, and, for the vertical on e, can low
the height of installation and make running more stable.
The vertical pump uses a pipeline structur e and can be dir-
ectly connected to the pipeline just like a valve, the pipeline n-
eed not to be removed during an overhaul.
The horizontal pump uses an end-suction structure which is
compact and can be used to replace IS pump.
The low-noise pump uses qualified mechanical sealings and
has gone through the running in spection before ex-works, thus
ensuring non-leak during a long time running and the cleaness
on the place where it works.
The hydraulic parts of the pump use an advanced hydraulic
model so as to get a better effect of pumping and also ensure a
beteer(NPSH)r value.
SEE THE FIGURE BELOW FOR THE STRUCTURE OF THE HORIZONTAL PUMP
WORKING CONDITION
a.0.4MPa
1.6MPa
o
b.95C
o
c.40C1000m,
95%a.The pressure at the inlet of the pump is0.4MPa and the max. working pressure is 1.6MPa.Please note it at order if one of both is surpassed in the user's system.
b.The transporting medium for the pump is the pure water
o
of a temperature below 95
C.Please note it at order if
using a medium different from the temperature or nat-
ure of that,which can be solved with the measure s this
Co.will make up.
o
c.The environmental temperature should be less than 40C,
the elev ation less than 1000m and the RH not more than
95%.
SLZ SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
SLZ Type V
ertical, SLZW Type Horizontal Low-noise Centrifugal Pump Performance Data
SLZ Type V ertical, SLZW Type Horizontal Low-noise Centrifugal Pump Performance Data SLZ
SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
SL ZD T ype Vertical, SLZWD T
ype Horizontal Low-speed Low-noise Centrifugal Performance Data
SLZ SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
SL ZD T ype Vertical, SLZWD T
ype Horizontal Low-speed Low-noise Centrifugal Performance Data
SLZ,SLZW TYPE PUMP PERFORMANCE CHART
180
150120
100
8070
60
50
4030
2520
15
1210
9H (m )
4567
891012152025304050607080100120
150
200300
3
Q (m /h )
SLZD,SLZWD TYPE PUMP PERFORMANCE CHART
SLZ
SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
3
Q (m /h )
H (m )
100
90
80
70
6050
40
30
20
151210
9
8
7
652345678910152025303540506070809010015020025030040
5 00
60080010001500
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension
PERFORMANCE
CURVE
25
2015
10
50
40
30
2010H m
0.9
0.8
0.70.60.5
P a k w 43
210
N P S H r
m
3
Q m /h
25
20
15
10
50
40
30
2010
H m
0.9
0.80.70.60.5
P a k w 43210
N P S H r
m
3
Q m /h
H m 2.52
1.510.50
P a k w 43210
N P S H r m
3
Q m /h
%
%
%DIMENSION
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension
SLZ
SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
H m 2.52
1.510.50
P a k w
4
3
210
N P S H r
m
3Q m /h
%
PERFORMANCF DA TA
DIMENSION
PERFORMANCE CURVE
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension
H
m
P a k w
43210
N P S H r
m 3
Q m /h
60
5040
30
3.5
32.52
H m
P a k w
43
21
N P S H r
m
3
Q m /h
60
5040
30
3.5
32.521.51
H m
P a k w 43210
N P S H r m
3
Q m /h
90
8070
60
7
65
43
2
%
%
%
DIMENSION
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension SLZ
SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
PERFORMANCE DA TA
PERFORMANCE CURVE
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension
H m
3
Q m /h
3
Q m /h
P a k w
4
3
210
N P S H r
m
3
Q m /h
3
21
20
10
5
%
DIMENSION
PERFORMANCE DA TA
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension
SLZ
SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
H m P a k w
43
210
N P S H r
m
3
Q m /h
3
210
%
DIMENSION
PERFORMANCE CURVE
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension
H m
3
Q m /h
60
5040
30
3
Q m /h
P a k w 43
210
N P S H r m
3
Q m /h
10
864
%
DIMENSION
PERFORMANCE DATA
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension
SLZ SLZW SERIES LOW-NOISE CENTRIFUGAL PUMP
H m
P a k w
43
21
N P S H r
m
3
Q m /h
8070
60
50
40
30
20
10
10
864
%
DIMENSION
PERFORMANCE CURVE
SLZ, SLZW Series Low-noise Centrifugal Performance Data And Dimension
H m
3
Q m /h 1510
5
3
Q m /h P a k w 43
210
N P S H r m
3
Q m /h
5
4
321
%
DIMENSION