|
The
diaphragm pump has been developed for handling corrosive liquids
and those containing suspensions of abrasive solids. It is in
two sections separated by a diaphragam. In one section a piston
or plunger operates in a cylinder in which a non-corrosive fluid
is displaced. The movement of the fluid is transmitted by means
of flexible diaphragm to the liquid are the valves, and these
can be specially designed to handle the materials. In some cases
the movement of the diaphragm may be air actuated.
Simple and robust crank mechanism / Spring-return mehanical diaphragm
pump, Low cost due to reduced number of components, Use mechanically-actuated
diaphragm to combine the characteristics of a plunger pump (linear
flow rate) with the sealing advantages of a diaphragm pump, Suitable
for batching operation, Minimum maintenance required.
|
Model
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
H
|
|
DP1
|
350
|
250
|
100
|
140
|
120
|
170
|
225
|
275
|
|
DP2
|
450
|
350
|
110
|
160
|
170
|
225
|
280
|
325
|
|
DP3
|
550
|
450
|
130
|
180
|
200
|
260
|
330
|
425
|
|
DP45
|
725
|
625
|
145
|
210
|
220
|
325
|
390
|
525
|
|
DP60
|
825
|
725
|
195
|
260
|
240
|
410
|
425
|
650
|
|
DP75
|
1000
|
800
|
215
|
280
|
265
|
475
|
450
|
675
|
|
DP90
|
1300
|
1100
|
235
|
300
|
290
|
525
|
490
|
725
|
|
DP100
|
1400
|
1200
|
255
|
320
|
315
|
550
|
525
|
800
|
|
DP110
|
1500
|
1300
|
265
|
330
|
330
|
575
|
560
|
825
|
|
DP125
|
1700
|
1500
|
285
|
350
|
360
|
600
|
610
|
875
|
|
|
 |
Hydraulic
actuated diaphragm head. A double PTFE diaphragm hermetically
separates the wetted area from the hydraulic chamber. During
the discharge stroke the diaphragm is balanced by the hydraulic
liquid only. During the suction stroke the diaphragm operation
is aided by the mechanical coupling. This combined principle
offers an extraordinary suction lift capability of the pump.
|
|
Model
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
H
|
|
DP1
|
350
|
250
|
100
|
140
|
185
|
170
|
140
|
275
|
|
DP2
|
450
|
350
|
110
|
160
|
220
|
225
|
240
|
325
|
|
DP3
|
550
|
450
|
130
|
180
|
240
|
260
|
270
|
425
|
|
DP45
|
725
|
625
|
145
|
210
|
260
|
325
|
330
|
525
|
|
DP60
|
825
|
725
|
195
|
260
|
300
|
410
|
360
|
650
|
|
DP75
|
1000
|
800
|
215
|
280
|
330
|
475
|
450
|
675
|
|
DP90
|
1300
|
1100
|
235
|
300
|
375
|
525
|
525
|
725
|
|
DP100
|
1400
|
1200
|
255
|
320
|
400
|
550
|
575
|
800
|
|
DP110
|
1500
|
1300
|
265
|
330
|
410
|
575
|
625
|
825
|
|
DP125
|
1700
|
1500
|
285
|
350
|
425
|
600
|
675
|
875
|
A single diaphragm separates the wetted area from the hydraulic
chamber. During the discharge stroke the diaphragm is balanced
by the hydraulic liquid only.
When the liquid being is highly corrosive, the backup diaphragm
will keep the liquid out of pump body in the primary diaphragm,
allowing the diaphragm to be replaced before the pump is damaged
It's two identical diaphragms mounted together and operating as
one piece. Since either diaphragm is capable of full pump performance,
each is the backup of the other. Should one fail, operation continues
without interruption on the other, there is no leakage or air
sucked into the process and no mixing of the process fluid with
the hydraulic oil. A pressure gauge reading between the diaphragms
monitors the diaphragm conditions, no pressure indicates the diaphragms
are okay while pressure indicates that the pump is operated on
one diaphragm.
"Sandwich" diaphragms have very long live years even
in continuous operation.
 |
 |
For
diaphragm pump discharge pressures to 20 kg/cm2 (300psi) |
|
Pneumatic
and electric stroke length control available, automatic capacity
control in response to standard 4-20MA process signal. |
|
Explosion
proof motors available suitable for use in hazardous atmospheres. |
|
Lowflowrates
accurate, reliable chemical feed. |
|
Accuracy
± 2%. |
 |
|
Standard pump models selection considering Viscosity, vapor
pressure, Specific gravity. |
|
Piping
layout (Acceleration losses & NPSHR) |
|
Computer
aided design (CAD) for general Assembly. |
 |
|
Flow
rate |
|
Power
consumption |
|
Pressure
test |
 |
|
Basic
intermediate and finished products, petrochemical and pharmaceuticals
industries. |
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Machine
building, mining, metal processing, filling and extraction
technology |
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Crude
oil, natural gas, coal, nuclear power. |
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Raw
materials, liquid products, dairy products, pasta, baked goods,
sweet tobacco |
|
Paper,
cellulose, textiles, leather, synthetic, fibers or material,
building materials, cleaners and detergent, film, tapes |
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Water
treatment, air cleaning, disposal techniques |
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Dialysis,
stored blood. |
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