Aluminium Alloy Sections Air Operated Diaphragm Pump Low Pressure 1
Inch Air Diaphragm Pump
Pneumatic Mining Low Pressure Diaphragm Pump With Butterfly Valves
The pneumatic diaphragm pump is a new type of conveying equipment
and is the most
innovative pump in China. Using compressed air as the power source,
for various corrosive
liquids, liquid with particles, high viscosity, volatile,
flammable, highly toxic liquid, all of them
can be sucked up.
There are six specifications for diaphragm pumps. The inlet and
outlet dimensions are 1/4′′,
1/2′′, 3/4′′, 1′′, 1.5′′, 2′′, 3′′, 4′′, and the fluid component
materials are aluminum alloy, ductile iron,
polypropylene, stainless steel. According to different diaphragms
and to meet the needs of
different liquid medias,the diaphragms materials are nitrile
rubber, neoprene, polyethylene, three
rubber, polyether rubber, fluororubber, polytetrafluoroethylene,
and polyvinylidene fluoride.
Low Pressure Diaphragm Pump Parameters
| Item | Description | Unit | Reference Figure |
| 1 | Maximum air inlet pressure | Mpa | 0.83 |
| 2 | Maximum flow rate | 1/Min | 192 |
| 3 | Maximum lift | M | 70 |
| 4 | Maximum outlet pressure | Mpa | 0.83 |
| 5 | Maximum particle size | mm | 3 |
| 6 | Weight | kg | 12.3 |
| 7 | Noise level | db | ＜70 |
Low Pressure Diaphragm Pump Main Advantages
1, Due to the use of air power, the flow automatically changed
according to export resistance. Which is suitable for high
viscosity fluid.
2, In inflammable and explosive environment, the pump is reliable
and low cost, won't produce spark and not overheat,
3, The pump volume is small, easy to move, no foundation needed,
convenient installation and economy. Can be used as mobile
conveying pump.
4, Where there are dangers, corrosive materials processing,
diaphragm pump can be separated completely with outside.
5, The pump shearing force is low, physical effect to medium is
small, can be used for conveying unstable chemistry fluid.
The working principle of the pneumatic diaphragm pump: in the two
symmetric working
chambers of the diaphragm pump, each is equipped with a flexible
diaphragm. The connecting rod
connects the two diaphragms into one body, and the compressed air
enters the intermediate body
from the inlet joint of the pump and pushes the diaphragm in the
two working chambers and
drives the diaphragms of the connecting rods to move synchronously.
At the same time, the gas in
the other working chamber exits the pump from the back of its
diaphragm. When the piston
reaches the end of the stroke, the valve mechanism automatically
draws the compressed air into
another chamber, pushing the diaphragm pump to move in the opposite
direction, thus forming a
synchronous reciprocating motion of the two diaphragms. Two one-way
ball valves are arranged
in each working chamber, and the reciprocating motion of the
diaphragm causes a change in the
inner volume of the working chamber, forcing the two one-way ball
valves to alternately open and
close, thereby continuously inhaling and discharging the liquid.
The most obvious difference between pneumatic diaphragm pumps and
other diaphragm
pumps is the distributing valve structure. The pneumatic diaphragm
pump valve structure cancels
the distributing valve of traditional "O" ring and cylindrical
valve structure. Three - way pilot is
adopted to eliminate valve dead point and pump shutdown phenomenon.
Providing proper and
reliable reversing signals to avoid downtime and faster reversing
for greater pump flow, providing
delivery performance for smaller pulses and more stable flow.
The pneumatic diaphragm pump uses a simple and highly reliable air
reversing valve to
ensure no downtime to avoid costly shutdown costs. All air valve
components can be replaced
without disassembling the part of fluid. The aluminum parts are
specially treated to resist
corrosion from dirty air. The plastic material of sliding block in
the reversing valve is strong and
Troubleshooting guidance
1.Air outlet has fluid when pumping
Check if the diaphragm be damaged
Check if the diaphragm bolts loosening
2.The output fluid has bubble
Check the suction pipe joints are well sealed
Check the suction pipe and fluid inlet are well sealed
Check the ring between fluid inlet and fluid cap are with O-ring
Check the diaphragm bolts are fastened
3.Pumping capacity is low
Check if the air supply is stable
Check whether the inlet and outlet is blocked
Check the joint to the fluid inlet is sealed and not leakage
Check if the ball stick to the ball seat or ball seat is not
suitable
4. Without reciprocating motion, the air flow is discharged from
the exhaust port
Check the sealed ring of the main air valve
Check the sealed ring of the pilot rod valve
Check the sealed ring of the diaphragm rod
