Product Description
Pneumatic diaphragm pump is a new type of conveying equipment, which uses compressed air as the power source. It can be used for all kinds of ultra-low temperature liquids, corrosive liquids, liquids with particles, high viscosity, volatile, flammable, and highly toxic liquids, which can all be exhausted.
Working Principle
In the two symmetrical working chambers of the diaphragm pump, each is equipped with an elastic diaphragm, and the connecting rod integrates the two diaphragms into one. After the compressed air enters the air valve chamber from the intake joint of the pump, it pushes the diaphragms of the two working chambers and drives the diaphragms connected by the connecting rods to move synchronously. At the same time, the gas in the other working chamber is discharged out of the pump from the back of its diaphragm. When the piston reaches the end of the stroke, the valve mechanism will automatically introduce compressed air into the other working chamber, and push the diaphragm pump to move in the reverse direction, which forms a synchronous reciprocating movement of the two diaphragms. Two one-way ball valves are set in each working chamber. The reciprocating movement of the diaphragm causes the internal volume of the working chamber to change. As the two one-way ball valves alternately open and close, continuous suction and discharge of liquid will happen.
Product Parameters
| Low temperature pneumatic diaphragm pump |
| Model |
LQF-1 |
LQF-3 |
LQF-7 |
LQF-22 |
LFQ-34 |
LFQ-62 |
| Maximum flow (t/h) |
1 |
3 |
7 |
22 |
34 |
62 |
| Maximum lift (m) |
70 |
70 |
84 |
84 |
84 |
84 |
| Maximum suction (m) |
4 |
4.5 |
5.48 |
5.48 |
5.48 |
7.6 |
| Outlet pressure (Mpa) |
0.7 |
0.7 |
0.84 |
0.84 |
0.84 |
8.4 |
| Conveying medium temperature (ºC) |
-80 ~ 150 |
| Particle diameter (mm) |
1.5 |
2.5 |
3.2 |
6.4 |
6.4 |
9.4 |
| Caliber (mm) |
15 |
20 |
25 |
40 |
50 |
80 |
| Inlet caliber (in) |
43834 |
43834 |
43832 |
43832 |
43832 |
43894 |
| Air consumption (m3/min) |
0.36 |
0.36 |
0.67 |
0.9 |
1.5-2 |
43894 |
| Air compressor recommendation (kw) |
3 |
3 |
5.5 |
7.5 |
44150 |
22 |
Product Details
Product Applications
1.Chemical industry: acids, alkalis, solvents, suspended solids, dispersion systems.
2.Petrochemical industry: crude oil, heavy oil, grease, mud, sludge, etc.
3.Coating industry: resin, solvent, colorant, paint, etc.
4.Daily chemical industry: detergent, shampoo, lotion, cream, hand cream, surfactant.
5.Ceramic industry: mud slurry, pottery slurry, lime slurry, clay slurry.
6.Mining industry: coal slurry, magma, mud, mortar, explosive slurry, lubricating oil, etc.
7.Water treatment: lime slurry, soft sediment, sewage, chemicals, wastewater.
8.Food industry: liquid semi-solid, chocolate, brine, vinegar, syrup, vegetable oil, soybean oil,honey, animal blood.
9.Beverage industry: yeast, syrup, concentrate, gas-liquid mixture, wine, fruit juice, etc.
10.Pharmaceutical industry: solvents, acids, alkalis, plant extracts, ointments, plasma and other pharmaceutical liquids.
11.Paper industry: binders, resins, paints, inks, pigments, hydrogen peroxide, etc.
12.Electronics industry: solvents, electroplating solutions, cleaning solutions, sulfuric acid, nitric acid, waste acids, corrosive acids.
13.Textile industry: dye chemicals, resins, glues, etc.
14.Construction industry: cement slurry, ceramic tile binder, rock slurry, ceiling paint, etc.
15.Automotive industry: polishing emulsion, oil, coolant, automotive primer, oil emulsion paint, varnish, additives,degreasing fluid, paint, etc.
16.Furniture industry: adhesives, varnishes, dispersion systems, solvents, colorants, white wood glue, epoxy resin,starch binder.
17.Metallurgy, casting and dyeing industry: metal slurry, hydroxide and carbide slurry, dust washing slurry, etc.
Corollary Equipment
1. Stainless steel tank, used for feeding and discharging
Q: Why does the air operated diaphragm pump not have a power cord?
This is a device that uses compressed air as a power source and does not require direct power connection.
Q: What should I do if the pulse is very strong when the liquid of the air operated diaphragm pump circulates?
Under normal circumstances, there is a pulse, if you need to eliminate the pulse, you can choose a pulse damper.
Q: Can the pneumatic diaphragm pump suck in and discharge low-temperature ethanol at -80°C?
Yes. All parts exposed to low-temperature ethanol are made of low-temperature-resistant stainless steel and PTFE.
Q: Can the diaphragm pump work when there is pressure in the inlet?
No, there are four ball valves and ball seats on the upper and lower covers of the diaphragm pump. When the inlet is under pressure, the ball cannot fall back and produce suction.
Q: Can the equipment be OEM?
Yes.
Our Service
Pre-Sale Service
- Provide 24-hour technical consultation and reply;
- Provide professional quotation information;
- Provide detailed product performance specification;
- According to product's using condition, technicians will offer rationalization proposals to assist clients to select proper product types;
- Provide other corollary equipment according to client requirements.
In-Sale Service
- With supervision from the source of products, the qualified rate of raw materials entering the factory can reach 100%;
- Whole manufacturing process are in strict accordance with promised procedure requirements, product qualified rate can reach 100%;
- Provide product's inspection record of key junctures to customers;
- Provide production schedule photos to customers at regular intervals;
- Package and transport of products are in strict accordance with the export standard;
- Provide transportation schedule information to clients timely.
After-Sale Service
- Provide targeted installation video;
- Under the premise of correct installation, normal maintenance and using, we guarantee one-year warranty period;
- When warranty period has expired, our sold products enjoys lifetime guarantee repair, we only charge cost price for changing product's standard component and sealing component;
- During installation and adjustment period, our after-sale service staff will communicate with customers frequently to know product's running state in time. Assist customers to install and adjust products until customers are satisfied;
- If product has malfunction during operation period, we'll offer you satisfied answer in time. We'll reply you within 1 hour and provide solution or send staff to spot within 24 hours after receiving maintenance notification;
- Lifelong free technical support. Conduct satisfaction survey and inquiry equipment running condition to clients by telephone or e-mail semiannually from the first day of equipment running, put on records of acquired information;
- Provide assistance in solving problems such as equipment damage in the transport.
Audited Supplier 
){kind=link}
){kind=link}