I, Overview

The pneumatic diaphragm pump produced by our company is a new type of conveying equipment, and it is a newer type of pump in China at present. Using compressed air as the power source, for a variety of corrosive liquids, liquids with particles, viscosity of volatile, flammable, highly toxic liquids, can be pumped up and sucked out.

The company produces a total of eleven kinds of diaphragm pump specifications. Inlet and outlet sizes are 3/8“ (10mm) 1/2” (15mm), 3/4“ (20mm), 1” (25mm). 1“ (25mm), 1-1/4 (32mm) 1-1/27 (40mm), 2” (50mm), 2-1/2-(65mm), 3-1/4-(80mm), 47 (100mm), 5” (125mm), the material of the fluid components are: aluminum alloy, cast steel, ductile iron, plastic PP polypropylene, stainless steel, fluorine plastic, diaphragm according to the different diaphragms Diaphragm according to different diaphragm materials are: butyl purchase, polyethylene, three-way, Teflon, Teflon, super Teflon, etc., in order to meet the needs of different liquid media.

2,Working Principle

Working principle of pneumatic diaphragm pump: in the diaphragm pump in the two symmetrical working chamber, each equipped with a piece of elastic diaphragm, connecting rod will be two pieces of diaphragm into a single piece of compressed air from the pump inlet connector into the valve room to promote the two working chamber of the diaphragm, drive the connecting rod coupling of the diaphragm synchronized movement. At the same time, the gas in the other chamber is discharged from the back of the diaphragm. When the piston reaches the end of the stroke, the valve mechanism automatically introduces compressed air into the other working chamber, pushing the diaphragm spring toward the reverse selection, thus forming a synchronized reciprocating motion of the two diaphragms. Two one-way ball valves are set in each two chambers, the reciprocating motion of the diaphragm causes the change of the inner volume of the working chamber, with the two one-way ball valves open and close alternately, so that the liquid is continuously inhaled and discharged.

The most obvious difference between our pneumatic diaphragm pump and other diaphragm pumps lies in the valve structure. Our pneumatic diaphragm pump valve structure eliminates the traditional “0” ring and column valve structure of the valve. Adopting three-phase pilot type, eliminating the valve dead point and pump shutdown phenomenon. Provides a correct and reliable reversing signal to avoid shutdown and faster reversing, giving the pump a larger flow rate, improved delivery performance, smaller pulses and more stable flow.

Air operated diaphragm pumps are designed with a simple, highly reliable air reversing valve that ensures no downtime and avoids costly shutdowns, and all air valve components can be replaced without disassembling the flow section. Aluminum parts are specially treated to resist corrosion caused by non-hao air, the plastic slider in the reversing valve is durable and not easy to damage, no lubrication is required to ensure a smooth air path and flexible reversing.

3, the main use:

1. chemical industry

2. Petrochemical industry: acid, alkali, solvent, suspension, dispersion system. Crude oil, thick oil, moor fat, mud, sludge, etc..

3. Paint industry: resin, solvent, colorant, paint, etc.

4. Daily chemical industry

5. Ceramics industry: detergents, shampoos, lotions, creams, hand creams, surface activators. Mud slurry, ceramic slurry, lime slurry, clay slurry.

6. Mining industry: coal slurry, rock slurry, mud slurry, sand slurry, explosives slurry, tear slide oil, etc.

7. Water treatment: lime slurry, soft sediment, sewage, chemicals, waste water.

8,Food industry

19. Beverage industry: liquid semi-solid, chocolate, brine, vinegar, syrup, vegetable oil, soybean oil, honey, animal blood.

Yeast, syrups, concentrates, gas-liquid mixtures, wines, juices, etc.

10. Pharmaceutical industry

11. Paper industry

12. Electronic industry: solvents, acids, alkalis, plant extracts, ointments, plasma and other various pharmaceutical materials. Adhesives, resins, paints, inks, pigments, hydrogen peroxide and so on.

13. Textile industry: solvents, plating solution, cleaning solution, sulfuric acid, nitric acid, waste acid, corrosive acid. Dye chemicals, resin, glue, etc.

14. Construction industry

15, automotive industry: cement paste, ceramic tile bonding agent, rock slurry, ceiling paint, etc.. Polishing emulsion, oil, coolant, automobile fatigue paint, oil emulsion paint, clear drops, additives, degreasing liquid, paint, etc..

16. Furniture industry: binder, varnish, dispersion system, solvent, colorant, white wood glue, epoxy resin, starch binder.

17. Metallurgy, casting and dyeing industry, metal slurry, hydroxide and carbide dishes, dust washing slurry, etc.

4, performance profile
Pneumatic diaphragm case can not only pump the flowing liquid, but also can transport some not easy to flow the media, with self-priming pumps, submersible pumps, screen pumps and impurity pumps and other conveying machinery, many advantages.1, do not need to stagnant water, suction range can be as high as 7m, the head can be up to 70m, the export pressure of 0.84Mpa.
2, flow spacious, through the performance is good, allowing through the largest particle diameter of 9.4mm, pumping slurry, impurities, the pump wear and tear is very small.
3. Lift and flow are adjusted by the pressure of air source (the pressure of air source is between 0.1-0.8Mpa).
4. Working environment range: 5-65℃, conveying medium range (-20℃-150℃) 5, the pump has no rotating parts, no shaft seal, the pumping medium with the membrane and the moving parts of the pump, the working medium is completely separated, the transported medium will not leak out of the Pu. So pumping toxic, volatile or corrosive media, will not cause environmental pollution and jeopardize personal safety 6 - does not require electricity, in flammable, explosive places to use safe and reliable
7 can be submerged in the media work
8. Easy to use, reliable, open and stop just simply open and close the gas valve, even if the white in unexpected circumstances and a long time without media operation or sudden shutdown, the pump will not be damaged. Once overloaded, the pump will automatically shut down, with self-protection performance, when the load returns to normal, and can automatically start running!
9. Simple structure, less wearing parts. Pump structure is simple, easy to install and maintain. The medium conveyed by the pump will not touch the moving parts such as valve, connecting rod, etc. Unlike other types of dishes, the performance of the pump decreases due to the wear and tear of the rotor, piston, gears, blades and other parts.
10. It can transport viscous liquid (viscosity below 10000 centipoise).
11. The pump does not need lubricating oil, even if idling on the pump does not have any effect, which is a major feature of the pump.

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