German ARO pump ARO model ARO price

ARO pumps use a diaphragm to separate the liquid being transported from the plunger and pump cylinder, thereby protecting the plunger and pump cylinder. The parts of the left side of the diaphragm that come into contact with the liquid are made of corrosion-resistant materials or coated with a layer of corrosion-resistant substance; the right side of the diaphragm is filled with water or oil.

ARO pump system structure

Diaphragm pumps are a main type of actuator. They change fluid flow by accepting control signals output from the regulation and control unit and using power operation. The role of the diaphragm pump in the control process is to accept control signals from the regulator or computer, change the flow rate of the controlled medium, and maintain the controlled parameters within the required range, thereby achieving automation of the production process. If the automatic regulation system is compared with the manual regulation process, the detection unit is the human eye, the regulation and control unit is the human brain, and the execution unit—the diaphragm pump—is the human hands and feet. To achieve regulation and control of certain parameters in the process, such as temperature, pressure, flow rate, and liquid level, diaphragm pumps are indispensable. Pneumatic diaphragm pumps commonly use five materials: plastic, aluminum alloy, cast iron, stainless steel, and Teflon. Electric diaphragm pumps use four of these materials: plastic, aluminum alloy, cast iron, and stainless steel. Diaphragm pump diaphragms use nitrile rubber, neoprene rubber, fluororubber, polytetrafluoroethylene, polyhexafluoroethylene, etc., depending on the liquid medium, for installation in various special occasions to pump various media to meet requirements.

ARO pump conveyed media

1) Pumping peanut butter, pickles, mashed potatoes, small sausages, jam, apple puree, chocolate, etc. 2) Pumping paint, gum, pigments. 3) Adhesives and glues; all types can be pumped. 4) Various tile, porcelain, brick, and ceramic glaze slurries. 5) After oil wells are drilled, pumping sediment and grout. 6) Pumping various emulsifiers and fillers. 7) Pumping various sewage. 8) Using the pump to clean tanks of oil tankers and barges by sucking out sewage from the tanks. 9) Hops and yeast thin slurry, syrup, molasses. 10) Pumping accumulated water in mines, pits, tunnels, mineral processing, and slag. 11) Pumping cement grout and mortar, various rubber slurries. 12) Various abrasives, corrosives, oil and mud, cleaning oil stains and general containers. 13) Various highly toxic, flammable, and volatile liquids. 14) Various strong acids, strong alkalis, and highly corrosive liquids. 15) Various high-temperature liquids, with maximum resistance up to 150 degrees. 16) Serving as the pre-stage pressure supply device for various solid-liquid separation equipment.

ARO pump application advantages

The diaphragm pump is a new type of conveying machinery that can transport various corrosive liquids, liquids with particles, high-viscosity, volatile, flammable, and highly toxic liquids. Diaphragm pumps come in four materials: plastic, aluminum alloy, cast iron, and stainless steel. Diaphragm pumps use nitrile rubber, neoprene rubber, fluororubber, polytetrafluoroethylene, and polyhexafluoroethylene respectively according to different liquid media to meet the needs of different users. Installed in various special occasions to pump media that conventional pumps cannot handle, they have achieved satisfactory results. In the painting and ceramics industries, diaphragm pumps occupy an absolutely dominant position. The advantages of pneumatic diaphragm pumps are: 1) Since air is used as the power source, the flow rate automatically adjusts with changes in back pressure (outlet resistance), making it suitable for medium to high viscosity fluids. The operating point of a centrifugal pump is set based on water; if used for slightly higher viscosity fluids, it requires a gearbox or variable frequency drive, which greatly increases costs. The same applies to gear pumps. 2) In flammable and explosive environments, pneumatic pumps are reliable and low-cost, such as for transporting fuel, gunpowder, and explosives, because: first, no sparks can be generated after grounding; second, no heat is generated during operation, so the machine does not overheat; third, the fluid does not overheat because the diaphragm pump causes minimal agitation of the fluid. 3) In harsh construction sites, such as construction sites and industrial wastewater discharge, where sewage contains many impurities and complex components, pipes are prone to clogging, causing excessive load on electric pumps, leading to motor overheating and damage. Pneumatic diaphragm pumps can pass particles and have adjustable flow rates; they automatically stop when the pipe is blocked and resume when clear. 4) Can be used to transport chemically unstable fluids, such as photosensitive materials and flocculants. This is because the shear force of the diaphragm pump is low, causing minimal physical impact on the material. 5) In the handling of hazardous and corrosive materials, the diaphragm pump can completely isolate the material from the outside environment. 6) Or ensure no impurity contamination of raw materials in some tests. In addition, the diaphragm pump is small, easy to move, requires no foundation, occupies very little floor space, and is simple and economical to install. It can serve as a mobile material transfer pump.

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