Product features of AODD PUMP plastic diaphragm pump

Product features of AODD PUMP plastic diaphragm pump:

Since air is used as power, the flow rate is automatically adjusted with the change of back pressure (outlet resistance), which is suitable for medium and high viscosity fluids. The working point of the centrifugal pump is set based on water. If it is used for a fluid with a higher viscosity, a reducer or frequency converter is required, which greatly increases the cost. The same is true for gear pumps.
It is reliable and low-cost to use pneumatic pumps in flammable and explosive environments, such as the transportation of fuel, gunpowder, and explosives, because: first, it is impossible to generate sparks after grounding; second, there is no heat generation during work, and the machine does not It will overheat; third, the fluid will not overheat because the diaphragm pump has the least agitation to the fluid.
In places with harsh construction sites, such as wastewater discharge from construction sites and industrial mines, due to the large amount of impurities and complex components in the sewage, the pipeline is easy to be blocked, which will cause excessive load on the electric pump, and the electric motor will be easily damaged due to heat. The pneumatic diaphragm pump can pass particles and has an adjustable flow rate. When the pipeline is blocked, it will automatically stop until it is unobstructed.
In addition, the diaphragm pump is small in size and easy to move, does not require foundation, occupies a very small ground, and is easy and economical to install. It can be used as a mobile material conveying pump.
In the treatment of hazardous and corrosive materials, the diaphragm pump can completely isolate the materials from the outside world.
Or ensure that no impurities contaminate the raw materials in some tests.
It can be used to transport fluids with relatively unstable chemical properties, such as photosensitive materials, flocculants, etc. This is because the shear force of the diaphragm pump is low and the physical impact on the material is small.

How to use the Air operated double diaphragm pump correctly

Air operated double diaphragm pump is a positive displacement pump that uses compressed air as the power to change the volume through the reciprocating deformation of the diaphragm. Its working principle is similar to that of a plunger pump. Pay attention to the following points when using AODD PUMP:
1. Ensure that the large particles contained in the fluid do not exceed the pump’s large safety to pass the particle diameter standard.
2. The intake pressure should not exceed the high allowable working pressure of the pump. Compressed air higher than the rated pressure may cause personal injury and property loss and damage the performance of the pump.
3. Ensure that the piping system of the diaphragm pump pressure can withstand the high output pressure reached, and ensure the cleanness and normal working conditions of the driving air system.
4. Electrostatic sparks may cause explosions, resulting in personal injury, accidents, and property losses. Use a wire with a large enough cross-sectional area as needed to properly and reliably ground the ground screw on the pump.
5. Grounding requirements comply with local laws and regulations and some special requirements on site.
6. Fasten the aodd pumps and each connecting pipe joint to prevent electrostatic sparks from being generated by vibration. Use antistatic hose.

7. To periodically check and test the reliability of the grounding system, the grounding resistance is required to be less than 100 ohms.

8. Keep good exhaust and ventilation, away from flammable, explosive and heat sources.
9. The exhaust of the diaphragm pump may contain solids. Do not point the exhaust to the working area or people to avoid personal injury.

10. When the diaphragm fails, the conveyed materials will be ejected from the exhaust muffler.
11. When transporting flammable and toxic fluids, please connect the outlet to a safe place away from the work area.

12. Please use at least 3/8″ inner diameter pipe with smooth inner wall to connect the exhaust port and the muffler.

13. The high pressure of the fluid may cause serious personal injury and property damage. Please do not perform any maintenance work on the diaphragm pump and the material pipe system when the pump is pressurized. If the rotor pump needs to be repaired, first cut off the pump inlet Open the bypass pressure relief mechanism to relieve the pressure of the pipeline system, and slowly loosen the connected pipeline joints.

14. Pumps using aluminum alloy materials for the liquid transportation part, please do not use them to transport liquids containing Fe3+, halogenated hydrocarbons and other halogenated hydrocarbon solvents, which will cause corrosion and cause the pump body to burst.

15. Ensure that all parts contacting the conveying body will not be corroded and damaged by the conveyed fluid.
16. Ensure that all operators are familiar with the operation and use of the pump and master the safety precautions for the use of the pump. If necessary, provide necessary protective equipment.

17. Use the pump correctly and do not allow long-term dry operation.

AODD PUMP — AODD pumps also called air operated diaphragm pumps, are positive displacement pumps driven and powered by compressed air rather than an electric motor.

10 advantages of Aluminum Alloy Air Operated Pneumatic Diaphragm Pump

10 advantages of Aluminum Alloy Air Operated Pneumatic Diaphragm Pump:
1. The pneumatic diaphragm pump has no rotating parts and no shaft seal. The diaphragm and the pumped medium are completely separated from the moving parts of the pump and the workpiece medium, and the conveyed medium will not leak out. Therefore, when pumping toxic, easy to play or corrosive media, it will not cause environmental pollution and endanger personal safety;
2. The flow is spacious and the passing performance is good. Allow large particles up to 10mm in diameter. When pumping mud and impurities, there is little wear on the pump;
3. The head and flow can be adjusted steplessly through the valve opening (air pressure adjustment is between 1-7 bar):
4. No need to irrigate and divert water. The suction range is up to 5m. The head reaches 50m. Outlet pressure≥6kgf/c㎡;
5. No need to use electricity. It is safe and reliable to use in flammable and explosive places;
6. Can be submerged in the medium to work:
7. Easy to use, reliable in work, just simply open and close the gas valve when starting and stopping. Even if the pump runs without medium for a long time or suddenly stops due to unexpected circumstances, the pump will not be damaged. Once overloaded, the pump will automatically stop, with self-protection performance, when the load returns to normal, it can automatically start operation;
8. Simple structure and few wearing parts. The pump has simple structure and is easy to install and maintain. The medium conveyed by the pump will not come into contact with the moving parts such as the valve, linkage, etc., unlike other types of pumps due to rotors, pistons, and gears. The performance of components such as, blades, etc. is gradually decreased:
9. It can transport more viscous liquids (viscosity below 10,000 centipoise):
10. The pneumatic diaphragm pump does not need to be lubricated with oil, even if it is idling. It also has no effect on the pump.
aodd pump manufacturers and suppliers from China.

Selection of Air Operated Double Diaphragm Pump flow and characteristics

Selection of Air Operated Double Diaphragm Pump flow and characteristics

The flow characteristics of a aodd pump refers to the relationship between the relative flow and displacement (relative opening of the valve) of the medium flowing through the valve. The ideal flow characteristics mainly include straight line, equal percentage (logarithm), parabola and quick opening. The ideal flow characteristics commonly used in curves and spool shapes are only straight line, equal percentage (logarithmic), and quick opening. The parabolic flow characteristic is between the straight line and the equal percentage, which can generally be replaced by the equal percentage characteristic, and the quick opening characteristic is mainly used for two-position adjustment and program control, so the choice of the diaphragm pump characteristic is actually the linear and equal percentage flow characteristics s Choice.
The selection of the flow characteristics of the diaphragm pump can be calculated theoretically, but the methods and equations used are very complicated. At present, empirical guidelines are mostly used, which are specifically considered from the following aspects: ①Analyze and select from the adjustment quality of the regulation system; ②Consider from the process piping situation; ③Analyze from the load change.
By selecting the flow characteristics of the diaphragm pump, the shape and structure of the valve core can be determined according to its flow characteristics. However, for diaphragm valves, butterfly valves, etc., due to their structural characteristics, it is impossible to change the curved surface shape of the valve core to achieve the desired result. The required flow characteristics can be achieved by changing the shape of the feedback cam of the valve positioner.
Air Operated Double Diaphragm Pump manufacturers and suppliers from China

Application of aodd pump in food and beverage industry

Application of aodd pump in food and beverage industry:

As a new type of liquid conveying equipment, aodd pumps have become more and more widely used in the beer, beverage, and food industries.
The pneumatic diaphragm pump powered by the air source has its unique advantages, especially the extremely low shear force on the material, and it is suitable for the transmission of various particulate materials, such as eight-treasure porridge, sauces, and pulp-containing beverages.
The self-priming start and the ability to allow idling greatly reduce the difficulty of operation, even a small amount of leftover material at the bottom of the tank can be exhausted. It does not produce electric sparks and does not overheat after working for a long time, which makes the transportation of alcohol more safe and reliable.
Small size, easy maintenance, will not pollute the working environment due to dripping, and more in line with the characteristics of safe and clean food and beverage industry.
Multi-material selection of the pump body material, food-grade flow parts, withstand temperature up to 120 ℃, to meet the different needs of various materials.

Diaphragm pump manufacturers and suppliers from China

Basic overview of Air Operated Double Diaphragm Pump

Basic overview of Air Operated Double Diaphragm Pump

Aodd pump is a new type of conveying machinery, which is a novel type of pump in China. Using compressed air as the power source, it can be used for various corrosive liquids.
The pneumatic diaphragm pump has four materials: engineering plastics, aluminum alloy, stainless steel, and alloy.
The pneumatic diaphragm pump adopts nitrile rubber, neoprene rubber, fluorine rubber, polytetrafluoroethylene, polyhexaethylene, etc. according to different liquid media to meet the needs of different users.
It is installed in various special occasions and used to pump various media that cannot be pumped by conventional pumps, and has achieved satisfactory results.

Aodd pump manufacturers and suppliers from China.

The principle of 304 Air operated double diaphragm pump

The principle of 304 Air operated double diaphragm pump:
A diaphragm is installed on the left and right sides of the aodd pump, which are connected by a central link. Compressed air enters the air distribution valve from the air inlet of the pump, and the compressed air is introduced into one cavity through the air distribution mechanism to push the diaphragm in the cavity to move, while the gas in the other cavity is discharged. Once the end of the stroke is reached, the air distribution mechanism automatically introduces compressed air into another working chamber, pushing the diaphragm to move in the opposite direction, so that the two diaphragms reciprocate continuously and synchronously. In the figure, compressed air enters the valve to move the diaphragm to the right. The suction of the chamber causes the medium to flow in from the inlet, pushing the ball valve into the chamber, and the ball valve is blocked by suction; the medium in the chamber is squeezed. Push open the ball valve to flow out from the outlet, and at the same time lock the ball valve to prevent flow, so that the medium is continuously sucked in from the inlet and discharged from the outlet.

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Correct inflation method of stainless steel Air operated double diaphragm pump

We know that the structure of the Air operated double diaphragm pump air chamber is generally used to separate the water chamber from the air chamber. After the air chamber is filled with compressed air, the pulsation of the water in the water chamber is absorbed by the compressed air in the air chamber through the rubber diaphragm Up. The function of the air chamber is to use the compressibility of air, or called elasticity, to absorb the water pulsation of the AODD pump and stabilize it. The water flow into the system is basically stable. However, to achieve the requirement of a basically stable water flow, the air pressure in the air chamber must be compatible with the water pressure. Inflation method of diaphragm pump air chamber: Before the diaphragm pump is operated, inflate the air chamber first, and the air pressure is greater than the working pressure of the pump. Drive the AODD pump and adjust to the working pressure. At this time, you can see the pump’s water outlet hose shakes violently. Take a needle and put it on the air nozzle to deflate. As the deflation progresses, the shaking of the water outlet hose will gradually disappear. After the water outlet hose is stable, stop deflating. ~ We know that the structure of the diaphragm pump air chamber is generally used to separate the water cavity from the air cavity. After filling the air chamber with compressed air, the pulsation of the water in the water chamber is absorbed by the compressed air in the air chamber through the rubber diaphragm. The function of the air chamber is to use the compressibility of air, or called elasticity, to absorb the water pulsation of the diaphragm pump and stabilize it. The water flow into the system is basically stable. However, to achieve the requirement of a basically stable water flow, the air pressure in the air chamber must be compatible with the water pressure. Inflation method of diaphragm pump air chamber: Before the diaphragm pump is operated, inflate the air chamber first, and the air pressure is greater than the working pressure of the pump. Drive the diaphragm pump and adjust it to working pressure. At this time, you can see the pump’s water outlet hose vibrates violently. Take a needle and put it on the air nozzle to deflate. As the deflation progresses, the shaking of the water outlet hose will gradually disappear. After the water outlet hose is stable, stop deflating.

AODD pump manufacturers and suppliers from China

AODD PUMP FROM CHINA — The Air Operated Pneumatic Diaphragm Pump manufactured by china saiken pumps, and it is the most advanced type of diaphragm pumps in market for the moment. It adopts three-way air pilot valve to achieve real no dead stop and faster reversing. Compared with other traditional domestic pumps, it has larger flow rate, more stable operation, and smaller pulsation.

How to achieve energy saving and emission reduction of AODD pump

The AODD pump has a set of high suction energy-saving devices. The upper and lower ends are equipped with medium inlet pipes and outlet pipes, which are connected through the column partition, intermediate and air inlet pipe, and the air inlet pipe is connected with the air source input pipe and in turn It is connected with the air inlet of the Air operated double diaphragm pump through a manual ball valve, an air filter pressure regulating valve and a leakage ball valve. The intermediate components of the pump include the structure of the column diaphragm, diaphragm, air valve, etc. The airflow passes through the main air inlet to the intermediate air valve, and then from the intermediate air valve through the water vapor lubrication hole, and then from the intermediate air valve It flows out from the vent hole, and through the coordination of other components, the reciprocating action of the diaphragm is produced to realize the main work of the diaphragm pump. This product uses water vapor to lubricate itself and can work continuously for a long time. At the same time, it can realize automatic heat dissipation without lubrication, no jamming, and convenient maintenance; the connection between the column partition support and the diaphragm has good sealing and firmness Good, it can prevent the liquid from contacting the central shaft, and there is no danger of flammability and explosion. The pneumatic diaphragm pump can be used for sodium and other highly corrosive acidic media and chemical media; between the column diaphragm row and the intermediate valve The installation stability is high, which prolongs the service life of the pneumatic diaphragm pump during operation.

AODD pump manufacturers and suppliers from China

Applicable occasions of AIR OPERATED DOUBLE DIAPHRAGM PUMP

Because the AIR OPERATED DOUBLE DIAPHRAGM PUMP has the above characteristics, the pneumatic diaphragm pump has gradually invaded the market of other pumps since its birth, and occupied a part of the AODD PUMP. For example, pneumatic diaphragm pumps in the painting and ceramic industries have an absolute dominant position, while in some other industries, such as environmental protection, wastewater treatment, construction, sewage, and fine chemical industries, it is expanding its market share and has other pumps. Alternative status.

Pneumatic diaphragm pump is a new type of conveying machinery, and it is currently the most novel type of pump in China. Using compressed gas as the power source, all kinds of corrosive liquids, liquids with particles, high-viscosity, volatile, flammable, and highly toxic liquids can be exhausted by light extraction. The pneumatic diaphragm pump has six materials: plastic, aluminum alloy, cast iron, stainless steel, perfluorinated, and steel lined with PTFE. The pneumatic diaphragm pump adopts nitrile rubber, neoprene rubber, fluorine rubber, polytetrafluoroethylene, polyhexaethylene according to different liquid media. To meet the needs of different users. It is installed in various special occasions and used to pump various media that cannot be pumped by conventional pumps, and has achieved satisfactory results.
1. Due to the use of gas as power, the flow rate is actively adjusted with the change of back pressure (outlet resistance), which is suitable for medium and high viscosity fluids. The operating point of the centrifugal pump is set based on water. If it is used for a fluid with a slightly higher viscosity, it must be equipped with a reducer or a frequency converter, which greatly increases the cost, and the same is true for gear pumps.
2. It is reliable and low-cost to use pneumatic pumps in flammable and explosive environments, such as the transportation of fuel, gunpowder and explosives, because:
First, it is impossible to produce sparks after grounding;
Second, there is no heat generation during work, and the machine will not overheat;
Third, the fluid will not overheat, because the pneumatic diaphragm pump has the least agitation to the fluid.
3. In the harsh center of the construction site, such as construction site, industrial and mining wastewater discharge, due to the large amount of impurities in the sewage and the complex composition, the pipeline is easy to be blocked, which creates an environment with excessive load on the electric pump, and the motor is easily damaged by heat. The pneumatic diaphragm pump can pass particles and has an adjustable flow rate, and will automatically stop when the pipeline is blocked.
4. In addition, the pneumatic diaphragm pump is small in size, easy to move, does not require foundation, has a small footprint, and is easy and economical to install. Can be used as a mobile material delivery pump.
5. In the treatment of hazardous and corrosive materials, the diaphragm pump can completely isolate the materials from the outside world.
6. Or in some experiments, ensure that no impurities contaminate the raw materials.
7. It can be used to transport fluids with relatively unstable chemical properties, such as photosensitive materials, flocculation fluids, etc. This is because the shear force of the diaphragm pump is low and the physical impact on the material is small.

AODD PUMP manufacturers and suppliers from China