You come to know about AIR OPERATED DOUBLE DIAPHRAGM PUMP

Introduce the AIR OPERATED DOUBLE DIAPHRAGM PUMP:
Pneumatic diaphragm pump is a new type of conveying machinery, and it is currently the most novel type of pump in China. Using compressed air as the power source, it can be used for various corrosive liquids.
The AODD PUMP has four materials: engineering plastics, aluminum alloy, cast iron, stainless steel, and fluoroplastics. The pneumatic diaphragm pump adopts nitrile rubber, neoprene rubber, fluororubber, 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.

Diaphragm pump manufacturers and suppliers from China

Analysis of the types of AIR OPERATED DOUBLE DIAPHRAGM PUMP

Analysis of the types of AODD PUMP

AIR OPERATED DOUBLE DIAPHRAGM PUMP, also known as control pump, is the primary type of actuator. After receiving the control signal from the modulation unit, the flow of the fluid can be changed through power operation. Diaphragm pumps are generally composed of actuators and valves. With compressed air as the power source, it can pump all kinds of corrosive liquids, granular liquids, high viscosity, volatile, flammable, and highly toxic liquids.
Pneumatic diaphragm pump has four kinds of materials: plastic, aluminum alloy, cast iron and stainless steel. There are four kinds of materials for electric diaphragm pumps: plastic, aluminum alloy, cast iron, and stainless steel. Diaphragm pumps use nitrile rubber, chloroprene rubber, fluorine rubber, polyvinylidene fluoride, and polytetrahydroethylene according to different liquid media. To meet demand. Placed in various special occasions, it is often used for pumping medium that cannot be pumped. Diaphragm pumps can be divided into pneumatic, electric and hydraulic power according to the power of the actuator. They are pneumatic diaphragm pumps driven by compressed air, electric diaphragm pumps driven by electricity, electro-hydraulic diaphragm pumps driven by the pressure of liquid media (such as oil), as well as solenoid valves, electronic, intelligent, and field bus barriers, depending on their function And characteristics. Membrane pump. Diaphragm pumps have many varieties and different structures, but they are constantly updated and changed. Generally speaking, valves are universal. They can not only be matched with pneumatic actuators, but also with electric actuators or other actuators.
Category: Electro-pneumatic diaphragm pump-3 inch plastic electro-pneumatic diaphragm pump-A80 Verderair Almatec series adds the largest scale pump A80. The pump is a large-capacity design and consists of three parts: two compartments and a central body, operation and Easy to maintain. The import and export standard is DN80, the maximum flow rate is 48 cubic meters per hour, and the maximum particle size is 15mm.
Diaphragm pump, pneumatic diaphragm pump, peristaltic pump, hose pump, magnetic pump, Verderair Almatec has a wide range of applications, from the chemical to the food industry. Almatec small pumps are generally used for circulation and sampling, while large pumps are primarily used in the chemical and OEM markets. Pneumatic valve is an important part of pneumatic diaphragm pump. The patented A80 valve is completely free of metal, with high reliability and low noise. This unique design provides a continuous balanced load for the barrier without pressure difference, thereby prolonging the life of the barrier.
One, diaphragm pump selection
The valve body selection of the diaphragm pump is the most important link in the selection of the diaphragm pump. There are many types of valves for diaphragm pumps. The commonly used ones are straight-through single-seat, straight-through two-seat, angle, barrier, small flow, three-way, eccentric rotation, butterfly, sleeve, spherical, etc. 10 types. Before selecting a valve, carefully analyze the medium, process conditions and parameters of the control process, collect the data that meets the requirements, understand the requirements of the diaphragm pump system, and determine the type of valve used based on the collected data. When making specific choices, the following aspects can be considered:
(1) The shape and structure of the valve core are primarily based on the selected flow characteristics and unbalanced force.
(2) Wear resistance When the fluid medium is a suspension containing a high concentration of abrasive particles, serious conflicts will occur every time the valve core and valve seat are closed. Therefore, the flow of the valve should be stable, and the internal material of the valve should be hard.
(3) Because of the corrosiveness of the medium, under the condition of satisfying the conditioning function, try to choose a valve with a simple structure.
(4) When the temperature and pressure of the medium are high and change greatly, the valve core and seat materials should be used as the valve with little temperature and pressure change.
(5) Avoid flashing and cavitation only in liquid media. In the actual production process, flashing and cavitation not only affect the calculation of the flow coefficient, but also cause vibration and noise and shorten the service life of the valve. Therefore, flashing and cavitation should be avoided when selecting valves.
2. Selection of diaphragm pump
(1) The output force of the actuator, regardless of its type, is the effective force to overcome the load (mainly refers to the unbalanced force and unbalanced torque plus conflict, sealing force, gravity and other related forces). Therefore, in order to make the diaphragm pump work normally, the supporting actuator should be able to produce a satisfactory output force, overcome various resistances, and ensure high sealing performance and valve opening. Regarding dual-effect pneumatic, hydraulic and electric actuators, there is generally no reset spring. The magnitude of the effect has nothing to do with the direction of the effect. Therefore, the key to selecting an actuator is to find the maximum output force and torque of the motor. Regarding the single-effect pneumatic actuator, the output force is related to the valve opening, and the force on the diaphragm pump will also affect its movement characteristics. Therefore, it is necessary to establish a force balance in the entire opening range of the diaphragm pump.
(2) After the output power of the actuator is determined by the type of the actuator, the corresponding actuator is selected according to the requirements of the process environment. On-site explosion-proof requirements use pneumatic actuators, junction boxes are explosion-proof, and electric actuators cannot be used. If there is no explosion-proof requirement, pneumatic and electric actuators can be selected, but considering energy saving, electric actuators should be used as much as possible. In hydraulic actuators, its use is not as widespread as pneumatic and electric actuators, but its conditioning accuracy is high.

Material selection of AODD PUMP

Material selection of AODD PUMP:

AODD PUMP is a multifunctional product, which is widely used. There are five kinds of materials for the pump body of the pneumatic diaphragm pump: cast iron, aluminum alloy, engineering plastics, stainless steel and fluorine-lined plastic. How to choose the material of the pneumatic diaphragm pump? According to many years of experience, how to recommend diaphragm pump products for you:

Generally select according to the purpose of pneumatic diaphragm pump:
一, food pump
1, peanut butter, kimchi, mashed potatoes, red sausage, chocolate, syrup, etc. Recommend the use of stainless steel pneumatic diaphragm pump (Reason for recommendation: stable operation, low vibration, safety and health)
2. Beer and beverages recommend the use of engineering plastic pneumatic diaphragm pumps. (Reason for recommendation: safe and hygienic, strong transportation ability, durable in use)
Second, engineering plastic diaphragm pumps are recommended for special places such as tankers, oil plants, oil wells, tank wells, mines, and tunnels. (Reason for recommendation: safe explosion-proof, corrosion-resistant and wear-resistant)
Three, strong acid, strong alkali, strong corrosive, highly toxic, flammable, volatile liquid, engineering plastic diaphragm pump is recommended for special places. (Reason for recommendation: strong corrosion resistance, safe and reliable)
Note: It is advisable to choose cast iron diaphragm pump for concentrated sulfuric acid transportation.
Fourth, organic solvents, such as alcohol, benzene, phenol, etc., advocate the use of stainless steel pneumatic diaphragm pumps. (Reason for recommendation: safe and reliable)
Five, stainless steel pneumatic diaphragm pump is recommended for paint, gum, pigment and adhesive. (Reason for recommendation: high efficiency and corrosion resistance)
Six, it is recommended to use cast iron pneumatic diaphragm pumps for glue, clean water and cement slurry. (Reason for recommendation: stable operation, economical and practical)
Seven, all kinds of tiles, porcelain, bricks and pottery glaze, etc. Recommend the use of cast iron pneumatic diaphragm pump (Reason for recommendation: stable operation, economical and practical)
Eight, it is recommended to use aluminum alloy diaphragm pumps for sewage and lime water. (Reason for recommendation: easy to use and economical.)
Nine, sewage, high temperature chemical solvents, etc., advocate the use of fluorine plastic diaphragm pumps.

Air Operated Double Diaphragm Pump manufacturer and supplier from China

Matters needing attention when conveying dust with AODD PUMP

Pay attention to the following matters when conveying dust with AODD PUMP:

1. Maintain good exhaust and ventilation, away from flammable, explosive and heat sources. Grounding requirements comply with local laws and regulations and some special requirements on site.

2. Ensure that all operators are familiar with the operation and use and master the safety precautions of the pneumatic diaphragm pump. If necessary, provide necessary protective equipment.

3. Ensure that the largest particle contained in the fluid does not exceed the maximum safe passing particle diameter standard of the pump.

4. The intake pressure should not exceed the maximum allowable operating 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.

5. Ensure that the piping system of the pneumatic diaphragm pump can withstand the highest output pressure reached, and ensure the cleanliness and normal working conditions of the driving air system.

6. Electrostatic sparks may cause explosions, resulting in personal injury, death, and property loss. Use a wire with a large enough cross-sectional area as needed to properly and reliably ground the ground screw on the pump.

7. Tighten the pump and all connecting pipe joints to prevent electrostatic sparks from being generated by vibration and impact. Use antistatic hose.

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

9. The exhaust of the pneumatic 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.

AODD PUMP manufacturer and supplier from China

Performance of AODD PUMP

The AODD PUMP is a double-suction diaphragm pump chamber. Of course, there are also single-chamber pneumatic diaphragm pumps, but the flow and head are definitely not as large as the double-suction diaphragm pump. The Air Operated Double Diaphragm Pump has a long service life. If the internal membrane is used If the quality of the film is good, the service life of the pneumatic diaphragm pump can reach more than 10 years. The advantage of this pump will not stop and never jam. It can transport not only flowing liquid media, but also difficult-to-flow media, and even dust , It has the comprehensive advantages of self-priming pump, submersible pump, mud pump, canned motor pump, etc. It can be described as a powerful diaphragm pump. It is mainly driven by compressed air and driven by general air compressors. Both liquids and liquids with particles can be pumped clean. Because it does not have a motor, it can be used safely in flammable and explosive situations. It can also be used to immerse the pump in a liquid medium. It will not damage the pump when idling. Since there are no rotating parts and shaft seals, it is a leak-proof pump.

1. No need to irrigate and divert water, suction lift up to 7m, head up to 70m, outlet pressure ≤ 0.8Mpa

2. The flow is spacious and the passing performance is good, allowing large particles up to 9.4mm in diameter. When pumping mud and impurities, there is little wear on the pump:

3. The head and flow can be adjusted by the air source pressure (the air source pressure is between 0.1-0.8Mpa);

4. Working environment range: 5-65℃; conveying medium range (-20℃-150℃);

5. The pump has no rotating parts and no shaft seal. The diaphragm completely separates the pumped medium from the moving parts and working medium of the pump, and the conveyed medium will not leak outward. Therefore, when pumping toxic, volatile and corrosive media, it will not cause environmental pollution and endanger personal safety;

6. No need for electricity, safe and reliable to use in flammable and explosive places;

7. Can be submerged in the medium to work;

8. It is convenient to use, reliable in operation, and only needs to open and close the gas valve for starting and stopping. Even if there is no medium for a long time due to unexpected conditions or sudden shutdown, 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.

9. Simple structure with few wearing parts. The pump structure is simple, easy to install and maintain. The medium delivered by the pump will not come into contact with moving parts such as the pump air valve, connecting rod, etc., and the performance of other types of pumps will not gradually decrease due to the wear of rotors, pistons, gears, blades and other parts;

10. It can transport more viscous liquids (viscosity below 10,000 centipoise);

11. The pump does not need lubricating oil, even if it is idling, it has no effect on the pump. This is a major feature of the pump.