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.
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Advantages of PVDF fluoroplastic pneumatic diaphragm pump

Advantages of PVDF pneumatic diaphragm pump:

pp aodd pump is a novel domestic positive displacement pump that uses compressed air as the power source, distributes air through the reciprocating movement of the air valve, and drives the diaphragm to squeeze the conveying medium. The pump integrates impurity pumps, self-priming pumps, mud pumps, and shields. Advantages of conveying machinery such as pumps and submersible pumps. This series of pumps has the characteristics of beautiful structure, good physical resistance, and durability. It is suitable for various corrosive liquids, particles, high viscosity, volatile, flammable, explosive, highly toxic liquids, ceramic glaze slurry, fruit Liquids such as slurry, glue, oil recovery from tanker silo bottoms, and temporary tank dumping can all be exhausted. In particular, it can solve the problems of vane pumps running, emitting, dripping, leaking and not allowing idling. This series of products can use ordinary Clean industrial gas or instrument gas, starting at a low pressure of 0.1 kg, can save more than 30% of gas consumption under normal delivery conditions. It is a new generation of energy-saving pumps and has a good market prospect.

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Advantages of pp aodd Pump as a new type of conveying machinery

Why is the new type of conveying mechanical pp aodd pump taken seriously

Air Operated Double Diaphragm Pump is a new type of conveying machinery, which is a novel type of pump in China. Using compressed air as the power source, all kinds of corrosive liquids, liquids with particles, high-viscosity, volatile, flammable, and highly toxic liquids can be exhausted.

The pneumatic diaphragm pump has four materials: plastic, aluminum alloy, cast iron, and stainless steel. Diaphragm pumps use nitrile butadiene rubber, neoprene, fluororubber, polytetrafluoroethylene, and polytetrahexaethylene according to different liquid media. To meet the needs of different users. It is installed in various special occasions and used to pump the medium that cannot be pumped by conventional pumps, and has achieved satisfactory results.

Pneumatic diaphragm pumps are suitable for occasions. Due to the above characteristics of pneumatic diaphragm pumps, diaphragm pumps in the world have gradually invaded the market of other pumps and occupied a part of them. For example, 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 chemicals, it is expanding its market share, and other pumps are irreplaceable. Status.

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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.
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Advantages of magnetic drive pump

Advantages of magnetic drive pump
(1) The mechanical seal of the pump is eliminated, and the inevitable running, emitting, dripping and leaking defects of the mechanical seal of the centrifugal pump are completely eliminated. It is a better choice to achieve no leakage and zero pollution, and it can realize the intrinsic safety of the equipment.

(2) The flow parts of the pump are made of stainless steel and engineering plastics, which can achieve corrosion resistance.

(3) The magnetic coupling and the pump body are combined into one body, which has the characteristics of compact structure and the magnetic coupling can protect the transmission motor from overload.

(4) The matching magnetic drive pumps monitoring system can perform online monitoring of flow, temperature, pressure, power and bearing wear, which further improves the safety and reliability of the pump.

(5) There are fewer wearing parts, convenient maintenance and extended service life.

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How to make good use of pneumatic diaphragm pump

Pay attention to the following points when using pneumatic diaphragm pumps:
1. Ensure that the large particles contained in the fluid do not exceed the maximum safety of the pump to pass the particle diameter standard.
2. The inlet 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 pumping piping system can withstand the high output pressure reached, and ensure the clean and normal working conditions of the driving air system.
4. Electrostatic sparks may cause explosions and cause personal injury and death accidents and property losses. If necessary, use a wire with a large enough cross-sectional area 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. Tighten the pump and all connecting pipe joints to prevent electrostatic sparks from being generated by vibration and impact. Use antistatic hose.
7. pneumatic diaphragm pump should periodically check and test the reliability of the grounding system, and 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 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 pump and the material pipe system when the pump is pressurized. For maintenance, first cut off the air intake of the pump and open it. The bypass pressure relief mechanism relieves the pressure of the pipeline system and slowly loosens the connected pipe joints.
14. Please do not send the pump directly to the manufacturer for repair if the pump is for transporting harmful and toxic fluids. Properly dispose of it in accordance with local laws and regulations, and use genuine parts from Shanghai Wangquan Pump Company to ensure service life.
15. Pumps that use 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.
16. Ensure that all parts contacting the conveying body will not be corroded and damaged by the conveyed fluid.
17. 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.
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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.

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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.

Problems that need to be paid attention to when the magnetic drive pump is running

Problems that need to be paid attention to when the magnetic drive pump is running:

Prevent particles from entering

1. Ferromagnetic impurities and particles are not allowed to enter the magnetic drive and bearing friction pairs.

2. After transporting the medium that is easy to crystallize or precipitate, flush it in time (pour clean water into the pump cavity after stopping the pump, and drain it after 1 minute of operation) to ensure the service life of the sliding bearing.

3. When transporting the medium containing solid particles, it should be filtered at the inlet of the pump flow pipe.

Prevent dry friction

1. Idling is strictly prohibited.

2. It is strictly forbidden to evacuate the medium.

3. With the outlet valve closed, the pump should not run continuously for more than 2 minutes to prevent the magnetic actuator from overheating.

Prevent demagnetization

1. The magnetic torque cannot be designed too small.

2. It should be operated under specified temperature conditions, and the medium temperature is strictly prohibited from exceeding the standard. A platinum resistance temperature sensor can be installed on the outer surface of the magnetic pump isolation sleeve to detect the temperature rise in the annulus area, so as to alarm or shut down when the temperature exceeds the limit.

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Assembly method of chemical magnetic drive pump

Assembly method of chemical magnetic drive pump:

As the name suggests, the chemical magnetic drive pump is a pump with chemical production performance, which is mainly used for the transportation of corrosive liquids. Chemical magnetic pump is a kind of magnetic pump that has appeared in recent years and it uses excellent corrosion-resistant materials.

1. Assembly sequence:

1. Heat the rolling bearing in hot oil until it reaches 80 degrees, and take it out of the shaft housing.

2. Press fit the shaft with the bearing into the suspension.

3. Put paper pads on the two bearing end covers and tighten them on the suspension with bolts. Pay attention to using the paper pads to adjust the gap between the bearing and the bearing end cover (that is, the amount of shaft movement in the suspension) 0.2-0.4 mm.

4. Install the water retaining ring, packing gland, and packing ring on the shaft, and then fasten the pump cover and the suspension together.

5. Put a “0” type sealing ring on the groove of the inner hole of the shaft sleeve, and put the shaft on the shaft.

6. Insert the impeller key, install the impeller, the anti-return washer, tighten with the impeller nut, and then bend the exposed part of the anti-return washer to prevent the leaf nut from loosening.

7. Put the complete rotor part into the pump body and fasten it with screws and nuts.

8. Fix the feet on the suspension with screws and spring washers.

9. Install the pump coupling key and install the pump coupling.

2. Disassembly:

1. Check whether the joints of the pump and pipeline are loose. Rotate the pump by hand to see if the pump is flexible, and then try to see the rotation of the motor.

2. Add bearing lubricating oil to the suspension, and observe that the oil level should be between the two engraved lines of the oil mark.

3. Unscrew the water diversion screw plug of the pump body, and irrigate the water.

4. Close the gate valve of the outlet pipe, the outlet pressure gauge and the inlet vacuum gauge.

5. Turn on the motor. When the pump is running normally, the outlet pressure gauge and the inlet vacuum gauge will gradually open the gate valve after the proper pressure is displayed, while checking the motor load.

6. Try to control the flow and head of the pump within the range indicated on the pump label to ensure that the pump runs for a long time near the high efficiency point in order to obtain excellent energy-saving effects.

7. During the operation of the pump, the bearing temperature does not exceed 35 degrees of ambient temperature, and the limit temperature does not exceed 80 degrees.

8. If abnormal sound is found in the pump, stop immediately and check the cause.

9. To stop using the pump, first close the gate valve and pressure gauge, and then stop the motor.

10. During the first month of operation, the pump should change the lubricating oil after 100 hours. After that, change the oil every 500 hours.

11. Regularly adjust the packing gland to ensure that the leakage in the packing chamber is normal.

12. When the pump is used in the cold winter season, after stopping, the screw plug at the lower part of the pump body must be unscrewed to drain the water to prevent freezing and cracking.

13. If the pump is not used for a long time, the pump must be completely disassembled, the water should be wiped off, the rotating parts and the joints should be coated with grease and installed, and stored properly.

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