Introduce AODD pump

Introduce AODD pump:

Diaphragm pumps are based on reciprocating piston pumps and evolved by adding diaphragm chambers. By receiving the control signal output by the modulation unit, the fluid flow can be changed by power operation. The power often used is air, electric device, liquid medium, etc.

The pneumatic diaphragm pump uses compressed air as the power source. It is a positive displacement pump whose volume changes due to the reciprocating deformation of the diaphragm. Its working principle is similar to that of a plunger pump. SAIKEN Pump Industry will introduce to you
The motor on the electric diaphragm pump drives the diaphragms on the left and right plungers to reciprocate one after the other through the reduction box. In the two pump chambers on the left and right, the movement of the diaphragms of the upper and lower four one-way ball valves causes the volume change in the working chamber, forcing the four one-way ball valves to open and close alternately, so as to continuously suck and discharge the liquid.

Pneumatic double diaphragm pump is only double diaphragm pump refers to double suction chamber, single diaphragm pump has one suction chamber. However, the pressure of the diaphragm pump cannot be increased and is limited by the pressure of the air source. Diaphragm pump flow is usually not too large, most of which are used in small systems. It is different from traditional centrifugal pumps used in large flow.

The selection of the valve body type of the diaphragm pump is the most important link in the selection of the diaphragm pump. There are many types of diaphragm pump valve bodies. Commonly used are straight single-seat, straight double-seat, angular, diaphragm, small flow, three-way, eccentric rotation, butterfly, sleeve, spherical, etc. 10 types. Before selecting a valve, it is necessary to carefully analyze the medium, process conditions and parameters of the control process, collect enough data, understand the system’s requirements for the diaphragm pump, and determine the type of valve to be used based on the collected data. In the specific selection, the following aspects can be considered:

(1) The spool shape and structure are mainly considered 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, the valve core and valve seat joint surface will be severely rubbed every time it is closed. Therefore, the flow path of the valve must be smooth, and the internal material of the valve must be hard.

(3) Corrosion resistance. Due to the corrosive nature of the medium, a valve with a simple structure should be selected as far as possible if the adjustment function can be met.

(4) The temperature and pressure of the medium. When the temperature and pressure of the medium are high and the changes are large, the valve core and valve seat materials should be selected with small changes in temperature and pressure.

(5) Prevent flashing and cavitation. Flashing and cavitation only occur 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, which will shorten the service life of the valve. Therefore, when selecting the valve, prevent the valve from flashing and cavitation.

Diaphragm pumps can absorb all kinds of corrosive liquids, liquids with particles, high-viscosity, volatile, flammable, and highly toxic liquids. It is reliable and low-cost to use pneumatic pumps in flammable and explosive environments, such as the transportation of fuel, gunpowder, and explosives. It can still work stably in harsh places such as construction sites and industrial and mining wastewater discharge environments.

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How to see the selection parameters of the diaphragm air pump

How do you look at the selection parameters of diaphragm air pumps? Any pump equipment selection needs to be selected based on the performance parameters of the model. Diaphragm pumps are no exception. They are also based on the flow, head, suction, working pressure, etc. required by the transportation project. Parameters can be selected according to actual needs. For details, please refer to the following content brought by SAIKEN Pump Industry.

At present, the diaphragm pump model and specifications are relatively abundant. When selecting the model, the user mainly focuses on the parameters such as flow, pressure, and suction. At the same time, according to the different working conditions and environment, decide which pump body material to choose. Currently, cast iron and aluminum are supported. The pump body is made of alloy, stainless steel, plastic, rubber lining and other materials. In addition, depending on the composition of the transportation medium, it is necessary to consider which material the diaphragm is used. Zhongcheng Pump provides diaphragms made of nitrile rubber, neoprene, fluorine rubber, polytetrafluoroethylene, food rubber and other materials.

In fact, users don’t have to worry about how to look at the selection parameters of the diaphragm air pump at all. They only need to inform SAIKEN pumps of their transportation needs to get professional and detailed selection guidance. SAIKEN can provide complete and mature after-sales technical services. , So that users have no worries.

After the above introduction, you must also have a certain understanding of how to look at the selection parameters of diaphragm air pumps. If you want to know other pump information, you can refer to other related content in the station.
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Application industries of air-operated double diaphragm pumps

Application industries of air-operated double diaphragm pumps

The application industry of AODD pumps is quite wide. The common ones are petrochemical and pharmaceutical machinery industries. The reason why diaphragm pumps are popular is that this pump product has unique characteristics and excellent comprehensive performance, which can replace a variety of common transportation equipment, such as It can be used as submersible pumps, self-priming pumps, mud pumps, canned pumps and other equipment in many situations.

Before understanding the application industry of the diaphragm air pump, it is necessary to have an understanding of its working characteristics and advantages. The diaphragm pump is a pneumatic pump. Unlike other motor pumps, which rely on power, it uses compressed air to achieve material discharge. Therefore, the motor is light and the whole pump is light, the internal structure is also very simple and compact, and the body is small, which brings great convenience to the use and installation. Moreover, according to actual working conditions, the pump body supports materials such as cast iron, stainless steel, aluminum alloy, and engineering plastics.

In terms of working performance, the adaptability of the diaphragm pump to the medium is comparable to that of a screw pump. At the same time, it can be self-primed, submersible, and can handle fluids with particles. It will not leak during transportation, and it will not heat up even if it is idling due to an accident. , It will not damage the pump even if it is running under load. It has an automatic protection function and has fewer internal components. It will not cause performance degradation due to component wear after long-term use like other pump products. It is an ideal transportation equipment at the moment.

Such a comprehensive performance, worry-saving and labor-saving transportation equipment is very popular in the current industrial field. The application industry of diaphragm air pumps is also increasing. It can be used to transport sewage in sewage ponds or other tunnels, and can suck more viscosity. High liquids, such as adhesives and glues, can also be used to transport hazardous media, such as various highly toxic, flammable, and volatile liquids. The pump’s tolerance to the medium is as high as 150°C, and it can handle transportation projects that many pumps cannot complete.

After the above introduction, I believe that you also have an intuitive understanding of the application industry of diaphragm air pumps. In short, the scope of application of this equipment is extremely wide, and because the motor is not used, it means that the use environment is not restricted. The remote corners of the power cord can be used freely.
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Disassembly steps of pneumatic diaphragm pump

Knowing the disassembly steps of the Air Operated Diaphragm Pumps can effectively sort out the faults and facilitate the maintenance of the stable progress of the transportation project. This is also the basic mechanical knowledge necessary for equipment operators. SAIKEN Pumps combines the previous dismantling experience of pneumatic diaphragm pumps and organizes the relevant operating steps for reference. For details, please refer to the following.

AODD pumps are well-known for their excellent comprehensive performance and wide versatility. They are stable and reliable in daily operation, and the failure rate is not high. However, long-term use and harsh working conditions will inevitably bring wear and tear, so it is necessary to know the pneumatic Perform necessary maintenance on the diaphragm pump after the disassembly steps, the relevant steps are as follows.

Mark the pump body and air chambers on the left and right sides of the pneumatic diaphragm pump before disassembling to avoid subsequent assembly errors;
Remove the fastening bolt connecting the outlet pipe and the pump body. After disassembly, you can directly see the two key components of the valve ball and the valve seat. You can check the signs of aging and wear to determine whether you need to replace new parts; Abnormal, it will cause abnormal pressure of the pump, irregular work, etc.;
Separate the intermediates of the outer pump body and the inner pump body. After disassembling the pump body, the status of the diaphragm can be checked. The integrity of the diaphragm is particularly important. If it is damaged, the medium will leak;
To check the diaphragm, you need to use tools to fix the edge of the diaphragm outer splint, separate the diaphragm device from the intermediate body, and then rotate clockwise to loosen the diaphragm device;
After removing the outer splint of the diaphragm, take out the shaft in the intermediate body, and use a tool to separate the shaft and the diaphragm device to check the wear of the splint and diaphragm of the shaft;
Use a wrench or other tools to open the valve to check the wear of the piston, oil seal, sealing ring, resistance rod and other components;

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AODD PUMP features

AODD PUMP features:

Compressed air is the power.
It is a positive displacement pump whose volume changes caused by the reciprocating deformation of the diaphragm. Its working principle is similar to that of a plunger pump. Due to the characteristics of the working principle of the diaphragm pump, the diaphragm pump has the following characteristics:
(1) The pump will not overheat: compressed air is used for power, and it is a process of expansion and heat absorption when exhausting. The temperature of the pneumatic pump is reduced when it is working, and no harmful gas is discharged.
(2) No electric sparks: The pneumatic diaphragm pump does not use electricity as power, and prevents static sparks after being grounded
(3) Liquids containing particles can be passed: because the volumetric work and the inlet is a ball valve, it is not easy to be blocked.
(4) The shearing force to the material is extremely low: how to suck in and out when working, so the agitation to the material is minimal, suitable for the transportation of unstable materials
(5) The flow can be adjusted, and a throttle valve can be installed at the material outlet to adjust the flow.
(6) It has the function of self-priming.
(7) It can be run dry without danger.
(8) Can dive for work.
(9) The fluids that can be transported are extremely wide, ranging from low-viscosity to high-viscosity, and viscous from corrosive.
(10) There is no complicated control system, no cables, fuses, etc.
(11) Small size, light weight and easy to move.
(12) There is no need for lubrication, so it is easy to maintain and will not pollute the working environment due to dripping.
(13) The pump can always maintain high efficiency and will not be reduced due to wear.
(14) 100% energy utilization. When the outlet is closed, the pump will automatically stop, and the equipment will move, wear, overload, and heat
(15) There is no dynamic seal, easy maintenance to avoid leakage. No dead spots when working.
AODD PUMP manufacturers and suppliers

AODD PUMP application advantages

AODD PUMP application advantages:
The aerodynamic double diaphragm pump is a new type of conveying machinery that can convey various corrosive liquids, liquids with particles, high viscosity, volatile, flammable, and highly toxic liquids. The diaphragm pump has four materials: plastic AODD PUMP, aluminum alloy AODD PUMP, cast iron AODD PUMP, stainless steel AODD PUMP.
Diaphragm pumps use nitrile rubber, chloroprene rubber, fluorine rubber, 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.
Diaphragm pumps have an absolute dominant position in the painting and ceramic industries. The advantages of pneumatic diaphragm pumps are:

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.
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.
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 raw materials in some tests.
In addition, the diaphragm pump is small in size, easy to move, does not require a foundation, occupies a very small area, and is easy and economic to install. It can be used as a mobile material transfer pump.
AODD PUMP manufacturers and suppliers

Precautions when using AODD PUMP

Precautions when using AODD PUMP:
Air double diaphragm pump is a positive displacement pump that uses compressed air as its 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 a pneumatic diaphragm pump to operate:

Ensure that the largest particle contained in the fluid does not exceed the maximum safe passing particle diameter standard of the pump.
The intake pressure should not exceed the maximum 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.
Ensure that the pump pressure piping system can withstand the highest output pressure reached, and ensure the cleanliness and normal working conditions of the driving air system.
Electrostatic sparks may cause explosions, resulting in 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.
Grounding requirements comply with local laws and regulations and some special requirements on site.
Tighten the pump and all connecting pipe joints to prevent electrostatic sparks from being generated due to vibration, impact and rubbing. Use antistatic hose.
To periodically check and test the reliability of the grounding system, the grounding resistance is required to be less than 100 ohms.
Keep good exhaust and ventilation, away from flammable, explosive and heat sources.

Media that AODD PUMP can transport

Media that AODD PUMP can transport:

Pump peanut butter, kimchi, mashed potatoes, small red sausage, apple jam, chocolate, etc.
Pump paint, gum, and pigment.
Adhesives and glues, all types can be pumped.
All kinds of tiles, porcelain, bricks and pottery glaze slurry.
After the oil well is drilled, pump the sediment and grouting.
Pump various emulsifiers and fillers.
Pump all kinds of sewage.
Pumps are used as tankers and barges are used to clear the warehouse and absorb the sewage in the warehouse.
Hops and baking powder syrup, syrup, molasses.
Pump water in mines, tunnels, tunnels, beneficiation and slag.
Pump cement grouting and mortar, all kinds of rubber grout.
Various abrasives, corrosives, oil and mud, cleaning grease and general containers.
Various highly toxic, flammable and volatile liquids.
Various strong acids, strong alkalis, and strong corrosive liquids.
All kinds of high temperature liquids can withstand up to 150 degrees.
As the front-stage pressure sending device of various solid-liquid separation equipment.
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Briefly introduce the AODD PUMP

The air-operated double diaphragm pump is also known as the control pump. It is the main type of actuator. By receiving the control signal output by the adjustment control unit, it uses power operation to change the fluid flow. The role of the AODD PUMP in the control process is to accept the control signal of the regulator or computer, change the flow of the adjusted medium, and maintain the adjusted parameters within the required range, so as to achieve the automation of the production process. If the automatic adjustment system is compared with the manual adjustment process, the detection unit is the human eye and the adjustment control unit is the human brain, then the executive unit—the diaphragm pump is the human hand and foot. To realize the adjustment and control of a certain parameter such as temperature, pressure, flow, and liquid level in the process, it is inseparable from the diaphragm pump.
There are five commonly used materials for pneumatic diaphragm pumps: plastic, aluminum alloy, cast iron, stainless steel, and Teflon. There are four kinds of materials for electric diaphragm pumps: plastic, aluminum alloy, cast iron, and stainless steel. According to different liquid media, the diaphragm of the diaphragm pump adopts nitrile rubber, neoprene rubber, fluorine rubber, polytetrafluoroethylene, polyhexaethylene, etc., to be placed in various special occasions to pump various media to meet the needs.
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The working principle of SKQ plastic diaphragm pump AODD PUMP

The working principle of SKQ plastic diaphragm pump AODD PUMP:

Compressed air is the power.
It is a positive displacement pump whose volume changes caused by the reciprocating deformation of the diaphragm. Its working principle is similar to that of a plunger pump. Due to the characteristics of the working principle of the diaphragm pump, the diaphragm pump has the following characteristics:
(1) The plastic diaphragm will not overheat: compressed air is used for power, and it is a process of expansion and heat absorption when exhausting. The temperature of the pneumatic pump is reduced when it is working, and no harmful gas is discharged.
(2) No electric sparks: The pneumatic diaphragm pump does not use electricity as power, and prevents static sparks after being grounded
(3) Liquids containing particles can be passed: because the volumetric work and the inlet is a ball valve, it is not easy to be blocked.
(4) The shear force on the material is extremely low: how to suck in and out when working, so the agitation to the material is minimal, suitable for the transportation of unstable materials
(5) The flow can be adjusted, and a throttle valve can be installed at the material outlet to adjust the flow.
(6) It has the function of self-priming.
(7) It can be run dry without danger.
(8) Can dive for work.
(9) The fluids that can be transported are extremely wide, ranging from low-viscosity to high-viscosity, and viscous from corrosiveness.
(10) There is no complicated control system, no cables, fuses, etc.
(11) Small size, light weight and easy to move.
(12) There is no need for lubrication, so it is easy to maintain and will not pollute the working environment due to dripping.
(13) The pump can always maintain high efficiency and will not be reduced due to wear.
(14) 100% energy utilization. When the outlet is closed, the pump will automatically stop, and the equipment will move, wear, overload, and heat
(15) SKQ plastic diaphragm pump has no dynamic seal, easy maintenance to avoid leakage. No dead spots when working.