Diaphragm Pump

Diaphragm pump is a new type of mechanical transportation equipment, which can be used for all kinds of corrosive liquids, liquids with particles, high viscosity, volatile, flammable and highly toxic liquids. Diaphragm pumps are divided into air operated diaphragm pumps and electric diaphragm pumps, and their materials are engineering plastics, aluminum alloys, stainless steel, cast iron, etc.

The diaphragm pump separates the liquid to be pumped from the movable column and the pump cylinder by means of a membrane, thereby protecting the movable column and the pump cylinder. The parts on the left side of the diaphragm that are in contact with the liquid are made of corrosion-resistant materials or coated with a layer of corrosion-resistant substances, and the right side of the diaphragm is filled with water or oil.

The AODD pump is a new type of delivery pump that uses compressed air as a power source. Its advantage is that it can absorb various corrosive liquids, liquids with particles, high viscosity, volatile, flammable and highly toxic liquids. The electric diaphragm pump is equipped with different power motors to operate, which achieves the purpose of pumping liquids by electricity. It has many functions, including without the need for irrigation and water supply, and has strong self-priming ability.

Difference between an air diaphragm pump and an electric diaphragm pump

• Different driving methods.
• The air operated double diaphragm pump is driven by compressed air (2-8.4 kg air pressure), and the electric diaphragm pump is driven by electricity.
• Different flow parameters.
  The maximum flow rate of the air operated diaphragm pump is 60m/h, and the flow rate of the electric diaphragm pump is only 28m/h.
• Different adjustments.
  The pneumatic diaphragm pump can adjust the flow rate directly by adjusting the air source pressure. The electric diaphragm pump just can adjust the flow rate with a frequency converter.
• Air diaphragm pumps are structural explosion-proof, which is suitable in all kinds of flammable and explosive places, while electric diaphragm pumps must be equipped with an explosion-proof motor to meet explosion-proof requirements.
• The outlet of the AODD pump can be held back, but the outlet of the electric diaphragm pump cannot be held back, and a safety valve or a pressure relief valve must be installed.
• Under the same model, the air diaphragm pump is cheaper and lighter than the electrical diaphragm pump.
  
  

What is the main material of the diaphragm pump?

Diaphragm pump, also known as control pump, is the main type of actuator. It changes the fluid flow with the help of power operation by receiving the control signal output by the adjustment control unit. The function of the diaphragm pump in the control process is to accept the control signal of the regulator or computer, change the flow rate 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, the adjustment control unit is the human brain, and then the execution unit - the diaphragm pump is the human hands and feet. To realize the adjustment and control of a certain parameter of the process, such as temperature, pressure, flow, liquid level, etc., the diaphragm pump is inseparable.

There are five commonly used materials for AODD pumps, including plastic, aluminum alloy, cast iron, stainless steel, and Teflon. Electric diaphragm pumps are available in four of these materials, including plastic, aluminum alloy, cast iron, and stainless steel. Diaphragm pump diaphragms are installed in various special occasions according to different liquid media, such as nitrile rubber, neoprene rubber, fluorine rubber, polytetrafluoroethylene, etc., to pump various media to meet the needs.