Five core differences between electric diaphragm pumps and pneumatic diaphragm pumps
As an efficient and reliable fluid transport equipment, diaphragm pump is widely used in metallurgy, ceramics, petrochemical, environmental protection and other industries. According to the different driving methods, diaphragm pumps are mainly divided into electric diaphragm pumps and pneumatic diaphragm pumps. Although the two are similar in function, there are significant differences in structure, working principle, performance parameters and application scenarios. The following will analyze the core differences between the two pumps from five aspects in detail to help you better choose the right equipment.
1. Differences in working principles
Electric diaphragm pump:
The electric diaphragm pump is driven by cycloidal pin wheel reducer, combined with the crankshaft slider mechanism, which drives the double diaphragm to reciprocate. This mechanical structure allows the volume of the studio to change periodically, thus achieving continuous suction and discharge of liquids. In recent years, with the continuous improvement of diaphragm materials, the service life of electric diaphragm pumps has been significantly extended, and it has gradually become an ideal substitute for centrifugal pumps and screw pumps, especially in metallurgy, ceramics, petrochemical and other fields.
Pneumatic diaphragm pump:
Pneumatic diaphragm pump with compressed air as the power source, through the pressure to drive the diaphragm reciprocating deformation, so as to change the volume of the pump chamber, to achieve liquid delivery. Its working principle is similar to that of a plunger pump, but because of the gas drive, it has higher safety and flexibility, and is especially suitable for use in flammable and explosive environments.
2. Differences in traffic parameters
Pneumatic diaphragm pump:
The flow range of the pneumatic diaphragm pump is 0~30 cubic meters/hour, the head range is 0~70 meters, and the outlet pressure range is 0~7 kg. Because its flow and pressure can be flexibly controlled by adjusting the pressure of the air source, it performs well in situations where frequent flow adjustment is required.
Electric diaphragm pump:
The flow range of the electric diaphragm pump is 0~20 cubic meters/hour, the head range is 0~30 meters, and the outlet pressure range is 0~3 kg. Although its flow and pressure range is relatively small, it has obvious advantages in stable operation and energy saving.
3. Differences in adaptability
Pneumatic diaphragm pump:
The flow regulation of the pneumatic diaphragm pump is very flexible, and the flow can be adjusted stepless by adjusting the air source pressure without additional equipment. This characteristic makes it a significant advantage in situations where precise flow control is required.
Electric diaphragm pump:
The flow rate of the standard electric diaphragm pump cannot be directly adjusted, and if flow regulation is required, an additional frequency converter must be equipped. Nevertheless, electric diaphragm pumps are excellent in terms of stability and energy saving, and are suitable for long periods of continuous operation.
4. Differences in explosion-proof performance
Pneumatic diaphragm pump:
Pneumatic diaphragm pump with compressed air as the power source, no electric drive, so naturally have explosion-proof characteristics, can be directly used in flammable and explosive environment, such as chemical, oil, natural gas and other industries.
Electric diaphragm pump:
Electric diaphragm pumps require electric drive, if used in flammable and explosive environments, must be equipped with explosion-proof motors to meet safety standards. This increases the cost and complexity of equipment to some extent.
5. Differences in export pressure bearing capacity
Pneumatic diaphragm pump:
The outlet of the pneumatic diaphragm pump has a strong pressure capacity and can directly withstand a certain amount of back pressure without the need to install additional safety valves or pressure relief valves.
Electric diaphragm pump:
The outlet pressure capacity of the electric diaphragm pump is weak, and it is usually necessary to install a safety valve or pressure relief valve to prevent overpressure damage to the equipment. This design limits its application in high-pressure environments.
Electric diaphragm pump and pneumatic diaphragm pump each have their own unique advantages and application scenarios. Pneumatic diaphragm pump with its explosion-proof performance, flow regulation flexibility and high pressure capacity, in flammable and explosive environment and need to frequently adjust the flow of the occasion outstanding performance; The electric diaphragm pump is known for its high stability and good energy saving, which is suitable for long-term continuous operation.
If you still have questions about your choice, please contact our professional team. According to your specific needs, we will recommend the most suitable diaphragm pump solution for you to ensure that your production process is efficient, safe and reliable.
