RO booster pump, also known as reverse osmosis booster pump, is a type of booster equipment specifically used in reverse osmosis (RO) water treatment systems. Its main function is to provide sufficient pressure for the RO membrane to ensure that water molecules can pass through the RO membrane, while other impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, viruses, etc. are filtered out. The following is an introduction to the working principle of the RO booster pump:
1. Structural design:
The internal structure of the RO booster pump mainly includes a high-pressure chamber, a booster chamber, a valve cover, an inlet one-way valve, an outlet one-way valve, a diaphragm, a cam water intake bracket component, etc. The gas driven part of the pump head is usually made of aluminum alloy, while the liquid receiving part is made of carbon steel or stainless steel according to different media.
2. Working principle:
The RO booster pump uses a DC motor as the power drive device. When the power is turned on, the motor rotor rotates, driving the eccentric swing wheel to perform eccentric motion, which is then converted into a three cam water drawing bracket component connected to the eccentric swing wheel to perform reciprocating motion, driving the diaphragm to perform reciprocating motion simultaneously, and causing reciprocating suction and squeezing phenomenon on the valve cover. When the cam water intake bracket component moves from top to bottom, a vacuum effect is generated in the pressurization chamber, and the inlet one-way valve is opened and absorbs water; When the cam water intake bracket component moves from bottom to top, it squeezes water upwards, and the inlet one-way valve seals forward, allowing water to only be discharged towards the high-pressure chamber. When the pressure exceeds the reaction force of the one-way valve for water outlet, the one-way valve for water outlet is opened and water is discharged into the high-pressure chamber. The continuous rotation of the motor causes the diaphragm to move back and forth continuously, achieving the purpose of pumping and pressurizing water.
3. Automatic control:
The RO booster pump can automatically start and stop according to the system pressure. Regardless of the reason for the pressure drop in the holding circuit, the booster pump will automatically start to replenish the leakage pressure and maintain a constant circuit pressure. When the pressure between the driving part and the output liquid part reaches equilibrium, the booster pump will stop running and no longer consume air. When the output pressure drops or the air drive pressure increases, the booster pump will automatically start running until it reaches pressure balance again and then stop automatically.
4. Application scenarios:
RO booster pumps are widely used for boosting water heaters, low water pressure in high-rise buildings, sauna baths, bathing and other pressurization applications, pressurization in apartments with insufficient water pressure on the upper floors, solar automatic pressurization, reverse osmosis water purifier pressurization and other occasions.
Through the above working principle, the RO booster pump ensures that the reverse osmosis system can effectively treat water and provide purified water that meets standards.
