RELIABLE PERFORMANCE IN HARSH ENVIRONMENTS
Fully automatic backwashing filtration systems are widely used in modern chemical production plants. They integrate with electrical systems, instrumentation, and valves to achieve automatic filtration and backwashing operations, controlled by a DCS or PLC system. The system can be designed as a single filtration unit or an A/B switching filtration system. The filter uses sintered metal membrane materials as the filtration element, effectively filtering and removing micron or sub-micron particles from the liquid. A differential pressure gauge monitors the system in real time, and core technology is used to ensure the regeneration of the metal membrane.
Backwash process runs automatically without shutdown, ensuring continuous filtration and stable system performance.
Filtration continues during backwashing, preventing downtime and improving overall production efficiency.
Reduced manual cleaning and fewer replacement parts significantly lower operating and maintenance expenses.
Effectively removes solid particles, protecting downstream equipment and improving process reliability.
Designed for harsh industrial conditions with durable materials and long service life
The Unite automatic backwashing filtration system consists of multiple parallel filtration units arranged in rows and groups. The normal flow is from outside to inside, while backwashing occurs from inside to outside.When the raw material passes through the filter vessel containing the filter elements, particulate matter gradually deposits and accumulates on the outer surface of the filter elements, forming a filter cake. As the thickness of the filter cake increases, the liquid flow becomes increasingly difficult to penetrate the filter elements, and the pressure difference increases. When the pressure difference or operating time reaches a preset value, the raw material inlet valve of that group is closed first, followed by the rapid opening of the backwashing valve. Clean filtered liquid is then used to create a pressurized flow from the top to the bottom of the filter, dislodging the filter cake from the surface of the filter elements. The removed filter cake is discharged through the drain line. After all the other groups in that row have been backwashed, the drain valve is closed, and the normal filtration process is resumed. The other rows are then backwashed in sequence.
Fluid enters the filter and solid particles are captured by the filter element.
When preset pressure or time is reached, the system automatically initiates backwashing.
Removed particles are flushed out through the drain outlet.
Differential pressure is continuously monitored to detect filter contamination.
Clean fluid flows in reverse direction to remove trapped contaminants from the filter surface.
The system resumes normal filtration without interrupting operation.
| Standard design pressurelevel | 1.6MPa, 2.5MPa, 4.OMPa |
|---|---|
| Maximum design temperature | 0-250°C (depending on seals) |
| Precision range | 1-100um |
| Filter unit valve size | 1~20" |
| Filter unit filtration area | 1~60m2 |
| Backwash pressure difference | 50KPa-200KPa |
| Alarm pressure difference | < 200KPa |
| Main pipe inlet and outlet size | DN80-DN500 |
| Main pipe inlet and outlet flange type | loose flange or customer-specified |
| Main pipe inlet and outletconnection standard | HG/T20592-2009 (standard, compatible with DIN),HG/T20615-2009 (compatible with ANSI B16.5) |
| Filter element type and material | V-SLOT gap-type metal filter element,material 304/316L/duplex stainless steel |
| Shell liquid-contacting material | CS/304/316L/duplex stainless steel/titanium |
| Shell sealing material | NBR nitrile rubber (standard)/VITON (FKM) fluororubber |
| Fluid control valve | Pneumatic ball valve, protection class IP65/IP65, valve seat material PTFE |
| Utility supply requirement | AC220V, 0.4-0.6MPa clean and dry compressed air |
| Controsystem | Siemens PLC, S7-200, S7-1500 series, voltage 24V, IP55/IP65 |
| Pressure difference sensor | Pressure transmitter/pressure difference transmitter |
1. Working pressure: 0.2-5.0 Mpa
2. Working temperature: -196 ~ + 800 °C
3. The filtration precision: 0.5 microns to 200 microns4. The power supply voltage: 24 v DC or AC 220 v
5. Air pressure: 0.45 ~ 0.6 Mpa
6. Working mode: differential pressure, timing, manual7. Level of explosion-proof: Ex dl BT4, CT4, CT5
8. Optional filter: PA/PE polymer powder sintered filter, wedge filter, stainlesssteel powder sintered filter, titanium rod filter sintering net filter, etc
pre-coated filters are
fully automatic backwashing filters have
We use cookies to collect information about how you use this site. We use this information to make the website work as well as possible and improve our services.more details
