What is Tube Type Automatic backwash filter?

A Tube Type Automatic Backwash Filter is a type of filtration system that is often used in whole-house filtration systems. This type of filter typically uses one or two large tanks. The filtration process involves backwashing, which is usually an automatic process.

Unlike cartridge filters which don’t backwash and require the entire cartridge to be replaced when the filter is saturated with contaminants, backwash filters self-clean. They do this by reversing the flow of water, which flushes out contaminants. 

The tube-type self-cleaning filter adopts PLC fully intelligent control and can filter online for a long time. The in-line self-cleaning filter consists of an inlet valve and an outlet valve connected to one or more filter circuits on the main pipeline. Each filter circuit is called a "column", and each column of filters consists of several filter units. The number of filter units in each row of filters and the total number of rows of backwash filters should be determined based on the required process characteristics, namely flow, flow rate, viscosity, average particle content in the medium and some other process parameters.

Application scope

Application scope: The Tube Type Automatic Backwash Filter can be applied in various industries such as Hydrorefining, Hydrocracking, Oil field reinjection water filtration, clean pulverized coal gasification steam condensate filtration, coal bed methane filtration, naphtha filtration, coal tar filtration, liquid chlorosilane silicon removal filtration, petrochemical, pharmaceutical, new energy and others.

Filter media: The Tube Type Automatic Backwash Filter can filter Suspended solids, particulate matter in water, water dirt, bacteria and algae, rust, etc.

This advanced backwash filter is particularly effective for industries that need high-efficiency filtration. Its automatic backwash feature ensures a continuous and efficient filtration process, making it a reliable choice for various applications.

features

The in-tube backwash filter consists of a tank, filter element components, nearby equipment connection pipelines, automatic valves, control cabinets, etc. A plurality of filter tubes are arranged inside the filter housing, and the dirty liquid flows from the outside of the filter tube to the inside of the filter tube, and then flows out from the liquid collecting chamber of the filter. The control adopts pressure difference/time control (pressure difference priority). When the pressure difference between the filter inlet and outlet reaches the set pressure difference limit, the filter enters the reverse flushing process. The filter tube unit that needs to be backwashed must stop filtration and backwash. Available filter element types: metal sintered filter element, wedge filter element, wire mesh filter element, polypropylene filter element, ceramic filter element.
Scope of application: widely used in hydrorefining, hydrocracking, oil field reinjection water filtration, clean pulverized coal gasification steam condensate filtration, coal bed methane filtration, naphtha filtration, coal tar filtration, liquid chlorosilane silicon removal filtration, petrochemical, Pharmaceutical, new energy and other industries.

working principle

Internal backwashing: uses the filtered raw material as the backwashing medium. When the control system receives the backwash signal, the raw material liquid inlet valve of a filtration unit of the filter is closed and the drain valve is opened. Under the action of its own pressure, the filtered liquid is reversed. The solid particles accumulated on the outer surface of the filter element are washed away and discharged into the waste oil pipe, then the drain valve is closed, the raw material inlet valve is opened, the filter unit of this group is put into filtration, and the next filter unit is backwashed until all The filter units are backwashed one by one. When the backwash is completed, the filter enters normal operation state and waits for the arrival of the next backwash signal. Internal backwashing is suitable for situations where the raw material medium has low colloid content, good fluidity, and outlet pressure greater than 0.4MPa.
External backwash: uses other gas backwash media to pressurize the liquid in the tank. When the control system receives the backwash signal, the raw material liquid inlet and outlet valves of a filter unit of the filter are closed, and the backwash medium The inlet valve and drain valve are opened, and the filtered liquid flows in reverse direction driven by the gas pressure. The solid particles accumulated on the outer surface of the filter element are washed away and discharged into the waste oil pipe. Then the backwash medium inlet valve and drain valve are closed. , open the raw material inlet and outlet valves, this group of filter units is put into filtration, and the next group of filter units perform backwashing until all filter units are backwashed one by one. When the backwash is completed, the filter enters normal operation and waits for the next backwash signal. 's arrival External backwashing is suitable for situations where the raw material medium has a high colloid content, poor fluidity, and the outlet pressure is less than 0.4MPa.

Equipment Advantages

Regenerable Filter Element: The filter element can be regenerated by backwashing with auxiliary gas or clean liquid, making it a cost-effective and environmentally friendly option. The process of regeneration ensures the filter element's longevity and consistent performance.

PLC Control System: The filter employs a PLC control system with advanced retrieval and response functions. This allows for automatic backwashing with one-click switching and automatic operation. What's more, the solution can be customized according to the customer's actual working conditions, ensuring a tailored filtration solution that meets specific needs.

High Filtering Accuracy: The filter boasts high filtration precision and a large filtration area, contributing to a high flow rate and low pressure loss. This results in efficient filtration that effectively separates impurities.

Key Components of Equipment：

Imported Bipolar Reducers and Electrical Components: The filter uses imported bipolar reducers and electrical components to ensure reliable and high-quality performance.

PLC Siemens Control System: The adoption of a PLC Siemens control system further enhances the filter's performance, enabling efficient and precise control.

Electric Ball Valves: The option to use electric ball valves adds flexibility and customization to the operation of the filter.

Operational Efficiency: The entire equipment system can operate seamlessly and effectively, ensuring optimal filtration results.

In essence, the filter delivers numerous advantages, including the ability to regenerate the filter element, a customizable PLC control system, high filtering accuracy, and the use of high-quality components. These features make it an ideal choice for various filtration needs.