反沖式自清洗過濾器

Backwash self-cleaning filter

【基本說明】：

反沖式自清洗過濾器用于過濾和攔截低粘度液體中的顆粒雜質。它優秀的結構設計和自動清潔的功能為用戶帶來了穩定可靠的操控性能，同時也大幅度消減了運行維護費用。

反沖式自清洗過濾器采用線隙式或超級編織網式不銹鋼濾芯，內部集成多只楔形濾元，過濾精度從30到3000微米，同時保證了工藝介質中污染顆粒的高濾除率。當過濾器監測到濾芯污堵時就會啟動在線自動清洗過程，在此清洗過程中并不影響過濾器出口液流的連續性。

有多種不同規格大小的過濾器可供選擇，單臺反沖洗過濾器能夠處理的流量可達8000m3/h。

靈活的材質和部件的不同組合以及可單獨調整的控制參數使這種反沖自清洗過濾器能夠應用于各種領域。

Basic Specification:

Backwash self-cleaning filters are applied to filter and intercept particulate impurities in low-viscosity liquids. Its excellent structure design and automatic cleaning function bring stable and reliable operation performance to users, but also greatly reduce the cost of operation and maintenance.

The backwash self-cleaning filter is made of wire-gap or super-braided stainless steel mesh filter element, which integrates several wedge-shaped filter elements. The filtering accuracy is from 30 to 3000 microns, and thus the high filtration rate of contaminated particles in the process medium is guaranteed. When the filter detects the filter plug, it will start the online automatic cleaning process, which does not affect the continuity of the liquid flow at the outlet of the filter.

There are alternative filters of many kinds with different sizes. The maximum handle flow rate of a single backwash filter can be 8000m3/h.

Flexible materials, different combinations of components and control parameters individually adjusted, make it can be applied in various fields.

【結構及工作原理】：

    反沖式自清洗過濾器主要組件有：電機、電控箱、控制管路、主管組件、濾網組件、框架組件、傳動軸、進出口連接法蘭等。

    過濾過程：反沖式自清洗過濾器液體從過濾器進口流入，部分液體直接從濾元下端進入過濾器，另一部分從中間分流管中進入過濾器頂部后，再從濾網上端流入，液體從濾網上下開口同時流入，透過濾網內表面在出口匯集流出。顆粒雜質被攔截在濾網內表面，累積成濾餅，使進出口之間壓差逐漸變大，表明濾餅達到一定厚度，此時濾網通量逐漸減小。

    反沖洗過程當達到設定壓差或時間，自清洗動作啟動，減速電機驅動反沖洗轉臂對準一支或一組濾網，濾網上端被封住，下端連接到清洗吸嘴，打開反沖洗閥，將濾網與排污管接通，濾網外側與排污口之間的壓差驅使濾出清液反向流動沖洗濾網內表面濾餅，并排入排污管道。一支/組濾元反沖洗完畢后，關閉反沖洗閥，清洗轉臂對準下一支/組濾網進行反沖洗。濾網被逐支/組反沖洗后，整個過程完成。

    定位功能：減速電機驅動轉軸上安裝有定位盤及清洗轉臂，定位盤上的每個定位孔分布與每根濾網完全對應，清洗轉臂與其中一個定位孔對應，定位孔到達定位傳感器感應通道時，定位傳感器輸出信號使電機停止轉動，清洗轉臂已對準一支濾元，反沖洗閥打開數秒后關閉，清洗完成，電機繼續運轉，下一個定位孔再次將定位傳感器導通，電機停止后清洗下一支濾元。

Structure and working principal：

The recoiling-type self-cleaning filter are mainly composed of motor, electric cabinet, control pipe, main pipe, strainer, frame, transmission shaft, inlet and outlet connecting flange, etc.

Filtration process: the liquid flows into the filter from the inlet of the filter, part of the liquid enters the filter directly from the lower end of the filter element, and another part enters the top of the filter from the middle splitter pipe, and then flows into the upper end of the strainer. The liquid flows into the upper and lower openings of the filter net simultaneously, and flows out through the inner surface of the filter net at the outlet. Particle impurities are intercepted on the inner surface of the filter net and accumulate into filter cake, which gradually increases the pressure difference between inlet and outlet, indicating that the filter cake reaches a certain thickness and the flux of the filter net gradually decreases.

Backwash process: when it reaches the pre-set pressure difference or time, self-cleaning action starts. The deceleration motor driven back flush jib aligns at a or a set of mesh, the strainer is sealed, the upper bottom is connected to the suction nozzle cleaning, the back flush valve is opened, and strainer and drainage pipe is connected. The pressure difference between the outlet of the strainer and discharging outlet drives filter reverse flow to flush filter cake on the inner surface, and into the sewage pipe. After the backwashing of one filter unit/group is completed, the backwashing valve is closed and the cleaning arm align the next filter unit/group for backwashing. The whole process is completed after each filter is backwashed.

Positioning function: positioning plate and cleaning arm are installed on the drive shaft of deceleration motor, every location hole distributed on the plate complete compliance with each strainer, so does the cleaning jib and one positioning hole. When positioning hole arrives at the induction channel of positioning sensors, positioning sensor output signal to stop the motor, and meanwhile, cleaning arm has aligned a filter element, the flush valve opens for several seconds then closes. And cleaning is completed, the motor continues working with a positioning hole conduction with positioning sensors again, then motor stops, and the next filter element cleaning starts.

【主要特點】：

■ 自動連續在線過濾，反沖洗時流量不間斷，減少停機與維護成本
■ 濾網過濾縫隙精確，高能反沖洗，高強度結構，使用壽命10年以上

■ 脈沖式反沖，對準濾網后再打開排污閥反沖，反沖洗強度高、效果好、耗時短，節約用水

■ 濾網兩端同時進水，增大濾芯通量，水流自由涌動能延緩表面堵塞，避免在濾元一端堵死

■ 緊湊型設計，單機即可實現超大流量過濾，明顯節省安裝空間與施工成本

■ 高度集成，無需大量自動閥、連接件、密封件，可靠性高，運行成本低

■ 自動控制系統高可靠性，界面直觀易于操作，可按實際工況控制過濾器高能運行縫隙型高性能精密濾網

Main features:

● On-line filtration continuously and automatically, uninterrupted flow during backwashing, reducing downtime and maintenance cost.

● Precise filter gap, high energy backwash, high strength structure, service life more than 10 years.

● Pulse backwash, open the sewage valve to backwash after aligning the strainer, high backwash intensity, good effectiveness, short time consuming and water saving.

● Entering water at both ends of the strainer at the same time, increasing the flux of the filter element, and the free kinetic energy of the flow delays the blockage of the surface which avoids blockage at one end of the filter element.

● Compact design, single machine can achieve ultra-large flow filtration, significantly saving installation space and construction costs.

● Highly integrated, without a large number of automatic valves, connectors, seals, high reliability and low operating costs.

● High reliability of the automatic control system, intuitive interface and easy to operate. It can control the filter performance highly according to actual working conditions.

【產品分類】:

Product classification：

                                 反沖式自清洗過濾器         Backwash self-cleaning filter        CR

                                                大流量                        小流量

                                                                      ample flow               Small flow

【行業應用】：

    適用行業：水處理、鋼鐵、造紙、采礦、石油化工、熱電廠、農業灌溉等

    適用液體類型：地下水、海水、循環冷卻水、高低壓噴淋水、水針水、熱交換水、密封水、軸承冷卻水、油井回注水、工藝循環水、清洗水等

    主要過濾作用：去除大顆粒，凈化水質，保護關鍵設備等

Industry applications:

Applicable industries: water treatment, iron, steel, paper making, mining, petrochemical industry, thermal power plant, agricultural irrigation, etc.

Applicable liquid types: groundwater, seawater, circulating cooling water, high and low pressure spray water, water needle water, heat exchange water, sealing water, bearing cooling water, oil well reinjection water, process circulating water, cleaning water, etc.

Main filtration functions: removal of large particles, purification of water quality, protection of key equipment, etc.

【參數表】:

Parameter table：

【選型說明】:

Selection explanation：