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Shanghai Filter Source Filtration Technology Co., Ltd

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970801070@qq.com
Phone
17898857850
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No. 4567 Hangtang Road, Shanghai

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Double bag filter

NegotiableUpdate on 02/26

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

The dual bag filter is an efficient filtration device composed of two bag filter units connected in parallel. The main body is made of stainless steel 304/316 or carbon steel (surface anti-corrosion treatment) material. When the equipment is running, the two filtering units can work alternately. When one of the filter bags intercepts impurities and saturates and needs to be replaced, it can quickly switch to the other unit to ensure uninterrupted fluid filtration. It achieves impurity interception through high-precision filter bags, with a filtration accuracy of up to 1-200 microns, suitable for various fluids such as water, oil, coatings, etc. It is widely used in industries such as chemical, food, and environmental protection, effectively improving production continuity and filtration efficiency.

Product Details

Double bag filterBy using innovative dual unit parallel design and bag filter structure, the problem of traditional filter maintenance requiring shutdown is solved. When the equipment is running, the fluid is evenly divided into two parallel bag filter units through the inlet manifold. The filter bags inside each unit act as fine barriers, efficiently intercepting suspended particles, colloids, rust and other impurities in the fluid. The purified fluid flows out from the outlet manifold.When the filter bag of one of the filtration units intercepts impurities and reaches saturation, causing an increase in pressure difference and requiring replacement, the operator does not need to interrupt the entire system. They only need to switch the valve to direct all the fluid to another normally operating unit to quickly replace the saturated filter bag. The replacement process is simple and convenient. Simply open the quick opening end cover of the filter unit, remove the old filter bag and install a new one. Then, switch the valve to put it back into use.Double bag filterFilter bags with a precision of 1-200 microns can be selected according to different working conditions to meet diverse needs from coarse filtration to fine filtration. Whether it is the fine filtration of coatings and inks by chemical enterprises, or the purification treatment of production water and syrup by the food industry,With the characteristic of alternating operation and stable filtering effect, they can ensure the efficient and continuous operation of the production process.

（2） Product Structure

Composed of five core modules, each component collaborates to achieve continuous filtering and convenient maintenance:

Filter shell

Main material：

Stainless steel type: Made of 304/316 stainless steel forging or welding, with a wall thickness of 3-8mm and polished inner walls, suitable for high cleanliness industries such as food and medicine and corrosive media;

Carbon steel type: Q235B carbon steel material, surface treated with shot blasting and sprayed with epoxy zinc rich primer and polyurethane topcoat, suitable for general industrial environments.

structural designComposed of two cylindrical bag filter units connected in parallel, each unit is equipped with a quick opening or flange end cap at the top for easy replacement of filter bags; The bottom is a conical sewage collection chamber, designed with an inclined angle to facilitate the deposition and discharge of impurities; The inlet and outlet manifolds are connected to two units respectively, with a switching valve group set in between.

Filter bag components

Filter bag material：

Polypropylene (PP): suitable for water-based fluid filtration, precision 1-100 microns, temperature resistance -10 ℃ -110 ℃;

Polyester (PE): suitable for oils, coatings, etc., with an accuracy of 1-200 microns and a temperature resistance of -40 ℃ -130 ℃;

Nylon (NMO): High precision filtration, suitable for precision fluids, with an accuracy of 0.5-50 microns;

fixation methodThe filter bag is fixed on the porous support basket inside the filter cartridge through elastic rings or flanges, ensuring sealing and easy disassembly.

Valve switching system

Switch valveUsing ball valves or butterfly valves, with the same material as the shell and a response time of less than 1 second, to achieve rapid switching of the filtration unit;

Control methodManual switching (standard), pneumatic switching, or electric switching (optional), valve operation can be achieved through the control panel or remote control.

sealed system

End cap sealingThe quick opening end cap adopts EPDM rubber or polytetrafluoroethylene sealing ring, with a temperature resistance of -40 ℃ -200 ℃; The flange end cap is equipped with a metal wrapped gasket, suitable for high-pressure working conditions;

Pipeline connection sealingNitrile rubber (NBR) sealing rings are used at the interface to ensure no leakage in the connection.

connecting part

interface type：

Flange connection: DN25-DN600, in compliance with GB, ANSI, JIS and other standards;

Threaded connection: DN15-DN50, using G thread or NPT thread;

supporting footThe bottom is equipped with adjustable support feet for easy horizontal installation and stable support of the equipment.

(3)Application scenarios

Double bag filterWith continuous filtering and efficient performance, it is widely used in multiple fields:

chemical industry

Paint and ink production: filter pigment particles and impurities to ensure product color and quality;

Chemical solution filtration: intercepting catalyst particles and mechanical impurities, protecting reaction vessels and pump valve equipment.

Food and Beverage

Purification of production water: removing suspended solids and microorganisms from water to meet food hygiene standards;

Syrup and juice filtration: intercepting fruit pulp residue and fiber, improving product quality and taste.

Environmentally Friendly Water Treatment

Wastewater treatment: filtering suspended solids and colloids in wastewater to reduce the subsequent treatment load;

Reclaimed water: intercepting impurities in water and improving the quality of recycled water.

Oil and Natural Gas

Lubricating oil filtration: intercepting metal debris and sludge, extending equipment service life;

Natural gas desulfurization and decarbonization: Filter impurities in the desulfurization solution to ensure process stability.

other fields

Electronics industry: Filter tiny particles in ultrapure water and electroplating solutions to meet precision machining needs;

Pharmaceutical industry: Filter insoluble particles in drug solutions to ensure the safety and quality of drug production.