Putsch & Co.KG filters, German Putsch & Co.KG models, Putsch & Co.KG prices

Putsch & Co.KG filters are mainly used to capture particulate dust and various suspended solids larger than 0.9μm. Air purifiers mainly consist of two parts: the filter element and the housing. The basic requirements are high filtration efficiency, low flow resistance, and the ability to operate continuously for extended periods to reduce subsequent consumable costs. The filter element refers to the air filter; high-efficiency air filters play a crucial role in the air purification industry. High-efficiency air filters can be widely used at the terminal air supply of air conditioning systems in clean purification workshops for industries such as optical electronics, LCD liquid crystal manufacturing, biomedicine, precision instruments, beverages and food, and PCB printing. Both high-efficiency and ultra-high-efficiency filters are used at the terminal end of cleanrooms. Based on their structural forms, they can be classified into: partitioned high-efficiency, non-partitioned high-efficiency, high-air-volume high-efficiency, and ultra-high-efficiency filters.

History of Putsch & Co.KG filter development

Filtration technology was already applied in production in ancient China; paper made from plant fibers existed in 200 BC. In 105 AD, Cai Lun improved the papermaking method. During the papermaking process, he spread plant fiber pulp onto a dense fine bamboo curtain. Water filtered through the gaps in the bamboo curtain, leaving a thin layer of wet pulp on the surface, which became paper after drying. Early filtration was mostly gravity filtration; later, pressure filtration was adopted to increase filtration speed, followed by the emergence of vacuum filtration. The rotary drum vacuum filter invented in the early 24th century realized continuous filtration operations. Since then, various types of continuous filters have appeared successively. Batch-operation filters (such as plate-and-frame filter presses) have developed due to their ability to achieve automated operation, with increasingly larger filtration areas. To obtain filter cake with low moisture content, mechanically squeezed filters have been developed.

Key points for selecting Putsch & Co.KG filters

The main control parameters for selection include filtration efficiency, rated air volume, initial resistance at rated air volume, and dust holding capacity. Common filter media for high-efficiency air filters include ultra-fine glass fiber. Air filters must meet fire protection requirements. High-efficiency air filters are classified into three grades based on fire resistance: Grade 1 filters, where all materials are non-combustible. During design, twice the initial resistance can be used as the final resistance for calculating filter resistance. The initial resistance of high-efficiency air filters must not exceed 14% of the resistance stated in the product catalog. High-efficiency air filters should not be used alone; they should be installed at the terminal end of the purification air conditioning system. Manufacturers should provide dust holding capacity data. High-efficiency filters must undergo leak detection before leaving the factory. Other requirements are determined based on user needs. In general non-unidirectional flow clean air conditioning systems, combined filter outlets are commonly used.

Installation positions for Putsch & Co.KG filters

In general low-pressure devices with pressures below 140kg/cm2, it is common to install only suction filters, but return line filters and air filters should also be installed. In general medium- and high-pressure hydraulic devices with pressures above 140kg/cm6, return line filters are commonly used to control contamination concentration. However, when there are special requirements for reliability, high-pressure line filters should be used in parallel. For electromagnetic proportional control valves or micro-flow adjustment valves, terminal filters should be installed to increase their reliability. When using servo valves, efforts should be made to reduce the system's contamination concentration; therefore, high-pressure and return line filters should be used in parallel. For large-capacity systems, circulation filters should be installed, and terminal filters should be installed on auxiliary pipelines.

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