Bosch Rexroth filter German Bosch Rexroth model Bosch Rexroth price

Bosch Rexroth filters are widely used in industrial and commercial applications, such as food, textile, metallurgy, plastics, pharmaceuticals, building materials, papermaking, HVAC systems for industrial and commercial buildings, irrigation, wastewater treatment, sewage regeneration, municipal water supply, waterworks, large power plants, chemical enterprises, and emergency filtration. The filtration grade is determined by the water quality requirements of the downstream water use system or equipment, and by the water quality requirements of the specific application. They are typically installed at the inlet of pressure reducing valves, relief valves, constant level valves, and other equipment. The filter consists of a housing, a stainless steel filter screen, a blowdown section, a drive mechanism, and an electrical control section.

Bosch Rexroth filter principle

The filter element of the electronic water processor disc filter uses discs as the carrier for impurity removal. It is composed of a stack of plastic discs with grooves in different directions on both sides. The groove edges on adjacent faces form numerous intersection points, which create a large number of cavities and irregular passages that narrow continuously from the outside in. During filtration, these passages cause turbulence in the water, ultimately causing impurities in the water to be intercepted at the various intersection points. When the discs are stacked and mounted on the filter element skeleton, under the action of spring and inlet water pressure, a filter unit that is loose on the outside and tight on the inside is formed. The discs in each filter unit, compressed by the spring and water pressure, form countless fine meshes that impurity particles cannot pass through. The disc width is 12 - 15 mm, and the disc material is high-quality engineering plastic with extremely high wear resistance.

Bosch Rexroth filter features

Thorough and efficient backwashing: Since the filtration pores are fully opened during backwashing, combined with the centrifugal jet action, a cleaning effect is achieved that other filters cannot match. The backwashing process for each filter unit takes only 10 to 21 seconds to complete. Fully automatic operation, with continuous water output time and differential pressure controlling the start of backwashing. Within the filter system, backwashing is performed sequentially among the various filter units and workstations. Automatic switching between working and backwashing states ensures continuous water output, low system pressure loss, and filtration and backwashing effects that do not deteriorate with usage time. Modular design allows users to select the number of parallel filter units as needed, offering flexibility and strong interchangeability. It can flexibly utilize corner spaces on site, allowing for installation with a small footprint according to local conditions. Simple maintenance requires almost no daily maintenance, inspection does not require special tools, and there are very few detachable parts.

Bosch Rexroth filter test

When the filter membrane and filter element are completely wetted with a certain solution, and then pressurized on one side by a gas source (our instrument has an intake control system that can stabilize pressure and regulate intake), as the pressure increases, gas is released from one side of the filter membrane, showing bubbles of varying sizes and quantities on one side of the membrane. The corresponding pressure value judged by the instrument is the bubble point. Diffusive flow test principle: The diffusive flow test refers to when the gas pressure is at 81% of the filter element's bubble point value, at this time, a large amount of gas has not yet passed through perforations, but only a small amount of gas first dissolves into the liquid phase of the membrane, and then diffuses from this liquid phase to the gas phase on the other side. This part of the gas is called the diffusive flow. Measuring the diffusive flow value is a quantitative value that not only accurately determines the integrity of the filter but also reflects issues such as membrane porosity, flow rate, and effective filtration area. This is why foreign manufacturers use the diffusive flow method to test integrity.

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