I. Overview

Membrane housing, also known as membrane pressure vessels, is a supporting product for reverse osmosis, sodium filtration, ultrafiltration and other devices. The shell is made of304Made of stainless steel tubes or wire-wound fiberglass reinforced plastic, the membrane housing is polished both inside and out.

Ii. Main Technical Features

● Pressure resistance2.0～2.5MPa

● Water inlet methods: Water inlet from both ends and from both sides

● Structure: Standard spare parts, easy and quick disassembly

● Sealing performance: Passed pressure resistance test

● The organizational structures at both ends: clamp type, card type, and internal spring type.

1.It mainly depends on the designer's requirements. The arrangement of the membrane and the requirements for the sections are different. According to the different angles of the inlet and outlet, it can be classified as:0Degree90Degree, and180There are three types of pressure resistance. In terms of pressure resistance theory alone, side-inlet water is better, but it increases the probability of water leakage in pressure vessels.

2.8The ratio of the flow rate and pressure of the membrane to water4"ROThe membrane is much larger. If two openings are made at the end of the membrane housing, it will reduce the pressure resistance of the end face and also add a lot of trouble in installation

3. The main issue is still the flow rate of the concentrated water, as the design for a large water recovery rate of a single membrane element is16%In order to improve the utilization rate of water, multiple membranes are connected in series to complete the task4"Inch"RO The pressure drop of the membrane is higher than8The pressure drop of the inch membrane is much larger, so the number of series connections cannot be too many. The specific number of series connections still depends on the water quality conditions and design parameters. In addition, the selection of high-pressure pumps also needs to be considered.

The main performance characteristics of stainless steel membrane housing

4040The membrane housing is divided into two types: sewn and seamlessSUS304Made of stainless steel. Both ends adoptABSAdd silicone to the headOThe ring seal features high sealing performance and a long service life.

8040Membrane housing: It is divided into two types, namely ferrule type and end cover type, and adoptsSUS304Made of seamless stainless steel pipe, it has excellent sealing performance, high pressure resistance, will not age, and is convenient for installation and cleaning. Working pressureMpa):4.0. The inlet and outlet of the membrane housing can be customized according to customer requirements, with either end inlet (outlet) or side inlet (outlet). Stainless steel membrane shells are available2.5"Cun4"Cun8Cun et al.

1.4"ROMembrane shells are1Core assembly﹑2Core assembly﹑3Core assembly4Core packaging and other series.

2.Membrane shell tubes are divided into welded tubes﹑There are two types of seamless pipes.

The seam pipe is automatically welded into shape, Uniform weld seams﹑"Flat",The inner and outer surfaces are treated with a mirror finish.Withstand voltage test is conducted before leaving the factory,Pressure up16kg;

Seamless tubes are directly drawn from forged billets,Uniform wall thickness,Not prone to leakage,The inner and outer surfaces are treated with a mirror finish,Withstand voltage test is conducted before leaving the factory,Pressure up25kg.