A ro membrane cartridge

Abstract

The utility model discloses a kind of RO reverse osmosis membrane filter element, including filter cylinder, the inside fixed mounting of filter cylinder is equipped with bulkhead, the middle part fixed mounting of bulkhead is equipped with permeate collection pipe, the inside of filter cylinder is provided with filter assembly;The two ends of filter cylinder are respectively threadedly connected with liquid inlet end cap and liquid outlet end cap, and the side wall of liquid outlet end cap is equipped with sewage outlet. The utility model is through multistage modularization filtration design, effectively improves water purification effect, while simplifies maintenance process, reduces cost, ensures the safety and purity of effluent water quality.

Description

Technical Field

[0001] This utility model relates to the field of reverse osmosis membrane filter technology, and in particular to an RO reverse osmosis membrane filter. Background Technology

[0002] With increasing public concern about drinking water quality, various water purification technologies have emerged, among which RO technology is widely used in household and industrial water purification equipment due to its high-efficiency filtration performance. As the core component of water purification equipment, the performance of the RO reverse osmosis membrane filter directly affects the quality of the effluent and the overall efficiency of the equipment.

[0003] Traditional RO reverse osmosis membrane filters typically use a single RO membrane for filtration. While effectively removing dissolved solids, heavy metals, bacteria, viruses, and other harmful substances from water, their effectiveness in removing large particulate matter and organic matter is limited. To improve filtration efficiency, some filter cartridges have begun to adopt multi-stage filtration designs, adding a pre-filter layer before the RO membrane, such as PP cotton and activated carbon. However, these pre-filter layers are often integrated, requiring the entire filter cartridge to be disassembled for replacement, which is not only cumbersome but also increases maintenance costs.

[0004] Furthermore, traditional filter cartridges often suffer from poor sealing between filter layers during installation and removal, leading to water leakage and affecting filtration efficiency. Additionally, the end caps at both ends of the cartridges frequently lack effective restraint structures, resulting in unstable installation positions and further impacting filtration performance and lifespan. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an RO reverse osmosis membrane filter element. Through a multi-stage modular filtration design, it effectively improves water purification, simplifies maintenance procedures, reduces costs, and ensures the safety and purity of the effluent.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An RO reverse osmosis membrane filter element includes a filter cylinder, a baffle plate is fixedly installed inside the filter cylinder, a permeate collection pipe is fixedly installed in the middle of the baffle plate, and a filter assembly is provided inside the filter cylinder.

[0008] The filter cylinder is threaded to an inlet cap and an outlet cap at both ends, and the outlet cap has a wastewater discharge port on its side wall.

[0009] Preferably, the filtering component includes two first filtering layers, two second filtering layers and a RO membrane arranged inside the filtering cylinder body. The first filtering layer, the second filtering layer and the RO membrane are arranged in sequence from outside to inside. The RO membrane is fixedly installed on the outer side of the permeate collecting pipe. The first filtering layer and the second filtering layer are detachably connected.

[0010] Preferably, two limiting rings for limiting the installation positions of the liquid inlet end cover and the liquid outlet end cover are symmetrically arranged on the outer side of the filtering cylinder body.

[0011] Preferably, a pressing plate for pressing the first filtering layer and the second filtering layer tightly is fixedly installed on the inner sides of the liquid inlet end cover and the liquid outlet end cover.

[0012] Preferably, the middle section of the partition plate is a "mouth"-shaped plate, and the left and right ends are discs. An installation hole for installing the permeate collecting pipe is opened on one of the discs.

[0013] Preferably, both the first filtering layer and the second filtering layer are arc structures. The first filtering layer is made of PP cotton, and the second filtering layer is made of activated carbon.

[0014] The utility model has the following beneficial effects:

[0015] Through the precise filtration of the first filtering layer of PP cotton, the second filtering layer of activated carbon and the RO membrane, the filter element can progressively remove large particle impurities, organic matters, residual chlorine, dissolved solids, heavy metals, bacteria, viruses and other harmful substances in water, ensuring the purity and safety of the quality of the discharged water;

[0016] As the core component of the filter element, the RO membrane has extremely high filtration accuracy, can effectively intercept tiny particles and harmful substances in water, and provides high-quality drinking water;

[0017] Both the first filtering layer and the second filtering layer adopt modular design, which is convenient for disassembly and replacement. This design not only simplifies the maintenance process of the filter element, but also reduces the maintenance cost;

[0018] The pressing plate structure on the inner sides of the liquid inlet end cover and the liquid outlet end cover can tightly press the filtering layer evenly, ensure the close contact between the filtering layers, prevent water source leakage, and also contribute to the stable installation and disassembly of the filtering layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of a RO reverse osmosis membrane filter element proposed by the utility model;

[0020] Figure 2 is a schematic structural view of the liquid outlet end cover of a RO reverse osmosis membrane filter element proposed by the utility model;

[0021] Figure 3A schematic cross-sectional view of a RO reverse osmosis membrane filter element proposed by the present utility model.

[0022] In the figure: 1 filter cylinder, 2 liquid inlet end cover, 3 limiting ring, 4 sewage discharge outlet, 5 permeate collection pipe, 6 liquid outlet end cover, 7 pressing plate, 8 first filter layer, 9 second filter layer, 10 partition plate, 11 RO membrane. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] Refer to Figures 1-3 , a RO reverse osmosis membrane filter element, including a filter cylinder 1, a partition plate 10 is fixedly installed inside the filter cylinder 1. The middle section of the partition plate 10 is a "mouth" - shaped plate, and the left and right ends are discs, and an installation hole for installing the permeate collection pipe 5 is opened on one of the discs. The permeate collection pipe 5 is fixedly installed in the middle of the partition plate 10;

[0026] A filter assembly is arranged inside the filter cylinder 1. The filter assembly includes two first filter layers 8, two second filter layers 9 and a RO membrane 11 arranged inside the filter cylinder 1. The first filter layer 8, the second filter layer 9 and the RO membrane 11 are arranged in sequence from the outside to the inside. The RO membrane 11 is fixedly installed on the outside of the permeate collection pipe 5. The first filter layer 8 and the second filter layer 9 are detachably connected. Both the first filter layer 8 and the second filter layer 9 are arc - shaped structures. The first filter layer 8 is a PP cotton, and the second filter layer 9 is activated carbon. Raw water first undergoes primary filtration through a pre - filter such as PP cotton to remove coarser particulate impurities, sludge, colloids, suspended substances, etc. in the water. Then, the activated carbon filter adsorbs odors, colors, organic substances and some heavy metals in the water. The water after pretreatment and adsorption treatment enters the RO membrane filter element. Under the action of pressure, water molecules flow out through the RO membrane 11, while impurities are retained on the other side of the membrane;

[0027] The filter cylinder 1 is threaded to both ends with an inlet cap 2 and an outlet cap 6, respectively. Two limiting rings 3 are symmetrically arranged on the outer side of the filter cylinder 1 to restrict the installation position of the inlet cap 2 and the outlet cap 6. An abutting plate 7 is fixedly installed on the inner side of the inlet cap 2 and the outlet cap 6 to abut against the first filter layer 8 and the second filter layer 9. The abutting plate 7 is a ring and has multiple protrusions evenly spaced on the outer side. The protrusions are used to fix the first filter layer 8, and the ring is used to fix the second filter layer 9. The size of the ring is larger than that of the second filter layer 9 to prevent unfiltered water from directly entering the next layer or the RO membrane 11 through the gap, thereby ensuring the filtration efficiency and effect of the filter element. A sewage discharge port 4 is opened on the side wall of the outlet cap 6.

[0028] Working principle:

[0029] When the filter cartridge is put into use, water first enters the filter housing 1 through the inlet cap 2. The inlet cap 2 is tightly installed at one end of the filter housing 1 via a threaded connection, ensuring that the water source will not leak at this point. Once the water source enters, it will first come into contact with the outermost first filter layer 8. The first filter layer 8 is made of PP cotton and has a coarse filtration function, which can effectively remove large particulate impurities in the water, such as silt and rust, protecting the subsequent filter layers from clogging by large particles.

[0030] The water that has passed through the first filter layer 8 will continue to flow into the second filter layer 9. The second filter layer 9 is made of activated carbon. Due to its porous structure, activated carbon has a strong adsorption capacity, which can further adsorb impurities such as residual chlorine, odors, and organic compounds in the water, thereby improving the purity of the water.

[0031] After passing through two layers of pre-filtration, water enters the core component of the filter cartridge—the RO membrane 11. The RO membrane 11 is a high-precision semi-permeable membrane that utilizes the principle of osmosis to allow only water molecules to pass through, while effectively retaining dissolved solids, heavy metals, bacteria, viruses, and other harmful substances in the water. The RO membrane 11 is tightly wrapped around the outside of the permeate collection tube 5, ensuring that the purified water filtered by the RO membrane 11 flows along the inner wall of the permeate collection tube 5 and is finally discharged from the outlet cap 6 for user use.

[0032] During the use of the filter element, the limiting rings 3 play a key role. They are symmetrically arranged on the outside of the filter cylinder 1, which not only enhances the structural stability of the filter element, but also ensures that the liquid inlet cap 2 and the liquid outlet cap 6 can be accurately and firmly installed in the designated position to prevent water leakage.

[0033] In addition, the clamping plate 7 is used to evenly press the first filter layer 8 and the second filter layer 9 together to ensure close contact between the filter layers and prevent unfiltered water from directly entering the next layer or RO membrane 11 through the gaps, thereby ensuring the filtration efficiency and effect of the filter element.

[0034] The concentrated water and impurities trapped by the RO membrane 11 will be collected through other channels inside the filter element and discharged through the sewage outlet 4 on the side wall of the liquid outlet end cap 6, thus achieving effective separation of purified water and sewage.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An RO reverse osmosis membrane filter element, characterized in that: It includes a filter cylinder body (1), inside which a partition plate (10) is fixedly installed. In the middle of the partition plate (10), a permeate collection pipe (5) is fixedly installed. The middle section of the partition plate (10) is a "mouth"-shaped plate, and the left and right ends are discs. An installation hole for installing the permeate collection pipe (5) is provided on one of the discs. Inside the filter cylinder body (1), a filter component is provided. The filter component includes two first filter layers (8), two second filter layers (9) and a RO membrane (11) arranged inside the filter cylinder body (1). The first filter layer (8), the second filter layer (9) and the RO membrane (11) are arranged in sequence from outside to inside. The RO membrane (11) is fixedly installed on the outer side of the permeate collection pipe (5). The first filter layer (8) and the second filter layer (9) are detachably connected; Both the first filter layer (8) and the second filter layer (9) are arc-shaped structures. The first filter layer (8) is made of PP cotton, and the second filter layer (9) is made of activated carbon; Both ends of the filter cylinder body (1) are respectively threadedly connected with a liquid inlet end cover (2) and a liquid outlet end cover (6). Inside the liquid inlet end cover (2) and the liquid outlet end cover (6), a pressing plate (7) for pressing against the first filter layer (8) and the second filter layer (9) is fixedly installed. A sewage discharge outlet (4) is provided on the side wall of the liquid outlet end cover (6). On the outer side of the filter cylinder body (1), two limiting rings (3) for limiting the installation positions of the liquid inlet end cover (2) and the liquid outlet end cover (6) are symmetrically arranged.

Images