CN223055417U

CN223055417U - Reverse osmosis filter element assembly and filter device

Info

Publication number: CN223055417U
Application number: CN202422117389.XU
Authority: CN
Inventors: 代忠远
Original assignee: Ward Nanjing Environmental Protection Technology Co ltd
Current assignee: Ward Nanjing Environmental Protection Technology Co ltd
Priority date: 2024-08-30
Filing date: 2024-08-30
Publication date: 2025-07-04
Anticipated expiration: 2034-08-30

Abstract

The utility model discloses a reverse osmosis filter element assembly and a filtering device, which comprise a reverse osmosis membrane filter element, a water collecting pipe sleeved on the reverse osmosis membrane filter element and provided with a plurality of water collecting holes, pure water filtered by the reverse osmosis membrane filter element is collected into the water collecting pipe through the water collecting holes, a pure water outlet is formed at the side end of the water collecting pipe, a central pipe sleeved in the water collecting pipe and used as a water inlet channel of raw water, and an upper end cover sleeved on the upper end of the reverse osmosis membrane filter element and attached to the water collecting pipe, wherein a pure water channel is formed at the position, corresponding to the pure water outlet of the water collecting pipe, so that the filtered pure water is collected into a cavity formed by the filter element assembly and a shell of the filtering device through the pure water outlet at the side end and the pure water channel. The reverse osmosis filter element component effectively solves the problem that the TDS value of the cup water of the water purifier is increased.

Description

Reverse osmosis filter element assembly and filter device

Technical Field

The utility model belongs to the field of filtering devices, and particularly relates to a reverse osmosis filter element assembly and a filtering device.

Background

With the pursuit of quality of life by the masses, the water quality is paid attention to, and the water purifying equipment with the reverse osmosis function is popular with the masses because the purified water prepared by the water purifying equipment is fresher, more sanitary and safer. The reverse osmosis technology adopted in the water purifier is a technology for realizing ultra-high precision filtration by utilizing an artificial semipermeable membrane, the aperture of the semipermeable membrane is extremely small and is only between 0.5 and 10nm, water cannot pass through under normal conditions, reverse osmosis can be realized only by pressurizing water on one side of the membrane, water with higher purity is obtained, wastewater can be formed and discharged by the concentration water which cannot realize osmosis, and the reverse osmosis water purifier needs to be plugged for use, so that power is provided for an internal booster pump. Therefore, the raw water filtered by the reverse osmosis technology can obtain purified water with TDS meeting the standard of direct drinking water.

However, when the water purifying equipment is stopped for a long time and is kept still, the TDS of the first cup of pure water is higher when the water purifying equipment is restarted for use, so that the quality of the first cup of pure water is lower, and the water quality cannot meet the requirements of users. This is because there is an osmotic pressure difference between the concentrated water and the pure water itself, the reverse osmosis water purifier works, and the booster pump applies a pressure greater than the osmotic pressure to the raw water side, and a reverse osmosis phenomenon occurs. When the reverse osmosis water purifier stops working, the pressure also disappears, at the moment, the solution still exists in the reverse osmosis membrane shell, the state is that the solution is concentrated water before the membrane and pure water after the membrane, but under the condition that no external pressure is applied, the osmotic pressure difference is recovered along with the time, a bi-directional osmosis phenomenon is generated, namely, pure water permeates to the concentrated water side, and the concentrated water permeates to the pure water side until the two sides reach balance, and the TDS value in the pure water cavity is increased at the moment.

Based on this, a need exists for a novel reverse osmosis filter element assembly that reduces the problem of high TDS values in the head cup.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a novel reverse osmosis filter element assembly so as to reduce the problem of high TDS value of head cup water.

The technical scheme is that the reverse osmosis filter element component comprises:

a reverse osmosis membrane filter element, which adopts a reverse osmosis technology to obtain pure water;

the water collecting pipe is sleeved on the reverse osmosis membrane filter element, a plurality of water collecting holes are formed in the water collecting pipe, pure water filtered by the reverse osmosis membrane filter element is collected into the water collecting pipe through the water collecting holes, and a pure water outlet is formed in the side end of the water collecting pipe;

The central pipe is sleeved in the water collecting pipe and used as a water inlet channel of raw water;

The upper end cover is sleeved at the upper end of the reverse osmosis membrane filter element and is attached to the water collecting pipe, and a pure water channel is formed at the pure water outlet corresponding to the water collecting pipe, so that filtered pure water is collected into a cavity formed by the filter element component and the shell of the filtering device through the pure water outlet at the side end and the pure water channel.

Further, a sealing ring is connected at the pure water outlet of the water collecting pipe of the filter element assembly so as to form sealing connection between the pure water outlet and the pure water channel arranged on the upper end cover.

Further, the top end of the upper end cover of the filter element assembly, a cavity formed by the central tube and the water collecting tube form a waste water cavity, and the port of the upper end cover is a corresponding waste water outlet.

Further, a wastewater flow channel is formed between the upper end cover of the filter element assembly and the upper end of the reverse osmosis membrane filter element, a plurality of diversion trenches are formed in the reverse osmosis membrane filter element, and the lower ends of the diversion trenches are communicated with the wastewater flow channel so as to drain filtered wastewater into the wastewater cavity through the diversion trenches.

Further, the filter element component is positioned at the upper end of the pure water outlet and forms sealing connection with the inner side of the water collecting pipe.

Further, the central tube of the filter element assembly is fixedly connected to the inner side wall of the water collecting tube through a connecting plate which is arranged on the outer side wall in an extending mode.

Further, the outside of the lower end of the central tube of the filter element assembly is in sealing connection with the inside of the water collecting tube, so that the pure water collecting cavity is formed by the sealing connection of the upper end and the lower end.

Further, the filter element assembly further comprises a lower end cover arranged at the bottom end of the reverse osmosis membrane filter element, a raw water cavity is formed between the lower end cover and the lower end cover, and a pore canal for flowing raw water in the central tube into the raw water cavity is formed at the lower end of the water collecting tube.

The utility model provides a filter equipment, this filter equipment includes casing and foretell reverse osmosis filter core subassembly, reverse osmosis filter core subassembly is located this casing, and forms the cavity that is used for holding the pure water that the pure water delivery port of collector tube side flows between the two, the top of casing is equipped with the raw water inlet corresponding with the center tube, the useless mouth of a river corresponding with the port of upper end cover to and the pure mouth of a river that is linked together with the cavity.

Compared with the prior art, the reverse osmosis filter element assembly has the advantages that the central pipe is arranged in the water collecting pipe to serve as a raw water inlet channel, the pure water outlet is arranged at the side end of the water collecting pipe, the pure water channel is correspondingly arranged on the upper end cover to collect filtered pure water into the cavity formed by the shell of the filtering device and the filter element assembly, namely, the pure water is discharged to increase the volume of an actual pure water containing cavity, and further, even if the TDS value of pure water in the water collecting pipe is increased due to bidirectional osmosis caused by shutdown of the water purifier, the integral TDS value of pure water in the large-capacity cavity is not influenced, so that the difference of the TDS values of the pure water obtained by filtering in the final filtering device only has the difference of +/-10 PPM, and the problem of pain point of the rise of the TDS value of head cup water in the water purifier field is effectively solved.

Drawings

FIG. 1 is a schematic view of the structure of a filter element assembly of the present utility model;

FIG. 2 is a cross-sectional view of a filter cartridge assembly of the present utility model;

fig. 3 is an enlarged view of a portion a in fig. 2;

FIG. 4 is a second cross-sectional view of the filter element assembly of the present utility model;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is an enlarged view of portion C of FIG. 4;

FIG. 7 shows a water collecting pipe according to the present utility model is a structural schematic diagram of (a);

FIG. 8 is a schematic view of the structure of the central tube of the present utility model;

FIG. 9 is a schematic water flow diagram of a cartridge assembly of the present utility model.

Detailed Description

The technical scheme of the utility model is further described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the reverse osmosis filter element assembly comprises a reverse osmosis membrane filter element 1, a water collecting pipe 2 sleeved in the reverse osmosis membrane filter element 1 and provided with a plurality of water collecting holes 3, a central pipe 5 sleeved in the water collecting pipe 2, an upper end cover 6 and a lower end cover 13 respectively arranged at the upper end and the lower end of the reverse osmosis membrane filter element 1, and sealing glue or sealing belts can be further additionally arranged at the upper end cover 6 and the lower end cover 13 of the reverse osmosis filter element assembly to improve the tightness of the whole filter element assembly.

As shown in fig. 2 to 6, the central tube 5 of the reverse osmosis filter element assembly of the present utility model is used as a water inlet channel of raw water, that is, the raw water enters through the central tube 5 under the driving of the water pump, flows upward through the reverse osmosis membrane filter element 1 at the bottom end of the lower end cover 13, and flows into the water collecting tube 2 from the water collecting hole 3 to collect. A raw water cavity 14 is formed between the bottom end of the reverse osmosis membrane filter element 1 and the lower end cover 13, and a pore canal 15 is formed on the corresponding water collecting pipe 2, so that raw water in the central pipe 5 enters the raw water cavity 14 through the pore canal 15, and pure water is obtained after filtering by the reverse osmosis membrane filter element.

As shown in fig. 7, the side ends of the water collecting pipe 2 are provided with two pure water outlets 4, and the pure water outlets 4 can be respectively arranged in bilateral symmetry or flexibly arranged according to actual requirements. The upper end cover 6 is arranged in a fitting and sleeving way with the water collecting pipe 2. And a pure water channel 7 communicated with the pure water outlet 4 corresponding to the side end of the water collecting pipe 2 is arranged on the upper end cover 6. The joint between the water collecting pipe 2 and the pure water channel 7 is also provided with a sealing ring to improve the tightness of the connection between the water collecting pipe 2 and the pure water channel 7. According to the utility model, the pure water outlet 4 is formed at the side end of the water collecting pipe 2, and the pure water channel 7 is correspondingly formed on the upper end cover 6, so that pure water collected from the water collecting pipe 2 flows into a cavity formed by the filter element component and the shell of the filter device through the pure water outlet 4 and the pure water channel 7, and the water capacity and volume of pure water of the filter device are further improved.

The upper ends of the central pipe 5 and the water collecting pipe 2, which are positioned at the side end of the water collecting pipe 2, are provided with sealing rings 16 to improve the tightness of the water collecting pipe 2 and the water collecting pipe 2, so that pure water in the water collecting pipe 2 flows out through the pure water outlet 4 and the pure water channel 7 at the side end of the water collecting pipe 2 and is collected in a cavity formed by the filter element component and the shell of the filtering device. The lower ends of the central tube 5 and the water collecting tube 2 are also provided with a sealing ring 16 for sealing connection, and the sealing ring 16 is arranged so that the pure water collecting cavity 12 is formed in the water collecting tube 2. The central tube 5 is fixedly arranged on the inner side wall of the water collecting tube 2 through a connecting plate 11 which is arranged on the outer side wall of the central tube 5 in an extending way, as shown in fig. 8, and the arrangement position of the connecting plate 11 can be positioned above sealing rings 16 at the upper ends of the central tube 5 and the water collecting tube 2.

A wastewater flow passage 9 is formed between an upper end cover 6 and the upper end of a reverse osmosis membrane filter element 1. I.e. the raw water enters from the lower end of the reverse osmosis membrane filter element 1 and the filtered waste water flows out through the waste water flow channel 9 after reverse osmosis. The water collecting pipe 2 is provided with two diversion trenches 10 for guiding the discharge of the wastewater, and the diversion trenches 10 can be arranged at two sides of the reverse osmosis membrane filter element 1 respectively and form a cross-shaped arrangement with the pure water outlets 4 at two sides. The bottom of the diversion trench 10 is communicated with the wastewater channel 9, and the top of the diversion trench 10 is communicated with the wastewater cavity 8 formed by the upper end cover 6, the water collecting pipe 2 and the central pipe 5. And the port of the waste water cavity 8 is a waste water port and is communicated with a waste water port on the shell of the filtering device.

The filtering device formed by the reverse osmosis filter element assembly of the utility model further comprises a shell for arranging the reverse osmosis filter element assembly, and a cavity for containing pure water flowing out from the pure water outlet 4 at the side end of the water collecting pipe 2 is formed between the shell and the shell. The top end of the shell is provided with a raw water inlet corresponding to the central tube 5, a waste water port corresponding to the port of the upper end cover 6 and a pure water port communicated with the cavity.

As shown in fig. 9, the water path flow direction of the reverse osmosis filter element assembly of the present utility model is that raw water flows in through the water inlet channel of the central tube 2 under the pressure drive of the water pump, flows through the reverse osmosis of the reverse osmosis membrane filter element 1 from bottom to top, and the obtained pure water is collected in the water collecting tube and flows to the housing of the filtering device and the cavity of the reverse osmosis filter element assembly for storage through the pure water outlet at the side end of the water collecting tube and the pure water flow channel on the upper end cover. The filtered waste water is discharged from the waste water cavity at the top end of the upper end cover under the guidance of the diversion trench on the water collecting pipe through the waste water channel formed by the upper end cover and the reverse osmosis membrane filter element 1. The reverse osmosis filter element assembly is characterized in that a central pipe is arranged in a water collecting pipe to serve as a raw water inlet channel, a pure water outlet is formed in the side end of the water collecting pipe, a pure water channel is correspondingly formed in an upper end cover to collect filtered pure water into a cavity formed by a shell of a filtering device and the filter element assembly, namely, the pure water is discharged to increase the volume of an actual pure water containing cavity, and even if the TDS value of pure water in the water collecting pipe is increased due to bidirectional permeation caused by shutdown of a water purifier, the TDS value of the whole pure water in a large-capacity cavity is not influenced, so that the difference of the TDS value of the pure water obtained by filtering in the final filtering device only has a difference of +/-10 PPM, and the problem of the rising of the TDS value of head cup water in the water purifier field is effectively solved. In addition, through setting the waste water export, pure water export and raw water mouth to same one end, the convenience when having improved other function filter cores of follow-up complex.

Claims

1. A reverse osmosis filter element assembly, characterized in that the filter element assembly comprises:

A reverse osmosis membrane filter element (1) uses reverse osmosis technology to obtain pure water;

A water collecting pipe (2) is sleeved on the reverse osmosis membrane filter element (1) and is provided with a plurality of water collecting holes (3). Pure water filtered by the reverse osmosis membrane filter element (1) is collected into the water collecting pipe (2) through the plurality of water collecting holes (3). A pure water outlet (4) is provided at a side end of the water collecting pipe (2);

The central pipe (5) is sleeved inside the water collecting pipe (2) and serves as a water inlet channel for raw water;

An upper end cover (6) is sleeved on the upper end of the reverse osmosis membrane filter element (1) and is arranged in close contact with the water collecting pipe (2). A pure water channel (7) is provided on the upper end cover corresponding to the pure water outlet (4) of the water collecting pipe (2) so that the filtered pure water can be collected into a cavity formed by the filter element assembly and the housing of the filter device through the pure water outlet (4) at the side end and the pure water channel (7).

2. The reverse osmosis filter element assembly according to claim 1 is characterized in that a sealing ring is connected to the pure water outlet (4) of the water collecting pipe (2) to form a sealed connection between the pure water outlet (4) and the pure water channel (7) opened on the upper end cover (6).

3. The reverse osmosis filter element assembly according to claim 1 is characterized in that the top of the upper end cover (6) and the cavity formed by the central tube (5) and the water collecting pipe (2) constitute a wastewater cavity (8), and the port of the upper end cover (6) is the corresponding wastewater outlet.

4. The reverse osmosis filter element assembly according to claim 3 is characterized in that a wastewater flow channel (9) is formed between the upper end cover (6) and the upper end of the reverse osmosis membrane filter element (1), and a plurality of guide grooves (10) are provided on the reverse osmosis membrane filter element (1), and the lower end of the guide groove (10) is connected to the wastewater flow channel (9) so as to guide the filtered wastewater through the guide groove (10) to the wastewater cavity (8) for discharge.

5. The reverse osmosis filter element assembly according to claim 1, characterized in that a sealed connection is formed between the outer side of the central tube (5) located at the upper end of the pure water outlet (4) and the inner side of the water collecting pipe (2).

6. The reverse osmosis filter element assembly according to claim 1, characterized in that the central tube (5) is fixedly connected to the inner wall of the water collecting pipe (2) through a connecting plate (11) extending from the outer wall of the central tube (5).

7. The reverse osmosis filter element assembly according to claim 5 is characterized in that a sealed connection is formed between the outer side of the lower end of the central tube (5) and the inner side of the water collecting pipe (2), so that a pure water collection chamber (12) is formed through the sealed connection between the upper and lower ends.

8. The reverse osmosis filter element assembly according to claim 1 is characterized in that the filter element assembly also includes a lower end cover (13) arranged at the bottom end of the reverse osmosis membrane filter element (1), and a raw water cavity (14) is formed between the two, and a channel (15) is opened at the lower end of the water collecting pipe (2) to allow the raw water in the central pipe (5) to flow into the raw water cavity (14).

9. A filtering device, characterized in that the filtering device comprises a shell and the reverse osmosis filter element assembly according to claim 1, the reverse osmosis filter element assembly is located in the shell, and a cavity is formed between the two for accommodating pure water flowing out of the pure water outlet at the side end of the water collecting pipe (2), and the top of the shell is provided with a raw water inlet corresponding to the central pipe (5), a waste water outlet corresponding to the port of the upper end cover (6), and a pure water outlet connected to the cavity.