Waterway system of RO (Reverse Osmosis) filter element

Abstract

The utility model relates to the technical field of RO (reverse osmosis) filter elements, in particular to a waterway system of an RO filter element, which comprises an outer cylinder, an RO membrane, an RO membrane central tube and an RO membrane inner central tube, the RO membrane inner central tube is mounted in the RO membrane central tube, the RO membrane central tube is mounted in the RO membrane, and the RO membrane is mounted in the outer cylinder; a water inlet, a purified water port and a waste water port are formed in the lower end of the outer cylinder, and valve assemblies are mounted in the water inlet, the purified water port and the waste water port respectively; a water channel I is formed in the RO membrane inner central pipe, and the water inlet is communicated with the water channel I; a water channel II is formed between the outer wall of the RO membrane and the inner wall of the outer cylinder, and the water purification port is communicated with the water channel II; a water channel III is formed between the outer wall of the RO membrane inner central pipe and the inner wall of the RO membrane central pipe, and the water channel III is communicated with the water channel II. The RO membrane is of a double-layer central pipe waterway structure, the trend of a water inlet waterway is not limited, it is guaranteed that a large amount of purified water is reserved in a waterway system of the RO filter element, and the TDS rising phenomenon cannot be caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to RO filter core technical field, especially a water system of RO filter core. BACKGROUND

[0002] The utility model discloses a kind of RO filter core, including filter core cylinder, RO membrane, water stop valve, bottom cover, U-shaped decorative cover and handle, RO membrane is inserted in filter core cylinder, filter core cylinder one end is sequentially provided with waste water outlet, purified water outlet and water inlet, waste water outlet and purified water outlet are provided with water stop valve, water stop valve includes valve core, valve seat, return spring, valve core sealing ring, valve seat sealing ring, return spring is sleeved with the periphery of valve core, valve core and the one end of return spring are inserted in valve seat, valve core sealing ring is sleeved with the end of valve core, valve seat sealing ring is sleeved with the periphery of valve seat, the drain pipe of RO membrane is connected with purified water outlet, waste water outlet and water inlet are connected with filter core cylinder inner cavity through connection respectively.The defects of the RO filter core are that its RO membrane is single-layer center tube waterway structure, and the water inlet direction is limited, a large amount of raw water and mixed waste water enter the membrane body from the outer wall of RO membrane, which can cause secondary neutralization pollution of the first cup of water, TDS increase or odor condition, and cannot guarantee the stability of water quality.

[0003] Therefore, the prior art still has room for improvement. UTILITY MODEL CONTENTS

[0004] In order to solve the problems of the prior art, the utility model provides a water system of RO filter core, the RO membrane uses double-layer center tube waterway structure, the water inlet direction is not limited, the water inlet is from the center tube of RO membrane or from the waste water outlet, by reducing the volume of water inlet channel, a large amount of pure water is retained in the water system of RO filter core, TDS increase phenomenon is not caused, and the stability of water quality is guaranteed.

[0005] In order to achieve the above-mentioned purpose, the technical scheme applied by the utility model is as follows:

[0006] A water system of RO filter core, comprising an outer cylinder, an RO membrane, an RO membrane center tube and an RO membrane inner center tube; the RO membrane inner center tube is installed inside the RO membrane center tube, the RO membrane center tube is installed inside the RO membrane, and the RO membrane is installed inside the outer cylinder; the lower end of the outer cylinder is provided with a water inlet, a purified water outlet and a waste water outlet, and the water inlet, the purified water outlet and the waste water outlet are respectively provided with a valve assembly; the RO membrane inner center tube is formed with a water channel one, and the water inlet is communicated with the water channel one; the outer wall of the RO membrane is formed with a water channel two between the inner wall of the outer cylinder, and the purified water outlet is communicated with the water channel two; the outer wall of the RO membrane inner center tube is formed with a water channel three between the inner wall of the RO membrane center tube, and the water channel three is communicated with the water channel two.

[0007] According to the above scheme, the lower end of the RO membrane center tube is provided with an opening for facilitating the installation of the RO membrane inner center tube, the upper end of the RO membrane center tube is formed with a baffle, the baffle is provided with a center hole that cooperates with the water channel 1, the outer periphery of the center hole is provided with a plurality of water string holes 2, and the outer wall of the RO membrane center tube is provided with a plurality of water string holes 1.

[0008] According to the above solution, a lower end cap is fixed to the lower end of the RO membrane, and an upper end cap is fixed to the upper end of the RO membrane. The upper end cap is provided with a plurality of through holes that cooperate with the second water string hole.

[0009] According to the above solution, the upper end of the outer cylinder is provided with an opening for facilitating the installation of the RO membrane, an outer end cover is detachably mounted on the opening, and a limiting assembly is provided between the outer end cover and the upper end cover.

[0010] According to the above solution, the limiting assembly includes a limiting groove provided at the center of the inner wall of the outer end cover and a limiting block provided at the center of the outer wall of the upper end cover, and the limiting block is provided corresponding to the limiting groove.

[0011] According to the above solution, a decorative handle is fixed to the outside of the outer end cover, and a LOGO identification piece is fixed to the outside of the decorative handle.

[0012] According to the above solution, a silicone ring five is provided on the outer wall of the lower end of the central tube inside the RO membrane, and a silicone ring four is provided on the outer wall of the upper end of the central tube inside the RO membrane.

[0013] According to the above solution, a silicone ring three is provided on the outside of the water string hole two.

[0014] According to the above solution, a silicone ring 6 is sleeved on the outer wall of the lower end cover.

[0015] According to the above scheme, the valve assembly includes an ultrasonic cover, a water shut-off accessory and a water shut-off part. A second silicone ring is provided on the outer wall of the upper end of the water shut-off part. The lower end of the water shut-off part is located in the water shut-off accessory. A spring is provided in the water shut-off accessory. The spring is provided on the lower end of the water shut-off part. The two ends of the spring are respectively in contact with the water shut-off part and the water shut-off accessory. The ultrasonic cover is fixed on the outer cylinder, and a first silicone ring is provided between the ultrasonic cover and the water shut-off accessory.

[0016] Beneficial effects of the utility model:

[0017] The utility model is configured such that the RO membrane uses a double-layer central tube water channel structure, which does not restrict the direction of the water channel of the water inlet. The water enters from the central tube inside the RO membrane or from the wastewater outlet. By reducing the volume of the water inlet channel, a large amount of pure water is ensured to remain in the water channel system of the RO filter element, which will not cause the TDS to increase, thereby ensuring the purity and stability of the water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the overall structure of the utility model;

[0019] Figure 2 is the overall structure of the present utility model sectional view;

[0020] Figure 3 is Figure 2 A position in the enlarged view of the middle;

[0021] Figure 4 is Figure 2 B position in the enlarged view of the middle;

[0022] Figure 5 is the RO membrane center tube end baffle diagram;

[0023] Figure 6 is the waterway one direction of the present utility model schematic diagram;

[0024] Figure 7 is the waterway two direction of the present utility model schematic diagram;

[0025] Figure 8 is the RO membrane in the center tube and RO membrane center tube assembly diagram of the present utility model.

[0026] In the figure:

[0027] 1, ultrasonic cover;2, silica gel ring one;3, spring;4, water cut fittings;5, water cut;6, silica gel ring two;7, outer tube;8, RO membrane;9, RO membrane center tube;91, water hole one;92, water hole two;93, baffle;94, center hole;10, silica gel ring three;11, RO membrane in the center tube;12, silica gel ring four;13, silica gel ring five;14, upper end cover;141, through hole;142, limit block;15, lower end cover;16, outer end cover;161, limit slot;17, decorative handle;18, LOGO identification element;19, silica gel ring six;21, water channel one;22, water channel two;23, water channel three;31, water inlet;32, pure water outlet;33, waste water outlet. DETAILED DESCRIPTION

[0028] The technical scheme of the present utility model will be described below in combination with the drawings and examples.

[0029] As Figures 1 to 8As shown, the water system of the RO filter core includes an outer cylinder 7, an RO membrane 8, an RO membrane center pipe 9, and an RO membrane inner center pipe 11; the RO membrane inner center pipe 11 is installed inside the RO membrane center pipe 9, the RO membrane center pipe 9 is installed inside the RO membrane 8, and the RO membrane 8 is installed inside the outer cylinder 7; the lower end of the outer cylinder 7 is provided with a water inlet 31, a clean water outlet 32, and a wastewater outlet 33, and the water inlet 31, the clean water outlet 32, and the wastewater outlet 33 are respectively provided with valve assemblies; the RO membrane inner center pipe 11 is formed with a water channel one 21, and the water inlet 31 is communicated with the water channel one 21; the outer wall of the RO membrane 8 and the inner wall of the outer cylinder 7 are formed with a water channel two 22, and the clean water outlet 32 is communicated with the water channel two 22; the outer wall of the RO membrane inner center pipe 11 and the inner wall of the RO membrane center pipe 9 are formed with a water channel three 23, and the water channel three 23 is communicated with the water channel two 22. In this way, the RO membrane 8 uses a double-layer center pipe water channel structure, does not limit the water inlet water channel direction, and allows water to enter from the RO membrane inner center pipe or from the wastewater outlet, thereby reducing the water inlet channel volume, ensuring that a large amount of pure water is stored in the water system of the RO filter core, and preventing the TDS from increasing, thereby ensuring the stability of the water quality.

[0030] More specifically, according to the forward and reverse osmosis of the RO membrane 8, the water channel has two modes:

[0031] Water channel one: water enters the water channel one 21 through the water inlet 31, enters the water channel three 23 after passing through the RO membrane 8, and then flows back to the water channel two 22, and the water is circulated and flows out of the clean water outlet 32 and the wastewater outlet 33;

[0032] Water channel two: water enters the water channel three 23 through the wastewater outlet 33 after passing through the RO membrane 8, and then flows back to the water channel two 22, and the water is circulated and flows out of the clean water outlet 32 and the wastewater outlet 33;

[0033] The utility model reduces the water inlet channel volume, so that the pure water volume in the filter core is much larger than the water inlet volume, and the TDS does not increase after the machine stops running for a short time.

[0034] Furthermore, the lower end of the RO membrane center tube 9 is provided with an opening for facilitating the installation of the RO membrane inner center tube 11, and the upper end of the RO membrane center tube 9 is formed with a baffle 93, the baffle 93 is provided with a center hole 94 that cooperates with the water channel 1 21, and the outer periphery of the center hole 94 is provided with a plurality of water string holes 2 92, and the outer wall of the RO membrane center tube 9 is provided with a plurality of water string holes 1 91. With this arrangement, during assembly, the RO membrane inner central tube 11 is assembled into the RO membrane inner central tube 9 through the opening, and the outlet of the RO membrane inner central tube 11 (or the outlet of the water channel 1 21 ) cooperates with the central hole 94 , so that water flows through the water channel 1 21 into the water channel 2 22 . Specifically, the water in the water channel 2 22 passes through the RO membrane 8 and then enters the water channel 3 23 through the multiple water string holes 1 91 . The water in the water channel 3 23 returns to the water channel 2 22 after passing through the water string holes 2 92 , and circulates, so that the first cup of water is not contaminated and the TDS does not increase, thereby ensuring the purity and stability of the water quality.

[0035] Specifically, a lower end cap 15 is secured to the lower end of the RO membrane 8, and an upper end cap 14 is secured to the upper end of the RO membrane 8. Upper end cap 14 is provided with a plurality of through-holes 141 that mate with the second water-flow hole 92. This arrangement allows water in the third waterway 23 to flow through the second water-flow hole 92 and then return to the second waterway 22 through the through-holes 141.

[0036] Furthermore, an opening is provided at the upper end of the outer cylinder 7 for facilitating installation of the RO membrane 8 , an outer end cover 16 is detachably mounted on the opening, and a limiting assembly is provided between the outer end cover 16 and the upper end cover 14 .

[0037] Specifically, the limiting assembly includes a limiting groove 161 provided at the center of the inner wall of the outer end cap 16 and a limiting block 142 provided at the center of the outer wall of the upper end cap 14. The limiting block 142 is positioned corresponding to the limiting groove 161. This arrangement prevents the RO membrane 8, the RO membrane central tube 9, and the RO membrane inner central tube 11 from tilting relative to the outer cylinder 7 after assembly, thereby affecting waterway performance.

[0038] Furthermore, a decorative handle 17 is fixed to the outside of the outer end cover 16, and a LOGO identification piece 18 is fixed to the outside of the decorative handle 17. This arrangement facilitates the movement of the RO filter element.

[0039] Specifically, a silicone ring 5 13 is sheathed around the outer wall of the lower end of the RO membrane inner central tube 11, while a silicone ring 4 12 is sheathed around the outer wall of the upper end of the RO membrane inner central tube 11. This arrangement ensures a seal between the lower end of the RO membrane inner central tube 9 and the lower end of the RO membrane inner central tube 11 via the silicone ring 5 13, while the seal between the upper end of the RO membrane inner central tube 9 and the upper end of the RO membrane inner central tube 11 via the silicone ring 4 12 prevents water leakage.

[0040] Further, the water leakage hole 92 is sleeved with a silica gel ring 3 outside. In this way, the upper end of the RO membrane center tube 9 and the upper end cover 14 are sealed to prevent water leakage.

[0041] Further, the lower end cover 15 is sleeved with a silica gel ring 6 outside. In this way, the lower end cover 15 and the outer cylinder 7 are sealed to prevent water leakage.

[0042] Further, the valve assembly comprises the ultrasonic cover 1, the water cut-off fitting 4 and the water cut-off piece 5. The water cut-off piece 5 is sleeved with a silica gel ring 6 outside. The lower end of the water cut-off piece 5 is located in the water cut-off fitting 4. The water cut-off fitting 4 is provided with a spring 3. The spring 3 is sleeved on the lower end of the water cut-off piece 5. The two ends of the spring 3 abut against the water cut-off piece 5 and the water cut-off fitting 4 respectively. The ultrasonic cover 1 is fixed on the outer cylinder 7. The ultrasonic cover 1 and the water cut-off fitting 4 are provided with a silica gel ring 1. In this way, when the upper end of the water cut-off piece 5 is lifted to be separated from the water cut-off fitting 4, the spring 3 is compressed, and the water path is opened. When the water cut-off piece 5 is not forced, the spring 3 is reset under the rebound force, and the water path is closed.

[0043] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are only illustrative, but not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims. These are all within the protection scope of the present application.

Claims

1. A water system for an RO filter element, characterized by: It comprises an outer cylinder (7), an RO membrane (8), an RO membrane central tube (9) and an RO membrane inner central tube (11); The RO membrane inner central tube (11) is installed inside the RO membrane central tube (9), the RO membrane central tube (9) is installed inside the RO membrane (8), and the RO membrane (8) is installed inside the outer cylinder (7); The lower end of the outer cylinder (7) is provided with a water inlet (31), a clean water outlet (32) and a waste water outlet (33), and valve assemblies are respectively installed in the water inlet (31), the clean water outlet (32) and the waste water outlet (33); A water channel 1 (21) is formed in the central tube (11) inside the RO membrane, and the water inlet (31) is connected to the water channel 1 (21); A second water channel (22) is formed between the outer wall of the RO membrane (8) and the inner wall of the outer cylinder (7), and the purified water outlet (32) is connected to the second water channel (22); A waterway channel three (23) is formed between the outer wall of the RO membrane inner central tube (11) and the inner wall of the RO membrane central tube (9), and the waterway channel three (23) is connected to the waterway channel two (22).

2. The water system of the RO filter element according to claim 1, characterized in that: The lower end of the RO membrane central tube (9) is provided with an opening for facilitating the installation of the RO membrane inner central tube (11), the upper end of the RO membrane central tube (9) is formed with a baffle (93), the baffle (93) is provided with a central hole (94) that cooperates with the waterway channel (21), the outer periphery of the central hole (94) is provided with a plurality of water string holes (92), and the outer wall of the RO membrane central tube (9) is provided with a plurality of water string holes (91).

3. The water system of the RO filter element according to claim 2, characterized in that: A lower end cap (15) is fixed to the lower end of the RO membrane (8), and an upper end cap (14) is fixed to the upper end of the RO membrane (8). The upper end cap (14) is provided with a plurality of through holes (141) arranged in coordination with the second water string hole (92).

4. The water system of the RO filter element according to claim 3, characterized in that: An opening is provided at the upper end of the outer cylinder (7) for facilitating the installation of the RO membrane (8), an outer end cover (16) is detachably mounted on the opening, and a limiting assembly is provided between the outer end cover (16) and the upper end cover (14).

5. The water system of the RO filter element according to claim 4, characterized in that: The limiting assembly comprises a limiting groove (161) provided at the center of the inner wall of the outer end cover (16) and a limiting block (142) provided at the center of the outer wall of the upper end cover (14), wherein the limiting block (142) is provided corresponding to the limiting groove (161).

6. The water system of the RO filter element according to claim 4, characterized in that: A decorative handle (17) is fixed on the outside of the outer end cover (16), and a LOGO identification piece (18) is fixed on the outside of the decorative handle (17).

7. The water system of the RO filter element according to claim 2, characterized in that: A silicone ring five (13) is sleeved on the outer wall of the lower end of the central tube (11) inside the RO membrane, and a silicone ring four (12) is sleeved on the outer wall of the upper end of the central tube (11) inside the RO membrane.

8. The water system of the RO filter element according to claim 2, characterized in that: The outer portion of the second water string hole (92) is provided with a silicone ring (10).

9. The water system of the RO filter element according to claim 3, characterized in that: A silicone ring (19) is sleeved on the outer wall of the lower end cover (15).

10. The water system of the RO filter element according to claim 2, characterized in that: The valve assembly comprises an ultrasonic cover (1), a water cut-off accessory (4) and a water cut-off member (5); a second silicone ring (6) is sleeved on the outer wall of the upper end of the water cut-off member (5); the lower end of the water cut-off member (5) is located in the water cut-off accessory (4); a spring (3) is provided in the water cut-off accessory (4); the spring (3) is sleeved on the lower end of the water cut-off member (5); the two ends of the spring (3) respectively abut against the water cut-off member (5) and the water cut-off accessory (4); the ultrasonic cover (1) is fixed on the outer cylinder (7); a first silicone ring (2) is provided between the ultrasonic cover (1) and the water cut-off accessory (4).

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