Reverse osmosis water purifier capable of realizing zero stale water

Abstract

The utility model discloses a reverse osmosis water purifier capable of realizing zero stale water. The water purifier comprises a front filter element, a reverse osmosis membrane filter element, a pressure barrel and a rear filter element which are communicated in sequence, the water inlet end of the front filter element is communicated with a water source, the water outlet end of the front filter element is communicated with the water inlet end of the reverse osmosis membrane filter element, the pure water end of the reverse osmosis membrane filter element is communicated with the water port of the pressure barrel, the water port of the pressure barrel is communicated with the water inlet end of the rear filter element, and the water outlet end of the rear filter element is communicated with the pure water outlet. According to the water purifier disclosed by the invention, on the basis of integrating the front filter element, the reverse osmosis membrane filter element and the rear filter element, the pressure barrel is arranged between the reverse osmosis membrane filter element and the rear filter element, so that purified water is stored in the pressure barrel, the problem of water in a first cup is effectively solved, zero aged water is realized, and the water quality is improved. Meanwhile, the water flow of the whole water purifier can be improved; and the rear part of the pressure barrel is communicated with the rear filter element, so that the water purification effect is further improved, and the rear filter element is fixedly connected by adopting a connecting ring fixing mode, so that the space capacity of the whole water purifier is reduced, and the adaptability is wider.

Description

Technical Field

[0001] The utility model belongs to the field of water purifiers, and in particular relates to a reverse osmosis water purifier capable of achieving zero stale water. Background Art

[0002] When the water purification equipment is shut down for a long time and then restarted, the TDS of the first cup of pure water is high, resulting in low quality of the first cup of pure water, which cannot meet the needs of users. This is because there is an osmotic pressure difference between concentrated water and pure water. When the reverse osmosis water purifier is working, the booster pump will apply a pressure greater than the osmotic pressure to the raw water end, resulting in reverse osmosis. When the reverse osmosis water purifier stops working, this pressure will also disappear. At this time, there is still solution in the reverse osmosis membrane shell. The initial state is concentrated water in front of the membrane and pure water behind the membrane. However, in the absence of external pressure, over time, the osmotic pressure difference is restored, and a bidirectional osmosis phenomenon will occur, that is, pure water penetrates into the concentrated water side, and concentrated water penetrates into the pure water side, until the two sides reach equilibrium, which will cause the TDS value in the pure water cavity to increase.

[0003] To solve this problem, the existing technology requires that the water purifier be started every once in a while, usually every 30 minutes, and the high-concentration water that has penetrated into the pure water side is discharged and replaced with pure water. However, this method is very wasteful of water, and the TDS value on the pure water side will quickly increase, making the quality of the pure water unstable.

[0004] Based on this, we are now researching a reverse osmosis water purifier to achieve zero stale water. Utility Model Content

[0005] Purpose of the utility model: The technical problem to be solved by the utility model is to provide a reverse osmosis water purifier that can achieve zero stale water, and the water purifier can increase the water flow rate under the premise of a small overall flux.

[0006] Technical solution: The utility model realizes a reverse osmosis water purifier with zero stale water, comprising a pre-filter element, a reverse osmosis membrane filter element, a pressure barrel and a post-filter element which are connected in sequence; the water inlet end of the pre-filter element is connected to the water source, the water outlet end of the pre-filter element is connected to the water inlet end of the reverse osmosis membrane filter element, the pure water end of the reverse osmosis membrane filter element is connected to the water outlet of the pressure barrel, and the water outlet of the pressure barrel is also connected to the water inlet end of the post-filter element, and the water outlet end of the post-filter element is connected to the purified water outlet.

[0007] Furthermore, the concentrated water outlet port of the reverse osmosis membrane filter element of the water purifier is connected to the wastewater discharge pipe to achieve discharge from the wastewater outlet.

[0008] Furthermore, a wastewater solenoid valve is provided on the wastewater discharge pipe of the water purifier.

[0009] Furthermore, a solenoid valve and a booster pump are provided on the pipeline connecting the pre-filter element and the reverse osmosis membrane filter element of the water purifier.

[0010] Furthermore, a check valve and a high-pressure switch are provided on the pipeline connecting the reverse osmosis membrane filter element and the pressure barrel of the water purifier.

[0011] Furthermore, the water purifier also includes a shell, which is provided with a limiting plate for installing the pre-filter element and the reverse osmosis membrane filter element, and the post-filter element is connected and fixed by a connecting ring provided on the inner wall of the shell.

[0012] Furthermore, the reverse osmosis membrane filter element and the post-filter element of the water purifier both include a filter bottle, filter elements corresponding to different functions arranged in the filter bottle, and a bottle cap arranged at the upper end of the filter bottle, and the upper end of the filter element passes through the limit plate.

[0013] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: the water purifier is based on the integration of the pre-filter element, the reverse osmosis membrane filter element and the post-filter element, and a pressure barrel is set between the reverse osmosis membrane filter element and the post-filter element to store the purified pure water in the pressure barrel, which not only effectively solves the problem of the first cup of water and achieves zero stale water, but also can improve the water flow of the overall water purifier; and the post-filter element is connected after the pressure barrel, which further improves the water purification effect, and the post-filter element is fixedly connected by a connecting ring, which reduces the space capacity of the overall water purifier and has a wider adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a product diagram of the water purifier of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the water purifier of the utility model;

[0016] Figure 3 This is a schematic diagram of the water path of the water purifier of the utility model. DETAILED DESCRIPTION

[0017] The technical solution of the present utility model is further described in detail below with reference to the accompanying drawings.

[0018] It should be noted that the pre-filter and post-filter elements used in the present invention can be single or composite filter elements, such as at least one of a sediment filter element, an activated carbon filter element, or a hollow fiber filter element. This means that filter elements known in the art can be adapted for their effectiveness and therefore will not be described in detail.

[0019] like Figure 1 and Figure 2As shown, the reverse osmosis water purifier of the present invention includes a housing 10, which is provided with a pre-filter element 1, a reverse osmosis membrane filter element 2, a pressure barrel 3 and a post-filter element 4, all of which are arranged in the housing 10 and are connected in sequence. The pre-filter element 1, the reverse osmosis membrane filter element 2 and the post-filter element 4 each include a filter bottle, a filter element corresponding to each filter bottle to achieve different filtering effects, and a bottle cap provided at the upper end of the filter bottle. In order to install and position the pre-filter element 1 and the reverse osmosis membrane filter element 2, a limit plate 11 for installing the pre-filter element 1 and the reverse osmosis membrane filter element 2 is also provided in the housing 10, and correspondingly, a through hole is provided on the limit plate 11 so that the filter bottles of the pre-filter element 1 and the reverse osmosis membrane filter element 2 pass through the through hole and are connected and fixed by the bottle cap. The bottle cap is provided with a serrated structure that matches a wrench, so that when the corresponding pre-filter element 1 or the reverse osmosis membrane filter element 2 needs to be replaced, the bottle cap can be unscrewed by using a matching wrench. In order to save the overall space of the water purifier, the post-filter element 4 is connected to the inner wall of the housing 10 via a connecting ring 12 to reduce the space occupied by the entire water purifier.

[0020] like Figure 3 As shown, the water inlet end of the pre-filter element 1 of the present invention is connected to the water source through a pipeline, that is, the first filtration is achieved, and the water outlet end of the pre-filter element 1 is connected to the water inlet end of the reverse osmosis membrane filter element 2 through a pipeline. The pure water end of the reverse osmosis membrane filter element 2 is connected to the water outlet end of the pressure barrel 3 through a pipeline, and the water outlet end is connected to the water inlet end of the post-filter element 4. The pressure barrel 3 used in the present invention is a prior art, and its working principle is that an inflatable airbag is provided in the pressure barrel. When water is fed in, the airbag is squeezed, so that the water is subjected to reverse pressure. When this pressure is equal to the water inlet pressure, the pressure barrel is filled with water, and the water inlet stops. At this time, the reverse osmosis water purifier completes water production and shuts down. When the user needs to take water and opens the water purification faucet, the water flows out in the opposite direction, generating outward pressure, and the water flows out into the post-filter element 4 for further purification to obtain purified water and flow out through the clean water outlet connected to the water outlet end of the post-filter element 4. The concentrated water end of the reverse osmosis membrane filter element 3 is connected to the wastewater discharge pipe to discharge the concentrated water from the wastewater outlet.

[0021] The utility model provides a solenoid valve 6 and a booster pump 7 on the pipeline connecting the pre-filter element 1 and the reverse osmosis membrane filter element 2. A check valve 8 and a high-pressure switch 9 are also provided on the pipeline connecting the reverse osmosis membrane filter element 2 and the pressure tank 3. A wastewater solenoid valve 5 is also provided on the wastewater discharge pipe.

[0022] That is, the reverse osmosis water purifier of the present invention is based on the integration of the pre-filter, reverse osmosis membrane filter and post-filter, and a pressure barrel is set between the reverse osmosis membrane filter and the post-filter to store the purified pure water in the pressure barrel, which not only effectively solves the problem of the first cup of water and achieves zero stale water, but also can improve the water flow of the overall water purifier; and the post-filter is connected after the pressure barrel, which further improves the water purification effect, and the post-filter is fixedly connected by a connecting ring, which reduces the space capacity of the overall water purifier and has a wider adaptability.

Claims

1. A reverse osmosis water purifier that achieves zero stale water, characterized in that: The water purifier comprises a pre-filter element (1), a reverse osmosis membrane filter element (2), a pressure barrel (3) and a post-filter element (4) which are connected in sequence; the water inlet end of the pre-filter element (1) is connected to a water source, the water outlet end of the pre-filter element (1) is connected to the water inlet end of the reverse osmosis membrane filter element (2), the pure water end of the reverse osmosis membrane filter element (2) is connected to the water outlet of the pressure barrel (3), and the water outlet of the pressure barrel (3) is also connected to the water inlet end of the post-filter element (4), and the water outlet end of the post-filter element (4) is connected to the purified water outlet.

2. The reverse osmosis water purifier for achieving zero stale water according to claim 1, characterized in that: The concentrated water outlet port of the reverse osmosis membrane filter element (2) is connected to the wastewater discharge pipe to achieve discharge from the wastewater outlet.

3. The reverse osmosis water purifier for achieving zero stale water according to claim 2, characterized in that: A wastewater solenoid valve (5) is provided on the wastewater discharge pipe.

4. The reverse osmosis water purifier for achieving zero stale water according to claim 1, characterized in that: A solenoid valve (6) and a booster pump (7) are also provided on the pipeline connecting the pre-filter element (1) and the reverse osmosis membrane filter element (2).

5. The reverse osmosis water purifier for achieving zero stale water according to claim 1, characterized in that: A check valve (8) and a high-pressure switch (9) are also provided on the pipeline connecting the reverse osmosis membrane filter element (2) and the pressure barrel (3).

6. The reverse osmosis water purifier for achieving zero stale water according to claim 1, characterized in that: The water purifier further comprises a housing (10), the housing (10) being provided with a limiting plate (11) for installing the pre-filter element (1) and the reverse osmosis membrane filter element (2), and the post-filter element (4) being connected and fixed via a connecting ring (12) provided on the inner side wall of the housing (10).

7. The reverse osmosis water purifier for achieving zero stale water according to claim 6, characterized in that: The reverse osmosis membrane filter element (2) and the post-filter element (4) both include a filter bottle, filter elements corresponding to different functions arranged in the filter bottle, and a bottle cap arranged at the upper end of the filter bottle, and the upper end of the filter element passes through the limiting plate (11).

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