Zero-stale-water bucket type reverse osmosis water purification pipeline system and water purifier

Abstract

The utility model discloses a zero-stale-water bucket type reverse osmosis water purification pipeline system and a water purifier, and belongs to the technical field of water purification equipment. The system mainly comprises an N-stage primary filtering subsystem communicated with raw water flow, and the water outlet end of the N-stage primary filtering subsystem is communicated with a raw water opening of a reverse osmosis (RO) membrane through a booster water pump; a pure water port of the reverse osmosis RO membrane is communicated with the pure water output subsystem through a pure water electromagnetic valve on one hand, and is communicated with a raw water port of the reverse osmosis RO membrane through a reflux loop on the other hand; waste water is discharged from a concentrated water port of the RO membrane through a waste water assembly; a pressure barrel water inlet end of the pure water output subsystem is communicated with a pure water port of the RO membrane through a pressure barrel high-pressure switch on one hand, and is communicated with a user side valve through a pure water high-pressure switch on the other hand. According to the utility model, 'zero aged water 'is realized, pure water supply is almost uninterrupted, water is saved, the water-saving and environment-friendly effects are realized, the service life of the RO membrane is long, a pipeline system is simple and easy to implement, the operation is stable and reliable, and the maintenance cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of water purification equipment, and more specifically, particularly relates to a zero-stale water, barrel-type reverse osmosis water purification pipeline system and a water purifier with almost uninterrupted pure water supply, water conservation, green environmental protection, long service life of RO membrane, simple and easy implementation of pipeline system, stable and reliable operation, and low maintenance cost. Background Art

[0002] Reverse osmosis water purifiers are generally composed of primary filtration devices (such as PP cotton filter elements, activated carbon filter elements, etc.), booster pumps, RO reverse osmosis membrane components, water inlet valves, wastewater valves, high-pressure switches, low-pressure switches, etc. Reverse osmosis membrane technology is a membrane separation and filtration technology that uses pressure difference as a driving force to separate pure water and wastewater from tap water.

[0003] Reverse osmosis can reduce the total dissolved solids (TDS) of the treated water. Under pressure, water molecules can pass through the RO reverse osmosis membrane, while inorganic salts, heavy metal ions, organic matter, colloids, bacteria, viruses and other impurities in the water cannot pass through the RO reverse osmosis membrane, so that the pure water that can pass through and the wastewater that cannot pass through are strictly distinguished. Reverse osmosis technology is currently a very clean and effective treatment method in the field of water treatment.

[0004] According to whether there is a storage tank, water purifiers can be divided into bucket-type water purifiers and non-bucket-type water purifiers. Although bucket-type water purifiers cannot produce water continuously, their water storage function means that they only need to be equipped with a smaller booster pump, so the noise generated during operation is lower, which is particularly suitable for noise-sensitive home environments. Like non-bucket-type water purifiers, bucket-type water purifiers will also have the problem of stale water. The reason for the formation of so-called "stale water" is that when the water purifier produces water, the water that has been initially filtered by the pre-filter element passes through the reverse osmosis membrane, which will produce pure water and waste water. The pure water will be output from the faucet, and the waste water will be discharged and discarded. When the water purifier stops, as shown in the attached figure of the instruction manual Figure 1 As shown, pure water 52, waste water 53 and raw water 51 will remain in the membrane shell 221 of the reverse osmosis membrane. Due to the different osmotic pressures, a osmotic difference will be formed, resulting in bidirectional osmosis, and the three will slowly mix. Therefore, in the early stage of re-water production, the total dissolved solids (TDS) content of the effluent will temporarily increase, and then gradually return to normal.

[0005] The stale water problem of barrel-type reverse osmosis water purifiers is a key technical issue that needs to be solved in the industry. Utility Model Content

[0006] The purpose of the utility model is to provide a zero stale water barrel-type reverse osmosis water purification pipeline system and a water purifier in view of the deficiencies in the prior art, which have zero stale water, almost uninterrupted pure water supply, water conservation, green environmental protection, long service life of RO membrane, simple and easy implementation of the pipeline system, stable and reliable operation, and low maintenance cost.

[0007] The utility model is realized by the following technical solutions:

[0008] A zero-stale water barrel-type reverse osmosis water purification pipeline system, comprising an N-stage primary filtration subsystem connected to a raw water flow, wherein a water outlet of the N-stage primary filtration subsystem is connected to a raw water outlet of a reverse osmosis RO membrane via a booster water pump;

[0009] The pure water outlet of the reverse osmosis RO membrane is connected to the pure water output subsystem through the pure water solenoid valve on the one hand, and is connected to the raw water outlet of the reverse osmosis RO membrane through the reflux loop on the other hand; the concentrated water outlet of the reverse osmosis RO membrane discharges waste water through the wastewater component;

[0010] The pure water output subsystem includes a pressure barrel, and the water inlet end of the pressure barrel is connected to the pure water outlet of the reverse osmosis RO membrane through the pressure barrel high-pressure switch on the one hand, and is connected to the user-end valve through the pure water high-pressure switch on the other hand.

[0011] Preferably, the reflux circuit comprises a reflux solenoid valve, which is connected to the h1 node between the water outlet of the N-stage primary filtering subsystem and the water inlet of the booster pump via a reflux check valve.

[0012] Preferably, a first pure water check valve is provided between the pure water solenoid valve and the pressure barrel high-pressure switch; a second pure water check valve is provided between the water inlet end of the pressure barrel and the pure water high-pressure switch; and a pure water TDS sensor for detecting the pure water quality is installed at the pure water outlet of the reverse osmosis RO membrane.

[0013] Preferably, the water inlet end of the N-stage primary filtration subsystem is connected to the raw water flow via a water inlet solenoid valve and a water inlet low-pressure switch.

[0014] Preferably, a raw water TDS sensor for detecting the quality of raw water is installed between the water inlet low-pressure switch and the water inlet solenoid valve.

[0015] Preferably, the wastewater component includes two wastewater flow valves and a wastewater solenoid valve connected in parallel, the water inlet ends of the wastewater flow valve and the wastewater solenoid valve are connected to the concentrate outlet of the reverse osmosis RO membrane, and the water outlet ends of the wastewater flow valve and the wastewater solenoid valve are connected to the wastewater discharge channel via a wastewater check valve.

[0016] Preferably, the N-stage primary filtration subsystem comprises a composite filter element, a sintered activated carbon filter element, and an ultrafiltration membrane filter element which are sequentially connected in series; wherein the composite filter element is the first primary filtration filter element.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The piping system of this utility model is simple and ingenious in design, which fundamentally solves the problem of stale water in barrel-type reverse osmosis water purifiers and truly achieves "zero stale water";

[0019] 2. The utility model supplies water from the pressure barrel when there is water in the pressure barrel, and quickly produces and discharges water through the reverse osmosis RO membrane when there is no water in the pressure barrel, and the pure water supply is almost uninterrupted;

[0020] 3. The utility model pipeline system is green and environmentally friendly, and the design of the reflux loop allows water resources to be recycled, saving water and achieving high water resource utilization;

[0021] 4. The wastewater component structure design of the utility model enables the reverse osmosis RO membrane to be flushed in time when it needs to be flushed, greatly improving the service life of the reverse osmosis RO membrane;

[0022] 5. The utility model has strong practicability, a simple and easy-to-implement piping system, stable and reliable operation, and low maintenance cost, which greatly improves the market competitiveness of barrel-type reverse osmosis water purifiers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the reverse osmosis RO membrane structure.

[0024] Figure 2 This is a schematic diagram of the structure of the pipeline system of the utility model Figure 1 .

[0025] Figure 3 This is a schematic diagram of the structure of the pipeline system of the utility model Figure 2 .

[0026] In the figure: 11, N-level primary filtration subsystem; 111, composite filter element; 112, sintered activated carbon filter element; 113, ultrafiltration membrane filter element; 12, water inlet solenoid valve; 13, water inlet low pressure switch; 14, raw water TDS sensor; 21, booster pump; 22, reverse osmosis RO membrane; 221, membrane shell; 23, pure water solenoid valve; 24, reflux loop; 241, reflux solenoid valve; 242, reflux check valve; 25, pure water TDS sensor; 3, pure water output subsystem; 31, pressure barrel; 32, pressure barrel high pressure switch; 33, pure water high pressure switch; 34, user-end valve; 35, first pure water check valve; 36, second pure water check valve; 4, wastewater component; 41, wastewater flow valve; 42, wastewater solenoid valve; 43, wastewater check valve; 51, raw water; 52, pure water; 53, wastewater. DETAILED DESCRIPTION

[0027] In order to enable readers to better understand the design purpose of the utility model, the technical solution described in the utility model is further described in combination with the embodiments below. It should be noted that the directional nouns that may be involved in the following paragraphs, including but not limited to "up, down, left, right, front, back", etc., are based on the visual directions shown in the corresponding drawings of the specification, and they should not be and should not be regarded as limiting the protection scope or technical solution of the utility model. The purpose is only to facilitate technicians in this field to better understand the technical solution created by the utility model.

[0028] In the description of this specification, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] Example 1

[0030] like Figure 1 to Figure 2 As shown, a zero-stale water barrel type reverse osmosis water purification pipeline system includes an N-stage primary filtration subsystem 11 connected to the raw water flow, and the water outlet of the N-stage primary filtration subsystem 11 is connected to the raw water outlet of the reverse osmosis RO membrane 22 through a booster pump 21. Since the reverse osmosis RO membrane 22 is sensitive to free chloride ions, which will reduce its efficiency and life, the N-stage primary filtration subsystem 11 is generally required for pre-filtration. The pure water outlet of the reverse osmosis RO membrane 22 is connected to the pure water output subsystem 3 through a pure water solenoid valve 23 on the one hand, and is connected to the raw water outlet of the reverse osmosis RO membrane 22 through a reflux loop 24 on the other hand; the concentrated water outlet of the reverse osmosis RO membrane 22 discharges waste water through a wastewater component 4. The pure water output subsystem 3 includes a pressure barrel 31, and the water inlet end of the pressure barrel 31 is connected to the pure water outlet of the reverse osmosis RO membrane 22 through a pressure barrel high-pressure switch 32 on the one hand, and is connected to the user-end valve 34 through a pure water high-pressure switch 33 on the other hand. The combined state of the pipeline system of this embodiment can be controlled by the existing control circuit. The user-end valve 34 is generally a user faucet. In this embodiment, a first pure water check valve 35 is provided between the pure water solenoid valve 23 and the pressure barrel high-pressure switch 32 to prevent water flow from flowing in reverse; a second pure water check valve 36 is provided between the water inlet end of the pressure barrel 31 and the pure water high-pressure switch 33 to prevent water flow from flowing in reverse; and a pure water TDS sensor 25 for detecting the pure water quality is installed at the pure water outlet of the reverse osmosis RO membrane 22.

[0031] The working principle of this embodiment is:

[0032] When there is water in the pressure barrel 31, the pressure in the barrel is high, the pressure barrel high pressure switch 32 is in the disconnected state, the electrical equipment in the pipeline system remains in the standby state, and the water in the pressure barrel 31 is directly output from the user-end valve 34 for user use.

[0033] When the pressure barrel 31 is in a water shortage state, the pressure in the barrel decreases, and the pressure barrel high pressure switch 32 is closed. After the control circuit detects that the pressure barrel high pressure switch 32 is closed, the booster pump 21 and the reverse osmosis RO membrane 22 are started. In this embodiment, when the reverse osmosis RO membrane 22 starts to work, the waste water component 4 is used to flush the reverse osmosis RO membrane 22, and the stale water in the reverse osmosis RO membrane 22 is circulated and purified by the reverse osmosis RO membrane 22. After working in this state for a few seconds, the flushing function of the waste water component 4 is turned off, and the pure water TDS sensor 25 is used to detect whether the pure water is qualified. If the test is qualified, the reflux loop 24 is closed, and the qualified water will be input into the pure water output subsystem 3; if the test is unqualified, the reverse osmosis RO membrane 22 will continue to reflux unqualified water through the reflux loop 24 until the test is qualified. For example, when the TDS value detected by the pure water TDS sensor 25 is less than 30 mg / L, the pure water solenoid valve 23 is opened to input qualified pure water into the pure water output subsystem 3. When the TDS value detected by the pure water TDS sensor 25 is greater than 30 mg / L, the reflux loop 24 continues to reflux unqualified water until it is qualified. It can be seen that the mutual coordination of the reflux loop 24 and the pure water solenoid valve 23 in this embodiment allows the stale water to be re-purified, thus completely solving the stale water problem from the root.

[0034] When the pressure barrel 31 is in a state of lack of water, if the user-side valve 34 is always in an open state, the qualified pure water of the reverse osmosis RO membrane 22 will be directly output from the user-side valve 34 (because, even if the pressure barrel 31 is in a state of lack of water, its pressure is greater than the pressure of the user-side valve 34). If the user-side valve 34 is in a closed valve state, the qualified pure water of the reverse osmosis RO membrane 22 will be pressed into the pressure barrel 31 for storage. When the pure water in the pressure barrel 31 is full, the pressure in the pressure barrel 31 increases, the pressure barrel high-pressure switch 32 is disconnected, and the pipeline system will start the wastewater component 4 again to flush the reverse osmosis RO membrane 22, and the pure water of the reverse osmosis RO membrane 22 will reflux through the reflux loop 24; the flushing will end after a few seconds, and the pure water solenoid valve 23, the booster pump 21, the reverse osmosis RO membrane 22 and other electrical equipment will be turned off at the same time, and the water purification pipeline system will be in standby state. Therefore, in this embodiment, when there is water in the pressure barrel, the pressure barrel supplies water, and when there is no water in the pressure barrel, the reverse osmosis RO membrane quickly produces and discharges water. Only when the reverse osmosis RO membrane 22 circulates and processes old water in the initial stage of water production will there be a brief water outage of a few seconds. During user use, the supply of pure water is almost uninterrupted.

[0035] The wastewater assembly 4 of this embodiment includes two wastewater flow valves 41 and wastewater solenoid valves 42 connected in parallel, the water inlet ends of the wastewater flow valves 41 and wastewater solenoid valves 42 are connected to the concentrated water outlet of the reverse osmosis RO membrane 22, and the water outlet ends of the wastewater flow valves 41 and wastewater solenoid valves 42 are connected to the wastewater discharge channel via a wastewater check valve 43. The parallel connection of the wastewater flow valve 41 and the wastewater solenoid valve 42 constitutes a wastewater valve.

[0036] The flushing function of this embodiment is to adjust the opening of the wastewater valve to the maximum, discharge more water to remove the sediment on the RO membrane. Flushing has a positive effect on increasing the life of the reverse osmosis RO membrane. In this embodiment, the reverse osmosis RO membrane 22 is flushed when the reverse osmosis RO membrane 22 starts and ends work, so as to protect the service life of the reverse osmosis RO membrane. During normal water production, the wastewater solenoid valve 42 is closed, and the wastewater is discharged through the wastewater flow valve 41 and the wastewater check valve 43. When the flushing action is performed, the wastewater solenoid valve 42 and the wastewater flow valve 41 are opened at the same time, the amount of wastewater is large, and the wastewater flows out from the wastewater flow valve 41 and the wastewater solenoid valve 42 at the same time, and then discharged through the wastewater check valve 43.

[0037] The piping system of this embodiment is simple and ingenious in design, which fundamentally solves the stale water problem of barrel-type reverse osmosis water purifiers and truly achieves "zero stale water";

[0038] In this embodiment, when there is water in the pressure barrel, water is supplied by the pressure barrel. When there is no water in the pressure barrel, the reverse osmosis RO membrane quickly produces and discharges water, and the supply of pure water is almost uninterrupted.

[0039] The pipeline system of this embodiment is green and environmentally friendly, and the design of the reflux loop allows water resources to be recycled, saving water and achieving high water resource utilization;

[0040] The structural design of the wastewater assembly in this embodiment enables the reverse osmosis RO membrane to be flushed in time when it needs to be flushed, greatly increasing the service life of the reverse osmosis RO membrane;

[0041] This embodiment is highly practical, the piping system is simple and easy to implement, the operation is stable and reliable, and the maintenance cost is low, which greatly improves the market competitiveness of barrel-type reverse osmosis water purifiers.

[0042] Example 2

[0043] Based on Example 1, this example continues to describe in detail the technical features involved therein and the functions and roles played by the technical features in the utility model, so as to help technicians in this field fully understand the technical solution of the utility model and reproduce it.

[0044] On the basis of Example 1, the reflux loop 24 of this embodiment includes a reflux solenoid valve 241, which is connected to the h1 node located between the water outlet of the N-stage primary filtering subsystem 11 and the water inlet of the booster pump 21 through a reflux check valve 242. The pipeline design of the reflux loop 24 is simple and reasonable, and the reflux solenoid valve 241 is a key component. When the reflux solenoid valve 241 is opened, the reflux loop 24 flows, and when the reflux solenoid valve 241 is disconnected, the reflux solenoid valve 241 does not flow. The reflux check valve 242 is used to prevent the water from flowing in the opposite direction.

[0045] In this embodiment, the water inlet end of the N-level primary filtration subsystem 11 is connected to the raw water flow through the water inlet solenoid valve 12 and the water inlet low-pressure switch 13. A raw water TDS sensor 14 for detecting the quality of raw water is installed between the water inlet low-pressure switch 13 and the water inlet solenoid valve 12. The N-level primary filtration subsystem 11 includes a composite filter element 111, a sintered activated carbon filter element 112, and an ultrafiltration membrane filter element 113 connected in series in sequence; wherein the composite filter element 111 is the first primary filter element. If the water inlet low-pressure switch 13 is disconnected, it means that the raw water flow (such as tap water) is not flowing smoothly, and the pipeline system will stop making water. The raw water TDS sensor 14 is used to detect the quality of municipal water sources.

[0046] Example 3

[0047] This embodiment provides a water purifier, which uses the zero-stale water barrel-type reverse osmosis water purification pipeline system described in Example 1 or Example 2.

[0048] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications in shape, structure, features and spirit within the scope of the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A zero-stale water barrel type reverse osmosis water purification pipeline system, characterized by: It comprises an N-stage primary filtering subsystem (11) connected to the raw water flow, wherein the water outlet of the N-stage primary filtering subsystem (11) is connected to the raw water outlet of the reverse osmosis RO membrane (22) via a booster pump (21); The pure water outlet of the reverse osmosis RO membrane (22) is connected to the pure water output subsystem (3) via the pure water solenoid valve (23) on the one hand, and is connected to the raw water outlet of the reverse osmosis RO membrane (22) via the reflux loop (24) on the other hand; the concentrated water outlet of the reverse osmosis RO membrane (22) discharges waste water via the waste water assembly (4); The pure water output subsystem (3) comprises a pressure barrel (31), wherein the water inlet end of the pressure barrel (31) is connected to the pure water outlet of the reverse osmosis RO membrane (22) via a pressure barrel high pressure switch (32) on the one hand, and is connected to a user-end valve (34) via a pure water high pressure switch (33) on the other hand.

2. A zero-stale water barrel-type reverse osmosis water purification pipeline system according to claim 1, characterized in that: The return circuit (24) comprises a return solenoid valve (241), which is connected to an h1 node located between a water outlet of the N-stage primary filtering subsystem (11) and a water inlet of the boosting water pump (21) via a return check valve (242).

3. A zero-stale water barrel-type reverse osmosis water purification pipeline system according to claim 1, characterized in that: A first pure water check valve (35) is provided between the pure water solenoid valve (23) and the pressure barrel high-pressure switch (32); a second pure water check valve (36) is provided between the water inlet end of the pressure barrel (31) and the pure water high-pressure switch (33); and a pure water TDS sensor (25) for detecting the quality of pure water is installed at the pure water outlet of the reverse osmosis RO membrane (22).

4. A zero-stale water barrel-type reverse osmosis water purification pipeline system according to claim 1, characterized in that: The water inlet end of the N-stage primary filtering subsystem (11) is connected to the raw water flow via a water inlet solenoid valve (12) and a water inlet low-pressure switch (13).

5. A zero-stale water barrel-type reverse osmosis water purification pipeline system according to claim 4, characterized in that: A raw water TDS sensor (14) for detecting the quality of raw water is installed between the water inlet low-pressure switch (13) and the water inlet solenoid valve (12).

6. A zero-stale water barrel type reverse osmosis water purification pipeline system according to claim 1, characterized in that: The wastewater assembly (4) comprises two wastewater flow valves (41) and a wastewater solenoid valve (42) connected in parallel, wherein the water inlet ends of the wastewater flow valve (41) and the wastewater solenoid valve (42) are connected to the concentrated water outlet of the reverse osmosis RO membrane (22), and the water outlet ends of the wastewater flow valve (41) and the wastewater solenoid valve (42) are connected to the wastewater discharge channel via the wastewater check valve (43).

7. The zero-stale water barrel-type reverse osmosis water purification pipeline system according to claim 1 is characterized by: The N-stage primary filtration subsystem (11) comprises a composite filter element (111), a sintered activated carbon filter element (112), and an ultrafiltration membrane filter element (113) which are sequentially connected in series; the composite filter element (111) is a first-stage primary filtration filter element.

8. A water purifier using the zero-stale water barrel-type reverse osmosis water purification pipeline system described in any one of claims 1 to 7.

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