Flow-adjustable water purification system

Abstract

The utility model provides a flow-adjustable water purification system, and belongs to the field of water purification systems, the flow-adjustable water purification system comprises a water inlet solenoid valve, a front filter element, a reverse osmosis filter element and a faucet which are connected through a pipeline, the front filter element is located between the water inlet solenoid valve and the reverse osmosis filter element, the reverse osmosis filter element is located between the front filter element and the faucet, and the faucet is located at the tail end of the pipeline. A booster pump is arranged between the front filter element and the reverse osmosis filter element, the reverse osmosis filter element is connected with a concentrated water electromagnetic valve, and a flow adjusting assembly used for adjusting water flow pressure is arranged between the booster pump and the faucet. According to the scheme, the flow adjusting assembly is arranged in the water path and is the pressure-bearing one-way valve or the potentiometer, so that double adjustment of flow can be achieved, the purpose of controlling the pressure change of pure water at a small value is achieved, a faucet, a high-pressure switch, a filter element and the like are prevented from bearing high-pressure pressure, the safety of all elements is improved, and the service life is prolonged. The working performance of elements such as the filter element is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of water purification systems, and particularly belongs to a water purification system with adjustable flow rate. Background Art

[0002] In recent years, with the improvement of the living quality of the common people, safe and efficient household drinking water has been popularized. At the same time, with the rapid development of water purification technology, the flux of water purifiers has been increasing continuously, from dozens of gallons to thousands of gallons, and the water output flow rate of water purification is getting larger and larger. In the face of different usage scenarios, customers need different water output flow rates to meet their needs. If there is no effective adjustment system for the water output of water purification, on the one hand, it will cause waste of water resources, and on the other hand, it may cause the water purification system to be in an unsafe environment for a long time, bringing serious hidden dangers of water leakage.

[0003] There is a disclosed zero-standing water water purification system (patent application number: CN202220337892.4), which includes: a pre-filter element, inside which there are filter materials and a soft water bag; the filter materials are configured to filter the influent input from the influent end of the pre-filter element and then transport it to the effluent end of the pre-filter element; the soft water bag is configured to expand or contract when the direction of the water pressure it bears changes; a reverse osmosis filter element, inside which there is a reverse osmosis membrane, and its influent end is communicated with the effluent end of the pre-filter element and the soft water bag; the reverse osmosis membrane is configured to filter the influent input from the influent end of the reverse osmosis filter element and then transport it to the pure water effluent end of the reverse osmosis filter element; a pure water check valve, which is arranged between the soft water bag and the pure water effluent end of the reverse osmosis filter element, and is configured to only allow water flow to flow from the effluent end of the reverse osmosis filter element to the soft water bag.

[0004] This disclosed solution forcibly adjusts its water output flow rate by changing the opening degree of the faucet and by direct interception. This method is simple and crude, and the adjustment of the flow rate is effective, but at the same time, it may cause frequent startup of the booster pump, and the faucet, high-pressure switch, filter membrane, etc. bear high pressure, resulting in the faucet and high-pressure switch working in an unsafe state for a long time. At the same time, the filter membrane bearing high pressure may affect its performance. Summary of the Utility Model

[0005] The present application provides a water purification system with adjustable flow rate, aiming to solve the problems that forcibly adjusting its water output flow rate by changing the opening degree of the faucet and by direct interception may cause frequent startup of the booster pump, the faucet, high-pressure switch, filter membrane, etc. bear high pressure, resulting in the faucet and high-pressure switch working in an unsafe state for a long time, and the filter membrane bearing high pressure may affect its performance.

[0006] In order to achieve the above object, the utility model adopts the following technical solutions:

[0007] A water purification system with adjustable flow rate, comprising a water inlet solenoid valve, a pre-filter, a reverse osmosis filter, and a faucet connected by pipelines. The pre-filter is located between the water inlet solenoid valve and the reverse osmosis filter, and the reverse osmosis filter is arranged between the pre-filter and the faucet. A booster pump is provided between the pre-filter and the reverse osmosis filter. The reverse osmosis filter is connected to a concentrated water solenoid valve, and a flow rate regulating component for adjusting the water flow pressure is provided between the booster pump and the faucet.

[0008] Preferably, the flow rate regulating component is a potentiometer. The potentiometer is installed on the faucet and connected to the booster pump through a control unit. When the faucet reduces the opening degree, the resistance value of the potentiometer changes to control the reduction of the supply voltage of the booster pump, reducing the water flow rate; when the faucet increases the opening degree, the resistance value of the potentiometer changes to control the increase of the supply voltage of the booster pump, increasing the water flow rate.

[0009] Preferably, a post-filter is provided between the reverse osmosis filter and the concentrated water solenoid valve. The reverse osmosis filter is connected to the concentrated water solenoid valve and the faucet respectively through the post-filter.

[0010] Preferably, a pure water outlet solenoid valve for controlling the pure water flow rate is provided between the post-filter and the faucet.

[0011] Preferably, the flow rate regulating component is a pressure-bearing check valve. One end of the pressure-bearing check valve is connected to the faucet, and the other end of the pressure-bearing check valve is connected to the water inlet end of the booster pump. When the faucet opening degree decreases, the pressure-bearing check valve conducts to return part of the pure water between the reverse osmosis filter and the faucet to the front of the booster pump.

[0012] Preferably, a post-filter is provided between the reverse osmosis filter and the faucet. A check valve is provided between the reverse osmosis filter and the post-filter. The end of the pressure-bearing check valve connected to the faucet is connected to the pipeline between the reverse osmosis filter and the check valve.

[0013] Preferably, a pure water flow meter is provided between the post-filter and the faucet.

[0014] Preferably, a high-pressure switch is provided between the post-filter and the faucet.

[0015] The utility model has the following beneficial effects:

[0016] (1) In this solution, a flow rate regulating component is provided in the water circuit. The flow rate regulating component can be a pressure-bearing one-way valve, which is an improvement on the ordinary one-way valve, enabling the component to be conducted under a specific pressure. Meanwhile, within a certain pressure range, as the pressure at the water inlet end increases, the conduction area increases, achieving a proportional relationship between pressure and flow rate. That is, when the faucet opening becomes smaller, the pressure at the water outlet end increases, the opening of the pressure-bearing one-way valve increases, and the backflow flow rate increases, thus achieving the purpose of controlling the change in pure water pressure within a small value, avoiding high pressure on components such as faucets, high-pressure switches, and filter membranes, improving the safety of each component, and ensuring the performance of the filter membrane.

[0017] (2) The flow rate regulating component can be a potentiometer. In this solution, the potentiometer is implanted into the faucet. When the faucet opening is changed, the resistance value of the potentiometer changes accordingly. By obtaining the resistance value of the potentiometer, the supply voltage of the booster pump is changed, thereby realizing the regulation of the pure water flow rate. This method of regulating the flow rate is twofold. On the one hand, it is the influence of the faucet opening size on the flow rate, and on the other hand, it is the adjustment of the flow rate by the supply voltage of the booster pump. Through this method, it avoids the high pressure on some components such as reverse osmosis filter elements, faucets, and pipelines when directly changing the faucet opening to regulate the flow rate, solves the potential leakage hazard, improves safety, and reduces noise during flow rate regulation, giving customers a better experience. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the water purification system in the present utility model;

[0019] Figure 2 is a schematic structural diagram of the water purification system when the flow rate regulating component in the present utility model is a potentiometer;

[0020] Figure 3 is a schematic structural diagram of the water purification system when the flow rate regulating component in the present utility model is a pressure-bearing one-way valve.

[0021] Among them, 1 - inlet solenoid valve, 2 - pre-filter element, 3 - booster pump, 4 - reverse osmosis filter element, 5 - concentrated water solenoid valve, 6 - flow rate regulating component, 61 - potentiometer, 62 - pressure-bearing one-way valve, 7 - faucet, 8 - post-filter element, 9 - pure water outlet solenoid valve, 10 - one-way valve, 11 - high-pressure switch, 12 - pure water flow meter. Detailed Embodiment

[0022] Embodiment 1

[0023] As Figure 1As shown in the figure, a water purification system with adjustable flow rate includes an inlet solenoid valve 1, a pre-filter 2, a reverse osmosis filter element 4, and a faucet 7 connected by pipelines. The pre-filter 2 is located between the inlet solenoid valve 1 and the reverse osmosis filter element 4, and the reverse osmosis filter element 4 is arranged between the pre-filter 2 and the faucet 7. A booster pump 3 is provided between the pre-filter 2 and the reverse osmosis filter element 4. The reverse osmosis filter element 4 is connected with a concentrated water solenoid valve 5, and a flow rate regulating component 6 for regulating the water flow pressure is provided between the booster pump 3 and the faucet 7.

[0024] The flow rate regulating component 6 is used to regulate the water flow rate between the faucet 7 and the booster pump 3 to adjust the water pressure in the water circuit.

[0025] Embodiment 2

[0026] As Figure 2 shown, the flow rate regulating component 6 is a potentiometer 61. The potentiometer 61 is installed on the faucet 7 and is connected to the booster pump 3 through a control unit. When the faucet 7 reduces the opening degree, the resistance value of the potentiometer 61 changes to control the supply voltage of the booster pump 3 to decrease, reducing the water flow rate; when the faucet 7 increases the opening degree, the resistance value of the potentiometer 61 changes to control the supply voltage of the booster pump 3 to increase, increasing the water flow rate.

[0027] A post-filter 8 is provided between the reverse osmosis filter element 4 and the concentrated water solenoid valve 5. The reverse osmosis filter element 4 is connected to the concentrated water solenoid valve 5 and the faucet 7 respectively through the post-filter 8.

[0028] A pure water outlet solenoid valve 9 for controlling the pure water flow rate is provided between the post-filter 8 and the faucet 7.

[0029] The working principle of this device: When the faucet 7 is turned on under the standby condition, the resistance of the implanted potentiometer 61 changes, and the electronic control issues an instruction to start the inlet solenoid valve 1, the booster pump 3, and the pure water outlet solenoid valve 9 to work normally for water outlet; when the opening degree of the faucet 7 is reduced, the resistance of the potentiometer 61 changes accordingly (there is a one-to-one correspondence between the resistance value of the potentiometer 61 and the opening degree), and the electronic control issues an instruction, and the supply voltage of the booster pump 3 becomes smaller accordingly, and the pure water outlet flow rate decreases rapidly. When the opening degree of the faucet 7 is increased, the resistance of the potentiometer 61 changes accordingly, and the electronic control issues an instruction, and the voltage of the booster pump 3 becomes larger accordingly, and the pure water outlet flow rate increases rapidly. When the faucet 7 is closed, the electronic control unit detects the resistance value of the potentiometer 61. Because there is a one-to-one correspondence between the resistance value of the potentiometer 61 and the opening degree, after being judged by the electronic control, the faucet 7 is in the closed state at this time, and the inlet solenoid valve 1, the booster pump 3, and the pure water outlet solenoid valve 9 are closed, and the prototype enters the standby state.

[0030] Embodiment 3

[0031] As Figure 3As shown, the flow regulating component 6 is a pressure-bearing check valve 62. One end of the pressure-bearing check valve 62 is connected to the faucet 7, and the other end of the pressure-bearing check valve 62 is connected to the water inlet end of the booster pump 3. When the opening of the faucet 7 decreases, the pressure-bearing check valve 62 conducts to return part of the pure water between the reverse osmosis filter element 4 and the faucet 7 to the front of the booster pump 3.

[0032] A post-filter 8 is provided between the reverse osmosis filter element 4 and the faucet 7. A check valve 10 is provided between the reverse osmosis filter element 4 and the post-filter 8. The end of the pressure-bearing check valve 62 connected to the faucet 7 is connected to the pipeline between the reverse osmosis filter element 4 and the check valve 10.

[0033] A pure water flow meter 12 is provided between the post-filter 8 and the faucet 7.

[0034] A high-pressure switch 11 is provided between the post-filter 8 and the faucet 7.

[0035] The working principle of this device:

[0036] When the faucet 7 is turned on under standby conditions, the contact of the high-pressure switch 11 closes, and the electronic control issues an instruction to start the water inlet solenoid valve 1 and the booster pump 3 to work normally and discharge water. During normal water discharge, the faucet 7 is fully open, and the pressure on the pure water return branch is relatively low, so the pressure-bearing check valve 62 does not conduct. When the opening of the faucet 7 is adjusted and the pure water output decreases, the pressure on the pure water return branch gradually increases. When the pressure is greater than a certain limit value, (because the pressure-bearing check valve 62 has the characteristic of conducting under a certain pressure) at this time, the pressure-bearing check valve 62 is conducted, and part of the pure water is returned to the front of the booster pump 3. The smaller the opening of the faucet 7, the smaller the pure water flow rate, the greater the pure water end pressure, and the greater the return flow rate. Therefore, within a certain range, the return flow rate is inversely proportional to the opening of the faucet 7. The preset conduction pressure of the pressure-bearing check valve 62 needs to consider the pure water end pressure and the pure water return flow rate during normal operation. If the preset conduction pressure value is high, then it will conduct only when there is a relatively high pressure at the pure water end, and the return flow rate is small, which will cause a high pressure in front of the filter element. The high-pressure switch 11, the pure water flow meter 12, and the faucet 7 on the pure water pipeline all bear high pressure. If the preset conduction pressure value of the pressure-bearing check valve 62 is low, due to the different water inlet end pressures in different regions, it may cause the pressure-bearing check valve 62 to conduct when the faucet 7 is fully open during normal operation, returning part of the pure water to the front of the booster pump 3 and reducing the pure water flow rate. For different systems, it is necessary to conduct test verification to determine the conduction pressure of the pressure-bearing check valve 62 to achieve the required function.

[0037] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any person skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A water purification system with adjustable flow rate, comprising a water inlet solenoid valve (1), a pre-filter (2), a reverse osmosis filter element (4) and a faucet (7) connected by pipelines. The pre-filter (2) is located between the water inlet solenoid valve (1) and the reverse osmosis filter element (4), and the reverse osmosis filter element (4) is arranged between the pre-filter (2) and the faucet (7), characterized in that, A booster pump (3) is provided between the pre-filter element (2) and the reverse osmosis filter element (4). The reverse osmosis filter element (4) is connected to a concentrated water solenoid valve (5). A flow rate regulating assembly (6) for regulating the water flow pressure is provided between the booster pump (3) and the faucet (7).

2. The water purification system with adjustable flow rate according to claim 1, characterized in that, The flow rate regulating assembly (6) is a potentiometer (61). The potentiometer (61) is installed on the faucet (7) and is connected to the booster pump (3) through a control unit. When the opening of the faucet (7) decreases, the resistance value of the potentiometer (61) changes to control the supply voltage of the booster pump (3) to decrease, reducing the water flow rate; when the opening of the faucet (7) increases, the resistance value of the potentiometer (61) changes to control the supply voltage of the booster pump (3) to increase, increasing the water flow rate.

3. The water purification system with adjustable flow rate according to claim 2, wherein A post-filter element (8) is provided between the reverse osmosis filter element (4) and the concentrated water solenoid valve (5). The reverse osmosis filter element (4) is connected to the concentrated water solenoid valve (5) and the faucet (7) respectively through the post-filter element (8).

4. A water purification system with adjustable flow rate according to claim 3, characterized in that, A pure water outlet solenoid valve (9) for controlling the pure water flow rate is provided between the post-filter element (8) and the faucet (7).

5. The water purification system with adjustable flow rate according to claim 1, characterized in that The flow rate regulating assembly (6) is a pressure-bearing check valve (62). One end of the pressure-bearing check valve (62) is connected to the faucet (7), and the other end of the pressure-bearing check valve (62) is connected to the inlet end of the booster pump (3). When the opening of the faucet (7) decreases, the pressure-bearing check valve (62) conducts to return part of the pure water between the reverse osmosis filter element (4) and the faucet (7) to the front of the booster pump (3).

6. The water purification system with adjustable flow rate according to claim 5, characterized in that, A post-filter element (8) is provided between the reverse osmosis filter element (4) and the faucet (7). A check valve (10) is provided between the reverse osmosis filter element (4) and the post-filter element (8). The end of the pressure-bearing check valve (62) connected to the faucet (7) is connected to the pipeline between the reverse osmosis filter element (4) and the check valve (10).

7. The water purification system with adjustable flow rate according to claim 6, characterized in that, A pure water flow meter (12) is provided between the post-filter element (8) and the faucet (7).

8. A water purification system with adjustable flow rate according to claim 6 or 7, characterized in that, A high-pressure switch (11) is provided between the post-filter element (8) and the faucet (7).

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